Method push

pulley/src/interp.rs:1050–1057

(&mut self, val: T)

    /// is generated.
    #[must_use]
    fn push<I: Encode, T>(&mut self, val: T) -> ControlFlow<Done> {
        let new_sp = self.state[XReg::sp].get_ptr::<T>().wrapping_sub(1);
        self.set_sp::<I>(new_sp.cast())?;
        unsafe {
            new_sp.write_unaligned(val);
        }
        ControlFlow::Continue(())
    }

    /// `ret = *sp; sp -= size_of::<T>()`
    fn pop<T>(&mut self) -> T {