[Release/7.0] Updating inbox source generators to Roslyn 4.4 and removing polyfill approach (#74822)

* Updating inbox source generators to Roslyn 4.4 and removing polyfill approach

* Updating the sdk to match Arcade's version

18 files changed, 66 insertions, 46 deletions

diff --git a/.editorconfig b/.editorconfig
index 15658bab8d0..9d0f526c0cc 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -94,7 +94,8 @@ dotnet_style_object_initializer = true:suggestion
 dotnet_style_collection_initializer = true:suggestion
 dotnet_style_explicit_tuple_names = true:suggestion
 dotnet_style_coalesce_expression = true:suggestion
-dotnet_style_null_propagation = true:suggestion
+dotnet_style_null_propagation = false:suggestion   # Turning off given new warnings that came with the new analyzers and we don't want to take the risk of changing those now
+dotnet_style_prefer_compound_assignment = false:suggestion
 dotnet_style_prefer_is_null_check_over_reference_equality_method = true:suggestion
 dotnet_style_prefer_inferred_tuple_names = true:suggestion
 dotnet_style_prefer_inferred_anonymous_type_member_names = true:suggestion
diff --git a/eng/Versions.props b/eng/Versions.props
index 205956e1954..314680a9cac 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -39,16 +39,16 @@
       This version is a moving target until we ship.
       It should never go ahead of the Roslyn version included in the SDK version in dotnet/arcade's global.json to avoid causing breaks in product construction.
     -->
-    <MicrosoftCodeAnalysisVersion_4_X>4.3.0-2.final</MicrosoftCodeAnalysisVersion_4_X>
+    <MicrosoftCodeAnalysisVersion_4_X>4.4.0-2.22423.18</MicrosoftCodeAnalysisVersion_4_X>
   </PropertyGroup>
   <PropertyGroup>
     <!-- Code analysis dependencies -->
     <MicrosoftCodeAnalysisAnalyzersVersion>3.3.3</MicrosoftCodeAnalysisAnalyzersVersion>
-    <MicrosoftCodeAnalysisCSharpCodeStyleVersion>4.3.0-2.final</MicrosoftCodeAnalysisCSharpCodeStyleVersion>
-    <MicrosoftCodeAnalysisCSharpWorkspacesVersion>4.3.0-2.final</MicrosoftCodeAnalysisCSharpWorkspacesVersion>
-    <MicrosoftCodeAnalysisCSharpVersion>4.3.0-2.final</MicrosoftCodeAnalysisCSharpVersion>
+    <MicrosoftCodeAnalysisCSharpCodeStyleVersion>4.4.0-2.22423.18</MicrosoftCodeAnalysisCSharpCodeStyleVersion>
+    <MicrosoftCodeAnalysisCSharpWorkspacesVersion>4.4.0-2.22423.18</MicrosoftCodeAnalysisCSharpWorkspacesVersion>
+    <MicrosoftCodeAnalysisCSharpVersion>4.4.0-2.22423.18</MicrosoftCodeAnalysisCSharpVersion>
     <MicrosoftCodeAnalysisNetAnalyzersVersion>7.0.0-preview1.22452.2</MicrosoftCodeAnalysisNetAnalyzersVersion>
-    <MicrosoftCodeAnalysisVersion>4.3.0-2.final</MicrosoftCodeAnalysisVersion>
+    <MicrosoftCodeAnalysisVersion>4.4.0-2.22423.18</MicrosoftCodeAnalysisVersion>
     <!--
       TODO: Remove pinned version once arcade supplies a compiler that enables the repo to compile.
     -->
diff --git a/global.json b/global.json
index 555895afe03..6aef27016bf 100644
--- a/global.json
+++ b/global.json
@@ -1,11 +1,11 @@
 {
   "sdk": {
-    "version": "7.0.100-preview.7.22377.5",
+    "version": "7.0.100-rc.1.22425.9",
     "allowPrerelease": true,
     "rollForward": "major"
   },
   "tools": {
-    "dotnet": "7.0.100-preview.7.22377.5"
+    "dotnet": "7.0.100-rc.1.22425.9"
   },
   "msbuild-sdks": {
     "Microsoft.DotNet.Arcade.Sdk": "7.0.0-beta.22418.4",
diff --git a/src/libraries/Microsoft.Extensions.Logging.Abstractions/gen/LoggerMessageGenerator.Roslyn4.0.cs b/src/libraries/Microsoft.Extensions.Logging.Abstractions/gen/LoggerMessageGenerator.Roslyn4.0.cs
index ab342384270..7dd80ba2926 100644
--- a/src/libraries/Microsoft.Extensions.Logging.Abstractions/gen/LoggerMessageGenerator.Roslyn4.0.cs
+++ b/src/libraries/Microsoft.Extensions.Logging.Abstractions/gen/LoggerMessageGenerator.Roslyn4.0.cs
@@ -7,7 +7,9 @@ using System.Linq;
 using System.Text;
 using Microsoft.CodeAnalysis;
 using Microsoft.CodeAnalysis.CSharp.Syntax;
+#if !ROSLYN4_4_OR_GREATER
 using Microsoft.CodeAnalysis.DotnetRuntime.Extensions;
+#endif
 using Microsoft.CodeAnalysis.Text;
 
