+static be_node_attr_t *retrieve_irn_attr(const ir_node *irn, int *the_pos)
+{
+ int dummy;
+ be_node_attr_t *res = NULL;
+ int *pos = the_pos ? the_pos : &dummy;
+
+ *pos = -1;
+ if(is_Proj(irn)) {
+ ir_node *pred = get_Proj_pred(irn);
+ int p = get_Proj_proj(irn);
+
+ if(is_be_node(pred)) {
+ assert(get_irn_mode(pred) == mode_T);
+ *pos = p;
+ res = get_irn_attr(pred);
+ assert(p >= 0 && p < res->max_reg_data && "illegal proj number");
+ }
+ }
+
+ else if(is_be_node(irn) && get_irn_mode(irn) != mode_T) {
+ be_node_attr_t *a = get_irn_attr(irn);
+ if(a->max_reg_data > 0) {
+ res = a;
+ *pos = 0;
+ }
+ }
+
+ return res;
+}
+
+static be_reg_data_t *retrieve_reg_data(const ir_node *irn)
+{
+ int pos;
+ be_node_attr_t *a = retrieve_irn_attr(irn, &pos);
+ return a ? &a->reg_data[pos] : NULL;
+}
+