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
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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
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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