Fix VB IConversionExpression bug.

779d32b3 · Fredric Silberberg · c7054db5 · 779d32b3 · 779d32b3 · 779d32b3
16 changed file
--- a/src/Compilers/VisualBasic/Portable/Operations/VisualBasicConversionExpression.vb
+++ b/src/Compilers/VisualBasic/Portable/Operations/VisualBasicConversionExpression.vb
@@ -15,7 +15,11 @@ Namespace Microsoft.CodeAnalysis.VisualBasic

        Friend ReadOnly Property ConversionInternal As Conversion

-        Public Overrides ReadOnly Property Conversion As CommonConversion = ConversionInternal.ToCommonConversion()
+        Public Overrides ReadOnly Property Conversion As CommonConversion
+            Get
+                Return ConversionInternal.ToCommonConversion()
+            End Get
+        End Property
    End Class

    Friend NotInheritable Class VisualBasicConversionExpression

--- a/src/Compilers/VisualBasic/Test/Semantic/IOperation/IOperationTests.vb
+++ b/src/Compilers/VisualBasic/Test/Semantic/IOperation/IOperationTests.vb
@@ -282,7 +282,7 @@ IForLoopStatement (LoopKind.For) (OperationKind.LoopStatement) (Syntax: 'For i =
        Expression: ICompoundAssignmentExpression (BinaryOperationKind.IntegerAdd) (OperationKind.CompoundAssignmentExpression, Type: System.Int32) (Syntax: 'For i = 0 T ... Next')
            Left: ILocalReferenceExpression: i (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'i')
            Right: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32, Constant: 1) (Syntax: 'For i = 0 T ... Next')
-                Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+                Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
                Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1) (Syntax: 'For i = 0 T ... Next')
  Body: IBlockStatement (1 statements) (OperationKind.BlockStatement) (Syntax: 'For i = 0 T ... Next')
      IExpressionStatement (OperationKind.ExpressionStatement) (Syntax: 'System.Console.Write(i)')
@@ -352,7 +352,7 @@ BC30581: 'AddressOf' expression cannot be converted to 'Integer' because 'Intege
  Arguments(1):
      IArgument (ArgumentKind.Explicit, Matching Parameter: x) (OperationKind.Argument) (Syntax: 'Nothing')
        IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32(), Constant: null) (Syntax: 'Nothing')
-          Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+          Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
          Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: null, Constant: null) (Syntax: 'Nothing')
        InConversion: null
        OutConversion: null")

--- a/src/Compilers/VisualBasic/Test/Semantic/IOperation/IOperationTests_IArgument.vb
+++ b/src/Compilers/VisualBasic/Test/Semantic/IOperation/IOperationTests_IArgument.vb
-' 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.

 Imports Microsoft.CodeAnalysis.VisualBasic.Syntax
 Imports Microsoft.CodeAnalysis.Test.Utilities
@@ -420,7 +420,7 @@ IInvocationExpression ( Sub Program.M2([ByRef a As System.Int32 = 0])) (Operatio
  Arguments(1):
      IArgument (ArgumentKind.Explicit, Matching Parameter: a) (OperationKind.Argument) (Syntax: '1.0')
        IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32, Constant: 1) (Syntax: '1.0')
-          Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+          Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
          Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Double, Constant: 1) (Syntax: '1.0')
        InConversion: null
        OutConversion: null
@@ -452,10 +452,10 @@ IInvocationExpression ( Sub Program.M2([ByRef a As System.Int32 = 0])) (Operatio
      IArgument (ArgumentKind.Explicit, Matching Parameter: a) (OperationKind.Argument) (Syntax: 'x')
        ILocalReferenceExpression: x (OperationKind.LocalReferenceExpression, Type: System.Double) (Syntax: 'x')
        InConversion: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32) (Syntax: 'x')
-            Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+            Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
            Operand: IOperation:  (OperationKind.None) (Syntax: 'x')
        OutConversion: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Double) (Syntax: 'x')
-            Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+            Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
            Operand: IPlaceholderExpression (OperationKind.PlaceholderExpression, Type: System.Int32) (Syntax: 'x')
 ]]>.Value


--- a/src/Compilers/VisualBasic/Test/Semantic/IOperation/IOperationTests_IConversionExpression.vb
+++ b/src/Compilers/VisualBasic/Test/Semantic/IOperation/IOperationTests_IConversionExpression.vb
--- a/src/Compilers/VisualBasic/Test/Semantic/IOperation/IOperationTests_IDynamicMemberReferenceExpression.vb
+++ b/src/Compilers/VisualBasic/Test/Semantic/IOperation/IOperationTests_IDynamicMemberReferenceExpression.vb
-' 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.

 Imports Microsoft.CodeAnalysis.VisualBasic.Syntax
 Imports Microsoft.CodeAnalysis.Test.Utilities
@@ -137,7 +137,7 @@ IOperation:  (OperationKind.None, IsInvalid) (Syntax: 'd.F(')
        Type Arguments(0)
        Instance Receiver: ILocalReferenceExpression: d (OperationKind.LocalReferenceExpression, Type: System.Object) (Syntax: 'd')
      IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object, IsInvalid) (Syntax: '')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+        Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
        Operand: IInvalidExpression (OperationKind.InvalidExpression, Type: ?, IsInvalid) (Syntax: '')
            Children(0)
 ]]>.Value

