[PATCH] D142344: [DAGCombiner] Add Transform for `(and/or (eq/ne A,Pow2),(eq/ne A,-Pow2))`->`(eq/ne (and (and A,Pow2),~(Pow2*2)), 0)`

Noah Goldstein via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Wed Jan 25 22:12:41 PST 2023


goldstein.w.n updated this revision to Diff 492328.
goldstein.w.n added a comment.

Rebase + fix typo + make only oneuse


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D142344/new/

https://reviews.llvm.org/D142344

Files:
  llvm/include/llvm/CodeGen/TargetLowering.h
  llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  llvm/lib/Target/X86/X86ISelLowering.cpp
  llvm/lib/Target/X86/X86ISelLowering.h
  llvm/test/CodeGen/X86/icmp-pow2-logic-npow2.ll

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