 [assembly: System.Resources.NeutralResourcesLanguage("en-us")]
@@ -21,7 +23,9 @@ namespace Microsoft.Extensions.Logging.Generators
         {
             IncrementalValuesProvider<ClassDeclarationSyntax> classDeclarations = context.SyntaxProvider
                 .ForAttributeWithMetadataName(
+#if !ROSLYN4_4_OR_GREATER
                     context,
+#endif
                     Parser.LoggerMessageAttribute,
                     (node, _) => node is MethodDeclarationSyntax,
                     (context, _) => context.TargetNode.Parent as ClassDeclarationSyntax)
diff --git a/src/libraries/Microsoft.Extensions.Logging.Abstractions/gen/Microsoft.Extensions.Logging.Generators.Roslyn4.4.csproj b/src/libraries/Microsoft.Extensions.Logging.Abstractions/gen/Microsoft.Extensions.Logging.Generators.Roslyn4.4.csproj
new file mode 100644
index 00000000000..84fa254dec4
--- /dev/null
+++ b/src/libraries/Microsoft.Extensions.Logging.Abstractions/gen/Microsoft.Extensions.Logging.Generators.Roslyn4.4.csproj
@@ -0,0 +1,20 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <AnalyzerRoslynVersion>4.4</AnalyzerRoslynVersion>
+    <RoslynApiVersion>$(MicrosoftCodeAnalysisVersion_4_X)</RoslynApiVersion>
+    <DefineConstants>$(DefineConstants);ROSLYN4_0_OR_GREATER;ROSLYN4_4_OR_GREATER</DefineConstants>
+  </PropertyGroup>
+
+  <Import Project="Microsoft.Extensions.Logging.Generators.targets" />
+
+  <ItemGroup>
+    <Compile Include="$(CoreLibSharedDir)System\Collections\Generic\ValueListBuilder.cs" Link="Production\ValueListBuilder.cs" />
+    <Compile Include="$(CoreLibSharedDir)System\Collections\Generic\ValueListBuilder.Pop.cs" Link="Production\ValueListBuilder.Pop.cs" />
+  </ItemGroup>
+  
+  <ItemGroup>
+    <Compile Remove="LoggerMessageGenerator.Roslyn3.11.cs" />
+  </ItemGroup>
+
+</Project>
diff --git a/src/libraries/Microsoft.Extensions.Logging.Abstractions/src/Microsoft.Extensions.Logging.Abstractions.csproj b/src/libraries/Microsoft.Extensions.Logging.Abstractions/src/Microsoft.Extensions.Logging.Abstractions.csproj
index 09e2e23824b..e95fbc0ac99 100644
--- a/src/libraries/Microsoft.Extensions.Logging.Abstractions/src/Microsoft.Extensions.Logging.Abstractions.csproj
+++ b/src/libraries/Microsoft.Extensions.Logging.Abstractions/src/Microsoft.Extensions.Logging.Abstractions.csproj
@@ -45,6 +45,9 @@ Microsoft.Extensions.Logging.Abstractions.NullLogger</PackageDescription>
     <AnalyzerReference Include="..\gen\Microsoft.Extensions.Logging.Generators.Roslyn4.0.csproj"
                        Pack="true"
                        ReferenceAnalyzer="false" />
+    <AnalyzerReference Include="..\gen\Microsoft.Extensions.Logging.Generators.Roslyn4.4.csproj"
+                       Pack="true"
+                       ReferenceAnalyzer="false" />
   </ItemGroup>
 