--- a/src/Compilers/VisualBasic/Test/Semantic/IOperation/IOperationTests_IForEachLoopStatement.vb
+++ b/src/Compilers/VisualBasic/Test/Semantic/IOperation/IOperationTests_IForEachLoopStatement.vb
@@ -30,7 +30,7 @@ End Class
            Dim expectedOperationTree = <![CDATA[
 IForEachLoopStatement (Iteration variable: null) (LoopKind.ForEach) (OperationKind.LoopStatement) (Syntax: 'For Each s  ... Next')
  Collection: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Collections.IEnumerable) (Syntax: 'arr')
-      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
      Operand: ILocalReferenceExpression: arr (OperationKind.LocalReferenceExpression, Type: System.String()) (Syntax: 'arr')
  Body: IBlockStatement (1 statements) (OperationKind.BlockStatement) (Syntax: 'For Each s  ... Next')
      IExpressionStatement (OperationKind.ExpressionStatement) (Syntax: 'Console.WriteLine(s)')
@@ -148,7 +148,7 @@ End Class
            Dim expectedOperationTree = <![CDATA[
 IForEachLoopStatement (Iteration variable: null) (LoopKind.ForEach) (OperationKind.LoopStatement) (Syntax: 'For Each x  ... Next y, x')
  Collection: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Collections.IEnumerable) (Syntax: 'S')
-      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
      Operand: ILocalReferenceExpression: S (OperationKind.LocalReferenceExpression, Type: System.String()) (Syntax: 'S')
  Body: IBlockStatement (1 statements) (OperationKind.BlockStatement) (Syntax: 'For Each x  ... Next y, x')
      IForEachLoopStatement (Iteration variable: null) (LoopKind.ForEach) (OperationKind.LoopStatement) (Syntax: 'For Each y  ... Next y, x')
@@ -198,7 +198,7 @@ End Class
            Dim expectedOperationTree = <![CDATA[
 IForEachLoopStatement (Iteration variable: null) (LoopKind.ForEach) (OperationKind.LoopStatement) (Syntax: 'For Each y  ... Next')
  Collection: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Collections.IEnumerable) (Syntax: 'x')
-      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
      Operand: ILocalReferenceExpression: x (OperationKind.LocalReferenceExpression, Type: System.Int32()) (Syntax: 'x')
  Body: IBlockStatement (1 statements) (OperationKind.BlockStatement) (Syntax: 'For Each y  ... Next')
      IExpressionStatement (OperationKind.ExpressionStatement) (Syntax: 'System.Cons ... riteLine(y)')
@@ -234,7 +234,7 @@ End Class
            Dim expectedOperationTree = <![CDATA[
 IForEachLoopStatement (Iteration variable: null) (LoopKind.ForEach) (OperationKind.LoopStatement) (Syntax: 'For Each x  ... Next')
  Collection: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Collections.IEnumerable) (Syntax: 'S')
-      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
      Operand: ILocalReferenceExpression: S (OperationKind.LocalReferenceExpression, Type: System.String()) (Syntax: 'S')
  Body: IBlockStatement (1 statements) (OperationKind.BlockStatement) (Syntax: 'For Each x  ... Next')
      IForEachLoopStatement (Iteration variable: null) (LoopKind.ForEach) (OperationKind.LoopStatement) (Syntax: 'For Each y  ... Next')
@@ -282,7 +282,7 @@ End Class
            Dim expectedOperationTree = <![CDATA[
 IForEachLoopStatement (Iteration variable: null) (LoopKind.ForEach) (OperationKind.LoopStatement) (Syntax: 'For Each x  ... Next')
  Collection: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Collections.IEnumerable) (Syntax: 'New Enumerable()')
-      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
      Operand: IObjectCreationExpression (Constructor: Sub Enumerable..ctor()) (OperationKind.ObjectCreationExpression, Type: Enumerable) (Syntax: 'New Enumerable()')
          Arguments(0)
          Initializer: null
@@ -356,7 +356,7 @@ End Structure
            Dim expectedOperationTree = <![CDATA[
 IForEachLoopStatement (Iteration variable: null) (LoopKind.ForEach) (OperationKind.LoopStatement) (Syntax: 'For Each x  ... Next')
  Collection: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Collections.IEnumerable) (Syntax: 'New Enumerable()')
-      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
      Operand: IObjectCreationExpression (Constructor: Sub Enumerable..ctor()) (OperationKind.ObjectCreationExpression, Type: Enumerable) (Syntax: 'New Enumerable()')
          Arguments(0)
          Initializer: null
@@ -439,7 +439,7 @@ IForEachLoopStatement (Iteration variable: null) (LoopKind.ForEach) (OperationKi
                            Instance Receiver: ILocalReferenceExpression: country (OperationKind.LocalReferenceExpression, Type: <anonymous type: Key CountryName As System.String, Key CustomersInCountry As System.Collections.Generic.IEnumerable(Of Customer), Key Count As System.Int32>) (Syntax: 'country')
                        Right: ILiteralExpression (OperationKind.LiteralExpression, Type: System.String, Constant: " count=") (Syntax: '" count="')
                    Right: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.String) (Syntax: 'country.Count')
-                        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+                        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
                        Operand: IPropertyReferenceExpression: ReadOnly Property <anonymous type: Key CountryName As System.String, Key CustomersInCountry As System.Collections.Generic.IEnumerable(Of Customer), Key Count As System.Int32>.Count As System.Int32 (OperationKind.PropertyReferenceExpression, Type: System.Int32) (Syntax: 'country.Count')
                            Instance Receiver: ILocalReferenceExpression: country (OperationKind.LocalReferenceExpression, Type: <anonymous type: Key CountryName As System.String, Key CustomersInCountry As System.Collections.Generic.IEnumerable(Of Customer), Key Count As System.Int32>) (Syntax: 'country')
                  InConversion: null
@@ -564,7 +564,7 @@ End Class
            Dim expectedOperationTree = <![CDATA[
 IForEachLoopStatement (Iteration variable: null) (LoopKind.ForEach) (OperationKind.LoopStatement) (Syntax: 'For Each x  ... Next')
  Collection: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Collections.IEnumerable) (Syntax: 'o')
-      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
      Operand: ILocalReferenceExpression: o (OperationKind.LocalReferenceExpression, Type: System.Object) (Syntax: 'o')
  Body: IBlockStatement (1 statements) (OperationKind.BlockStatement) (Syntax: 'For Each x  ... Next')
      IExpressionStatement (OperationKind.ExpressionStatement) (Syntax: 'Console.WriteLine(x)')
@@ -671,7 +671,7 @@ End Class
            Dim expectedOperationTree = <![CDATA[
 IForEachLoopStatement (Iteration variable: null) (LoopKind.ForEach) (OperationKind.LoopStatement) (Syntax: 'For Each el ... ambda_local')
  Collection: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Collections.IEnumerable) (Syntax: 'arr')
-      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
      Operand: ILocalReferenceExpression: arr (OperationKind.LocalReferenceExpression, Type: System.Int32()) (Syntax: 'arr')
  Body: IBlockStatement (1 statements) (OperationKind.BlockStatement) (Syntax: 'For Each el ... ambda_local')
      IExpressionStatement (OperationKind.ExpressionStatement) (Syntax: 'Console.Wri ... mbda_local)')
@@ -742,7 +742,7 @@ End Class
            Dim expectedOperationTree = <![CDATA[
 IForEachLoopStatement (Iteration variable: null) (LoopKind.ForEach) (OperationKind.LoopStatement) (Syntax: 'For Each s  ... Next')
  Collection: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Collections.IEnumerable) (Syntax: 'arr')
-      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
      Operand: ILocalReferenceExpression: arr (OperationKind.LocalReferenceExpression, Type: System.String()) (Syntax: 'arr')
  Body: IBlockStatement (2 statements) (OperationKind.BlockStatement) (Syntax: 'For Each s  ... Next')
      IIfStatement (OperationKind.IfStatement) (Syntax: 'If (s = "on ... End If')
@@ -787,14 +787,14 @@ End Class
            Dim expectedOperationTree = <![CDATA[
 IForEachLoopStatement (Iteration variable: null) (LoopKind.ForEach) (OperationKind.LoopStatement) (Syntax: 'For Each o  ... Next')
  Collection: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Collections.IEnumerable) (Syntax: 'c')
-      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
      Operand: IParameterReferenceExpression: c (OperationKind.ParameterReferenceExpression, Type: System.Object()) (Syntax: 'c')
  Body: IBlockStatement (1 statements) (OperationKind.BlockStatement) (Syntax: 'For Each o  ... Next')
      IIfStatement (OperationKind.IfStatement) (Syntax: 'If o IsNot  ... Return True')
        Condition: IBinaryOperatorExpression (BinaryOperationKind.ObjectNotEquals) (OperationKind.BinaryOperatorExpression, Type: System.Boolean) (Syntax: 'o IsNot Nothing')
            Left: ILocalReferenceExpression: o (OperationKind.LocalReferenceExpression, Type: System.Object) (Syntax: 'o')
            Right: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object, Constant: null) (Syntax: 'Nothing')
-                Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+                Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
                Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: null, Constant: null) (Syntax: 'Nothing')
        IfTrue: IBlockStatement (1 statements) (OperationKind.BlockStatement) (Syntax: 'If o IsNot  ... Return True')
            IReturnStatement (OperationKind.ReturnStatement) (Syntax: 'Return True')

