[all-commits] [llvm/llvm-project] 535df4: Revert rG2149aa73f640c96 "[X86] Add support for re...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 535df472b04208d6ae88e017c8f1d831fb239346
      https://github.com/llvm/llvm-project/commit/535df472b04208d6ae88e017c8f1d831fb239346
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2021-04-25 (Sun, 25 Apr 2021)

  Changed paths:
    M llvm/lib/Target/X86/X86InstrInfo.cpp
    M llvm/test/CodeGen/X86/atomic-eflags-reuse.ll
    M llvm/test/CodeGen/X86/atomic-flags.ll

  Log Message:
  -----------
  Revert rG2149aa73f640c96 "[X86] Add support for reusing ZF etc. from locked XADD instructions (PR20841)"

This might be the cause of some msan build failures - I don't have access to a msan build right now, so this is a speculative revert.