1 2014-02-10: Version 3.24.35
3 Fix inconsistencies wrt whitespaces (issue 3109).
5 Performance and stability improvements on all platforms.
8 2014-02-07: Version 3.24.34
10 Performance and stability improvements on all platforms.
13 2014-02-06: Version 3.24.33
15 Allow externalizing strings in old pointer space (Chromium issue
18 Performance and stability improvements on all platforms.
21 2014-02-05: Version 3.24.32
23 Add Box object to heap profiler.
25 Check the offset argument of TypedArray.set for fitting into Smi
26 (Chromium issue 340125).
28 Performance and stability improvements on all platforms.
31 2014-02-04: Version 3.24.31
33 Fix short-circuiting logical and/or in HOptimizedGraphBuilder (Chromium
36 Elements field of newly allocated JSArray could be left uninitialized in
37 some cases (fast literal case) (Chromium issue 340124).
39 Re-enable escape analysis.
41 Performance and stability improvements on all platforms.
44 2014-02-03: Version 3.24.30
46 Performance and stability improvements on all platforms.
49 2014-02-01: Version 3.24.29
51 Performance and stability improvements on all platforms.
54 2014-01-31: Version 3.24.28
56 Don't crash in Array.join() if the resulting string exceeds the max
57 string length (Chromium issue 336820).
59 Implements ES6 String.prototype.normalize method (issue 2943).
61 Performance and stability improvements on all platforms.
64 2014-01-30: Version 3.24.27
66 Performance and stability improvements on all platforms.
69 2014-01-29: Version 3.24.26
71 ES6: Map and Set needs to normalize minus zero (issue 3069).
73 Make `String.prototype.{starts,ends}With` throw when passing a regular
74 expression (issue 3070).
76 Performance and stability improvements on all platforms.
79 2014-01-28: Version 3.24.25
81 Performance and stability improvements on all platforms.
84 2014-01-27: Version 3.24.24
86 MIPS: Reduce the stack requirements of GetNoCodeAgeSequence (issue
89 Delete v8_shell target now that chrome uses d8 (Chromium issue 331585).
91 ARM: Reduce the stack requirements of GetNoCodeAgeSequence (issue 3111).
93 Performance and stability improvements on all platforms.
96 2014-01-24: Version 3.24.23
98 Performance and stability improvements on all platforms.
101 2014-01-23: Version 3.24.22
103 Fix compilation on x64 architectures (issue 3110).
105 Ensure we don't overwrite transitions in SetPropertyIgnoreAttributes
106 (Chromium issue 326155).
108 ES6: Implement Object.setPrototypeOf (issue 2675).
110 Fixed floor-of-div optimization (Chromium issue 334708).
112 Performance and stability improvements on all platforms.
115 2014-01-22: Version 3.24.21
117 Performance and stability improvements on all platforms.
120 2014-01-21: Version 3.24.20
122 ES6: Implement Object.setPrototypeOf (issue 2675).
124 Performance and stability improvements on all platforms.
127 2014-01-20: Version 3.24.19
129 Introduce a setting to control the toolset for which d8 is compiled
132 Performance and stability improvements on all platforms.
135 2014-01-17: Version 3.24.18
137 Performance and stability improvements on all platforms.
140 2014-01-16: Version 3.24.17
142 Make cells pointing to JSObjects weak in optimized code (issue 2073).
144 Performance and stability improvements on all platforms.
147 2014-01-15: Version 3.24.16
149 Annotate mapped memory regions for LeakSanitizer (Chromium issue
152 Turn Runtime_MigrateInstance into Runtime_TryMigrateInstance (Chromium
155 Performance and stability improvements on all platforms.
158 2014-01-14: Version 3.24.15
160 Introduce an API mirroring the gc extension.
162 Performance and stability improvements on all platforms.
165 2014-01-10: Version 3.24.14
167 ES6: Add Object.getOwnPropertySymbols (issue 3049).
169 Performance and stability improvements on all platforms.
172 2014-01-09: Version 3.24.13
174 Add Isolate parameter to HandleScope::NumberOfHandles (Chromium issue
177 Removed v8::AssertNoGCScope.
179 Performance and stability improvements on all platforms.
182 2014-01-08: Version 3.24.12
184 Correctly handle instances without elements in polymorphic keyed
185 load/store (Chromium issue 331416).
187 Fix selection of popular pages in store buffer (Chromium issue 331444).
189 Prepare removal of ObjectTemplate::New without Isolate parameter
190 (Chromium issue 324225).
192 Performance and stability improvements on all platforms.
195 2014-01-07: Version 3.24.11
197 Remove generated makefiles on linux when running gyp_v8
198 (Chromium issue 331475)
200 Fix building d8 with readline support due to API changes
202 Performance and stability improvements on all platforms.
205 2014-01-03: Version 3.24.10
207 Reland r18383: More API cleanup (Chromium issue 324225).
209 MIPS: Fix loading of global object in LWrapReceiver (Chromium issue
212 Performance and stability improvements on all platforms.
215 2014-01-02: Version 3.24.9
217 Performance and stability improvements on all platforms.
220 2013-12-30: Version 3.24.8
222 ARM: fix loading of global object in LWrapReceiver (Chromium issue
225 Fix a race between concurrent recompilation and OSR (Chromium issue
228 Turn off concurrent sweeping (issue 3071).
230 Performance and stability improvements on all platforms.
233 2013-12-23: Version 3.24.7
235 Fix small spec violation in String.prototype.split (issue 3026).
237 Correctly resolve forcibly context allocated parameters in debug-
238 evaluate (Chromium issue 325676).
240 Introduce Function::GetBoundFunction.
242 Performance and stability improvements on all platforms.
245 2013-12-20: Version 3.24.6
247 Performance and stability improvements on all platforms.
250 2013-12-19: Version 3.24.5
252 Performance and stability improvements on all platforms.
255 2013-12-18: Version 3.24.4
257 Removed all stuff marked as V8_DEPRECATED.
259 Performance and stability improvements on all platforms.
262 2013-12-17: Version 3.24.3
264 Performance and stability improvements on all platforms.
267 2013-12-17: Version 3.24.2
269 Flush instruction cache for deserialized code objects.
271 Performance and stability improvements on all platforms.
274 2013-12-13: Version 3.24.1
276 Fix polymorphic inlined calls with migrating prototypes.
278 Fixed global object leak caused by overwriting the global receiver (the
279 global proxy) in the global object with the global object itself
280 (Chromium issue 324812).
282 Initialize Date parse cache with SMI instead of double to workaround
283 sharing mutable heap numbers in snapshot (Chromium issue 280531).
285 Switch armv7 setting to arm_version==7 in v8 gyp files (Chromium issue
288 Performance and stability improvements on all platforms.
291 2013-12-09: Version 3.24.0
293 Performance and stability improvements on all platforms.
296 2013-12-04: Version 3.23.18
298 Performance and stability improvements on all platforms.
301 2013-12-03: Version 3.23.17
303 Performance and stability improvements on all platforms.
306 2013-12-02: Version 3.23.16
308 Array builtins need to be prevented from changing frozen objects, and
309 changing structure on sealed objects (Chromium issue 299979).
311 Performance and stability improvements on all platforms.
314 2013-11-29: Version 3.23.15
316 Fix context register allocation in LTransitionElementsKind
317 (Chromium issue 324306).
319 Fix bug in inlining Function.apply (Chromium issue 323942).
321 Ensure that length is Smi in TypedArrayFromArrayLike constructor
322 (Chromium issue 324028).
324 Performance and stability improvements on all platforms.
327 2013-11-28: Version 3.23.14
329 Shorten autogenerated error message (issue 3019).
331 Performance and stability improvements on all platforms.
334 2013-11-27: Version 3.23.13
336 Increase precision for base conversion for large integers (issue 3025).
338 Flatten cons string for single character substrings (Chromium issue
341 Performance and stability improvements on all platforms.
344 2013-11-26: Version 3.23.12
346 Performance and stability improvements on all platforms.
349 2013-11-25: Version 3.23.11
351 Deprecate old versions of Isolate::SetData and GetData.
353 Performance and stability improvements on all platforms.
356 2013-11-22: Version 3.23.10
358 Remove preemption thread and API.
361 Performance and stability improvements on all platforms.
364 2013-11-21: Version 3.23.9
366 API: Change AdjustAmountOfExternalAllocatedMemory calls to use int64_t
369 Remove deprecated v8::SetResourceConstraints without Isolate parameter.
371 Remove deprecated v8-defaults.h and defaults.cc.
372 (Chromium issue 312241)
374 Make it possible to add more than one piece of embedder data to
376 (Chromium issue 317398)
378 Performance and stability improvements on all platforms.
381 2013-11-20: Version 3.23.8
383 Fixed crashes exposed though fuzzing.
384 (Chromium issue 320948)
386 Deprecated v8::External::New without Isolate parameter.
388 Made number of available threads isolate-dependent and exposed it to
392 Performance and stability improvements on all platforms.
395 2013-11-19: Version 3.23.7
397 Bugfix: dependent code field in AllocationSite was keeping code objects
398 alive even after context death.
399 (Chromium issue 320532)
401 Fixed data view accessors to throw execptions on offsets bigger than
405 Performance and stability improvements on all platforms.
408 2013-11-18: Version 3.23.6
410 Limit size of dehoistable array indices.
411 (Chromium issues 319835, 319860)
413 Limit the size for typed arrays to MaxSmi.
414 (Chromium issue 319722)
416 Performance and stability improvements on all platforms.
419 2013-11-15: Version 3.23.5
421 Fixed missing type feedback check for Generic*String addition.
422 (Chromium issue 318671)
424 Fixed duplicate check in DependentCode::Insert.
425 (Chromium issue 318454)
427 Performance and stability improvements on all platforms.
430 2013-11-14: Version 3.23.4
432 Fixed overflow in TypedArray initialization function.
433 (Chromium issue 319120)
435 Performance and stability improvements on all platforms.
438 2013-11-13: Version 3.23.3
440 Fixed compilation with GCC 4.8.
443 Added explicit Isolate parameter to External::New.
444 (Chromium issue 266838)
446 Performance and stability improvements on all platforms.
449 2013-11-12: Version 3.23.2
451 Fixed --extra-code flag for snapshot creation.
454 Fixed error message wording when instanceof throws.
455 (Chromium issue 82797, issue 1593)
457 Performance and stability improvements on all platforms.
460 2013-11-08: Version 3.23.1
462 Made HCapturedObjects non-deletable for DCE. (issue 2987)
464 Use a fixed random seed per default. (issue 1880, 2885)
466 Fixed y-umlaut to uppercase. (issue 2984)
468 Performance and stability improvements on all platforms.
471 2013-11-06: Version 3.23.0
473 Fixed loading message from an Error object. (Chromium issue 306220)
475 Made Object.freeze/seal/preventExtensions observable. (issue 2975, 2941)
477 Made snapshots reproducible. (issue 2885)
479 Added missing negative dictionary lookup to NonexistentHandlerFrontend.
482 Performance and stability improvements on all platforms.
485 2013-10-31: Version 3.22.24
487 Fixed uint32-to-smi conversion in Lithium.
488 (Chromium issue 309623)
490 Performance and stability improvements on all platforms.
493 2013-10-28: Version 3.22.23
495 Renamed deprecated __attribute__((no_address_safety_analysis)) to
496 __attribute__((no_sanitize_address)) (Chromium issue 311283)
498 Defined DEBUG for v8_optimized_debug=2
500 Performance and stability improvements on all platforms.
503 2013-10-25: Version 3.22.22
505 Record allocation stack traces. (Chromium issue 277984,v8:2949)
507 Performance and stability improvements on all platforms.
510 2013-10-24: Version 3.22.21
512 Performance and stability improvements on all platforms.
515 2013-10-24: Version 3.22.20
517 Made Array.prototype.pop throw if the last element is not configurable.
519 Fixed HObjectAccess for loads from migrating prototypes.
520 (Chromium issue 305309)
522 Enabled preaging of code objects when --optimize-for-size.
523 (Chromium issue 280984)
525 Exposed v8::Function::GetDisplayName to public API.
526 (Chromium issue 17356)
528 Performance and stability improvements on all platforms.
531 2013-10-23: Version 3.22.19
533 Fix materialization of captured objects with field tracking.
534 (Chromium issue 298990)
536 Performance and stability improvements on all platforms.
539 2013-10-22: Version 3.22.18
541 Add tool to visualize machine code/lithium.
543 Handle misaligned loads and stores in load elimination. Do not track
544 misaligned loads and be conservative about invalidating misaligned
547 Performance and stability improvements on all platforms.
550 2013-10-21: Version 3.22.17
552 Harmony: Implement Math.trunc and Math.sign. (issue 2938)
554 Performance and stability improvements on all platforms.
557 2013-10-21: Version 3.22.16
559 Performance and stability improvements on all platforms.
562 2013-10-18: Version 3.22.15
564 Enabled calling the SetReference* & SetObjectGroupId functions with a
565 Persistent<SubclassOfValue>.
567 Performance and stability improvements on all platforms.
570 2013-10-17: Version 3.22.14
572 Performance and stability improvements on all platforms.
575 2013-10-16: Version 3.22.13
577 Do not look up ArrayBuffer on global object in typed array constructor.
580 Performance and stability improvements on all platforms.
583 2013-10-15: Version 3.22.12
585 Added histograms to track fraction of heap spaces and percentage of
586 generated crankshaft code.
588 Moved v8_optimized_debug default value to standalone.gypi.
590 Track JS allocations as they arrive with no affection on performance
591 when tracking is switched off (Chromium issue 277984).
593 Performance and stability improvements on all platforms.
596 2013-10-14: Version 3.22.11
598 Performance and stability improvements on all platforms.
601 2013-10-11: Version 3.22.10
603 Fixed timezone issues with date-time/parse-* tests.
604 (Chromium issue 2919)
606 Added column getter to CpuProfileNode (Chromium issue 302537)
608 Performance and stability improvements on all platforms.
611 2013-10-10: Version 3.22.9
613 Ensure only whitelisted stubs have sse2 versions in the snapshot.
614 (fix for chromium 304565)
616 Implement ArrayBuffer.isView.
618 Performance and stability improvements on all platforms.
621 2013-10-04: Version 3.22.8
623 Performance and stability improvements on all platforms.
626 2013-10-03: Version 3.22.7
628 Debug: Allow stepping into on a given call frame
629 (Chromium issue 296963).
631 Always use timeGetTime() for TimeTicks::Now() on Windows
632 (Chromium issue 288924).
634 Performance and stability improvements on all platforms.
637 2013-10-02: Version 3.22.6
639 Performance and stability improvements on all platforms.
642 2013-10-01: Version 3.22.5
644 Disabled externalization of sliced/cons strings in old pointer space
645 (Chromium issue 276357).
647 Turned on handle zapping for release builds
649 Performance and stability improvements on all platforms.
652 2013-09-30: Version 3.22.4
654 Function::Call and Object::CallAsFunction APIs should allow v8::Value as
655 a receiver (issue 2915).
657 Removed unnecessary mutex (Chromium issue 291236).
659 Removed ArrayBufferView::BaseAddress method.
661 Performance and stability improvements on all platforms.
664 2013-09-27: Version 3.22.3
666 Added methods to enable configuration of ResourceConstraints based on
667 limits derived at runtime.
668 (Chromium issue 292928)
670 Added -optimize-for-size flag to optimize for memory size (will be used
671 by pre-aging CL), and removed the is_memory_constrained
673 (Chromium issue 292928)
675 Performance and stability improvements on all platforms.
678 2013-09-26: Version 3.22.2
680 Performance and stability improvements on all platforms.
683 2013-09-25: Version 3.22.1
685 Sped up creating typed arrays from array-like objects.
686 (Chromium issue 270507)
688 Performance and stability improvements on all platforms.
691 2013-09-23: Version 3.22.0
693 LiveEdit to mark more closure functions for re-instantiation when scope
697 Made bounds check elimination iterative instead of recursive.
698 (Chromium issue 289706)
700 Turned on i18n support by default.
702 Set the proper instance-type on HAllocate in BuildFastLiteral.
703 (Chromium issue 284577)
705 Performance and stability improvements on all platforms.
708 2013-09-18: Version 3.21.17
710 Implemented local load/store elimination on basic blocks.
712 Added mutex when accessing concurrent recompilation output queue.
713 (Chromium issue 291236)
715 Don't lookup the cache for the result of Function::New.
716 (Chromium issue 272579)
718 Tweaked HConstant::EmitAtUses() to eliminate useless constant
720 (Chromium issue 2881)
722 Performance and stability improvements on all platforms.
725 2013-09-16: Version 3.21.16
727 Every place where AllocationMemento is initialized with an
728 AllocationSite is now checked to be sure a valid Site goes in. This is
729 temporary code to diagnose chromium bug 284577.
731 Performance and stability improvements on all platforms.
734 2013-09-13: Version 3.21.15
736 Non-JSObject heap objects are now handled using slow-path IC stub
738 (Chromium issue 280632)
740 i18n Javascript code added to the snapshot.
743 Performance and stability improvements on all platforms.
745 2013-09-12: Version 3.21.14
747 Added access check for observed objects.
750 Cleaned up v8::ArrayBuffer::Allocator interface.
753 Performance and stability improvements on all platforms.
755 2013-09-11: Version 3.21.13
757 Added a ResourceConstraint for the embedder to specify that V8 is
758 running on a memory constrained device.
759 (Chromium issue 280984)
761 Removed HandleScope default ctor.
762 (Chromium issue 236173)
764 Enabled escape analysis for Hydrogen.
766 Correctly stringified mixed encoding indirect strings.
767 (Chromium issue 287476)
769 Performance and stability improvements on all platforms.
772 2013-09-09: Version 3.21.12
774 Fixed bitwise negation on x64.
775 (Chromium issue 285355)
777 Dropped GetCurrentThreadId() and TerminateExecution(int) from
780 Fixed polymorphic INTERCEPTOR StoreICs on ARM/MIPS.
781 (Chromium issue 284998)
783 Added check if timeout has expired after processing each sample.
786 Removed obsolete global V8::has_been_fooed flags.
789 Performance and stability improvements on all platforms.
792 2013-09-05: Version 3.21.11
794 Performance and stability improvements on all platforms.
797 2013-09-04: Version 3.21.10
799 Fixed Eternal::IsEmpty logic (issue 2870).
801 Performance and stability improvements on all platforms.
804 2013-09-03: Version 3.21.9
806 Deprecated Persistent functions which were marked to be deprecated.
808 Allowed uncacheable identifiers to go generic (issue 2867).
810 Performance and stability improvements on all platforms.
813 2013-09-02: Version 3.21.8
815 Added scriptId to StackTrace frames (issue 2865).
817 Performance and stability improvements on all platforms.
820 2013-08-30: Version 3.21.7
822 Fixed casts of eternal handles.
824 Turned on global handle zapping.
826 Always visit branches during HGraph building (Chromium issue 280333).
828 Profiler changes: removed deprecated API, support higher sampling
831 Performance and stability improvements on all platforms.
834 2013-08-29: Version 3.21.6
836 Fixed inlined 'throw' statements interfering with live range
837 computation. (issue 2843)
839 Performance and stability improvements on all platforms.
842 2013-08-28: Version 3.21.5
844 Fixed compilation with recent MinGW64 versions. (issue 2300)
846 Added RemovePrototype to FunctionTemplate. (Chromium issue 272440)
848 Performance and stability improvements on all platforms.
851 2013-08-26: Version 3.21.4
853 Lowered kInitialMaxFastElementArray constant to 95K (issue 2790).
855 Use signals for cpu profiling on Mac OS X (issue 2814).
857 Deprecated CpuProfileNode::GetSelfSamplesCount (Chromium issue 267595).
859 Added support for higher CPU profiler sampling rate on posix systems
862 Worked around 'inlining failed' build error with older GCC 4.x releases.
864 Added source map support to tick processor.
866 Stability improvements on all platforms.
869 2013-08-23: Version 3.21.3
871 Temporarily disabled optimization for StringWrappers to use native
872 valueOf. (issue 2855)
874 Fixed crash on function declarations in eval inside non-trivial local
877 Rewrote SamplingCircularQueue. (issue 2814)
879 Fixed hidden properties on object with frozen prototype. (issue 2829)
881 Fix deoptimization bug. (Chromium issue 274164)
883 Stability improvements on all platforms.
886 2013-08-22: Version 3.21.2
888 Stability improvements on all platforms.
891 2013-08-21: Version 3.21.1
893 Promoted ArrayBuffer, DataView and typed arrays to non-experimental.
894 (Chromium issue 270527)
896 Replaced OS::MemCopy with memcpy in typed array initialization.
897 (Chromium issue 270642)
899 Moved i18n break iterator C++ code to runtime (issue 2745)
901 Fixed invalid out-of-bounds store in MacroAssembler::Allocate.
902 (Chromium issue 263515)
904 Fixed register misuse in Allocate() on ARM. (issue 2851)
906 Fixed empty handle dereference in Runtime_InternalNumberFormat.
907 (Chromium issue 275467)
909 Performance and stability improvements on all platforms.
912 2013-08-19: Version 3.21.0
914 Fixed GC-related crasher (Chromium issue 274438)
916 Reverted making Intl non-enumerable.
918 Performance and stability improvements on all platforms.
921 2013-08-14: Version 3.20.17
923 Fixed Math.round/floor that had bogus Smi representation
924 (Chromium issue 272564)
926 Performance and stability improvements on all platforms.
929 2013-08-13: Version 3.20.16
931 Fixed bug in HPhi::SimplifyConstantInput (Chromium issue 269679)
933 Fixed gcmole bugs in i18n code (issue 2745)
935 ia32: Calls to the TranscendentalCacheStub must ensure that esi is
938 Made sure polymorphic element access creates non-replaying
941 Allowed HPhis to have an invalid merge index. (issue 2815)
943 Fixed smi-based math floor. (Chromium issue 270268)
945 Deprecated self and total time getters and total sample count
946 getter on CpuProfileNode. (Chromium issue 267595)
948 Fixed Object.freeze, Object.observe wrt CountOperation and
949 CompoundAssignment. (issue 2774,2779)
951 Performance and stability improvements on all platforms.
954 2013-08-07: Version 3.20.15
956 Exposed eternal handle api.
958 Bugfix to solve issues with enabling V8 typed arrays in Blink.
960 Fixed Array index dehoisting. (Chromium issue 264203)
962 Updated Array Iterator to use numeric indexes (issue 2818)
964 Return start/end profiling time in microseconds instead of milliseconds
967 Performance and stability improvements on all platforms.
970 2013-08-06: Version 3.20.14
972 Added new Harmony methods to Array.prototype object.
975 Performance and stability improvements on all platforms.
978 2013-08-01: Version 3.20.12
980 Removed buggy ToNumber truncation (partial fix for issue 2813)
982 Calling Map etc without new should throw TypeError (issue 2819)
984 Fixed a crash for large code objects on ARM (Chromium issue 2736)
986 Fixed stale unhandlified value in JSObject::SetPropertyForResult.
987 (Chromium issue 265894)
989 Added new Harmony methods to String.prototype object.
990 (issue 2796,v8:2797,v8:2798,v8:2799)
992 Performance and stability improvements on all platforms.
995 2013-07-30: Version 3.20.11
997 Performance and stability improvements on all platforms.
1000 2013-07-29: Version 3.20.10
1002 Performance and stability improvements on all platforms.
1005 2013-07-26: Version 3.20.9
1007 Check that ExternalString objects get aligned resources.
1009 Fixed JSArray-specific length lookup in polymorphic array handling
1010 (Chromium issues 263276, 263905).
