blob: ac364f7830f2fd1a2a1aaca261c82591c87a5444 [file] [log] [blame]
kasperl@chromium.org86f77b72009-07-06 08:21:57 +000012009-07-06: Version 1.2.12
2
3 Added stack traces collection to Error objects accessible through
4 the e.stack property.
5
6 Changed RegExp parser to use a recursive data structure instead of
7 stack-based recursion.
8
9 Optimized Date object construction and string concatenation.
10
11 Improved performance of div, mod, and mul on ARM platforms.
12
13
kasperl@chromium.org2abc4502009-07-02 07:00:29 +0000142009-07-02: Version 1.2.11
15
16 Improved performance on IA-32 and ARM.
17
18 Fixed profiler sampler implementation on Mac OS X.
19
20 Changed the representation of global objects to improve
21 performance of adding a lot of new properties.
22
23
ager@chromium.org3e875802009-06-29 08:26:34 +0000242009-06-29: Version 1.2.10
25
26 Improved debugger support.
27
28 Fixed bug in exception message reporting (issue 390).
29
30 Improved overall performance.
31
32
ager@chromium.org5aa501c2009-06-23 07:57:28 +0000332009-06-23: Version 1.2.9
34
35 Improved math performance on ARM.
36
37 Fixed profiler name-inference bug.
38
39 Fixed handling of shared libraries in the profiler tick processor
40 scripts.
41
42 Fixed handling of tests that time out in the test scripts.
43
44 Fixed compilation on MacOS X version 10.4.
45
46 Fixed two bugs in the regular expression engine.
47
48 Fixed a bug in the string type inference.
49
50 Fixed a bug in the handling of 'constant function' properties.
51
52 Improved overall performance.
53
54
ager@chromium.orgeadaf222009-06-16 09:43:10 +0000552009-06-16: Version 1.2.8
56
57 Optimized math on ARM platforms.
58
59 Fixed two crash bugs in the handling of getters and setters.
60
61 Improved the debugger support by adding scope chain information.
62
63 Improved the profiler support by compressing log data transmitted
64 to clients.
65
66 Improved overall performance.
67
68
ager@chromium.orge2902be2009-06-08 12:21:35 +0000692009-06-08: Version 1.2.7
70
71 Improved debugger and profiler support.
72
73 Reduced compilation time by improving the handling of deferred
74 code.
75
76 Optimized interceptor accesses where the property is on the object
77 on which the interceptors is attached.
78
79 Fixed compilation problem on GCC 4.4 by changing the stack
80 alignment to 16 bytes.
81
82 Fixed handle creation to follow stric aliasing rules.
83
84 Fixed compilation on FreeBSD.
85
86 Introduced API for forcing the deletion of a property ignoring
87 interceptors and attributes.
88
89
sgjesse@chromium.org755c5b12009-05-29 11:04:38 +0000902009-05-29: Version 1.2.6
91
92 Added a histogram recording hit rates at different levels of the
93 compilation cache.
94
95 Added stack overflow check for the RegExp analysis phase. Previously a
96 very long regexp graph could overflow the stack with recursive calls.
97
98 Use a dynamic buffer when collecting log events in memory.
99
100 Added start/stop events to the profiler log.
101
102 Fixed infinite loop which could happen when setting a debug break while
103 executing a RegExp compiled to native code.
104
105 Fixed handling of lastIndexOf called with negative index (issue 351).
106
107 Fixed irregular crash in profiler test (issue 358).
108
109 Fixed compilation issues with some versions of gcc.
110
111
kasperl@chromium.org71affb52009-05-26 05:44:31 +00001122009-05-26: Version 1.2.5
113
114 Fixed bug in initial boundary check for Boyer-Moore text
115 search (issue 349).
116
117 Fixed compilation issues with MinGW and gcc 4.3+ and added support
118 for armv7 and cortex-a8 architectures. Patches by Lei Zhang and
119 Craig Schlenter.
120
121 Added a script cache to the debugger.
122
123 Optimized compilation performance by improving internal data
124 structures and avoiding expensive property load optimizations for
125 code that's infrequently executed.
126
127 Exposed the calling JavaScript context through the static API
128 function Context::GetCalling().
129
130
kasperl@chromium.orgb3284ad2009-05-18 06:12:45 +00001312009-05-18: Version 1.2.4
132
133 Improved performance of floating point number allocation for ARM
134 platforms.
135
136 Fixed crash when using the instanceof operator on functions with
137 number values in their prototype chain (issue 341).
138
139 Optimized virtual frame operations in the code generator to speed
140 up compilation time and allocated the frames in the zone.
141
142 Made the representation of virtual frames and jump targets in the
143 code generator much more compact.
144
145 Avoided linear search for non-locals in scope code when resolving
146 variables inside with and eval scopes.
