Have getSubVTTIndex take a BaseSubobject instead of just a base.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102885 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGVTT.cpp b/lib/CodeGen/CGVTT.cpp
index 68bb655..3118fa2 100644
--- a/lib/CodeGen/CGVTT.cpp
+++ b/lib/CodeGen/CGVTT.cpp
@@ -435,8 +435,8 @@
 }
 
 uint64_t CodeGenVTables::getSubVTTIndex(const CXXRecordDecl *RD, 
-                                        const CXXRecordDecl *Base) {
-  ClassPairTy ClassPair(RD, Base);
+                                        BaseSubobject Base) {
+  ClassPairTy ClassPair(RD, Base.getBase());
 
   SubVTTIndiciesMapTy::iterator I = SubVTTIndicies.find(ClassPair);
   if (I != SubVTTIndicies.end())