for (i = 0; i < n_exc; ++i)
end_preds[main_end_bl_arity + i] = cf_pred[i];
set_irn_in(main_end_bl, n_exc + main_end_bl_arity, end_preds);
for (i = 0; i < n_exc; ++i)
end_preds[main_end_bl_arity + i] = cf_pred[i];
set_irn_in(main_end_bl, n_exc + main_end_bl_arity, end_preds);