JezK
Edit File: regress-1560.js
// Copyright 2011 the V8 project authors. All rights reserved. // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following // disclaimer in the documentation and/or other materials provided // with the distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived // from this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. // Flags: --allow-natives-syntax --expose-gc function mkCOWArray() { var a = ['']; assertEquals('', a[0]); return a; } function mkArray() { var a = []; a[0] = ''; return a; } function mkNumberDictionary() { var a = new Array(); a[0] = ''; a[100000] = ''; return a; } function write(a, i) { a[i] = "bazinga!"; } function test(factories, w) { factories.forEach(function(f) { w(f(), 0); }); factories.forEach(function(f) { w(f(), 0); }); %OptimizeFunctionOnNextCall(w); factories.forEach(function(f) { w(f(), 0); }); } // Monomorphic case. for (var i = 0; i < 5; i++) write(mkArray(), 0); %OptimizeFunctionOnNextCall(write); write(mkCOWArray(), 0); var failure = mkCOWArray(); // Cleanup, then polymorphic case. %DeoptimizeFunction(write); gc(); test([mkArray, mkNumberDictionary], write); test([mkArray, mkNumberDictionary, mkCOWArray], write);