[all-commits] [llvm/llvm-project] f1aca5: [PowerPC] Fix L[D|W]ARX Implementation

[Conanap via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: f1aca5ac96ebd0beadfa68a474c5947d3bc8c109
      https://github.com/llvm/llvm-project/commit/f1aca5ac96ebd0beadfa68a474c5947d3bc8c109
  Author: Albion Fung <albionapc at gmail.com>
  Date:   2021-07-13 (Tue, 13 Jul 2021)

  Changed paths:
    M clang/lib/CodeGen/CGBuiltin.cpp
    M clang/test/CodeGen/builtins-ppc-xlcompat-LoadReseve-StoreCond-64bit-only.c
    M clang/test/CodeGen/builtins-ppc-xlcompat-LoadReseve-StoreCond.c
    M llvm/include/llvm/IR/IntrinsicsPowerPC.td
    M llvm/lib/Target/PowerPC/PPCInstr64Bit.td
    M llvm/lib/Target/PowerPC/PPCInstrInfo.td
    M llvm/test/CodeGen/PowerPC/builtins-ppc-xlcompat-LoadReserve-StoreCond-64bit-only.ll
    M llvm/test/CodeGen/PowerPC/builtins-ppc-xlcompat-LoadReserve-StoreCond.ll

  Log Message:
  -----------
  [PowerPC] Fix L[D|W]ARX Implementation

LDARX and LWARX sometimes gets optimized out by the compiler
when it is critical to the correctness of the code. This inline asm generation
ensures that it preserved.

Differential Revision: https://reviews.llvm.org/D105754