diff --git a/src/Compilers/CSharp/Portable/BoundTree/Expression.cs b/src/Compilers/CSharp/Portable/BoundTree/Expression.cs
index 5ea4fc3e71e5a1283727b95f022a9c3a52669b55..643b371a9d2011918ba6c778d0d618d6501f1c05 100644
--- a/src/Compilers/CSharp/Portable/BoundTree/Expression.cs
+++ b/src/Compilers/CSharp/Portable/BoundTree/Expression.cs
@@ -138,4 +138,21 @@ internal partial class BoundPropertyGroup
     {
         protected override ImmutableArray<BoundNode> Children => ImmutableArray.Create<BoundNode>(this.ReceiverOpt);
     }
+
+    internal partial class BoundSequence
+    {
+        protected override ImmutableArray<BoundNode> Children => StaticCast<BoundNode>.From(this.SideEffects.Add(this.Value));
+    }
+
+    internal partial class BoundStatementList
+    {
+        protected override ImmutableArray<BoundNode> Children
+        {
+            get
+            {
+                System.Diagnostics.Debug.Assert(this.Kind == BoundKind.StatementList || this.Kind == BoundKind.Scope);
+                return StaticCast<BoundNode>.From(this.Statements);
+            }
+        }
+    }
 }
diff --git a/src/Compilers/CSharp/Portable/Compilation/MemberSemanticModel.cs b/src/Compilers/CSharp/Portable/Compilation/MemberSemanticModel.cs
index cecdd6d48cf8ae1d17e8057a937ead27ced59b99..de610efba3ae084c759cb8bc6dcb5286cacb2f85 100644
--- a/src/Compilers/CSharp/Portable/Compilation/MemberSemanticModel.cs
+++ b/src/Compilers/CSharp/Portable/Compilation/MemberSemanticModel.cs
@@ -961,7 +961,7 @@ public override SyntaxTree SyntaxTree
 
         internal override IOperation GetOperationWorker(CSharpSyntaxNode node, GetOperationOptions options, CancellationToken cancellationToken)
         {
-            var bindingRoot = GetBindingRootOrFieldInitializer(node);
+            var bindingRoot = GetBindingRootOrInitializer(node);
 
             var statementOrRootOperation = GetStatementOrRootOperation(bindingRoot, options, cancellationToken);
             if (statementOrRootOperation == null)
@@ -973,18 +973,44 @@ internal override IOperation GetOperationWorker(CSharpSyntaxNode node, GetOperat
             return statementOrRootOperation.DescendantsAndSelf().FirstOrDefault(o => !o.IsImplicit && o.Syntax == node);
         }
 
-        private CSharpSyntaxNode GetBindingRootOrFieldInitializer(CSharpSyntaxNode node)
+        private CSharpSyntaxNode GetBindingRootOrInitializer(CSharpSyntaxNode node)
         {
             var bindingRoot = GetBindingRoot(node);
 
+            // if binding root is parameter, make it equal value
+            var parameter = bindingRoot as ParameterSyntax;
+            if (parameter != null && parameter.Default?.FullSpan.Contains(node.Span) == true)
+            {
+                // we need to do this since node map doesn't contain bound node for parameter
+                bindingRoot = parameter.Default;
+            }
+
             // if binding root is field variable declarator, make it initializer
             var variableDeclarator = bindingRoot as VariableDeclaratorSyntax;
-            if (variableDeclarator != null && 
-                variableDeclarator.Parent?.Parent.IsKind(SyntaxKind.FieldDeclaration) == true &&
-                variableDeclarator.Initializer?.FullSpan.Contains(node.Span) == true)
+            if (variableDeclarator != null && variableDeclarator.Initializer?.FullSpan.Contains(node.Span) == true)
+            {
+                if (variableDeclarator.Parent?.Parent.IsKind(SyntaxKind.FieldDeclaration) == true ||
+                    variableDeclarator.Parent?.Parent.IsKind(SyntaxKind.EventFieldDeclaration) == true)
+                {
+                    // we need to do this since node map doesn't contain bound node for field variable declarator
+                    bindingRoot = variableDeclarator.Initializer;
+                }
+            }
+
+            // if binding root is enum member decleration, make it equal value
+            var enumMember = bindingRoot as EnumMemberDeclarationSyntax;
+            if (enumMember != null && enumMember.EqualsValue?.FullSpan.Contains(node.Span) == true)
+            {
+                // we need to do this since node map doesn't contain bound node for enum member decl
+                bindingRoot = enumMember.EqualsValue;
+            }
+
+            // if binding root is property member decleration, make it equal value
+            var propertyMember = bindingRoot as PropertyDeclarationSyntax;
+            if (propertyMember != null && propertyMember.Initializer?.FullSpan.Contains(node.Span) == true)
             {
-                // we need to do this since node map doesn't contain bound node for field variable declarator
-                bindingRoot = variableDeclarator.Initializer;
+                // we need to do this since node map doesn't contain bound node for property initializer
+                bindingRoot = propertyMember.Initializer;
             }
 
             return bindingRoot;
@@ -992,7 +1018,7 @@ private CSharpSyntaxNode GetBindingRootOrFieldInitializer(CSharpSyntaxNode node)
 
         private IOperation GetStatementOrRootOperation(CSharpSyntaxNode node, GetOperationOptions options, CancellationToken cancellationToken)
         {
-            Debug.Assert(node == GetBindingRootOrFieldInitializer(node));
+            Debug.Assert(node == GetBindingRootOrInitializer(node));
 
             CSharpSyntaxNode bindableNode;
 
@@ -1591,7 +1617,7 @@ private static Binder GetQueryEnclosingBinder(int position, CSharpSyntaxNode sta
             }
             while (node != null);
 
-            done:
+done:
             return GetEnclosingBinderInternalWithinRoot(AdjustStartingNodeAccordingToNewRoot(startingNode, queryClause.Syntax),
                                       position, queryClause.Binder, queryClause.Syntax);
         }
diff --git a/src/Compilers/CSharp/Portable/Operations/CSharpOperationFactory.cs b/src/Compilers/CSharp/Portable/Operations/CSharpOperationFactory.cs
index ac1afee4fb426120ec0b23441f363e18665ba658..5e79ca2ecd17a75b9490b85c742c982ab8fbcda1 100644
--- a/src/Compilers/CSharp/Portable/Operations/CSharpOperationFactory.cs
+++ b/src/Compilers/CSharp/Portable/Operations/CSharpOperationFactory.cs
@@ -7,6 +7,7 @@
 using System.Linq;
 using Microsoft.CodeAnalysis.CSharp;
 using Microsoft.CodeAnalysis.CSharp.Symbols;
+using Microsoft.CodeAnalysis.CSharp.Syntax;
 using Microsoft.CodeAnalysis.PooledObjects;
 using Roslyn.Utilities;
 
@@ -666,7 +667,7 @@ private IOperation CreateBoundConversionOperation(BoundConversion boundConversio
                 bool isChecked = conversion.IsNumeric && boundConversion.Checked;
                 ITypeSymbol type = boundConversion.Type;
                 Optional<object> constantValue = ConvertToOptional(boundConversion.ConstantValue);
-                return new LazyCSharpConversionExpression(operand, conversion, isExplicit, isTryCast, isChecked, _semanticModel, syntax, type, constantValue, isImplicit);
+                return new LazyCSharpConversionExpression(operand, conversion, isExplicit, isTryCast, isChecked, _semanticModel, syntax, type, constantValue, isImplicit || !isExplicit);
             }
         }
 
@@ -1311,18 +1312,21 @@ private IOperation CreateBoundLocalDeclarationOperation(BoundLocalDeclaration bo
         {
             if (boundLocalDeclaration.Syntax.Kind() == SyntaxKind.LocalDeclarationStatement)
             {
-                Lazy<ImmutableArray<IVariableDeclaration>> declarations = new Lazy<ImmutableArray<IVariableDeclaration>>(() => ImmutableArray.Create(CreateVariableDeclaration(boundLocalDeclaration)));
-                SyntaxNode syntax = boundLocalDeclaration.Syntax;
+                var statement = (LocalDeclarationStatementSyntax)boundLocalDeclaration.Syntax;
+                var variableDeclarator = statement.Declaration.Variables.First();
+
+                Lazy<ImmutableArray<IVariableDeclaration>> declarations = new Lazy<ImmutableArray<IVariableDeclaration>>(() => ImmutableArray.Create(CreateVariableDeclaration(boundLocalDeclaration, variableDeclarator)));
+
                 ITypeSymbol type = null;
                 Optional<object> constantValue = default(Optional<object>);
                 bool isImplicit = boundLocalDeclaration.WasCompilerGenerated;
-                return new LazyVariableDeclarationStatement(declarations, _semanticModel, syntax, type, constantValue, isImplicit);
+                return new LazyVariableDeclarationStatement(declarations, _semanticModel, statement, type, constantValue, isImplicit);
             }
             else
             {
                 // we can get here if someone asked about 1 variable declarator on multi local declaration
                 Debug.Assert(boundLocalDeclaration.Syntax.Kind() == SyntaxKind.VariableDeclarator);
-                return CreateVariableDeclaration(boundLocalDeclaration);
+                return CreateVariableDeclaration(boundLocalDeclaration, boundLocalDeclaration.Syntax);
             }
         }
 
diff --git a/src/Compilers/CSharp/Portable/Operations/CSharpOperationFactory_Methods.cs b/src/Compilers/CSharp/Portable/Operations/CSharpOperationFactory_Methods.cs
index b67c6a0f48894bd9592ae861c622be986ad4d095..661fbf3e215b52eb343b3a3e8ad40a117ee0b8c5 100644
--- a/src/Compilers/CSharp/Portable/Operations/CSharpOperationFactory_Methods.cs
+++ b/src/Compilers/CSharp/Portable/Operations/CSharpOperationFactory_Methods.cs
@@ -49,9 +49,9 @@ internal IArgument CreateArgumentOperation(ArgumentKind kind, IParameterSymbol p
                 isImplicit: expression.WasCompilerGenerated);
         }
 
-        private IVariableDeclaration CreateVariableDeclaration(BoundLocalDeclaration boundLocalDeclaration)
+        private IVariableDeclaration CreateVariableDeclaration(BoundLocalDeclaration boundLocalDeclaration, SyntaxNode syntax)
         {
-            return OperationFactory.CreateVariableDeclaration(boundLocalDeclaration.LocalSymbol, Create(boundLocalDeclaration.InitializerOpt), _semanticModel, boundLocalDeclaration.Syntax);
+            return OperationFactory.CreateVariableDeclaration(boundLocalDeclaration.LocalSymbol, Create(boundLocalDeclaration.InitializerOpt), _semanticModel, syntax);
         }
 
         private IOperation CreateBoundCallInstanceOperation(BoundCall boundCall)
diff --git a/src/Compilers/CSharp/Test/Semantic/Diagnostics/DiagnosticAnalyzerTests.cs b/src/Compilers/CSharp/Test/Semantic/Diagnostics/DiagnosticAnalyzerTests.cs
index 0105ba2b26dbeb19a01b1a95ab7607b1ef5bd128..8a395434a8705ac8b9a0e28efd8c4f07ef2755be 100644
--- a/src/Compilers/CSharp/Test/Semantic/Diagnostics/DiagnosticAnalyzerTests.cs
+++ b/src/Compilers/CSharp/Test/Semantic/Diagnostics/DiagnosticAnalyzerTests.cs
@@ -2001,28 +2001,28 @@ void MixMethod()
             compilation.VerifyAnalyzerDiagnostics(analyzers, null, null, true,
                 Diagnostic("GeneratedCodeAnalyzerWarning", "var userVar = 0").WithArguments("Node: var userVar = 0").WithLocation(17, 9),
                 Diagnostic("GeneratedCodeAnalyzerWarning", "var mixMethodUserVar = 0").WithArguments("Node: var mixMethodUserVar = 0").WithLocation(26, 9),
-                Diagnostic("GeneratedCodeAnalyzerWarning", "var userVar = 0;").WithArguments("Operation: NonHiddenMethod").WithLocation(17, 9),
-                Diagnostic("GeneratedCodeAnalyzerWarning", "var mixMethodUserVar = 0;").WithArguments("Operation: MixMethod").WithLocation(26, 9),
+                Diagnostic("GeneratedCodeAnalyzerWarning", "userVar = 0").WithArguments("Operation: NonHiddenMethod").WithLocation(17, 13),
+                Diagnostic("GeneratedCodeAnalyzerWarning", "mixMethodUserVar = 0").WithArguments("Operation: MixMethod").WithLocation(26, 13),
                 Diagnostic("GeneratedCodeAnalyzerSummary").WithArguments("Node: var mixMethodUserVar = 0,Node: var userVar = 0,Operation: MixMethod,Operation: NonHiddenMethod").WithLocation(1, 1));
 
             analyzers = new DiagnosticAnalyzer[] { new GeneratedCodeSyntaxAndOperationAnalyzer(GeneratedCodeAnalysisFlags.Analyze, syntaxKinds, operationKinds) };
             compilation.VerifyAnalyzerDiagnostics(analyzers, null, null, true,
                 Diagnostic("GeneratedCodeAnalyzerWarning", "var userVar = 0").WithArguments("Node: var userVar = 0").WithLocation(17, 9),
-                Diagnostic("GeneratedCodeAnalyzerWarning", "var userVar = 0;").WithArguments("Operation: NonHiddenMethod").WithLocation(17, 9),
+                Diagnostic("GeneratedCodeAnalyzerWarning", "userVar = 0").WithArguments("Operation: NonHiddenMethod").WithLocation(17, 13),
                 Diagnostic("GeneratedCodeAnalyzerWarning", "var mixMethodUserVar = 0").WithArguments("Node: var mixMethodUserVar = 0").WithLocation(26, 9),
-                Diagnostic("GeneratedCodeAnalyzerWarning", "var mixMethodUserVar = 0;").WithArguments("Operation: MixMethod").WithLocation(26, 9),
+                Diagnostic("GeneratedCodeAnalyzerWarning", "mixMethodUserVar = 0").WithArguments("Operation: MixMethod").WithLocation(26, 13),
                 Diagnostic("GeneratedCodeAnalyzerSummary").WithArguments("Node: var hiddenVar = 0,Node: var mixMethodHiddenVar = 0,Node: var mixMethodUserVar = 0,Node: var userVar = 0,Operation: HiddenMethod,Operation: MixMethod,Operation: NonHiddenMethod").WithLocation(1, 1));
 
             analyzers = new DiagnosticAnalyzer[] { new GeneratedCodeSyntaxAndOperationAnalyzer(GeneratedCodeAnalysisFlags.Analyze | GeneratedCodeAnalysisFlags.ReportDiagnostics, syntaxKinds, operationKinds) };
             compilation.VerifyAnalyzerDiagnostics(analyzers, null, null, true,
                 Diagnostic("GeneratedCodeAnalyzerWarning", "var hiddenVar = 0").WithArguments("Node: var hiddenVar = 0").WithLocation(10, 9),
-                Diagnostic("GeneratedCodeAnalyzerWarning", "var hiddenVar = 0;").WithArguments("Operation: HiddenMethod").WithLocation(10, 9),
+                Diagnostic("GeneratedCodeAnalyzerWarning", "hiddenVar = 0").WithArguments("Operation: HiddenMethod").WithLocation(10, 13),
                 Diagnostic("GeneratedCodeAnalyzerWarning", "var userVar = 0").WithArguments("Node: var userVar = 0").WithLocation(17, 9),
-                Diagnostic("GeneratedCodeAnalyzerWarning", "var userVar = 0;").WithArguments("Operation: NonHiddenMethod").WithLocation(17, 9),
+                Diagnostic("GeneratedCodeAnalyzerWarning", "userVar = 0").WithArguments("Operation: NonHiddenMethod").WithLocation(17, 13),
                 Diagnostic("GeneratedCodeAnalyzerWarning", "var mixMethodHiddenVar = 0").WithArguments("Node: var mixMethodHiddenVar = 0").WithLocation(24, 9),
                 Diagnostic("GeneratedCodeAnalyzerWarning", "var mixMethodUserVar = 0").WithArguments("Node: var mixMethodUserVar = 0").WithLocation(26, 9),
-                Diagnostic("GeneratedCodeAnalyzerWarning", "var mixMethodHiddenVar = 0;").WithArguments("Operation: MixMethod").WithLocation(24, 9),
-                Diagnostic("GeneratedCodeAnalyzerWarning", "var mixMethodUserVar = 0;").WithArguments("Operation: MixMethod").WithLocation(26, 9),
+                Diagnostic("GeneratedCodeAnalyzerWarning", "mixMethodHiddenVar = 0").WithArguments("Operation: MixMethod").WithLocation(24, 13),
+                Diagnostic("GeneratedCodeAnalyzerWarning", "mixMethodUserVar = 0").WithArguments("Operation: MixMethod").WithLocation(26, 13),
                 Diagnostic("GeneratedCodeAnalyzerSummary").WithArguments("Node: var hiddenVar = 0,Node: var mixMethodHiddenVar = 0,Node: var mixMethodUserVar = 0,Node: var userVar = 0,Operation: HiddenMethod,Operation: MixMethod,Operation: NonHiddenMethod").WithLocation(1, 1));
         }
 
diff --git a/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IAnonymousFunctionExpression.cs b/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IAnonymousFunctionExpression.cs
index d03618490dd96a9dbe9e0f909be16972e1ee45ca..3682a5f9d7a7ea63a758a9d91ec0b79361de81bc 100644
--- a/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IAnonymousFunctionExpression.cs
+++ b/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IAnonymousFunctionExpression.cs
@@ -21,7 +21,7 @@ class Program
 {
     static void Main(string[] args)
     {
-        Action x /*<bind>*/= () => F()/*</bind>*/;
+        /*<bind>*/Action x = () => F();/*</bind>*/
     }
 
     static void F()
@@ -30,8 +30,8 @@ static void F()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'Action x /* ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'Action x /* ... *</bind>*/;')
+IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'Action x = () => F();')
+  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'x = () => F()')
     Variables: Local_1: System.Action x
     Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Action) (Syntax: '() => F()')
         Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
@@ -46,7 +46,7 @@ static void F()
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
-            VerifyOperationTreeAndDiagnosticsForTest<EqualsValueClauseSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         [CompilerTrait(CompilerFeature.IOperation)]
@@ -60,7 +60,7 @@ class Program
 {
     static void Main(string[] args)
     {
-        var x /*<bind>*/= () => F()/*</bind>*/;
+        /*<bind>*/var x = () => F();/*</bind>*/
     }
 
     static void F()
@@ -69,8 +69,8 @@ static void F()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'var x /*<bi ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'var x /*<bi ... *</bind>*/;')
+IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'var x = () => F();')
+  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'x = () => F()')
     Variables: Local_1: var x
     Initializer: IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null, IsInvalid) (Syntax: '() => F()')
         IBlockStatement (1 statements) (OperationKind.BlockStatement, IsInvalid) (Syntax: 'F()')
@@ -81,11 +81,11 @@ static void F()
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0815: Cannot assign lambda expression to an implicitly-typed variable
-                //         var x /*<bind>*/= () => F()/*</bind>*/;
-                Diagnostic(ErrorCode.ERR_ImplicitlyTypedVariableAssignedBadValue, "x /*<bind>*/= () => F()").WithArguments("lambda expression").WithLocation(8, 13),
+                //         /*<bind>*/var x = () => F();/*</bind>*/
+                Diagnostic(ErrorCode.ERR_ImplicitlyTypedVariableAssignedBadValue, "x = () => F()").WithArguments("lambda expression").WithLocation(8, 23),
             };
 
-            VerifyOperationTreeAndDiagnosticsForTest<EqualsValueClauseSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         [CompilerTrait(CompilerFeature.IOperation)]
@@ -99,7 +99,7 @@ class Program
 {
     static void Main(string[] args)
     {
-        Action<int> x /*<bind>*/= () => F()/*</bind>*/;
+        /*<bind>*/Action<int> x = () => F();/*</bind>*/
     }
 
     static void F()
@@ -108,8 +108,8 @@ static void F()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'Action<int> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'Action<int> ... *</bind>*/;')
+IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'Action<int> ...  () => F();')
+  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'x = () => F()')
     Variables: Local_1: System.Action<System.Int32> x
     Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Action<System.Int32>, IsInvalid) (Syntax: '() => F()')
         Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
@@ -126,7 +126,7 @@ static void F()
                 Diagnostic(ErrorCode.ERR_BadDelArgCount, "() => F()").WithArguments("System.Action<int>", "0").WithLocation(8, 35)
             };
 
-            VerifyOperationTreeAndDiagnosticsForTest<EqualsValueClauseSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         [CompilerTrait(CompilerFeature.IOperation)]
@@ -140,7 +140,7 @@ class Program
 {
     static void Main(string[] args)
     {
-        var x /*<bind>*/= () => F()/*</bind>*/;
+        /*<bind>*/var x = () => F();/*</bind>*/
     }
 
     static void F()
@@ -153,8 +153,8 @@ static void F()
             var syntaxTree = compilation.SyntaxTrees[0];
             var semanticModel = compilation.GetSemanticModel(syntaxTree);
 
-            var variableDeclaration = syntaxTree.GetRoot().DescendantNodes().OfType<VariableDeclarationSyntax>().Single();
-            var lambdaSyntax = (LambdaExpressionSyntax)variableDeclaration.Variables.Single().Initializer.Value;
+            var variableDeclaration = syntaxTree.GetRoot().DescendantNodes().OfType<LocalDeclarationStatementSyntax>().Single();
+            var lambdaSyntax = (LambdaExpressionSyntax)variableDeclaration.Declaration.Variables.Single().Initializer.Value;
 
             var variableDeclarationOperation = (IVariableDeclarationStatement)semanticModel.GetOperationInternal(variableDeclaration);
             var variableTreeLambdaOperation = (IAnonymousFunctionExpression)variableDeclarationOperation.Declarations.Single().Initializer;
diff --git a/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IArgument.cs b/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IArgument.cs
index 35a4c33f4af34c6c8e25966a086075199076d9fc..c0a74053d8758dd42cac05daedb37ea5e6802129 100644
--- a/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IArgument.cs
+++ b/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IArgument.cs
@@ -1444,13 +1444,15 @@ void M1()
 }
 ";
             string expectedOperationTree = @"
-IPropertyReferenceExpression: System.Int32 P.this[System.Int32 index] { set; } (OperationKind.PropertyReferenceExpression, Type: System.Int32, IsInvalid) (Syntax: 'this[10]')
-  Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: P, IsInvalid) (Syntax: 'this')
-  Arguments(1):
-      IArgument (ArgumentKind.Explicit, Matching Parameter: null) (OperationKind.Argument, IsInvalid) (Syntax: '10')
-        ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 10, IsInvalid) (Syntax: '10')
-        InConversion: null
-        OutConversion: null
+IInvalidExpression (OperationKind.InvalidExpression, Type: System.Int32, IsInvalid) (Syntax: 'this[10]')
+  Children(1):
+      IPropertyReferenceExpression: System.Int32 P.this[System.Int32 index] { set; } (OperationKind.PropertyReferenceExpression, Type: System.Int32, IsInvalid) (Syntax: 'this[10]')
+        Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: P, IsInvalid) (Syntax: 'this')
+        Arguments(1):
+            IArgument (ArgumentKind.Explicit, Matching Parameter: null) (OperationKind.Argument, IsInvalid) (Syntax: '10')
+              ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 10, IsInvalid) (Syntax: '10')
+              InConversion: null
+              OutConversion: null
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // file.cs(12,27): error CS0154: The property or indexer 'P.this[int]' cannot be used in this context because it lacks the get accessor
@@ -1481,13 +1483,15 @@ void M1()
 }
 ";
             string expectedOperationTree = @"
-IPropertyReferenceExpression: System.Int32 P.this[System.Int32 index] { get; } (OperationKind.PropertyReferenceExpression, Type: System.Int32, IsInvalid) (Syntax: 'this[10]')
-  Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: P, IsInvalid) (Syntax: 'this')
-  Arguments(1):
-      IArgument (ArgumentKind.Explicit, Matching Parameter: null) (OperationKind.Argument, IsInvalid) (Syntax: '10')
-        ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 10, IsInvalid) (Syntax: '10')
-        InConversion: null
-        OutConversion: null
+IInvalidExpression (OperationKind.InvalidExpression, Type: System.Int32, IsInvalid) (Syntax: 'this[10]')
+  Children(1):
+      IPropertyReferenceExpression: System.Int32 P.this[System.Int32 index] { get; } (OperationKind.PropertyReferenceExpression, Type: System.Int32, IsInvalid) (Syntax: 'this[10]')
+        Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: P, IsInvalid) (Syntax: 'this')
+        Arguments(1):
+            IArgument (ArgumentKind.Explicit, Matching Parameter: null) (OperationKind.Argument, IsInvalid) (Syntax: '10')
+              ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 10, IsInvalid) (Syntax: '10')
+              InConversion: null
+              OutConversion: null
 ";
 
             var expectedDiagnostics = new DiagnosticDescription[] {
diff --git a/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IConversionExpression.cs b/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IConversionExpression.cs
index dc3e055aee702b231ce95e6ed8b6dff7da7a9022..7270fdb3aba1fba7f2993449cfb4ef770e7816e1 100644
--- a/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IConversionExpression.cs
+++ b/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IConversionExpression.cs
@@ -1,4 +1,4 @@
-// Copyright (c) Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information.
+// Copyright (c) Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information.
 
