Remove HMFs from JIT helpers

[AaronRobinsonMSFT]

Convert JIT_UserBreakpoint to C#.
Convert JIT_GetRuntimeType and JIT_GetRuntimeType_MaybeNull to C#.

Contributes to #95695

[AaronRobinsonMSFT]

/cc @dotnet/dotnet-diag

Copilot reviewed 2 out of 6 changed files in this pull request and generated no comments.

Files not reviewed (4)

• src/coreclr/inc/jithelpers.h: Language not supported
• src/coreclr/vm/corelib.h: Language not supported
• src/coreclr/vm/jithelpers.cpp: Language not supported
• src/coreclr/vm/metasig.h: Language not supported

[dotnet-policy-service]

Tagging subscribers to this area: @mangod9
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[jkotas]

@EgorBot -windows_intel

using System;
using System.Runtime.CompilerServices;

using BenchmarkDotNet.Attributes;

public class Bench
{
    [MethodImpl(MethodImplOptions.NoInlining)]
    internal Type M<T>() => typeof(T);

    [Benchmark]
    public Type GenericTypeOf() => M<string>();
}

Copilot reviewed 3 out of 16 changed files in this pull request and generated no comments.

Files not reviewed (13)

• src/coreclr/debug/ee/frameinfo.h: Language not supported
• src/coreclr/inc/jithelpers.h: Language not supported
• src/coreclr/inc/vptr_list.h: Language not supported
• src/coreclr/vm/corelib.h: Language not supported
• src/coreclr/vm/ecalllist.h: Language not supported
• src/coreclr/vm/frames.cpp: Language not supported
• src/coreclr/vm/frames.h: Language not supported
• src/coreclr/vm/jithelpers.cpp: Language not supported
• src/coreclr/vm/metasig.h: Language not supported
• src/coreclr/vm/runtimehandles.cpp: Language not supported
• src/coreclr/vm/runtimehandles.h: Language not supported
• src/coreclr/vm/typedesc.cpp: Language not supported
• src/coreclr/vm/typedesc.h: Language not supported

Comments suppressed due to low confidence (1)

src/coreclr/System.Private.CoreLib/src/System/RuntimeHandles.cs:54

• Ensure that AuxiliaryData is defined and used correctly in the context of GetRuntimeTypeFromHandle.

return (h.IsTypeDesc ? h.AsTypeDesc()->ExposedClassObject : h.AsMethodTable()->AuxiliaryData->ExposedClassObject) ?? GetRuntimeTypeFromHandleSlow(handle);

[AaronRobinsonMSFT]

@jkotas Got it back to parity - EgorBot/runtime-utils#225 (comment)

[jkotas]

LGTM. Thanks!