Start implementing support for @synchonized with the darwin ObjC API.

Patch by Fariborz!



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59377 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGObjC.cpp b/lib/CodeGen/CGObjC.cpp
index 3ffdb4d..058278c 100644
--- a/lib/CodeGen/CGObjC.cpp
+++ b/lib/CodeGen/CGObjC.cpp
@@ -533,4 +533,10 @@
   CGM.getObjCRuntime().EmitThrowStmt(*this, S);
 }
 
+void CodeGenFunction::EmitObjCAtSynchronizedStmt(
+                                              const ObjCAtSynchronizedStmt &S)
+{
+  CGM.getObjCRuntime().EmitSynchronizedStmt(*this, S);
+}
+
 CGObjCRuntime::~CGObjCRuntime() {}