+#undef COPYOPT_STAT
+
+#ifdef COPYOPT_STAT
+
+#include "irgraph.h"
+#include "bearch.h"
+#include "bechordal_t.h"
+
+void copystat_init(void);
+void copystat_reset(void);
+void copystat_collect_cls(be_chordal_env_t *chordal_env);
+void copystat_add_max_costs(int costs);
+void copystat_add_inevit_costs(int costs);
+void copystat_add_init_costs(int costs);
+void copystat_add_heur_costs(int costs);
+void copystat_add_ilp_5_sec_costs(int costs);
+void copystat_add_ilp_30_sec_costs(int costs);
+void copystat_add_opt_costs(int costs);
+void copystat_add_heur_time(int time);
+void copystat_add_ilp_time(int time);
+void copystat_add_ilp_vars(int vars);
+void copystat_add_ilp_csts(int csts);
+void copystat_add_ilp_iter(int iters);
+void copystat_dump(ir_graph *irg);
+void copystat_dump_pretty(ir_graph *irg);
+
+/**
+ * Compares different solutions of the same problem
+ */
+void co_compare_solvers(be_chordal_env_t *chordal_env);
+
+#else /* COPYOPT_STAT */