[PATCH] D117580: [LoopVectorize] Support conditional in-loop vector reductions

[Kerry McLaughlin via Phabricator via llvm-commits]

kmclaughlin updated this revision to Diff 410309.
kmclaughlin marked 4 inline comments as done.
kmclaughlin added a comment.

- Changes to tryToBlend() so that all incoming values of the Phi are checked for in-loop reductions.
- Added an assert to tryToBlend() that the number of incoming values to the Phi is 2 if an in-loop reduction is found. Also added an assert that only one of the incoming values is an in-loop reduction.
- Reworded the comment describing the number of uses of Phi in getReductionOpChain().


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D117580/new/

https://reviews.llvm.org/D117580

Files:
  llvm/lib/Analysis/IVDescriptors.cpp
  llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
  llvm/test/Transforms/LoopVectorize/AArch64/scalable-reduction-inloop-cond.ll
  llvm/test/Transforms/LoopVectorize/AArch64/sve-tail-folding.ll
  llvm/test/Transforms/LoopVectorize/reduction-inloop-cond.ll
  llvm/test/Transforms/LoopVectorize/reduction-inloop-uf4.ll

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