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
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: --track-fields --track-double-fields --allow-natives-syntax
29
30function smi_field() {
31  return {"smi":0};
32}
33
34function check_smi_repr(o, d1, d2) {
35  var s = o.smi;
36  var d = d1 - d2;
37  s = s + d;
38  o.smi = s;
39  return o;
40}
41
42var test = smi_field();
43check_smi_repr(smi_field(), 5, 3);
44check_smi_repr(smi_field(), 6, 2);
45%OptimizeFunctionOnNextCall(check_smi_repr);
46var val = check_smi_repr(smi_field(), 8, 1);
47assertTrue(%HaveSameMap(val, test));
48
49function tagged_smi_field() {
50  var o = {"tag":false};
51  o.tag = 10;
52  return o;
53}
54
55function check_smi_repr_from_tagged(o, o2) {
56  var t = o2.tag;
57  o.smi = t;
58  return o;
59}
60
61check_smi_repr_from_tagged(smi_field(), tagged_smi_field());
62check_smi_repr_from_tagged(smi_field(), tagged_smi_field());
63%OptimizeFunctionOnNextCall(check_smi_repr_from_tagged);
64var val = check_smi_repr_from_tagged(smi_field(), tagged_smi_field());
65assertTrue(%HaveSameMap(val, test));
66var overflow = tagged_smi_field();
67overflow.tag = 0x80000000;
68var val = check_smi_repr_from_tagged(smi_field(), overflow);
69