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 --expose-gc 29 30 // IC and Crankshaft support for smi-only elements in dynamic array literals. 31 function get(foo) { return foo; } // Used to generate dynamic values. 32 33 function array_literal_test() { 34 var a0 = [1, 2, 3]; 35 assertTrue(%HasFastSmiElements(a0)); 36 var a1 = [get(1), get(2), get(3)]; 37 assertTrue(%HasFastSmiElements(a1)); 38 39 var b0 = [1, 2, get("three")]; 40 assertTrue(%HasFastObjectElements(b0)); 41 var b1 = [get(1), get(2), get("three")]; 42 assertTrue(%HasFastObjectElements(b1)); 43 44 var c0 = [1, 2, get(3.5)]; 45 assertTrue(%HasFastDoubleElements(c0)); 46 assertEquals(3.5, c0[2]); 47 assertEquals(2, c0[1]); 48 assertEquals(1, c0[0]); 49 50 var c1 = [1, 2, 3.5]; 51 assertTrue(%HasFastDoubleElements(c1)); 52 assertEquals(3.5, c1[2]); 53 assertEquals(2, c1[1]); 54 assertEquals(1, c1[0]); 55 56 var c2 = [get(1), get(2), get(3.5)]; 57 assertTrue(%HasFastDoubleElements(c2)); 58 assertEquals(3.5, c2[2]); 59 assertEquals(2, c2[1]); 60 assertEquals(1, c2[0]); 61 62 var object = new Object(); 63 var d0 = [1, 2, object]; 64 assertTrue(%HasFastObjectElements(d0)); 65 assertEquals(object, d0[2]); 66 assertEquals(2, d0[1]); 67 assertEquals(1, d0[0]); 68 69 var e0 = [1, 2, 3.5]; 70 assertTrue(%HasFastDoubleElements(e0)); 71 assertEquals(3.5, e0[2]); 72 assertEquals(2, e0[1]); 73 assertEquals(1, e0[0]); 74 75 var f0 = [1, 2, [1, 2]]; 76 assertTrue(%HasFastObjectElements(f0)); 77 assertEquals([1,2], f0[2]); 78 assertEquals(2, f0[1]); 79 assertEquals(1, f0[0]); 80 } 81 82 for (var i = 0; i < 3; i++) { 83 array_literal_test(); 84 } 85 %OptimizeFunctionOnNextCall(array_literal_test); 86 array_literal_test(); 87 88 function test_large_literal() { 89 90 function d() { 91 gc(); 92 return 2.5; 93 } 94 95 function o() { 96 gc(); 97 return new Object(); 98 } 99 100 large = 101 [ 0, 1, 2, 3, 4, 5, d(), d(), d(), d(), d(), d(), o(), o(), o(), o() ]; 102 assertFalse(%HasDictionaryElements(large)); 103 assertFalse(%HasFastSmiElements(large)); 104 assertFalse(%HasFastDoubleElements(large)); 105 assertTrue(%HasFastObjectElements(large)); 106 assertEquals(large, 107 [0, 1, 2, 3, 4, 5, 2.5, 2.5, 2.5, 2.5, 2.5, 2.5, 108 new Object(), new Object(), new Object(), new Object()]); 109 } 110 111 for (var i = 0; i < 3; i++) { 112 test_large_literal(); 113 } 114 %OptimizeFunctionOnNextCall(test_large_literal); 115 test_large_literal(); 116 117 function deopt_array(use_literal) { 118 if (use_literal) { 119 return [.5, 3, 4]; 120 } else { 121 return new Array(); 122 } 123 } 124 125 deopt_array(false); 126 deopt_array(false); 127 deopt_array(false); 128 %OptimizeFunctionOnNextCall(deopt_array); 129 var array = deopt_array(false); 130 assertOptimized(deopt_array); 131 deopt_array(true); 132 assertOptimized(deopt_array); 133 array = deopt_array(false); 134 assertOptimized(deopt_array); 135 136 // Check that unexpected changes in the objects stored into the boilerplate 137 // also force a deopt. 138 function deopt_array_literal_all_smis(a) { 139 return [0, 1, a]; 140 } 141 142 deopt_array_literal_all_smis(2); 143 deopt_array_literal_all_smis(3); 144 deopt_array_literal_all_smis(4); 145 array = deopt_array_literal_all_smis(4); 146 assertEquals(0, array[0]); 147 assertEquals(1, array[1]); 148 assertEquals(4, array[2]); 149 %OptimizeFunctionOnNextCall(deopt_array_literal_all_smis); 150 array = deopt_array_literal_all_smis(5); 151 array = deopt_array_literal_all_smis(6); 152 assertOptimized(deopt_array_literal_all_smis); 153 assertEquals(0, array[0]); 154 assertEquals(1, array[1]); 155 assertEquals(6, array[2]); 156 157 array = deopt_array_literal_all_smis(.5); 158 assertUnoptimized(deopt_array_literal_all_smis); 159 assertEquals(0, array[0]); 160 assertEquals(1, array[1]); 161 assertEquals(.5, array[2]); 162 163 function deopt_array_literal_all_doubles(a) { 164 return [0.5, 1, a]; 165 } 166 167 deopt_array_literal_all_doubles(.5); 168 deopt_array_literal_all_doubles(.5); 169 deopt_array_literal_all_doubles(.5); 170 array = deopt_array_literal_all_doubles(0.5); 171 assertEquals(0.5, array[0]); 172 assertEquals(1, array[1]); 173 assertEquals(0.5, array[2]); 174 %OptimizeFunctionOnNextCall(deopt_array_literal_all_doubles); 175 array = deopt_array_literal_all_doubles(5); 176 array = deopt_array_literal_all_doubles(6); 177 assertOptimized(deopt_array_literal_all_doubles); 178 assertEquals(0.5, array[0]); 179 assertEquals(1, array[1]); 180 assertEquals(6, array[2]); 181 182 var foo = new Object(); 183 array = deopt_array_literal_all_doubles(foo); 184 assertUnoptimized(deopt_array_literal_all_doubles); 185 assertEquals(0.5, array[0]); 186 assertEquals(1, array[1]); 187 assertEquals(foo, array[2]); 188 189 (function literals_after_osr() { 190 var color = [0]; 191 // Trigger OSR, if optimization is not disabled. 192 if (%GetOptimizationStatus(literals_after_osr) != 4) { 193 while (%GetOptimizationCount(literals_after_osr) == 0) {} 194 } 195 return [color[0]]; 196 })(); 197
