Refactor some bits.

llvm-svn: 78254
diff --git a/clang/lib/CodeGen/CGCXX.cpp b/clang/lib/CodeGen/CGCXX.cpp
index 375c9ac..5324cc6 100644
--- a/clang/lib/CodeGen/CGCXX.cpp
+++ b/clang/lib/CodeGen/CGCXX.cpp
@@ -661,7 +661,7 @@
   }
 
   // Initialize the vtable pointer
-  if (ClassDecl->isPolymorphic() || ClassDecl->getNumVBases()) {
+  if (ClassDecl->isDynamicClass()) {
     if (!LoadOfThis)
       LoadOfThis = LoadCXXThis();
     llvm::Value *VtableField;