1012 Performance and stability improvements on all platforms.
1015 2013-07-24: Version 3.20.8
1017 Deprecated v8::V8::Pause/ResumeProfiler.
1019 Fixed Chromium issues 247688, 258519 and 260203.
1021 Performance and stability improvements on all platforms.
1024 2013-07-22: Version 3.20.7
1026 Deprecated some debugger methods.
1028 Fixed wrong bailout id in polymorphic stores (Chromium issue 259787).
1030 Fixed data race in SamplingCircularQueue (Chromium issue 251218).
1032 Fixed type feedback in presence of negative lookups
1033 (Chromium issue 252797).
1035 Do not materialize context-allocated values for debug-evaluate
1036 (Chromium issue 259300).
1038 Synchronized Compare-Literal behavior in FullCodegen and Hydrogen
1039 (Chromium issue 260345).
1041 Performance and stability improvements on all platforms.
1044 2013-07-17: Version 3.20.6
1046 Try to remove invalidated stubs before falling back to checking the
1047 constant state (Chromium issue 260585).
1049 Fixed gyp_v8 to work with use_system_icu=1 (issue 2475).
1051 Fixed sloppy-mode 'const' under Harmony flag (Chromium issue 173361).
1053 Use internal array as API function cache (Chromium issue 260106).
1055 Fixed possible stack overflow in range analysis
1056 (Chromium issue 259452).
1058 Performance and stability improvements on all platforms.
1061 2013-07-15: Version 3.20.5
1063 Ensured that the length of frozen arrays is immutable
1064 (issue 2711, Chromium issue 259548).
1066 Performance and stability improvements on all platforms.
1069 2013-07-10: Version 3.20.4
1071 Fixed garbage-collection issue that causes a crash on ARM
1072 (Chromium issue 254570)
1074 Performance and stability improvements on all platforms.
1077 2013-07-08: Version 3.20.3
1079 Performance and stability improvements on all platforms.
1082 2013-07-05: Version 3.20.2
1084 Remove deprecated heap profiler methods from V8 public API
1086 Mark i18n functions as native and set proper names
1089 Correctly report stack trace when current function is FunctionApply
1090 builtin (Chromium issue 252097)
1092 Enable GDBJIT interface for standalone by default.
1094 Fix debuggersupport=off build. (issue 2754)
1096 Introduce -m64 flag for making x64 when the default gcc compiler is for
1099 Performance and stability improvements on all platforms.
1102 2013-07-02: Version 3.20.1
1104 Implemented WeakMap.prototype.clear function. (issue 2753)
1106 Ensure CheckInitialized is present independent of define.
1107 (Chromium issue 255779)
1109 Performance and stability improvements on all platforms.
1112 2013-06-28: Version 3.20.0
1114 Migrated several tests from blink to V8 repository.
1116 Allowed users of the V8 API to distinguish between unset and undefined
1117 HiddenValues (issue 2746).
1119 Deprecated old style callbacks in the V8 API.
1121 Turned on parallel recompilation.
1123 Performance and stability improvements on all platforms.
1126 2013-06-18: Version 3.19.18
1128 Fixed read-only attribute of Function.length in strict mode.
1131 Fixed Runtime_SetProperty to properly handle OOM failures
1132 (Chromium issue 249873)
1134 Emit deprecated check for constant function transitions.
1135 (Chromium issue 250609)
1137 Made MathFloorOfDiv optimization trigger more often
1140 Make more GCs in idle notification handler.
1141 (Chromium issue 241815)
1143 Increased default type info threshold.
1146 Performance and stability improvements on all platforms.
1149 2013-06-14: Version 3.19.16
1151 Performance and stability improvements on all platforms.
1154 2013-06-13: Version 3.19.15
1156 Performance and stability improvements on all platforms.
1159 2013-06-13: Version 3.19.14
1161 Fixed crashes when calling new Array(a) with a single argument that
1162 could result in creating a holey array with a packed elements kind.
1163 (Chromium issue 245480)
1165 Fixed issues in parallel compilation.
1166 (Chromium issue 248076)
1168 Performance and stability improvements on all platforms.
1171 2013-06-11: Version 3.19.13
1173 Performance and stability improvements on all platforms.
1176 2013-06-10: Version 3.19.12
1178 Fixed arguments array access. (Chromium issue 247303)
1180 Fixed bug in LookupForWrite. (Chromium issue 242332)
1182 Performance and stability improvements on all platforms.
1185 2013-06-07: Version 3.19.11
1187 Performance and stability improvements on all platforms.
1190 2013-06-06: Version 3.19.10
1192 Performance and stability improvements on all platforms.
1195 2013-06-05: Version 3.19.9
1197 Implemented Load IC support for loading properties from primitive
1198 values to avoid perpetual soft deopts. (Chromium issue 242512)
1200 Implemented Freeing of PerThreadAssertData when possible to avoid
1201 memory leak. (Chromium issue 246567)
1203 Removed V8_USE_OLD_STYLE_PERSISTENT_HANDLE_VISITORS.
1205 Performance and stability improvements on all platforms.
1208 2013-06-03: Version 3.19.8
1210 Fixed bug with inlining 'Array' function. (Chromium issue 244461)
1212 Fixed initialization of literal objects. (Chromium issue 245424)
1214 Fixed function name inferred inside closures. (Chromium issue 224884)
1216 Performance and stability improvements on all platforms.
1219 2013-05-31: Version 3.19.7
1221 Added support for //# sourceURL similar to deprecated //@ sourceURL one.
1224 Made sure IfBuilder::Return clears the current block.
1225 (Chromium issue 243868)
1227 Fixed two CPU profiler tests on ARM and MIPS simulators
1230 Fixed idle incremental GC for large objects.
1231 (Chromium issue 241815)
1233 Disabled --optimize-constructed-arrays due to crashes
1234 (Chromium issue 244461)
1236 Performance and stability improvements on all platforms.
1239 2013-05-28: Version 3.19.6
1241 Fixed IfBuilder::Deopt to clear the current block
1242 (Chromium issue 243868).
1244 Performance and stability improvements on all platforms.
1247 2013-05-27: Version 3.19.5
1249 Reset regexp parser flag after scanning ahead for capture groups.
1252 Removed flakiness in test-cpu-profiler/SampleWhenFrameIsNotSetup.
1255 Performance and stability improvements on all platforms.
1258 2013-05-24: Version 3.19.4
1260 Fixed edge case in stack trace formatting. (Chromium issue 237617)
1262 Fixed embedded new-space pointer in LCmpObjectEqAndBranch. (Chromium
1265 Made Object.freeze fast (issue 1858, Chromium issue 115960)
1267 Fixed bogus deopt in BuildEmitDeepCopy for holey arrays. (Chromium issue
1270 Performance and stability improvements on all platforms.
1273 2013-05-22: Version 3.19.3
1275 Performance and stability improvements on all platforms.
1278 2013-05-17: Version 3.19.2
1280 Fill in one-word-fillers for the unused property fields
1281 (Chromium issue 240056).
1283 Removed use_system_v8 logic from the mainline gyp file
1284 (Chromium issue 226860).
1286 Skip CPU profiler samples where top function's stack frame is not
1287 set up properly (issue 2628).
1289 Performance and stability improvements on all platforms.
1292 2013-05-14: Version 3.19.1
1294 Fixed missing hole check for loads from Smi arrays when all uses are
1295 changes (Chromium issue 233737)
1297 Performance and stability improvements on all platforms.
1300 2013-05-10: Version 3.19.0
1302 Deprecated Context::New which returns Persistent.
1304 Added Persistent<T>::Reset which disposes the handle and redirects it to
1305 point to another object.
1307 Deprecated WriteAscii and MayContainNonAscii.
1309 Exposed AssertNoAllocation to API.
1311 Performance and stability improvements on all platforms.
1314 2013-04-30: Version 3.18.5
1316 Allowed setting debugger breakpoints on CompareNilICs (issue 2660)
1318 Fixed beyond-heap load on x64 Crankshafted StringCharFromCode
1319 (Chromium issue 235311)
1321 Change 'Parse error' to three more informative messages.
1322 (Chromium issue 2636)
1324 Performance and stability improvements on all platforms.
1327 2013-04-26: Version 3.18.4
1329 Added a preliminary API for ES6 ArrayBuffers
1331 Replaced qsort with std::sort. (Chromium issue 2639)
1333 Performance and stability improvements on all platforms.
1336 2013-04-24: Version 3.18.3
1338 Exposed the GC under a name that is less collision prone than window.gc.
1341 Do not emit double values at their use sites. (Chromium issue 234101)
1343 Added methods to allow resuming execution after calling
1344 TerminateExecution(). (issue 2361)
1346 Performance and stability improvements on all platforms.
1349 2013-04-22: Version 3.18.2
1351 OS::MemMove/OS::MemCopy: Don't call through to generated code when size
1352 == 0 to avoid prefetching invalid memory (Chromium issue 233500)
1354 Removed heap snapshot size limit. (Chromium issue 232305)
1356 Performance and stability improvements on all platforms.
1359 2013-04-18: Version 3.18.1
1361 Removed SCons related files and deprecated test suite configurations.
1363 Improved handling of unary plus (issue 2527).
1365 Performance and stability improvements on all platforms.
1368 2013-04-17: Version 3.18.0
1370 Enabled pretenuring of fast literals in high promotion mode.
1372 Removed preparser library; link preparser executable against full V8.
1374 Fixed set-up of intrinsic's 'constructor' properties.
1375 (Chromium issue 229445)
1377 ES6 symbols: extended V8 API to support symbols (issue 2158).
1379 Removed ARM support for VFP2.
1381 Made __proto__ a real JavaScript accessor property.
1382 (issue 1949 and issue 2606)
1384 Performance and stability improvements on all platforms.
1387 2013-04-04: Version 3.17.16
1389 Stack trace API: poison stack frames below the first strict mode frame.
1392 Made Isolate::GetHeapStatistics robust against half-initialized
1393 isolates (Chromium issue 2591).
1395 Finished implementation of ES6 symbols aka. private names (issue 2158).
1397 Performance and stability improvements on all platforms.
1400 2013-03-21: Version 3.17.15
1402 Rolled back API changes to maintain compatibility with older
1403 3.17.x versions of V8.
1405 Disable zapping of global handles in release mode.
1407 Always mark the entire valid prefix of the descriptor array.
1408 (Chromium issue 196331)
1410 Use internal memcpy for CopyWords and when copying code.
1411 (Chromium issue 196330)
1413 Performance and stability improvements on all platforms.
1416 2013-03-20: Version 3.17.14
1418 Use internal memcpy when initializing code objects.
1419 (Chromium issue 196330)
1421 Disabled weak embedded maps because of crashes.
1422 (Chromium issues 172489, 217858)
1424 Performance and stability improvements on all platforms.
1427 2013-03-19: Version 3.17.13
1429 Turned Flags into a uint32_t typedef (Chromium issue 194749).
1431 Performance and stability improvements on all platforms.
1434 2013-03-18: Version 3.17.12
1436 Unified kMaxArguments with number of bits used to encode it.
1437 (Chromium issue 211741)
1439 Fixed detection of |handle_smi| case in
1440 HOptimizedGraphBuilder::HandlePolymorphicCallNamed.
1441 (Chromium issue 196583)
1443 Performance and stability improvements on all platforms.
1446 2013-03-15: Version 3.17.11
1448 Added a version of the v8::HandleScope constructor with an v8::Isolate
1449 parameter and made AdjustAmountOfExternalAllocatedMemory an instance
1450 method of v8::Isolate.
1453 Fixed two register allocator bugs (off-by-one error/failure
1454 propagation). (issue 2576)
1456 Fixed huge heap snapshot when a heavily shared context has many
1457 variables. (Chromium issue 145687)
1459 Performance and stability improvements on all platforms.
1462 2013-03-13: Version 3.17.10
1464 Fixed heap snapshot creation for Harmony collections. (issue 2535)
1466 Fixed register allocation corner case. (Chromium issue 177883)
1468 Performance and stability improvements on all platforms.
1471 2013-03-08: Version 3.17.9
1473 Restored Function()'s expected string representation. (issue 2470)
1475 Enabled deprecatations (again). (issue 2487)
1477 Avoid bool to Oddball conversions by being lazy. (issue 2491)
1479 Added %p option to --logfile.
1481 Hardened Function()'s parsing of function literals. (issue 2470)
1483 ES6 symbols: Refine test for getOwnPropertyNames. (issue 2158)
1485 Performance and stability improvements on all platforms.
1488 2013-03-07: Version 3.17.8
1490 Added missing license headers. (Chromium issue 98597)
1492 Inserted missing type cast in JSON.stringify. (issue 2570)
1494 Reverted "Send SIGPROF signals on the profiler event processor thread"
1497 Fixed Array.length, String.length and Function.prototype LoadICs on x64.
1500 ES6 symbols: filter symbols form for-in loops and Object.keys.
1503 Properly handle misses for StoreArrayLengthStub on ia32 and x64
1506 Fixed x32 handling of Atomic64. (Chromium issue chromium-os:36866)
1508 Removed "library" variable from standalone.gypi. (Chromium issue 111541)
1510 Fixed HCheckSmiOrInt <-> HBoundsCheck interaction wrt. representations.
1513 Enabled zapping of disposed global handles in release mode.
1514 (Chromium issue 176056)
1516 Added workaround for redefinition of __proto__ property. (issue 2565)
1518 ES6 symbols: Allow symbols as property names. (issue 2158)
1520 Performance and stability improvements on all platforms.
1523 2013-03-04: Version 3.17.7
1525 Limited recursion in regexp compilation by a budget.
1526 (Chromium issue 178790)
1528 ES6 symbols: Implemented Symbol intrinsic and basic functionality
1531 Performance and stability improvements on all platforms.
1534 2013-02-28: Version 3.17.6
1536 Fixed materialization of arguments objects with unknown values.
1537 (Chromium issue 163530)
1539 Set default number of sweeper threads to at most four.
1541 Performance and stability improvements on all platforms.
1544 2013-02-27: Version 3.17.5
1546 Made __proto__ a foreign callback on Object.prototype.
1547 (issue 621, issue 1949 and issue 2441)
1549 Performance and stability improvements on all platforms.
1552 2013-02-25: Version 3.17.4
1554 Performance and stability improvements on all platforms.
1557 2013-02-21: Version 3.17.3
1559 Performance and stability improvements on all platforms.
1562 2013-02-19: Version 3.17.2
1564 Removed bogus check for TOP register in deoptimizer.
1565 (Chromium issue 176943)
1567 Made the Isolate parameter mandatory for internal HandleScopes.
1570 Fixed f.apply() optimization when declared arguments are mutated.
1573 Performance and stability improvements on all platforms.
1576 2013-02-14: Version 3.17.1
1578 Performance and stability improvements on all platforms.
1581 2013-02-13: Version 3.17.0
1583 Enabled parallel sweeping.
1585 Don't try to unlink instructions twice during GVN
1586 (Chromium issue 175141)
1588 Fixed code flusher disabling while marking incrementally.
1589 (Chromium issue 173458, 168582)
1591 Don't use TLS for space iterators.
1594 Added new GetHeapStatistics API entry and deprecated old one.
1596 Fixed DoubleStackSlot-to-DoubleStackSlot moves on ia32. Unified
1597 platform-independent code.
1598 (Chromium issue 173907)
1600 Added --trace-array-abuse to help find OOB accesses.
1602 Performance and stability improvements on all platforms.
1605 2013-02-06: Version 3.16.14
1607 Performance and stability improvements on all platforms.
1610 2013-02-04: Version 3.16.13
1612 Tagged stubs that rely on instance types as MEGAMORPHIC.
1613 (Chromium issue 173974)
1615 Fixed clearing of dead dependent codes and verifing of weak
1616 embedded maps on full GC. (Chromium issue 172488,172489)
1618 Made the arm port build cleanly with Clang.
1620 Performance and stability improvements on all platforms.
1623 2013-01-31: Version 3.16.12
1625 Performance and stability improvements on all platforms.
1628 2013-01-30: Version 3.16.11
1630 Put making embedded maps in optimized code weak behind a flag.
1631 (Chromium issue 172488,172489)
1633 Performance and stability improvements on all platforms.
1636 2013-01-25: Version 3.16.10
1638 Avoid excessive memory usage during redundant phi elimination.
1641 Fixed additional spec violations wrt RegExp.lastIndex.
1644 Added Isolate parameter to Persistent class.
1647 Performance and stability improvements on all platforms.
1650 2013-01-24: Version 3.16.9
1652 Made embedded maps in optimized code weak.
1655 Fixed corner case when JSFunction is evicted from flusher.
1656 (Chromium issue 168801)
1658 Correctly set kCanBeDivByZero flag for HMathFloorOfDiv.
1659 (Chromium issue 171641)
1661 Performance and stability improvements on all platforms.
1664 2013-01-23: Version 3.16.8
1666 Correctly reset lastIndex in an RegExp object.
1667 (Chromium issue 170856)
1669 Added a workaround for Windows compilation problems related to V8EXPORT.
1672 tools/run-tests.py: shlex.split() the value of --command-prefix
1673 (Chromium issue 171553)
1675 Fixed pattern detection for replacing shifts by rotation.
1676 (Chromium issue 2499)
1678 Performance and stability improvements on all platforms.
1681 2013-01-21: Version 3.16.7
1683 Removed <(library) usage from v8.gyp.
1684 (Chromium issue 111541)
1686 Fixed out of bounds memory access in TestJSArrayForAllocationSiteInfo.
1687 (Chromium issue 169928)
1689 Performance and stability improvements on all platforms.
1692 2013-01-18: Version 3.16.6
1694 Made the Isolate parameter mandatory in Locker and Unlocker classes.
1697 Avoid pointer underflow in CopyCharsUnsigned.
1700 Generate shim headers when using system v8.
1701 (Chromium issue 165264)
1703 Fixed arguments materialization for inlined apply().
1706 Sync'ed laziness between BuildFunctionInfo and MakeFunctionInfo.
1707 (Chromium issue 147497)
1709 Added sanity check to CodeFlusher::AddCandidate.
1710 (Chromium issue 169209)
1712 Performance and stability improvements on all platforms.
1715 2013-01-15: Version 3.16.5
1717 Removed deprecated functions from V8's external API.
1719 Prepared API for WebKit use of Latin-1.
1721 Fixed V8 issue 2486.
1723 Fixed Chromium issue 169723.
1725 Performance and stability improvements on all platforms.
1728 2013-01-11: Version 3.16.4
1730 Fixed Chromium issues 168545 and 169209.
1732 Performance and stability improvements on all platforms.
1735 2013-01-09: Version 3.16.3
1737 Improved GC performance when moving parts of a FixedArray (issue 2452).
1739 Enabled readline on d8 while building a shared lib (issue 1781).
1741 Fixed missing exception check in typed array constructor
1742 (Chromium issue 168545).
