{"ast_node_type":"variable","tokens":[{"end":57,"kind":"keyword","start":0,"text":"let"}]}
    let clif_ty = fx.clif_type(lhs.layout().ty).unwrap();
    let signed = type_sign(lhs.layout().ty);
    let (min, max) = type_min_max_value(&mut fx.bcx, clif_ty, signed);