{"ast_node_type":"variable","tokens":[{"end":75,"kind":"keyword","start":0,"text":"let"}]}
                let gt = fx.bcx.ins().icmp(IntCC::SignedGreaterThan, a, b);
            simd_reduce(fx, v, None, ret, &|fx, _ty, a, b| {
                fx.bcx.ins().select(gt, a, b)