Test dumper change to include Isimplicit/Language and some formatting change (#22309)

* Adding cobyrc file for testing

* Adding isImplicit info to ioperation tests

* Adding Language name to the test dumper

* Formatting change to test dumper

* Removing cobyrc file

* Fixing more tests

* Resolving conflicts

* Moving the language to assert check

* Resolving conflicts

* Reacting to merge conflict

src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests.cs

@@ -47,23 +47,27 @@ static void Test2(int y, params int[] x)
 
             compilation.VerifyOperationTree(nodes[0], expectedOperationTree:
 @"IInvocationExpression (void Cls.Test1(params System.Int32[] x)) (OperationKind.InvocationExpression, Type: System.Void) (Syntax: 'Test1(null)')
-  Instance Receiver: null
+  Instance Receiver: 
+    null
   Arguments(1):
       IArgument (ArgumentKind.Explicit, Matching Parameter: x) (OperationKind.Argument) (Syntax: 'null')
-        IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32[], Constant: null) (Syntax: 'null')
+        IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32[], Constant: null, IsImplicit) (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')
+          Operand: 
+            ILiteralExpression (OperationKind.LiteralExpression, Type: null, Constant: null) (Syntax: 'null')
         InConversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
         OutConversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)");
 
             compilation.VerifyOperationTree(nodes[1], expectedOperationTree:
 @"IInvocationExpression (void Cls.Test2(System.Int32 y, params System.Int32[] x)) (OperationKind.InvocationExpression, Type: System.Void, IsInvalid) (Syntax: 'Test2(new o ... ct(), null)')
-  Instance Receiver: null
+  Instance Receiver: 
+    null
   Arguments(2):
       IArgument (ArgumentKind.Explicit, Matching Parameter: null) (OperationKind.Argument, IsInvalid) (Syntax: 'new object()')
         IObjectCreationExpression (Constructor: System.Object..ctor()) (OperationKind.ObjectCreationExpression, Type: System.Object, IsInvalid) (Syntax: 'new object()')
           Arguments(0)
-          Initializer: null
+          Initializer: 
+            null
         InConversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
         OutConversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
       IArgument (ArgumentKind.Explicit, Matching Parameter: null) (OperationKind.Argument) (Syntax: 'null')

src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IAnonymousFunctionExpression.cs

-// 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.Linq;
 using Microsoft.CodeAnalysis.CSharp.Syntax;
@@ -33,16 +33,21 @@ static void F()
 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()')
+    Initializer: 
+      IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Action, IsImplicit) (Syntax: '() => F()')
         Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-        Operand: IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null) (Syntax: '() => F()')
-            IBlockStatement (2 statements) (OperationKind.BlockStatement) (Syntax: 'F()')
-              IExpressionStatement (OperationKind.ExpressionStatement) (Syntax: 'F()')
-                Expression: IInvocationExpression (void Program.F()) (OperationKind.InvocationExpression, Type: System.Void) (Syntax: 'F()')
-                    Instance Receiver: null
+        Operand: 
+          IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null) (Syntax: '() => F()')
+            IBlockStatement (2 statements) (OperationKind.BlockStatement, IsImplicit) (Syntax: 'F()')
+              IExpressionStatement (OperationKind.ExpressionStatement, IsImplicit) (Syntax: 'F()')
+                Expression: 
+                  IInvocationExpression (void Program.F()) (OperationKind.InvocationExpression, Type: System.Void) (Syntax: 'F()')
+                    Instance Receiver: 
+                      null
                     Arguments(0)
-              IReturnStatement (OperationKind.ReturnStatement) (Syntax: 'F()')
-                ReturnedValue: null
+              IReturnStatement (OperationKind.ReturnStatement, IsImplicit) (Syntax: 'F()')
+                ReturnedValue: 
+                  null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -70,13 +75,16 @@ static void F()
 ";
             string expectedOperationTree = @"
 IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null) (Syntax: '() => F()')
-  IBlockStatement (2 statements) (OperationKind.BlockStatement) (Syntax: 'F()')
-    IExpressionStatement (OperationKind.ExpressionStatement) (Syntax: 'F()')
-      Expression: IInvocationExpression (void Program.F()) (OperationKind.InvocationExpression, Type: System.Void) (Syntax: 'F()')
-          Instance Receiver: null
+  IBlockStatement (2 statements) (OperationKind.BlockStatement, IsImplicit) (Syntax: 'F()')
+    IExpressionStatement (OperationKind.ExpressionStatement, IsImplicit) (Syntax: 'F()')
+      Expression: 
+        IInvocationExpression (void Program.F()) (OperationKind.InvocationExpression, Type: System.Void) (Syntax: 'F()')
+          Instance Receiver: 
+            null
           Arguments(0)
-    IReturnStatement (OperationKind.ReturnStatement) (Syntax: 'F()')
-      ReturnedValue: null
+    IReturnStatement (OperationKind.ReturnStatement, IsImplicit) (Syntax: 'F()')
+      ReturnedValue: 
+        null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -106,11 +114,14 @@ static void F()
 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()')
-          IExpressionStatement (OperationKind.ExpressionStatement, IsInvalid) (Syntax: 'F()')
-            Expression: IInvocationExpression (void Program.F()) (OperationKind.InvocationExpression, Type: System.Void, IsInvalid) (Syntax: 'F()')
-                Instance Receiver: null
+    Initializer: 
+      IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null, IsInvalid) (Syntax: '() => F()')
+        IBlockStatement (1 statements) (OperationKind.BlockStatement, IsInvalid, IsImplicit) (Syntax: 'F()')
+          IExpressionStatement (OperationKind.ExpressionStatement, IsInvalid, IsImplicit) (Syntax: 'F()')
+            Expression: 
+              IInvocationExpression (void Program.F()) (OperationKind.InvocationExpression, Type: System.Void, IsInvalid) (Syntax: 'F()')
+                Instance Receiver: 
+                  null
                 Arguments(0)
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
@@ -145,13 +156,17 @@ static void F()
 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()')
+    Initializer: 
+      IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Action<System.Int32>, IsInvalid, IsImplicit) (Syntax: '() => F()')
         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: '() => F()')
-            IBlockStatement (1 statements) (OperationKind.BlockStatement, IsInvalid) (Syntax: 'F()')
-              IExpressionStatement (OperationKind.ExpressionStatement, IsInvalid) (Syntax: 'F()')
-                Expression: IInvocationExpression (void Program.F()) (OperationKind.InvocationExpression, Type: System.Void, IsInvalid) (Syntax: 'F()')
-                    Instance Receiver: null
+        Operand: 
+          IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null, IsInvalid) (Syntax: '() => F()')
+            IBlockStatement (1 statements) (OperationKind.BlockStatement, IsInvalid, IsImplicit) (Syntax: 'F()')
+              IExpressionStatement (OperationKind.ExpressionStatement, IsInvalid, IsImplicit) (Syntax: 'F()')
+                Expression: 
+                  IInvocationExpression (void Program.F()) (OperationKind.InvocationExpression, Type: System.Void, IsInvalid) (Syntax: 'F()')
+                    Instance Receiver: 
+                      null
                     Arguments(0)
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {

