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ChangeLog
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2015-05-17: Sentinel
The ChangeLog file is no longer maintained on bleeding_edge. This
sentinel should stay on top of this list.
2015-05-17: Version 4.5.2
Performance and stability improvements on all platforms.
2015-05-16: Version 4.5.1
Test that TypedArray methods don't read length (issue 3578).
Implement %TypedArray%.{fill,find,findIndex} (issue 3578).
TypedArray.prototype.copyWithin method (issue 3578).
Provide accessor for object internal properties that doesn't require
debugger to be active (Chromium issue 481845).
Don't create debug context if debug listener is not set (Chromium issue
482290).
Performance and stability improvements on all platforms.
2015-05-13: Version 4.4.65
Deprecate Isolate::New.
Factor out core of Array.forEach and .every, for use in TypedArrays
(issue 3578).
Performance and stability improvements on all platforms.
2015-05-12: Version 4.4.64
Performance and stability improvements on all platforms.
2015-05-11: Version 4.4.63
Let Runtime_GrowArrayElements accept non-Smi numbers as |key| (Chromium
issue 485410).
Make one copy for all TypedArray methods (issue 4085).
Performance and stability improvements on all platforms.
2015-05-09: Version 4.4.62
[turbofan] Fix handling of OsrLoopEntry in ControlReducer::ConnectNTL()
(Chromium issue 485908).
Performance and stability improvements on all platforms.
2015-05-08: Version 4.4.61
Performance and stability improvements on all platforms.
2015-05-08: Version 4.4.60
Performance and stability improvements on all platforms.
2015-05-08: Version 4.4.59
Performance and stability improvements on all platforms.
2015-05-07: Version 4.4.58
TypedArray.prototype.every method (issue 3578).
[V8] Reland https://codereview.chromium.org/1121833003/ (Chromium issue
480652).
Performance and stability improvements on all platforms.
2015-05-07: Version 4.4.57
Performance and stability improvements on all platforms.
2015-05-06: Version 4.4.56
Shard v8_base.lib on Windows to avoid 2G .lib limit (Chromium issue
485155).
Implement a 'trial parse' step, that will abort pre-parsing excessively
long and trivial functions, so that they can be eagerly compiled after
all. This essentially allows the parser to renege on its earlier
decision to lazy-parse, if additional information suggests it was a bad
decision (Chromium issue 470930).
Performance and stability improvements on all platforms.
2015-05-06: Version 4.4.55
Handle the case when derived constructor is [[Call]]ed with 0 args
(Chromium issue 474783).
freed_nodes in global-handles should be addititive (Chromium issues
479796, 484671).
[V8] Reland https://codereview.chromium.org/1100993003/ (Chromium issue
480652).
[es6] When comparing two symbols we may need to throw a TypeError (issue
4073).
Performance and stability improvements on all platforms.
2015-05-06: Version 4.4.54
Performance and stability improvements on all platforms.
2015-05-05: Version 4.4.53
Performance and stability improvements on all platforms.
2015-05-05: Version 4.4.52
Performance and stability improvements on all platforms.
2015-05-04: Version 4.4.51
Performance and stability improvements on all platforms.
2015-05-04: Version 4.4.50
Performance and stability improvements on all platforms.
2015-05-01: Version 4.4.49
Performance and stability improvements on all platforms.
2015-05-01: Version 4.4.48
[V8] Use previous token location as EOS token location (Chromium issue
480652).
Implement kToBeExecutedOnceCodeAge (Chromium issue 470930).
Performance and stability improvements on all platforms.
2015-04-30: Version 4.4.47
Performance and stability improvements on all platforms.
2015-04-30: Version 4.4.46
Performance and stability improvements on all platforms.
2015-04-29: Version 4.4.45
Performance and stability improvements on all platforms.
2015-04-29: Version 4.4.44
Pass ArrayBuffer::Allocator via Isolate::CreateParams.
Fix unobservable constructor replacement on prototype maps (Chromium
issue 478522).
Performance and stability improvements on all platforms.
2015-04-29: Version 4.4.43
Performance and stability improvements on all platforms.
