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

[Justin Bogner via Phabricator via llvm-commits]

bogner updated this revision to Diff 509504.
bogner added a comment.

Use UniformityAnalysis instead of TTI.

TODO:

- Still need to measure compile time impact, especially on non-gpu/non-divergent targets. This might lead to making some changes to make uniformity analysis as cheap as possible on those targets.
- I'll also add a couple more tests for slightly more complicated cases.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D146823/new/

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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