1// Copyright 2014 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
29
30function f(a, b, c) {
31 this.a = a;
32 this.b = b;
33 this.c = c;
34}
35var o3 = new f(1, 2, 3.5);
36var o4 = new f(1, 2.5, 3);
37var o1 = new f(1.5, 2, 3);
38var o2 = new f(1.5, 2, 3);
39function migrate(o) {
40 return o.a;
41}
42// Use migrate to stabilize o1, o2 and o4 in [double, double, smi].
43migrate(o4);
44migrate(o1);
45migrate(o2);
46function store_transition(o) {
47 o.d = 1;
48}
49// Optimize "store_transition" to transition from [double, double, smi] to
50// [double, double, smi, smi]. This adds a dependency on the
51// [double, double, smi] map.
52store_transition(o4);
53store_transition(o1);
54store_transition(o2);
55%OptimizeFunctionOnNextCall(store_transition);
56// Pass in a deprecated object of format [smi, smi, double]. This will migrate
57// the instance, forcing a merge with [double, double, smi], ending up with
58// [double, double, double], which deprecates [double, double, smi] and
59// deoptimizes all dependencies of [double, double, smi], including
60// store_transition itself.
61store_transition(o3);
62