[llvm] [VPlan] Make canonical IV part of the region (PR #156262)

via llvm-commits llvm-commits at lists.llvm.org
Sun Aug 31 13:11:19 PDT 2025


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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp,h -- llvm/lib/Transforms/Vectorize/LoopVectorize.cpp llvm/lib/Transforms/Vectorize/VPlan.cpp llvm/lib/Transforms/Vectorize/VPlan.h llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp llvm/lib/Transforms/Vectorize/VPlanConstruction.cpp llvm/lib/Transforms/Vectorize/VPlanPatternMatch.h llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp llvm/lib/Transforms/Vectorize/VPlanUnroll.cpp llvm/lib/Transforms/Vectorize/VPlanUtils.cpp llvm/lib/Transforms/Vectorize/VPlanValue.h llvm/lib/Transforms/Vectorize/VPlanVerifier.cpp llvm/unittests/Transforms/Vectorize/VPlanHCFGTest.cpp llvm/unittests/Transforms/Vectorize/VPlanPatternMatchTest.cpp llvm/unittests/Transforms/Vectorize/VPlanVerifierTest.cpp
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``````````diff
diff --git a/llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp b/llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
index abc28f2df..fc2cde63d 100644
--- a/llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
+++ b/llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
@@ -3798,11 +3798,11 @@ void VPlanTransforms::narrowInterleaveGroups(VPlan &Plan, ElementCount VF,
       VectorLoop->getExitingBasicBlock()->getTerminator()->getOperand(0));
   VPBuilder PHBuilder(Plan.getVectorPreheader());
 
-  VPValue *UF = Plan.getOrAddLiveIn(
-      ConstantInt::get(CanIVTy, 1 * Plan.getUF()));
+  VPValue *UF =
+      Plan.getOrAddLiveIn(ConstantInt::get(CanIVTy, 1 * Plan.getUF()));
   if (VF.isScalable()) {
-    VPValue *VScale = PHBuilder.createElementCount(
-        CanIVTy, ElementCount::getScalable(1));
+    VPValue *VScale =
+        PHBuilder.createElementCount(CanIVTy, ElementCount::getScalable(1));
     VPValue *VScaleUF = PHBuilder.createNaryOp(Instruction::Mul, {VScale, UF});
     Inc->setOperand(1, VScaleUF);
     Plan.getVF().replaceAllUsesWith(VScale);

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https://github.com/llvm/llvm-project/pull/156262


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