[all-commits] [llvm/llvm-project] 3deeb0: [SLP]Fix dep accounting when cancelling a bundle w...

[Alexey Bataev via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 3deeb018ed1d1c61ad9e1798161128e0202e7920
      https://github.com/llvm/llvm-project/commit/3deeb018ed1d1c61ad9e1798161128e0202e7920
  Author: Alexey Bataev <a.bataev at outlook.com>
  Date:   2026-09-13 (Sun, 13 Sep 2026)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
    A llvm/test/Transforms/SLPVectorizer/X86/cancelled-copyable-self-use-deps-2.ll

  Log Message:
  -----------
  [SLP]Fix dep accounting when cancelling a bundle with repeated copyable users

Skip duplicate users instead of stopping at the first one when walking
the operand lanes; an early stop misses a trailing self-use lane, the
displaced parent-edge copyable data is never restored, and scheduling
asserts.

Fixes #223225

Reviewers: 

Pull Request: https://github.com/llvm/llvm-project/pull/223236



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