2015-04-28: Version 4.4.42
MIPS: Fix FP load/store with large offsets from base register (Chromium
issue 481519).
Extending v8::GetHeapStatistics to return total available size (Chromium
issue 476013).
Performance and stability improvements on all platforms.
2015-04-28: Version 4.4.41
Performance and stability improvements on all platforms.
2015-04-28: Version 4.4.40
Do more to avoid last-resort stop-the-world GC (Chromium issue 481433).
Performance and stability improvements on all platforms.
2015-04-27: Version 4.4.39
Performance and stability improvements on all platforms.
2015-04-27: Version 4.4.38
Performance and stability improvements on all platforms.
2015-04-25: Version 4.4.37
Performance and stability improvements on all platforms.
2015-04-24: Version 4.4.36
Performance and stability improvements on all platforms.
2015-04-24: Version 4.4.35
Performance and stability improvements on all platforms.
2015-04-24: Version 4.4.34
Performance and stability improvements on all platforms.
2015-04-23: Version 4.4.33
Performance and stability improvements on all platforms.
2015-04-23: Version 4.4.32
Performance and stability improvements on all platforms.
2015-04-23: Version 4.4.31
Performance and stability improvements on all platforms.
2015-04-22: Version 4.4.30
Performance and stability improvements on all platforms.
2015-04-22: Version 4.4.29
Performance and stability improvements on all platforms.
2015-04-21: Version 4.4.28
Performance and stability improvements on all platforms.
2015-04-21: Version 4.4.27
Performance and stability improvements on all platforms.
2015-04-20: Version 4.4.26
Allow for accessing an ArrayBuffer contents without externalizing it.
Remove support for externally backed elements from the API (issue 3996).
Deprecate 3-args ResourceConstraints::ConfigureDefaults.
Indicate that low-memory-notificatin triggered GCs are "forced".
Adding missing V8_EXPORT flag in SpaceStatistics class in v8.h (Chromium
issues 466141, 476013).
Performance and stability improvements on all platforms.
2015-04-20: Version 4.4.25
Turn off SupportsFlexibleFloorAndRound for Arm64 due to a bug (Chromium
issue 476477).
Adding V8 api to get memory statistics of spaces in V8::Heap (Chromium
issues 466141, 476013).
Performance and stability improvements on all platforms.
2015-04-17: Version 4.4.24
Performance and stability improvements on all platforms.
2015-04-17: Version 4.4.23
Don't crash when reporting an access check failure for a detached global
proxy (Chromium issue 475884).
Use smaller heap growing factor in idle notification to start
incremental marking when there is idle time >16ms (Chromium issue
477323).
Performance and stability improvements on all platforms.
2015-04-16: Version 4.4.22
Reduce regexp compiler stack size when not optimizing regexps (Chromium
issue 475705).
Performance and stability improvements on all platforms.
2015-04-15: Version 4.4.21
Remove support for specifying the number of available threads.
When converting Maybe and MaybeLocal values with a check, always check.
Performance and stability improvements on all platforms.
2015-04-15: Version 4.4.20
Performance and stability improvements on all platforms.
2015-04-15: Version 4.4.19
Reland "Remove support for thread-based recompilation" (issue 3608).
Performance and stability improvements on all platforms.
2015-04-14: Version 4.4.18
Reland "Remove support for thread-based recompilation" (issue 3608).
Performance and stability improvements on all platforms.
2015-04-14: Version 4.4.17
Performance and stability improvements on all platforms.
2015-04-13: Version 4.4.16
Expose ArrayBufferView::HasBuffer (issue 3996).
Performance and stability improvements on all platforms.
2015-04-13: Version 4.4.15
Performance and stability improvements on all platforms.
2015-04-12: Version 4.4.14
Performance and stability improvements on all platforms.
2015-04-12: Version 4.4.13
Performance and stability improvements on all platforms.
2015-04-10: Version 4.4.12
Performance and stability improvements on all platforms.
2015-04-10: Version 4.4.11
Performance and stability improvements on all platforms.
2015-04-10: Version 4.4.10
Don't #define snprintf in VS2015 - it's illegal and unneeded (Chromium
issue 440500).
