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27
28// Flags: --allow-natives-syntax
29// Test some dead code elimination scenarios
30
31function dead1(x, y) {
32    var a = x | 0, b = y | 0;
33    a * b;
34    a << b;
35    a >> b;
36    a >>> b;
37    a | b;
38    a & b;
39    a ^ b;
40    return x;
41}
42
43function dead2(x, y) {
44    var a = x | 0, b = y | 0;
45    (a | 0) * b;
46    (a | 0) << b;
47    (a | 0) >> b;
48    (a | 0) >>> b;
49    (a | 0) | b;
50    (a | 0) & b;
51    (a | 0) ^ b;
52    return x;
53}
54
55function dead3(a, b) {
56    a == 2 ? (a * b) : (b * a); // dead
57    return a;
58}
59
60assertTrue(dead1(33, 32) == 33);
61assertTrue(dead1(33, 32) == 33);
62%OptimizeFunctionOnNextCall(dead1);
63assertTrue(dead1(33, 32) == 33);
64
65assertTrue(dead2(34, 11) == 34);
66assertTrue(dead2(34, 11) == 34);
67%OptimizeFunctionOnNextCall(dead2);
68assertTrue(dead2(34, 11) == 34);
69
70assertTrue(dead3(35, 12) == 35);
71assertTrue(dead3(35, 12) == 35);
72%OptimizeFunctionOnNextCall(dead3);
73assertTrue(dead3(35, 12) == 35);
74