src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IAwaitExpression.cs

-// 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;
@@ -28,8 +28,10 @@ static async Task M()
 ";
             string expectedOperationTree = @"
 IAwaitExpression (OperationKind.AwaitExpression, Type: System.Void) (Syntax: 'await M2()')
-  Expression: IInvocationExpression (System.Threading.Tasks.Task C.M2()) (OperationKind.InvocationExpression, Type: System.Threading.Tasks.Task) (Syntax: 'M2()')
-      Instance Receiver: null
+  Expression: 
+    IInvocationExpression (System.Threading.Tasks.Task C.M2()) (OperationKind.InvocationExpression, Type: System.Threading.Tasks.Task) (Syntax: 'M2()')
+      Instance Receiver: 
+        null
       Arguments(0)
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
@@ -54,7 +56,8 @@ static async Task M(Task t)
 ";
             string expectedOperationTree = @"
 IAwaitExpression (OperationKind.AwaitExpression, Type: System.Void) (Syntax: 'await t')
-  Expression: IParameterReferenceExpression: t (OperationKind.ParameterReferenceExpression, Type: System.Threading.Tasks.Task) (Syntax: 't')
+  Expression: 
+    IParameterReferenceExpression: t (OperationKind.ParameterReferenceExpression, Type: System.Threading.Tasks.Task) (Syntax: 't')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -80,7 +83,8 @@ static async Task M(Task<int> t)
 ";
             string expectedOperationTree = @"
 IAwaitExpression (OperationKind.AwaitExpression, Type: System.Int32) (Syntax: 'await t')
-  Expression: IParameterReferenceExpression: t (OperationKind.ParameterReferenceExpression, Type: System.Threading.Tasks.Task<System.Int32>) (Syntax: 't')
+  Expression: 
+    IParameterReferenceExpression: t (OperationKind.ParameterReferenceExpression, Type: System.Threading.Tasks.Task<System.Int32>) (Syntax: 't')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -105,7 +109,8 @@ static async Task M()
 ";
             string expectedOperationTree = @"
 IAwaitExpression (OperationKind.AwaitExpression, Type: ?, IsInvalid) (Syntax: 'await UndefinedTask')
-  Expression: IInvalidExpression (OperationKind.InvalidExpression, Type: ?, IsInvalid) (Syntax: 'UndefinedTask')
+  Expression: 
+    IInvalidExpression (OperationKind.InvalidExpression, Type: ?, IsInvalid) (Syntax: 'UndefinedTask')
       Children(0)
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
@@ -135,7 +140,8 @@ static async Task M(int i)
 ";
             string expectedOperationTree = @"
 IAwaitExpression (OperationKind.AwaitExpression, Type: ?, IsInvalid) (Syntax: 'await i')
-  Expression: IParameterReferenceExpression: i (OperationKind.ParameterReferenceExpression, Type: System.Int32, IsInvalid) (Syntax: 'i')
+  Expression: 
+    IParameterReferenceExpression: i (OperationKind.ParameterReferenceExpression, Type: System.Int32, IsInvalid) (Syntax: 'i')
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS1061: 'int' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'int' could be found (are you missing a using directive or an assembly reference?)
@@ -164,7 +170,8 @@ static async Task M()
 ";
             string expectedOperationTree = @"
 IAwaitExpression (OperationKind.AwaitExpression, Type: ?, IsInvalid) (Syntax: 'await /*</bind>*/')
-  Expression: IInvalidExpression (OperationKind.InvalidExpression, Type: null, IsInvalid) (Syntax: '')
+  Expression: 
+    IInvalidExpression (OperationKind.InvalidExpression, Type: null, IsInvalid) (Syntax: '')
       Children(0)
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
@@ -196,7 +203,8 @@ static void M(Task<int> t)
 IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclarationStatement, IsInvalid) (Syntax: 'await t;')
   IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration, IsInvalid) (Syntax: 't')
     Variables: Local_1: await t
-    Initializer: null
+    Initializer: 
+      null
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS0246: The type or namespace name 'await' could not be found (are you missing a using directive or an assembly reference?)

