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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: --allow-natives-syntax |
29 | 29 |
30 // Test usage of static type information for loads that would otherwise | 30 // Test materialization of an arguments object with unknown argument |
31 // turn into polymorphic or generic loads. | 31 // values in non-strict mode (length has to be zero). |
| 32 (function() { |
| 33 var deoptimize = { deopt:true }; |
| 34 var object = {}; |
32 | 35 |
33 // Prepare a highly polymorphic load to be used by all tests. | 36 object.a = function A(x, y, z) { |
34 Object.prototype.load = function() { return this.property; }; | 37 assertSame(0, arguments.length); |
35 Object.prototype.load.call({ A:0, property:10 }); | 38 return this.b(); |
36 Object.prototype.load.call({ A:0, B:0, property:11 }); | 39 }; |
37 Object.prototype.load.call({ A:0, B:0, C:0, property:12 }); | |
38 Object.prototype.load.call({ A:0, B:0, C:0, D:0, property:13 }); | |
39 Object.prototype.load.call({ A:0, B:0, C:0, D:0, E:0, property:14 }); | |
40 Object.prototype.load.call({ A:0, B:0, C:0, D:0, E:0, F:0, property:15 }); | |
41 | 40 |
42 // Test for object literals. | 41 object.b = function B() { |
43 (function() { | 42 assertSame(0, arguments.length); |
44 function f(x) { | 43 deoptimize.deopt; |
45 var object = { property:x }; | 44 return arguments.length; |
46 return object.load(); | 45 }; |
47 } | |
48 | 46 |
49 assertSame(1, f(1)); | 47 assertSame(0, object.a()); |
50 assertSame(2, f(2)); | 48 assertSame(0, object.a()); |
51 %OptimizeFunctionOnNextCall(f); | 49 %OptimizeFunctionOnNextCall(object.a); |
52 assertSame(3, f(3)); | 50 assertSame(0, object.a()); |
| 51 delete deoptimize.deopt; |
| 52 assertSame(0, object.a()); |
53 })(); | 53 })(); |
54 | 54 |
55 // Test for inlined constructors. | 55 |
| 56 // Test materialization of an arguments object with unknown argument |
| 57 // values in strict mode (length is allowed to exceed stack size). |
56 (function() { | 58 (function() { |
57 function c(x) { | 59 'use strict'; |
58 this.property = x; | 60 var deoptimize = { deopt:true }; |
59 } | 61 var object = {}; |
60 function f(x) { | |
61 var object = new c(x); | |
62 return object.load(); | |
63 } | |
64 | 62 |
65 assertSame(1, f(1)); | 63 object.a = function A(x, y, z) { |
66 assertSame(2, f(2)); | 64 assertSame(0, arguments.length); |
67 %OptimizeFunctionOnNextCall(f); | 65 return this.b(1, 2, 3, 4, 5, 6, 7, 8); |
68 assertSame(3, f(3)); | 66 }; |
| 67 |
| 68 object.b = function B(a, b, c, d, e, f, g, h) { |
| 69 assertSame(8, arguments.length); |
| 70 deoptimize.deopt; |
| 71 return arguments.length; |
| 72 }; |
| 73 |
| 74 assertSame(8, object.a()); |
| 75 assertSame(8, object.a()); |
| 76 %OptimizeFunctionOnNextCall(object.a); |
| 77 assertSame(8, object.a()); |
| 78 delete deoptimize.deopt; |
| 79 assertSame(8, object.a()); |
69 })(); | 80 })(); |
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