Method jump_relative_backward

crates/vm/src/frame.rs:6895–6898

(&mut self, delta: u32, caches: u32)

    /// targets, and debug builds will catch underflow via Rust's default checks.
    #[inline]
    fn jump_relative_backward(&mut self, delta: u32, caches: u32) {
        let target = self.lasti() + caches - delta;
        self.update_lasti(|i| *i = target);
    }

    #[inline]
    fn pop_jump_if_relative(