Performance and stability improvements on all platforms.
2015-04-09: Version 4.4.9
Performance and stability improvements on all platforms.
2015-04-09: Version 4.4.8
Performance and stability improvements on all platforms.
2015-04-08: Version 4.4.7
Make GetDebugContext a bit more robust (Chromium issue 474538).
Performance and stability improvements on all platforms.
2015-04-08: Version 4.4.6
Performance and stability improvements on all platforms.
2015-04-08: Version 4.4.5
More robust when allocation fails during compaction (Chromium issue
473307).
MIPS: JSEntryTrampoline: check for stack space before pushing arguments
(Chromium issue 469768).
Performance and stability improvements on all platforms.
2015-04-07: Version 4.4.4
Debugger: remove debug command API.
Remove support for thread-based recompilation (issue 3608).
JSEntryTrampoline: check for stack space before pushing arguments
(Chromium issue 469768).
Performance and stability improvements on all platforms.
2015-04-07: Version 4.4.3
Performance and stability improvements on all platforms.
2015-04-06: Version 4.4.2
Performance and stability improvements on all platforms.
2015-04-06: Version 4.4.1
Support for typed arrays added to Heap::RightTrimFixedArray() (Chromium
issue 472513).
Expose an API on ArrayBufferView to copy out content w/o changing the
buffer (issue 3996).
Performance and stability improvements on all platforms.
2015-04-02: Version 4.3.66
Reland: Fix JSON parser Handle leak (previous CL 1041483004) (issue
3976, Chromium issue 472504).
Turn off overapproximation of the weak closure again (issue 3862).
Performance and stability improvements on all platforms.
2015-04-01: Version 4.3.65
Performance and stability improvements on all platforms.
2015-04-01: Version 4.3.64
Performance and stability improvements on all platforms.
2015-04-01: Version 4.3.63
[V8] Don't ignore sourceURL comment in inline scripts in .stack (issue
3920).
Deprecate IdleNotification().
Remove --harmony-numeric-literal flag.
Performance and stability improvements on all platforms.
2015-03-31: Version 4.3.62
Put newspace evacuation in an EvacuationScope (Chromium issue 471554).
Fix libdl dependency on Android and remove librt hack (Chromium issue
469973).
Ensure that GC idle notifications either make progress or stop
requesting more GCs (Chromium issue 470615).
Layout descriptor must be trimmed when corresponding descriptors array
is trimmed to stay in sync (Chromium issue 470804).
Fix JSON parser Handle leak (issue 3976).
Performance and stability improvements on all platforms.
2015-03-30: Version 4.3.61
Performance and stability improvements on all platforms.
2015-03-28: Version 4.3.60
Reland^2 "Filter invalid slots out from the SlotsBuffer after marking."
(Chromium issues 454297, 470801).
This fixes missing incremental write barrier issue when double fields
unboxing is enabled (Chromium issue 469146).
Performance and stability improvements on all platforms.
2015-03-27: Version 4.3.59
Use a slot that is located on a heap page when removing invalid entries
from the SlotsBuffer (Chromium issue 470801).
Performance and stability improvements on all platforms.
2015-03-26: Version 4.3.58
Return timestamp of the last recorded interval to the caller of
HeapProfiler::GetHeapStats (Chromium issue 467222).
Performance and stability improvements on all platforms.
2015-03-26: Version 4.3.57
Reland [V8] Removed SourceLocationRestrict (Chromium issue 468781).
Performance and stability improvements on all platforms.
2015-03-25: Version 4.3.56
Remove v8::Isolate::ClearInterrupt.
Performance and stability improvements on all platforms.
2015-03-25: Version 4.3.55
Performance and stability improvements on all platforms.
2015-03-24: Version 4.3.54
Do not assign positions to parser-generated desugarings (Chromium issue
468661).
Performance and stability improvements on all platforms.
2015-03-24: Version 4.3.53
Filter invalid slots out from the SlotsBuffer after marking (Chromium
issue 454297).
Fix OOM bug 3976 (issue 3976).
Performance and stability improvements on all platforms.