 using System;
 using System.Linq;
@@ -30,12 +30,11 @@ static void Main(string[] args)
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'dynamic /*< ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'dynamic /*< ... *</bind>*/;')
-    Variables: Local_1: dynamic d1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: dynamic) (Syntax: 'o1')
-        Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: o1 (OperationKind.LocalReferenceExpression, Type: System.Object) (Syntax: 'o1')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'd1 = o1')
+  Variables: Local_1: dynamic d1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: dynamic) (Syntax: 'o1')
+      Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: o1 (OperationKind.LocalReferenceExpression, Type: System.Object) (Syntax: 'o1')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -61,10 +60,9 @@ static void Main(string[] args)
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'object /*<b ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'object /*<b ... *</bind>*/;')
-    Variables: Local_1: System.Object o2
-    Initializer: ILocalReferenceExpression: o1 (OperationKind.LocalReferenceExpression, Type: System.Object) (Syntax: 'o1')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'o2 = o1')
+  Variables: Local_1: System.Object o2
+  Initializer: ILocalReferenceExpression: o1 (OperationKind.LocalReferenceExpression, Type: System.Object) (Syntax: 'o1')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -86,12 +84,11 @@ static void Main(string[] args)
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'double /*<b ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'double /*<b ... *</bind>*/;')
-    Variables: Local_1: System.Double d1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Double) (Syntax: 'f1')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: f1 (OperationKind.LocalReferenceExpression, Type: System.Single) (Syntax: 'f1')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'd1 = f1')
+  Variables: Local_1: System.Double d1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Double) (Syntax: 'f1')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: f1 (OperationKind.LocalReferenceExpression, Type: System.Single) (Syntax: 'f1')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -114,12 +111,11 @@ static void Main(string[] args)
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'int /*<bind ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'int /*<bind ... *</bind>*/;')
-    Variables: Local_1: System.Int32 i1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32, IsInvalid) (Syntax: 'f1')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: f1 (OperationKind.LocalReferenceExpression, Type: System.Single, IsInvalid) (Syntax: 'f1')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'i1 = f1')
+  Variables: Local_1: System.Int32 i1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32, IsInvalid) (Syntax: 'f1')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: f1 (OperationKind.LocalReferenceExpression, Type: System.Single, IsInvalid) (Syntax: 'f1')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0266: Cannot implicitly convert type 'float' to 'int'. An explicit conversion exists (are you missing a cast?)
@@ -179,12 +175,11 @@ enum Enum1
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'Enum1 /*<bi ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'Enum1 /*<bi ... *</bind>*/;')
-    Variables: Local_1: Enum1 e1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: Enum1, Constant: 0) (Syntax: '0')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'e1 = 0')
+  Variables: Local_1: Enum1 e1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: Enum1, Constant: 0) (Syntax: '0')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0219: The variable 'e1' is assigned but its value is never used
@@ -215,12 +210,11 @@ enum Enum1
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'Enum1 /*<bi ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'Enum1 /*<bi ... *</bind>*/;')
-    Variables: Local_1: Enum1 e1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: Enum1, IsInvalid) (Syntax: 'i1')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: i1 (OperationKind.LocalReferenceExpression, Type: System.Int32, IsInvalid) (Syntax: 'i1')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'e1 = i1')
+  Variables: Local_1: Enum1 e1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: Enum1, IsInvalid) (Syntax: 'i1')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: i1 (OperationKind.LocalReferenceExpression, Type: System.Int32, IsInvalid) (Syntax: 'i1')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0266: Cannot implicitly convert type 'int' to 'Program.Enum1'. An explicit conversion exists (are you missing a cast?)
@@ -249,12 +243,11 @@ enum Enum1
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'Enum1 /*<bi ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'Enum1 /*<bi ... *</bind>*/;')
-    Variables: Local_1: Enum1 e1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: Enum1, IsInvalid) (Syntax: '1')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1, IsInvalid) (Syntax: '1')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'e1 = 1')
+  Variables: Local_1: Enum1 e1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: Enum1, IsInvalid) (Syntax: '1')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1, IsInvalid) (Syntax: '1')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0266: Cannot implicitly convert type 'int' to 'Program.Enum1'. An explicit conversion exists (are you missing a cast?)
@@ -315,19 +308,18 @@ static void Main(string[] args)
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'object /*<b ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'object /*<b ... *</bind>*/;')
-    Variables: Local_1: System.Object o
-    Initializer: ICoalesceExpression (OperationKind.CoalesceExpression, Type: System.Object) (Syntax: 'new object( ... Exception()')
-        Expression: IObjectCreationExpression (Constructor: System.Object..ctor()) (OperationKind.ObjectCreationExpression, Type: System.Object) (Syntax: 'new object()')
-            Arguments(0)
-            Initializer: null
-        WhenNull: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object) (Syntax: 'throw new Exception()')
-            Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-            Operand: IThrowExpression (OperationKind.ThrowExpression, Type: null) (Syntax: 'throw new Exception()')
-                IObjectCreationExpression (Constructor: System.Exception..ctor()) (OperationKind.ObjectCreationExpression, Type: System.Exception) (Syntax: 'new Exception()')
-                  Arguments(0)
-                  Initializer: null
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'o = new obj ... Exception()')
+  Variables: Local_1: System.Object o
+  Initializer: ICoalesceExpression (OperationKind.CoalesceExpression, Type: System.Object) (Syntax: 'new object( ... Exception()')
+      Expression: IObjectCreationExpression (Constructor: System.Object..ctor()) (OperationKind.ObjectCreationExpression, Type: System.Object) (Syntax: 'new object()')
+          Arguments(0)
+          Initializer: null
+      WhenNull: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object) (Syntax: 'throw new Exception()')
+          Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+          Operand: IThrowExpression (OperationKind.ThrowExpression, Type: null) (Syntax: 'throw new Exception()')
+              IObjectCreationExpression (Constructor: System.Exception..ctor()) (OperationKind.ObjectCreationExpression, Type: System.Exception) (Syntax: 'new Exception()')
+                Arguments(0)
+                Initializer: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -341,7 +333,7 @@ static void Main(string[] args)
                     },
                     OperationSelector = (operation) =>
                     {
-                        var initializer = ((IVariableDeclarationStatement)operation).Declarations.Single().Initializer;
+                        var initializer = ((IVariableDeclaration)operation).Initializer;
                         return (IConversionExpression)((ICoalesceExpression)initializer).WhenNull;
                     }
                 }.Verify);
@@ -394,12 +386,11 @@ static void Main(string[] args)
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'string /*<b ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'string /*<b ... *</bind>*/;')
-    Variables: Local_1: System.String s1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.String, Constant: null) (Syntax: 'null')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: null, Constant: null) (Syntax: 'null')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 's1 = null')
+  Variables: Local_1: System.String s1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.String, Constant: null) (Syntax: 'null')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: null, Constant: null) (Syntax: 'null')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0219: The variable 's1' is assigned but its value is never used
@@ -429,12 +420,11 @@ void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'S1? /*<bind ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'S1? /*<bind ... *</bind>*/;')
-    Variables: Local_1: S1? s1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: S1?, Constant: null) (Syntax: 'null')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: null, Constant: null) (Syntax: 'null')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 's1 = null')
+  Variables: Local_1: S1? s1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: S1?, Constant: null) (Syntax: 'null')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: null, Constant: null) (Syntax: 'null')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0219: The variable 's1' is assigned but its value is never used
@@ -460,12 +450,11 @@ static void Main(string[] args)
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'int /*<bind ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'int /*<bind ... *</bind>*/;')
-    Variables: Local_1: System.Int32 i1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32, IsInvalid) (Syntax: 'null')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: null, Constant: null, IsInvalid) (Syntax: 'null')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'i1 = null')
+  Variables: Local_1: System.Int32 i1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32, IsInvalid) (Syntax: 'null')
+      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: null, Constant: null, IsInvalid) (Syntax: 'null')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0037: Cannot convert null to 'int' because it is a non-nullable value type
@@ -493,12 +482,11 @@ void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'long /*<bin ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'long /*<bin ... *</bind>*/;')
-    Variables: Local_1: System.Int64 i1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int64, Constant: 0) (Syntax: 'default')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IDefaultValueExpression (OperationKind.DefaultValueExpression, Type: System.Int64, Constant: 0) (Syntax: 'default')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i1 = default')
+  Variables: Local_1: System.Int64 i1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int64, Constant: 0) (Syntax: 'default')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IDefaultValueExpression (OperationKind.DefaultValueExpression, Type: System.Int64, Constant: 0) (Syntax: 'default')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0219: The variable 'i1' is assigned but its value is never used
@@ -527,12 +515,11 @@ void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'long /*<bin ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'long /*<bin ... *</bind>*/;')
-    Variables: Local_1: System.Int64 i1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int64, Constant: 0) (Syntax: 'default(int)')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IDefaultValueExpression (OperationKind.DefaultValueExpression, Type: System.Int32, Constant: 0) (Syntax: 'default(int)')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i1 = default(int)')
+  Variables: Local_1: System.Int64 i1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int64, Constant: 0) (Syntax: 'default(int)')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IDefaultValueExpression (OperationKind.DefaultValueExpression, Type: System.Int32, Constant: 0) (Syntax: 'default(int)')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0219: The variable 'i1' is assigned but its value is never used
@@ -563,10 +550,9 @@ void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'string /*<b ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'string /*<b ... *</bind>*/;')
-    Variables: Local_1: System.String i1
-    Initializer: IDefaultValueExpression (OperationKind.DefaultValueExpression, Type: System.String, Constant: null) (Syntax: 'default(string)')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i1 = default(string)')
+  Variables: Local_1: System.String i1
+  Initializer: IDefaultValueExpression (OperationKind.DefaultValueExpression, Type: System.String, Constant: null) (Syntax: 'default(string)')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0219: The variable 'i1' is assigned but its value is never used
@@ -591,12 +577,11 @@ static void Main(string[] args)
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'int? /*<bin ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'int? /*<bin ... *</bind>*/;')
-    Variables: Local_1: System.Int32? i1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32?) (Syntax: '1')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1) (Syntax: '1')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i1 = 1')
+  Variables: Local_1: System.Int32? i1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32?) (Syntax: '1')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1) (Syntax: '1')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0219: The variable 'i1' is assigned but its value is never used
@@ -623,12 +608,11 @@ static void Main(string[] args)
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'long? /*<bi ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'long? /*<bi ... *</bind>*/;')
-    Variables: Local_1: System.Int64? l1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int64?) (Syntax: 'i1')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: i1 (OperationKind.LocalReferenceExpression, Type: System.Int32?) (Syntax: 'i1')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'l1 = i1')
+  Variables: Local_1: System.Int64? l1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int64?) (Syntax: 'i1')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: i1 (OperationKind.LocalReferenceExpression, Type: System.Int32?) (Syntax: 'i1')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -651,12 +635,11 @@ static void Main(string[] args)
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'int? /*<bin ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'int? /*<bin ... *</bind>*/;')
-    Variables: Local_1: System.Int32? i2
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32?) (Syntax: 'i1')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: i1 (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'i1')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i2 = i1')
+  Variables: Local_1: System.Int32? i2
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32?) (Syntax: 'i1')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: i1 (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'i1')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -679,12 +662,11 @@ static void Main(string[] args)
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'int /*<bind ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'int /*<bind ... *</bind>*/;')
-    Variables: Local_1: System.Int32 i2
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32, IsInvalid) (Syntax: 'i1')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: i1 (OperationKind.LocalReferenceExpression, Type: System.Int32?, IsInvalid) (Syntax: 'i1')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'i2 = i1')
+  Variables: Local_1: System.Int32 i2
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32, IsInvalid) (Syntax: 'i1')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: i1 (OperationKind.LocalReferenceExpression, Type: System.Int32?, IsInvalid) (Syntax: 'i1')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0266: Cannot implicitly convert type 'int?' to 'int'. An explicit conversion exists (are you missing a cast?)
@@ -713,17 +695,16 @@ static void Main(string[] args)
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'IFormattabl ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'IFormattabl ... *</bind>*/;')
-    Variables: Local_1: System.IFormattable f1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.IFormattable) (Syntax: '$""{1}""')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IInterpolatedStringExpression (OperationKind.InterpolatedStringExpression, Type: System.String) (Syntax: '$""{1}""')
-            Parts(1):
-                IInterpolation (OperationKind.Interpolation) (Syntax: '{1}')
-                  Expression: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1) (Syntax: '1')
-                  Alignment: null
-                  FormatString: null
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'f1 = $""{1}""')
+  Variables: Local_1: System.IFormattable f1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.IFormattable) (Syntax: '$""{1}""')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IInterpolatedStringExpression (OperationKind.InterpolatedStringExpression, Type: System.String) (Syntax: '$""{1}""')
+          Parts(1):
+              IInterpolation (OperationKind.Interpolation) (Syntax: '{1}')
+                Expression: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1) (Syntax: '1')
+                Alignment: null
+                FormatString: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -747,14 +728,13 @@ static void Main(string[] args)
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'object /*<b ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'object /*<b ... *</bind>*/;')
-    Variables: Local_1: System.Object o1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object) (Syntax: 'new C1()')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IObjectCreationExpression (Constructor: C1..ctor()) (OperationKind.ObjectCreationExpression, Type: C1) (Syntax: 'new C1()')
-            Arguments(0)
-            Initializer: null
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'o1 = new C1()')
+  Variables: Local_1: System.Object o1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object) (Syntax: 'new C1()')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IObjectCreationExpression (Constructor: C1..ctor()) (OperationKind.ObjectCreationExpression, Type: C1) (Syntax: 'new C1()')
+          Arguments(0)
+          Initializer: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -778,14 +758,13 @@ static void Main(string[] args)
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'dynamic /*< ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'dynamic /*< ... *</bind>*/;')
-    Variables: Local_1: dynamic d1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: dynamic) (Syntax: 'new C1()')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IObjectCreationExpression (Constructor: C1..ctor()) (OperationKind.ObjectCreationExpression, Type: C1) (Syntax: 'new C1()')
-            Arguments(0)
-            Initializer: null
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'd1 = new C1()')
+  Variables: Local_1: dynamic d1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: dynamic) (Syntax: 'new C1()')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IObjectCreationExpression (Constructor: C1..ctor()) (OperationKind.ObjectCreationExpression, Type: C1) (Syntax: 'new C1()')
+          Arguments(0)
+          Initializer: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -813,14 +792,13 @@ class C2 : C1
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'C1 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'C1 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: C1 c1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C1) (Syntax: 'new C2()')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IObjectCreationExpression (Constructor: C2..ctor()) (OperationKind.ObjectCreationExpression, Type: C2) (Syntax: 'new C2()')
-            Arguments(0)
-            Initializer: null
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'c1 = new C2()')
+  Variables: Local_1: C1 c1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C1) (Syntax: 'new C2()')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IObjectCreationExpression (Constructor: C2..ctor()) (OperationKind.ObjectCreationExpression, Type: C2) (Syntax: 'new C2()')
+          Arguments(0)
+          Initializer: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -848,14 +826,13 @@ class C2
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'C1 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'C1 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: C1 c1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C1, IsInvalid) (Syntax: 'new C2()')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IObjectCreationExpression (Constructor: C2..ctor()) (OperationKind.ObjectCreationExpression, Type: C2, IsInvalid) (Syntax: 'new C2()')
-            Arguments(0)
-            Initializer: null
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'c1 = new C2()')
+  Variables: Local_1: C1 c1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C1, IsInvalid) (Syntax: 'new C2()')
+      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IObjectCreationExpression (Constructor: C2..ctor()) (OperationKind.ObjectCreationExpression, Type: C2, IsInvalid) (Syntax: 'new C2()')
+          Arguments(0)
+          Initializer: null
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0029: Cannot implicitly convert type 'C2' to 'C1'
@@ -883,13 +860,12 @@ static void Main(string[] args)
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'C1 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'C1 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: C1 c1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C1, IsInvalid) (Syntax: 'new/*</bind>*/')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IInvalidExpression (OperationKind.InvalidExpression, Type: ?, IsInvalid) (Syntax: 'new/*</bind>*/')
-            Children(0)
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'c1 = new/*</bind>*/')
+  Variables: Local_1: C1 c1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C1, IsInvalid) (Syntax: 'new/*</bind>*/')
+      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IInvalidExpression (OperationKind.InvalidExpression, Type: ?, IsInvalid) (Syntax: 'new/*</bind>*/')
+          Children(0)
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS1031: Type expected
@@ -924,14 +900,13 @@ static void Main(string[] args)
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'I1 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'I1 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: I1 i1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I1) (Syntax: 'new C1()')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IObjectCreationExpression (Constructor: C1..ctor()) (OperationKind.ObjectCreationExpression, Type: C1) (Syntax: 'new C1()')
-            Arguments(0)
-            Initializer: null
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i1 = new C1()')
+  Variables: Local_1: I1 i1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I1) (Syntax: 'new C1()')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IObjectCreationExpression (Constructor: C1..ctor()) (OperationKind.ObjectCreationExpression, Type: C1) (Syntax: 'new C1()')
+          Arguments(0)
+          Initializer: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -959,14 +934,13 @@ static void Main(string[] args)
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'I1 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'I1 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: I1 i1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I1, IsInvalid) (Syntax: 'new C1()')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IObjectCreationExpression (Constructor: C1..ctor()) (OperationKind.ObjectCreationExpression, Type: C1, IsInvalid) (Syntax: 'new C1()')
-            Arguments(0)
-            Initializer: null
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'i1 = new C1()')
+  Variables: Local_1: I1 i1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I1, IsInvalid) (Syntax: 'new C1()')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IObjectCreationExpression (Constructor: C1..ctor()) (OperationKind.ObjectCreationExpression, Type: C1, IsInvalid) (Syntax: 'new C1()')
+          Arguments(0)
+          Initializer: null
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0266: Cannot implicitly convert type 'C1' to 'I1'. An explicit conversion exists (are you missing a cast?)
@@ -998,13 +972,12 @@ static void Main(string[] args)
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'C1 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'C1 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: C1 i1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C1, IsInvalid) (Syntax: 'new I1()')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IInvalidExpression (OperationKind.InvalidExpression, Type: I1, IsInvalid) (Syntax: 'new I1()')
-            Children(0)
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'i1 = new I1()')
+  Variables: Local_1: C1 i1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C1, IsInvalid) (Syntax: 'new I1()')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IInvalidExpression (OperationKind.InvalidExpression, Type: I1, IsInvalid) (Syntax: 'new I1()')
+          Children(0)
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0144: Cannot create an instance of the abstract class or interface 'I1'
@@ -1041,12 +1014,11 @@ static void Main(string[] args)
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'I1 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'I1 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: I1 i1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I1) (Syntax: 'i2')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: i2 (OperationKind.LocalReferenceExpression, Type: I2) (Syntax: 'i2')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i1 = i2')
+  Variables: Local_1: I1 i1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I1) (Syntax: 'i2')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: i2 (OperationKind.LocalReferenceExpression, Type: I2) (Syntax: 'i2')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -1079,12 +1051,11 @@ static void Main(string[] args)
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'I1 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'I1 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: I1 i1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I1, IsInvalid) (Syntax: 'i2')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: i2 (OperationKind.LocalReferenceExpression, Type: I2, IsInvalid) (Syntax: 'i2')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'i1 = i2')
+  Variables: Local_1: I1 i1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I1, IsInvalid) (Syntax: 'i2')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: i2 (OperationKind.LocalReferenceExpression, Type: I2, IsInvalid) (Syntax: 'i2')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0266: Cannot implicitly convert type 'I2' to 'I1'. An explicit conversion exists (are you missing a cast?)
@@ -1117,12 +1088,11 @@ class C2 : C1
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'C1[] /*<bin ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'C1[] /*<bin ... *</bind>*/;')
-    Variables: Local_1: C1[] c1arr
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C1[]) (Syntax: 'c2arr')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: c2arr (OperationKind.LocalReferenceExpression, Type: C2[]) (Syntax: 'c2arr')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'c1arr = c2arr')
+  Variables: Local_1: C1[] c1arr
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C1[]) (Syntax: 'c2arr')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: c2arr (OperationKind.LocalReferenceExpression, Type: C2[]) (Syntax: 'c2arr')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -1151,12 +1121,11 @@ class C2 : C1
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'C1[][] /*<b ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'C1[][] /*<b ... *</bind>*/;')
-    Variables: Local_1: C1[][] c1arr
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C1[][], IsInvalid) (Syntax: 'c2arr')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: c2arr (OperationKind.LocalReferenceExpression, Type: C2[], IsInvalid) (Syntax: 'c2arr')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'c1arr = c2arr')
+  Variables: Local_1: C1[][] c1arr
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C1[][], IsInvalid) (Syntax: 'c2arr')
+      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: c2arr (OperationKind.LocalReferenceExpression, Type: C2[], IsInvalid) (Syntax: 'c2arr')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0029: Cannot implicitly convert type 'C2[]' to 'C1[][]'
@@ -1189,12 +1158,11 @@ class C2
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'C1[] /*<bin ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'C1[] /*<bin ... *</bind>*/;')
-    Variables: Local_1: C1[] c1arr
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C1[], IsInvalid) (Syntax: 'c2arr')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: c2arr (OperationKind.LocalReferenceExpression, Type: C2[], IsInvalid) (Syntax: 'c2arr')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'c1arr = c2arr')
+  Variables: Local_1: C1[] c1arr
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C1[], IsInvalid) (Syntax: 'c2arr')
+      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: c2arr (OperationKind.LocalReferenceExpression, Type: C2[], IsInvalid) (Syntax: 'c2arr')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0029: Cannot implicitly convert type 'C2[]' to 'C1[]'
@@ -1230,15 +1198,14 @@ struct S1 : I1
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'I1[] /*<bin ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'I1[] /*<bin ... *</bind>*/;')
-    Variables: Local_1: I1[] i1arr
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I1[], IsInvalid) (Syntax: 'new S1[10]')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IArrayCreationExpression (Element Type: S1) (OperationKind.ArrayCreationExpression, Type: S1[], IsInvalid) (Syntax: 'new S1[10]')
-            Dimension Sizes(1):
-                ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 10, IsInvalid) (Syntax: '10')
-            Initializer: null
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'i1arr = new S1[10]')
+  Variables: Local_1: I1[] i1arr
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I1[], IsInvalid) (Syntax: 'new S1[10]')
+      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IArrayCreationExpression (Element Type: S1) (OperationKind.ArrayCreationExpression, Type: S1[], IsInvalid) (Syntax: 'new S1[10]')
+          Dimension Sizes(1):
+              ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 10, IsInvalid) (Syntax: '10')
+          Initializer: null
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0029: Cannot implicitly convert type 'S1[]' to 'I1[]'
@@ -1266,15 +1233,14 @@ static void Main(string[] args)
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'Array /*<bi ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'Array /*<bi ... *</bind>*/;')
-    Variables: Local_1: System.Array a1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Array) (Syntax: 'new object[10]')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IArrayCreationExpression (Element Type: System.Object) (OperationKind.ArrayCreationExpression, Type: System.Object[]) (Syntax: 'new object[10]')
-            Dimension Sizes(1):
-                ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 10) (Syntax: '10')
-            Initializer: null
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'a1 = new object[10]')
+  Variables: Local_1: System.Array a1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Array) (Syntax: 'new object[10]')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IArrayCreationExpression (Element Type: System.Object) (OperationKind.ArrayCreationExpression, Type: System.Object[]) (Syntax: 'new object[10]')
+          Dimension Sizes(1):
+              ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 10) (Syntax: '10')
+          Initializer: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -1298,15 +1264,14 @@ static void Main(string[] args)
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'Array /*<bi ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'Array /*<bi ... *</bind>*/;')
-    Variables: Local_1: System.Array a1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Array) (Syntax: 'new int[10][]')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IArrayCreationExpression (Element Type: System.Int32[]) (OperationKind.ArrayCreationExpression, Type: System.Int32[][]) (Syntax: 'new int[10][]')
-            Dimension Sizes(1):
-                ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 10) (Syntax: '10')
-            Initializer: null
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'a1 = new int[10][]')
+  Variables: Local_1: System.Array a1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Array) (Syntax: 'new int[10][]')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IArrayCreationExpression (Element Type: System.Int32[]) (OperationKind.ArrayCreationExpression, Type: System.Int32[][]) (Syntax: 'new int[10][]')
+          Dimension Sizes(1):
+              ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 10) (Syntax: '10')
+          Initializer: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -1330,14 +1295,13 @@ static void Main(string[] args)
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'Array /*<bi ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'Array /*<bi ... *</bind>*/;')
-    Variables: Local_1: System.Array a1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Array, IsInvalid) (Syntax: 'new object()')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IObjectCreationExpression (Constructor: System.Object..ctor()) (OperationKind.ObjectCreationExpression, Type: System.Object, IsInvalid) (Syntax: 'new object()')
-            Arguments(0)
-            Initializer: null
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'a1 = new object()')
+  Variables: Local_1: System.Array a1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Array, IsInvalid) (Syntax: 'new object()')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IObjectCreationExpression (Constructor: System.Object..ctor()) (OperationKind.ObjectCreationExpression, Type: System.Object, IsInvalid) (Syntax: 'new object()')
+          Arguments(0)
+          Initializer: null
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0266: Cannot implicitly convert type 'object' to 'System.Array'. An explicit conversion exists (are you missing a cast?)
@@ -1365,15 +1329,14 @@ static void Main(string[] args)
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'IList<int>  ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'IList<int>  ... *</bind>*/;')
-    Variables: Local_1: System.Collections.Generic.IList<System.Int32> a1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Collections.Generic.IList<System.Int32>) (Syntax: 'new int[10]')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IArrayCreationExpression (Element Type: System.Int32) (OperationKind.ArrayCreationExpression, Type: System.Int32[]) (Syntax: 'new int[10]')
-            Dimension Sizes(1):
-                ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 10) (Syntax: '10')
-            Initializer: null
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'a1 = new int[10]')
+  Variables: Local_1: System.Collections.Generic.IList<System.Int32> a1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Collections.Generic.IList<System.Int32>) (Syntax: 'new int[10]')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IArrayCreationExpression (Element Type: System.Int32) (OperationKind.ArrayCreationExpression, Type: System.Int32[]) (Syntax: 'new int[10]')
+          Dimension Sizes(1):
+              ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 10) (Syntax: '10')
+          Initializer: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -1397,14 +1360,13 @@ static void Main(string[] args)
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'IList<int>  ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'IList<int>  ... *</bind>*/;')
-    Variables: Local_1: System.Collections.Generic.IList<System.Int32> a1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Collections.Generic.IList<System.Int32>, IsInvalid) (Syntax: 'new object()')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IObjectCreationExpression (Constructor: System.Object..ctor()) (OperationKind.ObjectCreationExpression, Type: System.Object, IsInvalid) (Syntax: 'new object()')
-            Arguments(0)
-            Initializer: null
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'a1 = new object()')
+  Variables: Local_1: System.Collections.Generic.IList<System.Int32> a1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Collections.Generic.IList<System.Int32>, IsInvalid) (Syntax: 'new object()')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IObjectCreationExpression (Constructor: System.Object..ctor()) (OperationKind.ObjectCreationExpression, Type: System.Object, IsInvalid) (Syntax: 'new object()')
+          Arguments(0)
+          Initializer: null
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0266: Cannot implicitly convert type 'object' to 'System.Collections.Generic.IList<int>'. An explicit conversion exists (are you missing a cast?)
@@ -1438,12 +1400,11 @@ void M2()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'Delegate /* ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'Delegate /* ... *</bind>*/;')
-    Variables: Local_1: System.Delegate d2
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Delegate) (Syntax: 'd1')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: d1 (OperationKind.LocalReferenceExpression, Type: C1.DType) (Syntax: 'd1')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'd2 = d1')
+  Variables: Local_1: System.Delegate d2
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Delegate) (Syntax: 'd1')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: d1 (OperationKind.LocalReferenceExpression, Type: C1.DType) (Syntax: 'd1')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -1473,14 +1434,13 @@ void M2()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'Delegate /* ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'Delegate /* ... *</bind>*/;')
-    Variables: Local_1: System.Delegate d2
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Delegate, IsInvalid) (Syntax: 'd1()')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IInvocationExpression (virtual void C1.DType.Invoke()) (OperationKind.InvocationExpression, Type: System.Void, IsInvalid) (Syntax: 'd1()')
-            Instance Receiver: ILocalReferenceExpression: d1 (OperationKind.LocalReferenceExpression, Type: C1.DType, IsInvalid) (Syntax: 'd1')
-            Arguments(0)
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'd2 = d1()')
+  Variables: Local_1: System.Delegate d2
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Delegate, IsInvalid) (Syntax: 'd1()')
+      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IInvocationExpression (virtual void C1.DType.Invoke()) (OperationKind.InvocationExpression, Type: System.Void, IsInvalid) (Syntax: 'd1()')
+          Instance Receiver: ILocalReferenceExpression: d1 (OperationKind.LocalReferenceExpression, Type: C1.DType, IsInvalid) (Syntax: 'd1')
+          Arguments(0)
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0029: Cannot implicitly convert type 'void' to 'System.Delegate'
@@ -1548,11 +1508,10 @@ void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'DType /*<bi ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'DType /*<bi ... *</bind>*/;')
-    Variables: Local_1: Program.DType d1
-    Initializer: IMethodBindingExpression: void Program.M1() (OperationKind.MethodBindingExpression, Type: Program.DType) (Syntax: 'M1')
-        Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: Program) (Syntax: 'M1')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'd1 = M1')
+  Variables: Local_1: Program.DType d1
+  Initializer: IMethodBindingExpression: void Program.M1() (OperationKind.MethodBindingExpression, Type: Program.DType) (Syntax: 'M1')
+      Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: Program) (Syntax: 'M1')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -1574,13 +1533,12 @@ void Main()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'DType /*<bi ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'DType /*<bi ... *</bind>*/;')
-    Variables: Local_1: Program.DType d1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: Program.DType, IsInvalid) (Syntax: 'M1')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IInvalidExpression (OperationKind.InvalidExpression, Type: ?, IsInvalid) (Syntax: 'M1')
-            Children(0)
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'd1 = M1')
+  Variables: Local_1: Program.DType d1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: Program.DType, IsInvalid) (Syntax: 'M1')
+      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IInvalidExpression (OperationKind.InvalidExpression, Type: ?, IsInvalid) (Syntax: 'M1')
+          Children(0)
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0103: The name 'M1' does not exist in the current context
@@ -1609,15 +1567,14 @@ void Main()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'DType /*<bi ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'DType /*<bi ... *</bind>*/;')
-    Variables: Local_1: Program.DType d1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: Program.DType) (Syntax: '() => { }')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null) (Syntax: '() => { }')
-            IBlockStatement (1 statements) (OperationKind.BlockStatement) (Syntax: '{ }')
-              IReturnStatement (OperationKind.ReturnStatement) (Syntax: '{ }')
-                ReturnedValue: null
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'd1 = () => { }')
+  Variables: Local_1: Program.DType d1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: Program.DType) (Syntax: '() => { }')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null) (Syntax: '() => { }')
+          IBlockStatement (1 statements) (OperationKind.BlockStatement) (Syntax: '{ }')
+            IReturnStatement (OperationKind.ReturnStatement) (Syntax: '{ }')
+              ReturnedValue: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -1640,13 +1597,12 @@ void Main()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'DType /*<bi ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'DType /*<bi ... *</bind>*/;')
-    Variables: Local_1: Program.DType d1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: Program.DType, IsInvalid) (Syntax: '(string s) => { }')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null, IsInvalid) (Syntax: '(string s) => { }')
-            IBlockStatement (0 statements) (OperationKind.BlockStatement, IsInvalid) (Syntax: '{ }')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'd1 = (string s) => { }')
+  Variables: Local_1: Program.DType d1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: Program.DType, IsInvalid) (Syntax: '(string s) => { }')
+      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null, IsInvalid) (Syntax: '(string s) => { }')
+          IBlockStatement (0 statements) (OperationKind.BlockStatement, IsInvalid) (Syntax: '{ }')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS1593: Delegate 'Program.DType' does not take 1 arguments
@@ -1674,18 +1630,17 @@ void Main()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'DType /*<bi ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'DType /*<bi ... *</bind>*/;')
-    Variables: Local_1: Program.DType d1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: Program.DType, IsInvalid) (Syntax: '() =>/*</bind>*/')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null, IsInvalid) (Syntax: '() =>/*</bind>*/')
-            IBlockStatement (2 statements) (OperationKind.BlockStatement, IsInvalid) (Syntax: '')
-              IExpressionStatement (OperationKind.ExpressionStatement, IsInvalid) (Syntax: '')
-                Expression: IInvalidExpression (OperationKind.InvalidExpression, Type: null, IsInvalid) (Syntax: '')
-                    Children(0)
-              IReturnStatement (OperationKind.ReturnStatement, IsInvalid) (Syntax: '')
-                ReturnedValue: null
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'd1 = () =>/*</bind>*/')
+  Variables: Local_1: Program.DType d1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: Program.DType, IsInvalid) (Syntax: '() =>/*</bind>*/')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null, IsInvalid) (Syntax: '() =>/*</bind>*/')
+          IBlockStatement (2 statements) (OperationKind.BlockStatement, IsInvalid) (Syntax: '')
+            IExpressionStatement (OperationKind.ExpressionStatement, IsInvalid) (Syntax: '')
+              Expression: IInvalidExpression (OperationKind.InvalidExpression, Type: null, IsInvalid) (Syntax: '')
+                  Children(0)
+            IReturnStatement (OperationKind.ReturnStatement, IsInvalid) (Syntax: '')
+              ReturnedValue: null
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS1525: Invalid expression term ';'
@@ -1752,14 +1707,13 @@ class C3 : C2
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'C1 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'C1 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: C1 c1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C1) (Syntax: 'new C3()')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IObjectCreationExpression (Constructor: C3..ctor()) (OperationKind.ObjectCreationExpression, Type: C3) (Syntax: 'new C3()')
-            Arguments(0)
-            Initializer: null
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'c1 = new C3()')
+  Variables: Local_1: C1 c1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C1) (Syntax: 'new C3()')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IObjectCreationExpression (Constructor: C3..ctor()) (OperationKind.ObjectCreationExpression, Type: C3) (Syntax: 'new C3()')
+          Arguments(0)
+          Initializer: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -1798,12 +1752,11 @@ class C4 : C3
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'I1<C4> /*<b ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'I1<C4> /*<b ... *</bind>*/;')
-    Variables: Local_1: I1<C4> c1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I1<C4>) (Syntax: 'c2')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: c2 (OperationKind.LocalReferenceExpression, Type: C2<C3>) (Syntax: 'c2')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'c1 = c2')
+  Variables: Local_1: I1<C4> c1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I1<C4>) (Syntax: 'c2')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: c2 (OperationKind.LocalReferenceExpression, Type: C2<C3>) (Syntax: 'c2')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -1842,12 +1795,11 @@ class C4 : C3
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'I1<C3> /*<b ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'I1<C3> /*<b ... *</bind>*/;')
-    Variables: Local_1: I1<C3> c1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I1<C3>, IsInvalid) (Syntax: 'c2')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: c2 (OperationKind.LocalReferenceExpression, Type: C2<C4>, IsInvalid) (Syntax: 'c2')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'c1 = c2')
+  Variables: Local_1: I1<C3> c1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I1<C3>, IsInvalid) (Syntax: 'c2')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: c2 (OperationKind.LocalReferenceExpression, Type: C2<C4>, IsInvalid) (Syntax: 'c2')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0266: Cannot implicitly convert type 'C2<C4>' to 'I1<C3>'. An explicit conversion exists (are you missing a cast?)
@@ -1890,12 +1842,11 @@ class C4 : C3
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'I1<C3> /*<b ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'I1<C3> /*<b ... *</bind>*/;')
-    Variables: Local_1: I1<C3> c1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I1<C3>) (Syntax: 'c2')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: c2 (OperationKind.LocalReferenceExpression, Type: C2<C4>) (Syntax: 'c2')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'c1 = c2')
+  Variables: Local_1: I1<C3> c1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I1<C3>) (Syntax: 'c2')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: c2 (OperationKind.LocalReferenceExpression, Type: C2<C4>) (Syntax: 'c2')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -1934,12 +1885,11 @@ class C4 : C3
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'I1<C4> /*<b ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'I1<C4> /*<b ... *</bind>*/;')
-    Variables: Local_1: I1<C4> c1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I1<C4>, IsInvalid) (Syntax: 'c2')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: c2 (OperationKind.LocalReferenceExpression, Type: C2<C3>, IsInvalid) (Syntax: 'c2')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'c1 = c2')
+  Variables: Local_1: I1<C4> c1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I1<C4>, IsInvalid) (Syntax: 'c2')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: c2 (OperationKind.LocalReferenceExpression, Type: C2<C3>, IsInvalid) (Syntax: 'c2')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0266: Cannot implicitly convert type 'C2<C3>' to 'I1<C4>'. An explicit conversion exists (are you missing a cast?)
@@ -1967,14 +1917,13 @@ static void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'IList<strin ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'IList<strin ... *</bind>*/;')
-    Variables: Local_1: System.Collections.Generic.IList<System.String> list
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Collections.Generic.IList<System.String>) (Syntax: 'new List<string>()')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IObjectCreationExpression (Constructor: System.Collections.Generic.List<System.String>..ctor()) (OperationKind.ObjectCreationExpression, Type: System.Collections.Generic.List<System.String>) (Syntax: 'new List<string>()')
-            Arguments(0)
-            Initializer: null
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'list = new  ... t<string>()')
+  Variables: Local_1: System.Collections.Generic.IList<System.String> list
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Collections.Generic.IList<System.String>) (Syntax: 'new List<string>()')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IObjectCreationExpression (Constructor: System.Collections.Generic.List<System.String>..ctor()) (OperationKind.ObjectCreationExpression, Type: System.Collections.Generic.List<System.String>) (Syntax: 'new List<string>()')
+          Arguments(0)
+          Initializer: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -2002,12 +1951,11 @@ class C2 : C1
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'C1 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'C1 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: C1 c1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C1) (Syntax: 'new T()')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ITypeParameterObjectCreationExpression (OperationKind.TypeParameterObjectCreationExpression, Type: T) (Syntax: 'new T()')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'c1 = new T()')
+  Variables: Local_1: C1 c1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C1) (Syntax: 'new T()')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ITypeParameterObjectCreationExpression (OperationKind.TypeParameterObjectCreationExpression, Type: T) (Syntax: 'new T()')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -2035,12 +1983,11 @@ class C2 : C1
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'C1 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'C1 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: C1 c1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C1, IsInvalid) (Syntax: 'new T()')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ITypeParameterObjectCreationExpression (OperationKind.TypeParameterObjectCreationExpression, Type: T, IsInvalid) (Syntax: 'new T()')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'c1 = new T()')
+  Variables: Local_1: C1 c1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C1, IsInvalid) (Syntax: 'new T()')
+      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ITypeParameterObjectCreationExpression (OperationKind.TypeParameterObjectCreationExpression, Type: T, IsInvalid) (Syntax: 'new T()')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0029: Cannot implicitly convert type 'T' to 'C1'
@@ -2071,12 +2018,11 @@ static void M1<T>()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'I1 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'I1 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: I1 i1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I1) (Syntax: 'new T()')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ITypeParameterObjectCreationExpression (OperationKind.TypeParameterObjectCreationExpression, Type: T) (Syntax: 'new T()')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i1 = new T()')
+  Variables: Local_1: I1 i1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I1) (Syntax: 'new T()')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ITypeParameterObjectCreationExpression (OperationKind.TypeParameterObjectCreationExpression, Type: T) (Syntax: 'new T()')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -2103,12 +2049,11 @@ static void M1<T>()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'I1 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'I1 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: I1 i1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I1, IsInvalid) (Syntax: 'new T()')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ITypeParameterObjectCreationExpression (OperationKind.TypeParameterObjectCreationExpression, Type: T, IsInvalid) (Syntax: 'new T()')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'i1 = new T()')
+  Variables: Local_1: I1 i1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I1, IsInvalid) (Syntax: 'new T()')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ITypeParameterObjectCreationExpression (OperationKind.TypeParameterObjectCreationExpression, Type: T, IsInvalid) (Syntax: 'new T()')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0266: Cannot implicitly convert type 'T' to 'I1'. An explicit conversion exists (are you missing a cast?)
@@ -2140,12 +2085,11 @@ class C1
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'U /*<bind>* ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'U /*<bind>* ... *</bind>*/;')
-    Variables: Local_1: U u
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: U) (Syntax: 'new T()')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ITypeParameterObjectCreationExpression (OperationKind.TypeParameterObjectCreationExpression, Type: T) (Syntax: 'new T()')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'u = new T()')
+  Variables: Local_1: U u
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: U) (Syntax: 'new T()')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ITypeParameterObjectCreationExpression (OperationKind.TypeParameterObjectCreationExpression, Type: T) (Syntax: 'new T()')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -2173,12 +2117,11 @@ class C1
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'U /*<bind>* ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'U /*<bind>* ... *</bind>*/;')
-    Variables: Local_1: U u
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: U, IsInvalid) (Syntax: 'new T()')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ITypeParameterObjectCreationExpression (OperationKind.TypeParameterObjectCreationExpression, Type: T, IsInvalid) (Syntax: 'new T()')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'u = new T()')
+  Variables: Local_1: U u
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: U, IsInvalid) (Syntax: 'new T()')
+      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ITypeParameterObjectCreationExpression (OperationKind.TypeParameterObjectCreationExpression, Type: T, IsInvalid) (Syntax: 'new T()')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0029: Cannot implicitly convert type 'T' to 'U'
@@ -2209,12 +2152,11 @@ class C1
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'T /*<bind>* ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'T /*<bind>* ... *</bind>*/;')
-    Variables: Local_1: T t
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: T, Constant: null) (Syntax: 'null')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: null, Constant: null) (Syntax: 'null')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 't = null')
+  Variables: Local_1: T t
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: T, Constant: null) (Syntax: 'null')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: null, Constant: null) (Syntax: 'null')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0219: The variable 't' is assigned but its value is never used
@@ -2245,12 +2187,11 @@ class C1
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'T /*<bind>* ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'T /*<bind>* ... *</bind>*/;')
-    Variables: Local_1: T t
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: T, IsInvalid) (Syntax: 'null')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: null, Constant: null, IsInvalid) (Syntax: 'null')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 't = null')
+  Variables: Local_1: T t
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: T, IsInvalid) (Syntax: 'null')
+      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: null, Constant: null, IsInvalid) (Syntax: 'null')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0403: Cannot convert null to type parameter 'T' because it could be a non-nullable value type. Consider using 'default(T)' instead.
@@ -2278,12 +2219,11 @@ static void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'object /*<b ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'object /*<b ... *</bind>*/;')
-    Variables: Local_1: System.Object o
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object) (Syntax: 'i')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: i (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'i')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'o = i')
+  Variables: Local_1: System.Object o
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object) (Syntax: 'i')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: i (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'i')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -2307,12 +2247,11 @@ static void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'dynamic /*< ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'dynamic /*< ... *</bind>*/;')
-    Variables: Local_1: dynamic d
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: dynamic) (Syntax: 'i')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: i (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'i')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'd = i')
+  Variables: Local_1: dynamic d
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: dynamic) (Syntax: 'i')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: i (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'i')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -2337,14 +2276,13 @@ void M1()
 
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'ValueType / ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'ValueType / ... *</bind>*/;')
-    Variables: Local_1: System.ValueType v1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.ValueType) (Syntax: 'new S1()')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IObjectCreationExpression (Constructor: S1..ctor()) (OperationKind.ObjectCreationExpression, Type: S1) (Syntax: 'new S1()')
-            Arguments(0)
-            Initializer: null
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'v1 = new S1()')
+  Variables: Local_1: System.ValueType v1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.ValueType) (Syntax: 'new S1()')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IObjectCreationExpression (Constructor: S1..ctor()) (OperationKind.ObjectCreationExpression, Type: S1) (Syntax: 'new S1()')
+          Arguments(0)
+          Initializer: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -2369,14 +2307,13 @@ void M1()
 
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'ValueType / ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'ValueType / ... *</bind>*/;')
-    Variables: Local_1: System.ValueType v1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.ValueType, IsInvalid) (Syntax: 'new C1()')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IObjectCreationExpression (Constructor: C1..ctor()) (OperationKind.ObjectCreationExpression, Type: C1, IsInvalid) (Syntax: 'new C1()')
-            Arguments(0)
-            Initializer: null
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'v1 = new C1()')
+  Variables: Local_1: System.ValueType v1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.ValueType, IsInvalid) (Syntax: 'new C1()')
+      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IObjectCreationExpression (Constructor: C1..ctor()) (OperationKind.ObjectCreationExpression, Type: C1, IsInvalid) (Syntax: 'new C1()')
+          Arguments(0)
+          Initializer: null
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0029: Cannot implicitly convert type 'C1' to 'System.ValueType'
@@ -2406,14 +2343,13 @@ void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'I1 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'I1 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: I1 i1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I1) (Syntax: 'new S1()')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IObjectCreationExpression (Constructor: S1..ctor()) (OperationKind.ObjectCreationExpression, Type: S1) (Syntax: 'new S1()')
-            Arguments(0)
-            Initializer: null
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i1 = new S1()')
+  Variables: Local_1: I1 i1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I1) (Syntax: 'new S1()')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IObjectCreationExpression (Constructor: S1..ctor()) (OperationKind.ObjectCreationExpression, Type: S1) (Syntax: 'new S1()')
+          Arguments(0)
+          Initializer: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -2439,14 +2375,13 @@ void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'I1 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'I1 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: I1 i1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I1, IsInvalid) (Syntax: 'new S1()')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IObjectCreationExpression (Constructor: S1..ctor()) (OperationKind.ObjectCreationExpression, Type: S1, IsInvalid) (Syntax: 'new S1()')
-            Arguments(0)
-            Initializer: null
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'i1 = new S1()')
+  Variables: Local_1: I1 i1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I1, IsInvalid) (Syntax: 'new S1()')
+      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IObjectCreationExpression (Constructor: S1..ctor()) (OperationKind.ObjectCreationExpression, Type: S1, IsInvalid) (Syntax: 'new S1()')
+          Arguments(0)
+          Initializer: null
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0029: Cannot implicitly convert type 'S1' to 'I1'
@@ -2477,12 +2412,11 @@ void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'I1 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'I1 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: I1 i1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I1) (Syntax: 's1')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: s1 (OperationKind.LocalReferenceExpression, Type: S1?) (Syntax: 's1')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i1 = s1')
+  Variables: Local_1: I1 i1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I1) (Syntax: 's1')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: s1 (OperationKind.LocalReferenceExpression, Type: S1?) (Syntax: 's1')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -2509,12 +2443,11 @@ void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'I1 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'I1 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: I1 i1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I1, IsInvalid) (Syntax: 's1')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: s1 (OperationKind.LocalReferenceExpression, Type: S1?, IsInvalid) (Syntax: 's1')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'i1 = s1')
+  Variables: Local_1: I1 i1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I1, IsInvalid) (Syntax: 's1')
+      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: s1 (OperationKind.LocalReferenceExpression, Type: S1?, IsInvalid) (Syntax: 's1')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0029: Cannot implicitly convert type 'S1?' to 'I1'
@@ -2548,13 +2481,12 @@ void M1()
 
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'Enum /*<bin ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'Enum /*<bin ... *</bind>*/;')
-    Variables: Local_1: System.Enum e
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Enum) (Syntax: 'E1.E')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IFieldReferenceExpression: E1.E (Static) (OperationKind.FieldReferenceExpression, Type: E1, Constant: 0) (Syntax: 'E1.E')
-            Instance Receiver: null
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'e = E1.E')
+  Variables: Local_1: System.Enum e
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Enum) (Syntax: 'E1.E')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IFieldReferenceExpression: E1.E (Static) (OperationKind.FieldReferenceExpression, Type: E1, Constant: 0) (Syntax: 'E1.E')
+          Instance Receiver: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -2584,12 +2516,11 @@ void M1()
 
