[VPlan] Get types and step from VPWidenPointerInductionRecipe (NFC).

Author: fhahn

llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp

@@ -3194,7 +3194,7 @@ void VPWidenPointerInductionRecipe::execute(VPTransformState &State) {
   // A pointer induction, performed by using a gep
   BasicBlock::iterator InductionLoc = State.Builder.GetInsertPoint();
   Value *ScalarStepValue = State.get(getOperand(1), VPLane(0));
-  Type *PhiType = IndDesc.getStep()->getType();
+  Type *PhiType = State.TypeAnalysis.inferScalarType(getOperand(1));
   Value *RuntimeVF = getRuntimeVF(State.Builder, PhiType, State.VF);
   // Add induction update using an incorrect block temporarily. The phi node
   // will be fixed after VPlan execution. Note that at this point the latch
@@ -3246,7 +3246,8 @@ void VPWidenPointerInductionRecipe::print(raw_ostream &O, const Twine &Indent,
   printAsOperand(O, SlotTracker);
   O << " = WIDEN-POINTER-INDUCTION ";
   getStartValue()->printAsOperand(O, SlotTracker);
-  O << ", " << *IndDesc.getStep();
+  O << ", ";
+  getOperand(1)->printAsOperand(O, SlotTracker);
   if (getNumOperands() == 4) {
     O << ", ";
     getOperand(2)->printAsOperand(O, SlotTracker);

llvm/test/Transforms/LoopVectorize/AArch64/sve-widen-gep.ll

@@ -22,7 +22,7 @@ target triple = "aarch64-unknown-linux-gnu"
 ; CHECK-NEXT:   <x1> vector loop: {
 ; CHECK-NEXT:   vector.body:
 ; CHECK-NEXT:     EMIT vp<[[CAN_IV:%.+]]> = CANONICAL-INDUCTION
-; CHECK-NEXT:     EMIT ir<%ptr.iv.2> = WIDEN-POINTER-INDUCTION ir<%start.2>, 1
+; CHECK-NEXT:     EMIT ir<%ptr.iv.2> = WIDEN-POINTER-INDUCTION ir<%start.2>, ir<1>
 ; CHECK-NEXT:     vp<[[PTR_IDX:%.+]]> = DERIVED-IV ir<0> + vp<[[CAN_IV]]> * ir<8>
 ; CHECK-NEXT:     vp<[[PTR_IDX_STEPS:%.+]]> = SCALAR-STEPS vp<[[PTR_IDX]]>, ir<8>
 ; CHECK-NEXT:     EMIT vp<[[PTR_IV_1:%.+]]> = ptradd ir<%start.1>, vp<[[PTR_IDX_STEPS]]>