[PATCH] D80773: [SLP] Apply external to vectorizable tree users cost adjustment for relevant aggregate build instructions only (UserCost).

[Valeriy Dmitriev via Phabricator via llvm-commits]

vdmitrie created this revision.
vdmitrie added reviewers: spatel, RKSimon, anton-afanasyev, ABataev, vporpo, craig.topper, dtemirbulatov.
Herald added subscribers: llvm-commits, hiraditya.
Herald added a project: LLVM.

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.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D80773

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

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