/* compute the Phi classes of the collected Phis */
pc_obj = phi_class_new_from_set(cenv->irg, all_phi_nodes, 0);
all_phi_classes = get_all_phi_classes(pc_obj);
foreach_ir_nodeset(all_phi_nodes, n, iter) {
/* compute the Phi classes of the collected Phis */
pc_obj = phi_class_new_from_set(cenv->irg, all_phi_nodes, 0);
all_phi_classes = get_all_phi_classes(pc_obj);
foreach_ir_nodeset(all_phi_nodes, n, iter) {