147
148 Optimized lexical scanner by dealing with whitespace as part of
149 the token scanning instead of as a separate step before it.
150
151 Changed the scavenging collector so that promoted objects do not
152 reside in the old generation while their remembered set is being
153 swept for pointers into the young generation.
154
155 Fixed numeric overflow handling when compiling count operations.
156
157
ager@chromium.org9085a012009-05-11 19:22:57 +00001582009-05-11: Version 1.2.3
159
160 Fixed bug in reporting of out-of-memory situations.
161
162 Introduced hidden prototypes on certain builtin prototype objects
163 such as String.prototype to emulate JSC's behavior of restoring
164 the original function when deleting functions from those prototype
165 objects.
166
167 Fixed crash bug in the register allocator.
168
169
ager@chromium.org5ec48922009-05-05 07:25:34 +00001702009-05-04: Version 1.2.2
171
172 Fixed bug in array sorting for sparse arrays (issue 326).
173
174 Added support for adding a soname when building a shared library
175 on Linux (issue 151).
176
177 Fixed bug caused by morphing internal ASCII strings to external
178 two-byte strings. Slices over ASCII strings have to forward ASCII
179 checks to the underlying buffer string.
180
181 Allowed API call-as-function handlers to be called as
182 constructors.
183
184 Fixed a crash bug where an external string was disposed but a
185 slice of the external string survived as a symbol.
186
187
ager@chromium.org3a37e9b2009-04-27 09:26:21 +00001882009-04-27: Version 1.2.1
189
190 Added EcmaScript 5 JSON object.
191
192 Fix bug in preemption support on ARM.
193
194
ager@chromium.org65dad4b2009-04-23 08:48:43 +00001952009-04-23: Version 1.2.0
196
197 Optimized floating-point operations on ARM.
198
199 Added a number of extensions to the debugger API.
200
201 Changed the enumeration order for unsigned integer keys to always
202 be numerical order.
203
204 Added a "read" extension to the shell sample.
205
206 Added support for Array.prototype.reduce and
207 Array.prototype.reduceRight.
208
209 Added an option to the SCons build to control Microsoft Visual C++
210 link-time code generation.
211
212 Fixed a number of bugs (in particular issue 315, issue 316,
213 issue 317 and issue 318).
214
215
kasperl@chromium.org2d18d102009-04-15 13:27:32 +00002162009-04-15: Version 1.1.10
217
218 Fixed crash bug that occurred when loading a const variable in the
219 presence of eval.
220
221 Allowed using with and eval in registered extensions in debug mode
222 by fixing bogus assert.
223
224 Fixed the source position for function returns to enable the
225 debugger to break there.
226
227
kasperl@chromium.orgd1e3e722009-04-14 13:38:25 +00002282009-04-14: Version 1.1.9
229
230 Made the stack traversal code in the profiler robust by avoiding
231 to look into the heap.
232
233 Added name inferencing for anonymous functions to facilitate
234 debugging and profiling.
235
236 Re-enabled stats timers in the developer shell (d8).
237
238 Fixed issue 303 by avoiding to shortcut cons-symbols.
239
240
kasperl@chromium.orgacae3782009-04-11 09:17:08 +00002412009-04-11: Version 1.1.8
242
243 Changed test-debug/ThreadedDebugging to be non-flaky (issue 96).
244
ager@chromium.org65dad4b2009-04-23 08:48:43 +0000245 Fixed step-in handling for Function.prototype.apply and call in
kasperl@chromium.orgacae3782009-04-11 09:17:08 +0000246 the debugger (issue 269).
247
248 Fixed v8::Object::DeleteHiddenValue to not bail out when there
249 are no hidden properties.
250
ager@chromium.org65dad4b2009-04-23 08:48:43 +0000251 Added workaround for crash bug, where external symbol table
kasperl@chromium.orgacae3782009-04-11 09:17:08 +0000252 entries with deleted resources would lead to NPEs when looking
253 up in the symbol table.
254
255
kasperl@chromium.org8ccb0be2009-04-07 07:21:39 +00002562009-04-07: Version 1.1.7
257
258 Added support for easily importing additional environment
259 variables into the SCons build.
260
261 Optimized strict equality checks.
262
263 Fixed crash in indexed setters on objects without a corresponding
264 getter (issue 298).
265
266 Re-enabled script compilation cache.
267
268
ager@chromium.org8682a592009-04-01 10:47:14 +00002692009-04-01: Version 1.1.6
270
271 Reverted an unsafe code generator change.
272
273
ager@chromium.org71daaf62009-04-01 07:22:49 +00002742009-04-01: Version 1.1.5
275
276 Fixed bug that caused function literals to not be optimized as
277 much as other functions.
