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ChangeLog
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2012-04-13: Version 3.10.2
Fixed native ARM build (issues 1744, 539)
Return LOOKUP variable instead of CONTEXT for non-context allocated
outer scope parameters (Chromium issue 119609).
Fixed regular and ElementsKind transitions interfering with each other
(Chromium issue 122271).
Improved performance of keyed loads/stores which have a HeapNumber
index (issues 1388, 1295).
Fixed WeakMap processing for evacuation candidates (issue 2060).
Bailout on possible direct eval calls (Chromium issue 122681).
Do not assume that names of function expressions are context-allocated
(issue 2051).
Performance and stability improvements on all platforms.
2012-04-10: Version 3.10.1
Fixed bug with arguments object in inlined functions (issue 2045).
Fixed performance bug with lazy initialization (Chromium issue
118686).
Added suppport for Mac OS X 64bit builds with GYP.
(Patch contributed by Filipe David Manana <[email protected]>)
Fixed bug with hidden properties (issue 2034).
Fixed a performance bug when reloading pages (Chromium issue 117767,
V8 issue 1902).
Fixed bug when optimizing throw in top-level code (issue 2054).
Fixed two bugs with array literals (issue 2055, Chromium issue 121407).
Fixed bug with Math.min/Math.max with NaN inputs (issue 2056).
Fixed a bug with the new runtime profiler (Chromium issue 121147).
Fixed compilation of V8 using uClibc.
Optimized boot-up memory use.
Optimized regular expressions.
2012-03-30: Version 3.10.0
Fixed store IC writability check in strict mode
(Chromium issue 120099).
Resynchronize timers if the Windows system time was changed.
(Chromium issue 119815)
Removed "-mfloat-abi=hard" from host compiler cflags when building for
hardfp ARM
(https://code.google.com/p/chrome-os-partner/issues/detail?id=8539)
Fixed edge case for case independent regexp character classes
(issue 2032).
Reset function info counters after context disposal.
(Chromium issue 117767, V8 issue 1902)
Fixed missing write barrier in CopyObjectToObjectElements.
(Chromium issue 119926)
Fixed missing bounds check in HasElementImpl.
(Chromium issue 119925)
Performance and stability improvements on all platforms.
2012-03-23: Version 3.9.24
Activated count-based profiler for ARM.
Fixed use of proxies as f.prototype properties. (issue 2021)
Enabled snapshots on MIPS.
Performance and stability improvements on all platforms.
2012-03-21: Version 3.9.23
Use correct arguments adaptation environment when inlining function
containing arguments. (Issue 2014)
Performance and stability improvements on all platforms.
2012-03-20: Version 3.9.22
Enabled count-based profiler by default.
Implemented a hash based look-up to speed up address checks
in large object space (issue 853).
Performance and stability improvements on all platforms.
2012-03-19: Version 3.9.21
Fixed push-to-trunk script (and re-push).
Added API call that identifies strings that are guaranteed only to
contain ASCII characters.
2012-03-19: Version 3.9.20
Fixed declarations escaping global strict eval. (Issue 1624)
Fixed wrapping of receiver for non-strict callbacks. (Issue 1973)
Fixed function declarations overwriting read-only global properties.
(Chromium issue 115452)
Fixed --use-strict flag in combination with --harmony[-scoping].
Debugger: naive implementation of "step into Function.prototype.bind".
Debugger: added ability to set script source from within OnBeforeCompile
Added flag to always call DebugBreak on abort.
Re-enabled constructor inlining and inline === comparison with boolean
constants. (Issue 2009)
Don't use an explicit s0 in ClampDoubleToUint8. (Issue 2004)
Performance and stability improvements on all platforms.
2012-03-14: Version 3.9.19
Ensure there is a smi check of the receiver for global load and call
ICs (Chromium issue 117794).
Performance and stability improvements on all platforms.
2012-03-13: Version 3.9.18
Ensure consistency of Math.sqrt on Intel platforms.
Remove static initializers in v8. (issue 1859)
Add explicit dependency on v8_base in the GYP-based build.
Performance and stability improvements on all platforms.
2012-03-12: Version 3.9.17
Fixed VFP detection through compiler defines. (issue 1996)
Add Code-related fields to postmortem metadata.
Performance and stability improvements on all platforms.
2012-03-09: Version 3.9.16
Added basic interface inference for modules (behind the --harmony flag).
