[all-commits] [llvm/llvm-project] 26dd12: [SLP]Do not propagate nuw/nsw flags for alt nodes, ...

[Alexey Bataev via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 26dd12871ca8a3dcc5e6920add231af354310088
      https://github.com/llvm/llvm-project/commit/26dd12871ca8a3dcc5e6920add231af354310088
  Author: Alexey Bataev <a.bataev at outlook.com>
  Date:   2024-03-26 (Tue, 26 Mar 2024)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
    M llvm/test/Transforms/SLPVectorizer/X86/reorder_diamond_match.ll

  Log Message:
  -----------
  [SLP]Do not propagate nuw/nsw flags for alt nodes, affected by
minbitwidth analysis.

Need to drop nuw/nsw flags, if the alternate node is resized after the
minbitwidth analysis, to avoid producing poison values in corner cases.



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