Patch for generation of weak write barriers for objc
__weak objects.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59560 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGObjCRuntime.h b/lib/CodeGen/CGObjCRuntime.h
index 37544e4..24288b1 100644
--- a/lib/CodeGen/CGObjCRuntime.h
+++ b/lib/CodeGen/CGObjCRuntime.h
@@ -145,8 +145,10 @@
                              const ObjCAtThrowStmt &S) = 0;
   virtual void EmitSynchronizedStmt(CodeGen::CodeGenFunction &CGF,
                                     const ObjCAtSynchronizedStmt &S) = 0;
-  virtual llvm::Value * EmitObjCWeakCall(CodeGen::CodeGenFunction &CGF,
+  virtual llvm::Value * EmitObjCWeakRead(CodeGen::CodeGenFunction &CGF,
 					 llvm::Value *AddrWeakObj) = 0;
+  virtual void EmitObjCWeakAssign(CodeGen::CodeGenFunction &CGF,
+                                  llvm::Value *src, llvm::Value *dest) = 0;
 };
 
 /// Creates an instance of an Objective-C runtime class.