[PATCH] D42533: [X86FixupBWInsts] Fix miscompilation if sibling sub-register is live.

[Andrei Elovikov via Phabricator via llvm-commits]

a.elovikov created this revision.
a.elovikov added reviewers: andrew.w.kaylor, craig.topper, MatzeB.

The issues was found during https://reviews.llvm.org/D40524.


Repository:
  rL LLVM

https://reviews.llvm.org/D42533

Files:
  include/llvm/MC/MCRegisterInfo.h
  lib/Target/X86/X86FixupBWInsts.cpp
  test/CodeGen/X86/fixup-bw-inst.mir

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