Actually support DW_TAG_rvalue_reference_type that we were trying
to generate out of the front end.

rdar://11479676

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157094 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/DIBuilder.cpp b/lib/Analysis/DIBuilder.cpp
index d982833..0e7d540 100644
--- a/lib/Analysis/DIBuilder.cpp
+++ b/lib/Analysis/DIBuilder.cpp
@@ -229,12 +229,13 @@
   return DIType(MDNode::get(VMContext, Elts));
 }
 
-/// createReferenceType - Create debugging information entry for a reference.
-DIType DIBuilder::createReferenceType(DIType RTy) {
+/// createReferenceType - Create debugging information entry for a reference
+/// type.
+DIType DIBuilder::createReferenceType(unsigned Tag, DIType RTy) {
   assert(RTy.Verify() && "Unable to create reference type");
   // References are encoded in DIDerivedType format.
   Value *Elts[] = {
-    GetTagConstant(VMContext, dwarf::DW_TAG_reference_type),
+    GetTagConstant(VMContext, Tag),
     NULL, // TheCU,
     NULL, // Name
     NULL, // Filename