1744 Check for read-only-ness when preparing for array sort (issue 2419).
1746 Performance and stability improvements on all platforms.
1749 2013-01-04: Version 3.16.2
1751 Added Makefile options to build for the Raspberry Pi (armv7=0,
1754 Performance and stability improvements on all platforms.
1757 2012-12-27: Version 3.16.1
1759 Fixed x64 MathMinMax for negative untagged int32 arguments.
1760 (Chromium issue 164442)
1762 Fixed FloatingPointHelper::CheckSSE2OperandIsInt32.
1765 Performance and stability improvements on all platforms.
1768 2012-12-21: Version 3.16.0
1770 V8_Fatal now prints C++ stack trace in debug mode.
1772 Added HTML-based tick processor.
1774 Continued implementation of Object.observe (V8 issue 2409).
1776 Fixed V8 issues 2243, 2340, 2393, 2399, 2457.
1778 Fixed Chromium issues 125308, 165637, 166379, 166553.
1780 Performance and stability improvements on all platforms.
1783 2012-12-10: Version 3.15.11
1785 Define CAN_USE_VFP2/3_INSTRUCTIONS based on arm_neon and arm_fpu GYP
1788 Performance and stability improvements on all platforms.
1791 2012-12-07: Version 3.15.10
1793 Enabled optimisation of functions inside eval. (issue 2315)
1795 Fixed spec violations in methods of Number.prototype. (issue 2443)
1797 Added GCTracer metrics for a scavenger GC for DOM wrappers.
1799 Performance and stability improvements on all platforms.
1802 2012-12-06: Version 3.15.9
1804 Fixed candidate eviction in code flusher.
1805 (Chromium issue 159140)
1807 Iterate through all arguments for side effects in Math.min/max.
1810 Fixed spec violations related to regexp.lastIndex
1811 (issue 2437, issue 2438)
1813 Performance and stability improvements on all platforms.
1816 2012-12-04: Version 3.15.8
1818 Enforced stack allocation of TryCatch blocks.
1819 (issue 2166,chromium:152389)
1821 Fixed external exceptions in external try-catch handlers.
1824 Activated incremental code flushing by default.
1826 Performance and stability improvements on all platforms.
1829 2012-11-30: Version 3.15.7
1831 Activated code aging by default.
1833 Included more information in --prof log.
1835 Removed eager sweeping for lazy swept spaces. Try to find in
1836 SlowAllocateRaw a bounded number of times a big enough memory slot.
1839 Performance and stability improvements on all platforms.
1842 2012-11-26: Version 3.15.6
1844 Ensure double arrays are filled with holes when extended from
1845 variations of empty arrays. (Chromium issue 162085)
1847 Performance and stability improvements on all platforms.
1850 2012-11-23: Version 3.15.5
1852 Fixed JSON.stringify for objects with interceptor handlers.
1853 (Chromium issue 161028)
1855 Fixed corner case in x64 compare stubs. (issue 2416)
1857 Performance and stability improvements on all platforms.
1860 2012-11-16: Version 3.15.4
1862 Fixed Array.prototype.join evaluation order. (issue 2263)
1864 Perform CPU sampling by CPU sampling thread only iff processing thread
1865 is not running. (issue 2364)
1867 When using an Object as a set in Object.getOwnPropertyNames, null out
1868 the proto. (issue 2410)
1870 Disabled EXTRA_CHECKS in Release build.
1872 Heap explorer: Show representation of strings.
1874 Removed 'type' and 'arguments' properties from Error object.
1877 Added atomics implementation for ThreadSanitizer v2.
1878 (Chromium issue 128314)
1880 Fixed LiveEdit crashes when object/array literal is added. (issue 2368)
1882 Performance and stability improvements on all platforms.
1885 2012-11-13: Version 3.15.3
1887 Changed sample shell to send non-JS output (e.g. errors) to stderr
1890 Correctly check for stack overflow even when interrupt is pending.
1893 Collect stack trace on stack overflow. (issue 2394)
1895 Performance and stability improvements on all platforms.
1898 2012-11-12: Version 3.15.2
1900 Function::GetScriptOrigin supplies sourceURL when script name is
1901 not available. (Chromium issue 159413)
1903 Made formatting error message side-effect-free. (issue 2398)
1905 Fixed length check in JSON.stringify. (Chromium issue 160010)
1907 ES6: Added support for Set and Map clear method (issue 2400)
1909 Fixed slack tracking when instance prototype changes.
1910 (Chromium issue 157019)
1912 Fixed disabling of code flusher while marking. (Chromium issue 159140)
1914 Added a test case for object grouping in a scavenger GC (issue 2077)
1916 Support shared library build of Android for v8.
1917 (Chromium issue 158821)
1919 ES6: Added support for size to Set and Map (issue 2395)
1921 Performance and stability improvements on all platforms.
1924 2012-11-06: Version 3.15.1
1926 Put incremental code flushing behind a flag. (Chromium issue 159140)
1928 Performance and stability improvements on all platforms.
1931 2012-10-31: Version 3.15.0
1933 Loosened aligned code target requirement on ARM (issue 2380)
1935 Fixed JSON.parse to treat leading zeros correctly.
1936 (Chromium issue 158185)
1938 Performance and stability improvements on all platforms.
1941 2012-10-22: Version 3.14.5
1943 Killed off the SCons based build.
1945 Added a faster API for creating v8::Integer objects.
1947 Speeded up function deoptimization by avoiding quadratic pass over
1948 optimized function list. (Chromium issue 155270)
1950 Always invoke the default Array.sort functions from builtin functions.
1953 Reverted recent CPU profiler changes because they broke --prof.
1956 Switched code flushing to use different JSFunction field.
1959 Performance and stability improvements on all platforms.
1962 2012-10-15: Version 3.14.4
1964 Allow evals for debugger even if they are prohibited in the debugee
1965 context. (Chromium issue 154733)
1967 Enabled --verify-heap in release mode (issue 2120)
1969 Performance and stability improvements on all platforms.
1972 2012-10-11: Version 3.14.3
1974 Use native context to retrieve ErrorMessageForCodeGenerationFromStrings
1975 (Chromium issue 155076).
1977 Bumped variable limit further to 2^17 (Chromium issue 151625).
1979 Performance and stability improvements on all platforms.
1982 2012-10-10: Version 3.14.2
1984 ARM: allowed VFP3 instructions when hardfloat is enabled.
1985 (Chromium issue 152506)
1987 Fixed instance_descriptors() and PushStackTraceAndDie regressions.
1988 (Chromium issue 151749)
1990 Made GDBJIT interface compile again. (issue 1804)
1992 Fixed Accessors::FunctionGetPrototype's proto chain traversal.
1993 (Chromium issue 143967)
1995 Made sure that names of temporaries do not clash with real variables.
1998 Rejected local module declarations. (Chromium issue 150628)
2000 Rejected uses of lexical for-loop variable on the RHS. (issue 2322)
2002 Fixed slot recording of code target patches.
2003 (Chromium issue 152615,chromium:144230)
2005 Changed the Android makefile to use GCC 4.6 instead of GCC 4.4.3.
2007 Performance and stability improvements on all platforms.
2010 2012-10-01: Version 3.14.1
2012 Don't set -m32 flag when compiling with Android ARM compiler.
2013 (Chromium issue 143889)
2015 Restore the descriptor array before returning allocation failure.
2016 (Chromium issue 151750)
2018 Lowered kMaxVirtualRegisters (v8 issue 2139, Chromium issues 123822 and
2021 Pull more recent gyp in 'make dependencies'.
2023 Made sure that the generic KeyedStoreIC changes length and element_kind
2024 atomically (issue 2346).
2026 Bumped number of allowed variables per scope to 65535, to address GWT.
2027 (Chromium issue 151625)
2029 Support sourceURL for dynamically inserted scripts (issue 2342).
2031 Performance and stability improvements on all platforms.
2034 2012-09-20: Version 3.14.0
2036 Fixed missing slot recording during clearing of CallICs.
2037 (Chromium issue 144230)
2039 Fixed LBoundsCheck on x64 to handle (stack slot + constant) correctly.
2040 (Chromium issue 150729)
2042 Fixed minus zero test. (Issue 2133)
2044 Fixed setting array length to zero for slow elements.
2045 (Chromium issue 146910)
2047 Fixed lost arguments dropping in HLeaveInlined.
2048 (Chromium issue 150545)
2050 Fixed casting error for receiver of interceptors.
2051 (Chromium issue 149912)
2053 Throw a more descriptive exception when blocking 'eval' via CSP.
2054 (Chromium issue 140191)
2056 Fixed debugger's eval when close to stack overflow. (issue 2318)
2058 Added checks to live edit. (issue 2297)
2060 Switched on code compaction on incremental GCs.
2062 Fixed caching of optimized code for OSR. (issue 2326)
2064 Not mask exception thrown by toString in String::UtfValue etc.
2067 Fixed API check for length of external arrays. (Chromium issue 148896)
2069 Ensure correct enumeration indices in the dict (Chromium issue 148376)
2071 Correctly initialize regexp global cache. (Chromium issue 148378)
2073 Fixed arguments object materialization during deopt. (issue 2261)
2075 Introduced new API to expose external string resource regardless of
2078 Fixed CHECK failure in LCodeGen::DoWrapReceiver when
2079 --deopt-every-n-times flag is present
2080 (Chromium issue 148389)
2082 Fixed edge case of extension with NULL as source string.
2083 (Chromium issue 144649)
2085 Fixed array index dehoisting. (Chromium issue 141395)
2087 Performance and stability improvements on all platforms.
2090 2012-09-11: Version 3.13.7
2092 Enable/disable LiveEdit using the (C++) debug API.
2094 Performance and stability improvements on all platforms.
2097 2012-09-06: Version 3.13.6
2099 Added validity checking to API functions and calls.
2101 Disabled accessor inlining (Chromium issue 134609).
2103 Fixed bug in Math.min/max in optimized code (Chromium issue 145961).
2105 Directly use %ObjectKeys in json stringify (Chromium issue 2312).
2107 Fixed VS2005 build (issue 2313).
2109 Activated fixed ES5 readonly semantics by default.
2111 Added hardfp flag to the Makefile.
2113 Performance and stability improvements on all platforms.
2116 2012-08-29: Version 3.13.5
2118 Release stack trace data after firing Error.stack accessor.
2121 Added a new API V8::SetJitCodeEventHandler to push code name and
2122 location to users such as profilers.
2124 Allocate block-scoped global bindings to global context.
2126 Performance and stability improvements on all platforms.
2129 2012-08-28: Version 3.13.4
2131 Print reason for disabling optimization. Kill --trace-bailout flag.
2133 Provided option to disable full DEBUG build on Android.
2135 Introduced global contexts to represent lexical global scope(s).
2137 Fixed rounding in Uint8ClampedArray setter. (issue 2294)
2139 Performance and stability improvements on all platforms.
2142 2012-08-21: Version 3.13.3
2144 Performance and stability improvements on all platforms.
2147 2012-08-20: Version 3.13.2
2149 Performance and stability improvements on all platforms.
2152 2012-08-16: Version 3.13.1
2154 Performance and stability improvements on all platforms.
2157 2012-08-10: Version 3.13.0
2159 Added histograms for total allocated/live heap size, as well as
2160 allocated size and percentage of total for map and cell space.
2162 Fixed parseInt's octal parsing behavior (ECMA-262 Annex E 15.1.2.2).
2165 Added checks for interceptors to negative lookup code in Crankshaft.
2166 (Chromium issue 140473)
2168 Made incremental marking clear ICs and type feedback cells.
2170 Performance and stability improvements on all platforms.
2173 2012-08-01: Version 3.12.19
2175 Performance and stability improvements on all platforms.
2178 2012-07-30: Version 3.12.18
2180 Forced using bit-pattern for signed zero double. (issue 2239)
2182 Made sure double to int conversion is correct. (issue 2260)
2184 Performance and stability improvements on all platforms.
2187 2012-07-27: Version 3.12.17
2189 Always set the callee's context when calling a function from optimized
2191 (Chromium issue 138887)
2193 Fixed building with GCC 3.x
2196 Improved API calls that return empty handles.
2199 Performance and stability improvements on all platforms.
2202 2012-07-25: Version 3.12.16
2204 Performance and stability improvements on all platforms.
2207 2012-07-24: Version 3.12.15
2209 Added PRESERVE_ASCII_NULL option to String::WriteAscii.
2212 Added dependency to HLoadKeyed* instructions to prevent invalid
2213 hoisting. (Chromium issue 137768)
2215 Enabled building d8 for Android on Mac.
2217 Interpret negative hexadecimal literals as NaN.
2220 Expose counters in javascript when using --track-gc-object-stats.
2222 Enabled building and testing V8 on Android IA.
2224 Added --trace-parse flag to parser.
2226 Performance and stability improvements on all platforms.
2229 2012-07-18: Version 3.12.14
2231 Deactivated optimization of packed arrays.
2232 (Chromium issue 137768)
2234 Fixed broken accessor transition.
2235 (Chromium issue 137689)
2237 Performance and stability improvements on all platforms.
2240 2012-07-17: Version 3.12.13
2242 Fixed missing tagging of stack value in finally block.
2243 (Chromium issue 137496)
2245 Added more support for heap analysis.
2247 Performance and stability improvements on all platforms.
2250 2012-07-16: Version 3.12.12
2252 Added an option to the tickprocessor to specify the directory for lib
2255 Fixed ICs for slow objects with native accessor (Chromium issue 137002).
2257 Fixed transcendental cache on ARM in optimized code (issue 2234).
2259 New heap inspection tools: counters for object sizes and counts,
2260 histograms for external fragmentation.
2262 Incorporated constness into inferred interfaces (in preparation for
2263 handling imports) (issue 1569).
2265 Performance and stability improvements on all platforms.
2268 2012-07-12: Version 3.12.11
2270 Renamed "mips" arch to "mipsel" in the GYP build.
2272 Fixed computation of call targets on prototypes in Crankshaft.
2273 (Chromium issue 125148)
2275 Removed use of __lookupGetter__ when generating stack trace.
2278 Turned on ES 5.2 globals semantics by default.
2279 (issue 1991, Chromium issue 80591)
2281 Synced preparser and parser wrt syntax error in switch..case.
2284 Fixed reporting of octal literals in strict mode when preparsing.
2287 Fixed inline constructors for Harmony Proxy prototypes.
2290 Performance and stability improvements on all platforms.
2293 2012-07-10: Version 3.12.10
2295 Re-enabled and fixed issue with array bounds check elimination
2296 (Chromium issue 132114).
2298 Fixed Debug::Break crash. (Chromium issue 131642)
2300 Added optimizing compiler support for JavaScript getters.
2302 Performance and stability improvements on all platforms.
2305 2012-07-06: Version 3.12.9
2307 Correctly advance the scanner when scanning unicode regexp flag.
2308 (Chromium issue 136084)
2310 Fixed unhandlified code calling Harmony Proxy traps.
2313 Performance and stability improvements on all platforms.
2316 2012-07-05: Version 3.12.8
2318 Implemented TypedArray.set and ArrayBuffer.slice in d8.
2320 Performance and stability improvements on all platforms.
2323 2012-07-03: Version 3.12.7
2325 Fixed lazy compilation for strict eval scopes.
2326 (Chromium issue 135066)
2328 Made MACOSX_DEPLOYMENT_TARGET configurable in GYP.
2331 Report "hidden properties" in heap profiler for properties case.
2334 Activated optimization of packed arrays by default.
2336 Performance and stability improvements on all platforms.
2339 2012-06-29: Version 3.12.6
2341 Cleaned up hardfp ABI detection for ARM (V8 issue 2140).
2343 Extended TypedArray support in d8.
2346 2012-06-28: Version 3.12.5
2348 Fixed lazy parsing heuristics to respect outer scope.
2349 (Chromium issue 135008)
2351 Allow using test-wrapper-gypbuild.py on Windows when no python
2352 interpreter is registered.
2354 Performance and stability improvements on all platforms.
2357 2012-06-27: Version 3.12.4
2359 Removed -fomit-frame-pointer flag from Release builds to make
2360 the stack walkable by TCMalloc (Chromium issue 133723).
2362 Ported r7868 (constant masking) to x64 (issue 1374).
2364 Expose more detailed memory statistics (issue 2201).
2366 Fixed Harmony Maps and WeakMaps for undefined values
2367 (Chromium issue 132744).
2369 Correctly throw reference error in strict mode with ICs disabled
2372 Performance and stability improvements on all platforms.
2375 2012-06-25: Version 3.12.3
2377 Reverted r11835 'Unify promotion and allocation limit computation' due
2378 to V8 Splay performance regression on Mac. (Chromium issue 134183)
2380 Fixed sharing of literal boilerplates for optimized code. (issue 2193)
2382 Performance and stability improvements on all platforms.
2385 2012-06-22: Version 3.12.2
2387 Made near-jump check more strict in LoadNamedFieldPolymorphic on
2388 ia32/x64. (Chromium issue 134055)
2390 Fixed lazy sweeping heuristics to prevent old-space expansion.
2393 Performance and stability improvements on all platforms.
2396 2012-06-21: Version 3.12.1
2398 Performance and stability improvements on all platforms.
2401 2012-06-20: Version 3.12.0
2403 Fixed Chromium issues:
2404 115100, 129628, 131994, 132727, 132741, 132742, 133211
2407 915, 1914, 2034, 2087, 2094, 2134, 2156, 2166, 2172, 2177, 2179, 2185
2409 Added --extra-code flag to mksnapshot to load JS code into the VM
2410 before creating the snapshot.
2412 Support 'restart call frame' command in the debugger.
2414 Performance and stability improvements on all platforms.
2417 2012-06-13: Version 3.11.10
2419 Implemented heap profiler memory usage reporting.
2421 Preserved error message during finally block in try..finally.
2422 (Chromium issue 129171)
2424 Fixed EnsureCanContainElements to properly handle double values.
2427 Improved heuristics to keep objects in fast mode with inherited
2430 Performance and stability improvements on all platforms.
2433 2012-06-06: Version 3.11.9
2435 Implemented ES5-conformant semantics for inherited setters and read-only
2436 properties. Currently behind --es5_readonly flag, because it breaks
2439 Exposed last seen heap object id via v8 public api.
2441 Performance and stability improvements on all platforms.
2444 2012-05-31: Version 3.11.8
2446 Avoid overdeep recursion in regexp where a guarded expression with a
2447 minimum repetition count is inside another quantifier.
2448 (Chromium issue 129926)
2450 Fixed missing write barrier in store field stub.
2451 (issues 2143, 1465, Chromium issue 129355)
2453 Proxies: Fixed receiver for setters inherited from proxies.
2454 Proxies: Fixed ToStringArray function so that it does not reject some
2458 Performance and stability improvements on all platforms.
2461 2012-05-29: Version 3.11.7
2463 Get better function names in stack traces.
2465 Performance and stability improvements on all platforms.
2468 2012-05-24: Version 3.11.6
2470 Fixed RegExp.prototype.toString for incompatible receivers
2473 Performance and stability improvements on all platforms.
2476 2012-05-23: Version 3.11.5
2478 Performance and stability improvements on all platforms.
2481 2012-05-22: Version 3.11.4
2483 Some cleanup to common.gypi. This fixes some host/target combinations
2484 that weren't working in the Make build on Mac.
2486 Handle EINTR in socket functions and continue incomplete sends.
2489 Fixed python deprecations. (issue 1391)
2491 Made socket send and receive more robust and return 0 on failure.
2492 (Chromium issue 15719)
2494 Fixed GCC 4.7 (C++11) compilation. (issue 2136)
2496 Set '-m32' option for host and target platforms
2498 Performance and stability improvements on all platforms.
2501 2012-05-18: Version 3.11.3
2503 Disable optimization for functions that have scopes that cannot be
2504 reconstructed from the context chain. (issue 2071)
2506 Define V8_EXPORT to nothing for clients of v8. (Chromium issue 90078)
2508 Correctly check for native error objects. (Chromium issue 2138)
2510 Performance and stability improvements on all platforms.
2513 2012-05-16: Version 3.11.2
2515 Revert r11496. (Chromium issue 128146)
2517 Implement map collection for incremental marking. (issue 1465)
2519 Add toString method to CallSite (which describes a frame of the
2523 2012-05-15: Version 3.11.1
2525 Added a readbuffer function to d8 that reads a file into an ArrayBuffer.
2527 Fix freebsd build. (V8 issue 2126)
2529 Performance and stability improvements on all platforms.
2532 2012-05-11: Version 3.11.0
2534 Fixed compose-discard crasher from r11524 (issue 2123).
2536 Activated new global semantics by default. Global variables can
2537 now shadow properties of the global object (ES5.1 erratum).
2539 Properly set ElementsKind of empty FAST_DOUBLE_ELEMENTS arrays when
2540 transitioning (Chromium issue 117409).
2542 Made Error.prototype.name writable again, as required by the spec and
2543 the web (Chromium issue 69187).
2545 Implemented map collection with incremental marking (issue 1465).
2547 Regexp: Fixed overflow in min-match-length calculation
2548 (Chromium issue 126412).
2550 MIPS: Fixed illegal instruction use on Loongson in code for
2551 Math.random() (issue 2115).
2553 Fixed crash bug in VisitChoice (Chromium issue 126272).
2555 Fixed unsigned-Smi check in MappedArgumentsLookup
2556 (Chromium issue 126414).
