[all-commits] [llvm/llvm-project] 4ea57b: [SLP]Fix detection of matching splat vector

[Alexey Bataev via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4ea57b3481c07fd8e19315752dfd0a03e1d7bd12
      https://github.com/llvm/llvm-project/commit/4ea57b3481c07fd8e19315752dfd0a03e1d7bd12
  Author: Alexey Bataev <a.bataev at outlook.com>
  Date:   2025-04-10 (Thu, 10 Apr 2025)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
    M llvm/test/Transforms/SLPVectorizer/X86/identity-match-splat-less-defined.ll

  Log Message:
  -----------
  [SLP]Fix detection of matching splat vector

Need to check, that the mask of the potentially matching splat node is
not less defined than the requested mask to avoid poison propagation and
incorrect code.

Fixes #135113



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