--- a/src/Compilers/VisualBasic/Test/Semantic/IOperation/IOperationTests_IForLoopStatement.vb
+++ b/src/Compilers/VisualBasic/Test/Semantic/IOperation/IOperationTests_IForLoopStatement.vb
--- a/src/Compilers/VisualBasic/Test/Semantic/IOperation/IOperationTests_IObjectCreationExpression.vb
+++ b/src/Compilers/VisualBasic/Test/Semantic/IOperation/IOperationTests_IObjectCreationExpression.vb
-' 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.

 Imports Microsoft.CodeAnalysis.VisualBasic.Syntax
 Imports Microsoft.CodeAnalysis.Test.Utilities
@@ -209,7 +209,7 @@ IObjectCreationExpression (Constructor: Sub System.Collections.Generic.List(Of S
            Arguments(1):
                IInvocationExpression ( Function System.Collections.Generic.IEnumerable(Of System.Int32).ToList() As System.Collections.Generic.List(Of System.Int32)) (OperationKind.InvocationExpression, Type: System.Collections.Generic.List(Of System.Int32)) (Syntax: '{x, y}.ToList')
                  Instance Receiver: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Collections.Generic.IEnumerable(Of System.Int32)) (Syntax: '{x, y}')
-                      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+                      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: '{x, y}')
                          Dimension Sizes(1):
                              ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 2) (Syntax: '{x, y}')

--- a/src/Compilers/VisualBasic/Test/Semantic/IOperation/IOperationTests_IParameterReferenceExpression.vb
+++ b/src/Compilers/VisualBasic/Test/Semantic/IOperation/IOperationTests_IParameterReferenceExpression.vb
-' 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.

 Imports Microsoft.CodeAnalysis.Semantics
 Imports Microsoft.CodeAnalysis.Test.Utilities
@@ -95,7 +95,7 @@ IOperation:  (OperationKind.None) (Syntax: 'From cust I ... t cust.Name')
        Children(1):
            IInvocationExpression ( Function System.Collections.Generic.IEnumerable(Of Customer).Select(Of System.String)(selector As System.Func(Of Customer, System.String)) As System.Collections.Generic.IEnumerable(Of System.String)) (OperationKind.InvocationExpression, Type: System.Collections.Generic.IEnumerable(Of System.String)) (Syntax: 'Select cust.Name')
              Instance Receiver: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Collections.Generic.IEnumerable(Of Customer)) (Syntax: 'cust In customers')
-                  Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+                  Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
                  Operand: IOperation:  (OperationKind.None) (Syntax: 'cust In customers')
                      Children(1):
                          IOperation:  (OperationKind.None) (Syntax: 'customers')
@@ -104,7 +104,7 @@ IOperation:  (OperationKind.None) (Syntax: 'From cust I ... t cust.Name')
              Arguments(1):
                  IArgument (ArgumentKind.DefaultValue, Matching Parameter: selector) (OperationKind.Argument) (Syntax: 'cust.Name')
                    IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Func(Of Customer, System.String)) (Syntax: 'cust.Name')
-                      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+                      Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
                      Operand: IOperation:  (OperationKind.None) (Syntax: 'cust.Name')
                          Children(1):
                              IOperation:  (OperationKind.None) (Syntax: 'cust.Name')
@@ -149,7 +149,7 @@ IOperation:  (OperationKind.None) (Syntax: 'Aggregate y ... nto Count()')
                    Children(1):
                        IInvocationExpression ( Function System.Collections.Generic.IEnumerable(Of System.Int32).Count() As System.Int32) (OperationKind.InvocationExpression, Type: System.Int32) (Syntax: 'Count()')
                          Instance Receiver: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Collections.Generic.IEnumerable(Of System.Int32)) (Syntax: 'y In New Integer() {x}')
-                              Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+                              Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
                              Operand: IOperation:  (OperationKind.None) (Syntax: 'y In New Integer() {x}')
                                  Children(1):
                                      IOperation:  (OperationKind.None) (Syntax: 'New Integer() {x}')
@@ -188,7 +188,7 @@ End Class]]>.Value

