clean before rewritting datapath extraction
add a new command named set_port_type to set the type of a SDFG port
add a new command named set_port_type to set the type of a SDFG port
fix an error of fake loops and the new extract_datapath function pass compilation
ready version before trying the new datapath extraction
seems find out the bugs in the new datapath extraction algorithm but loops are found in remove_useless_nodes
need to trim all control edges
begin write the paper about datapath extraction
Merge branch 'datapath' into dev