[PATCH] D108136: [LoopVectorize] Permit vectorisation of more select(cmp(), X, Y) reduction patterns

[David Sherwood via Phabricator via llvm-commits]

david-arm updated this revision to Diff 373585.
david-arm added a comment.

- Fixed a crash I found whilst building some benchmarks related to cases where the select/cmp are in a predicated block. Added tests -  Transforms/LoopVectorize/select-cmp-predicated.ll
- Disabled interleaving for small loops when using a select/cmp reduction pattern because this can give worse performance in some cases with small trip counts.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D108136/new/

https://reviews.llvm.org/D108136

Files:
  llvm/include/llvm/Analysis/IVDescriptors.h
  llvm/include/llvm/Transforms/Utils/LoopUtils.h
  llvm/lib/Analysis/IVDescriptors.cpp
  llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
  llvm/lib/Transforms/Utils/LoopUtils.cpp
  llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
  llvm/lib/Transforms/Vectorize/VPlan.cpp
  llvm/test/Transforms/LoopVectorize/AArch64/sve-select-cmp.ll
  llvm/test/Transforms/LoopVectorize/scalable-reduction-inloop.ll
  llvm/test/Transforms/LoopVectorize/select-cmp-predicated.ll
  llvm/test/Transforms/LoopVectorize/select-cmp.ll

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