Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1 | // Copyright 2011 the V8 project authors. All rights reserved. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 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. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 27 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 28 | // Flags: --harmony-scoping --allow-natives-syntax |
| 29 | |
| 30 | // TODO(ES6): properly activate extended mode |
| 31 | "use strict"; |
| 32 | |
| 33 | // Check that the following functions are optimizable. |
| 34 | var functions = [ f1, f2, f3, f4, f5, f6, f7, f8, f9, f10, f11, f12, f13, f14, |
| 35 | f15, f16, f17, f18, f19, f20, f21, f22, f23 ]; |
| 36 | |
| 37 | for (var i = 0; i < functions.length; ++i) { |
| 38 | var func = functions[i]; |
| 39 | print("Testing:"); |
| 40 | print(func); |
| 41 | for (var j = 0; j < 10; ++j) { |
| 42 | func(12); |
| 43 | } |
| 44 | %OptimizeFunctionOnNextCall(func); |
| 45 | func(12); |
| 46 | assertTrue(%GetOptimizationStatus(func) != 2); |
| 47 | } |
| 48 | |
| 49 | function f1() { } |
| 50 | |
| 51 | function f2(x) { } |
| 52 | |
| 53 | function f3() { |
| 54 | let x; |
| 55 | } |
| 56 | |
| 57 | function f4() { |
| 58 | function foo() { |
| 59 | } |
| 60 | } |
| 61 | |
| 62 | function f5() { |
| 63 | let x = 1; |
| 64 | } |
| 65 | |
| 66 | function f6() { |
| 67 | const x = 1; |
| 68 | } |
| 69 | |
| 70 | function f7(x) { |
| 71 | return x; |
| 72 | } |
| 73 | |
| 74 | function f8() { |
| 75 | let x; |
| 76 | return x; |
| 77 | } |
| 78 | |
| 79 | function f9() { |
| 80 | function x() { |
| 81 | } |
| 82 | return x; |
| 83 | } |
| 84 | |
| 85 | function f10(x) { |
| 86 | x = 1; |
| 87 | } |
| 88 | |
| 89 | function f11() { |
| 90 | let x; |
| 91 | x = 1; |
| 92 | } |
| 93 | |
| 94 | function f12() { |
| 95 | function x() {}; |
| 96 | x = 1; |
| 97 | } |
| 98 | |
| 99 | function f13(x) { |
| 100 | (function() { x; }); |
| 101 | } |
| 102 | |
| 103 | function f14() { |
| 104 | let x; |
| 105 | (function() { x; }); |
| 106 | } |
| 107 | |
| 108 | function f15() { |
| 109 | function x() { |
| 110 | } |
| 111 | (function() { x; }); |
| 112 | } |
| 113 | |
| 114 | function f16() { |
| 115 | let x = 1; |
| 116 | (function() { x; }); |
| 117 | } |
| 118 | |
| 119 | function f17() { |
| 120 | const x = 1; |
| 121 | (function() { x; }); |
| 122 | } |
| 123 | |
| 124 | function f18(x) { |
| 125 | return x; |
| 126 | (function() { x; }); |
| 127 | } |
| 128 | |
| 129 | function f19() { |
| 130 | let x; |
| 131 | return x; |
| 132 | (function() { x; }); |
| 133 | } |
| 134 | |
| 135 | function f20() { |
| 136 | function x() { |
| 137 | } |
| 138 | return x; |
| 139 | (function() { x; }); |
| 140 | } |
| 141 | |
| 142 | function f21(x) { |
| 143 | x = 1; |
| 144 | (function() { x; }); |
| 145 | } |
| 146 | |
| 147 | function f22() { |
| 148 | let x; |
| 149 | x = 1; |
| 150 | (function() { x; }); |
| 151 | } |
| 152 | |
| 153 | function f23() { |
| 154 | function x() { } |
| 155 | x = 1; |
| 156 | (function() { x; }); |
| 157 | } |
| 158 | |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 159 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 160 | // Test that temporal dead zone semantics for function and block scoped |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 161 | // let bindings are handled by the optimizing compiler. |
| 162 | |
| 163 | function TestFunctionLocal(s) { |
| 164 | 'use strict'; |
| 165 | var func = eval("(function baz(){" + s + "; })"); |
| 166 | print("Testing:"); |
| 167 | print(func); |
| 168 | for (var i = 0; i < 5; ++i) { |
| 169 | try { |
| 170 | func(); |
| 171 | assertUnreachable(); |
| 172 | } catch (e) { |
| 173 | assertInstanceof(e, ReferenceError); |
| 174 | } |
| 175 | } |
| 176 | %OptimizeFunctionOnNextCall(func); |
| 177 | try { |
| 178 | func(); |
| 179 | assertUnreachable(); |
| 180 | } catch (e) { |
| 181 | assertInstanceof(e, ReferenceError); |
| 182 | } |
| 183 | } |
| 184 | |
| 185 | function TestFunctionContext(s) { |
| 186 | 'use strict'; |
| 187 | var func = eval("(function baz(){ " + s + "; (function() { x; }); })"); |
| 188 | print("Testing:"); |
| 189 | print(func); |
| 190 | for (var i = 0; i < 5; ++i) { |
| 191 | print(i); |
| 192 | try { |
| 193 | func(); |
| 194 | assertUnreachable(); |
| 195 | } catch (e) { |
| 196 | assertInstanceof(e, ReferenceError); |
| 197 | } |
| 198 | } |
| 199 | print("optimize"); |
| 200 | %OptimizeFunctionOnNextCall(func); |
| 201 | try { |
| 202 | print("call"); |
| 203 | func(); |
| 204 | assertUnreachable(); |
| 205 | } catch (e) { |
| 206 | print("catch"); |
| 207 | assertInstanceof(e, ReferenceError); |
| 208 | } |
| 209 | } |
| 210 | |
| 211 | function TestAll(s) { |
| 212 | TestFunctionLocal(s); |
| 213 | TestFunctionContext(s); |
| 214 | } |
| 215 | |
| 216 | // Use before initialization in declaration statement. |
| 217 | TestAll('let x = x + 1'); |
| 218 | TestAll('let x = x += 1'); |
| 219 | TestAll('let x = x++'); |
| 220 | TestAll('let x = ++x'); |
| 221 | TestAll('const x = x + 1'); |
| 222 | |
| 223 | // Use before initialization in prior statement. |
| 224 | TestAll('x + 1; let x;'); |
| 225 | TestAll('x = 1; let x;'); |
| 226 | TestAll('x += 1; let x;'); |
| 227 | TestAll('++x; let x;'); |
| 228 | TestAll('x++; let x;'); |
| 229 | TestAll('let y = x; const x = 1;'); |
| 230 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 231 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 232 | function f(x, b) { |
| 233 | let y = (b ? y : x) + 42; |
| 234 | return y; |
| 235 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 236 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 237 | function g(x, b) { |
| 238 | { |
| 239 | let y = (b ? y : x) + 42; |
| 240 | return y; |
| 241 | } |
| 242 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 243 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 244 | for (var i=0; i<10; i++) { |
| 245 | f(i, false); |
| 246 | g(i, false); |
| 247 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 248 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 249 | %OptimizeFunctionOnNextCall(f); |
| 250 | %OptimizeFunctionOnNextCall(g); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 251 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 252 | try { |
| 253 | f(42, true); |
| 254 | } catch (e) { |
| 255 | assertInstanceof(e, ReferenceError); |
| 256 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 257 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 258 | try { |
| 259 | g(42, true); |
| 260 | } catch (e) { |
| 261 | assertInstanceof(e, ReferenceError); |
| 262 | } |