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