#define get_irn_col(co, irn) arch_register_get_index(arch_get_irn_register((co)->aenv, irn))
#define set_irn_col(co, irn, col) arch_set_irn_register((co)->aenv, irn, arch_register_for_index((co)->cls, col))
#define is_curr_reg_class(co, irn) (arch_get_irn_reg_class((co)->aenv, irn, -1) == (co)->cls)
#define get_irn_col(co, irn) arch_register_get_index(arch_get_irn_register((co)->aenv, irn))
#define set_irn_col(co, irn, col) arch_set_irn_register((co)->aenv, irn, arch_register_for_index((co)->cls, col))
#define is_curr_reg_class(co, irn) (arch_get_irn_reg_class((co)->aenv, irn, -1) == (co)->cls)
******************************************************************************/
typedef struct _neighb_t neighb_t;
******************************************************************************/
typedef struct _neighb_t neighb_t;
find.irn = irn;
return set_find(co->nodes, &find, sizeof(find), HASH_PTR(irn));
find.irn = irn;
return set_find(co->nodes, &find, sizeof(find), HASH_PTR(irn));