1 2015-02-19: Version 4.2.77
3 Make generator constructors configurable (issue 3902).
5 Performance and stability improvements on all platforms.
8 2015-02-19: Version 4.2.76
10 Performance and stability improvements on all platforms.
13 2015-02-18: Version 4.2.75
15 Performance and stability improvements on all platforms.
18 2015-02-18: Version 4.2.74
20 Correctly propagate terminate exception in TryCall (issue 3892).
22 Performance and stability improvements on all platforms.
25 2015-02-17: Version 4.2.73
27 Performance and stability improvements on all platforms.
30 2015-02-17: Version 4.2.72
32 [turbofan] Fix control reducer with re-reducing branches (Chromium issue
35 Performance and stability improvements on all platforms.
38 2015-02-16: Version 4.2.71
40 Implement ES6 rest parameters (issue 2159).
42 Performance and stability improvements on all platforms.
45 2015-02-13: Version 4.2.70
47 new classes: no longer experimental (issue 3834).
49 Make it possible to define arguments for CompileFunctionInContext.
51 Performance and stability improvements on all platforms.
54 2015-02-12: Version 4.2.69
56 Performance and stability improvements on all platforms.
59 2015-02-11: Version 4.2.68
61 Performance and stability improvements on all platforms.
64 2015-02-11: Version 4.2.67
66 Throw on range error when creating a string via API (issue 3853).
68 Performance and stability improvements on all platforms.
71 2015-02-11: Version 4.2.66
73 Performance and stability improvements on all platforms.
76 2015-02-10: Version 4.2.65
78 Performance and stability improvements on all platforms.
81 2015-02-10: Version 4.2.64
83 Performance and stability improvements on all platforms.
86 2015-02-10: Version 4.2.63
88 Introduce a compile method that takes context extensions (Chromium issue
91 Performance and stability improvements on all platforms.
94 2015-02-09: Version 4.2.62
96 Performance and stability improvements on all platforms.
99 2015-02-09: Version 4.2.61
101 Performance and stability improvements on all platforms.
104 2015-02-07: Version 4.2.60
106 Performance and stability improvements on all platforms.
109 2015-02-07: Version 4.2.59
111 Performance and stability improvements on all platforms.
114 2015-02-07: Version 4.2.58
116 Performance and stability improvements on all platforms.
119 2015-02-06: Version 4.2.57
121 Performance and stability improvements on all platforms.
124 2015-02-06: Version 4.2.56
126 Performance and stability improvements on all platforms.
129 2015-02-06: Version 4.2.55
131 Protect against uninitialized lexical variables at top-level (Chromium
134 Performance and stability improvements on all platforms.
137 2015-02-05: Version 4.2.54
139 Fix HConstant(double, ...) constructor (issue 3865).
141 Add NativeWeakMap to v8.h (Chromium issue 437416).
143 Performance and stability improvements on all platforms.
146 2015-02-05: Version 4.2.53
148 Fix issue with multiple properties and emit store (issue 3856).
150 Class methods should be non enumerable (issue 3330).
152 Performance and stability improvements on all platforms.
155 2015-02-04: Version 4.2.52
157 Add WeakKeyMap to v8.h (Chromium issue 437416).
159 Performance and stability improvements on all platforms.
162 2015-02-04: Version 4.2.51
164 Performance and stability improvements on all platforms.
167 2015-02-03: Version 4.2.50
169 Reset inlining limits due to overly long compilation times in
170 Speedometer, Dart2JS (Chromium issue 454625).
172 Add WeakMap to v8.h (Chromium issue 437416).
174 [V8] Added line, column and script symbols for SyntaxError (Chromium
177 Performance and stability improvements on all platforms.
180 2015-02-03: Version 4.2.49
182 Compute the same hash for all NaN values (issue 3859).
184 Performance and stability improvements on all platforms.
187 2015-02-03: Version 4.2.48
189 Performance and stability improvements on all platforms.
192 2015-02-02: Version 4.2.47
194 Check global object behind global proxy for extensibility (Chromium
197 Performance and stability improvements on all platforms.
200 2015-02-02: Version 4.2.46
202 Performance and stability improvements on all platforms.
205 2015-02-02: Version 4.2.45
207 Performance and stability improvements on all platforms.
210 2015-02-01: Version 4.2.44
212 Performance and stability improvements on all platforms.
215 2015-02-01: Version 4.2.43
217 Performance and stability improvements on all platforms.
220 2015-01-31: Version 4.2.42
222 Performance and stability improvements on all platforms.
225 2015-01-31: Version 4.2.41
227 Layout descriptor sharing issue fixed (issue 3832, Chromium issue
230 Performance and stability improvements on all platforms.
233 2015-01-30: Version 4.2.40
235 Performance and stability improvements on all platforms.
238 2015-01-30: Version 4.2.38
240 Move object literal checking into checker classes (issue 3819).
242 [turbofan] Fix OSR compilations of for-in.
244 Performance and stability improvements on all platforms.
247 2015-01-30: Version 4.2.37
249 Do not create unresolved variables when parsing arrow functions lazily
252 Performance and stability improvements on all platforms.
255 2015-01-29: Version 4.2.36
257 Performance and stability improvements on all platforms.
260 2015-01-29: Version 4.2.35
262 Performance and stability improvements on all platforms.
265 2015-01-28: Version 4.2.34
267 Performance and stability improvements on all platforms.
270 2015-01-28: Version 4.2.33
272 Performance and stability improvements on all platforms.
275 2015-01-27: Version 4.2.32
277 Do not generalize field representations when making elements kind or
278 observed transition (Chromium issue 448711).
280 Performance and stability improvements on all platforms.
283 2015-01-27: Version 4.2.31
285 [x86] Disable AVX unless the operating system explicitly claims to
286 support it (issue 3846, Chromium issue 452033).
288 Performance and stability improvements on all platforms.
291 2015-01-27: Version 4.2.30
293 Performance and stability improvements on all platforms.
296 2015-01-26: Version 4.2.29
298 MIPS: Fixed Hydrogen environment handling for mul-i ARM and ARM64 (issue
301 [turbofan] Simplify reduction if IfTrue and IfFalse and fix bugs
302 (Chromium issue 451958).
304 Add HeapNumber fast path to v8::Value::{Uint,Int}32Value() (Chromium
307 Performance and stability improvements on all platforms.
310 2015-01-26: Version 4.2.28
312 Fixed Hydrogen environment handling for mul-i on ARM and ARM64 (issue
315 Performance and stability improvements on all platforms.
318 2015-01-25: Version 4.2.27
320 Performance and stability improvements on all platforms.
323 2015-01-24: Version 4.2.26
325 ES6 Array.prototype.toString falls back on Object.prototype.toString if
326 method "join" is not callable (issue 3793).
328 Performance and stability improvements on all platforms.
331 2015-01-23: Version 4.2.25
333 Performance and stability improvements on all platforms.
336 2015-01-23: Version 4.2.24
338 Performance and stability improvements on all platforms.
341 2015-01-23: Version 4.2.23
343 [x86] Blacklist AVX for Windows versions before 6.1 (Windows 7) (issue
346 Performance and stability improvements on all platforms.
349 2015-01-23: Version 4.2.22
351 Fix run-time ARMv6 detection (issue 3844).
353 Support concatenating with zero-size arrays with DICTIONARY_ELEMENTS in
354 Runtime_ArrayConcat (Chromium issue 450895).
356 Performance and stability improvements on all platforms.
359 2015-01-22: Version 4.2.21
361 Performance and stability improvements on all platforms.
364 2015-01-22: Version 4.2.20
366 Add a pretty printer to improve the error message non-function calls
367 (Chromium issue 259443).
369 Remove implicit uint8_t to char cast in string replace (Chromium issue
372 Performance and stability improvements on all platforms.
375 2015-01-21: Version 4.2.19
377 Performance and stability improvements on all platforms.
380 2015-01-20: Version 4.2.18
382 Fix issue with __proto__ when using ES6 object literals (issue 3818).
384 Performance and stability improvements on all platforms.
387 2015-01-20: Version 4.2.17
389 Performance and stability improvements on all platforms.
392 2015-01-20: Version 4.2.16
394 Performance and stability improvements on all platforms.
397 2015-01-19: Version 4.2.15
399 Unobscurified OFStream (Chromium issue 448102).
401 Performance and stability improvements on all platforms.
404 2015-01-19: Version 4.2.14
406 Performance and stability improvements on all platforms.
409 2015-01-18: Version 4.2.13
411 Performance and stability improvements on all platforms.
414 2015-01-18: Version 4.2.12
416 Performance and stability improvements on all platforms.
419 2015-01-17: Version 4.2.11
421 Performance and stability improvements on all platforms.
424 2015-01-16: Version 4.2.10
426 Performance and stability improvements on all platforms.
429 2015-01-16: Version 4.2.9
431 MIPS: ES6 computed property names (issue 3754).
433 ES6 computed property names (issue 3754).
435 Performance and stability improvements on all platforms.
438 2015-01-15: Version 4.2.8
440 Performance and stability improvements on all platforms.
443 2015-01-15: Version 4.2.7
445 Performance and stability improvements on all platforms.
448 2015-01-15: Version 4.2.6
450 Performance and stability improvements on all platforms.
453 2015-01-15: Version 4.2.5
455 Performance and stability improvements on all platforms.
458 2015-01-14: Version 4.2.4
460 Auto-generate v8 version based on tags (Chromium issue 446166).
462 Remove support for signatures with arguments.
464 Add proper support for proxies to HType (Chromium issue 448730).
466 [turbofan] Fix truncation/representation sloppiness wrt. bool/bit (issue
469 Performance and stability improvements on all platforms.
472 2015-01-14: Version 4.2.3
474 Performance and stability improvements on all platforms.
477 2015-01-14: Version 4.2.2
479 Performance and stability improvements on all platforms.
482 2015-01-14: Version 4.2.1
484 Map -0 to integer 0 for typed array constructors (Chromium issue
487 Introduce a gyp variable to control whether or not slow dchecks are on.
489 Correctly setup the freelist of the coderange on Win64 (Chromium issue
492 Fast forward V8 to version 4.2.
494 Remove "extra checks".
496 Performance and stability improvements on all platforms.
499 2015-01-08: Version 3.32.7
501 Correctly parse line ends for debugging (issue 2825).
503 Fixed printing during DCE (issue 3679).
505 Performance and stability improvements on all platforms.
508 2015-01-08: Version 3.32.6
510 Performance and stability improvements on all platforms.
513 2015-01-08: Version 3.32.5
515 Correct handling of exceptions occured during getting of exception stack
516 trace (Chromium issue 444805).
518 Fix bug in Runtime_CompileOptimized resulting from stack overflow
519 (Chromium issue 446774).
521 Turn on job-based recompilation (issue 3608).
523 Performance and stability improvements on all platforms.
526 2015-01-07: Version 3.32.4
528 Performance and stability improvements on all platforms.
531 2015-01-07: Version 3.32.3
533 Performance and stability improvements on all platforms.
536 2015-01-07: Version 3.32.2
538 Performance and stability improvements on all platforms.
541 2015-01-07: Version 3.32.1
543 [turbofan] Don't crash when typing load from a Uint8ClampedArray
544 (Chromium issue 446156).
546 [turbofan] Truncation of Bit/Word8/16 to Word32 is a no-op (Chromium
549 [x64] Rearrange code for OOB integer loads (Chromium issue 445858).
551 Fix %NeverOptimizeFunction() intrinsic (Chromium issue 445732).
553 [turbofan] Fix invalid bounds check with overflowing offset (Chromium
556 [turbofan] Raise max virtual registers and call parameter limit (issue
559 Performance and stability improvements on all platforms.
562 2014-12-23: Version 3.31.74
564 [turbofan] Turn DCHECK for fixed slot index into a CHECK (Chromium issue
567 Performance and stability improvements on all platforms.
570 2014-12-23: Version 3.31.73
572 [turbofan] Fix missing ChangeUint32ToUint64 in lowering of LoadBuffer
573 (Chromium issue 444695).
575 Enable the embedder to specify what kind of context was disposed.
577 Performance and stability improvements on all platforms.
580 2014-12-22: Version 3.31.72
582 [turbofan] Correctify lowering of Uint8ClampedArray buffer access
583 (Chromium issue 444508).
585 Performance and stability improvements on all platforms.
588 2014-12-20: Version 3.31.71
590 Performance and stability improvements on all platforms.
593 2014-12-20: Version 3.31.70
595 Performance and stability improvements on all platforms.
598 2014-12-20: Version 3.31.69
600 Performance and stability improvements on all platforms.
603 2014-12-19: Version 3.31.68
605 [turbofan] Fix unsafe out-of-bounds check for checked loads/stores
606 (Chromium issue 443744).
608 Performance and stability improvements on all platforms.
611 2014-12-19: Version 3.31.67
613 Performance and stability improvements on all platforms.
616 2014-12-19: Version 3.31.66
618 Ship ES6 template literals (issue 3230).
620 Performance and stability improvements on all platforms.
623 2014-12-18: Version 3.31.65
625 ES6 template literals should not use legacy octal strings (issue 3736).
627 Performance and stability improvements on all platforms.
630 2014-12-18: Version 3.31.64
632 Fixed -fsanitize=float-cast-overflow problems (issue 3773).
634 Performance and stability improvements on all platforms.
637 2014-12-18: Version 3.31.63
639 ES6 computed property names (issue 3754).
641 Performance and stability improvements on all platforms.
644 2014-12-17: Version 3.31.62
646 Performance and stability improvements on all platforms.
649 2014-12-17: Version 3.31.61
651 ES6: Update unscopables to match spec (issue 3632).
653 ES6 computed property names (issue 3754).
655 More -fsanitize=vptr fixes (Chromium issue 441099).
657 [turbofan] Cache conversions inserted during typed lowering (issue
660 Performance and stability improvements on all platforms.
663 2014-12-16: Version 3.31.60
665 Performance and stability improvements on all platforms.
668 2014-12-16: Version 3.31.59
670 Performance and stability improvements on all platforms.
673 2014-12-16: Version 3.31.58
675 Ship ES6 classes (issue 3330).
677 ES6 computed property names (issue 3754).
679 Performance and stability improvements on all platforms.
682 2014-12-12: Version 3.31.57
684 Consistently use only one of virtual/OVERRIDE/FINAL (issue 3753).
686 Performance and stability improvements on all platforms.
689 2014-12-12: Version 3.31.56
691 Performance and stability improvements on all platforms.
694 2014-12-12: Version 3.31.55
696 Performance and stability improvements on all platforms.
699 2014-12-11: Version 3.31.54
701 Implement Array.from() (issue 3336).
703 move v8_use_external_startup_data to standalone.gypi (Chromium issue
706 Performance and stability improvements on all platforms.
709 2014-12-11: Version 3.31.53
711 Performance and stability improvements on all platforms.
714 2014-12-11: Version 3.31.52
716 Ship ES6 block scoping (issue 2198).
718 Optimize Object.seal and Object.preventExtensions (issue 3662, Chromium
721 Add Array.prototype.includes (issue 3575).
723 Performance and stability improvements on all platforms.
726 2014-12-10: Version 3.31.51
728 [x64] Fix optimization for certain checked load/stores (Chromium issue
731 Performance and stability improvements on all platforms.
734 2014-12-09: Version 3.31.50
736 Temporarily restore make dependencies.
738 Performance and stability improvements on all platforms.
741 2014-12-09: Version 3.31.49
743 Performance and stability improvements on all platforms.
746 2014-12-09: Version 3.31.48
748 Performance and stability improvements on all platforms.
751 2014-12-09: Version 3.31.47
753 Temporarily restore make dependencies.
755 Performance and stability improvements on all platforms.
758 2014-12-08: Version 3.31.46
760 Performance and stability improvements on all platforms.
763 2014-12-08: Version 3.31.45
765 Update all DEPS to match chromium's DEPS at edb488e.
767 Turn on DCHECKs and other debugging code if dcheck_always_on is 1 (issue
770 Optimize GetPrototype.
772 Performance and stability improvements on all platforms.
775 2014-12-05: Version 3.31.44
777 Performance and stability improvements on all platforms.
780 2014-12-04: Version 3.31.43
782 ES6 template literals: Fix issue with template after rbrace (issue
785 Stage ES6 template literals (issue 3230).
787 Performance and stability improvements on all platforms.
790 2014-12-04: Version 3.31.42
792 Performance and stability improvements on all platforms.
795 2014-12-04: Version 3.31.41
797 Simplify template literal raw string creation (issue 3710).
799 Performance and stability improvements on all platforms.
802 2014-12-03: Version 3.31.40
804 Performance and stability improvements on all platforms.
807 2014-12-03: Version 3.31.39
809 Performance and stability improvements on all platforms.
812 2014-12-03: Version 3.31.38
814 Stage ES6 classes and object literal extensions (issue 3330).
816 Fixed environment handling for LFlooringDivI on ARM (Chromium issue
819 Add GetIdentityHash to v8::Name object API (Chromium issue 437416).
821 Set V8_CC_GNU or V8_CC_MSVC for clang in gcc / cl mode (Chromium issue
824 Performance and stability improvements on all platforms.
827 2014-12-02: Version 3.31.37
829 Performance and stability improvements on all platforms.
832 2014-12-02: Version 3.31.36
834 Set V8_CC_GNU or V8_CC_MSVC for clang in gcc / cl mode (Chromium issue
837 Performance and stability improvements on all platforms.
840 2014-12-02: Version 3.31.35
842 Performance and stability improvements on all platforms.
845 2014-12-01: Version 3.31.34
847 Performance and stability improvements on all platforms.
850 2014-12-01: Version 3.31.33
852 Performance and stability improvements on all platforms.
855 2014-12-01: Version 3.31.32
857 Performance and stability improvements on all platforms.
860 2014-12-01: Version 3.31.31
862 Performance and stability improvements on all platforms.
865 2014-11-29: Version 3.31.30
867 Performance and stability improvements on all platforms.
870 2014-11-28: Version 3.31.29
872 Stage @@toStringTag (--harmony-tostring).
874 Performance and stability improvements on all platforms.
877 2014-11-28: Version 3.31.28
879 Performance and stability improvements on all platforms.
882 2014-11-28: Version 3.31.27
884 Ship harmony-strings.
886 Performance and stability improvements on all platforms.
889 2014-11-28: Version 3.31.26
891 Abort optimization in corner case (Chromium issue 436893).
893 Performance and stability improvements on all platforms.
896 2014-11-26: Version 3.31.25
898 Stage ES6 block scoping (issue 2198).
900 Introduce legacy const slots in correct context (Chromium issue 410030).
902 Performance and stability improvements on all platforms.
905 2014-11-26: Version 3.31.24
907 Performance and stability improvements on all platforms.
910 2014-11-25: Version 3.31.23
912 Performance and stability improvements on all platforms.
915 2014-11-25: Version 3.31.22
917 Performance and stability improvements on all platforms.
920 2014-11-24: Version 3.31.21
922 Performance and stability improvements on all platforms.
925 2014-11-24: Version 3.31.20
927 Performance and stability improvements on all platforms.
930 2014-11-22: Version 3.31.19
932 Performance and stability improvements on all platforms.
935 2014-11-21: Version 3.31.18
937 Performance and stability improvements on all platforms.
940 2014-11-21: Version 3.31.17
942 Performance and stability improvements on all platforms.
945 2014-11-21: Version 3.31.16
947 Cache template literal callSiteObj (issue 3230).
949 Rename String.prototype.contains to 'includes'.
951 Reserve code range block for evacuation (Chromium issue 430118).
953 Performance and stability improvements on all platforms.
956 2014-11-20: Version 3.31.15
958 Rename String.prototype.contains to 'includes'.
960 Performance and stability improvements on all platforms.
963 2014-11-19: Version 3.31.14
965 Remove Weak{Map,Set}.prototype.clear.
967 Performance and stability improvements on all platforms.
970 2014-11-19: Version 3.31.13
972 Performance and stability improvements on all platforms.
975 2014-11-19: Version 3.31.12
977 Classes: Expand test to cover strict runtime behavior (issue 3330).
979 v8::String::Concat must not throw (Chromium issue 420240).
981 Fix disabling all break points from within the debug event callback
982 (Chromium issue 432493).
984 Performance and stability improvements on all platforms.
987 2014-11-18: Version 3.31.11
989 Performance and stability improvements on all platforms.
992 2014-11-17: Version 3.31.10
994 Performance and stability improvements on all platforms.
997 2014-11-17: Version 3.31.9
999 Expose internal properties of map/set iterators via mirrors.
1001 Performance and stability improvements on all platforms.
1004 2014-11-17: Version 3.31.8
1006 Performance and stability improvements on all platforms.
1009 2014-11-15: Version 3.31.7
1011 Classes: Add support for stepping through default constructors (issue
1014 Performance and stability improvements on all platforms.
1017 2014-11-14: Version 3.31.6
1019 Fix desugaring of let bindings in for loops to handle continue properly
1022 Performance and stability improvements on all platforms.
1025 2014-11-14: Version 3.31.5
1027 Classes: Implement correct name binding (issue 3330).
1029 Performance and stability improvements on all platforms.
1032 2014-11-14: Version 3.31.4
1034 Performance and stability improvements on all platforms.
1037 2014-11-14: Version 3.31.3
1039 Classes: Cleanup default constructor flag.
1041 Soft fail for invalid cache data.
1043 Implement .of() on typed arrays (issue 3578).
1045 Performance and stability improvements on all platforms.
1048 2014-11-13: Version 3.31.2
1050 MIPS: Leaving a generator via an exception causes it to close (issue
1053 MIPS: ES6: Add support for super in object literals (issue 3571).
1055 Increase the target new space size to the max new space size (issue
1058 Leaving a generator via an exception causes it to close (issue 3096).
1060 Correctly compute line numbers in functions from the function
1061 constructor (Chromium issue 109362).
1063 Rename v8::Exception::GetMessage to CreateMessage.
1065 Classes: Add support for arguments in default constructor (issue 3672).
1067 ES6: Add support for super in object literals (issue 3571).
1069 Performance and stability improvements on all platforms.
1072 2014-11-12: Version 3.31.1
1074 Fix has_constant_parameter_count() confusion in LReturn (Chromium issue
1077 Performance and stability improvements on all platforms.
1080 2014-11-05: Version 3.30.33
1082 `1..isPrototypeOf.call(null)` should return false, not throw TypeError
1085 Refactor ObjectGetOwnPropertyKeys to accept bitmask rather than boolean
1088 Add debug mirror support for ES6 Map/Set iterators (Chromium issue
1091 Performance and stability improvements on all platforms.
1094 2014-11-04: Version 3.30.30
1096 Performance and stability improvements on all platforms.
1099 2014-11-02: Version 3.30.27
1101 Performance and stability improvements on all platforms.
1104 2014-11-02: Version 3.30.26
1106 Performance and stability improvements on all platforms.
1109 2014-11-01: Version 3.30.25
1111 Performance and stability improvements on all platforms.
1114 2014-11-01: Version 3.30.24
1116 Ensure we don't try to inline raw access to indexed interceptor
1117 receivers (Chromium issue 419220).
1119 Performance and stability improvements on all platforms.
1122 2014-10-31: Version 3.30.23
1124 Introduce v8::Exception::GetMessage to find location of an error object
1125 (Chromium issue 427954).
1127 Performance and stability improvements on all platforms.
1130 2014-10-30: Version 3.30.22
1132 MIPS: Classes: Add super support in methods and accessors (issue 3330).
1134 Classes: Add super support in methods and accessors (issue 3330).
1136 Performance and stability improvements on all platforms.
1139 2014-10-29: Version 3.30.21
1141 MIPS: Classes: Add basic support for properties (issue 3330).
1143 Classes: Add more tests for prototype edge cases (Chromium issue 3655).
1145 Classes: Add test for method prototype (issue 3330).
1147 Get stack trace for uncaught exceptions/promise rejections from the
1148 simple stack when available.
1150 Classes: Add basic support for properties (issue 3330).
1152 Allow duplicate property names in classes (issue 3570).
1154 Windows: use SystemTimeToTzSpecificLocalTime instead of localtime_s
1155 (Chromium issue 417640).
1157 Performance and stability improvements on all platforms.
1160 2014-10-28: Version 3.30.20
1162 Performance and stability improvements on all platforms.
1165 2014-10-27: Version 3.30.19
1167 Check string literals with escapes in PreParserTraits::GetSymbol()
1170 only define ARRAYSIZE_UNSAFE for NaCl builds (Chromium issue 405225).
1172 Performance and stability improvements on all platforms.
1175 2014-10-24: Version 3.30.18
1177 Narrow cases where Sparse/Smart versions of Array methods are used
1178 (issues 2615, 3612, 3621).
1180 Shrink new space in idle notification (Chromium issue 424423).
1182 Performance and stability improvements on all platforms.
1185 2014-10-23: Version 3.30.17
1187 ARM64: Fix stack manipulation (Chromium issue 425585).
1189 Speed up creation of Objects whose prototype has dictionary elements
1190 (Chromium issue 422754).
1192 Enable libstdc++ debug mode in debug builds (issue 3638).
1194 Performance and stability improvements on all platforms.
1197 2014-10-22: Version 3.30.16
1199 Remove v8stdint.h, it doesn't serve a purpose anymore.
1201 Performance and stability improvements on all platforms.
1204 2014-10-21: Version 3.30.15
1206 Avoid the Marsaglia effect in 3D (Chromium issue 423311).
1208 Performance and stability improvements on all platforms.
1211 2014-10-20: Version 3.30.14
1213 Performance and stability improvements on all platforms.
1216 2014-10-17: Version 3.30.13
1218 Don't expose Array.prototype.values as it breaks webcompat (Chromium
1221 Fix break location calculation (Chromium issue 419663).
1223 Enable libstdc++ debug mode in debug builds (issue 3638).
1225 Performance and stability improvements on all platforms.
1228 2014-10-17: Version 3.30.12
1230 Implement .forEach() on typed arrays (issue 3578).
1232 Introduce v8::Exception::GetStackTrace API method.
1234 Remove SmartMove, bringing Array methods further into spec compliance
1237 Convert argument toObject() in Object.getOwnPropertyNames/Descriptors
1240 Performance and stability improvements on all platforms.
1243 2014-10-15: Version 3.30.11
1245 Array.prototype.{every, filter, find, findIndex, forEach, map, some}:
1246 Use fresh primitive wrapper for calls (issue 3536).
1248 Correctly expand literal buffer for surrogate pairs (Chromium issue
1251 Performance and stability improvements on all platforms.
1254 2014-10-15: Version 3.30.10
1256 Squeeze the layout of various AST node types (Chromium issue 417697).
1258 Performance and stability improvements on all platforms.
1261 2014-10-14: Version 3.30.9
1263 Performance and stability improvements on all platforms.
1266 2014-10-13: Version 3.30.8
1268 AST nodes have at most one bailout/typefeedback ID now, saving lots of
1269 memory (Chromium issue 417697).
1271 Allow identifier code points from supplementary multilingual planes
1274 Performance and stability improvements on all platforms.
1277 2014-10-10: Version 3.30.7
1279 Fix computation of UTC time from local time at DST change points (issue
1280 3116, Chromium issues 415424, 417640).
1282 Convert `obj` ToObject in Object.keys() (issue 3587).
1284 Performance and stability improvements on all platforms.
1287 2014-10-09: Version 3.30.6
1289 Update unicode to 7.0.0 (issue 2892).
1291 Classes: Add support for toString (issue 3330).
1293 Don't enable WPO on Win64 and require Server 2003 / x64 for win64
1294 (Chromium issue 421363).
1296 Performance and stability improvements on all platforms.
1299 2014-10-08: Version 3.30.5
1301 Performance and stability improvements on all platforms.
1304 2014-10-08: Version 3.30.4
1306 This uses a runtime function to set up the the constructor and its
1307 prototype (issue 3330).
1309 Remove PersistentBase::ClearAndLeak.
1311 Squeeze the layout of variable proxy nodes (Chromium issue 417697).
1313 Add MonotonicallyIncreasingTime to V8 Platform (Chromium issue 417668).
1315 Fix representation of HLoadRoot (Chromium issue 419036).
1317 Performance and stability improvements on all platforms.
1320 2014-10-03: Version 3.30.3
1322 Removed the Isolate* field from literal nodes (Chromium issue 417697).
1324 Squeeze the layout of expression nodes a bit (Chromium issue 417697).
1326 Merged FeedbackSlotInterface into AstNode, removing the need for a 2nd
1327 vtable (Chromium issue 417697).
1329 Extend CPU profiler with mapping ticks to source lines.
1331 Remove support for parallel sweeping.
1333 Introduce v8::Object::GetIsolate().
1335 Performance and stability improvements on all platforms.
1338 2014-10-02: Version 3.30.2
1340 Fix Hydrogen's BuildStore() (Chromium issue 417508).
1342 Move unit tests to test/unittests (issue 3489).
1344 Changes to ALLOW_UNUSED to match upcoming changes to the Chromium trunk:
1345 * Eliminate usage of ALLOW_UNUSED to define COMPILE_ASSERT and just use
1346 static_assert() in all cases now that all platforms build with C++11. *
1347 Convert remaining uses of ALLOW_UNUSED to ALLOW_UNUSED_TYPE to match how
1348 Chromium will be splitting this functionality. (In Chromium we'll have
1349 both ALLOW_UNUSED_TYPE and ALLOW_UNUSED_LOCAL, which have different
1350 syntax to enable us to use these with MSVC.) (Chromium issue 81439).
