[PATCH] D104661: [InstSimplify] Add more poison folding optimizations

[Juneyoung Lee via Phabricator via llvm-commits]

aqjune updated this revision to Diff 353648.
aqjune added a comment.

- Make poison check independent from Q.isUndefValue query calls
- Remove `xor poison, X -> poison` folding to avoid `xor poison, poison -> poison` as mentioned in D104648 <https://reviews.llvm.org/D104648>


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D104661/new/

https://reviews.llvm.org/D104661

Files:
  llvm/lib/Analysis/InstructionSimplify.cpp
  llvm/test/Transforms/InstCombine/and-narrow.ll
  llvm/test/Transforms/InstCombine/select-binop-cmp.ll
  llvm/test/Transforms/InstSimplify/ConstProp/poison.ll
  llvm/test/Transforms/InstSimplify/and.ll
  llvm/test/Transforms/InstSimplify/fcmp.ll
  llvm/test/Transforms/InstSimplify/mul.ll
  llvm/test/Transforms/InstSimplify/or.ll
  llvm/test/Transforms/InstSimplify/select-inseltpoison.ll
  llvm/test/Transforms/InstSimplify/select.ll
  llvm/test/Transforms/InstSimplify/shift.ll
  llvm/test/Transforms/InstSimplify/sub.ll

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