[PATCH] D107017: [GlobalISel] Allow the ArtifactValueFinder to return the best available register on failure.

[Amara Emerson via Phabricator via llvm-commits]

aemerson updated this revision to Diff 363976.
aemerson added a comment.
Herald added subscribers: kerbowa, nhaehnle, jvesely.

Change API to return an empty Register if the best register found is the same as the one being examined.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D107017/new/

https://reviews.llvm.org/D107017

Files:
  llvm/include/llvm/CodeGen/GlobalISel/LegalizationArtifactCombiner.h
  llvm/test/CodeGen/AArch64/GlobalISel/legalize-inserts.mir
  llvm/test/CodeGen/AMDGPU/GlobalISel/bug-legalization-artifact-combiner-dead-def.mir

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