[all-commits] [llvm/llvm-project] a45688: [SLP] Apply external to vectorizable tree users co...

[Valery Dmitriev via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: a45688a72c63b6359df7c23f2a2895f271d414e9
      https://github.com/llvm/llvm-project/commit/a45688a72c63b6359df7c23f2a2895f271d414e9
  Author: Valery N Dmitriev <valery.n.dmitriev at intel.com>
  Date:   2020-05-29 (Fri, 29 May 2020)

  Changed paths:
    M llvm/include/llvm/Transforms/Vectorize/SLPVectorizer.h
    M llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
    M llvm/test/Transforms/SLPVectorizer/AArch64/transpose.ll
    M llvm/test/Transforms/SLPVectorizer/X86/alternate-fp.ll
    M llvm/test/Transforms/SLPVectorizer/X86/alternate-int.ll
    M llvm/test/Transforms/SLPVectorizer/X86/hadd.ll
    M llvm/test/Transforms/SLPVectorizer/X86/hsub.ll
    M llvm/test/Transforms/SLPVectorizer/X86/load-merge.ll
    M llvm/test/Transforms/SLPVectorizer/X86/vec_list_bias.ll

  Log Message:
  -----------
  [SLP] Apply external to vectorizable tree users cost adjustment for
relevant aggregate build instructions only (UserCost).
Users are detected with findBuildAggregate routine and the trick is
that following SLP vectorization may end up vectorizing entire list
with smaller chunks. Cost adjustment then is applied for individual
chunks and these adjustments obviously have to be smaller than the
entire aggregate build cost.

Differential Revision: https://reviews.llvm.org/D80773