src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IConditionalAccessExpression.cs

-// 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;
@@ -27,9 +27,12 @@ public void M()
 ";
             string expectedOperationTree = @"
 IConditionalAccessExpression (OperationKind.ConditionalAccessExpression, Type: System.String) (Syntax: 'o?.ToString()')
-  Expression: ILocalReferenceExpression: o (OperationKind.LocalReferenceExpression, Type: System.Object) (Syntax: 'o')
-  WhenNotNull: IInvocationExpression (virtual System.String System.Object.ToString()) (OperationKind.InvocationExpression, Type: System.String) (Syntax: '.ToString()')
-      Instance Receiver: IConditionalAccessInstanceExpression (OperationKind.ConditionalAccessInstanceExpression, Type: System.Object) (Syntax: 'o')
+  Expression: 
+    ILocalReferenceExpression: o (OperationKind.LocalReferenceExpression, Type: System.Object) (Syntax: 'o')
+  WhenNotNull: 
+    IInvocationExpression (virtual System.String System.Object.ToString()) (OperationKind.InvocationExpression, Type: System.String) (Syntax: '.ToString()')
+      Instance Receiver: 
+        IConditionalAccessInstanceExpression (OperationKind.ConditionalAccessInstanceExpression, Type: System.Object, IsImplicit) (Syntax: 'o')
       Arguments(0)
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
@@ -56,9 +59,12 @@ public void M()
 ";
             string expectedOperationTree = @"
 IConditionalAccessExpression (OperationKind.ConditionalAccessExpression, Type: System.Int32?) (Syntax: 'c1?.Prop1')
-  Expression: ILocalReferenceExpression: c1 (OperationKind.LocalReferenceExpression, Type: C1) (Syntax: 'c1')
-  WhenNotNull: IPropertyReferenceExpression: System.Int32 C1.Prop1 { get; } (OperationKind.PropertyReferenceExpression, Type: System.Int32) (Syntax: '.Prop1')
-      Instance Receiver: IConditionalAccessInstanceExpression (OperationKind.ConditionalAccessInstanceExpression, Type: C1) (Syntax: 'c1')
+  Expression: 
+    ILocalReferenceExpression: c1 (OperationKind.LocalReferenceExpression, Type: C1) (Syntax: 'c1')
+  WhenNotNull: 
+    IPropertyReferenceExpression: System.Int32 C1.Prop1 { get; } (OperationKind.PropertyReferenceExpression, Type: System.Int32) (Syntax: '.Prop1')
+      Instance Receiver: 
+        IConditionalAccessInstanceExpression (OperationKind.ConditionalAccessInstanceExpression, Type: C1, IsImplicit) (Syntax: 'c1')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 

src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IDynamicIndexerAccessExpression.cs

