Method specialization_run_init_cleanup_shim

crates/vm/src/frame.rs:1342–1370

(
        &self,
        new_obj: PyObjectRef,
        init_func: &Py<PyFunction>,
        pos_args: Vec<PyObjectRef>,
        vm: &VirtualMachine,
    )

    }

    fn specialization_run_init_cleanup_shim(
        &self,
        new_obj: PyObjectRef,
        init_func: &Py<PyFunction>,
        pos_args: Vec<PyObjectRef>,
        vm: &VirtualMachine,
    ) -> PyResult<PyObjectRef> {
        let shim = self.specialization_new_init_cleanup_frame(vm);
        let shim_result = vm.with_frame_untraced(shim.clone(), |shim| {
            shim.with_exec(vm, |mut exec| exec.push_value(new_obj.clone()));

            let mut all_args = Vec::with_capacity(pos_args.len() + 1);
            all_args.push(new_obj.clone());
            all_args.extend(pos_args);

            let init_frame = init_func.prepare_exact_args_frame(all_args, vm);
            let init_result = vm.run_frame(init_frame.clone());
            release_datastack_frame(&init_frame, vm);
            let init_result = init_result?;

            shim.with_exec(vm, |mut exec| exec.push_value(init_result));
            match shim.run(vm)? {
                ExecutionResult::Return(value) => Ok(value),
                ExecutionResult::Yield(_) => unreachable!("_Py_InitCleanup shim cannot yield"),
            }
        });
        release_datastack_frame(&shim, vm);
        shim_result
    }

    #[inline(always)]
    fn update_lasti(&mut self, f: impl FnOnce(&mut u32)) {