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| 1 // Copyright 2010 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 --check-elimination | |
| 29 | |
| 30 | |
| 31 function test_empty() { | |
| 32 function foo(o) { | |
| 33 return { value: o.value }; | |
| 34 } | |
| 35 | |
| 36 function Base() { | |
| 37 this.v_ = 5; | |
| 38 } | |
| 39 Base.prototype.__defineGetter__("value", function() { return 1; }); | |
| 40 | |
| 41 var a = new Base(); | |
| 42 a.a = 1; | |
| 43 foo(a); | |
| 44 | |
| 45 Base.prototype.__defineGetter__("value", function() { return this.v_; }); | |
| 46 | |
| 47 var b = new Base(); | |
| 48 b.b = 1; | |
| 49 foo(b); | |
| 50 | |
| 51 var d = new Base(); | |
| 52 d.d = 1; | |
| 53 d.value; | |
| 54 | |
| 55 %OptimizeFunctionOnNextCall(foo); | |
| 56 | |
| 57 var o = foo(b); | |
| 58 } | |
| 59 | |
| 60 | |
| 61 function test_narrow1() { | |
| 62 function foo(o) { | |
| 63 return { value: o.value }; | |
| 64 } | |
| 65 | |
| 66 function Base() { | |
| 67 this.v_ = 5; | |
| 68 } | |
| 69 Base.prototype.__defineGetter__("value", function() { return 1; }); | |
| 70 | |
| 71 var a = new Base(); | |
| 72 a.a = 1; | |
| 73 foo(a); | |
| 74 | |
| 75 Base.prototype.__defineGetter__("value", function() { return this.v_; }); | |
| 76 | |
| 77 var b = new Base(); | |
| 78 b.b = 1; | |
| 79 foo(b); | |
| 80 | |
| 81 var c = new Base(); | |
| 82 c.c = 1; | |
| 83 foo(c); | |
| 84 | |
| 85 var d = new Base(); | |
| 86 d.d = 1; | |
| 87 d.value; | |
| 88 | |
| 89 %OptimizeFunctionOnNextCall(foo); | |
| 90 | |
| 91 var o = foo(b); | |
| 92 } | |
| 93 | |
| 94 | |
| 95 function test_narrow2() { | |
| 96 function foo(o, flag) { | |
| 97 return { value: o.value(flag) }; | |
| 98 } | |
| 99 | |
| 100 function Base() { | |
| 101 this.v_ = 5; | |
| 102 } | |
| 103 Base.prototype.value = function(flag) { return flag ? this.v_ : this.v_; }; | |
| 104 | |
| 105 | |
| 106 var a = new Base(); | |
| 107 a.a = 1; | |
| 108 foo(a, false); | |
| 109 foo(a, false); | |
| 110 | |
| 111 var b = new Base(); | |
| 112 b.b = 1; | |
| 113 foo(b, true); | |
| 114 | |
| 115 var c = new Base(); | |
| 116 c.c = 1; | |
| 117 foo(c, true); | |
| 118 | |
| 119 var d = new Base(); | |
| 120 d.d = 1; | |
| 121 d.value(true); | |
| 122 | |
| 123 %OptimizeFunctionOnNextCall(foo); | |
| 124 | |
| 125 var o = foo(b); | |
| 126 } | |
| 127 | |
| 128 test_empty(); | |
| 129 test_narrow1(); | |
| 130 test_narrow2(); | |
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