1 // Copyright 2010 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 --check-elimination 29 30 function A(x, y) { 31 this.x = x; 32 this.y = y; 33 } 34 35 function B(x, y) { 36 this.x = x; 37 this.y = y; 38 } 39 40 function F1(a, b) { 41 if (a == b) return a.x; 42 else return b.x; 43 } 44 45 function F2(a, b) { 46 if (a == b) return a.x; 47 else return b.x; 48 } 49 50 function F3(a, b) { 51 var f = a.y; 52 if (a == b) return a.x; 53 else return b.x; 54 } 55 56 function F4(a, b) { 57 var f = b.y; 58 if (a == b) return a.x; 59 else return b.x; 60 } 61 62 %NeverOptimizeFunction(test); 63 64 function test(f, a, b) { 65 f(a, a); 66 f(a, b); 67 f(b, a); 68 f(b, c); 69 f(b, b); 70 f(c, c); 71 72 %OptimizeFunctionOnNextCall(f) 73 74 assertEquals(a.x, f(a, a)); 75 assertEquals(b.x, f(b, b)); 76 } 77 78 var a = new A(3, 5); 79 var b = new B(2, 6); 80 var c = new A(1, 7); 81 82 test(F1, a, c); 83 test(F2, a, b); 84 test(F3, a, b); 85 test(F4, a, b); 86
