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| 1 // Copyright 2011 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 | |
| 29 // Flags: --harmony-sloppy --harmony-sloppy-let | |
| 30 | |
| 31 // Check that the following functions are optimizable. | |
| 32 var functions = [ f1, f2, f3, f4, f5, f6, f7, f8, f9, f10, f11, f12, f13, f14, | |
| 33 f15, f16, f17, f18, f19, f20, f21, f22, f23, f24, f25, f26, | |
| 34 f27, f28, f29, f30, f31, f32, f33]; | |
| 35 | |
| 36 for (var i = 0; i < functions.length; ++i) { | |
| 37 var func = functions[i]; | |
| 38 print("Testing:"); | |
| 39 print(func); | |
| 40 for (var j = 0; j < 10; ++j) { | |
| 41 func(12); | |
| 42 } | |
| 43 %OptimizeFunctionOnNextCall(func); | |
| 44 func(12); | |
| 45 assertOptimized(func); | |
| 46 } | |
| 47 | |
| 48 function f1() { } | |
| 49 | |
| 50 function f2(x) { } | |
| 51 | |
| 52 function f3() { | |
| 53 let x; | |
| 54 } | |
| 55 | |
| 56 function f4() { | |
| 57 function foo() { | |
| 58 } | |
| 59 } | |
| 60 | |
| 61 function f5() { | |
| 62 let x = 1; | |
| 63 } | |
| 64 | |
| 65 function f6() { | |
| 66 const x = 1; | |
| 67 } | |
| 68 | |
| 69 function f7(x) { | |
| 70 return x; | |
| 71 } | |
| 72 | |
| 73 function f8() { | |
| 74 let x; | |
| 75 return x; | |
| 76 } | |
| 77 | |
| 78 function f9() { | |
| 79 function x() { | |
| 80 } | |
| 81 return x; | |
| 82 } | |
| 83 | |
| 84 function f10(x) { | |
| 85 x = 1; | |
| 86 } | |
| 87 | |
| 88 function f11() { | |
| 89 let x; | |
| 90 x = 1; | |
| 91 } | |
| 92 | |
| 93 function f12() { | |
| 94 function x() {}; | |
| 95 x = 1; | |
| 96 } | |
| 97 | |
| 98 function f13(x) { | |
| 99 (function() { x; }); | |
| 100 } | |
| 101 | |
| 102 function f14() { | |
| 103 let x; | |
| 104 (function() { x; }); | |
| 105 } | |
| 106 | |
| 107 function f15() { | |
| 108 function x() { | |
| 109 } | |
| 110 (function() { x; }); | |
| 111 } | |
| 112 | |
| 113 function f16() { | |
| 114 let x = 1; | |
| 115 (function() { x; }); | |
| 116 } | |
| 117 | |
| 118 function f17() { | |
| 119 const x = 1; | |
| 120 (function() { x; }); | |
| 121 } | |
| 122 | |
| 123 function f18(x) { | |
| 124 return x; | |
| 125 (function() { x; }); | |
| 126 } | |
| 127 | |
| 128 function f19() { | |
| 129 let x; | |
| 130 return x; | |
| 131 (function() { x; }); | |
| 132 } | |
| 133 | |
| 134 function f20() { | |
| 135 function x() { | |
| 136 } | |
| 137 return x; | |
| 138 (function() { x; }); | |
| 139 } | |
| 140 | |
| 141 function f21(x) { | |
| 142 x = 1; | |
| 143 (function() { x; }); | |
| 144 } | |
| 145 | |
| 146 function f22() { | |
| 147 let x; | |
| 148 x = 1; | |
| 149 (function() { x; }); | |
| 150 } | |
| 151 | |
| 152 function f23() { | |
| 153 function x() { } | |
| 154 x = 1; | |
| 155 (function() { x; }); | |
| 156 } | |
| 157 | |
| 158 function f24() { | |
| 159 let x = 1; | |
| 160 { | |
| 161 let x = 2; | |
| 162 { | |
| 163 let x = 3; | |
| 164 assertEquals(3, x); | |
| 165 } | |
| 166 assertEquals(2, x); | |
| 167 } | |
| 168 assertEquals(1, x); | |
| 169 } | |
| 170 | |
| 171 function f25() { | |
| 172 { | |
| 173 let x = 2; | |
| 174 L: { | |
| 175 let x = 3; | |
| 176 assertEquals(3, x); | |
| 177 break L; | |
| 178 assertTrue(false); | |
| 179 } | |
| 180 assertEquals(2, x); | |
| 181 } | |
| 182 assertTrue(true); | |
| 183 } | |
| 184 | |
| 185 function f26() { | |
| 186 { | |
| 187 let x = 1; | |
| 188 L: { | |
| 189 let x = 2; | |
| 190 { | |
| 191 let x = 3; | |
| 192 assertEquals(3, x); | |
| 193 break L; | |
| 194 assertTrue(false); | |
| 195 } | |
| 196 assertTrue(false); | |
| 197 } | |
