[all-commits] [llvm/llvm-project] ac158a: [LoopVectorizer] Allow partial reductions to be ma...

[James Chesterman via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ac158aa13b5a81552e45e63f534420c38e514484
      https://github.com/llvm/llvm-project/commit/ac158aa13b5a81552e45e63f534420c38e514484
  Author: James Chesterman <James.Chesterman at arm.com>
  Date:   2025-02-07 (Fri, 07 Feb 2025)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
    M llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp
    M llvm/test/Transforms/LoopVectorize/AArch64/partial-reduce-dot-product-epilogue.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/partial-reduce-dot-product-neon.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/partial-reduce-dot-product.ll

  Log Message:
  -----------
  [LoopVectorizer] Allow partial reductions to be made in predicated loops (#124268)

Does a select on the input rather than the output. This way the mask has
the same number of lanes as the other operand in the select instruction.



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