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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
11 // with the distribution. | 11 // with the distribution. |
12 // * Neither the name of Google Inc. nor the names of its | 12 // * Neither the name of Google Inc. nor the names of its |
13 // contributors may be used to endorse or promote products derived | 13 // contributors may be used to endorse or promote products derived |
14 // from this software without specific prior written permission. | 14 // from this software without specific prior written permission. |
15 // | 15 // |
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 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. | 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | 27 |
28 // Flags: --allow-natives-syntax | 28 // Flags: --use-osr --allow-natives-syntax --crankshaft |
29 | 29 |
30 function f(i, b) { | 30 var o1 = {a : 10}; |
31 var a = 0; | 31 var o2 = { }; |
32 if (b) { | 32 o2.__proto__ = o1; |
33 var c = 1 << i; | 33 var o3 = { }; |
34 a = c + c; | 34 o3.__proto__ = o2; |
| 35 |
| 36 function f(n, x, b) { |
| 37 var sum = x.a; |
| 38 for (var i = 0; i < n; i++) { |
| 39 sum = 1.0 / i; |
35 } | 40 } |
36 var x = a >> 3; | 41 return sum; |
37 return a; | |
38 } | 42 } |
39 | 43 |
40 f(1, false); | 44 f(10, o3); |
41 f(1, true); | 45 f(20, o3); |
| 46 f(30, o3); |
| 47 %OptimizeFunctionOnNextCall(f, "concurrent"); |
| 48 f(100000, o3); |
| 49 // At this point OSR replaces already optimized code. |
| 50 // Check that it evicts old code from cache. |
| 51 |
| 52 // This causes all code for f to be lazily deopted. |
| 53 o2.a = 5; |
| 54 |
| 55 // If OSR did not evict the old code, it will be installed in f here. |
42 %OptimizeFunctionOnNextCall(f); | 56 %OptimizeFunctionOnNextCall(f); |
43 assertEquals((1 << 30) * 2, f(30, true)); | 57 f(10, o3); |
44 | 58 |
45 | 59 // The old code is already deoptimized, but f still points to it. |
46 var global = 1; | 60 // Disassembling it will crash. |
47 | 61 %DebugDisassembleFunction(f); |
48 function f2(b) { | |
49 var a = 0; | |
50 if (b) { | |
51 a = global; | |
52 } | |
53 var x = a >> 3; | |
54 return a; | |
55 } | |
56 | |
57 f2(false); | |
58 f2(true); | |
59 %OptimizeFunctionOnNextCall(f2); | |
60 global = 2.5; | |
61 assertEquals(global, f2(true)); | |
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