1 2014-11-05: Version 3.30.33
3 `1..isPrototypeOf.call(null)` should return false, not throw TypeError
6 Refactor ObjectGetOwnPropertyKeys to accept bitmask rather than boolean
9 Add debug mirror support for ES6 Map/Set iterators (Chromium issue
12 Performance and stability improvements on all platforms.
15 2014-11-04: Version 3.30.30
17 Performance and stability improvements on all platforms.
20 2014-11-02: Version 3.30.27
22 Performance and stability improvements on all platforms.
25 2014-11-02: Version 3.30.26
27 Performance and stability improvements on all platforms.
30 2014-11-01: Version 3.30.25
32 Performance and stability improvements on all platforms.
35 2014-11-01: Version 3.30.24
37 Ensure we don't try to inline raw access to indexed interceptor
38 receivers (Chromium issue 419220).
40 Performance and stability improvements on all platforms.
43 2014-10-31: Version 3.30.23
45 Introduce v8::Exception::GetMessage to find location of an error object
46 (Chromium issue 427954).
48 Performance and stability improvements on all platforms.
51 2014-10-30: Version 3.30.22
53 MIPS: Classes: Add super support in methods and accessors (issue 3330).
55 Classes: Add super support in methods and accessors (issue 3330).
57 Performance and stability improvements on all platforms.
60 2014-10-29: Version 3.30.21
62 MIPS: Classes: Add basic support for properties (issue 3330).
64 Classes: Add more tests for prototype edge cases (Chromium issue 3655).
66 Classes: Add test for method prototype (issue 3330).
68 Get stack trace for uncaught exceptions/promise rejections from the
69 simple stack when available.
71 Classes: Add basic support for properties (issue 3330).
73 Allow duplicate property names in classes (issue 3570).
75 Windows: use SystemTimeToTzSpecificLocalTime instead of localtime_s
76 (Chromium issue 417640).
78 Performance and stability improvements on all platforms.
81 2014-10-28: Version 3.30.20
83 Performance and stability improvements on all platforms.
86 2014-10-27: Version 3.30.19
88 Check string literals with escapes in PreParserTraits::GetSymbol()
91 only define ARRAYSIZE_UNSAFE for NaCl builds (Chromium issue 405225).
93 Performance and stability improvements on all platforms.
96 2014-10-24: Version 3.30.18
98 Narrow cases where Sparse/Smart versions of Array methods are used
99 (issues 2615, 3612, 3621).
101 Shrink new space in idle notification (Chromium issue 424423).
103 Performance and stability improvements on all platforms.
106 2014-10-23: Version 3.30.17
108 ARM64: Fix stack manipulation (Chromium issue 425585).
110 Speed up creation of Objects whose prototype has dictionary elements
111 (Chromium issue 422754).
113 Enable libstdc++ debug mode in debug builds (issue 3638).
115 Performance and stability improvements on all platforms.
118 2014-10-22: Version 3.30.16
120 Remove v8stdint.h, it doesn't serve a purpose anymore.
122 Performance and stability improvements on all platforms.
125 2014-10-21: Version 3.30.15
127 Avoid the Marsaglia effect in 3D (Chromium issue 423311).
129 Performance and stability improvements on all platforms.
132 2014-10-20: Version 3.30.14
134 Performance and stability improvements on all platforms.
137 2014-10-17: Version 3.30.13
139 Don't expose Array.prototype.values as it breaks webcompat (Chromium
142 Fix break location calculation (Chromium issue 419663).
144 Enable libstdc++ debug mode in debug builds (issue 3638).
146 Performance and stability improvements on all platforms.
149 2014-10-17: Version 3.30.12
151 Implement .forEach() on typed arrays (issue 3578).
153 Introduce v8::Exception::GetStackTrace API method.
155 Remove SmartMove, bringing Array methods further into spec compliance
158 Convert argument toObject() in Object.getOwnPropertyNames/Descriptors
161 Performance and stability improvements on all platforms.
164 2014-10-15: Version 3.30.11
166 Array.prototype.{every, filter, find, findIndex, forEach, map, some}:
167 Use fresh primitive wrapper for calls (issue 3536).
169 Correctly expand literal buffer for surrogate pairs (Chromium issue
172 Performance and stability improvements on all platforms.
175 2014-10-15: Version 3.30.10
177 Squeeze the layout of various AST node types (Chromium issue 417697).
179 Performance and stability improvements on all platforms.
182 2014-10-14: Version 3.30.9
184 Performance and stability improvements on all platforms.
187 2014-10-13: Version 3.30.8
189 AST nodes have at most one bailout/typefeedback ID now, saving lots of
190 memory (Chromium issue 417697).
192 Allow identifier code points from supplementary multilingual planes
195 Performance and stability improvements on all platforms.
198 2014-10-10: Version 3.30.7
200 Fix computation of UTC time from local time at DST change points (issue
201 3116, Chromium issues 415424, 417640).
203 Convert `obj` ToObject in Object.keys() (issue 3587).
205 Performance and stability improvements on all platforms.
208 2014-10-09: Version 3.30.6
210 Update unicode to 7.0.0 (issue 2892).
212 Classes: Add support for toString (issue 3330).
214 Don't enable WPO on Win64 and require Server 2003 / x64 for win64
215 (Chromium issue 421363).
217 Performance and stability improvements on all platforms.
220 2014-10-08: Version 3.30.5
222 Performance and stability improvements on all platforms.
225 2014-10-08: Version 3.30.4
227 This uses a runtime function to set up the the constructor and its
228 prototype (issue 3330).
230 Remove PersistentBase::ClearAndLeak.
232 Squeeze the layout of variable proxy nodes (Chromium issue 417697).
234 Add MonotonicallyIncreasingTime to V8 Platform (Chromium issue 417668).
236 Fix representation of HLoadRoot (Chromium issue 419036).
238 Performance and stability improvements on all platforms.
241 2014-10-03: Version 3.30.3
243 Removed the Isolate* field from literal nodes (Chromium issue 417697).
245 Squeeze the layout of expression nodes a bit (Chromium issue 417697).
247 Merged FeedbackSlotInterface into AstNode, removing the need for a 2nd
248 vtable (Chromium issue 417697).
250 Extend CPU profiler with mapping ticks to source lines.
252 Remove support for parallel sweeping.
254 Introduce v8::Object::GetIsolate().
256 Performance and stability improvements on all platforms.
259 2014-10-02: Version 3.30.2
261 Fix Hydrogen's BuildStore() (Chromium issue 417508).
263 Move unit tests to test/unittests (issue 3489).
265 Changes to ALLOW_UNUSED to match upcoming changes to the Chromium trunk:
266 * Eliminate usage of ALLOW_UNUSED to define COMPILE_ASSERT and just use
267 static_assert() in all cases now that all platforms build with C++11. *
268 Convert remaining uses of ALLOW_UNUSED to ALLOW_UNUSED_TYPE to match how
269 Chromium will be splitting this functionality. (In Chromium we'll have
270 both ALLOW_UNUSED_TYPE and ALLOW_UNUSED_LOCAL, which have different
271 syntax to enable us to use these with MSVC.) (Chromium issue 81439).
273 Performance and stability improvements on all platforms.
276 2014-10-01: Version 3.30.1
278 Introduce PromiseRejectCallback (issue 3093).
280 ES6: Implement object literal property shorthand (issue 3584).
282 Performance and stability improvements on all platforms.
285 2014-09-30: Version 3.29.93
287 Add a getter for the address and size of the code range to the pulic API
290 Convert `obj` ToObject in Object.keys() (issue 3587).
292 Performance and stability improvements on all platforms.
295 2014-09-29: Version 3.29.92
297 Performance and stability improvements on all platforms.
300 2014-09-26: Version 3.29.91
302 Performance and stability improvements on all platforms.
305 2014-09-25: Version 3.29.88
307 Performance and stability improvements on all platforms.
310 2014-09-24: Version 3.29.87
312 Preserve message when rethrowing exception (issue 3583).
314 Fix escaped index JSON parsing (Chromium issue 416449).
316 Performance and stability improvements on all platforms.
319 2014-09-23: Version 3.29.84
321 Performance and stability improvements on all platforms.
324 2014-09-23: Version 3.29.83
326 Performance and stability improvements on all platforms.
329 2014-09-23: Version 3.29.82
331 Fix escaped index JSON parsing (Chromium issue 416449).
333 Performance and stability improvements on all platforms.
336 2014-09-17: Version 3.29.70
338 Enable ES6 generators (issue 2355).
340 Fixed int vs. uintptr_t confusion (plus some cleanup on the way) (issue
343 Move configuration of ResourceConstraints to Isolate construction.
345 Performance and stability improvements on all platforms.
348 2014-09-16: Version 3.29.66
350 Currently, a new isolate is created in an uninitialized state, and
351 several API methods will automatically initialize it. During this
352 uninitialized state, code event handlers and function entry handlers can
353 be attached to the isolate.
355 Performance and stability improvements on all platforms.
358 2014-09-15: Version 3.29.64
360 ES6: String(symbol) should work like symbol.toString (issue 3554).
362 Arrow functions: Cleanup handling of the prototype property (issue
365 Remove V8_HOST_CAN_READ_UNALIGNED and its uses (Chromium issue 412967).
367 Fix Smi vs. HeapObject confusion in HConstants (Chromium issue 412215).
369 Performance and stability improvements on all platforms.
372 2014-09-12: Version 3.29.59
374 Do not use wide reads in CopyCharsUnsigned (Chromium issue 412967).
376 Fix inaccurate type condition in Hydrogen (Chromium issue 412210).
378 Fix crash in ScriptDebugServer::wrapCallFrames (Chromium issue 411196).
380 Performance and stability improvements on all platforms.
383 2014-09-11: Version 3.29.57
385 ES6: Add support for method shorthand in object literals (issue 3516).
387 Unbreak FreeBSD build (hopefully) (issue 3548).
389 Performance and stability improvements on all platforms.
392 2014-09-09: Version 3.29.53
394 Performance and stability improvements on all platforms.
397 2014-09-08: Version 3.29.50
399 Allocate a new empty number dictionary when resetting elements (Chromium
402 Performance and stability improvements on all platforms.
405 2014-09-05: Version 3.29.43
407 Enforce correct number comparisons when inlining Array.indexOf (Chromium
410 Performance and stability improvements on all platforms.
413 2014-09-04: Version 3.29.41
415 Performance and stability improvements on all platforms.
418 2014-09-03: Version 3.29.40
420 Use correct receiver for DOM accessors on the prototype chain (issue
423 Performance and stability improvements on all platforms.
426 2014-09-02: Version 3.29.38
428 Do not clear weak monomorphic IC after context disposal (Chromium issue
431 Turn on job-based sweeping (issue 3104).
433 Performance and stability improvements on all platforms.
436 2014-09-01: Version 3.29.35
438 Performance and stability improvements on all platforms.
441 2014-08-29: Version 3.29.29
443 Performance and stability improvements on all platforms.
446 2014-08-28: Version 3.29.27
448 Performance and stability improvements on all platforms.
451 2014-08-28: Version 3.29.25
453 Performance and stability improvements on all platforms.
456 2014-08-28: Version 3.29.24
458 Tweaks to generate XP-compatible .exes (Chromium issue 407517).
460 Performance and stability improvements on all platforms.
463 2014-08-28: Version 3.29.23
465 Performance and stability improvements on all platforms.
468 2014-08-27: Version 3.29.20
470 Handle empty allocation list in CodeRange properly (issue 3540, Chromium
473 Fixed inlining of constant values (issue 3529).
475 Performance and stability improvements on all platforms.
478 2014-08-25: Version 3.29.17
480 Performance and stability improvements on all platforms.
483 2014-08-24: Version 3.29.16
485 Fix issue with numeric property names (issue 3507).
487 Add back the duplicate property checker (issue 3498).
489 Performance and stability improvements on all platforms.
492 2014-08-22: Version 3.29.14
494 Don't inline Array.shift() if receiver map is not extensible (Chromium
497 Performance and stability improvements on all platforms.
500 2014-08-21: Version 3.29.11
502 Refactor ParseObjectLiteral.
504 Support symbol-named properties in API (issue 3394).
506 Suppress test262 test that tests duplicate properties.
508 ES6: Duplicate properties are no longer an error (issue 3498).
510 Expose function CheckDebugBreak in the debugger api.
512 Remove RegExp.$input (issue 3486).
514 Performance and stability improvements on all platforms.
517 2014-08-21: Version 3.29.10
519 ES6: Make sure we do not store -0 as the key in Map/Set (issue 3515).
521 Remove removed flags from tests.
523 Expose well-known Symbols to C++ API (Chromium issue 341423).
525 Implement ES6 Array.of() (issue 3427).
527 Performance and stability improvements on all platforms.
530 2014-08-20: Version 3.29.9
532 Correctly handle holes when concat()ing double arrays (Chromium issue
535 [turbofan] Refactor the InstructionSelector tests (issue 3489).
537 ES6: Make Map/Set constructors support iterable values (issue 3508).
539 WeakMap/WeakSet: Add test for non object keys (issue 3399).
541 Performance and stability improvements on all platforms.
544 2014-08-12: Version 3.28.71
546 ToNumber(Symbol) should throw TypeError (issue 3499).
548 Performance and stability improvements on all platforms.
551 2014-08-11: Version 3.28.69
553 Performance and stability improvements on all platforms.
556 2014-08-09: Version 3.28.65
558 Performance and stability improvements on all platforms.
561 2014-08-08: Version 3.28.64
563 ES6: Implement WeakMap and WeakSet constructor logic (issue 3399).
565 Enable ES6 unscopables (issue 3401).
567 Turn on harmony_unscopables for es_staging (issue 3401).
569 Remove proxies from --harmony switch for M38, because problems.
571 Reland "Add initial support for compiler unit tests using GTest/GMock."
574 Enable ES6 iteration by default (issue 2214).
576 Performance and stability improvements on all platforms.
579 2014-08-07: Version 3.28.62
581 Only escape U+0022 in argument values of `String.prototype` HTML methods
584 Update webkit test for expected own properties.
586 This implements unscopables (issue 3401).
588 Add `CheckObjectCoercible` for the `String.prototype` HTML methods
591 Add initial support for compiler unit tests using GTest/GMock (issue
594 Trigger exception debug events on Promise reject (Chromium issue
597 Refactor unit tests for the base library to use GTest (issue 3489).
599 Performance and stability improvements on all platforms.
602 2014-08-06: Version 3.28.60
604 Enable ES6 Map and Set by default (issue 1622).
606 Performance and stability improvements on all platforms.
609 2014-08-06: Version 3.28.59
611 Removed GetConstructor from the API. Instead either get the
612 "constructor" property stored in the prototype, or keep a side-table.
614 Enable ES6 Symbols by default (issue 2158).
616 Performance and stability improvements on all platforms.
619 2014-08-05: Version 3.28.57
621 Add dependencies on gtest and gmock.
623 Performance and stability improvements on all platforms.
626 2014-08-04: Version 3.28.54
628 Performance and stability improvements on all platforms.
631 2014-08-01: Version 3.28.53
633 Performance and stability improvements on all platforms.
636 2014-07-31: Version 3.28.52
638 Performance and stability improvements on all platforms.
641 2014-07-31: Version 3.28.51
643 Drop deprecated memory related notification API (Chromium issue 397026).
645 Performance and stability improvements on all platforms.
648 2014-07-31: Version 3.28.50
650 Use emergency memory in the case of out of memory during evacuation
651 (Chromium issue 395314).
653 Performance and stability improvements on all platforms.
656 2014-07-30: Version 3.28.48
658 Fix Object.freeze with field type tracking. Keep the descriptor properly
659 intact while update the field type (issue 3458).
661 Performance and stability improvements on all platforms.
664 2014-07-29: Version 3.28.45
666 Performance and stability improvements on all platforms.
669 2014-07-28: Version 3.28.43
671 Performance and stability improvements on all platforms.
674 2014-07-25: Version 3.28.38
676 Fix issue with setters and their holders in accessors.cc (Chromium issue
679 Introduce more debug events for promises (issue 3093).
681 Move gc notifications from V8 to Isolate and make idle hint mandatory
682 (Chromium issue 397026).
684 The accessors should get the value from the holder and not from this
687 Performance and stability improvements on all platforms.
690 2014-07-24: Version 3.28.35
692 Rebaseline/update the intl tests with ICU 52 (issue 3454).
694 Expose the content of Sets and WeakSets through SetMirror (issue 3093).
696 Performance and stability improvements on all platforms.
699 2014-07-23: Version 3.28.32
701 Update ICU to 5.2 (matching chromium) (issue 3452).
703 Performance and stability improvements on all platforms.
706 2014-07-22: Version 3.28.31
708 Remove harmony-typeof.
710 Implement String.prototype.codePointAt and String.fromCodePoint (issue
713 Performance and stability improvements on all platforms.
716 2014-07-21: Version 3.28.30
718 Performance and stability improvements on all platforms.
721 2014-07-21: Version 3.28.29
723 Performance and stability improvements on all platforms.
726 2014-07-18: Version 3.28.28
728 Performance and stability improvements on all platforms.
731 2014-07-17: Version 3.28.26
733 Ship ES6 Math functions (issue 2938).
735 Make ToPrimitive throw on symbol wrappers (issue 3442).
737 Performance and stability improvements on all platforms.
740 2014-07-16: Version 3.28.25
742 Performance and stability improvements on all platforms.
745 2014-07-16: Version 3.28.24
747 Removed some copy-n-paste from StackFrame::Foo API entries (issue 3436).
749 Performance and stability improvements on all platforms.
752 2014-07-15: Version 3.28.23
754 Fix error message about read-only symbol properties (issue 3441).
756 Include symbol properties in Object.{create,defineProperties} (issue
759 Performance and stability improvements on all platforms.
762 2014-07-14: Version 3.28.22
764 Performance and stability improvements on all platforms.
767 2014-07-11: Version 3.28.21
769 Make `let` usable as an identifier in ES6 sloppy mode (issue 2198).
771 Support ES6 Map and Set in heap profiler (issue 3368).
773 Performance and stability improvements on all platforms.
776 2014-07-10: Version 3.28.20
778 Remove deprecate counter/histogram methods.
780 Fixed printing of external references (Chromium issue 392068).
782 Fix several issues with ES6 redeclaration checks (issue 3426).
784 Performance and stability improvements on all platforms.
787 2014-07-09: Version 3.28.19
789 Performance and stability improvements on all platforms.
792 2014-07-09: Version 3.28.18
794 Reland "Postpone termination exceptions in debug scope." (issue 3408).
796 Performance and stability improvements on all platforms.
799 2014-07-08: Version 3.28.17
801 MIPS: Fix computed properties on object literals with a double as
802 propertyname (Chromium issue 390732).
804 Performance and stability improvements on all platforms.
807 2014-07-08: Version 3.28.16
809 Fix computed properties on object literals with a double as propertyname
810 (Chromium issue 390732).
812 Avoid brittle use of .bind in Promise.all (issue 3420).
814 Performance and stability improvements on all platforms.
817 2014-07-07: Version 3.28.15
819 Remove a bunch of Isolate::UncheckedCurrent calls.
821 Performance and stability improvements on all platforms.
824 2014-07-07: Version 3.28.14
826 Use the HeapObjectIterator to scan-on-scavenge map pages (Chromium issue
829 Introduce debug events for Microtask queue (Chromium issue 272416).
831 Split out libplatform into a separate libary.
833 Add clang-format to presubmit checks.
835 Stack traces exposed to Javascript should omit extensions (issue 311).
837 Remove deprecated v8::Context::HasOutOfMemoryException.
839 Postpone termination exceptions in debug scope (issue 3408).
841 Performance and stability improvements on all platforms.
844 2014-07-04: Version 3.28.13
849 2014-07-04: Version 3.28.12
851 Use the HeapObjectIterator to scan-on-scavenge map pages (Chromium issue
854 Introduce debug events for Microtask queue (Chromium issue 272416).
856 Performance and stability improvements on all platforms.
859 2014-07-03: Version 3.28.11
861 Split out libplatform into a separate libary.
863 Performance and stability improvements on all platforms.
866 2014-07-03: Version 3.28.10
868 Add clang-format to presubmit checks.
870 Stack traces exposed to Javascript should omit extensions (issue 311).
872 Remove deprecated v8::Context::HasOutOfMemoryException.
874 Postpone termination exceptions in debug scope (issue 3408).
876 Performance and stability improvements on all platforms.
879 2014-07-02: Version 3.28.9
881 Make freeze & friends ignore private properties (issue 3419).
883 Introduce a builddeps make target (issue 3418).
885 Performance and stability improvements on all platforms.
888 2014-07-01: Version 3.28.8
890 Remove static initializer from isolate.
892 ES6: Add missing Set.prototype.keys function (issue 3411).
894 Introduce debug events for promises (issue 3093).
896 Performance and stability improvements on all platforms.
899 2014-06-30: Version 3.28.7
901 Performance and stability improvements on all platforms.
904 2014-06-30: Version 3.28.6
906 Unbreak "os" stuff in shared d8 builds (issue 3407).
908 Performance and stability improvements on all platforms.
911 2014-06-26: Version 3.28.4
913 Compile optimized code with active debugger but no break points
914 (Chromium issue 386492).
916 Optimize Map/Set.prototype.forEach.
918 Collect garbage with kReduceMemoryFootprintMask in IdleNotification
919 (Chromium issue 350720).
921 Performance and stability improvements on all platforms.
924 2014-06-26: Version 3.28.3
926 Grow heap slower if GC freed many global handles (Chromium issue
929 Performance and stability improvements on all platforms.
932 2014-06-25: Version 3.28.2
934 Remove bogus assertions in HCompareObjectEqAndBranch (Chromium issue
937 Do not eagerly update allow_osr_at_loop_nesting_level (Chromium issue
940 Set host_arch to ia32 on machines with a 32bit userland but a 64bit
941 kernel (Chromium issue 368384).
943 Map/Set: Implement constructor parameter handling (issue 3398).
945 Performance and stability improvements on all platforms.
948 2014-06-24: Version 3.28.1
950 Support LiveEdit on Arm64 (Chromium issue 368580).
952 Run JS micro tasks in the appropriate context (Chromium issue 385349).
954 Add a use counter API.
956 Set host_arch to ia32 on machines with a 32bit userland but a 64bit
959 Performance and stability improvements on all platforms.
962 2014-06-23: Version 3.28.0
964 MIPS: Support LiveEdit (Chromium issue 368580).
966 Array.concat: properly go to dictionary mode when required (Chromium
969 Support LiveEdit on ARM (Chromium issue 368580).
971 Performance and stability improvements on all platforms.
974 2014-06-18: Version 3.27.34
976 Reduce number of writes to DependentCode array when inserting dependent
977 IC (Chromium issue 305878).
979 Performance and stability improvements on all platforms.
982 2014-06-17: Version 3.27.33
984 Do GC if CodeRange fails to allocate a block (Chromium issue 305878).
986 Throw syntax error when a getter/setter has the wrong number of params
989 Performance and stability improvements on all platforms.
992 2014-06-17: Version 3.27.32
994 Performance and stability improvements on all platforms.
997 2014-06-16: Version 3.27.31
1002 2014-06-16: Version 3.27.30
1004 Fix representation of Phis for mutable-heapnumber-in-object-literal
1005 properties (issue 3392).
1007 Performance and stability improvements on all platforms.
1010 2014-06-16: Version 3.27.29
1012 Emulate MLS on pre-ARMv6T2. Cleaned up thumbee vs. thumb2 confusion.
1014 X87: Fixed flooring division by a power of 2, once again.. (issue 3259).
1016 Fixed undefined behavior in RNG (Chromium issue 377790).
1018 Performance and stability improvements on all platforms.
1021 2014-06-13: Version 3.27.28
1023 Add v8::Promise::Then (Chromium issue 371288).
1025 Performance and stability improvements on all platforms.
1028 2014-06-12: Version 3.27.27
1030 Fix detection of VFP3D16 on Galaxy Tab 10.1 (issue 3387).
1032 Performance and stability improvements on all platforms.
1035 2014-06-12: Version 3.27.26
1037 MIPS: Fixed flooring division by a power of 2, once again.. (issue
1040 Fixed flooring division by a power of 2, once again.. (issue 3259).
1042 Fix unsigned comparisons (issue 3380).
1044 Performance and stability improvements on all platforms.
1047 2014-06-11: Version 3.27.25
1049 Performance and stability improvements on all platforms.
1052 2014-06-11: Version 3.27.24
1054 Fix invalid attributes when generalizing because of incompatible map
1055 change (Chromium issue 382143).
1057 Fix missing smi check in inlined indexOf/lastIndexOf (Chromium issue
1060 Performance and stability improvements on all platforms.
1063 2014-06-06: Version 3.27.23
1065 Performance and stability improvements on all platforms.
1068 2014-06-06: Version 3.27.22
1070 Performance and stability improvements on all platforms.
1073 2014-06-06: Version 3.27.21
1075 Turn on harmony_collections for es_staging (issue 1622).
1077 Do not make heap iterable eagerly (Chromium issue 379740).
1079 Performance and stability improvements on all platforms.
1082 2014-06-05: Version 3.27.20
1084 Fix invalid loop condition for Array.lastIndexOf() (Chromium issue
1087 Add API support for passing a C++ function as a microtask callback.
1089 Performance and stability improvements on all platforms.
1092 2014-06-04: Version 3.27.19
1094 Split Put into Put and Remove.
1096 ES6: Add support for values/keys/entries for Map and Set (issue 1793).
1098 Performance and stability improvements on all platforms.
1101 2014-06-03: Version 3.27.18
1103 Remove PROHIBITS_OVERWRITING as it is subsumed by non-configurable
1106 Performance and stability improvements on all platforms.
1109 2014-06-02: Version 3.27.17
1111 BuildNumberToString: Check for undefined keys in the cache (Chromium
1114 HRor and HSar can deoptimize (issue 3359).
1116 Simplify, speed-up correct-context ObjectObserve calls.
1118 Performance and stability improvements on all platforms.
1121 2014-05-29: Version 3.27.16
1123 Allow microtasks to throw exceptions and handle them gracefully
1124 (Chromium issue 371566).
1126 Performance and stability improvements on all platforms.
1129 2014-05-28: Version 3.27.15
1131 Performance and stability improvements on all platforms.
1134 2014-05-27: Version 3.27.14
1136 Reland "Customized support for feedback on calls to Array." and follow-
1137 up fixes (Chromium issues 377198, 377290).