1352 Performance and stability improvements on all platforms.
1355 2014-10-01: Version 3.30.1
1357 Introduce PromiseRejectCallback (issue 3093).
1359 ES6: Implement object literal property shorthand (issue 3584).
1361 Performance and stability improvements on all platforms.
1364 2014-09-30: Version 3.29.93
1366 Add a getter for the address and size of the code range to the pulic API
1369 Convert `obj` ToObject in Object.keys() (issue 3587).
1371 Performance and stability improvements on all platforms.
1374 2014-09-29: Version 3.29.92
1376 Performance and stability improvements on all platforms.
1379 2014-09-26: Version 3.29.91
1381 Performance and stability improvements on all platforms.
1384 2014-09-25: Version 3.29.88
1386 Performance and stability improvements on all platforms.
1389 2014-09-24: Version 3.29.87
1391 Preserve message when rethrowing exception (issue 3583).
1393 Fix escaped index JSON parsing (Chromium issue 416449).
1395 Performance and stability improvements on all platforms.
1398 2014-09-23: Version 3.29.84
1400 Performance and stability improvements on all platforms.
1403 2014-09-23: Version 3.29.83
1405 Performance and stability improvements on all platforms.
1408 2014-09-23: Version 3.29.82
1410 Fix escaped index JSON parsing (Chromium issue 416449).
1412 Performance and stability improvements on all platforms.
1415 2014-09-17: Version 3.29.70
1417 Enable ES6 generators (issue 2355).
1419 Fixed int vs. uintptr_t confusion (plus some cleanup on the way) (issue
1422 Move configuration of ResourceConstraints to Isolate construction.
1424 Performance and stability improvements on all platforms.
1427 2014-09-16: Version 3.29.66
1429 Currently, a new isolate is created in an uninitialized state, and
1430 several API methods will automatically initialize it. During this
1431 uninitialized state, code event handlers and function entry handlers can
1432 be attached to the isolate.
1434 Performance and stability improvements on all platforms.
1437 2014-09-15: Version 3.29.64
1439 ES6: String(symbol) should work like symbol.toString (issue 3554).
1441 Arrow functions: Cleanup handling of the prototype property (issue
1444 Remove V8_HOST_CAN_READ_UNALIGNED and its uses (Chromium issue 412967).
1446 Fix Smi vs. HeapObject confusion in HConstants (Chromium issue 412215).
1448 Performance and stability improvements on all platforms.
1451 2014-09-12: Version 3.29.59
1453 Do not use wide reads in CopyCharsUnsigned (Chromium issue 412967).
1455 Fix inaccurate type condition in Hydrogen (Chromium issue 412210).
1457 Fix crash in ScriptDebugServer::wrapCallFrames (Chromium issue 411196).
1459 Performance and stability improvements on all platforms.
1462 2014-09-11: Version 3.29.57
1464 ES6: Add support for method shorthand in object literals (issue 3516).
1466 Unbreak FreeBSD build (hopefully) (issue 3548).
1468 Performance and stability improvements on all platforms.
1471 2014-09-09: Version 3.29.53
1473 Performance and stability improvements on all platforms.
1476 2014-09-08: Version 3.29.50
1478 Allocate a new empty number dictionary when resetting elements (Chromium
1481 Performance and stability improvements on all platforms.
1484 2014-09-05: Version 3.29.43
1486 Enforce correct number comparisons when inlining Array.indexOf (Chromium
1489 Performance and stability improvements on all platforms.
1492 2014-09-04: Version 3.29.41
1494 Performance and stability improvements on all platforms.
1497 2014-09-03: Version 3.29.40
1499 Use correct receiver for DOM accessors on the prototype chain (issue
1502 Performance and stability improvements on all platforms.
1505 2014-09-02: Version 3.29.38
1507 Do not clear weak monomorphic IC after context disposal (Chromium issue
1510 Turn on job-based sweeping (issue 3104).
1512 Performance and stability improvements on all platforms.
1515 2014-09-01: Version 3.29.35
1517 Performance and stability improvements on all platforms.
1520 2014-08-29: Version 3.29.29
1522 Performance and stability improvements on all platforms.
1525 2014-08-28: Version 3.29.27
1527 Performance and stability improvements on all platforms.
1530 2014-08-28: Version 3.29.25
1532 Performance and stability improvements on all platforms.
1535 2014-08-28: Version 3.29.24
1537 Tweaks to generate XP-compatible .exes (Chromium issue 407517).
1539 Performance and stability improvements on all platforms.
1542 2014-08-28: Version 3.29.23
1544 Performance and stability improvements on all platforms.
1547 2014-08-27: Version 3.29.20
1549 Handle empty allocation list in CodeRange properly (issue 3540, Chromium
1552 Fixed inlining of constant values (issue 3529).
1554 Performance and stability improvements on all platforms.
1557 2014-08-25: Version 3.29.17
1559 Performance and stability improvements on all platforms.
1562 2014-08-24: Version 3.29.16
1564 Fix issue with numeric property names (issue 3507).
1566 Add back the duplicate property checker (issue 3498).
1568 Performance and stability improvements on all platforms.
1571 2014-08-22: Version 3.29.14
1573 Don't inline Array.shift() if receiver map is not extensible (Chromium
1576 Performance and stability improvements on all platforms.
1579 2014-08-21: Version 3.29.11
1581 Refactor ParseObjectLiteral.
1583 Support symbol-named properties in API (issue 3394).
1585 Suppress test262 test that tests duplicate properties.
1587 ES6: Duplicate properties are no longer an error (issue 3498).
1589 Expose function CheckDebugBreak in the debugger api.
1591 Remove RegExp.$input (issue 3486).
1593 Performance and stability improvements on all platforms.
1596 2014-08-21: Version 3.29.10
1598 ES6: Make sure we do not store -0 as the key in Map/Set (issue 3515).
1600 Remove removed flags from tests.
1602 Expose well-known Symbols to C++ API (Chromium issue 341423).
1604 Implement ES6 Array.of() (issue 3427).
1606 Performance and stability improvements on all platforms.
1609 2014-08-20: Version 3.29.9
1611 Correctly handle holes when concat()ing double arrays (Chromium issue
1614 [turbofan] Refactor the InstructionSelector tests (issue 3489).
1616 ES6: Make Map/Set constructors support iterable values (issue 3508).
1618 WeakMap/WeakSet: Add test for non object keys (issue 3399).
1620 Performance and stability improvements on all platforms.
1623 2014-08-12: Version 3.28.71
1625 ToNumber(Symbol) should throw TypeError (issue 3499).
1627 Performance and stability improvements on all platforms.
1630 2014-08-11: Version 3.28.69
1632 Performance and stability improvements on all platforms.
1635 2014-08-09: Version 3.28.65
1637 Performance and stability improvements on all platforms.
1640 2014-08-08: Version 3.28.64
1642 ES6: Implement WeakMap and WeakSet constructor logic (issue 3399).
1644 Enable ES6 unscopables (issue 3401).
1646 Turn on harmony_unscopables for es_staging (issue 3401).
1648 Remove proxies from --harmony switch for M38, because problems.
1650 Reland "Add initial support for compiler unit tests using GTest/GMock."
1653 Enable ES6 iteration by default (issue 2214).
1655 Performance and stability improvements on all platforms.
1658 2014-08-07: Version 3.28.62
1660 Only escape U+0022 in argument values of `String.prototype` HTML methods
1663 Update webkit test for expected own properties.
1665 This implements unscopables (issue 3401).
1667 Add `CheckObjectCoercible` for the `String.prototype` HTML methods
1670 Add initial support for compiler unit tests using GTest/GMock (issue
1673 Trigger exception debug events on Promise reject (Chromium issue
1676 Refactor unit tests for the base library to use GTest (issue 3489).
1678 Performance and stability improvements on all platforms.
1681 2014-08-06: Version 3.28.60
1683 Enable ES6 Map and Set by default (issue 1622).
1685 Performance and stability improvements on all platforms.
1688 2014-08-06: Version 3.28.59
1690 Removed GetConstructor from the API. Instead either get the
1691 "constructor" property stored in the prototype, or keep a side-table.
1693 Enable ES6 Symbols by default (issue 2158).
1695 Performance and stability improvements on all platforms.
1698 2014-08-05: Version 3.28.57
1700 Add dependencies on gtest and gmock.
1702 Performance and stability improvements on all platforms.
1705 2014-08-04: Version 3.28.54
1707 Performance and stability improvements on all platforms.
1710 2014-08-01: Version 3.28.53
1712 Performance and stability improvements on all platforms.
1715 2014-07-31: Version 3.28.52
1717 Performance and stability improvements on all platforms.
1720 2014-07-31: Version 3.28.51
1722 Drop deprecated memory related notification API (Chromium issue 397026).
1724 Performance and stability improvements on all platforms.
1727 2014-07-31: Version 3.28.50
1729 Use emergency memory in the case of out of memory during evacuation
1730 (Chromium issue 395314).
1732 Performance and stability improvements on all platforms.
1735 2014-07-30: Version 3.28.48
1737 Fix Object.freeze with field type tracking. Keep the descriptor properly
1738 intact while update the field type (issue 3458).
1740 Performance and stability improvements on all platforms.
1743 2014-07-29: Version 3.28.45
1745 Performance and stability improvements on all platforms.
1748 2014-07-28: Version 3.28.43
1750 Performance and stability improvements on all platforms.
1753 2014-07-25: Version 3.28.38
1755 Fix issue with setters and their holders in accessors.cc (Chromium issue
1758 Introduce more debug events for promises (issue 3093).
1760 Move gc notifications from V8 to Isolate and make idle hint mandatory
1761 (Chromium issue 397026).
1763 The accessors should get the value from the holder and not from this
1766 Performance and stability improvements on all platforms.
1769 2014-07-24: Version 3.28.35
1771 Rebaseline/update the intl tests with ICU 52 (issue 3454).
1773 Expose the content of Sets and WeakSets through SetMirror (issue 3093).
1775 Performance and stability improvements on all platforms.
1778 2014-07-23: Version 3.28.32
1780 Update ICU to 5.2 (matching chromium) (issue 3452).
1782 Performance and stability improvements on all platforms.
1785 2014-07-22: Version 3.28.31
1787 Remove harmony-typeof.
1789 Implement String.prototype.codePointAt and String.fromCodePoint (issue
1792 Performance and stability improvements on all platforms.
1795 2014-07-21: Version 3.28.30
1797 Performance and stability improvements on all platforms.
1800 2014-07-21: Version 3.28.29
1802 Performance and stability improvements on all platforms.
1805 2014-07-18: Version 3.28.28
1807 Performance and stability improvements on all platforms.
1810 2014-07-17: Version 3.28.26
1812 Ship ES6 Math functions (issue 2938).
1814 Make ToPrimitive throw on symbol wrappers (issue 3442).
1816 Performance and stability improvements on all platforms.
1819 2014-07-16: Version 3.28.25
1821 Performance and stability improvements on all platforms.
1824 2014-07-16: Version 3.28.24
1826 Removed some copy-n-paste from StackFrame::Foo API entries (issue 3436).
1828 Performance and stability improvements on all platforms.
1831 2014-07-15: Version 3.28.23
1833 Fix error message about read-only symbol properties (issue 3441).
1835 Include symbol properties in Object.{create,defineProperties} (issue
1838 Performance and stability improvements on all platforms.
1841 2014-07-14: Version 3.28.22
1843 Performance and stability improvements on all platforms.
1846 2014-07-11: Version 3.28.21
1848 Make `let` usable as an identifier in ES6 sloppy mode (issue 2198).
1850 Support ES6 Map and Set in heap profiler (issue 3368).
1852 Performance and stability improvements on all platforms.
1855 2014-07-10: Version 3.28.20
1857 Remove deprecate counter/histogram methods.
1859 Fixed printing of external references (Chromium issue 392068).
1861 Fix several issues with ES6 redeclaration checks (issue 3426).
1863 Performance and stability improvements on all platforms.
1866 2014-07-09: Version 3.28.19
1868 Performance and stability improvements on all platforms.
1871 2014-07-09: Version 3.28.18
1873 Reland "Postpone termination exceptions in debug scope." (issue 3408).
1875 Performance and stability improvements on all platforms.
1878 2014-07-08: Version 3.28.17
1880 MIPS: Fix computed properties on object literals with a double as
1881 propertyname (Chromium issue 390732).
1883 Performance and stability improvements on all platforms.
1886 2014-07-08: Version 3.28.16
1888 Fix computed properties on object literals with a double as propertyname
1889 (Chromium issue 390732).
1891 Avoid brittle use of .bind in Promise.all (issue 3420).
1893 Performance and stability improvements on all platforms.
1896 2014-07-07: Version 3.28.15
1898 Remove a bunch of Isolate::UncheckedCurrent calls.
1900 Performance and stability improvements on all platforms.
1903 2014-07-07: Version 3.28.14
1905 Use the HeapObjectIterator to scan-on-scavenge map pages (Chromium issue
1908 Introduce debug events for Microtask queue (Chromium issue 272416).
1910 Split out libplatform into a separate libary.
1912 Add clang-format to presubmit checks.
1914 Stack traces exposed to Javascript should omit extensions (issue 311).
1916 Remove deprecated v8::Context::HasOutOfMemoryException.
1918 Postpone termination exceptions in debug scope (issue 3408).
1920 Performance and stability improvements on all platforms.
1923 2014-07-04: Version 3.28.13
1928 2014-07-04: Version 3.28.12
1930 Use the HeapObjectIterator to scan-on-scavenge map pages (Chromium issue
1933 Introduce debug events for Microtask queue (Chromium issue 272416).
1935 Performance and stability improvements on all platforms.
1938 2014-07-03: Version 3.28.11
1940 Split out libplatform into a separate libary.
1942 Performance and stability improvements on all platforms.
1945 2014-07-03: Version 3.28.10
1947 Add clang-format to presubmit checks.
1949 Stack traces exposed to Javascript should omit extensions (issue 311).
1951 Remove deprecated v8::Context::HasOutOfMemoryException.
1953 Postpone termination exceptions in debug scope (issue 3408).
1955 Performance and stability improvements on all platforms.
1958 2014-07-02: Version 3.28.9
1960 Make freeze & friends ignore private properties (issue 3419).
1962 Introduce a builddeps make target (issue 3418).
1964 Performance and stability improvements on all platforms.
1967 2014-07-01: Version 3.28.8
1969 Remove static initializer from isolate.
1971 ES6: Add missing Set.prototype.keys function (issue 3411).
1973 Introduce debug events for promises (issue 3093).
1975 Performance and stability improvements on all platforms.
1978 2014-06-30: Version 3.28.7
1980 Performance and stability improvements on all platforms.
1983 2014-06-30: Version 3.28.6
1985 Unbreak "os" stuff in shared d8 builds (issue 3407).
1987 Performance and stability improvements on all platforms.
1990 2014-06-26: Version 3.28.4
1992 Compile optimized code with active debugger but no break points
1993 (Chromium issue 386492).
1995 Optimize Map/Set.prototype.forEach.
1997 Collect garbage with kReduceMemoryFootprintMask in IdleNotification
1998 (Chromium issue 350720).
2000 Performance and stability improvements on all platforms.
2003 2014-06-26: Version 3.28.3
2005 Grow heap slower if GC freed many global handles (Chromium issue
2008 Performance and stability improvements on all platforms.
2011 2014-06-25: Version 3.28.2
2013 Remove bogus assertions in HCompareObjectEqAndBranch (Chromium issue
2016 Do not eagerly update allow_osr_at_loop_nesting_level (Chromium issue
2019 Set host_arch to ia32 on machines with a 32bit userland but a 64bit
2020 kernel (Chromium issue 368384).
2022 Map/Set: Implement constructor parameter handling (issue 3398).
2024 Performance and stability improvements on all platforms.
2027 2014-06-24: Version 3.28.1
2029 Support LiveEdit on Arm64 (Chromium issue 368580).
2031 Run JS micro tasks in the appropriate context (Chromium issue 385349).
2033 Add a use counter API.
2035 Set host_arch to ia32 on machines with a 32bit userland but a 64bit
2038 Performance and stability improvements on all platforms.
2041 2014-06-23: Version 3.28.0
2043 MIPS: Support LiveEdit (Chromium issue 368580).
2045 Array.concat: properly go to dictionary mode when required (Chromium
2048 Support LiveEdit on ARM (Chromium issue 368580).
2050 Performance and stability improvements on all platforms.
2053 2014-06-18: Version 3.27.34
2055 Reduce number of writes to DependentCode array when inserting dependent
2056 IC (Chromium issue 305878).
2058 Performance and stability improvements on all platforms.
2061 2014-06-17: Version 3.27.33
2063 Do GC if CodeRange fails to allocate a block (Chromium issue 305878).
2065 Throw syntax error when a getter/setter has the wrong number of params
2068 Performance and stability improvements on all platforms.
2071 2014-06-17: Version 3.27.32
2073 Performance and stability improvements on all platforms.
2076 2014-06-16: Version 3.27.31
2081 2014-06-16: Version 3.27.30
2083 Fix representation of Phis for mutable-heapnumber-in-object-literal
2084 properties (issue 3392).
2086 Performance and stability improvements on all platforms.
2089 2014-06-16: Version 3.27.29
2091 Emulate MLS on pre-ARMv6T2. Cleaned up thumbee vs. thumb2 confusion.
2093 X87: Fixed flooring division by a power of 2, once again.. (issue 3259).
2095 Fixed undefined behavior in RNG (Chromium issue 377790).
2097 Performance and stability improvements on all platforms.
2100 2014-06-13: Version 3.27.28
2102 Add v8::Promise::Then (Chromium issue 371288).
2104 Performance and stability improvements on all platforms.
2107 2014-06-12: Version 3.27.27
2109 Fix detection of VFP3D16 on Galaxy Tab 10.1 (issue 3387).
2111 Performance and stability improvements on all platforms.
2114 2014-06-12: Version 3.27.26
2116 MIPS: Fixed flooring division by a power of 2, once again.. (issue
2119 Fixed flooring division by a power of 2, once again.. (issue 3259).
2121 Fix unsigned comparisons (issue 3380).
2123 Performance and stability improvements on all platforms.
2126 2014-06-11: Version 3.27.25
2128 Performance and stability improvements on all platforms.
2131 2014-06-11: Version 3.27.24
2133 Fix invalid attributes when generalizing because of incompatible map
2134 change (Chromium issue 382143).
2136 Fix missing smi check in inlined indexOf/lastIndexOf (Chromium issue
2139 Performance and stability improvements on all platforms.
2142 2014-06-06: Version 3.27.23
2144 Performance and stability improvements on all platforms.
2147 2014-06-06: Version 3.27.22
2149 Performance and stability improvements on all platforms.
2152 2014-06-06: Version 3.27.21
2154 Turn on harmony_collections for es_staging (issue 1622).
2156 Do not make heap iterable eagerly (Chromium issue 379740).
2158 Performance and stability improvements on all platforms.
2161 2014-06-05: Version 3.27.20
2163 Fix invalid loop condition for Array.lastIndexOf() (Chromium issue
2166 Add API support for passing a C++ function as a microtask callback.
2168 Performance and stability improvements on all platforms.
2171 2014-06-04: Version 3.27.19
2173 Split Put into Put and Remove.
2175 ES6: Add support for values/keys/entries for Map and Set (issue 1793).
2177 Performance and stability improvements on all platforms.
2180 2014-06-03: Version 3.27.18
2182 Remove PROHIBITS_OVERWRITING as it is subsumed by non-configurable
2185 Performance and stability improvements on all platforms.
2188 2014-06-02: Version 3.27.17
2190 BuildNumberToString: Check for undefined keys in the cache (Chromium
2193 HRor and HSar can deoptimize (issue 3359).
2195 Simplify, speed-up correct-context ObjectObserve calls.
2197 Performance and stability improvements on all platforms.
2200 2014-05-29: Version 3.27.16
2202 Allow microtasks to throw exceptions and handle them gracefully
2203 (Chromium issue 371566).
2205 Performance and stability improvements on all platforms.
2208 2014-05-28: Version 3.27.15
2210 Performance and stability improvements on all platforms.
2213 2014-05-27: Version 3.27.14
2215 Reland "Customized support for feedback on calls to Array." and follow-
2216 up fixes (Chromium issues 377198, 377290).
2218 Performance and stability improvements on all platforms.
2221 2014-05-26: Version 3.27.13
2223 Performance and stability improvements on all platforms.
2226 2014-05-26: Version 3.27.12
2228 Check for cached transition to ExternalArray elements kind (issue 3337).
2230 Support ES6 weak collections in heap profiler (Chromium issue 376196).
2232 Performance and stability improvements on all platforms.
2235 2014-05-23: Version 3.27.11
2237 Add support for ES6 Symbol in heap profiler (Chromium issue 376194).
2239 Performance and stability improvements on all platforms.
2242 2014-05-22: Version 3.27.10
2244 Implement Mirror object for Symbols (issue 3290).
2246 Allow debugger to step into Map and Set forEach callbacks (issue 3341).
2248 Fix ArrayShift hydrogen support (Chromium issue 374838).
2250 Use SameValueZero for Map and Set (issue 1622).
2252 Array Iterator next should check for own property.
2254 Performance and stability improvements on all platforms.
2257 2014-05-21: Version 3.27.9
2259 Disable ArrayShift hydrogen support (Chromium issue 374838).
2261 ES6 Map/Set iterators/forEach improvements (issue 1793).
2263 Performance and stability improvements on all platforms.
2266 2014-05-20: Version 3.27.8
2268 Move microtask queueing logic from JavaScript to C++.
2270 Partial revert of "Next bunch of fixes for check elimination" (Chromium
2273 Performance and stability improvements on all platforms.
2276 2014-05-19: Version 3.27.7
2278 Performance and stability improvements on all platforms.
2281 2014-05-19: Version 3.27.6
2283 Performance and stability improvements on all platforms.
2286 2014-05-16: Version 3.27.5
2288 Performance and stability improvements on all platforms.
2291 2014-05-15: Version 3.27.4
2293 Drop thenable coercion cache (Chromium issue 372788).
2295 Skip write barriers when updating the weak hash table (Chromium issue
2298 Performance and stability improvements on all platforms.
2301 2014-05-14: Version 3.27.3
2303 Performance and stability improvements on all platforms.
2306 2014-05-13: Version 3.27.2
2308 Harden %SetIsObserved with RUNTIME_ASSERTs (Chromium issue 371782).
2310 Drop unused static microtask API.
2312 Introduce an api to query the microtask autorun state of an isolate.
2314 Performance and stability improvements on all platforms.
2317 2014-05-12: Version 3.27.1
2319 Object.observe: avoid accessing acceptList properties more than once
2322 Array Iterator prototype should not have a constructor (issue 3293).
2324 Fix typos in unit test for Array.prototype.fill().
2326 Shorten autogenerated error message for functions only (issue 3019,
2327 Chromium issue 331971).
2329 Reland "Removed default Isolate." (Chromium issue 359977).
2331 Performance and stability improvements on all platforms.
2334 2014-05-09: Version 3.27.0
2336 Unbreak samples and tools.
2338 Performance and stability improvements on all platforms.
2341 2014-05-08: Version 3.26.33
2343 Removed default Isolate (Chromium issue 359977).
2345 Performance and stability improvements on all platforms.
2348 2014-05-07: Version 3.26.32
2350 Performance and stability improvements on all platforms.
2353 2014-05-06: Version 3.26.31
2355 Add a basic gn file for V8.
2357 Performance and stability improvements on all platforms.
2360 2014-05-05: Version 3.26.30
2362 Introduce a microtask suppression scope and move microtask methods to
2363 isolate (Chromium issue 369503).
2365 Re-enable Object.observe and add enforcement for security invariants.
2367 Move cache line size calculation directly into CPU::FlushICache
2368 (Chromium issue 359977).
2370 Generation of our home-grown memmove doesn't depend on serializer state
2371 anymore (Chromium issue 359977).
2373 Fix |RunMicrotasks()| leaking reference to the last context being run
2376 Object.defineProperty shouldn't be a hint that we're constructing a
2377 dictionary (Chromium issue 362870).
2379 Performance and stability improvements on all platforms.
2382 2014-05-01: Version 3.26.29
2384 Added a Isolate* parameter to Serializer::enabled() (Chromium issue
2387 ES6: Add support for Array.prototype.fill() (issue 3273).
2389 Performance and stability improvements on all platforms.
2392 2014-04-29: Version 3.26.28
2394 PromiseThen should ignore non-function parameters (Chromium issue
2397 Performance and stability improvements on all platforms.
2400 2014-04-29: Version 3.26.27
2402 Error stack getter should not overwrite itself with a data property
2405 Performance and stability improvements on all platforms.
2408 2014-04-28: Version 3.26.26
2410 Expose promise value through promise mirror (issue 3093).
2412 Simplified CPU/CpuFeatures a bit (Chromium issue 359977).
2414 Performance and stability improvements on all platforms.
2417 2014-04-28: Version 3.26.25
2419 Add timestamps to CPU profile samples (Chromium issue 363976).
2421 Expose promise status through promise mirror (issue 3093).
2423 Remove static CallCompletedCallback handlers.
2425 Added an Isolate* field to NoTrackDoubleFieldsForSerializerScope,
2426 PlatformFeatureScope and BinaryOpIC::State (Chromium issue 359977).
2428 Trigger debug event on not yet caught exception in promises (issue
2431 Unbreak vtunejit=on (issue 3288).
2433 Performance and stability improvements on all platforms.
2436 2014-04-25: Version 3.26.24
2438 MIPS: CodeStubs contain their corresponding Isolate* now. (part 2)
2439 (Chromium issue 359977).
2441 MIPS: CodeStubs contain their corresponding Isolate* now. (part 1)
2442 (Chromium issue 359977).
2444 CodeStubs contain their corresponding Isolate* now. (part 2) (Chromium
2447 Make DescriptorArray::IsMoreGeneralThan() and DescriptorArray::Merge()
2448 compatible again (Chromium issue 365172).
2450 CodeStubs contain their corresponding Isolate* now. (part 1) (Chromium
2453 Performance and stability improvements on all platforms.
2456 2014-04-24: Version 3.26.23
2458 Performance and stability improvements on all platforms.
2461 2014-04-23: Version 3.26.22
2463 Disable field type tracking by default (Chromium issue 365172).
2465 Performance and stability improvements on all platforms.
2468 2014-04-23: Version 3.26.21
2470 Context-allocate all parameters in generators (issue 3280).
2472 Simplify v8/Isolate teardown (Chromium issue 359977).
2474 Performance and stability improvements on all platforms.
2477 2014-04-21: Version 3.26.20
2479 ES6: Add support for Map/Set forEach (Chromium issues 1793, 2323).
2481 Performance and stability improvements on all platforms.
2484 2014-04-18: Version 3.26.19
2486 ES6: Add support for Map/Set forEach (Chromium issues 1793, 2323).
2488 Performance and stability improvements on all platforms.
2491 2014-04-17: Version 3.26.18
2493 Removed Isolate::EnterDefaultIsolate (Chromium issue 359977).
2495 Performance and stability improvements on all platforms.
2498 2014-04-16: Version 3.26.17
2500 Clear invalid field maps in PropertyAccessInfo (Chromium issue 363956).
2502 ES6: Add support for Map/Set forEach (Chromium issues 1793, 2323).
2504 Performance and stability improvements on all platforms.
2507 2014-04-16: Version 3.26.16
2509 Removed EnterIsolateIfNeeded and a soon-to-be-useless assertion
2510 (Chromium issue 359977).
2512 Removed GetDefaultIsolate{Debugger,ForLocking,StackGuard} (Chromium
2515 Performance and stability improvements on all platforms.
2518 2014-04-15: Version 3.26.15
2520 Fix result of LCodeGen::DoWrapReceiver for strict functions and builtins
2521 (Chromium issue 362128).
2523 Performance and stability improvements on all platforms.
2526 2014-04-15: Version 3.26.14
2528 Performance and stability improvements on all platforms.
2531 2014-04-14: Version 3.26.13
2533 Make maps in monomorphic IC stubs weak (issue 2073).
2535 x64: Make sure that the upper half of a 64bit register contains 0 for
2536 int32 values (Chromium issue 360611).
2538 Performance and stability improvements on all platforms.
2541 2014-04-11: Version 3.26.12
2543 Do not use ranges after range analysis (Chromium issue 361608).
2545 Performance and stability improvements on all platforms.
2548 2014-04-10: Version 3.26.11
2550 Performance and stability improvements on all platforms.
2553 2014-04-10: Version 3.26.10
2555 Allow the embedder to pass the virtual memory limit to v8.
2557 Performance and stability improvements on all platforms.
2560 2014-04-09: Version 3.26.9
2562 Fix invalid local property lookup for transitions (Chromium issue
2565 MIPS: Fixed flooring division by -1 (issue 3259).
2567 Fixed flooring division by -1 on ARM (issue 3259).
2569 Make `String.prototype.contains` throw when passing a regular expression
2572 Performance and stability improvements on all platforms.
2575 2014-04-08: Version 3.26.8
2577 Yet another regression test for range analysis (issue 3204).
2579 Performance and stability improvements on all platforms.
2582 2014-04-07: Version 3.26.7
2584 Performance and stability improvements on all platforms.
2587 2014-04-04: Version 3.26.6
2589 Performance and stability improvements on all platforms.
2592 2014-04-03: Version 3.26.5
2594 Performance and stability improvements on all platforms.
2597 2014-04-03: Version 3.26.4
2599 Make stray 'return' an early error.
2601 Show references from weak containers as weak in heap snapshots (Chromium
2604 Make invalid LHSs that are calls late errors (Chromium issue 358346).
2606 Performance and stability improvements on all platforms.
2609 2014-04-02: Version 3.26.3
2611 Support typed arrays in IsMoreGeneralElementsKindTransition (Chromium
2614 Remove debugger_auto_break flag.
2616 Store i18n meta data in hidden symbols instead of js accessible
2617 properties (Chromium issue 354967).
2619 Performance and stability improvements on all platforms.
2622 2014-04-01: Version 3.26.2
2624 Performance and stability improvements on all platforms.
2627 2014-04-01: Version 3.26.1
2629 Fix Type::Intersect to skip uninhabited bitsets (Chromium issue 357330).
2631 Fix PrepareKeyedOperand on arm (Chromium issue 358057).
2633 Performance and stability improvements on all platforms.
2636 2014-03-31: Version 3.26.0
2638 Deprecate Start/StopCpuProfiling methods (issue 3213).
2640 Don't crash if we get a timezone change notification on an uninitialized
2641 isolate (Chromium issue 357362).
2643 Performance and stability improvements on all platforms.
2646 2014-03-28: Version 3.25.30
2648 NativeContext::map_cache reference should be strong in heap snapshots
2649 (Chromium issue 357060).
