Function simd_sum

cranelift/interpreter/src/value.rs:897–908

(dv: DataValue, ty: types::Type)

    }

    fn simd_sum(dv: DataValue, ty: types::Type) -> i128 {
        let itr = dv.iter_lanes(ty).unwrap();

        itr.map(|e| {
            if let Some(v) = e.into_int_signed().ok() {
                v
            } else {
                0
            }
        })
        .sum()
    }
}