diff --git a/mlir/include/mlir/Dialect/ControlFlow/IR/ControlFlowOps.td b/mlir/include/mlir/Dialect/ControlFlow/IR/ControlFlowOps.td
--- a/mlir/include/mlir/Dialect/ControlFlow/IR/ControlFlowOps.td
+++ b/mlir/include/mlir/Dialect/ControlFlow/IR/ControlFlowOps.td
@@ -28,6 +28,7 @@
     constructs. These constructs generally represent control flow directly
     on SSA blocks of a control flow graph.
   }];
+  let usePropertiesForAttributes = 1;
 
 }