[reference_model] Support StatefulOps and the tests for CallOnceOp

Signed-off-by: Jerry Ge <jerry.ge@arm.com>
Change-Id: I03cb878736ccd7e1f5e1f780d7171949a19a9de2

1 files changed, 20 insertions, 0 deletions

diff --git a/reference_model/src/graph_node.h b/reference_model/src/graph_node.h
index 440ca04..e10f132 100644
--- a/reference_model/src/graph_node.h
+++ b/reference_model/src/graph_node.h
@@ -254,6 +254,23 @@ public:
         return inMainBlock;
     }
 
+    int getEvaluated() const
+    {
+        return evaluated;
+    }
+
+    int setEvaluated()
+    {
+        evaluated = true;
+        return 0;
+    }
+
+    int clearEvaluated()
+    {
+        evaluated = false;
+        return 0;
+    }
+
     // Helper functions.
     int idiv_check(int input1, int input2, int& result);
     int idiv_floor(int input1, int input2);
@@ -318,6 +335,9 @@ protected:
     // next-node list.
     int onNextNodeList;
 
+    // Flag indicating that this node has been evaluated before
+    int evaluated;
+
     // Required input/output tensor counts for node validation
     // -1 means any number is allowed
     int requiredInputCount;