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Unverified Commit 8a7e5477 authored by Yingwei Zheng's avatar Yingwei Zheng Committed by GitHub
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[InstCombine] Canonicalize `(X +/- Y) & Y` into `~X & Y` when Y is a power of 2 (#67915) 

This patch canonicalizes the pattern `(X +/- Y) & Y` into `~X & Y` when `Y` is a power of 2 or zero.
It will reduce the patterns to match in #67836 and exploit more optimization opportunities.
Alive2: https://alive2.llvm.org/ce/z/LBpvRF
parent 2ceabf6b
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