extern void flow_loop_dump (const struct loop *, FILE *,
void (*)(const struct loop *, FILE *, int), int);
extern void flow_loop_free (struct loop *);
+int flow_loop_nodes_find (basic_block, struct loop *);
+void fix_loop_structure (struct loops *, bitmap changed_bbs);
void mark_irreducible_loops (struct loops *);
void mark_single_exit_loops (struct loops *);
extern void create_loop_notes (void);