- /*
- * Make final uses of all values live out of the block.
- * They are necessary to build up real intervals.
- */
- be_lv_foreach(lv, block, be_lv_state_end, i) {
- ir_node *irn = be_lv_get_irn(lv, block, i);
- if(has_reg_class(env, irn)) {
- DBG((dbg, LEVEL_3, "\tMaking live: %+F/%d\n", irn, get_irn_idx(irn)));
- bitset_set(live, get_irn_idx(irn));
- border_use(irn, step, 0);
- }
- }
- ++step;
-
- /*
- * Determine the last uses of a value inside the block, since they are
- * relevant for the interval borders.
- */
- sched_foreach_reverse(block, irn) {
- DBG((dbg, LEVEL_1, "\tinsn: %+F, pressure: %d\n", irn, pressure));
- DBG((dbg, LEVEL_2, "\tlive: %B\n", live));
-
- if (get_irn_mode(irn) == mode_T) {
- const ir_edge_t *edge;
-
- foreach_out_edge(irn, edge) {
- ir_node *proj = get_edge_src_irn(edge);
-
- /*
- * If the node defines some value, which can put into a
- * register of the current class, make a border for it.
- */
- if(has_reg_class(env, proj)) {
- int nr = get_irn_idx(proj);
-
- bitset_clear(live, nr);
- border_def(proj, step, 1);
- }
- }
- }
-
- /*
- * If the node defines some value, which can put into a
- * register of the current class, make a border for it.
- */
- if(has_reg_class(env, irn)) {
- int nr = get_irn_idx(irn);
-
- bitset_clear(live, nr);
- border_def(irn, step, 1);
- }
-
- /*
- * If the node is no phi node we can examine the uses.
- */
- if(!is_Phi(irn)) {
- for(i = 0, n = get_irn_arity(irn); i < n; ++i) {
- ir_node *op = get_irn_n(irn, i);
-
- if(has_reg_class(env, op)) {
- int nr = get_irn_idx(op);
- const char *msg = "-";
-
- if(!bitset_is_set(live, nr)) {
- border_use(op, step, 1);
- bitset_set(live, nr);
- msg = "X";
- }
-
- DBG((dbg, LEVEL_4, "\t\t%s pos: %d, use: %+F\n", msg, i, op));
- }
- }
- }
- ++step;
- }
-
- bitset_foreach(live, elm) {
- ir_node *irn = get_idx_irn(env->irg, elm);
- if (be_is_live_in(lv, block, irn))
- border_def(irn, step, 0);