vtr_arch: added handler to insert equivalent tiles

Signed-off-by: Alessandro Comodi <[email protected]>

Author: acomodi

libs/libarchfpga/src/physical_types.h

@@ -587,6 +587,9 @@ struct t_type_descriptor /* TODO rename this.  maybe physical type descriptor or
 	t_pb_type *pb_type = nullptr;
 	t_pb_graph_node *pb_graph_head = nullptr;
 
+	int num_equivalent_tiles = 0;
+	t_type_descriptor **equivalent_tiles = nullptr;
+
 	float area = 0;
 
 	/* This info can be determined from class_inf and pin_class but stored for faster access */

libs/libarchfpga/src/read_xml_arch_file.cpp

@@ -125,6 +125,11 @@ static void ProcessTilesTags(pugi::xml_node Node,
 		t_arch& arch,
 		const t_default_fc_spec &arch_def_fc,
 		const pugiutil::loc_data& loc_data);
+static void ProcessTileExtraModes(pugi::xml_node Node,
+		t_type_descriptor *Type,
+		t_type_descriptor **Types,
+		int NumTypes,
+		const pugiutil::loc_data& loc_data);
 static void ProcessComplexBlocks(pugi::xml_node Node,
 		t_type_descriptor ** Types,
 		int NumTypes,
@@ -2692,7 +2697,7 @@ static void ProcessTiles(pugi::xml_node Node,
 		t_type_descriptor ** Types,
 		int *NumTypes,
 		const pugiutil::loc_data& loc_data) {
-	pugi::xml_node CurType, Prev;
+	pugi::xml_node CurType;
 	pugi::xml_node Cur;
 	t_type_descriptor * Type;
 	int i;
@@ -2789,22 +2794,54 @@ static void ProcessTilesTags(pugi::xml_node Node,
         Cur = get_single_child(CurType, "fc", loc_data, OPTIONAL);
         Process_Fc(Cur, Type, arch.Segments, arch_def_fc, loc_data);
 
-        //Load switchblock type and location overrides
+        /* Load switchblock type and location overrides */
         Cur = get_single_child(CurType, "switchblock_locations", loc_data, OPTIONAL);
         ProcessSwitchblockLocations(Cur, Type, arch, loc_data);
 
+		/* Load possible modes (pb_types which are compatible with the current tile) */
+		Cur = get_single_child(CurType, "equivalent_tiles", loc_data, OPTIONAL);
+		if(Cur) {
+			ProcessTileExtraModes(Cur, Type, Types, NumTypes, loc_data);
+		}
+
 		/* Free this node and get its next sibling node */
 		CurType = CurType.next_sibling (CurType.name());
 	}
 }
 
+/* TODO Add documentation */
+static void ProcessTileExtraModes(pugi::xml_node Node,
+		t_type_descriptor *Type,
+		t_type_descriptor **Types,
+		int NumTypes,
+		const pugiutil::loc_data& loc_data) {
+	pugi::xml_node CurType;
+
+	Type->num_equivalent_tiles = count_children(Node, "mode", loc_data);
+	Type->equivalent_tiles = (t_type_descriptor **) vtr::malloc(Type->num_equivalent_tiles * sizeof(t_type_descriptor *));
+	int index = 0;
+	CurType = Node.first_child();
+	while(CurType && index < Type->num_equivalent_tiles) {
+		const char *equivalent_tile_name = get_attribute(CurType, "name", loc_data).value();
+
+		Type->equivalent_tiles[index] = get_correspondent_tile(Types, NumTypes, equivalent_tile_name);
+		if(Type->equivalent_tiles[index] == nullptr) {
+			archfpga_throw(loc_data.filename_c_str(), loc_data.line(CurType),
+					"No tiles found correspondent to equivalent tile name: '%s'.\n", Type->pb_type->name);
+		}
+
+		index++;
+		CurType = CurType.next_sibling (CurType.name());
+	}
+}
+
 static void ProcessComplexBlocks(pugi::xml_node Node,
 		t_type_descriptor ** Types,
 		int NumTypes,
 		t_arch& arch,
 		const bool timing_enabled,
 		const pugiutil::loc_data& loc_data) {
-	pugi::xml_node CurPbType, Prev;
+	pugi::xml_node CurPbType;
 	t_type_descriptor * Type;
 
 	map<string, int> pb_types;