[all-commits] [llvm/llvm-project] 9e0392: [SLP]Ignore root gather node, when searching for r...

[Alexey Bataev via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 9e03920cbf946e7ba282e99213707643a23ae5fb
      https://github.com/llvm/llvm-project/commit/9e03920cbf946e7ba282e99213707643a23ae5fb
  Author: Alexey Bataev <a.bataev at outlook.com>
  Date:   2024-10-21 (Mon, 21 Oct 2024)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
    A llvm/test/Transforms/SLPVectorizer/X86/root-gather-reused-scalar.ll

  Log Message:
  -----------
  [SLP]Ignore root gather node, when searching for reuses

Root gather/buildvector node should be ignored when SLP vectorizer tries
to find matching gather nodes, vectorized earlier. This node is
definitely the last one in the pipeline and it does not have users. It
may cause the compiler crash

Fixes #113143



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