1139 Performance and stability improvements on all platforms.
1142 2014-05-26: Version 3.27.13
1144 Performance and stability improvements on all platforms.
1147 2014-05-26: Version 3.27.12
1149 Check for cached transition to ExternalArray elements kind (issue 3337).
1151 Support ES6 weak collections in heap profiler (Chromium issue 376196).
1153 Performance and stability improvements on all platforms.
1156 2014-05-23: Version 3.27.11
1158 Add support for ES6 Symbol in heap profiler (Chromium issue 376194).
1160 Performance and stability improvements on all platforms.
1163 2014-05-22: Version 3.27.10
1165 Implement Mirror object for Symbols (issue 3290).
1167 Allow debugger to step into Map and Set forEach callbacks (issue 3341).
1169 Fix ArrayShift hydrogen support (Chromium issue 374838).
1171 Use SameValueZero for Map and Set (issue 1622).
1173 Array Iterator next should check for own property.
1175 Performance and stability improvements on all platforms.
1178 2014-05-21: Version 3.27.9
1180 Disable ArrayShift hydrogen support (Chromium issue 374838).
1182 ES6 Map/Set iterators/forEach improvements (issue 1793).
1184 Performance and stability improvements on all platforms.
1187 2014-05-20: Version 3.27.8
1189 Move microtask queueing logic from JavaScript to C++.
1191 Partial revert of "Next bunch of fixes for check elimination" (Chromium
1194 Performance and stability improvements on all platforms.
1197 2014-05-19: Version 3.27.7
1199 Performance and stability improvements on all platforms.
1202 2014-05-19: Version 3.27.6
1204 Performance and stability improvements on all platforms.
1207 2014-05-16: Version 3.27.5
1209 Performance and stability improvements on all platforms.
1212 2014-05-15: Version 3.27.4
1214 Drop thenable coercion cache (Chromium issue 372788).
1216 Skip write barriers when updating the weak hash table (Chromium issue
1219 Performance and stability improvements on all platforms.
1222 2014-05-14: Version 3.27.3
1224 Performance and stability improvements on all platforms.
1227 2014-05-13: Version 3.27.2
1229 Harden %SetIsObserved with RUNTIME_ASSERTs (Chromium issue 371782).
1231 Drop unused static microtask API.
1233 Introduce an api to query the microtask autorun state of an isolate.
1235 Performance and stability improvements on all platforms.
1238 2014-05-12: Version 3.27.1
1240 Object.observe: avoid accessing acceptList properties more than once
1243 Array Iterator prototype should not have a constructor (issue 3293).
1245 Fix typos in unit test for Array.prototype.fill().
1247 Shorten autogenerated error message for functions only (issue 3019,
1248 Chromium issue 331971).
1250 Reland "Removed default Isolate." (Chromium issue 359977).
1252 Performance and stability improvements on all platforms.
1255 2014-05-09: Version 3.27.0
1257 Unbreak samples and tools.
1259 Performance and stability improvements on all platforms.
1262 2014-05-08: Version 3.26.33
1264 Removed default Isolate (Chromium issue 359977).
1266 Performance and stability improvements on all platforms.
1269 2014-05-07: Version 3.26.32
1271 Performance and stability improvements on all platforms.
1274 2014-05-06: Version 3.26.31
1276 Add a basic gn file for V8.
1278 Performance and stability improvements on all platforms.
1281 2014-05-05: Version 3.26.30
1283 Introduce a microtask suppression scope and move microtask methods to
1284 isolate (Chromium issue 369503).
1286 Re-enable Object.observe and add enforcement for security invariants.
1288 Move cache line size calculation directly into CPU::FlushICache
1289 (Chromium issue 359977).
1291 Generation of our home-grown memmove doesn't depend on serializer state
1292 anymore (Chromium issue 359977).
1294 Fix |RunMicrotasks()| leaking reference to the last context being run
1297 Object.defineProperty shouldn't be a hint that we're constructing a
1298 dictionary (Chromium issue 362870).
1300 Performance and stability improvements on all platforms.
1303 2014-05-01: Version 3.26.29
1305 Added a Isolate* parameter to Serializer::enabled() (Chromium issue
1308 ES6: Add support for Array.prototype.fill() (issue 3273).
1310 Performance and stability improvements on all platforms.
1313 2014-04-29: Version 3.26.28
1315 PromiseThen should ignore non-function parameters (Chromium issue
1318 Performance and stability improvements on all platforms.
1321 2014-04-29: Version 3.26.27
1323 Error stack getter should not overwrite itself with a data property
1326 Performance and stability improvements on all platforms.
1329 2014-04-28: Version 3.26.26
1331 Expose promise value through promise mirror (issue 3093).
1333 Simplified CPU/CpuFeatures a bit (Chromium issue 359977).
1335 Performance and stability improvements on all platforms.
1338 2014-04-28: Version 3.26.25
1340 Add timestamps to CPU profile samples (Chromium issue 363976).
1342 Expose promise status through promise mirror (issue 3093).
1344 Remove static CallCompletedCallback handlers.
1346 Added an Isolate* field to NoTrackDoubleFieldsForSerializerScope,
1347 PlatformFeatureScope and BinaryOpIC::State (Chromium issue 359977).
1349 Trigger debug event on not yet caught exception in promises (issue
1352 Unbreak vtunejit=on (issue 3288).
1354 Performance and stability improvements on all platforms.
1357 2014-04-25: Version 3.26.24
1359 MIPS: CodeStubs contain their corresponding Isolate* now. (part 2)
1360 (Chromium issue 359977).
1362 MIPS: CodeStubs contain their corresponding Isolate* now. (part 1)
1363 (Chromium issue 359977).
1365 CodeStubs contain their corresponding Isolate* now. (part 2) (Chromium
1368 Make DescriptorArray::IsMoreGeneralThan() and DescriptorArray::Merge()
1369 compatible again (Chromium issue 365172).
1371 CodeStubs contain their corresponding Isolate* now. (part 1) (Chromium
1374 Performance and stability improvements on all platforms.
1377 2014-04-24: Version 3.26.23
1379 Performance and stability improvements on all platforms.
1382 2014-04-23: Version 3.26.22
1384 Disable field type tracking by default (Chromium issue 365172).
1386 Performance and stability improvements on all platforms.
1389 2014-04-23: Version 3.26.21
1391 Context-allocate all parameters in generators (issue 3280).
1393 Simplify v8/Isolate teardown (Chromium issue 359977).
1395 Performance and stability improvements on all platforms.
1398 2014-04-21: Version 3.26.20
1400 ES6: Add support for Map/Set forEach (Chromium issues 1793, 2323).
1402 Performance and stability improvements on all platforms.
1405 2014-04-18: Version 3.26.19
1407 ES6: Add support for Map/Set forEach (Chromium issues 1793, 2323).
1409 Performance and stability improvements on all platforms.
1412 2014-04-17: Version 3.26.18
1414 Removed Isolate::EnterDefaultIsolate (Chromium issue 359977).
1416 Performance and stability improvements on all platforms.
1419 2014-04-16: Version 3.26.17
1421 Clear invalid field maps in PropertyAccessInfo (Chromium issue 363956).
1423 ES6: Add support for Map/Set forEach (Chromium issues 1793, 2323).
1425 Performance and stability improvements on all platforms.
1428 2014-04-16: Version 3.26.16
1430 Removed EnterIsolateIfNeeded and a soon-to-be-useless assertion
1431 (Chromium issue 359977).
1433 Removed GetDefaultIsolate{Debugger,ForLocking,StackGuard} (Chromium
1436 Performance and stability improvements on all platforms.
1439 2014-04-15: Version 3.26.15
1441 Fix result of LCodeGen::DoWrapReceiver for strict functions and builtins
1442 (Chromium issue 362128).
1444 Performance and stability improvements on all platforms.
1447 2014-04-15: Version 3.26.14
1449 Performance and stability improvements on all platforms.
1452 2014-04-14: Version 3.26.13
1454 Make maps in monomorphic IC stubs weak (issue 2073).
1456 x64: Make sure that the upper half of a 64bit register contains 0 for
1457 int32 values (Chromium issue 360611).
1459 Performance and stability improvements on all platforms.
1462 2014-04-11: Version 3.26.12
1464 Do not use ranges after range analysis (Chromium issue 361608).
1466 Performance and stability improvements on all platforms.
1469 2014-04-10: Version 3.26.11
1471 Performance and stability improvements on all platforms.
1474 2014-04-10: Version 3.26.10
1476 Allow the embedder to pass the virtual memory limit to v8.
1478 Performance and stability improvements on all platforms.
1481 2014-04-09: Version 3.26.9
1483 Fix invalid local property lookup for transitions (Chromium issue
1486 MIPS: Fixed flooring division by -1 (issue 3259).
1488 Fixed flooring division by -1 on ARM (issue 3259).
1490 Make `String.prototype.contains` throw when passing a regular expression
1493 Performance and stability improvements on all platforms.
1496 2014-04-08: Version 3.26.8
1498 Yet another regression test for range analysis (issue 3204).
1500 Performance and stability improvements on all platforms.
1503 2014-04-07: Version 3.26.7
1505 Performance and stability improvements on all platforms.
1508 2014-04-04: Version 3.26.6
1510 Performance and stability improvements on all platforms.
1513 2014-04-03: Version 3.26.5
1515 Performance and stability improvements on all platforms.
1518 2014-04-03: Version 3.26.4
1520 Make stray 'return' an early error.
1522 Show references from weak containers as weak in heap snapshots (Chromium
1525 Make invalid LHSs that are calls late errors (Chromium issue 358346).
1527 Performance and stability improvements on all platforms.
1530 2014-04-02: Version 3.26.3
1532 Support typed arrays in IsMoreGeneralElementsKindTransition (Chromium
1535 Remove debugger_auto_break flag.
1537 Store i18n meta data in hidden symbols instead of js accessible
1538 properties (Chromium issue 354967).
1540 Performance and stability improvements on all platforms.
1543 2014-04-01: Version 3.26.2
1545 Performance and stability improvements on all platforms.
1548 2014-04-01: Version 3.26.1
1550 Fix Type::Intersect to skip uninhabited bitsets (Chromium issue 357330).
1552 Fix PrepareKeyedOperand on arm (Chromium issue 358057).
1554 Performance and stability improvements on all platforms.
1557 2014-03-31: Version 3.26.0
1559 Deprecate Start/StopCpuProfiling methods (issue 3213).
1561 Don't crash if we get a timezone change notification on an uninitialized
1562 isolate (Chromium issue 357362).
1564 Performance and stability improvements on all platforms.
1567 2014-03-28: Version 3.25.30
1569 NativeContext::map_cache reference should be strong in heap snapshots
1570 (Chromium issue 357060).
1572 Performance and stability improvements on all platforms.
1575 2014-03-27: Version 3.25.29
1577 Performance and stability improvements on all platforms.
1580 2014-03-27: Version 3.25.28
1582 Performance and stability improvements on all platforms.
1585 2014-03-26: Version 3.25.27
1587 Promise constructor should not be enumerable (Chromium issue 352597).
1589 Performance and stability improvements on all platforms.
1592 2014-03-26: Version 3.25.26
1594 Performance and stability improvements on all platforms.
1597 2014-03-25: Version 3.25.25
1599 Roll ICU 239289:258359 and add support for external ICU data tables
1600 (issue 3142, Chromium issue 72633).
1602 Performance and stability improvements on all platforms.
1605 2014-03-25: Version 3.25.24
1607 Add support for per-isolate private symbols.
1609 No longer OOM on invalid string length (issue 3060).
1611 Remove Failure::OutOfMemory propagation and
1612 V8::IgnoreOutOfMemoryException (issue 3060).
1614 Tentative Windows dll build fix: Don't V8_EXPORT ScriptCompiler::Source
1617 Performance and stability improvements on all platforms.
1620 2014-03-24: Version 3.25.23
1622 Rename A64 port to ARM64 port (Chromium issue 354405).
1624 Fix missing access check in Runtime_SetPrototype (Chromium issue
1627 Fix polymorphic hydrogen handling of SLOPPY_ARGUMENTS_ELEMENTS (Chromium
1630 Performance and stability improvements on all platforms.
1633 2014-03-20: Version 3.25.22
1635 Increase the "local variables in a function" limit (issue 3205).
1637 Implement ES6 symbol registry and predefined symbols.
1639 Throw exception on invalid string length instead of OOM (Chromium issue
1642 Performance and stability improvements on all platforms.
1645 2014-03-20: Version 3.25.21
1647 Performance and stability improvements on all platforms.
1650 2014-03-20: Version 3.25.20
1652 Fix polymorphic keyed loads for SLOPPY_ARGUMENTS_ELEMENTS (Chromium
1655 Performance and stability improvements on all platforms.
1658 2014-03-19: Version 3.25.19
1660 Performance and stability improvements on all platforms.
1663 2014-03-19: Version 3.25.18
1665 Performance and stability improvements on all platforms.
1668 2014-03-19: Version 3.25.17
1670 Performance and stability improvements on all platforms.
1673 2014-03-18: Version 3.25.16
1675 Apply numeric casts correctly in typed arrays and related code (Chromium
1678 Performance and stability improvements on all platforms.
1681 2014-03-18: Version 3.25.15
1683 Don't generate keyed store ICs for global proxies (Chromium issue
1686 MIPS: Make invalid LHSs a parse-time (reference) error (Chromium issue
1689 Make invalid LHSs a parse-time (reference) error (Chromium issue
1692 Add Promises/A+ Compliance Test Suite (Chromium issue 347095).
1694 Split Promise API into Promise/Resolver.
1696 Performance and stability improvements on all platforms.
1699 2014-03-17: Version 3.25.14
1701 Performance and stability improvements on all platforms.
1704 2014-03-17: Version 3.25.13
1706 Move profiler callback interfaces from v8.h to v8-profiler.h.
1708 Performance and stability improvements on all platforms.
1711 2014-03-14: Version 3.25.12
1713 PromiseCoerce should deal with an error during accessing "then"
1714 (Chromium issue 347095).
1716 Propagate updated offsets in BoundsCheckBbData (Chromium issue 350863).
1718 Add regression test for range analysis bug (issue 3204).
1720 Continued fix for 351257. Reusing the feedback vector is too complex
1721 (Chromium issue 351257).
1723 StopCpuProfiling should return non-const CpuProfile (issue 3213).
1725 Allow for compiling with xcode 5.1 (which doesn't have gcc anymore).
1727 Performance and stability improvements on all platforms.
1730 2014-03-14: Version 3.25.11
1732 MIPS: Remove uses of CanBeNegative() in HMod (issue 3204).
1734 MIPS: Remove uses of RangeCanInclude() in flooring division by power of
1737 MIPS: Fix uses of range analysis results in HChange (issue 3204).
1739 Make translation of modulus operation '--stress-opt'-proof (Chromium
1742 Remove uses of CanBeNegative() in HMod (issue 3204).
1744 Remove uses of RangeCanInclude() in flooring division by power of 2
1747 Fix uses of range analysis results in HChange (issue 3204).
1749 Performance and stability improvements on all platforms.
1752 2014-03-14: Version 3.25.10
1754 This version was not committed due to script failures.
1757 2014-03-13: Version 3.25.9
1759 Reland "Enable Object.observe by default" again (issue 2409).
1761 Use intrinsics for builtin ArrayBuffer property accesses (Chromium issue
1764 Performance and stability improvements on all platforms.
1767 2014-03-12: Version 3.25.8
1769 Fix HIsSmiAndBranch::KnownSuccessorBlock() by deleting it (Chromium
1772 Fix handling of polymorphic array accesses with constant index (Chromium
1775 Fix lazy deopt after tagged binary ops (Chromium issue 350434).
1777 MIPS: Cleanup some of the range uses in ModI/DivI (issue 3204).
1779 Fix issue with getOwnPropertySymbols and hidden properties (Chromium
1782 Cleanup some of the range uses in ModI/DivI (issue 3204).
1784 PromiseCoerce should ignore primitive values (Chromium issue 347095).
1786 Use a per-isolate cache for the date object JS bits (Chromium issue
1789 Performance and stability improvements on all platforms.
1792 2014-03-11: Version 3.25.7
1794 Promise.all and Promise.race should reject non-array parameter (Chromium
1797 Promise.all and Promise race should use "then" rather than "chain"
1798 (Chromium issue 347427).
1800 Merge the "Compute Minus Zero Checks" phase into the range analysis
1803 Performance and stability improvements on all platforms.
1806 2014-03-10: Version 3.25.6
1808 Replace the recursion in PropagateMinusZeroChecks() with a loop and a
1809 worklist (issue 3204).
1811 Reland "Enable Object.observe by default" (issue 2409).
1813 Enable Object.observe by default (issue 2409).
1815 AllocationTracker now maintains a map from address range to stack trace
1816 that allocated the range. When snapshot is generated the map is used to
1817 find construction stack trace for an object using its address (Chromium
1820 Introduce Runtime_GetAllScopesDetails to get all scopes at once for a
1821 frame (Chromium issue 340285).
1823 Reduce heavy runtime calls from debug mirrors (Chromium issue 340285).
1825 Check and clear date cache in DateCurrentTime, DateLocalTimezone and
1826 getTimezoneOffset (Chromium issue 142141).
1828 Performance and stability improvements on all platforms.
1831 2014-03-06: Version 3.25.5
1833 Fix HConstants with Smi-ranged HeapNumber values (Chromium issue
1836 Fix issues with JSON stringify replacer array (issues 3200, 3201).
1838 Performance and stability improvements on all platforms.
1841 2014-03-05: Version 3.25.4
1843 x64: Fix LMathMinMax for constant Smi right-hand operands (Chromium
1846 Performance and stability improvements on all platforms.
1849 2014-03-04: Version 3.25.3
1851 Clear optimized code cache in shared function info when code gets
1852 deoptimized (Chromium issue 343609).
1854 Fixed constant folding for Math.clz32 (Chromium issue 347906).
1856 Fix JSObject::PrintTransitions (Chromium issue 347912).
1858 Fix handling of constant global variable assignments (Chromium issue
1861 Removed bogus ASSERT (Chromium issue 347542).
1863 Mark HCompareMap as having Tagged representation (Chromium issue
1866 Fix crasher in Object.getOwnPropertySymbols (Chromium issue 346141).
1868 Fix the bit massaging code in CompleteParserRecorder::WriteNumber
1869 (Chromium issue 346221).
1871 Don't eliminate loads with incompatible types or representations
1872 (Chromium issue 346343).
1874 Check that after a weak callback, the handle is either dead or strong
1875 (Chromium issue 346061).
1877 Lazy preparsing vs. lazy parsing fix (Chromium issue 346207).
1879 Performance and stability improvements on all platforms.
1882 2014-02-25: Version 3.25.2
1884 Fix the bit massaging code in CompleteParserRecorder::WriteNumber
1885 (Chromium issue 346221).
1887 Revert r19455 "Load target types and handlers before IC computation."
1888 (Chromium issue 346149).
1890 Don't eliminate loads with incompatible types or representations
1891 (Chromium issue 346343).
1893 Fix for a smi stores optimization on x64 with a regression test
1894 (Chromium issue 345715).
1896 Check that after a weak callback, the handle is either dead or strong
1897 (Chromium issue 346061).
1899 negative bounds checking on realm calls (Chromium issue 344285).
1901 Lazy preparsing vs. lazy parsing fix (Chromium issue 346207).
1903 Fix optimistic BCE to back off after deopt (issue 3176).
1905 Performance and stability improvements on all platforms.
1908 2014-02-21: Version 3.25.1
1910 Performance and stability improvements on all platforms.
1913 2014-02-19: Version 3.25.0
1915 ES6: Tighten up Object.prototype.__proto__ (issue 3064).
1917 Fix Hydrogen bounds check elimination (Chromium issue 344186).
1919 Performance and stability improvements on all platforms.
1922 2014-02-19: Version 3.24.40
1924 A64: Let the MacroAssembler resolve branches to distant targets (issue
1927 Fixed and improved code for integral division. Fixed and extended tests
1930 MIPS: Fix assignment of function name constant (issue 3138).
1932 Fix assignment of function name constant (issue 3138).
1934 Performance and stability improvements on all platforms.
1937 2014-02-14: Version 3.24.39
1939 Introduce --job-based-sweeping flag and use individual jobs for sweeping
1940 if set (issue 3104).
1942 Performance and stability improvements on all platforms.
1945 2014-02-13: Version 3.24.38
1947 Merge experimental/a64 to bleeding_edge (issue 3113).
1949 Performance and stability improvements on all platforms.
1952 2014-02-12: Version 3.24.37
1954 Fix spec violations in JSON.stringify wrt replacer array (issue 3135).
1956 Performance and stability improvements on all platforms.
1959 2014-02-11: Version 3.24.36
1961 Fix inconsistencies wrt whitespaces (issue 3109).
1963 Performance and stability improvements on all platforms.
1966 2014-02-10: Version 3.24.35
1968 Fix inconsistencies wrt whitespaces (issue 3109).
1970 Performance and stability improvements on all platforms.
1973 2014-02-07: Version 3.24.34
1975 Performance and stability improvements on all platforms.
1978 2014-02-06: Version 3.24.33
1980 Allow externalizing strings in old pointer space (Chromium issue
1983 Performance and stability improvements on all platforms.
1986 2014-02-05: Version 3.24.32
1988 Add Box object to heap profiler.
1990 Check the offset argument of TypedArray.set for fitting into Smi
1991 (Chromium issue 340125).
1993 Performance and stability improvements on all platforms.
1996 2014-02-04: Version 3.24.31
1998 Fix short-circuiting logical and/or in HOptimizedGraphBuilder (Chromium
2001 Elements field of newly allocated JSArray could be left uninitialized in
2002 some cases (fast literal case) (Chromium issue 340124).
2004 Re-enable escape analysis.
2006 Performance and stability improvements on all platforms.
2009 2014-02-03: Version 3.24.30
2011 Performance and stability improvements on all platforms.
2014 2014-02-01: Version 3.24.29
2016 Performance and stability improvements on all platforms.
2019 2014-01-31: Version 3.24.28
2021 Don't crash in Array.join() if the resulting string exceeds the max
2022 string length (Chromium issue 336820).
2024 Implements ES6 String.prototype.normalize method (issue 2943).
2026 Performance and stability improvements on all platforms.
2029 2014-01-30: Version 3.24.27
2031 Performance and stability improvements on all platforms.
2034 2014-01-29: Version 3.24.26
2036 ES6: Map and Set needs to normalize minus zero (issue 3069).
2038 Make `String.prototype.{starts,ends}With` throw when passing a regular
2039 expression (issue 3070).
2041 Performance and stability improvements on all platforms.
2044 2014-01-28: Version 3.24.25
2046 Performance and stability improvements on all platforms.
2049 2014-01-27: Version 3.24.24
2051 MIPS: Reduce the stack requirements of GetNoCodeAgeSequence (issue
2054 Delete v8_shell target now that chrome uses d8 (Chromium issue 331585).
2056 ARM: Reduce the stack requirements of GetNoCodeAgeSequence (issue 3111).
2058 Performance and stability improvements on all platforms.
2061 2014-01-24: Version 3.24.23
2063 Performance and stability improvements on all platforms.
2066 2014-01-23: Version 3.24.22
2068 Fix compilation on x64 architectures (issue 3110).
2070 Ensure we don't overwrite transitions in SetPropertyIgnoreAttributes
2071 (Chromium issue 326155).
2073 ES6: Implement Object.setPrototypeOf (issue 2675).
2075 Fixed floor-of-div optimization (Chromium issue 334708).
2077 Performance and stability improvements on all platforms.
2080 2014-01-22: Version 3.24.21
2082 Performance and stability improvements on all platforms.
2085 2014-01-21: Version 3.24.20
2087 ES6: Implement Object.setPrototypeOf (issue 2675).
2089 Performance and stability improvements on all platforms.
2092 2014-01-20: Version 3.24.19
2094 Introduce a setting to control the toolset for which d8 is compiled
2097 Performance and stability improvements on all platforms.
2100 2014-01-17: Version 3.24.18
2102 Performance and stability improvements on all platforms.
2105 2014-01-16: Version 3.24.17
2107 Make cells pointing to JSObjects weak in optimized code (issue 2073).
2109 Performance and stability improvements on all platforms.
2112 2014-01-15: Version 3.24.16
2114 Annotate mapped memory regions for LeakSanitizer (Chromium issue
2117 Turn Runtime_MigrateInstance into Runtime_TryMigrateInstance (Chromium
2120 Performance and stability improvements on all platforms.
2123 2014-01-14: Version 3.24.15
2125 Introduce an API mirroring the gc extension.
2127 Performance and stability improvements on all platforms.
2130 2014-01-10: Version 3.24.14
2132 ES6: Add Object.getOwnPropertySymbols (issue 3049).
2134 Performance and stability improvements on all platforms.
2137 2014-01-09: Version 3.24.13
2139 Add Isolate parameter to HandleScope::NumberOfHandles (Chromium issue
2142 Removed v8::AssertNoGCScope.
2144 Performance and stability improvements on all platforms.
2147 2014-01-08: Version 3.24.12
2149 Correctly handle instances without elements in polymorphic keyed
2150 load/store (Chromium issue 331416).
2152 Fix selection of popular pages in store buffer (Chromium issue 331444).
2154 Prepare removal of ObjectTemplate::New without Isolate parameter
2155 (Chromium issue 324225).
2157 Performance and stability improvements on all platforms.
2160 2014-01-07: Version 3.24.11
2162 Remove generated makefiles on linux when running gyp_v8
2163 (Chromium issue 331475)
2165 Fix building d8 with readline support due to API changes
2167 Performance and stability improvements on all platforms.
2170 2014-01-03: Version 3.24.10
2172 Reland r18383: More API cleanup (Chromium issue 324225).
2174 MIPS: Fix loading of global object in LWrapReceiver (Chromium issue
2177 Performance and stability improvements on all platforms.
2180 2014-01-02: Version 3.24.9
2182 Performance and stability improvements on all platforms.
2185 2013-12-30: Version 3.24.8
2187 ARM: fix loading of global object in LWrapReceiver (Chromium issue
2190 Fix a race between concurrent recompilation and OSR (Chromium issue
2193 Turn off concurrent sweeping (issue 3071).
2195 Performance and stability improvements on all platforms.
2198 2013-12-23: Version 3.24.7
2200 Fix small spec violation in String.prototype.split (issue 3026).
2202 Correctly resolve forcibly context allocated parameters in debug-
2203 evaluate (Chromium issue 325676).
2205 Introduce Function::GetBoundFunction.
2207 Performance and stability improvements on all platforms.
2210 2013-12-20: Version 3.24.6
2212 Performance and stability improvements on all platforms.
2215 2013-12-19: Version 3.24.5
2217 Performance and stability improvements on all platforms.
2220 2013-12-18: Version 3.24.4
2222 Removed all stuff marked as V8_DEPRECATED.
2224 Performance and stability improvements on all platforms.
2227 2013-12-17: Version 3.24.3
2229 Performance and stability improvements on all platforms.
2232 2013-12-17: Version 3.24.2
2234 Flush instruction cache for deserialized code objects.
2236 Performance and stability improvements on all platforms.
2239 2013-12-13: Version 3.24.1
2241 Fix polymorphic inlined calls with migrating prototypes.
2243 Fixed global object leak caused by overwriting the global receiver (the
2244 global proxy) in the global object with the global object itself
2245 (Chromium issue 324812).
2247 Initialize Date parse cache with SMI instead of double to workaround
2248 sharing mutable heap numbers in snapshot (Chromium issue 280531).
2250 Switch armv7 setting to arm_version==7 in v8 gyp files (Chromium issue
2253 Performance and stability improvements on all platforms.
2256 2013-12-09: Version 3.24.0
2258 Performance and stability improvements on all platforms.
2261 2013-12-04: Version 3.23.18
2263 Performance and stability improvements on all platforms.
2266 2013-12-03: Version 3.23.17
2268 Performance and stability improvements on all platforms.
2271 2013-12-02: Version 3.23.16
2273 Array builtins need to be prevented from changing frozen objects, and
2274 changing structure on sealed objects (Chromium issue 299979).
