[PATCH] D70459: [SCEV] Be robust against IR generated by simple-loop-unswitch

[Philip Reames via Phabricator via llvm-commits]

reames created this revision.
reames added reviewers: apilipenko, nikic.
Herald added subscribers: javed.absar, bollu, hiraditya, mcrosier.
Herald added a project: LLVM.
reames added a reviewer: ebrevnov.

Simple loop unswitch likes to leave around unsimplified and/or/xors.  SCEV today bails out on these idioms which is unfortunate in general, and specifically for the unswitch interaction.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D70459

Files:
  llvm/lib/Analysis/ScalarEvolution.cpp
  llvm/test/Analysis/ScalarEvolution/trip-count-andor.ll

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