2558 Fixed LiveEdit for function with no locals (issue 825).
2560 Fixed register clobbering in LoadIC for interceptors
2561 (Chromium issue 125988).
2563 Implemented clearing of CompareICs (issue 2102).
2565 Performance and stability improvements on all platforms.
2568 2012-05-03: Version 3.10.8
2570 Enabled MIPS cross-compilation.
2572 Ensured reload of elements pointer in StoreFastDoubleElement stub.
2573 (Chromium issue 125515)
2575 Fixed corner cases in truncation behavior when storing to
2576 TypedArrays. (issue 2110)
2578 Fixed failure to properly recognize and report out-of-memory
2579 conditions when allocating code space pages. (Chromium issue
2582 Fixed idle notifications to perform a round of incremental GCs
2583 after context disposal. (issue 2107)
2585 Fixed preparser for try statement. (issue 2109)
2587 Performance and stability improvements on all platforms.
2590 2012-04-30: Version 3.10.7
2592 Performance and stability improvements on all platforms.
2595 2012-04-26: Version 3.10.6
2597 Fixed some bugs in accessing details of the last regexp match.
2599 Fixed source property of empty RegExp objects. (issue 1982)
2601 Enabled inlining some V8 API functions.
2603 Performance and stability improvements on all platforms.
2606 2012-04-23: Version 3.10.5
2608 Put new global var semantics behind a flag until WebKit tests are
2611 Enabled stepping into callback passed to builtins.
2612 (Chromium issue 109564)
2614 Performance and stability improvements on all platforms.
2617 2012-04-19: Version 3.10.4
2619 Fixed issues when stressing compaction with WeakMaps.
2621 Fixed missing GVN flag for new-space promotion. (Chromium issue 123919)
2623 Simplify invocation sequence at monomorphic function invocation sites.
2626 Performance and stability improvements on all platforms.
2629 2012-04-17: Version 3.10.3
2631 Fixed several bugs in heap profiles (including issue 2078).
2633 Throw syntax errors on illegal escape sequences.
2635 Implemented rudimentary module linking (behind --harmony flag)
2637 Implemented ES5 erratum: Global declarations should shadow
2638 inherited properties.
2640 Made handling of const more consistent when combined with 'eval'
2643 Fixed V8 on MinGW-x64 (issue 2026).
2645 Performance and stability improvements on all platforms.
2648 2012-04-13: Version 3.10.2
2650 Fixed native ARM build (issues 1744, 539)
2652 Return LOOKUP variable instead of CONTEXT for non-context allocated
2653 outer scope parameters (Chromium issue 119609).
2655 Fixed regular and ElementsKind transitions interfering with each other
2656 (Chromium issue 122271).
2658 Improved performance of keyed loads/stores which have a HeapNumber
2659 index (issues 1388, 1295).
2661 Fixed WeakMap processing for evacuation candidates (issue 2060).
2663 Bailout on possible direct eval calls (Chromium issue 122681).
2665 Do not assume that names of function expressions are context-allocated
2668 Performance and stability improvements on all platforms.
2671 2012-04-10: Version 3.10.1
2673 Fixed bug with arguments object in inlined functions (issue 2045).
2675 Fixed performance bug with lazy initialization (Chromium issue
2678 Added suppport for Mac OS X 64bit builds with GYP.
2679 (Patch contributed by Filipe David Manana <fdmanana@gmail.com>)
2681 Fixed bug with hidden properties (issue 2034).
2683 Fixed a performance bug when reloading pages (Chromium issue 117767,
2686 Fixed bug when optimizing throw in top-level code (issue 2054).
2688 Fixed two bugs with array literals (issue 2055, Chromium issue 121407).
2690 Fixed bug with Math.min/Math.max with NaN inputs (issue 2056).
2692 Fixed a bug with the new runtime profiler (Chromium issue 121147).
2694 Fixed compilation of V8 using uClibc.
2696 Optimized boot-up memory use.
2698 Optimized regular expressions.
2701 2012-03-30: Version 3.10.0
2703 Fixed store IC writability check in strict mode
2704 (Chromium issue 120099).
2706 Resynchronize timers if the Windows system time was changed.
2707 (Chromium issue 119815)
2709 Removed "-mfloat-abi=hard" from host compiler cflags when building for
2711 (https://code.google.com/p/chrome-os-partner/issues/detail?id=8539)
2713 Fixed edge case for case independent regexp character classes
2716 Reset function info counters after context disposal.
2717 (Chromium issue 117767, V8 issue 1902)
2719 Fixed missing write barrier in CopyObjectToObjectElements.
2720 (Chromium issue 119926)
2722 Fixed missing bounds check in HasElementImpl.
2723 (Chromium issue 119925)
2725 Performance and stability improvements on all platforms.
2728 2012-03-23: Version 3.9.24
2730 Activated count-based profiler for ARM.
2732 Fixed use of proxies as f.prototype properties. (issue 2021)
2734 Enabled snapshots on MIPS.
2736 Performance and stability improvements on all platforms.
2739 2012-03-21: Version 3.9.23
2741 Use correct arguments adaptation environment when inlining function
2742 containing arguments. (Issue 2014)
2744 Performance and stability improvements on all platforms.
2747 2012-03-20: Version 3.9.22
2749 Enabled count-based profiler by default.
2751 Implemented a hash based look-up to speed up address checks
2752 in large object space (issue 853).
2754 Performance and stability improvements on all platforms.
2757 2012-03-19: Version 3.9.21
2759 Fixed push-to-trunk script (and re-push).
2761 Added API call that identifies strings that are guaranteed only to
2762 contain ASCII characters.
2765 2012-03-19: Version 3.9.20
2767 Fixed declarations escaping global strict eval. (Issue 1624)
2769 Fixed wrapping of receiver for non-strict callbacks. (Issue 1973)
2771 Fixed function declarations overwriting read-only global properties.
2772 (Chromium issue 115452)
2774 Fixed --use-strict flag in combination with --harmony[-scoping].
2776 Debugger: naive implementation of "step into Function.prototype.bind".
2778 Debugger: added ability to set script source from within OnBeforeCompile
2780 Added flag to always call DebugBreak on abort.
2782 Re-enabled constructor inlining and inline === comparison with boolean
2783 constants. (Issue 2009)
2785 Don't use an explicit s0 in ClampDoubleToUint8. (Issue 2004)
2787 Performance and stability improvements on all platforms.
2790 2012-03-14: Version 3.9.19
2792 Ensure there is a smi check of the receiver for global load and call
2793 ICs (Chromium issue 117794).
2795 Performance and stability improvements on all platforms.
2798 2012-03-13: Version 3.9.18
2800 Ensure consistency of Math.sqrt on Intel platforms.
2802 Remove static initializers in v8. (issue 1859)
2804 Add explicit dependency on v8_base in the GYP-based build.
2806 Performance and stability improvements on all platforms.
2809 2012-03-12: Version 3.9.17
2811 Fixed VFP detection through compiler defines. (issue 1996)
2813 Add Code-related fields to postmortem metadata.
2815 Performance and stability improvements on all platforms.
2818 2012-03-09: Version 3.9.16
2820 Added basic interface inference for modules (behind the --harmony flag).
2822 Added Object.is, Number.isFinite, Number.isNaN.
2824 Updated the Unicode tables to Unicode version 6.1.0.
2826 Performance and stability improvements on all platforms.
2829 2012-03-06: Version 3.9.15
2831 Fix the heap profiler crash caused by memory layout changes between
2834 Fix Error.prototype.toString to throw TypeError. (issue 1980)
2836 Fix double-rounding in strtod for MinGW. (issue 1062)
2838 Fix corrupted snapshot serializaton on ia32. (Chromium issue v8/1985)
2840 Performance and stability improvements on all platforms.
2843 2012-03-01: Version 3.9.14
2845 Performance and stability improvements on all platforms.
2848 2012-02-29: Version 3.9.13
2850 Added code kind check before preparing for OSR. (issue 1900, 115073)
2852 Fixed issue 1802: Pass zone explicitly to zone-allocation on x64 and
2855 Ported string construct stub to x64. (issue 849)
2857 Performance and stability improvements on all platforms.
2860 2012-02-28: Version 3.9.12
2862 Fixed the negative lookup stub to handle deleted entries in a
2863 dictionary. (issue 1964)
2865 Added a new API where the host can supply a callback function. The
2866 callback function can resolve the location of a return address on stack
2867 to the location where a return-address rewriting profiler stashed the
2868 original return address.
2870 Fixed Chromium issue http://crbug.com/115646: When compiling for-in
2871 pass correct context value to the increment instruction.
2873 Fixed issue 1853: Update breakpoints set with partial file name after
2877 2012-02-27: Version 3.9.11
2879 Made 'module' a context-sensitive keyword (V8 issue 1957).
2882 2012-02-24: Version 3.9.10
2884 Fixed V8 issues 1322, 1772 and 1969.
2886 Conformance improvements.
2888 Performance and stability improvements on all platforms.
2891 2012-02-23: Version 3.9.9
2893 Supported fast case for-in in Crankshaft.
2895 Sped up heap snapshot serialization and dominators construction.
2897 Randomized allocation addresses on windows. (Chromium issue 115151)
2899 Fixed compilation with MinGW-w64. (issue 1943)
2901 Fixed incorrect value of assignments to non-extensible properties.
2903 Fixed a crash bug in generated code on ia32.
2905 Performance and stability improvements on all platforms.
2908 2012-02-21: Version 3.9.8
2910 Fixed memory leak and missing #include in StartupDataDecompressor
2913 Renamed static methods to avoid shadowing virtual methods and fix Clang
2914 C++11 compile error.
2916 Fixed sequence of element access in array builtins (issue 1790).
2918 Performance and stability improvements on all platforms.
2921 2012-02-16: Version 3.9.7
2923 Fixed V8 issues 1322, 1878, 1942, 1945 and Chromium issue 113924.
2925 Fixed GCC-4.7 warnings.
2927 Added Navier-Stokes benchmark.
2929 Performance and stability improvements on all platforms.
2932 2012-02-14: Version 3.9.6
2934 Fixed template-related linker error. (issue 1936)
2936 Allowed inlining of functions containing object literals. (issue 1322)
2938 Added --call-graph-size option to tickprocessor. (issue 1937)
2940 Heap Snapshot maximum size limit is too low for really big apps. At the
2941 moment the limit is 256MB. (Chromium issue 113015)
2943 Performance and stability improvements on all platforms.
2946 2012-02-09: Version 3.9.5
2948 Removed unused command line flags.
2950 Performance and stability improvements on all platforms.
2953 2012-02-08: Version 3.9.4
2955 Properly initialize element-transitioning array literals on ARM.
2958 Bug fixes on all platforms.
2961 2012-02-07: Version 3.9.3
2963 When rethrowing an exception, print the stack trace of its original
2964 site instead of rethrow site (Chromium issue 60240).
2966 Increased size of small stacks from 32k to 64k to avoid hitting limits
2967 in Chromium (Chromium issue 112843).
2970 2012-02-06: Version 3.9.2
2972 Added timestamp to --trace-gc output. (issue 1932)
2974 Heap profiler reports implicit references.
2976 Optionally export metadata with libv8 to enable debuggers to inspect V8
2980 2012-02-02: Version 3.9.1
2982 Fixed memory leak in NativeObjectsExplorer::FindOrAddGroupInfo
2983 (Chromium issue 112315).
2985 Fixed a crash in dev tools (Chromium issue 107996).
2987 Added 'dependencies_traverse': 1 to v8 GYP target.
2989 Performance and stability improvements on all platforms.
2992 2012-02-01: Version 3.9.0
2994 Reduced memory use immediately after starting V8.
2996 Stability fixes and performance improvements on all platforms.
2999 2012-01-26: Version 3.8.9
3001 Flush number string cache on GC (issue 1605).
3003 Provide access to function inferred name with
3004 v8::Function::GetInferredName in V8 public API.
3006 Fix building with Clang (issue 1912).
3008 Reduce the space used by the stack for the profiling thread.
3010 Fix misleading documentation of v8::Locker (issue 542).
3012 Introduce readbinary function in d8 to read binary files.
3014 Performance and stability improvements on all platforms.
3017 2012-01-23: Version 3.8.8
3019 Limited number of loop iterations in Heap::ReserveSpace
3020 (Chromium issue 99027).
3022 Fixed solaris build (VirtualMemory) (issue 1761).
3024 Fixed strict vs. non-strict handling of function proxies in
3025 higher-order array and string methods.
3027 Enabled asynchronous remote debugging with d8 (issue 1691).
3029 Stability and performance improvements on all platforms.
3032 2012-01-19: Version 3.8.7
3034 Ensure that LRandom restores rsi after call to the C function on x64.
3035 (Chromium issue http://crbug.com/110509)
3037 Fixing include issues on *bsd when building with scons.
3040 Provide a switch to specify -fno-strict-aliasing
3043 Move WIN32 define from standalone.gypi to common.gypi
3046 Fix corner-case in heap size estimation.
3049 Fix and enable NEW_NON_STRICT_FAST ArgumentsAccess stub on x64.
3052 Performance improvements and bug fixes.
3055 2012-01-16: Version 3.8.6
3057 Add primitive WebGL array support to d8.
3059 Improve heap size estimation (issue 1893).
3061 Hash collision DOS workaround extended from string keys
3064 Provide an API for iterating through all external strings referenced
3067 Adjust position recorded for call expressions. http://crbug.com/109195
3069 Fix GC crash related to instanceof. http://crbug.com/109448
3071 Performance improvements and bug fixes.
3074 2012-01-05: Version 3.8.5
3076 Fix broken test that assumes that no GC can clear the regexp cache (GC
3077 can happen at any time due to Crankshaft).
3079 Fix handling of bogus receivers for Harmony collections. (issue 1884)
3081 Add netbsd support to gyp build.
3083 Determine page size at runtime on posix platforms.
3085 Ensure that store buffer filtering hash sets are cleared after
3086 StoreBuffer::Filter.
3088 Randomize the seed used for string hashing. This helps guard against
3089 CPU-eating DOS attacks against node.js servers. Based on code from
3090 Bert Belder. This version only solves the issue for those that compile
3091 V8 themselves or those that do not use snapshots. A snapshot-based
3092 precompiled V8 will still have predictable string hash codes.
3094 Implement callback when script finishes running in V8 API.
3096 Improve performance of Math.min and Math.max for the case of two
3097 arguments. (issue 1325)
3100 2012-01-02: Version 3.8.4
3102 Performance improvements for large Smi-only arrays.
3104 Fixed InternalArrays construction. (issue 1878)
3107 2011-12-27: Version 3.8.3
3109 Avoid embedding new space objects into code objects in the lithium gap
3110 resolver. (chromium:108296)
3112 Bug fixes and performance optimizations on all platforms.
3115 2011-12-21: Version 3.8.2
3117 Add max optimization flag to v8 gyp build to ensure V8 is always built
3118 fully optimized in Chrome.
3120 MIPS: Bring MIPS to parity with other platforms.
3122 Optimizations and stability improvements on all platforms.
3125 2011-12-19: Version 3.8.1
3127 Fixed GCC 4.7 warnings. Patch from Tobias Burnus.
3129 Stability improvements on all platforms.
3132 2011-12-13: Version 3.8.0
3134 Fixed handling of arrays in DefineOwnProperty. (issue 1756)
3136 Sync parser and preparser on do-while and return statements.
3139 Fixed another corner case for DefineOwnProperty on arrays (issue 1756).
3141 Stability and performance improvements on all platforms.
3144 2011-12-01: Version 3.7.12
3146 Increase tick interval for the android platform.
3148 Fix a bug in the register allocator. (chromium:105112)
3150 Fix handling of recompiling code. (chromium:105375, v8:1782)
3152 Start incremental marking on idle notification. (v8:1458)
3154 Build fixes for various platforms.
3156 Various performance improvements.
3159 2011-11-29: Version 3.7.11
3161 Fixed bug when generating padding to ensure space for lazy
3165 Further reduced pause times due to GC.
3167 Stability and performance improvements on all platforms.
3170 2011-11-23: Version 3.7.10
3172 Set maximum length of FixedArray in terms of elements instead an
3173 absolute number of bytes.
3174 (Chromium issue 103103)
3176 Stability and performance improvements on all platforms.
3179 2011-11-21: Version 3.7.9
3181 Removed exit-time destructors.
3183 Stability and performance improvements on all platforms.
3186 2011-11-17: Version 3.7.8
3188 Removed hidden prototype from builtins, i.e., deleting an overridden
3189 function on builtins will not make the original function reappear.
3191 Added NetBSD support for scons build.
3193 Performance improvements on all platforms.
3196 2011-11-14: Version 3.7.7
3198 Fix missing fast property accessors in heap snapshots.
3202 2011-11-11: Version 3.7.6
3204 Fixed filtering of store buffer for large object pages.
3207 Fixed generated hash function on all platforms.
3210 Fixed Heap::Shrink to ensure that it does not free pages that are
3212 (Chromium issue 100414)
3214 Stability and performance improvements on all platforms.
3217 2011-11-10: Version 3.7.5
3219 Added initial gyp infrastructure for MIPS.
3221 Implemented performance improvements to the incremental garbage
3224 Added optimizations and stability improvements on all platforms.
3227 2011-11-07: Version 3.7.4
3229 Proper "libv8.so.3.7.4" SONAME for Linux shared library (issue 1786).
3231 Fix Harmony sets and maps to allow null and undefined as keys
3232 (still hidden behind --harmony flag) (issue 1622).
3234 Implement VirtualMemory on FreeBSD to fix build (issue 1807).
3236 Enable VFP instructions for Android.
3238 Fix error handling in Date.prototype.toISOString (issue 1792).
3240 Bug fixes and performance improvements for all platforms.
3242 Not officially supported but noteworthy: Crankshaft for MIPS :-)
3245 2011-10-28: Version 3.7.3
3247 Slight deoptimization as a workaround for issue with jslint: Issue
3251 2011-10-27: Version 3.7.2
3253 Fix bug in deoptimization. Known issue with jslint: Issue 1789.
3256 2011-10-26: Version 3.7.1
3258 Achieved 33% speedup in debug-mode tests.
3260 Removed special casing of calls to RegExp test and exec methods with no
3261 argument. Now matches new JSC behaviour. crbug.com/75740.
3263 Return the empty string on cyclic references in toString (ES5
3266 Fixed bug triggered by JSBeautifier. crbug.com/100409.
3268 Made Math.random state per-context instead of per-process (issue 864).
3270 Fixed stack traces to skip native functions.
3272 Make snapshots (new contexts) smaller and faster.
3274 Fixed handling of Function.apply for non-array arguments.
3276 Fixed evaluation order in defineProperties to match FireFox.
3278 Fixed handling of non-object receivers for array builtins,
3281 Multiple fixes to improve compliance with test262.
3283 Fixed compatibility with older Android releases.
3285 Fixed compilation with gcc-4.5.3.
3287 Improved performance of WriteUtf8, issue 1665.
3289 Made native syntax an early error in the preparser.
3291 Fixed issues 793 and 893 relating to Function.prototype.bind.
3293 Improved let, const, Set and Map support and other Harmony features
3294 (behind the --harmony flag).
3296 Changed evaluation order for > and <= to match ES5 instead of ES3.
3298 Bug fixes and performance improvements on all platforms.
3301 2011-10-13: Version 3.7.0
3303 Fixed array handling for Object.defineOwnProperty (ES5 conformance).
3305 Fixed issue 1757 (string slices of external strings).
3307 Fixed issue 1759 (ARM).
3309 Added flag --noclever-optimizations to disable some things that
3310 caused trouble in the past.
3312 Added flag --stress-compaction for testing.
3314 Added flag --harmony to activate all experimental Harmony features.
3317 2011-10-10: Version 3.6.6
3319 Added a GC pause visualization tool.
3321 Added presubmit=no and werror=no flags to Makefile.
3323 ES5/Test262 conformance improvements.
3325 Fixed compilation issues with GCC 4.5.x (issue 1743).
3327 Bug fixes and performance improvements on all platforms.
3330 2011-10-05: Version 3.6.5
3332 New incremental garbage collector.
3334 Removed the hard heap size limit (soft heap size limit is still
3335 700/1400Mbytes by default).
3337 Implemented ES5 generic Array.prototype.toString (Issue 1361).
3339 V8 now allows surrogate pair codes in decodeURIComponent (Issue 1415).
3341 Fixed x64 RegExp start-of-string bug (Issues 1746, 1748).
3343 Fixed propertyIsEnumerable for numeric properties (Issue 1692).
3345 Fixed the MinGW and Windows 2000 builds.
3347 Fixed "Prototype chain is not searched if named property handler does
3348 not set a property" (Issue 1636).
