{"ast_node_type":"variable","tokens":[{"end":60,"kind":"keyword","start":0,"text":"let"}]}
    let cb_in_as_int = fx.bcx.ins().uextend(clif_ty, cb_in);
    let clif_ty = fx.clif_type(a.layout().ty).unwrap();
    let cb_in_as_int = CValue::by_val(cb_in_as_int, fx.layout_of(a.layout().ty));