2651 Performance and stability improvements on all platforms.
2654 2014-03-27: Version 3.25.29
2656 Performance and stability improvements on all platforms.
2659 2014-03-27: Version 3.25.28
2661 Performance and stability improvements on all platforms.
2664 2014-03-26: Version 3.25.27
2666 Promise constructor should not be enumerable (Chromium issue 352597).
2668 Performance and stability improvements on all platforms.
2671 2014-03-26: Version 3.25.26
2673 Performance and stability improvements on all platforms.
2676 2014-03-25: Version 3.25.25
2678 Roll ICU 239289:258359 and add support for external ICU data tables
2679 (issue 3142, Chromium issue 72633).
2681 Performance and stability improvements on all platforms.
2684 2014-03-25: Version 3.25.24
2686 Add support for per-isolate private symbols.
2688 No longer OOM on invalid string length (issue 3060).
2690 Remove Failure::OutOfMemory propagation and
2691 V8::IgnoreOutOfMemoryException (issue 3060).
2693 Tentative Windows dll build fix: Don't V8_EXPORT ScriptCompiler::Source
2696 Performance and stability improvements on all platforms.
2699 2014-03-24: Version 3.25.23
2701 Rename A64 port to ARM64 port (Chromium issue 354405).
2703 Fix missing access check in Runtime_SetPrototype (Chromium issue
2706 Fix polymorphic hydrogen handling of SLOPPY_ARGUMENTS_ELEMENTS (Chromium
2709 Performance and stability improvements on all platforms.
2712 2014-03-20: Version 3.25.22
2714 Increase the "local variables in a function" limit (issue 3205).
2716 Implement ES6 symbol registry and predefined symbols.
2718 Throw exception on invalid string length instead of OOM (Chromium issue
2721 Performance and stability improvements on all platforms.
2724 2014-03-20: Version 3.25.21
2726 Performance and stability improvements on all platforms.
2729 2014-03-20: Version 3.25.20
2731 Fix polymorphic keyed loads for SLOPPY_ARGUMENTS_ELEMENTS (Chromium
2734 Performance and stability improvements on all platforms.
2737 2014-03-19: Version 3.25.19
2739 Performance and stability improvements on all platforms.
2742 2014-03-19: Version 3.25.18
2744 Performance and stability improvements on all platforms.
2747 2014-03-19: Version 3.25.17
2749 Performance and stability improvements on all platforms.
2752 2014-03-18: Version 3.25.16
2754 Apply numeric casts correctly in typed arrays and related code (Chromium
2757 Performance and stability improvements on all platforms.
2760 2014-03-18: Version 3.25.15
2762 Don't generate keyed store ICs for global proxies (Chromium issue
2765 MIPS: Make invalid LHSs a parse-time (reference) error (Chromium issue
2768 Make invalid LHSs a parse-time (reference) error (Chromium issue
2771 Add Promises/A+ Compliance Test Suite (Chromium issue 347095).
2773 Split Promise API into Promise/Resolver.
2775 Performance and stability improvements on all platforms.
2778 2014-03-17: Version 3.25.14
2780 Performance and stability improvements on all platforms.
2783 2014-03-17: Version 3.25.13
2785 Move profiler callback interfaces from v8.h to v8-profiler.h.
2787 Performance and stability improvements on all platforms.
2790 2014-03-14: Version 3.25.12
2792 PromiseCoerce should deal with an error during accessing "then"
2793 (Chromium issue 347095).
2795 Propagate updated offsets in BoundsCheckBbData (Chromium issue 350863).
2797 Add regression test for range analysis bug (issue 3204).
2799 Continued fix for 351257. Reusing the feedback vector is too complex
2800 (Chromium issue 351257).
2802 StopCpuProfiling should return non-const CpuProfile (issue 3213).
2804 Allow for compiling with xcode 5.1 (which doesn't have gcc anymore).
2806 Performance and stability improvements on all platforms.
2809 2014-03-14: Version 3.25.11
2811 MIPS: Remove uses of CanBeNegative() in HMod (issue 3204).
2813 MIPS: Remove uses of RangeCanInclude() in flooring division by power of
2816 MIPS: Fix uses of range analysis results in HChange (issue 3204).
2818 Make translation of modulus operation '--stress-opt'-proof (Chromium
2821 Remove uses of CanBeNegative() in HMod (issue 3204).
2823 Remove uses of RangeCanInclude() in flooring division by power of 2
2826 Fix uses of range analysis results in HChange (issue 3204).
2828 Performance and stability improvements on all platforms.
2831 2014-03-14: Version 3.25.10
2833 This version was not committed due to script failures.
2836 2014-03-13: Version 3.25.9
2838 Reland "Enable Object.observe by default" again (issue 2409).
2840 Use intrinsics for builtin ArrayBuffer property accesses (Chromium issue
2843 Performance and stability improvements on all platforms.
2846 2014-03-12: Version 3.25.8
2848 Fix HIsSmiAndBranch::KnownSuccessorBlock() by deleting it (Chromium
2851 Fix handling of polymorphic array accesses with constant index (Chromium
2854 Fix lazy deopt after tagged binary ops (Chromium issue 350434).
2856 MIPS: Cleanup some of the range uses in ModI/DivI (issue 3204).
2858 Fix issue with getOwnPropertySymbols and hidden properties (Chromium
2861 Cleanup some of the range uses in ModI/DivI (issue 3204).
2863 PromiseCoerce should ignore primitive values (Chromium issue 347095).
2865 Use a per-isolate cache for the date object JS bits (Chromium issue
2868 Performance and stability improvements on all platforms.
2871 2014-03-11: Version 3.25.7
2873 Promise.all and Promise.race should reject non-array parameter (Chromium
2876 Promise.all and Promise race should use "then" rather than "chain"
2877 (Chromium issue 347427).
2879 Merge the "Compute Minus Zero Checks" phase into the range analysis
2882 Performance and stability improvements on all platforms.
2885 2014-03-10: Version 3.25.6
2887 Replace the recursion in PropagateMinusZeroChecks() with a loop and a
2888 worklist (issue 3204).
2890 Reland "Enable Object.observe by default" (issue 2409).
2892 Enable Object.observe by default (issue 2409).
2894 AllocationTracker now maintains a map from address range to stack trace
2895 that allocated the range. When snapshot is generated the map is used to
2896 find construction stack trace for an object using its address (Chromium
2899 Introduce Runtime_GetAllScopesDetails to get all scopes at once for a
2900 frame (Chromium issue 340285).
2902 Reduce heavy runtime calls from debug mirrors (Chromium issue 340285).
2904 Check and clear date cache in DateCurrentTime, DateLocalTimezone and
2905 getTimezoneOffset (Chromium issue 142141).
2907 Performance and stability improvements on all platforms.
2910 2014-03-06: Version 3.25.5
2912 Fix HConstants with Smi-ranged HeapNumber values (Chromium issue
2915 Fix issues with JSON stringify replacer array (issues 3200, 3201).
2917 Performance and stability improvements on all platforms.
2920 2014-03-05: Version 3.25.4
2922 x64: Fix LMathMinMax for constant Smi right-hand operands (Chromium
2925 Performance and stability improvements on all platforms.
2928 2014-03-04: Version 3.25.3
2930 Clear optimized code cache in shared function info when code gets
2931 deoptimized (Chromium issue 343609).
2933 Fixed constant folding for Math.clz32 (Chromium issue 347906).
2935 Fix JSObject::PrintTransitions (Chromium issue 347912).
2937 Fix handling of constant global variable assignments (Chromium issue
2940 Removed bogus ASSERT (Chromium issue 347542).
2942 Mark HCompareMap as having Tagged representation (Chromium issue
2945 Fix crasher in Object.getOwnPropertySymbols (Chromium issue 346141).
2947 Fix the bit massaging code in CompleteParserRecorder::WriteNumber
2948 (Chromium issue 346221).
2950 Don't eliminate loads with incompatible types or representations
2951 (Chromium issue 346343).
2953 Check that after a weak callback, the handle is either dead or strong
2954 (Chromium issue 346061).
2956 Lazy preparsing vs. lazy parsing fix (Chromium issue 346207).
2958 Performance and stability improvements on all platforms.
2961 2014-02-25: Version 3.25.2
2963 Fix the bit massaging code in CompleteParserRecorder::WriteNumber
2964 (Chromium issue 346221).
2966 Revert r19455 "Load target types and handlers before IC computation."
2967 (Chromium issue 346149).
2969 Don't eliminate loads with incompatible types or representations
2970 (Chromium issue 346343).
2972 Fix for a smi stores optimization on x64 with a regression test
2973 (Chromium issue 345715).
2975 Check that after a weak callback, the handle is either dead or strong
2976 (Chromium issue 346061).
2978 negative bounds checking on realm calls (Chromium issue 344285).
2980 Lazy preparsing vs. lazy parsing fix (Chromium issue 346207).
2982 Fix optimistic BCE to back off after deopt (issue 3176).
2984 Performance and stability improvements on all platforms.
2987 2014-02-21: Version 3.25.1
2989 Performance and stability improvements on all platforms.
2992 2014-02-19: Version 3.25.0
2994 ES6: Tighten up Object.prototype.__proto__ (issue 3064).
2996 Fix Hydrogen bounds check elimination (Chromium issue 344186).
2998 Performance and stability improvements on all platforms.
3001 2014-02-19: Version 3.24.40
3003 A64: Let the MacroAssembler resolve branches to distant targets (issue
3006 Fixed and improved code for integral division. Fixed and extended tests
3009 MIPS: Fix assignment of function name constant (issue 3138).
3011 Fix assignment of function name constant (issue 3138).
3013 Performance and stability improvements on all platforms.
3016 2014-02-14: Version 3.24.39
3018 Introduce --job-based-sweeping flag and use individual jobs for sweeping
3019 if set (issue 3104).
3021 Performance and stability improvements on all platforms.
3024 2014-02-13: Version 3.24.38
3026 Merge experimental/a64 to bleeding_edge (issue 3113).
3028 Performance and stability improvements on all platforms.
3031 2014-02-12: Version 3.24.37
3033 Fix spec violations in JSON.stringify wrt replacer array (issue 3135).
3035 Performance and stability improvements on all platforms.
3038 2014-02-11: Version 3.24.36
3040 Fix inconsistencies wrt whitespaces (issue 3109).
3042 Performance and stability improvements on all platforms.
3045 2014-02-10: Version 3.24.35
3047 Fix inconsistencies wrt whitespaces (issue 3109).
3049 Performance and stability improvements on all platforms.
3052 2014-02-07: Version 3.24.34
3054 Performance and stability improvements on all platforms.
3057 2014-02-06: Version 3.24.33
3059 Allow externalizing strings in old pointer space (Chromium issue
3062 Performance and stability improvements on all platforms.
3065 2014-02-05: Version 3.24.32
3067 Add Box object to heap profiler.
3069 Check the offset argument of TypedArray.set for fitting into Smi
3070 (Chromium issue 340125).
3072 Performance and stability improvements on all platforms.
3075 2014-02-04: Version 3.24.31
3077 Fix short-circuiting logical and/or in HOptimizedGraphBuilder (Chromium
3080 Elements field of newly allocated JSArray could be left uninitialized in
3081 some cases (fast literal case) (Chromium issue 340124).
3083 Re-enable escape analysis.
3085 Performance and stability improvements on all platforms.
3088 2014-02-03: Version 3.24.30
3090 Performance and stability improvements on all platforms.
3093 2014-02-01: Version 3.24.29
3095 Performance and stability improvements on all platforms.
3098 2014-01-31: Version 3.24.28
3100 Don't crash in Array.join() if the resulting string exceeds the max
3101 string length (Chromium issue 336820).
3103 Implements ES6 String.prototype.normalize method (issue 2943).
3105 Performance and stability improvements on all platforms.
3108 2014-01-30: Version 3.24.27
3110 Performance and stability improvements on all platforms.
3113 2014-01-29: Version 3.24.26
3115 ES6: Map and Set needs to normalize minus zero (issue 3069).
3117 Make `String.prototype.{starts,ends}With` throw when passing a regular
3118 expression (issue 3070).
3120 Performance and stability improvements on all platforms.
3123 2014-01-28: Version 3.24.25
3125 Performance and stability improvements on all platforms.
3128 2014-01-27: Version 3.24.24
3130 MIPS: Reduce the stack requirements of GetNoCodeAgeSequence (issue
3133 Delete v8_shell target now that chrome uses d8 (Chromium issue 331585).
3135 ARM: Reduce the stack requirements of GetNoCodeAgeSequence (issue 3111).
3137 Performance and stability improvements on all platforms.
3140 2014-01-24: Version 3.24.23
3142 Performance and stability improvements on all platforms.
3145 2014-01-23: Version 3.24.22
3147 Fix compilation on x64 architectures (issue 3110).
3149 Ensure we don't overwrite transitions in SetPropertyIgnoreAttributes
3150 (Chromium issue 326155).
3152 ES6: Implement Object.setPrototypeOf (issue 2675).
3154 Fixed floor-of-div optimization (Chromium issue 334708).
3156 Performance and stability improvements on all platforms.
3159 2014-01-22: Version 3.24.21
3161 Performance and stability improvements on all platforms.
3164 2014-01-21: Version 3.24.20
3166 ES6: Implement Object.setPrototypeOf (issue 2675).
3168 Performance and stability improvements on all platforms.
3171 2014-01-20: Version 3.24.19
3173 Introduce a setting to control the toolset for which d8 is compiled
3176 Performance and stability improvements on all platforms.
3179 2014-01-17: Version 3.24.18
3181 Performance and stability improvements on all platforms.
3184 2014-01-16: Version 3.24.17
3186 Make cells pointing to JSObjects weak in optimized code (issue 2073).
3188 Performance and stability improvements on all platforms.
3191 2014-01-15: Version 3.24.16
3193 Annotate mapped memory regions for LeakSanitizer (Chromium issue
3196 Turn Runtime_MigrateInstance into Runtime_TryMigrateInstance (Chromium
3199 Performance and stability improvements on all platforms.
3202 2014-01-14: Version 3.24.15
3204 Introduce an API mirroring the gc extension.
3206 Performance and stability improvements on all platforms.
3209 2014-01-10: Version 3.24.14
3211 ES6: Add Object.getOwnPropertySymbols (issue 3049).
3213 Performance and stability improvements on all platforms.
3216 2014-01-09: Version 3.24.13
3218 Add Isolate parameter to HandleScope::NumberOfHandles (Chromium issue
3221 Removed v8::AssertNoGCScope.
3223 Performance and stability improvements on all platforms.
3226 2014-01-08: Version 3.24.12
3228 Correctly handle instances without elements in polymorphic keyed
3229 load/store (Chromium issue 331416).
3231 Fix selection of popular pages in store buffer (Chromium issue 331444).
3233 Prepare removal of ObjectTemplate::New without Isolate parameter
3234 (Chromium issue 324225).
3236 Performance and stability improvements on all platforms.
3239 2014-01-07: Version 3.24.11
3241 Remove generated makefiles on linux when running gyp_v8
3242 (Chromium issue 331475)
3244 Fix building d8 with readline support due to API changes
3246 Performance and stability improvements on all platforms.
3249 2014-01-03: Version 3.24.10
3251 Reland r18383: More API cleanup (Chromium issue 324225).
3253 MIPS: Fix loading of global object in LWrapReceiver (Chromium issue
3256 Performance and stability improvements on all platforms.
3259 2014-01-02: Version 3.24.9
3261 Performance and stability improvements on all platforms.
3264 2013-12-30: Version 3.24.8
3266 ARM: fix loading of global object in LWrapReceiver (Chromium issue
3269 Fix a race between concurrent recompilation and OSR (Chromium issue
3272 Turn off concurrent sweeping (issue 3071).
3274 Performance and stability improvements on all platforms.
3277 2013-12-23: Version 3.24.7
3279 Fix small spec violation in String.prototype.split (issue 3026).
3281 Correctly resolve forcibly context allocated parameters in debug-
3282 evaluate (Chromium issue 325676).
3284 Introduce Function::GetBoundFunction.
3286 Performance and stability improvements on all platforms.
3289 2013-12-20: Version 3.24.6
3291 Performance and stability improvements on all platforms.
3294 2013-12-19: Version 3.24.5
3296 Performance and stability improvements on all platforms.
3299 2013-12-18: Version 3.24.4
3301 Removed all stuff marked as V8_DEPRECATED.
3303 Performance and stability improvements on all platforms.
3306 2013-12-17: Version 3.24.3
3308 Performance and stability improvements on all platforms.
3311 2013-12-17: Version 3.24.2
3313 Flush instruction cache for deserialized code objects.
3315 Performance and stability improvements on all platforms.
3318 2013-12-13: Version 3.24.1
3320 Fix polymorphic inlined calls with migrating prototypes.
3322 Fixed global object leak caused by overwriting the global receiver (the
3323 global proxy) in the global object with the global object itself
3324 (Chromium issue 324812).
3326 Initialize Date parse cache with SMI instead of double to workaround
3327 sharing mutable heap numbers in snapshot (Chromium issue 280531).
3329 Switch armv7 setting to arm_version==7 in v8 gyp files (Chromium issue
3332 Performance and stability improvements on all platforms.
3335 2013-12-09: Version 3.24.0
3337 Performance and stability improvements on all platforms.
3340 2013-12-04: Version 3.23.18
3342 Performance and stability improvements on all platforms.
3345 2013-12-03: Version 3.23.17
3347 Performance and stability improvements on all platforms.
3350 2013-12-02: Version 3.23.16
3352 Array builtins need to be prevented from changing frozen objects, and
3353 changing structure on sealed objects (Chromium issue 299979).
3355 Performance and stability improvements on all platforms.
3358 2013-11-29: Version 3.23.15
3360 Fix context register allocation in LTransitionElementsKind
3361 (Chromium issue 324306).
3363 Fix bug in inlining Function.apply (Chromium issue 323942).
3365 Ensure that length is Smi in TypedArrayFromArrayLike constructor
3366 (Chromium issue 324028).
3368 Performance and stability improvements on all platforms.
3371 2013-11-28: Version 3.23.14
3373 Shorten autogenerated error message (issue 3019).
3375 Performance and stability improvements on all platforms.
3378 2013-11-27: Version 3.23.13
3380 Increase precision for base conversion for large integers (issue 3025).
3382 Flatten cons string for single character substrings (Chromium issue
3385 Performance and stability improvements on all platforms.
3388 2013-11-26: Version 3.23.12
3390 Performance and stability improvements on all platforms.
3393 2013-11-25: Version 3.23.11
3395 Deprecate old versions of Isolate::SetData and GetData.
3397 Performance and stability improvements on all platforms.
3400 2013-11-22: Version 3.23.10
3402 Remove preemption thread and API.
3405 Performance and stability improvements on all platforms.
3408 2013-11-21: Version 3.23.9
3410 API: Change AdjustAmountOfExternalAllocatedMemory calls to use int64_t
3411 instead of intptr_t.
3413 Remove deprecated v8::SetResourceConstraints without Isolate parameter.
3415 Remove deprecated v8-defaults.h and defaults.cc.
3416 (Chromium issue 312241)
3418 Make it possible to add more than one piece of embedder data to
3420 (Chromium issue 317398)
3422 Performance and stability improvements on all platforms.
3425 2013-11-20: Version 3.23.8
3427 Fixed crashes exposed though fuzzing.
3428 (Chromium issue 320948)
3430 Deprecated v8::External::New without Isolate parameter.
3432 Made number of available threads isolate-dependent and exposed it to
3433 ResourceConstraints.
3436 Performance and stability improvements on all platforms.
3439 2013-11-19: Version 3.23.7
3441 Bugfix: dependent code field in AllocationSite was keeping code objects
3442 alive even after context death.
3443 (Chromium issue 320532)
3445 Fixed data view accessors to throw execptions on offsets bigger than
3449 Performance and stability improvements on all platforms.
3452 2013-11-18: Version 3.23.6
3454 Limit size of dehoistable array indices.
3455 (Chromium issues 319835, 319860)
3457 Limit the size for typed arrays to MaxSmi.
3458 (Chromium issue 319722)
3460 Performance and stability improvements on all platforms.
3463 2013-11-15: Version 3.23.5
3465 Fixed missing type feedback check for Generic*String addition.
3466 (Chromium issue 318671)
3468 Fixed duplicate check in DependentCode::Insert.
3469 (Chromium issue 318454)
3471 Performance and stability improvements on all platforms.
3474 2013-11-14: Version 3.23.4
3476 Fixed overflow in TypedArray initialization function.
3477 (Chromium issue 319120)
3479 Performance and stability improvements on all platforms.
3482 2013-11-13: Version 3.23.3
3484 Fixed compilation with GCC 4.8.
3487 Added explicit Isolate parameter to External::New.
3488 (Chromium issue 266838)
3490 Performance and stability improvements on all platforms.
3493 2013-11-12: Version 3.23.2
3495 Fixed --extra-code flag for snapshot creation.
3498 Fixed error message wording when instanceof throws.
3499 (Chromium issue 82797, issue 1593)
3501 Performance and stability improvements on all platforms.
3504 2013-11-08: Version 3.23.1
3506 Made HCapturedObjects non-deletable for DCE. (issue 2987)
3508 Use a fixed random seed per default. (issue 1880, 2885)
3510 Fixed y-umlaut to uppercase. (issue 2984)
3512 Performance and stability improvements on all platforms.
3515 2013-11-06: Version 3.23.0
3517 Fixed loading message from an Error object. (Chromium issue 306220)
3519 Made Object.freeze/seal/preventExtensions observable. (issue 2975, 2941)
3521 Made snapshots reproducible. (issue 2885)
3523 Added missing negative dictionary lookup to NonexistentHandlerFrontend.
3526 Performance and stability improvements on all platforms.
3529 2013-10-31: Version 3.22.24
3531 Fixed uint32-to-smi conversion in Lithium.
3532 (Chromium issue 309623)
3534 Performance and stability improvements on all platforms.
3537 2013-10-28: Version 3.22.23
3539 Renamed deprecated __attribute__((no_address_safety_analysis)) to
3540 __attribute__((no_sanitize_address)) (Chromium issue 311283)
3542 Defined DEBUG for v8_optimized_debug=2
3544 Performance and stability improvements on all platforms.
3547 2013-10-25: Version 3.22.22
3549 Record allocation stack traces. (Chromium issue 277984,v8:2949)
3551 Performance and stability improvements on all platforms.
3554 2013-10-24: Version 3.22.21
3556 Performance and stability improvements on all platforms.
3559 2013-10-24: Version 3.22.20
3561 Made Array.prototype.pop throw if the last element is not configurable.
3563 Fixed HObjectAccess for loads from migrating prototypes.
3564 (Chromium issue 305309)
3566 Enabled preaging of code objects when --optimize-for-size.
3567 (Chromium issue 280984)
3569 Exposed v8::Function::GetDisplayName to public API.
3570 (Chromium issue 17356)
3572 Performance and stability improvements on all platforms.
3575 2013-10-23: Version 3.22.19
3577 Fix materialization of captured objects with field tracking.
3578 (Chromium issue 298990)
3580 Performance and stability improvements on all platforms.
3583 2013-10-22: Version 3.22.18
3585 Add tool to visualize machine code/lithium.
3587 Handle misaligned loads and stores in load elimination. Do not track
3588 misaligned loads and be conservative about invalidating misaligned
3589 stores. (issue 2934)
3591 Performance and stability improvements on all platforms.
3594 2013-10-21: Version 3.22.17
3596 Harmony: Implement Math.trunc and Math.sign. (issue 2938)
3598 Performance and stability improvements on all platforms.
3601 2013-10-21: Version 3.22.16
3603 Performance and stability improvements on all platforms.
3606 2013-10-18: Version 3.22.15
3608 Enabled calling the SetReference* & SetObjectGroupId functions with a
3609 Persistent<SubclassOfValue>.
3611 Performance and stability improvements on all platforms.
3614 2013-10-17: Version 3.22.14
3616 Performance and stability improvements on all platforms.
3619 2013-10-16: Version 3.22.13
3621 Do not look up ArrayBuffer on global object in typed array constructor.
3624 Performance and stability improvements on all platforms.
3627 2013-10-15: Version 3.22.12
3629 Added histograms to track fraction of heap spaces and percentage of
3630 generated crankshaft code.
3632 Moved v8_optimized_debug default value to standalone.gypi.
3634 Track JS allocations as they arrive with no affection on performance
3635 when tracking is switched off (Chromium issue 277984).
3637 Performance and stability improvements on all platforms.
3640 2013-10-14: Version 3.22.11
3642 Performance and stability improvements on all platforms.
3645 2013-10-11: Version 3.22.10
3647 Fixed timezone issues with date-time/parse-* tests.
3648 (Chromium issue 2919)
3650 Added column getter to CpuProfileNode (Chromium issue 302537)
3652 Performance and stability improvements on all platforms.
3655 2013-10-10: Version 3.22.9
3657 Ensure only whitelisted stubs have sse2 versions in the snapshot.
3658 (fix for chromium 304565)
3660 Implement ArrayBuffer.isView.
3662 Performance and stability improvements on all platforms.
3665 2013-10-04: Version 3.22.8
3667 Performance and stability improvements on all platforms.
3670 2013-10-03: Version 3.22.7
3672 Debug: Allow stepping into on a given call frame
3673 (Chromium issue 296963).
3675 Always use timeGetTime() for TimeTicks::Now() on Windows
3676 (Chromium issue 288924).
3678 Performance and stability improvements on all platforms.
3681 2013-10-02: Version 3.22.6
3683 Performance and stability improvements on all platforms.
3686 2013-10-01: Version 3.22.5
3688 Disabled externalization of sliced/cons strings in old pointer space
3689 (Chromium issue 276357).
3691 Turned on handle zapping for release builds
3693 Performance and stability improvements on all platforms.
3696 2013-09-30: Version 3.22.4
3698 Function::Call and Object::CallAsFunction APIs should allow v8::Value as
3699 a receiver (issue 2915).
3701 Removed unnecessary mutex (Chromium issue 291236).
3703 Removed ArrayBufferView::BaseAddress method.
3705 Performance and stability improvements on all platforms.
3708 2013-09-27: Version 3.22.3
3710 Added methods to enable configuration of ResourceConstraints based on
3711 limits derived at runtime.
3712 (Chromium issue 292928)
3714 Added -optimize-for-size flag to optimize for memory size (will be used
3715 by pre-aging CL), and removed the is_memory_constrained
3717 (Chromium issue 292928)
3719 Performance and stability improvements on all platforms.
3722 2013-09-26: Version 3.22.2
3724 Performance and stability improvements on all platforms.
3727 2013-09-25: Version 3.22.1
3729 Sped up creating typed arrays from array-like objects.
3730 (Chromium issue 270507)
3732 Performance and stability improvements on all platforms.
3735 2013-09-23: Version 3.22.0
3737 LiveEdit to mark more closure functions for re-instantiation when scope
3741 Made bounds check elimination iterative instead of recursive.
3742 (Chromium issue 289706)
3744 Turned on i18n support by default.
3746 Set the proper instance-type on HAllocate in BuildFastLiteral.
3747 (Chromium issue 284577)
3749 Performance and stability improvements on all platforms.
3752 2013-09-18: Version 3.21.17
3754 Implemented local load/store elimination on basic blocks.
3756 Added mutex when accessing concurrent recompilation output queue.
3757 (Chromium issue 291236)
3759 Don't lookup the cache for the result of Function::New.
3760 (Chromium issue 272579)
3762 Tweaked HConstant::EmitAtUses() to eliminate useless constant
3764 (Chromium issue 2881)
3766 Performance and stability improvements on all platforms.
3769 2013-09-16: Version 3.21.16
3771 Every place where AllocationMemento is initialized with an
3772 AllocationSite is now checked to be sure a valid Site goes in. This is
3773 temporary code to diagnose chromium bug 284577.
3775 Performance and stability improvements on all platforms.
3778 2013-09-13: Version 3.21.15
3780 Non-JSObject heap objects are now handled using slow-path IC stub
3782 (Chromium issue 280632)
3784 i18n Javascript code added to the snapshot.
3787 Performance and stability improvements on all platforms.
3789 2013-09-12: Version 3.21.14
3791 Added access check for observed objects.
3794 Cleaned up v8::ArrayBuffer::Allocator interface.
3797 Performance and stability improvements on all platforms.
3799 2013-09-11: Version 3.21.13
3801 Added a ResourceConstraint for the embedder to specify that V8 is
3802 running on a memory constrained device.
