[all-commits] [llvm/llvm-project] decab8: Revert rG9b7a0a50355d5 - Revert "[X86] Add support...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: decab8e9730598831d0de542186709dd126b1f3d
      https://github.com/llvm/llvm-project/commit/decab8e9730598831d0de542186709dd126b1f3d
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2021-04-27 (Tue, 27 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 rG9b7a0a50355d5 - Revert "[X86] Add support for reusing ZF etc. from locked XADD instructions (PR20841)"

Still causing some sanitizer buildbot failures.