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[InstCombine] Fold xor of icmps of power of 2
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Authored by StephenFan on Mar 21 2023, 11:45 PM.

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Reviewers
nikic
spatel
Summary

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

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

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StephenFan created this revision.Mar 21 2023, 11:45 PM
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Rename some variables.