[PATCH] D99687: [SCEV] Compute ranges for ashr/lshr recurrences

[Philip Reames via Phabricator via llvm-commits]

reames created this revision.
reames added reviewers: fhahn, mkazantsev, nikic.
Herald added subscribers: dantrushin, hiraditya, mcrosier.
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reames requested review of this revision.
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Herald added a subscriber: llvm-commits.

Straight forward extension to the recently added infrastructure which was pioneered with shl.

@reviewers - I always have trouble with wrapping arithmetic, so please sanity check my usage of ranges and reasoning.


https://reviews.llvm.org/D99687

Files:
  llvm/lib/Analysis/ScalarEvolution.cpp
  llvm/test/Analysis/ScalarEvolution/shift-recurrences.ll

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