Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1 | // Copyright 2010 the V8 project authors. All rights reserved. |
Ben Murdoch | 8c569c4 | 2011-03-10 11:43:29 +0000 | [diff] [blame] | 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 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 28 | // Among other things, this code covers the case of deoptimization |
| 29 | // after a compare expression in an effect context. |
Ben Murdoch | 8c569c4 | 2011-03-10 11:43:29 +0000 | [diff] [blame] | 30 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 31 | function f0(x) { try { } catch (e) {}} |
| 32 | function f1(x) { try { } catch (e) {}} |
| 33 | function f2(x) { try { } catch (e) {}} |
| 34 | function f3(x) { try { } catch (e) {}} |
Ben Murdoch | 8c569c4 | 2011-03-10 11:43:29 +0000 | [diff] [blame] | 35 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 36 | var object = { a: "", b: false, c: {}}; |
| 37 | object.f = function(x) { return this; } |
Ben Murdoch | 8c569c4 | 2011-03-10 11:43:29 +0000 | [diff] [blame] | 38 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 39 | |
| 40 | function test(x) { |
| 41 | f0(x); |
| 42 | f1(x); |
| 43 | f2(x); |
| 44 | f3(x); |
| 45 | x.a.b == ""; |
| 46 | object.f("A").b = true; |
| 47 | object.f("B").a = ""; |
| 48 | object.f("C").c.display = "A"; |
| 49 | object.f("D").c.display = "A"; |
| 50 | } |
| 51 | |
| 52 | var x = {a: {b: "" }}; |
Ben Murdoch | 086aeea | 2011-05-13 15:57:08 +0100 | [diff] [blame^] | 53 | for (var i = 0; i < 20000; i++) test(x); |