Clean up usages of asserting vector getters in Type

Summary:
Remove usages of asserting vector getters in Type in preparation for the
VectorType refactor. The existence of these functions complicates the
refactor while adding little value.

Reviewers: rriddle, sdesmalen, efriedma

Reviewed By: sdesmalen

Subscribers: hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D77260

Author: christetreault-llvm

llvm/lib/Transforms/Utils/LoopUtils.cpp

@@ -880,7 +880,7 @@ llvm::getOrderedReduction(IRBuilderBase &Builder, Value *Acc, Value *Src,
                           unsigned Op,
                           RecurrenceDescriptor::MinMaxRecurrenceKind MinMaxKind,
                           ArrayRef<Value *> RedOps) {
-  unsigned VF = Src->getType()->getVectorNumElements();
+  unsigned VF = cast<VectorType>(Src->getType())->getNumElements();
 
   // Extract and apply reduction ops in ascending order:
   // e.g. ((((Acc + Scl[0]) + Scl[1]) + Scl[2]) + ) ... + Scl[VF-1]
@@ -910,7 +910,7 @@ Value *
 llvm::getShuffleReduction(IRBuilderBase &Builder, Value *Src, unsigned Op,
                           RecurrenceDescriptor::MinMaxRecurrenceKind MinMaxKind,
                           ArrayRef<Value *> RedOps) {
-  unsigned VF = Src->getType()->getVectorNumElements();
+  unsigned VF = cast<VectorType>(Src->getType())->getNumElements();
   // VF is a power of 2 so we can emit the reduction using log2(VF) shuffles
   // and vector ops, reducing the set of values being computed by half each
   // round.
@@ -958,7 +958,7 @@ Value *llvm::createSimpleTargetReduction(
     IRBuilderBase &Builder, const TargetTransformInfo *TTI, unsigned Opcode,
     Value *Src, TargetTransformInfo::ReductionFlags Flags,
     ArrayRef<Value *> RedOps) {
-  assert(isa<VectorType>(Src->getType()) && "Type must be a vector");
+  auto *SrcVTy = cast<VectorType>(Src->getType());
 
   std::function<Value *()> BuildFunc;
   using RD = RecurrenceDescriptor;
@@ -983,13 +983,13 @@ Value *llvm::createSimpleTargetReduction(
   case Instruction::FAdd:
     BuildFunc = [&]() {
       auto Rdx = Builder.CreateFAddReduce(
-          Constant::getNullValue(Src->getType()->getVectorElementType()), Src);
+          Constant::getNullValue(SrcVTy->getElementType()), Src);
       return Rdx;
     };
     break;
   case Instruction::FMul:
     BuildFunc = [&]() {
-      Type *Ty = Src->getType()->getVectorElementType();
+      Type *Ty = SrcVTy->getElementType();
       auto Rdx = Builder.CreateFMulReduce(ConstantFP::get(Ty, 1.0), Src);
       return Rdx;
     };