-
-static void check_out_edges(ir_node *irn, void *env) {
- int i, j, pos;
- int *pError = env;
- int error = *pError;
- int last = is_Block(irn) ? 0 : -1;
-
- /* check forward: every input must have an out edge */
- for (i = get_irn_arity(irn) - 1; i >= last; --i) {
- ir_node *pred = get_irn_n(irn, i);
-
- for (j = get_irn_n_outs(pred) - 1; j >= 0; --j) {
- ir_node *user = get_irn_out_ex(pred, j, &pos);
-
- if (user == irn && pos == i) {
- break;
- }
- }
- if (j < 0) {
- ir_fprintf(stderr, "Missing out edge from %+F input %d to %+F", irn, i, pred);
- ++error;
- }
- }
-
- /* checking backward */
- for (i = get_irn_n_outs(irn) - 1; i >= 0; --i) {
- ir_node *user = get_irn_out_ex(irn, i, &pos);
-
- if (get_irn_n(user, pos) != irn) {
- ir_fprintf(stderr, "Spurious out edge from %+F output %d to %+F", irn, i, user);
- ++error;
- }
- }
- *pError = error;
-}
-
-/* verify outs edges. */
-void verify_outs(ir_graph *irg) {
- int errors = 0;
- irg_walk_graph(irg, NULL, check_out_edges, &errors);
- if (errors > 0)
- panic("Out edges are corrupt");
-}