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'Enum /*<bin ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'Enum /*<bin ... *</bind>*/;')
-    Variables: Local_1: System.Enum e
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Enum, IsInvalid) (Syntax: '1')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1, IsInvalid) (Syntax: '1')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'e = 1')
+  Variables: Local_1: System.Enum e
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Enum, IsInvalid) (Syntax: '1')
+      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1, IsInvalid) (Syntax: '1')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0029: Cannot implicitly convert type 'int' to 'System.Enum'
@@ -2616,12 +2547,11 @@ void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'string /*<b ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'string /*<b ... *</bind>*/;')
-    Variables: Local_1: System.String s1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.String) (Syntax: 'd1')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: d1 (OperationKind.LocalReferenceExpression, Type: dynamic) (Syntax: 'd1')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 's1 = d1')
+  Variables: Local_1: System.String s1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.String) (Syntax: 'd1')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: d1 (OperationKind.LocalReferenceExpression, Type: dynamic) (Syntax: 'd1')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -2644,12 +2574,11 @@ void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'int /*<bind ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'int /*<bind ... *</bind>*/;')
-    Variables: Local_1: System.Int32 i1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32) (Syntax: 'd1')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: d1 (OperationKind.LocalReferenceExpression, Type: dynamic) (Syntax: 'd1')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i1 = d1')
+  Variables: Local_1: System.Int32 i1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32) (Syntax: 'd1')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: d1 (OperationKind.LocalReferenceExpression, Type: dynamic) (Syntax: 'd1')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -2672,12 +2601,11 @@ void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'const sbyte ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'const sbyte ... *</bind>*/;')
-    Variables: Local_1: System.SByte s1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.SByte, Constant: 1) (Syntax: 'i1')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: i1 (OperationKind.LocalReferenceExpression, Type: System.Int32, Constant: 1) (Syntax: 'i1')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 's1 = i1')
+  Variables: Local_1: System.SByte s1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.SByte, Constant: 1) (Syntax: 'i1')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: i1 (OperationKind.LocalReferenceExpression, Type: System.Int32, Constant: 1) (Syntax: 'i1')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0219: The variable 's1' is assigned but its value is never used
@@ -2704,12 +2632,11 @@ void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'const sbyte ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'const sbyte ... *</bind>*/;')
-    Variables: Local_1: System.SByte s1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.SByte, IsInvalid) (Syntax: 'i1')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: i1 (OperationKind.LocalReferenceExpression, Type: System.Int32, Constant: 4096, IsInvalid) (Syntax: 'i1')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 's1 = i1')
+  Variables: Local_1: System.SByte s1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.SByte, IsInvalid) (Syntax: 'i1')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: i1 (OperationKind.LocalReferenceExpression, Type: System.Int32, Constant: 4096, IsInvalid) (Syntax: 'i1')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0031: Constant value '4096' cannot be converted to a 'sbyte'
@@ -2736,12 +2663,11 @@ void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'const sbyte ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'const sbyte ... *</bind>*/;')
-    Variables: Local_1: System.SByte s1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.SByte, IsInvalid) (Syntax: 'i1')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: i1 (OperationKind.LocalReferenceExpression, Type: System.Int32, IsInvalid) (Syntax: 'i1')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 's1 = i1')
+  Variables: Local_1: System.SByte s1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.SByte, IsInvalid) (Syntax: 'i1')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: i1 (OperationKind.LocalReferenceExpression, Type: System.Int32, IsInvalid) (Syntax: 'i1')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0266: Cannot implicitly convert type 'int' to 'sbyte'. An explicit conversion exists (are you missing a cast?)
@@ -2775,12 +2701,11 @@ class C2
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'C2 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'C2 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: C2 c2
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperatorMethod: C2 C2.op_Implicit(C1 c1)) (OperationKind.ConversionExpression, Type: C2) (Syntax: 'this')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: True) (MethodSymbol: C2 C2.op_Implicit(C1 c1))
-        Operand: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: C1) (Syntax: 'this')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'c2 = this')
+  Variables: Local_1: C2 c2
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperatorMethod: C2 C2.op_Implicit(C1 c1)) (OperationKind.ConversionExpression, Type: C2) (Syntax: 'this')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: True) (MethodSymbol: C2 C2.op_Implicit(C1 c1))
+      Operand: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: C1) (Syntax: 'this')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -2811,14 +2736,13 @@ class C2
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'C2 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'C2 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: C2 c2
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperatorMethod: C2 C2.op_Implicit(System.Int64 c1)) (OperationKind.ConversionExpression, Type: C2) (Syntax: 'i1')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: True) (MethodSymbol: C2 C2.op_Implicit(System.Int64 c1))
-        Operand: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int64) (Syntax: 'i1')
-            Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-            Operand: ILocalReferenceExpression: i1 (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'i1')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'c2 = i1')
+  Variables: Local_1: C2 c2
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperatorMethod: C2 C2.op_Implicit(System.Int64 c1)) (OperationKind.ConversionExpression, Type: C2) (Syntax: 'i1')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: True) (MethodSymbol: C2 C2.op_Implicit(System.Int64 c1))
+      Operand: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int64) (Syntax: 'i1')
+          Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+          Operand: ILocalReferenceExpression: i1 (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'i1')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -2857,16 +2781,15 @@ class C2
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'C2 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'C2 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: C2 c2
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperatorMethod: C2 C2.op_Implicit(System.Int64 c1)) (OperationKind.ConversionExpression, Type: C2) (Syntax: '(int)this')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: True) (MethodSymbol: C2 C2.op_Implicit(System.Int64 c1))
-        Operand: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int64) (Syntax: '(int)this')
-            Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-            Operand: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperatorMethod: System.Int32 C1.op_Implicit(C1 c1)) (OperationKind.ConversionExpression, Type: System.Int32) (Syntax: '(int)this')
-                Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: True) (MethodSymbol: System.Int32 C1.op_Implicit(C1 c1))
-                Operand: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: C1) (Syntax: 'this')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'c2 = (int)this')
+  Variables: Local_1: C2 c2
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperatorMethod: C2 C2.op_Implicit(System.Int64 c1)) (OperationKind.ConversionExpression, Type: C2) (Syntax: '(int)this')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: True) (MethodSymbol: C2 C2.op_Implicit(System.Int64 c1))
+      Operand: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int64) (Syntax: '(int)this')
+          Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+          Operand: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperatorMethod: System.Int32 C1.op_Implicit(C1 c1)) (OperationKind.ConversionExpression, Type: System.Int32) (Syntax: '(int)this')
+              Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: True) (MethodSymbol: System.Int32 C1.op_Implicit(C1 c1))
+              Operand: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: C1) (Syntax: 'this')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0219: The variable 'i1' is assigned but its value is never used
@@ -2905,12 +2828,11 @@ class C2
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'C2 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'C2 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: C2 c2
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C2, IsInvalid) (Syntax: 'this')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: C1, IsInvalid) (Syntax: 'this')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'c2 = this')
+  Variables: Local_1: C2 c2
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C2, IsInvalid) (Syntax: 'this')
+      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: C1, IsInvalid) (Syntax: 'this')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0029: Cannot implicitly convert type 'C1' to 'C2'
@@ -2955,12 +2877,11 @@ class C3
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'C3 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'C3 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: C3 c3
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperatorMethod: C3 C3.op_Implicit(C2 c2)) (OperationKind.ConversionExpression, Type: C3) (Syntax: 'this')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: True) (MethodSymbol: C3 C3.op_Implicit(C2 c2))
-        Operand: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: C2) (Syntax: 'this')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'c3 = this')
+  Variables: Local_1: C3 c3
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperatorMethod: C3 C3.op_Implicit(C2 c2)) (OperationKind.ConversionExpression, Type: C3) (Syntax: 'this')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: True) (MethodSymbol: C3 C3.op_Implicit(C2 c2))
+      Operand: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: C2) (Syntax: 'this')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -2984,15 +2905,14 @@ void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'Action /*<b ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'Action /*<b ... *</bind>*/;')
-    Variables: Local_1: System.Action a
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Action) (Syntax: 'delegate { }')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null) (Syntax: 'delegate { }')
-            IBlockStatement (1 statements) (OperationKind.BlockStatement) (Syntax: '{ }')
-              IReturnStatement (OperationKind.ReturnStatement) (Syntax: '{ }')
-                ReturnedValue: null
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'a = delegate { }')
+  Variables: Local_1: System.Action a
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Action) (Syntax: 'delegate { }')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null) (Syntax: 'delegate { }')
+          IBlockStatement (1 statements) (OperationKind.BlockStatement) (Syntax: '{ }')
+            IReturnStatement (OperationKind.ReturnStatement) (Syntax: '{ }')
+              ReturnedValue: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -3016,15 +2936,14 @@ void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'Action<int> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'Action<int> ... *</bind>*/;')
-    Variables: Local_1: System.Action<System.Int32> a
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Action<System.Int32>) (Syntax: 'delegate(int i) { }')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null) (Syntax: 'delegate(int i) { }')
-            IBlockStatement (1 statements) (OperationKind.BlockStatement) (Syntax: '{ }')
-              IReturnStatement (OperationKind.ReturnStatement) (Syntax: '{ }')
-                ReturnedValue: null
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'a = delegate(int i) { }')
+  Variables: Local_1: System.Action<System.Int32> a
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Action<System.Int32>) (Syntax: 'delegate(int i) { }')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null) (Syntax: 'delegate(int i) { }')
+          IBlockStatement (1 statements) (OperationKind.BlockStatement) (Syntax: '{ }')
+            IReturnStatement (OperationKind.ReturnStatement) (Syntax: '{ }')
+              ReturnedValue: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -3048,13 +2967,12 @@ void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'Action<int> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'Action<int> ... *</bind>*/;')
-    Variables: Local_1: System.Action<System.Int32> a
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Action<System.Int32>, IsInvalid) (Syntax: 'delegate() { }')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null, IsInvalid) (Syntax: 'delegate() { }')
-            IBlockStatement (0 statements) (OperationKind.BlockStatement, IsInvalid) (Syntax: '{ }')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'a = delegate() { }')
+  Variables: Local_1: System.Action<System.Int32> a
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Action<System.Int32>, IsInvalid) (Syntax: 'delegate() { }')
+      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null, IsInvalid) (Syntax: 'delegate() { }')
+          IBlockStatement (0 statements) (OperationKind.BlockStatement, IsInvalid) (Syntax: '{ }')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS1593: Delegate 'Action<int>' does not take 0 arguments
@@ -3082,12 +3000,11 @@ unsafe void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'void* /*<bi ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'void* /*<bi ... *</bind>*/;')
-    Variables: Local_1: System.Void* v1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Void*) (Syntax: 'null')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: null, Constant: null) (Syntax: 'null')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'v1 = null')
+  Variables: Local_1: System.Void* v1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Void*) (Syntax: 'null')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: null, Constant: null) (Syntax: 'null')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
             VerifyOperationTreeAndDiagnosticsForTest<VariableDeclaratorSyntax>(source, expectedOperationTree, expectedDiagnostics,
@@ -3112,12 +3029,11 @@ unsafe void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'void* /*<bi ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'void* /*<bi ... *</bind>*/;')
-    Variables: Local_1: System.Void* v1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Void*) (Syntax: 'i1')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: i1 (OperationKind.LocalReferenceExpression, Type: System.Int32*) (Syntax: 'i1')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'v1 = i1')
+  Variables: Local_1: System.Void* v1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Void*) (Syntax: 'i1')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: i1 (OperationKind.LocalReferenceExpression, Type: System.Int32*) (Syntax: 'i1')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -3143,12 +3059,11 @@ unsafe void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'int* /*<bin ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'int* /*<bin ... *</bind>*/;')
-    Variables: Local_1: System.Int32* i1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32*, IsInvalid) (Syntax: 'v1')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: v1 (OperationKind.LocalReferenceExpression, Type: System.Void*, IsInvalid) (Syntax: 'v1')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'i1 = v1')
+  Variables: Local_1: System.Int32* i1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32*, IsInvalid) (Syntax: 'v1')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: v1 (OperationKind.LocalReferenceExpression, Type: System.Void*, IsInvalid) (Syntax: 'v1')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0266: Cannot implicitly convert type 'void*' to 'int*'. An explicit conversion exists (are you missing a cast?)
@@ -3177,12 +3092,11 @@ unsafe void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'void* /*<bi ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'void* /*<bi ... *</bind>*/;')
-    Variables: Local_1: System.Void* v1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Void*, IsInvalid) (Syntax: '0')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0, IsInvalid) (Syntax: '0')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'v1 = 0')
+  Variables: Local_1: System.Void* v1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Void*, IsInvalid) (Syntax: '0')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0, IsInvalid) (Syntax: '0')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0266: Cannot implicitly convert type 'int' to 'void*'. An explicit conversion exists (are you missing a cast?)
@@ -3212,17 +3126,16 @@ static void Main(string[] args)
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'Expression< ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'Expression< ... *</bind>*/;')
-    Variables: Local_1: System.Linq.Expressions.Expression<System.Func<System.Int32, System.Boolean>> exp
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Linq.Expressions.Expression<System.Func<System.Int32, System.Boolean>>) (Syntax: 'num => num < 5')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null) (Syntax: 'num => num < 5')
-            IBlockStatement (1 statements) (OperationKind.BlockStatement) (Syntax: 'num < 5')
-              IReturnStatement (OperationKind.ReturnStatement) (Syntax: 'num < 5')
-                ReturnedValue: IBinaryOperatorExpression (BinaryOperatorKind.LessThan) (OperationKind.BinaryOperatorExpression, Type: System.Boolean) (Syntax: 'num < 5')
-                    Left: IParameterReferenceExpression: num (OperationKind.ParameterReferenceExpression, Type: System.Int32) (Syntax: 'num')
-                    Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 5) (Syntax: '5')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'exp = num => num < 5')
+  Variables: Local_1: System.Linq.Expressions.Expression<System.Func<System.Int32, System.Boolean>> exp
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Linq.Expressions.Expression<System.Func<System.Int32, System.Boolean>>) (Syntax: 'num => num < 5')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null) (Syntax: 'num => num < 5')
+          IBlockStatement (1 statements) (OperationKind.BlockStatement) (Syntax: 'num < 5')
+            IReturnStatement (OperationKind.ReturnStatement) (Syntax: 'num < 5')
+              ReturnedValue: IBinaryOperatorExpression (BinaryOperatorKind.LessThan) (OperationKind.BinaryOperatorExpression, Type: System.Boolean) (Syntax: 'num < 5')
+                  Left: IParameterReferenceExpression: num (OperationKind.ParameterReferenceExpression, Type: System.Int32) (Syntax: 'num')
+                  Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 5) (Syntax: '5')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -3288,16 +3201,15 @@ static void Main(string[] args)
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'Expression< ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'Expression< ... *</bind>*/;')
-    Variables: Local_1: System.Linq.Expressions.Expression<System.Func<System.Int32, System.Boolean>> exp
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Linq.Expressions.Expression<System.Func<System.Int32, System.Boolean>>, IsInvalid) (Syntax: 'num =>/*</bind>*/')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null, IsInvalid) (Syntax: 'num =>/*</bind>*/')
-            IBlockStatement (1 statements) (OperationKind.BlockStatement, IsInvalid) (Syntax: '')
-              IReturnStatement (OperationKind.ReturnStatement, IsInvalid) (Syntax: '')
-                ReturnedValue: IInvalidExpression (OperationKind.InvalidExpression, Type: null, IsInvalid) (Syntax: '')
-                    Children(0)
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'exp = num =>/*</bind>*/')
+  Variables: Local_1: System.Linq.Expressions.Expression<System.Func<System.Int32, System.Boolean>> exp
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Linq.Expressions.Expression<System.Func<System.Int32, System.Boolean>>, IsInvalid) (Syntax: 'num =>/*</bind>*/')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null, IsInvalid) (Syntax: 'num =>/*</bind>*/')
+          IBlockStatement (1 statements) (OperationKind.BlockStatement, IsInvalid) (Syntax: '')
+            IReturnStatement (OperationKind.ReturnStatement, IsInvalid) (Syntax: '')
+              ReturnedValue: IInvalidExpression (OperationKind.InvalidExpression, Type: null, IsInvalid) (Syntax: '')
+                  Children(0)
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS1525: Invalid expression term ';'
@@ -3378,15 +3290,15 @@ static void M1()
         {
             checked
             {
-                /*<bind>*/object o = null/*</bind>*/;
+                /*<bind>*/object o = null;/*</bind>*/
             }
         }
     }
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'object o =  ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'object o =  ... *</bind>*/;')
+IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'object o = null;')
+  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'o = null')
     Variables: Local_1: System.Object o
     Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object, Constant: null) (Syntax: 'null')
         Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
@@ -3398,7 +3310,7 @@ static void M1()
                 Diagnostic(ErrorCode.WRN_UnreferencedVarAssg, "o").WithArguments("o").WithLocation(10, 34)
             };
 
-            VerifyOperationTreeAndDiagnosticsForTest<VariableDeclarationSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         #endregion
@@ -3419,12 +3331,11 @@ public void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'int /*<bind ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'int /*<bind ... *</bind>*/;')
-    Variables: Local_1: System.Int32 i
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32, Constant: 1) (Syntax: '(int)1')
-        Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1) (Syntax: '1')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = (int)1')
+  Variables: Local_1: System.Int32 i
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32, Constant: 1) (Syntax: '(int)1')
+      Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1) (Syntax: '1')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0219: The variable 'i' is assigned but its value is never used
@@ -3450,14 +3361,13 @@ public void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'long /*<bin ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'long /*<bin ... *</bind>*/;')
-    Variables: Local_1: System.Int64 i
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int64, Constant: 1) (Syntax: '(int)1')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32, Constant: 1) (Syntax: '(int)1')
-            Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-            Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1) (Syntax: '1')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = (int)1')
+  Variables: Local_1: System.Int64 i
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int64, Constant: 1) (Syntax: '(int)1')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32, Constant: 1) (Syntax: '(int)1')
+          Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+          Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1) (Syntax: '1')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0219: The variable 'i' is assigned but its value is never used
@@ -3510,14 +3420,13 @@ public void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'int /*<bind ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'int /*<bind ... *</bind>*/;')
-    Variables: Local_1: System.Int32 i
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32, IsInvalid) (Syntax: '(float)1.0')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Single, Constant: 1, IsInvalid) (Syntax: '(float)1.0')
-            Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-            Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Double, Constant: 1, IsInvalid) (Syntax: '1.0')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'i = (float)1.0')
+  Variables: Local_1: System.Int32 i
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32, IsInvalid) (Syntax: '(float)1.0')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Single, Constant: 1, IsInvalid) (Syntax: '(float)1.0')
+          Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+          Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Double, Constant: 1, IsInvalid) (Syntax: '1.0')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0266: Cannot implicitly convert type 'float' to 'int'. An explicit conversion exists (are you missing a cast?)
@@ -3542,15 +3451,14 @@ public void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'long /*<bin ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'long /*<bin ... *</bind>*/;')
-    Variables: Local_1: System.Int64 i
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int64, IsInvalid) (Syntax: '(int)/*</bind>*/')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32, IsInvalid) (Syntax: '(int)/*</bind>*/')
-            Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-            Operand: IInvalidExpression (OperationKind.InvalidExpression, Type: null, IsInvalid) (Syntax: '')
-                Children(0)
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'i = (int)/*</bind>*/')
+  Variables: Local_1: System.Int64 i
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int64, IsInvalid) (Syntax: '(int)/*</bind>*/')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32, IsInvalid) (Syntax: '(int)/*</bind>*/')
+          Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+          Operand: IInvalidExpression (OperationKind.InvalidExpression, Type: null, IsInvalid) (Syntax: '')
+              Children(0)
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS1525: Invalid expression term ';'
@@ -3580,12 +3488,11 @@ enum E1
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'E1 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'E1 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: E1 e1
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: E1, Constant: 1) (Syntax: '(E1)1')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1) (Syntax: '1')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'e1 = (E1)1')
+  Variables: Local_1: E1 e1
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: E1, Constant: 1) (Syntax: '(E1)1')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1) (Syntax: '1')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0219: The variable 'e1' is assigned but its value is never used
@@ -3615,13 +3522,12 @@ enum E1
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'int /*<bind ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'int /*<bind ... *</bind>*/;')
-    Variables: Local_1: System.Int32 i
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32, Constant: 0) (Syntax: '(int)E1.One')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IFieldReferenceExpression: E1.One (Static) (OperationKind.FieldReferenceExpression, Type: E1, Constant: 0) (Syntax: 'E1.One')
-            Instance Receiver: null
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = (int)E1.One')
+  Variables: Local_1: System.Int32 i
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32, Constant: 0) (Syntax: '(int)E1.One')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IFieldReferenceExpression: E1.One (Static) (OperationKind.FieldReferenceExpression, Type: E1, Constant: 0) (Syntax: 'E1.One')
+          Instance Receiver: null
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0219: The variable 'i' is assigned but its value is never used
@@ -3656,13 +3562,12 @@ enum E2
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'E2 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'E2 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: E2 e2
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: E2, Constant: 0) (Syntax: '(E2)E1.One')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IFieldReferenceExpression: E1.One (Static) (OperationKind.FieldReferenceExpression, Type: E1, Constant: 0) (Syntax: 'E1.One')
-            Instance Receiver: null
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'e2 = (E2)E1.One')
+  Variables: Local_1: E2 e2
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: E2, Constant: 0) (Syntax: '(E2)E1.One')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IFieldReferenceExpression: E1.One (Static) (OperationKind.FieldReferenceExpression, Type: E1, Constant: 0) (Syntax: 'E1.One')
+          Instance Receiver: null
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0219: The variable 'e2' is assigned but its value is never used
@@ -3700,13 +3605,12 @@ enum E2 : byte
             // Note: The lack of a constant value for the conversion is expected here, it matches the semantic model.
             // Because the enum value is larger than the destination enum, the conversion is bad
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'E2 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'E2 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: E2 e2
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: E2, Constant: null, IsInvalid) (Syntax: '(E2)E1.One')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IFieldReferenceExpression: E1.One (Static) (OperationKind.FieldReferenceExpression, Type: E1, Constant: 1000, IsInvalid) (Syntax: 'E1.One')
-            Instance Receiver: null
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'e2 = (E2)E1.One')
+  Variables: Local_1: E2 e2
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: E2, Constant: null, IsInvalid) (Syntax: '(E2)E1.One')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IFieldReferenceExpression: E1.One (Static) (OperationKind.FieldReferenceExpression, Type: E1, Constant: 1000, IsInvalid) (Syntax: 'E1.One')
+          Instance Receiver: null
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0221: Constant value '1000' cannot be converted to a 'E2' (use 'unchecked' syntax to override)
@@ -3735,12 +3639,11 @@ static void Main(string[] args)
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'int? /*<bin ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'int? /*<bin ... *</bind>*/;')
-    Variables: Local_1: System.Int32? i
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32?) (Syntax: '(int?)l')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: l (OperationKind.LocalReferenceExpression, Type: System.Int64?) (Syntax: 'l')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = (int?)l')
+  Variables: Local_1: System.Int32? i
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32?) (Syntax: '(int?)l')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: l (OperationKind.LocalReferenceExpression, Type: System.Int64?) (Syntax: 'l')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -3762,12 +3665,11 @@ static void Main(string[] args)
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'int /*<bind ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'int /*<bind ... *</bind>*/;')
-    Variables: Local_1: System.Int32 i
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32) (Syntax: '(int)l')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: l (OperationKind.LocalReferenceExpression, Type: System.Int64?) (Syntax: 'l')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = (int)l')
+  Variables: Local_1: System.Int32 i
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32) (Syntax: '(int)l')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: l (OperationKind.LocalReferenceExpression, Type: System.Int64?) (Syntax: 'l')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -3789,12 +3691,11 @@ static void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'string /*<b ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'string /*<b ... *</bind>*/;')
-    Variables: Local_1: System.String s
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.String) (Syntax: '(string)o')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: o (OperationKind.LocalReferenceExpression, Type: System.Object) (Syntax: 'o')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 's = (string)o')
+  Variables: Local_1: System.String s
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.String) (Syntax: '(string)o')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: o (OperationKind.LocalReferenceExpression, Type: System.Object) (Syntax: 'o')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -3816,12 +3717,11 @@ static void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'string /*<b ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'string /*<b ... *</bind>*/;')
-    Variables: Local_1: System.String s
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.String) (Syntax: '(string)d')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: d (OperationKind.LocalReferenceExpression, Type: dynamic) (Syntax: 'd')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 's = (string)d')
+  Variables: Local_1: System.String s
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.String) (Syntax: '(string)d')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: d (OperationKind.LocalReferenceExpression, Type: dynamic) (Syntax: 'd')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -3847,12 +3747,11 @@ class C2 : C1
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'C2 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'C2 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: C2 c2
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C2) (Syntax: '(C2)c1')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: c1 (OperationKind.LocalReferenceExpression, Type: C1) (Syntax: 'c1')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'c2 = (C2)c1')
+  Variables: Local_1: C2 c2
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C2) (Syntax: '(C2)c1')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: c1 (OperationKind.LocalReferenceExpression, Type: C1) (Syntax: 'c1')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -3878,12 +3777,11 @@ class C2
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'C2 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'C2 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: C2 c2
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C2, IsInvalid) (Syntax: '(C2)c1')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: c1 (OperationKind.LocalReferenceExpression, Type: C1, IsInvalid) (Syntax: 'c1')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'c2 = (C2)c1')
+  Variables: Local_1: C2 c2
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C2, IsInvalid) (Syntax: '(C2)c1')
+      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: c1 (OperationKind.LocalReferenceExpression, Type: C1, IsInvalid) (Syntax: 'c1')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0030: Cannot convert type 'C1' to 'C2'
@@ -3911,12 +3809,11 @@ static void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'C1 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'C1 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: C1 c1
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C1) (Syntax: '(C1)i1')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: i1 (OperationKind.LocalReferenceExpression, Type: I1) (Syntax: 'i1')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'c1 = (C1)i1')
+  Variables: Local_1: C1 c1
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C1) (Syntax: '(C1)i1')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: i1 (OperationKind.LocalReferenceExpression, Type: I1) (Syntax: 'i1')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -3940,12 +3837,11 @@ static void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'C1 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'C1 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: C1 c1
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C1) (Syntax: '(C1)i1')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: i1 (OperationKind.LocalReferenceExpression, Type: I1) (Syntax: 'i1')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'c1 = (C1)i1')
+  Variables: Local_1: C1 c1
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C1) (Syntax: '(C1)i1')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: i1 (OperationKind.LocalReferenceExpression, Type: I1) (Syntax: 'i1')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -3969,12 +3865,11 @@ static void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'C1 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'C1 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: C1 c1
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C1, IsInvalid) (Syntax: '(C1)i1')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: i1 (OperationKind.LocalReferenceExpression, Type: I1, IsInvalid) (Syntax: 'i1')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'c1 = (C1)i1')
+  Variables: Local_1: C1 c1
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C1, IsInvalid) (Syntax: '(C1)i1')
+      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: i1 (OperationKind.LocalReferenceExpression, Type: I1, IsInvalid) (Syntax: 'i1')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0030: Cannot convert type 'I1' to 'C1'
@@ -4004,12 +3899,11 @@ static void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'I2 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'I2 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: I2 i2
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I2) (Syntax: '(I2)i1')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: i1 (OperationKind.LocalReferenceExpression, Type: I1) (Syntax: 'i1')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i2 = (I2)i1')
+  Variables: Local_1: I2 i2
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I2) (Syntax: '(I2)i1')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: i1 (OperationKind.LocalReferenceExpression, Type: I1) (Syntax: 'i1')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -4032,13 +3926,12 @@ static void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'I2 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'I2 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: I2 i2
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I2, IsInvalid) (Syntax: '(I2)()')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IInvalidExpression (OperationKind.InvalidExpression, Type: null, IsInvalid) (Syntax: '')
-            Children(0)
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'i2 = (I2)()')
+  Variables: Local_1: I2 i2
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I2, IsInvalid) (Syntax: '(I2)()')
+      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IInvalidExpression (OperationKind.InvalidExpression, Type: null, IsInvalid) (Syntax: '')
+          Children(0)
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS1525: Invalid expression term ')'
@@ -4066,12 +3959,11 @@ static void M1()
 class C2 : C1 { }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'C2[] /*<bin ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'C2[] /*<bin ... *</bind>*/;')
-    Variables: Local_1: C2[] c2arr
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C2[]) (Syntax: '(C2[])c1arr')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: c1arr (OperationKind.LocalReferenceExpression, Type: C1[]) (Syntax: 'c1arr')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'c2arr = (C2[])c1arr')
+  Variables: Local_1: C2[] c2arr
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C2[]) (Syntax: '(C2[])c1arr')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: c1arr (OperationKind.LocalReferenceExpression, Type: C1[]) (Syntax: 'c1arr')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -4095,12 +3987,11 @@ static void M1()
 class C2 { }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'C2[] /*<bin ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'C2[] /*<bin ... *</bind>*/;')
-    Variables: Local_1: C2[] c2arr
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C2[], IsInvalid) (Syntax: '(C2[])c1arr')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: c1arr (OperationKind.LocalReferenceExpression, Type: C1[], IsInvalid) (Syntax: 'c1arr')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'c2arr = (C2[])c1arr')
+  Variables: Local_1: C2[] c2arr
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C2[], IsInvalid) (Syntax: '(C2[])c1arr')
+      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: c1arr (OperationKind.LocalReferenceExpression, Type: C1[], IsInvalid) (Syntax: 'c1arr')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0030: Cannot convert type 'C1[]' to 'C2[]'
@@ -4126,12 +4017,11 @@ static void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'C1[][] /*<b ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'C1[][] /*<b ... *</bind>*/;')
-    Variables: Local_1: C1[][] c2arr
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C1[][], IsInvalid) (Syntax: '(C1[][])c1arr')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: c1arr (OperationKind.LocalReferenceExpression, Type: C1[], IsInvalid) (Syntax: 'c1arr')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'c2arr = (C1[][])c1arr')
+  Variables: Local_1: C1[][] c2arr
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C1[][], IsInvalid) (Syntax: '(C1[][])c1arr')
+      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: c1arr (OperationKind.LocalReferenceExpression, Type: C1[], IsInvalid) (Syntax: 'c1arr')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0030: Cannot convert type 'C1[]' to 'C1[][]'
@@ -4159,12 +4049,11 @@ static void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'C1[] /*<bin ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'C1[] /*<bin ... *</bind>*/;')
-    Variables: Local_1: C1[] c2arr
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C1[]) (Syntax: '(C1[])c1arr')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: c1arr (OperationKind.LocalReferenceExpression, Type: System.Array) (Syntax: 'c1arr')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'c2arr = (C1[])c1arr')
+  Variables: Local_1: C1[] c2arr
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C1[]) (Syntax: '(C1[])c1arr')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: c1arr (OperationKind.LocalReferenceExpression, Type: System.Array) (Syntax: 'c1arr')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -4189,12 +4078,11 @@ static void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'IList<C1> / ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'IList<C1> / ... *</bind>*/;')
-    Variables: Local_1: System.Collections.Generic.IList<C1> c1list
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Collections.Generic.IList<C1>) (Syntax: '(IList<C1>)c1arr')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: c1arr (OperationKind.LocalReferenceExpression, Type: C1[]) (Syntax: 'c1arr')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'c1list = (I ... t<C1>)c1arr')
+  Variables: Local_1: System.Collections.Generic.IList<C1> c1list
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Collections.Generic.IList<C1>) (Syntax: '(IList<C1>)c1arr')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: c1arr (OperationKind.LocalReferenceExpression, Type: C1[]) (Syntax: 'c1arr')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -4219,12 +4107,11 @@ static void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'IList<C1> / ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'IList<C1> / ... *</bind>*/;')
-    Variables: Local_1: System.Collections.Generic.IList<C1> c1list
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Collections.Generic.IList<C1>, IsInvalid) (Syntax: '(IList<C1>)c1arr')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: c1arr (OperationKind.LocalReferenceExpression, Type: C1[][], IsInvalid) (Syntax: 'c1arr')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'c1list = (I ... t<C1>)c1arr')
+  Variables: Local_1: System.Collections.Generic.IList<C1> c1list
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Collections.Generic.IList<C1>, IsInvalid) (Syntax: '(IList<C1>)c1arr')
+      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: c1arr (OperationKind.LocalReferenceExpression, Type: C1[][], IsInvalid) (Syntax: 'c1arr')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0030: Cannot convert type 'C1[][]' to 'System.Collections.Generic.IList<C1>'
@@ -4253,12 +4140,11 @@ static void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'C1[] /*<bin ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'C1[] /*<bin ... *</bind>*/;')
-    Variables: Local_1: C1[] c1arr
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C1[]) (Syntax: '(C1[])c1List')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: c1List (OperationKind.LocalReferenceExpression, Type: System.Collections.Generic.IList<C1>) (Syntax: 'c1List')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'c1arr = (C1[])c1List')
+  Variables: Local_1: C1[] c1arr
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C1[]) (Syntax: '(C1[])c1List')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: c1List (OperationKind.LocalReferenceExpression, Type: System.Collections.Generic.IList<C1>) (Syntax: 'c1List')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -4283,12 +4169,11 @@ static void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'C1[][] /*<b ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'C1[][] /*<b ... *</bind>*/;')
-    Variables: Local_1: C1[][] c1arr
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C1[][], IsInvalid) (Syntax: '(C1[][])c1List')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: c1List (OperationKind.LocalReferenceExpression, Type: System.Collections.Generic.IList<C1>, IsInvalid) (Syntax: 'c1List')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'c1arr = (C1[][])c1List')
+  Variables: Local_1: C1[][] c1arr
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: C1[][], IsInvalid) (Syntax: '(C1[][])c1List')
+      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: c1List (OperationKind.LocalReferenceExpression, Type: System.Collections.Generic.IList<C1>, IsInvalid) (Syntax: 'c1List')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0030: Cannot convert type 'System.Collections.Generic.IList<C1>' to 'C1[][]'
@@ -4316,12 +4201,11 @@ static void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'Action /*<b ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'Action /*<b ... *</bind>*/;')
-    Variables: Local_1: System.Action a
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Action) (Syntax: '(Action)d')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: d (OperationKind.LocalReferenceExpression, Type: System.Delegate) (Syntax: 'd')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'a = (Action)d')
+  Variables: Local_1: System.Action a
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Action) (Syntax: '(Action)d')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: d (OperationKind.LocalReferenceExpression, Type: System.Delegate) (Syntax: 'd')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -4359,12 +4243,11 @@ class C4 : C3
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'I1<C4> /*<b ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'I1<C4> /*<b ... *</bind>*/;')
-    Variables: Local_1: I1<C4> c1
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I1<C4>) (Syntax: '(I1<C4>)c2')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: c2 (OperationKind.LocalReferenceExpression, Type: C2<C3>) (Syntax: 'c2')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'c1 = (I1<C4>)c2')
+  Variables: Local_1: I1<C4> c1
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I1<C4>) (Syntax: '(I1<C4>)c2')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: c2 (OperationKind.LocalReferenceExpression, Type: C2<C3>) (Syntax: 'c2')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -4386,12 +4269,11 @@ void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'int /*<bind ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'int /*<bind ... *</bind>*/;')
-    Variables: Local_1: System.Int32 i
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32) (Syntax: '(int)o')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: o (OperationKind.LocalReferenceExpression, Type: System.Object) (Syntax: 'o')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = (int)o')
+  Variables: Local_1: System.Int32 i
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32) (Syntax: '(int)o')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: o (OperationKind.LocalReferenceExpression, Type: System.Object) (Syntax: 'o')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -4413,12 +4295,11 @@ void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'int /*<bind ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'int /*<bind ... *</bind>*/;')
-    Variables: Local_1: System.Int32 i
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32) (Syntax: '(int)d')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: d (OperationKind.LocalReferenceExpression, Type: dynamic) (Syntax: 'd')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = (int)d')
+  Variables: Local_1: System.Int32 i
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32) (Syntax: '(int)d')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: d (OperationKind.LocalReferenceExpression, Type: dynamic) (Syntax: 'd')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -4442,12 +4323,11 @@ void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'int /*<bind ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'int /*<bind ... *</bind>*/;')
-    Variables: Local_1: System.Int32 i
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32) (Syntax: '(int)v')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: v (OperationKind.LocalReferenceExpression, Type: System.ValueType) (Syntax: 'v')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = (int)v')
+  Variables: Local_1: System.Int32 i
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32) (Syntax: '(int)v')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: v (OperationKind.LocalReferenceExpression, Type: System.ValueType) (Syntax: 'v')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -4476,12 +4356,11 @@ enum E1
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'E1 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'E1 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: E1 e1
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: E1) (Syntax: '(E1)e')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: e (OperationKind.LocalReferenceExpression, Type: System.Enum) (Syntax: 'e')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'e1 = (E1)e')
+  Variables: Local_1: E1 e1
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: E1) (Syntax: '(E1)e')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: e (OperationKind.LocalReferenceExpression, Type: System.Enum) (Syntax: 'e')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -4510,12 +4389,11 @@ enum E1
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'E1? /*<bind ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'E1? /*<bind ... *</bind>*/;')
-    Variables: Local_1: E1? e1
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: E1?) (Syntax: '(E1?)e')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: e (OperationKind.LocalReferenceExpression, Type: System.Enum) (Syntax: 'e')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'e1 = (E1?)e')
+  Variables: Local_1: E1? e1
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: E1?) (Syntax: '(E1?)e')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: e (OperationKind.LocalReferenceExpression, Type: System.Enum) (Syntax: 'e')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -4544,14 +4422,13 @@ enum E1
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'int? /*<bin ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'int? /*<bin ... *</bind>*/;')
-    Variables: Local_1: System.Int32? e1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32?, IsInvalid) (Syntax: '(E1?)e')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: E1?, IsInvalid) (Syntax: '(E1?)e')
-            Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-            Operand: ILocalReferenceExpression: e (OperationKind.LocalReferenceExpression, Type: System.Enum, IsInvalid) (Syntax: 'e')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'e1 = (E1?)e')
+  Variables: Local_1: System.Int32? e1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32?, IsInvalid) (Syntax: '(E1?)e')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: E1?, IsInvalid) (Syntax: '(E1?)e')
+          Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+          Operand: ILocalReferenceExpression: e (OperationKind.LocalReferenceExpression, Type: System.Enum, IsInvalid) (Syntax: 'e')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0266: Cannot implicitly convert type 'E1?' to 'int?'. An explicit conversion exists (are you missing a cast?)
@@ -4583,12 +4460,11 @@ interface I1 { }
 struct S1 : I1 { }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'S1 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'S1 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: S1 s1
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: S1) (Syntax: '(S1)i')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: i (OperationKind.LocalReferenceExpression, Type: I1) (Syntax: 'i')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 's1 = (S1)i')
+  Variables: Local_1: S1 s1
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: S1) (Syntax: '(S1)i')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: i (OperationKind.LocalReferenceExpression, Type: I1) (Syntax: 'i')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -4616,12 +4492,11 @@ interface I1 { }
 struct S1 { }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'S1 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'S1 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: S1 s1
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: S1, IsInvalid) (Syntax: '(S1)i')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: i (OperationKind.LocalReferenceExpression, Type: I1, IsInvalid) (Syntax: 'i')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 's1 = (S1)i')
+  Variables: Local_1: S1 s1
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: S1, IsInvalid) (Syntax: '(S1)i')
+      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: i (OperationKind.LocalReferenceExpression, Type: I1, IsInvalid) (Syntax: 'i')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0030: Cannot convert type 'I1' to 'S1'
@@ -4654,12 +4529,11 @@ interface I1 { }
 struct S1 : I1 { }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'IList<S1> / ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'IList<S1> / ... *</bind>*/;')
-    Variables: Local_1: System.Collections.Generic.IList<S1> s1List
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Collections.Generic.IList<S1>) (Syntax: '(IList<S1>)i1List')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: ILocalReferenceExpression: i1List (OperationKind.LocalReferenceExpression, Type: System.Collections.Generic.IList<I1>) (Syntax: 'i1List')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 's1List = (I ... <S1>)i1List')
+  Variables: Local_1: System.Collections.Generic.IList<S1> s1List
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Collections.Generic.IList<S1>) (Syntax: '(IList<S1>)i1List')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: ILocalReferenceExpression: i1List (OperationKind.LocalReferenceExpression, Type: System.Collections.Generic.IList<I1>) (Syntax: 'i1List')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -4682,12 +4556,11 @@ class C1
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'T /*<bind>* ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'T /*<bind>* ... *</bind>*/;')
-    Variables: Local_1: T t
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: T) (Syntax: '(T)u')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IParameterReferenceExpression: u (OperationKind.ParameterReferenceExpression, Type: U) (Syntax: 'u')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 't = (T)u')
+  Variables: Local_1: T t
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: T) (Syntax: '(T)u')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IParameterReferenceExpression: u (OperationKind.ParameterReferenceExpression, Type: U) (Syntax: 'u')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -4710,12 +4583,11 @@ class C1
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'T /*<bind>* ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'T /*<bind>* ... *</bind>*/;')
-    Variables: Local_1: T t
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: T, IsInvalid) (Syntax: '(T)u')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IParameterReferenceExpression: u (OperationKind.ParameterReferenceExpression, Type: U, IsInvalid) (Syntax: 'u')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 't = (T)u')
+  Variables: Local_1: T t
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: T, IsInvalid) (Syntax: '(T)u')
+      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IParameterReferenceExpression: u (OperationKind.ParameterReferenceExpression, Type: U, IsInvalid) (Syntax: 'u')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0030: Cannot convert type 'U' to 'T'
@@ -4742,12 +4614,11 @@ void M1<T>(I1 i)
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'T /*<bind>* ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'T /*<bind>* ... *</bind>*/;')
-    Variables: Local_1: T t
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: T) (Syntax: '(T)i')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IParameterReferenceExpression: i (OperationKind.ParameterReferenceExpression, Type: I1) (Syntax: 'i')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 't = (T)i')
+  Variables: Local_1: T t
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: T) (Syntax: '(T)i')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IParameterReferenceExpression: i (OperationKind.ParameterReferenceExpression, Type: I1) (Syntax: 'i')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -4770,12 +4641,11 @@ void M1<T>(T t)
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'I1 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'I1 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: I1 i
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I1) (Syntax: '(I1)t')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IParameterReferenceExpression: t (OperationKind.ParameterReferenceExpression, Type: T) (Syntax: 't')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = (I1)t')
+  Variables: Local_1: I1 i
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I1) (Syntax: '(I1)t')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IParameterReferenceExpression: t (OperationKind.ParameterReferenceExpression, Type: T) (Syntax: 't')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -4801,12 +4671,11 @@ void M1()
 class C2 { }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'C2 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'C2 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: C2 c2
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperatorMethod: C2 C1.op_Implicit(C1 c1)) (OperationKind.ConversionExpression, Type: C2) (Syntax: '(C2)c1')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: True) (MethodSymbol: C2 C1.op_Implicit(C1 c1))
-        Operand: ILocalReferenceExpression: c1 (OperationKind.LocalReferenceExpression, Type: C1) (Syntax: 'c1')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'c2 = (C2)c1')
+  Variables: Local_1: C2 c2
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperatorMethod: C2 C1.op_Implicit(C1 c1)) (OperationKind.ConversionExpression, Type: C2) (Syntax: '(C2)c1')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: True) (MethodSymbol: C2 C1.op_Implicit(C1 c1))
+      Operand: ILocalReferenceExpression: c1 (OperationKind.LocalReferenceExpression, Type: C1) (Syntax: 'c1')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -4832,12 +4701,11 @@ void M1()
 class C2 { }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'C2 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'C2 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: C2 c2
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperatorMethod: C2 C1.op_Explicit(C1 c1)) (OperationKind.ConversionExpression, Type: C2) (Syntax: '(C2)c1')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: True) (MethodSymbol: C2 C1.op_Explicit(C1 c1))
-        Operand: ILocalReferenceExpression: c1 (OperationKind.LocalReferenceExpression, Type: C1) (Syntax: 'c1')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'c2 = (C2)c1')
+  Variables: Local_1: C2 c2
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperatorMethod: C2 C1.op_Explicit(C1 c1)) (OperationKind.ConversionExpression, Type: C2) (Syntax: '(C2)c1')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: True) (MethodSymbol: C2 C1.op_Explicit(C1 c1))
+      Operand: ILocalReferenceExpression: c1 (OperationKind.LocalReferenceExpression, Type: C1) (Syntax: 'c1')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -4865,14 +4733,13 @@ void M1()
 class C2 : I1 { }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'I1 /*<bind> ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'I1 /*<bind> ... *</bind>*/;')
-    Variables: Local_1: I1 i1
-    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I1) (Syntax: '(C2)c1')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperatorMethod: C2 C1.op_Explicit(C1 c1)) (OperationKind.ConversionExpression, Type: C2) (Syntax: '(C2)c1')
-            Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: True) (MethodSymbol: C2 C1.op_Explicit(C1 c1))
-            Operand: ILocalReferenceExpression: c1 (OperationKind.LocalReferenceExpression, Type: C1) (Syntax: 'c1')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i1 = (C2)c1')
+  Variables: Local_1: I1 i1
+  Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: I1) (Syntax: '(C2)c1')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperatorMethod: C2 C1.op_Explicit(C1 c1)) (OperationKind.ConversionExpression, Type: C2) (Syntax: '(C2)c1')
+          Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: True) (MethodSymbol: C2 C1.op_Explicit(C1 c1))
+          Operand: ILocalReferenceExpression: c1 (OperationKind.LocalReferenceExpression, Type: C1) (Syntax: 'c1')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -4895,15 +4762,14 @@ void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'Action /*<b ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'Action /*<b ... *</bind>*/;')
-    Variables: Local_1: System.Action a
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Action) (Syntax: '(Action)(() => { })')
-        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null) (Syntax: '() => { }')
-            IBlockStatement (1 statements) (OperationKind.BlockStatement) (Syntax: '{ }')
-              IReturnStatement (OperationKind.ReturnStatement) (Syntax: '{ }')
-                ReturnedValue: null
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'a = (Action)(() => { })')
+  Variables: Local_1: System.Action a
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Action) (Syntax: '(Action)(() => { })')
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null) (Syntax: '() => { }')
+          IBlockStatement (1 statements) (OperationKind.BlockStatement) (Syntax: '{ }')
+            IReturnStatement (OperationKind.ReturnStatement) (Syntax: '{ }')
+              ReturnedValue: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -4926,17 +4792,16 @@ void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'Action /*<b ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'Action /*<b ... *</bind>*/;')
-    Variables: Local_1: System.Action a
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Action, IsInvalid) (Syntax: '(Action)(() => 1)')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null, IsInvalid) (Syntax: '() => 1')
-            IBlockStatement (2 statements) (OperationKind.BlockStatement, IsInvalid) (Syntax: '1')
-              IExpressionStatement (OperationKind.ExpressionStatement, IsInvalid) (Syntax: '1')
-                Expression: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1, IsInvalid) (Syntax: '1')
-              IReturnStatement (OperationKind.ReturnStatement, IsInvalid) (Syntax: '1')
-                ReturnedValue: null
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'a = (Action)(() => 1)')
+  Variables: Local_1: System.Action a
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Action, IsInvalid) (Syntax: '(Action)(() => 1)')
+      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null, IsInvalid) (Syntax: '() => 1')
+          IBlockStatement (2 statements) (OperationKind.BlockStatement, IsInvalid) (Syntax: '1')
+            IExpressionStatement (OperationKind.ExpressionStatement, IsInvalid) (Syntax: '1')
+              Expression: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1, IsInvalid) (Syntax: '1')
+            IReturnStatement (OperationKind.ReturnStatement, IsInvalid) (Syntax: '1')
+              ReturnedValue: null
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0201: Only assignment, call, increment, decrement, and new object expressions can be used as a statement
@@ -4963,13 +4828,12 @@ void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'Action /*<b ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'Action /*<b ... *</bind>*/;')
-    Variables: Local_1: System.Action a
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Action, IsInvalid) (Syntax: '(Action)((s ...  s) => { })')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null, IsInvalid) (Syntax: '(string s) => { }')
-            IBlockStatement (0 statements) (OperationKind.BlockStatement, IsInvalid) (Syntax: '{ }')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'a = (Action ...  s) => { })')
+  Variables: Local_1: System.Action a
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Action, IsInvalid) (Syntax: '(Action)((s ...  s) => { })')
+      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null, IsInvalid) (Syntax: '(string s) => { }')
+          IBlockStatement (0 statements) (OperationKind.BlockStatement, IsInvalid) (Syntax: '{ }')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS1593: Delegate 'Action' does not take 1 arguments
@@ -5096,11 +4960,10 @@ void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'Action /*<b ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'Action /*<b ... *</bind>*/;')
-    Variables: Local_1: System.Action a
-    Initializer: IMethodBindingExpression: void C1.M2() (OperationKind.MethodBindingExpression, Type: System.Action) (Syntax: '(Action)M2')
-        Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: C1) (Syntax: 'M2')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'a = (Action)M2')
+  Variables: Local_1: System.Action a
+  Initializer: IMethodBindingExpression: void C1.M2() (OperationKind.MethodBindingExpression, Type: System.Action) (Syntax: '(Action)M2')
+      Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: C1) (Syntax: 'M2')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -5125,12 +4988,13 @@ void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'Action /*<b ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'Action /*<b ... *</bind>*/;')
-    Variables: Local_1: System.Action a
-    Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Action, IsInvalid) (Syntax: '(Action)M2')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IOperation:  (OperationKind.None, IsInvalid) (Syntax: 'M2')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'a = (Action)M2')
+  Variables: Local_1: System.Action a
+  Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Action, IsInvalid) (Syntax: '(Action)M2')
+      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IOperation:  (OperationKind.None, IsInvalid) (Syntax: 'M2')
+          Children(1):
+              IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: C1, IsInvalid) (Syntax: 'M2')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0030: Cannot convert type 'method' to 'Action'
@@ -5159,11 +5023,10 @@ void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'Action /*<b ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'Action /*<b ... *</bind>*/;')
-    Variables: Local_1: System.Action a
-    Initializer: IMethodBindingExpression: System.Int32 C1.M2() (OperationKind.MethodBindingExpression, Type: System.Action, IsInvalid) (Syntax: '(Action)M2')
-        Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: C1, IsInvalid) (Syntax: 'M2')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'a = (Action)M2')
+  Variables: Local_1: System.Action a
+  Initializer: IMethodBindingExpression: System.Int32 C1.M2() (OperationKind.MethodBindingExpression, Type: System.Action, IsInvalid) (Syntax: '(Action)M2')
+      Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: C1, IsInvalid) (Syntax: 'M2')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0407: 'int C1.M2()' has the wrong return type
@@ -5195,13 +5058,12 @@ void M1()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'Action /*<b ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'Action /*<b ... *</bind>*/;')
-    Variables: Local_1: System.Action a
-    Initializer: IOperation:  (OperationKind.None) (Syntax: 'new Action((Action)M2)')
-        Children(1):
-            IMethodBindingExpression: void C1.M2() (OperationKind.MethodBindingExpression, Type: System.Action) (Syntax: '(Action)M2')
-              Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: C1) (Syntax: 'M2')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'a = new Act ... (Action)M2)')
+  Variables: Local_1: System.Action a
+  Initializer: IOperation:  (OperationKind.None) (Syntax: 'new Action((Action)M2)')
+      Children(1):
+          IMethodBindingExpression: void C1.M2() (OperationKind.MethodBindingExpression, Type: System.Action) (Syntax: '(Action)M2')
+            Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: C1) (Syntax: 'M2')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -5231,6 +5093,8 @@ void M1()
       IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Action, IsInvalid) (Syntax: '(Action)M2')
         Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
         Operand: IOperation:  (OperationKind.None, IsInvalid) (Syntax: 'M2')
+            Children(1):
+                IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: C1, IsInvalid) (Syntax: 'M2')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0030: Cannot convert type 'method' to 'Action'
@@ -5376,15 +5240,15 @@ static void M1()
         {
             checked
             {
-                /*<bind>*/object o = (object)null/*</bind>*/;
+                /*<bind>*/object o = (object)null;/*</bind>*/
             }
         }
     }
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'object o =  ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'object o =  ... *</bind>*/;')
+IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'object o = (object)null;')
+  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'o = (object)null')
     Variables: Local_1: System.Object o
     Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object, Constant: null) (Syntax: '(object)null')
         Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
@@ -5396,7 +5260,7 @@ static void M1()
                 Diagnostic(ErrorCode.WRN_UnreferencedVarAssg, "o").WithArguments("o").WithLocation(10, 34)
             };
 
