{"ast_node_type":"variable","tokens":[{"end":37,"kind":"keyword","start":0,"text":"let"}]}
                            let msb =
                            let lsb = fx.bcx.ins().iconst(types::I64, raw_val as u64 as i64);
                                fx.bcx.ins().iconst(types::I64, (raw_val >> 64) as u64 as i64);