[PATCH] D125041: [GlobalISel] Combine G_SHL, G_ASHR, G_SHL of undef shifts to undef.

[Amara Emerson via Phabricator via llvm-commits]

aemerson updated this revision to Diff 427733.

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D125041/new/

https://reviews.llvm.org/D125041

Files:
  llvm/include/llvm/Target/GlobalISel/Combine.td
  llvm/test/CodeGen/AArch64/GlobalISel/prelegalizercombiner-undef.mir

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