278
279 Improved profiler support.
280
281 Fixed a crash bug in connection with debugger unloading.
282
283 Fixed a crash bug in the code generator caused by losing the
284 information that a frame element was copied.
285
286 Fixed an exception propagation bug that could cause non-null
287 return values when exceptions were thrown.
288
289
ager@chromium.org41826e72009-03-30 13:30:57 +00002902009-03-30: Version 1.1.4
291
292 Optimized String.prototype.match.
293
294 Improved the stack information in profiles.
295
296 Fixed bug in ARM port making it possible to compile the runtime
297 system for thumb mode again.
298
299 Implemented a number of optimizations in the code generator.
300
301 Fixed a number of memory leaks in tests.
302
303 Fixed crash bug in connection with script source code and external
kasperl@chromium.org8ccb0be2009-04-07 07:21:39 +0000304 strings.
ager@chromium.org41826e72009-03-30 13:30:57 +0000305
306
kasperl@chromium.orgf5aa8372009-03-24 14:47:14 +00003072009-03-24: Version 1.1.3
308
309 Fixed assertion failures in compilation of loop conditions.
310
311 Removed STL dependency from developer shell (d8).
312
313 Added infrastructure for protecting the V8 heap from corruption
314 caused by memory modifications from the outside.
315
316
ager@chromium.orgbb29dc92009-03-24 13:25:23 +00003172009-03-24: Version 1.1.2
318
319 Improved frame merge code generated by the code generator.
320
321 Optimized String.prototype.replace.
322
323 Implemented __defineGetter__ and __defineSetter__ for properties
324 with integer keys on non-array objects.
325
326 Improved debugger and profiler support.
327
328 Fixed a number of portability issues to allow compilation for
329 smaller ARM devices.
330
331 Exposed object cloning through the API.
332
333 Implemented hidden properties. This is used to expose an identity
334 hash for objects through the API.
335
336 Implemented restarting of regular expressions if their input
337 string changes representation during preemption.
338
339 Fixed a code generator bug that could cause assignments in loops
340 to be ignored if using continue to break out of the loop (issue
341 284).
342
343
ager@chromium.org3a6061e2009-03-12 14:24:36 +00003442009-03-12: Version 1.1.1
345
346 Fixed an assertion in the new compiler to take stack overflow
347 exceptions into account.
348
349 Removed exception propagation code that could cause crashes.
350
351 Fixed minor bug in debugger line number computations.
352
353 8-byte align the C stack on Linux and Windows to speed up floating
354 point computations.
355
356
kasperl@chromium.org7be3c992009-03-12 07:19:55 +00003572009-03-12: Version 1.1.0
358
359 Improved code generation infrastructure by doing simple register
360 allocation and constant folding and propagation.
361
362 Optimized regular expression matching by avoiding to create
363 intermediate string arrays and by flattening nested array
364 representations of RegExp data.
365
366 Traverse a few stack frames when recording profiler samples to
367 include partial call graphs in the profiling output.
368
369 Added support for using OProfile to profile generated code.
370
371 Added remote debugging support to the D8 developer shell.
372
373 Optimized creation of nested literals like JSON objects.
374
375 Fixed a bug in garbage collecting unused maps and turned it on by
376 default (--collect-maps).
377
378 Added support for running tests under Valgrind.
379
380
kasperl@chromium.org061ef742009-02-27 12:16:20 +00003812009-02-27: Version 1.0.3
382
383 Optimized double-to-integer conversions in bit operations by using
384 SSE3 instructions if available.
385
386 Optimized initialization sequences that store to multiple
387 properties of the same object.
388
389 Changed the D8 debugger frontend to use JSON messages.
390
391 Force garbage collections when disposing contexts.
392
393 Align code objects at 32-byte boundaries.
394
395
ager@chromium.org381abbb2009-02-25 13:23:22 +00003962009-02-25: Version 1.0.2
397
398 Improved profiling support by performing simple call stack
399 sampling for ticks and by fixing a bug in the logging of code
400 addresses.
401
402 Fixed a number of debugger issues.
403
404 Optimized code that uses eval.
405
406 Fixed a couple of bugs in the regular expression engine.
407
408 Reduced the size of generated code for certain regular expressions.
409
410 Removed JSCRE completely.
411
412 Fixed issue where test could not be run if there was a dot in the
413 checkout path.
414
415
ager@chromium.org6f10e412009-02-13 10:11:16 +00004162009-02-13: Version 1.0.1
417
418 Fixed two crash-bugs in irregexp (issue 231 and 233).
419
420 Fixed a number of minor bugs (issue 87, 227 and 228).
421
422 Added support for morphing strings to external strings on demand
423 to avoid having to create copies in the embedding code.
