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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 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 |
11 // with the distribution. | 11 // with the distribution. |
12 // * Neither the name of Google Inc. nor the names of its | 12 // * Neither the name of Google Inc. nor the names of its |
13 // contributors may be used to endorse or promote products derived | 13 // contributors may be used to endorse or promote products derived |
14 // from this software without specific prior written permission. | 14 // from this software without specific prior written permission. |
15 // | 15 // |
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 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. | 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | 27 |
28 // Flags: --allow-natives-syntax | 28 // Flags: --allow-natives-syntax |
29 | 29 |
30 var A = { | 30 function ToDictionaryMode(x) { |
31 foo: function() { assertUnreachable(); } | 31 %OptimizeObjectForAddingMultipleProperties(x, 100); |
32 } | 32 } |
33 | 33 |
34 var B = { | 34 var A, B, C; |
35 b: 2, | |
36 foo: function() { return 1; } | |
37 } | |
38 B.__proto__ = A; | |
39 | 35 |
40 var C = {}; | 36 // The initial bug report was about calling a know function... |
41 C.__proto__ = B; | 37 A = {}; |
| 38 Object.defineProperty(A, "foo", { value: function() { assertUnreachable(); }}); |
42 | 39 |
43 function bar(x) { | 40 B = Object.create(A); |
44 return x.foo(); | 41 Object.defineProperty(B, "foo", { value: function() { return 111; }}); |
45 } | |
46 | 42 |
47 for (var i = 0; i < 3; i++) { | 43 C = Object.create(B); |
48 assertEquals(1, bar(C)); | 44 |
49 } | 45 function bar(x) { return x.foo(); } |
50 %OptimizeObjectForAddingMultipleProperties(B, 100); // Force dictionary mode. | 46 |
| 47 assertEquals(111, bar(C)); |
| 48 assertEquals(111, bar(C)); |
| 49 ToDictionaryMode(B); |
51 %OptimizeFunctionOnNextCall(bar); | 50 %OptimizeFunctionOnNextCall(bar); |
52 assertEquals(1, bar(C)); | 51 assertEquals(111, bar(C)); |
| 52 |
| 53 // Although this was not in the initial bug report: The same for getters... |
| 54 A = {}; |
| 55 Object.defineProperty(A, "baz", { get: function() { assertUnreachable(); }}); |
| 56 |
| 57 B = Object.create(A); |
| 58 Object.defineProperty(B, "baz", { get: function() { return 111; }}); |
| 59 |
| 60 C = Object.create(B); |
| 61 |
| 62 function boo(x) { return x.baz; } |
| 63 |
| 64 assertEquals(111, boo(C)); |
| 65 assertEquals(111, boo(C)); |
| 66 ToDictionaryMode(B); |
| 67 %OptimizeFunctionOnNextCall(boo); |
| 68 assertEquals(111, boo(C)); |
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