1. A detector for detecting at least one kind of dependence in address between instructions executed by at least a processor, said detector being adopted to detect a possibility of presence of said at least one kind of dependence, wherein if said at least one kind of dependence is present in fact, then said detector detects a possibility of presence of said at least one kind of dependence, and if said at least one kind of dependence is not present in fact, then said detector is allowed to detect said at least one kind of dependence.