1// Copyright 2013 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: --fold-constants --nodead-code-elimination 29// Flags: --expose-gc --allow-natives-syntax 30// Flags: --concurrent-recompilation --block-concurrent-recompilation 31 32if (!%IsConcurrentRecompilationSupported()) { 33 print("Concurrent recompilation is disabled. Skipping this test."); 34 quit(); 35} 36 37function test(fun) { 38 fun(); 39 fun(); 40 // Mark for concurrent optimization. 41 %OptimizeFunctionOnNextCall(fun, "concurrent"); 42 // Kick off recompilation. 43 fun(); 44 // Tenure cons string after compile graph has been created. 45 gc(); 46 // In the mean time, concurrent recompiling is still blocked. 47 assertUnoptimized(fun, "no sync"); 48 // Let concurrent recompilation proceed. 49 %UnblockConcurrentRecompilation(); 50 // Concurrent recompilation eventually finishes, embeds tenured cons string. 51 assertOptimized(fun, "sync"); 52 // Visit embedded cons string during mark compact. 53 gc(); 54} 55 56function f() { 57 return "abcdefghijklmn" + "123456789"; 58} 59 60function g() { 61 return "abcdefghijklmn\u2603" + "123456789"; 62} 63 64function h() { 65 return "abcdefghijklmn\u2603" + "123456789\u2604"; 66} 67 68test(f); 69test(g); 70test(h); 71