-static void lower_call_node(ir_node *call, const void *walk_env) {
- const arch_env_t *arch_env = walk_env;
- int bitset_idx = 0;
- int set_size = 0;
- arch_isa_t *isa = arch_env_get_isa(arch_env);
- const ir_node *proj_T = NULL;
- ir_node *block = get_nodes_block(call);
- const arch_register_class_t *reg_class;
- int i, j, pn, keep_arity;
- ir_node **in_keep;
- bitset_t *proj_set;
- const ir_edge_t *edge;
- const arch_register_t *reg;
-
- /* Prepare the bitset where we store the projnums which are already in use*/
- for (i = 0; i < arch_isa_get_n_reg_class(isa); i++) {
- reg_class = arch_isa_get_reg_class(isa, i);
- set_size += arch_register_class_n_regs(reg_class);
- }
-
- in_keep = xmalloc(set_size * sizeof(ir_node *));
-
- proj_set = bitset_malloc(set_size);
- bitset_clear_all(proj_set);
-
- /* check if there is a ProjT node and which arguments are used */
- foreach_out_edge(call, edge) {
- if (get_irn_mode(get_edge_src_irn(edge)) == mode_T)
- proj_T = get_edge_src_irn(edge);
- }
-
- /* set all used arguments */
- if (proj_T) {
- foreach_out_edge(proj_T, edge) {
- ir_node *proj = get_edge_src_irn(edge);
-
- assert(is_Proj(proj));
- pn = isa->impl->handle_call_proj(isa, proj, 0);
- bitset_set(proj_set, pn);
- }
- }
- else {
- proj_T = new_r_Proj(current_ir_graph, block, call, mode_T, pn_Call_T_result);
- }
-
- /* Create for each caller save register a proj (keep node argument) */
- /* if this proj is not already present */
- for (i = 0; i < arch_isa_get_n_reg_class(isa); i++) {
+static void assure_different_constraint(ir_node *irn, be_irg_t *birg) {
+ const arch_env_t *arch_env = birg->main_env->arch_env;
+ const arch_register_req_t *req;
+ arch_register_req_t req_temp;
+ ir_node *in[2], *keep;
+ firm_dbg_module_t *mod = firm_dbg_register("firm.be.lower");