[clang][Interp][NFC] Fix getType() of pointers pointing to vector elems

Author: tbaederr

clang/lib/AST/Interp/Pointer.h

@@ -314,12 +314,14 @@ class Pointer {
   /// Returns the type of the innermost field.
   QualType getType() const {
     if (inPrimitiveArray() && Offset != asBlockPointer().Base) {
-      // Unfortunately, complex types are not array types in clang, but they are
-      // for us.
+      // Unfortunately, complex and vector types are not array types in clang,
+      // but they are for us.
       if (const auto *AT = getFieldDesc()->getType()->getAsArrayTypeUnsafe())
         return AT->getElementType();
       if (const auto *CT = getFieldDesc()->getType()->getAs<ComplexType>())
         return CT->getElementType();
+      if (const auto *CT = getFieldDesc()->getType()->getAs<VectorType>())
+        return CT->getElementType();
     }
     return getFieldDesc()->getType();
   }