[SVE] Remove calls to VectorType::getNumElements from CodeGen

Reviewers: efriedma, fpetrogalli, sdesmalen, RKSimon, arsenm

Reviewed By: RKSimon

Subscribers: wdng, tschuett, hiraditya, rkruppe, psnobl, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D82210

llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp

@@ -1765,7 +1765,7 @@ static std::string scalarConstantToHexString(const Constant *C) {
   } else {
     unsigned NumElements;
     if (auto *VTy = dyn_cast<VectorType>(Ty))
-      NumElements = VTy->getNumElements();
+      NumElements = cast<FixedVectorType>(VTy)->getNumElements();
     else
       NumElements = Ty->getArrayNumElements();
     std::string HexString;