[create_generic_partitions]: minor modification, removed redundant ou…

…tput value_info entries. (#26)

src/finn/transformation/create_generic_partitions.py

@@ -124,7 +124,7 @@ def apply(self, model):
                         assert (
                             self.partitioning(node) != partition_id
                         ), """cycle-free graph violated: partition depends on itself"""
-                        print(node)
+                        # print(node)
                         predecessors = model.find_direct_predecessors(node)
                         if predecessors is not None:
                             next_to_check.extend(predecessors)
@@ -141,11 +141,25 @@ def apply(self, model):
             for o in p_out_vi:
                 p_model.graph.output.append(o)
 
-            # remove redundant input value_info entries
+            # remove redundant input and output value_info entries
             for i in p_in_vi:
-                if i in p_model.graph.value_info:
+                # the tensor can be both an input and value_info, so we also have to
+                # ensure that the tensor is not a relevant value_info before removing
+                if (
+                    i in p_model.graph.value_info
+                    and p_model.find_producer(i.name) is None
+                ):
                     p_model.graph.value_info.remove(i)
 
+            for o in p_out_vi:
+                # the tensor can both an output and value_info, so we also have to
+                # ensure that the tensor is not a relevant value_info before removing
+                if (
+                    o in p_model.graph.value_info
+                    and p_model.find_consumers(o.name) is None
+                ):
+                    p_model.graph.value_info.remove(o)
+
             # save partition model
             p_model_filename = (
                 self.partition_dir + "/partition_" + str(partition_id) + ".onnx"