            Dim expectedOperationTree = <![CDATA[
 IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object) (Syntax: 'From y In x ... By y.Length')
-  Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+  Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
  Operand: IOperation:  (OperationKind.None) (Syntax: 'From y In x ... By y.Length')
      Children(1):
          IOperation:  (OperationKind.None) (Syntax: 'Order By y.Length')
@@ -197,7 +197,7 @@ IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.Conve
                  Children(1):
                      IInvocationExpression ( Function System.Collections.Generic.IEnumerable(Of System.String).OrderBy(Of System.Int32)(keySelector As System.Func(Of System.String, System.Int32)) As System.Linq.IOrderedEnumerable(Of System.String)) (OperationKind.InvocationExpression, Type: System.Linq.IOrderedEnumerable(Of System.String)) (Syntax: 'y.Length')
                        Instance Receiver: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Collections.Generic.IEnumerable(Of System.String)) (Syntax: 'y In x')
-                            Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+                            Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
                            Operand: IOperation:  (OperationKind.None) (Syntax: 'y In x')
                                Children(1):
                                    IOperation:  (OperationKind.None) (Syntax: 'x')
@@ -206,7 +206,7 @@ IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.Conve
                        Arguments(1):
                            IArgument (ArgumentKind.DefaultValue, Matching Parameter: keySelector) (OperationKind.Argument) (Syntax: 'y.Length')
                              IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Func(Of System.String, System.Int32)) (Syntax: 'y.Length')
-                                Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+                                Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
                                Operand: IOperation:  (OperationKind.None) (Syntax: 'y.Length')
                                    Children(1):
                                        IPropertyReferenceExpression: ReadOnly Property System.String.Length As System.Int32 (OperationKind.PropertyReferenceExpression, Type: System.Int32) (Syntax: 'y.Length')
@@ -245,7 +245,7 @@ IOperation:  (OperationKind.None) (Syntax: 'From y In x ... nto Count()')
        Children(1):
            IInvocationExpression ( Function System.Collections.Generic.IEnumerable(Of System.String).GroupBy(Of <anonymous type: Key w As System.String(), Key z As System.String>, <anonymous type: Key w As System.String(), Key z As System.String, Key Count As System.Int32>)(keySelector As System.Func(Of System.String, <anonymous type: Key w As System.String(), Key z As System.String>), resultSelector As System.Func(Of <anonymous type: Key w As System.String(), Key z As System.String>, System.Collections.Generic.IEnumerable(Of System.String), <anonymous type: Key w As System.String(), Key z As System.String, Key Count As System.Int32>)) As System.Collections.Generic.IEnumerable(Of <anonymous type: Key w As System.String(), Key z As System.String, Key Count As System.Int32>)) (OperationKind.InvocationExpression, Type: System.Collections.Generic.IEnumerable(Of <anonymous type: Key w As System.String(), Key z As System.String, Key Count As System.Int32>)) (Syntax: 'Group By w  ... nto Count()')
              Instance Receiver: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Collections.Generic.IEnumerable(Of System.String)) (Syntax: 'y In x')
-                  Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+                  Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
                  Operand: IOperation:  (OperationKind.None) (Syntax: 'y In x')
                      Children(1):
                          IOperation:  (OperationKind.None) (Syntax: 'x')
@@ -254,7 +254,7 @@ IOperation:  (OperationKind.None) (Syntax: 'From y In x ... nto Count()')
              Arguments(2):
                  IArgument (ArgumentKind.DefaultValue, Matching Parameter: keySelector) (OperationKind.Argument) (Syntax: 'x')
                    IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Func(Of System.String, <anonymous type: Key w As System.String(), Key z As System.String>)) (Syntax: 'x')
-                      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+                      Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
                      Operand: IOperation:  (OperationKind.None) (Syntax: 'x')
                          Children(1):
                              IAnonymousObjectCreationExpression (OperationKind.AnonymousObjectCreationExpression, Type: <anonymous type: Key w As System.String(), Key z As System.String>) (Syntax: 'Group By w  ... nto Count()')
@@ -269,7 +269,7 @@ IOperation:  (OperationKind.None) (Syntax: 'From y In x ... nto Count()')
                    OutConversion: null
                  IArgument (ArgumentKind.DefaultValue, Matching Parameter: resultSelector) (OperationKind.Argument) (Syntax: 'Group By w  ... nto Count()')
                    IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Func(Of <anonymous type: Key w As System.String(), Key z As System.String>, System.Collections.Generic.IEnumerable(Of System.String), <anonymous type: Key w As System.String(), Key z As System.String, Key Count As System.Int32>)) (Syntax: 'Group By w  ... nto Count()')
-                      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+                      Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
                      Operand: IOperation:  (OperationKind.None) (Syntax: 'Group By w  ... nto Count()')
                          Children(1):
                              IAnonymousObjectCreationExpression (OperationKind.AnonymousObjectCreationExpression, Type: <anonymous type: Key w As System.String(), Key z As System.String, Key Count As System.Int32>) (Syntax: 'Group By w  ... nto Count()')
@@ -379,7 +379,7 @@ End Class]]>.Value

            Dim expectedOperationTree = <![CDATA[
 IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.EventHandler) (Syntax: 'New EventHa ... nction() x)')
-  Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+  Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
  Operand: ILambdaExpression (Signature: Function () As System.Object) (OperationKind.LambdaExpression, Type: null) (Syntax: 'Function() x')
      IBlockStatement (3 statements, 1 locals) (OperationKind.BlockStatement) (Syntax: 'Function() x')
        Locals: Local_1: <anonymous local> As System.Object
@@ -410,7 +410,7 @@ End Class]]>.Value