3350 Made the RegExp.prototype object be a RegExp object (Issue 1217).
3352 Disallowed future reserved words as labels in strict mode.
3354 Fixed string split to correctly coerce the separator to a string
3357 API: Added an optional source length field to the Extension
3360 API: Added Debug::DisableAgent to match existing Debug::EnableAgent
3363 Added "native" target to Makefile for the benefit of Linux distros.
3365 Fixed: debugger stops stepping outside evaluate (Issue 1639).
3367 More work on ES-Harmony proxies. Still hidden behind a flag.
3369 Bug fixes and performance improvements on all platforms.
3372 2011-09-15: Version 3.6.4
3374 Fixed d8's broken readline history.
3376 Removed the need for code delete events in CPU profiler (Issue 1466).
3378 Fixed debugger stepping next with trycatch recursion (Issue 1639).
3380 Fixing parallel execution in d8 (with -p) and some memory leaks.
3382 Support for precise stepping in functions compiled before debugging was
3386 2011-09-13: Version 3.6.3
3388 Implemented better support of typed arrays in the d8 shell.
3390 Bug fixes and performance improvements on all platforms.
3393 2011-09-08: Version 3.6.2
3395 Added "dependencies" target to top-level Makefile.
3397 Added ability to turn profiler on/off in d8.
3399 Added "soname_version" parameter to common.gypi, v8.gyp, and Makefile.
3401 Fixed several crash bugs.
3404 2011-09-07: Version 3.6.1
3406 Fixed a bug in abrupt exit from with or catch inside finally.
3408 Fixed possible crash in FixedDoubleArray::Initialize() (Chromium
3411 Fixed a bug in Page::GetRegionMaskForSpan (Chromium issue 94425).
3413 Fixed a few clang warnings (which -Werror treated as errors).
3415 Performance improvements on all platforms.
3418 2011-09-05: Version 3.6.0
3420 Fixed a bug when optimizing named function expression (issue 1647).
3422 Fixed a bug when optimizing f.call.apply (issue 1650).
3424 Made arguments and caller always be null on native functions
3425 (issues 1548 and 1643).
3427 Fixed issue 1648 (cross-compiling x64 targeting ia32).
3429 Fixed issue 371 (d8 printing of strings containing \0).
3431 Fixed order of evaluation in arguments to parseInt (issue 1649).
3433 Fixed a problem with large heap snapshots in Chrome DevTools
3434 (issue 1658, chromium issue 89268).
3436 Upped default maximum heap size from 512M to 700M.
3439 2011-08-31: Version 3.5.10
3441 Added dependency of v8_base on WinSocket2 Windows library in
3447 2011-08-29: Version 3.5.9
3449 Made FromPropertyDescriptor not trigger inherited setters.
3451 Fixed .gyp files to work on the ARM simulator.
3453 Fixed shared library build warnings for MSVS.
3456 2011-08-24: Version 3.5.8
3458 Added V8EXPORT attributes for v8::Array::CheckCast and
3459 v8::Number::CheckCast.
3461 Made a slight API change enabling opting out from null termination
3462 in String::Write*().
3464 Fixed arm build for gcc-4.6.
3467 2011-08-22: Version 3.5.7
3469 Make scanner handle invalid unicode escapes in identifiers correctly.
3471 Make regexp flag parsing stricter.
3473 Fix several memory leaks.
3476 2011-08-17: Version 3.5.6
3478 Fixed issue that could cause crashes when running with --heap-stats.
3480 Fixed compilation on Linux 2.6.9 and older.
3482 Fixed live-object-list to work with isolates.
3484 Fixed memory leaks in zones and isolates.
3486 Fixed a performance regression for TypedArrays on x64.
3488 Stability improvements on all platforms.
3491 2011-08-15: Version 3.5.5
3493 Fixed bugs involving negative zero and the optimizing compiler.
3495 Fixed optimized version of Function.apply(x, arguments). (issue 1592)
3497 Eliminated uses of deprecated ARM instructions.
3499 Sped up Math.floor by using SSE 4.1 roundsd instruction on ia32.
3501 Removed restriction on the size of disassembled code that is printed.
3504 2011-08-10: Version 3.5.4
3506 Added a preliminary implementation of ES Harmony weak maps. Weak
3507 maps can be enabled by the flag --harmony-weakmaps.
3509 Introduced a toplevel Makefile to support GYP-based building. GYP
3510 can be obtained from http://gyp.googlecode.com.
3512 Fixed a bug in the length property of functions created by
3513 Function.prototype.bind.
3515 Reduced malloc heap allocation on process startup.
3517 Several important code generation bug fixes.
3519 Performance improvements on all platforms.
3522 2011-08-03: Version 3.5.3
3524 MIPS: Port of fix to ClassOf check from ARM.
3525 Patch from Paul Lind <plind44@gmail.com>.
3527 Stopped using mprotect on Cygwin.
3528 Avoided uninitialized member warning on gcc 4.3.4
3529 Both patches by Bert Belder.
3531 Bug fixes and performance improvements on all platforms.
3534 2011-08-01: Version 3.5.2
3536 Performance improvements on all platforms.
3539 2011-07-28: Version 3.5.1
3541 Fixed setting the readonly flag on the prototype property using the
3542 API call FunctionTemplate::SetPrototypeAttributes (issue 1539).
3544 Changed the tools/test.py script to use d8 instead of shell for
3547 Fixed crash in ToBooleanStub when GC happens during invocation.
3549 Enabled automatic unboxing of double arrays.
3551 Performance improvements on all platforms.
3554 2011-07-25: Version 3.5.0
3556 Implemented Object.prototype.{hasOwnProperty, propertyIsEnumerable} for
3559 Removed logging to memory support.
3561 Bugfixes and performance work.
3564 2011-07-20: Version 3.4.14
3566 Fix the debugger for strict-mode functions. (Chromium issue 89236)
3568 Add GetPropertyAttribute method for Object in the API. (Patch by
3571 Fix -Wunused-but-set-variable for gcc-4.6 on x64. (Issue 1291)
3574 2011-07-18: Version 3.4.13
3576 Improved debugger support to allow inspection of optimized frames (issue
3579 Fixed a bug in prototype transitions cache clearing introduced by r8165.
3581 Fixed shortcutting bug in HInferRepresentation. Patch by Andy Wingo.
3583 Fixed a memory leak in sample/shell.cc (dispose semaphores).
3585 Simplified HClampToUint8. Patch by Andy Wingo.
3587 Exposed APIs for detecting boxed primitives, native errors. Patch by
3590 Added map check for COW elements to crankshaft array handling code
3593 Sample shell and (a light version of) D8 links against a shared library
3596 Fixed bug in array filter and reduce functions (issue 1559).
3598 Avoid TLS load in AstNode constructor.
3600 Introduced a random entropy source which can optionally be provided at
3601 initialization. (Chromium issue 89462).
3604 2011-07-13: Version 3.4.12
3606 Added --prof profiling option to d8 shell.
3608 Fixed a bug where reading a directory in d8 shell hangs (issue 1533).
3610 Fixed a potential assertion failure in const declarations.
3612 Fixed an assertion failure in descriptor arrays (issue 1526).
3614 Enabled fast thread-local storage by default on supported platforms.
3616 Improved reporting of source position for global variable loads
3620 2011-07-11: Version 3.4.11
3622 Fixed MinGW32 build.
3624 Fixed a GC bug with RegExp code flushing.
3626 Implemented Object.defineProperty for proxies.
3628 Fixed a bug in for/in iteration of arguments objects (issue 1531).
3630 Added debugger support for inspecting optimized frames (issue 1140).
3632 Allowed JSObject::PreventExtensions to work for arguments objects.
3634 Bugfixes and performance work.
3637 2011-07-06: Version 3.4.10
3639 Fixed debugger not breaking on certain "if" statements (issue 1523).
3641 Fixed assertion failure in runtime profiler when running on IA32
3642 without snapshot (issue 1522).
3644 Fixed ABI for API calls on IA32 (for clang compatibility).
3646 Introduced code flushing of RegExp code to free memory used by
3649 Fixed linux-tick-processor built wrong version of v8 (issue 1532).
3651 Fixed assertion failure in v8::TryCache::StackTrace (issue 1529).
3653 Performance improvements on all platforms.
3656 2011-07-04: Version 3.4.9
3658 Added support for debugger inspection of locals in optimized frames
3661 Fixed SConstruct to pass correct defines to samples/preparser when
3662 building with library=shared.
3664 Made date parser handle ES5 Date Time Strings correctly (issue 1498).
3666 Fixed a bug in Object.defineProperty on the arguments object.
3668 Performance improvements on all platforms.
3671 2011-06-29: Version 3.4.8
3673 Ensure 16-byte stack alignment on Solaris (issue 1505).
3675 Fix "illegal access" when calling parseInt with a radix
3676 that is not a smi. (issue 1246).
3679 2011-06-27: Version 3.4.7
3681 Fixed 64-bit build on FreeBSD.
3683 Added API to set the property attributes for the prototype
3684 property on functions created from FunctionTemplates.
3686 Bugfixes and performance work.
3689 2011-06-22: Version 3.4.6
3691 Lowered limit on code space for systems with low memory supply.
3693 Allowed compiling v8_shell with the 'host' toolset (issue 82437).
3695 Extended setBreakpoint API to accept partial script name (issue 1418).
3697 Made multi-line comments not count when deciding whether the '-->'
3698 comment starter is first on a line. This matches Safari.
3700 Made handling of non-array recievers in Array length setter correct
3703 Added ability to heap profiler to iterate over snapshot's node
3707 2011-06-20: Version 3.4.5
3709 Fixed issues 794, 1097, 1215(partial), 1417, 1435, 1472, 1473,
3712 Improved code generation for !0 and !1.
3714 Reduced memory usage for regular expressions with nested qualifiers.
3717 Fixed V8 to count line terminators in multi-line comments.
3718 (Chromium issue 86431)
3720 Fixed disassembler=on option for release-mode builds. (issue 1473)
3722 Performance improvements on all platforms.
3725 2011-06-15: Version 3.4.4
3727 Added snapshot compression support and --stress-opt flag to d8.
3729 Improved performance of try/catch.
3731 Several GYP-related changes: Added support for building Xcode project
3732 files. Make the ARM simulator build with GYP again. Generate Makefiles
3733 for all architectures on Linux.
3735 Fixed Array.prototype.{reduce,reduceRight} to pass undefined as the
3736 receiver for strict mode callbacks. (issue 1436)
3738 Fixed a bug where an array load was incorrectly hoisted by GVN.
3740 Handle 'undefined' correctly when === has been specialized for doubles.
3743 Corrected the limit of local variables in an optimized function from 64
3746 Correctly set ReadOnly flag on indexed properties when using the API Set
3747 method. (issue 1470)
3749 Give the correct error message when Object.isExtensible is called on a
3750 non-object. (issue 1452)
3752 Added GetOwnPropertyNames method for Object in the API. Patch by Peter
3755 Do not redefine properties unneccesarily in seal and freeze. (issue
3758 IsExecutionTerminating has an Isolate parameter now.
3760 Distinguish keyed loads with a symbol key from fast elements loads,
3761 avoiding some useless deoptimizations. (issue 1471)
3764 2011-06-08: Version 3.4.3
3766 Clear the global thread table when an isolate is disposed
3769 Converted time zone name to UTF8 on Windows (issue 1290).
3771 Limited the number of arguments in a function call to 32766
3774 Compress sources of JS libraries in addition to the snapshot.
3776 Fixed a bug in Lithium environment iteration.
3778 Performance improvements on all platforms.
3781 2011-06-06: Version 3.4.2
3783 More work on ES-Harmony proxies. Still hidden behind a flag.
3785 Fixed some crash bugs and improved performance.
3787 Fixed building with gdb debugging support.
3789 Do not install SIGPROF handler until it is needed.
3791 Added DateTimeFormat to i18n API.
3793 Fixed compilation on OpenBSD.
3795 Take the ulimit into account when sizing the heap. OpenBSD users
3796 may still have to increase the default ulimit to run heavy pages in
3800 2011-06-01: Version 3.4.1
3802 Fixed JSON stringify issue with arrays.
3804 Changed calls to JS builtins to be passed undefined when called with
3807 Implemented the set trap for Harmony proxies. Proxies still need to
3808 be enabled with the --harmony-proxies flag.
3811 2011-05-30: Version 3.4.0
3813 Changed calls to undefined property setters to not throw (issue 1355).
3815 Made RegExp objects not callable.
3817 Fixed issues on special case large JSON strings in new json parser
3818 (issues http://crbug.com/83877 and http://crbug.com/84186).
3820 Performance improvements on all platforms.
3823 2011-05-25: Version 3.3.10
3825 Fixed calls of strict mode function with an implicit receiver.
3827 Fixed fast handling of arrays to properly deal with changes to the
3828 Object prototype (issue 1403).
3830 Changed strict mode poison pill to be the same type error function
3833 Fixed a debug crash in arguments object handling (issue 1227).
3835 Fixed a bug in deoptimization on x64 (issue 1404).
3837 Performance improvements and bug fixes on all platforms.
3840 2011-05-23: Version 3.3.9
3842 Added DateTimeFormat class to experimental i18n API.
3844 Extended preparser to give early errors for some strict mode
3847 Removed legacy execScript function from V8.
3849 Extended isolate API with the ability to add embedder-specific
3852 Added basic support for polymorphic loads from JS and external
3855 Fixed bug in handling of switch statements in the optimizing
3859 2011-05-18: Version 3.3.8
3861 Added MarkIndependent to the persistent handle API. Independent
3862 handles are independent of all other persistent handles and can be
3863 garbage collected more frequently.
3865 Implemented the get trap for Harmony proxies. Proxies are enabled
3866 with the --harmony-proxies flag.
3868 Performance improvements and bug fixes on all platforms.
3871 2011-05-16: Version 3.3.7
3873 Updated MIPS infrastructure files.
3875 Performance improvements and bug fixes on all platforms.
3878 2011-05-11: Version 3.3.6
3880 Updated MIPS infrastructure files.
3882 Added method IsCallable for Object to the API.
3883 Patch by Peter Varga.
3886 2011-05-09: Version 3.3.5
3888 Fixed build on FreeBSD. Patch by Akinori MUSHA.
3890 Added check that receiver is JSObject on API calls.
3892 Implemented CallAsConstructor method for Object in the API (Issue 1348).
3893 Patch by Peter Varga.
3895 Added CallAsFunction method to the Object class in the API (Issue 1336).
3896 Patch by Peter Varga.
3898 Added per-isolate locking and unlocking.
3900 Fixed bug in x64 >>> operator (Issue 1359).
3903 2011-05-04: Version 3.3.4
3905 Implemented API to disallow code generation from strings for a context
3908 Fixed bug with whitespaces in parseInt (issue 955).
3910 Fixed bug with == comparison of Date objects (issue 1356).
3912 Added GYP variables for ARM code generation:
3913 v8_can_use_vfp_instructions, v8_can_use_unaligned_accesses
3914 and v8_use_arm_eabi_hardfloat.
3917 2011-05-02: Version 3.3.3
3919 Added support for generating Visual Studio solution and project files
3922 Implemented support for ARM EABI calling convention variation where
3923 floating-point arguments are passed in registers (hardfloat).
3925 Added Object::HasOwnProperty() to the API.
3927 Added support for compressing startup data to reduce binary size. This
3928 includes build time support and an API for the embedder to decompress
3929 the startup data before initializing V8.
3931 Reduced the profiling hooks overhead from >400% to 25% when using
3934 Performance improvements and bug fixes on all platforms.
3937 2011-04-27: Version 3.3.2
3939 Fixed crash bug on ARM with no VFP3 hardware.
3941 Fixed compilation of V8 without debugger support.
3943 Improved performance on JSLint.
3945 Added support Float64 WebGL arrays.
3947 Fixed crash bug in regexp replace.
3950 2011-04-20: Version 3.3.1
3952 Reduced V8 binary size by removing virtual functions from hydrogen.
3954 Fixed crash bug on x64.
3956 Performance improvements on ARM and IA32.
3959 2011-04-18: Version 3.3.0
3961 Fixed bug in floating point rounding in Crankshaft on ARM
3964 Fixed a number of issues with running without VFPv3 support on ARM
3967 Introduced v8Locale.Collator, a partial implementation of Collator
3968 per last ECMAScript meeting + mailing list.
3970 Minor performance improvements and bug fixes.
3973 2011-04-13: Version 3.2.10
3975 Fixed bug in external float arrays on ARM (issue 1323).
3977 Minor performance improvements and bug fixes.
3980 2011-04-11: Version 3.2.9
3982 Removed support for ABI prior to EABI on ARM.
3984 Fixed multiple crash bugs.
3986 Added GCMole to the repository, a simple static analysis tool that
3987 searches for GC-unsafe evaluation order dependent callsites.
3989 Made preparser API be exported in shared libraries.
3991 Fixed multiple issues in EcmaScript 5 strict mode implementation.
3993 Fixed mutable __proto__ property if object is not extensible
3996 Fixed auto suspension of the sampler thread.
3999 2011-04-06: Version 3.2.8
4001 Exposed WebGL typed array constructors in the shell sample.
4003 Performance improvements on all platforms.
4006 2011-04-04: Version 3.2.7
4008 Disabled the original 'classic' V8 code generator. Crankshaft is
4009 now the default on all platforms.
4011 Changed the heap profiler to use more descriptive names.
4013 Performance and stability improvements to isolates on all platforms.
4016 2011-03-30: Version 3.2.6
4018 Fixed xcode build warning in shell.cc (out of order initialization).
4020 Fixed null-pointer dereference in the compiler when running without
4021 SSE3 support (Chromium issue 77654).
4023 Fixed x64 compilation error due to some dead code. (Issue 1286)
4025 Introduced scons target to build the preparser stand-alone example.
4027 Made FreeBSD build and pass all tests.
4030 2011-03-28: Version 3.2.5
4032 Fixed build with Irregexp interpreter (issue 1266).
4034 Added Crankshaft support for external arrays.
4036 Fixed two potential crash bugs.
4039 2011-03-23: Version 3.2.4
4041 Added isolates which allows several V8 instances in the same process.
4042 This is controlled through the new Isolate class in the API.
4044 Implemented more of EcmaScript 5 strict mode.
4046 Reduced the time it takes to make detailed heap snapshot.
4048 Added a number of commands to the ARM simulator and enhanced the ARM
4052 2011-03-17: Version 3.2.3
4054 Fixed a number of crash bugs.
4056 Fixed Array::New(length) to return an array with a length (issue 1256).
4058 Fixed FreeBSD build.
4060 Changed __defineGetter__ to not throw (matching the behavior of Safari).
4062 Implemented more of EcmaScript 5 strict mode.
4064 Improved Crankshaft performance on all platforms.
4067 2011-03-14: Version 3.2.2
4069 Fixed a number of crash and correctness bugs.
4071 Improved Crankshaft performance on all platforms.
4073 Fixed Crankshaft on Solaris/Illumos.
4076 2011-03-10: Version 3.2.1
4078 Fixed a number of crash bugs.
4080 Improved Crankshaft for x64 and ARM.
4082 Implemented more of EcmaScript 5 strict mode.
4085 2011-03-07: Version 3.2.0
4087 Fixed a number of crash bugs.
4089 Turned on Crankshaft by default on x64 and ARM.
4091 Improved Crankshaft for x64 and ARM.
4093 Implemented more of EcmaScript 5 strict mode.
4096 2011-03-02: Version 3.1.8
4098 Fixed a number of crash bugs.
4100 Improved Crankshaft for x64 and ARM.
4102 Implemented more of EcmaScript 5 strict mode.
4104 Fixed issue with unaligned reads and writes on ARM.
4106 Improved heap profiler support.
4109 2011-02-28: Version 3.1.7
4111 Fixed a number of crash bugs.
4113 Improved Crankshaft for x64 and ARM.
4115 Fixed implementation of indexOf/lastIndexOf for sparse
4116 arrays (http://crbug.com/73940).
4118 Fixed bug in map space compaction (http://crbug.com/59688).
4120 Added support for direct getter accessors calls on ARM.
4123 2011-02-24: Version 3.1.6
4125 Fixed a number of crash bugs.
4127 Added support for Cygwin (issue 64).
4129 Improved Crankshaft for x64 and ARM.
4131 Added Crankshaft support for stores to pixel arrays.
4133 Fixed issue in CPU profiler with Crankshaft.
4136 2011-02-16: Version 3.1.5
4138 Change RegExp parsing to disallow /(*)/.
4140 Added GDB JIT support for ARM.
4142 Fixed several crash bugs.
4144 Performance improvements on the IA32 platform.
4147 2011-02-14: Version 3.1.4
4149 Fixed incorrect compare of prototypes of the global object (issue
4152 Fixed a bug in optimizing calls to global functions (issue 1106).
4154 Made optimized Function.prototype.apply safe for non-JSObject first
4155 arguments (issue 1128).
4157 Fixed an error related to element accessors on Object.prototype and
4158 parser errors (issue 1130).
4160 Fixed a bug in sorting an array with large array indices (issue 1131).
4162 Properly treat exceptions thrown while compiling (issue 1132).
4164 Fixed bug in register requirements for function.apply (issue 1133).
4166 Fixed a representation change bug in the Hydrogen graph construction
4169 Fixed the semantics of delete on parameters (issue 1136).
4171 Fixed a optimizer bug related to moving instructions with side effects
4174 Added support for the global object in Object.keys (issue 1150).
4176 Fixed incorrect value for Math.LOG10E
4177 (issue http://code.google.com/p/chromium/issues/detail?id=72555)
4179 Performance improvements on the IA32 platform.
4181 Implement assignment to undefined reference in ES5 Strict Mode.
4184 2011-02-09: Version 3.1.3
4186 Fixed a bug triggered by functions with huge numbers of declared
4189 Fixed zap value aliasing a real object - debug mode only (issue 866).
4191 Fixed issue where Array.prototype.__proto__ had been set to null
4194 Fixed stability bugs in Crankshaft for x86.
4197 2011-02-07: Version 3.1.2
4199 Added better security checks when accessing properties via
4200 Object.getOwnPropertyDescriptor.
4202 Fixed bug in Object.defineProperty and related access bugs (issues
4203 992, 1083 and 1092).
