typedef struct ir_exec_freq ir_exec_freq, *ir_exec_freq_ptr;
typedef struct ir_cdep ir_cdep, *ir_cdep_ptr;
typedef struct sn_entry *seqno_t;
+typedef struct arch_irn_ops_t arch_irn_ops_t;
typedef union ir_initializer_t ir_initializer_t, *ir_initializer_ptr;