[PATCH] D154004: [InstCombine] Canonicalize `(icmp eq/ne (and x, C), x)` -> `(icmp eq/ne (and x, ~C), 0)`

[Noah Goldstein via Phabricator via llvm-commits]

goldstein.w.n created this revision.
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This increases the likelyhood `x` is single-use and is typically
easier to analyze.

Proofs: https://alive2.llvm.org/ce/z/8ZpS2W


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D154004

Files:
  llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp
  llvm/test/Transforms/InstCombine/canonicalize-constant-low-bit-mask-and-icmp-eq-to-icmp-ule.ll
  llvm/test/Transforms/InstCombine/canonicalize-constant-low-bit-mask-and-icmp-ne-to-icmp-ugt.ll
  llvm/test/Transforms/InstCombine/icmp-logical.ll
  llvm/test/Transforms/InstCombine/select.ll

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