[all-commits] [llvm/llvm-project] f41377: [SLP]Fix last instruction selection for vectorized...

[Alexey Bataev via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: f413772b318c2da4dfc488df81cb3c458606301f
      https://github.com/llvm/llvm-project/commit/f413772b318c2da4dfc488df81cb3c458606301f
  Author: Alexey Bataev <a.bataev at outlook.com>
  Date:   2025-04-07 (Mon, 07 Apr 2025)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
    A llvm/test/Transforms/SLPVectorizer/X86/split-node-last-inst-vectorized.ll

  Log Message:
  -----------
  [SLP]Fix last instruction selection for vectorized last instruction in SplitVectorize nodes

If the last instruction in the SplitVectorize node is vectorized and
scheduled as part of some bundles, the SplitVectorize node might be
placed in the wrong order, leading to a compiler crash. Need to check if
the vectorized node has vector value and place the SplitVectorize node after the vector instruction to prevent a compile crash.

Fixes issue reported in https://github.com/llvm/llvm-project/pull/133091#issuecomment-2782826805



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