[PATCH] D93973: [SCEV] Simplify trunc to zero based on known bits

Gil Rapaport via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Sat Jan 2 23:31:28 PST 2021


gilr updated this revision to Diff 314269.
gilr added a comment.

Limit trailing-zeros check to SCEVUnknowns and only while depth limit is not reached.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D93973/new/

https://reviews.llvm.org/D93973

Files:
  llvm/lib/Analysis/ScalarEvolution.cpp
  llvm/test/Analysis/ScalarEvolution/trunc-simplify.ll
  llvm/test/Transforms/LoopVectorize/dont-fold-tail-for-assumed-divisible-TC.ll

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