comment parsing: Properties are considered like methods, and people 
think of them as having return values that may be computed. Don't
warn when using @return in their comment. // rdar://13189938


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176147 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/CommentSema.cpp b/lib/AST/CommentSema.cpp
index fd2b5b1..73e49e7 100644
--- a/lib/AST/CommentSema.cpp
+++ b/lib/AST/CommentSema.cpp
@@ -465,6 +465,9 @@
     }
     return;
   }
+  else if (isObjCPropertyDecl())
+    return;
+  
   Diag(Command->getLocation(),
        diag::warn_doc_returns_not_attached_to_a_function_decl)
     << Command->getCommandName(Traits)
@@ -652,6 +655,14 @@
     inspectThisDecl();
   return ThisDeclInfo->getKind() == DeclInfo::FunctionKind;
 }
+  
+bool Sema::isObjCPropertyDecl() {
+  if (!ThisDeclInfo)
+    return false;
+  if (!ThisDeclInfo->IsFilled)
+    inspectThisDecl();
+  return ThisDeclInfo->CurrentDecl->getKind() == Decl::ObjCProperty;
+}
 
 bool Sema::isTemplateOrSpecialization() {
   if (!ThisDeclInfo)