3803 (Chromium issue 280984)
3805 Removed HandleScope default ctor.
3806 (Chromium issue 236173)
3808 Enabled escape analysis for Hydrogen.
3810 Correctly stringified mixed encoding indirect strings.
3811 (Chromium issue 287476)
3813 Performance and stability improvements on all platforms.
3816 2013-09-09: Version 3.21.12
3818 Fixed bitwise negation on x64.
3819 (Chromium issue 285355)
3821 Dropped GetCurrentThreadId() and TerminateExecution(int) from
3824 Fixed polymorphic INTERCEPTOR StoreICs on ARM/MIPS.
3825 (Chromium issue 284998)
3827 Added check if timeout has expired after processing each sample.
3828 (issue 2814,v8:2871)
3830 Removed obsolete global V8::has_been_fooed flags.
3833 Performance and stability improvements on all platforms.
3836 2013-09-05: Version 3.21.11
3838 Performance and stability improvements on all platforms.
3841 2013-09-04: Version 3.21.10
3843 Fixed Eternal::IsEmpty logic (issue 2870).
3845 Performance and stability improvements on all platforms.
3848 2013-09-03: Version 3.21.9
3850 Deprecated Persistent functions which were marked to be deprecated.
3852 Allowed uncacheable identifiers to go generic (issue 2867).
3854 Performance and stability improvements on all platforms.
3857 2013-09-02: Version 3.21.8
3859 Added scriptId to StackTrace frames (issue 2865).
3861 Performance and stability improvements on all platforms.
3864 2013-08-30: Version 3.21.7
3866 Fixed casts of eternal handles.
3868 Turned on global handle zapping.
3870 Always visit branches during HGraph building (Chromium issue 280333).
3872 Profiler changes: removed deprecated API, support higher sampling
3875 Performance and stability improvements on all platforms.
3878 2013-08-29: Version 3.21.6
3880 Fixed inlined 'throw' statements interfering with live range
3881 computation. (issue 2843)
3883 Performance and stability improvements on all platforms.
3886 2013-08-28: Version 3.21.5
3888 Fixed compilation with recent MinGW64 versions. (issue 2300)
3890 Added RemovePrototype to FunctionTemplate. (Chromium issue 272440)
3892 Performance and stability improvements on all platforms.
3895 2013-08-26: Version 3.21.4
3897 Lowered kInitialMaxFastElementArray constant to 95K (issue 2790).
3899 Use signals for cpu profiling on Mac OS X (issue 2814).
3901 Deprecated CpuProfileNode::GetSelfSamplesCount (Chromium issue 267595).
3903 Added support for higher CPU profiler sampling rate on posix systems
3906 Worked around 'inlining failed' build error with older GCC 4.x releases.
3908 Added source map support to tick processor.
3910 Stability improvements on all platforms.
3913 2013-08-23: Version 3.21.3
3915 Temporarily disabled optimization for StringWrappers to use native
3916 valueOf. (issue 2855)
3918 Fixed crash on function declarations in eval inside non-trivial local
3921 Rewrote SamplingCircularQueue. (issue 2814)
3923 Fixed hidden properties on object with frozen prototype. (issue 2829)
3925 Fix deoptimization bug. (Chromium issue 274164)
3927 Stability improvements on all platforms.
3930 2013-08-22: Version 3.21.2
3932 Stability improvements on all platforms.
3935 2013-08-21: Version 3.21.1
3937 Promoted ArrayBuffer, DataView and typed arrays to non-experimental.
3938 (Chromium issue 270527)
3940 Replaced OS::MemCopy with memcpy in typed array initialization.
3941 (Chromium issue 270642)
3943 Moved i18n break iterator C++ code to runtime (issue 2745)
3945 Fixed invalid out-of-bounds store in MacroAssembler::Allocate.
3946 (Chromium issue 263515)
3948 Fixed register misuse in Allocate() on ARM. (issue 2851)
3950 Fixed empty handle dereference in Runtime_InternalNumberFormat.
3951 (Chromium issue 275467)
3953 Performance and stability improvements on all platforms.
3956 2013-08-19: Version 3.21.0
3958 Fixed GC-related crasher (Chromium issue 274438)
3960 Reverted making Intl non-enumerable.
3962 Performance and stability improvements on all platforms.
3965 2013-08-14: Version 3.20.17
3967 Fixed Math.round/floor that had bogus Smi representation
3968 (Chromium issue 272564)
3970 Performance and stability improvements on all platforms.
3973 2013-08-13: Version 3.20.16
3975 Fixed bug in HPhi::SimplifyConstantInput (Chromium issue 269679)
3977 Fixed gcmole bugs in i18n code (issue 2745)
3979 ia32: Calls to the TranscendentalCacheStub must ensure that esi is
3982 Made sure polymorphic element access creates non-replaying
3985 Allowed HPhis to have an invalid merge index. (issue 2815)
3987 Fixed smi-based math floor. (Chromium issue 270268)
3989 Deprecated self and total time getters and total sample count
3990 getter on CpuProfileNode. (Chromium issue 267595)
3992 Fixed Object.freeze, Object.observe wrt CountOperation and
3993 CompoundAssignment. (issue 2774,2779)
3995 Performance and stability improvements on all platforms.
3998 2013-08-07: Version 3.20.15
4000 Exposed eternal handle api.
4002 Bugfix to solve issues with enabling V8 typed arrays in Blink.
4004 Fixed Array index dehoisting. (Chromium issue 264203)
4006 Updated Array Iterator to use numeric indexes (issue 2818)
4008 Return start/end profiling time in microseconds instead of milliseconds
4011 Performance and stability improvements on all platforms.
4014 2013-08-06: Version 3.20.14
4016 Added new Harmony methods to Array.prototype object.
4017 (issue 2776,v8:2777)
4019 Performance and stability improvements on all platforms.
4022 2013-08-01: Version 3.20.12
4024 Removed buggy ToNumber truncation (partial fix for issue 2813)
4026 Calling Map etc without new should throw TypeError (issue 2819)
4028 Fixed a crash for large code objects on ARM (Chromium issue 2736)
4030 Fixed stale unhandlified value in JSObject::SetPropertyForResult.
4031 (Chromium issue 265894)
4033 Added new Harmony methods to String.prototype object.
4034 (issue 2796,v8:2797,v8:2798,v8:2799)
4036 Performance and stability improvements on all platforms.
4039 2013-07-30: Version 3.20.11
4041 Performance and stability improvements on all platforms.
4044 2013-07-29: Version 3.20.10
4046 Performance and stability improvements on all platforms.
4049 2013-07-26: Version 3.20.9
4051 Check that ExternalString objects get aligned resources.
4053 Fixed JSArray-specific length lookup in polymorphic array handling
4054 (Chromium issues 263276, 263905).
4056 Performance and stability improvements on all platforms.
4059 2013-07-24: Version 3.20.8
4061 Deprecated v8::V8::Pause/ResumeProfiler.
4063 Fixed Chromium issues 247688, 258519 and 260203.
4065 Performance and stability improvements on all platforms.
4068 2013-07-22: Version 3.20.7
4070 Deprecated some debugger methods.
4072 Fixed wrong bailout id in polymorphic stores (Chromium issue 259787).
4074 Fixed data race in SamplingCircularQueue (Chromium issue 251218).
4076 Fixed type feedback in presence of negative lookups
4077 (Chromium issue 252797).
4079 Do not materialize context-allocated values for debug-evaluate
4080 (Chromium issue 259300).
4082 Synchronized Compare-Literal behavior in FullCodegen and Hydrogen
4083 (Chromium issue 260345).
4085 Performance and stability improvements on all platforms.
4088 2013-07-17: Version 3.20.6
4090 Try to remove invalidated stubs before falling back to checking the
4091 constant state (Chromium issue 260585).
4093 Fixed gyp_v8 to work with use_system_icu=1 (issue 2475).
4095 Fixed sloppy-mode 'const' under Harmony flag (Chromium issue 173361).
4097 Use internal array as API function cache (Chromium issue 260106).
4099 Fixed possible stack overflow in range analysis
4100 (Chromium issue 259452).
4102 Performance and stability improvements on all platforms.
4105 2013-07-15: Version 3.20.5
4107 Ensured that the length of frozen arrays is immutable
4108 (issue 2711, Chromium issue 259548).
4110 Performance and stability improvements on all platforms.
4113 2013-07-10: Version 3.20.4
4115 Fixed garbage-collection issue that causes a crash on ARM
4116 (Chromium issue 254570)
4118 Performance and stability improvements on all platforms.
4121 2013-07-08: Version 3.20.3
4123 Performance and stability improvements on all platforms.
4126 2013-07-05: Version 3.20.2
4128 Remove deprecated heap profiler methods from V8 public API
4130 Mark i18n functions as native and set proper names
4133 Correctly report stack trace when current function is FunctionApply
4134 builtin (Chromium issue 252097)
4136 Enable GDBJIT interface for standalone by default.
4138 Fix debuggersupport=off build. (issue 2754)
4140 Introduce -m64 flag for making x64 when the default gcc compiler is for
4143 Performance and stability improvements on all platforms.
4146 2013-07-02: Version 3.20.1
4148 Implemented WeakMap.prototype.clear function. (issue 2753)
4150 Ensure CheckInitialized is present independent of define.
4151 (Chromium issue 255779)
4153 Performance and stability improvements on all platforms.
4156 2013-06-28: Version 3.20.0
4158 Migrated several tests from blink to V8 repository.
4160 Allowed users of the V8 API to distinguish between unset and undefined
4161 HiddenValues (issue 2746).
4163 Deprecated old style callbacks in the V8 API.
4165 Turned on parallel recompilation.
4167 Performance and stability improvements on all platforms.
4170 2013-06-18: Version 3.19.18
4172 Fixed read-only attribute of Function.length in strict mode.
4175 Fixed Runtime_SetProperty to properly handle OOM failures
4176 (Chromium issue 249873)
4178 Emit deprecated check for constant function transitions.
4179 (Chromium issue 250609)
4181 Made MathFloorOfDiv optimization trigger more often
4184 Make more GCs in idle notification handler.
4185 (Chromium issue 241815)
4187 Increased default type info threshold.
4190 Performance and stability improvements on all platforms.
4193 2013-06-14: Version 3.19.16
4195 Performance and stability improvements on all platforms.
4198 2013-06-13: Version 3.19.15
4200 Performance and stability improvements on all platforms.
4203 2013-06-13: Version 3.19.14
4205 Fixed crashes when calling new Array(a) with a single argument that
4206 could result in creating a holey array with a packed elements kind.
4207 (Chromium issue 245480)
4209 Fixed issues in parallel compilation.
4210 (Chromium issue 248076)
4212 Performance and stability improvements on all platforms.
4215 2013-06-11: Version 3.19.13
4217 Performance and stability improvements on all platforms.
4220 2013-06-10: Version 3.19.12
4222 Fixed arguments array access. (Chromium issue 247303)
4224 Fixed bug in LookupForWrite. (Chromium issue 242332)
4226 Performance and stability improvements on all platforms.
4229 2013-06-07: Version 3.19.11
4231 Performance and stability improvements on all platforms.
4234 2013-06-06: Version 3.19.10
4236 Performance and stability improvements on all platforms.
4239 2013-06-05: Version 3.19.9
4241 Implemented Load IC support for loading properties from primitive
4242 values to avoid perpetual soft deopts. (Chromium issue 242512)
4244 Implemented Freeing of PerThreadAssertData when possible to avoid
4245 memory leak. (Chromium issue 246567)
4247 Removed V8_USE_OLD_STYLE_PERSISTENT_HANDLE_VISITORS.
4249 Performance and stability improvements on all platforms.
4252 2013-06-03: Version 3.19.8
4254 Fixed bug with inlining 'Array' function. (Chromium issue 244461)
4256 Fixed initialization of literal objects. (Chromium issue 245424)
4258 Fixed function name inferred inside closures. (Chromium issue 224884)
4260 Performance and stability improvements on all platforms.
4263 2013-05-31: Version 3.19.7
4265 Added support for //# sourceURL similar to deprecated //@ sourceURL one.
4268 Made sure IfBuilder::Return clears the current block.
4269 (Chromium issue 243868)
4271 Fixed two CPU profiler tests on ARM and MIPS simulators
4274 Fixed idle incremental GC for large objects.
4275 (Chromium issue 241815)
4277 Disabled --optimize-constructed-arrays due to crashes
4278 (Chromium issue 244461)
4280 Performance and stability improvements on all platforms.
4283 2013-05-28: Version 3.19.6
4285 Fixed IfBuilder::Deopt to clear the current block
4286 (Chromium issue 243868).
4288 Performance and stability improvements on all platforms.
4291 2013-05-27: Version 3.19.5
4293 Reset regexp parser flag after scanning ahead for capture groups.
4296 Removed flakiness in test-cpu-profiler/SampleWhenFrameIsNotSetup.
4299 Performance and stability improvements on all platforms.
4302 2013-05-24: Version 3.19.4
4304 Fixed edge case in stack trace formatting. (Chromium issue 237617)
4306 Fixed embedded new-space pointer in LCmpObjectEqAndBranch. (Chromium
4309 Made Object.freeze fast (issue 1858, Chromium issue 115960)
4311 Fixed bogus deopt in BuildEmitDeepCopy for holey arrays. (Chromium issue
4314 Performance and stability improvements on all platforms.
4317 2013-05-22: Version 3.19.3
4319 Performance and stability improvements on all platforms.
4322 2013-05-17: Version 3.19.2
4324 Fill in one-word-fillers for the unused property fields
4325 (Chromium issue 240056).
4327 Removed use_system_v8 logic from the mainline gyp file
4328 (Chromium issue 226860).
4330 Skip CPU profiler samples where top function's stack frame is not
4331 set up properly (issue 2628).
4333 Performance and stability improvements on all platforms.
4336 2013-05-14: Version 3.19.1
4338 Fixed missing hole check for loads from Smi arrays when all uses are
4339 changes (Chromium issue 233737)
4341 Performance and stability improvements on all platforms.
4344 2013-05-10: Version 3.19.0
4346 Deprecated Context::New which returns Persistent.
4348 Added Persistent<T>::Reset which disposes the handle and redirects it to
4349 point to another object.
4351 Deprecated WriteAscii and MayContainNonAscii.
4353 Exposed AssertNoAllocation to API.
4355 Performance and stability improvements on all platforms.
4358 2013-04-30: Version 3.18.5
4360 Allowed setting debugger breakpoints on CompareNilICs (issue 2660)
4362 Fixed beyond-heap load on x64 Crankshafted StringCharFromCode
4363 (Chromium issue 235311)
4365 Change 'Parse error' to three more informative messages.
4366 (Chromium issue 2636)
4368 Performance and stability improvements on all platforms.
4371 2013-04-26: Version 3.18.4
4373 Added a preliminary API for ES6 ArrayBuffers
4375 Replaced qsort with std::sort. (Chromium issue 2639)
4377 Performance and stability improvements on all platforms.
4380 2013-04-24: Version 3.18.3
4382 Exposed the GC under a name that is less collision prone than window.gc.
4385 Do not emit double values at their use sites. (Chromium issue 234101)
4387 Added methods to allow resuming execution after calling
4388 TerminateExecution(). (issue 2361)
4390 Performance and stability improvements on all platforms.
4393 2013-04-22: Version 3.18.2
4395 OS::MemMove/OS::MemCopy: Don't call through to generated code when size
4396 == 0 to avoid prefetching invalid memory (Chromium issue 233500)
4398 Removed heap snapshot size limit. (Chromium issue 232305)
4400 Performance and stability improvements on all platforms.
4403 2013-04-18: Version 3.18.1
4405 Removed SCons related files and deprecated test suite configurations.
4407 Improved handling of unary plus (issue 2527).
4409 Performance and stability improvements on all platforms.
4412 2013-04-17: Version 3.18.0
4414 Enabled pretenuring of fast literals in high promotion mode.
4416 Removed preparser library; link preparser executable against full V8.
4418 Fixed set-up of intrinsic's 'constructor' properties.
4419 (Chromium issue 229445)
4421 ES6 symbols: extended V8 API to support symbols (issue 2158).
4423 Removed ARM support for VFP2.
4425 Made __proto__ a real JavaScript accessor property.
4426 (issue 1949 and issue 2606)
4428 Performance and stability improvements on all platforms.
4431 2013-04-04: Version 3.17.16
4433 Stack trace API: poison stack frames below the first strict mode frame.
4436 Made Isolate::GetHeapStatistics robust against half-initialized
4437 isolates (Chromium issue 2591).
4439 Finished implementation of ES6 symbols aka. private names (issue 2158).
4441 Performance and stability improvements on all platforms.
4444 2013-03-21: Version 3.17.15
4446 Rolled back API changes to maintain compatibility with older
4447 3.17.x versions of V8.
4449 Disable zapping of global handles in release mode.
4451 Always mark the entire valid prefix of the descriptor array.
4452 (Chromium issue 196331)
4454 Use internal memcpy for CopyWords and when copying code.
4455 (Chromium issue 196330)
4457 Performance and stability improvements on all platforms.
4460 2013-03-20: Version 3.17.14
4462 Use internal memcpy when initializing code objects.
4463 (Chromium issue 196330)
4465 Disabled weak embedded maps because of crashes.
4466 (Chromium issues 172489, 217858)
4468 Performance and stability improvements on all platforms.
4471 2013-03-19: Version 3.17.13
4473 Turned Flags into a uint32_t typedef (Chromium issue 194749).
4475 Performance and stability improvements on all platforms.
4478 2013-03-18: Version 3.17.12
4480 Unified kMaxArguments with number of bits used to encode it.
4481 (Chromium issue 211741)
4483 Fixed detection of |handle_smi| case in
4484 HOptimizedGraphBuilder::HandlePolymorphicCallNamed.
4485 (Chromium issue 196583)
4487 Performance and stability improvements on all platforms.
4490 2013-03-15: Version 3.17.11
4492 Added a version of the v8::HandleScope constructor with an v8::Isolate
4493 parameter and made AdjustAmountOfExternalAllocatedMemory an instance
4494 method of v8::Isolate.
4497 Fixed two register allocator bugs (off-by-one error/failure
4498 propagation). (issue 2576)
4500 Fixed huge heap snapshot when a heavily shared context has many
4501 variables. (Chromium issue 145687)
4503 Performance and stability improvements on all platforms.
4506 2013-03-13: Version 3.17.10
4508 Fixed heap snapshot creation for Harmony collections. (issue 2535)
4510 Fixed register allocation corner case. (Chromium issue 177883)
4512 Performance and stability improvements on all platforms.
4515 2013-03-08: Version 3.17.9
4517 Restored Function()'s expected string representation. (issue 2470)
4519 Enabled deprecatations (again). (issue 2487)
4521 Avoid bool to Oddball conversions by being lazy. (issue 2491)
4523 Added %p option to --logfile.
4525 Hardened Function()'s parsing of function literals. (issue 2470)
4527 ES6 symbols: Refine test for getOwnPropertyNames. (issue 2158)
4529 Performance and stability improvements on all platforms.
4532 2013-03-07: Version 3.17.8
4534 Added missing license headers. (Chromium issue 98597)
4536 Inserted missing type cast in JSON.stringify. (issue 2570)
4538 Reverted "Send SIGPROF signals on the profiler event processor thread"
4541 Fixed Array.length, String.length and Function.prototype LoadICs on x64.
4544 ES6 symbols: filter symbols form for-in loops and Object.keys.
4547 Properly handle misses for StoreArrayLengthStub on ia32 and x64
4550 Fixed x32 handling of Atomic64. (Chromium issue chromium-os:36866)
4552 Removed "library" variable from standalone.gypi. (Chromium issue 111541)
4554 Fixed HCheckSmiOrInt <-> HBoundsCheck interaction wrt. representations.
4557 Enabled zapping of disposed global handles in release mode.
4558 (Chromium issue 176056)
4560 Added workaround for redefinition of __proto__ property. (issue 2565)
4562 ES6 symbols: Allow symbols as property names. (issue 2158)
4564 Performance and stability improvements on all platforms.
4567 2013-03-04: Version 3.17.7
4569 Limited recursion in regexp compilation by a budget.
4570 (Chromium issue 178790)
4572 ES6 symbols: Implemented Symbol intrinsic and basic functionality
4575 Performance and stability improvements on all platforms.
4578 2013-02-28: Version 3.17.6
4580 Fixed materialization of arguments objects with unknown values.
4581 (Chromium issue 163530)
4583 Set default number of sweeper threads to at most four.
4585 Performance and stability improvements on all platforms.
4588 2013-02-27: Version 3.17.5
4590 Made __proto__ a foreign callback on Object.prototype.
4591 (issue 621, issue 1949 and issue 2441)
4593 Performance and stability improvements on all platforms.
4596 2013-02-25: Version 3.17.4
4598 Performance and stability improvements on all platforms.
4601 2013-02-21: Version 3.17.3
4603 Performance and stability improvements on all platforms.
4606 2013-02-19: Version 3.17.2
4608 Removed bogus check for TOP register in deoptimizer.
4609 (Chromium issue 176943)
4611 Made the Isolate parameter mandatory for internal HandleScopes.
4614 Fixed f.apply() optimization when declared arguments are mutated.
4617 Performance and stability improvements on all platforms.
4620 2013-02-14: Version 3.17.1
4622 Performance and stability improvements on all platforms.
4625 2013-02-13: Version 3.17.0
4627 Enabled parallel sweeping.
4629 Don't try to unlink instructions twice during GVN
4630 (Chromium issue 175141)
4632 Fixed code flusher disabling while marking incrementally.
4633 (Chromium issue 173458, 168582)
4635 Don't use TLS for space iterators.
4638 Added new GetHeapStatistics API entry and deprecated old one.
4640 Fixed DoubleStackSlot-to-DoubleStackSlot moves on ia32. Unified
4641 platform-independent code.
4642 (Chromium issue 173907)
4644 Added --trace-array-abuse to help find OOB accesses.
4646 Performance and stability improvements on all platforms.
4649 2013-02-06: Version 3.16.14
4651 Performance and stability improvements on all platforms.
4654 2013-02-04: Version 3.16.13
4656 Tagged stubs that rely on instance types as MEGAMORPHIC.
4657 (Chromium issue 173974)
4659 Fixed clearing of dead dependent codes and verifing of weak
4660 embedded maps on full GC. (Chromium issue 172488,172489)
4662 Made the arm port build cleanly with Clang.
4664 Performance and stability improvements on all platforms.
4667 2013-01-31: Version 3.16.12
4669 Performance and stability improvements on all platforms.
4672 2013-01-30: Version 3.16.11
4674 Put making embedded maps in optimized code weak behind a flag.
4675 (Chromium issue 172488,172489)
4677 Performance and stability improvements on all platforms.
4680 2013-01-25: Version 3.16.10
4682 Avoid excessive memory usage during redundant phi elimination.
4685 Fixed additional spec violations wrt RegExp.lastIndex.
4688 Added Isolate parameter to Persistent class.
4691 Performance and stability improvements on all platforms.
4694 2013-01-24: Version 3.16.9
4696 Made embedded maps in optimized code weak.
4699 Fixed corner case when JSFunction is evicted from flusher.
4700 (Chromium issue 168801)
4702 Correctly set kCanBeDivByZero flag for HMathFloorOfDiv.
4703 (Chromium issue 171641)
4705 Performance and stability improvements on all platforms.
4708 2013-01-23: Version 3.16.8
4710 Correctly reset lastIndex in an RegExp object.
4711 (Chromium issue 170856)
4713 Added a workaround for Windows compilation problems related to V8EXPORT.
4716 tools/run-tests.py: shlex.split() the value of --command-prefix
4717 (Chromium issue 171553)
4719 Fixed pattern detection for replacing shifts by rotation.
4720 (Chromium issue 2499)
4722 Performance and stability improvements on all platforms.
4725 2013-01-21: Version 3.16.7
4727 Removed <(library) usage from v8.gyp.
4728 (Chromium issue 111541)
4730 Fixed out of bounds memory access in TestJSArrayForAllocationSiteInfo.
4731 (Chromium issue 169928)
4733 Performance and stability improvements on all platforms.
4736 2013-01-18: Version 3.16.6
4738 Made the Isolate parameter mandatory in Locker and Unlocker classes.
4741 Avoid pointer underflow in CopyCharsUnsigned.
4744 Generate shim headers when using system v8.
4745 (Chromium issue 165264)
4747 Fixed arguments materialization for inlined apply().
4750 Sync'ed laziness between BuildFunctionInfo and MakeFunctionInfo.
4751 (Chromium issue 147497)
4753 Added sanity check to CodeFlusher::AddCandidate.
4754 (Chromium issue 169209)
4756 Performance and stability improvements on all platforms.
4759 2013-01-15: Version 3.16.5
4761 Removed deprecated functions from V8's external API.
4763 Prepared API for WebKit use of Latin-1.
4765 Fixed V8 issue 2486.
4767 Fixed Chromium issue 169723.
4769 Performance and stability improvements on all platforms.
4772 2013-01-11: Version 3.16.4
4774 Fixed Chromium issues 168545 and 169209.
4776 Performance and stability improvements on all platforms.
4779 2013-01-09: Version 3.16.3
4781 Improved GC performance when moving parts of a FixedArray (issue 2452).
4783 Enabled readline on d8 while building a shared lib (issue 1781).
4785 Fixed missing exception check in typed array constructor
4786 (Chromium issue 168545).
4788 Check for read-only-ness when preparing for array sort (issue 2419).
4790 Performance and stability improvements on all platforms.
4793 2013-01-04: Version 3.16.2
4795 Added Makefile options to build for the Raspberry Pi (armv7=0,
4798 Performance and stability improvements on all platforms.
4801 2012-12-27: Version 3.16.1
4803 Fixed x64 MathMinMax for negative untagged int32 arguments.
4804 (Chromium issue 164442)
4806 Fixed FloatingPointHelper::CheckSSE2OperandIsInt32.
4809 Performance and stability improvements on all platforms.
4812 2012-12-21: Version 3.16.0
4814 V8_Fatal now prints C++ stack trace in debug mode.
4816 Added HTML-based tick processor.
4818 Continued implementation of Object.observe (V8 issue 2409).
4820 Fixed V8 issues 2243, 2340, 2393, 2399, 2457.
4822 Fixed Chromium issues 125308, 165637, 166379, 166553.
4824 Performance and stability improvements on all platforms.
4827 2012-12-10: Version 3.15.11
4829 Define CAN_USE_VFP2/3_INSTRUCTIONS based on arm_neon and arm_fpu GYP
4832 Performance and stability improvements on all platforms.
4835 2012-12-07: Version 3.15.10
4837 Enabled optimisation of functions inside eval. (issue 2315)
4839 Fixed spec violations in methods of Number.prototype. (issue 2443)
4841 Added GCTracer metrics for a scavenger GC for DOM wrappers.
4843 Performance and stability improvements on all platforms.
4846 2012-12-06: Version 3.15.9
4848 Fixed candidate eviction in code flusher.
4849 (Chromium issue 159140)
4851 Iterate through all arguments for side effects in Math.min/max.
4854 Fixed spec violations related to regexp.lastIndex
4855 (issue 2437, issue 2438)
4857 Performance and stability improvements on all platforms.
4860 2012-12-04: Version 3.15.8
4862 Enforced stack allocation of TryCatch blocks.
4863 (issue 2166,chromium:152389)
4865 Fixed external exceptions in external try-catch handlers.
4868 Activated incremental code flushing by default.
4870 Performance and stability improvements on all platforms.
4873 2012-11-30: Version 3.15.7
4875 Activated code aging by default.
4877 Included more information in --prof log.
4879 Removed eager sweeping for lazy swept spaces. Try to find in
4880 SlowAllocateRaw a bounded number of times a big enough memory slot.
4883 Performance and stability improvements on all platforms.
4886 2012-11-26: Version 3.15.6
4888 Ensure double arrays are filled with holes when extended from
4889 variations of empty arrays. (Chromium issue 162085)
4891 Performance and stability improvements on all platforms.
4894 2012-11-23: Version 3.15.5
4896 Fixed JSON.stringify for objects with interceptor handlers.
4897 (Chromium issue 161028)
4899 Fixed corner case in x64 compare stubs. (issue 2416)
4901 Performance and stability improvements on all platforms.
4904 2012-11-16: Version 3.15.4
4906 Fixed Array.prototype.join evaluation order. (issue 2263)
4908 Perform CPU sampling by CPU sampling thread only iff processing thread
4909 is not running. (issue 2364)
4911 When using an Object as a set in Object.getOwnPropertyNames, null out
4912 the proto. (issue 2410)
4914 Disabled EXTRA_CHECKS in Release build.
4916 Heap explorer: Show representation of strings.
4918 Removed 'type' and 'arguments' properties from Error object.
4921 Added atomics implementation for ThreadSanitizer v2.
4922 (Chromium issue 128314)
4924 Fixed LiveEdit crashes when object/array literal is added. (issue 2368)
4926 Performance and stability improvements on all platforms.
4929 2012-11-13: Version 3.15.3
4931 Changed sample shell to send non-JS output (e.g. errors) to stderr
4934 Correctly check for stack overflow even when interrupt is pending.
4937 Collect stack trace on stack overflow. (issue 2394)
4939 Performance and stability improvements on all platforms.
4942 2012-11-12: Version 3.15.2
4944 Function::GetScriptOrigin supplies sourceURL when script name is
4945 not available. (Chromium issue 159413)
4947 Made formatting error message side-effect-free. (issue 2398)
4949 Fixed length check in JSON.stringify. (Chromium issue 160010)
4951 ES6: Added support for Set and Map clear method (issue 2400)
4953 Fixed slack tracking when instance prototype changes.
4954 (Chromium issue 157019)
4956 Fixed disabling of code flusher while marking. (Chromium issue 159140)
4958 Added a test case for object grouping in a scavenger GC (issue 2077)
4960 Support shared library build of Android for v8.
4961 (Chromium issue 158821)
4963 ES6: Added support for size to Set and Map (issue 2395)
4965 Performance and stability improvements on all platforms.
4968 2012-11-06: Version 3.15.1
4970 Put incremental code flushing behind a flag. (Chromium issue 159140)
4972 Performance and stability improvements on all platforms.
4975 2012-10-31: Version 3.15.0
4977 Loosened aligned code target requirement on ARM (issue 2380)
4979 Fixed JSON.parse to treat leading zeros correctly.
4980 (Chromium issue 158185)
4982 Performance and stability improvements on all platforms.
4985 2012-10-22: Version 3.14.5
4987 Killed off the SCons based build.
4989 Added a faster API for creating v8::Integer objects.
4991 Speeded up function deoptimization by avoiding quadratic pass over
4992 optimized function list. (Chromium issue 155270)
4994 Always invoke the default Array.sort functions from builtin functions.
4997 Reverted recent CPU profiler changes because they broke --prof.
5000 Switched code flushing to use different JSFunction field.
5003 Performance and stability improvements on all platforms.
5006 2012-10-15: Version 3.14.4
5008 Allow evals for debugger even if they are prohibited in the debugee
5009 context. (Chromium issue 154733)
5011 Enabled --verify-heap in release mode (issue 2120)
5013 Performance and stability improvements on all platforms.
5016 2012-10-11: Version 3.14.3
5018 Use native context to retrieve ErrorMessageForCodeGenerationFromStrings
5019 (Chromium issue 155076).
