[PATCH] D130956: [X86][MC] Always emit `rep` prefix for `bsf`

[Phoebe Wang via Phabricator via llvm-commits]

pengfei updated this revision to Diff 449203.
pengfei marked an inline comment as done.
pengfei added a comment.

Add comment. Thanks @nikic


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D130956/new/

https://reviews.llvm.org/D130956

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

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