be: Use be_foreach_out().

ir/be/amd64/amd64_finish.c

@@ -186,10 +186,8 @@ static ir_node *amd64_turn_back_am(ir_node *node)
  */
 static void assure_should_be_same_requirements(ir_node *const node)
 {
-	unsigned const n_res = arch_get_irn_n_outs(node);
-
 	/* Check all OUT requirements, if there is a should_be_same. */
-	for (unsigned i = 0; i < n_res; ++i) {
+	be_foreach_out(node, i) {
 		arch_register_req_t const *const req
 			= arch_get_irn_register_req_out(node, i);
 		if (!arch_register_req_is(req, should_be_same))

ir/be/amd64/amd64_new_nodes.c

@@ -138,7 +138,7 @@ static void init_amd64_switch_attributes(ir_node *node,
 	attr->table        = table;
 	attr->table_entity = table_entity;
 
-	for (unsigned o = 0, n_outs = arch_get_irn_n_outs(node); o < n_outs; o++) {
+	be_foreach_out(node, o) {
 		arch_set_irn_register_req_out(node, o, arch_no_register_req);
 	}
 }

ir/be/ia32/ia32_fpu.c

@@ -212,7 +212,7 @@ static void collect_fpu_mode_nodes_walker(ir_node *node, void *data)
 		return;
 
 	collect_fpu_mode_nodes_env_t *env = (collect_fpu_mode_nodes_env_t*)data;
-	for (unsigned o = 0, n = arch_get_irn_n_outs(node); o < n; ++o) {
+	be_foreach_out(node, o) {
 		const arch_register_t *reg = arch_get_irn_register_out(node, o);
 		if (reg != &ia32_registers[REG_FPCW])
 			continue;