424
425 Removed experimental support for external symbol callbacks.
426
427
iposva@chromium.org245aa852009-02-10 00:49:54 +00004282009-02-09: Version 1.0.0
429
430 Fixed crash-bug in the code generation for case independent 16 bit
431 backreferences.
ager@chromium.org6f10e412009-02-13 10:11:16 +0000432
iposva@chromium.org245aa852009-02-10 00:49:54 +0000433 Made shells more robust in the presence of string conversion
434 failures (issue 224).
ager@chromium.org6f10e412009-02-13 10:11:16 +0000435
iposva@chromium.org245aa852009-02-10 00:49:54 +0000436 Fixed a potential infinite loop when attempting to resolve
437 eval (issue 221).
ager@chromium.org6f10e412009-02-13 10:11:16 +0000438
iposva@chromium.org245aa852009-02-10 00:49:54 +0000439 Miscellaneous fixes to the new regular expression engine.
ager@chromium.org6f10e412009-02-13 10:11:16 +0000440
iposva@chromium.org245aa852009-02-10 00:49:54 +0000441 Reduced binary by stripping unneeded text from JavaScript library and
442 minifying some JavaScript files.
443
444
ager@chromium.orgddb913d2009-01-27 10:01:48 +00004452009-01-27: Version 0.4.9
446
447 Enabled new regular expression engine.
448
449 Made a number of changes to the debugger protocol.
450
451 Fixed a number of bugs in the preemption support.
452
453 Added -p option to the developer shell to run files in parallel
454 using preemption.
455
456 Fixed a number of minor bugs (including issues 176, 187, 189, 192,
457 193, 198 and 201).
458
459 Fixed a number of bugs in the serialization/deserialization
460 support for the ARM platform.
461
462
sgjesse@chromium.org715915b2009-01-19 16:08:47 +00004632009-01-19: Version 0.4.8.1
464
465 Minor patch to debugger support.
466
467
ager@chromium.org32912102009-01-16 10:38:43 +00004682009-01-16: Version 0.4.8
469
470 Fixed string length bug on ARM (issue 171).
471
472 Made most methods in the API const.
473
474 Optimized object literals by improving data locality.
475
476 Fixed bug that caused incomplete functions to be cached in case of
sgjesse@chromium.org715915b2009-01-19 16:08:47 +0000477 stack overflow exceptions.
ager@chromium.org32912102009-01-16 10:38:43 +0000478
479 Fixed bugs that caused catch variables and variables introduced by
sgjesse@chromium.org715915b2009-01-19 16:08:47 +0000480 eval to behave incorrectly when using accessors (issues 186, 190
481 and 191).
ager@chromium.org32912102009-01-16 10:38:43 +0000482
483
christian.plesner.hansen@gmail.com37abdec2009-01-06 14:43:28 +00004842009-01-06: Version 0.4.7
485
ager@chromium.org32912102009-01-16 10:38:43 +0000486 Minor bugfixes and optimizations.
christian.plesner.hansen@gmail.com37abdec2009-01-06 14:43:28 +0000487
ager@chromium.org32912102009-01-16 10:38:43 +0000488 Added command line debugger to D8 shell.
christian.plesner.hansen@gmail.com37abdec2009-01-06 14:43:28 +0000489
ager@chromium.org32912102009-01-16 10:38:43 +0000490 Fixed subtle bug that caused the wrong 'this' to be used when
491 calling a caught function in a catch clause.
christian.plesner.hansen@gmail.com37abdec2009-01-06 14:43:28 +0000492
ager@chromium.org32912102009-01-16 10:38:43 +0000493 Inline array loads within loops directly in the code instead of
494 always calling a stub.
christian.plesner.hansen@gmail.com37abdec2009-01-06 14:43:28 +0000495
ager@chromium.org32912102009-01-16 10:38:43 +0000496
ager@chromium.org8bb60582008-12-11 12:02:20 +00004972008-12-11: Version 0.4.6
498
499 Fixed exception reporting bug where certain exceptions were
500 incorrectly reported as uncaught.
501
502 Improved the memory allocation strategy used during compilation to
503 make running out of memory when compiling huge scripts less
504 likely.
505
506 Optimized String.replace by avoiding the construction of certain
507 sub strings.
508
509 Fixed bug in code generation for large switch statements on ARM.
510
511 Fixed bug that caused V8 to change the global object template
512 passed in by the user.
513
514 Changed the API for creating object groups used during garbage
515 collection. Entire object groups are now passed to V8 instead of
516 individual members of the groups.
517
ager@chromium.org32912102009-01-16 10:38:43 +0000518
ager@chromium.orga74f0da2008-12-03 16:05:52 +00005192008-12-03: Version 0.4.5
iposva@chromium.org96f667e2008-11-26 23:48:02 +0000520
ager@chromium.orga74f0da2008-12-03 16:05:52 +0000521 Added experimental API support for allocating V8 symbols as
522 external strings.
