1 // Copyright 2013 the V8 project authors. All rights reserved. 2 // Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. 3 // 4 // Redistribution and use in source and binary forms, with or without 5 // modification, are permitted provided that the following conditions 6 // are met: 7 // 1. Redistributions of source code must retain the above copyright 8 // notice, this list of conditions and the following disclaimer. 9 // 2. Redistributions in binary form must reproduce the above copyright 10 // notice, this list of conditions and the following disclaimer in the 11 // documentation and/or other materials provided with the distribution. 12 // 13 // THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY 14 // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 15 // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 16 // DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY 17 // DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 18 // (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 19 // LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 20 // ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 22 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23 24 description( 25 "Tests that the DFG does the right thing on strict equality for known strings." 26 ); 27 28 function foo(a, b) { 29 a = a.f; 30 b = b.f; 31 var c = a.length + b.length; 32 return [c, a === b]; 33 } 34 35 function bar(a, b) { 36 a = a.f; 37 b = b.f; 38 var c = a.length + b.length; 39 if (a === b) 40 return c + 1; 41 else 42 return c - 1; 43 } 44 45 for (var i = 0; i < 1000; ++i) { 46 var a = "blah" + i; 47 var b = "blah" + (1000 - i); 48 var areEqual = i == 500; 49 shouldBe("foo({f:\"" + a + "\"}, {f:\"" + b + "\"})", "[" + (a.length + b.length) + ", " + areEqual + "]"); 50 shouldBe("bar({f:\"" + a + "\"}, {f:\"" + b + "\"})", "" + (areEqual ? a.length + b.length + 1 : a.length + b.length - 1)); 51 } 52 53
