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[VPlan] Convert to concrete recipes before dissolving loop regions. NFCI #141999

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Merged
merged 2 commits into from
Jun 3, 2025
Merged

[VPlan] Convert to concrete recipes before dissolving loop regions. NFCI #141999

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[VPlan] Convert to concrete recipes before dissolving loop regions. NFCI
lukel97 May 29, 2025
bb64d05
Merge branch 'main' into loop-vectorize/convertToConcrete-before-diss…
lukel97 Jun 3, 2025
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4 changes: 2 additions & 2 deletions llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -7289,14 +7289,14 @@ DenseMap<const SCEV *, Value *> LoopVectorizationPlanner::executePlan(
TTI.getRegisterBitWidth(TargetTransformInfo::RGK_FixedWidthVector));
VPlanTransforms::removeDeadRecipes(BestVPlan);

VPlanTransforms::convertToConcreteRecipes(BestVPlan,
*Legal->getWidestInductionType());
// Retrieve and store the middle block before dissolving regions. Regions are
// dissolved after optimizing for VF and UF, which completely removes unneeded
// loop regions first.
VPBasicBlock *MiddleVPBB =
BestVPlan.getVectorLoopRegion() ? BestVPlan.getMiddleBlock() : nullptr;
VPlanTransforms::dissolveLoopRegions(BestVPlan);
VPlanTransforms::convertToConcreteRecipes(BestVPlan,
*Legal->getWidestInductionType());
// Perform the actual loop transformation.
VPTransformState State(&TTI, BestVF, LI, DT, ILV.AC, ILV.Builder, &BestVPlan,
OrigLoop->getParentLoop(),
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