[all-commits] [llvm/llvm-project] 59a67e: [SLP]Improve costs in computeExtractCost() to avoi...

[Alexey Bataev via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 59a67ea35d608480257fc64ec3e5106ef50de740
      https://github.com/llvm/llvm-project/commit/59a67ea35d608480257fc64ec3e5106ef50de740
  Author: Alexey Bataev <a.bataev at outlook.com>
  Date:   2023-09-28 (Thu, 28 Sep 2023)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
    M llvm/test/Transforms/SLPVectorizer/AMDGPU/add_sub_sat-inseltpoison.ll
    M llvm/test/Transforms/SLPVectorizer/AMDGPU/add_sub_sat.ll
    M llvm/test/Transforms/SLPVectorizer/AMDGPU/crash_extract_subvector_cost.ll
    M llvm/test/Transforms/SLPVectorizer/AMDGPU/phi-result-use-order.ll
    M llvm/test/Transforms/SLPVectorizer/RISCV/math-function.ll
    M llvm/test/Transforms/SLPVectorizer/X86/alternate-calls-inseltpoison.ll
    M llvm/test/Transforms/SLPVectorizer/X86/alternate-calls.ll
    M llvm/test/Transforms/SLPVectorizer/X86/crash_clear_undefs.ll
    M llvm/test/Transforms/SLPVectorizer/X86/hadd-inseltpoison.ll
    M llvm/test/Transforms/SLPVectorizer/X86/hadd.ll
    M llvm/test/Transforms/SLPVectorizer/X86/hsub-inseltpoison.ll
    M llvm/test/Transforms/SLPVectorizer/X86/hsub.ll
    M llvm/test/Transforms/SLPVectorizer/X86/reduction-transpose.ll

  Log Message:
  -----------
  [SLP]Improve costs in computeExtractCost() to avoid crash after D158449.

Need to consider the length of the original vector for extractelements,
not the length, matched number of the scalars. It fixes 2 issues: 1)
improves cost estimation; 2) Fixes crashes after D158449.