-            VerifyOperationTreeAndDiagnosticsForTest<VariableDeclarationSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
 
@@ -5412,7 +5276,10 @@ private class ExpectedSymbolVerifier
             public static SyntaxNode ReturnStatementSelector(SyntaxNode syntaxNode) => ((ReturnStatementSyntax)syntaxNode).Expression;
 
             public static IConversionExpression IVariableDeclarationStatementSelector(IOperation operation) =>
-                (IConversionExpression)((IVariableDeclarationStatement)operation).Declarations.Single().Initializer;
+                IVariableDeclarationSelector(((IVariableDeclarationStatement)operation).Declarations.Single());
+
+            public static IConversionExpression IVariableDeclarationSelector(IOperation operation) =>
+                (IConversionExpression)((IVariableDeclaration)operation).Initializer;
 
             public static IConversionExpression IReturnDeclarationStatementSelector(IOperation operation) =>
                 (IConversionExpression)((IReturnStatement)operation).ReturnedValue;
@@ -5482,6 +5349,8 @@ private IConversionExpression GetAndInvokeOperationSelector(IOperation operation
                 {
                     case IVariableDeclarationStatement _:
                         return IVariableDeclarationStatementSelector(operation);
+                    case IVariableDeclaration _:
+                        return IVariableDeclarationSelector(operation);
                     case IReturnStatement _:
                         return IReturnDeclarationStatementSelector(operation);
                     case IConversionExpression conv:
diff --git a/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IDynamicMemberReferenceExpression.cs b/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IDynamicMemberReferenceExpression.cs
index 67e285b5afcb44e25a201e888d2c0bdcfb8d4d83..8f8a01960881e5d478c40c72f2d99705a662ebd5 100644
--- a/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IDynamicMemberReferenceExpression.cs
+++ b/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IDynamicMemberReferenceExpression.cs
@@ -1,4 +1,4 @@
-// Copyright (c) Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information.
+// Copyright (c) Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information.
 
 using Microsoft.CodeAnalysis.CSharp.Syntax;
 using Microsoft.CodeAnalysis.Test.Utilities;
diff --git a/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IEventAssignmentExpression.cs b/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IEventAssignmentExpression.cs
index c985e0c857a9a467e3cc562d42cfca4d2001c1a6..a7cd5d7ef067bfb15559777a293d0bd5049cb9d5 100644
--- a/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IEventAssignmentExpression.cs
+++ b/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IEventAssignmentExpression.cs
@@ -200,6 +200,8 @@ void M()
   Handler: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.EventHandler, IsInvalid) (Syntax: 'Handler')
       Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
       Operand: IOperation:  (OperationKind.None, IsInvalid) (Syntax: 'Handler')
+          Children(1):
+              IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: C, IsInvalid) (Syntax: 'Handler')
 ";
             var expectedDiagnostics = new[] {                  
                 // file.cs(18,19): error CS0123: No overload for 'Handler' matches delegate 'EventHandler'
diff --git a/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IFieldReferenceExpression.cs b/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IFieldReferenceExpression.cs
index d70ac821b45455f075986fc537a4b38f7f31d21a..b45a21b779799de0bbd8ba1cb09dc915ba10d322 100644
--- a/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IFieldReferenceExpression.cs
+++ b/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IFieldReferenceExpression.cs
@@ -1,4 +1,4 @@
-// Copyright (c) Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information.
+// Copyright (c) Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information.
 