            Dim expectedOperationTree = <![CDATA[
 IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.EventHandler) (Syntax: 'New EventHa ... essOf Me.M)')
-  Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+  Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
  Operand: IOperation:  (OperationKind.None) (Syntax: 'AddressOf Me.M')
      Children(1):
          IInstanceReferenceExpression (InstanceReferenceKind.Explicit) (OperationKind.InstanceReferenceExpression, Type: Class1) (Syntax: 'Me')
@@ -514,7 +514,7 @@ IOperation:  (OperationKind.None) (Syntax: 'd(x)')
  Children(2):
      IParameterReferenceExpression: d (OperationKind.ParameterReferenceExpression, Type: System.Object) (Syntax: 'd')
      IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object) (Syntax: 'x')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
        Operand: IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Int32) (Syntax: 'x')
 ]]>.Value

@@ -568,7 +568,7 @@ IOperation:  (OperationKind.None) (Syntax: 'x(y)')
  Children(2):
      IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Object) (Syntax: 'x')
      IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object) (Syntax: 'y')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
        Operand: IParameterReferenceExpression: y (OperationKind.ParameterReferenceExpression, Type: System.Int32) (Syntax: 'y')
 ]]>.Value

@@ -726,7 +726,7 @@ IOperation:  (OperationKind.None) (Syntax: 'Erase x')
      ISimpleAssignmentExpression (OperationKind.SimpleAssignmentExpression, Type: System.Int32()) (Syntax: 'x')
        Left: IParameterReferenceExpression: x (OperationKind.ParameterReferenceExpression, Type: System.Int32()) (Syntax: 'x')
        Right: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32(), Constant: null) (Syntax: 'x')
-            Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+            Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
            Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: null, Constant: null) (Syntax: 'Erase x')
 ]]>.Value


--- a/src/Compilers/VisualBasic/Test/Semantic/IOperation/IOperationTests_ISymbolInitializer.vb
+++ b/src/Compilers/VisualBasic/Test/Semantic/IOperation/IOperationTests_ISymbolInitializer.vb
-' 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.

 Imports Microsoft.CodeAnalysis.Semantics
 Imports Microsoft.CodeAnalysis.Test.Utilities
@@ -129,7 +129,7 @@ End Class]]>.Value
            Dim expectedOperationTree = <![CDATA[
 IParameterInitializer (Parameter: [ParamArray p2 As System.Int32() = Nothing]) (OperationKind.ParameterInitializer) (Syntax: '= Nothing')
  IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32(), Constant: null) (Syntax: 'Nothing')
-    Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+    Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
    Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: null, Constant: null) (Syntax: 'Nothing')
 ]]>.Value


--- a/src/Compilers/VisualBasic/Test/Semantic/IOperation/IOperationTests_ITupleExpression.vb
+++ b/src/Compilers/VisualBasic/Test/Semantic/IOperation/IOperationTests_ITupleExpression.vb
--- a/src/Compilers/VisualBasic/Test/Semantic/IOperation/IOperationTests_IUnaryOperatorExpression.vb
+++ b/src/Compilers/VisualBasic/Test/Semantic/IOperation/IOperationTests_IUnaryOperatorExpression.vb
-' 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.

 Imports Microsoft.CodeAnalysis.VisualBasic.Syntax
 Imports Microsoft.CodeAnalysis.Test.Utilities
@@ -1347,10 +1347,10 @@ End Enum

            Dim expectedOperationTree = <![CDATA[
 IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: E) (Syntax: '+i')
-  Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+  Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
  Operand: IUnaryOperatorExpression (UnaryOperationKind.IntegerPlus) (OperationKind.UnaryOperatorExpression, Type: System.Int32) (Syntax: '+i')
      Operand: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32) (Syntax: 'i')
-          Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+          Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
          Operand: ILocalReferenceExpression: i (OperationKind.LocalReferenceExpression, Type: E) (Syntax: 'i')
 ]]>.Value

@@ -1373,13 +1373,14 @@ B
 End Enum
    ]]>.Value

-Dim expectedOperationTree = <![CDATA[
+            Dim expectedOperationTree = <![CDATA[
 IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: E) (Syntax: '-i')
-  Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+  Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
  Operand: IUnaryOperatorExpression (UnaryOperationKind.IntegerMinus) (OperationKind.UnaryOperatorExpression, Type: System.Int32) (Syntax: '-i')
      Operand: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32) (Syntax: 'i')
-          Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
-          Operand: ILocalReferenceExpression: i (OperationKind.LocalReferenceExpression, Type: E) (Syntax: 'i')]]>.Value
+          Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+          Operand: ILocalReferenceExpression: i (OperationKind.LocalReferenceExpression, Type: E) (Syntax: 'i')
+]]>.Value

            VerifyOperationTreeForTest(Of UnaryExpressionSyntax)(source, expectedOperationTree)
        End Sub
@@ -1424,15 +1425,16 @@ B
 End Enum
    ]]>.Value

-Dim expectedOperationTree = <![CDATA[
+            Dim expectedOperationTree = <![CDATA[
 IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: E) (Syntax: '+Method()')
-  Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+  Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
  Operand: IUnaryOperatorExpression (UnaryOperationKind.IntegerPlus) (OperationKind.UnaryOperatorExpression, Type: System.Int32) (Syntax: '+Method()')
      Operand: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32) (Syntax: 'Method()')
-          Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+          Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
          Operand: IInvocationExpression ( Function A.Method() As E) (OperationKind.InvocationExpression, Type: E) (Syntax: 'Method()')
              Instance Receiver: IInstanceReferenceExpression (InstanceReferenceKind.Implicit) (OperationKind.InstanceReferenceExpression, Type: A) (Syntax: 'Method')
-              Arguments(0)]]>.Value
+              Arguments(0)
+]]>.Value

            VerifyOperationTreeForTest(Of UnaryExpressionSyntax)(source, expectedOperationTree)
        End Sub
@@ -1453,15 +1455,16 @@ B
 End Enum
    ]]>.Value