4205 Added LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to ease
4206 copyright notice generation for embedders.
4209 2011-02-02: Version 3.1.1
4211 Perform security checks before fetching the value in
4212 Object.getOwnPropertyDescriptor.
4214 Fixed a bug in Array.prototype.splice triggered by passing no
4217 Fixed bugs in -0 in arithmetic and in Math.pow.
4219 Fixed bugs in the register allocator and in switching from optimized
4220 to unoptimized code.
4223 2011-01-31: Version 3.1.0
4225 Performance improvements on all platforms.
4228 2011-01-28: Version 3.0.12
4230 Added support for strict mode parameter and object property
4233 Fixed a couple of crash bugs.
4236 2011-01-25: Version 3.0.11
4238 Fixed a bug in deletion of lookup slots that could cause global
4239 variables to be accidentally deleted (http://crbug.com/70066).
4241 Added support for strict mode octal literal verification.
4243 Fixed a couple of crash bugs (issues 1070 and 1071).
4246 2011-01-24: Version 3.0.10
4248 Fixed External::Wrap for 64-bit addresses (issue 1037).
4250 Fixed incorrect .arguments variable proxy handling in the full
4251 code generator (issue 1060).
4253 Introduced partial strict mode support.
4255 Changed formatting of recursive error messages to match Firefox and
4256 Safari (issue http://crbug.com/70334).
4258 Fixed incorrect rounding for float-to-integer conversions for external
4259 array types, which implement the Typed Array spec
4260 (issue http://crbug.com/50972).
4262 Performance improvements on the IA32 platform.
4265 2011-01-19: Version 3.0.9
4267 Added basic GDB JIT Interface integration.
4269 Make invalid break/continue statements a syntax error instead of a
4273 2011-01-17: Version 3.0.8
4275 Exposed heap size limit to the heap statistics gathered by
4276 the GetHeapStatistics API.
4278 Wrapped external pointers more carefully (issue 1037).
4280 Hardened the implementation of error objects to avoid setters
4281 intercepting the properties set then throwing an error.
4283 Avoided trashing the FPSCR when calculating Math.floor on ARM.
4285 Performance improvements on the IA32 platform.
4288 2011-01-10: Version 3.0.7
4290 Stopped calling inherited setters when creating object literals
4293 Changed interpretation of malformed \c? escapes in RegExp to match
4296 Enhanced the command-line debugger interface and fixed some minor
4297 bugs in the debugger.
4299 Performance improvements on the IA32 platform.
4302 2011-01-05: Version 3.0.6
4304 Allowed getters and setters on JSArray elements (issue 900).
4306 Stopped JSON objects from hitting inherited setters (part of
4309 Allowed numbers and strings as names of getters/setters in object
4310 initializer (issue 820).
4312 Added use_system_v8 option to gyp (off by default), to make it easier
4313 for Linux distributions to ship with system-provided V8 library.
4315 Exported external array data accessors (issue 1016).
4317 Added labelled thread names to help with debugging (on Linux).
4320 2011-01-03: Version 3.0.5
4322 Fixed a couple of cast errors for gcc-3.4.3.
4324 Performance improvements in GC and IA32 code generator.
4327 2010-12-21: Version 3.0.4
4329 Added Date::ResetCache() to the API so that the cached values in the
4330 Date object can be reset to allow live DST / timezone changes.
4332 Extended existing support for printing (while debugging) the contents
4333 of objects. Added support for printing objects from release builds.
4335 Fixed V8 issues 989, 1006, and 1007.
4338 2010-12-17: Version 3.0.3
4340 Reapplied all changes for version 3.0.1.
4342 Improved debugger protocol for remote debugging.
4344 Added experimental support for using gyp to generate build files
4347 Fixed implementation of String::Write in the API (issue 975).
4350 2010-12-15: Version 3.0.2
4352 Revert version 3.0.1 and patch 3.0.1.1.
4355 2010-12-13: Version 3.0.1
4357 Added support for an experimental internationalization API as an
4358 extension. This extension is disabled by default but can be enabled
4359 when building V8. The ECMAScript internationalization strawman is
4360 at http://wiki.ecmascript.org/doku.php?id=strawman:i18n_api.
4362 Made RegExp character class parsing stricter. This mirrors a change
4363 to RegExp parsing in WebKit.
4365 Fixed a bug in Object.defineProperty when used to change attributes
4366 of an existing property. It incorrectly set the property value to
4367 undefined (issue 965).
4369 Fixed several different compilation failures on various platforms
4370 caused by the 3.0.0 release.
4372 Optimized Math.pow so it can work on unboxed doubles.
4374 Sped up quoting of JSON strings by removing one traversal of the
4378 2010-12-07: Version 3.0.0
4380 Improved performance by (partially) addressing issue 957 on
4381 IA-32. Still needs more work for the other architectures.
4384 2010-11-29: Version 2.5.9
4386 Fixed crashes during GC caused by partially initialize heap
4389 Fixed bug in process sample that caused memory leaks.
4391 Improved performance on ARM by implementing missing stubs and
4394 Improved heap profiler support.
4396 Added separate seeding on Windows of the random number generator
4397 used internally by the compiler (issue 936).
4399 Exposed API for getting the name of the function used to construct
4402 Fixed date parser to handle one and two digit millisecond
4405 Fixed number parsing to disallow space between sign and
4409 2010-11-23: Version 2.5.8
4411 Removed dependency on Gay's dtoa.
4413 Improved heap profiler precision and speed.
4415 Reduced overhead of callback invocations on ARM.
4418 2010-11-18: Version 2.5.7
4420 Fixed obscure evaluation order bug (issue 931).
4422 Split the random number state between JavaScript and the private API.
4424 Fixed performance bug causing GCs when generating stack traces on
4425 code from very large scripts.
4427 Fixed bug in parser that allowed (foo):42 as a labelled statement
4430 Provide more accurate results about used heap size via
4433 Allow build-time customization of the max semispace size.
4435 Made String.prototype.split honor limit when separator is empty
4438 Added missing failure check after expecting an identifier in
4439 preparser (Chromium issue 62639).
4442 2010-11-10: Version 2.5.6
4444 Added support for VFP rounding modes to the ARM simulator.
4446 Fixed multiplication overflow bug (issue 927).
4448 Added a limit for the amount of executable memory (issue 925).
4451 2010-11-08: Version 2.5.5
4453 Added more aggressive GC of external objects in near out-of-memory
4456 Fixed a bug that gave the incorrect result for String.split called
4457 on the empty string (issue 924).
4460 2010-11-03: Version 2.5.4
4462 Improved V8 VFPv3 runtime detection to address issue 914.
4465 2010-11-01: Version 2.5.3
4467 Fixed a bug that prevents constants from overwriting function values
4468 in object literals (issue 907).
4470 Fixed a bug with reporting of impossible nested calls of DOM functions
4471 (issue http://crbug.com/60753).
4474 2010-10-27: Version 2.5.2
4476 Improved sampler resolution on Linux.
4478 Allowed forcing the use of a simulator from the build script
4479 independently of the host architecture.
4481 Fixed FreeBSD port (issue 912).
4483 Made windows-tick-processor respect D8_PATH.
4485 Implemented --noinline-new flag fully on IA32, X64 and ARM platforms.
4488 2010-10-20: Version 2.5.1
4490 Fixed bug causing spurious out of memory exceptions
4491 (issue http://crbug.com/54580).
4493 Fixed compilation error on Solaris platform (issue 901).
4495 Fixed error in strtod (string to floating point number conversion)
4496 due to glibc's use of 80-bit floats in the FPU on 32-bit linux.
4498 Adjusted randomized allocations of executable memory to have 64k
4499 granularity (issue http://crbug.com/56036).
4501 Supported profiling using kernel perf_events on linux. Added ll_prof
4502 script to tools and --ll-prof flag to V8.
4505 2010-10-18: Version 2.5.0
4507 Fixed bug in cache handling of lastIndex on global regexps
4508 (issue http://crbug.com/58740).
4510 Added USE_SIMULATOR macro that explicitly indicates that we wish to use
4511 the simulator as the execution engine (by Mark Lam <mark.lam@palm.com>
4512 from Hewlett-Packard Development Company, LP).
4514 Fixed compilation error on ARM with gcc 4.4 (issue 894).
4517 2010-10-13: Version 2.4.9
4519 Fixed a bug in the handling of conditional expressions in test
4520 contexts in compiler for top-level code.
4522 Added "//@ sourceURL" information to the StackTrace API.
4524 Exposed RegExp construction through the API.
4527 2010-10-04: Version 2.4.8
4529 Fixed a bug in ResumeProfilerEx causing it to not always write out the
4530 whole snapshot (issue 868).
4532 Performance improvements on all platforms.
4535 2010-09-30: Version 2.4.7
4537 Changed the command-line flag --max-new-space-size to be in kB and the
4538 flag --max-old-space-size to be in MB (previously they were in bytes).
4540 Added Debug::CancelDebugBreak to the debugger API.
4542 Fixed a bug in getters for negative numeric property names
4543 (https://bugs.webkit.org/show_bug.cgi?id=46689).
4545 Performance improvements on all platforms.
4548 2010-09-27: Version 2.4.6
4550 Fixed assertion failure related to copy-on-write arrays (issue 876).
4552 Fixed build failure of 64-bit V8 on Windows.
4554 Fixed a bug in RegExp (issue http://crbug.com/52801).
4556 Improved the profiler's coverage to cover more functions (issue 858).
4558 Fixed error in shift operators on 64-bit V8
4559 (issue http://crbug.com/54521).
4562 2010-09-22: Version 2.4.5
4564 Changed the RegExp benchmark to exercise the regexp engine on different
4565 inputs by scrambling the input strings.
4567 Fixed a bug in keyed loads on strings.
4569 Fixed a bug with loading global function prototypes.
4571 Fixed a bug with profiling RegExp calls (issue http://crbug.com/55999).
4573 Performance improvements on all platforms.
4576 2010-09-15: Version 2.4.4
4578 Fixed bug with hangs on very large sparse arrays.
4580 Now tries harder to free up memory when running out of space.
4582 Added heap snapshots to JSON format to API.
4584 Recalibrated benchmarks.
4587 2010-09-13: Version 2.4.3
4589 Made Date.parse properly handle TZ offsets (issue 857).
4591 Performance improvements on all platforms.
4594 2010-09-08: Version 2.4.2
4598 Fixed stack corruption bug.
4600 Fixed compilation for newer C++ compilers that found Operand(0)
4604 2010-09-06: Version 2.4.1
4606 Added the ability for an embedding application to receive a callback
4607 when V8 allocates (V8::AddMemoryAllocationCallback) or deallocates
4608 (V8::RemoveMemoryAllocationCallback) from the OS.
4610 Fixed several JSON bugs (including issue 855).
4612 Fixed memory overrun crash bug triggered during V8's tick-based
4615 Performance improvements on all platforms.
4618 2010-09-01: Version 2.4.0
4620 Fixed bug in Object.freeze and Object.seal when Array.prototype or
4621 Object.prototype are changed (issue 842).
4623 Updated Array.splice to follow Safari and Firefox when called
4624 with zero arguments.
4626 Fixed a missing live register when breaking at keyed loads on ARM.
4628 Performance improvements on all platforms.
4631 2010-08-25: Version 2.3.11
4633 Fixed bug in RegExp related to copy-on-write arrays.
4635 Refactored tools/test.py script, including the introduction of
4636 VARIANT_FLAGS that allows specification of sets of flags with which
4637 all tests should be run.
4639 Fixed a bug in the handling of debug breaks in CallIC.
4641 Performance improvements on all platforms.
4644 2010-08-23: Version 2.3.10
4646 Fixed bug in bitops on ARM.
4648 Build fixes for unusual compilers.
4650 Track high water mark for RWX memory.
4652 Performance improvements on all platforms.
4655 2010-08-18: Version 2.3.9
4657 Fixed compilation for ARMv4 on OpenBSD/FreeBSD.
4659 Removed specialized handling of GCC 4.4 (issue 830).
4661 Fixed DST cache to take into account the suspension of DST in
4662 Egypt during the 2010 Ramadan (issue http://crbug.com/51855).
4664 Performance improvements on all platforms.
4667 2010-08-16: Version 2.3.8
4669 Fixed build with strict aliasing on GCC 4.4 (issue 463).
4671 Fixed issue with incorrect handling of custom valueOf methods on
4672 string wrappers (issue 760).
4674 Fixed compilation for ARMv4 (issue 590).
4676 Improved performance.
4679 2010-08-11: Version 2.3.7
4681 Reduced size of heap snapshots produced by heap profiler (issue 783).
4683 Introduced v8::Value::IsRegExp method.
4685 Fixed CPU profiler crash in start / stop sequence when non-existent
4686 name is passed (issue http://crbug.com/51594).
4688 Introduced new indexed property query callbacks API (issue 816). This
4689 API is guarded by USE_NEW_QUERY_CALLBACK define and is disabled
4692 Removed support for object literal get/set with number/string
4695 Fixed handling of JSObject::elements in CalculateNetworkSize
4698 Allowed compiling with strict aliasing enabled on GCC 4.4 (issue 463).
4701 2010-08-09: Version 2.3.6
4703 RegExp literals create a new object every time they are evaluated
4706 Object.seal and Object.freeze return the modified object (issue 809).
4708 Fixed building using GCC 4.4.4.
4711 2010-08-04: Version 2.3.5
4713 Added support for ES5 property names. Object initialisers and
4714 dot-notation property access now allows keywords. Also allowed
4715 non-identifiers after "get" or "set" in an object initialiser.
4717 Randomized the addresses of allocated executable memory on Windows.
4720 2010-08-02: Version 2.3.4
4722 Fixed problems in implementation of ES5 function.prototype.bind.
4724 Fixed error when using apply with arguments object on ARM (issue 784).
4726 Added setting of global flags to debugger protocol.
4728 Fixed an error affecting cached results of sin and cos (issue 792).
4730 Removed memory leak from a boundary case where V8 is not initialized.
4732 Fixed issue where debugger could set breakpoints outside the body
4735 Fixed issue in debugger when using both live edit and step in features.
4737 Added Number-letter (Nl) category to Unicode tables. These characters
4738 can now be used in identifiers.
4740 Fixed an assert failure on X64 (issue 806).
4742 Performance improvements on all platforms.
4745 2010-07-26: Version 2.3.3
4747 Fixed error when building the d8 shell in a fresh checkout.
4749 Implemented Function.prototype.bind (ES5 15.3.4.5).
4751 Fixed an error in inlined stores on ia32.
4753 Fixed an error when setting a breakpoint at the end of a function
4754 that does not end with a newline character.
4756 Performance improvements on all platforms.
4759 2010-07-21: Version 2.3.2
4761 Fixed compiler warnings when building with LLVM.
4763 Fixed a bug with for-in applied to strings (issue 785).
4765 Performance improvements on all platforms.
4768 2010-07-19: Version 2.3.1
4770 Fixed compilation and linking with V8_INTERPRETED_REGEXP flag.
4772 Fixed bug related to code flushing while compiling a lazy
4773 compilable function (issue http://crbug.com/49099).
4775 Performance improvements on all platforms.
4778 2010-07-15: Version 2.3.0
4780 Added ES5 Object.seal and Object.isSealed.
4782 Added debugger API for scheduling debugger commands from a
4786 2010-07-14: Version 2.2.24
4788 Added API for capturing stack traces for uncaught exceptions.
4790 Fixed crash bug when preparsing from a non-external V8 string
4793 Fixed JSON.parse bug causing input not to be converted to string
4796 Added ES5 Object.freeze and Object.isFrozen.
4798 Performance improvements on all platforms.
4801 2010-07-07: Version 2.2.23
4803 API change: Convert Unicode code points outside the basic multilingual
4804 plane to the replacement character. Previous behavior was to silently
4805 truncate the value to 16 bits.
4807 Fixed crash: handle all flat string types in regexp replace.
4809 Prevent invalid pre-parsing data passed in through the API from
4812 Performance improvements on all platforms.
4815 2010-07-05: Version 2.2.22
4817 Added ES5 Object.isExtensible and Object.preventExtensions.
4819 Enabled building V8 as a DLL.
4821 Fixed a bug in date code where -0 was not interpreted as 0
4824 Performance improvements on all platforms.
4827 2010-06-30: Version 2.2.21
4829 Fixed bug in externalizing some ASCII strings (Chromium issue 47824).
4831 Updated JSON.stringify to floor the space parameter (issue 753).
4833 Updated the Mozilla test expectations to the newest version.
4835 Updated the ES5 Conformance Test expectations to the latest version.
4837 Updated the V8 benchmark suite.
4839 Provide actual breakpoints locations in response to setBreakpoint
4840 and listBreakpoints requests.
4843 2010-06-28: Version 2.2.20
4845 Fixed bug with for-in on x64 platform (issue 748).
4847 Fixed crash bug on x64 platform (issue 756).
4849 Fixed bug in Object.getOwnPropertyNames. (chromium issue 41243).
4851 Fixed a bug on ARM that caused the result of 1 << x to be
4852 miscalculated for some inputs.
4854 Performance improvements on all platforms.
4857 2010-06-23: Version 2.2.19
4859 Fixed bug that causes the build to break when profillingsupport=off
4862 Added expose-externalize-string flag for testing extensions.
4864 Resolve linker issues with using V8 as a DLL causing a number of
4865 problems with unresolved symbols.
4867 Fixed build failure for cctests when ENABLE_DEBUGGER_SUPPORT is not
4870 Performance improvements on all platforms.
4873 2010-06-16: Version 2.2.18
4875 Added API functions to retrieve information on indexed properties
4876 managed by the embedding layer. Fixes bug 737.
4878 Made ES5 Object.defineProperty support array elements. Fixes bug 619.
4880 Added heap profiling to the API.
4882 Removed old named property query from the API.
4884 Incremental performance improvements.
4887 2010-06-14: Version 2.2.17
4889 Improved debugger support for stepping out of functions.
4891 Incremental performance improvements.
4894 2010-06-09: Version 2.2.16
4896 Removed the SetExternalStringDiposeCallback API. Changed the
4897 disposal of external string resources to call a virtual Dispose
4898 method on the resource.
4900 Added support for more precise break points when debugging and
4903 Memory usage improvements on all platforms.
4906 2010-06-07: Version 2.2.15
4908 Added an API to control the disposal of external string resources.
4910 Added missing initialization of a couple of variables which makes
4911 some compilers complaint when compiling with -Werror.
4913 Improved performance on all platforms.
4916 2010-06-02: Version 2.2.14
4918 Fixed a crash in code generated for String.charCodeAt.
4920 Fixed a compilation issue with some GCC versions (issue 727).
4922 Performance optimizations on x64 and ARM platforms.
4925 2010-05-31: Version 2.2.13
4927 Implemented Object.getOwnPropertyDescriptor for element indices and
4928 strings (issue 599).
4930 Fixed bug for windows 64 bit C calls from generated code.
4932 Added new scons flag unalignedaccesses for arm builds.
4934 Performance improvements on all platforms.
4937 2010-05-26: Version 2.2.12
4939 Allowed accessors to be defined on objects rather than just object
4942 Changed the ScriptData API.
4945 2010-05-21: Version 2.2.11
4947 Fixed crash bug in liveedit on 64 bit.
4949 Use 'full compiler' when debugging is active. This should increase
4950 the density of possible break points, making single step more fine
4951 grained. This will only take effect for functions compiled after
4952 debugging has been started, so recompilation of all functions is
4953 required to get the full effect. IA32 and x64 only for now.
4955 Misc. fixes to the Solaris build.
4957 Added new flags --print-cumulative-gc-stat and --trace-gc-nvp.
4959 Added filtering of CPU profiles by security context.
4961 Fixed crash bug on ARM when running without VFP2 or VFP3.
4963 Incremental performance improvements in all backends.
4966 2010-05-17: Version 2.2.10
4968 Performance improvements in the x64 and ARM backends.
4971 2010-05-10: Version 2.2.9
4973 Allowed Object.create to be called with a function (issue 697).
4975 Fixed bug with Date.parse returning a non-NaN value when called on a
4976 non date string (issue 696).
4978 Allowed unaligned memory accesses on ARM targets that support it (by
4979 Subrato K De of CodeAurora <subratokde@codeaurora.org>).
4981 C++ API for retrieving JavaScript stack trace information.
4984 2010-05-05: Version 2.2.8
4986 Performance improvements in the x64 and ARM backends.
4989 2010-05-03: Version 2.2.7
4991 Added support for ES5 date time string format to Date.parse.
4993 Performance improvements in the x64 backend.
4996 2010-04-28: Version 2.2.6
4998 Added "amd64" as recognized architecture in scons build script
4999 (by Ryan Dahl <coldredlemur@gmail.com>).
