[all-commits] [llvm/llvm-project] cab6cd: [AArch64][LoopVectorize] Introduce trip count mini...

[Dinar Temirbulatov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: cab6cd68340255be241b7cf169c67a1899ced115
      https://github.com/llvm/llvm-project/commit/cab6cd68340255be241b7cf169c67a1899ced115
  Author: Dinar Temirbulatov <dinar.temirbulatov at arm.com>
  Date:   2022-08-09 (Tue, 09 Aug 2022)

  Changed paths:
    M llvm/include/llvm/Analysis/TargetTransformInfo.h
    M llvm/include/llvm/Analysis/TargetTransformInfoImpl.h
    M llvm/lib/Analysis/TargetTransformInfo.cpp
    M llvm/lib/Target/AArch64/AArch64TargetTransformInfo.h
    M llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
    M llvm/test/Transforms/LoopVectorize/AArch64/sve-low-trip-count.ll

  Log Message:
  -----------
  [AArch64][LoopVectorize] Introduce trip count minimal value threshold to ignore tail-folding.

After D121595 was commited, I noticed regressions assosicated with small trip
count numbersvectorisation by tail folding with scalable vectors. As a solution
for those issues I propose to introduce the minimal trip count threshold value.

  Differential Revision: https://reviews.llvm.org/D130755