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    { var x = a + b; }
30    return a; // x is dead
31}
32
33function dead2(a, b) {
34    { var x = a | 0; var y = b | 0; }
35    return a; // x and y are both dead
36}
37
38function dead3(a, b) {
39    {
40      var z;
41      if(a == 2) z = a;
42      else z = b;
43    }
44    return a; // z is dead
45}
46
47function dead4(a) {
48    {
49      var z = 3;
50      for (i = 0; i < 3; i++) {
51        z++;
52      }
53    }
54    return a; // z is dead
55}
56
57function dead5(a) {
58    {
59      var z = 3;
60      for (i = 0; i < 3; i++) {
61        z++;
62      }
63      var w = z + a;
64    }
65    return a; // z and w are dead
66}
67
68assertTrue(dead1(33, 32) == 33);
69assertTrue(dead2(33, 32) == 33);
70assertTrue(dead3(33, 32) == 33);
71assertTrue(dead4(33) == 33);
72assertTrue(dead5(33) == 33);
73
74assertTrue(dead1(34, 7) == 34);
75assertTrue(dead2(34, 7) == 34);
76assertTrue(dead3(34, 7) == 34);
77assertTrue(dead4(34) == 34);
78assertTrue(dead5(34) == 34);
79
80assertTrue(dead1(3.4, 0.1) == 3.4);
81assertTrue(dead2(3.4, 0.1) == 3.4);
82assertTrue(dead3(3.4, 0.1) == 3.4);
83assertTrue(dead4(3.4) == 3.4);
84assertTrue(dead5(3.4) == 3.4);
85