[PATCH] D107106: [SLP]Do not consider deleted instruction as external users.

[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.

If the instruction was previously deleted, it should not be treated as
an external user. This fixes cost estimation and removes dead
extractelement instructions.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D107106

Files:
  llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
  llvm/test/Transforms/SLPVectorizer/AArch64/gather-root.ll
  llvm/test/Transforms/SLPVectorizer/SystemZ/pr34619.ll
  llvm/test/Transforms/SLPVectorizer/X86/PR39774.ll
  llvm/test/Transforms/SLPVectorizer/X86/addsub.ll
  llvm/test/Transforms/SLPVectorizer/X86/horizontal-minmax.ll
  llvm/test/Transforms/SLPVectorizer/X86/ordering-bug.ll
  llvm/test/Transforms/SLPVectorizer/X86/resched.ll

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