-pset *be_liveness_nodes_live_at(const be_lv_t *lv, const arch_env_t *arch_env, const arch_register_class_t *cls, const ir_node *pos, pset *live);
-
-/**
- * Compute a set of nodes which are live at another node.
- * BEWARE: This is the liveness immediately before the node,
- * so the node itself is not alive but it's operands are.
- * @param arch_env The architecture environment.
- * @param cls The register class to consider.
- * @param pos The node.
- * @param live The set to put them into.
- * @return live.
- */
-pset *be_liveness_nodes_live_at_input(const be_lv_t *lv, const arch_env_t *arch_env, const arch_register_class_t *cls, const ir_node *pos, pset *live);
-
+void be_liveness_nodes_live_before(be_lv_t const *lv, arch_register_class_t const *cls, ir_node const *pos, ir_nodeset_t *live);