[all-commits] [llvm/llvm-project] 438682: [SLP]Merge reorder and reuse shuffles.

[Alexey Bataev via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 438682de6a38ac97f89fa38faf5c8dc9b09cd9ad
      https://github.com/llvm/llvm-project/commit/438682de6a38ac97f89fa38faf5c8dc9b09cd9ad
  Author: Alexey Bataev <a.bataev at hotmail.com>
  Date:   2020-12-07 (Mon, 07 Dec 2020)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
    M llvm/test/Transforms/SLPVectorizer/AArch64/PR38339.ll
    M llvm/test/Transforms/SLPVectorizer/X86/PR32086.ll

  Log Message:
  -----------
  [SLP]Merge reorder and reuse shuffles.

It is possible to merge reuse and reorder shuffles and reduce the total
cost of the ivectorization tree/number of final instructions.

Differential Revision: https://reviews.llvm.org/D92668