[PATCH] D146609: [InstCombine] Fold xor of icmps of power of 2

[luxufan via Phabricator via llvm-commits]

StephenFan created this revision.
StephenFan added reviewers: nikic, spatel.
Herald added a subscriber: hiraditya.
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StephenFan requested review of this revision.
Herald added a project: LLVM.
Herald added a subscriber: llvm-commits.

https://alive2.llvm.org/ce/z/HKt_Rg

The motivation to do this is D146149 <https://reviews.llvm.org/D146149> caused a code size regression in
our ci https://github.com/dtcxzyw/llvm-ci/issues/23.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D146609

Files:
  llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp
  llvm/lib/Transforms/InstCombine/InstCombineInternal.h
  llvm/test/Transforms/InstCombine/bit-checks.ll

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