1// Copyright 2011 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
10//       disclaimer in the documentation and/or other materials provided
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
18// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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,
23// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
28// Flags: --allow-natives-syntax --expose-gc
29
30function mkCOWArray() {
31  var a = [''];
32  assertEquals('', a[0]);
33  return a;
34}
35
36function mkArray() {
37  var a = [];
38  a[0] = '';
39  return a;
40}
41
42function mkNumberDictionary() {
43  var a = new Array();
44  a[0] = '';
45  a[100000] = '';
46  return a;
47}
48
49function write(a, i) { a[i] = "bazinga!"; }
50
51function test(factories, w) {
52  factories.forEach(function(f) { w(f(), 0); });
53  factories.forEach(function(f) { w(f(), 0); });
54      %OptimizeFunctionOnNextCall(w);
55  factories.forEach(function(f) { w(f(), 0); });
56}
57
58// Monomorphic case.
59for (var i = 0; i < 5; i++) write(mkArray(), 0);
60%OptimizeFunctionOnNextCall(write);
61write(mkCOWArray(), 0);
62var failure = mkCOWArray();
63
64// Cleanup, then polymorphic case.
65%DeoptimizeFunction(write);
66gc();
67test([mkArray, mkNumberDictionary], write);
68test([mkArray, mkNumberDictionary, mkCOWArray], write);
69