-Dim expectedOperationTree = <![CDATA[
+            Dim expectedOperationTree = <![CDATA[
 IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: E) (Syntax: '-Method()')
-  Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+  Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
  Operand: IUnaryOperatorExpression (UnaryOperationKind.IntegerMinus) (OperationKind.UnaryOperatorExpression, Type: System.Int32) (Syntax: '-Method()')
      Operand: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32) (Syntax: 'Method()')
-          Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+          Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
          Operand: IInvocationExpression ( Function A.Method() As E) (OperationKind.InvocationExpression, Type: E) (Syntax: 'Method()')
              Instance Receiver: IInstanceReferenceExpression (InstanceReferenceKind.Implicit) (OperationKind.InstanceReferenceExpression, Type: A) (Syntax: 'Method')
-              Arguments(0)]]>.Value
+              Arguments(0)
+]]>.Value

            VerifyOperationTreeForTest(Of UnaryExpressionSyntax)(source, expectedOperationTree)
        End Sub
@@ -1851,7 +1854,7 @@ End Class]]>.Value
            Dim expectedOperationTree = <![CDATA[
 IUnaryOperatorExpression (UnaryOperationKind.OperatorMethodPlus) (OperatorMethod: Function BaseType.op_UnaryPlus(x As BaseType) As BaseType) (OperationKind.UnaryOperatorExpression, Type: BaseType) (Syntax: '+i')
  Operand: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: BaseType) (Syntax: 'i')
-      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
      Operand: ILocalReferenceExpression: i (OperationKind.LocalReferenceExpression, Type: DerivedType) (Syntax: 'i')
 ]]>.Value


--- a/src/Compilers/VisualBasic/Test/Semantic/IOperation/IOperationTests_IVariableDeclaration.vb
+++ b/src/Compilers/VisualBasic/Test/Semantic/IOperation/IOperationTests_IVariableDeclaration.vb
-' 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.

 Imports Microsoft.CodeAnalysis.VisualBasic.Syntax
 Imports Microsoft.CodeAnalysis.Semantics
@@ -1254,7 +1254,7 @@ IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclaratio
  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i1')
    Variables: Local_1: i1 As System.Object
    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object) (Syntax: '1')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
        Operand: ILiteralExpression (Text: 1) (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1) (Syntax: '1')
 ]]>.Value

@@ -1278,12 +1278,12 @@ IVariableDeclarationStatement (2 declarations) (OperationKind.VariableDeclaratio
  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i1')
    Variables: Local_1: i1 As System.Object
    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object) (Syntax: '1')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
        Operand: ILiteralExpression (Text: 1) (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1) (Syntax: '1')
  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i2')
    Variables: Local_1: i2 As System.Object
    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object) (Syntax: '2')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
        Operand: ILiteralExpression (Text: 2) (OperationKind.LiteralExpression, Type: System.Int32, Constant: 2) (Syntax: '2')
 ]]>.Value

@@ -1360,7 +1360,7 @@ IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclaratio
  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i1')
    Variables: Local_1: i1 As System.Object
    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object) (Syntax: 'Int1()')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
        Operand: IInvocationExpression (Function Program.Int1() As System.Int32) (OperationKind.InvocationExpression, Type: System.Int32) (Syntax: 'Int1()')
            Instance Receiver: null
            Arguments(0)
@@ -1390,14 +1390,14 @@ IVariableDeclarationStatement (2 declarations) (OperationKind.VariableDeclaratio
  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i1')
    Variables: Local_1: i1 As System.Object
    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object) (Syntax: 'Int1()')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
        Operand: IInvocationExpression (Function Program.Int1() As System.Int32) (OperationKind.InvocationExpression, Type: System.Int32) (Syntax: 'Int1()')
            Instance Receiver: null
            Arguments(0)
  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i2')
    Variables: Local_1: i2 As System.Object
    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object) (Syntax: 'Int1()')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
        Operand: IInvocationExpression (Function Program.Int1() As System.Int32) (OperationKind.InvocationExpression, Type: System.Int32) (Syntax: 'Int1()')
            Instance Receiver: null
            Arguments(0)
@@ -1495,7 +1495,7 @@ IVariableDeclarationStatement (1 declarations) (OperationKind.VariableDeclaratio
  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i1')
    Variables: Local_1: i1 As System.Object
    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object, IsInvalid) (Syntax: '')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+        Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
        Operand: IInvalidExpression (OperationKind.InvalidExpression, Type: ?, IsInvalid) (Syntax: '')
            Children(0)
 ]]>.Value
@@ -1528,13 +1528,13 @@ IVariableDeclarationStatement (2 declarations) (OperationKind.VariableDeclaratio
  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i1')
    Variables: Local_1: i1 As System.Object
    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object, IsInvalid) (Syntax: '')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+        Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
        Operand: IInvalidExpression (OperationKind.InvalidExpression, Type: ?, IsInvalid) (Syntax: '')
            Children(0)
  IVariableDeclaration (1 variables) (OperationKind.VariableDeclaration) (Syntax: 'i2')
    Variables: Local_1: i2 As System.Object
    Initializer: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object, IsInvalid) (Syntax: '')
-        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+        Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
        Operand: IInvalidExpression (OperationKind.InvalidExpression, Type: ?, IsInvalid) (Syntax: '')
            Children(0)
 ]]>.Value

