[all-commits] [llvm/llvm-project] 6847e8: [LV] Add support for partial reduction chains with...

[Sander de Smalen via All-commits]

  Branch: refs/heads/users/sdesmalen-arm/partial-reduce-fsub-chain
  Home:   https://github.com/llvm/llvm-project
  Commit: 6847e87db20cd3ff3d69d62e51f3b3019097c3ae
      https://github.com/llvm/llvm-project/commit/6847e87db20cd3ff3d69d62e51f3b3019097c3ae
  Author: Sander de Smalen <sander.desmalen at arm.com>
  Date:   2026-04-30 (Thu, 30 Apr 2026)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
    M llvm/lib/Transforms/Vectorize/VPlan.h
    M llvm/lib/Transforms/Vectorize/VPlanPatternMatch.h
    M llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp
    M llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
    M llvm/test/Transforms/LoopVectorize/AArch64/partial-reduce-fdot-product.ll

  Log Message:
  -----------
  [LV] Add support for partial reduction chains with fsubs.

The cost-model prevented this from happening, but the LV would
otherwise generate incorrect code (i.e. without the fneg).



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