| 198 assertEquals(1, x); | |
| 199 } | |
| 200 } | |
| 201 | |
| 202 | |
| 203 function f27() { | |
| 204 do { | |
| 205 let x = 4; | |
| 206 assertEquals(4,x); | |
| 207 { | |
| 208 let x = 5; | |
| 209 assertEquals(5, x); | |
| 210 continue; | |
| 211 assertTrue(false); | |
| 212 } | |
| 213 } while (false); | |
| 214 } | |
| 215 | |
| 216 function f28() { | |
| 217 label: for (var i = 0; i < 10; ++i) { | |
| 218 let x = 'middle' + i; | |
| 219 for (var j = 0; j < 10; ++j) { | |
| 220 let x = 'inner' + j; | |
| 221 continue label; | |
| 222 } | |
| 223 } | |
| 224 } | |
| 225 | |
| 226 function f29() { | |
| 227 // Verify that the context is correctly set in the stack frame after exiting | |
| 228 // from with. | |
| 229 | |
| 230 let x = 'outer'; | |
| 231 label: { | |
| 232 let x = 'inner'; | |
| 233 break label; | |
| 234 } | |
| 235 f(); // The context could be restored from the stack after the call. | |
| 236 assertEquals('outer', x); | |
| 237 | |
| 238 function f() { | |
| 239 assertEquals('outer', x); | |
| 240 }; | |
| 241 } | |
| 242 | |
| 243 function f30() { | |
| 244 let x = 'outer'; | |
| 245 for (var i = 0; i < 10; ++i) { | |
| 246 let x = 'inner'; | |
| 247 continue; | |
| 248 } | |
| 249 f(); | |
| 250 assertEquals('outer', x); | |
| 251 | |
| 252 function f() { | |
| 253 assertEquals('outer', x); | |
| 254 }; | |
| 255 } | |
| 256 | |
| 257 function f31() { | |
| 258 { | |
| 259 let x = 'outer'; | |
| 260 label: for (var i = 0; assertEquals('outer', x), i < 10; ++i) { | |
| 261 let x = 'middle' + i; | |
| 262 { | |
| 263 let x = 'inner' + j; | |
| 264 continue label; | |
| 265 } | |
| 266 } | |
| 267 assertEquals('outer', x); | |
| 268 } | |
| 269 } | |
| 270 | |
| 271 var c = true; | |
| 272 | |
| 273 function f32() { | |
| 274 { | |
| 275 let x = 'outer'; | |
| 276 L: { | |
| 277 { | |
| 278 let x = 'inner'; | |
| 279 if (c) { | |
| 280 break L; | |
| 281 } | |
| 282 } | |
| 283 foo(); | |
| 284 } | |
| 285 } | |
| 286 | |
| 287 function foo() { | |
| 288 return 'bar'; | |
| 289 } | |
| 290 } | |
| 291 | |
| 292 function f33() { | |
| 293 { | |
| 294 let x = 'outer'; | |
| 295 L: { | |
| 296 { | |
| 297 let x = 'inner'; | |
| 298 if (c) { | |
| 299 break L; | |
| 300 } | |
| 301 foo(); | |
| 302 } | |
| 303 } | |
| 304 } | |
| 305 | |
| 306 function foo() { | |
| 307 return 'bar'; | |
| 308 } | |
| 309 } | |
| 310 | |
| 311 function TestThrow() { | |
| 312 function f() { | |
| 313 let x = 'outer'; | |
| 314 { | |
| 315 let x = 'inner'; | |
| 316 throw x; | |
| 317 } | |
| 318 } | |
| 319 for (var i = 0; i < 5; i++) { | |
| 320 try { | |
| 321 f(); | |
| 322 } catch (e) { | |
| 323 assertEquals('inner', e); | |
| 324 } | |
| 325 } | |
| 326 %OptimizeFunctionOnNextCall(f); | |
| 327 try { | |
| 328 f(); | |
| 329 } catch (e) { | |
| 330 assertEquals('inner', e); | |
| 331 } | |
| 332 assertOptimized(f); | |
| 333 } | |
| 334 | |
| 335 TestThrow(); | |
| 336 | |
| 337 // Test that temporal dead zone semantics for function and block scoped | |
| 338 // let bindings are handled by the optimizing compiler. | |
| 339 | |
| 340 function TestFunctionLocal(s) { | |
| 341 'use strict'; | |
| 342 var func = eval("(function baz(){" + s + "; })"); | |
| 343 print("Testing:"); | |
| 344 print(func); | |
| 345 for (var i = 0; i < 5; ++i) { | |
| 346 try { | |
| 347 func(); | |
| 348 assertUnreachable(); | |
| 349 } catch (e) { | |
| 350 assertInstanceof(e, ReferenceError); | |
| 351 } | |
| 352 } | |
| 353 %OptimizeFunctionOnNextCall(func); | |
| 354 try { | |
| 355 func(); | |
| 356 assertUnreachable(); | |
| 357 } catch (e) { | |