523
524 Fixed bugs in debugging support on ARM.
525
526 Changed eval implementation to correctly detect whether or not a
527 call to eval is aliased.
528
529 Fixed bug caused by a combination of the compilation cache and
530 dictionary probing in native code. The bug caused us to sometimes
531 call functions that had not yet been compiled.
532
533 Added platform support for FreeBSD.
534
535 Added support for building V8 on Windows with either the shared or
536 static version of MSVCRT
ager@chromium.org32912102009-01-16 10:38:43 +0000537
iposva@chromium.org96f667e2008-11-26 23:48:02 +0000538 Added the v8::jscre namespace around the jscre functions to avoid
539 link errors (duplicate symbols) when building Google Chrome.
540
ager@chromium.orga74f0da2008-12-03 16:05:52 +0000541 Added support for calling a JavaScript function with the current
542 debugger execution context as its argument to the debugger
543 interface.
544
545 Changed the type of names of counters from wchar_t to char.
546
547 Changed the Windows system call used to compute daylight savings
548 time. The system call that we used to use became four times
549 slower on WinXP SP3.
550
551 Added support in the d8 developer shell for memory-mapped counters
552 and added a stats-viewer tool.
553
554 Fixed bug in upper/lower case mappings (issue 149).
555
iposva@chromium.org96f667e2008-11-26 23:48:02 +0000556
ager@chromium.org3bf7b912008-11-17 09:09:45 +00005572008-11-17: Version 0.4.4
558
559 Reduced code size by using shorter instruction encoding when
560 possible.
561
562 Added a --help option to the shell sample and to the d8 shell.
563
564 Added visual studio project files for building the ARM simulator.
565
566 Fixed a number of ARM simulator issues.
567
568 Fixed bug in out-of-memory handling on ARM.
569
570 Implemented shell support for passing arguments to a script from
571 the command line.
572
573 Fixed bug in date code that made certain date functions return -0
574 instead of 0 for dates before the epoch.
575
576 Restricted applications of eval so it can only be used in the
577 context of the associated global object.
578
579 Treat byte-order marks as whitespace characters.
ager@chromium.org32912102009-01-16 10:38:43 +0000580
581
ager@chromium.org870a0b62008-11-04 11:43:05 +00005822008-11-04: Version 0.4.3
583
584 Added support for API accessors that prohibit overwriting by
585 accessors defined in JavaScript code by using __defineGetter__ and
586 __defineSetter__.
587
588 Improved handling of conditionals in test status files.
589
590 Introduced access control in propertyIsEnumerable.
591
592 Improved performance of some string operations by caching
593 information about the type of the string between operations.
594
595 Fixed bug in fast-case code for switch statements that only have
596 integer labels.
ager@chromium.org32912102009-01-16 10:38:43 +0000597
ager@chromium.org870a0b62008-11-04 11:43:05 +0000598
kasperl@chromium.org9bbf9682008-10-30 11:53:07 +00005992008-10-30: Version 0.4.2
600
601 Improved performance of Array.prototype.concat by moving the
602 implementation to C++ (issue 123).
603
604 Fixed heap growth policy to avoid growing old space to its maximum
605 capacity before doing a garbage collection and fixed issue that
606 would lead to artificial out of memory situations (issue 129).
607
608 Fixed Date.prototype.toLocaleDateString to return the date in the
609 same format as WebKit.
610
611 Added missing initialization checks to debugger API.
612
613 Added removing of unused maps during GC.
614
615
kasperl@chromium.org9fe21c62008-10-28 08:53:51 +00006162008-10-28: Version 0.4.1
617
618 Added caching of RegExp data in compilation cache.
619
620 Added Visual Studio project file for d8 shell.
621
622 Fixed function call performance regression introduced in version
623 0.4.0 when splitting the global object in two parts (issue 120).
624
625 Fixed issue 131 by checking for empty handles before throwing and
626 reporting exceptions.
627
628
kasperl@chromium.org5a8ca6c2008-10-23 13:57:19 +00006292008-10-23: Version 0.4.0
630
631 Split the global object into two parts: The state holding global
632 object and the global object proxy.
633
634 Fixed bug that affected the value of an assignment to an element
635 in certain cases (issue 116).
636
637 Added GetPropertyNames functionality (issue 33) and extra Date
638 functions (issue 77) to the API.
639
640 Changed WeakReferenceCallback to take a Persistent<Value> instead
641 of a Persistent<Object> (issue 101).
642
643 Fixed issues with message reporting for exceptions in try-finally
644 blocks (issues 73 and 75).
645
ager@chromium.org32912102009-01-16 10:38:43 +0000646 Optimized flattening of strings and string equality checking.
kasperl@chromium.org5a8ca6c2008-10-23 13:57:19 +0000647
648 Improved Boyer-Moore implementation for faster indexOf operations.
649
650 Added development shell (d8) which includes counters and
651 completion support.