-// 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;
@@ -25,7 +25,8 @@ void M(C c, dynamic d)
 ";
             string expectedOperationTree = @"
 IDynamicIndexerAccessExpression (OperationKind.DynamicIndexerAccessExpression, Type: dynamic) (Syntax: 'c[d]')
-  Expression: IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: C) (Syntax: 'c')
+  Expression: 
+    IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: C) (Syntax: 'c')
   Arguments(1):
       IParameterReferenceExpression: d (OperationKind.ParameterReferenceExpression, Type: dynamic) (Syntax: 'd')
   ArgumentNames(0)
@@ -55,7 +56,8 @@ void M(C c, dynamic d)
 ";
             string expectedOperationTree = @"
 IDynamicIndexerAccessExpression (OperationKind.DynamicIndexerAccessExpression, Type: dynamic) (Syntax: 'c[d]')
-  Expression: IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: C) (Syntax: 'c')
+  Expression: 
+    IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: C) (Syntax: 'c')
   Arguments(1):
       IParameterReferenceExpression: d (OperationKind.ParameterReferenceExpression, Type: dynamic) (Syntax: 'd')
   ArgumentNames(0)
@@ -86,7 +88,8 @@ void M(C c, dynamic d)
 ";
             string expectedOperationTree = @"
 IDynamicIndexerAccessExpression (OperationKind.DynamicIndexerAccessExpression, Type: dynamic) (Syntax: 'c[d, ch]')
-  Expression: IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: C) (Syntax: 'c')
+  Expression: 
+    IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: C) (Syntax: 'c')
   Arguments(2):
       IParameterReferenceExpression: d (OperationKind.ParameterReferenceExpression, Type: dynamic) (Syntax: 'd')
       ILocalReferenceExpression: ch (OperationKind.LocalReferenceExpression, Type: System.Char) (Syntax: 'ch')
@@ -117,7 +120,8 @@ void M(C c, dynamic d, dynamic e)
 ";
             string expectedOperationTree = @"
 IDynamicIndexerAccessExpression (OperationKind.DynamicIndexerAccessExpression, Type: dynamic) (Syntax: 'c[i: d, ch: e]')
-  Expression: IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: C) (Syntax: 'c')
+  Expression: 
+    IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: C) (Syntax: 'c')
   Arguments(2):
       IParameterReferenceExpression: d (OperationKind.ParameterReferenceExpression, Type: dynamic) (Syntax: 'd')
       IParameterReferenceExpression: e (OperationKind.ParameterReferenceExpression, Type: dynamic) (Syntax: 'e')
@@ -148,7 +152,8 @@ void M(C c, dynamic d, dynamic e)
 ";
             string expectedOperationTree = @"
 IDynamicIndexerAccessExpression (OperationKind.DynamicIndexerAccessExpression, Type: dynamic) (Syntax: 'c[i: d, ch: ref e]')
-  Expression: IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: C) (Syntax: 'c')
+  Expression: 
+    IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: C) (Syntax: 'c')
   Arguments(2):
       IParameterReferenceExpression: d (OperationKind.ParameterReferenceExpression, Type: dynamic) (Syntax: 'd')
       IParameterReferenceExpression: e (OperationKind.ParameterReferenceExpression, Type: dynamic) (Syntax: 'e')
@@ -183,7 +188,8 @@ void M(dynamic d, int i)
 ";
             string expectedOperationTree = @"
 IDynamicIndexerAccessExpression (OperationKind.DynamicIndexerAccessExpression, Type: dynamic) (Syntax: 'd[i]')
-  Expression: IParameterReferenceExpression: d (OperationKind.ParameterReferenceExpression, Type: dynamic) (Syntax: 'd')
+  Expression: 
+    IParameterReferenceExpression: d (OperationKind.ParameterReferenceExpression, Type: dynamic) (Syntax: 'd')
   Arguments(1):
       IParameterReferenceExpression: i (OperationKind.ParameterReferenceExpression, Type: System.Int32) (Syntax: 'i')
   ArgumentNames(0)
@@ -209,9 +215,11 @@ void M(dynamic c, int i)
 ";
             string expectedOperationTree = @"
 IDynamicIndexerAccessExpression (OperationKind.DynamicIndexerAccessExpression, Type: dynamic) (Syntax: 'c.M2[i]')
