[PATCH] D111681: [IVUsers] Move preheader check into SCEVExpander

[Nikita Popov via Phabricator via llvm-commits]

nikic updated this revision to Diff 379430.
nikic added a comment.

Make the check more precise: We can expand affine addrecs in canonical mode without a preheader. This addresses the PowerPC test failure.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D111681/new/

https://reviews.llvm.org/D111681

Files:
  llvm/include/llvm/Analysis/IVUsers.h
  llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h
  llvm/lib/Analysis/IVUsers.cpp
  llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp
  llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp

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