[mono][aot] Emit only virtual methods of instances when a class insta…

[vargaz]

…nce is added.

[vargaz]

This saves a lot of space, but it might cause regressions since less method instances are emitted.

[lewing]

runtime (Build Linux x64 Release AllSubsets_Mono_LLVMFullAot_RuntimeTests llvmfullaot) failed with

Ran out of trampolines of type 3 in '/datadisks/disk1/work/B6DC09BF/p/System.Private.CoreLib.dll' (limit 4400)

which I don't think is unique to this?

[lambdageek]

Won't this leave out a ton of methods? Why do we only want virtual ones?

For example anything that uses typeof(GenericParam) will be left out:

class GenericContainer<T> {
  public int SomeMethod() {
    if (typeof(T) == typeof(string))
      return 1;
    return 2;
   }
}

[vargaz]

This is just an experiment. Right now, if we encounter a generic instance, we will add all of its methods which leads to a ton of code generated which will never be called.

[vargaz]

/azp run runtime-wasm

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Azure Pipelines successfully started running 1 pipeline(s).

[vargaz]

/azp run runtime

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[vargaz]

/azp run runtime-extra-platforms-other

[azure-pipelines]

No pipelines are associated with this pull request.

[vargaz]

/azp run runtime-llvm

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Azure Pipelines failed to run 1 pipeline(s).

[vargaz]

/azp run list

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No pipelines are associated with this pull request.

[vargaz]

/azp list

[azure-pipelines]

CI/CD Pipelines for this repository:

• runtime-coreclr outerloop
• runtime-coreclr jitstress
• runtime-coreclr jitstressregs
• runtime-coreclr jitstress2-jitstressregs
• runtime-coreclr gcstress0x3-gcstress0xc
• runtime-coreclr gcstress-extra
• runtime-coreclr r2r-extra
• runtime-coreclr jitstress-isas-x86
• runtime-coreclr jitstress-isas-arm
• runtime-coreclr jitstressregs-x86
• runtime-coreclr libraries-jitstressregs
• runtime-coreclr libraries-jitstress2-jitstressregs
• runtime-coreclr r2r
• runtime-coreclr runincontext
• runtime-coreclr crossgen2
• runtime-libraries-coreclr outerloop
• runtime-libraries-coreclr outerloop-windows
• runtime-libraries-coreclr outerloop-linux
• runtime-libraries-coreclr outerloop-osx
• runtime
• runtime-libraries enterprise-linux
• runtime-libraries stress-http
• runtime-libraries stress-ssl
• runtime-dev-innerloop
• runtime-coreclr crossgen2 outerloop
• coreclr-release-outerloop-nightly
• runtime-coreclr crossgen2-composite
• runtime-jit-experimental
• runtime-coreclr libraries-jitstress
• dotnet-linker-tests
• runtime-coreclr ilasm
• runtime-coreclr crossgen2-composite gcstress
• runtime-staging
• runtime-coreclr pgo
• runtime-coreclr libraries-pgo
• Antigen
• runtime-community
• Fuzzlyn
• runtime-coreclr superpmi-replay
• runtime-wasm
• runtime-coreclr superpmi-diffs
• runtime-coreclr superpmi-asmdiffs-checked-release
• runtime-extra-platforms
• jit-cfg
• runtime-wasm-perf
• runtime-llvm
• runtime-coreclr jitstress-random
• runtime-coreclr libraries-jitstress-random
• runtime-android-grpc-client-tests
• runtime-wasm-libtests
• runtime-wasm-non-libtests
• runtime-android
• runtime-androidemulator
• runtime-ioslike
• runtime-ioslikesimulator
• runtime-linuxbionic
• runtime-maccatalyst
• runtime-coreclr pgostress
• runtime-coreclr jitstress-isas-avx512
• runtime-tools-tests
• runtime-libraries-mono outerloop
• runtime-sanitized

[vargaz]

/azp run runtime-llvm

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Azure Pipelines failed to run 1 pipeline(s).

[vargaz]

/azp run runtime-llvm

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Azure Pipelines failed to run 1 pipeline(s).

[vargaz]

This saves about 100k (2%) on a wasm hello world.

[vargaz]

/azp run runtime-wasm

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Azure Pipelines successfully started running 1 pipeline(s).