[all-commits] [llvm/llvm-project] 70a54b: [SLP]Improve/fix extracts calculations for non-pow...

[Alexey Bataev via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 70a54bca6f7f9f45b4b17974ddaa01cd7a5d64be
      https://github.com/llvm/llvm-project/commit/70a54bca6f7f9f45b4b17974ddaa01cd7a5d64be
  Author: Alexey Bataev <a.bataev at outlook.com>
  Date:   2024-05-24 (Fri, 24 May 2024)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
    M llvm/test/Transforms/SLPVectorizer/AMDGPU/reduction.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/hadd-inseltpoison.ll
    M llvm/test/Transforms/SLPVectorizer/X86/hadd.ll
    M llvm/test/Transforms/SLPVectorizer/X86/scalarazied-result.ll

  Log Message:
  -----------
  [SLP]Improve/fix extracts calculations for non-power-of-2 elements.

One of the previous patches introduced initial support for non-power-of-2
number of elements but some parts of the SLP vectorizer still were not
adjusted to handle the costs correctly. Patch fixes it by improving
analysis of the non-power-of-2 number of elements and fixes in the cost
of the extractelements instructions.

Reviewers: RKSimon

Reviewed By: RKSimon

Pull Request: https://github.com/llvm/llvm-project/pull/93213



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