[all-commits] [llvm/llvm-project] 84e919: Revert "[X86][MC] Always emit `rep` prefix for `bsf`"

[Craig Topper via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 84e91948289cd606a0cd8a3372398b363d4b5460
      https://github.com/llvm/llvm-project/commit/84e91948289cd606a0cd8a3372398b363d4b5460
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2022-08-03 (Wed, 03 Aug 2022)

  Changed paths:
    M llvm/lib/Target/X86/X86MCInstLower.cpp
    M llvm/test/CodeGen/X86/clz.ll
    M llvm/test/CodeGen/X86/dagcombine-select.ll
    M llvm/test/CodeGen/X86/peephole-na-phys-copy-folding.ll
    M llvm/test/CodeGen/X86/stack-folding-x86_64.ll

  Log Message:
  -----------
  Revert "[X86][MC] Always emit `rep` prefix for `bsf`"

This reverts commit c2066d19cda20d0e98b95da1493e6c3f26fd9618.

It's causing failures on the build bots.