{"ast_node_type":"variable","tokens":[{"end":83,"kind":"keyword","start":0,"text":"let"}]}
            let ty_lo = bx.cx().scalar_pair_element_backend_type(layout, 0, false);
        BackendRepr::ScalarPair(scalar1, scalar2) => {
            let ty_hi = bx.cx().scalar_pair_element_backend_type(layout, 1, false);