[PATCH] D127469: [InstCombine] Optimize lshr+shl+and conversion pattern

[chenglin.bi via Phabricator via llvm-commits]

bcl5980 updated this revision to Diff 435791.
bcl5980 added a comment.

add nullptr check


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D127469/new/

https://reviews.llvm.org/D127469

Files:
  llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp
  llvm/test/Transforms/InstCombine/and.ll

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