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 function Test() { 29 this.result = 0; 30 this.x = 0; 31 this.y = 0; 32 this.z = 0; 33 } 34 var a = 1; 35 var b = 2; 36 var c = 4; 37 var d = 8; 38 39 // Test operations expected to stay on the fast path. Enumerate all binary 40 // trees with <= 4 leaves. 41 Test.prototype.test0 = function () { 42 this.result = a | b; 43 }; 44 45 Test.prototype.test1 = function() { 46 this.result = (a | b) | c; 47 }; 48 49 Test.prototype.test2 = function() { 50 this.result = a | (b | c); 51 }; 52 53 Test.prototype.test3 = function() { 54 this.result = ((a | b) | c) | d; 55 }; 56 57 Test.prototype.test4 = function() { 58 this.result = (a | (b | c)) | d; 59 }; 60 61 Test.prototype.test5 = function() { 62 this.result = (a | b) | (c | d); 63 }; 64 65 Test.prototype.test6 = function() { 66 this.result = a | ((b | c) | d); 67 }; 68 69 Test.prototype.test7 = function() { 70 this.result = a | (b | (c | d)); 71 }; 72 73 // These tests should fail if we bailed out to the beginning of the full 74 // code. 75 Test.prototype.test8 = function () { 76 // If this.x = 1 and a = 1.1: 77 this.y = this.x | b; // Should be (1 | 2) == 3. 78 this.x = c; // Should be 4. 79 this.z = this.x | a; // Should be (4 | 1.1) == 5. 80 }; 81 82 Test.prototype.test9 = function() { 83 // If this.x = 2 and a = 1.1: 84 this.z = // (14 | 1.1) == 15 85 (this.x = // (6 | 8) == 14 86 (this.y = // (2 | 4) == 6 87 this.x // 2 88 | c) // 4 89 | d) // 8 90 | a; // 1.1 91 } 92 93 Test.prototype.test10 = function() { 94 this.z = (a >> b) | (c >> c); 95 } 96 97 Test.prototype.test11 = function(x) { 98 this.z = x >> x; 99 } 100 101 var t = new Test(); 102 103 t.test0(); 104 assertEquals(3, t.result); 105 106 t.test1(); 107 assertEquals(7, t.result); 108 t.test2(); 109 assertEquals(7, t.result); 110 111 t.test3(); 112 assertEquals(15, t.result); 113 t.test4(); 114 assertEquals(15, t.result); 115 t.test5(); 116 assertEquals(15, t.result); 117 t.test6(); 118 assertEquals(15, t.result); 119 t.test7(); 120 assertEquals(15, t.result); 121 122 a = 1.1; 123 t.x = 1; 124 t.test8(); 125 assertEquals(4, t.x); 126 assertEquals(3, t.y); 127 assertEquals(5, t.z); 128 129 t.x = 2; 130 t.test9(); 131 assertEquals(14, t.x); 132 assertEquals(6, t.y); 133 assertEquals(15, t.z); 134 135 a = "2"; 136 t.test11(a); 137 assertEquals(0, t.z); 138 139 a = 4; 140 b = "1"; 141 c = 2; 142 t.test10(); 143 assertEquals(2, t.z); 144
