Crossgen fails when compiling a trimmed Mac Catalyst project

[rolfbjarne]

Description

Crossgen fails to compile a trimmed Mac Catalyst project with:

error Error: Failed to load type 'System.Runtime.Intrinsics.Arm.Crc32' from assembly 'System.Private.CoreLib'

Reproduction Steps

Use .NET 11 preview 1, install the mac catalyst workload, create a mac catalyst project, compile.

This script does it:

#!/bin/bash -eu

curl -LO https://ci.dot.net/public/Sdk/11.0.100-preview.1.26081.107/dotnet-sdk-11.0.100-preview.1.26081.107-osx-arm64.tar.gz
mkdir dotnet
tar -xzf *.tar.gz -C dotnet

cat >NuGet.config <<EOF
<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <packageSources>
    <clear />
    <add key="macios10" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-macios-b364fe57/nuget/v3/index.json" />
    <add key="dotnet11" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet11/nuget/v3/index.json" />
    <add key="macios" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-macios-64064500/nuget/v3/index.json" />
    <add key="official" value="https://api.nuget.org/v3/index.json" />
  </packageSources>
  <disabledPackageSources>
    <clear />
  </disabledPackageSources>
</configuration>
EOF

./dotnet/dotnet workload config --update-mode manifests
./dotnet/dotnet workload install maccatalyst
mkdir catalysttest
cd catalysttest
../dotnet/dotnet new maccatalyst
../dotnet/dotnet build -p:UseMonoRuntime=false -p:MtouchLink=SdkOnly

Expected behavior

Successful build.

