ir_node *(sched_last)(const ir_node *block);
ir_node *(sched_add_before)(ir_node *before, ir_node *irn);
ir_node *(sched_add_after)(ir_node *before, ir_node *irn);
+void (sched_remove)(ir_node *irn);
#define sched_is_end(irn) is_Block(irn)
#define sched_is_begin(irn) is_Block(irn)