--- a/src/Compilers/VisualBasic/Test/Semantic/IOperation/IOperationTests_IWhileUntilLoopStatement.vb
+++ b/src/Compilers/VisualBasic/Test/Semantic/IOperation/IOperationTests_IWhileUntilLoopStatement.vb
@@ -307,13 +307,13 @@ IWhileUntilLoopStatement (IsTopTest: True, IsWhile: True) (LoopKind.WhileUntil)
                  OutConversion: null
                IArgument (ArgumentKind.Explicit, Matching Parameter: arg0) (OperationKind.Argument) (Syntax: 'i')
                  IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object) (Syntax: 'i')
-                    Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+                    Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
                    Operand: ILocalReferenceExpression: i (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'i')
                  InConversion: null
                  OutConversion: null
                IArgument (ArgumentKind.Explicit, Matching Parameter: arg1) (OperationKind.Argument) (Syntax: 'value')
                  IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object) (Syntax: 'value')
-                    Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+                    Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
                    Operand: ILocalReferenceExpression: value (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'value')
                  InConversion: null
                  OutConversion: null
@@ -342,7 +342,7 @@ End Class
            Dim expectedOperationTree = <![CDATA[
 IWhileUntilLoopStatement (IsTopTest: True, IsWhile: True) (LoopKind.WhileUntil) (OperationKind.LoopStatement) (Syntax: 'While numbe ... End While')
  Condition: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Boolean) (Syntax: 'number')
-      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
      Operand: ILocalReferenceExpression: number (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'number')
  Body: IBlockStatement (0 statements) (OperationKind.BlockStatement) (Syntax: 'While numbe ... End While')
 ]]>.Value
@@ -463,7 +463,7 @@ End Class
            Dim expectedOperationTree = <![CDATA[
 IWhileUntilLoopStatement (IsTopTest: True, IsWhile: True) (LoopKind.WhileUntil) (OperationKind.LoopStatement, IsInvalid) (Syntax: 'While 'BIND ... End While')
  Condition: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Boolean, IsInvalid) (Syntax: '')
-      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
      Operand: IInvalidExpression (OperationKind.InvalidExpression, Type: ?, IsInvalid) (Syntax: '')
          Children(0)
  Body: IBlockStatement (2 statements, 1 locals) (OperationKind.BlockStatement, IsInvalid) (Syntax: 'While 'BIND ... End While')
@@ -880,7 +880,7 @@ IWhileUntilLoopStatement (IsTopTest: True, IsWhile: True) (LoopKind.WhileUntil)
                        ILocalReferenceExpression: x (OperationKind.LocalReferenceExpression, Type: System.SByte) (Syntax: 'x')
                  IBinaryOperatorExpression (BinaryOperationKind.IntegerAdd) (OperationKind.BinaryOperatorExpression, Type: System.Int32) (Syntax: 'x + 1')
                    Left: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32) (Syntax: 'x')
-                        Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+                        Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
                        Operand: ILocalReferenceExpression: x (OperationKind.LocalReferenceExpression, Type: System.SByte) (Syntax: 'x')
                    Right: ILiteralExpression (Text: 1) (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1) (Syntax: '1')
          Right: ILiteralExpression (Text: 0) (OperationKind.LiteralExpression, Type: System.Int32, Constant: 0) (Syntax: '0')
@@ -891,13 +891,13 @@ IWhileUntilLoopStatement (IsTopTest: True, IsWhile: True) (LoopKind.WhileUntil)
              Expression: ISimpleAssignmentExpression (OperationKind.SimpleAssignmentExpression, Type: System.SByte) (Syntax: 'y = CSByte(x / 2)')
                  Left: ILocalReferenceExpression: y (OperationKind.LocalReferenceExpression, Type: System.SByte) (Syntax: 'y')
                  Right: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.SByte) (Syntax: 'CSByte(x / 2)')
-                      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+                      Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
                      Operand: IBinaryOperatorExpression (BinaryOperationKind.FloatingDivide) (OperationKind.BinaryOperatorExpression, Type: System.Double) (Syntax: 'x / 2')
                          Left: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Double) (Syntax: 'x')
-                              Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+                              Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
                              Operand: ILocalReferenceExpression: x (OperationKind.LocalReferenceExpression, Type: System.SByte) (Syntax: 'x')
                          Right: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Double, Constant: 2) (Syntax: '2')
-                              Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+                              Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
                              Operand: ILiteralExpression (Text: 2) (OperationKind.LiteralExpression, Type: System.Int32, Constant: 2) (Syntax: '2')
        Catch clauses(0)
        Finally: IBlockStatement (1 statements) (OperationKind.BlockStatement) (Syntax: 'Finally ... Exception()')
@@ -1020,7 +1020,7 @@ IWhileUntilLoopStatement (IsTopTest: True, IsWhile: True) (LoopKind.WhileUntil)
                  OutConversion: null
                IArgument (ArgumentKind.Explicit, Matching Parameter: arg0) (OperationKind.Argument) (Syntax: 'x')
                  IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object) (Syntax: 'x')
-                    Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+                    Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
                    Operand: ILocalReferenceExpression: x (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'x')
                  InConversion: null
                  OutConversion: null

--- a/src/Compilers/VisualBasic/Test/Semantic/IOperation/IOperationTests_InvalidExpression.vb
+++ b/src/Compilers/VisualBasic/Test/Semantic/IOperation/IOperationTests_InvalidExpression.vb
@@ -58,7 +58,7 @@ IInvocationExpression ( Sub Program.F(x As System.Int32)) (OperationKind.Invocat
  Arguments(1):
      IArgument (ArgumentKind.Explicit, Matching Parameter: x) (OperationKind.Argument) (Syntax: 'String.Empty')
        IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32) (Syntax: 'String.Empty')
-          Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+          Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
          Operand: IFieldReferenceExpression: System.String.Empty As System.String (Static) (OperationKind.FieldReferenceExpression, Type: System.String) (Syntax: 'String.Empty')
              Instance Receiver: null
        InConversion: null
@@ -179,11 +179,12 @@ Class Program
    End Sub
 End Class]]>.Value

-Dim expectedOperationTree = <![CDATA[
+            Dim expectedOperationTree = <![CDATA[
 IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: Program, IsInvalid) (Syntax: 'DirectCast( ... 1, Program)')
-  Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+  Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
  Operand: IFieldReferenceExpression: Program.i1 As System.Int32 (OperationKind.FieldReferenceExpression, Type: System.Int32, IsInvalid) (Syntax: 'x.i1')
-      Instance Receiver: ILocalReferenceExpression: x (OperationKind.LocalReferenceExpression, Type: Program, IsInvalid) (Syntax: 'x')]]>.Value
+      Instance Receiver: ILocalReferenceExpression: x (OperationKind.LocalReferenceExpression, Type: Program, IsInvalid) (Syntax: 'x')
+]]>.Value

            Dim expectedDiagnostics = <![CDATA[
 BC30311: Value of type 'Integer' cannot be converted to 'Program'.

