1// Copyright 2008 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
28function dead1(a, b) {
29    a * b;
30    a << b;
31    a >> b;
32    a >>> b;
33    a | b;
34    a & b;
35    a ^ b;
36    return a;
37}
38
39function dead2(a, b) {
40    (a | 0) * b;
41    (a | 0) << b;
42    (a | 0) >> b;
43    (a | 0) >>> b;
44    (a | 0) | b;
45    (a | 0) & b;
46    (a | 0) ^ b;
47    return a;
48}
49
50function dead3(a, b) {
51    a == 2 ? (a * b) : (b * a); // dead
52    return a;
53}
54
55function dead4(a) {
56    var z = 3;
57    for (i = 0; i < 3; i++) {
58        z * 3; // dead
59    }
60    return a;
61}
62
63function dead5(a) {
64    var z = 3;
65    for (i = 0; i < 3; i++) {
66        z * 3; // dead
67        z++;
68    }
69    var w = z * a;
70    return a; // w is dead
71}
72
73assertTrue(dead1(33, 32) == 33);
74assertTrue(dead2(33, 32) == 33);
75assertTrue(dead3(33, 32) == 33);
76assertTrue(dead4(33) == 33);
77assertTrue(dead5(33) == 33);
78
79assertTrue(dead1(34, 7) == 34);
80assertTrue(dead2(34, 7) == 34);
81assertTrue(dead3(34, 7) == 34);
82assertTrue(dead4(34) == 34);
83assertTrue(dead5(34) == 34);
84
85assertTrue(dead1(3.4, 0.1) == 3.4);
86assertTrue(dead2(3.4, 0.1) == 3.4);
87assertTrue(dead3(3.4, 0.1) == 3.4);
88assertTrue(dead4(3.4) == 3.4);
89assertTrue(dead5(3.4) == 3.4);
90