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1 // Copyright 2010 the V8 project authors. All rights reserved. | 1 // Copyright 2010 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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113 // Regression test for SMI input of Math.abs on X64, see: | 113 // Regression test for SMI input of Math.abs on X64, see: |
114 // https://codereview.chromium.org/21180004/ | 114 // https://codereview.chromium.org/21180004/ |
115 var a = [-1, -2]; | 115 var a = [-1, -2]; |
116 function foo2() { | 116 function foo2() { |
117 return Math.abs(a[0]); | 117 return Math.abs(a[0]); |
118 } | 118 } |
119 assertEquals(1, foo2()); | 119 assertEquals(1, foo2()); |
120 assertEquals(1, foo2()); | 120 assertEquals(1, foo2()); |
121 %OptimizeFunctionOnNextCall(foo2); | 121 %OptimizeFunctionOnNextCall(foo2); |
122 assertEquals(1, foo2()); | 122 assertEquals(1, foo2()); |
| 123 |
| 124 // Regression test for Integer input of Math.abs on mips64. |
| 125 function absHalf(bits) { |
| 126 var x = 1 << (bits - 1); |
| 127 var half = Math.abs(x); |
| 128 return half; |
| 129 |
| 130 } |
| 131 |
| 132 // Create minimum integer input for abs() using bitwise operations |
| 133 // that should overflow. |
| 134 bits = 32; |
| 135 assertEquals(2147483648, absHalf(bits)); |
| 136 assertEquals(2147483648, absHalf(bits)); |
| 137 %OptimizeFunctionOnNextCall(absHalf); |
| 138 assertEquals(2147483648, absHalf(bits)); |
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