[all-commits] [llvm/llvm-project] 45090b: [SLP]Check the whole def-use chain in the tree to ...

[Alexey Bataev via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 45090b3059562b32723cd25679db75d1574ab04e
      https://github.com/llvm/llvm-project/commit/45090b3059562b32723cd25679db75d1574ab04e
  Author: Alexey Bataev <a.bataev at outlook.com>
  Date:   2025-03-18 (Tue, 18 Mar 2025)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
    A llvm/test/Transforms/SLPVectorizer/X86/same-last-instruction-different-parents.ll

  Log Message:
  -----------
  [SLP]Check the whole def-use chain in the tree to find proper dominance, if the last instruction is the same

If the insertion point (last instruction) of the user nodes is the same,
need to check the whole def-use chain in the tree to find proper
dominance to prevent a compiler crash.

Fixes #131818



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