typedef struct be_dom_front_info_t be_dom_front_info_t;
-typedef struct be_execution_unit_type_t be_execution_unit_type_t;
-typedef struct be_execution_unit_t be_execution_unit_t;
-typedef struct be_machine_t be_machine_t;
-
typedef struct backend_info_t backend_info_t;
typedef struct sched_info_t sched_info_t;
typedef struct reg_out_info_t reg_out_info_t;
+typedef struct be_ifg_t be_ifg_t;
+typedef struct copy_opt_t copy_opt_t;
typedef struct be_main_env_t be_main_env_t;
typedef struct be_options_t be_options_t;