1 // Copyright 2012 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 29 30 // Test CompareIC stubs for normal and strict equality comparison of known 31 // objects in slow mode. These objects share the same map even though they 32 // might have completely different properties. 33 34 function eq(a, b) { 35 return a == b; 36 } 37 38 function eq_strict(a, b) { 39 return a === b; 40 } 41 42 function test(a, b) { 43 // Check CompareIC for equality of known objects. 44 assertTrue(eq(a, a)); 45 assertTrue(eq(b, b)); 46 assertFalse(eq(a, b)); 47 // Check CompareIC for strict equality of known objects. 48 assertTrue(eq_strict(a, a)); 49 assertTrue(eq_strict(b, b)); 50 assertFalse(eq_strict(a, b)); 51 } 52 53 // Prepare two objects in slow mode that have the same map. 54 var obj1 = %OptimizeObjectForAddingMultipleProperties({}, 1); 55 var obj2 = %OptimizeObjectForAddingMultipleProperties({}, 1); 56 57 // Test original objects. 58 assertTrue(%HaveSameMap(obj1, obj2)); 59 test(obj1, obj2); 60 61 // Test after adding property to first object. 62 obj1.x = 1; 63 assertTrue(%HaveSameMap(obj1, obj2)); 64 test(obj1, obj2); 65 66 // Test after adding property to second object. 67 obj2.y = 2; 68 assertTrue(%HaveSameMap(obj1, obj2)); 69 test(obj1, obj2); 70
