[PATCH] D104538: [CostModel][AArch64] Improve cost model for vector reduce Or intrinsic

[Rosie Sumpter via Phabricator via llvm-commits]

RosieSumpter created this revision.
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Or entries are added to the cost table. An extra cost is added when
vector splitting occurs.

      

This is done to address the issue of a missed SLP vectorization
opportunity due to unreasonably high costs being attributed to the vector
Or reduction (see: https://bugs.llvm.org/show_bug.cgi?id=44593).


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D104538

Files:
  llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
  llvm/test/Analysis/CostModel/AArch64/reduce-or.ll

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