[PATCH] D146823: [GVN] Avoid replacing uniforms with non-uniforms in propagateEquality

[Justin Bogner via Phabricator via llvm-commits]

bogner created this revision.
bogner added reviewers: foad, arsenm.
Herald added subscribers: StephenFan, hiraditya, mcrosier.
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When propagating equality, avoid replacing values that are known to be
uniform when that will lead to information loss, since that's very
likely to pessimize performance.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D146823

Files:
  llvm/include/llvm/Transforms/Scalar/GVN.h
  llvm/lib/Transforms/Scalar/GVN.cpp
  llvm/test/Transforms/GVN/uniform-values.ll

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