New AST node to access "implicit" setter/getter using property dor syntax.

Issuing diagnostics when assigning to read-only properties.
This is work in progress.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59874 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 13 insertions, 0 deletions

diff --git a/lib/CodeGen/CGExprAgg.cpp b/lib/CodeGen/CGExprAgg.cpp
index 28f93c00f1..66f3feb8cc 100644
--- a/lib/CodeGen/CGExprAgg.cpp
+++ b/lib/CodeGen/CGExprAgg.cpp
@@ -87,6 +87,7 @@ public:
     EmitAggLoadOfLValue(E);
   }
   void VisitObjCPropertyRefExpr(ObjCPropertyRefExpr *E);
+  void VisitObjCKVCRefExpr(ObjCKVCRefExpr *E);
   
   void VisitConditionalOperator(const ConditionalOperator *CO);
   void VisitInitListExpr(InitListExpr *E);
@@ -170,6 +171,18 @@ void AggExprEmitter::VisitObjCPropertyRefExpr(ObjCPropertyRefExpr *E) {
   CGF.EmitAggregateCopy(DestPtr, RV.getAggregateAddr(), E->getType());
 }
 
+void AggExprEmitter::VisitObjCKVCRefExpr(ObjCKVCRefExpr *E) {
+  RValue RV = CGF.EmitObjCPropertyGet(E);
+  assert(RV.isAggregate() && "Return value must be aggregate value!");
+  
+  // If the result is ignored, don't copy from the value.
+  if (DestPtr == 0)
+    // FIXME: If the source is volatile, we must read from it.
+    return;
+  
+  CGF.EmitAggregateCopy(DestPtr, RV.getAggregateAddr(), E->getType());
+}
+
 void AggExprEmitter::VisitOverloadExpr(const OverloadExpr *E) {
   RValue RV = CGF.EmitCallExpr(E->getFn(), E->arg_begin(),
                                E->arg_end(CGF.getContext()));