2015-03-24: Version 4.3.52
Remove calls to IdleNotification().
Save heap object tracking data in heap snapshot (Chromium issue 467222).
Performance and stability improvements on all platforms.
2015-03-24: Version 4.3.51
[V8] Removed SourceLocationRestrict (Chromium issue 468781).
[turbofan] Fix control reducer bug with walking non-control edges during
ConnectNTL phase (Chromium issue 469605).
Performance and stability improvements on all platforms.
2015-03-23: Version 4.3.50
Performance and stability improvements on all platforms.
2015-03-23: Version 4.3.49
Ensure we don't overflow in BCE (Chromium issue 469148).
[turbofan] Fix lowering of Math.max for integral inputs (Chromium issue
468162).
Use libdl to get symbols for backtraces.
Performance and stability improvements on all platforms.
2015-03-19: Version 4.3.48
Clarify what APIs return Maybe and MaybeLocal values (issue 3929).
Introduce explicit constant for per Context debug data set by embedder
(Chromium issue 466631).
Adjust key behaviour for weak collections (issues 3970, 3971, Chromium
issue 460083).
Turn on overapproximation of the weak closure (issue 3862).
Performance and stability improvements on all platforms.
2015-03-18: Version 4.3.47
Performance and stability improvements on all platforms.
2015-03-17: Version 4.3.46
Performance and stability improvements on all platforms.
2015-03-17: Version 4.3.45
Performance and stability improvements on all platforms.
2015-03-17: Version 4.3.44
Performance and stability improvements on all platforms.
2015-03-16: Version 4.3.43
Bugfix in hydrogen GVN (Chromium issue 467481).
Remove obsolete TakeHeapSnapshot method from API (Chromium issue
465651).
Beautify syntax error for unterminated argument list (Chromium issue
339474).
Performance and stability improvements on all platforms.
2015-03-16: Version 4.3.42
Performance and stability improvements on all platforms.
2015-03-15: Version 4.3.41
Performance and stability improvements on all platforms.
2015-03-14: Version 4.3.40
Performance and stability improvements on all platforms.
2015-03-14: Version 4.3.39
Performance and stability improvements on all platforms.
2015-03-14: Version 4.3.38
Remove --harmony-scoping flag.
Performance and stability improvements on all platforms.
2015-03-13: Version 4.3.37
Implement TDZ in StoreIC for top-level lexicals (issue 3941).
Turn on job-based optimizing compiler (issue 3608).
Performance and stability improvements on all platforms.
2015-03-13: Version 4.3.36
Performance and stability improvements on all platforms.
2015-03-12: Version 4.3.35
Add Cast() for Int32 and Uint32 (Chromium issue 462402).
Incorrect handling of HTransitionElementsKind in hydrogen check
elimination phase fixed (Chromium issue 460917).
Performance and stability improvements on all platforms.
2015-03-12: Version 4.3.34
Performance and stability improvements on all platforms.
2015-03-12: Version 4.3.33
Fix the toolchain used to build the snapshots in GN (Chromium issues
395249, 465456).
Performance and stability improvements on all platforms.
2015-03-11: Version 4.3.32
Reland of Remove slots that point to unboxed doubles from the
StoreBuffer/SlotsBuffer (Chromium issues 454297, 465273).
Performance and stability improvements on all platforms.
2015-03-11: Version 4.3.31
Performance and stability improvements on all platforms.
2015-03-11: Version 4.3.30
Remove uid and title from HeapSnapshot (Chromium issue 465651).
Remove deprecated CpuProfiler methods.
[turbofan] Fix --turbo-osr for OSRing into inner loop inside for-in
(Chromium issue 462775).
Performance and stability improvements on all platforms.
2015-03-10: Version 4.3.29
Performance and stability improvements on all platforms.
2015-03-10: Version 4.3.28
Performance and stability improvements on all platforms.
2015-03-10: Version 4.3.27
Performance and stability improvements on all platforms.
2015-03-07: Version 4.3.26
Remove slots that point to unboxed doubles from the
StoreBuffer/SlotsBuffer (Chromium issue 454297).
Performance and stability improvements on all platforms.