2276 Performance and stability improvements on all platforms.
2279 2013-11-29: Version 3.23.15
2281 Fix context register allocation in LTransitionElementsKind
2282 (Chromium issue 324306).
2284 Fix bug in inlining Function.apply (Chromium issue 323942).
2286 Ensure that length is Smi in TypedArrayFromArrayLike constructor
2287 (Chromium issue 324028).
2289 Performance and stability improvements on all platforms.
2292 2013-11-28: Version 3.23.14
2294 Shorten autogenerated error message (issue 3019).
2296 Performance and stability improvements on all platforms.
2299 2013-11-27: Version 3.23.13
2301 Increase precision for base conversion for large integers (issue 3025).
2303 Flatten cons string for single character substrings (Chromium issue
2306 Performance and stability improvements on all platforms.
2309 2013-11-26: Version 3.23.12
2311 Performance and stability improvements on all platforms.
2314 2013-11-25: Version 3.23.11
2316 Deprecate old versions of Isolate::SetData and GetData.
2318 Performance and stability improvements on all platforms.
2321 2013-11-22: Version 3.23.10
2323 Remove preemption thread and API.
2326 Performance and stability improvements on all platforms.
2329 2013-11-21: Version 3.23.9
2331 API: Change AdjustAmountOfExternalAllocatedMemory calls to use int64_t
2332 instead of intptr_t.
2334 Remove deprecated v8::SetResourceConstraints without Isolate parameter.
2336 Remove deprecated v8-defaults.h and defaults.cc.
2337 (Chromium issue 312241)
2339 Make it possible to add more than one piece of embedder data to
2341 (Chromium issue 317398)
2343 Performance and stability improvements on all platforms.
2346 2013-11-20: Version 3.23.8
2348 Fixed crashes exposed though fuzzing.
2349 (Chromium issue 320948)
2351 Deprecated v8::External::New without Isolate parameter.
2353 Made number of available threads isolate-dependent and exposed it to
2354 ResourceConstraints.
2357 Performance and stability improvements on all platforms.
2360 2013-11-19: Version 3.23.7
2362 Bugfix: dependent code field in AllocationSite was keeping code objects
2363 alive even after context death.
2364 (Chromium issue 320532)
2366 Fixed data view accessors to throw execptions on offsets bigger than
2370 Performance and stability improvements on all platforms.
2373 2013-11-18: Version 3.23.6
2375 Limit size of dehoistable array indices.
2376 (Chromium issues 319835, 319860)
2378 Limit the size for typed arrays to MaxSmi.
2379 (Chromium issue 319722)
2381 Performance and stability improvements on all platforms.
2384 2013-11-15: Version 3.23.5
2386 Fixed missing type feedback check for Generic*String addition.
2387 (Chromium issue 318671)
2389 Fixed duplicate check in DependentCode::Insert.
2390 (Chromium issue 318454)
2392 Performance and stability improvements on all platforms.
2395 2013-11-14: Version 3.23.4
2397 Fixed overflow in TypedArray initialization function.
2398 (Chromium issue 319120)
2400 Performance and stability improvements on all platforms.
2403 2013-11-13: Version 3.23.3
2405 Fixed compilation with GCC 4.8.
2408 Added explicit Isolate parameter to External::New.
2409 (Chromium issue 266838)
2411 Performance and stability improvements on all platforms.
2414 2013-11-12: Version 3.23.2
2416 Fixed --extra-code flag for snapshot creation.
2419 Fixed error message wording when instanceof throws.
2420 (Chromium issue 82797, issue 1593)
2422 Performance and stability improvements on all platforms.
2425 2013-11-08: Version 3.23.1
2427 Made HCapturedObjects non-deletable for DCE. (issue 2987)
2429 Use a fixed random seed per default. (issue 1880, 2885)
2431 Fixed y-umlaut to uppercase. (issue 2984)
2433 Performance and stability improvements on all platforms.
2436 2013-11-06: Version 3.23.0
2438 Fixed loading message from an Error object. (Chromium issue 306220)
2440 Made Object.freeze/seal/preventExtensions observable. (issue 2975, 2941)
2442 Made snapshots reproducible. (issue 2885)
2444 Added missing negative dictionary lookup to NonexistentHandlerFrontend.
2447 Performance and stability improvements on all platforms.
2450 2013-10-31: Version 3.22.24
2452 Fixed uint32-to-smi conversion in Lithium.
2453 (Chromium issue 309623)
2455 Performance and stability improvements on all platforms.
2458 2013-10-28: Version 3.22.23
2460 Renamed deprecated __attribute__((no_address_safety_analysis)) to
2461 __attribute__((no_sanitize_address)) (Chromium issue 311283)
2463 Defined DEBUG for v8_optimized_debug=2
2465 Performance and stability improvements on all platforms.
2468 2013-10-25: Version 3.22.22
2470 Record allocation stack traces. (Chromium issue 277984,v8:2949)
2472 Performance and stability improvements on all platforms.
2475 2013-10-24: Version 3.22.21
2477 Performance and stability improvements on all platforms.
2480 2013-10-24: Version 3.22.20
2482 Made Array.prototype.pop throw if the last element is not configurable.
2484 Fixed HObjectAccess for loads from migrating prototypes.
2485 (Chromium issue 305309)
2487 Enabled preaging of code objects when --optimize-for-size.
2488 (Chromium issue 280984)
2490 Exposed v8::Function::GetDisplayName to public API.
2491 (Chromium issue 17356)
2493 Performance and stability improvements on all platforms.
2496 2013-10-23: Version 3.22.19
2498 Fix materialization of captured objects with field tracking.
2499 (Chromium issue 298990)
2501 Performance and stability improvements on all platforms.
2504 2013-10-22: Version 3.22.18
2506 Add tool to visualize machine code/lithium.
2508 Handle misaligned loads and stores in load elimination. Do not track
2509 misaligned loads and be conservative about invalidating misaligned
2510 stores. (issue 2934)
2512 Performance and stability improvements on all platforms.
2515 2013-10-21: Version 3.22.17
2517 Harmony: Implement Math.trunc and Math.sign. (issue 2938)
2519 Performance and stability improvements on all platforms.
2522 2013-10-21: Version 3.22.16
2524 Performance and stability improvements on all platforms.
2527 2013-10-18: Version 3.22.15
2529 Enabled calling the SetReference* & SetObjectGroupId functions with a
2530 Persistent<SubclassOfValue>.
2532 Performance and stability improvements on all platforms.
2535 2013-10-17: Version 3.22.14
2537 Performance and stability improvements on all platforms.
2540 2013-10-16: Version 3.22.13
2542 Do not look up ArrayBuffer on global object in typed array constructor.
2545 Performance and stability improvements on all platforms.
2548 2013-10-15: Version 3.22.12
2550 Added histograms to track fraction of heap spaces and percentage of
2551 generated crankshaft code.
2553 Moved v8_optimized_debug default value to standalone.gypi.
2555 Track JS allocations as they arrive with no affection on performance
2556 when tracking is switched off (Chromium issue 277984).
2558 Performance and stability improvements on all platforms.
2561 2013-10-14: Version 3.22.11
2563 Performance and stability improvements on all platforms.
2566 2013-10-11: Version 3.22.10
2568 Fixed timezone issues with date-time/parse-* tests.
2569 (Chromium issue 2919)
2571 Added column getter to CpuProfileNode (Chromium issue 302537)
2573 Performance and stability improvements on all platforms.
2576 2013-10-10: Version 3.22.9
2578 Ensure only whitelisted stubs have sse2 versions in the snapshot.
2579 (fix for chromium 304565)
2581 Implement ArrayBuffer.isView.
2583 Performance and stability improvements on all platforms.
2586 2013-10-04: Version 3.22.8
2588 Performance and stability improvements on all platforms.
2591 2013-10-03: Version 3.22.7
2593 Debug: Allow stepping into on a given call frame
2594 (Chromium issue 296963).
2596 Always use timeGetTime() for TimeTicks::Now() on Windows
2597 (Chromium issue 288924).
2599 Performance and stability improvements on all platforms.
2602 2013-10-02: Version 3.22.6
2604 Performance and stability improvements on all platforms.
2607 2013-10-01: Version 3.22.5
2609 Disabled externalization of sliced/cons strings in old pointer space
2610 (Chromium issue 276357).
2612 Turned on handle zapping for release builds
2614 Performance and stability improvements on all platforms.
2617 2013-09-30: Version 3.22.4
2619 Function::Call and Object::CallAsFunction APIs should allow v8::Value as
2620 a receiver (issue 2915).
2622 Removed unnecessary mutex (Chromium issue 291236).
2624 Removed ArrayBufferView::BaseAddress method.
2626 Performance and stability improvements on all platforms.
2629 2013-09-27: Version 3.22.3
2631 Added methods to enable configuration of ResourceConstraints based on
2632 limits derived at runtime.
2633 (Chromium issue 292928)
2635 Added -optimize-for-size flag to optimize for memory size (will be used
2636 by pre-aging CL), and removed the is_memory_constrained
2638 (Chromium issue 292928)
2640 Performance and stability improvements on all platforms.
2643 2013-09-26: Version 3.22.2
2645 Performance and stability improvements on all platforms.
2648 2013-09-25: Version 3.22.1
2650 Sped up creating typed arrays from array-like objects.
2651 (Chromium issue 270507)
2653 Performance and stability improvements on all platforms.
2656 2013-09-23: Version 3.22.0
2658 LiveEdit to mark more closure functions for re-instantiation when scope
2662 Made bounds check elimination iterative instead of recursive.
2663 (Chromium issue 289706)
2665 Turned on i18n support by default.
2667 Set the proper instance-type on HAllocate in BuildFastLiteral.
2668 (Chromium issue 284577)
2670 Performance and stability improvements on all platforms.
2673 2013-09-18: Version 3.21.17
2675 Implemented local load/store elimination on basic blocks.
2677 Added mutex when accessing concurrent recompilation output queue.
2678 (Chromium issue 291236)
2680 Don't lookup the cache for the result of Function::New.
2681 (Chromium issue 272579)
2683 Tweaked HConstant::EmitAtUses() to eliminate useless constant
2685 (Chromium issue 2881)
2687 Performance and stability improvements on all platforms.
2690 2013-09-16: Version 3.21.16
2692 Every place where AllocationMemento is initialized with an
2693 AllocationSite is now checked to be sure a valid Site goes in. This is
2694 temporary code to diagnose chromium bug 284577.
2696 Performance and stability improvements on all platforms.
2699 2013-09-13: Version 3.21.15
2701 Non-JSObject heap objects are now handled using slow-path IC stub
2703 (Chromium issue 280632)
2705 i18n Javascript code added to the snapshot.
2708 Performance and stability improvements on all platforms.
2710 2013-09-12: Version 3.21.14
2712 Added access check for observed objects.
2715 Cleaned up v8::ArrayBuffer::Allocator interface.
2718 Performance and stability improvements on all platforms.
2720 2013-09-11: Version 3.21.13
2722 Added a ResourceConstraint for the embedder to specify that V8 is
2723 running on a memory constrained device.
2724 (Chromium issue 280984)
2726 Removed HandleScope default ctor.
2727 (Chromium issue 236173)
2729 Enabled escape analysis for Hydrogen.
2731 Correctly stringified mixed encoding indirect strings.
2732 (Chromium issue 287476)
2734 Performance and stability improvements on all platforms.
2737 2013-09-09: Version 3.21.12
2739 Fixed bitwise negation on x64.
2740 (Chromium issue 285355)
2742 Dropped GetCurrentThreadId() and TerminateExecution(int) from
2745 Fixed polymorphic INTERCEPTOR StoreICs on ARM/MIPS.
2746 (Chromium issue 284998)
2748 Added check if timeout has expired after processing each sample.
2749 (issue 2814,v8:2871)
2751 Removed obsolete global V8::has_been_fooed flags.
2754 Performance and stability improvements on all platforms.
2757 2013-09-05: Version 3.21.11
2759 Performance and stability improvements on all platforms.
2762 2013-09-04: Version 3.21.10
2764 Fixed Eternal::IsEmpty logic (issue 2870).
2766 Performance and stability improvements on all platforms.
2769 2013-09-03: Version 3.21.9
2771 Deprecated Persistent functions which were marked to be deprecated.
2773 Allowed uncacheable identifiers to go generic (issue 2867).
2775 Performance and stability improvements on all platforms.
2778 2013-09-02: Version 3.21.8
2780 Added scriptId to StackTrace frames (issue 2865).
2782 Performance and stability improvements on all platforms.
2785 2013-08-30: Version 3.21.7
2787 Fixed casts of eternal handles.
2789 Turned on global handle zapping.
2791 Always visit branches during HGraph building (Chromium issue 280333).
2793 Profiler changes: removed deprecated API, support higher sampling
2796 Performance and stability improvements on all platforms.
2799 2013-08-29: Version 3.21.6
2801 Fixed inlined 'throw' statements interfering with live range
2802 computation. (issue 2843)
2804 Performance and stability improvements on all platforms.
2807 2013-08-28: Version 3.21.5
2809 Fixed compilation with recent MinGW64 versions. (issue 2300)
2811 Added RemovePrototype to FunctionTemplate. (Chromium issue 272440)
2813 Performance and stability improvements on all platforms.
2816 2013-08-26: Version 3.21.4
2818 Lowered kInitialMaxFastElementArray constant to 95K (issue 2790).
2820 Use signals for cpu profiling on Mac OS X (issue 2814).
2822 Deprecated CpuProfileNode::GetSelfSamplesCount (Chromium issue 267595).
2824 Added support for higher CPU profiler sampling rate on posix systems
2827 Worked around 'inlining failed' build error with older GCC 4.x releases.
2829 Added source map support to tick processor.
2831 Stability improvements on all platforms.
2834 2013-08-23: Version 3.21.3
2836 Temporarily disabled optimization for StringWrappers to use native
2837 valueOf. (issue 2855)
2839 Fixed crash on function declarations in eval inside non-trivial local
2842 Rewrote SamplingCircularQueue. (issue 2814)
2844 Fixed hidden properties on object with frozen prototype. (issue 2829)
2846 Fix deoptimization bug. (Chromium issue 274164)
2848 Stability improvements on all platforms.
2851 2013-08-22: Version 3.21.2
2853 Stability improvements on all platforms.
2856 2013-08-21: Version 3.21.1
2858 Promoted ArrayBuffer, DataView and typed arrays to non-experimental.
2859 (Chromium issue 270527)
2861 Replaced OS::MemCopy with memcpy in typed array initialization.
2862 (Chromium issue 270642)
2864 Moved i18n break iterator C++ code to runtime (issue 2745)
2866 Fixed invalid out-of-bounds store in MacroAssembler::Allocate.
2867 (Chromium issue 263515)
2869 Fixed register misuse in Allocate() on ARM. (issue 2851)
2871 Fixed empty handle dereference in Runtime_InternalNumberFormat.
2872 (Chromium issue 275467)
2874 Performance and stability improvements on all platforms.
2877 2013-08-19: Version 3.21.0
2879 Fixed GC-related crasher (Chromium issue 274438)
2881 Reverted making Intl non-enumerable.
2883 Performance and stability improvements on all platforms.
2886 2013-08-14: Version 3.20.17
2888 Fixed Math.round/floor that had bogus Smi representation
2889 (Chromium issue 272564)
2891 Performance and stability improvements on all platforms.
2894 2013-08-13: Version 3.20.16
2896 Fixed bug in HPhi::SimplifyConstantInput (Chromium issue 269679)
2898 Fixed gcmole bugs in i18n code (issue 2745)
2900 ia32: Calls to the TranscendentalCacheStub must ensure that esi is
2903 Made sure polymorphic element access creates non-replaying
2906 Allowed HPhis to have an invalid merge index. (issue 2815)
2908 Fixed smi-based math floor. (Chromium issue 270268)
2910 Deprecated self and total time getters and total sample count
2911 getter on CpuProfileNode. (Chromium issue 267595)
2913 Fixed Object.freeze, Object.observe wrt CountOperation and
2914 CompoundAssignment. (issue 2774,2779)
2916 Performance and stability improvements on all platforms.
2919 2013-08-07: Version 3.20.15
2921 Exposed eternal handle api.
2923 Bugfix to solve issues with enabling V8 typed arrays in Blink.
2925 Fixed Array index dehoisting. (Chromium issue 264203)
2927 Updated Array Iterator to use numeric indexes (issue 2818)
2929 Return start/end profiling time in microseconds instead of milliseconds
2932 Performance and stability improvements on all platforms.
2935 2013-08-06: Version 3.20.14
2937 Added new Harmony methods to Array.prototype object.
2938 (issue 2776,v8:2777)
2940 Performance and stability improvements on all platforms.
2943 2013-08-01: Version 3.20.12
2945 Removed buggy ToNumber truncation (partial fix for issue 2813)
2947 Calling Map etc without new should throw TypeError (issue 2819)
2949 Fixed a crash for large code objects on ARM (Chromium issue 2736)
2951 Fixed stale unhandlified value in JSObject::SetPropertyForResult.
2952 (Chromium issue 265894)
2954 Added new Harmony methods to String.prototype object.
2955 (issue 2796,v8:2797,v8:2798,v8:2799)
2957 Performance and stability improvements on all platforms.
2960 2013-07-30: Version 3.20.11
2962 Performance and stability improvements on all platforms.
2965 2013-07-29: Version 3.20.10
2967 Performance and stability improvements on all platforms.
2970 2013-07-26: Version 3.20.9
2972 Check that ExternalString objects get aligned resources.
2974 Fixed JSArray-specific length lookup in polymorphic array handling
2975 (Chromium issues 263276, 263905).
2977 Performance and stability improvements on all platforms.
2980 2013-07-24: Version 3.20.8
2982 Deprecated v8::V8::Pause/ResumeProfiler.
2984 Fixed Chromium issues 247688, 258519 and 260203.
2986 Performance and stability improvements on all platforms.
2989 2013-07-22: Version 3.20.7
2991 Deprecated some debugger methods.
2993 Fixed wrong bailout id in polymorphic stores (Chromium issue 259787).
2995 Fixed data race in SamplingCircularQueue (Chromium issue 251218).
2997 Fixed type feedback in presence of negative lookups
2998 (Chromium issue 252797).
3000 Do not materialize context-allocated values for debug-evaluate
3001 (Chromium issue 259300).
3003 Synchronized Compare-Literal behavior in FullCodegen and Hydrogen
3004 (Chromium issue 260345).
3006 Performance and stability improvements on all platforms.
3009 2013-07-17: Version 3.20.6
3011 Try to remove invalidated stubs before falling back to checking the
3012 constant state (Chromium issue 260585).
3014 Fixed gyp_v8 to work with use_system_icu=1 (issue 2475).
3016 Fixed sloppy-mode 'const' under Harmony flag (Chromium issue 173361).
3018 Use internal array as API function cache (Chromium issue 260106).
3020 Fixed possible stack overflow in range analysis
3021 (Chromium issue 259452).
3023 Performance and stability improvements on all platforms.
3026 2013-07-15: Version 3.20.5
3028 Ensured that the length of frozen arrays is immutable
3029 (issue 2711, Chromium issue 259548).
3031 Performance and stability improvements on all platforms.
3034 2013-07-10: Version 3.20.4
3036 Fixed garbage-collection issue that causes a crash on ARM
3037 (Chromium issue 254570)
3039 Performance and stability improvements on all platforms.
3042 2013-07-08: Version 3.20.3
3044 Performance and stability improvements on all platforms.
3047 2013-07-05: Version 3.20.2
3049 Remove deprecated heap profiler methods from V8 public API
3051 Mark i18n functions as native and set proper names
3054 Correctly report stack trace when current function is FunctionApply
3055 builtin (Chromium issue 252097)
3057 Enable GDBJIT interface for standalone by default.
3059 Fix debuggersupport=off build. (issue 2754)
3061 Introduce -m64 flag for making x64 when the default gcc compiler is for
3064 Performance and stability improvements on all platforms.
3067 2013-07-02: Version 3.20.1
3069 Implemented WeakMap.prototype.clear function. (issue 2753)
3071 Ensure CheckInitialized is present independent of define.
3072 (Chromium issue 255779)
3074 Performance and stability improvements on all platforms.
3077 2013-06-28: Version 3.20.0
3079 Migrated several tests from blink to V8 repository.
3081 Allowed users of the V8 API to distinguish between unset and undefined
3082 HiddenValues (issue 2746).
3084 Deprecated old style callbacks in the V8 API.
3086 Turned on parallel recompilation.
3088 Performance and stability improvements on all platforms.
3091 2013-06-18: Version 3.19.18
3093 Fixed read-only attribute of Function.length in strict mode.
3096 Fixed Runtime_SetProperty to properly handle OOM failures
3097 (Chromium issue 249873)
3099 Emit deprecated check for constant function transitions.
3100 (Chromium issue 250609)
3102 Made MathFloorOfDiv optimization trigger more often
3105 Make more GCs in idle notification handler.
3106 (Chromium issue 241815)
3108 Increased default type info threshold.
3111 Performance and stability improvements on all platforms.
3114 2013-06-14: Version 3.19.16
3116 Performance and stability improvements on all platforms.
3119 2013-06-13: Version 3.19.15
3121 Performance and stability improvements on all platforms.
3124 2013-06-13: Version 3.19.14
3126 Fixed crashes when calling new Array(a) with a single argument that
3127 could result in creating a holey array with a packed elements kind.
3128 (Chromium issue 245480)
3130 Fixed issues in parallel compilation.
3131 (Chromium issue 248076)
3133 Performance and stability improvements on all platforms.
3136 2013-06-11: Version 3.19.13
3138 Performance and stability improvements on all platforms.
3141 2013-06-10: Version 3.19.12
3143 Fixed arguments array access. (Chromium issue 247303)
3145 Fixed bug in LookupForWrite. (Chromium issue 242332)
3147 Performance and stability improvements on all platforms.
3150 2013-06-07: Version 3.19.11
3152 Performance and stability improvements on all platforms.
3155 2013-06-06: Version 3.19.10
3157 Performance and stability improvements on all platforms.
3160 2013-06-05: Version 3.19.9
3162 Implemented Load IC support for loading properties from primitive
3163 values to avoid perpetual soft deopts. (Chromium issue 242512)
3165 Implemented Freeing of PerThreadAssertData when possible to avoid
3166 memory leak. (Chromium issue 246567)
3168 Removed V8_USE_OLD_STYLE_PERSISTENT_HANDLE_VISITORS.
3170 Performance and stability improvements on all platforms.
3173 2013-06-03: Version 3.19.8
3175 Fixed bug with inlining 'Array' function. (Chromium issue 244461)
3177 Fixed initialization of literal objects. (Chromium issue 245424)
3179 Fixed function name inferred inside closures. (Chromium issue 224884)
3181 Performance and stability improvements on all platforms.
3184 2013-05-31: Version 3.19.7
3186 Added support for //# sourceURL similar to deprecated //@ sourceURL one.
3189 Made sure IfBuilder::Return clears the current block.
3190 (Chromium issue 243868)
3192 Fixed two CPU profiler tests on ARM and MIPS simulators
3195 Fixed idle incremental GC for large objects.
3196 (Chromium issue 241815)
3198 Disabled --optimize-constructed-arrays due to crashes
3199 (Chromium issue 244461)
3201 Performance and stability improvements on all platforms.
3204 2013-05-28: Version 3.19.6
3206 Fixed IfBuilder::Deopt to clear the current block
3207 (Chromium issue 243868).
3209 Performance and stability improvements on all platforms.
3212 2013-05-27: Version 3.19.5
3214 Reset regexp parser flag after scanning ahead for capture groups.
3217 Removed flakiness in test-cpu-profiler/SampleWhenFrameIsNotSetup.
3220 Performance and stability improvements on all platforms.
3223 2013-05-24: Version 3.19.4
3225 Fixed edge case in stack trace formatting. (Chromium issue 237617)
3227 Fixed embedded new-space pointer in LCmpObjectEqAndBranch. (Chromium
3230 Made Object.freeze fast (issue 1858, Chromium issue 115960)
3232 Fixed bogus deopt in BuildEmitDeepCopy for holey arrays. (Chromium issue
3235 Performance and stability improvements on all platforms.
3238 2013-05-22: Version 3.19.3
3240 Performance and stability improvements on all platforms.
3243 2013-05-17: Version 3.19.2
3245 Fill in one-word-fillers for the unused property fields
3246 (Chromium issue 240056).
3248 Removed use_system_v8 logic from the mainline gyp file
3249 (Chromium issue 226860).
3251 Skip CPU profiler samples where top function's stack frame is not
3252 set up properly (issue 2628).
3254 Performance and stability improvements on all platforms.
3257 2013-05-14: Version 3.19.1
3259 Fixed missing hole check for loads from Smi arrays when all uses are
3260 changes (Chromium issue 233737)
3262 Performance and stability improvements on all platforms.
3265 2013-05-10: Version 3.19.0
3267 Deprecated Context::New which returns Persistent.
3269 Added Persistent<T>::Reset which disposes the handle and redirects it to
3270 point to another object.
3272 Deprecated WriteAscii and MayContainNonAscii.
3274 Exposed AssertNoAllocation to API.
3276 Performance and stability improvements on all platforms.
3279 2013-04-30: Version 3.18.5
3281 Allowed setting debugger breakpoints on CompareNilICs (issue 2660)
3283 Fixed beyond-heap load on x64 Crankshafted StringCharFromCode
3284 (Chromium issue 235311)
3286 Change 'Parse error' to three more informative messages.
3287 (Chromium issue 2636)
3289 Performance and stability improvements on all platforms.
3292 2013-04-26: Version 3.18.4
3294 Added a preliminary API for ES6 ArrayBuffers
3296 Replaced qsort with std::sort. (Chromium issue 2639)
3298 Performance and stability improvements on all platforms.
3301 2013-04-24: Version 3.18.3
3303 Exposed the GC under a name that is less collision prone than window.gc.
3306 Do not emit double values at their use sites. (Chromium issue 234101)
3308 Added methods to allow resuming execution after calling
3309 TerminateExecution(). (issue 2361)
3311 Performance and stability improvements on all platforms.
3314 2013-04-22: Version 3.18.2
3316 OS::MemMove/OS::MemCopy: Don't call through to generated code when size
3317 == 0 to avoid prefetching invalid memory (Chromium issue 233500)
3319 Removed heap snapshot size limit. (Chromium issue 232305)
3321 Performance and stability improvements on all platforms.
3324 2013-04-18: Version 3.18.1
3326 Removed SCons related files and deprecated test suite configurations.
3328 Improved handling of unary plus (issue 2527).
3330 Performance and stability improvements on all platforms.
3333 2013-04-17: Version 3.18.0
3335 Enabled pretenuring of fast literals in high promotion mode.
3337 Removed preparser library; link preparser executable against full V8.
3339 Fixed set-up of intrinsic's 'constructor' properties.
3340 (Chromium issue 229445)
3342 ES6 symbols: extended V8 API to support symbols (issue 2158).
3344 Removed ARM support for VFP2.
3346 Made __proto__ a real JavaScript accessor property.
3347 (issue 1949 and issue 2606)
3349 Performance and stability improvements on all platforms.
3352 2013-04-04: Version 3.17.16
3354 Stack trace API: poison stack frames below the first strict mode frame.
3357 Made Isolate::GetHeapStatistics robust against half-initialized
3358 isolates (Chromium issue 2591).
