[PATCH] D43349: [InstCombine] Make SimplifyDemandedUseBits handle PhiNode

[Rong Xu via Phabricator via llvm-commits]

xur created this revision.
xur added a reviewer: craig.topper.

This patch enables SimplifyDemandedUseBits to handle PhiNode so that some redundant instructions across the PhiNode can be eliminated.


https://reviews.llvm.org/D43349

Files:
  lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp
  test/Transforms/InstCombine/simplify-demanded-bits-across-phi.ll

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