-  Expression: IDynamicMemberReferenceExpression (Member Name: ""M2"", Containing Type: null) (OperationKind.DynamicMemberReferenceExpression, Type: dynamic) (Syntax: 'c.M2')
+  Expression: 
+    IDynamicMemberReferenceExpression (Member Name: ""M2"", Containing Type: null) (OperationKind.DynamicMemberReferenceExpression, Type: dynamic) (Syntax: 'c.M2')
       Type Arguments(0)
-      Instance Receiver: IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: dynamic) (Syntax: 'c')
+      Instance Receiver: 
+        IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: dynamic) (Syntax: 'c')
   Arguments(1):
       IParameterReferenceExpression: i (OperationKind.ParameterReferenceExpression, Type: System.Int32) (Syntax: 'i')
   ArgumentNames(0)
@@ -239,8 +247,10 @@ void M(C c, int i)
 ";
             string expectedOperationTree = @"
 IDynamicIndexerAccessExpression (OperationKind.DynamicIndexerAccessExpression, Type: dynamic) (Syntax: 'c.M2[i]')
-  Expression: IFieldReferenceExpression: dynamic C.M2 (OperationKind.FieldReferenceExpression, Type: dynamic) (Syntax: 'c.M2')
-      Instance Receiver: IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: C) (Syntax: 'c')
+  Expression: 
+    IFieldReferenceExpression: dynamic C.M2 (OperationKind.FieldReferenceExpression, Type: dynamic) (Syntax: 'c.M2')
+      Instance Receiver: 
+        IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: C) (Syntax: 'c')
   Arguments(1):
       IParameterReferenceExpression: i (OperationKind.ParameterReferenceExpression, Type: System.Int32) (Syntax: 'i')
   ArgumentNames(0)
@@ -270,7 +280,8 @@ void M(C c, dynamic d)
 ";
             string expectedOperationTree = @"
 IDynamicIndexerAccessExpression (OperationKind.DynamicIndexerAccessExpression, Type: dynamic) (Syntax: 'c[ref i, c: d]')
-  Expression: IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: C) (Syntax: 'c')
+  Expression: 
+    IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: C) (Syntax: 'c')
   Arguments(2):
       ILocalReferenceExpression: i (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'i')
       IParameterReferenceExpression: d (OperationKind.ParameterReferenceExpression, Type: dynamic) (Syntax: 'd')
@@ -313,12 +324,14 @@ public void M(C c)
 ";
             string expectedOperationTree = @"
 IDynamicIndexerAccessExpression (OperationKind.DynamicIndexerAccessExpression, Type: dynamic, IsInvalid) (Syntax: 'c[delegate { }, y]')
-  Expression: IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: C) (Syntax: 'c')
+  Expression: 
+    IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: C) (Syntax: 'c')
   Arguments(2):
       IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null, IsInvalid) (Syntax: 'delegate { }')
         IBlockStatement (1 statements) (OperationKind.BlockStatement, IsInvalid) (Syntax: '{ }')
-          IReturnStatement (OperationKind.ReturnStatement, IsInvalid) (Syntax: '{ }')
-            ReturnedValue: null
+          IReturnStatement (OperationKind.ReturnStatement, IsInvalid, IsImplicit) (Syntax: '{ }')
+            ReturnedValue: 
+              null
       ILocalReferenceExpression: y (OperationKind.LocalReferenceExpression, Type: dynamic) (Syntax: 'y')
   ArgumentNames(0)
   ArgumentRefKinds(0)
@@ -352,7 +365,8 @@ void M(C c, dynamic d)
 ";
             string expectedOperationTree = @"
 IPropertyReferenceExpression: System.Int32 C.this { } (OperationKind.PropertyReferenceExpression, Type: System.Int32, IsInvalid) (Syntax: 'c[d]')
-  Instance Receiver: IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: C, IsInvalid) (Syntax: 'c')
+  Instance Receiver: 
+    IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: C, IsInvalid) (Syntax: 'c')
   Arguments(1):
       IArgument (ArgumentKind.Explicit, Matching Parameter: null) (OperationKind.Argument, IsInvalid) (Syntax: 'd')
         IParameterReferenceExpression: d (OperationKind.ParameterReferenceExpression, Type: dynamic, IsInvalid) (Syntax: 'd')

