[PATCH] D126617: [InstCombine] Optimize shl+lshr+and conversion pattern

chenglin.bi via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Mon May 30 22:02:03 PDT 2022


bcl5980 updated this revision to Diff 433013.
bcl5980 retitled this revision from " [InstCombine] Optimize shift+lshr+and conversion pattern to simple comparison." to " [InstCombine] Optimize shl+lshr+and conversion pattern".
bcl5980 edited the summary of this revision.
bcl5980 added a comment.

1. rebase code
2. remove lshr+lshr pattern
3. add a new transform to make shift+and have higher priority


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D126617/new/

https://reviews.llvm.org/D126617

Files:
  llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp
  llvm/test/Transforms/InstCombine/and.ll
  llvm/test/Transforms/InstCombine/icmp-and-shift.ll

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