{"ast_node_type":"other","tokens":[{"end":99,"kind":"keyword","start":0,"text":"//fx.bcx.set_val_label(val2,"}]}
                //fx.bcx.set_val_label(val2, cranelift_codegen::ir::ValueLabel::new(var2.index()));
                let val2 = fx.bcx.use_var(var2);
                CValue::by_val_pair(val1, val2, layout)