3360 Finished implementation of ES6 symbols aka. private names (issue 2158).
3362 Performance and stability improvements on all platforms.
3365 2013-03-21: Version 3.17.15
3367 Rolled back API changes to maintain compatibility with older
3368 3.17.x versions of V8.
3370 Disable zapping of global handles in release mode.
3372 Always mark the entire valid prefix of the descriptor array.
3373 (Chromium issue 196331)
3375 Use internal memcpy for CopyWords and when copying code.
3376 (Chromium issue 196330)
3378 Performance and stability improvements on all platforms.
3381 2013-03-20: Version 3.17.14
3383 Use internal memcpy when initializing code objects.
3384 (Chromium issue 196330)
3386 Disabled weak embedded maps because of crashes.
3387 (Chromium issues 172489, 217858)
3389 Performance and stability improvements on all platforms.
3392 2013-03-19: Version 3.17.13
3394 Turned Flags into a uint32_t typedef (Chromium issue 194749).
3396 Performance and stability improvements on all platforms.
3399 2013-03-18: Version 3.17.12
3401 Unified kMaxArguments with number of bits used to encode it.
3402 (Chromium issue 211741)
3404 Fixed detection of |handle_smi| case in
3405 HOptimizedGraphBuilder::HandlePolymorphicCallNamed.
3406 (Chromium issue 196583)
3408 Performance and stability improvements on all platforms.
3411 2013-03-15: Version 3.17.11
3413 Added a version of the v8::HandleScope constructor with an v8::Isolate
3414 parameter and made AdjustAmountOfExternalAllocatedMemory an instance
3415 method of v8::Isolate.
3418 Fixed two register allocator bugs (off-by-one error/failure
3419 propagation). (issue 2576)
3421 Fixed huge heap snapshot when a heavily shared context has many
3422 variables. (Chromium issue 145687)
3424 Performance and stability improvements on all platforms.
3427 2013-03-13: Version 3.17.10
3429 Fixed heap snapshot creation for Harmony collections. (issue 2535)
3431 Fixed register allocation corner case. (Chromium issue 177883)
3433 Performance and stability improvements on all platforms.
3436 2013-03-08: Version 3.17.9
3438 Restored Function()'s expected string representation. (issue 2470)
3440 Enabled deprecatations (again). (issue 2487)
3442 Avoid bool to Oddball conversions by being lazy. (issue 2491)
3444 Added %p option to --logfile.
3446 Hardened Function()'s parsing of function literals. (issue 2470)
3448 ES6 symbols: Refine test for getOwnPropertyNames. (issue 2158)
3450 Performance and stability improvements on all platforms.
3453 2013-03-07: Version 3.17.8
3455 Added missing license headers. (Chromium issue 98597)
3457 Inserted missing type cast in JSON.stringify. (issue 2570)
3459 Reverted "Send SIGPROF signals on the profiler event processor thread"
3462 Fixed Array.length, String.length and Function.prototype LoadICs on x64.
3465 ES6 symbols: filter symbols form for-in loops and Object.keys.
3468 Properly handle misses for StoreArrayLengthStub on ia32 and x64
3471 Fixed x32 handling of Atomic64. (Chromium issue chromium-os:36866)
3473 Removed "library" variable from standalone.gypi. (Chromium issue 111541)
3475 Fixed HCheckSmiOrInt <-> HBoundsCheck interaction wrt. representations.
3478 Enabled zapping of disposed global handles in release mode.
3479 (Chromium issue 176056)
3481 Added workaround for redefinition of __proto__ property. (issue 2565)
3483 ES6 symbols: Allow symbols as property names. (issue 2158)
3485 Performance and stability improvements on all platforms.
3488 2013-03-04: Version 3.17.7
3490 Limited recursion in regexp compilation by a budget.
3491 (Chromium issue 178790)
3493 ES6 symbols: Implemented Symbol intrinsic and basic functionality
3496 Performance and stability improvements on all platforms.
3499 2013-02-28: Version 3.17.6
3501 Fixed materialization of arguments objects with unknown values.
3502 (Chromium issue 163530)
3504 Set default number of sweeper threads to at most four.
3506 Performance and stability improvements on all platforms.
3509 2013-02-27: Version 3.17.5
3511 Made __proto__ a foreign callback on Object.prototype.
3512 (issue 621, issue 1949 and issue 2441)
3514 Performance and stability improvements on all platforms.
3517 2013-02-25: Version 3.17.4
3519 Performance and stability improvements on all platforms.
3522 2013-02-21: Version 3.17.3
3524 Performance and stability improvements on all platforms.
3527 2013-02-19: Version 3.17.2
3529 Removed bogus check for TOP register in deoptimizer.
3530 (Chromium issue 176943)
3532 Made the Isolate parameter mandatory for internal HandleScopes.
3535 Fixed f.apply() optimization when declared arguments are mutated.
3538 Performance and stability improvements on all platforms.
3541 2013-02-14: Version 3.17.1
3543 Performance and stability improvements on all platforms.
3546 2013-02-13: Version 3.17.0
3548 Enabled parallel sweeping.
3550 Don't try to unlink instructions twice during GVN
3551 (Chromium issue 175141)
3553 Fixed code flusher disabling while marking incrementally.
3554 (Chromium issue 173458, 168582)
3556 Don't use TLS for space iterators.
3559 Added new GetHeapStatistics API entry and deprecated old one.
3561 Fixed DoubleStackSlot-to-DoubleStackSlot moves on ia32. Unified
3562 platform-independent code.
3563 (Chromium issue 173907)
3565 Added --trace-array-abuse to help find OOB accesses.
3567 Performance and stability improvements on all platforms.
3570 2013-02-06: Version 3.16.14
3572 Performance and stability improvements on all platforms.
3575 2013-02-04: Version 3.16.13
3577 Tagged stubs that rely on instance types as MEGAMORPHIC.
3578 (Chromium issue 173974)
3580 Fixed clearing of dead dependent codes and verifing of weak
3581 embedded maps on full GC. (Chromium issue 172488,172489)
3583 Made the arm port build cleanly with Clang.
3585 Performance and stability improvements on all platforms.
3588 2013-01-31: Version 3.16.12
3590 Performance and stability improvements on all platforms.
3593 2013-01-30: Version 3.16.11
3595 Put making embedded maps in optimized code weak behind a flag.
3596 (Chromium issue 172488,172489)
3598 Performance and stability improvements on all platforms.
3601 2013-01-25: Version 3.16.10
3603 Avoid excessive memory usage during redundant phi elimination.
3606 Fixed additional spec violations wrt RegExp.lastIndex.
3609 Added Isolate parameter to Persistent class.
3612 Performance and stability improvements on all platforms.
3615 2013-01-24: Version 3.16.9
3617 Made embedded maps in optimized code weak.
3620 Fixed corner case when JSFunction is evicted from flusher.
3621 (Chromium issue 168801)
3623 Correctly set kCanBeDivByZero flag for HMathFloorOfDiv.
3624 (Chromium issue 171641)
3626 Performance and stability improvements on all platforms.
3629 2013-01-23: Version 3.16.8
3631 Correctly reset lastIndex in an RegExp object.
3632 (Chromium issue 170856)
3634 Added a workaround for Windows compilation problems related to V8EXPORT.
3637 tools/run-tests.py: shlex.split() the value of --command-prefix
3638 (Chromium issue 171553)
3640 Fixed pattern detection for replacing shifts by rotation.
3641 (Chromium issue 2499)
3643 Performance and stability improvements on all platforms.
3646 2013-01-21: Version 3.16.7
3648 Removed <(library) usage from v8.gyp.
3649 (Chromium issue 111541)
3651 Fixed out of bounds memory access in TestJSArrayForAllocationSiteInfo.
3652 (Chromium issue 169928)
3654 Performance and stability improvements on all platforms.
3657 2013-01-18: Version 3.16.6
3659 Made the Isolate parameter mandatory in Locker and Unlocker classes.
3662 Avoid pointer underflow in CopyCharsUnsigned.
3665 Generate shim headers when using system v8.
3666 (Chromium issue 165264)
3668 Fixed arguments materialization for inlined apply().
3671 Sync'ed laziness between BuildFunctionInfo and MakeFunctionInfo.
3672 (Chromium issue 147497)
3674 Added sanity check to CodeFlusher::AddCandidate.
3675 (Chromium issue 169209)
3677 Performance and stability improvements on all platforms.
3680 2013-01-15: Version 3.16.5
3682 Removed deprecated functions from V8's external API.
3684 Prepared API for WebKit use of Latin-1.
3686 Fixed V8 issue 2486.
3688 Fixed Chromium issue 169723.
3690 Performance and stability improvements on all platforms.
3693 2013-01-11: Version 3.16.4
3695 Fixed Chromium issues 168545 and 169209.
3697 Performance and stability improvements on all platforms.
3700 2013-01-09: Version 3.16.3
3702 Improved GC performance when moving parts of a FixedArray (issue 2452).
3704 Enabled readline on d8 while building a shared lib (issue 1781).
3706 Fixed missing exception check in typed array constructor
3707 (Chromium issue 168545).
3709 Check for read-only-ness when preparing for array sort (issue 2419).
3711 Performance and stability improvements on all platforms.
3714 2013-01-04: Version 3.16.2
3716 Added Makefile options to build for the Raspberry Pi (armv7=0,
3719 Performance and stability improvements on all platforms.
3722 2012-12-27: Version 3.16.1
3724 Fixed x64 MathMinMax for negative untagged int32 arguments.
3725 (Chromium issue 164442)
3727 Fixed FloatingPointHelper::CheckSSE2OperandIsInt32.
3730 Performance and stability improvements on all platforms.
3733 2012-12-21: Version 3.16.0
3735 V8_Fatal now prints C++ stack trace in debug mode.
3737 Added HTML-based tick processor.
3739 Continued implementation of Object.observe (V8 issue 2409).
3741 Fixed V8 issues 2243, 2340, 2393, 2399, 2457.
3743 Fixed Chromium issues 125308, 165637, 166379, 166553.
3745 Performance and stability improvements on all platforms.
3748 2012-12-10: Version 3.15.11
3750 Define CAN_USE_VFP2/3_INSTRUCTIONS based on arm_neon and arm_fpu GYP
3753 Performance and stability improvements on all platforms.
3756 2012-12-07: Version 3.15.10
3758 Enabled optimisation of functions inside eval. (issue 2315)
3760 Fixed spec violations in methods of Number.prototype. (issue 2443)
3762 Added GCTracer metrics for a scavenger GC for DOM wrappers.
3764 Performance and stability improvements on all platforms.
3767 2012-12-06: Version 3.15.9
3769 Fixed candidate eviction in code flusher.
3770 (Chromium issue 159140)
3772 Iterate through all arguments for side effects in Math.min/max.
3775 Fixed spec violations related to regexp.lastIndex
3776 (issue 2437, issue 2438)
3778 Performance and stability improvements on all platforms.
3781 2012-12-04: Version 3.15.8
3783 Enforced stack allocation of TryCatch blocks.
3784 (issue 2166,chromium:152389)
3786 Fixed external exceptions in external try-catch handlers.
3789 Activated incremental code flushing by default.
3791 Performance and stability improvements on all platforms.
3794 2012-11-30: Version 3.15.7
3796 Activated code aging by default.
3798 Included more information in --prof log.
3800 Removed eager sweeping for lazy swept spaces. Try to find in
3801 SlowAllocateRaw a bounded number of times a big enough memory slot.
3804 Performance and stability improvements on all platforms.
3807 2012-11-26: Version 3.15.6
3809 Ensure double arrays are filled with holes when extended from
3810 variations of empty arrays. (Chromium issue 162085)
3812 Performance and stability improvements on all platforms.
3815 2012-11-23: Version 3.15.5
3817 Fixed JSON.stringify for objects with interceptor handlers.
3818 (Chromium issue 161028)
3820 Fixed corner case in x64 compare stubs. (issue 2416)
3822 Performance and stability improvements on all platforms.
3825 2012-11-16: Version 3.15.4
3827 Fixed Array.prototype.join evaluation order. (issue 2263)
3829 Perform CPU sampling by CPU sampling thread only iff processing thread
3830 is not running. (issue 2364)
3832 When using an Object as a set in Object.getOwnPropertyNames, null out
3833 the proto. (issue 2410)
3835 Disabled EXTRA_CHECKS in Release build.
3837 Heap explorer: Show representation of strings.
3839 Removed 'type' and 'arguments' properties from Error object.
3842 Added atomics implementation for ThreadSanitizer v2.
3843 (Chromium issue 128314)
3845 Fixed LiveEdit crashes when object/array literal is added. (issue 2368)
3847 Performance and stability improvements on all platforms.
3850 2012-11-13: Version 3.15.3
3852 Changed sample shell to send non-JS output (e.g. errors) to stderr
3855 Correctly check for stack overflow even when interrupt is pending.
3858 Collect stack trace on stack overflow. (issue 2394)
3860 Performance and stability improvements on all platforms.
3863 2012-11-12: Version 3.15.2
3865 Function::GetScriptOrigin supplies sourceURL when script name is
3866 not available. (Chromium issue 159413)
3868 Made formatting error message side-effect-free. (issue 2398)
3870 Fixed length check in JSON.stringify. (Chromium issue 160010)
3872 ES6: Added support for Set and Map clear method (issue 2400)
3874 Fixed slack tracking when instance prototype changes.
3875 (Chromium issue 157019)
3877 Fixed disabling of code flusher while marking. (Chromium issue 159140)
3879 Added a test case for object grouping in a scavenger GC (issue 2077)
3881 Support shared library build of Android for v8.
3882 (Chromium issue 158821)
3884 ES6: Added support for size to Set and Map (issue 2395)
3886 Performance and stability improvements on all platforms.
3889 2012-11-06: Version 3.15.1
3891 Put incremental code flushing behind a flag. (Chromium issue 159140)
3893 Performance and stability improvements on all platforms.
3896 2012-10-31: Version 3.15.0
3898 Loosened aligned code target requirement on ARM (issue 2380)
3900 Fixed JSON.parse to treat leading zeros correctly.
3901 (Chromium issue 158185)
3903 Performance and stability improvements on all platforms.
3906 2012-10-22: Version 3.14.5
3908 Killed off the SCons based build.
3910 Added a faster API for creating v8::Integer objects.
3912 Speeded up function deoptimization by avoiding quadratic pass over
3913 optimized function list. (Chromium issue 155270)
3915 Always invoke the default Array.sort functions from builtin functions.
3918 Reverted recent CPU profiler changes because they broke --prof.
3921 Switched code flushing to use different JSFunction field.
3924 Performance and stability improvements on all platforms.
3927 2012-10-15: Version 3.14.4
3929 Allow evals for debugger even if they are prohibited in the debugee
3930 context. (Chromium issue 154733)
3932 Enabled --verify-heap in release mode (issue 2120)
3934 Performance and stability improvements on all platforms.
3937 2012-10-11: Version 3.14.3
3939 Use native context to retrieve ErrorMessageForCodeGenerationFromStrings
3940 (Chromium issue 155076).
3942 Bumped variable limit further to 2^17 (Chromium issue 151625).
3944 Performance and stability improvements on all platforms.
3947 2012-10-10: Version 3.14.2
3949 ARM: allowed VFP3 instructions when hardfloat is enabled.
3950 (Chromium issue 152506)
3952 Fixed instance_descriptors() and PushStackTraceAndDie regressions.
3953 (Chromium issue 151749)
3955 Made GDBJIT interface compile again. (issue 1804)
3957 Fixed Accessors::FunctionGetPrototype's proto chain traversal.
3958 (Chromium issue 143967)
3960 Made sure that names of temporaries do not clash with real variables.
3963 Rejected local module declarations. (Chromium issue 150628)
3965 Rejected uses of lexical for-loop variable on the RHS. (issue 2322)
3967 Fixed slot recording of code target patches.
3968 (Chromium issue 152615,chromium:144230)
3970 Changed the Android makefile to use GCC 4.6 instead of GCC 4.4.3.
3972 Performance and stability improvements on all platforms.
3975 2012-10-01: Version 3.14.1
3977 Don't set -m32 flag when compiling with Android ARM compiler.
3978 (Chromium issue 143889)
3980 Restore the descriptor array before returning allocation failure.
3981 (Chromium issue 151750)
3983 Lowered kMaxVirtualRegisters (v8 issue 2139, Chromium issues 123822 and
3986 Pull more recent gyp in 'make dependencies'.
3988 Made sure that the generic KeyedStoreIC changes length and element_kind
3989 atomically (issue 2346).
3991 Bumped number of allowed variables per scope to 65535, to address GWT.
3992 (Chromium issue 151625)
3994 Support sourceURL for dynamically inserted scripts (issue 2342).
3996 Performance and stability improvements on all platforms.
3999 2012-09-20: Version 3.14.0
4001 Fixed missing slot recording during clearing of CallICs.
4002 (Chromium issue 144230)
4004 Fixed LBoundsCheck on x64 to handle (stack slot + constant) correctly.
4005 (Chromium issue 150729)
4007 Fixed minus zero test. (Issue 2133)
4009 Fixed setting array length to zero for slow elements.
4010 (Chromium issue 146910)
4012 Fixed lost arguments dropping in HLeaveInlined.
4013 (Chromium issue 150545)
4015 Fixed casting error for receiver of interceptors.
4016 (Chromium issue 149912)
4018 Throw a more descriptive exception when blocking 'eval' via CSP.
4019 (Chromium issue 140191)
4021 Fixed debugger's eval when close to stack overflow. (issue 2318)
4023 Added checks to live edit. (issue 2297)
4025 Switched on code compaction on incremental GCs.
4027 Fixed caching of optimized code for OSR. (issue 2326)
4029 Not mask exception thrown by toString in String::UtfValue etc.
4032 Fixed API check for length of external arrays. (Chromium issue 148896)
4034 Ensure correct enumeration indices in the dict (Chromium issue 148376)
4036 Correctly initialize regexp global cache. (Chromium issue 148378)
4038 Fixed arguments object materialization during deopt. (issue 2261)
4040 Introduced new API to expose external string resource regardless of
4043 Fixed CHECK failure in LCodeGen::DoWrapReceiver when
4044 --deopt-every-n-times flag is present
4045 (Chromium issue 148389)
4047 Fixed edge case of extension with NULL as source string.
4048 (Chromium issue 144649)
4050 Fixed array index dehoisting. (Chromium issue 141395)
4052 Performance and stability improvements on all platforms.
4055 2012-09-11: Version 3.13.7
4057 Enable/disable LiveEdit using the (C++) debug API.
4059 Performance and stability improvements on all platforms.
4062 2012-09-06: Version 3.13.6
4064 Added validity checking to API functions and calls.
4066 Disabled accessor inlining (Chromium issue 134609).
4068 Fixed bug in Math.min/max in optimized code (Chromium issue 145961).
4070 Directly use %ObjectKeys in json stringify (Chromium issue 2312).
4072 Fixed VS2005 build (issue 2313).
4074 Activated fixed ES5 readonly semantics by default.
4076 Added hardfp flag to the Makefile.
4078 Performance and stability improvements on all platforms.
4081 2012-08-29: Version 3.13.5
4083 Release stack trace data after firing Error.stack accessor.
4086 Added a new API V8::SetJitCodeEventHandler to push code name and
4087 location to users such as profilers.
4089 Allocate block-scoped global bindings to global context.
4091 Performance and stability improvements on all platforms.
4094 2012-08-28: Version 3.13.4
4096 Print reason for disabling optimization. Kill --trace-bailout flag.
4098 Provided option to disable full DEBUG build on Android.
4100 Introduced global contexts to represent lexical global scope(s).
4102 Fixed rounding in Uint8ClampedArray setter. (issue 2294)
4104 Performance and stability improvements on all platforms.
4107 2012-08-21: Version 3.13.3
4109 Performance and stability improvements on all platforms.
4112 2012-08-20: Version 3.13.2
4114 Performance and stability improvements on all platforms.
4117 2012-08-16: Version 3.13.1
4119 Performance and stability improvements on all platforms.
4122 2012-08-10: Version 3.13.0
4124 Added histograms for total allocated/live heap size, as well as
4125 allocated size and percentage of total for map and cell space.
4127 Fixed parseInt's octal parsing behavior (ECMA-262 Annex E 15.1.2.2).
4130 Added checks for interceptors to negative lookup code in Crankshaft.
4131 (Chromium issue 140473)
4133 Made incremental marking clear ICs and type feedback cells.
4135 Performance and stability improvements on all platforms.
4138 2012-08-01: Version 3.12.19
4140 Performance and stability improvements on all platforms.
4143 2012-07-30: Version 3.12.18
4145 Forced using bit-pattern for signed zero double. (issue 2239)
4147 Made sure double to int conversion is correct. (issue 2260)
4149 Performance and stability improvements on all platforms.
4152 2012-07-27: Version 3.12.17
4154 Always set the callee's context when calling a function from optimized
4156 (Chromium issue 138887)
4158 Fixed building with GCC 3.x
4161 Improved API calls that return empty handles.
4164 Performance and stability improvements on all platforms.
4167 2012-07-25: Version 3.12.16
4169 Performance and stability improvements on all platforms.
4172 2012-07-24: Version 3.12.15
4174 Added PRESERVE_ASCII_NULL option to String::WriteAscii.
4177 Added dependency to HLoadKeyed* instructions to prevent invalid
4178 hoisting. (Chromium issue 137768)
4180 Enabled building d8 for Android on Mac.
4182 Interpret negative hexadecimal literals as NaN.
4185 Expose counters in javascript when using --track-gc-object-stats.
4187 Enabled building and testing V8 on Android IA.
4189 Added --trace-parse flag to parser.
4191 Performance and stability improvements on all platforms.
4194 2012-07-18: Version 3.12.14
4196 Deactivated optimization of packed arrays.
4197 (Chromium issue 137768)
4199 Fixed broken accessor transition.
4200 (Chromium issue 137689)
4202 Performance and stability improvements on all platforms.
4205 2012-07-17: Version 3.12.13
4207 Fixed missing tagging of stack value in finally block.
4208 (Chromium issue 137496)
4210 Added more support for heap analysis.
4212 Performance and stability improvements on all platforms.
4215 2012-07-16: Version 3.12.12
4217 Added an option to the tickprocessor to specify the directory for lib
4220 Fixed ICs for slow objects with native accessor (Chromium issue 137002).
4222 Fixed transcendental cache on ARM in optimized code (issue 2234).
4224 New heap inspection tools: counters for object sizes and counts,
4225 histograms for external fragmentation.
4227 Incorporated constness into inferred interfaces (in preparation for
4228 handling imports) (issue 1569).
4230 Performance and stability improvements on all platforms.
4233 2012-07-12: Version 3.12.11
4235 Renamed "mips" arch to "mipsel" in the GYP build.
4237 Fixed computation of call targets on prototypes in Crankshaft.
4238 (Chromium issue 125148)
4240 Removed use of __lookupGetter__ when generating stack trace.
4243 Turned on ES 5.2 globals semantics by default.
4244 (issue 1991, Chromium issue 80591)
4246 Synced preparser and parser wrt syntax error in switch..case.
4249 Fixed reporting of octal literals in strict mode when preparsing.
4252 Fixed inline constructors for Harmony Proxy prototypes.
4255 Performance and stability improvements on all platforms.
4258 2012-07-10: Version 3.12.10
4260 Re-enabled and fixed issue with array bounds check elimination
4261 (Chromium issue 132114).
4263 Fixed Debug::Break crash. (Chromium issue 131642)
4265 Added optimizing compiler support for JavaScript getters.
4267 Performance and stability improvements on all platforms.
4270 2012-07-06: Version 3.12.9
4272 Correctly advance the scanner when scanning unicode regexp flag.
4273 (Chromium issue 136084)
4275 Fixed unhandlified code calling Harmony Proxy traps.
4278 Performance and stability improvements on all platforms.
4281 2012-07-05: Version 3.12.8
4283 Implemented TypedArray.set and ArrayBuffer.slice in d8.
4285 Performance and stability improvements on all platforms.
4288 2012-07-03: Version 3.12.7
4290 Fixed lazy compilation for strict eval scopes.
4291 (Chromium issue 135066)
4293 Made MACOSX_DEPLOYMENT_TARGET configurable in GYP.
4296 Report "hidden properties" in heap profiler for properties case.
4299 Activated optimization of packed arrays by default.
4301 Performance and stability improvements on all platforms.
4304 2012-06-29: Version 3.12.6
4306 Cleaned up hardfp ABI detection for ARM (V8 issue 2140).
4308 Extended TypedArray support in d8.
4311 2012-06-28: Version 3.12.5
4313 Fixed lazy parsing heuristics to respect outer scope.
4314 (Chromium issue 135008)
4316 Allow using test-wrapper-gypbuild.py on Windows when no python
4317 interpreter is registered.
4319 Performance and stability improvements on all platforms.
4322 2012-06-27: Version 3.12.4
4324 Removed -fomit-frame-pointer flag from Release builds to make
4325 the stack walkable by TCMalloc (Chromium issue 133723).
4327 Ported r7868 (constant masking) to x64 (issue 1374).
4329 Expose more detailed memory statistics (issue 2201).
4331 Fixed Harmony Maps and WeakMaps for undefined values
4332 (Chromium issue 132744).
4334 Correctly throw reference error in strict mode with ICs disabled
4337 Performance and stability improvements on all platforms.
4340 2012-06-25: Version 3.12.3
4342 Reverted r11835 'Unify promotion and allocation limit computation' due
4343 to V8 Splay performance regression on Mac. (Chromium issue 134183)
4345 Fixed sharing of literal boilerplates for optimized code. (issue 2193)
4347 Performance and stability improvements on all platforms.
4350 2012-06-22: Version 3.12.2
4352 Made near-jump check more strict in LoadNamedFieldPolymorphic on
4353 ia32/x64. (Chromium issue 134055)
4355 Fixed lazy sweeping heuristics to prevent old-space expansion.
4358 Performance and stability improvements on all platforms.
4361 2012-06-21: Version 3.12.1
4363 Performance and stability improvements on all platforms.
4366 2012-06-20: Version 3.12.0
4368 Fixed Chromium issues:
4369 115100, 129628, 131994, 132727, 132741, 132742, 133211
4372 915, 1914, 2034, 2087, 2094, 2134, 2156, 2166, 2172, 2177, 2179, 2185
4374 Added --extra-code flag to mksnapshot to load JS code into the VM
4375 before creating the snapshot.
4377 Support 'restart call frame' command in the debugger.
4379 Performance and stability improvements on all platforms.
4382 2012-06-13: Version 3.11.10
4384 Implemented heap profiler memory usage reporting.
4386 Preserved error message during finally block in try..finally.
4387 (Chromium issue 129171)
4389 Fixed EnsureCanContainElements to properly handle double values.
4392 Improved heuristics to keep objects in fast mode with inherited
4395 Performance and stability improvements on all platforms.
4398 2012-06-06: Version 3.11.9
4400 Implemented ES5-conformant semantics for inherited setters and read-only
4401 properties. Currently behind --es5_readonly flag, because it breaks
4404 Exposed last seen heap object id via v8 public api.
4406 Performance and stability improvements on all platforms.
4409 2012-05-31: Version 3.11.8
4411 Avoid overdeep recursion in regexp where a guarded expression with a
4412 minimum repetition count is inside another quantifier.