 using Microsoft.CodeAnalysis.CSharp.Syntax;
 using Microsoft.CodeAnalysis.CSharp.Test.Utilities;
@@ -51,8 +51,11 @@ public void M2(out int i )
 M2(out /*<bind>*/int i/*</bind>*/);
 ";
             string expectedOperationTree = @"
-IFieldReferenceExpression: System.Int32 Script.i (IsDeclaration: True) (OperationKind.FieldReferenceExpression, Type: System.Int32) (Syntax: 'int i')
-  Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: Script) (Syntax: 'i')
+IArgument (ArgumentKind.Explicit, Matching Parameter: i) (OperationKind.Argument) (Syntax: 'int i')
+  IFieldReferenceExpression: System.Int32 Script.i (IsDeclaration: True) (OperationKind.FieldReferenceExpression, Type: System.Int32) (Syntax: 'int i')
+    Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: Script) (Syntax: 'i')
+  InConversion: null
+  OutConversion: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -94,8 +97,11 @@ public void M2(out int i )
 M2(out /*<bind>*/var i/*</bind>*/);
 ";
             string expectedOperationTree = @"
-IFieldReferenceExpression: System.Int32 Script.i (IsDeclaration: True) (OperationKind.FieldReferenceExpression, Type: System.Int32) (Syntax: 'var i')
-  Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: Script) (Syntax: 'i')
+IArgument (ArgumentKind.Explicit, Matching Parameter: i) (OperationKind.Argument) (Syntax: 'var i')
+  IFieldReferenceExpression: System.Int32 Script.i (IsDeclaration: True) (OperationKind.FieldReferenceExpression, Type: System.Int32) (Syntax: 'var i')
+    Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: Script) (Syntax: 'i')
+  InConversion: null
+  OutConversion: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
diff --git a/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IForEachLoopStatement.cs b/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IForEachLoopStatement.cs
index 7fdc1a27b7d617dba67712f316be13f3c4981bb7..89dc3aa0ec11d8ecedbaaa2a460fb7ec3f1e5c98 100644
--- a/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IForEachLoopStatement.cs
+++ b/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IForEachLoopStatement.cs
@@ -470,13 +470,15 @@ static void Main()
   Body: IBlockStatement (1 statements, 1 locals) (OperationKind.BlockStatement) (Syntax: '{ ... }')
       Locals: Local_1: System.Boolean b
       IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'bool b = !x ... uals(null);')
-        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'bool b = !x ... uals(null);')
+        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'b = !x.Equals(null)')
           Variables: Local_1: System.Boolean b
           Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Boolean) (Syntax: '!x.Equals(null)')
               Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
               Operand: IUnaryOperatorExpression (UnaryOperatorKind.Not) (OperationKind.UnaryOperatorExpression, Type: System.Object) (Syntax: '!x.Equals(null)')
                   Operand: IInvocationExpression ( ? C.()) (OperationKind.InvocationExpression, Type: ?) (Syntax: 'x.Equals(null)')
                       Instance Receiver: IOperation:  (OperationKind.None) (Syntax: 'x.Equals')
+                          Children(1):
+                              ILocalReferenceExpression: x (OperationKind.LocalReferenceExpression, Type: MissingType) (Syntax: 'x')
                       Arguments(1):
                           IArgument (ArgumentKind.Explicit, Matching Parameter: null) (OperationKind.Argument) (Syntax: 'null')
                             ILiteralExpression (OperationKind.LiteralExpression, Type: null, Constant: null) (Syntax: 'null')
diff --git a/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IForLoopStatement.cs b/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IForLoopStatement.cs
index e53af22dc246a0cc79c6275d625ab683ce1ae6fe..365713eedc51888ba0bd41dd2ac3517791cd7327 100644
--- a/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IForLoopStatement.cs
+++ b/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IForLoopStatement.cs
@@ -35,10 +35,9 @@ static void Main()
       Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 3) (Syntax: '3')
   Locals: Local_1: System.Int32 i
   Before:
-      IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'i = 0')
-        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = 0')
-          Variables: Local_1: System.Int32 i
-          Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
+      IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = 0')
+        Variables: Local_1: System.Int32 i
+        Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
   AtLoopBottom:
       IExpressionStatement (OperationKind.ExpressionStatement) (Syntax: 'i = i + 1')
         Expression: ISimpleAssignmentExpression (OperationKind.SimpleAssignmentExpression, Type: System.Int32) (Syntax: 'i = i + 1')
@@ -420,10 +419,9 @@ static void Main(string[] args)
       Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 100) (Syntax: '100')
   Locals: Local_1: System.Int32 k
   Before:
-      IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'k = 200')
-        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'k = 200')
-          Variables: Local_1: System.Int32 k
-          Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 200) (Syntax: '200')
+      IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'k = 200')
+        Variables: Local_1: System.Int32 k
+        Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 200) (Syntax: '200')
   AtLoopBottom:
       IExpressionStatement (OperationKind.ExpressionStatement) (Syntax: 'k = k - 1')
         Expression: ISimpleAssignmentExpression (OperationKind.SimpleAssignmentExpression, Type: System.Int32) (Syntax: 'k = k - 1')
@@ -496,10 +494,9 @@ static void Main(string[] args)
       Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 100) (Syntax: '100')
   Locals: Local_1: System.Int32 i
   Before:
-      IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'i = 10')
-        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = 10')
-          Variables: Local_1: System.Int32 i
-          Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 10) (Syntax: '10')
+      IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = 10')
+        Variables: Local_1: System.Int32 i
+        Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 10) (Syntax: '10')
   AtLoopBottom:
       IExpressionStatement (OperationKind.ExpressionStatement) (Syntax: 'i = i + 1')
         Expression: ISimpleAssignmentExpression (OperationKind.SimpleAssignmentExpression, Type: System.Int32) (Syntax: 'i = i + 1')
@@ -537,10 +534,9 @@ static void Main(string[] args)
       Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 100) (Syntax: '100')
   Locals: Local_1: System.Int32 i
   Before:
-      IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'i = 0')
-        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = 0')
-          Variables: Local_1: System.Int32 i
-          Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
+      IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = 0')
+        Variables: Local_1: System.Int32 i
+        Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
   AtLoopBottom:
       IExpressionStatement (OperationKind.ExpressionStatement) (Syntax: 'i = i + 1')
         Expression: ISimpleAssignmentExpression (OperationKind.SimpleAssignmentExpression, Type: System.Int32) (Syntax: 'i = i + 1')
@@ -555,10 +551,9 @@ static void Main(string[] args)
             Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 10) (Syntax: '10')
         Locals: Local_1: System.Int32 j
         Before:
-            IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'j = 0')
-              IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'j = 0')
-                Variables: Local_1: System.Int32 j
-                Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
+            IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'j = 0')
+              Variables: Local_1: System.Int32 j
+              Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
         AtLoopBottom:
             IExpressionStatement (OperationKind.ExpressionStatement) (Syntax: 'j = j + 1')
               Expression: ISimpleAssignmentExpression (OperationKind.SimpleAssignmentExpression, Type: System.Int32) (Syntax: 'j = j + 1')
@@ -598,10 +593,9 @@ static void Main(string[] args)
       Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 10) (Syntax: '10')
   Locals: Local_1: System.Int32 i
   Before:
-      IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'i = 0')
-        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = 0')
-          Variables: Local_1: System.Int32 i
-          Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
+      IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = 0')
+        Variables: Local_1: System.Int32 i
+        Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
   AtLoopBottom:
       IExpressionStatement (OperationKind.ExpressionStatement) (Syntax: 'i = i + 1')
         Expression: ISimpleAssignmentExpression (OperationKind.SimpleAssignmentExpression, Type: System.Int32) (Syntax: 'i = i + 1')
@@ -616,10 +610,9 @@ static void Main(string[] args)
             Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 10) (Syntax: '10')
         Locals: Local_1: System.Int32 j
         Before:
-            IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'j = 0')
-              IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'j = 0')
-                Variables: Local_1: System.Int32 j
-                Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
+            IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'j = 0')
+              Variables: Local_1: System.Int32 j
+              Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
         AtLoopBottom:
             IExpressionStatement (OperationKind.ExpressionStatement) (Syntax: 'j = j + 1')
               Expression: ISimpleAssignmentExpression (OperationKind.SimpleAssignmentExpression, Type: System.Int32) (Syntax: 'j = j + 1')
@@ -662,10 +655,9 @@ static void Main(string[] args)
       Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 5) (Syntax: '5')
   Locals: Local_1: System.Int32 i
   Before:
-      IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'i = 0')
-        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = 0')
-          Variables: Local_1: System.Int32 i
-          Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
+      IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = 0')
+        Variables: Local_1: System.Int32 i
+        Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
   AtLoopBottom:
       IExpressionStatement (OperationKind.ExpressionStatement) (Syntax: 'i = i + 1')
         Expression: ISimpleAssignmentExpression (OperationKind.SimpleAssignmentExpression, Type: System.Int32) (Syntax: 'i = i + 1')
@@ -680,12 +672,11 @@ static void Main(string[] args)
             Right: ILocalReferenceExpression: j (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'j')
         Locals: Local_1: System.Int32 j
         Before:
-            IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'j = i + 1')
-              IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'j = i + 1')
-                Variables: Local_1: System.Int32 j
-                Initializer: IBinaryOperatorExpression (BinaryOperatorKind.Add) (OperationKind.BinaryOperatorExpression, Type: System.Int32) (Syntax: 'i + 1')
-                    Left: ILocalReferenceExpression: i (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'i')
-                    Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1) (Syntax: '1')
+            IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'j = i + 1')
+              Variables: Local_1: System.Int32 j
+              Initializer: IBinaryOperatorExpression (BinaryOperatorKind.Add) (OperationKind.BinaryOperatorExpression, Type: System.Int32) (Syntax: 'i + 1')
+                  Left: ILocalReferenceExpression: i (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'i')
+                  Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1) (Syntax: '1')
         AtLoopBottom:
             IExpressionStatement (OperationKind.ExpressionStatement) (Syntax: 'j = j - 1')
               Expression: ISimpleAssignmentExpression (OperationKind.SimpleAssignmentExpression, Type: System.Int32) (Syntax: 'j = j - 1')
@@ -726,10 +717,9 @@ static void Main(string[] args)
       Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 5) (Syntax: '5')
   Locals: Local_1: System.Int32 i
   Before:
-      IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'i = 0')
-        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = 0')
-          Variables: Local_1: System.Int32 i
-          Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
+      IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = 0')
+        Variables: Local_1: System.Int32 i
+        Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
   AtLoopBottom:
       IExpressionStatement (OperationKind.ExpressionStatement) (Syntax: 'i = i + 1')
         Expression: ISimpleAssignmentExpression (OperationKind.SimpleAssignmentExpression, Type: System.Int32) (Syntax: 'i = i + 1')
@@ -744,10 +734,9 @@ static void Main(string[] args)
             Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 10) (Syntax: '10')
         Locals: Local_1: System.Int32 j
         Before:
-            IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'j = 0')
-              IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'j = 0')
-                Variables: Local_1: System.Int32 j
-                Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
+            IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'j = 0')
+              Variables: Local_1: System.Int32 j
+              Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
         AtLoopBottom:
             IExpressionStatement (OperationKind.ExpressionStatement) (Syntax: 'j = j + 1')
               Expression: ISimpleAssignmentExpression (OperationKind.SimpleAssignmentExpression, Type: System.Int32) (Syntax: 'j = j + 1')
@@ -795,10 +784,9 @@ static void Main(string[] args)
       Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 5) (Syntax: '5')
   Locals: Local_1: System.Int32 i
   Before:
-      IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'i = 0')
-        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = 0')
-          Variables: Local_1: System.Int32 i
-          Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
+      IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = 0')
+        Variables: Local_1: System.Int32 i
+        Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
   AtLoopBottom:
       IExpressionStatement (OperationKind.ExpressionStatement) (Syntax: 'i = i + 1')
         Expression: ISimpleAssignmentExpression (OperationKind.SimpleAssignmentExpression, Type: System.Int32) (Syntax: 'i = i + 1')
@@ -813,10 +801,9 @@ static void Main(string[] args)
             Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 10) (Syntax: '10')
         Locals: Local_1: System.Int32 j
         Before:
-            IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'j = 1')
-              IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'j = 1')
-                Variables: Local_1: System.Int32 j
-                Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1) (Syntax: '1')
+            IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'j = 1')
+              Variables: Local_1: System.Int32 j
+              Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1) (Syntax: '1')
         AtLoopBottom:
             IExpressionStatement (OperationKind.ExpressionStatement) (Syntax: 'j = j + 1')
               Expression: ISimpleAssignmentExpression (OperationKind.SimpleAssignmentExpression, Type: System.Int32) (Syntax: 'j = j + 1')
@@ -880,10 +867,9 @@ static void Main(string[] args)
       Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 5) (Syntax: '5')
   Locals: Local_1: System.Int32 i
   Before:
-      IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'i = 0')
-        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = 0')
-          Variables: Local_1: System.Int32 i
-          Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
+      IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = 0')
+        Variables: Local_1: System.Int32 i
+        Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
   AtLoopBottom:
       IExpressionStatement (OperationKind.ExpressionStatement) (Syntax: 'i = i + 1')
         Expression: ISimpleAssignmentExpression (OperationKind.SimpleAssignmentExpression, Type: System.Int32) (Syntax: 'i = i + 1')
@@ -898,10 +884,9 @@ static void Main(string[] args)
             Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 10) (Syntax: '10')
         Locals: Local_1: System.Int32 j
         Before:
-            IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'j = 0')
-              IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'j = 0')
-                Variables: Local_1: System.Int32 j
-                Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
+            IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'j = 0')
+              Variables: Local_1: System.Int32 j
+              Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
         AtLoopBottom:
             IExpressionStatement (OperationKind.ExpressionStatement) (Syntax: 'j = j + 1')
               Expression: ISimpleAssignmentExpression (OperationKind.SimpleAssignmentExpression, Type: System.Int32) (Syntax: 'j = j + 1')
@@ -949,10 +934,9 @@ static void Main(string[] args)
       Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 10) (Syntax: '10')
   Locals: Local_1: System.Int32 i
   Before:
-      IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'i = 0')
-        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = 0')
-          Variables: Local_1: System.Int32 i
-          Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
+      IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = 0')
+        Variables: Local_1: System.Int32 i
+        Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
   AtLoopBottom:
       IExpressionStatement (OperationKind.ExpressionStatement) (Syntax: 'i = i + 1')
         Expression: ISimpleAssignmentExpression (OperationKind.SimpleAssignmentExpression, Type: System.Int32) (Syntax: 'i = i + 1')
@@ -967,10 +951,9 @@ static void Main(string[] args)
             Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 10) (Syntax: '10')
         Locals: Local_1: System.Int32 j
         Before:
-            IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'j = 0')
-              IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'j = 0')
-                Variables: Local_1: System.Int32 j
-                Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
+            IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'j = 0')
+              Variables: Local_1: System.Int32 j
+              Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
         AtLoopBottom(0)
         Body: IBlockStatement (1 statements) (OperationKind.BlockStatement) (Syntax: '{ ... }')
             IExpressionStatement (OperationKind.ExpressionStatement) (Syntax: 'throw new S ... xception();')
@@ -1009,10 +992,9 @@ static void Main(string[] args)
       Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 10) (Syntax: '10')
   Locals: Local_1: System.Int32 i
   Before:
-      IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'i = 0')
-        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = 0')
-          Variables: Local_1: System.Int32 i
-          Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
+      IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = 0')
+        Variables: Local_1: System.Int32 i
+        Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
   AtLoopBottom(0)
   Body: IBlockStatement (1 statements) (OperationKind.BlockStatement) (Syntax: '{ ... }')
       IForLoopStatement (LoopKind.For) (OperationKind.LoopStatement) (Syntax: 'for (int j  ... }')
@@ -1021,10 +1003,9 @@ static void Main(string[] args)
             Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 5) (Syntax: '5')
         Locals: Local_1: System.Int32 j
         Before:
-            IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'j = 0')
-              IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'j = 0')
-                Variables: Local_1: System.Int32 j
-                Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
+            IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'j = 0')
+              Variables: Local_1: System.Int32 j
+              Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
         AtLoopBottom(0)
         Body: IBlockStatement (1 statements) (OperationKind.BlockStatement) (Syntax: '{ ... }')
             IReturnStatement (OperationKind.ReturnStatement) (Syntax: 'return;')
@@ -1109,10 +1090,9 @@ static void Main(string[] args)
           Right: ILocalReferenceExpression: x (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'x')
   Locals: Local_1: System.Int32 i
   Before:
-      IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'i = 0')
-        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = 0')
-          Variables: Local_1: System.Int32 i
-          Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
+      IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = 0')
+        Variables: Local_1: System.Int32 i
+        Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
   AtLoopBottom:
       IExpressionStatement (OperationKind.ExpressionStatement) (Syntax: 'i = i + 1')
         Expression: ISimpleAssignmentExpression (OperationKind.SimpleAssignmentExpression, Type: System.Int32) (Syntax: 'i = i + 1')
@@ -1200,21 +1180,20 @@ public class F
       Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 5) (Syntax: '5')
   Locals: Local_1: F f
   Before:
-      IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'f = new F { ... s = ""abc"" }')
-        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'f = new F { ... s = ""abc"" }')
-          Variables: Local_1: F f
-          Initializer: IObjectCreationExpression (Constructor: F..ctor()) (OperationKind.ObjectCreationExpression, Type: F) (Syntax: 'new F { i = ... s = ""abc"" }')
-              Arguments(0)
-              Initializer: IObjectOrCollectionInitializerExpression (OperationKind.ObjectOrCollectionInitializerExpression, Type: F) (Syntax: '{ i = 0, s = ""abc"" }')
-                  Initializers(2):
-                      ISimpleAssignmentExpression (OperationKind.SimpleAssignmentExpression, Type: System.Int32) (Syntax: 'i = 0')
-                        Left: IFieldReferenceExpression: System.Int32 F.i (OperationKind.FieldReferenceExpression, Type: System.Int32) (Syntax: 'i')
-                            Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: F) (Syntax: 'i')
-                        Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
-                      ISimpleAssignmentExpression (OperationKind.SimpleAssignmentExpression, Type: System.String) (Syntax: 's = ""abc""')
-                        Left: IFieldReferenceExpression: System.String F.s (OperationKind.FieldReferenceExpression, Type: System.String) (Syntax: 's')
-                            Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: F) (Syntax: 's')
-                        Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: ""abc"") (Syntax: '""abc""')
+      IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'f = new F { ... s = ""abc"" }')
+        Variables: Local_1: F f
+        Initializer: IObjectCreationExpression (Constructor: F..ctor()) (OperationKind.ObjectCreationExpression, Type: F) (Syntax: 'new F { i = ... s = ""abc"" }')
+            Arguments(0)
+            Initializer: IObjectOrCollectionInitializerExpression (OperationKind.ObjectOrCollectionInitializerExpression, Type: F) (Syntax: '{ i = 0, s = ""abc"" }')
+                Initializers(2):
+                    ISimpleAssignmentExpression (OperationKind.SimpleAssignmentExpression, Type: System.Int32) (Syntax: 'i = 0')
+                      Left: IFieldReferenceExpression: System.Int32 F.i (OperationKind.FieldReferenceExpression, Type: System.Int32) (Syntax: 'i')
+                          Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: F) (Syntax: 'i')
+                      Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
+                    ISimpleAssignmentExpression (OperationKind.SimpleAssignmentExpression, Type: System.String) (Syntax: 's = ""abc""')
+                      Left: IFieldReferenceExpression: System.String F.s (OperationKind.FieldReferenceExpression, Type: System.String) (Syntax: 's')
+                          Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: F) (Syntax: 's')
+                      Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: ""abc"") (Syntax: '""abc""')
   AtLoopBottom:
       IExpressionStatement (OperationKind.ExpressionStatement) (Syntax: 'f.i = f.i + 1')
         Expression: ISimpleAssignmentExpression (OperationKind.SimpleAssignmentExpression, Type: System.Int32) (Syntax: 'f.i = f.i + 1')
@@ -1318,10 +1297,9 @@ static void Main(string[] args)
       Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 5) (Syntax: '5')
   Locals: Local_1: System.Int32 i
   Before:
-      IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'i = 1')
-        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = 1')
-          Variables: Local_1: System.Int32 i
-          Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1) (Syntax: '1')
+      IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = 1')
+        Variables: Local_1: System.Int32 i
+        Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1) (Syntax: '1')
   AtLoopBottom:
       IExpressionStatement (OperationKind.ExpressionStatement) (Syntax: 'i = i + 1')
         Expression: ISimpleAssignmentExpression (OperationKind.SimpleAssignmentExpression, Type: System.Int32) (Syntax: 'i = i + 1')
@@ -1364,83 +1342,82 @@ static void Main(string[] args)
   Condition: null
   Locals: Local_1: System.Collections.Generic.IEnumerable<System.String> str
   Before:
-      IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'str = from  ... select w')
-        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'str = from  ... select w')
-          Variables: Local_1: System.Collections.Generic.IEnumerable<System.String> str
-          Initializer: IOperation:  (OperationKind.None) (Syntax: 'from x in "" ... select w')
-              Children(1):
-                  IOperation:  (OperationKind.None) (Syntax: 'into w ... select w')
-                    Children(1):
-                        IOperation:  (OperationKind.None) (Syntax: 'select w')
-                          Children(1):
-                              IOperation:  (OperationKind.None) (Syntax: 'select w')
-                                Children(1):
-                                    IInvocationExpression (System.Collections.Generic.IEnumerable<System.String> System.Linq.Enumerable.Select<System.String, System.String>(this System.Collections.Generic.IEnumerable<System.String> source, System.Func<System.String, System.String> selector)) (OperationKind.InvocationExpression, Type: System.Collections.Generic.IEnumerable<System.String>) (Syntax: 'select w')
-                                      Instance Receiver: null
-                                      Arguments(2):
-                                          IArgument (ArgumentKind.Explicit, Matching Parameter: source) (OperationKind.Argument) (Syntax: 'select z')
-                                            IOperation:  (OperationKind.None) (Syntax: 'select z')
-                                              Children(1):
-                                                  IInvocationExpression (System.Collections.Generic.IEnumerable<System.String> System.Linq.Enumerable.Select<<anonymous type: System.Char x, System.String z>, System.String>(this System.Collections.Generic.IEnumerable<<anonymous type: System.Char x, System.String z>> source, System.Func<<anonymous type: System.Char x, System.String z>, System.String> selector)) (OperationKind.InvocationExpression, Type: System.Collections.Generic.IEnumerable<System.String>) (Syntax: 'select z')
-                                                    Instance Receiver: null
-                                                    Arguments(2):
-                                                        IArgument (ArgumentKind.Explicit, Matching Parameter: source) (OperationKind.Argument) (Syntax: 'let z = x.ToString()')
-                                                          IOperation:  (OperationKind.None) (Syntax: 'let z = x.ToString()')
-                                                            Children(1):
-                                                                IInvocationExpression (System.Collections.Generic.IEnumerable<<anonymous type: System.Char x, System.String z>> System.Linq.Enumerable.Select<System.Char, <anonymous type: System.Char x, System.String z>>(this System.Collections.Generic.IEnumerable<System.Char> source, System.Func<System.Char, <anonymous type: System.Char x, System.String z>> selector)) (OperationKind.InvocationExpression, Type: System.Collections.Generic.IEnumerable<<anonymous type: System.Char x, System.String z>>) (Syntax: 'let z = x.ToString()')
-                                                                  Instance Receiver: null
-                                                                  Arguments(2):
-                                                                      IArgument (ArgumentKind.Explicit, Matching Parameter: source) (OperationKind.Argument) (Syntax: 'from x in ""123""')
-                                                                        IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Collections.Generic.IEnumerable<System.Char>) (Syntax: 'from x in ""123""')
-                                                                          Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-                                                                          Operand: IOperation:  (OperationKind.None) (Syntax: 'from x in ""123""')
-                                                                              Children(1):
-                                                                                  ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: ""123"") (Syntax: '""123""')
-                                                                        InConversion: null
-                                                                        OutConversion: null
-                                                                      IArgument (ArgumentKind.Explicit, Matching Parameter: selector) (OperationKind.Argument) (Syntax: 'x.ToString()')
-                                                                        IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Func<System.Char, <anonymous type: System.Char x, System.String z>>) (Syntax: 'x.ToString()')
-                                                                          Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-                                                                          Operand: IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null) (Syntax: 'x.ToString()')
-                                                                              IBlockStatement (1 statements) (OperationKind.BlockStatement) (Syntax: 'x.ToString()')
-                                                                                IReturnStatement (OperationKind.ReturnStatement) (Syntax: 'x.ToString()')
-                                                                                  ReturnedValue: IObjectCreationExpression (Constructor: <anonymous type: System.Char x, System.String z>..ctor(System.Char x, System.String z)) (OperationKind.ObjectCreationExpression, Type: <anonymous type: System.Char x, System.String z>) (Syntax: 'let z = x.ToString()')
-                                                                                      Arguments(2):
-                                                                                          IArgument (ArgumentKind.Explicit, Matching Parameter: x) (OperationKind.Argument) (Syntax: 'let z = x.ToString()')
-                                                                                            IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Char) (Syntax: 'let z = x.ToString()')
-                                                                                            InConversion: null
-                                                                                            OutConversion: null
-                                                                                          IArgument (ArgumentKind.Explicit, Matching Parameter: z) (OperationKind.Argument) (Syntax: 'x.ToString()')
-                                                                                            IInvocationExpression (virtual System.String System.Char.ToString()) (OperationKind.InvocationExpression, Type: System.String) (Syntax: 'x.ToString()')
-                                                                                              Instance Receiver: IOperation:  (OperationKind.None) (Syntax: 'x')
-                                                                                              Arguments(0)
-                                                                                            InConversion: null
-                                                                                            OutConversion: null
-                                                                                      Initializer: null
-                                                                        InConversion: null
-                                                                        OutConversion: null
-                                                          InConversion: null
-                                                          OutConversion: null
-                                                        IArgument (ArgumentKind.Explicit, Matching Parameter: selector) (OperationKind.Argument) (Syntax: 'z')
-                                                          IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Func<<anonymous type: System.Char x, System.String z>, System.String>) (Syntax: 'z')
-                                                            Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-                                                            Operand: IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null) (Syntax: 'z')
-                                                                IBlockStatement (1 statements) (OperationKind.BlockStatement) (Syntax: 'z')
-                                                                  IReturnStatement (OperationKind.ReturnStatement) (Syntax: 'z')
-                                                                    ReturnedValue: IOperation:  (OperationKind.None) (Syntax: 'z')
-                                                          InConversion: null
-                                                          OutConversion: null
-                                            InConversion: null
-                                            OutConversion: null
-                                          IArgument (ArgumentKind.Explicit, Matching Parameter: selector) (OperationKind.Argument) (Syntax: 'w')
-                                            IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Func<System.String, System.String>) (Syntax: 'w')
-                                              Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-                                              Operand: IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null) (Syntax: 'w')
-                                                  IBlockStatement (1 statements) (OperationKind.BlockStatement) (Syntax: 'w')
-                                                    IReturnStatement (OperationKind.ReturnStatement) (Syntax: 'w')
-                                                      ReturnedValue: IOperation:  (OperationKind.None) (Syntax: 'w')
-                                            InConversion: null
-                                            OutConversion: null
+      IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'str = from  ... select w')
+        Variables: Local_1: System.Collections.Generic.IEnumerable<System.String> str
+        Initializer: IOperation:  (OperationKind.None) (Syntax: 'from x in "" ... select w')
+            Children(1):
+                IOperation:  (OperationKind.None) (Syntax: 'into w ... select w')
+                  Children(1):
+                      IOperation:  (OperationKind.None) (Syntax: 'select w')
+                        Children(1):
+                            IOperation:  (OperationKind.None) (Syntax: 'select w')
+                              Children(1):
+                                  IInvocationExpression (System.Collections.Generic.IEnumerable<System.String> System.Linq.Enumerable.Select<System.String, System.String>(this System.Collections.Generic.IEnumerable<System.String> source, System.Func<System.String, System.String> selector)) (OperationKind.InvocationExpression, Type: System.Collections.Generic.IEnumerable<System.String>) (Syntax: 'select w')
+                                    Instance Receiver: null
+                                    Arguments(2):
+                                        IArgument (ArgumentKind.Explicit, Matching Parameter: source) (OperationKind.Argument) (Syntax: 'select z')
+                                          IOperation:  (OperationKind.None) (Syntax: 'select z')
+                                            Children(1):
+                                                IInvocationExpression (System.Collections.Generic.IEnumerable<System.String> System.Linq.Enumerable.Select<<anonymous type: System.Char x, System.String z>, System.String>(this System.Collections.Generic.IEnumerable<<anonymous type: System.Char x, System.String z>> source, System.Func<<anonymous type: System.Char x, System.String z>, System.String> selector)) (OperationKind.InvocationExpression, Type: System.Collections.Generic.IEnumerable<System.String>) (Syntax: 'select z')
+                                                  Instance Receiver: null
+                                                  Arguments(2):
+                                                      IArgument (ArgumentKind.Explicit, Matching Parameter: source) (OperationKind.Argument) (Syntax: 'let z = x.ToString()')
+                                                        IOperation:  (OperationKind.None) (Syntax: 'let z = x.ToString()')
+                                                          Children(1):
+                                                              IInvocationExpression (System.Collections.Generic.IEnumerable<<anonymous type: System.Char x, System.String z>> System.Linq.Enumerable.Select<System.Char, <anonymous type: System.Char x, System.String z>>(this System.Collections.Generic.IEnumerable<System.Char> source, System.Func<System.Char, <anonymous type: System.Char x, System.String z>> selector)) (OperationKind.InvocationExpression, Type: System.Collections.Generic.IEnumerable<<anonymous type: System.Char x, System.String z>>) (Syntax: 'let z = x.ToString()')
+                                                                Instance Receiver: null
+                                                                Arguments(2):
+                                                                    IArgument (ArgumentKind.Explicit, Matching Parameter: source) (OperationKind.Argument) (Syntax: 'from x in ""123""')
+                                                                      IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Collections.Generic.IEnumerable<System.Char>) (Syntax: 'from x in ""123""')
+                                                                        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+                                                                        Operand: IOperation:  (OperationKind.None) (Syntax: 'from x in ""123""')
+                                                                            Children(1):
+                                                                                ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: ""123"") (Syntax: '""123""')
+                                                                      InConversion: null
+                                                                      OutConversion: null
+                                                                    IArgument (ArgumentKind.Explicit, Matching Parameter: selector) (OperationKind.Argument) (Syntax: 'x.ToString()')
+                                                                      IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Func<System.Char, <anonymous type: System.Char x, System.String z>>) (Syntax: 'x.ToString()')
+                                                                        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+                                                                        Operand: IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null) (Syntax: 'x.ToString()')
+                                                                            IBlockStatement (1 statements) (OperationKind.BlockStatement) (Syntax: 'x.ToString()')
+                                                                              IReturnStatement (OperationKind.ReturnStatement) (Syntax: 'x.ToString()')
+                                                                                ReturnedValue: IObjectCreationExpression (Constructor: <anonymous type: System.Char x, System.String z>..ctor(System.Char x, System.String z)) (OperationKind.ObjectCreationExpression, Type: <anonymous type: System.Char x, System.String z>) (Syntax: 'let z = x.ToString()')
+                                                                                    Arguments(2):
+                                                                                        IArgument (ArgumentKind.Explicit, Matching Parameter: x) (OperationKind.Argument) (Syntax: 'let z = x.ToString()')
+                                                                                          IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Char) (Syntax: 'let z = x.ToString()')
+                                                                                          InConversion: null
+                                                                                          OutConversion: null
+                                                                                        IArgument (ArgumentKind.Explicit, Matching Parameter: z) (OperationKind.Argument) (Syntax: 'x.ToString()')
+                                                                                          IInvocationExpression (virtual System.String System.Char.ToString()) (OperationKind.InvocationExpression, Type: System.String) (Syntax: 'x.ToString()')
+                                                                                            Instance Receiver: IOperation:  (OperationKind.None) (Syntax: 'x')
+                                                                                            Arguments(0)
+                                                                                          InConversion: null
+                                                                                          OutConversion: null
+                                                                                    Initializer: null
+                                                                      InConversion: null
+                                                                      OutConversion: null
+                                                        InConversion: null
+                                                        OutConversion: null
+                                                      IArgument (ArgumentKind.Explicit, Matching Parameter: selector) (OperationKind.Argument) (Syntax: 'z')
+                                                        IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Func<<anonymous type: System.Char x, System.String z>, System.String>) (Syntax: 'z')
+                                                          Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+                                                          Operand: IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null) (Syntax: 'z')
+                                                              IBlockStatement (1 statements) (OperationKind.BlockStatement) (Syntax: 'z')
+                                                                IReturnStatement (OperationKind.ReturnStatement) (Syntax: 'z')
+                                                                  ReturnedValue: IOperation:  (OperationKind.None) (Syntax: 'z')
+                                                        InConversion: null
+                                                        OutConversion: null
+                                          InConversion: null
+                                          OutConversion: null
+                                        IArgument (ArgumentKind.Explicit, Matching Parameter: selector) (OperationKind.Argument) (Syntax: 'w')
+                                          IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Func<System.String, System.String>) (Syntax: 'w')
+                                            Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+                                            Operand: IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null) (Syntax: 'w')
+                                                IBlockStatement (1 statements) (OperationKind.BlockStatement) (Syntax: 'w')
+                                                  IReturnStatement (OperationKind.ReturnStatement) (Syntax: 'w')
+                                                    ReturnedValue: IOperation:  (OperationKind.None) (Syntax: 'w')
+                                          InConversion: null
+                                          OutConversion: null
   AtLoopBottom(0)
   Body: IBlockStatement (2 statements) (OperationKind.BlockStatement) (Syntax: '{ ... }')
       IForEachLoopStatement (Iteration variable: System.String item) (LoopKind.ForEach) (OperationKind.LoopStatement) (Syntax: 'foreach (va ... }')
@@ -1500,10 +1477,9 @@ private static IEnumerable<string> fun()
       Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 5) (Syntax: '5')
   Locals: Local_1: System.Int32 i
   Before:
-      IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'i = 0')
-        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = 0')
-          Variables: Local_1: System.Int32 i
-          Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
+      IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = 0')
+        Variables: Local_1: System.Int32 i
+        Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
   AtLoopBottom(0)
   Body: IBlockStatement (1 statements) (OperationKind.BlockStatement) (Syntax: '{ ... }')
       IReturnStatement (OperationKind.ReturnStatement) (Syntax: 'return from ... select w;')
@@ -1629,7 +1605,7 @@ static void Main(string[] args)
   Body: IBlockStatement (2 statements, 1 locals) (OperationKind.BlockStatement) (Syntax: '{ ... }')
       Locals: Local_1: System.Func<System.Int32, System.Int32> lambda
       IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'var lambda  ... .Compile();')
-        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'var lambda  ... .Compile();')
+        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'lambda = e.Compile()')
           Variables: Local_1: System.Func<System.Int32, System.Int32> lambda
           Initializer: IInvocationExpression ( System.Func<System.Int32, System.Int32> System.Linq.Expressions.Expression<System.Func<System.Int32, System.Int32>>.Compile()) (OperationKind.InvocationExpression, Type: System.Func<System.Int32, System.Int32>) (Syntax: 'e.Compile()')
               Instance Receiver: ILocalReferenceExpression: e (OperationKind.LocalReferenceExpression, Type: System.Linq.Expressions.Expression<System.Func<System.Int32, System.Int32>>) (Syntax: 'e')
@@ -1678,10 +1654,9 @@ static void Main(string[] args)
       Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 5) (Syntax: '5')
   Locals: Local_1: System.Int32 i
   Before:
-      IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'i = 1')
-        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = 1')
-          Variables: Local_1: System.Int32 i
-          Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1) (Syntax: '1')
+      IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = 1')
+        Variables: Local_1: System.Int32 i
+        Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1) (Syntax: '1')
   AtLoopBottom:
       IExpressionStatement (OperationKind.ExpressionStatement) (Syntax: 'e = x => x * x')
         Expression: ISimpleAssignmentExpression (OperationKind.SimpleAssignmentExpression, Type: System.Linq.Expressions.Expression<System.Func<System.Int32, System.Int32>>) (Syntax: 'e = x => x * x')
@@ -1703,7 +1678,7 @@ static void Main(string[] args)
   Body: IBlockStatement (2 statements, 1 locals) (OperationKind.BlockStatement) (Syntax: '{ ... }')
       Locals: Local_1: System.Func<System.Int32, System.Int32> lambda
       IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'var lambda  ... .Compile();')
-        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'var lambda  ... .Compile();')
+        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'lambda = e.Compile()')
           Variables: Local_1: System.Func<System.Int32, System.Int32> lambda
           Initializer: IInvocationExpression ( System.Func<System.Int32, System.Int32> System.Linq.Expressions.Expression<System.Func<System.Int32, System.Int32>>.Compile()) (OperationKind.InvocationExpression, Type: System.Func<System.Int32, System.Int32>) (Syntax: 'e.Compile()')
               Instance Receiver: ILocalReferenceExpression: e (OperationKind.LocalReferenceExpression, Type: System.Linq.Expressions.Expression<System.Func<System.Int32, System.Int32>>) (Syntax: 'e')
@@ -1757,12 +1732,11 @@ public class C1
           Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: null, Constant: null) (Syntax: 'null')
   Locals: Local_1: C1 i
   Before:
-      IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'i = new C1()')
-        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = new C1()')
-          Variables: Local_1: C1 i
-          Initializer: IObjectCreationExpression (Constructor: C1..ctor()) (OperationKind.ObjectCreationExpression, Type: C1) (Syntax: 'new C1()')
-              Arguments(0)
-              Initializer: null
+      IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = new C1()')
+        Variables: Local_1: C1 i
+        Initializer: IObjectCreationExpression (Constructor: C1..ctor()) (OperationKind.ObjectCreationExpression, Type: C1) (Syntax: 'new C1()')
+            Arguments(0)
+            Initializer: null
   AtLoopBottom:
       IExpressionStatement (OperationKind.ExpressionStatement) (Syntax: 'i++')
         Expression: IIncrementExpression (PostfixIncrement) (OperatorMethod: C1 C1.op_Increment(C1 obj)) (OperationKind.IncrementExpression, Type: C1) (Syntax: 'i++')
@@ -1796,11 +1770,10 @@ static void Main(string[] args)
       Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 5) (Syntax: '5')
   Locals: Local_1: System.Int32 j
   Before:
-      IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'j = i++')
-        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'j = i++')
-          Variables: Local_1: System.Int32 j
-          Initializer: IIncrementExpression (PostfixIncrement) (OperationKind.IncrementExpression, Type: System.Int32) (Syntax: 'i++')
-              Target: ILocalReferenceExpression: i (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'i')
+      IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'j = i++')
+        Variables: Local_1: System.Int32 j
+        Initializer: IIncrementExpression (PostfixIncrement) (OperationKind.IncrementExpression, Type: System.Int32) (Syntax: 'i++')
+            Target: ILocalReferenceExpression: i (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'i')
   AtLoopBottom:
       IExpressionStatement (OperationKind.ExpressionStatement) (Syntax: '++j')
         Expression: IIncrementExpression (PrefixIncrement) (OperationKind.IncrementExpression, Type: System.Int32) (Syntax: '++j')
@@ -1843,11 +1816,10 @@ static void Main(string[] args)
       Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 5) (Syntax: '5')
   Locals: Local_1: System.Int32 j
   Before:
-      IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'j = ++i')
-        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'j = ++i')
-          Variables: Local_1: System.Int32 j
-          Initializer: IIncrementExpression (PrefixIncrement) (OperationKind.IncrementExpression, Type: System.Int32) (Syntax: '++i')
-              Target: ILocalReferenceExpression: i (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'i')
+      IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'j = ++i')
+        Variables: Local_1: System.Int32 j
+        Initializer: IIncrementExpression (PrefixIncrement) (OperationKind.IncrementExpression, Type: System.Int32) (Syntax: '++i')
+            Target: ILocalReferenceExpression: i (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'i')
   AtLoopBottom:
       IExpressionStatement (OperationKind.ExpressionStatement) (Syntax: '++j')
         Expression: IIncrementExpression (PrefixIncrement) (OperationKind.IncrementExpression, Type: System.Int32) (Syntax: '++j')
@@ -1889,10 +1861,9 @@ static void Main(string[] args)
       Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 5) (Syntax: '5')
   Locals: Local_1: System.Int32 i
   Before:
-      IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'i = 0')
-        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = 0')
-          Variables: Local_1: System.Int32 i
-          Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
+      IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = 0')
+        Variables: Local_1: System.Int32 i
+        Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
   AtLoopBottom(0)
   Body: IBlockStatement (1 statements) (OperationKind.BlockStatement) (Syntax: '{ ... }')
       IExpressionStatement (OperationKind.ExpressionStatement) (Syntax: 'System.Cons ... iteLine(i);')
@@ -1943,10 +1914,9 @@ static int foo(int x)
           Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 5) (Syntax: '5')
   Locals: Local_1: System.Int32 i
   Before:
-      IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'i = 0')
-        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = 0')
-          Variables: Local_1: System.Int32 i
-          Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
+      IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = 0')
+        Variables: Local_1: System.Int32 i
+        Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
   AtLoopBottom(0)
   Body: IBlockStatement (1 statements) (OperationKind.BlockStatement) (Syntax: '{ ... }')
       IExpressionStatement (OperationKind.ExpressionStatement) (Syntax: 'System.Cons ... iteLine(i);')
@@ -2063,23 +2033,22 @@ private void M()
   Locals: Local_1: System.Int32 j
     Local_2: System.Int32 i
   Before:
-      IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'j = int.Try ...  i) ? i : 0')
-        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'j = int.Try ...  i) ? i : 0')
-          Variables: Local_1: System.Int32 j
-          Initializer: IConditionalExpression (OperationKind.ConditionalExpression, Type: System.Int32) (Syntax: 'int.TryPars ...  i) ? i : 0')
-              Condition: IInvocationExpression (System.Boolean System.Int32.TryParse(System.String s, out System.Int32 result)) (OperationKind.InvocationExpression, Type: System.Boolean) (Syntax: 'int.TryPars ...  out var i)')
-                  Instance Receiver: null
-                  Arguments(2):
-                      IArgument (ArgumentKind.Explicit, Matching Parameter: s) (OperationKind.Argument) (Syntax: 's')
-                        ILocalReferenceExpression: s (OperationKind.LocalReferenceExpression, Type: System.String) (Syntax: 's')
-                        InConversion: null
-                        OutConversion: null
-                      IArgument (ArgumentKind.Explicit, Matching Parameter: result) (OperationKind.Argument) (Syntax: 'var i')
-                        ILocalReferenceExpression: i (IsDeclaration: True) (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'var i')
-                        InConversion: null
-                        OutConversion: null
-              WhenTrue: ILocalReferenceExpression: i (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'i')
-              WhenFalse: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
+      IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'j = int.Try ...  i) ? i : 0')
+        Variables: Local_1: System.Int32 j
+        Initializer: IConditionalExpression (OperationKind.ConditionalExpression, Type: System.Int32) (Syntax: 'int.TryPars ...  i) ? i : 0')
+            Condition: IInvocationExpression (System.Boolean System.Int32.TryParse(System.String s, out System.Int32 result)) (OperationKind.InvocationExpression, Type: System.Boolean) (Syntax: 'int.TryPars ...  out var i)')
+                Instance Receiver: null
+                Arguments(2):
+                    IArgument (ArgumentKind.Explicit, Matching Parameter: s) (OperationKind.Argument) (Syntax: 's')
+                      ILocalReferenceExpression: s (OperationKind.LocalReferenceExpression, Type: System.String) (Syntax: 's')
+                      InConversion: null
+                      OutConversion: null
+                    IArgument (ArgumentKind.Explicit, Matching Parameter: result) (OperationKind.Argument) (Syntax: 'var i')
+                      ILocalReferenceExpression: i (IsDeclaration: True) (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'var i')
+                      InConversion: null
+                      OutConversion: null
+            WhenTrue: ILocalReferenceExpression: i (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'i')
+            WhenFalse: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
   AtLoopBottom:
       IExpressionStatement (OperationKind.ExpressionStatement) (Syntax: 'i++')
         Expression: IIncrementExpression (PostfixIncrement) (OperationKind.IncrementExpression, Type: System.Int32) (Syntax: 'i++')
diff --git a/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IInterpolatedStringExpression.cs b/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IInterpolatedStringExpression.cs
index 6e4021ef545484e6a0724b9b23d9fc65fa3de500..4101a9934257d49decb1881db7dccd216a2e2766 100644
--- a/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IInterpolatedStringExpression.cs
+++ b/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IInterpolatedStringExpression.cs
@@ -25,8 +25,11 @@ public void M()
 }
 ";
             string expectedOperationTree = @"
-IInterpolatedStringExpression (OperationKind.InterpolatedStringExpression, Type: System.String) (Syntax: '$""""')
-  Parts(0)
+IArgument (ArgumentKind.Explicit, Matching Parameter: value) (OperationKind.Argument) (Syntax: '$""""')
+  IInterpolatedStringExpression (OperationKind.InterpolatedStringExpression, Type: System.String) (Syntax: '$""""')
+    Parts(0)
+  InConversion: null
+  OutConversion: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -49,10 +52,13 @@ public void M()
 }
 ";
             string expectedOperationTree = @"
-IInterpolatedStringExpression (OperationKind.InterpolatedStringExpression, Type: System.String) (Syntax: '$""Only text part""')
-  Parts(1):
-      IInterpolatedStringText (OperationKind.InterpolatedStringText) (Syntax: 'Only text part')
-        Text: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: ""Only text part"") (Syntax: 'Only text part')
+IArgument (ArgumentKind.Explicit, Matching Parameter: value) (OperationKind.Argument) (Syntax: '$""Only text part""')
+  IInterpolatedStringExpression (OperationKind.InterpolatedStringExpression, Type: System.String) (Syntax: '$""Only text part""')
+    Parts(1):
+        IInterpolatedStringText (OperationKind.InterpolatedStringText) (Syntax: 'Only text part')
+          Text: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: ""Only text part"") (Syntax: 'Only text part')
+  InConversion: null
+  OutConversion: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -75,12 +81,15 @@ public void M()
 }
 ";
             string expectedOperationTree = @"
-IInterpolatedStringExpression (OperationKind.InterpolatedStringExpression, Type: System.String) (Syntax: '$""{1}""')
-  Parts(1):
-      IInterpolation (OperationKind.Interpolation) (Syntax: '{1}')
-        Expression: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1) (Syntax: '1')
-        Alignment: null
-        FormatString: null
+IArgument (ArgumentKind.Explicit, Matching Parameter: value) (OperationKind.Argument) (Syntax: '$""{1}""')
+  IInterpolatedStringExpression (OperationKind.InterpolatedStringExpression, Type: System.String) (Syntax: '$""{1}""')
+    Parts(1):
+        IInterpolation (OperationKind.Interpolation) (Syntax: '{1}')
+          Expression: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1) (Syntax: '1')
+          Alignment: null
+          FormatString: null
+  InConversion: null
+  OutConversion: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -103,13 +112,16 @@ public void M()
 }
 ";
             string expectedOperationTree = @"
-IInterpolatedStringExpression (OperationKind.InterpolatedStringExpression, Type: System.String, IsInvalid) (Syntax: '$""{}""')
-  Parts(1):
-      IInterpolation (OperationKind.Interpolation, IsInvalid) (Syntax: '{}')
-        Expression: IInvalidExpression (OperationKind.InvalidExpression, Type: null, IsInvalid) (Syntax: '')
-            Children(0)
-        Alignment: null
-        FormatString: null
+IArgument (ArgumentKind.Explicit, Matching Parameter: null) (OperationKind.Argument, IsInvalid) (Syntax: '$""{}""')
+  IInterpolatedStringExpression (OperationKind.InterpolatedStringExpression, Type: System.String, IsInvalid) (Syntax: '$""{}""')
+    Parts(1):
+        IInterpolation (OperationKind.Interpolation, IsInvalid) (Syntax: '{}')
+          Expression: IInvalidExpression (OperationKind.InvalidExpression, Type: null, IsInvalid) (Syntax: '')
+              Children(0)
+          Alignment: null
+          FormatString: null
+  InConversion: null
+  OutConversion: null
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS1733: Expected expression
@@ -136,20 +148,23 @@ public void M(int x)
 }
 ";
             string expectedOperationTree = @"
-IInterpolatedStringExpression (OperationKind.InterpolatedStringExpression, Type: System.String) (Syntax: '$""String {x ... nstant {1}""')
-  Parts(4):
-      IInterpolatedStringText (OperationKind.InterpolatedStringText) (Syntax: 'String ')
-        Text: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: ""String "") (Syntax: 'String ')
-      IInterpolation (OperationKind.Interpolation) (Syntax: '{x}')
-        Expression: IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Int32) (Syntax: 'x')
-        Alignment: null
-        FormatString: null
-      IInterpolatedStringText (OperationKind.InterpolatedStringText) (Syntax: ' and constant ')
-        Text: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: "" and constant "") (Syntax: ' and constant ')
-      IInterpolation (OperationKind.Interpolation) (Syntax: '{1}')
-        Expression: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1) (Syntax: '1')
-        Alignment: null
-        FormatString: null
+IArgument (ArgumentKind.Explicit, Matching Parameter: value) (OperationKind.Argument) (Syntax: '$""String {x ... nstant {1}""')
+  IInterpolatedStringExpression (OperationKind.InterpolatedStringExpression, Type: System.String) (Syntax: '$""String {x ... nstant {1}""')
+    Parts(4):
+        IInterpolatedStringText (OperationKind.InterpolatedStringText) (Syntax: 'String ')
+          Text: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: ""String "") (Syntax: 'String ')
+        IInterpolation (OperationKind.Interpolation) (Syntax: '{x}')
+          Expression: IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Int32) (Syntax: 'x')
+          Alignment: null
+          FormatString: null
+        IInterpolatedStringText (OperationKind.InterpolatedStringText) (Syntax: ' and constant ')
+          Text: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: "" and constant "") (Syntax: ' and constant ')
+        IInterpolation (OperationKind.Interpolation) (Syntax: '{1}')
+          Expression: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1) (Syntax: '1')
+          Alignment: null
+          FormatString: null
+  InConversion: null
+  OutConversion: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -175,28 +190,31 @@ public void M()
 }
 ";
             string expectedOperationTree = @"
-IInterpolatedStringExpression (OperationKind.InterpolatedStringExpression, Type: System.String) (Syntax: '$""String {x ... nstant {1}""')
-  Parts(6):
-      IInterpolatedStringText (OperationKind.InterpolatedStringText) (Syntax: 'String ')
-        Text: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: ""String "") (Syntax: 'String ')
-      IInterpolation (OperationKind.Interpolation) (Syntax: '{x,20}')
-        Expression: IFieldReferenceExpression: System.String Class.x (OperationKind.FieldReferenceExpression, Type: System.String) (Syntax: 'x')
-            Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: Class) (Syntax: 'x')
-        Alignment: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 20) (Syntax: '20')
-        FormatString: null
-      IInterpolatedStringText (OperationKind.InterpolatedStringText) (Syntax: ' and ')
-        Text: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: "" and "") (Syntax: ' and ')
-      IInterpolation (OperationKind.Interpolation) (Syntax: '{y:D3}')
-        Expression: IFieldReferenceExpression: System.Int32 Class.y (OperationKind.FieldReferenceExpression, Type: System.Int32) (Syntax: 'y')
-            Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: Class) (Syntax: 'y')
-        Alignment: null
-        FormatString: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: ""D3"") (Syntax: ':D3')
-      IInterpolatedStringText (OperationKind.InterpolatedStringText) (Syntax: ' and constant ')
-        Text: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: "" and constant "") (Syntax: ' and constant ')
-      IInterpolation (OperationKind.Interpolation) (Syntax: '{1}')
-        Expression: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1) (Syntax: '1')
-        Alignment: null
-        FormatString: null
+IArgument (ArgumentKind.Explicit, Matching Parameter: value) (OperationKind.Argument) (Syntax: '$""String {x ... nstant {1}""')
+  IInterpolatedStringExpression (OperationKind.InterpolatedStringExpression, Type: System.String) (Syntax: '$""String {x ... nstant {1}""')
+    Parts(6):
+        IInterpolatedStringText (OperationKind.InterpolatedStringText) (Syntax: 'String ')
+          Text: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: ""String "") (Syntax: 'String ')
+        IInterpolation (OperationKind.Interpolation) (Syntax: '{x,20}')
+          Expression: IFieldReferenceExpression: System.String Class.x (OperationKind.FieldReferenceExpression, Type: System.String) (Syntax: 'x')
+              Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: Class) (Syntax: 'x')
+          Alignment: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 20) (Syntax: '20')
+          FormatString: null
+        IInterpolatedStringText (OperationKind.InterpolatedStringText) (Syntax: ' and ')
+          Text: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: "" and "") (Syntax: ' and ')
+        IInterpolation (OperationKind.Interpolation) (Syntax: '{y:D3}')
+          Expression: IFieldReferenceExpression: System.Int32 Class.y (OperationKind.FieldReferenceExpression, Type: System.Int32) (Syntax: 'y')
+              Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: Class) (Syntax: 'y')
+          Alignment: null
+          FormatString: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: ""D3"") (Syntax: ':D3')
+        IInterpolatedStringText (OperationKind.InterpolatedStringText) (Syntax: ' and constant ')
+          Text: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: "" and constant "") (Syntax: ' and constant ')
+        IInterpolation (OperationKind.Interpolation) (Syntax: '{1}')
+          Expression: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1) (Syntax: '1')
+          Alignment: null
+          FormatString: null
+  InConversion: null
+  OutConversion: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -222,16 +240,19 @@ public void M()
 }
 ";
             string expectedOperationTree = @"
-IInterpolatedStringExpression (OperationKind.InterpolatedStringExpression, Type: System.String) (Syntax: '$""String {x,y:D3}""')
-  Parts(2):
-      IInterpolatedStringText (OperationKind.InterpolatedStringText) (Syntax: 'String ')
-        Text: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: ""String "") (Syntax: 'String ')
-      IInterpolation (OperationKind.Interpolation) (Syntax: '{x,y:D3}')
-        Expression: IFieldReferenceExpression: System.String Class.x (OperationKind.FieldReferenceExpression, Type: System.String) (Syntax: 'x')
-            Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: Class) (Syntax: 'x')
-        Alignment: IFieldReferenceExpression: System.Int32 Class.y (Static) (OperationKind.FieldReferenceExpression, Type: System.Int32, Constant: 0) (Syntax: 'y')
-            Instance Receiver: null
-        FormatString: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: ""D3"") (Syntax: ':D3')
+IArgument (ArgumentKind.Explicit, Matching Parameter: value) (OperationKind.Argument) (Syntax: '$""String {x,y:D3}""')
+  IInterpolatedStringExpression (OperationKind.InterpolatedStringExpression, Type: System.String) (Syntax: '$""String {x,y:D3}""')
+    Parts(2):
+        IInterpolatedStringText (OperationKind.InterpolatedStringText) (Syntax: 'String ')
+          Text: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: ""String "") (Syntax: 'String ')
+        IInterpolation (OperationKind.Interpolation) (Syntax: '{x,y:D3}')
+          Expression: IFieldReferenceExpression: System.String Class.x (OperationKind.FieldReferenceExpression, Type: System.String) (Syntax: 'x')
+              Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: Class) (Syntax: 'x')
+          Alignment: IFieldReferenceExpression: System.Int32 Class.y (Static) (OperationKind.FieldReferenceExpression, Type: System.Int32, Constant: 0) (Syntax: 'y')
+              Instance Receiver: null
+          FormatString: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: ""D3"") (Syntax: ':D3')
+  InConversion: null
+  OutConversion: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -258,32 +279,35 @@ public void M()
 }
 ";
             string expectedOperationTree = @"
-IInterpolatedStringExpression (OperationKind.InterpolatedStringExpression, Type: System.String) (Syntax: '$""String {x ... nstant {1}""')
-  Parts(6):
-      IInterpolatedStringText (OperationKind.InterpolatedStringText) (Syntax: 'String ')
-        Text: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: ""String "") (Syntax: 'String ')
-      IInterpolation (OperationKind.Interpolation) (Syntax: '{x}')
-        Expression: ILocalReferenceExpression: x (OperationKind.LocalReferenceExpression, Type: System.String) (Syntax: 'x')
-        Alignment: null
-        FormatString: null
-      IInterpolatedStringText (OperationKind.InterpolatedStringText) (Syntax: ' and ')
-        Text: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: "" and "") (Syntax: ' and ')
-      IInterpolation (OperationKind.Interpolation) (Syntax: '{M2(y)}')
-        Expression: IInvocationExpression ( System.String Class.M2(System.Int32 z)) (OperationKind.InvocationExpression, Type: System.String) (Syntax: 'M2(y)')
-            Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: Class) (Syntax: 'M2')
-            Arguments(1):
-                IArgument (ArgumentKind.Explicit, Matching Parameter: z) (OperationKind.Argument) (Syntax: 'y')
-                  ILocalReferenceExpression: y (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'y')
-                  InConversion: null
-                  OutConversion: null
-        Alignment: null
-        FormatString: null
-      IInterpolatedStringText (OperationKind.InterpolatedStringText) (Syntax: ' and constant ')
-        Text: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: "" and constant "") (Syntax: ' and constant ')
-      IInterpolation (OperationKind.Interpolation) (Syntax: '{1}')
-        Expression: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1) (Syntax: '1')
-        Alignment: null
-        FormatString: null
+IArgument (ArgumentKind.Explicit, Matching Parameter: value) (OperationKind.Argument) (Syntax: '$""String {x ... nstant {1}""')
+  IInterpolatedStringExpression (OperationKind.InterpolatedStringExpression, Type: System.String) (Syntax: '$""String {x ... nstant {1}""')
+    Parts(6):
+        IInterpolatedStringText (OperationKind.InterpolatedStringText) (Syntax: 'String ')
+          Text: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: ""String "") (Syntax: 'String ')
+        IInterpolation (OperationKind.Interpolation) (Syntax: '{x}')
+          Expression: ILocalReferenceExpression: x (OperationKind.LocalReferenceExpression, Type: System.String) (Syntax: 'x')
+          Alignment: null
+          FormatString: null
+        IInterpolatedStringText (OperationKind.InterpolatedStringText) (Syntax: ' and ')
+          Text: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: "" and "") (Syntax: ' and ')
+        IInterpolation (OperationKind.Interpolation) (Syntax: '{M2(y)}')
+          Expression: IInvocationExpression ( System.String Class.M2(System.Int32 z)) (OperationKind.InvocationExpression, Type: System.String) (Syntax: 'M2(y)')
+              Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: Class) (Syntax: 'M2')
+              Arguments(1):
+                  IArgument (ArgumentKind.Explicit, Matching Parameter: z) (OperationKind.Argument) (Syntax: 'y')
+                    ILocalReferenceExpression: y (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'y')
+                    InConversion: null
+                    OutConversion: null
+          Alignment: null
+          FormatString: null
+        IInterpolatedStringText (OperationKind.InterpolatedStringText) (Syntax: ' and constant ')
+          Text: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: "" and constant "") (Syntax: ' and constant ')
+        IInterpolation (OperationKind.Interpolation) (Syntax: '{1}')
+          Expression: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1) (Syntax: '1')
+          Alignment: null
+          FormatString: null
+  InConversion: null
+  OutConversion: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -310,25 +334,28 @@ public void M()
 }
 ";
             string expectedOperationTree = @"
-IInterpolatedStringExpression (OperationKind.InterpolatedStringExpression, Type: System.String) (Syntax: '$""String {M2($""{y}"")}""')
-  Parts(2):
-      IInterpolatedStringText (OperationKind.InterpolatedStringText) (Syntax: 'String ')
-        Text: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: ""String "") (Syntax: 'String ')
-      IInterpolation (OperationKind.Interpolation) (Syntax: '{M2($""{y}"")}')
-        Expression: IInvocationExpression ( System.Int32 Class.M2(System.String z)) (OperationKind.InvocationExpression, Type: System.Int32) (Syntax: 'M2($""{y}"")')
-            Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: Class) (Syntax: 'M2')
-            Arguments(1):
-                IArgument (ArgumentKind.Explicit, Matching Parameter: z) (OperationKind.Argument) (Syntax: '$""{y}""')
-                  IInterpolatedStringExpression (OperationKind.InterpolatedStringExpression, Type: System.String) (Syntax: '$""{y}""')
-                    Parts(1):
-                        IInterpolation (OperationKind.Interpolation) (Syntax: '{y}')
-                          Expression: ILocalReferenceExpression: y (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'y')
-                          Alignment: null
-                          FormatString: null
-                  InConversion: null
-                  OutConversion: null
-        Alignment: null
-        FormatString: null
+IArgument (ArgumentKind.Explicit, Matching Parameter: value) (OperationKind.Argument) (Syntax: '$""String {M2($""{y}"")}""')
+  IInterpolatedStringExpression (OperationKind.InterpolatedStringExpression, Type: System.String) (Syntax: '$""String {M2($""{y}"")}""')
+    Parts(2):
+        IInterpolatedStringText (OperationKind.InterpolatedStringText) (Syntax: 'String ')
+          Text: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: ""String "") (Syntax: 'String ')
+        IInterpolation (OperationKind.Interpolation) (Syntax: '{M2($""{y}"")}')
+          Expression: IInvocationExpression ( System.Int32 Class.M2(System.String z)) (OperationKind.InvocationExpression, Type: System.Int32) (Syntax: 'M2($""{y}"")')
+              Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: Class) (Syntax: 'M2')
+              Arguments(1):
+                  IArgument (ArgumentKind.Explicit, Matching Parameter: z) (OperationKind.Argument) (Syntax: '$""{y}""')
+                    IInterpolatedStringExpression (OperationKind.InterpolatedStringExpression, Type: System.String) (Syntax: '$""{y}""')
+                      Parts(1):
+                          IInterpolation (OperationKind.Interpolation) (Syntax: '{y}')
+                            Expression: ILocalReferenceExpression: y (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'y')
+                            Alignment: null
+                            FormatString: null
+                    InConversion: null
+                    OutConversion: null
+          Alignment: null
+          FormatString: null
+  InConversion: null
+  OutConversion: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -351,23 +378,26 @@ public void M(int x)
 }
 ";
             string expectedOperationTree = @"
-IInterpolatedStringExpression (OperationKind.InterpolatedStringExpression, Type: System.String, IsInvalid) (Syntax: '$""String {x ... nt {Class}""')
-  Parts(4):
-      IInterpolatedStringText (OperationKind.InterpolatedStringText) (Syntax: 'String ')
-        Text: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: ""String "") (Syntax: 'String ')
-      IInterpolation (OperationKind.Interpolation, IsInvalid) (Syntax: '{x1}')
-        Expression: IInvalidExpression (OperationKind.InvalidExpression, Type: ?, IsInvalid) (Syntax: 'x1')
-            Children(0)
-        Alignment: null
-        FormatString: null
-      IInterpolatedStringText (OperationKind.InterpolatedStringText) (Syntax: ' and constant ')
-        Text: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: "" and constant "") (Syntax: ' and constant ')
-      IInterpolation (OperationKind.Interpolation, IsInvalid) (Syntax: '{Class}')
-        Expression: IInvalidExpression (OperationKind.InvalidExpression, Type: Class, IsInvalid) (Syntax: 'Class')
-            Children(1):
-                IOperation:  (OperationKind.None, IsInvalid) (Syntax: 'Class')
-        Alignment: null
-        FormatString: null
+IArgument (ArgumentKind.Explicit, Matching Parameter: null) (OperationKind.Argument, IsInvalid) (Syntax: '$""String {x ... nt {Class}""')
+  IInterpolatedStringExpression (OperationKind.InterpolatedStringExpression, Type: System.String, IsInvalid) (Syntax: '$""String {x ... nt {Class}""')
+    Parts(4):
+        IInterpolatedStringText (OperationKind.InterpolatedStringText) (Syntax: 'String ')
+          Text: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: ""String "") (Syntax: 'String ')
+        IInterpolation (OperationKind.Interpolation, IsInvalid) (Syntax: '{x1}')
+          Expression: IInvalidExpression (OperationKind.InvalidExpression, Type: ?, IsInvalid) (Syntax: 'x1')
+              Children(0)
+          Alignment: null
+          FormatString: null
+        IInterpolatedStringText (OperationKind.InterpolatedStringText) (Syntax: ' and constant ')
+          Text: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: "" and constant "") (Syntax: ' and constant ')
+        IInterpolation (OperationKind.Interpolation, IsInvalid) (Syntax: '{Class}')
+          Expression: IInvalidExpression (OperationKind.InvalidExpression, Type: Class, IsInvalid) (Syntax: 'Class')
+              Children(1):
+                  IOperation:  (OperationKind.None, IsInvalid) (Syntax: 'Class')
+          Alignment: null
+          FormatString: null
+  InConversion: null
+  OutConversion: null
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0103: The name 'x1' does not exist in the current context
diff --git a/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_ILocalReferenceExpression.cs b/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_ILocalReferenceExpression.cs
index f1d40a3f54934efd616c0c2b5ab357ea663719c3..1591cd787a094ecd7884ed61fb725686208762b9 100644
--- a/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_ILocalReferenceExpression.cs
+++ b/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_ILocalReferenceExpression.cs
@@ -1,4 +1,4 @@
-// Copyright (c) Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information.
+// Copyright (c) Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information.
 
 
 using Microsoft.CodeAnalysis.CSharp.Syntax;
@@ -30,7 +30,10 @@ public void M2(out int i )
 }
 ";
             string expectedOperationTree = @"
-ILocalReferenceExpression: i (IsDeclaration: True) (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'var i')
+IArgument (ArgumentKind.Explicit, Matching Parameter: i) (OperationKind.Argument) (Syntax: 'var i')
+  ILocalReferenceExpression: i (IsDeclaration: True) (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'var i')
+  InConversion: null
+  OutConversion: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
diff --git a/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IObjectCreationExpression.cs b/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IObjectCreationExpression.cs
index 7059d7768c6573a1591dc66d23c32ae263e19e1a..2026c42751f3ff8dd448aa0f978ce551fb48c8f5 100644
--- a/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IObjectCreationExpression.cs
+++ b/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IObjectCreationExpression.cs
@@ -51,13 +51,13 @@ public void M1()
     Local_6: F e1
     Local_7: F e2
   IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'var x1 = new F();')
-    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'var x1 = new F();')
+    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'x1 = new F()')
       Variables: Local_1: F x1
       Initializer: IObjectCreationExpression (Constructor: F..ctor()) (OperationKind.ObjectCreationExpression, Type: F) (Syntax: 'new F()')
           Arguments(0)
           Initializer: null
   IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'var x2 = ne ... ield = 2 };')
-    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'var x2 = ne ... ield = 2 };')
+    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'x2 = new F( ... Field = 2 }')
       Variables: Local_1: F x2
       Initializer: IObjectCreationExpression (Constructor: F..ctor()) (OperationKind.ObjectCreationExpression, Type: F) (Syntax: 'new F() { Field = 2 }')
           Arguments(0)
@@ -68,7 +68,7 @@ public void M1()
                         Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: F) (Syntax: 'Field')
                     Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 2) (Syntax: '2')
   IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'var x3 = ne ... ty1 = """" };')
-    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'var x3 = ne ... ty1 = """" };')
+    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'x3 = new F( ... rty1 = """" }')
       Variables: Local_1: F x3
       Initializer: IObjectCreationExpression (Constructor: F..ctor()) (OperationKind.ObjectCreationExpression, Type: F) (Syntax: 'new F() { P ... rty1 = """" }')
           Arguments(0)
@@ -79,7 +79,7 @@ public void M1()
                         Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: F) (Syntax: 'Property1')
                     Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: """") (Syntax: '""""')
   IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'var x4 = ne ... ield = 2 };')
-    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'var x4 = ne ... ield = 2 };')
+    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'x4 = new F( ... Field = 2 }')
       Variables: Local_1: F x4
       Initializer: IObjectCreationExpression (Constructor: F..ctor()) (OperationKind.ObjectCreationExpression, Type: F) (Syntax: 'new F() { P ... Field = 2 }')
           Arguments(0)
@@ -94,7 +94,7 @@ public void M1()
                         Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: F) (Syntax: 'Field')
                     Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 2) (Syntax: '2')
   IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'var x5 = ne ... = true } };')
-    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'var x5 = ne ... = true } };')
+    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'x5 = new F( ...  = true } }')
       Variables: Local_1: F x5
       Initializer: IObjectCreationExpression (Constructor: F..ctor()) (OperationKind.ObjectCreationExpression, Type: F) (Syntax: 'new F() { P ...  = true } }')
           Arguments(0)
@@ -112,7 +112,7 @@ public void M1()
                                       Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: B) (Syntax: 'Field')
                                   Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Boolean, Constant: True) (Syntax: 'true')
   IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'var e1 = ne ... rty2 = 1 };')
-    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'var e1 = ne ... rty2 = 1 };')
+    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'e1 = new F( ... erty2 = 1 }')
       Variables: Local_1: F e1
       Initializer: IObjectCreationExpression (Constructor: F..ctor()) (OperationKind.ObjectCreationExpression, Type: F, IsInvalid) (Syntax: 'new F() { P ... erty2 = 1 }')
           Arguments(0)
@@ -125,7 +125,7 @@ public void M1()
                         Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
                         Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1, IsInvalid) (Syntax: '1')
   IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'var e2 = new F() { """" };')
-    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'var e2 = new F() { """" };')
+    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'e2 = new F() { """" }')
       Variables: Local_1: F e2
       Initializer: IObjectCreationExpression (Constructor: F..ctor()) (OperationKind.ObjectCreationExpression, Type: F, IsInvalid) (Syntax: 'new F() { """" }')
           Arguments(0)
diff --git a/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IParameterReferenceExpression.cs b/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IParameterReferenceExpression.cs
index 40cba14ee88a26e1c6bfb37590e583fdba049b2a..85c98d628c5853f909318922beb22679b709b426 100644
--- a/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IParameterReferenceExpression.cs
+++ b/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IParameterReferenceExpression.cs
@@ -302,6 +302,8 @@ public void Method2(int x, int y)
 IOperation:  (OperationKind.None) (Syntax: 'new Delegate(Method2)')
   Children(1):
       IOperation:  (OperationKind.None) (Syntax: 'Method2')
+        Children(1):
+            IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: Class) (Syntax: 'Method2')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -433,7 +435,7 @@ internal class Class
 {
     public unsafe void M(int[] array)
     {
-        fixed (int* p /*<bind>*/= array/*</bind>*/)
+        fixed (int* /*<bind>*/p = array/*</bind>*/)
         {
             *p = 1;
         }
@@ -441,12 +443,11 @@ public unsafe void M(int[] array)
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'p /*<bind>*/= array')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'p /*<bind>*/= array')
-    Variables: Local_1: System.Int32* p
-    Initializer: IOperation:  (OperationKind.None) (Syntax: 'array')
-        Children(1):
-            IParameterReferenceExpression: array (OperationKind.ParameterReferenceExpression, Type: System.Int32[]) (Syntax: 'array')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'p = array')
+  Variables: Local_1: System.Int32* p
+  Initializer: IOperation:  (OperationKind.None) (Syntax: 'array')
+      Children(1):
+          IParameterReferenceExpression: array (OperationKind.ParameterReferenceExpression, Type: System.Int32[]) (Syntax: 'array')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0227: Unsafe code may only appear if compiling with /unsafe
@@ -454,7 +455,7 @@ public unsafe void M(int[] array)
                 Diagnostic(ErrorCode.ERR_IllegalUnsafe, "M").WithLocation(6, 24)
             };
 
