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: --allow-natives-syntax 29 // Flags: --concurrent-recompilation --block-concurrent-recompilation 30 31 if (!%IsConcurrentRecompilationSupported()) { 32 print("Concurrent recompilation is disabled. Skipping this test."); 33 quit(); 34 } 35 36 function f1(a, i) { 37 return a[i] + 0.5; 38 } 39 40 var arr = [0.0,,2.5]; 41 assertEquals(0.5, f1(arr, 0)); 42 assertEquals(0.5, f1(arr, 0)); 43 44 // Optimized code of f1 depends on initial object and array maps. 45 %OptimizeFunctionOnNextCall(f1, "concurrent"); 46 // Kick off recompilation; 47 assertEquals(0.5, f1(arr, 0)); 48 // Invalidate current initial object map after compile graph has been created. 49 Object.prototype[1] = 1.5; 50 assertEquals(2, f1(arr, 1)); 51 // Not yet optimized since concurrent recompilation is blocked. 52 assertUnoptimized(f1, "no sync"); 53 // Let concurrent recompilation proceed. 54 %UnblockConcurrentRecompilation(); 55 // Sync with background thread to conclude optimization, which bails out 56 // due to map dependency. 57 assertUnoptimized(f1, "sync"); 58 //Clear type info for stress runs. 59 %ClearFunctionTypeFeedback(f1); 60
