[PATCH] D130755: [LoopVectorize] Introduce trip count minimal value threshold to ignore tail-folding for scalable vectors

[Dinar Temirbulatov via Phabricator via llvm-commits]

dtemirbulatov created this revision.
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After D121595 <https://reviews.llvm.org/D121595> was commited, I noticed regressions assosicated with small trip count numbers vectorization by tail folding with scalable vectors. As a solution for those issues I propose to introduce the minimal trip count threshold value.


https://reviews.llvm.org/D130755

Files:
  llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
  llvm/test/Transforms/LoopVectorize/AArch64/sve-low-trip-count.ll
  llvm/test/Transforms/LoopVectorize/RISCV/low-trip-count.ll

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