4413 (Chromium issue 129926)
4415 Fixed missing write barrier in store field stub.
4416 (issues 2143, 1465, Chromium issue 129355)
4418 Proxies: Fixed receiver for setters inherited from proxies.
4419 Proxies: Fixed ToStringArray function so that it does not reject some
4423 Performance and stability improvements on all platforms.
4426 2012-05-29: Version 3.11.7
4428 Get better function names in stack traces.
4430 Performance and stability improvements on all platforms.
4433 2012-05-24: Version 3.11.6
4435 Fixed RegExp.prototype.toString for incompatible receivers
4438 Performance and stability improvements on all platforms.
4441 2012-05-23: Version 3.11.5
4443 Performance and stability improvements on all platforms.
4446 2012-05-22: Version 3.11.4
4448 Some cleanup to common.gypi. This fixes some host/target combinations
4449 that weren't working in the Make build on Mac.
4451 Handle EINTR in socket functions and continue incomplete sends.
4454 Fixed python deprecations. (issue 1391)
4456 Made socket send and receive more robust and return 0 on failure.
4457 (Chromium issue 15719)
4459 Fixed GCC 4.7 (C++11) compilation. (issue 2136)
4461 Set '-m32' option for host and target platforms
4463 Performance and stability improvements on all platforms.
4466 2012-05-18: Version 3.11.3
4468 Disable optimization for functions that have scopes that cannot be
4469 reconstructed from the context chain. (issue 2071)
4471 Define V8_EXPORT to nothing for clients of v8. (Chromium issue 90078)
4473 Correctly check for native error objects. (Chromium issue 2138)
4475 Performance and stability improvements on all platforms.
4478 2012-05-16: Version 3.11.2
4480 Revert r11496. (Chromium issue 128146)
4482 Implement map collection for incremental marking. (issue 1465)
4484 Add toString method to CallSite (which describes a frame of the
4488 2012-05-15: Version 3.11.1
4490 Added a readbuffer function to d8 that reads a file into an ArrayBuffer.
4492 Fix freebsd build. (V8 issue 2126)
4494 Performance and stability improvements on all platforms.
4497 2012-05-11: Version 3.11.0
4499 Fixed compose-discard crasher from r11524 (issue 2123).
4501 Activated new global semantics by default. Global variables can
4502 now shadow properties of the global object (ES5.1 erratum).
4504 Properly set ElementsKind of empty FAST_DOUBLE_ELEMENTS arrays when
4505 transitioning (Chromium issue 117409).
4507 Made Error.prototype.name writable again, as required by the spec and
4508 the web (Chromium issue 69187).
4510 Implemented map collection with incremental marking (issue 1465).
4512 Regexp: Fixed overflow in min-match-length calculation
4513 (Chromium issue 126412).
4515 MIPS: Fixed illegal instruction use on Loongson in code for
4516 Math.random() (issue 2115).
4518 Fixed crash bug in VisitChoice (Chromium issue 126272).
4520 Fixed unsigned-Smi check in MappedArgumentsLookup
4521 (Chromium issue 126414).
4523 Fixed LiveEdit for function with no locals (issue 825).
4525 Fixed register clobbering in LoadIC for interceptors
4526 (Chromium issue 125988).
4528 Implemented clearing of CompareICs (issue 2102).
4530 Performance and stability improvements on all platforms.
4533 2012-05-03: Version 3.10.8
4535 Enabled MIPS cross-compilation.
4537 Ensured reload of elements pointer in StoreFastDoubleElement stub.
4538 (Chromium issue 125515)
4540 Fixed corner cases in truncation behavior when storing to
4541 TypedArrays. (issue 2110)
4543 Fixed failure to properly recognize and report out-of-memory
4544 conditions when allocating code space pages. (Chromium issue
4547 Fixed idle notifications to perform a round of incremental GCs
4548 after context disposal. (issue 2107)
4550 Fixed preparser for try statement. (issue 2109)
4552 Performance and stability improvements on all platforms.
4555 2012-04-30: Version 3.10.7
4557 Performance and stability improvements on all platforms.
4560 2012-04-26: Version 3.10.6
4562 Fixed some bugs in accessing details of the last regexp match.
4564 Fixed source property of empty RegExp objects. (issue 1982)
4566 Enabled inlining some V8 API functions.
4568 Performance and stability improvements on all platforms.
4571 2012-04-23: Version 3.10.5
4573 Put new global var semantics behind a flag until WebKit tests are
4576 Enabled stepping into callback passed to builtins.
4577 (Chromium issue 109564)
4579 Performance and stability improvements on all platforms.
4582 2012-04-19: Version 3.10.4
4584 Fixed issues when stressing compaction with WeakMaps.
4586 Fixed missing GVN flag for new-space promotion. (Chromium issue 123919)
4588 Simplify invocation sequence at monomorphic function invocation sites.
4591 Performance and stability improvements on all platforms.
4594 2012-04-17: Version 3.10.3
4596 Fixed several bugs in heap profiles (including issue 2078).
4598 Throw syntax errors on illegal escape sequences.
4600 Implemented rudimentary module linking (behind --harmony flag)
4602 Implemented ES5 erratum: Global declarations should shadow
4603 inherited properties.
4605 Made handling of const more consistent when combined with 'eval'
4608 Fixed V8 on MinGW-x64 (issue 2026).
4610 Performance and stability improvements on all platforms.
4613 2012-04-13: Version 3.10.2
4615 Fixed native ARM build (issues 1744, 539)
4617 Return LOOKUP variable instead of CONTEXT for non-context allocated
4618 outer scope parameters (Chromium issue 119609).
4620 Fixed regular and ElementsKind transitions interfering with each other
4621 (Chromium issue 122271).
4623 Improved performance of keyed loads/stores which have a HeapNumber
4624 index (issues 1388, 1295).
4626 Fixed WeakMap processing for evacuation candidates (issue 2060).
4628 Bailout on possible direct eval calls (Chromium issue 122681).
4630 Do not assume that names of function expressions are context-allocated
4633 Performance and stability improvements on all platforms.
4636 2012-04-10: Version 3.10.1
4638 Fixed bug with arguments object in inlined functions (issue 2045).
4640 Fixed performance bug with lazy initialization (Chromium issue
4643 Added suppport for Mac OS X 64bit builds with GYP.
4644 (Patch contributed by Filipe David Manana <fdmanana@gmail.com>)
4646 Fixed bug with hidden properties (issue 2034).
4648 Fixed a performance bug when reloading pages (Chromium issue 117767,
4651 Fixed bug when optimizing throw in top-level code (issue 2054).
4653 Fixed two bugs with array literals (issue 2055, Chromium issue 121407).
4655 Fixed bug with Math.min/Math.max with NaN inputs (issue 2056).
4657 Fixed a bug with the new runtime profiler (Chromium issue 121147).
4659 Fixed compilation of V8 using uClibc.
4661 Optimized boot-up memory use.
4663 Optimized regular expressions.
4666 2012-03-30: Version 3.10.0
4668 Fixed store IC writability check in strict mode
4669 (Chromium issue 120099).
4671 Resynchronize timers if the Windows system time was changed.
4672 (Chromium issue 119815)
4674 Removed "-mfloat-abi=hard" from host compiler cflags when building for
4676 (https://code.google.com/p/chrome-os-partner/issues/detail?id=8539)
4678 Fixed edge case for case independent regexp character classes
4681 Reset function info counters after context disposal.
4682 (Chromium issue 117767, V8 issue 1902)
4684 Fixed missing write barrier in CopyObjectToObjectElements.
4685 (Chromium issue 119926)
4687 Fixed missing bounds check in HasElementImpl.
4688 (Chromium issue 119925)
4690 Performance and stability improvements on all platforms.
4693 2012-03-23: Version 3.9.24
4695 Activated count-based profiler for ARM.
4697 Fixed use of proxies as f.prototype properties. (issue 2021)
4699 Enabled snapshots on MIPS.
4701 Performance and stability improvements on all platforms.
4704 2012-03-21: Version 3.9.23
4706 Use correct arguments adaptation environment when inlining function
4707 containing arguments. (Issue 2014)
4709 Performance and stability improvements on all platforms.
4712 2012-03-20: Version 3.9.22
4714 Enabled count-based profiler by default.
4716 Implemented a hash based look-up to speed up address checks
4717 in large object space (issue 853).
4719 Performance and stability improvements on all platforms.
4722 2012-03-19: Version 3.9.21
4724 Fixed push-to-trunk script (and re-push).
4726 Added API call that identifies strings that are guaranteed only to
4727 contain ASCII characters.
4730 2012-03-19: Version 3.9.20
4732 Fixed declarations escaping global strict eval. (Issue 1624)
4734 Fixed wrapping of receiver for non-strict callbacks. (Issue 1973)
4736 Fixed function declarations overwriting read-only global properties.
4737 (Chromium issue 115452)
4739 Fixed --use-strict flag in combination with --harmony[-scoping].
4741 Debugger: naive implementation of "step into Function.prototype.bind".
4743 Debugger: added ability to set script source from within OnBeforeCompile
4745 Added flag to always call DebugBreak on abort.
4747 Re-enabled constructor inlining and inline === comparison with boolean
4748 constants. (Issue 2009)
4750 Don't use an explicit s0 in ClampDoubleToUint8. (Issue 2004)
4752 Performance and stability improvements on all platforms.
4755 2012-03-14: Version 3.9.19
4757 Ensure there is a smi check of the receiver for global load and call
4758 ICs (Chromium issue 117794).
4760 Performance and stability improvements on all platforms.
4763 2012-03-13: Version 3.9.18
4765 Ensure consistency of Math.sqrt on Intel platforms.
4767 Remove static initializers in v8. (issue 1859)
4769 Add explicit dependency on v8_base in the GYP-based build.
4771 Performance and stability improvements on all platforms.
4774 2012-03-12: Version 3.9.17
4776 Fixed VFP detection through compiler defines. (issue 1996)
4778 Add Code-related fields to postmortem metadata.
4780 Performance and stability improvements on all platforms.
4783 2012-03-09: Version 3.9.16
4785 Added basic interface inference for modules (behind the --harmony flag).
4787 Added Object.is, Number.isFinite, Number.isNaN.
4789 Updated the Unicode tables to Unicode version 6.1.0.
4791 Performance and stability improvements on all platforms.
4794 2012-03-06: Version 3.9.15
4796 Fix the heap profiler crash caused by memory layout changes between
4799 Fix Error.prototype.toString to throw TypeError. (issue 1980)
4801 Fix double-rounding in strtod for MinGW. (issue 1062)
4803 Fix corrupted snapshot serializaton on ia32. (Chromium issue v8/1985)
4805 Performance and stability improvements on all platforms.
4808 2012-03-01: Version 3.9.14
4810 Performance and stability improvements on all platforms.
4813 2012-02-29: Version 3.9.13
4815 Added code kind check before preparing for OSR. (issue 1900, 115073)
4817 Fixed issue 1802: Pass zone explicitly to zone-allocation on x64 and
4820 Ported string construct stub to x64. (issue 849)
4822 Performance and stability improvements on all platforms.
4825 2012-02-28: Version 3.9.12
4827 Fixed the negative lookup stub to handle deleted entries in a
4828 dictionary. (issue 1964)
4830 Added a new API where the host can supply a callback function. The
4831 callback function can resolve the location of a return address on stack
4832 to the location where a return-address rewriting profiler stashed the
4833 original return address.
4835 Fixed Chromium issue http://crbug.com/115646: When compiling for-in
4836 pass correct context value to the increment instruction.
4838 Fixed issue 1853: Update breakpoints set with partial file name after
4842 2012-02-27: Version 3.9.11
4844 Made 'module' a context-sensitive keyword (V8 issue 1957).
4847 2012-02-24: Version 3.9.10
4849 Fixed V8 issues 1322, 1772 and 1969.
4851 Conformance improvements.
4853 Performance and stability improvements on all platforms.
4856 2012-02-23: Version 3.9.9
4858 Supported fast case for-in in Crankshaft.
4860 Sped up heap snapshot serialization and dominators construction.
4862 Randomized allocation addresses on windows. (Chromium issue 115151)
4864 Fixed compilation with MinGW-w64. (issue 1943)
4866 Fixed incorrect value of assignments to non-extensible properties.
4868 Fixed a crash bug in generated code on ia32.
4870 Performance and stability improvements on all platforms.
4873 2012-02-21: Version 3.9.8
4875 Fixed memory leak and missing #include in StartupDataDecompressor
4878 Renamed static methods to avoid shadowing virtual methods and fix Clang
4879 C++11 compile error.
4881 Fixed sequence of element access in array builtins (issue 1790).
4883 Performance and stability improvements on all platforms.
4886 2012-02-16: Version 3.9.7
4888 Fixed V8 issues 1322, 1878, 1942, 1945 and Chromium issue 113924.
4890 Fixed GCC-4.7 warnings.
4892 Added Navier-Stokes benchmark.
4894 Performance and stability improvements on all platforms.
4897 2012-02-14: Version 3.9.6
4899 Fixed template-related linker error. (issue 1936)
4901 Allowed inlining of functions containing object literals. (issue 1322)
4903 Added --call-graph-size option to tickprocessor. (issue 1937)
4905 Heap Snapshot maximum size limit is too low for really big apps. At the
4906 moment the limit is 256MB. (Chromium issue 113015)
4908 Performance and stability improvements on all platforms.
4911 2012-02-09: Version 3.9.5
4913 Removed unused command line flags.
4915 Performance and stability improvements on all platforms.
4918 2012-02-08: Version 3.9.4
4920 Properly initialize element-transitioning array literals on ARM.
4923 Bug fixes on all platforms.
4926 2012-02-07: Version 3.9.3
4928 When rethrowing an exception, print the stack trace of its original
4929 site instead of rethrow site (Chromium issue 60240).
4931 Increased size of small stacks from 32k to 64k to avoid hitting limits
4932 in Chromium (Chromium issue 112843).
4935 2012-02-06: Version 3.9.2
4937 Added timestamp to --trace-gc output. (issue 1932)
4939 Heap profiler reports implicit references.
4941 Optionally export metadata with libv8 to enable debuggers to inspect V8
4945 2012-02-02: Version 3.9.1
4947 Fixed memory leak in NativeObjectsExplorer::FindOrAddGroupInfo
4948 (Chromium issue 112315).
4950 Fixed a crash in dev tools (Chromium issue 107996).
4952 Added 'dependencies_traverse': 1 to v8 GYP target.
4954 Performance and stability improvements on all platforms.
4957 2012-02-01: Version 3.9.0
4959 Reduced memory use immediately after starting V8.
4961 Stability fixes and performance improvements on all platforms.
4964 2012-01-26: Version 3.8.9
4966 Flush number string cache on GC (issue 1605).
4968 Provide access to function inferred name with
4969 v8::Function::GetInferredName in V8 public API.
4971 Fix building with Clang (issue 1912).
4973 Reduce the space used by the stack for the profiling thread.
4975 Fix misleading documentation of v8::Locker (issue 542).
4977 Introduce readbinary function in d8 to read binary files.
4979 Performance and stability improvements on all platforms.
4982 2012-01-23: Version 3.8.8
4984 Limited number of loop iterations in Heap::ReserveSpace
4985 (Chromium issue 99027).
4987 Fixed solaris build (VirtualMemory) (issue 1761).
4989 Fixed strict vs. non-strict handling of function proxies in
4990 higher-order array and string methods.
4992 Enabled asynchronous remote debugging with d8 (issue 1691).
4994 Stability and performance improvements on all platforms.
4997 2012-01-19: Version 3.8.7
4999 Ensure that LRandom restores rsi after call to the C function on x64.
5000 (Chromium issue http://crbug.com/110509)
5002 Fixing include issues on *bsd when building with scons.
5005 Provide a switch to specify -fno-strict-aliasing
5008 Move WIN32 define from standalone.gypi to common.gypi
5011 Fix corner-case in heap size estimation.
5014 Fix and enable NEW_NON_STRICT_FAST ArgumentsAccess stub on x64.
5017 Performance improvements and bug fixes.
5020 2012-01-16: Version 3.8.6
5022 Add primitive WebGL array support to d8.
5024 Improve heap size estimation (issue 1893).
5026 Hash collision DOS workaround extended from string keys
5029 Provide an API for iterating through all external strings referenced
5032 Adjust position recorded for call expressions. http://crbug.com/109195
5034 Fix GC crash related to instanceof. http://crbug.com/109448
5036 Performance improvements and bug fixes.
5039 2012-01-05: Version 3.8.5
5041 Fix broken test that assumes that no GC can clear the regexp cache (GC
5042 can happen at any time due to Crankshaft).
5044 Fix handling of bogus receivers for Harmony collections. (issue 1884)
5046 Add netbsd support to gyp build.
5048 Determine page size at runtime on posix platforms.
5050 Ensure that store buffer filtering hash sets are cleared after
5051 StoreBuffer::Filter.
5053 Randomize the seed used for string hashing. This helps guard against
5054 CPU-eating DOS attacks against node.js servers. Based on code from
5055 Bert Belder. This version only solves the issue for those that compile
5056 V8 themselves or those that do not use snapshots. A snapshot-based
5057 precompiled V8 will still have predictable string hash codes.
5059 Implement callback when script finishes running in V8 API.
5061 Improve performance of Math.min and Math.max for the case of two
5062 arguments. (issue 1325)
5065 2012-01-02: Version 3.8.4
5067 Performance improvements for large Smi-only arrays.
5069 Fixed InternalArrays construction. (issue 1878)
5072 2011-12-27: Version 3.8.3
5074 Avoid embedding new space objects into code objects in the lithium gap
5075 resolver. (chromium:108296)
5077 Bug fixes and performance optimizations on all platforms.
5080 2011-12-21: Version 3.8.2
5082 Add max optimization flag to v8 gyp build to ensure V8 is always built
5083 fully optimized in Chrome.
5085 MIPS: Bring MIPS to parity with other platforms.
5087 Optimizations and stability improvements on all platforms.
5090 2011-12-19: Version 3.8.1
5092 Fixed GCC 4.7 warnings. Patch from Tobias Burnus.
5094 Stability improvements on all platforms.
5097 2011-12-13: Version 3.8.0
5099 Fixed handling of arrays in DefineOwnProperty. (issue 1756)
5101 Sync parser and preparser on do-while and return statements.
5104 Fixed another corner case for DefineOwnProperty on arrays (issue 1756).
5106 Stability and performance improvements on all platforms.
5109 2011-12-01: Version 3.7.12
5111 Increase tick interval for the android platform.
5113 Fix a bug in the register allocator. (chromium:105112)
5115 Fix handling of recompiling code. (chromium:105375, v8:1782)
5117 Start incremental marking on idle notification. (v8:1458)
5119 Build fixes for various platforms.
5121 Various performance improvements.
5124 2011-11-29: Version 3.7.11
5126 Fixed bug when generating padding to ensure space for lazy
5130 Further reduced pause times due to GC.
5132 Stability and performance improvements on all platforms.
5135 2011-11-23: Version 3.7.10
5137 Set maximum length of FixedArray in terms of elements instead an
5138 absolute number of bytes.
5139 (Chromium issue 103103)
5141 Stability and performance improvements on all platforms.
5144 2011-11-21: Version 3.7.9
5146 Removed exit-time destructors.
5148 Stability and performance improvements on all platforms.
5151 2011-11-17: Version 3.7.8
5153 Removed hidden prototype from builtins, i.e., deleting an overridden
5154 function on builtins will not make the original function reappear.
5156 Added NetBSD support for scons build.
5158 Performance improvements on all platforms.
5161 2011-11-14: Version 3.7.7
5163 Fix missing fast property accessors in heap snapshots.
5167 2011-11-11: Version 3.7.6
5169 Fixed filtering of store buffer for large object pages.
5172 Fixed generated hash function on all platforms.
5175 Fixed Heap::Shrink to ensure that it does not free pages that are
5177 (Chromium issue 100414)
5179 Stability and performance improvements on all platforms.
5182 2011-11-10: Version 3.7.5
5184 Added initial gyp infrastructure for MIPS.
5186 Implemented performance improvements to the incremental garbage
5189 Added optimizations and stability improvements on all platforms.
5192 2011-11-07: Version 3.7.4
5194 Proper "libv8.so.3.7.4" SONAME for Linux shared library (issue 1786).
5196 Fix Harmony sets and maps to allow null and undefined as keys
5197 (still hidden behind --harmony flag) (issue 1622).
5199 Implement VirtualMemory on FreeBSD to fix build (issue 1807).
5201 Enable VFP instructions for Android.
5203 Fix error handling in Date.prototype.toISOString (issue 1792).
5205 Bug fixes and performance improvements for all platforms.
5207 Not officially supported but noteworthy: Crankshaft for MIPS :-)
5210 2011-10-28: Version 3.7.3
5212 Slight deoptimization as a workaround for issue with jslint: Issue
5216 2011-10-27: Version 3.7.2
5218 Fix bug in deoptimization. Known issue with jslint: Issue 1789.
5221 2011-10-26: Version 3.7.1
5223 Achieved 33% speedup in debug-mode tests.
5225 Removed special casing of calls to RegExp test and exec methods with no
5226 argument. Now matches new JSC behaviour. crbug.com/75740.
5228 Return the empty string on cyclic references in toString (ES5
5231 Fixed bug triggered by JSBeautifier. crbug.com/100409.
5233 Made Math.random state per-context instead of per-process (issue 864).
5235 Fixed stack traces to skip native functions.
5237 Make snapshots (new contexts) smaller and faster.
5239 Fixed handling of Function.apply for non-array arguments.
5241 Fixed evaluation order in defineProperties to match FireFox.
5243 Fixed handling of non-object receivers for array builtins,
5246 Multiple fixes to improve compliance with test262.
5248 Fixed compatibility with older Android releases.
5250 Fixed compilation with gcc-4.5.3.
5252 Improved performance of WriteUtf8, issue 1665.
5254 Made native syntax an early error in the preparser.
5256 Fixed issues 793 and 893 relating to Function.prototype.bind.
5258 Improved let, const, Set and Map support and other Harmony features
5259 (behind the --harmony flag).
5261 Changed evaluation order for > and <= to match ES5 instead of ES3.
5263 Bug fixes and performance improvements on all platforms.
5266 2011-10-13: Version 3.7.0
5268 Fixed array handling for Object.defineOwnProperty (ES5 conformance).
5270 Fixed issue 1757 (string slices of external strings).
5272 Fixed issue 1759 (ARM).
5274 Added flag --noclever-optimizations to disable some things that
5275 caused trouble in the past.
5277 Added flag --stress-compaction for testing.
5279 Added flag --harmony to activate all experimental Harmony features.
5282 2011-10-10: Version 3.6.6
5284 Added a GC pause visualization tool.
5286 Added presubmit=no and werror=no flags to Makefile.
5288 ES5/Test262 conformance improvements.
5290 Fixed compilation issues with GCC 4.5.x (issue 1743).
5292 Bug fixes and performance improvements on all platforms.
5295 2011-10-05: Version 3.6.5
5297 New incremental garbage collector.
5299 Removed the hard heap size limit (soft heap size limit is still
5300 700/1400Mbytes by default).
5302 Implemented ES5 generic Array.prototype.toString (Issue 1361).
5304 V8 now allows surrogate pair codes in decodeURIComponent (Issue 1415).
5306 Fixed x64 RegExp start-of-string bug (Issues 1746, 1748).
5308 Fixed propertyIsEnumerable for numeric properties (Issue 1692).
5310 Fixed the MinGW and Windows 2000 builds.
5312 Fixed "Prototype chain is not searched if named property handler does
5313 not set a property" (Issue 1636).
5315 Made the RegExp.prototype object be a RegExp object (Issue 1217).
5317 Disallowed future reserved words as labels in strict mode.
5319 Fixed string split to correctly coerce the separator to a string
5322 API: Added an optional source length field to the Extension
5325 API: Added Debug::DisableAgent to match existing Debug::EnableAgent
5328 Added "native" target to Makefile for the benefit of Linux distros.
5330 Fixed: debugger stops stepping outside evaluate (Issue 1639).
5332 More work on ES-Harmony proxies. Still hidden behind a flag.
5334 Bug fixes and performance improvements on all platforms.
5337 2011-09-15: Version 3.6.4
5339 Fixed d8's broken readline history.
5341 Removed the need for code delete events in CPU profiler (Issue 1466).
5343 Fixed debugger stepping next with trycatch recursion (Issue 1639).
5345 Fixing parallel execution in d8 (with -p) and some memory leaks.
5347 Support for precise stepping in functions compiled before debugging was
5351 2011-09-13: Version 3.6.3
5353 Implemented better support of typed arrays in the d8 shell.
5355 Bug fixes and performance improvements on all platforms.
5358 2011-09-08: Version 3.6.2
5360 Added "dependencies" target to top-level Makefile.
5362 Added ability to turn profiler on/off in d8.
5364 Added "soname_version" parameter to common.gypi, v8.gyp, and Makefile.
5366 Fixed several crash bugs.
5369 2011-09-07: Version 3.6.1
5371 Fixed a bug in abrupt exit from with or catch inside finally.
5373 Fixed possible crash in FixedDoubleArray::Initialize() (Chromium
5376 Fixed a bug in Page::GetRegionMaskForSpan (Chromium issue 94425).
5378 Fixed a few clang warnings (which -Werror treated as errors).
5380 Performance improvements on all platforms.
5383 2011-09-05: Version 3.6.0
5385 Fixed a bug when optimizing named function expression (issue 1647).
5387 Fixed a bug when optimizing f.call.apply (issue 1650).
5389 Made arguments and caller always be null on native functions
5390 (issues 1548 and 1643).
5392 Fixed issue 1648 (cross-compiling x64 targeting ia32).
5394 Fixed issue 371 (d8 printing of strings containing \0).
5396 Fixed order of evaluation in arguments to parseInt (issue 1649).
5398 Fixed a problem with large heap snapshots in Chrome DevTools
5399 (issue 1658, chromium issue 89268).
5401 Upped default maximum heap size from 512M to 700M.
5404 2011-08-31: Version 3.5.10
5406 Added dependency of v8_base on WinSocket2 Windows library in
5412 2011-08-29: Version 3.5.9
5414 Made FromPropertyDescriptor not trigger inherited setters.
5416 Fixed .gyp files to work on the ARM simulator.
5418 Fixed shared library build warnings for MSVS.
5421 2011-08-24: Version 3.5.8
5423 Added V8EXPORT attributes for v8::Array::CheckCast and
5424 v8::Number::CheckCast.
5426 Made a slight API change enabling opting out from null termination
5427 in String::Write*().
5429 Fixed arm build for gcc-4.6.
5432 2011-08-22: Version 3.5.7
5434 Make scanner handle invalid unicode escapes in identifiers correctly.
5436 Make regexp flag parsing stricter.
5438 Fix several memory leaks.
5441 2011-08-17: Version 3.5.6
5443 Fixed issue that could cause crashes when running with --heap-stats.
5445 Fixed compilation on Linux 2.6.9 and older.
5447 Fixed live-object-list to work with isolates.
5449 Fixed memory leaks in zones and isolates.
5451 Fixed a performance regression for TypedArrays on x64.
5453 Stability improvements on all platforms.
5456 2011-08-15: Version 3.5.5
5458 Fixed bugs involving negative zero and the optimizing compiler.
5460 Fixed optimized version of Function.apply(x, arguments). (issue 1592)
5462 Eliminated uses of deprecated ARM instructions.
5464 Sped up Math.floor by using SSE 4.1 roundsd instruction on ia32.
5466 Removed restriction on the size of disassembled code that is printed.
5469 2011-08-10: Version 3.5.4
5471 Added a preliminary implementation of ES Harmony weak maps. Weak
5472 maps can be enabled by the flag --harmony-weakmaps.