5001 Fixed bug in String search and replace with very simple RegExps.
5003 Fixed bug in RegExp containing "\b^".
5005 Performance improvements on all platforms.
5008 2010-04-26: Version 2.2.5
5010 Various performance improvements (especially for ARM and x64)
5012 Fixed bug in CPU profiling (http://crbug.com/42137)
5014 Fixed a bug with the natives cache.
5016 Fixed two bugs in the ARM code generator that can cause
5019 Fixed a bug that may cause a wrong result for shift operations.
5022 2010-04-21: Version 2.2.4
5024 Fixed warnings on arm on newer GCC versions.
5026 Fixed a number of minor bugs.
5028 Performance improvements on all platforms.
5031 2010-04-14: Version 2.2.3
5033 Added stack command and mem command to ARM simulator debugger.
5035 Fixed scons snapshot and ARM build, and Windows X64 build issues.
5037 Performance improvements on all platforms.
5040 2010-04-12: Version 2.2.2
5042 Introduced new profiler API.
5044 Fixed random number generator to produce full 32 random bits.
5047 2010-04-06: Version 2.2.1
5049 Debugger improvements.
5054 2010-03-29: Version 2.2.0
5056 Fixed a few minor bugs.
5058 Performance improvements for string operations.
5061 2010-03-26: Version 2.1.10
5063 Fixed scons build issues.
5065 Fixed a couple of minor bugs.
5068 2010-03-25: Version 2.1.9
5070 Added API support for reattaching a global object to a context.
5072 Extended debugger API with access to the internal debugger context.
5074 Fixed Chromium crashes (issues http://crbug.com/39128 and
5075 http://crbug.com/39160)
5078 2010-03-24: Version 2.1.8
5080 Added fine-grained garbage collection callbacks to the API.
5082 Performance improvements on all platforms.
5085 2010-03-22: Version 2.1.7
5089 Fixed a bug where __proto__ was sometimes enumerated (issue 646).
5091 Performance improvements for arithmetic operations.
5093 Performance improvements for string operations.
5095 Print script name and line number information in stack trace.
5098 2010-03-17: Version 2.1.6
5100 Performance improvements for arithmetic operations.
5102 Performance improvements for string operations.
5105 2010-03-10: Version 2.1.4
5107 Fixed code cache lookup for keyed IC's (issue http://crbug.com/37853).
5109 Performance improvements on all platforms.
5112 2010-03-10: Version 2.1.3
5114 Added API method for context-disposal notifications.
5116 Added API method for accessing elements by integer index.
5118 Added missing implementation of Uint32::Value and Value::IsUint32
5121 Added IsExecutionTerminating API method.
5123 Disabled strict aliasing for GCC 4.4.
5125 Fixed string-concatenation bug (issue 636).
5127 Performance improvements on all platforms.
5130 2010-02-23: Version 2.1.2
5132 Fixed a crash bug caused by wrong assert.
5134 Fixed a bug with register names on 64-bit V8 (issue 615).
5136 Performance improvements on all platforms.
5139 2010-02-19: Version 2.1.1
5141 [ES5] Implemented Object.defineProperty.
5143 Improved profiler support.
5145 Added SetPrototype method in the public V8 API.
5147 Added GetScriptOrigin and GetScriptLineNumber methods to Function
5150 Performance improvements on all platforms.
5153 2010-02-03: Version 2.1.0
5155 Values are now always wrapped in objects when used as a receiver.
5158 [ES5] Implemented Object.getOwnPropertyNames.
5160 [ES5] Restrict JSON.parse to only accept strings that conforms to the
5163 Improvement of debugger agent (issue 549 and 554).
5165 Fixed problem with skipped stack frame in profiles (issue 553).
5167 Solaris support by Erich Ocean <erich.ocean@me.com> and Ryan Dahl
5168 <ry@tinyclouds.org>.
5170 Fixed a bug that Math.round() returns incorrect results for huge
5173 Fixed enumeration order for objects created from some constructor
5174 functions (isue http://crbug.com/3867).
5176 Fixed arithmetic on some integer constants (issue 580).
5178 Numerous performance improvements including porting of previous IA-32
5179 optimizations to x64 and ARM architectures.
5182 2010-01-14: Version 2.0.6
5184 Added ES5 Object.getPrototypeOf, GetOwnPropertyDescriptor,
5185 GetOwnProperty, FromPropertyDescriptor.
5187 Fixed Mac x64 build errors.
5189 Improved performance of some math and string operations.
5191 Improved performance of some regexp operations.
5193 Improved performance of context creation.
5195 Improved performance of hash tables.
5198 2009-12-18: Version 2.0.5
5200 Extended to upper limit of map space to allow for 7 times as many map
5201 to be allocated (issue 524).
5203 Improved performance of code using closures.
5205 Improved performance of some binary operations involving doubles.
5208 2009-12-16: Version 2.0.4
5210 Added ECMAScript 5 Object.create.
5212 Improved performance of Math.max and Math.min.
5214 Optimized adding of strings on 64-bit platforms.
5216 Improved handling of external strings by using a separate table
5217 instead of weak handles. This improves garbage collection
5218 performance and uses less memory.
5220 Changed code generation for object and array literals in toplevel
5221 code to be more compact by doing more work in the runtime.
5223 Fixed a crash bug triggered when garbage collection happened during
5224 generation of a callback load inline cache stub.
5226 Fixed crash bug sometimes triggered when local variables shadowed
5227 parameters in functions that used the arguments object.
5230 2009-12-03: Version 2.0.3
5232 Optimized handling and adding of strings, for-in and Array.join.
5234 Heap serialization is now non-destructive.
5236 Improved profiler support with information on time spend in C++
5237 callbacks registered through the API.
5239 Added commands to the debugger protocol for starting/stopping
5242 Enabled the non-optimizing compiler for top-level code.
5244 Changed the API to only allow strings to be set as data objects on
5245 Contexts and scripts to avoid potentially keeping global objects
5246 around for too long (issue 528).
5248 OpenBSD support patch by Peter Valchev <pvalchev@gmail.com>.
5253 2009-11-24: Version 2.0.2
5255 Improved profiler support.
5257 Fixed bug that broke compilation of d8 with readline support.
5260 2009-11-20: Version 2.0.1
5262 Fixed crash bug in String.prototype.replace.
5264 Reverted a change which caused Chromium interactive ui test
5268 2009-11-18: Version 2.0.0
5270 Added support for VFP on ARM.
5272 Added TryCatch::ReThrow method to the API.
5274 Reduced the size of snapshots and improved the snapshot load time.
5276 Improved heap profiler support.
5278 64-bit version now supported on Windows.
5280 Fixed a number of debugger issues.
5285 2009-10-29: Version 1.3.18
5287 Reverted a change which caused crashes in RegExp replace.
5289 Reverted a change which caused Chromium ui_tests failure.
5292 2009-10-28: Version 1.3.17
5294 Added API method to get simple heap statistics.
5296 Improved heap profiler support.
5298 Fixed the implementation of the resource constraint API so it
5299 works when using snapshots.
5301 Fixed a number of issues in the Windows 64-bit version.
5303 Optimized calls to API getters.
5305 Added valgrind notification on code modification to the 64-bit version.
5307 Fixed issue where we logged shared library addresses on Windows at
5308 startup and never used them.
5311 2009-10-16: Version 1.3.16
5313 X64: Convert smis to holding 32 bits of payload.
5315 Introduced v8::Integer::NewFromUnsigned method.
5317 Added missing null check in Context::GetCurrent.
5319 Added trim, trimLeft and trimRight methods to String
5320 Patch by Jan de Mooij <jandemooij@gmail.com>
5322 Implement ES5 Array.isArray
5323 Patch by Jan de Mooij <jandemooij@gmail.com>
5325 Skip access checks for hidden properties.
5327 Added String::Concat(Handle<String> left, Handle<String> right) to the
5330 Fixed GYP-based builds of V8.
5333 2009-10-07: Version 1.3.15
5335 Expanded the maximum size of the code space to 512MB for 64-bit mode.
5337 Fixed a crash bug happening when starting profiling (issue
5338 http://crbug.com/23768).
5341 2009-10-07: Version 1.3.14
5343 Added GetRealNamedProperty to the API to lookup real properties
5344 located on the object or in the prototype chain skipping any
5347 Fixed the stack limits setting API to work correctly with threads. The
5348 stack limit now needs to be set to each thread thich is used with V8.
5350 Removed the high-priority flag from IdleNotification()
5352 Ensure V8 is initialized before locking and unlocking threads.
5354 Implemented a new JavaScript minifier for compressing the source of
5355 the built-in JavaScript. This removes non-Open Source code from Douglas
5356 Crockford from the project.
5358 Added a missing optimization in StringCharAt.
5360 Fixed some flaky socket tests.
5362 Change by Alexander Botero-Lowry to fix profiler sampling on FreeBSD
5365 Fixed memory leaks in the thread management code.
5367 Fixed the result of assignment to a pixel array. The assigned value
5370 Error reporting for invalid left-hand sides in for-in statements, pre-
5371 and postfix count expressions, and assignments now matches the JSC
5372 behavior in Safari 4.
5374 Follow the spec in disallowing function declarations without a name.
5376 Always allocate code objects within a 2 GB range. On x64 architecture
5377 this is used to use near calls (32-bit displacement) in Code objects.
5379 Optimized array construction ported to x64 and ARM architectures.
5381 [ES5] Changed Object.keys to return strings for element indices.
5384 2009-09-23: Version 1.3.13
5386 Fixed uninitialized memory problem.
5388 Improved heap profiler support.
5391 2009-09-22: Version 1.3.12
5393 Changed behavior of |function|.toString() on built-in functions to
5394 be compatible with other implementations. Patch by Jan de Mooij.
5396 Added Object::IsDirty in the API.
5398 Optimized array construction; it is now handled purely in native
5401 [ES5] Made properties of the arguments array enumerable.
5403 [ES5] Added test suite adapter for the es5conform test suite.
5405 [ES5] Added Object.keys function.
5408 2009-09-15: Version 1.3.11
5410 Fixed crash in error reporting during bootstrapping.
5412 Optimized generated IA32 math code by using SSE2 instructions when
5415 Implemented missing pieces of debugger infrastructure on ARM. The
5416 debugger is now fully functional on ARM.
5418 Made 'hidden' the default visibility for gcc.
5421 2009-09-09: Version 1.3.10
5423 Fixed profiler on Mac in 64-bit mode.
5425 Optimized creation of objects from simple constructor functions on
5428 Fixed a number of debugger issues.
5430 Reduced the amount of memory consumed by V8.
5433 2009-09-02: Version 1.3.9
5435 Optimized stack guard checks on ARM.
5437 Optimized API operations by inlining more in the API.
5439 Optimized creation of objects from simple constructor functions.
5441 Enabled a number of missing optimizations in the 64-bit port.
5443 Implemented native-code support for regular expressions on ARM.
5445 Stopped using the 'sahf' instruction on 64-bit machines that do
5448 Fixed a bug in the support for forceful termination of JavaScript
5452 2009-08-26: Version 1.3.8
5454 Changed the handling of idle notifications to allow idle
5455 notifications when V8 has not yet been initialized.
5457 Fixed ARM simulator compilation problem on Windows.
5460 2009-08-25: Version 1.3.7
5462 Reduced the size of generated code on ARM platforms by reducing
5463 the size of constant pools.
5465 Changed build files to not include the 'ENV' user environment
5466 variable in the build environment.
5468 Changed the handling of idle notifications.
5471 2009-08-21: Version 1.3.6
5473 Added support for forceful termination of JavaScript execution.
5475 Added low memory notification to the API. The embedding host can signal
5476 a low memory situation to V8.
5478 Changed the handling of global handles (persistent handles in the API
5479 sense) to avoid issues regarding allocation of new global handles
5480 during weak handle callbacks.
5482 Changed the growth policy of the young space.
5484 Fixed a GC issue introduced in version 1.3.5.
5487 2009-08-19: Version 1.3.5
5489 Optimized initialization of some arrays in the builtins.
5491 Fixed mac-nm script to support filenames with spaces.
5493 Support for using the V8 profiler when V8 is embedded in a Windows DLL.
5495 Changed typeof RegExp from 'object' to 'function' for compatibility.
5496 Fixed bug where regexps were not callable across contexts.
5498 Added context independent script compilation to the API.
5500 Added API call to get the stack trace for an exception.
5502 Added API for getting object mirrors.
5504 Made sure that SSE3 instructions are used whenever possible even when
5505 running off a snapshot generated without using SSE3 instructions.
5507 Tweaked the handling of the initial size and growth policy of the heap.
5509 Added native code generation for RegExp to 64-bit version.
5511 Added JavaScript debugger support to 64-bit version.
5514 2009-08-13: Version 1.3.4
5516 Added a readline() command to the d8 shell.
5518 Fixed bug in json parsing.
5520 Added idle notification to the API and reduced memory on idle
5524 2009-08-12: Version 1.3.3
5526 Fixed issue 417: incorrect %t placeholder expansion.
5528 Added .gitignore file similar to Chromium's one.
5530 Fixed SConstruct file to build with new logging code for Android.
5532 API: added function to find instance of template in prototype
5533 chain. Inlined Object::IsInstanceOf.
5535 Land change to notify valgrind when we modify code on x86.
5537 Added api call to determine whether a string can be externalized.
5539 Added a write() command to d8.
5542 2009-08-05: Version 1.3.2
5544 Started new compiler infrastructure for two-pass compilation using a
5545 control flow graph constructed from the AST.
5547 Profiler stack sampling for X64.
5549 Safe handling of NaN to Posix platform-dependent time functions.
5551 Added a new profiler control API to unify controlling various aspects
5557 2009-07-30: Version 1.3.1
5559 Speed improvements to accessors and interceptors.
5561 Added support for capturing stack information on custom errors.
5563 Added support for morphing an object into a pixel array where its
5564 indexed properties are stored in an external byte array. Values written
5565 are always clamped to the 0..255 interval.
5567 Profiler on x64 now handles C/C++ functions from shared libraries.
5569 Changed the debugger to avoid stepping into function.call/apply if the
5570 function is a built-in.
5572 Initial implementation of constructor heap profile for JS objects.
5574 More fine grained control of profiling aspects through the API.
5576 Optimized the called as constructor check for API calls.
5579 2009-07-27: Version 1.3.0
5581 Allowed RegExp objects to be called as functions (issue 132).
5583 Fixed issue where global property cells would escape after
5584 detaching the global object; see http://crbug.com/16276.
5586 Added support for stepping into setters and getters in the
5589 Changed the debugger to avoid stopping in its own JavaScript code
5590 and in the code of built-in functions.
5592 Fixed issue 345 by avoiding duplicate escaping labels.
5594 Fixed ARM code generator crash in short-circuited boolean
5595 expressions and added regression tests.
5597 Added an external allocation limit to avoid issues where small V8
5598 objects would hold on to large amounts of external memory without
5599 causing garbage collections.
5601 Finished more of the inline caching stubs for x64 targets.
5604 2009-07-13: Version 1.2.14
5606 Added separate paged heap space for global property cells and
5607 avoid updating the write barrier when storing into them.
5609 Improved peep-hole optimization on ARM platforms by not emitting
5610 unnecessary debug information.
5612 Re-enabled ICs for loads and calls that skip a global object
5613 during lookup through the prototype chain.
5615 Allowed access through global proxies to use ICs.
5620 2009-07-09: Version 1.2.13
5622 Fixed issue 397, issue 398, and issue 399.
5624 Added support for breakpoint groups.
5626 Fixed bugs introduced with the new global object representation.
5628 Fixed a few bugs in the ARM code generator.
5631 2009-07-06: Version 1.2.12
5633 Added stack traces collection to Error objects accessible through
5634 the e.stack property.
5636 Changed RegExp parser to use a recursive data structure instead of
5637 stack-based recursion.
5639 Optimized Date object construction and string concatenation.
5641 Improved performance of div, mod, and mul on ARM platforms.
5644 2009-07-02: Version 1.2.11
5646 Improved performance on IA-32 and ARM.
5648 Fixed profiler sampler implementation on Mac OS X.
5650 Changed the representation of global objects to improve
5651 performance of adding a lot of new properties.
5654 2009-06-29: Version 1.2.10
5656 Improved debugger support.
5658 Fixed bug in exception message reporting (issue 390).
5660 Improved overall performance.
5663 2009-06-23: Version 1.2.9
5665 Improved math performance on ARM.
5667 Fixed profiler name-inference bug.
5669 Fixed handling of shared libraries in the profiler tick processor
5672 Fixed handling of tests that time out in the test scripts.
5674 Fixed compilation on MacOS X version 10.4.
5676 Fixed two bugs in the regular expression engine.
5678 Fixed a bug in the string type inference.
5680 Fixed a bug in the handling of 'constant function' properties.
5682 Improved overall performance.
5685 2009-06-16: Version 1.2.8
5687 Optimized math on ARM platforms.
5689 Fixed two crash bugs in the handling of getters and setters.
5691 Improved the debugger support by adding scope chain information.
5693 Improved the profiler support by compressing log data transmitted
5696 Improved overall performance.
5699 2009-06-08: Version 1.2.7
5701 Improved debugger and profiler support.
5703 Reduced compilation time by improving the handling of deferred
5706 Optimized interceptor accesses where the property is on the object
5707 on which the interceptors is attached.
5709 Fixed compilation problem on GCC 4.4 by changing the stack
5710 alignment to 16 bytes.
5712 Fixed handle creation to follow stric aliasing rules.
5714 Fixed compilation on FreeBSD.
5716 Introduced API for forcing the deletion of a property ignoring
5717 interceptors and attributes.
5720 2009-05-29: Version 1.2.6
5722 Added a histogram recording hit rates at different levels of the
5725 Added stack overflow check for the RegExp analysis phase. Previously a
5726 very long regexp graph could overflow the stack with recursive calls.
5728 Use a dynamic buffer when collecting log events in memory.
5730 Added start/stop events to the profiler log.
5732 Fixed infinite loop which could happen when setting a debug break while
5733 executing a RegExp compiled to native code.
5735 Fixed handling of lastIndexOf called with negative index (issue 351).
5737 Fixed irregular crash in profiler test (issue 358).
5739 Fixed compilation issues with some versions of gcc.
5742 2009-05-26: Version 1.2.5
5744 Fixed bug in initial boundary check for Boyer-Moore text
5747 Fixed compilation issues with MinGW and gcc 4.3+ and added support
5748 for armv7 and cortex-a8 architectures. Patches by Lei Zhang and
5751 Added a script cache to the debugger.
5753 Optimized compilation performance by improving internal data
5754 structures and avoiding expensive property load optimizations for
5755 code that's infrequently executed.
5757 Exposed the calling JavaScript context through the static API
5758 function Context::GetCalling().
5761 2009-05-18: Version 1.2.4
5763 Improved performance of floating point number allocation for ARM
5766 Fixed crash when using the instanceof operator on functions with
5767 number values in their prototype chain (issue 341).
5769 Optimized virtual frame operations in the code generator to speed
5770 up compilation time and allocated the frames in the zone.
5772 Made the representation of virtual frames and jump targets in the
5773 code generator much more compact.
5775 Avoided linear search for non-locals in scope code when resolving
5776 variables inside with and eval scopes.
5778 Optimized lexical scanner by dealing with whitespace as part of
5779 the token scanning instead of as a separate step before it.
5781 Changed the scavenging collector so that promoted objects do not
5782 reside in the old generation while their remembered set is being
5783 swept for pointers into the young generation.
5785 Fixed numeric overflow handling when compiling count operations.
5788 2009-05-11: Version 1.2.3
5790 Fixed bug in reporting of out-of-memory situations.
5792 Introduced hidden prototypes on certain builtin prototype objects
5793 such as String.prototype to emulate JSC's behavior of restoring
5794 the original function when deleting functions from those prototype
5797 Fixed crash bug in the register allocator.
5800 2009-05-04: Version 1.2.2
5802 Fixed bug in array sorting for sparse arrays (issue 326).
5804 Added support for adding a soname when building a shared library
5805 on Linux (issue 151).
5807 Fixed bug caused by morphing internal ASCII strings to external
5808 two-byte strings. Slices over ASCII strings have to forward ASCII
5809 checks to the underlying buffer string.
5811 Allowed API call-as-function handlers to be called as
5814 Fixed a crash bug where an external string was disposed but a
5815 slice of the external string survived as a symbol.
5818 2009-04-27: Version 1.2.1
5820 Added EcmaScript 5 JSON object.
5822 Fixed bug in preemption support on ARM.
5825 2009-04-23: Version 1.2.0
5827 Optimized floating-point operations on ARM.
5829 Added a number of extensions to the debugger API.
5831 Changed the enumeration order for unsigned integer keys to always
5834 Added a "read" extension to the shell sample.
5836 Added support for Array.prototype.reduce and
5837 Array.prototype.reduceRight.
5839 Added an option to the SCons build to control Microsoft Visual C++
5840 link-time code generation.
5842 Fixed a number of bugs (in particular issue 315, issue 316,
5843 issue 317 and issue 318).
5846 2009-04-15: Version 1.1.10
5848 Fixed crash bug that occurred when loading a const variable in the
5851 Allowed using with and eval in registered extensions in debug mode
5852 by fixing bogus assert.
5854 Fixed the source position for function returns to enable the
5855 debugger to break there.
5858 2009-04-14: Version 1.1.9
5860 Made the stack traversal code in the profiler robust by avoiding
5861 to look into the heap.
5863 Added name inferencing for anonymous functions to facilitate
5864 debugging and profiling.
