[all-commits] [llvm/llvm-project] ad652e: [AArch64][PAC][clang][ELF] Support PAuth ABI core ...

[Daniil Kovalev via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ad652efa1f65e16f5380acfba1bb132145984805
      https://github.com/llvm/llvm-project/commit/ad652efa1f65e16f5380acfba1bb132145984805
  Author: Daniil Kovalev <dkovalev at accesssoftek.com>
  Date:   2024-05-09 (Thu, 09 May 2024)

  Changed paths:
    M clang/include/clang/Basic/Features.def
    M clang/include/clang/Basic/LangOptions.def
    M clang/include/clang/Driver/Options.td
    M clang/lib/CodeGen/CodeGenModule.cpp
    M clang/lib/Driver/ToolChains/Clang.cpp
    M clang/lib/Frontend/CompilerInvocation.cpp
    A clang/test/CodeGen/aarch64-elf-pauthabi.c
    M clang/test/Driver/aarch64-ptrauth.c
    M clang/test/Preprocessor/ptrauth_feature.c

  Log Message:
  -----------
  [AArch64][PAC][clang][ELF] Support PAuth ABI core info (#85235)

Depends on #87545

Emit PAuth ABI compatibility tag values as llvm module flags:
- `aarch64-elf-pauthabi-platform`
- `aarch64-elf-pauthabi-version`

For platform 0x10000002 (llvm_linux), the version value bits correspond
to the following LangOptions defined in #85232:

- bit 0: `PointerAuthIntrinsics`;
- bit 1: `PointerAuthCalls`;
- bit 2: `PointerAuthReturns`;
- bit 3: `PointerAuthAuthTraps`;
- bit 4: `PointerAuthVTPtrAddressDiscrimination`;
- bit 5: `PointerAuthVTPtrTypeDiscrimination`;
- bit 6: `PointerAuthInitFini`.

---------

Co-authored-by: Ahmed Bougacha <ahmed at bougacha.org>



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