| 358 assertInstanceof(e, ReferenceError); | |
| 359 } | |
| 360 } | |
| 361 | |
| 362 function TestFunctionContext(s) { | |
| 363 'use strict'; | |
| 364 var func = eval("(function baz(){ " + s + "; (function() { x; }); })"); | |
| 365 print("Testing:"); | |
| 366 print(func); | |
| 367 for (var i = 0; i < 5; ++i) { | |
| 368 print(i); | |
| 369 try { | |
| 370 func(); | |
| 371 assertUnreachable(); | |
| 372 } catch (e) { | |
| 373 assertInstanceof(e, ReferenceError); | |
| 374 } | |
| 375 } | |
| 376 print("optimize"); | |
| 377 %OptimizeFunctionOnNextCall(func); | |
| 378 try { | |
| 379 print("call"); | |
| 380 func(); | |
| 381 assertUnreachable(); | |
| 382 } catch (e) { | |
| 383 print("catch"); | |
| 384 assertInstanceof(e, ReferenceError); | |
| 385 } | |
| 386 } | |
| 387 | |
| 388 function TestBlockLocal(s) { | |
| 389 'use strict'; | |
| 390 var func = eval("(function baz(){ { " + s + "; } })"); | |
| 391 print("Testing:"); | |
| 392 print(func); | |
| 393 for (var i = 0; i < 5; ++i) { | |
| 394 try { | |
| 395 func(); | |
| 396 assertUnreachable(); | |
| 397 } catch (e) { | |
| 398 assertInstanceof(e, ReferenceError); | |
| 399 } | |
| 400 } | |
| 401 %OptimizeFunctionOnNextCall(func); | |
| 402 try { | |
| 403 func(); | |
| 404 assertUnreachable(); | |
| 405 } catch (e) { | |
| 406 assertInstanceof(e, ReferenceError); | |
| 407 } | |
| 408 } | |
| 409 | |
| 410 function TestBlockContext(s) { | |
| 411 'use strict'; | |
| 412 var func = eval("(function baz(){ { " + s + "; (function() { x; }); } })"); | |
| 413 print("Testing:"); | |
| 414 print(func); | |
| 415 for (var i = 0; i < 5; ++i) { | |
| 416 print(i); | |
| 417 try { | |
| 418 func(); | |
| 419 assertUnreachable(); | |
| 420 } catch (e) { | |
| 421 assertInstanceof(e, ReferenceError); | |
| 422 } | |
| 423 } | |
| 424 print("optimize"); | |
| 425 %OptimizeFunctionOnNextCall(func); | |
| 426 try { | |
| 427 print("call"); | |
| 428 func(); | |
| 429 assertUnreachable(); | |
| 430 } catch (e) { | |
| 431 print("catch"); | |
| 432 assertInstanceof(e, ReferenceError); | |
| 433 } | |
| 434 } | |
| 435 | |
| 436 function TestAll(s) { | |
| 437 TestFunctionLocal(s); | |
| 438 TestFunctionContext(s); | |
| 439 TestBlockLocal(s); | |
| 440 TestBlockContext(s); | |
| 441 } | |
| 442 | |
| 443 // Use before initialization in declaration statement. | |
| 444 TestAll('let x = x + 1'); | |
| 445 TestAll('let x = x += 1'); | |
| 446 TestAll('let x = x++'); | |
| 447 TestAll('let x = ++x'); | |
| 448 TestAll('const x = x + 1'); | |
| 449 | |
| 450 // Use before initialization in prior statement. | |
| 451 TestAll('x + 1; let x;'); | |
| 452 TestAll('x = 1; let x;'); | |
| 453 TestAll('x += 1; let x;'); | |
| 454 TestAll('++x; let x;'); | |
| 455 TestAll('x++; let x;'); | |
| 456 TestAll('let y = x; const x = 1;'); | |
| 457 | |
| 458 | |
| 459 function f(x) { | |
| 460 let y = x + 42; | |
| 461 return y; | |
| 462 } | |
| 463 | |
| 464 function g(x) { | |
| 465 { | |
| 466 let y = x + 42; | |
| 467 return y; | |
| 468 } | |
| 469 } | |
| 470 | |
| 471 for (var i=0; i<10; i++) { | |
| 472 f(i); | |
| 473 g(i); | |
| 474 } | |
| 475 | |
| 476 %OptimizeFunctionOnNextCall(f); | |
| 477 %OptimizeFunctionOnNextCall(g); | |
| 478 | |
| 479 f(12); | |
| 480 g(12); | |
| 481 | |
| 482 assertTrue(%GetOptimizationStatus(f) != 2); | |
| 483 assertTrue(%GetOptimizationStatus(g) != 2); | |
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Chromium Code Reviews
Issue 1858943002:
Remove runtime flags for sloppy mode block scoping features (Closed)
Base URL: https://chromium.googlesource.com/v8/v8.git@master