--- a/src/Compilers/VisualBasic/Test/Semantic/IOperation/IOperationTests_InvalidStatement.vb
+++ b/src/Compilers/VisualBasic/Test/Semantic/IOperation/IOperationTests_InvalidStatement.vb
-' 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.

 Imports Microsoft.CodeAnalysis.Semantics
 Imports Microsoft.CodeAnalysis.Test.Utilities
@@ -129,7 +129,7 @@ IIfStatement (OperationKind.IfStatement, IsInvalid) (Syntax: 'If x = Noth ... En
      Operand: IBinaryOperatorExpression (BinaryOperationKind.Invalid) (OperationKind.BinaryOperatorExpression, Type: ?, IsInvalid) (Syntax: 'x = Nothing')
          Left: ILocalReferenceExpression: x (OperationKind.LocalReferenceExpression, Type: Program, IsInvalid) (Syntax: 'x')
          Right: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: Program, Constant: null, IsInvalid) (Syntax: 'Nothing')
-              Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+              Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
              Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: null, Constant: null, IsInvalid) (Syntax: 'Nothing')
  IfTrue: IBlockStatement (0 statements) (OperationKind.BlockStatement, IsInvalid) (Syntax: 'If x = Noth ... End If')
  IfFalse: null
@@ -161,7 +161,7 @@ End Class]]>.Value
            Dim expectedOperationTree = <![CDATA[
 IIfStatement (OperationKind.IfStatement, IsInvalid) (Syntax: 'If Then'BIN ... Else')
  Condition: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Boolean, IsInvalid) (Syntax: '')
-      Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+      Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
      Operand: IInvalidExpression (OperationKind.InvalidExpression, Type: ?, IsInvalid) (Syntax: '')
          Children(0)
  IfTrue: IBlockStatement (0 statements) (OperationKind.BlockStatement, IsInvalid) (Syntax: 'If Then'BIN ... Else')
@@ -221,7 +221,7 @@ IForLoopStatement (LoopKind.For) (OperationKind.LoopStatement, IsInvalid) (Synta
        Expression: ISimpleAssignmentExpression (OperationKind.SimpleAssignmentExpression, Type: System.Int32, IsInvalid) (Syntax: '')
            Left: ISyntheticLocalReferenceExpression (SynthesizedLocalKind.ForLoopLimitValue) (OperationKind.SyntheticLocalReferenceExpression, Type: System.Int32, IsInvalid) (Syntax: '')
            Right: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32, IsInvalid) (Syntax: '')
-                Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+                Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
                Operand: IInvalidExpression (OperationKind.InvalidExpression, Type: ?, IsInvalid) (Syntax: '')
                    Children(0)
  AtLoopBottom:
@@ -229,7 +229,7 @@ IForLoopStatement (LoopKind.For) (OperationKind.LoopStatement, IsInvalid) (Synta
        Expression: ICompoundAssignmentExpression (BinaryOperationKind.IntegerAdd) (OperationKind.CompoundAssignmentExpression, Type: System.Int32, IsInvalid) (Syntax: 'For i As In ... Next i')
            Left: ILocalReferenceExpression: i (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'i As Integer')
            Right: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Int32, Constant: 1, IsInvalid) (Syntax: 'For i As In ... Next i')
-                Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+                Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
                Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1, IsInvalid) (Syntax: 'For i As In ... Next i')
  Body: IBlockStatement (0 statements) (OperationKind.BlockStatement, IsInvalid) (Syntax: 'For i As In ... Next i')
 ]]>.Value
@@ -275,21 +275,21 @@ IForLoopStatement (LoopKind.For) (OperationKind.LoopStatement, IsInvalid) (Synta
        Expression: ISimpleAssignmentExpression (OperationKind.SimpleAssignmentExpression, Type: System.Object, IsInvalid) (Syntax: '')
            Left: ILocalReferenceExpression:  (OperationKind.LocalReferenceExpression, Type: System.Object, IsInvalid) (Syntax: '')
            Right: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object, IsInvalid) (Syntax: '')
-                Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+                Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
                Operand: IInvalidExpression (OperationKind.InvalidExpression, Type: ?, IsInvalid) (Syntax: '')
                    Children(0)
      IExpressionStatement (OperationKind.ExpressionStatement, IsInvalid) (Syntax: '')
        Expression: ISimpleAssignmentExpression (OperationKind.SimpleAssignmentExpression, Type: System.Object, IsInvalid) (Syntax: '')
            Left: ISyntheticLocalReferenceExpression (SynthesizedLocalKind.ForLoopLimitValue) (OperationKind.SyntheticLocalReferenceExpression, Type: System.Object, IsInvalid) (Syntax: '')
            Right: IConversionExpression (Implicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object, IsInvalid) (Syntax: '')
-                Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+                Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
                Operand: IInvalidExpression (OperationKind.InvalidExpression, Type: ?, IsInvalid) (Syntax: '')
                    Children(0)
      IExpressionStatement (OperationKind.ExpressionStatement, IsInvalid) (Syntax: 'For Step (M ... Next')
        Expression: ISimpleAssignmentExpression (OperationKind.SimpleAssignmentExpression, Type: System.Object, IsInvalid) (Syntax: 'For Step (M ... Next')
            Left: ISyntheticLocalReferenceExpression (SynthesizedLocalKind.ForLoopStepValue) (OperationKind.SyntheticLocalReferenceExpression, Type: System.Object, IsInvalid) (Syntax: 'For Step (M ... Next')
            Right: IConversionExpression (Explicit, TryCast: False, Unchecked) (OperationKind.ConversionExpression, Type: System.Object, IsInvalid) (Syntax: 'For Step (M ... Next')
-                Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
+                Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
                Operand: ILiteralExpression (OperationKind.LiteralExpression, Type: System.Int32, Constant: 1, IsInvalid) (Syntax: 'For Step (M ... Next')
  AtLoopBottom:
      IExpressionStatement (OperationKind.ExpressionStatement, IsInvalid) (Syntax: 'For Step (M ... Next')