652
653 Fixed problem with the receiver passed to functions called from
654 eval (issue 124).
655
656
ager@chromium.org7c537e22008-10-16 08:43:32 +00006572008-10-16: Version 0.3.5
658
659 Improved string hash-code distribution by excluding bit-field bits
660 from the hash-code.
661
662 Changed string search algorithm used in indexOf from KMP to
663 Boyer-Moore.
664
665 Improved the generated code for the instanceof operator.
666
667 Improved performance of slow-case string equality checks by
668 specializing the code based on the string representation.
669
670 Improve the handling of out-of-memory situations (issue 70).
671
672 Improved performance of strict equality checks.
673
674 Improved profiler output to make it easier to see anonymous
675 functions.
676
677 Improved performance of slow-case keyed loads.
678
679 Improved property access performance by allocating a number of
680 properties in the front object.
681
682 Changed the toString behavior on the built-in object constructors
683 to print [native code] instead of the actual source. Some web
684 applications do not like constructors with complex toString
685 results.
ager@chromium.org32912102009-01-16 10:38:43 +0000686
ager@chromium.org7c537e22008-10-16 08:43:32 +0000687
kasperl@chromium.org41044eb2008-10-06 08:24:46 +00006882008-10-06: Version 0.3.4
689
690 Changed Array.prototype.sort to use quick sort.
691
692 Fixed code generation issue where leaving a finally block with
693 break or continue would accumulate elements on the expression
694 stack (issue 86).
695
696 Made sure that the name accessor on functions returns the expected
697 names for builtin JavaScript functions and C++ callback functions.
698
699 Added fast case code for extending the property storage array of
700 JavaScript objects.
701
702 Ported switch statement optimizations introduced in version 0.3.3
703 to the ARM code generator.
704
705 Allowed GCC to use strict-aliasing rules when compiling.
706
707 Improved performance of arguments object allocation by taking care
708 of arguments adaptor frames in the generated code.
709
710 Updated the V8 benchmark suite to version 2.
711
712
ager@chromium.org236ad962008-09-25 09:45:57 +00007132008-09-25: Version 0.3.3
714
715 Improved handling of relocation information to enable more
716 peep-hole optimizations.
717
718 Optimized switch statements where all labels are constant small
719 integers.
720
721 Optimized String.prototype.indexOf for common cases.
722
723 Fixed more build issues (issue 80).
724
725 Fixed a couple of profiler issues.
726
727 Fixed bug where the body of a function created using the Function
728 constructor was not allowed to end with a single-line comment
729 (issue 85).
730
731 Improved handling of object literals by canonicalizing object
732 literal maps. This will allow JSON objects with the same set of
733 properties to share the same map making inline caching work better
734 for JSON objects.
ager@chromium.org32912102009-01-16 10:38:43 +0000735
ager@chromium.org236ad962008-09-25 09:45:57 +0000736
kasperl@chromium.orgb9123622008-09-17 14:05:56 +00007372008-09-17: Version 0.3.2
738
739 Generalized the EvalCache into a CompilationCache and enabled it
740 for scripts too. The current strategy is to retire all entries
741 whenever a mark-sweep collection is started.
742
743 Fixed bug where switch statements containing only a default case
744 would lead to an unbalanced stack (issue 69).
745
746 Fixed bug that made access to the function in a named function
747 expression impossible in certain situations (issue 24).
748
749 Fixed even more build issues.
750
751 Optimized calling conventions on ARM. The conventions on ARM and
752 IA-32 now match.
753
754 Removed static initializers for flags and counters.
755
756 Improved inline caching behavior for uncommon cases where lazily
757 loading Date and RegExp code could force certain code paths go
758 megamorphic.
759
760 Removed arguments adaption for builtins written in C++. This
761 makes Array.prototype.push and Array.prototype.pop slightly
762 faster.
763
764
ager@chromium.org9258b6b2008-09-11 09:11:10 +00007652008-09-11: Version 0.3.1
766
767 Fixed a number of build issues.
768
769 Fixed problem with missing I-cache flusing on ARM.
770
771 Changed space layout in memory management by splitting up
772 code space into old data space and code space.
773
774 Added utf-8 conversion support to the API (issue 57).
775
776 Optimized repeated calls to eval with the same strings. These
777 repeated calls are common in web applications.
778
779 Added Xcode project file.
780
781 Optimized a couple of Array operation.
782
783 Fixed parser bug by checking for end-of-string when parsing break
784 and continue (issue 35).
785
786 Fixed problem where asian characters were not categorized as
787 letters.
788
789 Fixed bug that disallowed calling functions fetched from an array
790 using a string as an array index (issue 32).
