[all-commits] [llvm/llvm-project] c7fb0e: [clang][x86] Add constexpr support for ADC/SBB + A...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: c7fb0eed05e768093fc202e94df1c0d88fd7c2f0
      https://github.com/llvm/llvm-project/commit/c7fb0eed05e768093fc202e94df1c0d88fd7c2f0
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2024-10-02 (Wed, 02 Oct 2024)

  Changed paths:
    M clang/docs/LanguageExtensions.rst
    M clang/docs/ReleaseNotes.rst
    M clang/include/clang/Basic/BuiltinsX86.def
    M clang/include/clang/Basic/BuiltinsX86_64.def
    M clang/lib/AST/ExprConstant.cpp
    M clang/lib/Headers/adcintrin.h
    M clang/lib/Headers/adxintrin.h
    M clang/test/CodeGen/X86/adc-builtins.c
    M clang/test/CodeGen/X86/adx-builtins.c

  Log Message:
  -----------
  [clang][x86] Add constexpr support for ADC/SBB + ADX intrinsics (#110668)

ADC and ADX use the same internal intrinsics - for testing I've taken the same approach as the generic builtin overflow tests, putting the intrinsics in a constexpr test wrapper and comparing the carry/result value pair.

I've added the addcarry/subborrow intrinsics to the clang language extension list - I'm not sure if we want to add all ISA intrinsics to the list (although we can if people think it useful?), but I felt we should at least include the baseline x86 intrinsics.



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