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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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