Constant filtering and shape of removal passes are updated

nncf/common/graph/operator_metatypes.py

@@ -29,6 +29,7 @@ class OperatorMetatype:
     hw_config_names: List[str] = []
     output_channel_axis: Optional[int] = None
     ignored_input_ports: List[int] = []
+    input_edges_num_expected = None
 
     @classmethod
     def get_all_aliases(cls) -> List[str]:

nncf/common/utils/dot_file_rw.py

@@ -50,6 +50,8 @@ def read_dot_graph(path: pathlib.Path) -> nx.DiGraph:
 def _maybe_escape_colons_in_attrs(data: Dict):
     for attr_name in data:
         attr_val = data[attr_name]
+        if not isinstance(attr_val, str):
+            continue
         if RESERVED_CHAR in attr_val and not (attr_val[0] == '"' or attr_val[-1] == '"'):
             data[attr_name] = '"' + data[attr_name] + '"'  # escaped colons are allowed
 

nncf/onnx/graph/nncf_graph_builder.py

@@ -67,7 +67,7 @@ def __init__(
         self.weight_attrs = weight_attrs if weight_attrs is not None else {}
         self.bias_attrs = bias_attrs if bias_attrs is not None else {}
         self.node_attrs = node_attrs if node_attrs is not None else {}
-        self.layer_attributes = layer_attributes
+        self._layer_attributes = layer_attributes
 
     def has_weight(self) -> bool:
         return bool(self.weight_attrs)
@@ -78,6 +78,9 @@ def has_bias(self) -> bool:
     def has_node_attrs(self) -> bool:
         return bool(self.node_attrs)
 
+    def get_backend_agnostic_attributes(self) -> BaseLayerAttributes:
+        return self._layer_attributes
+
 
 def get_constant_weight_port_ids(metatype: ONNXOpMetatype) -> List[int]:
     """