Actual behavior

$ dotnet build -p:UseMonoRuntime=false -p:MtouchLink=SdkOnly -bl
Restore complete (0.5s)
    info NETSDK1057: You are using a preview version of .NET. See: https://aka.ms/dotnet-support-policy
  catalysttest net11.0-maccatalyst maccatalyst-arm64 failed with 16 error(s) (11.6s) → bin/Debug/net11.0-maccatalyst/maccatalyst-arm64/catalysttest.dll
    /Users/rolf/Downloads/dotnet-sdk-11.0.100-preview.1.26081.107-osx-arm64/sdk/11.0.100-preview.1.26081.107/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.CrossGen.targets(488,5): error Error: Failed to load type 'System.Runtime.Intrinsics.Arm.Crc32' from assembly 'System.Private.CoreLib'
    /Users/rolf/Downloads/dotnet-sdk-11.0.100-preview.1.26081.107-osx-arm64/sdk/11.0.100-preview.1.26081.107/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.CrossGen.targets(488,5): error Internal.TypeSystem.TypeSystemException+TypeLoadException: Failed to load type 'System.Runtime.Intrinsics.Arm.Crc32' from assembly 'System.Private.CoreLib'
    /Users/rolf/Downloads/dotnet-sdk-11.0.100-preview.1.26081.107-osx-arm64/sdk/11.0.100-preview.1.26081.107/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.CrossGen.targets(488,5): error    at Internal.TypeSystem.ThrowHelper.ThrowTypeLoadException(ExceptionStringID, String, String)
    /Users/rolf/Downloads/dotnet-sdk-11.0.100-preview.1.26081.107-osx-arm64/sdk/11.0.100-preview.1.26081.107/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.CrossGen.targets(488,5): error    at Internal.TypeSystem.ResolutionFailure.Throw()
    /Users/rolf/Downloads/dotnet-sdk-11.0.100-preview.1.26081.107-osx-arm64/sdk/11.0.100-preview.1.26081.107/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.CrossGen.targets(488,5): error    at Internal.TypeSystem.Ecma.EcmaModule.GetType(ReadOnlySpan`1, ReadOnlySpan`1, NotFoundBehavior)
    /Users/rolf/Downloads/dotnet-sdk-11.0.100-preview.1.26081.107-osx-arm64/sdk/11.0.100-preview.1.26081.107/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.CrossGen.targets(488,5): error    at Internal.TypeSystem.ModuleDesc.GetType(ReadOnlySpan`1, ReadOnlySpan`1, Boolean)
    /Users/rolf/Downloads/dotnet-sdk-11.0.100-preview.1.26081.107-osx-arm64/sdk/11.0.100-preview.1.26081.107/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.CrossGen.targets(488,5): error    at Internal.JitInterface.InstructionSetParser.<LookupPlatformIntrinsicTypes>d__1.MoveNext()
    /Users/rolf/Downloads/dotnet-sdk-11.0.100-preview.1.26081.107-osx-arm64/sdk/11.0.100-preview.1.26081.107/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.CrossGen.targets(488,5): error    at ILCompiler.ReadyToRunHardwareIntrinsicRootProvider.AddCompilationRoots(IRootingServiceProvider)
    /Users/rolf/Downloads/dotnet-sdk-11.0.100-preview.1.26081.107-osx-arm64/sdk/11.0.100-preview.1.26081.107/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.CrossGen.targets(488,5): error    at ILCompiler.Compilation..ctor(DependencyAnalyzerBase`1, NodeFactory, IEnumerable`1, ILProvider, DevirtualizationManager, IEnumerable`1, Logger, InstructionSetSupport)
    /Users/rolf/Downloads/dotnet-sdk-11.0.100-preview.1.26081.107-osx-arm64/sdk/11.0.100-preview.1.26081.107/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.CrossGen.targets(488,5): error    at ILCompiler.ReadyToRunCodegenCompilation..ctor(DependencyAnalyzerBase`1, NodeFactory, IEnumerable`1, ILProvider, Logger, DevirtualizationManager, IEnumerable`1, String, InstructionSetSupport, Boolean, Boolean, Boolean, Boolean, Func`2, String, Boolean, String, Int32, Boolean, Int32, ProfileDataManager, MethodLayoutAlgorithm, FileLayoutAlgorithm, Int32, Boolean, ReadyToRunContainerFormat)
    /Users/rolf/Downloads/dotnet-sdk-11.0.100-preview.1.26081.107-osx-arm64/sdk/11.0.100-preview.1.26081.107/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.CrossGen.targets(488,5): error    at ILCompiler.ReadyToRunCodegenCompilationBuilder.ToCompilation()
    /Users/rolf/Downloads/dotnet-sdk-11.0.100-preview.1.26081.107-osx-arm64/sdk/11.0.100-preview.1.26081.107/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.CrossGen.targets(488,5): error    at ILCompiler.Program.RunSingleCompilation(Dictionary`2, InstructionSetSupport, String, Dictionary`2, HashSet`1, ReadyToRunCompilerContext, Logger)
    /Users/rolf/Downloads/dotnet-sdk-11.0.100-preview.1.26081.107-osx-arm64/sdk/11.0.100-preview.1.26081.107/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.CrossGen.targets(488,5): error    at ILCompiler.Program.Run()
    /Users/rolf/Downloads/dotnet-sdk-11.0.100-preview.1.26081.107-osx-arm64/sdk/11.0.100-preview.1.26081.107/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.CrossGen.targets(488,5): error    at ILCompiler.Crossgen2RootCommand.<>c__DisplayClass211_0.<.ctor>b__0(ParseResult)
    clang : error no such file or directory: 'obj/Debug/net11.0-maccatalyst/maccatalyst-arm64/R2R/catalysttest.r2r.o'
    /Users/rolf/Downloads/dotnet-sdk-11.0.100-preview.1.26081.107-osx-arm64/sdk/11.0.100-preview.1.26081.107/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.CrossGen.targets(666,5): error MSB3073: The command ""/Applications/Xcode_26.2.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang" -gz=zlib -isysroot "/Applications/Xcode_26.2.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.2.sdk" --target=arm64-apple-ios15.0-macabi -dynamiclib -Wl,-dead_strip -Wl,-install_name,"@rpath/catalysttest.r2r.dylib" obj/Debug/net11.0-maccatalyst/maccatalyst-arm64/R2R/catalysttest.r2r.o -o obj/Debug/net11.0-maccatalyst/maccatalyst-arm64/R2R/catalysttest.r2r.dylib" exited with code 1.

Build failed with 16 error(s) in 12.7s

Regression?

No.

Known Workarounds

No response

Configuration

No response

Other information

No response

[rolfbjarne]

It looks like the System.Runtime.Intrinsics.Arm.Crc32 type has been trimmed away, but I'm not sure if that's a problem with the trimmer, or if crossgen should be able to cope with its absence.

[dotnet-policy-service]

Tagging subscribers to 'os-maccatalyst': @vitek-karas, @kotlarmilos, @steveisok, @akoeplinger
See info in area-owners.md if you want to be subscribed.

[jkotas]

cc @jkoritzinsky Introduced by #122249 and related changes