src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IDynamicInvocationExpression.cs

-// 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;
@@ -28,9 +28,11 @@ public void M2(int i)
 ";
             string expectedOperationTree = @"
 IDynamicInvocationExpression (OperationKind.DynamicInvocationExpression, Type: dynamic) (Syntax: 'c.M2(d)')
-  Expression: IDynamicMemberReferenceExpression (Member Name: ""M2"", Containing Type: null) (OperationKind.DynamicMemberReferenceExpression, Type: null) (Syntax: 'c.M2')
+  Expression: 
+    IDynamicMemberReferenceExpression (Member Name: ""M2"", Containing Type: null) (OperationKind.DynamicMemberReferenceExpression, Type: null) (Syntax: 'c.M2')
       Type Arguments(0)
-      Instance Receiver: IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: C) (Syntax: 'c')
+      Instance Receiver: 
+        IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: C) (Syntax: 'c')
   Arguments(1):
       IParameterReferenceExpression: d (OperationKind.ParameterReferenceExpression, Type: dynamic) (Syntax: 'd')
   ArgumentNames(0)
@@ -64,9 +66,11 @@ public void M2(long i)
 ";
             string expectedOperationTree = @"
 IDynamicInvocationExpression (OperationKind.DynamicInvocationExpression, Type: dynamic) (Syntax: 'c.M2(d)')
-  Expression: IDynamicMemberReferenceExpression (Member Name: ""M2"", Containing Type: null) (OperationKind.DynamicMemberReferenceExpression, Type: null) (Syntax: 'c.M2')
+  Expression: 
+    IDynamicMemberReferenceExpression (Member Name: ""M2"", Containing Type: null) (OperationKind.DynamicMemberReferenceExpression, Type: null) (Syntax: 'c.M2')
       Type Arguments(0)
-      Instance Receiver: IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: C) (Syntax: 'c')
+      Instance Receiver: 
+        IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: C) (Syntax: 'c')
   Arguments(1):
       IParameterReferenceExpression: d (OperationKind.ParameterReferenceExpression, Type: dynamic) (Syntax: 'd')
   ArgumentNames(0)
@@ -101,9 +105,11 @@ public void M2(long i, char ch)
 ";
             string expectedOperationTree = @"
 IDynamicInvocationExpression (OperationKind.DynamicInvocationExpression, Type: dynamic) (Syntax: 'c.M2(d, ch)')
-  Expression: IDynamicMemberReferenceExpression (Member Name: ""M2"", Containing Type: null) (OperationKind.DynamicMemberReferenceExpression, Type: null) (Syntax: 'c.M2')
+  Expression: 
+    IDynamicMemberReferenceExpression (Member Name: ""M2"", Containing Type: null) (OperationKind.DynamicMemberReferenceExpression, Type: null) (Syntax: 'c.M2')
       Type Arguments(0)
-      Instance Receiver: IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: C) (Syntax: 'c')
+      Instance Receiver: 
+        IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: C) (Syntax: 'c')
   Arguments(2):
       IParameterReferenceExpression: d (OperationKind.ParameterReferenceExpression, Type: dynamic) (Syntax: 'd')
       ILocalReferenceExpression: ch (OperationKind.LocalReferenceExpression, Type: System.Char) (Syntax: 'ch')
@@ -138,9 +144,11 @@ public void M2(long i, char ch)
 ";
             string expectedOperationTree = @"
 IDynamicInvocationExpression (OperationKind.DynamicInvocationExpression, Type: dynamic) (Syntax: 'c.M2(i: d, ch: e)')
-  Expression: IDynamicMemberReferenceExpression (Member Name: ""M2"", Containing Type: null) (OperationKind.DynamicMemberReferenceExpression, Type: null) (Syntax: 'c.M2')
+  Expression: 
+    IDynamicMemberReferenceExpression (Member Name: ""M2"", Containing Type: null) (OperationKind.DynamicMemberReferenceExpression, Type: null) (Syntax: 'c.M2')
       Type Arguments(0)
-      Instance Receiver: IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: C) (Syntax: 'c')
+      Instance Receiver: 
+        IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: C) (Syntax: 'c')
   Arguments(2):
       IParameterReferenceExpression: d (OperationKind.ParameterReferenceExpression, Type: dynamic) (Syntax: 'd')
       IParameterReferenceExpression: e (OperationKind.ParameterReferenceExpression, Type: dynamic) (Syntax: 'e')
@@ -175,9 +183,11 @@ public void M2(ref object i, out int j, char c)
 ";
             string expectedOperationTree = @"
 IDynamicInvocationExpression (OperationKind.DynamicInvocationExpression, Type: dynamic) (Syntax: 'c.M2(ref d, out k, e)')
-  Expression: IDynamicMemberReferenceExpression (Member Name: ""M2"", Containing Type: null) (OperationKind.DynamicMemberReferenceExpression, Type: null) (Syntax: 'c.M2')
+  Expression: 
+    IDynamicMemberReferenceExpression (Member Name: ""M2"", Containing Type: null) (OperationKind.DynamicMemberReferenceExpression, Type: null) (Syntax: 'c.M2')
       Type Arguments(0)
-      Instance Receiver: IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: C) (Syntax: 'c')
+      Instance Receiver: 
+        IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: C) (Syntax: 'c')
   Arguments(3):
       IParameterReferenceExpression: d (OperationKind.ParameterReferenceExpression, Type: System.Object) (Syntax: 'd')
       ILocalReferenceExpression: k (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'k')
@@ -211,8 +221,10 @@ void M(dynamic i)
 ";
             string expectedOperationTree = @"
 IDynamicInvocationExpression (OperationKind.DynamicInvocationExpression, Type: dynamic) (Syntax: 'F(i)')
-  Expression: IFieldReferenceExpression: System.Action<System.Object> C.F (OperationKind.FieldReferenceExpression, Type: System.Action<System.Object>) (Syntax: 'F')
-      Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: C) (Syntax: 'F')
+  Expression: 
+    IFieldReferenceExpression: System.Action<System.Object> C.F (OperationKind.FieldReferenceExpression, Type: System.Action<System.Object>) (Syntax: 'F')
+      Instance Receiver: 
