[all-commits] [llvm/llvm-project] bbd52d: [SLP]Remove operands upon marking instruction for ...

[Alexey Bataev via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: bbd52dd44ceee80e3b6ba6a9b2bd8ee9a9713833
      https://github.com/llvm/llvm-project/commit/bbd52dd44ceee80e3b6ba6a9b2bd8ee9a9713833
  Author: Alexey Bataev <a.bataev at outlook.com>
  Date:   2024-07-03 (Wed, 03 Jul 2024)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
    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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