791
792 Fixed bug where the internal field count on object templates were
793 sometimes ignored (issue 54).
794
795 Added -f option to the shell sample for compatibility with other
796 engines (issue 18).
797
798 Added source info to TryCatches in the API.
799
800 Fixed problem where the seed for the random number generator was
801 clipped in a double to unsigned int conversion.
802
803 Fixed bug where cons string symbols were sometimes converted to
804 non-symbol flat strings during GC.
805
806 Fixed bug in error reporting when attempting to convert null to an
807 object.
ager@chromium.org32912102009-01-16 10:38:43 +0000808
809
ager@chromium.orgc27e4e72008-09-04 13:52:27 +00008102008-09-04: Version 0.3.0
811
812 Added support for running tests on the ARM simulator.
813
814 Fixed bug in the 'in' operator where negative indices were not
815 treated correctly.
816
817 Fixed build issues on gcc-4.3.1.
818
819 Changed Date.prototype.toLocaleTimeString to not print the
820 timezone part of the time.
821
822 Renamed debug.h to v8-debug.h to reduce the risk of name conflicts
823 with user code.
824
825
v8.team.kasperl727e9952008-09-02 14:56:44 +00008262008-09-02: Version 0.2.5
827
828 Renamed the top level directory 'public' to 'include'.
829
830 Added 'env' option to the SCons build scripts to support
831 overriding the ENV part of the build environment. This is mostly
832 to support Windows builds in cases where SCons cannot find the
833 correct paths to the Windows SDK, as these paths cannot be passed
834 through shell environment variables.
835
836 Enabled "Buffer Security Check" on for the Windows SCons build and
837 added the linker option /OPT:ICF as an optimization.
838
839 Added the V8 benchmark suite to the repository.
840
841
mads.s.ager@gmail.com9a4089a2008-09-01 08:55:01 +00008422008-09-01: Version 0.2.4
843
844 Included mjsunit JavaScript test suite and C++ unit tests.
845
846 Changed the shell sample to not print the result of executing a
847 script provided on the command line.
848
849 Fixed issue when building samples on Windows using a shared V8
850 library. Added visibility option on Linux build which makes the
851 generated library 18% smaller.
852
853 Changed build system to accept multiple build modes in one build
854 and generate separate objects, libraries and executables for each
855 mode.
856
857 Removed deferred negation optimization (a * -b => -(a * b)) since
858 this visibly changes operand conversion order.
859
860 Improved parsing performance by introducing stack guard in
861 preparsing. Without a stack guard preparsing always bails out
862 with stack overflow.
863
864 Changed shell sample to take flags directly from the command-line.
865 Added API call that implements this.
866
867 Added load, quit and version functions to the shell sample so it's
868 easier to run benchmarks and tests.
869
870 Fixed issue with building samples and cctests on 64-bit machines.
871
872 Fixed bug in the runtime system where the prototype chain was not
873 always searched for a setter when setting a property that does not
874 exist locally.
ager@chromium.org32912102009-01-16 10:38:43 +0000875
mads.s.ager@gmail.com9a4089a2008-09-01 08:55:01 +0000876
mads.s.agercbaa0602008-08-14 13:41:48 +00008772008-08-14: Version 0.2.3
878
879 Improved performance of garbage collection by moving the
880 function that updates pointers during compacting collection
881 into the updating visitor. This gives the compiler a better
882 chance to inline and avoid a function call per (potential)
883 pointer.
884
885 Extended the shell sample with a --runtime-flags option.
886
887 Added Visual Studio project files for the shell.cc and
888 process.cc samples.
889
890
8912008-08-13: Version 0.2.2
mads.s.ager31e71382008-08-13 09:32:07 +0000892
893 Improved performance of garbage collection by changing the way
894 we use the marking stack in the event of stack overflow during
895 full garbage collection and by changing the way we mark roots.
896
897 Cleaned up ARM version by removing top of stack caching and by
898 introducing push/pop elimination.
899
900 Cleaned up the way runtime functions are called to allow
901 runtime calls with no arguments.
902
903 Changed Windows build options to make sure that exceptions are
904 disabled and that optimization flags are enabled.
905
906 Added first version of Visual Studio project files.
907
908
mads.s.agercbaa0602008-08-14 13:41:48 +00009092008-08-06: Version 0.2.1
mads.s.ager@gmail.com769cc962008-08-06 10:02:49 +0000910
911 Improved performance of unary addition by avoiding runtime calls.
912
913 Fixed the handling of '>' and '<=' to use right-to-left conversion
914 and left-to-right evaluation as specified by ECMA-262.
915
916 Fixed a branch elimination bug on the ARM platform where incorrect
917 code was generated because of overly aggressive branch
918 elimination.
