+
+static void clear_link(ir_node *irn, void *data)
+{
+ set_irn_link(irn, NULL);
+}
+
+static void collect_phis(ir_node *irn, void *data)
+{
+ if(is_Phi(irn)) {
+ ir_node *bl = get_nodes_block(irn);
+ set_irn_link(irn, get_irn_link(bl));
+ set_irn_link(bl, irn);
+ }
+}
+
+void be_clear_links(ir_graph *irg)
+{
+ irg_walk_graph(irg, clear_link, NULL, NULL);
+}
+
+void be_collect_phis(ir_graph *irg)
+{
+ irg_walk_graph(irg, collect_phis, NULL, NULL);
+}