[all-commits] [llvm/llvm-project] 4eecf3: [SLP]Reorder buildvector/reduction vectorization a...

[Alexey Bataev via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4eecf3c650ea53aa00cae2fe983f95ee6ec6705a
      https://github.com/llvm/llvm-project/commit/4eecf3c650ea53aa00cae2fe983f95ee6ec6705a
  Author: Alexey Bataev <a.bataev at outlook.com>
  Date:   2024-07-03 (Wed, 03 Jul 2024)

  Changed paths:
    M llvm/include/llvm/Transforms/Vectorize/SLPVectorizer.h
    M llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
    M llvm/test/Transforms/SLPVectorizer/AArch64/scalarization-overhead.ll
    M llvm/test/Transforms/SLPVectorizer/X86/reused-extractelements.ll

  Log Message:
  -----------
  [SLP]Reorder buildvector/reduction vectorization and fuse the loops.

Currently SLP vectorizer tries at first to find reduction nodes, and
then vectorize buildvector sequences. Need to try to vectorize wide
buildvector sequences at first and only then try to vectorize
reductions, and then smaller buildvector sequences.

Reviewers: RKSimon

Reviewed By: RKSimon

Pull Request: https://github.com/llvm/llvm-project/pull/96943



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