+/** Add a son loop to a father loop. */
+void add_loop_son(ir_loop *loop, ir_loop *son);
+
+/** Add a node to a loop. */
+void add_loop_node(ir_loop *loop, ir_node *n);
+
+/** Sets the loop a node belonging to. */
+void set_irn_loop(ir_node *n, ir_loop *loop);
+
+/* -------- INLINE functions -------- */
+
+static INLINE int
+_is_ir_loop(const void *thing) {
+ return (get_kind(thing) == k_ir_loop);
+}
+
+static INLINE void
+_set_irg_loop(ir_graph *irg, ir_loop *loop) {
+ assert(irg);
+ irg->loop = loop;
+}
+
+static INLINE ir_loop *
+_get_irg_loop(ir_graph *irg) {
+ assert(irg);
+ return irg->loop;
+}
+
+#define is_ir_loop(thing) _is_ir_loop(thing)
+#define set_irg_loop(irg, loop) _set_irg_loop(irg, loop)
+#define get_irg_loop(irg) _get_irg_loop(irg)