[all-commits] [llvm/llvm-project] bbde3e: [VPlan] Preserve IsSingleScalar for sunken predica...

[Florian Hahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: bbde3e3b59c8f7d8eee940a5aeb4eb5a849c05f4
      https://github.com/llvm/llvm-project/commit/bbde3e3b59c8f7d8eee940a5aeb4eb5a849c05f4
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2026-03-03 (Tue, 03 Mar 2026)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
    M llvm/test/Transforms/LoopVectorize/if-pred-stores.ll

  Log Message:
  -----------
  [VPlan] Preserve IsSingleScalar for sunken predicated stores. (#184329)

The predicated stores may be single scalar (e.g. for VF = 1). We should
preserve IsSingleScalar. As all stores access the same address,
IsSingleScalar must match across all stores in the group.

This fixes an assertion when interleaving-only with sunken stores.

Fixes https://github.com/llvm/llvm-project/issues/184317

PR: https://github.com/llvm/llvm-project/pull/184329



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