+        IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: C, IsImplicit) (Syntax: 'F')
   Arguments(1):
       IParameterReferenceExpression: i (OperationKind.ParameterReferenceExpression, Type: dynamic) (Syntax: 'i')
   ArgumentNames(0)
@@ -242,7 +254,8 @@ void M(dynamic d, int i)
 ";
             string expectedOperationTree = @"
 IDynamicInvocationExpression (OperationKind.DynamicInvocationExpression, Type: dynamic) (Syntax: 'd(i)')
-  Expression: IParameterReferenceExpression: d (OperationKind.ParameterReferenceExpression, Type: dynamic) (Syntax: 'd')
+  Expression: 
+    IParameterReferenceExpression: d (OperationKind.ParameterReferenceExpression, Type: dynamic) (Syntax: 'd')
   Arguments(1):
       IParameterReferenceExpression: i (OperationKind.ParameterReferenceExpression, Type: System.Int32) (Syntax: 'i')
   ArgumentNames(0)
@@ -268,9 +281,11 @@ void M(dynamic c, int i)
 ";
             string expectedOperationTree = @"
 IDynamicInvocationExpression (OperationKind.DynamicInvocationExpression, Type: dynamic) (Syntax: 'c.M2(i)')
-  Expression: IDynamicMemberReferenceExpression (Member Name: ""M2"", Containing Type: null) (OperationKind.DynamicMemberReferenceExpression, Type: dynamic) (Syntax: 'c.M2')
+  Expression: 
+    IDynamicMemberReferenceExpression (Member Name: ""M2"", Containing Type: null) (OperationKind.DynamicMemberReferenceExpression, Type: dynamic) (Syntax: 'c.M2')
       Type Arguments(0)
-      Instance Receiver: IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: dynamic) (Syntax: 'c')
+      Instance Receiver: 
+        IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: dynamic) (Syntax: 'c')
   Arguments(1):
       IParameterReferenceExpression: i (OperationKind.ParameterReferenceExpression, Type: System.Int32) (Syntax: 'i')
   ArgumentNames(0)
@@ -297,8 +312,10 @@ void M(C c, int i)
 ";
             string expectedOperationTree = @"
 IDynamicInvocationExpression (OperationKind.DynamicInvocationExpression, Type: dynamic) (Syntax: 'c.M2(i)')
-  Expression: IFieldReferenceExpression: dynamic C.M2 (OperationKind.FieldReferenceExpression, Type: dynamic) (Syntax: 'c.M2')
-      Instance Receiver: IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: C) (Syntax: 'c')
+  Expression: 
+    IFieldReferenceExpression: dynamic C.M2 (OperationKind.FieldReferenceExpression, Type: dynamic) (Syntax: 'c.M2')
+      Instance Receiver: 
+        IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: C) (Syntax: 'c')
   Arguments(1):
       IParameterReferenceExpression: i (OperationKind.ParameterReferenceExpression, Type: System.Int32) (Syntax: 'i')
   ArgumentNames(0)
@@ -333,9 +350,11 @@ public void M2(ref int i, long c)
 ";
             string expectedOperationTree = @"
 IDynamicInvocationExpression (OperationKind.DynamicInvocationExpression, Type: dynamic) (Syntax: 'c.M2(ref i, c: d)')
-  Expression: IDynamicMemberReferenceExpression (Member Name: ""M2"", Containing Type: null) (OperationKind.DynamicMemberReferenceExpression, Type: null) (Syntax: 'c.M2')
+  Expression: 
+    IDynamicMemberReferenceExpression (Member Name: ""M2"", Containing Type: null) (OperationKind.DynamicMemberReferenceExpression, Type: null) (Syntax: 'c.M2')
       Type Arguments(0)
-      Instance Receiver: IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: C) (Syntax: 'c')
+      Instance Receiver: 
+        IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: C) (Syntax: 'c')
   Arguments(2):
       ILocalReferenceExpression: i (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'i')
       IParameterReferenceExpression: d (OperationKind.ParameterReferenceExpression, Type: dynamic) (Syntax: 'd')
@@ -373,14 +392,17 @@ public void M2(Action a, Action y)
 ";
             string expectedOperationTree = @"
 IDynamicInvocationExpression (OperationKind.DynamicInvocationExpression, Type: dynamic, IsInvalid) (Syntax: 'c.M2(delegate { }, y)')
-  Expression: IDynamicMemberReferenceExpression (Member Name: ""M2"", Containing Type: null) (OperationKind.DynamicMemberReferenceExpression, Type: null) (Syntax: 'c.M2')
+  Expression: 
+    IDynamicMemberReferenceExpression (Member Name: ""M2"", Containing Type: null) (OperationKind.DynamicMemberReferenceExpression, Type: null) (Syntax: 'c.M2')
       Type Arguments(0)
-      Instance Receiver: IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: C) (Syntax: 'c')
+      Instance Receiver: 
+        IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: C) (Syntax: 'c')
   Arguments(2):
       IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null, IsInvalid) (Syntax: 'delegate { }')
         IBlockStatement (1 statements) (OperationKind.BlockStatement, IsInvalid) (Syntax: '{ }')
-          IReturnStatement (OperationKind.ReturnStatement, IsInvalid) (Syntax: '{ }')
-            ReturnedValue: null
+          IReturnStatement (OperationKind.ReturnStatement, IsInvalid, IsImplicit) (Syntax: '{ }')
+            ReturnedValue: 
+              null
       ILocalReferenceExpression: y (OperationKind.LocalReferenceExpression, Type: dynamic) (Syntax: 'y')
   ArgumentNames(0)
   ArgumentRefKinds(0)
@@ -417,7 +439,8 @@ public void M2(int i, int j)
 ";
             string expectedOperationTree = @"
 IInvocationExpression ( void C.M2()) (OperationKind.InvocationExpression, Type: System.Void, IsInvalid) (Syntax: 'c.M2(d)')
-  Instance Receiver: IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: C, IsInvalid) (Syntax: 'c')
+  Instance Receiver: 
+    IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: C, IsInvalid) (Syntax: 'c')
   Arguments(1):
       IArgument (ArgumentKind.Explicit, Matching Parameter: null) (OperationKind.Argument, IsInvalid) (Syntax: 'd')
         IParameterReferenceExpression: d (OperationKind.ParameterReferenceExpression, Type: dynamic, IsInvalid) (Syntax: 'd')

