[all-commits] [llvm/llvm-project] 3b7b95: [VPlan] Support VPWidenSelectRecipe in narrowToSin...

[Florian Hahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 3b7b95f78e24aca5175b8f864bfea2953a2dd34f
      https://github.com/llvm/llvm-project/commit/3b7b95f78e24aca5175b8f864bfea2953a2dd34f
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2025-06-27 (Fri, 27 Jun 2025)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
    M llvm/lib/Transforms/Vectorize/VPlanUtils.h
    A llvm/test/Transforms/LoopVectorize/narrow-to-single-scalar.ll

  Log Message:
  -----------
  [VPlan] Support VPWidenSelectRecipe in narrowToSingleScalar.

VPWidenSelectRecipes are single scalars if all their operands are. Add
support for narrowing them to a single scalar VPReplicateRecipe.

This fixes a crash after
https://github.com/llvm/llvm-project/pull/142433 (aa24029319083) when
due to a replicate recipe not being converted to single-scalar being
hoisted to the vector preheader.



To unsubscribe from these emails, change your notification settings at https://github.com/llvm/llvm-project/settings/notifications