Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1 | // Copyright 2012 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 | |
| 28 | // Flags: --allow-natives-syntax |
| 29 | |
| 30 | function ToDictionaryMode(x) { |
| 31 | %OptimizeObjectForAddingMultipleProperties(x, 100); |
| 32 | } |
| 33 | |
| 34 | var A, B, C; |
| 35 | |
| 36 | // The initial bug report was about calling a know function... |
| 37 | A = {}; |
| 38 | Object.defineProperty(A, "foo", { value: function() { assertUnreachable(); }}); |
| 39 | |
| 40 | B = Object.create(A); |
| 41 | Object.defineProperty(B, "foo", { value: function() { return 111; }}); |
| 42 | |
| 43 | C = Object.create(B); |
| 44 | |
| 45 | function bar(x) { return x.foo(); } |
| 46 | |
| 47 | assertEquals(111, bar(C)); |
| 48 | assertEquals(111, bar(C)); |
| 49 | ToDictionaryMode(B); |
| 50 | %OptimizeFunctionOnNextCall(bar); |
| 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)); |
| 69 | |
| 70 | // And once more for setters... |
| 71 | A = {}; |
| 72 | Object.defineProperty(A, "huh", { set: function(x) { assertUnreachable(); }}); |
| 73 | |
| 74 | B = Object.create(A); |
| 75 | var setterValue; |
| 76 | Object.defineProperty(B, "huh", { set: function(x) { setterValue = x; }}); |
| 77 | |
| 78 | C = Object.create(B); |
| 79 | |
| 80 | function fuu(x) { |
| 81 | setterValue = 222; |
| 82 | x.huh = 111; |
| 83 | return setterValue; |
| 84 | } |
| 85 | |
| 86 | assertEquals(111, fuu(C)); |
| 87 | assertEquals(111, fuu(C)); |
| 88 | ToDictionaryMode(B); |
| 89 | %OptimizeFunctionOnNextCall(fuu); |
| 90 | assertEquals(111, fuu(C)); |