[PATCH] D152116: [X86] Transform `(icmp eq/ne (and X, C0), (shift X, C1))` to get better constants.

[Noah Goldstein via Phabricator via llvm-commits]

goldstein.w.n updated this revision to Diff 529198.
goldstein.w.n added a comment.

Move to DAG Combiner and make preferences target specific.
Also handle rotates


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D152116/new/

https://reviews.llvm.org/D152116

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/cmp-shiftX-maskX.ll

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