5474 Introduced a toplevel Makefile to support GYP-based building. GYP
5475 can be obtained from http://gyp.googlecode.com.
5477 Fixed a bug in the length property of functions created by
5478 Function.prototype.bind.
5480 Reduced malloc heap allocation on process startup.
5482 Several important code generation bug fixes.
5484 Performance improvements on all platforms.
5487 2011-08-03: Version 3.5.3
5489 MIPS: Port of fix to ClassOf check from ARM.
5490 Patch from Paul Lind <plind44@gmail.com>.
5492 Stopped using mprotect on Cygwin.
5493 Avoided uninitialized member warning on gcc 4.3.4
5494 Both patches by Bert Belder.
5496 Bug fixes and performance improvements on all platforms.
5499 2011-08-01: Version 3.5.2
5501 Performance improvements on all platforms.
5504 2011-07-28: Version 3.5.1
5506 Fixed setting the readonly flag on the prototype property using the
5507 API call FunctionTemplate::SetPrototypeAttributes (issue 1539).
5509 Changed the tools/test.py script to use d8 instead of shell for
5512 Fixed crash in ToBooleanStub when GC happens during invocation.
5514 Enabled automatic unboxing of double arrays.
5516 Performance improvements on all platforms.
5519 2011-07-25: Version 3.5.0
5521 Implemented Object.prototype.{hasOwnProperty, propertyIsEnumerable} for
5524 Removed logging to memory support.
5526 Bugfixes and performance work.
5529 2011-07-20: Version 3.4.14
5531 Fix the debugger for strict-mode functions. (Chromium issue 89236)
5533 Add GetPropertyAttribute method for Object in the API. (Patch by
5536 Fix -Wunused-but-set-variable for gcc-4.6 on x64. (Issue 1291)
5539 2011-07-18: Version 3.4.13
5541 Improved debugger support to allow inspection of optimized frames (issue
5544 Fixed a bug in prototype transitions cache clearing introduced by r8165.
5546 Fixed shortcutting bug in HInferRepresentation. Patch by Andy Wingo.
5548 Fixed a memory leak in sample/shell.cc (dispose semaphores).
5550 Simplified HClampToUint8. Patch by Andy Wingo.
5552 Exposed APIs for detecting boxed primitives, native errors. Patch by
5555 Added map check for COW elements to crankshaft array handling code
5558 Sample shell and (a light version of) D8 links against a shared library
5561 Fixed bug in array filter and reduce functions (issue 1559).
5563 Avoid TLS load in AstNode constructor.
5565 Introduced a random entropy source which can optionally be provided at
5566 initialization. (Chromium issue 89462).
5569 2011-07-13: Version 3.4.12
5571 Added --prof profiling option to d8 shell.
5573 Fixed a bug where reading a directory in d8 shell hangs (issue 1533).
5575 Fixed a potential assertion failure in const declarations.
5577 Fixed an assertion failure in descriptor arrays (issue 1526).
5579 Enabled fast thread-local storage by default on supported platforms.
5581 Improved reporting of source position for global variable loads
5585 2011-07-11: Version 3.4.11
5587 Fixed MinGW32 build.
5589 Fixed a GC bug with RegExp code flushing.
5591 Implemented Object.defineProperty for proxies.
5593 Fixed a bug in for/in iteration of arguments objects (issue 1531).
5595 Added debugger support for inspecting optimized frames (issue 1140).
5597 Allowed JSObject::PreventExtensions to work for arguments objects.
5599 Bugfixes and performance work.
5602 2011-07-06: Version 3.4.10
5604 Fixed debugger not breaking on certain "if" statements (issue 1523).
5606 Fixed assertion failure in runtime profiler when running on IA32
5607 without snapshot (issue 1522).
5609 Fixed ABI for API calls on IA32 (for clang compatibility).
5611 Introduced code flushing of RegExp code to free memory used by
5614 Fixed linux-tick-processor built wrong version of v8 (issue 1532).
5616 Fixed assertion failure in v8::TryCache::StackTrace (issue 1529).
5618 Performance improvements on all platforms.
5621 2011-07-04: Version 3.4.9
5623 Added support for debugger inspection of locals in optimized frames
5626 Fixed SConstruct to pass correct defines to samples/preparser when
5627 building with library=shared.
5629 Made date parser handle ES5 Date Time Strings correctly (issue 1498).
5631 Fixed a bug in Object.defineProperty on the arguments object.
5633 Performance improvements on all platforms.
5636 2011-06-29: Version 3.4.8
5638 Ensure 16-byte stack alignment on Solaris (issue 1505).
5640 Fix "illegal access" when calling parseInt with a radix
5641 that is not a smi. (issue 1246).
5644 2011-06-27: Version 3.4.7
5646 Fixed 64-bit build on FreeBSD.
5648 Added API to set the property attributes for the prototype
5649 property on functions created from FunctionTemplates.
5651 Bugfixes and performance work.
5654 2011-06-22: Version 3.4.6
5656 Lowered limit on code space for systems with low memory supply.
5658 Allowed compiling v8_shell with the 'host' toolset (issue 82437).
5660 Extended setBreakpoint API to accept partial script name (issue 1418).
5662 Made multi-line comments not count when deciding whether the '-->'
5663 comment starter is first on a line. This matches Safari.
5665 Made handling of non-array recievers in Array length setter correct
5668 Added ability to heap profiler to iterate over snapshot's node
5672 2011-06-20: Version 3.4.5
5674 Fixed issues 794, 1097, 1215(partial), 1417, 1435, 1472, 1473,
5677 Improved code generation for !0 and !1.
5679 Reduced memory usage for regular expressions with nested qualifiers.
5682 Fixed V8 to count line terminators in multi-line comments.
5683 (Chromium issue 86431)
5685 Fixed disassembler=on option for release-mode builds. (issue 1473)
5687 Performance improvements on all platforms.
5690 2011-06-15: Version 3.4.4
5692 Added snapshot compression support and --stress-opt flag to d8.
5694 Improved performance of try/catch.
5696 Several GYP-related changes: Added support for building Xcode project
5697 files. Make the ARM simulator build with GYP again. Generate Makefiles
5698 for all architectures on Linux.
5700 Fixed Array.prototype.{reduce,reduceRight} to pass undefined as the
5701 receiver for strict mode callbacks. (issue 1436)
5703 Fixed a bug where an array load was incorrectly hoisted by GVN.
5705 Handle 'undefined' correctly when === has been specialized for doubles.
5708 Corrected the limit of local variables in an optimized function from 64
5711 Correctly set ReadOnly flag on indexed properties when using the API Set
5712 method. (issue 1470)
5714 Give the correct error message when Object.isExtensible is called on a
5715 non-object. (issue 1452)
5717 Added GetOwnPropertyNames method for Object in the API. Patch by Peter
5720 Do not redefine properties unneccesarily in seal and freeze. (issue
5723 IsExecutionTerminating has an Isolate parameter now.
5725 Distinguish keyed loads with a symbol key from fast elements loads,
5726 avoiding some useless deoptimizations. (issue 1471)
5729 2011-06-08: Version 3.4.3
5731 Clear the global thread table when an isolate is disposed
5734 Converted time zone name to UTF8 on Windows (issue 1290).
5736 Limited the number of arguments in a function call to 32766
5739 Compress sources of JS libraries in addition to the snapshot.
5741 Fixed a bug in Lithium environment iteration.
5743 Performance improvements on all platforms.
5746 2011-06-06: Version 3.4.2
5748 More work on ES-Harmony proxies. Still hidden behind a flag.
5750 Fixed some crash bugs and improved performance.
5752 Fixed building with gdb debugging support.
5754 Do not install SIGPROF handler until it is needed.
5756 Added DateTimeFormat to i18n API.
5758 Fixed compilation on OpenBSD.
5760 Take the ulimit into account when sizing the heap. OpenBSD users
5761 may still have to increase the default ulimit to run heavy pages in
5765 2011-06-01: Version 3.4.1
5767 Fixed JSON stringify issue with arrays.
5769 Changed calls to JS builtins to be passed undefined when called with
5772 Implemented the set trap for Harmony proxies. Proxies still need to
5773 be enabled with the --harmony-proxies flag.
5776 2011-05-30: Version 3.4.0
5778 Changed calls to undefined property setters to not throw (issue 1355).
5780 Made RegExp objects not callable.
5782 Fixed issues on special case large JSON strings in new json parser
5783 (issues http://crbug.com/83877 and http://crbug.com/84186).
5785 Performance improvements on all platforms.
5788 2011-05-25: Version 3.3.10
5790 Fixed calls of strict mode function with an implicit receiver.
5792 Fixed fast handling of arrays to properly deal with changes to the
5793 Object prototype (issue 1403).
5795 Changed strict mode poison pill to be the same type error function
5798 Fixed a debug crash in arguments object handling (issue 1227).
5800 Fixed a bug in deoptimization on x64 (issue 1404).
5802 Performance improvements and bug fixes on all platforms.
5805 2011-05-23: Version 3.3.9
5807 Added DateTimeFormat class to experimental i18n API.
5809 Extended preparser to give early errors for some strict mode
5812 Removed legacy execScript function from V8.
5814 Extended isolate API with the ability to add embedder-specific
5817 Added basic support for polymorphic loads from JS and external
5820 Fixed bug in handling of switch statements in the optimizing
5824 2011-05-18: Version 3.3.8
5826 Added MarkIndependent to the persistent handle API. Independent
5827 handles are independent of all other persistent handles and can be
5828 garbage collected more frequently.
5830 Implemented the get trap for Harmony proxies. Proxies are enabled
5831 with the --harmony-proxies flag.
5833 Performance improvements and bug fixes on all platforms.
5836 2011-05-16: Version 3.3.7
5838 Updated MIPS infrastructure files.
5840 Performance improvements and bug fixes on all platforms.
5843 2011-05-11: Version 3.3.6
5845 Updated MIPS infrastructure files.
5847 Added method IsCallable for Object to the API.
5848 Patch by Peter Varga.
5851 2011-05-09: Version 3.3.5
5853 Fixed build on FreeBSD. Patch by Akinori MUSHA.
5855 Added check that receiver is JSObject on API calls.
5857 Implemented CallAsConstructor method for Object in the API (Issue 1348).
5858 Patch by Peter Varga.
5860 Added CallAsFunction method to the Object class in the API (Issue 1336).
5861 Patch by Peter Varga.
5863 Added per-isolate locking and unlocking.
5865 Fixed bug in x64 >>> operator (Issue 1359).
5868 2011-05-04: Version 3.3.4
5870 Implemented API to disallow code generation from strings for a context
5873 Fixed bug with whitespaces in parseInt (issue 955).
5875 Fixed bug with == comparison of Date objects (issue 1356).
5877 Added GYP variables for ARM code generation:
5878 v8_can_use_vfp_instructions, v8_can_use_unaligned_accesses
5879 and v8_use_arm_eabi_hardfloat.
5882 2011-05-02: Version 3.3.3
5884 Added support for generating Visual Studio solution and project files
5887 Implemented support for ARM EABI calling convention variation where
5888 floating-point arguments are passed in registers (hardfloat).
5890 Added Object::HasOwnProperty() to the API.
5892 Added support for compressing startup data to reduce binary size. This
5893 includes build time support and an API for the embedder to decompress
5894 the startup data before initializing V8.
5896 Reduced the profiling hooks overhead from >400% to 25% when using
5899 Performance improvements and bug fixes on all platforms.
5902 2011-04-27: Version 3.3.2
5904 Fixed crash bug on ARM with no VFP3 hardware.
5906 Fixed compilation of V8 without debugger support.
5908 Improved performance on JSLint.
5910 Added support Float64 WebGL arrays.
5912 Fixed crash bug in regexp replace.
5915 2011-04-20: Version 3.3.1
5917 Reduced V8 binary size by removing virtual functions from hydrogen.
5919 Fixed crash bug on x64.
5921 Performance improvements on ARM and IA32.
5924 2011-04-18: Version 3.3.0
5926 Fixed bug in floating point rounding in Crankshaft on ARM
5929 Fixed a number of issues with running without VFPv3 support on ARM
5932 Introduced v8Locale.Collator, a partial implementation of Collator
5933 per last ECMAScript meeting + mailing list.
5935 Minor performance improvements and bug fixes.
5938 2011-04-13: Version 3.2.10
5940 Fixed bug in external float arrays on ARM (issue 1323).
5942 Minor performance improvements and bug fixes.
5945 2011-04-11: Version 3.2.9
5947 Removed support for ABI prior to EABI on ARM.
5949 Fixed multiple crash bugs.
5951 Added GCMole to the repository, a simple static analysis tool that
5952 searches for GC-unsafe evaluation order dependent callsites.
5954 Made preparser API be exported in shared libraries.
5956 Fixed multiple issues in EcmaScript 5 strict mode implementation.
5958 Fixed mutable __proto__ property if object is not extensible
5961 Fixed auto suspension of the sampler thread.
5964 2011-04-06: Version 3.2.8
5966 Exposed WebGL typed array constructors in the shell sample.
5968 Performance improvements on all platforms.
5971 2011-04-04: Version 3.2.7
5973 Disabled the original 'classic' V8 code generator. Crankshaft is
5974 now the default on all platforms.
5976 Changed the heap profiler to use more descriptive names.
5978 Performance and stability improvements to isolates on all platforms.
5981 2011-03-30: Version 3.2.6
5983 Fixed xcode build warning in shell.cc (out of order initialization).
5985 Fixed null-pointer dereference in the compiler when running without
5986 SSE3 support (Chromium issue 77654).
5988 Fixed x64 compilation error due to some dead code. (Issue 1286)
5990 Introduced scons target to build the preparser stand-alone example.
5992 Made FreeBSD build and pass all tests.
5995 2011-03-28: Version 3.2.5
5997 Fixed build with Irregexp interpreter (issue 1266).
5999 Added Crankshaft support for external arrays.
6001 Fixed two potential crash bugs.
6004 2011-03-23: Version 3.2.4
6006 Added isolates which allows several V8 instances in the same process.
6007 This is controlled through the new Isolate class in the API.
6009 Implemented more of EcmaScript 5 strict mode.
6011 Reduced the time it takes to make detailed heap snapshot.
6013 Added a number of commands to the ARM simulator and enhanced the ARM
6017 2011-03-17: Version 3.2.3
6019 Fixed a number of crash bugs.
6021 Fixed Array::New(length) to return an array with a length (issue 1256).
6023 Fixed FreeBSD build.
6025 Changed __defineGetter__ to not throw (matching the behavior of Safari).
6027 Implemented more of EcmaScript 5 strict mode.
6029 Improved Crankshaft performance on all platforms.
6032 2011-03-14: Version 3.2.2
6034 Fixed a number of crash and correctness bugs.
6036 Improved Crankshaft performance on all platforms.
6038 Fixed Crankshaft on Solaris/Illumos.
6041 2011-03-10: Version 3.2.1
6043 Fixed a number of crash bugs.
6045 Improved Crankshaft for x64 and ARM.
6047 Implemented more of EcmaScript 5 strict mode.
6050 2011-03-07: Version 3.2.0
6052 Fixed a number of crash bugs.
6054 Turned on Crankshaft by default on x64 and ARM.
6056 Improved Crankshaft for x64 and ARM.
6058 Implemented more of EcmaScript 5 strict mode.
6061 2011-03-02: Version 3.1.8
6063 Fixed a number of crash bugs.
6065 Improved Crankshaft for x64 and ARM.
6067 Implemented more of EcmaScript 5 strict mode.
6069 Fixed issue with unaligned reads and writes on ARM.
6071 Improved heap profiler support.
6074 2011-02-28: Version 3.1.7
6076 Fixed a number of crash bugs.
6078 Improved Crankshaft for x64 and ARM.
6080 Fixed implementation of indexOf/lastIndexOf for sparse
6081 arrays (http://crbug.com/73940).
6083 Fixed bug in map space compaction (http://crbug.com/59688).
6085 Added support for direct getter accessors calls on ARM.
6088 2011-02-24: Version 3.1.6
6090 Fixed a number of crash bugs.
6092 Added support for Cygwin (issue 64).
6094 Improved Crankshaft for x64 and ARM.
6096 Added Crankshaft support for stores to pixel arrays.
6098 Fixed issue in CPU profiler with Crankshaft.
6101 2011-02-16: Version 3.1.5
6103 Change RegExp parsing to disallow /(*)/.
6105 Added GDB JIT support for ARM.
6107 Fixed several crash bugs.
6109 Performance improvements on the IA32 platform.
6112 2011-02-14: Version 3.1.4
6114 Fixed incorrect compare of prototypes of the global object (issue
6117 Fixed a bug in optimizing calls to global functions (issue 1106).
6119 Made optimized Function.prototype.apply safe for non-JSObject first
6120 arguments (issue 1128).
6122 Fixed an error related to element accessors on Object.prototype and
6123 parser errors (issue 1130).
6125 Fixed a bug in sorting an array with large array indices (issue 1131).
6127 Properly treat exceptions thrown while compiling (issue 1132).
6129 Fixed bug in register requirements for function.apply (issue 1133).
6131 Fixed a representation change bug in the Hydrogen graph construction
6134 Fixed the semantics of delete on parameters (issue 1136).
6136 Fixed a optimizer bug related to moving instructions with side effects
6139 Added support for the global object in Object.keys (issue 1150).
6141 Fixed incorrect value for Math.LOG10E
6142 (issue http://code.google.com/p/chromium/issues/detail?id=72555)
6144 Performance improvements on the IA32 platform.
6146 Implement assignment to undefined reference in ES5 Strict Mode.
6149 2011-02-09: Version 3.1.3
6151 Fixed a bug triggered by functions with huge numbers of declared
6154 Fixed zap value aliasing a real object - debug mode only (issue 866).
6156 Fixed issue where Array.prototype.__proto__ had been set to null
6159 Fixed stability bugs in Crankshaft for x86.
6162 2011-02-07: Version 3.1.2
6164 Added better security checks when accessing properties via
6165 Object.getOwnPropertyDescriptor.
6167 Fixed bug in Object.defineProperty and related access bugs (issues
6168 992, 1083 and 1092).
6170 Added LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to ease
6171 copyright notice generation for embedders.
6174 2011-02-02: Version 3.1.1
6176 Perform security checks before fetching the value in
6177 Object.getOwnPropertyDescriptor.
6179 Fixed a bug in Array.prototype.splice triggered by passing no
6182 Fixed bugs in -0 in arithmetic and in Math.pow.
6184 Fixed bugs in the register allocator and in switching from optimized
6185 to unoptimized code.
6188 2011-01-31: Version 3.1.0
6190 Performance improvements on all platforms.
6193 2011-01-28: Version 3.0.12
6195 Added support for strict mode parameter and object property
6198 Fixed a couple of crash bugs.
6201 2011-01-25: Version 3.0.11
6203 Fixed a bug in deletion of lookup slots that could cause global
6204 variables to be accidentally deleted (http://crbug.com/70066).
6206 Added support for strict mode octal literal verification.
6208 Fixed a couple of crash bugs (issues 1070 and 1071).
6211 2011-01-24: Version 3.0.10
6213 Fixed External::Wrap for 64-bit addresses (issue 1037).
6215 Fixed incorrect .arguments variable proxy handling in the full
6216 code generator (issue 1060).
6218 Introduced partial strict mode support.
6220 Changed formatting of recursive error messages to match Firefox and
6221 Safari (issue http://crbug.com/70334).
6223 Fixed incorrect rounding for float-to-integer conversions for external
6224 array types, which implement the Typed Array spec
6225 (issue http://crbug.com/50972).
6227 Performance improvements on the IA32 platform.
6230 2011-01-19: Version 3.0.9
6232 Added basic GDB JIT Interface integration.
6234 Make invalid break/continue statements a syntax error instead of a
6238 2011-01-17: Version 3.0.8
6240 Exposed heap size limit to the heap statistics gathered by
6241 the GetHeapStatistics API.
6243 Wrapped external pointers more carefully (issue 1037).
6245 Hardened the implementation of error objects to avoid setters
6246 intercepting the properties set then throwing an error.
6248 Avoided trashing the FPSCR when calculating Math.floor on ARM.
6250 Performance improvements on the IA32 platform.
6253 2011-01-10: Version 3.0.7
6255 Stopped calling inherited setters when creating object literals
6258 Changed interpretation of malformed \c? escapes in RegExp to match
6261 Enhanced the command-line debugger interface and fixed some minor
6262 bugs in the debugger.
6264 Performance improvements on the IA32 platform.
6267 2011-01-05: Version 3.0.6
6269 Allowed getters and setters on JSArray elements (issue 900).
6271 Stopped JSON objects from hitting inherited setters (part of
6274 Allowed numbers and strings as names of getters/setters in object
6275 initializer (issue 820).
6277 Added use_system_v8 option to gyp (off by default), to make it easier
6278 for Linux distributions to ship with system-provided V8 library.
6280 Exported external array data accessors (issue 1016).
6282 Added labelled thread names to help with debugging (on Linux).
6285 2011-01-03: Version 3.0.5
6287 Fixed a couple of cast errors for gcc-3.4.3.
6289 Performance improvements in GC and IA32 code generator.
6292 2010-12-21: Version 3.0.4
6294 Added Date::ResetCache() to the API so that the cached values in the
6295 Date object can be reset to allow live DST / timezone changes.
6297 Extended existing support for printing (while debugging) the contents
6298 of objects. Added support for printing objects from release builds.
6300 Fixed V8 issues 989, 1006, and 1007.
6303 2010-12-17: Version 3.0.3
6305 Reapplied all changes for version 3.0.1.
6307 Improved debugger protocol for remote debugging.
6309 Added experimental support for using gyp to generate build files
6312 Fixed implementation of String::Write in the API (issue 975).
6315 2010-12-15: Version 3.0.2
6317 Revert version 3.0.1 and patch 3.0.1.1.
6320 2010-12-13: Version 3.0.1
6322 Added support for an experimental internationalization API as an
6323 extension. This extension is disabled by default but can be enabled
6324 when building V8. The ECMAScript internationalization strawman is
6325 at http://wiki.ecmascript.org/doku.php?id=strawman:i18n_api.
6327 Made RegExp character class parsing stricter. This mirrors a change
6328 to RegExp parsing in WebKit.
6330 Fixed a bug in Object.defineProperty when used to change attributes
6331 of an existing property. It incorrectly set the property value to
6332 undefined (issue 965).
6334 Fixed several different compilation failures on various platforms
6335 caused by the 3.0.0 release.
6337 Optimized Math.pow so it can work on unboxed doubles.
6339 Sped up quoting of JSON strings by removing one traversal of the
6343 2010-12-07: Version 3.0.0
6345 Improved performance by (partially) addressing issue 957 on
6346 IA-32. Still needs more work for the other architectures.
6349 2010-11-29: Version 2.5.9
6351 Fixed crashes during GC caused by partially initialize heap
6354 Fixed bug in process sample that caused memory leaks.
6356 Improved performance on ARM by implementing missing stubs and
6359 Improved heap profiler support.
6361 Added separate seeding on Windows of the random number generator
6362 used internally by the compiler (issue 936).
6364 Exposed API for getting the name of the function used to construct
6367 Fixed date parser to handle one and two digit millisecond
6370 Fixed number parsing to disallow space between sign and
6374 2010-11-23: Version 2.5.8
6376 Removed dependency on Gay's dtoa.
6378 Improved heap profiler precision and speed.
6380 Reduced overhead of callback invocations on ARM.
6383 2010-11-18: Version 2.5.7
6385 Fixed obscure evaluation order bug (issue 931).
6387 Split the random number state between JavaScript and the private API.
6389 Fixed performance bug causing GCs when generating stack traces on
6390 code from very large scripts.
6392 Fixed bug in parser that allowed (foo):42 as a labelled statement
6395 Provide more accurate results about used heap size via
6398 Allow build-time customization of the max semispace size.
6400 Made String.prototype.split honor limit when separator is empty
6403 Added missing failure check after expecting an identifier in
6404 preparser (Chromium issue 62639).
6407 2010-11-10: Version 2.5.6
6409 Added support for VFP rounding modes to the ARM simulator.
6411 Fixed multiplication overflow bug (issue 927).
6413 Added a limit for the amount of executable memory (issue 925).
6416 2010-11-08: Version 2.5.5
6418 Added more aggressive GC of external objects in near out-of-memory
6421 Fixed a bug that gave the incorrect result for String.split called
6422 on the empty string (issue 924).
6425 2010-11-03: Version 2.5.4
6427 Improved V8 VFPv3 runtime detection to address issue 914.
6430 2010-11-01: Version 2.5.3
6432 Fixed a bug that prevents constants from overwriting function values
6433 in object literals (issue 907).
6435 Fixed a bug with reporting of impossible nested calls of DOM functions
6436 (issue http://crbug.com/60753).
6439 2010-10-27: Version 2.5.2
6441 Improved sampler resolution on Linux.
6443 Allowed forcing the use of a simulator from the build script
6444 independently of the host architecture.
6446 Fixed FreeBSD port (issue 912).
6448 Made windows-tick-processor respect D8_PATH.
6450 Implemented --noinline-new flag fully on IA32, X64 and ARM platforms.
6453 2010-10-20: Version 2.5.1
6455 Fixed bug causing spurious out of memory exceptions
6456 (issue http://crbug.com/54580).
6458 Fixed compilation error on Solaris platform (issue 901).
6460 Fixed error in strtod (string to floating point number conversion)
6461 due to glibc's use of 80-bit floats in the FPU on 32-bit linux.
6463 Adjusted randomized allocations of executable memory to have 64k
6464 granularity (issue http://crbug.com/56036).
6466 Supported profiling using kernel perf_events on linux. Added ll_prof
6467 script to tools and --ll-prof flag to V8.
6470 2010-10-18: Version 2.5.0
6472 Fixed bug in cache handling of lastIndex on global regexps
6473 (issue http://crbug.com/58740).
6475 Added USE_SIMULATOR macro that explicitly indicates that we wish to use
6476 the simulator as the execution engine (by Mark Lam <mark.lam@palm.com>
6477 from Hewlett-Packard Development Company, LP).
6479 Fixed compilation error on ARM with gcc 4.4 (issue 894).
6482 2010-10-13: Version 2.4.9
6484 Fixed a bug in the handling of conditional expressions in test
6485 contexts in compiler for top-level code.
6487 Added "//@ sourceURL" information to the StackTrace API.
6489 Exposed RegExp construction through the API.
6492 2010-10-04: Version 2.4.8
6494 Fixed a bug in ResumeProfilerEx causing it to not always write out the
6495 whole snapshot (issue 868).
6497 Performance improvements on all platforms.
6500 2010-09-30: Version 2.4.7
6502 Changed the command-line flag --max-new-space-size to be in kB and the
6503 flag --max-old-space-size to be in MB (previously they were in bytes).