919
920 Improved performance of code that repeatedly assigns the same
921 function to the same property of different objects with the same
922 map.
923
924 Untangled DEBUG and ENABLE_DISASSEMBLER defines. The disassembler
925 no longer expects DEBUG to be defined.
926
927 Added platform-nullos.cc to serve as the basis for new platform
928 implementations.
929
mads.s.ager31e71382008-08-13 09:32:07 +0000930
mads.s.agercbaa0602008-08-14 13:41:48 +00009312008-07-30: Version 0.2.0
kasper.lund7276f142008-07-30 08:49:36 +0000932
933 Changed all text files to have native svn:eol-style.
934
935 Added a few samples and support for building them. The samples
936 include a simple shell that can be used to benchmark and test V8.
937
938 Changed V8::GetVersion to return the version as a string.
939
940 Added source for lazily loaded scripts to snapshots and made
941 serialization non-destructive.
942
943 Improved ARM support by fixing the write barrier code to use
944 aligned loads and stores and by removing premature locals
945 optimization that relied on broken support for callee-saved
946 registers (removed).
947
948 Refactored the code for marking live objects during garbage
949 collection and the code for allocating objects in paged
950 spaces. Introduced an abstraction for the map word of a heap-
951 allocated object and changed the memory allocator to allocate
952 executable memory only for spaces that may contain code objects.
953
954 Moved StringBuilder to utils.h and ScopedLock to platform.h, where
955 they can be used by debugging and logging modules. Added
956 thread-safe message queues for dealing with debugger events.
957
958 Fixed the source code reported by toString for certain builtin
959 empty functions and made sure that the prototype property of a
960 function is enumerable.
961
962 Improved performance of converting values to condition flags in
963 generated code.
964
965 Merged disassembler-{arch} files.
966
967
mads.s.agercbaa0602008-08-14 13:41:48 +00009682008-07-28: Version 0.1.4
kasper.lundaf4734f2008-07-28 12:50:18 +0000969
970 Added support for storing JavaScript stack traces in a stack
971 allocated buffer to make it visible in shallow core dumps.
972 Controlled by the --preallocate-message-memory flag which is
973 disabled by default.
974
975
mads.s.agercbaa0602008-08-14 13:41:48 +00009762008-07-25: Version 0.1.3
kasper.lund44510672008-07-25 07:37:58 +0000977
978 Fixed bug in JSObject::GetPropertyAttributePostInterceptor where
979 map transitions would count as properties.
980
981 Allowed aliased eval invocations by treating them as evals in the
982 global context. This may change in the future.
983
984 Added support for accessing the last entered context through the
985 API and renamed Context::Current to Context::GetCurrent and
986 Context::GetSecurityContext to Context::GetCurrentSecurityContext.
987
988 Fixed bug in the debugger that would cause the debugger scripts to
989 be recursively loaded and changed all disabling of interrupts to
990 be block-structured.
991
992 Made snapshot data read-only to allow it to be more easily shared
993 across multiple users of V8 when linked as a shared library.
994
995
mads.s.agercbaa0602008-08-14 13:41:48 +00009962008-07-16: Version 0.1.2
kasper.lund212ac232008-07-16 07:07:30 +0000997
998 Fixed building on Mac OS X by recognizing i386 and friends as
999 IA-32 platforms.
1000
1001 Added propagation of stack overflow exceptions that occur while
1002 compiling nested functions.
1003
1004 Improved debugger with support for recursive break points and
1005 handling of exceptions that occur in the debugger JavaScript code.
1006
1007 Renamed GetInternal to GetInternalField and SetInternal to
1008 SetInternalField in the API and moved InternalFieldCount and
1009 SetInternalFieldCount from FunctionTemplate to ObjectTemplate.
1010
1011
mads.s.agercbaa0602008-08-14 13:41:48 +000010122008-07-09: Version 0.1.1
kasper.lundbd3ec4e2008-07-09 11:06:54 +00001013
1014 Fixed bug in stack overflow check code for IA-32 targets where a
1015 non-tagged value in register eax was pushed to the stack.
1016
1017 Fixed potential quadratic behavior when converting strings to
1018 numbers.
1019
1020 Fixed bug where the return value from Object::SetProperty could
1021 end up being the property holder instead of the written value.
1022
1023 Improved debugger support by allowing nested break points and by
1024 dealing with stack-overflows when compiling functions before
1025 setting break points in them.
1026
1027
mads.s.agercbaa0602008-08-14 13:41:48 +000010282008-07-03: Version 0.1.0
christian.plesner.hansen43d26ec2008-07-03 15:10:15 +00001029
kasper.lundbd3ec4e2008-07-09 11:06:54 +00001030 Initial export.
christian.plesner.hansen43d26ec2008-07-03 15:10:15 +00001031