[PATCH] D152568: [InstCombine] Transform `(binop1 (binop2 (lshift X,Amt),Mask),(lshift Y,Amt))`

[Noah Goldstein via Phabricator via llvm-commits]

goldstein.w.n updated this revision to Diff 530394.
goldstein.w.n added a comment.

Add helper for detecting easily distributable ops + ruleout non-distributable ops earlier


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D152568/new/

https://reviews.llvm.org/D152568

Files:
  llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp
  llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp
  llvm/lib/Transforms/InstCombine/InstCombineInternal.h
  llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
  llvm/test/Transforms/InstCombine/and-xor-or.ll
  llvm/test/Transforms/InstCombine/or-shifted-masks.ll
  llvm/test/Transforms/PhaseOrdering/SystemZ/sub-xor.ll

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