// Copyright 2017 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

function __f_0() {
  "use asm";
  function __f_1() { }
  return {__f_1: __f_1};
}
__f_0();
__f_0();
