* @param bs The bitset (may be NULL).
* @return The number of registers to be ignored.
*/
-int be_put_ignore_regs(const be_irg_t *birg, const arch_register_class_t *cls,
+unsigned be_put_ignore_regs(const be_irg_t *birg, const arch_register_class_t *cls,
bitset_t *bs);
#endif /* FIRM_BE_BE_T_H */