Rename getVirtualBaseOffsetIndex to getVirtualBaseOffsetOffset to reflect what it actually does.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98248 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGClass.cpp b/lib/CodeGen/CGClass.cpp
index 99c6dfd..525e858 100644
--- a/lib/CodeGen/CGClass.cpp
+++ b/lib/CodeGen/CGClass.cpp
@@ -98,7 +98,7 @@
   }
   if (VBase)
     VirtualOffset = 
-      getVtableInfo().getVirtualBaseOffsetIndex(ClassDecl, BaseClassDecl);
+      getVtableInfo().getVirtualBaseOffsetOffset(ClassDecl, BaseClassDecl);
   
   uint64_t Offset = 
     ComputeNonVirtualBaseClassOffset(getContext(), Paths.front(), Start);
@@ -1540,11 +1540,11 @@
                                                  Int8PtrTy->getPointerTo());
   VTablePtr = Builder.CreateLoad(VTablePtr, "vtable");
 
-  int64_t VBaseOffsetIndex = 
-    CGM.getVtableInfo().getVirtualBaseOffsetIndex(ClassDecl, BaseClassDecl);
+  int64_t VBaseOffsetOffset = 
+    CGM.getVtableInfo().getVirtualBaseOffsetOffset(ClassDecl, BaseClassDecl);
   
   llvm::Value *VBaseOffsetPtr = 
-    Builder.CreateConstGEP1_64(VTablePtr, VBaseOffsetIndex, "vbase.offset.ptr");
+    Builder.CreateConstGEP1_64(VTablePtr, VBaseOffsetOffset, "vbase.offset.ptr");
   const llvm::Type *PtrDiffTy = 
     ConvertType(getContext().getPointerDiffType());