1. A data flow graph processing method for processing a data flow graph necessary to configure the operation of a reconfigurable circuit provided with a plurality of sets of logic circuits with variable functions, comprising: a step of generating at least one data flow graph representing dependency in execution between operations performed in sequence, based on a description of operations to be performed; a first dividing step of dividing the at least one data flow graph thus generated into a plurality of sub-data flow graphs, in accordance with the number of logic circuits in the set in the reconfigurable circuit; and a joining step of joining the plurality of sub-data flow graphs so as to generate a joined data flow graph.