[all-commits] [llvm/llvm-project] 385118: [SLP]Remove operands upon marking instruction for ...

[Alexey Bataev via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 385118644ccabe27a634804c7db60734746c170f
      https://github.com/llvm/llvm-project/commit/385118644ccabe27a634804c7db60734746c170f
  Author: Alexey Bataev <a.bataev at outlook.com>
  Date:   2024-07-08 (Mon, 08 Jul 2024)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
    M llvm/test/DebugInfo/Generic/assignment-tracking/slp-vectorizer/merge-scalars.ll
    M llvm/test/Transforms/SLPVectorizer/AArch64/spillcost-di.ll
    M llvm/test/Transforms/SLPVectorizer/X86/arith-add-ssat.ll
    M llvm/test/Transforms/SLPVectorizer/X86/arith-add-usat.ll
    M llvm/test/Transforms/SLPVectorizer/X86/arith-add.ll
    M llvm/test/Transforms/SLPVectorizer/X86/arith-fix.ll
    M llvm/test/Transforms/SLPVectorizer/X86/arith-fshl-rot.ll
    M llvm/test/Transforms/SLPVectorizer/X86/arith-fshl.ll
    M llvm/test/Transforms/SLPVectorizer/X86/arith-fshr-rot.ll
    M llvm/test/Transforms/SLPVectorizer/X86/arith-fshr.ll
    M llvm/test/Transforms/SLPVectorizer/X86/arith-mul.ll
    M llvm/test/Transforms/SLPVectorizer/X86/arith-smax.ll
    M llvm/test/Transforms/SLPVectorizer/X86/arith-smin.ll
    M llvm/test/Transforms/SLPVectorizer/X86/arith-sub-ssat.ll
    M llvm/test/Transforms/SLPVectorizer/X86/arith-sub-usat.ll
    M llvm/test/Transforms/SLPVectorizer/X86/arith-sub.ll
    M llvm/test/Transforms/SLPVectorizer/X86/arith-umax.ll
    M llvm/test/Transforms/SLPVectorizer/X86/arith-umin.ll
    M llvm/test/Transforms/SLPVectorizer/X86/horizontal-list.ll
    M llvm/test/Transforms/SLPVectorizer/X86/shift-ashr.ll
    M llvm/test/Transforms/SLPVectorizer/X86/shift-lshr.ll
    M llvm/test/Transforms/SLPVectorizer/X86/shift-shl.ll

  Log Message:
  -----------
  [SLP]Remove operands upon marking instruction for deletion.

If the instruction is marked for deletion, better to drop all its
operands and mark them for deletion too (if allowed). It allows to have
more vectorizable patterns and generate less useless extractelement
instructions.

Reviewers: RKSimon

Reviewed By: RKSimon

Pull Request: https://github.com/llvm/llvm-project/pull/97409



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