Method relevant

Compiler/program.py:1071–1075

(inst)

        def purge(self, retain_usage=True):
            def relevant(inst):
                req_node = Tape.ReqNode("")
                req_node.num = Tape.ReqNum()
                inst.add_usage(req_node)
                return req_node.num != {}

            if retain_usage:
                self.usage_instructions = list(filter(relevant, self.instructions))