-            VerifyOperationTreeAndDiagnosticsForTest<EqualsValueClauseSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<VariableDeclaratorSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         [CompilerTrait(CompilerFeature.IOperation)]
@@ -535,13 +536,13 @@ class Class1
 {
     public void M(dynamic d, int x)
     {
-        var y /*<bind>*/= d[x]/*</bind>*/;
+        /*<bind>*/var y = d[x];/*</bind>*/
     }
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'var y /*<bi ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'var y /*<bi ... *</bind>*/;')
+IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'var y = d[x];')
+  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'y = d[x]')
     Variables: Local_1: dynamic y
     Initializer: IOperation:  (OperationKind.None) (Syntax: 'd[x]')
         Children(2):
@@ -550,7 +551,7 @@ public void M(dynamic d, int x)
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
-            VerifyOperationTreeAndDiagnosticsForTest<EqualsValueClauseSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         [CompilerTrait(CompilerFeature.IOperation)]
@@ -680,26 +681,29 @@ public void M(string x, int y)
 }
 ";
             string expectedOperationTree = @"
-IInterpolatedStringExpression (OperationKind.InterpolatedStringExpression, Type: System.String) (Syntax: '$""String {x ... nstant {1}""')
-  Parts(6):
-      IInterpolatedStringText (OperationKind.InterpolatedStringText) (Syntax: 'String ')
-        Text: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: ""String "") (Syntax: 'String ')
-      IInterpolation (OperationKind.Interpolation) (Syntax: '{x,20}')
-        Expression: IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.String) (Syntax: 'x')
-        Alignment: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 20) (Syntax: '20')
-        FormatString: null
-      IInterpolatedStringText (OperationKind.InterpolatedStringText) (Syntax: ' and ')
-        Text: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: "" and "") (Syntax: ' and ')
-      IInterpolation (OperationKind.Interpolation) (Syntax: '{y:D3}')
-        Expression: IParameterReferenceExpression: y (OperationKind.ParameterReferenceExpression, Type: System.Int32) (Syntax: 'y')
-        Alignment: null
-        FormatString: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: ""D3"") (Syntax: ':D3')
-      IInterpolatedStringText (OperationKind.InterpolatedStringText) (Syntax: ' and constant ')
-        Text: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: "" and constant "") (Syntax: ' and constant ')
-      IInterpolation (OperationKind.Interpolation) (Syntax: '{1}')
-        Expression: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1) (Syntax: '1')
-        Alignment: null
-        FormatString: null
+IArgument (ArgumentKind.Explicit, Matching Parameter: value) (OperationKind.Argument) (Syntax: '$""String {x ... nstant {1}""')
+  IInterpolatedStringExpression (OperationKind.InterpolatedStringExpression, Type: System.String) (Syntax: '$""String {x ... nstant {1}""')
+    Parts(6):
+        IInterpolatedStringText (OperationKind.InterpolatedStringText) (Syntax: 'String ')
+          Text: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: ""String "") (Syntax: 'String ')
+        IInterpolation (OperationKind.Interpolation) (Syntax: '{x,20}')
+          Expression: IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.String) (Syntax: 'x')
+          Alignment: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 20) (Syntax: '20')
+          FormatString: null
+        IInterpolatedStringText (OperationKind.InterpolatedStringText) (Syntax: ' and ')
+          Text: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: "" and "") (Syntax: ' and ')
+        IInterpolation (OperationKind.Interpolation) (Syntax: '{y:D3}')
+          Expression: IParameterReferenceExpression: y (OperationKind.ParameterReferenceExpression, Type: System.Int32) (Syntax: 'y')
+          Alignment: null
+          FormatString: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: ""D3"") (Syntax: ':D3')
+        IInterpolatedStringText (OperationKind.InterpolatedStringText) (Syntax: ' and constant ')
+          Text: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: "" and constant "") (Syntax: ' and constant ')
+        IInterpolation (OperationKind.Interpolation) (Syntax: '{1}')
+          Expression: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1) (Syntax: '1')
+          Alignment: null
+          FormatString: null
+  InConversion: null
+  OutConversion: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -755,18 +759,15 @@ public void M(int x)
 }
 ";
             string expectedOperationTree = @"
-ISwitchStatement (1 cases) (OperationKind.SwitchStatement) (Syntax: 'switch (x) ... }')
-  Switch expression: IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Int32) (Syntax: 'x')
-  Sections:
-      ISwitchCase (1 case clauses, 1 statements) (OperationKind.SwitchCase) (Syntax: 'case var y  ... break;')
-          Clauses:
-              IPatternCaseClause (Label Symbol: case var y when (x >= 10):) (CaseKind.Pattern) (OperationKind.PatternCaseClause) (Syntax: 'case var y  ...  (x >= 10):')
-                Pattern: IDeclarationPattern (Declared Symbol: System.Int32 y) (OperationKind.DeclarationPattern) (Syntax: 'var y')
-                Guard Expression: IBinaryOperatorExpression (BinaryOperatorKind.GreaterThanOrEqual) (OperationKind.BinaryOperatorExpression, Type: System.Boolean) (Syntax: 'x >= 10')
-                    Left: IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Int32) (Syntax: 'x')
-                    Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 10) (Syntax: '10')
-          Body:
-              IBranchStatement (BranchKind.Break) (OperationKind.BranchStatement) (Syntax: 'break;')
+ISwitchCase (1 case clauses, 1 statements) (OperationKind.SwitchCase) (Syntax: 'case var y  ... break;')
+    Clauses:
+        IPatternCaseClause (Label Symbol: case var y when (x >= 10):) (CaseKind.Pattern) (OperationKind.PatternCaseClause) (Syntax: 'case var y  ...  (x >= 10):')
+          Pattern: IDeclarationPattern (Declared Symbol: System.Int32 y) (OperationKind.DeclarationPattern) (Syntax: 'var y')
+          Guard Expression: IBinaryOperatorExpression (BinaryOperatorKind.GreaterThanOrEqual) (OperationKind.BinaryOperatorExpression, Type: System.Boolean) (Syntax: 'x >= 10')
+              Left: IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Int32) (Syntax: 'x')
+              Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 10) (Syntax: '10')
+    Body:
+        IBranchStatement (BranchKind.Break) (OperationKind.BranchStatement) (Syntax: 'break;')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -794,23 +795,7 @@ public void M(int x)
 }
 ";
             string expectedOperationTree = @"
-ISwitchStatement (2 cases) (OperationKind.SwitchStatement) (Syntax: 'switch (x) ... }')
-  Switch expression: IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Int32) (Syntax: 'x')
-  Sections:
-      ISwitchCase (1 case clauses, 1 statements) (OperationKind.SwitchCase) (Syntax: 'case var y  ... break;')
-          Clauses:
-              IPatternCaseClause (Label Symbol: case var y when (x >= 10):) (CaseKind.Pattern) (OperationKind.PatternCaseClause) (Syntax: 'case var y  ...  (x >= 10):')
-                Pattern: IDeclarationPattern (Declared Symbol: System.Int32 y) (OperationKind.DeclarationPattern) (Syntax: 'var y')
-                Guard Expression: IBinaryOperatorExpression (BinaryOperatorKind.GreaterThanOrEqual) (OperationKind.BinaryOperatorExpression, Type: System.Boolean) (Syntax: 'x >= 10')
-                    Left: IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Int32) (Syntax: 'x')
-                    Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 10) (Syntax: '10')
-          Body:
-              IBranchStatement (BranchKind.Break) (OperationKind.BranchStatement) (Syntax: 'break;')
-      ISwitchCase (1 case clauses, 1 statements) (OperationKind.SwitchCase) (Syntax: 'default:/*< ... break;')
-          Clauses:
-              IDefaultCaseClause (CaseKind.Default) (OperationKind.DefaultCaseClause) (Syntax: 'default:')
-          Body:
-              IBranchStatement (BranchKind.Break) (OperationKind.BranchStatement) (Syntax: 'break;')
+IDefaultCaseClause (CaseKind.Default) (OperationKind.DefaultCaseClause) (Syntax: 'default:')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -902,7 +887,10 @@ public I F(object x)
                 references: new[] { MscorlibRef, SystemRef, compilation0.EmitToImageReference(embedInteropTypes: true) });
 
             string expectedOperationTree = @"
-IOperation:  (OperationKind.None, IsInvalid) (Syntax: 'new I(x)')
+IInvalidExpression (OperationKind.InvalidExpression, Type: I, IsInvalid) (Syntax: 'new I(x)')
+  Children(2):
+      IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Object, IsInvalid) (Syntax: 'x')
+      IOperation:  (OperationKind.None, IsInvalid) (Syntax: 'new I(x)')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                     // (6,25): error CS1729: 'I' does not contain a constructor that takes 1 arguments
@@ -932,10 +920,13 @@ static void M(int x, __arglist)
 }
 ";
             string expectedOperationTree = @"
-IOperation:  (OperationKind.None) (Syntax: '__arglist(x, y)')
-  Children(2):
-      IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Int32) (Syntax: 'x')
-      IParameterReferenceExpression: y (OperationKind.ParameterReferenceExpression, Type: System.Boolean) (Syntax: 'y')
+IArgument (ArgumentKind.Explicit, Matching Parameter: null) (OperationKind.Argument) (Syntax: '__arglist(x, y)')
+  IOperation:  (OperationKind.None) (Syntax: '__arglist(x, y)')
+    Children(2):
+        IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Int32) (Syntax: 'x')
+        IParameterReferenceExpression: y (OperationKind.ParameterReferenceExpression, Type: System.Boolean) (Syntax: 'y')
+  InConversion: null
+  OutConversion: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
diff --git a/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IPatternSwitchCase.cs b/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IPatternSwitchCase.cs
index df67993daaa3261977ef3a8fcc25c7ecb51f2bc9..c34b634fb6e2409cad355161fd92875d75f9999e 100644
--- a/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IPatternSwitchCase.cs
+++ b/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IPatternSwitchCase.cs
@@ -29,16 +29,9 @@ void M()
 }
 ";
             string expectedOperationTree = @"
-ISwitchStatement (1 cases) (OperationKind.SwitchStatement) (Syntax: 'switch (x) ... }')
-  Switch expression: ILocalReferenceExpression: x (OperationKind.LocalReferenceExpression, Type: System.Int32?) (Syntax: 'x')
-  Sections:
-      ISwitchCase (1 case clauses, 1 statements) (OperationKind.SwitchCase) (Syntax: 'case var y: ... break;')
-          Clauses:
-              IPatternCaseClause (Label Symbol: case var y:) (CaseKind.Pattern) (OperationKind.PatternCaseClause) (Syntax: 'case var y:')
-                Pattern: IDeclarationPattern (Declared Symbol: System.Int32? y) (OperationKind.DeclarationPattern) (Syntax: 'var y')
-                Guard Expression: null
-          Body:
-              IBranchStatement (BranchKind.Break) (OperationKind.BranchStatement) (Syntax: 'break;')
+IPatternCaseClause (Label Symbol: case var y:) (CaseKind.Pattern) (OperationKind.PatternCaseClause) (Syntax: 'case var y:')
+  Pattern: IDeclarationPattern (Declared Symbol: System.Int32? y) (OperationKind.DeclarationPattern) (Syntax: 'var y')
+  Guard Expression: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -65,16 +58,9 @@ void M()
 }
 ";
             string expectedOperationTree = @"
-ISwitchStatement (1 cases) (OperationKind.SwitchStatement) (Syntax: 'switch (x) ... }')
-  Switch expression: ILocalReferenceExpression: x (OperationKind.LocalReferenceExpression, Type: System.Int32?) (Syntax: 'x')
-  Sections:
-      ISwitchCase (1 case clauses, 1 statements) (OperationKind.SwitchCase) (Syntax: 'case int y: ... break;')
-          Clauses:
-              IPatternCaseClause (Label Symbol: case int y:) (CaseKind.Pattern) (OperationKind.PatternCaseClause) (Syntax: 'case int y:')
-                Pattern: IDeclarationPattern (Declared Symbol: System.Int32 y) (OperationKind.DeclarationPattern) (Syntax: 'int y')
-                Guard Expression: null
-          Body:
-              IBranchStatement (BranchKind.Break) (OperationKind.BranchStatement) (Syntax: 'break;')
+IPatternCaseClause (Label Symbol: case int y:) (CaseKind.Pattern) (OperationKind.PatternCaseClause) (Syntax: 'case int y:')
+  Pattern: IDeclarationPattern (Declared Symbol: System.Int32 y) (OperationKind.DeclarationPattern) (Syntax: 'int y')
+  Guard Expression: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -100,16 +86,9 @@ void M(object x)
 }
 ";
             string expectedOperationTree = @"
-ISwitchStatement (1 cases) (OperationKind.SwitchStatement) (Syntax: 'switch (x) ... }')
-  Switch expression: IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Object) (Syntax: 'x')
-  Sections:
-      ISwitchCase (1 case clauses, 1 statements) (OperationKind.SwitchCase) (Syntax: 'case X y:/* ... break;')
-          Clauses:
-              IPatternCaseClause (Label Symbol: case X y:) (CaseKind.Pattern) (OperationKind.PatternCaseClause) (Syntax: 'case X y:')
-                Pattern: IDeclarationPattern (Declared Symbol: X y) (OperationKind.DeclarationPattern) (Syntax: 'X y')
-                Guard Expression: null
-          Body:
-              IBranchStatement (BranchKind.Break) (OperationKind.BranchStatement) (Syntax: 'break;')
+IPatternCaseClause (Label Symbol: case X y:) (CaseKind.Pattern) (OperationKind.PatternCaseClause) (Syntax: 'case X y:')
+  Pattern: IDeclarationPattern (Declared Symbol: X y) (OperationKind.DeclarationPattern) (Syntax: 'X y')
+  Guard Expression: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -135,16 +114,9 @@ class X
 }
 ";
             string expectedOperationTree = @"
-ISwitchStatement (1 cases) (OperationKind.SwitchStatement) (Syntax: 'switch (x) ... }')
-  Switch expression: IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Object) (Syntax: 'x')
-  Sections:
-      ISwitchCase (1 case clauses, 1 statements) (OperationKind.SwitchCase) (Syntax: 'case T y:/* ... break;')
-          Clauses:
-              IPatternCaseClause (Label Symbol: case T y:) (CaseKind.Pattern) (OperationKind.PatternCaseClause) (Syntax: 'case T y:')
-                Pattern: IDeclarationPattern (Declared Symbol: T y) (OperationKind.DeclarationPattern) (Syntax: 'T y')
-                Guard Expression: null
-          Body:
-              IBranchStatement (BranchKind.Break) (OperationKind.BranchStatement) (Syntax: 'break;')
+IPatternCaseClause (Label Symbol: case T y:) (CaseKind.Pattern) (OperationKind.PatternCaseClause) (Syntax: 'case T y:')
+  Pattern: IDeclarationPattern (Declared Symbol: T y) (OperationKind.DeclarationPattern) (Syntax: 'T y')
+  Guard Expression: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -170,16 +142,9 @@ class X
 }
 ";
             string expectedOperationTree = @"
-ISwitchStatement (1 cases) (OperationKind.SwitchStatement, IsInvalid) (Syntax: 'switch (x) ... }')
-  Switch expression: IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Object) (Syntax: 'x')
-  Sections:
-      ISwitchCase (1 case clauses, 1 statements) (OperationKind.SwitchCase, IsInvalid) (Syntax: 'case dynami ... break;')
-          Clauses:
-              IPatternCaseClause (Label Symbol: case dynamic y:) (CaseKind.Pattern) (OperationKind.PatternCaseClause, IsInvalid) (Syntax: 'case dynamic y:')
-                Pattern: IDeclarationPattern (Declared Symbol: dynamic y) (OperationKind.DeclarationPattern, IsInvalid) (Syntax: 'dynamic y')
-                Guard Expression: null
-          Body:
-              IBranchStatement (BranchKind.Break) (OperationKind.BranchStatement) (Syntax: 'break;')
+IPatternCaseClause (Label Symbol: case dynamic y:) (CaseKind.Pattern) (OperationKind.PatternCaseClause, IsInvalid) (Syntax: 'case dynamic y:')
+  Pattern: IDeclarationPattern (Declared Symbol: dynamic y) (OperationKind.DeclarationPattern, IsInvalid) (Syntax: 'dynamic y')
+  Guard Expression: null
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS8208: It is not legal to use the type 'dynamic' in a pattern.
@@ -211,26 +176,9 @@ void M(object x)
 }
 ";
             string expectedOperationTree = @"
-ISwitchStatement (2 cases) (OperationKind.SwitchStatement) (Syntax: 'switch (x) ... }')
-  Switch expression: IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Object) (Syntax: 'x')
-  Sections:
-      ISwitchCase (1 case clauses, 1 statements) (OperationKind.SwitchCase) (Syntax: 'case null: ... break;')
-          Clauses:
-              IPatternCaseClause (Label Symbol: case null:) (CaseKind.Pattern) (OperationKind.PatternCaseClause) (Syntax: 'case null:')
-                Pattern: IConstantPattern (OperationKind.ConstantPattern) (Syntax: 'case null:')
-                    Value: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object, Constant: null) (Syntax: 'null')
-                        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-                        Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: null, Constant: null) (Syntax: 'null')
-                Guard Expression: null
-          Body:
-              IBranchStatement (BranchKind.Break) (OperationKind.BranchStatement) (Syntax: 'break;')
-      ISwitchCase (1 case clauses, 1 statements) (OperationKind.SwitchCase) (Syntax: 'case X y:/* ... break;')
-          Clauses:
-              IPatternCaseClause (Label Symbol: case X y:) (CaseKind.Pattern) (OperationKind.PatternCaseClause) (Syntax: 'case X y:')
-                Pattern: IDeclarationPattern (Declared Symbol: X y) (OperationKind.DeclarationPattern) (Syntax: 'X y')
-                Guard Expression: null
-          Body:
-              IBranchStatement (BranchKind.Break) (OperationKind.BranchStatement) (Syntax: 'break;')
+IPatternCaseClause (Label Symbol: case X y:) (CaseKind.Pattern) (OperationKind.PatternCaseClause) (Syntax: 'case X y:')
+  Pattern: IDeclarationPattern (Declared Symbol: X y) (OperationKind.DeclarationPattern) (Syntax: 'X y')
+  Guard Expression: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -257,22 +205,9 @@ void M(object x)
 }
 ";
             string expectedOperationTree = @"
-ISwitchStatement (1 cases) (OperationKind.SwitchStatement) (Syntax: 'switch (x) ... }')
-  Switch expression: IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Object) (Syntax: 'x')
-  Sections:
-      ISwitchCase (2 case clauses, 1 statements) (OperationKind.SwitchCase) (Syntax: 'case null: ... break;')
-          Clauses:
-              IPatternCaseClause (Label Symbol: case null:) (CaseKind.Pattern) (OperationKind.PatternCaseClause) (Syntax: 'case null:')
-                Pattern: IConstantPattern (OperationKind.ConstantPattern) (Syntax: 'case null:')
-                    Value: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object, Constant: null) (Syntax: 'null')
-                        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-                        Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: null, Constant: null) (Syntax: 'null')
-                Guard Expression: null
-              IPatternCaseClause (Label Symbol: case X y:) (CaseKind.Pattern) (OperationKind.PatternCaseClause) (Syntax: 'case X y:')
-                Pattern: IDeclarationPattern (Declared Symbol: X y) (OperationKind.DeclarationPattern) (Syntax: 'X y')
-                Guard Expression: null
-          Body:
-              IBranchStatement (BranchKind.Break) (OperationKind.BranchStatement) (Syntax: 'break;')
+IPatternCaseClause (Label Symbol: case X y:) (CaseKind.Pattern) (OperationKind.PatternCaseClause) (Syntax: 'case X y:')
+  Pattern: IDeclarationPattern (Declared Symbol: X y) (OperationKind.DeclarationPattern) (Syntax: 'X y')
+  Guard Expression: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -300,23 +235,9 @@ void M(object x)
 }
 ";
             string expectedOperationTree = @"
-ISwitchStatement (1 cases) (OperationKind.SwitchStatement) (Syntax: 'switch (x) ... }')
-  Switch expression: IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Object) (Syntax: 'x')
-  Sections:
-      ISwitchCase (3 case clauses, 1 statements) (OperationKind.SwitchCase) (Syntax: 'case null: ... break;')
-          Clauses:
-              IPatternCaseClause (Label Symbol: case null:) (CaseKind.Pattern) (OperationKind.PatternCaseClause) (Syntax: 'case null:')
-                Pattern: IConstantPattern (OperationKind.ConstantPattern) (Syntax: 'case null:')
-                    Value: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object, Constant: null) (Syntax: 'null')
-                        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-                        Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: null, Constant: null) (Syntax: 'null')
-                Guard Expression: null
-              IPatternCaseClause (Label Symbol: case X y:) (CaseKind.Pattern) (OperationKind.PatternCaseClause) (Syntax: 'case X y:')
-                Pattern: IDeclarationPattern (Declared Symbol: X y) (OperationKind.DeclarationPattern) (Syntax: 'X y')
-                Guard Expression: null
-              IDefaultCaseClause (CaseKind.Default) (OperationKind.DefaultCaseClause) (Syntax: 'default:')
-          Body:
-              IBranchStatement (BranchKind.Break) (OperationKind.BranchStatement) (Syntax: 'break;')
+IPatternCaseClause (Label Symbol: case X y:) (CaseKind.Pattern) (OperationKind.PatternCaseClause) (Syntax: 'case X y:')
+  Pattern: IDeclarationPattern (Declared Symbol: X y) (OperationKind.DeclarationPattern) (Syntax: 'X y')
+  Guard Expression: null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -342,20 +263,13 @@ void M(object x)
 }
 ";
             string expectedOperationTree = @"
-ISwitchStatement (1 cases) (OperationKind.SwitchStatement) (Syntax: 'switch (x) ... }')
-  Switch expression: IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Object) (Syntax: 'x')
-  Sections:
-      ISwitchCase (1 case clauses, 1 statements) (OperationKind.SwitchCase) (Syntax: 'case X y wh ... break;')
-          Clauses:
-              IPatternCaseClause (Label Symbol: case X y when x != null:) (CaseKind.Pattern) (OperationKind.PatternCaseClause) (Syntax: 'case X y when x != null:')
-                Pattern: IDeclarationPattern (Declared Symbol: X y) (OperationKind.DeclarationPattern) (Syntax: 'X y')
-                Guard Expression: IBinaryOperatorExpression (BinaryOperatorKind.NotEquals) (OperationKind.BinaryOperatorExpression, Type: System.Boolean) (Syntax: 'x != null')
-                    Left: IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Object) (Syntax: 'x')
-                    Right: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object, Constant: null) (Syntax: 'null')
-                        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
-                        Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: null, Constant: null) (Syntax: 'null')
-          Body:
-              IBranchStatement (BranchKind.Break) (OperationKind.BranchStatement) (Syntax: 'break;')
+IPatternCaseClause (Label Symbol: case X y when x != null:) (CaseKind.Pattern) (OperationKind.PatternCaseClause) (Syntax: 'case X y when x != null:')
+  Pattern: IDeclarationPattern (Declared Symbol: X y) (OperationKind.DeclarationPattern) (Syntax: 'X y')
+  Guard Expression: IBinaryOperatorExpression (BinaryOperatorKind.NotEquals) (OperationKind.BinaryOperatorExpression, Type: System.Boolean) (Syntax: 'x != null')
+      Left: IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Object) (Syntax: 'x')
+      Right: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object, Constant: null) (Syntax: 'null')
+          Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
+          Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: null, Constant: null) (Syntax: 'null')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -381,18 +295,11 @@ void M(object x)
 }
 ";
             string expectedOperationTree = @"
-ISwitchStatement (1 cases) (OperationKind.SwitchStatement) (Syntax: 'switch (x) ... }')
-  Switch expression: IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Object) (Syntax: 'x')
-  Sections:
-      ISwitchCase (1 case clauses, 1 statements) (OperationKind.SwitchCase) (Syntax: 'case X y wh ... break;')
-          Clauses:
-              IPatternCaseClause (Label Symbol: case X y when x is X z :) (CaseKind.Pattern) (OperationKind.PatternCaseClause) (Syntax: 'case X y when x is X z :')
-                Pattern: IDeclarationPattern (Declared Symbol: X y) (OperationKind.DeclarationPattern) (Syntax: 'X y')
-                Guard Expression: IIsPatternExpression (OperationKind.IsPatternExpression, Type: System.Boolean) (Syntax: 'x is X z')
-                    Expression: IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Object) (Syntax: 'x')
-                    Pattern: IDeclarationPattern (Declared Symbol: X z) (OperationKind.DeclarationPattern) (Syntax: 'X z')
-          Body:
-              IBranchStatement (BranchKind.Break) (OperationKind.BranchStatement) (Syntax: 'break;')
+IPatternCaseClause (Label Symbol: case X y when x is X z :) (CaseKind.Pattern) (OperationKind.PatternCaseClause) (Syntax: 'case X y when x is X z :')
+  Pattern: IDeclarationPattern (Declared Symbol: X y) (OperationKind.DeclarationPattern) (Syntax: 'X y')
+  Guard Expression: IIsPatternExpression (OperationKind.IsPatternExpression, Type: System.Boolean) (Syntax: 'x is X z')
+      Expression: IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Object) (Syntax: 'x')
+      Pattern: IDeclarationPattern (Declared Symbol: X z) (OperationKind.DeclarationPattern) (Syntax: 'X z')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -418,17 +325,10 @@ void M(object x)
 }
 ";
             string expectedOperationTree = @"
-ISwitchStatement (1 cases) (OperationKind.SwitchStatement, IsInvalid) (Syntax: 'switch (x) ... }')
-  Switch expression: IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Object) (Syntax: 'x')
-  Sections:
-      ISwitchCase (1 case clauses, 1 statements) (OperationKind.SwitchCase, IsInvalid) (Syntax: 'case X y wh ... break;')
-          Clauses:
-              IPatternCaseClause (Label Symbol: case X y when :) (CaseKind.Pattern) (OperationKind.PatternCaseClause, IsInvalid) (Syntax: 'case X y when :')
-                Pattern: IDeclarationPattern (Declared Symbol: X y) (OperationKind.DeclarationPattern) (Syntax: 'X y')
-                Guard Expression: IInvalidExpression (OperationKind.InvalidExpression, Type: null, IsInvalid) (Syntax: '')
-                    Children(0)
-          Body:
-              IBranchStatement (BranchKind.Break) (OperationKind.BranchStatement) (Syntax: 'break;')
+IPatternCaseClause (Label Symbol: case X y when :) (CaseKind.Pattern) (OperationKind.PatternCaseClause, IsInvalid) (Syntax: 'case X y when :')
+  Pattern: IDeclarationPattern (Declared Symbol: X y) (OperationKind.DeclarationPattern) (Syntax: 'X y')
+  Guard Expression: IInvalidExpression (OperationKind.InvalidExpression, Type: null, IsInvalid) (Syntax: '')
+      Children(0)
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS1525: Invalid expression term ':'
@@ -458,18 +358,11 @@ void M(object x)
 }
 ";
             string expectedOperationTree = @"
-ISwitchStatement (1 cases) (OperationKind.SwitchStatement, IsInvalid) (Syntax: 'switch (x) ... }')
-  Switch expression: IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Object) (Syntax: 'x')
-  Sections:
-      ISwitchCase (1 case clauses, 1 statements) (OperationKind.SwitchCase, IsInvalid) (Syntax: 'case X y wh ... break;')
-          Clauses:
-              IPatternCaseClause (Label Symbol: case X y when x:) (CaseKind.Pattern) (OperationKind.PatternCaseClause, IsInvalid) (Syntax: 'case X y when x:')
-                Pattern: IDeclarationPattern (Declared Symbol: X y) (OperationKind.DeclarationPattern) (Syntax: 'X y')
-                Guard Expression: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Boolean, IsInvalid) (Syntax: 'x')
-                    Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-                    Operand: IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Object, IsInvalid) (Syntax: 'x')
-          Body:
-              IBranchStatement (BranchKind.Break) (OperationKind.BranchStatement) (Syntax: 'break;')
+IPatternCaseClause (Label Symbol: case X y when x:) (CaseKind.Pattern) (OperationKind.PatternCaseClause, IsInvalid) (Syntax: 'case X y when x:')
+  Pattern: IDeclarationPattern (Declared Symbol: X y) (OperationKind.DeclarationPattern) (Syntax: 'X y')
+  Guard Expression: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Boolean, IsInvalid) (Syntax: 'x')
+      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Operand: IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Object, IsInvalid) (Syntax: 'x')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0266: Cannot implicitly convert type 'object' to 'bool'. An explicit conversion exists (are you missing a cast?)
@@ -533,17 +426,7 @@ void M(object x)
 }
 ";
             string expectedOperationTree = @"
-ISwitchStatement (1 cases) (OperationKind.SwitchStatement) (Syntax: 'switch (x) ... }')
-  Switch expression: IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Object) (Syntax: 'x')
-  Sections:
-      ISwitchCase (2 case clauses, 1 statements) (OperationKind.SwitchCase) (Syntax: 'case X y: ... break;')
-          Clauses:
-              IPatternCaseClause (Label Symbol: case X y:) (CaseKind.Pattern) (OperationKind.PatternCaseClause) (Syntax: 'case X y:')
-                Pattern: IDeclarationPattern (Declared Symbol: X y) (OperationKind.DeclarationPattern) (Syntax: 'X y')
-                Guard Expression: null
-              IDefaultCaseClause (CaseKind.Default) (OperationKind.DefaultCaseClause) (Syntax: 'default:')
-          Body:
-              IBranchStatement (BranchKind.Break) (OperationKind.BranchStatement) (Syntax: 'break;')
+IDefaultCaseClause (CaseKind.Default) (OperationKind.DefaultCaseClause) (Syntax: 'default:')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -569,19 +452,10 @@ void M(object x)
 }
 ";
             string expectedOperationTree = @"
-ISwitchStatement (1 cases) (OperationKind.SwitchStatement, IsInvalid) (Syntax: 'switch (x.G ... }')
-  Switch expression: IInvocationExpression ( System.Type System.Object.GetType()) (OperationKind.InvocationExpression, Type: System.Type) (Syntax: 'x.GetType()')
-      Instance Receiver: IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Object) (Syntax: 'x')
-      Arguments(0)
-  Sections:
-      ISwitchCase (1 case clauses, 1 statements) (OperationKind.SwitchCase, IsInvalid) (Syntax: 'case typeof ... break;')
-          Clauses:
-              IPatternCaseClause (Label Symbol: case typeof(X):) (CaseKind.Pattern) (OperationKind.PatternCaseClause, IsInvalid) (Syntax: 'case typeof(X):')
-                Pattern: IConstantPattern (OperationKind.ConstantPattern, IsInvalid) (Syntax: 'case typeof(X):')
-                    Value: ITypeOfExpression (Type: X) (OperationKind.TypeOfExpression, Type: System.Type, IsInvalid) (Syntax: 'typeof(X)')
-                Guard Expression: null
-          Body:
-              IBranchStatement (BranchKind.Break) (OperationKind.BranchStatement) (Syntax: 'break;')
+IPatternCaseClause (Label Symbol: case typeof(X):) (CaseKind.Pattern) (OperationKind.PatternCaseClause, IsInvalid) (Syntax: 'case typeof(X):')
+  Pattern: IConstantPattern (OperationKind.ConstantPattern, IsInvalid) (Syntax: 'case typeof(X):')
+      Value: ITypeOfExpression (Type: X) (OperationKind.TypeOfExpression, Type: System.Type, IsInvalid) (Syntax: 'typeof(X)')
+  Guard Expression: null
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0150: A constant value is expected
@@ -614,16 +488,9 @@ void M(object x)
 }
 ";
             string expectedOperationTree = @"
-ISwitchStatement (1 cases) (OperationKind.SwitchStatement, IsInvalid) (Syntax: 'switch (x) ... }')
-  Switch expression: IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Object) (Syntax: 'x')
-  Sections:
-      ISwitchCase (1 case clauses, 1 statements) (OperationKind.SwitchCase, IsInvalid) (Syntax: 'case Undefi ... break;')
-          Clauses:
-              IPatternCaseClause (Label Symbol: case UndefinedType y:) (CaseKind.Pattern) (OperationKind.PatternCaseClause, IsInvalid) (Syntax: 'case UndefinedType y:')
-                Pattern: IDeclarationPattern (Declared Symbol: UndefinedType y) (OperationKind.DeclarationPattern, IsInvalid) (Syntax: 'UndefinedType y')
-                Guard Expression: null
-          Body:
-              IBranchStatement (BranchKind.Break) (OperationKind.BranchStatement) (Syntax: 'break;')
+IPatternCaseClause (Label Symbol: case UndefinedType y:) (CaseKind.Pattern) (OperationKind.PatternCaseClause, IsInvalid) (Syntax: 'case UndefinedType y:')
+  Pattern: IDeclarationPattern (Declared Symbol: UndefinedType y) (OperationKind.DeclarationPattern, IsInvalid) (Syntax: 'UndefinedType y')
+  Guard Expression: null
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0246: The type or namespace name 'UndefinedType' could not be found (are you missing a using directive or an assembly reference?)
@@ -653,16 +520,9 @@ void M(int? x)
 }
 ";
             string expectedOperationTree = @"
-ISwitchStatement (1 cases) (OperationKind.SwitchStatement, IsInvalid) (Syntax: 'switch (x) ... }')
-  Switch expression: IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Int32?) (Syntax: 'x')
-  Sections:
-      ISwitchCase (1 case clauses, 1 statements) (OperationKind.SwitchCase, IsInvalid) (Syntax: 'case X y:/* ... break;')
-          Clauses:
-              IPatternCaseClause (Label Symbol: case X y:) (CaseKind.Pattern) (OperationKind.PatternCaseClause, IsInvalid) (Syntax: 'case X y:')
-                Pattern: IDeclarationPattern (Declared Symbol: X y) (OperationKind.DeclarationPattern, IsInvalid) (Syntax: 'X y')
-                Guard Expression: null
-          Body:
-              IBranchStatement (BranchKind.Break) (OperationKind.BranchStatement) (Syntax: 'break;')
+IPatternCaseClause (Label Symbol: case X y:) (CaseKind.Pattern) (OperationKind.PatternCaseClause, IsInvalid) (Syntax: 'case X y:')
+  Pattern: IDeclarationPattern (Declared Symbol: X y) (OperationKind.DeclarationPattern, IsInvalid) (Syntax: 'X y')
+  Guard Expression: null
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS8121: An expression of type 'int?' cannot be handled by a pattern of type 'X'.
@@ -693,16 +553,9 @@ void M(int? x)
 }
 ";
             string expectedOperationTree = @"
-ISwitchStatement (1 cases) (OperationKind.SwitchStatement, IsInvalid) (Syntax: 'switch (x) ... }')
-  Switch expression: IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Int32?) (Syntax: 'x')
-  Sections:
-      ISwitchCase (1 case clauses, 1 statements) (OperationKind.SwitchCase, IsInvalid) (Syntax: 'case int y: ... break;')
-          Clauses:
-              IPatternCaseClause (Label Symbol: case int y:) (CaseKind.Pattern) (OperationKind.PatternCaseClause, IsInvalid) (Syntax: 'case int y:')
-                Pattern: IDeclarationPattern (Declared Symbol: System.Int32 y) (OperationKind.DeclarationPattern, IsInvalid) (Syntax: 'int y')
-                Guard Expression: null
-          Body:
-              IBranchStatement (BranchKind.Break) (OperationKind.BranchStatement) (Syntax: 'break;')
+IPatternCaseClause (Label Symbol: case int y:) (CaseKind.Pattern) (OperationKind.PatternCaseClause, IsInvalid) (Syntax: 'case int y:')
+  Pattern: IDeclarationPattern (Declared Symbol: System.Int32 y) (OperationKind.DeclarationPattern, IsInvalid) (Syntax: 'int y')
+  Guard Expression: null
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0136: A local or parameter named 'y' cannot be declared in this scope because that name is used in an enclosing local scope to define a local or parameter
@@ -735,20 +588,9 @@ void M(int? x)
 }
 ";
             string expectedOperationTree = @"
-ISwitchStatement (1 cases) (OperationKind.SwitchStatement, IsInvalid) (Syntax: 'switch (x) ... }')
-  Switch expression: IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Int32?) (Syntax: 'x')
-  Sections:
-      ISwitchCase (1 case clauses, 2 statements) (OperationKind.SwitchCase, IsInvalid) (Syntax: 'case /*</bi ... break;')
-          Clauses:
-              ISingleValueCaseClause (CaseKind.SingleValue) (OperationKind.SingleValueCaseClause, IsInvalid) (Syntax: 'case /*</bind>*/')
-                Value: IInvalidExpression (OperationKind.InvalidExpression, Type: null, IsInvalid) (Syntax: '')
-                    Children(0)
-          Body:
-              IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'const int y')
-                IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'const int y')
-                  Variables: Local_1: System.Int32 y
-                  Initializer: null
-              IBranchStatement (BranchKind.Break) (OperationKind.BranchStatement) (Syntax: 'break;')
+ISingleValueCaseClause (CaseKind.SingleValue) (OperationKind.SingleValueCaseClause, IsInvalid) (Syntax: 'case /*</bind>*/')
+  Value: IInvalidExpression (OperationKind.InvalidExpression, Type: null, IsInvalid) (Syntax: '')
+      Children(0)
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS1525: Invalid expression term 'const'
diff --git a/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_ITupleExpression.cs b/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_ITupleExpression.cs
index a69def121fc0f3e81dfb702e5484ab4420689c4c..09465dc70a41c6f06eadbb6ce628c8a26c3aebd4 100644
--- a/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_ITupleExpression.cs
+++ b/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_ITupleExpression.cs
@@ -48,14 +48,14 @@ class C
 {
     static void Main()
     {
-        /*<bind>*/(int, int) t = (1, 2)/*</bind>*/;
+        /*<bind>*/(int, int) t = (1, 2);/*</bind>*/
         Console.WriteLine(t);
     }
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: '(int, int)  ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: '(int, int)  ... *</bind>*/;')
+IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: '(int, int) t = (1, 2);')
+  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 't = (1, 2)')
     Variables: Local_1: (System.Int32, System.Int32) t
     Initializer: ITupleExpression (OperationKind.TupleExpression, Type: (System.Int32, System.Int32)) (Syntax: '(1, 2)')
         Elements(2):
@@ -64,7 +64,7 @@ static void Main()
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
-            VerifyOperationTreeAndDiagnosticsForTest<VariableDeclarationSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         [CompilerTrait(CompilerFeature.IOperation)]
@@ -109,14 +109,14 @@ class C
 {
     static void Main()
     {
-        /*<bind>*/(uint, uint) t = (1, 2)/*</bind>*/;
+        /*<bind>*/(uint, uint) t = (1, 2);/*</bind>*/
         Console.WriteLine(t);
     }
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: '(uint, uint ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: '(uint, uint ... *</bind>*/;')
+IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: '(uint, uint) t = (1, 2);')
+  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 't = (1, 2)')
     Variables: Local_1: (System.UInt32, System.UInt32) t
     Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: (System.UInt32, System.UInt32)) (Syntax: '(1, 2)')
         Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
@@ -131,7 +131,7 @@ static void Main()
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
-            VerifyOperationTreeAndDiagnosticsForTest<VariableDeclarationSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         [CompilerTrait(CompilerFeature.IOperation)]
@@ -180,14 +180,14 @@ static void Main()
     {
         int a = 1;
         int b = 2;
-        /*<bind>*/(long, long) t = (a, b)/*</bind>*/;
+        /*<bind>*/(long, long) t = (a, b);/*</bind>*/
         Console.WriteLine(t);
     }
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: '(long, long ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: '(long, long ... *</bind>*/;')
+IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: '(long, long) t = (a, b);')
+  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 't = (a, b)')
     Variables: Local_1: (System.Int64, System.Int64) t
     Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: (System.Int64, System.Int64)) (Syntax: '(a, b)')
         Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
@@ -202,7 +202,7 @@ static void Main()
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
-            VerifyOperationTreeAndDiagnosticsForTest<VariableDeclarationSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         [CompilerTrait(CompilerFeature.IOperation)]
@@ -247,14 +247,14 @@ class C
 {
     static void Main()
     {
-        /*<bind>*/(uint, string) t = (1, null)/*</bind>*/;
+        /*<bind>*/(uint, string) t = (1, null);/*</bind>*/
         Console.WriteLine(t);
     }
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: '(uint, stri ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: '(uint, stri ... *</bind>*/;')
+IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: '(uint, stri ...  (1, null);')
+  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 't = (1, null)')
     Variables: Local_1: (System.UInt32, System.String) t
     Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: (System.UInt32, System.String)) (Syntax: '(1, null)')
         Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
@@ -269,7 +269,7 @@ static void Main()
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
-            VerifyOperationTreeAndDiagnosticsForTest<VariableDeclarationSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         [CompilerTrait(CompilerFeature.IOperation)]
@@ -310,14 +310,14 @@ class C
 {
     static void Main()
     {
-        /*<bind>*/var t = (A: 1, B: 2)/*</bind>*/;
+        /*<bind>*/var t = (A: 1, B: 2);/*</bind>*/
         Console.WriteLine(t);
     }
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'var t = (A: ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'var t = (A: ... *</bind>*/;')
+IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'var t = (A: 1, B: 2);')
+  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 't = (A: 1, B: 2)')
     Variables: Local_1: (System.Int32 A, System.Int32 B) t
     Initializer: ITupleExpression (OperationKind.TupleExpression, Type: (System.Int32 A, System.Int32 B)) (Syntax: '(A: 1, B: 2)')
         Elements(2):
@@ -326,7 +326,7 @@ static void Main()
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
-            VerifyOperationTreeAndDiagnosticsForTest<VariableDeclarationSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         [CompilerTrait(CompilerFeature.IOperation)]
@@ -367,14 +367,14 @@ class C
 {
     static void Main()
     {
-        /*<bind>*/(int A, int B) t = (1, 2)/*</bind>*/;
+        /*<bind>*/(int A, int B) t = (1, 2);/*</bind>*/
         Console.WriteLine(t);
     }
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: '(int A, int ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: '(int A, int ... *</bind>*/;')
+IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: '(int A, int ... t = (1, 2);')
+  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 't = (1, 2)')
     Variables: Local_1: (System.Int32 A, System.Int32 B) t
     Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: (System.Int32 A, System.Int32 B)) (Syntax: '(1, 2)')
         Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
@@ -385,7 +385,7 @@ static void Main()
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
-            VerifyOperationTreeAndDiagnosticsForTest<VariableDeclarationSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         [CompilerTrait(CompilerFeature.IOperation)]
@@ -437,14 +437,14 @@ class C
 {
     static void Main()
     {
-        /*<bind>*/(short, string) t = (A: 1, B: null)/*</bind>*/;
+        /*<bind>*/(short, string) t = (A: 1, B: null);/*</bind>*/
         Console.WriteLine(t);
     }
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: '(short, str ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: '(short, str ... *</bind>*/;')
+IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: '(short, str ... , B: null);')
+  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 't = (A: 1, B: null)')
     Variables: Local_1: (System.Int16, System.String) t
     Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: (System.Int16, System.String)) (Syntax: '(A: 1, B: null)')
         Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
@@ -466,7 +466,7 @@ static void Main()
                 Diagnostic(ErrorCode.WRN_TupleLiteralNameMismatch, "B: null").WithArguments("B", "(short, string)").WithLocation(8, 46)
             };
 
