[PATCH] D151482: [LV] Add support for minimum/maximum intrinsics

[Anna Thomas via Phabricator via llvm-commits]

anna created this revision.
anna added reviewers: fhahn, dmgreen, spatel.
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{mini|maxi}mum intrinsics are different from {min|max}num intrinsics
because the former supports propagation of NaN and handles signed zero.
Add support for identifying reduction patterns using these intrinsics.

There are tests added which show how this interacts across chains of
min/max patterns.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D151482

Files:
  llvm/lib/Analysis/IVDescriptors.cpp
  llvm/test/Transforms/LoopVectorize/minmax_reduction.ll

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