[all-commits] [llvm/llvm-project] c4c2d7: [VPlan] Fix handling of ReductionStartVector for r...

[Florian Hahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: c4c2d777f4aea07c59ff85ade75816df24b05389
      https://github.com/llvm/llvm-project/commit/c4c2d777f4aea07c59ff85ade75816df24b05389
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2025-06-19 (Thu, 19 Jun 2025)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp
    M llvm/test/Transforms/LoopVectorize/AArch64/partial-reduce-interleave.ll

  Log Message:
  -----------
  [VPlan] Fix handling of ReductionStartVector for rdxs when unrolling.

Update handling of ReductionStartVector in VPlanUnroll for partial
reductions. The new code makes sure all parts are properly set to the
cloned ReductionStartVector.

Fixes a mis-compile reported for
https://github.com/llvm/llvm-project/pull/142290.



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