+ n = pset_count(live);
+
+ if(n == 0) {
+ del_pset(live);
+ return NULL;
+ }
+
+ nodes = xmalloc(n * sizeof(nodes[0]));
+
+ DBG((dbg, LEVEL_1, "live:\n"));
+ for(irn = pset_first(live), i = 0; irn; irn = pset_next(live), i++) {
+ DBG((dbg, LEVEL_1, "\t%+F\n", irn));
+ nodes[i] = irn;
+ }
+ del_pset(live);
+
+ perm = be_new_Perm(cls, irg, bl, n, nodes);
+ sched_add_after(pos, perm);
+ free(nodes);
+
+ curr = perm;
+ for(i = 0; i < n; ++i) {
+ ir_node *copies[2];
+ ir_node *perm_op = get_irn_n(perm, i);
+ const arch_register_t *reg = arch_get_irn_register(arch_env, perm_op);
+
+ ir_mode *mode = get_irn_mode(perm_op);
+ ir_node *proj = new_r_Proj(irg, bl, perm, mode, i);
+ arch_set_irn_register(arch_env, proj, reg);
+
+ sched_add_after(curr, proj);
+ curr = proj;
+
+ copies[0] = perm_op;
+ copies[1] = proj;
+ be_ssa_constr(dom_front, 2, copies);
+ }
+ return perm;