[PATCH] D154264: [LV] Skip VFs < iterations remaining for epilogue vectorization.

[Florian Hahn via Phabricator via llvm-commits]

fhahn created this revision.
fhahn added reviewers: Ayal, gilr, dmgreen.
Herald added subscribers: artagnon, StephenFan, hiraditya.
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fhahn requested review of this revision.
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If a candidate VF for epilogue vectorization is less than the number of
remaining iterations, the epilogue loop would be dead. Skip such factors.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D154264

Files:
  llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h
  llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
  llvm/test/Transforms/LoopVectorize/X86/gather_scatter.ll
  llvm/test/Transforms/LoopVectorize/X86/limit-vf-by-tripcount.ll
  llvm/test/Transforms/LoopVectorize/X86/pr42674.ll

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