2015-03-06: Version 4.3.25
Performance and stability improvements on all platforms.
2015-03-06: Version 4.3.24
convert more things to maybe (issue 3929).
Performance and stability improvements on all platforms.
2015-03-05: Version 4.3.23
[V8] Use Function.name for stack frames in v8::StackTrace (Chromium
issue 17356).
Allow passing sourceMapUrl when compiling scripts (Chromium issue
462572).
convert compile functions to use maybe (issue 3929).
Performance and stability improvements on all platforms.
2015-03-05: Version 4.3.22
give UniquePersistent full move semantics (issue 3669).
Performance and stability improvements on all platforms.
2015-03-05: Version 4.3.21
Performance and stability improvements on all platforms.
2015-03-04: Version 4.3.20
convert remaining object functions to maybes (issue 3929).
Performance and stability improvements on all platforms.
2015-03-04: Version 4.3.19
ARM assembler: fix undefined behaviour in fits_shifter (Chromium issues
444089, 463436).
Implement subclassing Arrays (issue 3930).
[es6] Fix for-const loops (issue 3983).
Performance and stability improvements on all platforms.
2015-03-04: Version 4.3.18
Implement subclassing Arrays (issue 3930).
Performance and stability improvements on all platforms.
2015-03-04: Version 4.3.17
Implement subclassing Arrays (issue 3930).
convert more object functions to return maybes (issue 3929).
Performance and stability improvements on all platforms.
2015-03-03: Version 4.3.16
check for null context on execution entry (issue 3929).
convert object::* to return maybe values (issue 3929).
Removed funky Maybe constructor and made fields private (issue 3929).
Polish Maybe API a bit, removing useless creativity and fixing some
signatures (issue 3929).
Performance and stability improvements on all platforms.
2015-03-02: Version 4.3.15
Performance and stability improvements on all platforms.
2015-03-02: Version 4.3.14
Performance and stability improvements on all platforms.
2015-02-28: Version 4.3.13
Disallow subclassing Arrays (issue 3930).
Performance and stability improvements on all platforms.
2015-02-28: Version 4.3.12
Performance and stability improvements on all platforms.
2015-02-27: Version 4.3.11
Disallow subclassing Arrays (issue 3930).
convert Value::*Value() function to return Maybe results (issue 3929).
Performance and stability improvements on all platforms.
2015-02-27: Version 4.3.10
Convert v8::Value::To* to use MaybeLocal (issue 3929).
Performance and stability improvements on all platforms.
2015-02-26: Version 4.3.9
Add public version macros (issue 3075).
Performance and stability improvements on all platforms.
2015-02-26: Version 4.3.8
Performance and stability improvements on all platforms.
2015-02-25: Version 4.3.7
Performance and stability improvements on all platforms.
2015-02-25: Version 4.3.6
Performance and stability improvements on all platforms.
2015-02-25: Version 4.3.5
Turn on job based recompilation (issue 3608).
Performance and stability improvements on all platforms.
2015-02-24: Version 4.3.4
Reland "Correctly propagate terminate exception in TryCall." (issue
3892).
Performance and stability improvements on all platforms.
2015-02-24: Version 4.3.3
Performance and stability improvements on all platforms.
2015-02-24: Version 4.3.2
Update GN build files with the cpu_arch -> current_cpu change.
Performance and stability improvements on all platforms.
2015-02-23: Version 4.3.1
Limit size of first page based on serialized data (Chromium issue
453111).
Performance and stability improvements on all platforms.
2015-02-19: Version 4.2.77
Make generator constructors configurable (issue 3902).
Performance and stability improvements on all platforms.
2015-02-19: Version 4.2.76
Performance and stability improvements on all platforms.
2015-02-18: Version 4.2.75
Performance and stability improvements on all platforms.
2015-02-18: Version 4.2.74
Correctly propagate terminate exception in TryCall (issue 3892).
Performance and stability improvements on all platforms.
2015-02-17: Version 4.2.73
Performance and stability improvements on all platforms.
2015-02-17: Version 4.2.72
[turbofan] Fix control reducer with re-reducing branches (Chromium issue
458876).