[all-commits] [llvm/llvm-project] 4ab4d2: [VPlan] Fold canonical IV recipe creation into cre...

[Florian Hahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4ab4d2d9bb4a1d87b36bb4703d3b95138129c051
      https://github.com/llvm/llvm-project/commit/4ab4d2d9bb4a1d87b36bb4703d3b95138129c051
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2026-05-26 (Tue, 26 May 2026)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
    M llvm/lib/Transforms/Vectorize/VPlanConstruction.cpp
    M llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
    M llvm/lib/Transforms/Vectorize/VPlanTransforms.h
    M llvm/test/Transforms/LoopVectorize/AArch64/simple_early_exit.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/single-early-exit-interleave.ll
    M llvm/test/Transforms/LoopVectorize/RISCV/early-exit-live-out.ll
    M llvm/test/Transforms/LoopVectorize/RISCV/sink-to-early-exit.ll
    M llvm/test/Transforms/LoopVectorize/VPlan/uncountable-early-exit-vplan.ll
    M llvm/test/Transforms/LoopVectorize/VPlan/vplan-print-after-all.ll
    M llvm/test/Transforms/LoopVectorize/early-exit-calls.ll
    M llvm/test/Transforms/LoopVectorize/early-exit-load-live-out.ll
    M llvm/test/Transforms/LoopVectorize/early-exit-unary-ops.ll
    M llvm/test/Transforms/LoopVectorize/multi_early_exit.ll
    M llvm/test/Transforms/LoopVectorize/multiple-early-exits.ll
    M llvm/test/Transforms/LoopVectorize/predicated-early-exits-interleave.ll
    M llvm/test/Transforms/LoopVectorize/predicated-multiple-exits.ll
    M llvm/test/Transforms/LoopVectorize/predicated-single-exit.ll
    M llvm/test/Transforms/LoopVectorize/single-early-exit-deref-assumptions.ll
    M llvm/test/Transforms/LoopVectorize/single-early-exit-interleave-hint.ll
    M llvm/test/Transforms/LoopVectorize/single-early-exit-interleave-only.ll
    M llvm/test/Transforms/LoopVectorize/single-early-exit-interleave.ll
    M llvm/test/Transforms/LoopVectorize/single_early_exit.ll
    M llvm/test/Transforms/LoopVectorize/single_early_exit_live_outs.ll
    M llvm/test/Transforms/LoopVectorize/sink-to-early-exit.ll
    M llvm/test/Transforms/LoopVectorize/vector-loop-backedge-elimination-early-exit.ll
    M llvm/unittests/Transforms/Vectorize/VPlanTestBase.h
    M llvm/unittests/Transforms/Vectorize/VPlanUncountableExitTest.cpp

  Log Message:
  -----------
  [VPlan] Fold canonical IV recipe creation into createLoopRegion. (#198383)

Remove the separate addCanonicalIVRecipes transform and create the
canonical IV's increment and the latch's exiting branch directly in
createLoopRegion, using the loop region's VPRegionValue for the
canonical IV. The temporary VPPhi placeholder previously inserted in the
header is no longer needed.

PR: https://github.com/llvm/llvm-project/pull/198383



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