5021 Bumped variable limit further to 2^17 (Chromium issue 151625).
5023 Performance and stability improvements on all platforms.
5026 2012-10-10: Version 3.14.2
5028 ARM: allowed VFP3 instructions when hardfloat is enabled.
5029 (Chromium issue 152506)
5031 Fixed instance_descriptors() and PushStackTraceAndDie regressions.
5032 (Chromium issue 151749)
5034 Made GDBJIT interface compile again. (issue 1804)
5036 Fixed Accessors::FunctionGetPrototype's proto chain traversal.
5037 (Chromium issue 143967)
5039 Made sure that names of temporaries do not clash with real variables.
5042 Rejected local module declarations. (Chromium issue 150628)
5044 Rejected uses of lexical for-loop variable on the RHS. (issue 2322)
5046 Fixed slot recording of code target patches.
5047 (Chromium issue 152615,chromium:144230)
5049 Changed the Android makefile to use GCC 4.6 instead of GCC 4.4.3.
5051 Performance and stability improvements on all platforms.
5054 2012-10-01: Version 3.14.1
5056 Don't set -m32 flag when compiling with Android ARM compiler.
5057 (Chromium issue 143889)
5059 Restore the descriptor array before returning allocation failure.
5060 (Chromium issue 151750)
5062 Lowered kMaxVirtualRegisters (v8 issue 2139, Chromium issues 123822 and
5065 Pull more recent gyp in 'make dependencies'.
5067 Made sure that the generic KeyedStoreIC changes length and element_kind
5068 atomically (issue 2346).
5070 Bumped number of allowed variables per scope to 65535, to address GWT.
5071 (Chromium issue 151625)
5073 Support sourceURL for dynamically inserted scripts (issue 2342).
5075 Performance and stability improvements on all platforms.
5078 2012-09-20: Version 3.14.0
5080 Fixed missing slot recording during clearing of CallICs.
5081 (Chromium issue 144230)
5083 Fixed LBoundsCheck on x64 to handle (stack slot + constant) correctly.
5084 (Chromium issue 150729)
5086 Fixed minus zero test. (Issue 2133)
5088 Fixed setting array length to zero for slow elements.
5089 (Chromium issue 146910)
5091 Fixed lost arguments dropping in HLeaveInlined.
5092 (Chromium issue 150545)
5094 Fixed casting error for receiver of interceptors.
5095 (Chromium issue 149912)
5097 Throw a more descriptive exception when blocking 'eval' via CSP.
5098 (Chromium issue 140191)
5100 Fixed debugger's eval when close to stack overflow. (issue 2318)
5102 Added checks to live edit. (issue 2297)
5104 Switched on code compaction on incremental GCs.
5106 Fixed caching of optimized code for OSR. (issue 2326)
5108 Not mask exception thrown by toString in String::UtfValue etc.
5111 Fixed API check for length of external arrays. (Chromium issue 148896)
5113 Ensure correct enumeration indices in the dict (Chromium issue 148376)
5115 Correctly initialize regexp global cache. (Chromium issue 148378)
5117 Fixed arguments object materialization during deopt. (issue 2261)
5119 Introduced new API to expose external string resource regardless of
5122 Fixed CHECK failure in LCodeGen::DoWrapReceiver when
5123 --deopt-every-n-times flag is present
5124 (Chromium issue 148389)
5126 Fixed edge case of extension with NULL as source string.
5127 (Chromium issue 144649)
5129 Fixed array index dehoisting. (Chromium issue 141395)
5131 Performance and stability improvements on all platforms.
5134 2012-09-11: Version 3.13.7
5136 Enable/disable LiveEdit using the (C++) debug API.
5138 Performance and stability improvements on all platforms.
5141 2012-09-06: Version 3.13.6
5143 Added validity checking to API functions and calls.
5145 Disabled accessor inlining (Chromium issue 134609).
5147 Fixed bug in Math.min/max in optimized code (Chromium issue 145961).
5149 Directly use %ObjectKeys in json stringify (Chromium issue 2312).
5151 Fixed VS2005 build (issue 2313).
5153 Activated fixed ES5 readonly semantics by default.
5155 Added hardfp flag to the Makefile.
5157 Performance and stability improvements on all platforms.
5160 2012-08-29: Version 3.13.5
5162 Release stack trace data after firing Error.stack accessor.
5165 Added a new API V8::SetJitCodeEventHandler to push code name and
5166 location to users such as profilers.
5168 Allocate block-scoped global bindings to global context.
5170 Performance and stability improvements on all platforms.
5173 2012-08-28: Version 3.13.4
5175 Print reason for disabling optimization. Kill --trace-bailout flag.
5177 Provided option to disable full DEBUG build on Android.
5179 Introduced global contexts to represent lexical global scope(s).
5181 Fixed rounding in Uint8ClampedArray setter. (issue 2294)
5183 Performance and stability improvements on all platforms.
5186 2012-08-21: Version 3.13.3
5188 Performance and stability improvements on all platforms.
5191 2012-08-20: Version 3.13.2
5193 Performance and stability improvements on all platforms.
5196 2012-08-16: Version 3.13.1
5198 Performance and stability improvements on all platforms.
5201 2012-08-10: Version 3.13.0
5203 Added histograms for total allocated/live heap size, as well as
5204 allocated size and percentage of total for map and cell space.
5206 Fixed parseInt's octal parsing behavior (ECMA-262 Annex E 15.1.2.2).
5209 Added checks for interceptors to negative lookup code in Crankshaft.
5210 (Chromium issue 140473)
5212 Made incremental marking clear ICs and type feedback cells.
5214 Performance and stability improvements on all platforms.
5217 2012-08-01: Version 3.12.19
5219 Performance and stability improvements on all platforms.
5222 2012-07-30: Version 3.12.18
5224 Forced using bit-pattern for signed zero double. (issue 2239)
5226 Made sure double to int conversion is correct. (issue 2260)
5228 Performance and stability improvements on all platforms.
5231 2012-07-27: Version 3.12.17
5233 Always set the callee's context when calling a function from optimized
5235 (Chromium issue 138887)
5237 Fixed building with GCC 3.x
5240 Improved API calls that return empty handles.
5243 Performance and stability improvements on all platforms.
5246 2012-07-25: Version 3.12.16
5248 Performance and stability improvements on all platforms.
5251 2012-07-24: Version 3.12.15
5253 Added PRESERVE_ASCII_NULL option to String::WriteAscii.
5256 Added dependency to HLoadKeyed* instructions to prevent invalid
5257 hoisting. (Chromium issue 137768)
5259 Enabled building d8 for Android on Mac.
5261 Interpret negative hexadecimal literals as NaN.
5264 Expose counters in javascript when using --track-gc-object-stats.
5266 Enabled building and testing V8 on Android IA.
5268 Added --trace-parse flag to parser.
5270 Performance and stability improvements on all platforms.
5273 2012-07-18: Version 3.12.14
5275 Deactivated optimization of packed arrays.
5276 (Chromium issue 137768)
5278 Fixed broken accessor transition.
5279 (Chromium issue 137689)
5281 Performance and stability improvements on all platforms.
5284 2012-07-17: Version 3.12.13
5286 Fixed missing tagging of stack value in finally block.
5287 (Chromium issue 137496)
5289 Added more support for heap analysis.
5291 Performance and stability improvements on all platforms.
5294 2012-07-16: Version 3.12.12
5296 Added an option to the tickprocessor to specify the directory for lib
5299 Fixed ICs for slow objects with native accessor (Chromium issue 137002).
5301 Fixed transcendental cache on ARM in optimized code (issue 2234).
5303 New heap inspection tools: counters for object sizes and counts,
5304 histograms for external fragmentation.
5306 Incorporated constness into inferred interfaces (in preparation for
5307 handling imports) (issue 1569).
5309 Performance and stability improvements on all platforms.
5312 2012-07-12: Version 3.12.11
5314 Renamed "mips" arch to "mipsel" in the GYP build.
5316 Fixed computation of call targets on prototypes in Crankshaft.
5317 (Chromium issue 125148)
5319 Removed use of __lookupGetter__ when generating stack trace.
5322 Turned on ES 5.2 globals semantics by default.
5323 (issue 1991, Chromium issue 80591)
5325 Synced preparser and parser wrt syntax error in switch..case.
5328 Fixed reporting of octal literals in strict mode when preparsing.
5331 Fixed inline constructors for Harmony Proxy prototypes.
5334 Performance and stability improvements on all platforms.
5337 2012-07-10: Version 3.12.10
5339 Re-enabled and fixed issue with array bounds check elimination
5340 (Chromium issue 132114).
5342 Fixed Debug::Break crash. (Chromium issue 131642)
5344 Added optimizing compiler support for JavaScript getters.
5346 Performance and stability improvements on all platforms.
5349 2012-07-06: Version 3.12.9
5351 Correctly advance the scanner when scanning unicode regexp flag.
5352 (Chromium issue 136084)
5354 Fixed unhandlified code calling Harmony Proxy traps.
5357 Performance and stability improvements on all platforms.
5360 2012-07-05: Version 3.12.8
5362 Implemented TypedArray.set and ArrayBuffer.slice in d8.
5364 Performance and stability improvements on all platforms.
5367 2012-07-03: Version 3.12.7
5369 Fixed lazy compilation for strict eval scopes.
5370 (Chromium issue 135066)
5372 Made MACOSX_DEPLOYMENT_TARGET configurable in GYP.
5375 Report "hidden properties" in heap profiler for properties case.
5378 Activated optimization of packed arrays by default.
5380 Performance and stability improvements on all platforms.
5383 2012-06-29: Version 3.12.6
5385 Cleaned up hardfp ABI detection for ARM (V8 issue 2140).
5387 Extended TypedArray support in d8.
5390 2012-06-28: Version 3.12.5
5392 Fixed lazy parsing heuristics to respect outer scope.
5393 (Chromium issue 135008)
5395 Allow using test-wrapper-gypbuild.py on Windows when no python
5396 interpreter is registered.
5398 Performance and stability improvements on all platforms.
5401 2012-06-27: Version 3.12.4
5403 Removed -fomit-frame-pointer flag from Release builds to make
5404 the stack walkable by TCMalloc (Chromium issue 133723).
5406 Ported r7868 (constant masking) to x64 (issue 1374).
5408 Expose more detailed memory statistics (issue 2201).
5410 Fixed Harmony Maps and WeakMaps for undefined values
5411 (Chromium issue 132744).
5413 Correctly throw reference error in strict mode with ICs disabled
5416 Performance and stability improvements on all platforms.
5419 2012-06-25: Version 3.12.3
5421 Reverted r11835 'Unify promotion and allocation limit computation' due
5422 to V8 Splay performance regression on Mac. (Chromium issue 134183)
5424 Fixed sharing of literal boilerplates for optimized code. (issue 2193)
5426 Performance and stability improvements on all platforms.
5429 2012-06-22: Version 3.12.2
5431 Made near-jump check more strict in LoadNamedFieldPolymorphic on
5432 ia32/x64. (Chromium issue 134055)
5434 Fixed lazy sweeping heuristics to prevent old-space expansion.
5437 Performance and stability improvements on all platforms.
5440 2012-06-21: Version 3.12.1
5442 Performance and stability improvements on all platforms.
5445 2012-06-20: Version 3.12.0
5447 Fixed Chromium issues:
5448 115100, 129628, 131994, 132727, 132741, 132742, 133211
5451 915, 1914, 2034, 2087, 2094, 2134, 2156, 2166, 2172, 2177, 2179, 2185
5453 Added --extra-code flag to mksnapshot to load JS code into the VM
5454 before creating the snapshot.
5456 Support 'restart call frame' command in the debugger.
5458 Performance and stability improvements on all platforms.
5461 2012-06-13: Version 3.11.10
5463 Implemented heap profiler memory usage reporting.
5465 Preserved error message during finally block in try..finally.
5466 (Chromium issue 129171)
5468 Fixed EnsureCanContainElements to properly handle double values.
5471 Improved heuristics to keep objects in fast mode with inherited
5474 Performance and stability improvements on all platforms.
5477 2012-06-06: Version 3.11.9
5479 Implemented ES5-conformant semantics for inherited setters and read-only
5480 properties. Currently behind --es5_readonly flag, because it breaks
5483 Exposed last seen heap object id via v8 public api.
5485 Performance and stability improvements on all platforms.
5488 2012-05-31: Version 3.11.8
5490 Avoid overdeep recursion in regexp where a guarded expression with a
5491 minimum repetition count is inside another quantifier.
5492 (Chromium issue 129926)
5494 Fixed missing write barrier in store field stub.
5495 (issues 2143, 1465, Chromium issue 129355)
5497 Proxies: Fixed receiver for setters inherited from proxies.
5498 Proxies: Fixed ToStringArray function so that it does not reject some
5502 Performance and stability improvements on all platforms.
5505 2012-05-29: Version 3.11.7
5507 Get better function names in stack traces.
5509 Performance and stability improvements on all platforms.
5512 2012-05-24: Version 3.11.6
5514 Fixed RegExp.prototype.toString for incompatible receivers
5517 Performance and stability improvements on all platforms.
5520 2012-05-23: Version 3.11.5
5522 Performance and stability improvements on all platforms.
5525 2012-05-22: Version 3.11.4
5527 Some cleanup to common.gypi. This fixes some host/target combinations
5528 that weren't working in the Make build on Mac.
5530 Handle EINTR in socket functions and continue incomplete sends.
5533 Fixed python deprecations. (issue 1391)
5535 Made socket send and receive more robust and return 0 on failure.
5536 (Chromium issue 15719)
5538 Fixed GCC 4.7 (C++11) compilation. (issue 2136)
5540 Set '-m32' option for host and target platforms
5542 Performance and stability improvements on all platforms.
5545 2012-05-18: Version 3.11.3
5547 Disable optimization for functions that have scopes that cannot be
5548 reconstructed from the context chain. (issue 2071)
5550 Define V8_EXPORT to nothing for clients of v8. (Chromium issue 90078)
5552 Correctly check for native error objects. (Chromium issue 2138)
5554 Performance and stability improvements on all platforms.
5557 2012-05-16: Version 3.11.2
5559 Revert r11496. (Chromium issue 128146)
5561 Implement map collection for incremental marking. (issue 1465)
5563 Add toString method to CallSite (which describes a frame of the
5567 2012-05-15: Version 3.11.1
5569 Added a readbuffer function to d8 that reads a file into an ArrayBuffer.
5571 Fix freebsd build. (V8 issue 2126)
5573 Performance and stability improvements on all platforms.
5576 2012-05-11: Version 3.11.0
5578 Fixed compose-discard crasher from r11524 (issue 2123).
5580 Activated new global semantics by default. Global variables can
5581 now shadow properties of the global object (ES5.1 erratum).
5583 Properly set ElementsKind of empty FAST_DOUBLE_ELEMENTS arrays when
5584 transitioning (Chromium issue 117409).
5586 Made Error.prototype.name writable again, as required by the spec and
5587 the web (Chromium issue 69187).
5589 Implemented map collection with incremental marking (issue 1465).
5591 Regexp: Fixed overflow in min-match-length calculation
5592 (Chromium issue 126412).
5594 MIPS: Fixed illegal instruction use on Loongson in code for
5595 Math.random() (issue 2115).
5597 Fixed crash bug in VisitChoice (Chromium issue 126272).
5599 Fixed unsigned-Smi check in MappedArgumentsLookup
5600 (Chromium issue 126414).
5602 Fixed LiveEdit for function with no locals (issue 825).
5604 Fixed register clobbering in LoadIC for interceptors
5605 (Chromium issue 125988).
5607 Implemented clearing of CompareICs (issue 2102).
5609 Performance and stability improvements on all platforms.
5612 2012-05-03: Version 3.10.8
5614 Enabled MIPS cross-compilation.
5616 Ensured reload of elements pointer in StoreFastDoubleElement stub.
5617 (Chromium issue 125515)
5619 Fixed corner cases in truncation behavior when storing to
5620 TypedArrays. (issue 2110)
5622 Fixed failure to properly recognize and report out-of-memory
5623 conditions when allocating code space pages. (Chromium issue
5626 Fixed idle notifications to perform a round of incremental GCs
5627 after context disposal. (issue 2107)
5629 Fixed preparser for try statement. (issue 2109)
5631 Performance and stability improvements on all platforms.
5634 2012-04-30: Version 3.10.7
5636 Performance and stability improvements on all platforms.
5639 2012-04-26: Version 3.10.6
5641 Fixed some bugs in accessing details of the last regexp match.
5643 Fixed source property of empty RegExp objects. (issue 1982)
5645 Enabled inlining some V8 API functions.
5647 Performance and stability improvements on all platforms.
5650 2012-04-23: Version 3.10.5
5652 Put new global var semantics behind a flag until WebKit tests are
5655 Enabled stepping into callback passed to builtins.
5656 (Chromium issue 109564)
5658 Performance and stability improvements on all platforms.
5661 2012-04-19: Version 3.10.4
5663 Fixed issues when stressing compaction with WeakMaps.
5665 Fixed missing GVN flag for new-space promotion. (Chromium issue 123919)
5667 Simplify invocation sequence at monomorphic function invocation sites.
5670 Performance and stability improvements on all platforms.
5673 2012-04-17: Version 3.10.3
5675 Fixed several bugs in heap profiles (including issue 2078).
5677 Throw syntax errors on illegal escape sequences.
5679 Implemented rudimentary module linking (behind --harmony flag)
5681 Implemented ES5 erratum: Global declarations should shadow
5682 inherited properties.
5684 Made handling of const more consistent when combined with 'eval'
5687 Fixed V8 on MinGW-x64 (issue 2026).
5689 Performance and stability improvements on all platforms.
5692 2012-04-13: Version 3.10.2
5694 Fixed native ARM build (issues 1744, 539)
5696 Return LOOKUP variable instead of CONTEXT for non-context allocated
5697 outer scope parameters (Chromium issue 119609).
5699 Fixed regular and ElementsKind transitions interfering with each other
5700 (Chromium issue 122271).
5702 Improved performance of keyed loads/stores which have a HeapNumber
5703 index (issues 1388, 1295).
5705 Fixed WeakMap processing for evacuation candidates (issue 2060).
5707 Bailout on possible direct eval calls (Chromium issue 122681).
5709 Do not assume that names of function expressions are context-allocated
5712 Performance and stability improvements on all platforms.
5715 2012-04-10: Version 3.10.1
5717 Fixed bug with arguments object in inlined functions (issue 2045).
5719 Fixed performance bug with lazy initialization (Chromium issue
5722 Added suppport for Mac OS X 64bit builds with GYP.
5723 (Patch contributed by Filipe David Manana <fdmanana@gmail.com>)
5725 Fixed bug with hidden properties (issue 2034).
5727 Fixed a performance bug when reloading pages (Chromium issue 117767,
5730 Fixed bug when optimizing throw in top-level code (issue 2054).
5732 Fixed two bugs with array literals (issue 2055, Chromium issue 121407).
5734 Fixed bug with Math.min/Math.max with NaN inputs (issue 2056).
5736 Fixed a bug with the new runtime profiler (Chromium issue 121147).
5738 Fixed compilation of V8 using uClibc.
5740 Optimized boot-up memory use.
5742 Optimized regular expressions.
5745 2012-03-30: Version 3.10.0
5747 Fixed store IC writability check in strict mode
5748 (Chromium issue 120099).
5750 Resynchronize timers if the Windows system time was changed.
5751 (Chromium issue 119815)
5753 Removed "-mfloat-abi=hard" from host compiler cflags when building for
5755 (https://code.google.com/p/chrome-os-partner/issues/detail?id=8539)
5757 Fixed edge case for case independent regexp character classes
5760 Reset function info counters after context disposal.
5761 (Chromium issue 117767, V8 issue 1902)
5763 Fixed missing write barrier in CopyObjectToObjectElements.
5764 (Chromium issue 119926)
5766 Fixed missing bounds check in HasElementImpl.
5767 (Chromium issue 119925)
5769 Performance and stability improvements on all platforms.
5772 2012-03-23: Version 3.9.24
5774 Activated count-based profiler for ARM.
5776 Fixed use of proxies as f.prototype properties. (issue 2021)
5778 Enabled snapshots on MIPS.
5780 Performance and stability improvements on all platforms.
5783 2012-03-21: Version 3.9.23
5785 Use correct arguments adaptation environment when inlining function
5786 containing arguments. (Issue 2014)
5788 Performance and stability improvements on all platforms.
5791 2012-03-20: Version 3.9.22
5793 Enabled count-based profiler by default.
5795 Implemented a hash based look-up to speed up address checks
5796 in large object space (issue 853).
5798 Performance and stability improvements on all platforms.
5801 2012-03-19: Version 3.9.21
5803 Fixed push-to-trunk script (and re-push).
5805 Added API call that identifies strings that are guaranteed only to
5806 contain ASCII characters.
5809 2012-03-19: Version 3.9.20
5811 Fixed declarations escaping global strict eval. (Issue 1624)
5813 Fixed wrapping of receiver for non-strict callbacks. (Issue 1973)
5815 Fixed function declarations overwriting read-only global properties.
5816 (Chromium issue 115452)
5818 Fixed --use-strict flag in combination with --harmony[-scoping].
5820 Debugger: naive implementation of "step into Function.prototype.bind".
5822 Debugger: added ability to set script source from within OnBeforeCompile
5824 Added flag to always call DebugBreak on abort.
5826 Re-enabled constructor inlining and inline === comparison with boolean
5827 constants. (Issue 2009)
5829 Don't use an explicit s0 in ClampDoubleToUint8. (Issue 2004)
5831 Performance and stability improvements on all platforms.
5834 2012-03-14: Version 3.9.19
5836 Ensure there is a smi check of the receiver for global load and call
5837 ICs (Chromium issue 117794).
5839 Performance and stability improvements on all platforms.
5842 2012-03-13: Version 3.9.18
5844 Ensure consistency of Math.sqrt on Intel platforms.
5846 Remove static initializers in v8. (issue 1859)
5848 Add explicit dependency on v8_base in the GYP-based build.
5850 Performance and stability improvements on all platforms.
5853 2012-03-12: Version 3.9.17
5855 Fixed VFP detection through compiler defines. (issue 1996)
5857 Add Code-related fields to postmortem metadata.
5859 Performance and stability improvements on all platforms.
5862 2012-03-09: Version 3.9.16
5864 Added basic interface inference for modules (behind the --harmony flag).
5866 Added Object.is, Number.isFinite, Number.isNaN.
5868 Updated the Unicode tables to Unicode version 6.1.0.
5870 Performance and stability improvements on all platforms.
5873 2012-03-06: Version 3.9.15
5875 Fix the heap profiler crash caused by memory layout changes between
5878 Fix Error.prototype.toString to throw TypeError. (issue 1980)
5880 Fix double-rounding in strtod for MinGW. (issue 1062)
5882 Fix corrupted snapshot serializaton on ia32. (Chromium issue v8/1985)
5884 Performance and stability improvements on all platforms.
5887 2012-03-01: Version 3.9.14
5889 Performance and stability improvements on all platforms.
5892 2012-02-29: Version 3.9.13
5894 Added code kind check before preparing for OSR. (issue 1900, 115073)
5896 Fixed issue 1802: Pass zone explicitly to zone-allocation on x64 and
5899 Ported string construct stub to x64. (issue 849)
5901 Performance and stability improvements on all platforms.
5904 2012-02-28: Version 3.9.12
5906 Fixed the negative lookup stub to handle deleted entries in a
5907 dictionary. (issue 1964)
5909 Added a new API where the host can supply a callback function. The
5910 callback function can resolve the location of a return address on stack
5911 to the location where a return-address rewriting profiler stashed the
5912 original return address.
5914 Fixed Chromium issue http://crbug.com/115646: When compiling for-in
5915 pass correct context value to the increment instruction.
5917 Fixed issue 1853: Update breakpoints set with partial file name after
5921 2012-02-27: Version 3.9.11
5923 Made 'module' a context-sensitive keyword (V8 issue 1957).
5926 2012-02-24: Version 3.9.10
5928 Fixed V8 issues 1322, 1772 and 1969.
5930 Conformance improvements.
5932 Performance and stability improvements on all platforms.
5935 2012-02-23: Version 3.9.9
5937 Supported fast case for-in in Crankshaft.
5939 Sped up heap snapshot serialization and dominators construction.
5941 Randomized allocation addresses on windows. (Chromium issue 115151)
5943 Fixed compilation with MinGW-w64. (issue 1943)
5945 Fixed incorrect value of assignments to non-extensible properties.
5947 Fixed a crash bug in generated code on ia32.
5949 Performance and stability improvements on all platforms.
5952 2012-02-21: Version 3.9.8
5954 Fixed memory leak and missing #include in StartupDataDecompressor
5957 Renamed static methods to avoid shadowing virtual methods and fix Clang
5958 C++11 compile error.
5960 Fixed sequence of element access in array builtins (issue 1790).
5962 Performance and stability improvements on all platforms.
5965 2012-02-16: Version 3.9.7
5967 Fixed V8 issues 1322, 1878, 1942, 1945 and Chromium issue 113924.
5969 Fixed GCC-4.7 warnings.
5971 Added Navier-Stokes benchmark.
5973 Performance and stability improvements on all platforms.
5976 2012-02-14: Version 3.9.6
5978 Fixed template-related linker error. (issue 1936)
5980 Allowed inlining of functions containing object literals. (issue 1322)
5982 Added --call-graph-size option to tickprocessor. (issue 1937)
5984 Heap Snapshot maximum size limit is too low for really big apps. At the
5985 moment the limit is 256MB. (Chromium issue 113015)
5987 Performance and stability improvements on all platforms.
5990 2012-02-09: Version 3.9.5
5992 Removed unused command line flags.
5994 Performance and stability improvements on all platforms.
5997 2012-02-08: Version 3.9.4
5999 Properly initialize element-transitioning array literals on ARM.
6002 Bug fixes on all platforms.
6005 2012-02-07: Version 3.9.3
6007 When rethrowing an exception, print the stack trace of its original
6008 site instead of rethrow site (Chromium issue 60240).
6010 Increased size of small stacks from 32k to 64k to avoid hitting limits
6011 in Chromium (Chromium issue 112843).
6014 2012-02-06: Version 3.9.2
6016 Added timestamp to --trace-gc output. (issue 1932)
6018 Heap profiler reports implicit references.
6020 Optionally export metadata with libv8 to enable debuggers to inspect V8
6024 2012-02-02: Version 3.9.1
6026 Fixed memory leak in NativeObjectsExplorer::FindOrAddGroupInfo
6027 (Chromium issue 112315).
6029 Fixed a crash in dev tools (Chromium issue 107996).
6031 Added 'dependencies_traverse': 1 to v8 GYP target.
6033 Performance and stability improvements on all platforms.
6036 2012-02-01: Version 3.9.0
6038 Reduced memory use immediately after starting V8.
6040 Stability fixes and performance improvements on all platforms.
6043 2012-01-26: Version 3.8.9
6045 Flush number string cache on GC (issue 1605).
6047 Provide access to function inferred name with
6048 v8::Function::GetInferredName in V8 public API.
6050 Fix building with Clang (issue 1912).
6052 Reduce the space used by the stack for the profiling thread.
6054 Fix misleading documentation of v8::Locker (issue 542).
6056 Introduce readbinary function in d8 to read binary files.
6058 Performance and stability improvements on all platforms.
6061 2012-01-23: Version 3.8.8
6063 Limited number of loop iterations in Heap::ReserveSpace
6064 (Chromium issue 99027).
6066 Fixed solaris build (VirtualMemory) (issue 1761).
6068 Fixed strict vs. non-strict handling of function proxies in
6069 higher-order array and string methods.
6071 Enabled asynchronous remote debugging with d8 (issue 1691).
6073 Stability and performance improvements on all platforms.
6076 2012-01-19: Version 3.8.7
6078 Ensure that LRandom restores rsi after call to the C function on x64.
6079 (Chromium issue http://crbug.com/110509)
6081 Fixing include issues on *bsd when building with scons.
6084 Provide a switch to specify -fno-strict-aliasing
6087 Move WIN32 define from standalone.gypi to common.gypi
6090 Fix corner-case in heap size estimation.
6093 Fix and enable NEW_NON_STRICT_FAST ArgumentsAccess stub on x64.
6096 Performance improvements and bug fixes.
6099 2012-01-16: Version 3.8.6
6101 Add primitive WebGL array support to d8.
6103 Improve heap size estimation (issue 1893).
6105 Hash collision DOS workaround extended from string keys
6108 Provide an API for iterating through all external strings referenced
6111 Adjust position recorded for call expressions. http://crbug.com/109195
6113 Fix GC crash related to instanceof. http://crbug.com/109448
6115 Performance improvements and bug fixes.
6118 2012-01-05: Version 3.8.5
6120 Fix broken test that assumes that no GC can clear the regexp cache (GC
6121 can happen at any time due to Crankshaft).
6123 Fix handling of bogus receivers for Harmony collections. (issue 1884)
6125 Add netbsd support to gyp build.
6127 Determine page size at runtime on posix platforms.
6129 Ensure that store buffer filtering hash sets are cleared after
6130 StoreBuffer::Filter.
6132 Randomize the seed used for string hashing. This helps guard against
6133 CPU-eating DOS attacks against node.js servers. Based on code from
6134 Bert Belder. This version only solves the issue for those that compile
6135 V8 themselves or those that do not use snapshots. A snapshot-based
6136 precompiled V8 will still have predictable string hash codes.
6138 Implement callback when script finishes running in V8 API.
6140 Improve performance of Math.min and Math.max for the case of two
6141 arguments. (issue 1325)
6144 2012-01-02: Version 3.8.4
6146 Performance improvements for large Smi-only arrays.
6148 Fixed InternalArrays construction. (issue 1878)
6151 2011-12-27: Version 3.8.3
6153 Avoid embedding new space objects into code objects in the lithium gap
6154 resolver. (chromium:108296)
6156 Bug fixes and performance optimizations on all platforms.
6159 2011-12-21: Version 3.8.2
6161 Add max optimization flag to v8 gyp build to ensure V8 is always built
6162 fully optimized in Chrome.
6164 MIPS: Bring MIPS to parity with other platforms.
6166 Optimizations and stability improvements on all platforms.
6169 2011-12-19: Version 3.8.1
6171 Fixed GCC 4.7 warnings. Patch from Tobias Burnus.
6173 Stability improvements on all platforms.
6176 2011-12-13: Version 3.8.0
6178 Fixed handling of arrays in DefineOwnProperty. (issue 1756)
6180 Sync parser and preparser on do-while and return statements.
6183 Fixed another corner case for DefineOwnProperty on arrays (issue 1756).
6185 Stability and performance improvements on all platforms.
6188 2011-12-01: Version 3.7.12
6190 Increase tick interval for the android platform.
6192 Fix a bug in the register allocator. (chromium:105112)
6194 Fix handling of recompiling code. (chromium:105375, v8:1782)
6196 Start incremental marking on idle notification. (v8:1458)
6198 Build fixes for various platforms.
6200 Various performance improvements.
6203 2011-11-29: Version 3.7.11
6205 Fixed bug when generating padding to ensure space for lazy
6209 Further reduced pause times due to GC.
6211 Stability and performance improvements on all platforms.
6214 2011-11-23: Version 3.7.10
6216 Set maximum length of FixedArray in terms of elements instead an
6217 absolute number of bytes.
