[all-commits] [llvm/llvm-project] fbf0a7: [CodeGen] Avoid potential sideeffects from XOR (#6...

[Bill Wendling via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: fbf0a77e80f18a6d0fd8a28833b0bc87a99b1b2f
      https://github.com/llvm/llvm-project/commit/fbf0a77e80f18a6d0fd8a28833b0bc87a99b1b2f
  Author: Bill Wendling <5993918+bwendling at users.noreply.github.com>
  Date:   2023-10-17 (Tue, 17 Oct 2023)

  Changed paths:
    M llvm/include/llvm/CodeGen/TargetInstrInfo.h
    M llvm/lib/Target/AArch64/AArch64InstrInfo.cpp
    M llvm/lib/Target/AArch64/AArch64InstrInfo.h
    M llvm/lib/Target/X86/X86InstrInfo.cpp
    M llvm/lib/Target/X86/X86InstrInfo.h

  Log Message:
  -----------
  [CodeGen] Avoid potential sideeffects from XOR (#67193)

XOR may change flag values (e.g. for X86 gprs). In the case where that's
not desirable, specify that buildClearRegister() should use MOV instead.