Method concat

cranelift/interpreter/src/value.rs:482–489

(self, other: Self)

    }

    fn concat(self, other: Self) -> ValueResult<Self> {
        match (self, other) {
            (DataValue::I64(lhs), DataValue::I64(rhs)) => Ok(DataValue::I128(
                (((lhs as u64) as u128) | (((rhs as u64) as u128) << 64)) as i128,
            )),
            (lhs, rhs) => unimplemented!("concat: {} -> {}", lhs.ty(), rhs.ty()),
        }
    }

    fn is_negative(&self) -> ValueResult<bool> {
        match self {