6218 (Chromium issue 103103)
6220 Stability and performance improvements on all platforms.
6223 2011-11-21: Version 3.7.9
6225 Removed exit-time destructors.
6227 Stability and performance improvements on all platforms.
6230 2011-11-17: Version 3.7.8
6232 Removed hidden prototype from builtins, i.e., deleting an overridden
6233 function on builtins will not make the original function reappear.
6235 Added NetBSD support for scons build.
6237 Performance improvements on all platforms.
6240 2011-11-14: Version 3.7.7
6242 Fix missing fast property accessors in heap snapshots.
6246 2011-11-11: Version 3.7.6
6248 Fixed filtering of store buffer for large object pages.
6251 Fixed generated hash function on all platforms.
6254 Fixed Heap::Shrink to ensure that it does not free pages that are
6256 (Chromium issue 100414)
6258 Stability and performance improvements on all platforms.
6261 2011-11-10: Version 3.7.5
6263 Added initial gyp infrastructure for MIPS.
6265 Implemented performance improvements to the incremental garbage
6268 Added optimizations and stability improvements on all platforms.
6271 2011-11-07: Version 3.7.4
6273 Proper "libv8.so.3.7.4" SONAME for Linux shared library (issue 1786).
6275 Fix Harmony sets and maps to allow null and undefined as keys
6276 (still hidden behind --harmony flag) (issue 1622).
6278 Implement VirtualMemory on FreeBSD to fix build (issue 1807).
6280 Enable VFP instructions for Android.
6282 Fix error handling in Date.prototype.toISOString (issue 1792).
6284 Bug fixes and performance improvements for all platforms.
6286 Not officially supported but noteworthy: Crankshaft for MIPS :-)
6289 2011-10-28: Version 3.7.3
6291 Slight deoptimization as a workaround for issue with jslint: Issue
6295 2011-10-27: Version 3.7.2
6297 Fix bug in deoptimization. Known issue with jslint: Issue 1789.
6300 2011-10-26: Version 3.7.1
6302 Achieved 33% speedup in debug-mode tests.
6304 Removed special casing of calls to RegExp test and exec methods with no
6305 argument. Now matches new JSC behaviour. crbug.com/75740.
6307 Return the empty string on cyclic references in toString (ES5
6310 Fixed bug triggered by JSBeautifier. crbug.com/100409.
6312 Made Math.random state per-context instead of per-process (issue 864).
6314 Fixed stack traces to skip native functions.
6316 Make snapshots (new contexts) smaller and faster.
6318 Fixed handling of Function.apply for non-array arguments.
6320 Fixed evaluation order in defineProperties to match FireFox.
6322 Fixed handling of non-object receivers for array builtins,
6325 Multiple fixes to improve compliance with test262.
6327 Fixed compatibility with older Android releases.
6329 Fixed compilation with gcc-4.5.3.
6331 Improved performance of WriteUtf8, issue 1665.
6333 Made native syntax an early error in the preparser.
6335 Fixed issues 793 and 893 relating to Function.prototype.bind.
6337 Improved let, const, Set and Map support and other Harmony features
6338 (behind the --harmony flag).
6340 Changed evaluation order for > and <= to match ES5 instead of ES3.
6342 Bug fixes and performance improvements on all platforms.
6345 2011-10-13: Version 3.7.0
6347 Fixed array handling for Object.defineOwnProperty (ES5 conformance).
6349 Fixed issue 1757 (string slices of external strings).
6351 Fixed issue 1759 (ARM).
6353 Added flag --noclever-optimizations to disable some things that
6354 caused trouble in the past.
6356 Added flag --stress-compaction for testing.
6358 Added flag --harmony to activate all experimental Harmony features.
6361 2011-10-10: Version 3.6.6
6363 Added a GC pause visualization tool.
6365 Added presubmit=no and werror=no flags to Makefile.
6367 ES5/Test262 conformance improvements.
6369 Fixed compilation issues with GCC 4.5.x (issue 1743).
6371 Bug fixes and performance improvements on all platforms.
6374 2011-10-05: Version 3.6.5
6376 New incremental garbage collector.
6378 Removed the hard heap size limit (soft heap size limit is still
6379 700/1400Mbytes by default).
6381 Implemented ES5 generic Array.prototype.toString (Issue 1361).
6383 V8 now allows surrogate pair codes in decodeURIComponent (Issue 1415).
6385 Fixed x64 RegExp start-of-string bug (Issues 1746, 1748).
6387 Fixed propertyIsEnumerable for numeric properties (Issue 1692).
6389 Fixed the MinGW and Windows 2000 builds.
6391 Fixed "Prototype chain is not searched if named property handler does
6392 not set a property" (Issue 1636).
6394 Made the RegExp.prototype object be a RegExp object (Issue 1217).
6396 Disallowed future reserved words as labels in strict mode.
6398 Fixed string split to correctly coerce the separator to a string
6401 API: Added an optional source length field to the Extension
6404 API: Added Debug::DisableAgent to match existing Debug::EnableAgent
6407 Added "native" target to Makefile for the benefit of Linux distros.
6409 Fixed: debugger stops stepping outside evaluate (Issue 1639).
6411 More work on ES-Harmony proxies. Still hidden behind a flag.
6413 Bug fixes and performance improvements on all platforms.
6416 2011-09-15: Version 3.6.4
6418 Fixed d8's broken readline history.
6420 Removed the need for code delete events in CPU profiler (Issue 1466).
6422 Fixed debugger stepping next with trycatch recursion (Issue 1639).
6424 Fixing parallel execution in d8 (with -p) and some memory leaks.
6426 Support for precise stepping in functions compiled before debugging was
6430 2011-09-13: Version 3.6.3
6432 Implemented better support of typed arrays in the d8 shell.
6434 Bug fixes and performance improvements on all platforms.
6437 2011-09-08: Version 3.6.2
6439 Added "dependencies" target to top-level Makefile.
6441 Added ability to turn profiler on/off in d8.
6443 Added "soname_version" parameter to common.gypi, v8.gyp, and Makefile.
6445 Fixed several crash bugs.
6448 2011-09-07: Version 3.6.1
6450 Fixed a bug in abrupt exit from with or catch inside finally.
6452 Fixed possible crash in FixedDoubleArray::Initialize() (Chromium
6455 Fixed a bug in Page::GetRegionMaskForSpan (Chromium issue 94425).
6457 Fixed a few clang warnings (which -Werror treated as errors).
6459 Performance improvements on all platforms.
6462 2011-09-05: Version 3.6.0
6464 Fixed a bug when optimizing named function expression (issue 1647).
6466 Fixed a bug when optimizing f.call.apply (issue 1650).
6468 Made arguments and caller always be null on native functions
6469 (issues 1548 and 1643).
6471 Fixed issue 1648 (cross-compiling x64 targeting ia32).
6473 Fixed issue 371 (d8 printing of strings containing \0).
6475 Fixed order of evaluation in arguments to parseInt (issue 1649).
6477 Fixed a problem with large heap snapshots in Chrome DevTools
6478 (issue 1658, chromium issue 89268).
6480 Upped default maximum heap size from 512M to 700M.
6483 2011-08-31: Version 3.5.10
6485 Added dependency of v8_base on WinSocket2 Windows library in
6491 2011-08-29: Version 3.5.9
6493 Made FromPropertyDescriptor not trigger inherited setters.
6495 Fixed .gyp files to work on the ARM simulator.
6497 Fixed shared library build warnings for MSVS.
6500 2011-08-24: Version 3.5.8
6502 Added V8EXPORT attributes for v8::Array::CheckCast and
6503 v8::Number::CheckCast.
6505 Made a slight API change enabling opting out from null termination
6506 in String::Write*().
6508 Fixed arm build for gcc-4.6.
6511 2011-08-22: Version 3.5.7
6513 Make scanner handle invalid unicode escapes in identifiers correctly.
6515 Make regexp flag parsing stricter.
6517 Fix several memory leaks.
6520 2011-08-17: Version 3.5.6
6522 Fixed issue that could cause crashes when running with --heap-stats.
6524 Fixed compilation on Linux 2.6.9 and older.
6526 Fixed live-object-list to work with isolates.
6528 Fixed memory leaks in zones and isolates.
6530 Fixed a performance regression for TypedArrays on x64.
6532 Stability improvements on all platforms.
6535 2011-08-15: Version 3.5.5
6537 Fixed bugs involving negative zero and the optimizing compiler.
6539 Fixed optimized version of Function.apply(x, arguments). (issue 1592)
6541 Eliminated uses of deprecated ARM instructions.
6543 Sped up Math.floor by using SSE 4.1 roundsd instruction on ia32.
6545 Removed restriction on the size of disassembled code that is printed.
6548 2011-08-10: Version 3.5.4
6550 Added a preliminary implementation of ES Harmony weak maps. Weak
6551 maps can be enabled by the flag --harmony-weakmaps.
6553 Introduced a toplevel Makefile to support GYP-based building. GYP
6554 can be obtained from http://gyp.googlecode.com.
6556 Fixed a bug in the length property of functions created by
6557 Function.prototype.bind.
6559 Reduced malloc heap allocation on process startup.
6561 Several important code generation bug fixes.
6563 Performance improvements on all platforms.
6566 2011-08-03: Version 3.5.3
6568 MIPS: Port of fix to ClassOf check from ARM.
6569 Patch from Paul Lind <plind44@gmail.com>.
6571 Stopped using mprotect on Cygwin.
6572 Avoided uninitialized member warning on gcc 4.3.4
6573 Both patches by Bert Belder.
6575 Bug fixes and performance improvements on all platforms.
6578 2011-08-01: Version 3.5.2
6580 Performance improvements on all platforms.
6583 2011-07-28: Version 3.5.1
6585 Fixed setting the readonly flag on the prototype property using the
6586 API call FunctionTemplate::SetPrototypeAttributes (issue 1539).
6588 Changed the tools/test.py script to use d8 instead of shell for
6591 Fixed crash in ToBooleanStub when GC happens during invocation.
6593 Enabled automatic unboxing of double arrays.
6595 Performance improvements on all platforms.
6598 2011-07-25: Version 3.5.0
6600 Implemented Object.prototype.{hasOwnProperty, propertyIsEnumerable} for
6603 Removed logging to memory support.
6605 Bugfixes and performance work.
6608 2011-07-20: Version 3.4.14
6610 Fix the debugger for strict-mode functions. (Chromium issue 89236)
6612 Add GetPropertyAttribute method for Object in the API. (Patch by
6615 Fix -Wunused-but-set-variable for gcc-4.6 on x64. (Issue 1291)
6618 2011-07-18: Version 3.4.13
6620 Improved debugger support to allow inspection of optimized frames (issue
6623 Fixed a bug in prototype transitions cache clearing introduced by r8165.
6625 Fixed shortcutting bug in HInferRepresentation. Patch by Andy Wingo.
6627 Fixed a memory leak in sample/shell.cc (dispose semaphores).
6629 Simplified HClampToUint8. Patch by Andy Wingo.
6631 Exposed APIs for detecting boxed primitives, native errors. Patch by
6634 Added map check for COW elements to crankshaft array handling code
6637 Sample shell and (a light version of) D8 links against a shared library
6640 Fixed bug in array filter and reduce functions (issue 1559).
6642 Avoid TLS load in AstNode constructor.
6644 Introduced a random entropy source which can optionally be provided at
6645 initialization. (Chromium issue 89462).
6648 2011-07-13: Version 3.4.12
6650 Added --prof profiling option to d8 shell.
6652 Fixed a bug where reading a directory in d8 shell hangs (issue 1533).
6654 Fixed a potential assertion failure in const declarations.
6656 Fixed an assertion failure in descriptor arrays (issue 1526).
6658 Enabled fast thread-local storage by default on supported platforms.
6660 Improved reporting of source position for global variable loads
6664 2011-07-11: Version 3.4.11
6666 Fixed MinGW32 build.
6668 Fixed a GC bug with RegExp code flushing.
6670 Implemented Object.defineProperty for proxies.
6672 Fixed a bug in for/in iteration of arguments objects (issue 1531).
6674 Added debugger support for inspecting optimized frames (issue 1140).
6676 Allowed JSObject::PreventExtensions to work for arguments objects.
6678 Bugfixes and performance work.
6681 2011-07-06: Version 3.4.10
6683 Fixed debugger not breaking on certain "if" statements (issue 1523).
6685 Fixed assertion failure in runtime profiler when running on IA32
6686 without snapshot (issue 1522).
6688 Fixed ABI for API calls on IA32 (for clang compatibility).
6690 Introduced code flushing of RegExp code to free memory used by
6693 Fixed linux-tick-processor built wrong version of v8 (issue 1532).
6695 Fixed assertion failure in v8::TryCache::StackTrace (issue 1529).
6697 Performance improvements on all platforms.
6700 2011-07-04: Version 3.4.9
6702 Added support for debugger inspection of locals in optimized frames
6705 Fixed SConstruct to pass correct defines to samples/preparser when
6706 building with library=shared.
6708 Made date parser handle ES5 Date Time Strings correctly (issue 1498).
6710 Fixed a bug in Object.defineProperty on the arguments object.
6712 Performance improvements on all platforms.
6715 2011-06-29: Version 3.4.8
6717 Ensure 16-byte stack alignment on Solaris (issue 1505).
6719 Fix "illegal access" when calling parseInt with a radix
6720 that is not a smi. (issue 1246).
6723 2011-06-27: Version 3.4.7
6725 Fixed 64-bit build on FreeBSD.
6727 Added API to set the property attributes for the prototype
6728 property on functions created from FunctionTemplates.
6730 Bugfixes and performance work.
6733 2011-06-22: Version 3.4.6
6735 Lowered limit on code space for systems with low memory supply.
6737 Allowed compiling v8_shell with the 'host' toolset (issue 82437).
6739 Extended setBreakpoint API to accept partial script name (issue 1418).
6741 Made multi-line comments not count when deciding whether the '-->'
6742 comment starter is first on a line. This matches Safari.
6744 Made handling of non-array recievers in Array length setter correct
6747 Added ability to heap profiler to iterate over snapshot's node
6751 2011-06-20: Version 3.4.5
6753 Fixed issues 794, 1097, 1215(partial), 1417, 1435, 1472, 1473,
6756 Improved code generation for !0 and !1.
6758 Reduced memory usage for regular expressions with nested qualifiers.
6761 Fixed V8 to count line terminators in multi-line comments.
6762 (Chromium issue 86431)
6764 Fixed disassembler=on option for release-mode builds. (issue 1473)
6766 Performance improvements on all platforms.
6769 2011-06-15: Version 3.4.4
6771 Added snapshot compression support and --stress-opt flag to d8.
6773 Improved performance of try/catch.
6775 Several GYP-related changes: Added support for building Xcode project
6776 files. Make the ARM simulator build with GYP again. Generate Makefiles
6777 for all architectures on Linux.
6779 Fixed Array.prototype.{reduce,reduceRight} to pass undefined as the
6780 receiver for strict mode callbacks. (issue 1436)
6782 Fixed a bug where an array load was incorrectly hoisted by GVN.
6784 Handle 'undefined' correctly when === has been specialized for doubles.
6787 Corrected the limit of local variables in an optimized function from 64
6790 Correctly set ReadOnly flag on indexed properties when using the API Set
6791 method. (issue 1470)
6793 Give the correct error message when Object.isExtensible is called on a
6794 non-object. (issue 1452)
6796 Added GetOwnPropertyNames method for Object in the API. Patch by Peter
6799 Do not redefine properties unneccesarily in seal and freeze. (issue
6802 IsExecutionTerminating has an Isolate parameter now.
6804 Distinguish keyed loads with a symbol key from fast elements loads,
6805 avoiding some useless deoptimizations. (issue 1471)
6808 2011-06-08: Version 3.4.3
6810 Clear the global thread table when an isolate is disposed
6813 Converted time zone name to UTF8 on Windows (issue 1290).
6815 Limited the number of arguments in a function call to 32766
6818 Compress sources of JS libraries in addition to the snapshot.
6820 Fixed a bug in Lithium environment iteration.
6822 Performance improvements on all platforms.
6825 2011-06-06: Version 3.4.2
6827 More work on ES-Harmony proxies. Still hidden behind a flag.
6829 Fixed some crash bugs and improved performance.
6831 Fixed building with gdb debugging support.
6833 Do not install SIGPROF handler until it is needed.
6835 Added DateTimeFormat to i18n API.
6837 Fixed compilation on OpenBSD.
6839 Take the ulimit into account when sizing the heap. OpenBSD users
6840 may still have to increase the default ulimit to run heavy pages in
6844 2011-06-01: Version 3.4.1
6846 Fixed JSON stringify issue with arrays.
6848 Changed calls to JS builtins to be passed undefined when called with
6851 Implemented the set trap for Harmony proxies. Proxies still need to
6852 be enabled with the --harmony-proxies flag.
6855 2011-05-30: Version 3.4.0
6857 Changed calls to undefined property setters to not throw (issue 1355).
6859 Made RegExp objects not callable.
6861 Fixed issues on special case large JSON strings in new json parser
6862 (issues http://crbug.com/83877 and http://crbug.com/84186).
6864 Performance improvements on all platforms.
6867 2011-05-25: Version 3.3.10
6869 Fixed calls of strict mode function with an implicit receiver.
6871 Fixed fast handling of arrays to properly deal with changes to the
6872 Object prototype (issue 1403).
6874 Changed strict mode poison pill to be the same type error function
6877 Fixed a debug crash in arguments object handling (issue 1227).
6879 Fixed a bug in deoptimization on x64 (issue 1404).
6881 Performance improvements and bug fixes on all platforms.
6884 2011-05-23: Version 3.3.9
6886 Added DateTimeFormat class to experimental i18n API.
6888 Extended preparser to give early errors for some strict mode
6891 Removed legacy execScript function from V8.
6893 Extended isolate API with the ability to add embedder-specific
6896 Added basic support for polymorphic loads from JS and external
6899 Fixed bug in handling of switch statements in the optimizing
6903 2011-05-18: Version 3.3.8
6905 Added MarkIndependent to the persistent handle API. Independent
6906 handles are independent of all other persistent handles and can be
6907 garbage collected more frequently.
6909 Implemented the get trap for Harmony proxies. Proxies are enabled
6910 with the --harmony-proxies flag.
6912 Performance improvements and bug fixes on all platforms.
6915 2011-05-16: Version 3.3.7
6917 Updated MIPS infrastructure files.
6919 Performance improvements and bug fixes on all platforms.
6922 2011-05-11: Version 3.3.6
6924 Updated MIPS infrastructure files.
6926 Added method IsCallable for Object to the API.
6927 Patch by Peter Varga.
6930 2011-05-09: Version 3.3.5
6932 Fixed build on FreeBSD. Patch by Akinori MUSHA.
6934 Added check that receiver is JSObject on API calls.
6936 Implemented CallAsConstructor method for Object in the API (Issue 1348).
6937 Patch by Peter Varga.
6939 Added CallAsFunction method to the Object class in the API (Issue 1336).
6940 Patch by Peter Varga.
6942 Added per-isolate locking and unlocking.
6944 Fixed bug in x64 >>> operator (Issue 1359).
6947 2011-05-04: Version 3.3.4
6949 Implemented API to disallow code generation from strings for a context
6952 Fixed bug with whitespaces in parseInt (issue 955).
6954 Fixed bug with == comparison of Date objects (issue 1356).
6956 Added GYP variables for ARM code generation:
6957 v8_can_use_vfp_instructions, v8_can_use_unaligned_accesses
6958 and v8_use_arm_eabi_hardfloat.
6961 2011-05-02: Version 3.3.3
6963 Added support for generating Visual Studio solution and project files
6966 Implemented support for ARM EABI calling convention variation where
6967 floating-point arguments are passed in registers (hardfloat).
6969 Added Object::HasOwnProperty() to the API.
6971 Added support for compressing startup data to reduce binary size. This
6972 includes build time support and an API for the embedder to decompress
6973 the startup data before initializing V8.
6975 Reduced the profiling hooks overhead from >400% to 25% when using
6978 Performance improvements and bug fixes on all platforms.
6981 2011-04-27: Version 3.3.2
6983 Fixed crash bug on ARM with no VFP3 hardware.
6985 Fixed compilation of V8 without debugger support.
6987 Improved performance on JSLint.
6989 Added support Float64 WebGL arrays.
6991 Fixed crash bug in regexp replace.
6994 2011-04-20: Version 3.3.1
6996 Reduced V8 binary size by removing virtual functions from hydrogen.
6998 Fixed crash bug on x64.
7000 Performance improvements on ARM and IA32.
7003 2011-04-18: Version 3.3.0
7005 Fixed bug in floating point rounding in Crankshaft on ARM
7008 Fixed a number of issues with running without VFPv3 support on ARM
7011 Introduced v8Locale.Collator, a partial implementation of Collator
7012 per last ECMAScript meeting + mailing list.
7014 Minor performance improvements and bug fixes.
7017 2011-04-13: Version 3.2.10
7019 Fixed bug in external float arrays on ARM (issue 1323).
7021 Minor performance improvements and bug fixes.
7024 2011-04-11: Version 3.2.9
7026 Removed support for ABI prior to EABI on ARM.
7028 Fixed multiple crash bugs.
7030 Added GCMole to the repository, a simple static analysis tool that
7031 searches for GC-unsafe evaluation order dependent callsites.
7033 Made preparser API be exported in shared libraries.
7035 Fixed multiple issues in EcmaScript 5 strict mode implementation.
7037 Fixed mutable __proto__ property if object is not extensible
7040 Fixed auto suspension of the sampler thread.
7043 2011-04-06: Version 3.2.8
7045 Exposed WebGL typed array constructors in the shell sample.
7047 Performance improvements on all platforms.
7050 2011-04-04: Version 3.2.7
7052 Disabled the original 'classic' V8 code generator. Crankshaft is
7053 now the default on all platforms.
7055 Changed the heap profiler to use more descriptive names.
7057 Performance and stability improvements to isolates on all platforms.
7060 2011-03-30: Version 3.2.6
7062 Fixed xcode build warning in shell.cc (out of order initialization).
7064 Fixed null-pointer dereference in the compiler when running without
7065 SSE3 support (Chromium issue 77654).
7067 Fixed x64 compilation error due to some dead code. (Issue 1286)
7069 Introduced scons target to build the preparser stand-alone example.
7071 Made FreeBSD build and pass all tests.
7074 2011-03-28: Version 3.2.5
7076 Fixed build with Irregexp interpreter (issue 1266).
7078 Added Crankshaft support for external arrays.
7080 Fixed two potential crash bugs.
7083 2011-03-23: Version 3.2.4
7085 Added isolates which allows several V8 instances in the same process.
7086 This is controlled through the new Isolate class in the API.
7088 Implemented more of EcmaScript 5 strict mode.
7090 Reduced the time it takes to make detailed heap snapshot.
7092 Added a number of commands to the ARM simulator and enhanced the ARM
7096 2011-03-17: Version 3.2.3
7098 Fixed a number of crash bugs.
7100 Fixed Array::New(length) to return an array with a length (issue 1256).
7102 Fixed FreeBSD build.
7104 Changed __defineGetter__ to not throw (matching the behavior of Safari).
7106 Implemented more of EcmaScript 5 strict mode.
7108 Improved Crankshaft performance on all platforms.
7111 2011-03-14: Version 3.2.2
7113 Fixed a number of crash and correctness bugs.
7115 Improved Crankshaft performance on all platforms.
7117 Fixed Crankshaft on Solaris/Illumos.
7120 2011-03-10: Version 3.2.1
7122 Fixed a number of crash bugs.
7124 Improved Crankshaft for x64 and ARM.
7126 Implemented more of EcmaScript 5 strict mode.
7129 2011-03-07: Version 3.2.0
7131 Fixed a number of crash bugs.
7133 Turned on Crankshaft by default on x64 and ARM.
7135 Improved Crankshaft for x64 and ARM.
7137 Implemented more of EcmaScript 5 strict mode.
7140 2011-03-02: Version 3.1.8
7142 Fixed a number of crash bugs.
7144 Improved Crankshaft for x64 and ARM.
7146 Implemented more of EcmaScript 5 strict mode.
7148 Fixed issue with unaligned reads and writes on ARM.
7150 Improved heap profiler support.
7153 2011-02-28: Version 3.1.7
7155 Fixed a number of crash bugs.
7157 Improved Crankshaft for x64 and ARM.
7159 Fixed implementation of indexOf/lastIndexOf for sparse
7160 arrays (http://crbug.com/73940).
7162 Fixed bug in map space compaction (http://crbug.com/59688).
7164 Added support for direct getter accessors calls on ARM.
7167 2011-02-24: Version 3.1.6
7169 Fixed a number of crash bugs.
7171 Added support for Cygwin (issue 64).
7173 Improved Crankshaft for x64 and ARM.
7175 Added Crankshaft support for stores to pixel arrays.
7177 Fixed issue in CPU profiler with Crankshaft.
7180 2011-02-16: Version 3.1.5
7182 Change RegExp parsing to disallow /(*)/.
7184 Added GDB JIT support for ARM.
7186 Fixed several crash bugs.
7188 Performance improvements on the IA32 platform.
7191 2011-02-14: Version 3.1.4
7193 Fixed incorrect compare of prototypes of the global object (issue
7196 Fixed a bug in optimizing calls to global functions (issue 1106).
7198 Made optimized Function.prototype.apply safe for non-JSObject first
7199 arguments (issue 1128).
7201 Fixed an error related to element accessors on Object.prototype and
7202 parser errors (issue 1130).
7204 Fixed a bug in sorting an array with large array indices (issue 1131).
7206 Properly treat exceptions thrown while compiling (issue 1132).
7208 Fixed bug in register requirements for function.apply (issue 1133).
7210 Fixed a representation change bug in the Hydrogen graph construction
7213 Fixed the semantics of delete on parameters (issue 1136).
7215 Fixed a optimizer bug related to moving instructions with side effects
7218 Added support for the global object in Object.keys (issue 1150).
7220 Fixed incorrect value for Math.LOG10E
7221 (issue http://code.google.com/p/chromium/issues/detail?id=72555)
7223 Performance improvements on the IA32 platform.
7225 Implement assignment to undefined reference in ES5 Strict Mode.
7228 2011-02-09: Version 3.1.3
7230 Fixed a bug triggered by functions with huge numbers of declared
7233 Fixed zap value aliasing a real object - debug mode only (issue 866).
7235 Fixed issue where Array.prototype.__proto__ had been set to null
7238 Fixed stability bugs in Crankshaft for x86.
7241 2011-02-07: Version 3.1.2
7243 Added better security checks when accessing properties via
7244 Object.getOwnPropertyDescriptor.
7246 Fixed bug in Object.defineProperty and related access bugs (issues
7247 992, 1083 and 1092).
7249 Added LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to ease
7250 copyright notice generation for embedders.
7253 2011-02-02: Version 3.1.1
7255 Perform security checks before fetching the value in
7256 Object.getOwnPropertyDescriptor.
7258 Fixed a bug in Array.prototype.splice triggered by passing no
7261 Fixed bugs in -0 in arithmetic and in Math.pow.
7263 Fixed bugs in the register allocator and in switching from optimized
7264 to unoptimized code.
7267 2011-01-31: Version 3.1.0
7269 Performance improvements on all platforms.
7272 2011-01-28: Version 3.0.12
7274 Added support for strict mode parameter and object property
7277 Fixed a couple of crash bugs.
7280 2011-01-25: Version 3.0.11
7282 Fixed a bug in deletion of lookup slots that could cause global
7283 variables to be accidentally deleted (http://crbug.com/70066).
7285 Added support for strict mode octal literal verification.
7287 Fixed a couple of crash bugs (issues 1070 and 1071).
7290 2011-01-24: Version 3.0.10
7292 Fixed External::Wrap for 64-bit addresses (issue 1037).
7294 Fixed incorrect .arguments variable proxy handling in the full
7295 code generator (issue 1060).
7297 Introduced partial strict mode support.
7299 Changed formatting of recursive error messages to match Firefox and
7300 Safari (issue http://crbug.com/70334).
7302 Fixed incorrect rounding for float-to-integer conversions for external
7303 array types, which implement the Typed Array spec
7304 (issue http://crbug.com/50972).
7306 Performance improvements on the IA32 platform.
7309 2011-01-19: Version 3.0.9
7311 Added basic GDB JIT Interface integration.
7313 Make invalid break/continue statements a syntax error instead of a
7317 2011-01-17: Version 3.0.8
7319 Exposed heap size limit to the heap statistics gathered by
7320 the GetHeapStatistics API.
7322 Wrapped external pointers more carefully (issue 1037).
7324 Hardened the implementation of error objects to avoid setters
7325 intercepting the properties set then throwing an error.
7327 Avoided trashing the FPSCR when calculating Math.floor on ARM.
7329 Performance improvements on the IA32 platform.
7332 2011-01-10: Version 3.0.7
7334 Stopped calling inherited setters when creating object literals
7337 Changed interpretation of malformed \c? escapes in RegExp to match
7340 Enhanced the command-line debugger interface and fixed some minor
7341 bugs in the debugger.
7343 Performance improvements on the IA32 platform.
7346 2011-01-05: Version 3.0.6
7348 Allowed getters and setters on JSArray elements (issue 900).
7350 Stopped JSON objects from hitting inherited setters (part of
7353 Allowed numbers and strings as names of getters/setters in object
7354 initializer (issue 820).
7356 Added use_system_v8 option to gyp (off by default), to make it easier
7357 for Linux distributions to ship with system-provided V8 library.
