PR8369: make __attribute((regparm(0))) work correctly.  Original patch by
pageexec@freemail.hu, tweaks by me.

llvm-svn: 129206
diff --git a/clang/lib/AST/DumpXML.cpp b/clang/lib/AST/DumpXML.cpp
index 9a34722..93ae1e3 100644
--- a/clang/lib/AST/DumpXML.cpp
+++ b/clang/lib/AST/DumpXML.cpp
@@ -955,7 +955,7 @@
   void visitFunctionTypeAttrs(FunctionType *T) {
     setFlag("noreturn", T->getNoReturnAttr());
     setCallingConv(T->getCallConv());
-    if (T->getRegParmType()) setInteger("regparm", T->getRegParmType());
+    if (T->getHasRegParm()) setInteger("regparm", T->getRegParmType());
   }
   void visitFunctionTypeChildren(FunctionType *T) {
     dispatch(T->getResultType());