Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 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 --use-escape-analysis --expose-gc |
| 29 | |
| 30 | |
| 31 | // Simple test of capture |
| 32 | (function testCapturedArguments() { |
| 33 | function h() { |
| 34 | return g.arguments[0]; |
| 35 | } |
| 36 | |
| 37 | function g(x) { |
| 38 | return h(); |
| 39 | } |
| 40 | |
| 41 | function f() { |
| 42 | var l = { y : { z : 4 }, x : 2 } |
| 43 | var r = g(l); |
| 44 | assertEquals(2, r.x); |
| 45 | assertEquals(2, l.x); |
| 46 | l.x = 3; |
| 47 | l.y.z = 5; |
| 48 | // Test that the arguments object is properly |
| 49 | // aliased |
| 50 | assertEquals(3, r.x); |
| 51 | assertEquals(3, l.x); |
| 52 | assertEquals(5, r.y.z); |
| 53 | } |
| 54 | |
| 55 | f(); f(); f(); |
| 56 | %OptimizeFunctionOnNextCall(f); |
| 57 | f(); |
| 58 | })(); |
| 59 | |
| 60 | |
| 61 | // Get the arguments object twice, test aliasing |
| 62 | (function testTwoCapturedArguments() { |
| 63 | function h() { |
| 64 | return g.arguments[0]; |
| 65 | } |
| 66 | |
| 67 | function i() { |
| 68 | return g.arguments[0]; |
| 69 | } |
| 70 | |
| 71 | function g(x) { |
| 72 | return {h : h() , i : i()}; |
| 73 | } |
| 74 | |
| 75 | function f() { |
| 76 | var l = { y : { z : 4 }, x : 2 } |
| 77 | var r = g(l); |
| 78 | assertEquals(2, r.h.x) |
| 79 | l.y.z = 3; |
| 80 | assertEquals(3, r.h.y.z); |
| 81 | assertEquals(3, r.i.y.z); |
| 82 | } |
| 83 | |
| 84 | f(); f(); f(); |
| 85 | %OptimizeFunctionOnNextCall(f); |
| 86 | f(); |
| 87 | })(); |
| 88 | |
| 89 | |
| 90 | // Nested arguments object test |
| 91 | (function testTwoCapturedArgumentsNested() { |
| 92 | function i() { |
| 93 | return { gx : g.arguments[0], hx : h.arguments[0] }; |
| 94 | } |
| 95 | |
| 96 | function h(x) { |
| 97 | return i(); |
| 98 | } |
| 99 | |
| 100 | function g(x) { |
| 101 | return h(x.y); |
| 102 | } |
| 103 | |
| 104 | function f() { |
| 105 | var l = { y : { z : 4 }, x : 2 } |
| 106 | var r = g(l); |
| 107 | assertEquals(2, r.gx.x) |
| 108 | assertEquals(4, r.gx.y.z) |
| 109 | assertEquals(4, r.hx.z) |
| 110 | l.y.z = 3; |
| 111 | assertEquals(3, r.gx.y.z) |
| 112 | assertEquals(3, r.hx.z) |
| 113 | assertEquals(3, l.y.z) |
| 114 | } |
| 115 | |
| 116 | f(); f(); f(); |
| 117 | %OptimizeFunctionOnNextCall(f); |
| 118 | f(); f(); |
| 119 | %OptimizeFunctionOnNextCall(f); |
| 120 | f(); f(); |
| 121 | })(); |
| 122 | |
| 123 | |
| 124 | // Nested arguments object test with different inlining |
| 125 | (function testTwoCapturedArgumentsNested2() { |
| 126 | function i() { |
| 127 | return { gx : g.arguments[0], hx : h.arguments[0] }; |
| 128 | } |
| 129 | |
| 130 | function h(x) { |
| 131 | return i(); |
| 132 | } |
| 133 | |
| 134 | function g(x) { |
| 135 | return h(x.y); |
| 136 | } |
| 137 | |
| 138 | function f() { |
| 139 | var l = { y : { z : 4 }, x : 2 } |
| 140 | var r = g(l); |
| 141 | assertEquals(2, r.gx.x) |
| 142 | assertEquals(4, r.gx.y.z) |
| 143 | assertEquals(4, r.hx.z) |
| 144 | l.y.z = 3; |
| 145 | assertEquals(3, r.gx.y.z) |
| 146 | assertEquals(3, r.hx.z) |
| 147 | assertEquals(3, l.y.z) |
| 148 | } |
| 149 | |
| 150 | %NeverOptimizeFunction(i); |
| 151 | f(); f(); f(); |
| 152 | %OptimizeFunctionOnNextCall(f); |
| 153 | f(); f(); |
| 154 | %OptimizeFunctionOnNextCall(f); |
| 155 | f(); f(); |
| 156 | })(); |
| 157 | |
| 158 | |
| 159 | // Multiple captured argument test |
| 160 | (function testTwoArgumentsCapture() { |
| 161 | function h() { |
| 162 | return { a : g.arguments[1], b : g.arguments[0] }; |
| 163 | } |
| 164 | |
| 165 | function g(x, y) { |
| 166 | return h(); |
| 167 | } |
| 168 | |
| 169 | function f() { |
| 170 | var l = { y : { z : 4 }, x : 2 } |
| 171 | var k = { t : { u : 3 } }; |
| 172 | var r = g(k, l); |
| 173 | assertEquals(2, r.a.x) |
| 174 | assertEquals(4, r.a.y.z) |
| 175 | assertEquals(3, r.b.t.u) |
| 176 | l.y.z = 6; |
| 177 | r.b.t.u = 7; |
| 178 | assertEquals(6, r.a.y.z) |
| 179 | assertEquals(7, k.t.u) |
| 180 | } |
| 181 | |
| 182 | f(); f(); f(); |
| 183 | %OptimizeFunctionOnNextCall(f); |
| 184 | f(); f(); |
| 185 | %OptimizeFunctionOnNextCall(f); |
| 186 | f(); f(); |
| 187 | })(); |