 </Project>
diff --git a/src/libraries/Microsoft.Internal.Runtime.AspNetCore.Transport/src/Microsoft.Internal.Runtime.AspNetCore.Transport.proj b/src/libraries/Microsoft.Internal.Runtime.AspNetCore.Transport/src/Microsoft.Internal.Runtime.AspNetCore.Transport.proj
index cd8628c81af..45fd36cc2d2 100644
--- a/src/libraries/Microsoft.Internal.Runtime.AspNetCore.Transport/src/Microsoft.Internal.Runtime.AspNetCore.Transport.proj
+++ b/src/libraries/Microsoft.Internal.Runtime.AspNetCore.Transport/src/Microsoft.Internal.Runtime.AspNetCore.Transport.proj
@@ -20,8 +20,8 @@
                       PrivateAssets="all"
                       Private="true"
                       IncludeReferenceAssemblyInPackage="true" />
-    <!-- Only include the 4.0 version in the ref pack, since targeting net6.0 requires Roslyn 4.0 -->
-    <AnalyzerReference Include="$(LibrariesProjectRoot)Microsoft.Extensions.Logging.Abstractions\gen\Microsoft.Extensions.Logging.Generators.Roslyn4.0.csproj"
+    <!-- Only include the 4.4 version in the ref pack, since targeting net7.0 requires Roslyn 4.4 -->
+    <AnalyzerReference Include="$(LibrariesProjectRoot)Microsoft.Extensions.Logging.Abstractions\gen\Microsoft.Extensions.Logging.Generators.Roslyn4.4.csproj"
                        Pack="true"
                        ReferenceAnalyzer="false" />
   </ItemGroup>
diff --git a/src/libraries/NetCoreAppLibrary.props b/src/libraries/NetCoreAppLibrary.props
index 9d008faa152..d9349970d57 100644
--- a/src/libraries/NetCoreAppLibrary.props
+++ b/src/libraries/NetCoreAppLibrary.props
@@ -185,7 +185,7 @@
     <NetCoreAppLibraryGenerator>
       LibraryImportGenerator;
       JSImportGenerator;
-      System.Text.Json.SourceGeneration.Roslyn4.0;
+      System.Text.Json.SourceGeneration.Roslyn4.4;
       System.Text.RegularExpressions.Generator;
     </NetCoreAppLibraryGenerator>
     <AspNetCoreAppLibrary>
diff --git a/src/libraries/System.Private.CoreLib/gen/EventSourceGenerator.Parser.cs b/src/libraries/System.Private.CoreLib/gen/EventSourceGenerator.Parser.cs
index 43a498b589a..fa2e1a2fc85 100644
--- a/src/libraries/System.Private.CoreLib/gen/EventSourceGenerator.Parser.cs
+++ b/src/libraries/System.Private.CoreLib/gen/EventSourceGenerator.Parser.cs
@@ -9,7 +9,6 @@ using System.Text;
 using System.Threading;
 using Microsoft.CodeAnalysis;
 using Microsoft.CodeAnalysis.CSharp.Syntax;
-using Microsoft.CodeAnalysis.DotnetRuntime.Extensions;
 
