[all-commits] [llvm/llvm-project] 790df9: [VPlan] Mark VPFirstOrderRecurrencePHI as not read...

[Florian Hahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 790df93298b3ad6c57dafb55fc6d18bddff16c4a
      https://github.com/llvm/llvm-project/commit/790df93298b3ad6c57dafb55fc6d18bddff16c4a
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2025-06-15 (Sun, 15 Jun 2025)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/VPlan.cpp
    M llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp
    M llvm/test/Transforms/LoopVectorize/AArch64/induction-costs.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/loop-vectorization-factors.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/partial-reduce-dot-product.ll
    M llvm/test/Transforms/LoopVectorize/RISCV/blocks-with-dead-instructions.ll
    M llvm/test/Transforms/LoopVectorize/X86/fixed-order-recurrence.ll
    M llvm/test/Transforms/LoopVectorize/X86/induction-costs.ll
    M llvm/test/Transforms/LoopVectorize/X86/pr131359-dead-for-splice.ll
    M llvm/test/Transforms/LoopVectorize/X86/pr72969.ll
    M llvm/test/Transforms/LoopVectorize/first-order-recurrence-interleave-only.ll
    M llvm/test/Transforms/LoopVectorize/first-order-recurrence.ll
    M llvm/test/Transforms/LoopVectorize/interleave-and-scalarize-only.ll
    M llvm/test/Transforms/LoopVectorize/optsize.ll
    M llvm/test/Transforms/LoopVectorize/scalable-first-order-recurrence.ll

  Log Message:
  -----------
  [VPlan] Mark VPFirstOrderRecurrencePHI as not reading/writing memory.

First-order recurrence phis don't have side-effects and don't read or
write memory. Mark them as such.



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