[all-commits] [llvm/llvm-project] 95e5d4: [SLP]Improve splats vectorization.

[cilkplus via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 95e5d401ae6c773e9f531f9c6ce62faf03dcd394
      https://github.com/llvm/llvm-project/commit/95e5d401ae6c773e9f531f9c6ce62faf03dcd394
  Author: Alexey Bataev <a.bataev at outlook.com>
  Date:   2021-07-30 (Fri, 30 Jul 2021)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
    M llvm/test/Transforms/SLPVectorizer/AArch64/loadi8.ll
    M llvm/test/Transforms/SLPVectorizer/AArch64/vectorizable-selects-uniform-cmps.ll
    M llvm/test/Transforms/SLPVectorizer/AArch64/vectorize-free-extracts-inserts.ll
    M llvm/test/Transforms/SLPVectorizer/X86/PR35628_2.ll
    M llvm/test/Transforms/SLPVectorizer/X86/bad-reduction.ll
    M llvm/test/Transforms/SLPVectorizer/X86/barriercall.ll
    M llvm/test/Transforms/SLPVectorizer/X86/broadcast.ll
    M llvm/test/Transforms/SLPVectorizer/X86/commutativity.ll
    M llvm/test/Transforms/SLPVectorizer/X86/cse.ll
    M llvm/test/Transforms/SLPVectorizer/X86/diamond.ll
    M llvm/test/Transforms/SLPVectorizer/X86/diamond_broadcast.ll
    M llvm/test/Transforms/SLPVectorizer/X86/extractcost.ll
    M llvm/test/Transforms/SLPVectorizer/X86/horizontal-list.ll
    M llvm/test/Transforms/SLPVectorizer/X86/insert-after-bundle.ll
    M llvm/test/Transforms/SLPVectorizer/X86/loopinvariant.ll
    M llvm/test/Transforms/SLPVectorizer/X86/multi_user.ll
    M llvm/test/Transforms/SLPVectorizer/X86/remark_extract_broadcast.ll
    M llvm/test/Transforms/SLPVectorizer/X86/resched.ll
    M llvm/test/Transforms/SLPVectorizer/X86/saxpy.ll
    M llvm/test/Transforms/SLPVectorizer/X86/tiny-tree.ll
    M llvm/test/Transforms/SLPVectorizer/X86/used-reduced-op.ll
    M llvm/test/Transforms/SLPVectorizer/slp-max-phi-size.ll

  Log Message:
  -----------
  [SLP]Improve splats vectorization.

Replace insertelement instructions for splats with just single
insertelement + broadcast shuffle. Also, try to merge these instructions
if they come from the same/shuffled gather node.

Differential Revision: https://reviews.llvm.org/D107104