+extern asm_constraint_flags_t asm_constraint_flags[256];
+
+void be_init_default_asm_constraint_flags(void);
+
+void be_put_allocatable_regs(const ir_graph *irg,
+ const arch_register_class_t *cls, bitset_t *bs);
+
+void be_set_allocatable_regs(const ir_graph *irg,
+ const arch_register_class_t *cls,
+ unsigned *raw_bitset);
+
+unsigned be_get_n_allocatable_regs(const ir_graph *irg,
+ const arch_register_class_t *cls);
+
+/**
+ * Initialize the backend. Must be run first in init_firm();
+ */
+void firm_be_init(void);
+void firm_be_finish(void);
+
+extern int be_timing;
+
+typedef enum {
+ T_FIRST,
+ T_ABI = T_FIRST,
+ T_CODEGEN,
+ T_RA_PREPARATION,
+ T_SCHED,
+ T_CONSTR,
+ T_FINISH,
+ T_EMIT,
+ T_VERIFY,
+ T_OTHER,
+ T_HEIGHTS,
+ T_LIVE,
+ T_EXECFREQ,
+ T_SSA_CONSTR,
+ T_RA_EPILOG,
+ T_RA_CONSTR,
+ T_RA_SPILL,
+ T_RA_SPILL_APPLY,
+ T_RA_COLOR,
+ T_RA_IFG,
+ T_RA_COPYMIN,
+ T_RA_SSA,
+ T_RA_OTHER,
+ T_LAST = T_RA_OTHER
+} be_timer_id_t;
+ENUM_COUNTABLE(be_timer_id_t)
+extern ir_timer_t *be_timers[T_LAST+1];
+
+static inline void be_timer_push(be_timer_id_t id)
+{
+ assert(id <= T_LAST);
+ if (!be_timing)
+ return;
+ ir_timer_push(be_timers[id]);
+}
+
+static inline void be_timer_pop(be_timer_id_t id)
+{
+ assert(id <= T_LAST);
+ if (!be_timing)
+ return;
+ ir_timer_pop(be_timers[id]);
+}
+