[PATCH] D101460: [SLP]Try to vectorize tiny trees with shuffled gathers of extractelements.

[Alexey Bataev via Phabricator via llvm-commits]

ABataev created this revision.
ABataev added reviewers: spatel, RKSimon, dtemirbulatov, anton-afanasyev.
Herald added a subscriber: hiraditya.
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If we gather extract elements and they actually are just shuffles, it
might be profitable to vectorize them even if the tree is tiny.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D101460

Files:
  llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
  llvm/test/Transforms/SLPVectorizer/AArch64/accelerate-vector-functions-inseltpoison.ll
  llvm/test/Transforms/SLPVectorizer/AArch64/accelerate-vector-functions.ll
  llvm/test/Transforms/SLPVectorizer/AArch64/ext-trunc.ll
  llvm/test/Transforms/SLPVectorizer/X86/alternate-cast-inseltpoison.ll
  llvm/test/Transforms/SLPVectorizer/X86/alternate-cast.ll

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