{"ast_node_type":"variable","tokens":[{"end":72,"kind":"keyword","start":0,"text":"let"}]}
                let value = a.value_lane_dyn(fx, index).load_scalar(fx);
                let index = fx.bcx.ins().uextend(fx.pointer_type, index);
                ret.place_typed_lane(fx, fx.tcx.types.u32, j).to_ptr().store(