- be_liveness_end_of_block(lv, env->arch, env->cls, block, live_nodes);
- max_pressure = pset_count(live_nodes);
+ ir_nodeset_init(&live_nodes);
+
+ be_liveness_end_of_block(lv, env->arch, env->cls, block, &live_nodes);
+ max_pressure = ir_nodeset_size(&live_nodes);