[PATCH] D126591: [InstCombine] Optimise shift+and+boolean conversion pattern to simple comparison

[chenglin.bi via Phabricator via llvm-commits]

bcl5980 updated this revision to Diff 432838.
bcl5980 edited the summary of this revision.
bcl5980 added a comment.

1. remove shift+lshr+and pattern
2. update second pattern to make it more general


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D126591/new/

https://reviews.llvm.org/D126591

Files:
  llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp
  llvm/test/Transforms/InstCombine/icmp-and-shift.ll
  llvm/test/Transforms/InstCombine/lshr-and-signbit-icmpeq-zero.ll

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