[PATCH] D106578: [SLP]Fix costs calculations.

[Alexey Bataev via Phabricator via llvm-commits]

ABataev created this revision.
ABataev added reviewers: RKSimon, spatel, anton-afanasyev, dtemirbulatov.
Herald added a subscriber: hiraditya.
ABataev requested review of this revision.
Herald added a project: LLVM.

Need to fix several cost-related problems. The final type may be defined
incorrectly because of to early definition (we may end up with the wider
type), the CommonCost should not be redefined in ExtractElements
cost related calculations and the shuffle of the final insertelements
vectors should be calculated as a cost of single vector permutations
+ costs of two vector permutations for other n-1 incoming vectors.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D106578

Files:
  llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
  llvm/test/Transforms/SLPVectorizer/AArch64/PR38339.ll
  llvm/test/Transforms/SLPVectorizer/X86/vec_list_bias-inseltpoison.ll
  llvm/test/Transforms/SLPVectorizer/X86/vec_list_bias.ll

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