#define bitset_irg_obstack_alloc(obst, irg) bitset_obstack_alloc(obst, get_irg_last_idx(irg))
#define bitset_add_irn(bs, irn) bitset_set((bs), get_irn_idx(irn))
#define bitset_remv_irn(bs, irn) bitset_clear((bs), get_irn_idx(irn))
#define bitset_irg_obstack_alloc(obst, irg) bitset_obstack_alloc(obst, get_irg_last_idx(irg))
#define bitset_add_irn(bs, irn) bitset_set((bs), get_irn_idx(irn))
#define bitset_remv_irn(bs, irn) bitset_clear((bs), get_irn_idx(irn))