Use pointer swizziling to unify in ObjCMessageExpr the receiver and classname "fields".  This saves us a pointer.
Implemented serialization for ObjCMessageExpr.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50528 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/StmtDumper.cpp b/lib/AST/StmtDumper.cpp
index 798ea84..77fbad5 100644
--- a/lib/AST/StmtDumper.cpp
+++ b/lib/AST/StmtDumper.cpp
@@ -428,6 +428,8 @@
 void StmtDumper::VisitObjCMessageExpr(ObjCMessageExpr* Node) {
   DumpExpr(Node);
   fprintf(F, " selector=%s", Node->getSelector().getName().c_str());
+  IdentifierInfo* clsName = Node->getClassName();
+  if (clsName) fprintf(F, " class=%s", clsName->getName());
 }
 
 void StmtDumper::VisitObjCEncodeExpr(ObjCEncodeExpr *Node) {