[all-commits] [llvm/llvm-project] a861ed: [VPlan] Add initial loop-invariant code motion tra...

[Florian Hahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a861ed411a359b7cb2b58d642e4a7f2fdcf92057
      https://github.com/llvm/llvm-project/commit/a861ed411a359b7cb2b58d642e4a7f2fdcf92057
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2024-09-20 (Fri, 20 Sep 2024)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
    M llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
    M llvm/test/Transforms/LoopVectorize/AArch64/conditional-branches-cost.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/divs-with-scalable-vfs.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/extractvalue-no-scalarization-required.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/force-target-instruction-cost.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/induction-costs.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/pr60831-sve-inv-store-crash.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/reduction-recurrence-costs-sve.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/store-costs-sve.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/sve-cond-inv-loads.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/sve-inv-loads.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/sve-widen-extractvalue.ll
    M llvm/test/Transforms/LoopVectorize/RISCV/dead-ops-cost.ll
    M llvm/test/Transforms/LoopVectorize/RISCV/divrem.ll
    M llvm/test/Transforms/LoopVectorize/RISCV/pr88802.ll
    M llvm/test/Transforms/LoopVectorize/RISCV/truncate-to-minimal-bitwidth-cost.ll
    M llvm/test/Transforms/LoopVectorize/SystemZ/pr47665.ll
    M llvm/test/Transforms/LoopVectorize/X86/cost-model.ll
    M llvm/test/Transforms/LoopVectorize/X86/divs-with-tail-folding.ll
    M llvm/test/Transforms/LoopVectorize/X86/invariant-load-gather.ll
    M llvm/test/Transforms/LoopVectorize/X86/uniform_mem_op.ll
    M llvm/test/Transforms/LoopVectorize/blend-in-header.ll
    M llvm/test/Transforms/LoopVectorize/first-order-recurrence-sink-replicate-region.ll
    M llvm/test/Transforms/LoopVectorize/first-order-recurrence.ll
    M llvm/test/Transforms/LoopVectorize/pr55167-fold-tail-live-out.ll
    M llvm/test/Transforms/LoopVectorize/reduction-inloop-uf4.ll
    M llvm/test/Transforms/LoopVectorize/scalable-trunc-min-bitwidth.ll
    M llvm/test/Transforms/LoopVectorize/select-cmp.ll
    M llvm/test/Transforms/LoopVectorize/skeleton-lcssa-crash.ll
    M llvm/test/Transforms/LoopVectorize/trunc-extended-icmps.ll
    M llvm/test/Transforms/LoopVectorize/trunc-loads-p16.ll
    M llvm/test/Transforms/LoopVectorize/trunc-shifts.ll
    M llvm/test/Transforms/LoopVectorize/vector-geps.ll
    M llvm/test/Transforms/LoopVectorize/version-stride-with-integer-casts.ll
    M llvm/test/Transforms/LoopVectorize/vplan-sink-scalars-and-merge.ll
    M llvm/test/Transforms/LoopVectorize/widen-gep-all-indices-invariant.ll

  Log Message:
  -----------
  [VPlan] Add initial loop-invariant code motion transform. (#107894)

Add initial transform to move out loop-invariant recipes.

This also helps to fix a divergence between legacy and VPlan-based cost
model due to legacy using ScalarEvolution::isLoopInvariant in some
cases.

Fixes https://github.com/llvm/llvm-project/issues/107501.

PR: https://github.com/llvm/llvm-project/pull/107894



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