5866 Re-enabled stats timers in the developer shell (d8).
5868 Fixed issue 303 by avoiding to shortcut cons-symbols.
5871 2009-04-11: Version 1.1.8
5873 Changed test-debug/ThreadedDebugging to be non-flaky (issue 96).
5875 Fixed step-in handling for Function.prototype.apply and call in
5876 the debugger (issue 269).
5878 Fixed v8::Object::DeleteHiddenValue to not bail out when there
5879 are no hidden properties.
5881 Added workaround for crash bug, where external symbol table
5882 entries with deleted resources would lead to NPEs when looking
5883 up in the symbol table.
5886 2009-04-07: Version 1.1.7
5888 Added support for easily importing additional environment
5889 variables into the SCons build.
5891 Optimized strict equality checks.
5893 Fixed crash in indexed setters on objects without a corresponding
5896 Re-enabled script compilation cache.
5899 2009-04-01: Version 1.1.6
5901 Reverted an unsafe code generator change.
5904 2009-04-01: Version 1.1.5
5906 Fixed bug that caused function literals to not be optimized as
5907 much as other functions.
5909 Improved profiler support.
5911 Fixed a crash bug in connection with debugger unloading.
5913 Fixed a crash bug in the code generator caused by losing the
5914 information that a frame element was copied.
5916 Fixed an exception propagation bug that could cause non-null
5917 return values when exceptions were thrown.
5920 2009-03-30: Version 1.1.4
5922 Optimized String.prototype.match.
5924 Improved the stack information in profiles.
5926 Fixed bug in ARM port making it possible to compile the runtime
5927 system for thumb mode again.
5929 Implemented a number of optimizations in the code generator.
5931 Fixed a number of memory leaks in tests.
5933 Fixed crash bug in connection with script source code and external
5937 2009-03-24: Version 1.1.3
5939 Fixed assertion failures in compilation of loop conditions.
5941 Removed STL dependency from developer shell (d8).
5943 Added infrastructure for protecting the V8 heap from corruption
5944 caused by memory modifications from the outside.
5947 2009-03-24: Version 1.1.2
5949 Improved frame merge code generated by the code generator.
5951 Optimized String.prototype.replace.
5953 Implemented __defineGetter__ and __defineSetter__ for properties
5954 with integer keys on non-array objects.
5956 Improved debugger and profiler support.
5958 Fixed a number of portability issues to allow compilation for
5959 smaller ARM devices.
5961 Exposed object cloning through the API.
5963 Implemented hidden properties. This is used to expose an identity
5964 hash for objects through the API.
5966 Implemented restarting of regular expressions if their input
5967 string changes representation during preemption.
5969 Fixed a code generator bug that could cause assignments in loops
5970 to be ignored if using continue to break out of the loop (issue
5974 2009-03-12: Version 1.1.1
5976 Fixed an assertion in the new compiler to take stack overflow
5977 exceptions into account.
5979 Removed exception propagation code that could cause crashes.
5981 Fixed minor bug in debugger line number computations.
5983 8-byte align the C stack on Linux and Windows to speed up floating
5987 2009-03-12: Version 1.1.0
5989 Improved code generation infrastructure by doing simple register
5990 allocation and constant folding and propagation.
5992 Optimized regular expression matching by avoiding to create
5993 intermediate string arrays and by flattening nested array
5994 representations of RegExp data.
5996 Traverse a few stack frames when recording profiler samples to
5997 include partial call graphs in the profiling output.
5999 Added support for using OProfile to profile generated code.
6001 Added remote debugging support to the D8 developer shell.
6003 Optimized creation of nested literals like JSON objects.
6005 Fixed a bug in garbage collecting unused maps and turned it on by
6006 default (--collect-maps).
6008 Added support for running tests under Valgrind.
6011 2009-02-27: Version 1.0.3
6013 Optimized double-to-integer conversions in bit operations by using
6014 SSE3 instructions if available.
6016 Optimized initialization sequences that store to multiple
6017 properties of the same object.
6019 Changed the D8 debugger frontend to use JSON messages.
6021 Force garbage collections when disposing contexts.
6023 Align code objects at 32-byte boundaries.
6026 2009-02-25: Version 1.0.2
6028 Improved profiling support by performing simple call stack
6029 sampling for ticks and by fixing a bug in the logging of code
6032 Fixed a number of debugger issues.
6034 Optimized code that uses eval.
6036 Fixed a couple of bugs in the regular expression engine.
6038 Reduced the size of generated code for certain regular expressions.
6040 Removed JSCRE completely.
6042 Fixed issue where test could not be run if there was a dot in the
6046 2009-02-13: Version 1.0.1
6048 Fixed two crash-bugs in irregexp (issue 231 and 233).
6050 Fixed a number of minor bugs (issue 87, 227 and 228).
6052 Added support for morphing strings to external strings on demand
6053 to avoid having to create copies in the embedding code.
6055 Removed experimental support for external symbol callbacks.
6058 2009-02-09: Version 1.0.0
6060 Fixed crash-bug in the code generation for case independent 16 bit
6063 Made shells more robust in the presence of string conversion
6064 failures (issue 224).
6066 Fixed a potential infinite loop when attempting to resolve
6069 Miscellaneous fixes to the new regular expression engine.
6071 Reduced binary by stripping unneeded text from JavaScript library and
6072 minifying some JavaScript files.
6075 2009-01-27: Version 0.4.9
6077 Enabled new regular expression engine.
6079 Made a number of changes to the debugger protocol.
6081 Fixed a number of bugs in the preemption support.
6083 Added -p option to the developer shell to run files in parallel
6086 Fixed a number of minor bugs (including issues 176, 187, 189, 192,
6089 Fixed a number of bugs in the serialization/deserialization
6090 support for the ARM platform.
6093 2009-01-19: Version 0.4.8.1
6095 Minor patch to debugger support.
6098 2009-01-16: Version 0.4.8
6100 Fixed string length bug on ARM (issue 171).
6102 Made most methods in the API const.
6104 Optimized object literals by improving data locality.
6106 Fixed bug that caused incomplete functions to be cached in case of
6107 stack overflow exceptions.
6109 Fixed bugs that caused catch variables and variables introduced by
6110 eval to behave incorrectly when using accessors (issues 186, 190
6114 2009-01-06: Version 0.4.7
6116 Minor bugfixes and optimizations.
6118 Added command line debugger to D8 shell.
6120 Fixed subtle bug that caused the wrong 'this' to be used when
6121 calling a caught function in a catch clause.
6123 Inline array loads within loops directly in the code instead of
6124 always calling a stub.
6127 2008-12-11: Version 0.4.6
6129 Fixed exception reporting bug where certain exceptions were
6130 incorrectly reported as uncaught.
6132 Improved the memory allocation strategy used during compilation to
6133 make running out of memory when compiling huge scripts less
6136 Optimized String.replace by avoiding the construction of certain
6139 Fixed bug in code generation for large switch statements on ARM.
6141 Fixed bug that caused V8 to change the global object template
6142 passed in by the user.
6144 Changed the API for creating object groups used during garbage
6145 collection. Entire object groups are now passed to V8 instead of
6146 individual members of the groups.
6149 2008-12-03: Version 0.4.5
6151 Added experimental API support for allocating V8 symbols as
6154 Fixed bugs in debugging support on ARM.
6156 Changed eval implementation to correctly detect whether or not a
6157 call to eval is aliased.
6159 Fixed bug caused by a combination of the compilation cache and
6160 dictionary probing in native code. The bug caused us to sometimes
6161 call functions that had not yet been compiled.
6163 Added platform support for FreeBSD.
6165 Added support for building V8 on Windows with either the shared or
6166 static version of MSVCRT
6168 Added the v8::jscre namespace around the jscre functions to avoid
6169 link errors (duplicate symbols) when building Google Chrome.
6171 Added support for calling a JavaScript function with the current
6172 debugger execution context as its argument to the debugger
6175 Changed the type of names of counters from wchar_t to char.
6177 Changed the Windows system call used to compute daylight savings
6178 time. The system call that we used to use became four times
6179 slower on WinXP SP3.
6181 Added support in the d8 developer shell for memory-mapped counters
6182 and added a stats-viewer tool.
6184 Fixed bug in upper/lower case mappings (issue 149).
6187 2008-11-17: Version 0.4.4
6189 Reduced code size by using shorter instruction encoding when
6192 Added a --help option to the shell sample and to the d8 shell.
6194 Added visual studio project files for building the ARM simulator.
6196 Fixed a number of ARM simulator issues.
6198 Fixed bug in out-of-memory handling on ARM.
6200 Implemented shell support for passing arguments to a script from
6203 Fixed bug in date code that made certain date functions return -0
6204 instead of 0 for dates before the epoch.
6206 Restricted applications of eval so it can only be used in the
6207 context of the associated global object.
6209 Treat byte-order marks as whitespace characters.
6212 2008-11-04: Version 0.4.3
6214 Added support for API accessors that prohibit overwriting by
6215 accessors defined in JavaScript code by using __defineGetter__ and
6218 Improved handling of conditionals in test status files.
6220 Introduced access control in propertyIsEnumerable.
6222 Improved performance of some string operations by caching
6223 information about the type of the string between operations.
6225 Fixed bug in fast-case code for switch statements that only have
6229 2008-10-30: Version 0.4.2
6231 Improved performance of Array.prototype.concat by moving the
6232 implementation to C++ (issue 123).
6234 Fixed heap growth policy to avoid growing old space to its maximum
6235 capacity before doing a garbage collection and fixed issue that
6236 would lead to artificial out of memory situations (issue 129).
6238 Fixed Date.prototype.toLocaleDateString to return the date in the
6239 same format as WebKit.
6241 Added missing initialization checks to debugger API.
6243 Added removing of unused maps during GC.
6246 2008-10-28: Version 0.4.1
6248 Added caching of RegExp data in compilation cache.
6250 Added Visual Studio project file for d8 shell.
6252 Fixed function call performance regression introduced in version
6253 0.4.0 when splitting the global object in two parts (issue 120).
6255 Fixed issue 131 by checking for empty handles before throwing and
6256 reporting exceptions.
6259 2008-10-23: Version 0.4.0
6261 Split the global object into two parts: The state holding global
6262 object and the global object proxy.
6264 Fixed bug that affected the value of an assignment to an element
6265 in certain cases (issue 116).
6267 Added GetPropertyNames functionality (issue 33) and extra Date
6268 functions (issue 77) to the API.
6270 Changed WeakReferenceCallback to take a Persistent<Value> instead
6271 of a Persistent<Object> (issue 101).
6273 Fixed issues with message reporting for exceptions in try-finally
6274 blocks (issues 73 and 75).
6276 Optimized flattening of strings and string equality checking.
6278 Improved Boyer-Moore implementation for faster indexOf operations.
6280 Added development shell (d8) which includes counters and
6283 Fixed problem with the receiver passed to functions called from
6287 2008-10-16: Version 0.3.5
6289 Improved string hash-code distribution by excluding bit-field bits
6292 Changed string search algorithm used in indexOf from KMP to
6295 Improved the generated code for the instanceof operator.
6297 Improved performance of slow-case string equality checks by
6298 specializing the code based on the string representation.
6300 Improve the handling of out-of-memory situations (issue 70).
6302 Improved performance of strict equality checks.
6304 Improved profiler output to make it easier to see anonymous
6307 Improved performance of slow-case keyed loads.
6309 Improved property access performance by allocating a number of
6310 properties in the front object.
6312 Changed the toString behavior on the built-in object constructors
6313 to print [native code] instead of the actual source. Some web
6314 applications do not like constructors with complex toString
6318 2008-10-06: Version 0.3.4
6320 Changed Array.prototype.sort to use quick sort.
6322 Fixed code generation issue where leaving a finally block with
6323 break or continue would accumulate elements on the expression
6326 Made sure that the name accessor on functions returns the expected
6327 names for builtin JavaScript functions and C++ callback functions.
6329 Added fast case code for extending the property storage array of
6332 Ported switch statement optimizations introduced in version 0.3.3
6333 to the ARM code generator.
6335 Allowed GCC to use strict-aliasing rules when compiling.
6337 Improved performance of arguments object allocation by taking care
6338 of arguments adaptor frames in the generated code.
6340 Updated the V8 benchmark suite to version 2.
6343 2008-09-25: Version 0.3.3
6345 Improved handling of relocation information to enable more
6346 peep-hole optimizations.
6348 Optimized switch statements where all labels are constant small
6351 Optimized String.prototype.indexOf for common cases.
6353 Fixed more build issues (issue 80).
6355 Fixed a couple of profiler issues.
6357 Fixed bug where the body of a function created using the Function
6358 constructor was not allowed to end with a single-line comment
6361 Improved handling of object literals by canonicalizing object
6362 literal maps. This will allow JSON objects with the same set of
6363 properties to share the same map making inline caching work better
6367 2008-09-17: Version 0.3.2
6369 Generalized the EvalCache into a CompilationCache and enabled it
6370 for scripts too. The current strategy is to retire all entries
6371 whenever a mark-sweep collection is started.
6373 Fixed bug where switch statements containing only a default case
6374 would lead to an unbalanced stack (issue 69).
6376 Fixed bug that made access to the function in a named function
6377 expression impossible in certain situations (issue 24).
6379 Fixed even more build issues.
6381 Optimized calling conventions on ARM. The conventions on ARM and
6384 Removed static initializers for flags and counters.
6386 Improved inline caching behavior for uncommon cases where lazily
6387 loading Date and RegExp code could force certain code paths go
6390 Removed arguments adaption for builtins written in C++. This
6391 makes Array.prototype.push and Array.prototype.pop slightly
6395 2008-09-11: Version 0.3.1
6397 Fixed a number of build issues.
6399 Fixed problem with missing I-cache flusing on ARM.
6401 Changed space layout in memory management by splitting up
6402 code space into old data space and code space.
6404 Added utf-8 conversion support to the API (issue 57).
6406 Optimized repeated calls to eval with the same strings. These
6407 repeated calls are common in web applications.
6409 Added Xcode project file.
6411 Optimized a couple of Array operation.
6413 Fixed parser bug by checking for end-of-string when parsing break
6414 and continue (issue 35).
6416 Fixed problem where asian characters were not categorized as
6419 Fixed bug that disallowed calling functions fetched from an array
6420 using a string as an array index (issue 32).
6422 Fixed bug where the internal field count on object templates were
6423 sometimes ignored (issue 54).
6425 Added -f option to the shell sample for compatibility with other
6428 Added source info to TryCatches in the API.
6430 Fixed problem where the seed for the random number generator was
6431 clipped in a double to unsigned int conversion.
6433 Fixed bug where cons string symbols were sometimes converted to
6434 non-symbol flat strings during GC.
6436 Fixed bug in error reporting when attempting to convert null to an
6440 2008-09-04: Version 0.3.0
6442 Added support for running tests on the ARM simulator.
6444 Fixed bug in the 'in' operator where negative indices were not
6447 Fixed build issues on gcc-4.3.1.
6449 Changed Date.prototype.toLocaleTimeString to not print the
6450 timezone part of the time.
6452 Renamed debug.h to v8-debug.h to reduce the risk of name conflicts
6456 2008-09-02: Version 0.2.5
6458 Renamed the top level directory 'public' to 'include'.
6460 Added 'env' option to the SCons build scripts to support
6461 overriding the ENV part of the build environment. This is mostly
6462 to support Windows builds in cases where SCons cannot find the
6463 correct paths to the Windows SDK, as these paths cannot be passed
6464 through shell environment variables.
6466 Enabled "Buffer Security Check" on for the Windows SCons build and
6467 added the linker option /OPT:ICF as an optimization.
6469 Added the V8 benchmark suite to the repository.
6472 2008-09-01: Version 0.2.4
6474 Included mjsunit JavaScript test suite and C++ unit tests.
6476 Changed the shell sample to not print the result of executing a
6477 script provided on the command line.
6479 Fixed issue when building samples on Windows using a shared V8
6480 library. Added visibility option on Linux build which makes the
6481 generated library 18% smaller.
6483 Changed build system to accept multiple build modes in one build
6484 and generate separate objects, libraries and executables for each
6487 Removed deferred negation optimization (a * -b => -(a * b)) since
6488 this visibly changes operand conversion order.
6490 Improved parsing performance by introducing stack guard in
6491 preparsing. Without a stack guard preparsing always bails out
6492 with stack overflow.
6494 Changed shell sample to take flags directly from the command-line.
6495 Added API call that implements this.
6497 Added load, quit and version functions to the shell sample so it's
6498 easier to run benchmarks and tests.
6500 Fixed issue with building samples and cctests on 64-bit machines.
6502 Fixed bug in the runtime system where the prototype chain was not
6503 always searched for a setter when setting a property that does not
6507 2008-08-14: Version 0.2.3
6509 Improved performance of garbage collection by moving the
6510 function that updates pointers during compacting collection
6511 into the updating visitor. This gives the compiler a better
6512 chance to inline and avoid a function call per (potential)
6515 Extended the shell sample with a --runtime-flags option.
6517 Added Visual Studio project files for the shell.cc and
6521 2008-08-13: Version 0.2.2
6523 Improved performance of garbage collection by changing the way
6524 we use the marking stack in the event of stack overflow during
6525 full garbage collection and by changing the way we mark roots.
6527 Cleaned up ARM version by removing top of stack caching and by
6528 introducing push/pop elimination.
6530 Cleaned up the way runtime functions are called to allow
6531 runtime calls with no arguments.
6533 Changed Windows build options to make sure that exceptions are
6534 disabled and that optimization flags are enabled.
6536 Added first version of Visual Studio project files.
6539 2008-08-06: Version 0.2.1
6541 Improved performance of unary addition by avoiding runtime calls.
6543 Fixed the handling of '>' and '<=' to use right-to-left conversion
6544 and left-to-right evaluation as specified by ECMA-262.
6546 Fixed a branch elimination bug on the ARM platform where incorrect
6547 code was generated because of overly aggressive branch
6550 Improved performance of code that repeatedly assigns the same
6551 function to the same property of different objects with the same
6554 Untangled DEBUG and ENABLE_DISASSEMBLER defines. The disassembler
6555 no longer expects DEBUG to be defined.
6557 Added platform-nullos.cc to serve as the basis for new platform
6561 2008-07-30: Version 0.2.0
6563 Changed all text files to have native svn:eol-style.
6565 Added a few samples and support for building them. The samples
6566 include a simple shell that can be used to benchmark and test V8.
6568 Changed V8::GetVersion to return the version as a string.
6570 Added source for lazily loaded scripts to snapshots and made
6571 serialization non-destructive.
6573 Improved ARM support by fixing the write barrier code to use
6574 aligned loads and stores and by removing premature locals
6575 optimization that relied on broken support for callee-saved
6576 registers (removed).
6578 Refactored the code for marking live objects during garbage
6579 collection and the code for allocating objects in paged
6580 spaces. Introduced an abstraction for the map word of a heap-
6581 allocated object and changed the memory allocator to allocate
6582 executable memory only for spaces that may contain code objects.
6584 Moved StringBuilder to utils.h and ScopedLock to platform.h, where
6585 they can be used by debugging and logging modules. Added
6586 thread-safe message queues for dealing with debugger events.
6588 Fixed the source code reported by toString for certain builtin
6589 empty functions and made sure that the prototype property of a
6590 function is enumerable.
6592 Improved performance of converting values to condition flags in
6595 Merged disassembler-{arch} files.
6598 2008-07-28: Version 0.1.4
6600 Added support for storing JavaScript stack traces in a stack
6601 allocated buffer to make it visible in shallow core dumps.
6602 Controlled by the --preallocate-message-memory flag which is
6603 disabled by default.
6606 2008-07-25: Version 0.1.3
6608 Fixed bug in JSObject::GetPropertyAttributePostInterceptor where
6609 map transitions would count as properties.
6611 Allowed aliased eval invocations by treating them as evals in the
6612 global context. This may change in the future.
6614 Added support for accessing the last entered context through the
6615 API and renamed Context::Current to Context::GetCurrent and
6616 Context::GetSecurityContext to Context::GetCurrentSecurityContext.
6618 Fixed bug in the debugger that would cause the debugger scripts to
6619 be recursively loaded and changed all disabling of interrupts to
6620 be block-structured.
6622 Made snapshot data read-only to allow it to be more easily shared
6623 across multiple users of V8 when linked as a shared library.
6626 2008-07-16: Version 0.1.2
6628 Fixed building on Mac OS X by recognizing i386 and friends as
6631 Added propagation of stack overflow exceptions that occur while
6632 compiling nested functions.
6634 Improved debugger with support for recursive break points and
6635 handling of exceptions that occur in the debugger JavaScript code.
6637 Renamed GetInternal to GetInternalField and SetInternal to
6638 SetInternalField in the API and moved InternalFieldCount and
6639 SetInternalFieldCount from FunctionTemplate to ObjectTemplate.
6642 2008-07-09: Version 0.1.1
6644 Fixed bug in stack overflow check code for IA-32 targets where a
6645 non-tagged value in register eax was pushed to the stack.
6647 Fixed potential quadratic behavior when converting strings to
6650 Fixed bug where the return value from Object::SetProperty could
6651 end up being the property holder instead of the written value.
6653 Improved debugger support by allowing nested break points and by
6654 dealing with stack-overflows when compiling functions before
6655 setting break points in them.
6658 2008-07-03: Version 0.1.0