7359 Exported external array data accessors (issue 1016).
7361 Added labelled thread names to help with debugging (on Linux).
7364 2011-01-03: Version 3.0.5
7366 Fixed a couple of cast errors for gcc-3.4.3.
7368 Performance improvements in GC and IA32 code generator.
7371 2010-12-21: Version 3.0.4
7373 Added Date::ResetCache() to the API so that the cached values in the
7374 Date object can be reset to allow live DST / timezone changes.
7376 Extended existing support for printing (while debugging) the contents
7377 of objects. Added support for printing objects from release builds.
7379 Fixed V8 issues 989, 1006, and 1007.
7382 2010-12-17: Version 3.0.3
7384 Reapplied all changes for version 3.0.1.
7386 Improved debugger protocol for remote debugging.
7388 Added experimental support for using gyp to generate build files
7391 Fixed implementation of String::Write in the API (issue 975).
7394 2010-12-15: Version 3.0.2
7396 Revert version 3.0.1 and patch 3.0.1.1.
7399 2010-12-13: Version 3.0.1
7401 Added support for an experimental internationalization API as an
7402 extension. This extension is disabled by default but can be enabled
7403 when building V8. The ECMAScript internationalization strawman is
7404 at http://wiki.ecmascript.org/doku.php?id=strawman:i18n_api.
7406 Made RegExp character class parsing stricter. This mirrors a change
7407 to RegExp parsing in WebKit.
7409 Fixed a bug in Object.defineProperty when used to change attributes
7410 of an existing property. It incorrectly set the property value to
7411 undefined (issue 965).
7413 Fixed several different compilation failures on various platforms
7414 caused by the 3.0.0 release.
7416 Optimized Math.pow so it can work on unboxed doubles.
7418 Sped up quoting of JSON strings by removing one traversal of the
7422 2010-12-07: Version 3.0.0
7424 Improved performance by (partially) addressing issue 957 on
7425 IA-32. Still needs more work for the other architectures.
7428 2010-11-29: Version 2.5.9
7430 Fixed crashes during GC caused by partially initialize heap
7433 Fixed bug in process sample that caused memory leaks.
7435 Improved performance on ARM by implementing missing stubs and
7438 Improved heap profiler support.
7440 Added separate seeding on Windows of the random number generator
7441 used internally by the compiler (issue 936).
7443 Exposed API for getting the name of the function used to construct
7446 Fixed date parser to handle one and two digit millisecond
7449 Fixed number parsing to disallow space between sign and
7453 2010-11-23: Version 2.5.8
7455 Removed dependency on Gay's dtoa.
7457 Improved heap profiler precision and speed.
7459 Reduced overhead of callback invocations on ARM.
7462 2010-11-18: Version 2.5.7
7464 Fixed obscure evaluation order bug (issue 931).
7466 Split the random number state between JavaScript and the private API.
7468 Fixed performance bug causing GCs when generating stack traces on
7469 code from very large scripts.
7471 Fixed bug in parser that allowed (foo):42 as a labelled statement
7474 Provide more accurate results about used heap size via
7477 Allow build-time customization of the max semispace size.
7479 Made String.prototype.split honor limit when separator is empty
7482 Added missing failure check after expecting an identifier in
7483 preparser (Chromium issue 62639).
7486 2010-11-10: Version 2.5.6
7488 Added support for VFP rounding modes to the ARM simulator.
7490 Fixed multiplication overflow bug (issue 927).
7492 Added a limit for the amount of executable memory (issue 925).
7495 2010-11-08: Version 2.5.5
7497 Added more aggressive GC of external objects in near out-of-memory
7500 Fixed a bug that gave the incorrect result for String.split called
7501 on the empty string (issue 924).
7504 2010-11-03: Version 2.5.4
7506 Improved V8 VFPv3 runtime detection to address issue 914.
7509 2010-11-01: Version 2.5.3
7511 Fixed a bug that prevents constants from overwriting function values
7512 in object literals (issue 907).
7514 Fixed a bug with reporting of impossible nested calls of DOM functions
7515 (issue http://crbug.com/60753).
7518 2010-10-27: Version 2.5.2
7520 Improved sampler resolution on Linux.
7522 Allowed forcing the use of a simulator from the build script
7523 independently of the host architecture.
7525 Fixed FreeBSD port (issue 912).
7527 Made windows-tick-processor respect D8_PATH.
7529 Implemented --noinline-new flag fully on IA32, X64 and ARM platforms.
7532 2010-10-20: Version 2.5.1
7534 Fixed bug causing spurious out of memory exceptions
7535 (issue http://crbug.com/54580).
7537 Fixed compilation error on Solaris platform (issue 901).
7539 Fixed error in strtod (string to floating point number conversion)
7540 due to glibc's use of 80-bit floats in the FPU on 32-bit linux.
7542 Adjusted randomized allocations of executable memory to have 64k
7543 granularity (issue http://crbug.com/56036).
7545 Supported profiling using kernel perf_events on linux. Added ll_prof
7546 script to tools and --ll-prof flag to V8.
7549 2010-10-18: Version 2.5.0
7551 Fixed bug in cache handling of lastIndex on global regexps
7552 (issue http://crbug.com/58740).
7554 Added USE_SIMULATOR macro that explicitly indicates that we wish to use
7555 the simulator as the execution engine (by Mark Lam <mark.lam@palm.com>
7556 from Hewlett-Packard Development Company, LP).
7558 Fixed compilation error on ARM with gcc 4.4 (issue 894).
7561 2010-10-13: Version 2.4.9
7563 Fixed a bug in the handling of conditional expressions in test
7564 contexts in compiler for top-level code.
7566 Added "//@ sourceURL" information to the StackTrace API.
7568 Exposed RegExp construction through the API.
7571 2010-10-04: Version 2.4.8
7573 Fixed a bug in ResumeProfilerEx causing it to not always write out the
7574 whole snapshot (issue 868).
7576 Performance improvements on all platforms.
7579 2010-09-30: Version 2.4.7
7581 Changed the command-line flag --max-new-space-size to be in kB and the
7582 flag --max-old-space-size to be in MB (previously they were in bytes).
7584 Added Debug::CancelDebugBreak to the debugger API.
7586 Fixed a bug in getters for negative numeric property names
7587 (https://bugs.webkit.org/show_bug.cgi?id=46689).
7589 Performance improvements on all platforms.
7592 2010-09-27: Version 2.4.6
7594 Fixed assertion failure related to copy-on-write arrays (issue 876).
7596 Fixed build failure of 64-bit V8 on Windows.
7598 Fixed a bug in RegExp (issue http://crbug.com/52801).
7600 Improved the profiler's coverage to cover more functions (issue 858).
7602 Fixed error in shift operators on 64-bit V8
7603 (issue http://crbug.com/54521).
7606 2010-09-22: Version 2.4.5
7608 Changed the RegExp benchmark to exercise the regexp engine on different
7609 inputs by scrambling the input strings.
7611 Fixed a bug in keyed loads on strings.
7613 Fixed a bug with loading global function prototypes.
7615 Fixed a bug with profiling RegExp calls (issue http://crbug.com/55999).
7617 Performance improvements on all platforms.
7620 2010-09-15: Version 2.4.4
7622 Fixed bug with hangs on very large sparse arrays.
7624 Now tries harder to free up memory when running out of space.
7626 Added heap snapshots to JSON format to API.
7628 Recalibrated benchmarks.
7631 2010-09-13: Version 2.4.3
7633 Made Date.parse properly handle TZ offsets (issue 857).
7635 Performance improvements on all platforms.
7638 2010-09-08: Version 2.4.2
7642 Fixed stack corruption bug.
7644 Fixed compilation for newer C++ compilers that found Operand(0)
7648 2010-09-06: Version 2.4.1
7650 Added the ability for an embedding application to receive a callback
7651 when V8 allocates (V8::AddMemoryAllocationCallback) or deallocates
7652 (V8::RemoveMemoryAllocationCallback) from the OS.
7654 Fixed several JSON bugs (including issue 855).
7656 Fixed memory overrun crash bug triggered during V8's tick-based
7659 Performance improvements on all platforms.
7662 2010-09-01: Version 2.4.0
7664 Fixed bug in Object.freeze and Object.seal when Array.prototype or
7665 Object.prototype are changed (issue 842).
7667 Updated Array.splice to follow Safari and Firefox when called
7668 with zero arguments.
7670 Fixed a missing live register when breaking at keyed loads on ARM.
7672 Performance improvements on all platforms.
7675 2010-08-25: Version 2.3.11
7677 Fixed bug in RegExp related to copy-on-write arrays.
7679 Refactored tools/test.py script, including the introduction of
7680 VARIANT_FLAGS that allows specification of sets of flags with which
7681 all tests should be run.
7683 Fixed a bug in the handling of debug breaks in CallIC.
7685 Performance improvements on all platforms.
7688 2010-08-23: Version 2.3.10
7690 Fixed bug in bitops on ARM.
7692 Build fixes for unusual compilers.
7694 Track high water mark for RWX memory.
7696 Performance improvements on all platforms.
7699 2010-08-18: Version 2.3.9
7701 Fixed compilation for ARMv4 on OpenBSD/FreeBSD.
7703 Removed specialized handling of GCC 4.4 (issue 830).
7705 Fixed DST cache to take into account the suspension of DST in
7706 Egypt during the 2010 Ramadan (issue http://crbug.com/51855).
7708 Performance improvements on all platforms.
7711 2010-08-16: Version 2.3.8
7713 Fixed build with strict aliasing on GCC 4.4 (issue 463).
7715 Fixed issue with incorrect handling of custom valueOf methods on
7716 string wrappers (issue 760).
7718 Fixed compilation for ARMv4 (issue 590).
7720 Improved performance.
7723 2010-08-11: Version 2.3.7
7725 Reduced size of heap snapshots produced by heap profiler (issue 783).
7727 Introduced v8::Value::IsRegExp method.
7729 Fixed CPU profiler crash in start / stop sequence when non-existent
7730 name is passed (issue http://crbug.com/51594).
7732 Introduced new indexed property query callbacks API (issue 816). This
7733 API is guarded by USE_NEW_QUERY_CALLBACK define and is disabled
7736 Removed support for object literal get/set with number/string
7739 Fixed handling of JSObject::elements in CalculateNetworkSize
7742 Allowed compiling with strict aliasing enabled on GCC 4.4 (issue 463).
7745 2010-08-09: Version 2.3.6
7747 RegExp literals create a new object every time they are evaluated
7750 Object.seal and Object.freeze return the modified object (issue 809).
7752 Fixed building using GCC 4.4.4.
7755 2010-08-04: Version 2.3.5
7757 Added support for ES5 property names. Object initialisers and
7758 dot-notation property access now allows keywords. Also allowed
7759 non-identifiers after "get" or "set" in an object initialiser.
7761 Randomized the addresses of allocated executable memory on Windows.
7764 2010-08-02: Version 2.3.4
7766 Fixed problems in implementation of ES5 function.prototype.bind.
7768 Fixed error when using apply with arguments object on ARM (issue 784).
7770 Added setting of global flags to debugger protocol.
7772 Fixed an error affecting cached results of sin and cos (issue 792).
7774 Removed memory leak from a boundary case where V8 is not initialized.
7776 Fixed issue where debugger could set breakpoints outside the body
7779 Fixed issue in debugger when using both live edit and step in features.
7781 Added Number-letter (Nl) category to Unicode tables. These characters
7782 can now be used in identifiers.
7784 Fixed an assert failure on X64 (issue 806).
7786 Performance improvements on all platforms.
7789 2010-07-26: Version 2.3.3
7791 Fixed error when building the d8 shell in a fresh checkout.
7793 Implemented Function.prototype.bind (ES5 15.3.4.5).
7795 Fixed an error in inlined stores on ia32.
7797 Fixed an error when setting a breakpoint at the end of a function
7798 that does not end with a newline character.
7800 Performance improvements on all platforms.
7803 2010-07-21: Version 2.3.2
7805 Fixed compiler warnings when building with LLVM.
7807 Fixed a bug with for-in applied to strings (issue 785).
7809 Performance improvements on all platforms.
7812 2010-07-19: Version 2.3.1
7814 Fixed compilation and linking with V8_INTERPRETED_REGEXP flag.
7816 Fixed bug related to code flushing while compiling a lazy
7817 compilable function (issue http://crbug.com/49099).
7819 Performance improvements on all platforms.
7822 2010-07-15: Version 2.3.0
7824 Added ES5 Object.seal and Object.isSealed.
7826 Added debugger API for scheduling debugger commands from a
7830 2010-07-14: Version 2.2.24
7832 Added API for capturing stack traces for uncaught exceptions.
7834 Fixed crash bug when preparsing from a non-external V8 string
7837 Fixed JSON.parse bug causing input not to be converted to string
7840 Added ES5 Object.freeze and Object.isFrozen.
7842 Performance improvements on all platforms.
7845 2010-07-07: Version 2.2.23
7847 API change: Convert Unicode code points outside the basic multilingual
7848 plane to the replacement character. Previous behavior was to silently
7849 truncate the value to 16 bits.
7851 Fixed crash: handle all flat string types in regexp replace.
7853 Prevent invalid pre-parsing data passed in through the API from
7856 Performance improvements on all platforms.
7859 2010-07-05: Version 2.2.22
7861 Added ES5 Object.isExtensible and Object.preventExtensions.
7863 Enabled building V8 as a DLL.
7865 Fixed a bug in date code where -0 was not interpreted as 0
7868 Performance improvements on all platforms.
7871 2010-06-30: Version 2.2.21
7873 Fixed bug in externalizing some ASCII strings (Chromium issue 47824).
7875 Updated JSON.stringify to floor the space parameter (issue 753).
7877 Updated the Mozilla test expectations to the newest version.
7879 Updated the ES5 Conformance Test expectations to the latest version.
7881 Updated the V8 benchmark suite.
7883 Provide actual breakpoints locations in response to setBreakpoint
7884 and listBreakpoints requests.
7887 2010-06-28: Version 2.2.20
7889 Fixed bug with for-in on x64 platform (issue 748).
7891 Fixed crash bug on x64 platform (issue 756).
7893 Fixed bug in Object.getOwnPropertyNames. (chromium issue 41243).
7895 Fixed a bug on ARM that caused the result of 1 << x to be
7896 miscalculated for some inputs.
7898 Performance improvements on all platforms.
7901 2010-06-23: Version 2.2.19
7903 Fixed bug that causes the build to break when profillingsupport=off
7906 Added expose-externalize-string flag for testing extensions.
7908 Resolve linker issues with using V8 as a DLL causing a number of
7909 problems with unresolved symbols.
7911 Fixed build failure for cctests when ENABLE_DEBUGGER_SUPPORT is not
7914 Performance improvements on all platforms.
7917 2010-06-16: Version 2.2.18
7919 Added API functions to retrieve information on indexed properties
7920 managed by the embedding layer. Fixes bug 737.
7922 Made ES5 Object.defineProperty support array elements. Fixes bug 619.
7924 Added heap profiling to the API.
7926 Removed old named property query from the API.
7928 Incremental performance improvements.
7931 2010-06-14: Version 2.2.17
7933 Improved debugger support for stepping out of functions.
7935 Incremental performance improvements.
7938 2010-06-09: Version 2.2.16
7940 Removed the SetExternalStringDiposeCallback API. Changed the
7941 disposal of external string resources to call a virtual Dispose
7942 method on the resource.
7944 Added support for more precise break points when debugging and
7947 Memory usage improvements on all platforms.
7950 2010-06-07: Version 2.2.15
7952 Added an API to control the disposal of external string resources.
7954 Added missing initialization of a couple of variables which makes
7955 some compilers complaint when compiling with -Werror.
7957 Improved performance on all platforms.
7960 2010-06-02: Version 2.2.14
7962 Fixed a crash in code generated for String.charCodeAt.
7964 Fixed a compilation issue with some GCC versions (issue 727).
7966 Performance optimizations on x64 and ARM platforms.
7969 2010-05-31: Version 2.2.13
7971 Implemented Object.getOwnPropertyDescriptor for element indices and
7972 strings (issue 599).
7974 Fixed bug for windows 64 bit C calls from generated code.
7976 Added new scons flag unalignedaccesses for arm builds.
7978 Performance improvements on all platforms.
7981 2010-05-26: Version 2.2.12
7983 Allowed accessors to be defined on objects rather than just object
7986 Changed the ScriptData API.
7989 2010-05-21: Version 2.2.11
7991 Fixed crash bug in liveedit on 64 bit.
7993 Use 'full compiler' when debugging is active. This should increase
7994 the density of possible break points, making single step more fine
7995 grained. This will only take effect for functions compiled after
7996 debugging has been started, so recompilation of all functions is
7997 required to get the full effect. IA32 and x64 only for now.
7999 Misc. fixes to the Solaris build.
8001 Added new flags --print-cumulative-gc-stat and --trace-gc-nvp.
8003 Added filtering of CPU profiles by security context.
8005 Fixed crash bug on ARM when running without VFP2 or VFP3.
8007 Incremental performance improvements in all backends.
8010 2010-05-17: Version 2.2.10
8012 Performance improvements in the x64 and ARM backends.
8015 2010-05-10: Version 2.2.9
8017 Allowed Object.create to be called with a function (issue 697).
8019 Fixed bug with Date.parse returning a non-NaN value when called on a
8020 non date string (issue 696).
8022 Allowed unaligned memory accesses on ARM targets that support it (by
8023 Subrato K De of CodeAurora <subratokde@codeaurora.org>).
8025 C++ API for retrieving JavaScript stack trace information.
8028 2010-05-05: Version 2.2.8
8030 Performance improvements in the x64 and ARM backends.
8033 2010-05-03: Version 2.2.7
8035 Added support for ES5 date time string format to Date.parse.
8037 Performance improvements in the x64 backend.
8040 2010-04-28: Version 2.2.6
8042 Added "amd64" as recognized architecture in scons build script
8043 (by Ryan Dahl <coldredlemur@gmail.com>).
8045 Fixed bug in String search and replace with very simple RegExps.
8047 Fixed bug in RegExp containing "\b^".
8049 Performance improvements on all platforms.
8052 2010-04-26: Version 2.2.5
8054 Various performance improvements (especially for ARM and x64)
8056 Fixed bug in CPU profiling (http://crbug.com/42137)
8058 Fixed a bug with the natives cache.
8060 Fixed two bugs in the ARM code generator that can cause
8063 Fixed a bug that may cause a wrong result for shift operations.
8066 2010-04-21: Version 2.2.4
8068 Fixed warnings on arm on newer GCC versions.
8070 Fixed a number of minor bugs.
8072 Performance improvements on all platforms.
8075 2010-04-14: Version 2.2.3
8077 Added stack command and mem command to ARM simulator debugger.
8079 Fixed scons snapshot and ARM build, and Windows X64 build issues.
8081 Performance improvements on all platforms.
8084 2010-04-12: Version 2.2.2
8086 Introduced new profiler API.
8088 Fixed random number generator to produce full 32 random bits.
8091 2010-04-06: Version 2.2.1
8093 Debugger improvements.
8098 2010-03-29: Version 2.2.0
8100 Fixed a few minor bugs.
8102 Performance improvements for string operations.
8105 2010-03-26: Version 2.1.10
8107 Fixed scons build issues.
8109 Fixed a couple of minor bugs.
8112 2010-03-25: Version 2.1.9
8114 Added API support for reattaching a global object to a context.
8116 Extended debugger API with access to the internal debugger context.
8118 Fixed Chromium crashes (issues http://crbug.com/39128 and
8119 http://crbug.com/39160)
8122 2010-03-24: Version 2.1.8
8124 Added fine-grained garbage collection callbacks to the API.
8126 Performance improvements on all platforms.
8129 2010-03-22: Version 2.1.7
8133 Fixed a bug where __proto__ was sometimes enumerated (issue 646).
8135 Performance improvements for arithmetic operations.
8137 Performance improvements for string operations.
8139 Print script name and line number information in stack trace.
8142 2010-03-17: Version 2.1.6
8144 Performance improvements for arithmetic operations.
8146 Performance improvements for string operations.
8149 2010-03-10: Version 2.1.4
8151 Fixed code cache lookup for keyed IC's (issue http://crbug.com/37853).
8153 Performance improvements on all platforms.
8156 2010-03-10: Version 2.1.3
8158 Added API method for context-disposal notifications.
8160 Added API method for accessing elements by integer index.
8162 Added missing implementation of Uint32::Value and Value::IsUint32
8165 Added IsExecutionTerminating API method.
8167 Disabled strict aliasing for GCC 4.4.
8169 Fixed string-concatenation bug (issue 636).
8171 Performance improvements on all platforms.
8174 2010-02-23: Version 2.1.2
8176 Fixed a crash bug caused by wrong assert.
8178 Fixed a bug with register names on 64-bit V8 (issue 615).
8180 Performance improvements on all platforms.
8183 2010-02-19: Version 2.1.1
8185 [ES5] Implemented Object.defineProperty.
8187 Improved profiler support.
8189 Added SetPrototype method in the public V8 API.
8191 Added GetScriptOrigin and GetScriptLineNumber methods to Function
8194 Performance improvements on all platforms.
8197 2010-02-03: Version 2.1.0
8199 Values are now always wrapped in objects when used as a receiver.
8202 [ES5] Implemented Object.getOwnPropertyNames.
8204 [ES5] Restrict JSON.parse to only accept strings that conforms to the
8207 Improvement of debugger agent (issue 549 and 554).
8209 Fixed problem with skipped stack frame in profiles (issue 553).
8211 Solaris support by Erich Ocean <erich.ocean@me.com> and Ryan Dahl
8212 <ry@tinyclouds.org>.
8214 Fixed a bug that Math.round() returns incorrect results for huge
8217 Fixed enumeration order for objects created from some constructor
8218 functions (isue http://crbug.com/3867).
8220 Fixed arithmetic on some integer constants (issue 580).
8222 Numerous performance improvements including porting of previous IA-32
8223 optimizations to x64 and ARM architectures.
8226 2010-01-14: Version 2.0.6
8228 Added ES5 Object.getPrototypeOf, GetOwnPropertyDescriptor,
8229 GetOwnProperty, FromPropertyDescriptor.
8231 Fixed Mac x64 build errors.
8233 Improved performance of some math and string operations.
8235 Improved performance of some regexp operations.
8237 Improved performance of context creation.
8239 Improved performance of hash tables.
8242 2009-12-18: Version 2.0.5
8244 Extended to upper limit of map space to allow for 7 times as many map
8245 to be allocated (issue 524).
8247 Improved performance of code using closures.
8249 Improved performance of some binary operations involving doubles.
8252 2009-12-16: Version 2.0.4
8254 Added ECMAScript 5 Object.create.
8256 Improved performance of Math.max and Math.min.
8258 Optimized adding of strings on 64-bit platforms.
8260 Improved handling of external strings by using a separate table
8261 instead of weak handles. This improves garbage collection
8262 performance and uses less memory.
8264 Changed code generation for object and array literals in toplevel
8265 code to be more compact by doing more work in the runtime.
8267 Fixed a crash bug triggered when garbage collection happened during
8268 generation of a callback load inline cache stub.
8270 Fixed crash bug sometimes triggered when local variables shadowed
8271 parameters in functions that used the arguments object.
8274 2009-12-03: Version 2.0.3
8276 Optimized handling and adding of strings, for-in and Array.join.
8278 Heap serialization is now non-destructive.
8280 Improved profiler support with information on time spend in C++
8281 callbacks registered through the API.
8283 Added commands to the debugger protocol for starting/stopping
8286 Enabled the non-optimizing compiler for top-level code.
8288 Changed the API to only allow strings to be set as data objects on
8289 Contexts and scripts to avoid potentially keeping global objects
8290 around for too long (issue 528).
8292 OpenBSD support patch by Peter Valchev <pvalchev@gmail.com>.
8297 2009-11-24: Version 2.0.2
8299 Improved profiler support.
8301 Fixed bug that broke compilation of d8 with readline support.
8304 2009-11-20: Version 2.0.1
8306 Fixed crash bug in String.prototype.replace.
8308 Reverted a change which caused Chromium interactive ui test
8312 2009-11-18: Version 2.0.0
8314 Added support for VFP on ARM.
8316 Added TryCatch::ReThrow method to the API.
8318 Reduced the size of snapshots and improved the snapshot load time.
8320 Improved heap profiler support.
8322 64-bit version now supported on Windows.
8324 Fixed a number of debugger issues.
8329 2009-10-29: Version 1.3.18
8331 Reverted a change which caused crashes in RegExp replace.
8333 Reverted a change which caused Chromium ui_tests failure.
8336 2009-10-28: Version 1.3.17
8338 Added API method to get simple heap statistics.
8340 Improved heap profiler support.
8342 Fixed the implementation of the resource constraint API so it
8343 works when using snapshots.
8345 Fixed a number of issues in the Windows 64-bit version.
8347 Optimized calls to API getters.
8349 Added valgrind notification on code modification to the 64-bit version.
8351 Fixed issue where we logged shared library addresses on Windows at
8352 startup and never used them.
8355 2009-10-16: Version 1.3.16
8357 X64: Convert smis to holding 32 bits of payload.
8359 Introduced v8::Integer::NewFromUnsigned method.
8361 Added missing null check in Context::GetCurrent.
8363 Added trim, trimLeft and trimRight methods to String
8364 Patch by Jan de Mooij <jandemooij@gmail.com>
8366 Implement ES5 Array.isArray
8367 Patch by Jan de Mooij <jandemooij@gmail.com>
8369 Skip access checks for hidden properties.
8371 Added String::Concat(Handle<String> left, Handle<String> right) to the
8374 Fixed GYP-based builds of V8.
8377 2009-10-07: Version 1.3.15
8379 Expanded the maximum size of the code space to 512MB for 64-bit mode.
8381 Fixed a crash bug happening when starting profiling (issue
8382 http://crbug.com/23768).
8385 2009-10-07: Version 1.3.14
8387 Added GetRealNamedProperty to the API to lookup real properties
8388 located on the object or in the prototype chain skipping any
8391 Fixed the stack limits setting API to work correctly with threads. The
8392 stack limit now needs to be set to each thread thich is used with V8.
8394 Removed the high-priority flag from IdleNotification()
8396 Ensure V8 is initialized before locking and unlocking threads.
8398 Implemented a new JavaScript minifier for compressing the source of
8399 the built-in JavaScript. This removes non-Open Source code from Douglas
8400 Crockford from the project.
8402 Added a missing optimization in StringCharAt.
8404 Fixed some flaky socket tests.
8406 Change by Alexander Botero-Lowry to fix profiler sampling on FreeBSD
8409 Fixed memory leaks in the thread management code.
8411 Fixed the result of assignment to a pixel array. The assigned value
8414 Error reporting for invalid left-hand sides in for-in statements, pre-
8415 and postfix count expressions, and assignments now matches the JSC
8416 behavior in Safari 4.
8418 Follow the spec in disallowing function declarations without a name.
8420 Always allocate code objects within a 2 GB range. On x64 architecture
8421 this is used to use near calls (32-bit displacement) in Code objects.
8423 Optimized array construction ported to x64 and ARM architectures.
8425 [ES5] Changed Object.keys to return strings for element indices.
8428 2009-09-23: Version 1.3.13
8430 Fixed uninitialized memory problem.
8432 Improved heap profiler support.
8435 2009-09-22: Version 1.3.12
8437 Changed behavior of |function|.toString() on built-in functions to
8438 be compatible with other implementations. Patch by Jan de Mooij.
8440 Added Object::IsDirty in the API.
8442 Optimized array construction; it is now handled purely in native
8445 [ES5] Made properties of the arguments array enumerable.
8447 [ES5] Added test suite adapter for the es5conform test suite.
8449 [ES5] Added Object.keys function.
8452 2009-09-15: Version 1.3.11
8454 Fixed crash in error reporting during bootstrapping.
8456 Optimized generated IA32 math code by using SSE2 instructions when
8459 Implemented missing pieces of debugger infrastructure on ARM. The
8460 debugger is now fully functional on ARM.
8462 Made 'hidden' the default visibility for gcc.
8465 2009-09-09: Version 1.3.10
8467 Fixed profiler on Mac in 64-bit mode.
8469 Optimized creation of objects from simple constructor functions on
8472 Fixed a number of debugger issues.
8474 Reduced the amount of memory consumed by V8.
8477 2009-09-02: Version 1.3.9
8479 Optimized stack guard checks on ARM.
8481 Optimized API operations by inlining more in the API.
8483 Optimized creation of objects from simple constructor functions.
8485 Enabled a number of missing optimizations in the 64-bit port.
8487 Implemented native-code support for regular expressions on ARM.
8489 Stopped using the 'sahf' instruction on 64-bit machines that do
8492 Fixed a bug in the support for forceful termination of JavaScript
8496 2009-08-26: Version 1.3.8
8498 Changed the handling of idle notifications to allow idle
8499 notifications when V8 has not yet been initialized.
8501 Fixed ARM simulator compilation problem on Windows.
8504 2009-08-25: Version 1.3.7
8506 Reduced the size of generated code on ARM platforms by reducing
8507 the size of constant pools.
8509 Changed build files to not include the 'ENV' user environment
8510 variable in the build environment.
8512 Changed the handling of idle notifications.
8515 2009-08-21: Version 1.3.6
8517 Added support for forceful termination of JavaScript execution.
8519 Added low memory notification to the API. The embedding host can signal
8520 a low memory situation to V8.
8522 Changed the handling of global handles (persistent handles in the API
8523 sense) to avoid issues regarding allocation of new global handles
8524 during weak handle callbacks.
8526 Changed the growth policy of the young space.
8528 Fixed a GC issue introduced in version 1.3.5.
8531 2009-08-19: Version 1.3.5
8533 Optimized initialization of some arrays in the builtins.
8535 Fixed mac-nm script to support filenames with spaces.
8537 Support for using the V8 profiler when V8 is embedded in a Windows DLL.
8539 Changed typeof RegExp from 'object' to 'function' for compatibility.
8540 Fixed bug where regexps were not callable across contexts.
8542 Added context independent script compilation to the API.
8544 Added API call to get the stack trace for an exception.
8546 Added API for getting object mirrors.
8548 Made sure that SSE3 instructions are used whenever possible even when
8549 running off a snapshot generated without using SSE3 instructions.
