1// Copyright 2013 the V8 project authors. All rights reserved.
2// Redistribution and use in source and binary forms, with or without
3// modification, are permitted provided that the following conditions are
4// met:
5//
6//     * Redistributions of source code must retain the above copyright
7//       notice, this list of conditions and the following disclaimer.
8//     * Redistributions in binary form must reproduce the above
9//       copyright notice, this list of conditions and the following
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11//       with the distribution.
12//     * Neither the name of Google Inc. nor the names of its
13//       contributors may be used to endorse or promote products derived
14//       from this software without specific prior written permission.
15//
16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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19// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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26// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
28// Flags: --allow-natives-syntax
29
30var p = { f: function () { return "p"; } };
31var o = Object.create(p);
32o.x = true;
33delete o.x;  // slow case object
34
35var u = { x: 0, f: function () { return "u"; } };  // object with some other map
36
37function F(x) {
38  return x.f();
39}
40
41// First make CALL IC in F go MEGAMORPHIC and ensure that we put the stub
42// that calls p.f (guarded by a negative dictionary lookup on the reciever)
43// into the stub cache
44assertEquals("p", F(o));
45assertEquals("p", F(o));
46assertEquals("u", F(u));
47assertEquals("p", F(o));
48assertEquals("u", F(u));
49
50// Optimize F. We will inline p.f into F guarded by map checked against
51// receiver which does not work for slow case objects.
52%OptimizeFunctionOnNextCall(F);
53assertEquals("p", F(o));
54
55// Add f to o. o's map will *not* change.
56o.f = function () { return "o"; };
57assertEquals("o", F(o));
58