} *ifsese;
extern void if_region_set_false_region (ifsese, sese);
-extern ifsese create_if_region_on_edge (edge, tree);
extern ifsese move_sese_in_condition (sese);
extern edge get_true_edge_from_guard_bb (basic_block);
extern edge get_false_edge_from_guard_bb (basic_block);