src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IDynamicObjectCreationExpression.cs

-// 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;
@@ -32,7 +32,8 @@ void M(dynamic d)
       IParameterReferenceExpression: d (OperationKind.ParameterReferenceExpression, Type: dynamic) (Syntax: 'd')
   ArgumentNames(0)
   ArgumentRefKinds(0)
-  Initializer: null
+  Initializer: 
+    null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -66,7 +67,8 @@ void M(dynamic d)
       IParameterReferenceExpression: d (OperationKind.ParameterReferenceExpression, Type: dynamic) (Syntax: 'd')
   ArgumentNames(0)
   ArgumentRefKinds(0)
-  Initializer: null
+  Initializer: 
+    null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -102,7 +104,8 @@ void M(dynamic d)
       ILocalReferenceExpression: c (OperationKind.LocalReferenceExpression, Type: System.Char) (Syntax: 'c')
   ArgumentNames(0)
   ArgumentRefKinds(0)
-  Initializer: null
+  Initializer: 
+    null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -139,7 +142,8 @@ void M(dynamic d, dynamic e)
     ""i""
     ""c""
   ArgumentRefKinds(0)
-  Initializer: null
+  Initializer: 
+    null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -176,7 +180,8 @@ void M(object d, dynamic e)
     Ref
     Out
     None
-  Initializer: null
+  Initializer: 
+    null
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -208,12 +213,16 @@ void M(dynamic d)
       IParameterReferenceExpression: d (OperationKind.ParameterReferenceExpression, Type: dynamic) (Syntax: 'd')
   ArgumentNames(0)
   ArgumentRefKinds(0)
-  Initializer: IObjectOrCollectionInitializerExpression (OperationKind.ObjectOrCollectionInitializerExpression, Type: C) (Syntax: '{ X = 0 }')
+  Initializer: 
+    IObjectOrCollectionInitializerExpression (OperationKind.ObjectOrCollectionInitializerExpression, Type: C) (Syntax: '{ X = 0 }')
       Initializers(1):
           ISimpleAssignmentExpression (OperationKind.SimpleAssignmentExpression, Type: System.Int32) (Syntax: 'X = 0')
-            Left: IFieldReferenceExpression: System.Int32 C.X (OperationKind.FieldReferenceExpression, Type: System.Int32) (Syntax: 'X')
-                Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: C) (Syntax: 'X')
-            Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
+            Left: 
+              IFieldReferenceExpression: System.Int32 C.X (OperationKind.FieldReferenceExpression, Type: System.Int32) (Syntax: 'X')
+                Instance Receiver: 
+                  IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: C) (Syntax: 'X')
+            Right: 
+              ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -255,12 +264,16 @@ void M(dynamic d)
   ArgumentRefKinds(2):
     Ref
     None
-  Initializer: IObjectOrCollectionInitializerExpression (OperationKind.ObjectOrCollectionInitializerExpression, Type: C) (Syntax: '{ X = 0 }')
+  Initializer: 
+    IObjectOrCollectionInitializerExpression (OperationKind.ObjectOrCollectionInitializerExpression, Type: C) (Syntax: '{ X = 0 }')
       Initializers(1):
           ISimpleAssignmentExpression (OperationKind.SimpleAssignmentExpression, Type: System.Int32) (Syntax: 'X = 0')
-            Left: IFieldReferenceExpression: System.Int32 C.X (OperationKind.FieldReferenceExpression, Type: System.Int32) (Syntax: 'X')
-                Instance Receiver: IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: C) (Syntax: 'X')
-            Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
+            Left: 
+              IFieldReferenceExpression: System.Int32 C.X (OperationKind.FieldReferenceExpression, Type: System.Int32) (Syntax: 'X')
+                Instance Receiver: 
+                  IInstanceReferenceExpression (OperationKind.InstanceReferenceExpression, Type: C) (Syntax: 'X')
+            Right: 
+              ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
 ";
             var expectedDiagnostics = DiagnosticDescription.None;
 
@@ -292,12 +305,14 @@ public C(Action a, Action y)
   Arguments(2):
       IAnonymousFunctionExpression (Symbol: lambda expression) (OperationKind.AnonymousFunctionExpression, Type: null, IsInvalid) (Syntax: 'delegate { }')
         IBlockStatement (1 statements) (OperationKind.BlockStatement, IsInvalid) (Syntax: '{ }')
-          IReturnStatement (OperationKind.ReturnStatement, IsInvalid) (Syntax: '{ }')
-            ReturnedValue: null
+          IReturnStatement (OperationKind.ReturnStatement, IsInvalid, IsImplicit) (Syntax: '{ }')
+            ReturnedValue: 
+              null
       ILocalReferenceExpression: y (OperationKind.LocalReferenceExpression, Type: dynamic) (Syntax: 'y')
   ArgumentNames(0)
   ArgumentRefKinds(0)
-  Initializer: null
+  Initializer: 
+    null
 ";
             var expectedDiagnostics = new DiagnosticDescription[] {
                 // CS1977: Cannot use a lambda expression as an argument to a dynamically dispatched operation without first casting it to a delegate or expression tree type.

src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_IInstanceReferenceTests.cs

-// 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;

src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_ILocalReferenceExpression.cs

-// 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;