 namespace Generators
 {
diff --git a/src/libraries/System.Private.CoreLib/gen/EventSourceGenerator.cs b/src/libraries/System.Private.CoreLib/gen/EventSourceGenerator.cs
index e57f11d6f4e..90ea79020dd 100644
--- a/src/libraries/System.Private.CoreLib/gen/EventSourceGenerator.cs
+++ b/src/libraries/System.Private.CoreLib/gen/EventSourceGenerator.cs
@@ -7,7 +7,6 @@ using System.Collections.Immutable;
 using System.Threading;
 using Microsoft.CodeAnalysis;
 using Microsoft.CodeAnalysis.CSharp.Syntax;
-using Microsoft.CodeAnalysis.DotnetRuntime.Extensions;
 
 namespace Generators
 {
@@ -40,7 +39,6 @@ namespace Generators
 
             IncrementalValuesProvider<EventSourceClass> eventSourceClasses =
                 context.SyntaxProvider.ForAttributeWithMetadataName(
-                    context,
                     EventSourceAutoGenerateAttribute,
                     (node, _) => node is ClassDeclarationSyntax,
                     GetSemanticTargetForGeneration)
diff --git a/src/libraries/System.Private.CoreLib/gen/System.Private.CoreLib.Generators.csproj b/src/libraries/System.Private.CoreLib/gen/System.Private.CoreLib.Generators.csproj
index 90d6ae99bb2..9b8934e682a 100644
--- a/src/libraries/System.Private.CoreLib/gen/System.Private.CoreLib.Generators.csproj
+++ b/src/libraries/System.Private.CoreLib/gen/System.Private.CoreLib.Generators.csproj
@@ -13,16 +13,6 @@
   </ItemGroup>
 
   <ItemGroup>
-    <Compile Include="$(CommonPath)Roslyn\GetBestTypeByMetadataName.cs" Link="Common\Roslyn\GetBestTypeByMetadataName.cs" />
-    <Compile Include="$(CommonPath)Roslyn\Hash.cs" Link="Common\Roslyn\Hash.cs" />
-    <Compile Include="$(CommonPath)Roslyn\ISyntaxHelper.cs" Link="Common\Roslyn\ISyntaxHelper.cs" />
-    <Compile Include="$(CommonPath)Roslyn\CSharpSyntaxHelper.cs" Link="Common\Roslyn\CSharpSyntaxHelper.cs" />
-    <Compile Include="$(CommonPath)Roslyn\GlobalAliases.cs" Link="Common\Roslyn\GlobalAliases.cs" />
-    <Compile Include="$(CommonPath)Roslyn\SyntaxNodeGrouping.cs" Link="Common\Roslyn\SyntaxNodeGrouping.cs" />
-    <Compile Include="$(CommonPath)Roslyn\SyntaxValueProvider.ImmutableArrayValueComparer.cs" Link="Common\Roslyn\SyntaxValueProvider.ImmutableArrayValueComparer.cs" />
-    <Compile Include="$(CommonPath)Roslyn\SyntaxValueProvider_ForAttributeWithMetadataName.cs" Link="Common\Roslyn\SyntaxValueProvider_ForAttributeWithMetadataName.cs" />
-    <Compile Include="$(CommonPath)Roslyn\SyntaxValueProvider_ForAttributeWithSimpleName.cs" Link="Common\Roslyn\SyntaxValueProvider_ForAttributeWithSimpleName.cs" />
-
     <Compile Include="$(CoreLibSharedDir)System\Collections\Generic\ValueListBuilder.cs" Link="Production\ValueListBuilder.cs" />
     <Compile Include="$(CoreLibSharedDir)System\Collections\Generic\ValueListBuilder.Pop.cs" Link="Production\ValueListBuilder.Pop.cs" />
   </ItemGroup>
diff --git a/src/libraries/System.Runtime.InteropServices/gen/LibraryImportGenerator/LibraryImportGenerator.cs b/src/libraries/System.Runtime.InteropServices/gen/LibraryImportGenerator/LibraryImportGenerator.cs
index 1da4dbd49af..c2b8cb92f8c 100644
--- a/src/libraries/System.Runtime.InteropServices/gen/LibraryImportGenerator/LibraryImportGenerator.cs
+++ b/src/libraries/System.Runtime.InteropServices/gen/LibraryImportGenerator/LibraryImportGenerator.cs
@@ -12,7 +12,6 @@ using System.Threading;
 using Microsoft.CodeAnalysis;
 using Microsoft.CodeAnalysis.CSharp;
 using Microsoft.CodeAnalysis.CSharp.Syntax;
-using Microsoft.CodeAnalysis.DotnetRuntime.Extensions;
 using static Microsoft.CodeAnalysis.CSharp.SyntaxFactory;
 
