- /* handle input constraints by converting them into output constraints
- * of copies of the former argument
- * irn -> arg becomes irn -> copy -> arg
- */
- for (pos = 0, max = get_irn_arity(irn); pos<max; ++pos) {
- arch_get_register_req(raenv->aenv, &req, irn, pos);
- if (arch_register_req_is(&req, limited)) {
- ir_node *arg = get_irn_n(irn, pos);
- ir_node *cpy = be_new_Copy(req.cls, raenv->irg, get_nodes_block(irn), arg);
+ if(op->has_constraints) {
+ ir_node *cpy = be_new_Copy(op->req.cls, env->irg, bl, op->carrier);
+ sched_add_before(insn->irn, cpy);
+ set_irn_n(insn->irn, op->pos, cpy);
+ be_set_constr_limited(cpy, BE_OUT_POS(0), &op->req);
+ }
+ }
+}