6505 Added Debug::CancelDebugBreak to the debugger API.
6507 Fixed a bug in getters for negative numeric property names
6508 (https://bugs.webkit.org/show_bug.cgi?id=46689).
6510 Performance improvements on all platforms.
6513 2010-09-27: Version 2.4.6
6515 Fixed assertion failure related to copy-on-write arrays (issue 876).
6517 Fixed build failure of 64-bit V8 on Windows.
6519 Fixed a bug in RegExp (issue http://crbug.com/52801).
6521 Improved the profiler's coverage to cover more functions (issue 858).
6523 Fixed error in shift operators on 64-bit V8
6524 (issue http://crbug.com/54521).
6527 2010-09-22: Version 2.4.5
6529 Changed the RegExp benchmark to exercise the regexp engine on different
6530 inputs by scrambling the input strings.
6532 Fixed a bug in keyed loads on strings.
6534 Fixed a bug with loading global function prototypes.
6536 Fixed a bug with profiling RegExp calls (issue http://crbug.com/55999).
6538 Performance improvements on all platforms.
6541 2010-09-15: Version 2.4.4
6543 Fixed bug with hangs on very large sparse arrays.
6545 Now tries harder to free up memory when running out of space.
6547 Added heap snapshots to JSON format to API.
6549 Recalibrated benchmarks.
6552 2010-09-13: Version 2.4.3
6554 Made Date.parse properly handle TZ offsets (issue 857).
6556 Performance improvements on all platforms.
6559 2010-09-08: Version 2.4.2
6563 Fixed stack corruption bug.
6565 Fixed compilation for newer C++ compilers that found Operand(0)
6569 2010-09-06: Version 2.4.1
6571 Added the ability for an embedding application to receive a callback
6572 when V8 allocates (V8::AddMemoryAllocationCallback) or deallocates
6573 (V8::RemoveMemoryAllocationCallback) from the OS.
6575 Fixed several JSON bugs (including issue 855).
6577 Fixed memory overrun crash bug triggered during V8's tick-based
6580 Performance improvements on all platforms.
6583 2010-09-01: Version 2.4.0
6585 Fixed bug in Object.freeze and Object.seal when Array.prototype or
6586 Object.prototype are changed (issue 842).
6588 Updated Array.splice to follow Safari and Firefox when called
6589 with zero arguments.
6591 Fixed a missing live register when breaking at keyed loads on ARM.
6593 Performance improvements on all platforms.
6596 2010-08-25: Version 2.3.11
6598 Fixed bug in RegExp related to copy-on-write arrays.
6600 Refactored tools/test.py script, including the introduction of
6601 VARIANT_FLAGS that allows specification of sets of flags with which
6602 all tests should be run.
6604 Fixed a bug in the handling of debug breaks in CallIC.
6606 Performance improvements on all platforms.
6609 2010-08-23: Version 2.3.10
6611 Fixed bug in bitops on ARM.
6613 Build fixes for unusual compilers.
6615 Track high water mark for RWX memory.
6617 Performance improvements on all platforms.
6620 2010-08-18: Version 2.3.9
6622 Fixed compilation for ARMv4 on OpenBSD/FreeBSD.
6624 Removed specialized handling of GCC 4.4 (issue 830).
6626 Fixed DST cache to take into account the suspension of DST in
6627 Egypt during the 2010 Ramadan (issue http://crbug.com/51855).
6629 Performance improvements on all platforms.
6632 2010-08-16: Version 2.3.8
6634 Fixed build with strict aliasing on GCC 4.4 (issue 463).
6636 Fixed issue with incorrect handling of custom valueOf methods on
6637 string wrappers (issue 760).
6639 Fixed compilation for ARMv4 (issue 590).
6641 Improved performance.
6644 2010-08-11: Version 2.3.7
6646 Reduced size of heap snapshots produced by heap profiler (issue 783).
6648 Introduced v8::Value::IsRegExp method.
6650 Fixed CPU profiler crash in start / stop sequence when non-existent
6651 name is passed (issue http://crbug.com/51594).
6653 Introduced new indexed property query callbacks API (issue 816). This
6654 API is guarded by USE_NEW_QUERY_CALLBACK define and is disabled
6657 Removed support for object literal get/set with number/string
6660 Fixed handling of JSObject::elements in CalculateNetworkSize
6663 Allowed compiling with strict aliasing enabled on GCC 4.4 (issue 463).
6666 2010-08-09: Version 2.3.6
6668 RegExp literals create a new object every time they are evaluated
6671 Object.seal and Object.freeze return the modified object (issue 809).
6673 Fixed building using GCC 4.4.4.
6676 2010-08-04: Version 2.3.5
6678 Added support for ES5 property names. Object initialisers and
6679 dot-notation property access now allows keywords. Also allowed
6680 non-identifiers after "get" or "set" in an object initialiser.
6682 Randomized the addresses of allocated executable memory on Windows.
6685 2010-08-02: Version 2.3.4
6687 Fixed problems in implementation of ES5 function.prototype.bind.
6689 Fixed error when using apply with arguments object on ARM (issue 784).
6691 Added setting of global flags to debugger protocol.
6693 Fixed an error affecting cached results of sin and cos (issue 792).
6695 Removed memory leak from a boundary case where V8 is not initialized.
6697 Fixed issue where debugger could set breakpoints outside the body
6700 Fixed issue in debugger when using both live edit and step in features.
6702 Added Number-letter (Nl) category to Unicode tables. These characters
6703 can now be used in identifiers.
6705 Fixed an assert failure on X64 (issue 806).
6707 Performance improvements on all platforms.
6710 2010-07-26: Version 2.3.3
6712 Fixed error when building the d8 shell in a fresh checkout.
6714 Implemented Function.prototype.bind (ES5 15.3.4.5).
6716 Fixed an error in inlined stores on ia32.
6718 Fixed an error when setting a breakpoint at the end of a function
6719 that does not end with a newline character.
6721 Performance improvements on all platforms.
6724 2010-07-21: Version 2.3.2
6726 Fixed compiler warnings when building with LLVM.
6728 Fixed a bug with for-in applied to strings (issue 785).
6730 Performance improvements on all platforms.
6733 2010-07-19: Version 2.3.1
6735 Fixed compilation and linking with V8_INTERPRETED_REGEXP flag.
6737 Fixed bug related to code flushing while compiling a lazy
6738 compilable function (issue http://crbug.com/49099).
6740 Performance improvements on all platforms.
6743 2010-07-15: Version 2.3.0
6745 Added ES5 Object.seal and Object.isSealed.
6747 Added debugger API for scheduling debugger commands from a
6751 2010-07-14: Version 2.2.24
6753 Added API for capturing stack traces for uncaught exceptions.
6755 Fixed crash bug when preparsing from a non-external V8 string
6758 Fixed JSON.parse bug causing input not to be converted to string
6761 Added ES5 Object.freeze and Object.isFrozen.
6763 Performance improvements on all platforms.
6766 2010-07-07: Version 2.2.23
6768 API change: Convert Unicode code points outside the basic multilingual
6769 plane to the replacement character. Previous behavior was to silently
6770 truncate the value to 16 bits.
6772 Fixed crash: handle all flat string types in regexp replace.
6774 Prevent invalid pre-parsing data passed in through the API from
6777 Performance improvements on all platforms.
6780 2010-07-05: Version 2.2.22
6782 Added ES5 Object.isExtensible and Object.preventExtensions.
6784 Enabled building V8 as a DLL.
6786 Fixed a bug in date code where -0 was not interpreted as 0
6789 Performance improvements on all platforms.
6792 2010-06-30: Version 2.2.21
6794 Fixed bug in externalizing some ASCII strings (Chromium issue 47824).
6796 Updated JSON.stringify to floor the space parameter (issue 753).
6798 Updated the Mozilla test expectations to the newest version.
6800 Updated the ES5 Conformance Test expectations to the latest version.
6802 Updated the V8 benchmark suite.
6804 Provide actual breakpoints locations in response to setBreakpoint
6805 and listBreakpoints requests.
6808 2010-06-28: Version 2.2.20
6810 Fixed bug with for-in on x64 platform (issue 748).
6812 Fixed crash bug on x64 platform (issue 756).
6814 Fixed bug in Object.getOwnPropertyNames. (chromium issue 41243).
6816 Fixed a bug on ARM that caused the result of 1 << x to be
6817 miscalculated for some inputs.
6819 Performance improvements on all platforms.
6822 2010-06-23: Version 2.2.19
6824 Fixed bug that causes the build to break when profillingsupport=off
6827 Added expose-externalize-string flag for testing extensions.
6829 Resolve linker issues with using V8 as a DLL causing a number of
6830 problems with unresolved symbols.
6832 Fixed build failure for cctests when ENABLE_DEBUGGER_SUPPORT is not
6835 Performance improvements on all platforms.
6838 2010-06-16: Version 2.2.18
6840 Added API functions to retrieve information on indexed properties
6841 managed by the embedding layer. Fixes bug 737.
6843 Made ES5 Object.defineProperty support array elements. Fixes bug 619.
6845 Added heap profiling to the API.
6847 Removed old named property query from the API.
6849 Incremental performance improvements.
6852 2010-06-14: Version 2.2.17
6854 Improved debugger support for stepping out of functions.
6856 Incremental performance improvements.
6859 2010-06-09: Version 2.2.16
6861 Removed the SetExternalStringDiposeCallback API. Changed the
6862 disposal of external string resources to call a virtual Dispose
6863 method on the resource.
6865 Added support for more precise break points when debugging and
6868 Memory usage improvements on all platforms.
6871 2010-06-07: Version 2.2.15
6873 Added an API to control the disposal of external string resources.
6875 Added missing initialization of a couple of variables which makes
6876 some compilers complaint when compiling with -Werror.
6878 Improved performance on all platforms.
6881 2010-06-02: Version 2.2.14
6883 Fixed a crash in code generated for String.charCodeAt.
6885 Fixed a compilation issue with some GCC versions (issue 727).
6887 Performance optimizations on x64 and ARM platforms.
6890 2010-05-31: Version 2.2.13
6892 Implemented Object.getOwnPropertyDescriptor for element indices and
6893 strings (issue 599).
6895 Fixed bug for windows 64 bit C calls from generated code.
6897 Added new scons flag unalignedaccesses for arm builds.
6899 Performance improvements on all platforms.
6902 2010-05-26: Version 2.2.12
6904 Allowed accessors to be defined on objects rather than just object
6907 Changed the ScriptData API.
6910 2010-05-21: Version 2.2.11
6912 Fixed crash bug in liveedit on 64 bit.
6914 Use 'full compiler' when debugging is active. This should increase
6915 the density of possible break points, making single step more fine
6916 grained. This will only take effect for functions compiled after
6917 debugging has been started, so recompilation of all functions is
6918 required to get the full effect. IA32 and x64 only for now.
6920 Misc. fixes to the Solaris build.
6922 Added new flags --print-cumulative-gc-stat and --trace-gc-nvp.
6924 Added filtering of CPU profiles by security context.
6926 Fixed crash bug on ARM when running without VFP2 or VFP3.
6928 Incremental performance improvements in all backends.
6931 2010-05-17: Version 2.2.10
6933 Performance improvements in the x64 and ARM backends.
6936 2010-05-10: Version 2.2.9
6938 Allowed Object.create to be called with a function (issue 697).
6940 Fixed bug with Date.parse returning a non-NaN value when called on a
6941 non date string (issue 696).
6943 Allowed unaligned memory accesses on ARM targets that support it (by
6944 Subrato K De of CodeAurora <subratokde@codeaurora.org>).
6946 C++ API for retrieving JavaScript stack trace information.
6949 2010-05-05: Version 2.2.8
6951 Performance improvements in the x64 and ARM backends.
6954 2010-05-03: Version 2.2.7
6956 Added support for ES5 date time string format to Date.parse.
6958 Performance improvements in the x64 backend.
6961 2010-04-28: Version 2.2.6
6963 Added "amd64" as recognized architecture in scons build script
6964 (by Ryan Dahl <coldredlemur@gmail.com>).
6966 Fixed bug in String search and replace with very simple RegExps.
6968 Fixed bug in RegExp containing "\b^".
6970 Performance improvements on all platforms.
6973 2010-04-26: Version 2.2.5
6975 Various performance improvements (especially for ARM and x64)
6977 Fixed bug in CPU profiling (http://crbug.com/42137)
6979 Fixed a bug with the natives cache.
6981 Fixed two bugs in the ARM code generator that can cause
6984 Fixed a bug that may cause a wrong result for shift operations.
6987 2010-04-21: Version 2.2.4
6989 Fixed warnings on arm on newer GCC versions.
6991 Fixed a number of minor bugs.
6993 Performance improvements on all platforms.
6996 2010-04-14: Version 2.2.3
6998 Added stack command and mem command to ARM simulator debugger.
7000 Fixed scons snapshot and ARM build, and Windows X64 build issues.
7002 Performance improvements on all platforms.
7005 2010-04-12: Version 2.2.2
7007 Introduced new profiler API.
7009 Fixed random number generator to produce full 32 random bits.
7012 2010-04-06: Version 2.2.1
7014 Debugger improvements.
7019 2010-03-29: Version 2.2.0
7021 Fixed a few minor bugs.
7023 Performance improvements for string operations.
7026 2010-03-26: Version 2.1.10
7028 Fixed scons build issues.
7030 Fixed a couple of minor bugs.
7033 2010-03-25: Version 2.1.9
7035 Added API support for reattaching a global object to a context.
7037 Extended debugger API with access to the internal debugger context.
7039 Fixed Chromium crashes (issues http://crbug.com/39128 and
7040 http://crbug.com/39160)
7043 2010-03-24: Version 2.1.8
7045 Added fine-grained garbage collection callbacks to the API.
7047 Performance improvements on all platforms.
7050 2010-03-22: Version 2.1.7
7054 Fixed a bug where __proto__ was sometimes enumerated (issue 646).
7056 Performance improvements for arithmetic operations.
7058 Performance improvements for string operations.
7060 Print script name and line number information in stack trace.
7063 2010-03-17: Version 2.1.6
7065 Performance improvements for arithmetic operations.
7067 Performance improvements for string operations.
7070 2010-03-10: Version 2.1.4
7072 Fixed code cache lookup for keyed IC's (issue http://crbug.com/37853).
7074 Performance improvements on all platforms.
7077 2010-03-10: Version 2.1.3
7079 Added API method for context-disposal notifications.
7081 Added API method for accessing elements by integer index.
7083 Added missing implementation of Uint32::Value and Value::IsUint32
7086 Added IsExecutionTerminating API method.
7088 Disabled strict aliasing for GCC 4.4.
7090 Fixed string-concatenation bug (issue 636).
7092 Performance improvements on all platforms.
7095 2010-02-23: Version 2.1.2
7097 Fixed a crash bug caused by wrong assert.
7099 Fixed a bug with register names on 64-bit V8 (issue 615).
7101 Performance improvements on all platforms.
7104 2010-02-19: Version 2.1.1
7106 [ES5] Implemented Object.defineProperty.
7108 Improved profiler support.
7110 Added SetPrototype method in the public V8 API.
7112 Added GetScriptOrigin and GetScriptLineNumber methods to Function
7115 Performance improvements on all platforms.
7118 2010-02-03: Version 2.1.0
7120 Values are now always wrapped in objects when used as a receiver.
7123 [ES5] Implemented Object.getOwnPropertyNames.
7125 [ES5] Restrict JSON.parse to only accept strings that conforms to the
7128 Improvement of debugger agent (issue 549 and 554).
7130 Fixed problem with skipped stack frame in profiles (issue 553).
7132 Solaris support by Erich Ocean <erich.ocean@me.com> and Ryan Dahl
7133 <ry@tinyclouds.org>.
7135 Fixed a bug that Math.round() returns incorrect results for huge
7138 Fixed enumeration order for objects created from some constructor
7139 functions (isue http://crbug.com/3867).
7141 Fixed arithmetic on some integer constants (issue 580).
7143 Numerous performance improvements including porting of previous IA-32
7144 optimizations to x64 and ARM architectures.
7147 2010-01-14: Version 2.0.6
7149 Added ES5 Object.getPrototypeOf, GetOwnPropertyDescriptor,
7150 GetOwnProperty, FromPropertyDescriptor.
7152 Fixed Mac x64 build errors.
7154 Improved performance of some math and string operations.
7156 Improved performance of some regexp operations.
7158 Improved performance of context creation.
7160 Improved performance of hash tables.
7163 2009-12-18: Version 2.0.5
7165 Extended to upper limit of map space to allow for 7 times as many map
7166 to be allocated (issue 524).
7168 Improved performance of code using closures.
7170 Improved performance of some binary operations involving doubles.
7173 2009-12-16: Version 2.0.4
7175 Added ECMAScript 5 Object.create.
7177 Improved performance of Math.max and Math.min.
7179 Optimized adding of strings on 64-bit platforms.
7181 Improved handling of external strings by using a separate table
7182 instead of weak handles. This improves garbage collection
7183 performance and uses less memory.
7185 Changed code generation for object and array literals in toplevel
7186 code to be more compact by doing more work in the runtime.
7188 Fixed a crash bug triggered when garbage collection happened during
7189 generation of a callback load inline cache stub.
7191 Fixed crash bug sometimes triggered when local variables shadowed
7192 parameters in functions that used the arguments object.
7195 2009-12-03: Version 2.0.3
7197 Optimized handling and adding of strings, for-in and Array.join.
7199 Heap serialization is now non-destructive.
7201 Improved profiler support with information on time spend in C++
7202 callbacks registered through the API.
7204 Added commands to the debugger protocol for starting/stopping
7207 Enabled the non-optimizing compiler for top-level code.
7209 Changed the API to only allow strings to be set as data objects on
7210 Contexts and scripts to avoid potentially keeping global objects
7211 around for too long (issue 528).
7213 OpenBSD support patch by Peter Valchev <pvalchev@gmail.com>.
7218 2009-11-24: Version 2.0.2
7220 Improved profiler support.
7222 Fixed bug that broke compilation of d8 with readline support.
7225 2009-11-20: Version 2.0.1
7227 Fixed crash bug in String.prototype.replace.
7229 Reverted a change which caused Chromium interactive ui test
7233 2009-11-18: Version 2.0.0
7235 Added support for VFP on ARM.
7237 Added TryCatch::ReThrow method to the API.
7239 Reduced the size of snapshots and improved the snapshot load time.
7241 Improved heap profiler support.
7243 64-bit version now supported on Windows.
7245 Fixed a number of debugger issues.
7250 2009-10-29: Version 1.3.18
7252 Reverted a change which caused crashes in RegExp replace.
7254 Reverted a change which caused Chromium ui_tests failure.
7257 2009-10-28: Version 1.3.17
7259 Added API method to get simple heap statistics.
7261 Improved heap profiler support.
7263 Fixed the implementation of the resource constraint API so it
7264 works when using snapshots.
7266 Fixed a number of issues in the Windows 64-bit version.
7268 Optimized calls to API getters.
7270 Added valgrind notification on code modification to the 64-bit version.
7272 Fixed issue where we logged shared library addresses on Windows at
7273 startup and never used them.
7276 2009-10-16: Version 1.3.16
7278 X64: Convert smis to holding 32 bits of payload.
7280 Introduced v8::Integer::NewFromUnsigned method.
7282 Added missing null check in Context::GetCurrent.
7284 Added trim, trimLeft and trimRight methods to String
7285 Patch by Jan de Mooij <jandemooij@gmail.com>
7287 Implement ES5 Array.isArray
7288 Patch by Jan de Mooij <jandemooij@gmail.com>
7290 Skip access checks for hidden properties.
7292 Added String::Concat(Handle<String> left, Handle<String> right) to the
7295 Fixed GYP-based builds of V8.
7298 2009-10-07: Version 1.3.15
7300 Expanded the maximum size of the code space to 512MB for 64-bit mode.
7302 Fixed a crash bug happening when starting profiling (issue
7303 http://crbug.com/23768).
7306 2009-10-07: Version 1.3.14
7308 Added GetRealNamedProperty to the API to lookup real properties
7309 located on the object or in the prototype chain skipping any
7312 Fixed the stack limits setting API to work correctly with threads. The
7313 stack limit now needs to be set to each thread thich is used with V8.
7315 Removed the high-priority flag from IdleNotification()
7317 Ensure V8 is initialized before locking and unlocking threads.
7319 Implemented a new JavaScript minifier for compressing the source of
7320 the built-in JavaScript. This removes non-Open Source code from Douglas
7321 Crockford from the project.
7323 Added a missing optimization in StringCharAt.
7325 Fixed some flaky socket tests.
7327 Change by Alexander Botero-Lowry to fix profiler sampling on FreeBSD
7330 Fixed memory leaks in the thread management code.
7332 Fixed the result of assignment to a pixel array. The assigned value
7335 Error reporting for invalid left-hand sides in for-in statements, pre-
7336 and postfix count expressions, and assignments now matches the JSC
7337 behavior in Safari 4.
7339 Follow the spec in disallowing function declarations without a name.
7341 Always allocate code objects within a 2 GB range. On x64 architecture
7342 this is used to use near calls (32-bit displacement) in Code objects.
7344 Optimized array construction ported to x64 and ARM architectures.
7346 [ES5] Changed Object.keys to return strings for element indices.
7349 2009-09-23: Version 1.3.13
7351 Fixed uninitialized memory problem.
7353 Improved heap profiler support.
7356 2009-09-22: Version 1.3.12
7358 Changed behavior of |function|.toString() on built-in functions to
7359 be compatible with other implementations. Patch by Jan de Mooij.
7361 Added Object::IsDirty in the API.
7363 Optimized array construction; it is now handled purely in native
7366 [ES5] Made properties of the arguments array enumerable.
7368 [ES5] Added test suite adapter for the es5conform test suite.
7370 [ES5] Added Object.keys function.
7373 2009-09-15: Version 1.3.11
7375 Fixed crash in error reporting during bootstrapping.
7377 Optimized generated IA32 math code by using SSE2 instructions when
7380 Implemented missing pieces of debugger infrastructure on ARM. The
7381 debugger is now fully functional on ARM.
7383 Made 'hidden' the default visibility for gcc.
7386 2009-09-09: Version 1.3.10
7388 Fixed profiler on Mac in 64-bit mode.
7390 Optimized creation of objects from simple constructor functions on
7393 Fixed a number of debugger issues.
7395 Reduced the amount of memory consumed by V8.
7398 2009-09-02: Version 1.3.9
7400 Optimized stack guard checks on ARM.
7402 Optimized API operations by inlining more in the API.
7404 Optimized creation of objects from simple constructor functions.
7406 Enabled a number of missing optimizations in the 64-bit port.
7408 Implemented native-code support for regular expressions on ARM.
7410 Stopped using the 'sahf' instruction on 64-bit machines that do
7413 Fixed a bug in the support for forceful termination of JavaScript
7417 2009-08-26: Version 1.3.8
7419 Changed the handling of idle notifications to allow idle
7420 notifications when V8 has not yet been initialized.
7422 Fixed ARM simulator compilation problem on Windows.
7425 2009-08-25: Version 1.3.7
7427 Reduced the size of generated code on ARM platforms by reducing
7428 the size of constant pools.
7430 Changed build files to not include the 'ENV' user environment
7431 variable in the build environment.
7433 Changed the handling of idle notifications.
7436 2009-08-21: Version 1.3.6
7438 Added support for forceful termination of JavaScript execution.
7440 Added low memory notification to the API. The embedding host can signal
7441 a low memory situation to V8.
7443 Changed the handling of global handles (persistent handles in the API
7444 sense) to avoid issues regarding allocation of new global handles
7445 during weak handle callbacks.
7447 Changed the growth policy of the young space.
7449 Fixed a GC issue introduced in version 1.3.5.
7452 2009-08-19: Version 1.3.5
7454 Optimized initialization of some arrays in the builtins.
7456 Fixed mac-nm script to support filenames with spaces.
7458 Support for using the V8 profiler when V8 is embedded in a Windows DLL.
7460 Changed typeof RegExp from 'object' to 'function' for compatibility.
7461 Fixed bug where regexps were not callable across contexts.
7463 Added context independent script compilation to the API.
7465 Added API call to get the stack trace for an exception.
7467 Added API for getting object mirrors.
7469 Made sure that SSE3 instructions are used whenever possible even when
7470 running off a snapshot generated without using SSE3 instructions.
7472 Tweaked the handling of the initial size and growth policy of the heap.
7474 Added native code generation for RegExp to 64-bit version.
7476 Added JavaScript debugger support to 64-bit version.
7479 2009-08-13: Version 1.3.4
7481 Added a readline() command to the d8 shell.
7483 Fixed bug in json parsing.
7485 Added idle notification to the API and reduced memory on idle
7489 2009-08-12: Version 1.3.3
7491 Fixed issue 417: incorrect %t placeholder expansion.
7493 Added .gitignore file similar to Chromium's one.
7495 Fixed SConstruct file to build with new logging code for Android.
7497 API: added function to find instance of template in prototype
7498 chain. Inlined Object::IsInstanceOf.
7500 Land change to notify valgrind when we modify code on x86.
7502 Added api call to determine whether a string can be externalized.
7504 Added a write() command to d8.
7507 2009-08-05: Version 1.3.2
7509 Started new compiler infrastructure for two-pass compilation using a
7510 control flow graph constructed from the AST.
7512 Profiler stack sampling for X64.
7514 Safe handling of NaN to Posix platform-dependent time functions.
7516 Added a new profiler control API to unify controlling various aspects
7522 2009-07-30: Version 1.3.1
7524 Speed improvements to accessors and interceptors.
7526 Added support for capturing stack information on custom errors.
7528 Added support for morphing an object into a pixel array where its
7529 indexed properties are stored in an external byte array. Values written
7530 are always clamped to the 0..255 interval.
7532 Profiler on x64 now handles C/C++ functions from shared libraries.
7534 Changed the debugger to avoid stepping into function.call/apply if the
7535 function is a built-in.
7537 Initial implementation of constructor heap profile for JS objects.
7539 More fine grained control of profiling aspects through the API.
7541 Optimized the called as constructor check for API calls.
7544 2009-07-27: Version 1.3.0
7546 Allowed RegExp objects to be called as functions (issue 132).
7548 Fixed issue where global property cells would escape after
7549 detaching the global object; see http://crbug.com/16276.
7551 Added support for stepping into setters and getters in the
7554 Changed the debugger to avoid stopping in its own JavaScript code
7555 and in the code of built-in functions.
7557 Fixed issue 345 by avoiding duplicate escaping labels.
7559 Fixed ARM code generator crash in short-circuited boolean
7560 expressions and added regression tests.
7562 Added an external allocation limit to avoid issues where small V8
7563 objects would hold on to large amounts of external memory without
7564 causing garbage collections.
7566 Finished more of the inline caching stubs for x64 targets.
7569 2009-07-13: Version 1.2.14
7571 Added separate paged heap space for global property cells and
7572 avoid updating the write barrier when storing into them.
7574 Improved peep-hole optimization on ARM platforms by not emitting
7575 unnecessary debug information.
7577 Re-enabled ICs for loads and calls that skip a global object
7578 during lookup through the prototype chain.
7580 Allowed access through global proxies to use ICs.
7585 2009-07-09: Version 1.2.13
7587 Fixed issue 397, issue 398, and issue 399.
7589 Added support for breakpoint groups.
7591 Fixed bugs introduced with the new global object representation.
7593 Fixed a few bugs in the ARM code generator.
7596 2009-07-06: Version 1.2.12
7598 Added stack traces collection to Error objects accessible through
7599 the e.stack property.