 [assembly: System.Resources.NeutralResourcesLanguage("en-US")]
@@ -64,7 +63,6 @@ namespace Microsoft.Interop
             // Collect all methods adorned with LibraryImportAttribute
             var attributedMethods = context.SyntaxProvider
                 .ForAttributeWithMetadataName(
-                    context,
                     TypeNames.LibraryImportAttribute,
                     static (node, ct) => node is MethodDeclarationSyntax,
                     static (context, ct) => context.TargetSymbol is IMethodSymbol methodSymbol
diff --git a/src/libraries/System.Runtime.InteropServices/gen/LibraryImportGenerator/LibraryImportGenerator.csproj b/src/libraries/System.Runtime.InteropServices/gen/LibraryImportGenerator/LibraryImportGenerator.csproj
index ab8172b6979..f56241ed59f 100644
--- a/src/libraries/System.Runtime.InteropServices/gen/LibraryImportGenerator/LibraryImportGenerator.csproj
+++ b/src/libraries/System.Runtime.InteropServices/gen/LibraryImportGenerator/LibraryImportGenerator.csproj
@@ -37,15 +37,7 @@
 
   <ItemGroup>
     <Compile Include="$(CommonPath)Roslyn\GetBestTypeByMetadataName.cs" Link="Common\Roslyn\GetBestTypeByMetadataName.cs" />
-    <Compile Include="$(CommonPath)Roslyn\Hash.cs" Link="Common\Roslyn\Hash.cs" />
-    <Compile Include="$(CommonPath)Roslyn\ISyntaxHelper.cs" Link="Common\Roslyn\ISyntaxHelper.cs" />
-    <Compile Include="$(CommonPath)Roslyn\CSharpSyntaxHelper.cs" Link="Common\Roslyn\CSharpSyntaxHelper.cs" />
-    <Compile Include="$(CommonPath)Roslyn\GlobalAliases.cs" Link="Common\Roslyn\GlobalAliases.cs" />
-    <Compile Include="$(CommonPath)Roslyn\SyntaxNodeGrouping.cs" Link="Common\Roslyn\SyntaxNodeGrouping.cs" />
-    <Compile Include="$(CommonPath)Roslyn\SyntaxValueProvider.ImmutableArrayValueComparer.cs" Link="Common\Roslyn\SyntaxValueProvider.ImmutableArrayValueComparer.cs" />
-    <Compile Include="$(CommonPath)Roslyn\SyntaxValueProvider_ForAttributeWithMetadataName.cs" Link="Common\Roslyn\SyntaxValueProvider_ForAttributeWithMetadataName.cs" />
-    <Compile Include="$(CommonPath)Roslyn\SyntaxValueProvider_ForAttributeWithSimpleName.cs" Link="Common\Roslyn\SyntaxValueProvider_ForAttributeWithSimpleName.cs" />
-    
+
     <Compile Include="$(CoreLibSharedDir)System\Collections\Generic\ValueListBuilder.cs" Link="Production\ValueListBuilder.cs" />
     <Compile Include="$(CoreLibSharedDir)System\Collections\Generic\ValueListBuilder.Pop.cs" Link="Production\ValueListBuilder.Pop.cs" />
   </ItemGroup>
diff --git a/src/libraries/System.Text.Json/gen/JsonSourceGenerator.Roslyn4.0.cs b/src/libraries/System.Text.Json/gen/JsonSourceGenerator.Roslyn4.0.cs
index 8f4cd15e2df..1a7df0e821e 100644
--- a/src/libraries/System.Text.Json/gen/JsonSourceGenerator.Roslyn4.0.cs
+++ b/src/libraries/System.Text.Json/gen/JsonSourceGenerator.Roslyn4.0.cs
@@ -13,7 +13,9 @@ using Microsoft.CodeAnalysis;
 using Microsoft.CodeAnalysis.CSharp;
 using Microsoft.CodeAnalysis.CSharp.Syntax;
 using Microsoft.CodeAnalysis.Text;
+#if !ROSLYN4_4_OR_GREATER
 using Microsoft.CodeAnalysis.DotnetRuntime.Extensions;
+#endif
 
