+ if (node->op == op_Psi) {
+ assert(get_irn_arity(node) == 3);
+ set_Psi_val(node, 0, ir_true);
+ }
+ else {
+ assert(node->op == op_Mux);
+ node->in[3] = ir_true;
+ }
+}
+
+/* Psi support */
+ir_node *get_Psi_cond (ir_node *node, int pos) {
+ int num_conds = get_Psi_n_conds(node);
+ assert(node->op == op_Psi);
+ assert(pos < num_conds);
+ return node->in[1 + 2 * pos];
+}
+
+void set_Psi_cond (ir_node *node, int pos, ir_node *cond) {
+ int num_conds = get_Psi_n_conds(node);
+ assert(node->op == op_Psi);
+ assert(pos < num_conds);
+ node->in[1 + 2 * pos] = cond;
+}
+
+ir_node *get_Psi_val (ir_node *node, int pos) {
+ int num_vals = get_Psi_n_conds(node);
+ assert(node->op == op_Psi);
+ assert(pos < num_vals);
+ return node->in[1 + 2 * pos + 1];
+}
+
+void set_Psi_val (ir_node *node, int pos, ir_node *val) {
+ int num_vals = get_Psi_n_conds(node);
+ assert(node->op == op_Psi);
+ assert(pos < num_vals);
+ node->in[1 + 2 * pos + 1] = val;
+}
+
+ir_node *get_Psi_default(ir_node *node) {
+ int def_pos = get_irn_arity(node);
+ assert(node->op == op_Psi);
+ return node->in[def_pos];
+}
+
+void set_Psi_default(ir_node *node, ir_node *val) {
+ int def_pos = get_irn_arity(node);
+ assert(node->op == op_Psi);
+ node->in[def_pos] = node;
+}
+
+int (get_Psi_n_conds)(ir_node *node) {
+ return _get_Psi_n_conds(node);