[all-commits] [llvm/llvm-project] f3d260: [SLP]Improve/fix subvectors in gather/buildvector ...

[Alexey Bataev via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: f3d2609af3031ddb54030548e86335f295cf49ca
      https://github.com/llvm/llvm-project/commit/f3d2609af3031ddb54030548e86335f295cf49ca
  Author: Alexey Bataev <a.bataev at outlook.com>
  Date:   2024-08-23 (Fri, 23 Aug 2024)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
    M llvm/test/Transforms/PhaseOrdering/AArch64/slpordering.ll
    M llvm/test/Transforms/SLPVectorizer/AArch64/getelementptr.ll
    M llvm/test/Transforms/SLPVectorizer/AArch64/loadorder.ll
    M llvm/test/Transforms/SLPVectorizer/AArch64/multiple_reduction.ll
    M llvm/test/Transforms/SLPVectorizer/AArch64/scalarization-overhead.ll
    M llvm/test/Transforms/SLPVectorizer/AArch64/shuffle-vectors-mask-size.ll
    M llvm/test/Transforms/SLPVectorizer/AArch64/tsc-s116.ll
    M llvm/test/Transforms/SLPVectorizer/AArch64/vectorizable-selects-uniform-cmps.ll
    M llvm/test/Transforms/SLPVectorizer/RISCV/combined-loads-stored.ll
    M llvm/test/Transforms/SLPVectorizer/RISCV/reductions.ll
    M llvm/test/Transforms/SLPVectorizer/SystemZ/pr34619.ll
    M llvm/test/Transforms/SLPVectorizer/X86/addsub.ll
    M llvm/test/Transforms/SLPVectorizer/X86/extract-many-users-buildvector.ll
    M llvm/test/Transforms/SLPVectorizer/X86/extract-scalar-from-undef.ll
    M llvm/test/Transforms/SLPVectorizer/X86/gather-node-same-as-vect-but-order.ll
    M llvm/test/Transforms/SLPVectorizer/X86/horizontal-minmax.ll
    M llvm/test/Transforms/SLPVectorizer/X86/inst_size_bug.ll
    M llvm/test/Transforms/SLPVectorizer/X86/landing_pad.ll
    M llvm/test/Transforms/SLPVectorizer/X86/phi.ll
    M llvm/test/Transforms/SLPVectorizer/X86/reduction-logical.ll
    M llvm/test/Transforms/SLPVectorizer/X86/remark-partial-loads-vectorize.ll
    M llvm/test/Transforms/SLPVectorizer/X86/scatter-vectorize-reused-pointer.ll
    M llvm/test/Transforms/SLPVectorizer/X86/schedule_budget_debug_info.ll
    M llvm/test/Transforms/SLPVectorizer/X86/split-load8_2-unord.ll
    M llvm/test/Transforms/SLPVectorizer/X86/tiny-tree.ll
    M llvm/test/Transforms/SLPVectorizer/X86/vect-gather-same-nodes.ll

  Log Message:
  -----------
  [SLP]Improve/fix subvectors in gather/buildvector nodes handling

SLP vectorizer has an estimation for gather/buildvector nodes, which
contain some scalar loads. SLP vectorizer performs pretty similar (but
large in SLOCs) estimation, which not always correct. Instead, this
patch implements clustering analysis and actual node allocation with the
full analysis for the vectorized clustered scalars (not only loads, but
also some other instructions) with the correct cost estimation and
vector insert instructions. Improves overall vectorization quality and
simplifies analysis/estimations.

Reviewers: RKSimon

Reviewed By: RKSimon

Pull Request: https://github.com/llvm/llvm-project/pull/104144



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