 namespace System.Text.Json.SourceGeneration
 {
@@ -27,7 +29,9 @@ namespace System.Text.Json.SourceGeneration
         {
             IncrementalValuesProvider<ClassDeclarationSyntax> classDeclarations = context.SyntaxProvider
                 .ForAttributeWithMetadataName(
+#if !ROSLYN4_4_OR_GREATER
                     context,
+#endif
                     Parser.JsonSerializableAttributeFullName,
                     (node, _) => node is ClassDeclarationSyntax,
                     (context, _) => (ClassDeclarationSyntax)context.TargetNode);
diff --git a/src/libraries/System.Text.Json/gen/System.Text.Json.SourceGeneration.Roslyn4.4.csproj b/src/libraries/System.Text.Json/gen/System.Text.Json.SourceGeneration.Roslyn4.4.csproj
new file mode 100644
index 00000000000..c88568a7b52
--- /dev/null
+++ b/src/libraries/System.Text.Json/gen/System.Text.Json.SourceGeneration.Roslyn4.4.csproj
@@ -0,0 +1,20 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <AnalyzerRoslynVersion>4.4</AnalyzerRoslynVersion>
+    <RoslynApiVersion>$(MicrosoftCodeAnalysisVersion_4_X)</RoslynApiVersion>
+    <DefineConstants>$(DefineConstants);ROSLYN4_0_OR_GREATER;ROSLYN4_4_OR_GREATER</DefineConstants>
+  </PropertyGroup>
+
+  <Import Project="System.Text.Json.SourceGeneration.targets" />
+
+  <ItemGroup>
+    <Compile Include="JsonSourceGenerator.Roslyn4.0.cs" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Compile Include="$(CoreLibSharedDir)System\Collections\Generic\ValueListBuilder.cs" Link="Production\ValueListBuilder.cs" />
+    <Compile Include="$(CoreLibSharedDir)System\Collections\Generic\ValueListBuilder.Pop.cs" Link="Production\ValueListBuilder.Pop.cs" />
+  </ItemGroup>
+
+</Project>
diff --git a/src/libraries/System.Text.Json/src/System.Text.Json.csproj b/src/libraries/System.Text.Json/src/System.Text.Json.csproj
index e17ce01c770..092d8ed2d93 100644
--- a/src/libraries/System.Text.Json/src/System.Text.Json.csproj
+++ b/src/libraries/System.Text.Json/src/System.Text.Json.csproj
@@ -384,5 +384,6 @@ The System.Text.Json library is built-in as part of the shared framework in .NET
   <ItemGroup>
     <AnalyzerReference Include="..\gen\System.Text.Json.SourceGeneration.Roslyn3.11.csproj" Pack="true" ReferenceAnalyzer="false" Condition="'$(DotNetBuildFromSource)' != 'true'" />
     <AnalyzerReference Include="..\gen\System.Text.Json.SourceGeneration.Roslyn4.0.csproj" Pack="true" ReferenceAnalyzer="false" />
+    <AnalyzerReference Include="..\gen\System.Text.Json.SourceGeneration.Roslyn4.4.csproj" Pack="true" ReferenceAnalyzer="false" />
   </ItemGroup>
 </Project>
diff --git a/src/libraries/System.Text.RegularExpressions/gen/RegexGenerator.cs b/src/libraries/System.Text.RegularExpressions/gen/RegexGenerator.cs
index ed237b82379..effe0127442 100644
--- a/src/libraries/System.Text.RegularExpressions/gen/RegexGenerator.cs
+++ b/src/libraries/System.Text.RegularExpressions/gen/RegexGenerator.cs
@@ -11,7 +11,6 @@ using System.Linq;
 using Microsoft.CodeAnalysis;
 using Microsoft.CodeAnalysis.CSharp;
 using Microsoft.CodeAnalysis.CSharp.Syntax;
-using Microsoft.CodeAnalysis.DotnetRuntime.Extensions;
 