7601 Changed RegExp parser to use a recursive data structure instead of
7602 stack-based recursion.
7604 Optimized Date object construction and string concatenation.
7606 Improved performance of div, mod, and mul on ARM platforms.
7609 2009-07-02: Version 1.2.11
7611 Improved performance on IA-32 and ARM.
7613 Fixed profiler sampler implementation on Mac OS X.
7615 Changed the representation of global objects to improve
7616 performance of adding a lot of new properties.
7619 2009-06-29: Version 1.2.10
7621 Improved debugger support.
7623 Fixed bug in exception message reporting (issue 390).
7625 Improved overall performance.
7628 2009-06-23: Version 1.2.9
7630 Improved math performance on ARM.
7632 Fixed profiler name-inference bug.
7634 Fixed handling of shared libraries in the profiler tick processor
7637 Fixed handling of tests that time out in the test scripts.
7639 Fixed compilation on MacOS X version 10.4.
7641 Fixed two bugs in the regular expression engine.
7643 Fixed a bug in the string type inference.
7645 Fixed a bug in the handling of 'constant function' properties.
7647 Improved overall performance.
7650 2009-06-16: Version 1.2.8
7652 Optimized math on ARM platforms.
7654 Fixed two crash bugs in the handling of getters and setters.
7656 Improved the debugger support by adding scope chain information.
7658 Improved the profiler support by compressing log data transmitted
7661 Improved overall performance.
7664 2009-06-08: Version 1.2.7
7666 Improved debugger and profiler support.
7668 Reduced compilation time by improving the handling of deferred
7671 Optimized interceptor accesses where the property is on the object
7672 on which the interceptors is attached.
7674 Fixed compilation problem on GCC 4.4 by changing the stack
7675 alignment to 16 bytes.
7677 Fixed handle creation to follow stric aliasing rules.
7679 Fixed compilation on FreeBSD.
7681 Introduced API for forcing the deletion of a property ignoring
7682 interceptors and attributes.
7685 2009-05-29: Version 1.2.6
7687 Added a histogram recording hit rates at different levels of the
7690 Added stack overflow check for the RegExp analysis phase. Previously a
7691 very long regexp graph could overflow the stack with recursive calls.
7693 Use a dynamic buffer when collecting log events in memory.
7695 Added start/stop events to the profiler log.
7697 Fixed infinite loop which could happen when setting a debug break while
7698 executing a RegExp compiled to native code.
7700 Fixed handling of lastIndexOf called with negative index (issue 351).
7702 Fixed irregular crash in profiler test (issue 358).
7704 Fixed compilation issues with some versions of gcc.
7707 2009-05-26: Version 1.2.5
7709 Fixed bug in initial boundary check for Boyer-Moore text
7712 Fixed compilation issues with MinGW and gcc 4.3+ and added support
7713 for armv7 and cortex-a8 architectures. Patches by Lei Zhang and
7716 Added a script cache to the debugger.
7718 Optimized compilation performance by improving internal data
7719 structures and avoiding expensive property load optimizations for
7720 code that's infrequently executed.
7722 Exposed the calling JavaScript context through the static API
7723 function Context::GetCalling().
7726 2009-05-18: Version 1.2.4
7728 Improved performance of floating point number allocation for ARM
7731 Fixed crash when using the instanceof operator on functions with
7732 number values in their prototype chain (issue 341).
7734 Optimized virtual frame operations in the code generator to speed
7735 up compilation time and allocated the frames in the zone.
7737 Made the representation of virtual frames and jump targets in the
7738 code generator much more compact.
7740 Avoided linear search for non-locals in scope code when resolving
7741 variables inside with and eval scopes.
7743 Optimized lexical scanner by dealing with whitespace as part of
7744 the token scanning instead of as a separate step before it.
7746 Changed the scavenging collector so that promoted objects do not
7747 reside in the old generation while their remembered set is being
7748 swept for pointers into the young generation.
7750 Fixed numeric overflow handling when compiling count operations.
7753 2009-05-11: Version 1.2.3
7755 Fixed bug in reporting of out-of-memory situations.
7757 Introduced hidden prototypes on certain builtin prototype objects
7758 such as String.prototype to emulate JSC's behavior of restoring
7759 the original function when deleting functions from those prototype
7762 Fixed crash bug in the register allocator.
7765 2009-05-04: Version 1.2.2
7767 Fixed bug in array sorting for sparse arrays (issue 326).
7769 Added support for adding a soname when building a shared library
7770 on Linux (issue 151).
7772 Fixed bug caused by morphing internal ASCII strings to external
7773 two-byte strings. Slices over ASCII strings have to forward ASCII
7774 checks to the underlying buffer string.
7776 Allowed API call-as-function handlers to be called as
7779 Fixed a crash bug where an external string was disposed but a
7780 slice of the external string survived as a symbol.
7783 2009-04-27: Version 1.2.1
7785 Added EcmaScript 5 JSON object.
7787 Fixed bug in preemption support on ARM.
7790 2009-04-23: Version 1.2.0
7792 Optimized floating-point operations on ARM.
7794 Added a number of extensions to the debugger API.
7796 Changed the enumeration order for unsigned integer keys to always
7799 Added a "read" extension to the shell sample.
7801 Added support for Array.prototype.reduce and
7802 Array.prototype.reduceRight.
7804 Added an option to the SCons build to control Microsoft Visual C++
7805 link-time code generation.
7807 Fixed a number of bugs (in particular issue 315, issue 316,
7808 issue 317 and issue 318).
7811 2009-04-15: Version 1.1.10
7813 Fixed crash bug that occurred when loading a const variable in the
7816 Allowed using with and eval in registered extensions in debug mode
7817 by fixing bogus assert.
7819 Fixed the source position for function returns to enable the
7820 debugger to break there.
7823 2009-04-14: Version 1.1.9
7825 Made the stack traversal code in the profiler robust by avoiding
7826 to look into the heap.
7828 Added name inferencing for anonymous functions to facilitate
7829 debugging and profiling.
7831 Re-enabled stats timers in the developer shell (d8).
7833 Fixed issue 303 by avoiding to shortcut cons-symbols.
7836 2009-04-11: Version 1.1.8
7838 Changed test-debug/ThreadedDebugging to be non-flaky (issue 96).
7840 Fixed step-in handling for Function.prototype.apply and call in
7841 the debugger (issue 269).
7843 Fixed v8::Object::DeleteHiddenValue to not bail out when there
7844 are no hidden properties.
7846 Added workaround for crash bug, where external symbol table
7847 entries with deleted resources would lead to NPEs when looking
7848 up in the symbol table.
7851 2009-04-07: Version 1.1.7
7853 Added support for easily importing additional environment
7854 variables into the SCons build.
7856 Optimized strict equality checks.
7858 Fixed crash in indexed setters on objects without a corresponding
7861 Re-enabled script compilation cache.
7864 2009-04-01: Version 1.1.6
7866 Reverted an unsafe code generator change.
7869 2009-04-01: Version 1.1.5
7871 Fixed bug that caused function literals to not be optimized as
7872 much as other functions.
7874 Improved profiler support.
7876 Fixed a crash bug in connection with debugger unloading.
7878 Fixed a crash bug in the code generator caused by losing the
7879 information that a frame element was copied.
7881 Fixed an exception propagation bug that could cause non-null
7882 return values when exceptions were thrown.
7885 2009-03-30: Version 1.1.4
7887 Optimized String.prototype.match.
7889 Improved the stack information in profiles.
7891 Fixed bug in ARM port making it possible to compile the runtime
7892 system for thumb mode again.
7894 Implemented a number of optimizations in the code generator.
7896 Fixed a number of memory leaks in tests.
7898 Fixed crash bug in connection with script source code and external
7902 2009-03-24: Version 1.1.3
7904 Fixed assertion failures in compilation of loop conditions.
7906 Removed STL dependency from developer shell (d8).
7908 Added infrastructure for protecting the V8 heap from corruption
7909 caused by memory modifications from the outside.
7912 2009-03-24: Version 1.1.2
7914 Improved frame merge code generated by the code generator.
7916 Optimized String.prototype.replace.
7918 Implemented __defineGetter__ and __defineSetter__ for properties
7919 with integer keys on non-array objects.
7921 Improved debugger and profiler support.
7923 Fixed a number of portability issues to allow compilation for
7924 smaller ARM devices.
7926 Exposed object cloning through the API.
7928 Implemented hidden properties. This is used to expose an identity
7929 hash for objects through the API.
7931 Implemented restarting of regular expressions if their input
7932 string changes representation during preemption.
7934 Fixed a code generator bug that could cause assignments in loops
7935 to be ignored if using continue to break out of the loop (issue
7939 2009-03-12: Version 1.1.1
7941 Fixed an assertion in the new compiler to take stack overflow
7942 exceptions into account.
7944 Removed exception propagation code that could cause crashes.
7946 Fixed minor bug in debugger line number computations.
7948 8-byte align the C stack on Linux and Windows to speed up floating
7952 2009-03-12: Version 1.1.0
7954 Improved code generation infrastructure by doing simple register
7955 allocation and constant folding and propagation.
7957 Optimized regular expression matching by avoiding to create
7958 intermediate string arrays and by flattening nested array
7959 representations of RegExp data.
7961 Traverse a few stack frames when recording profiler samples to
7962 include partial call graphs in the profiling output.
7964 Added support for using OProfile to profile generated code.
7966 Added remote debugging support to the D8 developer shell.
7968 Optimized creation of nested literals like JSON objects.
7970 Fixed a bug in garbage collecting unused maps and turned it on by
7971 default (--collect-maps).
7973 Added support for running tests under Valgrind.
7976 2009-02-27: Version 1.0.3
7978 Optimized double-to-integer conversions in bit operations by using
7979 SSE3 instructions if available.
7981 Optimized initialization sequences that store to multiple
7982 properties of the same object.
7984 Changed the D8 debugger frontend to use JSON messages.
7986 Force garbage collections when disposing contexts.
7988 Align code objects at 32-byte boundaries.
7991 2009-02-25: Version 1.0.2
7993 Improved profiling support by performing simple call stack
7994 sampling for ticks and by fixing a bug in the logging of code
7997 Fixed a number of debugger issues.
7999 Optimized code that uses eval.
8001 Fixed a couple of bugs in the regular expression engine.
8003 Reduced the size of generated code for certain regular expressions.
8005 Removed JSCRE completely.
8007 Fixed issue where test could not be run if there was a dot in the
8011 2009-02-13: Version 1.0.1
8013 Fixed two crash-bugs in irregexp (issue 231 and 233).
8015 Fixed a number of minor bugs (issue 87, 227 and 228).
8017 Added support for morphing strings to external strings on demand
8018 to avoid having to create copies in the embedding code.
8020 Removed experimental support for external symbol callbacks.
8023 2009-02-09: Version 1.0.0
8025 Fixed crash-bug in the code generation for case independent 16 bit
8028 Made shells more robust in the presence of string conversion
8029 failures (issue 224).
8031 Fixed a potential infinite loop when attempting to resolve
8034 Miscellaneous fixes to the new regular expression engine.
8036 Reduced binary by stripping unneeded text from JavaScript library and
8037 minifying some JavaScript files.
8040 2009-01-27: Version 0.4.9
8042 Enabled new regular expression engine.
8044 Made a number of changes to the debugger protocol.
8046 Fixed a number of bugs in the preemption support.
8048 Added -p option to the developer shell to run files in parallel
8051 Fixed a number of minor bugs (including issues 176, 187, 189, 192,
8054 Fixed a number of bugs in the serialization/deserialization
8055 support for the ARM platform.
8058 2009-01-19: Version 0.4.8.1
8060 Minor patch to debugger support.
8063 2009-01-16: Version 0.4.8
8065 Fixed string length bug on ARM (issue 171).
8067 Made most methods in the API const.
8069 Optimized object literals by improving data locality.
8071 Fixed bug that caused incomplete functions to be cached in case of
8072 stack overflow exceptions.
8074 Fixed bugs that caused catch variables and variables introduced by
8075 eval to behave incorrectly when using accessors (issues 186, 190
8079 2009-01-06: Version 0.4.7
8081 Minor bugfixes and optimizations.
8083 Added command line debugger to D8 shell.
8085 Fixed subtle bug that caused the wrong 'this' to be used when
8086 calling a caught function in a catch clause.
8088 Inline array loads within loops directly in the code instead of
8089 always calling a stub.
8092 2008-12-11: Version 0.4.6
8094 Fixed exception reporting bug where certain exceptions were
8095 incorrectly reported as uncaught.
8097 Improved the memory allocation strategy used during compilation to
8098 make running out of memory when compiling huge scripts less
8101 Optimized String.replace by avoiding the construction of certain
8104 Fixed bug in code generation for large switch statements on ARM.
8106 Fixed bug that caused V8 to change the global object template
8107 passed in by the user.
8109 Changed the API for creating object groups used during garbage
8110 collection. Entire object groups are now passed to V8 instead of
8111 individual members of the groups.
8114 2008-12-03: Version 0.4.5
8116 Added experimental API support for allocating V8 symbols as
8119 Fixed bugs in debugging support on ARM.
8121 Changed eval implementation to correctly detect whether or not a
8122 call to eval is aliased.
8124 Fixed bug caused by a combination of the compilation cache and
8125 dictionary probing in native code. The bug caused us to sometimes
8126 call functions that had not yet been compiled.
8128 Added platform support for FreeBSD.
8130 Added support for building V8 on Windows with either the shared or
8131 static version of MSVCRT
8133 Added the v8::jscre namespace around the jscre functions to avoid
8134 link errors (duplicate symbols) when building Google Chrome.
8136 Added support for calling a JavaScript function with the current
8137 debugger execution context as its argument to the debugger
8140 Changed the type of names of counters from wchar_t to char.
8142 Changed the Windows system call used to compute daylight savings
8143 time. The system call that we used to use became four times
8144 slower on WinXP SP3.
8146 Added support in the d8 developer shell for memory-mapped counters
8147 and added a stats-viewer tool.
8149 Fixed bug in upper/lower case mappings (issue 149).
8152 2008-11-17: Version 0.4.4
8154 Reduced code size by using shorter instruction encoding when
8157 Added a --help option to the shell sample and to the d8 shell.
8159 Added visual studio project files for building the ARM simulator.
8161 Fixed a number of ARM simulator issues.
8163 Fixed bug in out-of-memory handling on ARM.
8165 Implemented shell support for passing arguments to a script from
8168 Fixed bug in date code that made certain date functions return -0
8169 instead of 0 for dates before the epoch.
8171 Restricted applications of eval so it can only be used in the
8172 context of the associated global object.
8174 Treat byte-order marks as whitespace characters.
8177 2008-11-04: Version 0.4.3
8179 Added support for API accessors that prohibit overwriting by
8180 accessors defined in JavaScript code by using __defineGetter__ and
8183 Improved handling of conditionals in test status files.
8185 Introduced access control in propertyIsEnumerable.
8187 Improved performance of some string operations by caching
8188 information about the type of the string between operations.
8190 Fixed bug in fast-case code for switch statements that only have
8194 2008-10-30: Version 0.4.2
8196 Improved performance of Array.prototype.concat by moving the
8197 implementation to C++ (issue 123).
8199 Fixed heap growth policy to avoid growing old space to its maximum
8200 capacity before doing a garbage collection and fixed issue that
8201 would lead to artificial out of memory situations (issue 129).
8203 Fixed Date.prototype.toLocaleDateString to return the date in the
8204 same format as WebKit.
8206 Added missing initialization checks to debugger API.
8208 Added removing of unused maps during GC.
8211 2008-10-28: Version 0.4.1
8213 Added caching of RegExp data in compilation cache.
8215 Added Visual Studio project file for d8 shell.
8217 Fixed function call performance regression introduced in version
8218 0.4.0 when splitting the global object in two parts (issue 120).
8220 Fixed issue 131 by checking for empty handles before throwing and
8221 reporting exceptions.
8224 2008-10-23: Version 0.4.0
8226 Split the global object into two parts: The state holding global
8227 object and the global object proxy.
8229 Fixed bug that affected the value of an assignment to an element
8230 in certain cases (issue 116).
8232 Added GetPropertyNames functionality (issue 33) and extra Date
8233 functions (issue 77) to the API.
8235 Changed WeakReferenceCallback to take a Persistent<Value> instead
8236 of a Persistent<Object> (issue 101).
8238 Fixed issues with message reporting for exceptions in try-finally
8239 blocks (issues 73 and 75).
8241 Optimized flattening of strings and string equality checking.
8243 Improved Boyer-Moore implementation for faster indexOf operations.
8245 Added development shell (d8) which includes counters and
8248 Fixed problem with the receiver passed to functions called from
8252 2008-10-16: Version 0.3.5
8254 Improved string hash-code distribution by excluding bit-field bits
8257 Changed string search algorithm used in indexOf from KMP to
8260 Improved the generated code for the instanceof operator.
8262 Improved performance of slow-case string equality checks by
8263 specializing the code based on the string representation.
8265 Improve the handling of out-of-memory situations (issue 70).
8267 Improved performance of strict equality checks.
8269 Improved profiler output to make it easier to see anonymous
8272 Improved performance of slow-case keyed loads.
8274 Improved property access performance by allocating a number of
8275 properties in the front object.
8277 Changed the toString behavior on the built-in object constructors
8278 to print [native code] instead of the actual source. Some web
8279 applications do not like constructors with complex toString
8283 2008-10-06: Version 0.3.4
8285 Changed Array.prototype.sort to use quick sort.
8287 Fixed code generation issue where leaving a finally block with
8288 break or continue would accumulate elements on the expression
8291 Made sure that the name accessor on functions returns the expected
8292 names for builtin JavaScript functions and C++ callback functions.
8294 Added fast case code for extending the property storage array of
8297 Ported switch statement optimizations introduced in version 0.3.3
8298 to the ARM code generator.
8300 Allowed GCC to use strict-aliasing rules when compiling.
8302 Improved performance of arguments object allocation by taking care
8303 of arguments adaptor frames in the generated code.
8305 Updated the V8 benchmark suite to version 2.
8308 2008-09-25: Version 0.3.3
8310 Improved handling of relocation information to enable more
8311 peep-hole optimizations.
8313 Optimized switch statements where all labels are constant small
8316 Optimized String.prototype.indexOf for common cases.
8318 Fixed more build issues (issue 80).
8320 Fixed a couple of profiler issues.
8322 Fixed bug where the body of a function created using the Function
8323 constructor was not allowed to end with a single-line comment
8326 Improved handling of object literals by canonicalizing object
8327 literal maps. This will allow JSON objects with the same set of
8328 properties to share the same map making inline caching work better
8332 2008-09-17: Version 0.3.2
8334 Generalized the EvalCache into a CompilationCache and enabled it
8335 for scripts too. The current strategy is to retire all entries
8336 whenever a mark-sweep collection is started.
8338 Fixed bug where switch statements containing only a default case
8339 would lead to an unbalanced stack (issue 69).
8341 Fixed bug that made access to the function in a named function
8342 expression impossible in certain situations (issue 24).
8344 Fixed even more build issues.
8346 Optimized calling conventions on ARM. The conventions on ARM and
8349 Removed static initializers for flags and counters.
8351 Improved inline caching behavior for uncommon cases where lazily
8352 loading Date and RegExp code could force certain code paths go
8355 Removed arguments adaption for builtins written in C++. This
8356 makes Array.prototype.push and Array.prototype.pop slightly
8360 2008-09-11: Version 0.3.1
8362 Fixed a number of build issues.
8364 Fixed problem with missing I-cache flusing on ARM.
8366 Changed space layout in memory management by splitting up
8367 code space into old data space and code space.
8369 Added utf-8 conversion support to the API (issue 57).
8371 Optimized repeated calls to eval with the same strings. These
8372 repeated calls are common in web applications.
8374 Added Xcode project file.
8376 Optimized a couple of Array operation.
8378 Fixed parser bug by checking for end-of-string when parsing break
8379 and continue (issue 35).
8381 Fixed problem where asian characters were not categorized as
8384 Fixed bug that disallowed calling functions fetched from an array
8385 using a string as an array index (issue 32).
8387 Fixed bug where the internal field count on object templates were
8388 sometimes ignored (issue 54).
8390 Added -f option to the shell sample for compatibility with other
8393 Added source info to TryCatches in the API.
8395 Fixed problem where the seed for the random number generator was
8396 clipped in a double to unsigned int conversion.
8398 Fixed bug where cons string symbols were sometimes converted to
8399 non-symbol flat strings during GC.
8401 Fixed bug in error reporting when attempting to convert null to an
8405 2008-09-04: Version 0.3.0
8407 Added support for running tests on the ARM simulator.
8409 Fixed bug in the 'in' operator where negative indices were not
8412 Fixed build issues on gcc-4.3.1.
8414 Changed Date.prototype.toLocaleTimeString to not print the
8415 timezone part of the time.
8417 Renamed debug.h to v8-debug.h to reduce the risk of name conflicts
8421 2008-09-02: Version 0.2.5
8423 Renamed the top level directory 'public' to 'include'.
8425 Added 'env' option to the SCons build scripts to support
8426 overriding the ENV part of the build environment. This is mostly
8427 to support Windows builds in cases where SCons cannot find the
8428 correct paths to the Windows SDK, as these paths cannot be passed
8429 through shell environment variables.
8431 Enabled "Buffer Security Check" on for the Windows SCons build and
8432 added the linker option /OPT:ICF as an optimization.
8434 Added the V8 benchmark suite to the repository.
8437 2008-09-01: Version 0.2.4
8439 Included mjsunit JavaScript test suite and C++ unit tests.
8441 Changed the shell sample to not print the result of executing a
8442 script provided on the command line.
8444 Fixed issue when building samples on Windows using a shared V8
8445 library. Added visibility option on Linux build which makes the
8446 generated library 18% smaller.
8448 Changed build system to accept multiple build modes in one build
8449 and generate separate objects, libraries and executables for each
8452 Removed deferred negation optimization (a * -b => -(a * b)) since
8453 this visibly changes operand conversion order.
8455 Improved parsing performance by introducing stack guard in
8456 preparsing. Without a stack guard preparsing always bails out
8457 with stack overflow.
8459 Changed shell sample to take flags directly from the command-line.
8460 Added API call that implements this.
8462 Added load, quit and version functions to the shell sample so it's
8463 easier to run benchmarks and tests.
8465 Fixed issue with building samples and cctests on 64-bit machines.
8467 Fixed bug in the runtime system where the prototype chain was not
8468 always searched for a setter when setting a property that does not
8472 2008-08-14: Version 0.2.3
8474 Improved performance of garbage collection by moving the
8475 function that updates pointers during compacting collection
8476 into the updating visitor. This gives the compiler a better
8477 chance to inline and avoid a function call per (potential)
8480 Extended the shell sample with a --runtime-flags option.
8482 Added Visual Studio project files for the shell.cc and
8486 2008-08-13: Version 0.2.2
8488 Improved performance of garbage collection by changing the way
8489 we use the marking stack in the event of stack overflow during
8490 full garbage collection and by changing the way we mark roots.
8492 Cleaned up ARM version by removing top of stack caching and by
8493 introducing push/pop elimination.
8495 Cleaned up the way runtime functions are called to allow
8496 runtime calls with no arguments.
8498 Changed Windows build options to make sure that exceptions are
8499 disabled and that optimization flags are enabled.
8501 Added first version of Visual Studio project files.
8504 2008-08-06: Version 0.2.1
8506 Improved performance of unary addition by avoiding runtime calls.
8508 Fixed the handling of '>' and '<=' to use right-to-left conversion
8509 and left-to-right evaluation as specified by ECMA-262.
8511 Fixed a branch elimination bug on the ARM platform where incorrect
8512 code was generated because of overly aggressive branch
8515 Improved performance of code that repeatedly assigns the same
8516 function to the same property of different objects with the same
8519 Untangled DEBUG and ENABLE_DISASSEMBLER defines. The disassembler
8520 no longer expects DEBUG to be defined.
8522 Added platform-nullos.cc to serve as the basis for new platform
8526 2008-07-30: Version 0.2.0
8528 Changed all text files to have native svn:eol-style.
8530 Added a few samples and support for building them. The samples
8531 include a simple shell that can be used to benchmark and test V8.
8533 Changed V8::GetVersion to return the version as a string.
8535 Added source for lazily loaded scripts to snapshots and made
8536 serialization non-destructive.
8538 Improved ARM support by fixing the write barrier code to use
8539 aligned loads and stores and by removing premature locals
8540 optimization that relied on broken support for callee-saved
8541 registers (removed).
8543 Refactored the code for marking live objects during garbage
8544 collection and the code for allocating objects in paged
8545 spaces. Introduced an abstraction for the map word of a heap-
8546 allocated object and changed the memory allocator to allocate
8547 executable memory only for spaces that may contain code objects.
8549 Moved StringBuilder to utils.h and ScopedLock to platform.h, where
8550 they can be used by debugging and logging modules. Added
8551 thread-safe message queues for dealing with debugger events.
8553 Fixed the source code reported by toString for certain builtin
8554 empty functions and made sure that the prototype property of a
8555 function is enumerable.
8557 Improved performance of converting values to condition flags in
8560 Merged disassembler-{arch} files.
8563 2008-07-28: Version 0.1.4
8565 Added support for storing JavaScript stack traces in a stack
8566 allocated buffer to make it visible in shallow core dumps.
8567 Controlled by the --preallocate-message-memory flag which is
8568 disabled by default.
8571 2008-07-25: Version 0.1.3
8573 Fixed bug in JSObject::GetPropertyAttributePostInterceptor where
8574 map transitions would count as properties.
8576 Allowed aliased eval invocations by treating them as evals in the
8577 global context. This may change in the future.
8579 Added support for accessing the last entered context through the
8580 API and renamed Context::Current to Context::GetCurrent and
8581 Context::GetSecurityContext to Context::GetCurrentSecurityContext.
8583 Fixed bug in the debugger that would cause the debugger scripts to
8584 be recursively loaded and changed all disabling of interrupts to
8585 be block-structured.
8587 Made snapshot data read-only to allow it to be more easily shared
8588 across multiple users of V8 when linked as a shared library.
8591 2008-07-16: Version 0.1.2
8593 Fixed building on Mac OS X by recognizing i386 and friends as
8596 Added propagation of stack overflow exceptions that occur while
8597 compiling nested functions.
8599 Improved debugger with support for recursive break points and
8600 handling of exceptions that occur in the debugger JavaScript code.
8602 Renamed GetInternal to GetInternalField and SetInternal to
8603 SetInternalField in the API and moved InternalFieldCount and
8604 SetInternalFieldCount from FunctionTemplate to ObjectTemplate.
8607 2008-07-09: Version 0.1.1
8609 Fixed bug in stack overflow check code for IA-32 targets where a
8610 non-tagged value in register eax was pushed to the stack.
8612 Fixed potential quadratic behavior when converting strings to
8615 Fixed bug where the return value from Object::SetProperty could
8616 end up being the property holder instead of the written value.
8618 Improved debugger support by allowing nested break points and by
8619 dealing with stack-overflows when compiling functions before
8620 setting break points in them.
8623 2008-07-03: Version 0.1.0