[all-commits] [llvm/llvm-project] 795e35: Reland "[LoopVectorizer] Add support for partial r...

[Sam Tebbs via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 795e35a653b977bf637d1d049423adc8a63cd20d
      https://github.com/llvm/llvm-project/commit/795e35a653b977bf637d1d049423adc8a63cd20d
  Author: Sam Tebbs <samuel.tebbs at arm.com>
  Date:   2025-01-13 (Mon, 13 Jan 2025)

  Changed paths:
    M llvm/include/llvm/Analysis/TargetTransformInfo.h
    M llvm/include/llvm/Analysis/TargetTransformInfoImpl.h
    M llvm/lib/Analysis/TargetTransformInfo.cpp
    M llvm/lib/Target/AArch64/AArch64TargetTransformInfo.h
    M llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
    M llvm/lib/Transforms/Vectorize/VPRecipeBuilder.h
    M llvm/lib/Transforms/Vectorize/VPlan.h
    M llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp
    M llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp
    M llvm/lib/Transforms/Vectorize/VPlanValue.h
    M llvm/test/Transforms/LoopVectorize/AArch64/fully-unrolled-cost.ll
    A llvm/test/Transforms/LoopVectorize/AArch64/partial-reduce-dot-product-epilogue.ll
    A llvm/test/Transforms/LoopVectorize/AArch64/partial-reduce-dot-product-mixed.ll
    A llvm/test/Transforms/LoopVectorize/AArch64/partial-reduce-dot-product-neon.ll
    A llvm/test/Transforms/LoopVectorize/AArch64/partial-reduce-dot-product.ll
    A llvm/test/Transforms/LoopVectorize/AArch64/partial-reduce-no-dotprod.ll
    A llvm/test/Transforms/LoopVectorize/AArch64/vplan-printing.ll

  Log Message:
  -----------
  Reland "[LoopVectorizer] Add support for partial reductions" with non-phi operand fix. (#121744)

This relands the reverted #120721 with a fix for cases where neither
reduction operand are the reduction phi. Only
63114239cc8d26225a0ef9920baacfc7cc00fc58 and
63114239cc8d26225a0ef9920baacfc7cc00fc58 are new on top of the reverted
PR.

---------

Co-authored-by: Nicholas Guy <nicholas.guy at arm.com>



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