 [assembly: System.Resources.NeutralResourcesLanguage("en-us")]
 
@@ -48,7 +47,6 @@ namespace System.Text.RegularExpressions.Generator
 
                 // Find all MethodDeclarationSyntax nodes attributed with GeneratedRegex and gather the required information.
                 .ForAttributeWithMetadataName(
-                    context,
                     GeneratedRegexAttributeName,
                     (node, _) => node is MethodDeclarationSyntax,
                     GetSemanticTargetForGeneration)
diff --git a/src/libraries/System.Text.RegularExpressions/gen/System.Text.RegularExpressions.Generator.csproj b/src/libraries/System.Text.RegularExpressions/gen/System.Text.RegularExpressions.Generator.csproj
index bf14a855c90..6eea6ea72fc 100644
--- a/src/libraries/System.Text.RegularExpressions/gen/System.Text.RegularExpressions.Generator.csproj
+++ b/src/libraries/System.Text.RegularExpressions/gen/System.Text.RegularExpressions.Generator.csproj
@@ -14,20 +14,12 @@
 
   <ItemGroup>
     <!-- This generator ships as part of the .NET ref pack. Since VS ingests new Roslyn versions at a different cadence than the .NET SDK, we are pinning this generator to build against Roslyn 4.0 to ensure that we don't break users who are using .NET 7 previews in VS. -->
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="$(MicrosoftCodeAnalysisVersion_4_0)" PrivateAssets="all" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="$(MicrosoftCodeAnalysisVersion_4_X)" PrivateAssets="all" />
   </ItemGroup>
 
   <ItemGroup>
     <!-- Common generator support -->
     <Compile Include="$(CommonPath)Roslyn\GetBestTypeByMetadataName.cs" Link="Common\Roslyn\GetBestTypeByMetadataName.cs" />
-    <Compile Include="$(CommonPath)Roslyn\Hash.cs" Link="Common\Roslyn\Hash.cs" />
-    <Compile Include="$(CommonPath)Roslyn\ISyntaxHelper.cs" Link="Common\Roslyn\ISyntaxHelper.cs" />
-    <Compile Include="$(CommonPath)Roslyn\CSharpSyntaxHelper.cs" Link="Common\Roslyn\CSharpSyntaxHelper.cs" />
-    <Compile Include="$(CommonPath)Roslyn\GlobalAliases.cs" Link="Common\Roslyn\GlobalAliases.cs" />
-    <Compile Include="$(CommonPath)Roslyn\SyntaxNodeGrouping.cs" Link="Common\Roslyn\SyntaxNodeGrouping.cs" />
-    <Compile Include="$(CommonPath)Roslyn\SyntaxValueProvider.ImmutableArrayValueComparer.cs" Link="Common\Roslyn\SyntaxValueProvider.ImmutableArrayValueComparer.cs" />
-    <Compile Include="$(CommonPath)Roslyn\SyntaxValueProvider_ForAttributeWithMetadataName.cs" Link="Common\Roslyn\SyntaxValueProvider_ForAttributeWithMetadataName.cs" />
-    <Compile Include="$(CommonPath)Roslyn\SyntaxValueProvider_ForAttributeWithSimpleName.cs" Link="Common\Roslyn\SyntaxValueProvider_ForAttributeWithSimpleName.cs" />
     <Compile Include="$(CoreLibSharedDir)System\Runtime\CompilerServices\IsExternalInit.cs" Link="Common\System\Runtime\CompilerServices\IsExternalInit.cs" />
 
     <!-- Code included from System.Text.RegularExpressions -->