IRGen fix for using property-dot syntax to pass

reference object to a c++ member function.
fixes radar 8409336.

llvm-svn: 113602

clang/lib/CodeGen/CGExprCXX.cpp

@@ -100,7 +100,15 @@ RValue CodeGenFunction::EmitCXXMemberCallExpr(const CXXMemberCallExpr *CE,
     This = EmitScalarExpr(ME->getBase());
   else {
     LValue BaseLV = EmitLValue(ME->getBase());
-    This = BaseLV.getAddress();
+    if (BaseLV.isPropertyRef() || BaseLV.isKVCRef()) {
+      QualType QT = ME->getBase()->getType();
+      RValue RV = 
+        BaseLV.isPropertyRef() ? EmitLoadOfPropertyRefLValue(BaseLV, QT)
+          : EmitLoadOfKVCRefLValue(BaseLV, QT);
+      This = RV.isScalar() ? RV.getScalarVal() : RV.getAggregateAddr();
+    }
+    else
+      This = BaseLV.getAddress();
   }
 
   if (MD->isTrivial()) {

clang/lib/CodeGen/CGObjC.cpp

@@ -555,7 +555,8 @@ RValue CodeGenFunction::EmitObjCPropertyGet(const Expr *Exp,
     else
       Receiver = EmitScalarExpr(KE->getBase());
     return CGM.getObjCRuntime().
-             GenerateMessageSend(*this, Return, Exp->getType(), S,
+             GenerateMessageSend(*this, Return, 
+                                 KE->getGetterMethod()->getResultType(), S,
                                  Receiver,
                                  CallArgList(), KE->getInterfaceDecl());
   }

clang/test/CodeGenObjCXX/property-dot-reference.mm

@@ -0,0 +1,18 @@
+// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fobjc-nonfragile-abi -fexceptions -o - %s | FileCheck %s
+// rdar://8409336
+
+struct TFENode {
+void GetURL() const;
+};
+
+@interface TNodeIconAndNameCell
+- (const TFENode&) node;
+@end
+
+@implementation TNodeIconAndNameCell     
+- (const TFENode&) node {
+// CHECK: call %struct.TFENode* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend
+// CHECK-NEXT: call void @_ZNK7TFENode6GetURLEv(%struct.TFENode* %{{.*}})
+	self.node.GetURL();
+}	// expected-warning {{control reaches end of non-void function}}
+@end