Function jit_insn_pop_stack 

pub unsafe extern "C" fn jit_insn_pop_stack(
    func: jit_function_t,
    num_items: jit_nint,
) -> c_int

Pop num_items items from the function call stack. You normally wouldn’t call this yourself - it is used by CPU back ends to clean up the stack after calling a subroutine. The size of an item is specific to the back end (it could be bytes, words, or some other measurement).