Keep track of, and dump, vtable address points.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95874 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGenCXX/vtable-layout.cpp b/test/CodeGenCXX/vtable-layout.cpp
index 6bfa025..beb82ef 100644
--- a/test/CodeGenCXX/vtable-layout.cpp
+++ b/test/CodeGenCXX/vtable-layout.cpp
@@ -4,6 +4,7 @@
 // CHECK:      Vtable for 'Test1::A' (3 entries).
 // CHECK-NEXT:   0 | offset_to_top (0)
 // CHECK-NEXT:   1 | Test1::A RTTI
+// CHECK-NEXT:       -- (Test1::A, 0) vtable address --
 // CHECK-NEXT:   2 | Test1::A::f
 struct A {
   virtual void f();