[llvm] [VPlan] Explicitly handle scalar pointer inductions. (PR #83068)

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``````````bash
git-clang-format --diff e9cdd165d7bce695d13f10df3480f9f66fd28b21 133776f783c3d2ed1ea831c19518f9c5aa12f36c -- 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/VPlanRecipes.cpp llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Transforms/Vectorize/VPlan.h b/llvm/lib/Transforms/Vectorize/VPlan.h
index bdd8233760..13dffe73a8 100644
--- a/llvm/lib/Transforms/Vectorize/VPlan.h
+++ b/llvm/lib/Transforms/Vectorize/VPlan.h
@@ -2492,7 +2492,6 @@ class VPDerivedIVRecipe : public VPSingleDefRecipe {
   /// for floating point inductions.
   const FPMathOperator *FPBinOp;
 
-
 public:
   VPDerivedIVRecipe(const InductionDescriptor &IndDesc, VPValue *Start,
                     VPCanonicalIVPHIRecipe *CanonicalIV, VPValue *Step)
diff --git a/llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp b/llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp
index 6b767c163c..db5298bdf8 100644
--- a/llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp
+++ b/llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp
@@ -275,8 +275,7 @@ VPInstruction::VPInstruction(unsigned Opcode,
 }
 
 bool VPInstruction::generatesScalars() const {
-  return
-         Opcode == VPInstruction::PtrAdd;
+  return Opcode == VPInstruction::PtrAdd;
 }
 
 Value *VPInstruction::generatePerLane(VPTransformState &State,
diff --git a/llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp b/llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
index a497384d63..3729b24c33 100644
--- a/llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
+++ b/llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
@@ -571,9 +571,9 @@ static void optimizeInductions(VPlan &Plan, ScalarEvolution &SE) {
           ConstantInt::get(ID.getStep()->getType(), 0));
       VPValue *StepV = PtrIV->getOperand(1);
       VPRecipeBase *Steps =
-          createScalarIVSteps(Plan, InductionDescriptor::IK_IntInduction, Instruction::Add, nullptr, SE,
-                              nullptr, StartV, StepV,
-                              InsertPt)
+          createScalarIVSteps(Plan, InductionDescriptor::IK_IntInduction,
+                              Instruction::Add, nullptr, SE, nullptr, StartV,
+                              StepV, InsertPt)
               ->getDefiningRecipe();
 
       auto *Recipe =
@@ -596,9 +596,10 @@ static void optimizeInductions(VPlan &Plan, ScalarEvolution &SE) {
 
     const InductionDescriptor &ID = WideIV->getInductionDescriptor();
     VPValue *Steps = createScalarIVSteps(
-        Plan, ID.getKind(), ID.getInductionOpcode(), dyn_cast_or_null<FPMathOperator>(ID.getInductionBinOp()), SE, WideIV->getTruncInst(), WideIV->getStartValue(),
-        WideIV->getStepValue(), InsertPt
-        );
+        Plan, ID.getKind(), ID.getInductionOpcode(),
+        dyn_cast_or_null<FPMathOperator>(ID.getInductionBinOp()), SE,
+        WideIV->getTruncInst(), WideIV->getStartValue(), WideIV->getStepValue(),
+        InsertPt);
 
     // Update scalar users of IV to use Step instead.
     if (!HasOnlyVectorVFs)

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https://github.com/llvm/llvm-project/pull/83068