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 function test1() { 31 var a = Array(8); 32 assertTrue(%HasFastSmiOrObjectElements(a)); 33 assertTrue(%HasFastHoleyElements(a)); 34 } 35 36 function test2() { 37 var a = Array(); 38 assertTrue(%HasFastSmiOrObjectElements(a)); 39 assertFalse(%HasFastHoleyElements(a)); 40 } 41 42 function test3() { 43 var a = Array(1,2,3,4,5,6,7); 44 assertTrue(%HasFastSmiOrObjectElements(a)); 45 assertFalse(%HasFastHoleyElements(a)); 46 } 47 48 function test4() { 49 var a = [1, 2, 3, 4]; 50 assertTrue(%HasFastSmiElements(a)); 51 assertFalse(%HasFastHoleyElements(a)); 52 var b = [1, 2,, 4]; 53 assertTrue(%HasFastSmiElements(b)); 54 assertTrue(%HasFastHoleyElements(b)); 55 } 56 57 function test5() { 58 var a = [1, 2, 3, 4.5]; 59 assertTrue(%HasFastDoubleElements(a)); 60 assertFalse(%HasFastHoleyElements(a)); 61 var b = [1,, 3.5, 4]; 62 assertTrue(%HasFastDoubleElements(b)); 63 assertTrue(%HasFastHoleyElements(b)); 64 var c = [1, 3.5,, 4]; 65 assertTrue(%HasFastDoubleElements(c)); 66 assertTrue(%HasFastHoleyElements(c)); 67 } 68 69 function test6() { 70 var x = new Object(); 71 var a = [1, 2, 3.5, x]; 72 assertTrue(%HasFastObjectElements(a)); 73 assertFalse(%HasFastHoleyElements(a)); 74 assertEquals(1, a[0]); 75 assertEquals(2, a[1]); 76 assertEquals(3.5, a[2]); 77 assertEquals(x, a[3]); 78 var b = [1,, 3.5, x]; 79 assertTrue(%HasFastObjectElements(b)); 80 assertTrue(%HasFastHoleyElements(b)); 81 assertEquals(1, b[0]); 82 assertEquals(undefined, b[1]); 83 assertEquals(3.5, b[2]); 84 assertEquals(x, b[3]); 85 var c = [1, 3.5, x,,]; 86 assertTrue(%HasFastObjectElements(c)); 87 assertTrue(%HasFastHoleyElements(c)); 88 assertEquals(1, c[0]); 89 assertEquals(3.5, c[1]); 90 assertEquals(x, c[2]); 91 assertEquals(undefined, c[3]); 92 } 93 94 function test_with_optimization(f) { 95 // Run tests in a loop to make sure that inlined Array() constructor runs out 96 // of new space memory and must fall back on runtime impl. 97 for (i = 0; i < 25000; ++i) f(); 98 %OptimizeFunctionOnNextCall(f); 99 for (i = 0; i < 25000; ++i) f(); // Make sure GC happens 100 } 101 102 test_with_optimization(test1); 103 test_with_optimization(test2); 104 test_with_optimization(test3); 105 test_with_optimization(test4); 106 test_with_optimization(test5); 107 test_with_optimization(test6); 108
