Add ObjCPropertyDecl::isReadOnly.

Respect isReadOnly when generating synthesized method decls.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@55364 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/DeclObjC.cpp b/lib/AST/DeclObjC.cpp
index 2e03802..e74e21d 100644
--- a/lib/AST/DeclObjC.cpp
+++ b/lib/AST/DeclObjC.cpp
@@ -433,6 +433,10 @@
   }
   property->setGetterMethodDecl(GetterDecl);
 
+  // Skip setter if property is read-only.
+  if (property->isReadOnly())
+    return;
+
   // Find the default setter and if one not found, add one.
   ObjCMethodDecl *SetterDecl = getInstanceMethod(property->getSetterName());
   if (!SetterDecl) {