8551 Tweaked the handling of the initial size and growth policy of the heap.
8553 Added native code generation for RegExp to 64-bit version.
8555 Added JavaScript debugger support to 64-bit version.
8558 2009-08-13: Version 1.3.4
8560 Added a readline() command to the d8 shell.
8562 Fixed bug in json parsing.
8564 Added idle notification to the API and reduced memory on idle
8568 2009-08-12: Version 1.3.3
8570 Fixed issue 417: incorrect %t placeholder expansion.
8572 Added .gitignore file similar to Chromium's one.
8574 Fixed SConstruct file to build with new logging code for Android.
8576 API: added function to find instance of template in prototype
8577 chain. Inlined Object::IsInstanceOf.
8579 Land change to notify valgrind when we modify code on x86.
8581 Added api call to determine whether a string can be externalized.
8583 Added a write() command to d8.
8586 2009-08-05: Version 1.3.2
8588 Started new compiler infrastructure for two-pass compilation using a
8589 control flow graph constructed from the AST.
8591 Profiler stack sampling for X64.
8593 Safe handling of NaN to Posix platform-dependent time functions.
8595 Added a new profiler control API to unify controlling various aspects
8601 2009-07-30: Version 1.3.1
8603 Speed improvements to accessors and interceptors.
8605 Added support for capturing stack information on custom errors.
8607 Added support for morphing an object into a pixel array where its
8608 indexed properties are stored in an external byte array. Values written
8609 are always clamped to the 0..255 interval.
8611 Profiler on x64 now handles C/C++ functions from shared libraries.
8613 Changed the debugger to avoid stepping into function.call/apply if the
8614 function is a built-in.
8616 Initial implementation of constructor heap profile for JS objects.
8618 More fine grained control of profiling aspects through the API.
8620 Optimized the called as constructor check for API calls.
8623 2009-07-27: Version 1.3.0
8625 Allowed RegExp objects to be called as functions (issue 132).
8627 Fixed issue where global property cells would escape after
8628 detaching the global object; see http://crbug.com/16276.
8630 Added support for stepping into setters and getters in the
8633 Changed the debugger to avoid stopping in its own JavaScript code
8634 and in the code of built-in functions.
8636 Fixed issue 345 by avoiding duplicate escaping labels.
8638 Fixed ARM code generator crash in short-circuited boolean
8639 expressions and added regression tests.
8641 Added an external allocation limit to avoid issues where small V8
8642 objects would hold on to large amounts of external memory without
8643 causing garbage collections.
8645 Finished more of the inline caching stubs for x64 targets.
8648 2009-07-13: Version 1.2.14
8650 Added separate paged heap space for global property cells and
8651 avoid updating the write barrier when storing into them.
8653 Improved peep-hole optimization on ARM platforms by not emitting
8654 unnecessary debug information.
8656 Re-enabled ICs for loads and calls that skip a global object
8657 during lookup through the prototype chain.
8659 Allowed access through global proxies to use ICs.
8664 2009-07-09: Version 1.2.13
8666 Fixed issue 397, issue 398, and issue 399.
8668 Added support for breakpoint groups.
8670 Fixed bugs introduced with the new global object representation.
8672 Fixed a few bugs in the ARM code generator.
8675 2009-07-06: Version 1.2.12
8677 Added stack traces collection to Error objects accessible through
8678 the e.stack property.
8680 Changed RegExp parser to use a recursive data structure instead of
8681 stack-based recursion.
8683 Optimized Date object construction and string concatenation.
8685 Improved performance of div, mod, and mul on ARM platforms.
8688 2009-07-02: Version 1.2.11
8690 Improved performance on IA-32 and ARM.
8692 Fixed profiler sampler implementation on Mac OS X.
8694 Changed the representation of global objects to improve
8695 performance of adding a lot of new properties.
8698 2009-06-29: Version 1.2.10
8700 Improved debugger support.
8702 Fixed bug in exception message reporting (issue 390).
8704 Improved overall performance.
8707 2009-06-23: Version 1.2.9
8709 Improved math performance on ARM.
8711 Fixed profiler name-inference bug.
8713 Fixed handling of shared libraries in the profiler tick processor
8716 Fixed handling of tests that time out in the test scripts.
8718 Fixed compilation on MacOS X version 10.4.
8720 Fixed two bugs in the regular expression engine.
8722 Fixed a bug in the string type inference.
8724 Fixed a bug in the handling of 'constant function' properties.
8726 Improved overall performance.
8729 2009-06-16: Version 1.2.8
8731 Optimized math on ARM platforms.
8733 Fixed two crash bugs in the handling of getters and setters.
8735 Improved the debugger support by adding scope chain information.
8737 Improved the profiler support by compressing log data transmitted
8740 Improved overall performance.
8743 2009-06-08: Version 1.2.7
8745 Improved debugger and profiler support.
8747 Reduced compilation time by improving the handling of deferred
8750 Optimized interceptor accesses where the property is on the object
8751 on which the interceptors is attached.
8753 Fixed compilation problem on GCC 4.4 by changing the stack
8754 alignment to 16 bytes.
8756 Fixed handle creation to follow stric aliasing rules.
8758 Fixed compilation on FreeBSD.
8760 Introduced API for forcing the deletion of a property ignoring
8761 interceptors and attributes.
8764 2009-05-29: Version 1.2.6
8766 Added a histogram recording hit rates at different levels of the
8769 Added stack overflow check for the RegExp analysis phase. Previously a
8770 very long regexp graph could overflow the stack with recursive calls.
8772 Use a dynamic buffer when collecting log events in memory.
8774 Added start/stop events to the profiler log.
8776 Fixed infinite loop which could happen when setting a debug break while
8777 executing a RegExp compiled to native code.
8779 Fixed handling of lastIndexOf called with negative index (issue 351).
8781 Fixed irregular crash in profiler test (issue 358).
8783 Fixed compilation issues with some versions of gcc.
8786 2009-05-26: Version 1.2.5
8788 Fixed bug in initial boundary check for Boyer-Moore text
8791 Fixed compilation issues with MinGW and gcc 4.3+ and added support
8792 for armv7 and cortex-a8 architectures. Patches by Lei Zhang and
8795 Added a script cache to the debugger.
8797 Optimized compilation performance by improving internal data
8798 structures and avoiding expensive property load optimizations for
8799 code that's infrequently executed.
8801 Exposed the calling JavaScript context through the static API
8802 function Context::GetCalling().
8805 2009-05-18: Version 1.2.4
8807 Improved performance of floating point number allocation for ARM
8810 Fixed crash when using the instanceof operator on functions with
8811 number values in their prototype chain (issue 341).
8813 Optimized virtual frame operations in the code generator to speed
8814 up compilation time and allocated the frames in the zone.
8816 Made the representation of virtual frames and jump targets in the
8817 code generator much more compact.
8819 Avoided linear search for non-locals in scope code when resolving
8820 variables inside with and eval scopes.
8822 Optimized lexical scanner by dealing with whitespace as part of
8823 the token scanning instead of as a separate step before it.
8825 Changed the scavenging collector so that promoted objects do not
8826 reside in the old generation while their remembered set is being
8827 swept for pointers into the young generation.
8829 Fixed numeric overflow handling when compiling count operations.
8832 2009-05-11: Version 1.2.3
8834 Fixed bug in reporting of out-of-memory situations.
8836 Introduced hidden prototypes on certain builtin prototype objects
8837 such as String.prototype to emulate JSC's behavior of restoring
8838 the original function when deleting functions from those prototype
8841 Fixed crash bug in the register allocator.
8844 2009-05-04: Version 1.2.2
8846 Fixed bug in array sorting for sparse arrays (issue 326).
8848 Added support for adding a soname when building a shared library
8849 on Linux (issue 151).
8851 Fixed bug caused by morphing internal ASCII strings to external
8852 two-byte strings. Slices over ASCII strings have to forward ASCII
8853 checks to the underlying buffer string.
8855 Allowed API call-as-function handlers to be called as
8858 Fixed a crash bug where an external string was disposed but a
8859 slice of the external string survived as a symbol.
8862 2009-04-27: Version 1.2.1
8864 Added EcmaScript 5 JSON object.
8866 Fixed bug in preemption support on ARM.
8869 2009-04-23: Version 1.2.0
8871 Optimized floating-point operations on ARM.
8873 Added a number of extensions to the debugger API.
8875 Changed the enumeration order for unsigned integer keys to always
8878 Added a "read" extension to the shell sample.
8880 Added support for Array.prototype.reduce and
8881 Array.prototype.reduceRight.
8883 Added an option to the SCons build to control Microsoft Visual C++
8884 link-time code generation.
8886 Fixed a number of bugs (in particular issue 315, issue 316,
8887 issue 317 and issue 318).
8890 2009-04-15: Version 1.1.10
8892 Fixed crash bug that occurred when loading a const variable in the
8895 Allowed using with and eval in registered extensions in debug mode
8896 by fixing bogus assert.
8898 Fixed the source position for function returns to enable the
8899 debugger to break there.
8902 2009-04-14: Version 1.1.9
8904 Made the stack traversal code in the profiler robust by avoiding
8905 to look into the heap.
8907 Added name inferencing for anonymous functions to facilitate
8908 debugging and profiling.
8910 Re-enabled stats timers in the developer shell (d8).
8912 Fixed issue 303 by avoiding to shortcut cons-symbols.
8915 2009-04-11: Version 1.1.8
8917 Changed test-debug/ThreadedDebugging to be non-flaky (issue 96).
8919 Fixed step-in handling for Function.prototype.apply and call in
8920 the debugger (issue 269).
8922 Fixed v8::Object::DeleteHiddenValue to not bail out when there
8923 are no hidden properties.
8925 Added workaround for crash bug, where external symbol table
8926 entries with deleted resources would lead to NPEs when looking
8927 up in the symbol table.
8930 2009-04-07: Version 1.1.7
8932 Added support for easily importing additional environment
8933 variables into the SCons build.
8935 Optimized strict equality checks.
8937 Fixed crash in indexed setters on objects without a corresponding
8940 Re-enabled script compilation cache.
8943 2009-04-01: Version 1.1.6
8945 Reverted an unsafe code generator change.
8948 2009-04-01: Version 1.1.5
8950 Fixed bug that caused function literals to not be optimized as
8951 much as other functions.
8953 Improved profiler support.
8955 Fixed a crash bug in connection with debugger unloading.
8957 Fixed a crash bug in the code generator caused by losing the
8958 information that a frame element was copied.
8960 Fixed an exception propagation bug that could cause non-null
8961 return values when exceptions were thrown.
8964 2009-03-30: Version 1.1.4
8966 Optimized String.prototype.match.
8968 Improved the stack information in profiles.
8970 Fixed bug in ARM port making it possible to compile the runtime
8971 system for thumb mode again.
8973 Implemented a number of optimizations in the code generator.
8975 Fixed a number of memory leaks in tests.
8977 Fixed crash bug in connection with script source code and external
8981 2009-03-24: Version 1.1.3
8983 Fixed assertion failures in compilation of loop conditions.
8985 Removed STL dependency from developer shell (d8).
8987 Added infrastructure for protecting the V8 heap from corruption
8988 caused by memory modifications from the outside.
8991 2009-03-24: Version 1.1.2
8993 Improved frame merge code generated by the code generator.
8995 Optimized String.prototype.replace.
8997 Implemented __defineGetter__ and __defineSetter__ for properties
8998 with integer keys on non-array objects.
9000 Improved debugger and profiler support.
9002 Fixed a number of portability issues to allow compilation for
9003 smaller ARM devices.
9005 Exposed object cloning through the API.
9007 Implemented hidden properties. This is used to expose an identity
9008 hash for objects through the API.
9010 Implemented restarting of regular expressions if their input
9011 string changes representation during preemption.
9013 Fixed a code generator bug that could cause assignments in loops
9014 to be ignored if using continue to break out of the loop (issue
9018 2009-03-12: Version 1.1.1
9020 Fixed an assertion in the new compiler to take stack overflow
9021 exceptions into account.
9023 Removed exception propagation code that could cause crashes.
9025 Fixed minor bug in debugger line number computations.
9027 8-byte align the C stack on Linux and Windows to speed up floating
9031 2009-03-12: Version 1.1.0
9033 Improved code generation infrastructure by doing simple register
9034 allocation and constant folding and propagation.
9036 Optimized regular expression matching by avoiding to create
9037 intermediate string arrays and by flattening nested array
9038 representations of RegExp data.
9040 Traverse a few stack frames when recording profiler samples to
9041 include partial call graphs in the profiling output.
9043 Added support for using OProfile to profile generated code.
9045 Added remote debugging support to the D8 developer shell.
9047 Optimized creation of nested literals like JSON objects.
9049 Fixed a bug in garbage collecting unused maps and turned it on by
9050 default (--collect-maps).
9052 Added support for running tests under Valgrind.
9055 2009-02-27: Version 1.0.3
9057 Optimized double-to-integer conversions in bit operations by using
9058 SSE3 instructions if available.
9060 Optimized initialization sequences that store to multiple
9061 properties of the same object.
9063 Changed the D8 debugger frontend to use JSON messages.
9065 Force garbage collections when disposing contexts.
9067 Align code objects at 32-byte boundaries.
9070 2009-02-25: Version 1.0.2
9072 Improved profiling support by performing simple call stack
9073 sampling for ticks and by fixing a bug in the logging of code
9076 Fixed a number of debugger issues.
9078 Optimized code that uses eval.
9080 Fixed a couple of bugs in the regular expression engine.
9082 Reduced the size of generated code for certain regular expressions.
9084 Removed JSCRE completely.
9086 Fixed issue where test could not be run if there was a dot in the
9090 2009-02-13: Version 1.0.1
9092 Fixed two crash-bugs in irregexp (issue 231 and 233).
9094 Fixed a number of minor bugs (issue 87, 227 and 228).
9096 Added support for morphing strings to external strings on demand
9097 to avoid having to create copies in the embedding code.
9099 Removed experimental support for external symbol callbacks.
9102 2009-02-09: Version 1.0.0
9104 Fixed crash-bug in the code generation for case independent 16 bit
9107 Made shells more robust in the presence of string conversion
9108 failures (issue 224).
9110 Fixed a potential infinite loop when attempting to resolve
9113 Miscellaneous fixes to the new regular expression engine.
9115 Reduced binary by stripping unneeded text from JavaScript library and
9116 minifying some JavaScript files.
9119 2009-01-27: Version 0.4.9
9121 Enabled new regular expression engine.
9123 Made a number of changes to the debugger protocol.
9125 Fixed a number of bugs in the preemption support.
9127 Added -p option to the developer shell to run files in parallel
9130 Fixed a number of minor bugs (including issues 176, 187, 189, 192,
9133 Fixed a number of bugs in the serialization/deserialization
9134 support for the ARM platform.
9137 2009-01-19: Version 0.4.8.1
9139 Minor patch to debugger support.
9142 2009-01-16: Version 0.4.8
9144 Fixed string length bug on ARM (issue 171).
9146 Made most methods in the API const.
9148 Optimized object literals by improving data locality.
9150 Fixed bug that caused incomplete functions to be cached in case of
9151 stack overflow exceptions.
9153 Fixed bugs that caused catch variables and variables introduced by
9154 eval to behave incorrectly when using accessors (issues 186, 190
9158 2009-01-06: Version 0.4.7
9160 Minor bugfixes and optimizations.
9162 Added command line debugger to D8 shell.
9164 Fixed subtle bug that caused the wrong 'this' to be used when
9165 calling a caught function in a catch clause.
9167 Inline array loads within loops directly in the code instead of
9168 always calling a stub.
9171 2008-12-11: Version 0.4.6
9173 Fixed exception reporting bug where certain exceptions were
9174 incorrectly reported as uncaught.
9176 Improved the memory allocation strategy used during compilation to
9177 make running out of memory when compiling huge scripts less
9180 Optimized String.replace by avoiding the construction of certain
9183 Fixed bug in code generation for large switch statements on ARM.
9185 Fixed bug that caused V8 to change the global object template
9186 passed in by the user.
9188 Changed the API for creating object groups used during garbage
9189 collection. Entire object groups are now passed to V8 instead of
9190 individual members of the groups.
9193 2008-12-03: Version 0.4.5
9195 Added experimental API support for allocating V8 symbols as
9198 Fixed bugs in debugging support on ARM.
9200 Changed eval implementation to correctly detect whether or not a
9201 call to eval is aliased.
9203 Fixed bug caused by a combination of the compilation cache and
9204 dictionary probing in native code. The bug caused us to sometimes
9205 call functions that had not yet been compiled.
9207 Added platform support for FreeBSD.
9209 Added support for building V8 on Windows with either the shared or
9210 static version of MSVCRT
9212 Added the v8::jscre namespace around the jscre functions to avoid
9213 link errors (duplicate symbols) when building Google Chrome.
9215 Added support for calling a JavaScript function with the current
9216 debugger execution context as its argument to the debugger
9219 Changed the type of names of counters from wchar_t to char.
9221 Changed the Windows system call used to compute daylight savings
9222 time. The system call that we used to use became four times
9223 slower on WinXP SP3.
9225 Added support in the d8 developer shell for memory-mapped counters
9226 and added a stats-viewer tool.
9228 Fixed bug in upper/lower case mappings (issue 149).
9231 2008-11-17: Version 0.4.4
9233 Reduced code size by using shorter instruction encoding when
9236 Added a --help option to the shell sample and to the d8 shell.
9238 Added visual studio project files for building the ARM simulator.
9240 Fixed a number of ARM simulator issues.
9242 Fixed bug in out-of-memory handling on ARM.
9244 Implemented shell support for passing arguments to a script from
9247 Fixed bug in date code that made certain date functions return -0
9248 instead of 0 for dates before the epoch.
9250 Restricted applications of eval so it can only be used in the
9251 context of the associated global object.
9253 Treat byte-order marks as whitespace characters.
9256 2008-11-04: Version 0.4.3
9258 Added support for API accessors that prohibit overwriting by
9259 accessors defined in JavaScript code by using __defineGetter__ and
9262 Improved handling of conditionals in test status files.
9264 Introduced access control in propertyIsEnumerable.
9266 Improved performance of some string operations by caching
9267 information about the type of the string between operations.
9269 Fixed bug in fast-case code for switch statements that only have
9273 2008-10-30: Version 0.4.2
9275 Improved performance of Array.prototype.concat by moving the
9276 implementation to C++ (issue 123).
9278 Fixed heap growth policy to avoid growing old space to its maximum
9279 capacity before doing a garbage collection and fixed issue that
9280 would lead to artificial out of memory situations (issue 129).
9282 Fixed Date.prototype.toLocaleDateString to return the date in the
9283 same format as WebKit.
9285 Added missing initialization checks to debugger API.
9287 Added removing of unused maps during GC.
9290 2008-10-28: Version 0.4.1
9292 Added caching of RegExp data in compilation cache.
9294 Added Visual Studio project file for d8 shell.
9296 Fixed function call performance regression introduced in version
9297 0.4.0 when splitting the global object in two parts (issue 120).
9299 Fixed issue 131 by checking for empty handles before throwing and
9300 reporting exceptions.
9303 2008-10-23: Version 0.4.0
9305 Split the global object into two parts: The state holding global
9306 object and the global object proxy.
9308 Fixed bug that affected the value of an assignment to an element
9309 in certain cases (issue 116).
9311 Added GetPropertyNames functionality (issue 33) and extra Date
9312 functions (issue 77) to the API.
9314 Changed WeakReferenceCallback to take a Persistent<Value> instead
9315 of a Persistent<Object> (issue 101).
9317 Fixed issues with message reporting for exceptions in try-finally
9318 blocks (issues 73 and 75).
9320 Optimized flattening of strings and string equality checking.
9322 Improved Boyer-Moore implementation for faster indexOf operations.
9324 Added development shell (d8) which includes counters and
9327 Fixed problem with the receiver passed to functions called from
9331 2008-10-16: Version 0.3.5
9333 Improved string hash-code distribution by excluding bit-field bits
9336 Changed string search algorithm used in indexOf from KMP to
9339 Improved the generated code for the instanceof operator.
9341 Improved performance of slow-case string equality checks by
9342 specializing the code based on the string representation.
9344 Improve the handling of out-of-memory situations (issue 70).
9346 Improved performance of strict equality checks.
9348 Improved profiler output to make it easier to see anonymous
9351 Improved performance of slow-case keyed loads.
9353 Improved property access performance by allocating a number of
9354 properties in the front object.
9356 Changed the toString behavior on the built-in object constructors
9357 to print [native code] instead of the actual source. Some web
9358 applications do not like constructors with complex toString
9362 2008-10-06: Version 0.3.4
9364 Changed Array.prototype.sort to use quick sort.
9366 Fixed code generation issue where leaving a finally block with
9367 break or continue would accumulate elements on the expression
9370 Made sure that the name accessor on functions returns the expected
9371 names for builtin JavaScript functions and C++ callback functions.
9373 Added fast case code for extending the property storage array of
9376 Ported switch statement optimizations introduced in version 0.3.3
9377 to the ARM code generator.
9379 Allowed GCC to use strict-aliasing rules when compiling.
9381 Improved performance of arguments object allocation by taking care
9382 of arguments adaptor frames in the generated code.
9384 Updated the V8 benchmark suite to version 2.
9387 2008-09-25: Version 0.3.3
9389 Improved handling of relocation information to enable more
9390 peep-hole optimizations.
9392 Optimized switch statements where all labels are constant small
9395 Optimized String.prototype.indexOf for common cases.
9397 Fixed more build issues (issue 80).
9399 Fixed a couple of profiler issues.
9401 Fixed bug where the body of a function created using the Function
9402 constructor was not allowed to end with a single-line comment
9405 Improved handling of object literals by canonicalizing object
9406 literal maps. This will allow JSON objects with the same set of
9407 properties to share the same map making inline caching work better
9411 2008-09-17: Version 0.3.2
9413 Generalized the EvalCache into a CompilationCache and enabled it
9414 for scripts too. The current strategy is to retire all entries
9415 whenever a mark-sweep collection is started.
9417 Fixed bug where switch statements containing only a default case
9418 would lead to an unbalanced stack (issue 69).
9420 Fixed bug that made access to the function in a named function
9421 expression impossible in certain situations (issue 24).
9423 Fixed even more build issues.
9425 Optimized calling conventions on ARM. The conventions on ARM and
9428 Removed static initializers for flags and counters.
9430 Improved inline caching behavior for uncommon cases where lazily
9431 loading Date and RegExp code could force certain code paths go
9434 Removed arguments adaption for builtins written in C++. This
9435 makes Array.prototype.push and Array.prototype.pop slightly
9439 2008-09-11: Version 0.3.1
9441 Fixed a number of build issues.
9443 Fixed problem with missing I-cache flusing on ARM.
9445 Changed space layout in memory management by splitting up
9446 code space into old data space and code space.
9448 Added utf-8 conversion support to the API (issue 57).
9450 Optimized repeated calls to eval with the same strings. These
9451 repeated calls are common in web applications.
9453 Added Xcode project file.
9455 Optimized a couple of Array operation.
9457 Fixed parser bug by checking for end-of-string when parsing break
9458 and continue (issue 35).
9460 Fixed problem where asian characters were not categorized as
9463 Fixed bug that disallowed calling functions fetched from an array
9464 using a string as an array index (issue 32).
9466 Fixed bug where the internal field count on object templates were
9467 sometimes ignored (issue 54).
9469 Added -f option to the shell sample for compatibility with other
9472 Added source info to TryCatches in the API.
9474 Fixed problem where the seed for the random number generator was
9475 clipped in a double to unsigned int conversion.
9477 Fixed bug where cons string symbols were sometimes converted to
9478 non-symbol flat strings during GC.
9480 Fixed bug in error reporting when attempting to convert null to an
9484 2008-09-04: Version 0.3.0
9486 Added support for running tests on the ARM simulator.
9488 Fixed bug in the 'in' operator where negative indices were not
9491 Fixed build issues on gcc-4.3.1.
9493 Changed Date.prototype.toLocaleTimeString to not print the
9494 timezone part of the time.
9496 Renamed debug.h to v8-debug.h to reduce the risk of name conflicts
9500 2008-09-02: Version 0.2.5
9502 Renamed the top level directory 'public' to 'include'.
9504 Added 'env' option to the SCons build scripts to support
9505 overriding the ENV part of the build environment. This is mostly
9506 to support Windows builds in cases where SCons cannot find the
9507 correct paths to the Windows SDK, as these paths cannot be passed
9508 through shell environment variables.
9510 Enabled "Buffer Security Check" on for the Windows SCons build and
9511 added the linker option /OPT:ICF as an optimization.
9513 Added the V8 benchmark suite to the repository.
9516 2008-09-01: Version 0.2.4
9518 Included mjsunit JavaScript test suite and C++ unit tests.
9520 Changed the shell sample to not print the result of executing a
9521 script provided on the command line.
9523 Fixed issue when building samples on Windows using a shared V8
9524 library. Added visibility option on Linux build which makes the
9525 generated library 18% smaller.
9527 Changed build system to accept multiple build modes in one build
9528 and generate separate objects, libraries and executables for each
9531 Removed deferred negation optimization (a * -b => -(a * b)) since
9532 this visibly changes operand conversion order.
9534 Improved parsing performance by introducing stack guard in
9535 preparsing. Without a stack guard preparsing always bails out
9536 with stack overflow.
9538 Changed shell sample to take flags directly from the command-line.
9539 Added API call that implements this.
9541 Added load, quit and version functions to the shell sample so it's
9542 easier to run benchmarks and tests.
9544 Fixed issue with building samples and cctests on 64-bit machines.
9546 Fixed bug in the runtime system where the prototype chain was not
9547 always searched for a setter when setting a property that does not
9551 2008-08-14: Version 0.2.3
9553 Improved performance of garbage collection by moving the
9554 function that updates pointers during compacting collection
9555 into the updating visitor. This gives the compiler a better
9556 chance to inline and avoid a function call per (potential)
9559 Extended the shell sample with a --runtime-flags option.
9561 Added Visual Studio project files for the shell.cc and
9565 2008-08-13: Version 0.2.2
9567 Improved performance of garbage collection by changing the way
9568 we use the marking stack in the event of stack overflow during
9569 full garbage collection and by changing the way we mark roots.
9571 Cleaned up ARM version by removing top of stack caching and by
9572 introducing push/pop elimination.
9574 Cleaned up the way runtime functions are called to allow
9575 runtime calls with no arguments.
9577 Changed Windows build options to make sure that exceptions are
9578 disabled and that optimization flags are enabled.
9580 Added first version of Visual Studio project files.
9583 2008-08-06: Version 0.2.1
9585 Improved performance of unary addition by avoiding runtime calls.
9587 Fixed the handling of '>' and '<=' to use right-to-left conversion
9588 and left-to-right evaluation as specified by ECMA-262.
9590 Fixed a branch elimination bug on the ARM platform where incorrect
9591 code was generated because of overly aggressive branch
9594 Improved performance of code that repeatedly assigns the same
9595 function to the same property of different objects with the same
9598 Untangled DEBUG and ENABLE_DISASSEMBLER defines. The disassembler
9599 no longer expects DEBUG to be defined.
9601 Added platform-nullos.cc to serve as the basis for new platform
9605 2008-07-30: Version 0.2.0
9607 Changed all text files to have native svn:eol-style.
9609 Added a few samples and support for building them. The samples
9610 include a simple shell that can be used to benchmark and test V8.
9612 Changed V8::GetVersion to return the version as a string.
9614 Added source for lazily loaded scripts to snapshots and made
9615 serialization non-destructive.
9617 Improved ARM support by fixing the write barrier code to use
9618 aligned loads and stores and by removing premature locals
9619 optimization that relied on broken support for callee-saved
9620 registers (removed).
9622 Refactored the code for marking live objects during garbage
9623 collection and the code for allocating objects in paged
9624 spaces. Introduced an abstraction for the map word of a heap-
9625 allocated object and changed the memory allocator to allocate
9626 executable memory only for spaces that may contain code objects.
9628 Moved StringBuilder to utils.h and ScopedLock to platform.h, where
9629 they can be used by debugging and logging modules. Added
9630 thread-safe message queues for dealing with debugger events.
9632 Fixed the source code reported by toString for certain builtin
9633 empty functions and made sure that the prototype property of a
9634 function is enumerable.
9636 Improved performance of converting values to condition flags in
9639 Merged disassembler-{arch} files.
9642 2008-07-28: Version 0.1.4
9644 Added support for storing JavaScript stack traces in a stack
9645 allocated buffer to make it visible in shallow core dumps.
9646 Controlled by the --preallocate-message-memory flag which is
9647 disabled by default.
9650 2008-07-25: Version 0.1.3
9652 Fixed bug in JSObject::GetPropertyAttributePostInterceptor where
9653 map transitions would count as properties.
9655 Allowed aliased eval invocations by treating them as evals in the
9656 global context. This may change in the future.
9658 Added support for accessing the last entered context through the
9659 API and renamed Context::Current to Context::GetCurrent and
9660 Context::GetSecurityContext to Context::GetCurrentSecurityContext.
9662 Fixed bug in the debugger that would cause the debugger scripts to
9663 be recursively loaded and changed all disabling of interrupts to
9664 be block-structured.
9666 Made snapshot data read-only to allow it to be more easily shared
9667 across multiple users of V8 when linked as a shared library.
9670 2008-07-16: Version 0.1.2
9672 Fixed building on Mac OS X by recognizing i386 and friends as
9675 Added propagation of stack overflow exceptions that occur while
9676 compiling nested functions.
9678 Improved debugger with support for recursive break points and
9679 handling of exceptions that occur in the debugger JavaScript code.
9681 Renamed GetInternal to GetInternalField and SetInternal to
9682 SetInternalField in the API and moved InternalFieldCount and
9683 SetInternalFieldCount from FunctionTemplate to ObjectTemplate.
9686 2008-07-09: Version 0.1.1
9688 Fixed bug in stack overflow check code for IA-32 targets where a
9689 non-tagged value in register eax was pushed to the stack.
9691 Fixed potential quadratic behavior when converting strings to
9694 Fixed bug where the return value from Object::SetProperty could
9695 end up being the property holder instead of the written value.
9697 Improved debugger support by allowing nested break points and by
9698 dealing with stack-overflows when compiling functions before
9699 setting break points in them.
9702 2008-07-03: Version 0.1.0