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 --smi-only-arrays --packed-arrays 29 30var has_packed_elements = !%HasFastHoleyElements(Array()); 31 32function test1() { 33 var a = Array(8); 34 assertTrue(%HasFastSmiOrObjectElements(a)); 35 assertTrue(%HasFastHoleyElements(a)); 36} 37 38function test2() { 39 var a = Array(); 40 assertTrue(%HasFastSmiOrObjectElements(a)); 41 assertFalse(%HasFastHoleyElements(a)); 42} 43 44function test3() { 45 var a = Array(1,2,3,4,5,6,7); 46 assertTrue(%HasFastSmiOrObjectElements(a)); 47 assertFalse(%HasFastHoleyElements(a)); 48} 49 50function test4() { 51 var a = [1, 2, 3, 4]; 52 assertTrue(%HasFastSmiElements(a)); 53 assertFalse(%HasFastHoleyElements(a)); 54 var b = [1, 2,, 4]; 55 assertTrue(%HasFastSmiElements(b)); 56 assertTrue(%HasFastHoleyElements(b)); 57} 58 59function test5() { 60 var a = [1, 2, 3, 4.5]; 61 assertTrue(%HasFastDoubleElements(a)); 62 assertFalse(%HasFastHoleyElements(a)); 63 var b = [1,, 3.5, 4]; 64 assertTrue(%HasFastDoubleElements(b)); 65 assertTrue(%HasFastHoleyElements(b)); 66 var c = [1, 3.5,, 4]; 67 assertTrue(%HasFastDoubleElements(c)); 68 assertTrue(%HasFastHoleyElements(c)); 69} 70 71function test6() { 72 var x = new Object(); 73 var a = [1, 2, 3.5, x]; 74 assertTrue(%HasFastObjectElements(a)); 75 assertFalse(%HasFastHoleyElements(a)); 76 assertEquals(1, a[0]); 77 assertEquals(2, a[1]); 78 assertEquals(3.5, a[2]); 79 assertEquals(x, a[3]); 80 var b = [1,, 3.5, x]; 81 assertTrue(%HasFastObjectElements(b)); 82 assertTrue(%HasFastHoleyElements(b)); 83 assertEquals(1, b[0]); 84 assertEquals(undefined, b[1]); 85 assertEquals(3.5, b[2]); 86 assertEquals(x, b[3]); 87 var c = [1, 3.5, x,,]; 88 assertTrue(%HasFastObjectElements(c)); 89 assertTrue(%HasFastHoleyElements(c)); 90 assertEquals(1, c[0]); 91 assertEquals(3.5, c[1]); 92 assertEquals(x, c[2]); 93 assertEquals(undefined, c[3]); 94} 95 96function test_with_optimization(f) { 97 // Run tests in a loop to make sure that inlined Array() constructor runs out 98 // of new space memory and must fall back on runtime impl. 99 for (i = 0; i < 25000; ++i) f(); 100 %OptimizeFunctionOnNextCall(f); 101 for (i = 0; i < 25000; ++i) f(); // Make sure GC happens 102} 103 104if (has_packed_elements) { 105 test_with_optimization(test1); 106 test_with_optimization(test2); 107 test_with_optimization(test3); 108 test_with_optimization(test4); 109 test_with_optimization(test5); 110 test_with_optimization(test6); 111} 112