-            VerifyOperationTreeAndDiagnosticsForTest<VariableDeclarationSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         [CompilerTrait(CompilerFeature.IOperation)]
@@ -559,14 +559,14 @@ public C(int x)
 
     public void M(C c1)
     {
-        /*<bind>*/(short, string) t = (new C(0), c1)/*</bind>*/;
+        /*<bind>*/(short, string) t = (new C(0), c1);/*</bind>*/
         Console.WriteLine(t);
     }
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: '(short, str ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: '(short, str ... *</bind>*/;')
+IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: '(short, str ...  C(0), c1);')
+  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 't = (new C(0), c1)')
     Variables: Local_1: (System.Int16, System.String) t
     Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: (System.Int16, System.String)) (Syntax: '(new C(0), c1)')
         Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
@@ -587,7 +587,7 @@ public void M(C c1)
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
-            VerifyOperationTreeAndDiagnosticsForTest<VariableDeclarationSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         [CompilerTrait(CompilerFeature.IOperation)]
@@ -662,14 +662,14 @@ public static implicit operator (int, string) (C c)
 
     public void M(C c1)
     {
-        /*<bind>*/C t = (0, null)/*</bind>*/;
+        /*<bind>*/C t = (0, null);/*</bind>*/
         Console.WriteLine(t);
     }
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'C t = (0, n ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'C t = (0, n ... *</bind>*/;')
+IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'C t = (0, null);')
+  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 't = (0, null)')
     Variables: Local_1: C t
     Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperatorMethod: C C.op_Implicit((System.Int32, System.String) x)) (OperationKind.ConversionExpression, Type: C) (Syntax: '(0, null)')
         Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: True) (MethodSymbol: C C.op_Implicit((System.Int32, System.String) x))
@@ -684,7 +684,7 @@ public void M(C c1)
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
-            VerifyOperationTreeAndDiagnosticsForTest<VariableDeclarationSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         [CompilerTrait(CompilerFeature.IOperation)]
@@ -754,14 +754,14 @@ public static implicit operator (int, string) (C c)
 
     public void M(C c1)
     {
-        /*<bind>*/(int, string) t = c1/*</bind>*/;
+        /*<bind>*/(int, string) t = c1;/*</bind>*/
         Console.WriteLine(t);
     }
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: '(int, strin ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: '(int, strin ... *</bind>*/;')
+IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: '(int, string) t = c1;')
+  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 't = c1')
     Variables: Local_1: (System.Int32, System.String) t
     Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperatorMethod: (System.Int32, System.String) C.op_Implicit(C c)) (OperationKind.ConversionExpression, Type: (System.Int32, System.String)) (Syntax: 'c1')
         Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: True) (MethodSymbol: (System.Int32, System.String) C.op_Implicit(C c))
@@ -769,7 +769,7 @@ public void M(C c1)
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
-            VerifyOperationTreeAndDiagnosticsForTest<VariableDeclarationSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         [CompilerTrait(CompilerFeature.IOperation)]
@@ -862,14 +862,14 @@ public C(int x)
 
     public void M(C c1)
     {
-        /*<bind>*/(short, string) t = (new C(0), c1)/*</bind>*/;
+        /*<bind>*/(short, string) t = (new C(0), c1);/*</bind>*/
         Console.WriteLine(t);
     }
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: '(short, str ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: '(short, str ... *</bind>*/;')
+IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: '(short, str ...  C(0), c1);')
+  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 't = (new C(0), c1)')
     Variables: Local_1: (System.Int16, System.String) t
     Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: (System.Int16, System.String), IsInvalid) (Syntax: '(new C(0), c1)')
         Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
@@ -890,7 +890,7 @@ public void M(C c1)
                 Diagnostic(ErrorCode.ERR_NoImplicitConv, "new C(0)").WithArguments("C", "short").WithLocation(29, 40)
             };
 
-            VerifyOperationTreeAndDiagnosticsForTest<VariableDeclarationSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         [CompilerTrait(CompilerFeature.IOperation)]
diff --git a/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IVariableDeclaration.cs b/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IVariableDeclaration.cs
index 6c16ffcd1f580d845348f5c3588fe34460b55bd1..3c440cee166c350ff2167d2002b4862f98c8d895 100644
--- a/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IVariableDeclaration.cs
+++ b/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IVariableDeclaration.cs
@@ -26,7 +26,7 @@ static void Main(string[] args)
 ";
             string expectedOperationTree = @"
 IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'int i1;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'int i1;')
+  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i1')
     Variables: Local_1: System.Int32 i1
     Initializer: null
 ";
@@ -54,7 +54,7 @@ static void Main(string[] args)
 ";
             string expectedOperationTree = @"
 IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'int i1 = 1;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'int i1 = 1;')
+  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i1 = 1')
     Variables: Local_1: System.Int32 i1
     Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1) (Syntax: '1')
 ";
@@ -82,7 +82,7 @@ static void Main(string[] args)
 ";
             string expectedOperationTree = @"
 IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'int i1 = ;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'int i1 = ;')
+  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'i1 = ')
     Variables: Local_1: System.Int32 i1
     Initializer: IInvalidExpression (OperationKind.InvalidExpression, Type: null, IsInvalid) (Syntax: '')
         Children(0)
@@ -139,12 +139,12 @@ class Program
 {
     static void Main(string[] args)
     {
-        /*<bind>*/int i1 = 2, i2 = 2/*</bind>*/;
+        /*<bind>*/int i1 = 2, i2 = 2;/*</bind>*/
     }
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (2 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'int i1 = 2, ... *</bind>*/;')
+IVariableDeclarationStatement (2 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'int i1 = 2, i2 = 2;')
   IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i1 = 2')
     Variables: Local_1: System.Int32 i1
     Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 2) (Syntax: '2')
@@ -161,7 +161,7 @@ static void Main(string[] args)
                 Diagnostic(ErrorCode.WRN_UnreferencedVarAssg, "i2").WithArguments("i2").WithLocation(6, 31)
             };
 
-            VerifyOperationTreeAndDiagnosticsForTest<VariableDeclarationSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         [CompilerTrait(CompilerFeature.IOperation)]
@@ -173,12 +173,12 @@ class Program
 {
     static void Main(string[] args)
     {
-        /*<bind>*/int i1 = , i2 = 2/*</bind>*/;
+        /*<bind>*/int i1 = , i2 = 2;/*</bind>*/
     }
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (2 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'int i1 = ,  ... *</bind>*/;')
+IVariableDeclarationStatement (2 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'int i1 = , i2 = 2;')
   IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'i1 = ')
     Variables: Local_1: System.Int32 i1
     Initializer: IInvalidExpression (OperationKind.InvalidExpression, Type: null, IsInvalid) (Syntax: '')
@@ -196,7 +196,7 @@ static void Main(string[] args)
                 Diagnostic(ErrorCode.WRN_UnreferencedVarAssg, "i2").WithArguments("i2").WithLocation(6, 30)
             };
 
-            VerifyOperationTreeAndDiagnosticsForTest<VariableDeclarationSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         [CompilerTrait(CompilerFeature.IOperation)]
@@ -208,12 +208,12 @@ class Program
 {
     static void Main(string[] args)
     {
-        /*<bind>*/int i,/*</bind>*/;
+        /*<bind>*/int i,;/*</bind>*/
     }
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (2 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'int i,/*</bind>*/;')
+IVariableDeclarationStatement (2 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'int i,;')
   IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i')
     Variables: Local_1: System.Int32 i
     Initializer: null
@@ -224,13 +224,13 @@ static void Main(string[] args)
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS1001: Identifier expected
                 //         /*<bind>*/int i,/*</bind>*/;
-                Diagnostic(ErrorCode.ERR_IdentifierExpected, ";").WithLocation(6, 36),
+                Diagnostic(ErrorCode.ERR_IdentifierExpected, ";").WithLocation(6, 25),
                 // CS0168: The variable 'i' is declared but never used
                 //         /*<bind>*/int i,/*</bind>*/;
                 Diagnostic(ErrorCode.WRN_UnreferencedVar, "i").WithArguments("i").WithLocation(6, 23)
             };
 
-            VerifyOperationTreeAndDiagnosticsForTest<VariableDeclarationSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         [CompilerTrait(CompilerFeature.IOperation)]
@@ -242,15 +242,15 @@ class Program
 {
     static void Main(string[] args)
     {
-        /*<bind>*/int i = GetInt()/*</bind>*/;
+        /*<bind>*/int i = GetInt();/*</bind>*/
     }
 
     static int GetInt() => 1;
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'int i = Get ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'int i = Get ... *</bind>*/;')
+IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'int i = GetInt();')
+  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = GetInt()')
     Variables: Local_1: System.Int32 i
     Initializer: IInvocationExpression (System.Int32 Program.GetInt()) (OperationKind.InvocationExpression, Type: System.Int32) (Syntax: 'GetInt()')
         Instance Receiver: null
@@ -258,7 +258,7 @@ static void Main(string[] args)
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
-            VerifyOperationTreeAndDiagnosticsForTest<VariableDeclarationSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         [CompilerTrait(CompilerFeature.IOperation)]
@@ -270,14 +270,14 @@ class Program
 {
     static void Main(string[] args)
     {
-        /*<bind>*/int i = GetInt(), j = GetInt()/*</bind>*/;
+        /*<bind>*/int i = GetInt(), j = GetInt();/*</bind>*/
     }
 
     static int GetInt() => 1;
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (2 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'int i = Get ... *</bind>*/;')
+IVariableDeclarationStatement (2 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'int i = Get ... = GetInt();')
   IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = GetInt()')
     Variables: Local_1: System.Int32 i
     Initializer: IInvocationExpression (System.Int32 Program.GetInt()) (OperationKind.InvocationExpression, Type: System.Int32) (Syntax: 'GetInt()')
@@ -291,7 +291,7 @@ static void Main(string[] args)
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
-            VerifyOperationTreeAndDiagnosticsForTest<VariableDeclarationSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         [CompilerTrait(CompilerFeature.IOperation)]
@@ -304,21 +304,21 @@ class Program
     static void Main(string[] args)
     {
         int i = 1;
-        /*<bind>*/int i1 = i/*</bind>*/;
+        /*<bind>*/int i1 = i;/*</bind>*/
     }
 
     static int GetInt() => 1;
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'int i1 = i/*</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'int i1 = i/*</bind>*/;')
+IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'int i1 = i;')
+  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i1 = i')
     Variables: Local_1: System.Int32 i1
     Initializer: ILocalReferenceExpression: i (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'i')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
-            VerifyOperationTreeAndDiagnosticsForTest<VariableDeclarationSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         [CompilerTrait(CompilerFeature.IOperation)]
@@ -331,14 +331,14 @@ class Program
     static void Main(string[] args)
     {
         int i = 1;
-        /*<bind>*/int i1 = i, i2 = i1/*</bind>*/;
+        /*<bind>*/int i1 = i, i2 = i1;/*</bind>*/
     }
 
     static int GetInt() => 1;
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (2 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'int i1 = i, ... *</bind>*/;')
+IVariableDeclarationStatement (2 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'int i1 = i, i2 = i1;')
   IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i1 = i')
     Variables: Local_1: System.Int32 i1
     Initializer: ILocalReferenceExpression: i (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'i')
@@ -348,7 +348,7 @@ static void Main(string[] args)
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
-            VerifyOperationTreeAndDiagnosticsForTest<VariableDeclarationSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         [CompilerTrait(CompilerFeature.IOperation)]
@@ -360,13 +360,13 @@ class Program
 {
     static void Main(string[] args)
     {
-        /*<bind>*/int[2, 3] a/*</bind>*/;
+        /*<bind>*/int[2, 3] a;/*</bind>*/
     }
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'int[2, 3] a/*</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'int[2, 3] a/*</bind>*/;')
+IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'int[2, 3] a;')
+  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'a')
     Variables: Local_1: System.Int32[,] a
     Initializer: null
 ";
@@ -382,7 +382,7 @@ static void Main(string[] args)
                 Diagnostic(ErrorCode.WRN_UnreferencedVar, "a").WithArguments("a").WithLocation(6, 29)
             };
 
-            VerifyOperationTreeAndDiagnosticsForTest<VariableDeclarationSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         [CompilerTrait(CompilerFeature.IOperation)]
@@ -394,12 +394,12 @@ class Program
 {
     static void Main(string[] args)
     {
-        /*<bind>*/int[2, 3] a, b/*</bind>*/;
+        /*<bind>*/int[2, 3] a, b;/*</bind>*/
     }
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (2 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'int[2, 3] a ... *</bind>*/;')
+IVariableDeclarationStatement (2 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'int[2, 3] a, b;')
   IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'a')
     Variables: Local_1: System.Int32[,] a
     Initializer: null
@@ -422,7 +422,7 @@ static void Main(string[] args)
                 Diagnostic(ErrorCode.WRN_UnreferencedVar, "b").WithArguments("b").WithLocation(6, 32)
             };
 
-            VerifyOperationTreeAndDiagnosticsForTest<VariableDeclarationSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         #endregion
@@ -1450,7 +1450,7 @@ static void Main(string[] args)
 ";
             string expectedOperationTree = @"
 IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'const int i1 = 1;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'const int i1 = 1;')
+  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i1 = 1')
     Variables: Local_1: System.Int32 i1
     Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1) (Syntax: '1')
 ";
@@ -1509,24 +1509,24 @@ class Program
 {
     static void Main(string[] args)
     {
-        const /*<bind>*/int i1 = /*</bind>*/;
+        /*<bind>*/const int i1 = ;/*</bind>*/
     }
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'const /*<bi ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'const /*<bi ... *</bind>*/;')
+IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'const int i1 = ;')
+  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'i1 = ')
     Variables: Local_1: System.Int32 i1
     Initializer: IInvalidExpression (OperationKind.InvalidExpression, Type: null, IsInvalid) (Syntax: '')
         Children(0)
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS1525: Invalid expression term ';'
-                //         const /*<bind>*/int i1 = /*</bind>*/;
-                Diagnostic(ErrorCode.ERR_InvalidExprTerm, ";").WithArguments(";").WithLocation(6, 45)
+                //         /*<bind>*/const int i1 = ;/*</bind>*/
+                Diagnostic(ErrorCode.ERR_InvalidExprTerm, ";").WithArguments(";").WithLocation(6, 34)
             };
 
-            VerifyOperationTreeAndDiagnosticsForTest<VariableDeclarationSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         [CompilerTrait(CompilerFeature.IOperation)]
@@ -1538,17 +1538,17 @@ class Program
 {
     static void Main(string[] args)
     {
-        const /*<bind>*/int i1 = , i2 = /*</bind>*/;
+        /*<bind>*/const int i1 = , i2 = ;/*</bind>*/
     }
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (2 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'const /*<bi ... *</bind>*/;')
+IVariableDeclarationStatement (2 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'const int i1 = , i2 = ;')
   IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'i1 = ')
     Variables: Local_1: System.Int32 i1
     Initializer: IInvalidExpression (OperationKind.InvalidExpression, Type: null, IsInvalid) (Syntax: '')
         Children(0)
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'i2 = /*</bind>*/')
+  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'i2 = ')
     Variables: Local_1: System.Int32 i2
     Initializer: IInvalidExpression (OperationKind.InvalidExpression, Type: null, IsInvalid) (Syntax: '')
         Children(0)
@@ -1559,10 +1559,10 @@ static void Main(string[] args)
                 Diagnostic(ErrorCode.ERR_InvalidExprTerm, ",").WithArguments(",").WithLocation(6, 34),
                 // CS1525: Invalid expression term ';'
                 //         const /*<bind>*/int i1 = , i2 = /*</bind>*/;
-                Diagnostic(ErrorCode.ERR_InvalidExprTerm, ";").WithArguments(";").WithLocation(6, 52)
+                Diagnostic(ErrorCode.ERR_InvalidExprTerm, ";").WithArguments(";").WithLocation(6, 41)
             };
 
-            VerifyOperationTreeAndDiagnosticsForTest<VariableDeclarationSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         [CompilerTrait(CompilerFeature.IOperation)]
@@ -1574,13 +1574,13 @@ class Program
 {
     static void Main(string[] args)
     {
-        const /*<bind>*/int i1/*</bind>*/;
+        /*<bind>*/const int i1;/*</bind>*/
     }
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'const /*<bi ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'const /*<bi ... *</bind>*/;')
+IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'const int i1;')
+  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'i1')
     Variables: Local_1: System.Int32 i1
     Initializer: null
 ";
@@ -1593,7 +1593,7 @@ static void Main(string[] args)
                 Diagnostic(ErrorCode.WRN_UnreferencedVar, "i1").WithArguments("i1").WithLocation(6, 29)
             };
 
-            VerifyOperationTreeAndDiagnosticsForTest<VariableDeclarationSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         [CompilerTrait(CompilerFeature.IOperation)]
@@ -1605,12 +1605,12 @@ class Program
 {
     static void Main(string[] args)
     {
-        const /*<bind>*/int i1, i2/*</bind>*/;
+        /*<bind>*/const int i1, i2;/*</bind>*/
     }
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (2 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'const /*<bi ... *</bind>*/;')
+IVariableDeclarationStatement (2 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'const int i1, i2;')
   IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'i1')
     Variables: Local_1: System.Int32 i1
     Initializer: null
@@ -1633,7 +1633,7 @@ static void Main(string[] args)
                 Diagnostic(ErrorCode.WRN_UnreferencedVar, "i2").WithArguments("i2").WithLocation(6, 33)
             };
 
-            VerifyOperationTreeAndDiagnosticsForTest<VariableDeclarationSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         [CompilerTrait(CompilerFeature.IOperation)]
@@ -1645,12 +1645,12 @@ class Program
 {
     static void Main(string[] args)
     {
-        const /*<bind>*/int i1,/*</bind>*/;
+        /*<bind>*/const int i1,;/*</bind>*/
     }
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (2 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'const /*<bi ... *</bind>*/;')
+IVariableDeclarationStatement (2 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'const int i1,;')
   IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'i1')
     Variables: Local_1: System.Int32 i1
     Initializer: null
@@ -1664,16 +1664,16 @@ static void Main(string[] args)
                 Diagnostic(ErrorCode.ERR_ConstValueRequired, "i1").WithLocation(6, 29),
                 // CS1001: Identifier expected
                 //         const /*<bind>*/int i1,/*</bind>*/;
-                Diagnostic(ErrorCode.ERR_IdentifierExpected, ";").WithLocation(6, 43),
+                Diagnostic(ErrorCode.ERR_IdentifierExpected, ";").WithLocation(6, 32),
                 // CS0145: A const field requires a value to be provided
                 //         const /*<bind>*/int i1,/*</bind>*/;
-                Diagnostic(ErrorCode.ERR_ConstValueRequired, ";").WithLocation(6, 43),
+                Diagnostic(ErrorCode.ERR_ConstValueRequired, ";").WithLocation(6, 32),
                 // CS0168: The variable 'i1' is declared but never used
                 //         const /*<bind>*/int i1,/*</bind>*/;
                 Diagnostic(ErrorCode.WRN_UnreferencedVar, "i1").WithArguments("i1").WithLocation(6, 29)
             };
 
-            VerifyOperationTreeAndDiagnosticsForTest<VariableDeclarationSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         [CompilerTrait(CompilerFeature.IOperation)]
@@ -1685,15 +1685,15 @@ class Program
 {
     static void Main(string[] args)
     {
-        const /*<bind>*/int i1 = GetInt()/*</bind>*/;
+        /*<bind>*/const int i1 = GetInt();/*</bind>*/
     }
 
     static int GetInt() => 1;
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'const /*<bi ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'const /*<bi ... *</bind>*/;')
+IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'const int i1 = GetInt();')
+  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'i1 = GetInt()')
     Variables: Local_1: System.Int32 i1
     Initializer: IInvocationExpression (System.Int32 Program.GetInt()) (OperationKind.InvocationExpression, Type: System.Int32, IsInvalid) (Syntax: 'GetInt()')
         Instance Receiver: null
@@ -1705,7 +1705,7 @@ static void Main(string[] args)
                 Diagnostic(ErrorCode.ERR_NotConstantExpression, "GetInt()").WithArguments("i1").WithLocation(6, 34)
             };
 
-            VerifyOperationTreeAndDiagnosticsForTest<VariableDeclarationSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         [CompilerTrait(CompilerFeature.IOperation)]
@@ -1717,14 +1717,14 @@ class Program
 {
     static void Main(string[] args)
     {
-        const /*<bind>*/int i1 = GetInt(), i2 = GetInt()/*</bind>*/;
+        /*<bind>*/const int i1 = GetInt(), i2 = GetInt();/*</bind>*/
     }
 
     static int GetInt() => 1;
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (2 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'const /*<bi ... *</bind>*/;')
+IVariableDeclarationStatement (2 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'const int i ... = GetInt();')
   IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'i1 = GetInt()')
     Variables: Local_1: System.Int32 i1
     Initializer: IInvocationExpression (System.Int32 Program.GetInt()) (OperationKind.InvocationExpression, Type: System.Int32, IsInvalid) (Syntax: 'GetInt()')
@@ -1745,7 +1745,7 @@ static void Main(string[] args)
                 Diagnostic(ErrorCode.ERR_NotConstantExpression, "GetInt()").WithArguments("i2").WithLocation(6, 49)
             };
 
-            VerifyOperationTreeAndDiagnosticsForTest<VariableDeclarationSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         [CompilerTrait(CompilerFeature.IOperation)]
@@ -1758,15 +1758,15 @@ class Program
     static void Main(string[] args)
     {
         const int i = 1;
-        const /*<bind>*/int i1 = i/*</bind>*/;
+        /*<bind>*/const int i1 = i;/*</bind>*/
     }
 
     static int GetInt() => 1;
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'const /*<bi ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'const /*<bi ... *</bind>*/;')
+IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'const int i1 = i;')
+  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i1 = i')
     Variables: Local_1: System.Int32 i1
     Initializer: ILocalReferenceExpression: i (OperationKind.LocalReferenceExpression, Type: System.Int32, Constant: 1) (Syntax: 'i')
 ";
@@ -1776,7 +1776,7 @@ static void Main(string[] args)
                 Diagnostic(ErrorCode.WRN_UnreferencedVarAssg, "i1").WithArguments("i1").WithLocation(7, 29)
             };
 
-            VerifyOperationTreeAndDiagnosticsForTest<VariableDeclarationSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         [CompilerTrait(CompilerFeature.IOperation)]
@@ -1789,14 +1789,14 @@ class Program
     static void Main(string[] args)
     {
         const int i = 1;
-        const /*<bind>*/int i1 = i, i2 = i1/*</bind>*/;
+        /*<bind>*/const int i1 = i, i2 = i1;/*</bind>*/
     }
 
     static int GetInt() => 1;
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (2 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'const /*<bi ... *</bind>*/;')
+IVariableDeclarationStatement (2 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'const int i ... i, i2 = i1;')
   IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i1 = i')
     Variables: Local_1: System.Int32 i1
     Initializer: ILocalReferenceExpression: i (OperationKind.LocalReferenceExpression, Type: System.Int32, Constant: 1) (Syntax: 'i')
@@ -1810,7 +1810,7 @@ static void Main(string[] args)
                 Diagnostic(ErrorCode.WRN_UnreferencedVarAssg, "i2").WithArguments("i2").WithLocation(7, 37)
             };
 
-            VerifyOperationTreeAndDiagnosticsForTest<VariableDeclarationSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         #endregion
diff --git a/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IWhileUntilLoopStatement.cs b/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IWhileUntilLoopStatement.cs
index 8843afba1a12495cd4c2df33a4e07ef73dbfef66..35160386039ae7c4185542d2d9573ba23a5558ed 100644
--- a/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IWhileUntilLoopStatement.cs
+++ b/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IWhileUntilLoopStatement.cs
@@ -1,4 +1,4 @@
-// Copyright (c) Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information.
+// Copyright (c) Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information.
 
 using Microsoft.CodeAnalysis.CSharp.Syntax;
 using Microsoft.CodeAnalysis.Test.Utilities;
@@ -122,7 +122,7 @@ static void Main()
   Body: IBlockStatement (2 statements, 1 locals) (OperationKind.BlockStatement) (Syntax: '{ ... }')
       Locals: Local_1: System.Int32 value
       IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'int value = ++index;')
-        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'int value = ++index;')
+        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'value = ++index')
           Variables: Local_1: System.Int32 value
           Initializer: IIncrementExpression (PrefixIncrement) (OperationKind.IncrementExpression, Type: System.Int32) (Syntax: '++index')
               Target: ILocalReferenceExpression: index (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'index')
@@ -171,7 +171,7 @@ static void Main()
   Body: IBlockStatement (3 statements, 1 locals) (OperationKind.BlockStatement) (Syntax: '{ ... }')
       Locals: Local_1: System.Int32 value
       IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'int value = ++index;')
-        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'int value = ++index;')
+        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'value = ++index')
           Variables: Local_1: System.Int32 value
           Initializer: IIncrementExpression (PrefixIncrement) (OperationKind.IncrementExpression, Type: System.Int32) (Syntax: '++index')
               Target: ILocalReferenceExpression: index (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'index')
@@ -232,7 +232,7 @@ static void Main()
   Body: IBlockStatement (3 statements, 1 locals) (OperationKind.BlockStatement) (Syntax: '{ ... }')
       Locals: Local_1: System.Int32 value
       IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'int value = ++index;')
-        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'int value = ++index;')
+        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'value = ++index')
           Variables: Local_1: System.Int32 value
           Initializer: IIncrementExpression (PrefixIncrement) (OperationKind.IncrementExpression, Type: System.Int32) (Syntax: '++index')
               Target: ILocalReferenceExpression: index (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'index')
@@ -470,7 +470,7 @@ static void Main()
   Body: IBlockStatement (2 statements, 1 locals) (OperationKind.BlockStatement) (Syntax: '{ ... }')
       Locals: Local_1: System.Int32 value
       IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'int value = ++index;')
-        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'int value = ++index;')
+        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'value = ++index')
           Variables: Local_1: System.Int32 value
           Initializer: IIncrementExpression (PrefixIncrement) (OperationKind.IncrementExpression, Type: System.Int32) (Syntax: '++index')
               Target: ILocalReferenceExpression: index (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'index')
@@ -600,7 +600,7 @@ static void Main()
         Expression: IIncrementExpression (PostfixIncrement) (OperationKind.IncrementExpression, Type: System.Int32) (Syntax: 'i++')
             Target: ILocalReferenceExpression: i (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'i')
       IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'int j = 0;')
-        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'int j = 0;')
+        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'j = 0')
           Variables: Local_1: System.Int32 j
           Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
       IWhileUntilLoopStatement (IsTopTest: True, IsWhile: True) (LoopKind.WhileUntil) (OperationKind.LoopStatement) (Syntax: 'while (j <  ... }')
@@ -667,7 +667,7 @@ static void Main()
         Expression: IIncrementExpression (PostfixIncrement) (OperationKind.IncrementExpression, Type: System.Int32) (Syntax: 'i++')
             Target: ILocalReferenceExpression: i (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'i')
       IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'int j = 0;')
-        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'int j = 0;')
+        IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'j = 0')
           Variables: Local_1: System.Int32 j
           Initializer: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
       IWhileUntilLoopStatement (IsTopTest: True, IsWhile: True) (LoopKind.WhileUntil) (OperationKind.LoopStatement) (Syntax: 'while (j <  ... }')
diff --git a/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_InvalidExpression.cs b/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_InvalidExpression.cs
index 280e9c0760925d67467fdc5706410ef52683b964..0259fbf563ac28d9874fbd7a98c5c4d36d622efa 100644
--- a/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_InvalidExpression.cs
+++ b/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_InvalidExpression.cs
@@ -124,7 +124,7 @@ class Program
     static void Main(string[] args)
     {
         var x = new Program();
-        var y /*<bind>*/= x.MissingField/*</bind>*/;
+        var /*<bind>*/y = x.MissingField/*</bind>*/;
     }
 
     void F()
@@ -133,12 +133,11 @@ void F()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'var y /*<bi ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'var y /*<bi ... *</bind>*/;')
-    Variables: Local_1: ? y
-    Initializer: IInvalidExpression (OperationKind.InvalidExpression, Type: ?, IsInvalid) (Syntax: 'x.MissingField')
-        Children(1):
-            ILocalReferenceExpression: x (OperationKind.LocalReferenceExpression, Type: Program) (Syntax: 'x')
+IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'y = x.MissingField')
+  Variables: Local_1: ? y
+  Initializer: IInvalidExpression (OperationKind.InvalidExpression, Type: ?, IsInvalid) (Syntax: 'x.MissingField')
+      Children(1):
+          ILocalReferenceExpression: x (OperationKind.LocalReferenceExpression, Type: Program) (Syntax: 'x')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS1061: 'Program' does not contain a definition for 'MissingField' and no extension method 'MissingField' accepting a first argument of type 'Program' could be found (are you missing a using directive or an assembly reference?)
@@ -146,7 +145,7 @@ void F()
                 Diagnostic(ErrorCode.ERR_NoSuchMemberOrExtension, "MissingField").WithArguments("Program", "MissingField").WithLocation(9, 29)
             };
 
-            VerifyOperationTreeAndDiagnosticsForTest<EqualsValueClauseSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<VariableDeclaratorSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         [CompilerTrait(CompilerFeature.IOperation)]
@@ -162,7 +161,7 @@ class Program
     static void Main(string[] args)
     {
         var x = new Program();
-        string y /*<bind>*/= x.i1/*</bind>*/;
+        /*<bind>*/string y = x.i1;/*</bind>*/
     }
 
     void F()
@@ -171,8 +170,8 @@ void F()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'string y /* ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'string y /* ... *</bind>*/;')
+IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'string y = x.i1;')
+  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'y = x.i1')
     Variables: Local_1: System.String y
     Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.String, IsInvalid) (Syntax: 'x.i1')
         Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
@@ -188,7 +187,7 @@ void F()
                 Diagnostic(ErrorCode.WRN_UnassignedInternalField, "i1").WithArguments("Program.i1", "0").WithLocation(6, 9)
             };
 
-            VerifyOperationTreeAndDiagnosticsForTest<EqualsValueClauseSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         [CompilerTrait(CompilerFeature.IOperation)]
@@ -204,7 +203,7 @@ class Program
     static void Main(string[] args)
     {
         var x = new Program();
-        Program y /*<bind>*/= (Program)x.i1/*</bind>*/;
+        /*<bind>*/Program y = (Program)x.i1;/*</bind>*/
     }
 
     void F()
@@ -213,8 +212,8 @@ void F()
 }
 ";
             string expectedOperationTree = @"
-IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'Program y / ... *</bind>*/;')
-  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'Program y / ... *</bind>*/;')
+IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'Program y = ... ogram)x.i1;')
+  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'y = (Program)x.i1')
     Variables: Local_1: Program y
     Initializer: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: Program, IsInvalid) (Syntax: '(Program)x.i1')
         Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
@@ -230,7 +229,7 @@ void F()
                 Diagnostic(ErrorCode.WRN_UnassignedInternalField, "i1").WithArguments("Program.i1", "0").WithLocation(6, 9)
             };
 
-            VerifyOperationTreeAndDiagnosticsForTest<EqualsValueClauseSyntax>(source, expectedOperationTree, expectedDiagnostics);
+            VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
         }
 
