1 // Copyright 2011 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 function mkCOWArray() { 31 var a = ['']; 32 assertEquals('', a[0]); 33 return a; 34 } 35 36 function mkArray() { 37 var a = []; 38 a[0] = ''; 39 return a; 40 } 41 42 function mkNumberDictionary() { 43 var a = new Array(); 44 a[0] = ''; 45 a[100000] = ''; 46 return a; 47 } 48 49 function write(a, i) { a[i] = "bazinga!"; } 50 51 function test(factories, w) { 52 factories.forEach(function(f) { w(f(), 0); }); 53 factories.forEach(function(f) { w(f(), 0); }); 54 %OptimizeFunctionOnNextCall(w); 55 factories.forEach(function(f) { w(f(), 0); }); 56 } 57 58 // Monomorphic case. 59 for (var i = 0; i < 5; i++) write(mkArray(), 0); 60 %OptimizeFunctionOnNextCall(write); 61 write(mkCOWArray(), 0); 62 var failure = mkCOWArray(); 63 64 // Cleanup, then polymorphic case. 65 %DeoptimizeFunction(write); 66 gc(); 67 test([mkArray, mkNumberDictionary], write); 68 test([mkArray, mkNumberDictionary, mkCOWArray], write); 69
