[PATCH] D42290: [SCEV] Clear poison flags during expansion of SCEV

[Serguei Katkov via Phabricator via llvm-commits]

skatkov updated this revision to Diff 131029.
skatkov added a comment.

Added regression test. Taken from @eastig.


https://reviews.llvm.org/D42290

Files:
  lib/Analysis/ScalarEvolution.cpp
  lib/Analysis/ScalarEvolutionExpander.cpp
  test/Transforms/LoopStrengthReduce/duplicate-mul.ll

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