         [CompilerTrait(CompilerFeature.IOperation)]
@@ -288,13 +287,16 @@ void F()
 }
 ";
             string expectedOperationTree = @"
-IBinaryOperatorExpression (BinaryOperatorKind.Add) (OperationKind.BinaryOperatorExpression, Type: ?, IsInvalid) (Syntax: 'x + (y * args.Length)')
-  Left: ILocalReferenceExpression: x (OperationKind.LocalReferenceExpression, Type: Program) (Syntax: 'x')
-  Right: IBinaryOperatorExpression (BinaryOperatorKind.Multiply) (OperationKind.BinaryOperatorExpression, Type: ?, IsInvalid) (Syntax: 'y * args.Length')
-      Left: IInvalidExpression (OperationKind.InvalidExpression, Type: ?, IsInvalid) (Syntax: 'y')
-          Children(0)
-      Right: IPropertyReferenceExpression: System.Int32 System.Array.Length { get; } (OperationKind.PropertyReferenceExpression, Type: System.Int32) (Syntax: 'args.Length')
-          Instance Receiver: IParameterReferenceExpression: args (OperationKind.ParameterReferenceExpression, Type: System.String[]) (Syntax: 'args')
+IArgument (ArgumentKind.Explicit, Matching Parameter: null) (OperationKind.Argument, IsInvalid) (Syntax: 'x + (y * args.Length)')
+  IBinaryOperatorExpression (BinaryOperatorKind.Add) (OperationKind.BinaryOperatorExpression, Type: ?, IsInvalid) (Syntax: 'x + (y * args.Length)')
+    Left: ILocalReferenceExpression: x (OperationKind.LocalReferenceExpression, Type: Program) (Syntax: 'x')
+    Right: IBinaryOperatorExpression (BinaryOperatorKind.Multiply) (OperationKind.BinaryOperatorExpression, Type: ?, IsInvalid) (Syntax: 'y * args.Length')
+        Left: IInvalidExpression (OperationKind.InvalidExpression, Type: ?, IsInvalid) (Syntax: 'y')
+            Children(0)
+        Right: IPropertyReferenceExpression: System.Int32 System.Array.Length { get; } (OperationKind.PropertyReferenceExpression, Type: System.Int32) (Syntax: 'args.Length')
+            Instance Receiver: IParameterReferenceExpression: args (OperationKind.ParameterReferenceExpression, Type: System.String[]) (Syntax: 'args')
+  InConversion: null
+  OutConversion: null
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0103: The name 'y' does not exist in the current context
diff --git a/src/Compilers/CSharp/Test/Semantic/Semantics/ObjectAndCollectionInitializerTests.cs b/src/Compilers/CSharp/Test/Semantic/Semantics/ObjectAndCollectionInitializerTests.cs
index 32dffdab0eb0052c71eb299b477c64151873a8de..9391370d7647a10fb76d997e08de4eb8fda5907a 100644
--- a/src/Compilers/CSharp/Test/Semantic/Semantics/ObjectAndCollectionInitializerTests.cs
+++ b/src/Compilers/CSharp/Test/Semantic/Semantics/ObjectAndCollectionInitializerTests.cs
@@ -286,14 +286,14 @@ public static void Main()
     Local_2: MemberInitializerTest j
     Local_3: MemberInitializerTest k
   IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'var i = new ... int>() { };')
-    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'var i = new ... int>() { };')
+    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = new List<int>() { }')
       Variables: Local_1: System.Collections.Generic.List<System.Int32> i
       Initializer: IObjectCreationExpression (Constructor: System.Collections.Generic.List<System.Int32>..ctor()) (OperationKind.ObjectCreationExpression, Type: System.Collections.Generic.List<System.Int32>) (Syntax: 'new List<int>() { }')
           Arguments(0)
           Initializer: IObjectOrCollectionInitializerExpression (OperationKind.ObjectOrCollectionInitializerExpression, Type: System.Collections.Generic.List<System.Int32>) (Syntax: '{ }')
               Initializers(0)
   IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'var j = new ...  x = { } };')
-    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'var j = new ...  x = { } };')
+    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'j = new Mem ... { x = { } }')
       Variables: Local_1: MemberInitializerTest j
       Initializer: IObjectCreationExpression (Constructor: MemberInitializerTest..ctor()) (OperationKind.ObjectCreationExpression, Type: MemberInitializerTest) (Syntax: 'new MemberI ... { x = { } }')
           Arguments(0)
@@ -305,7 +305,7 @@ public static void Main()
                     Initializer: IObjectOrCollectionInitializerExpression (OperationKind.ObjectOrCollectionInitializerExpression, Type: System.Collections.Generic.List<System.Int32>) (Syntax: '{ }')
                         Initializers(0)
   IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'var k = new ... Test() { };')
-    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'var k = new ... Test() { };')
+    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'k = new Mem ... rTest() { }')
       Variables: Local_1: MemberInitializerTest k
       Initializer: IObjectCreationExpression (Constructor: MemberInitializerTest..ctor()) (OperationKind.ObjectCreationExpression, Type: MemberInitializerTest) (Syntax: 'new MemberI ... rTest() { }')
           Arguments(0)
@@ -912,6 +912,8 @@ public static void Main()
             Left: IInvalidExpression (OperationKind.InvalidExpression, Type: ?, IsInvalid) (Syntax: 'x')
                 Children(1):
                     IOperation:  (OperationKind.None, IsInvalid) (Syntax: 'x')
+                      Children(1):
+                          IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: System.Int32) (Syntax: 'int')
             Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
@@ -1229,6 +1231,8 @@ public static void Main()
               Left: IInvalidExpression (OperationKind.InvalidExpression, Type: ?) (Syntax: 'x')
                   Children(1):
                       IOperation:  (OperationKind.None) (Syntax: 'x')
+                        Children(1):
+                            IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: X, IsInvalid) (Syntax: 'X')
               Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
@@ -1268,6 +1272,8 @@ void M()
               Left: IInvalidExpression (OperationKind.InvalidExpression, Type: ?) (Syntax: 'Width')
                   Children(1):
                       IOperation:  (OperationKind.None) (Syntax: 'Width')
+                        Children(1):
+                            IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: Bar, IsInvalid) (Syntax: 'Bar')
               Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 16) (Syntax: '16')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
@@ -1544,6 +1550,8 @@ public static void Main()
             Left: IInvalidExpression (OperationKind.InvalidExpression, Type: ?, IsInvalid) (Syntax: 'Goo')
                 Children(1):
                     IOperation:  (OperationKind.None, IsInvalid) (Syntax: 'Goo')
+                      Children(1):
+                          IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: MemberInitializerTest) (Syntax: 'MemberInitializerTest')
             Right: IObjectCreationExpression (Constructor: MemberInitializerTest..ctor()) (OperationKind.ObjectCreationExpression, Type: MemberInitializerTest) (Syntax: 'new MemberI ... lizerTest()')
                 Arguments(0)
                 Initializer: null
@@ -1749,7 +1757,7 @@ public static void Main()
   Locals: Local_1: MemberInitializerTest i
     Local_2: System.Collections.Generic.List<System.Collections.Generic.List<System.Int32>> collection
   IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'var i = new ...  y = { } };')
-    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'var i = new ...  y = { } };')
+    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i = new Mem ... { y = { } }')
       Variables: Local_1: MemberInitializerTest i
       Initializer: IObjectCreationExpression (Constructor: MemberInitializerTest..ctor()) (OperationKind.ObjectCreationExpression, Type: MemberInitializerTest) (Syntax: 'new MemberI ... { y = { } }')
           Arguments(0)
@@ -1789,7 +1797,7 @@ public static void Main()
                               IInvalidExpression (OperationKind.InvalidExpression, Type: ?, IsInvalid) (Syntax: '{ }')
                                 Children(0)
   IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'List<List<i ... () { { } };')
-    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'List<List<i ... () { { } };')
+    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'collection  ... >() { { } }')
       Variables: Local_1: System.Collections.Generic.List<System.Collections.Generic.List<System.Int32>> collection
       Initializer: IObjectCreationExpression (Constructor: System.Collections.Generic.List<System.Collections.Generic.List<System.Int32>>..ctor()) (OperationKind.ObjectCreationExpression, Type: System.Collections.Generic.List<System.Collections.Generic.List<System.Int32>>, IsInvalid) (Syntax: 'new List<Li ... >() { { } }')
           Arguments(0)
@@ -1885,7 +1893,7 @@ class A
   Locals: Local_1: B coll
     Local_2: A tc
   IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'B coll = new B { 1 };')
-    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'B coll = new B { 1 };')
+    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'coll = new B { 1 }')
       Variables: Local_1: B coll
       Initializer: IObjectCreationExpression (Constructor: B..ctor()) (OperationKind.ObjectCreationExpression, Type: B, IsInvalid) (Syntax: 'new B { 1 }')
           Arguments(0)
@@ -1895,7 +1903,7 @@ class A
                     Children(1):
                         ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1, IsInvalid) (Syntax: '1')
   IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'var tc = ne ...  ""hello"" };')
-    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'var tc = ne ...  ""hello"" };')
+    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'tc = new A  ... , ""hello"" }')
       Variables: Local_1: A tc
       Initializer: IObjectCreationExpression (Constructor: A..ctor()) (OperationKind.ObjectCreationExpression, Type: A, IsInvalid) (Syntax: 'new A { 1, ""hello"" }')
           Arguments(0)
@@ -2239,6 +2247,8 @@ public static void Main()
 IInvalidExpression (OperationKind.InvalidExpression, Type: MemberInitializerTest.D<System.Int32>, IsInvalid) (Syntax: 'new D<int>( ... d<int>) { }')
   Children(1):
       IOperation:  (OperationKind.None, IsInvalid) (Syntax: 'GenericMethod<int>')
+        Children(1):
+            IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: MemberInitializerTest, IsInvalid) (Syntax: 'GenericMethod<int>')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS1958: Object and collection initializer expressions may not be applied to a delegate creation expression
@@ -2348,7 +2358,7 @@ public IEnumerator GetEnumerator()
     Local_3: D coll3
     Local_4: E coll4
   IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'B coll1 = new B { 1 };')
-    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'B coll1 = new B { 1 };')
+    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'coll1 = new B { 1 }')
       Variables: Local_1: B coll1
       Initializer: IObjectCreationExpression (Constructor: B..ctor()) (OperationKind.ObjectCreationExpression, Type: B, IsInvalid) (Syntax: 'new B { 1 }')
           Arguments(0)
@@ -2362,7 +2372,7 @@ public IEnumerator GetEnumerator()
                           InConversion: null
                           OutConversion: null
   IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'C coll2 = new C { 1 };')
-    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'C coll2 = new C { 1 };')
+    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'coll2 = new C { 1 }')
       Variables: Local_1: C coll2
       Initializer: IObjectCreationExpression (Constructor: C..ctor()) (OperationKind.ObjectCreationExpression, Type: C, IsInvalid) (Syntax: 'new C { 1 }')
           Arguments(0)
@@ -2376,7 +2386,7 @@ public IEnumerator GetEnumerator()
                           InConversion: null
                           OutConversion: null
   IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'D coll3 = n ... { 1, 2 } };')
-    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'D coll3 = n ... { 1, 2 } };')
+    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'coll3 = new ...  { 1, 2 } }')
       Variables: Local_1: D coll3
       Initializer: IObjectCreationExpression (Constructor: D..ctor()) (OperationKind.ObjectCreationExpression, Type: D, IsInvalid) (Syntax: 'new D { { 1, 2 } }')
           Arguments(0)
@@ -2394,7 +2404,7 @@ public IEnumerator GetEnumerator()
                           InConversion: null
                           OutConversion: null
   IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'E coll4 = new E { 1 };')
-    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'E coll4 = new E { 1 };')
+    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'coll4 = new E { 1 }')
       Variables: Local_1: E coll4
       Initializer: IObjectCreationExpression (Constructor: E..ctor()) (OperationKind.ObjectCreationExpression, Type: E, IsInvalid) (Syntax: 'new E { 1 }')
           Arguments(0)
@@ -2515,6 +2525,8 @@ static void Main(string[] args)
               Left: IInvalidExpression (OperationKind.InvalidExpression, Type: ?, IsInvalid) (Syntax: 'x')
                   Children(1):
                       IOperation:  (OperationKind.None, IsInvalid) (Syntax: 'x')
+                        Children(1):
+                            IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: Dictionary<System.Object, System.Object>, IsInvalid) (Syntax: 'Dictionary< ... ct, object>')
               Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1) (Syntax: '1')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
@@ -2923,13 +2935,14 @@ static void Main()
 }
 ";
             string expectedOperationTree = @"
-IObjectCreationExpression (Constructor: C..ctor()) (OperationKind.ObjectCreationExpression, Type: C, IsInvalid) (Syntax: 'new C { 1 }')
-  Arguments(0)
-  Initializer: IObjectOrCollectionInitializerExpression (OperationKind.ObjectOrCollectionInitializerExpression, Type: C, IsInvalid) (Syntax: '{ 1 }')
-      Initializers(1):
-          ICollectionElementInitializerExpression (AddMethod: void C.Add(System.Int32 i)) (IsDynamic: False) (OperationKind.CollectionElementInitializerExpression, Type: System.Void, IsInvalid) (Syntax: '1')
-            Arguments(1):
-                ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1, IsInvalid) (Syntax: '1')
+IExpressionStatement (OperationKind.ExpressionStatement, IsInvalid) (Syntax: 'new C { 1 }')
+  Expression: IObjectCreationExpression (Constructor: C..ctor()) (OperationKind.ObjectCreationExpression, Type: C, IsInvalid) (Syntax: 'new C { 1 }')
+      Arguments(0)
+      Initializer: IObjectOrCollectionInitializerExpression (OperationKind.ObjectOrCollectionInitializerExpression, Type: C, IsInvalid) (Syntax: '{ 1 }')
+          Initializers(1):
+              ICollectionElementInitializerExpression (AddMethod: void C.Add(System.Int32 i)) (IsDynamic: False) (OperationKind.CollectionElementInitializerExpression, Type: System.Void, IsInvalid) (Syntax: '1')
+                Arguments(1):
+                    ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1, IsInvalid) (Syntax: '1')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0765: Partial methods with only a defining declaration or removed conditional methods cannot be used in expression trees
diff --git a/src/Compilers/CSharp/Test/Semantic/Semantics/OperatorTests.cs b/src/Compilers/CSharp/Test/Semantic/Semantics/OperatorTests.cs
index 2b5ee759c813f89562154f5c5ff2ccd5c953d2e0..47b89511d474c12ab7ff97b89e225c97344477e7 100644
--- a/src/Compilers/CSharp/Test/Semantic/Semantics/OperatorTests.cs
+++ b/src/Compilers/CSharp/Test/Semantic/Semantics/OperatorTests.cs
@@ -1133,39 +1133,44 @@ static void Main()
 }
 ";
             string expectedOperationTree = @"
-IBinaryOperatorExpression (BinaryOperatorKind.Or) (OperatorMethod: S S.op_BitwiseOr(S x, S y)) (OperationKind.BinaryOperatorExpression, Type: S) (Syntax: '(a >> 10) + ... m <= o >= p')
-  Left: IBinaryOperatorExpression (BinaryOperatorKind.And) (OperatorMethod: S S.op_BitwiseAnd(S x, S y)) (OperationKind.BinaryOperatorExpression, Type: S) (Syntax: '(a >> 10) + ... / e % f & g')
-      Left: IBinaryOperatorExpression (BinaryOperatorKind.Subtract) (OperatorMethod: S S.op_Subtraction(S x, S y)) (OperationKind.BinaryOperatorExpression, Type: S) (Syntax: '(a >> 10) + ... * d / e % f')
-          Left: IBinaryOperatorExpression (BinaryOperatorKind.Add) (OperatorMethod: S S.op_Addition(S x, S y)) (OperationKind.BinaryOperatorExpression, Type: S) (Syntax: '(a >> 10) + (b << 20)')
-              Left: IBinaryOperatorExpression (BinaryOperatorKind.RightShift) (OperatorMethod: S S.op_RightShift(S x, System.Int32 y)) (OperationKind.BinaryOperatorExpression, Type: S) (Syntax: 'a >> 10')
-                  Left: ILocalReferenceExpression: a (OperationKind.LocalReferenceExpression, Type: S) (Syntax: 'a')
-                  Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 10) (Syntax: '10')
-              Right: IBinaryOperatorExpression (BinaryOperatorKind.LeftShift) (OperatorMethod: S S.op_LeftShift(S x, System.Int32 y)) (OperationKind.BinaryOperatorExpression, Type: S) (Syntax: 'b << 20')
-                  Left: ILocalReferenceExpression: b (OperationKind.LocalReferenceExpression, Type: S) (Syntax: 'b')
-                  Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 20) (Syntax: '20')
-          Right: IBinaryOperatorExpression (BinaryOperatorKind.Remainder) (OperatorMethod: S S.op_Modulus(S x, S y)) (OperationKind.BinaryOperatorExpression, Type: S) (Syntax: 'c * d / e % f')
-              Left: IBinaryOperatorExpression (BinaryOperatorKind.Divide) (OperatorMethod: S S.op_Division(S x, S y)) (OperationKind.BinaryOperatorExpression, Type: S) (Syntax: 'c * d / e')
-                  Left: IBinaryOperatorExpression (BinaryOperatorKind.Multiply) (OperatorMethod: S S.op_Multiply(S x, S y)) (OperationKind.BinaryOperatorExpression, Type: S) (Syntax: 'c * d')
-                      Left: ILocalReferenceExpression: c (OperationKind.LocalReferenceExpression, Type: S) (Syntax: 'c')
-                      Right: ILocalReferenceExpression: d (OperationKind.LocalReferenceExpression, Type: S) (Syntax: 'd')
-                  Right: ILocalReferenceExpression: e (OperationKind.LocalReferenceExpression, Type: S) (Syntax: 'e')
-              Right: ILocalReferenceExpression: f (OperationKind.LocalReferenceExpression, Type: S) (Syntax: 'f')
-      Right: ILocalReferenceExpression: g (OperationKind.LocalReferenceExpression, Type: S) (Syntax: 'g')
-  Right: IBinaryOperatorExpression (BinaryOperatorKind.ExclusiveOr) (OperatorMethod: S S.op_ExclusiveOr(S x, S y)) (OperationKind.BinaryOperatorExpression, Type: S) (Syntax: 'h ^ i == j  ... m <= o >= p')
-      Left: ILocalReferenceExpression: h (OperationKind.LocalReferenceExpression, Type: S) (Syntax: 'h')
-      Right: IBinaryOperatorExpression (BinaryOperatorKind.NotEquals) (OperatorMethod: S S.op_Inequality(S x, S y)) (OperationKind.BinaryOperatorExpression, Type: S) (Syntax: 'i == j != k ... m <= o >= p')
-          Left: IBinaryOperatorExpression (BinaryOperatorKind.Equals) (OperatorMethod: S S.op_Equality(S x, S y)) (OperationKind.BinaryOperatorExpression, Type: S) (Syntax: 'i == j')
-              Left: ILocalReferenceExpression: i (OperationKind.LocalReferenceExpression, Type: S) (Syntax: 'i')
-              Right: ILocalReferenceExpression: j (OperationKind.LocalReferenceExpression, Type: S) (Syntax: 'j')
-          Right: IBinaryOperatorExpression (BinaryOperatorKind.GreaterThanOrEqual) (OperatorMethod: S S.op_GreaterThanOrEqual(S x, S y)) (OperationKind.BinaryOperatorExpression, Type: S) (Syntax: 'k < l > m <= o >= p')
-              Left: IBinaryOperatorExpression (BinaryOperatorKind.LessThanOrEqual) (OperatorMethod: S S.op_LessThanOrEqual(S x, S y)) (OperationKind.BinaryOperatorExpression, Type: S) (Syntax: 'k < l > m <= o')
-                  Left: IBinaryOperatorExpression (BinaryOperatorKind.GreaterThan) (OperatorMethod: S S.op_GreaterThan(S x, S y)) (OperationKind.BinaryOperatorExpression, Type: S) (Syntax: 'k < l > m')
-                      Left: IBinaryOperatorExpression (BinaryOperatorKind.LessThan) (OperatorMethod: S S.op_LessThan(S x, S y)) (OperationKind.BinaryOperatorExpression, Type: S) (Syntax: 'k < l')
-                          Left: ILocalReferenceExpression: k (OperationKind.LocalReferenceExpression, Type: S) (Syntax: 'k')
-                          Right: ILocalReferenceExpression: l (OperationKind.LocalReferenceExpression, Type: S) (Syntax: 'l')
-                      Right: ILocalReferenceExpression: m (OperationKind.LocalReferenceExpression, Type: S) (Syntax: 'm')
-                  Right: ILocalReferenceExpression: o (OperationKind.LocalReferenceExpression, Type: S) (Syntax: 'o')
-              Right: ILocalReferenceExpression: p (OperationKind.LocalReferenceExpression, Type: S) (Syntax: 'p')
+IArgument (ArgumentKind.Explicit, Matching Parameter: value) (OperationKind.Argument) (Syntax: '(a >> 10) + ... m <= o >= p')
+  IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object) (Syntax: '(a >> 10) + ... m <= o >= p')
+    Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+    Operand: IBinaryOperatorExpression (BinaryOperatorKind.Or) (OperatorMethod: S S.op_BitwiseOr(S x, S y)) (OperationKind.BinaryOperatorExpression, Type: S) (Syntax: '(a >> 10) + ... m <= o >= p')
+        Left: IBinaryOperatorExpression (BinaryOperatorKind.And) (OperatorMethod: S S.op_BitwiseAnd(S x, S y)) (OperationKind.BinaryOperatorExpression, Type: S) (Syntax: '(a >> 10) + ... / e % f & g')
+            Left: IBinaryOperatorExpression (BinaryOperatorKind.Subtract) (OperatorMethod: S S.op_Subtraction(S x, S y)) (OperationKind.BinaryOperatorExpression, Type: S) (Syntax: '(a >> 10) + ... * d / e % f')
+                Left: IBinaryOperatorExpression (BinaryOperatorKind.Add) (OperatorMethod: S S.op_Addition(S x, S y)) (OperationKind.BinaryOperatorExpression, Type: S) (Syntax: '(a >> 10) + (b << 20)')
+                    Left: IBinaryOperatorExpression (BinaryOperatorKind.RightShift) (OperatorMethod: S S.op_RightShift(S x, System.Int32 y)) (OperationKind.BinaryOperatorExpression, Type: S) (Syntax: 'a >> 10')
+                        Left: ILocalReferenceExpression: a (OperationKind.LocalReferenceExpression, Type: S) (Syntax: 'a')
+                        Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 10) (Syntax: '10')
+                    Right: IBinaryOperatorExpression (BinaryOperatorKind.LeftShift) (OperatorMethod: S S.op_LeftShift(S x, System.Int32 y)) (OperationKind.BinaryOperatorExpression, Type: S) (Syntax: 'b << 20')
+                        Left: ILocalReferenceExpression: b (OperationKind.LocalReferenceExpression, Type: S) (Syntax: 'b')
+                        Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 20) (Syntax: '20')
+                Right: IBinaryOperatorExpression (BinaryOperatorKind.Remainder) (OperatorMethod: S S.op_Modulus(S x, S y)) (OperationKind.BinaryOperatorExpression, Type: S) (Syntax: 'c * d / e % f')
+                    Left: IBinaryOperatorExpression (BinaryOperatorKind.Divide) (OperatorMethod: S S.op_Division(S x, S y)) (OperationKind.BinaryOperatorExpression, Type: S) (Syntax: 'c * d / e')
+                        Left: IBinaryOperatorExpression (BinaryOperatorKind.Multiply) (OperatorMethod: S S.op_Multiply(S x, S y)) (OperationKind.BinaryOperatorExpression, Type: S) (Syntax: 'c * d')
+                            Left: ILocalReferenceExpression: c (OperationKind.LocalReferenceExpression, Type: S) (Syntax: 'c')
+                            Right: ILocalReferenceExpression: d (OperationKind.LocalReferenceExpression, Type: S) (Syntax: 'd')
+                        Right: ILocalReferenceExpression: e (OperationKind.LocalReferenceExpression, Type: S) (Syntax: 'e')
+                    Right: ILocalReferenceExpression: f (OperationKind.LocalReferenceExpression, Type: S) (Syntax: 'f')
+            Right: ILocalReferenceExpression: g (OperationKind.LocalReferenceExpression, Type: S) (Syntax: 'g')
+        Right: IBinaryOperatorExpression (BinaryOperatorKind.ExclusiveOr) (OperatorMethod: S S.op_ExclusiveOr(S x, S y)) (OperationKind.BinaryOperatorExpression, Type: S) (Syntax: 'h ^ i == j  ... m <= o >= p')
+            Left: ILocalReferenceExpression: h (OperationKind.LocalReferenceExpression, Type: S) (Syntax: 'h')
+            Right: IBinaryOperatorExpression (BinaryOperatorKind.NotEquals) (OperatorMethod: S S.op_Inequality(S x, S y)) (OperationKind.BinaryOperatorExpression, Type: S) (Syntax: 'i == j != k ... m <= o >= p')
+                Left: IBinaryOperatorExpression (BinaryOperatorKind.Equals) (OperatorMethod: S S.op_Equality(S x, S y)) (OperationKind.BinaryOperatorExpression, Type: S) (Syntax: 'i == j')
+                    Left: ILocalReferenceExpression: i (OperationKind.LocalReferenceExpression, Type: S) (Syntax: 'i')
+                    Right: ILocalReferenceExpression: j (OperationKind.LocalReferenceExpression, Type: S) (Syntax: 'j')
+                Right: IBinaryOperatorExpression (BinaryOperatorKind.GreaterThanOrEqual) (OperatorMethod: S S.op_GreaterThanOrEqual(S x, S y)) (OperationKind.BinaryOperatorExpression, Type: S) (Syntax: 'k < l > m <= o >= p')
+                    Left: IBinaryOperatorExpression (BinaryOperatorKind.LessThanOrEqual) (OperatorMethod: S S.op_LessThanOrEqual(S x, S y)) (OperationKind.BinaryOperatorExpression, Type: S) (Syntax: 'k < l > m <= o')
+                        Left: IBinaryOperatorExpression (BinaryOperatorKind.GreaterThan) (OperatorMethod: S S.op_GreaterThan(S x, S y)) (OperationKind.BinaryOperatorExpression, Type: S) (Syntax: 'k < l > m')
+                            Left: IBinaryOperatorExpression (BinaryOperatorKind.LessThan) (OperatorMethod: S S.op_LessThan(S x, S y)) (OperationKind.BinaryOperatorExpression, Type: S) (Syntax: 'k < l')
+                                Left: ILocalReferenceExpression: k (OperationKind.LocalReferenceExpression, Type: S) (Syntax: 'k')
+                                Right: ILocalReferenceExpression: l (OperationKind.LocalReferenceExpression, Type: S) (Syntax: 'l')
+                            Right: ILocalReferenceExpression: m (OperationKind.LocalReferenceExpression, Type: S) (Syntax: 'm')
+                        Right: ILocalReferenceExpression: o (OperationKind.LocalReferenceExpression, Type: S) (Syntax: 'o')
+                    Right: ILocalReferenceExpression: p (OperationKind.LocalReferenceExpression, Type: S) (Syntax: 'p')
+  InConversion: null
+  OutConversion: null
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0660: 'S' defines operator == or operator != but does not override Object.Equals(object o)
@@ -1680,13 +1685,13 @@ static void M(S s1, S s2, S? s3, S? s4, X<int> xint)
     Local_2: System.Int32? q
     Local_3: System.Boolean[] b
   IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'int x = xint + 123;')
-    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'int x = xint + 123;')
+    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'x = xint + 123')
       Variables: Local_1: System.Int32 x
       Initializer: IBinaryOperatorExpression (BinaryOperatorKind.Add) (OperatorMethod: System.Int32 X<System.Int32>.op_Addition(X<System.Int32> x, System.Int32 y)) (OperationKind.BinaryOperatorExpression, Type: System.Int32) (Syntax: 'xint + 123')
           Left: IParameterReferenceExpression: xint (OperationKind.ParameterReferenceExpression, Type: X<System.Int32>) (Syntax: 'xint')
           Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 123) (Syntax: '123')
   IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'int? q = ne ... new int?();')
-    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'int? q = ne ... new int?();')
+    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'q = new Q<i ...  new int?()')
       Variables: Local_1: System.Int32? q
       Initializer: IBinaryOperatorExpression (BinaryOperatorKind.Add, IsLifted) (OperatorMethod: System.Int32 Q<System.Int32>.op_Addition(Q<System.Int32> x, System.Int32 y)) (OperationKind.BinaryOperatorExpression, Type: System.Int32?) (Syntax: 'new Q<int>? ...  new int?()')
           Left: IObjectCreationExpression (Constructor: Q<System.Int32>?..ctor()) (OperationKind.ObjectCreationExpression, Type: Q<System.Int32>?) (Syntax: 'new Q<int>?()')
@@ -1696,7 +1701,7 @@ static void M(S s1, S s2, S? s3, S? s4, X<int> xint)
               Arguments(0)
               Initializer: null
   IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'bool[] b = ... };')
-    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'bool[] b = ... };')
+    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'b = ... }')
       Variables: Local_1: System.Boolean[] b
       Initializer: IArrayCreationExpression (Element Type: System.Boolean) (OperationKind.ArrayCreationExpression, Type: System.Boolean[]) (Syntax: '{ ... }')
           Dimension Sizes(1):
diff --git a/src/Compilers/CSharp/Test/Semantic/Semantics/OutVarTests.cs b/src/Compilers/CSharp/Test/Semantic/Semantics/OutVarTests.cs
index 5e609c593b968ae33b1c75c5a0dcc574e1ada8e9..10152191496a60ea09b23a6da150dcb4c61a56e4 100644
--- a/src/Compilers/CSharp/Test/Semantic/Semantics/OutVarTests.cs
+++ b/src/Compilers/CSharp/Test/Semantic/Semantics/OutVarTests.cs
@@ -1015,7 +1015,9 @@ private static void VerifyModelForOutVarInNotExecutableCode(SemanticModel model,
 
             var typeInfo = model.GetTypeInfo(decl);
             Assert.Equal(expectedType, typeInfo.Type);
-            Assert.Equal(expectedType, model.GetOperationInternal(decl)?.Type);
+
+            // skip cases where operation is not supported
+            AssertTypeFromOperation(model, expectedType, decl);
 
             // Note: the following assertion is not, in general, correct for declaration expressions,
             // even though this helper is used to handle declaration expressions.
@@ -1066,6 +1068,33 @@ private static void VerifyModelForOutVarInNotExecutableCode(SemanticModel model,
             Assert.Null(model.GetDeclaredSymbol(decl));
         }
 
+        private static void AssertTypeFromOperation(SemanticModel model, TypeSymbol expectedType, DeclarationExpressionSyntax decl)
+        {
+            var variableDeclarator = decl.Ancestors().OfType<VariableDeclaratorSyntax>().FirstOrDefault();
+            if (variableDeclarator?.ArgumentList?.FullSpan.Contains(decl.Span) == true)
+            {
+                // node in argument list is error case which operation doesn't support
+                return;
+            }
+
+            var foreachLoop = decl.Ancestors().OfType<ForEachVariableStatementSyntax>().FirstOrDefault();
+            if (foreachLoop?.Variable?.FullSpan.Contains(decl.Span) == true &&
+                foreachLoop?.Variable.IsKind(SyntaxKind.InvocationExpression) == true)
+            {
+                // invalid syntax case where operation is not supported
+                return;
+            }
+
+            var typeofExpression = decl.Ancestors().OfType<TypeOfExpressionSyntax>().FirstOrDefault();
+            if (typeofExpression?.Type?.FullSpan.Contains(decl.Span) == true)
+            {
+                // invalid syntax case where operation is not supported
+                return;
+            }
+
+            Assert.Equal(expectedType, model.GetOperationInternal(decl)?.Type);
+        }
+
         private static void VerifyDataFlow(SemanticModel model, DeclarationExpressionSyntax decl, bool isDelegateCreation, bool isExecutableCode, IdentifierNameSyntax[] references, ISymbol symbol)
         {
             var dataFlowParent = decl.Parent.Parent.Parent as ExpressionSyntax;
@@ -8650,7 +8679,7 @@ static bool TakeOutParam(int y, out int x)
             var compilation = CreateCompilationWithMscorlib45(source, options: TestOptions.DebugExe, parseOptions: TestOptions.Regular);
             CompileAndVerify(compilation, expectedOutput: @"1
 True");
-            
+
             var tree = compilation.SyntaxTrees.Single();
             var model = compilation.GetSemanticModel(tree);
 
@@ -21605,7 +21634,7 @@ static class StaticType {}
                 Diagnostic(ErrorCode.ERR_VarDeclIsStaticClass, "StaticType").WithArguments("Cls.StaticType").WithLocation(6, 19)
                 );
         }
-        
+
         [Fact]
         public void GlobalCode_Catch_01()
         {
@@ -32602,7 +32631,7 @@ void M<T>()
 
             var varType = tree.GetRoot().DescendantNodes().OfType<IdentifierNameSyntax>().Where(id => id.Identifier.ValueText == "var").Single();
             Assert.Equal("var", varType.ToString());
-            Assert.Null(model.GetAliasInfo(varType)); 
+            Assert.Null(model.GetAliasInfo(varType));
 
             var decl = GetOutVarDeclaration(tree, "x");
             Assert.Equal("var", model.GetTypeInfo(decl).Type.ToTestDisplayString()); // crashes
@@ -32638,7 +32667,7 @@ void M<T>()
 
             var varType = tree.GetRoot().DescendantNodes().OfType<IdentifierNameSyntax>().Where(id => id.Identifier.ValueText == "var").Single();
             Assert.Equal("var", varType.ToString());
-            Assert.Null(model.GetAliasInfo(varType)); 
+            Assert.Null(model.GetAliasInfo(varType));
 
             var decl = GetOutVarDeclaration(tree, "x");
             Assert.Equal("var", model.GetTypeInfo(decl).Type.ToTestDisplayString()); // crashes
@@ -32744,7 +32773,7 @@ void M<T>()
 
             var varType = tree.GetRoot().DescendantNodes().OfType<IdentifierNameSyntax>().Where(id => id.Identifier.ValueText == "var").Single();
             Assert.Equal("var", varType.ToString());
-            Assert.Null(model.GetAliasInfo(varType)); 
+            Assert.Null(model.GetAliasInfo(varType));
 
             var decl = GetOutVarDeclaration(tree, "x");
             Assert.Equal("var", model.GetTypeInfo(decl).Type.ToTestDisplayString()); // crashes
diff --git a/src/Compilers/CSharp/Test/Symbol/Symbols/AnonymousTypesSemanticsTests.cs b/src/Compilers/CSharp/Test/Symbol/Symbols/AnonymousTypesSemanticsTests.cs
index 4412f6ef25337a3cb02442f93b6de80690e315ff..da42472701f56878a21501acdf8f68339d3b7a16 100644
--- a/src/Compilers/CSharp/Test/Symbol/Symbols/AnonymousTypesSemanticsTests.cs
+++ b/src/Compilers/CSharp/Test/Symbol/Symbols/AnonymousTypesSemanticsTests.cs
@@ -135,7 +135,7 @@ public int aa
     Local_3: System.Object v3
     Local_4: <empty anonymous type> v4
   IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'object v1 = ... };')
-    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'object v1 = ... };')
+    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'v1 = new ... }')
       Variables: Local_1: System.Object v1
       Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object) (Syntax: 'new ... }')
           Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
@@ -156,7 +156,7 @@ public int aa
                         Arguments(0)
                         Initializer: null
   IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'object v2 = ... };')
-    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'object v2 = ... };')
+    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'v2 = new ... }')
       Variables: Local_1: System.Object v2
       Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object) (Syntax: 'new ... }')
           Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
@@ -186,14 +186,14 @@ public int aa
                             IFieldReferenceExpression: ClassA.SSS ClassA.CCC (Static) (OperationKind.FieldReferenceExpression, Type: ClassA.SSS) (Syntax: 'ClassA.CCC')
                               Instance Receiver: null
   IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'object v3 = new { };')
-    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'object v3 = new { };')
+    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'v3 = new { }')
       Variables: Local_1: System.Object v3
       Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object) (Syntax: 'new { }')
           Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
           Operand: IAnonymousObjectCreationExpression (OperationKind.AnonymousObjectCreationExpression, Type: <empty anonymous type>) (Syntax: 'new { }')
               Initializers(0)
   IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement) (Syntax: 'var v4 = new { };')
-    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'var v4 = new { };')
+    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'v4 = new { }')
       Variables: Local_1: <empty anonymous type> v4
       Initializer: IAnonymousObjectCreationExpression (OperationKind.AnonymousObjectCreationExpression, Type: <empty anonymous type>) (Syntax: 'new { }')
           Initializers(0)
@@ -1014,7 +1014,7 @@ public static void Test1(int x)
   Locals: Local_1: System.Object v1
     Local_2: System.Object v2
   IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'object v1 = ... };')
-    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'object v1 = ... };')
+    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'v1 = new ... }')
       Variables: Local_1: System.Object v1
       Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object, IsInvalid) (Syntax: 'new ... }')
           Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
@@ -1035,7 +1035,7 @@ public static void Test1(int x)
                     Right: IInvalidExpression (OperationKind.InvalidExpression, Type: SSS, IsInvalid) (Syntax: 'new SSS()')
                         Children(0)
   IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'object v2 = ... };')
-    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'object v2 = ... };')
+    IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'v2 = new ... }')
       Variables: Local_1: System.Object v2
       Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object, IsInvalid) (Syntax: 'new ... }')
           Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
@@ -1131,14 +1131,11 @@ public static void Test1(int x)
 }
 ";
 string expectedOperationTree = @"
-IUsingStatement (OperationKind.UsingStatement, IsInvalid) (Syntax: 'using (/*<b ... }')
-  Declaration: IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'var v1 = new { }')
-      IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'v1 = new { }')
-        Variables: Local_1: <empty anonymous type> v1
-        Initializer: IAnonymousObjectCreationExpression (OperationKind.AnonymousObjectCreationExpression, Type: <empty anonymous type>, IsInvalid) (Syntax: 'new { }')
-            Initializers(0)
-  Value: null
-  Body: IBlockStatement (0 statements) (OperationKind.BlockStatement) (Syntax: '{ ... }')
+IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'var v1 = new { }')
+  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 'v1 = new { }')
+    Variables: Local_1: <empty anonymous type> v1
+    Initializer: IAnonymousObjectCreationExpression (OperationKind.AnonymousObjectCreationExpression, Type: <empty anonymous type>, IsInvalid) (Syntax: 'new { }')
+        Initializers(0)
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS1674: '<empty anonymous type>': type used in a using statement must be implicitly convertible to 'System.IDisposable'
diff --git a/src/Compilers/VisualBasic/Portable/Operations/VisualBasicOperationFactory.vb b/src/Compilers/VisualBasic/Portable/Operations/VisualBasicOperationFactory.vb
index 3d4ad56d383069e34210d05a38855590eda695fb..b93ee29cca471e624e8605218b090b32dcc06632 100644
--- a/src/Compilers/VisualBasic/Portable/Operations/VisualBasicOperationFactory.vb
+++ b/src/Compilers/VisualBasic/Portable/Operations/VisualBasicOperationFactory.vb
@@ -1100,7 +1100,7 @@ Namespace Microsoft.CodeAnalysis.Semantics
 
         Private Function CreateBoundGotoStatementOperation(boundGotoStatement As BoundGotoStatement) As IBranchStatement
             Dim target As ILabelSymbol = boundGotoStatement.Label
-            Dim branchKind As BranchKind = branchKind.GoTo
+            Dim branchKind As BranchKind = BranchKind.GoTo
             Dim syntax As SyntaxNode = boundGotoStatement.Syntax
             Dim type As ITypeSymbol = Nothing
             Dim constantValue As [Optional](Of Object) = New [Optional](Of Object)()
@@ -1110,7 +1110,7 @@ Namespace Microsoft.CodeAnalysis.Semantics
 
         Private Function CreateBoundContinueStatementOperation(boundContinueStatement As BoundContinueStatement) As IBranchStatement
             Dim target As ILabelSymbol = boundContinueStatement.Label
-            Dim branchKind As BranchKind = branchKind.Continue
+            Dim branchKind As BranchKind = BranchKind.Continue
             Dim syntax As SyntaxNode = boundContinueStatement.Syntax
             Dim type As ITypeSymbol = Nothing
             Dim constantValue As [Optional](Of Object) = New [Optional](Of Object)()
@@ -1120,7 +1120,7 @@ Namespace Microsoft.CodeAnalysis.Semantics
 
         Private Function CreateBoundExitStatementOperation(boundExitStatement As BoundExitStatement) As IBranchStatement
             Dim target As ILabelSymbol = boundExitStatement.Label
-            Dim branchKind As BranchKind = branchKind.Break
+            Dim branchKind As BranchKind = BranchKind.Break
             Dim syntax As SyntaxNode = boundExitStatement.Syntax
             Dim type As ITypeSymbol = Nothing
             Dim constantValue As [Optional](Of Object) = New [Optional](Of Object)()