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 // Verifies that the KeyedStoreIC correctly handles out-of-bounds stores 29 // to an array that grow it by a single element. Test functions are 30 // called twice to make sure that the IC is used, first call is handled 31 // by the runtime in the miss stub. 32 33 function array_store_1(a,b,c) { 34 return (a[b] = c); 35 } 36 37 // Check handling of the empty array. 38 var a = []; 39 array_store_1(a, 0, 1); 40 a = []; 41 array_store_1(a, 0, 1); 42 assertEquals(1, a[0]); 43 assertEquals(1, array_store_1([], 0, 1)); 44 45 a = []; 46 for (x=0;x<100000;++x) { 47 assertEquals(x, array_store_1(a, x, x)); 48 } 49 50 for (x=0;x<100000;++x) { 51 assertEquals(x, array_store_1([], 0, x)); 52 } 53 54 function array_store_2(a,b,c) { 55 return (a[b] = c); 56 } 57 58 a = []; 59 array_store_2(a, 0, 0.5); 60 a = []; 61 array_store_2(a, 0, 0.5); 62 assertEquals(0.5, a[0]); 63 assertEquals(0.5, array_store_2([], 0, 0.5)); 64 65 function array_store_3(a,b,c) { 66 return (a[b] = c); 67 } 68 69 x = new Object(); 70 a = []; 71 array_store_3(a, 0, x); 72 a = []; 73 array_store_3(a, 0, x); 74 assertEquals(x, a[0]); 75 assertEquals(x, array_store_3([], 0, x)); 76 77 // Check the handling of COW arrays 78 function makeCOW() { 79 return [1]; 80 } 81 82 function array_store_4(a,b,c) { 83 return (a[b] = c); 84 } 85 86 a = makeCOW(); 87 array_store_4(a, 1, 1); 88 a = makeCOW(); 89 array_store_4(a, 1, 1); 90 assertEquals(1, a[1]); 91 assertEquals(1, array_store_4([], 1, 1)); 92 93 function array_store_5(a,b,c) { 94 return (a[b] = c); 95 } 96 97 a = makeCOW(); 98 array_store_5(a, 1, 0.5); 99 a = makeCOW(); 100 array_store_5(a, 1, 0.5); 101 assertEquals(0.5, a[1]); 102 assertEquals(0.5, array_store_5([], 1, 0.5)); 103 104 function array_store_6(a,b,c) { 105 return (a[b] = c); 106 } 107 108 a = makeCOW(); 109 array_store_6(a, 1, x); 110 a = makeCOW(); 111 array_store_6(a, 1, x); 112 assertEquals(x, a[1]); 113 assertEquals(x, array_store_6([], 1, x)); 114 115 // Check the handling of mutable arrays. 116 a = new Array(1,2,3); 117 array_store_4(a, 3, 1); 118 a = new Array(1,2,3); 119 array_store_4(a, 3, 1); 120 assertEquals(1, a[3]); 121 assertEquals(1, array_store_4([], 3, 1)); 122 123 function array_store_5(a,b,c) { 124 return (a[b] = c); 125 } 126 127 a = new Array(1,2,3); 128 array_store_5(a, 3, 0.5); 129 a = new Array(1,2,3); 130 array_store_5(a, 3, 0.5); 131 assertEquals(0.5, a[3]); 132 assertEquals(0.5, array_store_5([], 3, 0.5)); 133 134 function array_store_6(a,b,c) { 135 return (a[b] = c); 136 } 137 138 a = new Array(1,2,3); 139 array_store_6(a, 3, x); 140 a = new Array(1,2,3); 141 array_store_6(a, 3, x); 142 assertEquals(x, a[3]); 143 assertEquals(x, array_store_6([], 3, x)); 144 145 function array_store_7(a,b,c) { 146 return (a[b] = c); 147 } 148 149 // Check the handling of mutable arrays of doubles 150 var a = new Array(0.5, 1.5); 151 array_store_7(a, 2, .5); 152 a = new Array(0.5, 1.5); 153 array_store_7(a, 2, .5); 154 assertEquals(0.5, a[2]); 155 a = new Array(0.5, 1.5); 156 assertEquals(0.5, array_store_7(a, 2, 0.5)); 157 158 for (x=0;x<100000;++x) { 159 a = new Array(0.5, 1.5); 160 assertEquals(x, array_store_7(a, 2, x)); 161 } 162 163 function array_store_8(a,b,c) { 164 return (a[b] = c); 165 } 166 167 var a = new Array(0.5, 1.5); 168 array_store_8(a, 2, .5); 169 a = new Array(0.5, 1.5); 170 array_store_8(a, 10, .5); 171 assertEquals(0.5, a[10]); 172 173 // Grow the empty array with a double store. 174 function array_store_9(a,b,c) { 175 return (a[b] = c); 176 } 177 178 var a = []; 179 array_store_9(a, 0, 0.5); 180 a = []; 181 array_store_1(a, 0, 0.5); 182 assertEquals(0.5, a[0]); 183 assertEquals(0.5, array_store_1([], 0, 0.5)); 184
