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/CGDebugInfo.cpp b/lib/CodeGen/CGDebugInfo.cpp
index c3302e6..c469e9c 100644
--- a/lib/CodeGen/CGDebugInfo.cpp
+++ b/lib/CodeGen/CGDebugInfo.cpp
@@ -649,9 +649,9 @@
       cast<CXXRecordDecl>(BI->getType()->getAs<RecordType>()->getDecl());
     
     if (BI->isVirtual()) {
-      // virtual base offset index is -ve. The code generator emits dwarf
+      // virtual base offset offset is -ve. The code generator emits dwarf
       // expression where it expects +ve number.
-      BaseOffset = 0 - CGM.getVtableInfo().getVirtualBaseOffsetIndex(RD, Base);
+      BaseOffset = 0 - CGM.getVtableInfo().getVirtualBaseOffsetOffset(RD, Base);
       BFlags = llvm::DIType::FlagVirtual;
     } else
       BaseOffset = RL.getBaseClassOffset(Base);