Added Object.is, Number.isFinite, Number.isNaN.
Updated the Unicode tables to Unicode version 6.1.0.
Performance and stability improvements on all platforms.
2012-03-06: Version 3.9.15
Fix the heap profiler crash caused by memory layout changes between
passes.
Fix Error.prototype.toString to throw TypeError. (issue 1980)
Fix double-rounding in strtod for MinGW. (issue 1062)
Fix corrupted snapshot serializaton on ia32. (Chromium issue v8/1985)
Performance and stability improvements on all platforms.
2012-03-01: Version 3.9.14
Performance and stability improvements on all platforms.
2012-02-29: Version 3.9.13
Added code kind check before preparing for OSR. (issue 1900, 115073)
Fixed issue 1802: Pass zone explicitly to zone-allocation on x64 and
ARM.
Ported string construct stub to x64. (issue 849)
Performance and stability improvements on all platforms.
2012-02-28: Version 3.9.12
Fixed the negative lookup stub to handle deleted entries in a
dictionary. (issue 1964)
Added a new API where the host can supply a callback function. The
callback function can resolve the location of a return address on stack
to the location where a return-address rewriting profiler stashed the
original return address.
Fixed Chromium issue http://crbug.com/115646: When compiling for-in
pass correct context value to the increment instruction.
Fixed issue 1853: Update breakpoints set with partial file name after
compile.
2012-02-27: Version 3.9.11
Made 'module' a context-sensitive keyword (V8 issue 1957).
2012-02-24: Version 3.9.10
Fixed V8 issues 1322, 1772 and 1969.
Conformance improvements.
Performance and stability improvements on all platforms.
2012-02-23: Version 3.9.9
Supported fast case for-in in Crankshaft.
Sped up heap snapshot serialization and dominators construction.
Randomized allocation addresses on windows. (Chromium issue 115151)
Fixed compilation with MinGW-w64. (issue 1943)
Fixed incorrect value of assignments to non-extensible properties.
Fixed a crash bug in generated code on ia32.
Performance and stability improvements on all platforms.
2012-02-21: Version 3.9.8
Fixed memory leak and missing #include in StartupDataDecompressor
(issue 1960).
Renamed static methods to avoid shadowing virtual methods and fix Clang
C++11 compile error.
Fixed sequence of element access in array builtins (issue 1790).
Performance and stability improvements on all platforms.
2012-02-16: Version 3.9.7
Fixed V8 issues 1322, 1878, 1942, 1945 and Chromium issue 113924.
Fixed GCC-4.7 warnings.
Added Navier-Stokes benchmark.
Performance and stability improvements on all platforms.
2012-02-14: Version 3.9.6
Fixed template-related linker error. (issue 1936)
Allowed inlining of functions containing object literals. (issue 1322)
Added --call-graph-size option to tickprocessor. (issue 1937)
Heap Snapshot maximum size limit is too low for really big apps. At the
moment the limit is 256MB. (Chromium issue 113015)
Performance and stability improvements on all platforms.
2012-02-09: Version 3.9.5
Removed unused command line flags.
Performance and stability improvements on all platforms.
2012-02-08: Version 3.9.4
Properly initialize element-transitioning array literals on ARM.
(issue 1930)
Bug fixes on all platforms.
2012-02-07: Version 3.9.3
When rethrowing an exception, print the stack trace of its original
site instead of rethrow site (Chromium issue 60240).
Increased size of small stacks from 32k to 64k to avoid hitting limits
in Chromium (Chromium issue 112843).
2012-02-06: Version 3.9.2
Added timestamp to --trace-gc output. (issue 1932)
Heap profiler reports implicit references.
Optionally export metadata with libv8 to enable debuggers to inspect V8
state.
2012-02-02: Version 3.9.1
Fixed memory leak in NativeObjectsExplorer::FindOrAddGroupInfo
(Chromium issue 112315).
Fixed a crash in dev tools (Chromium issue 107996).
Added 'dependencies_traverse': 1 to v8 GYP target.
Performance and stability improvements on all platforms.
2012-02-01: Version 3.9.0
Reduced memory use immediately after starting V8.
Stability fixes and performance improvements on all platforms.
2012-01-26: Version 3.8.9
Flush number string cache on GC (issue 1605).
Provide access to function inferred name with
v8::Function::GetInferredName in V8 public API.
Fix building with Clang (issue 1912).
Reduce the space used by the stack for the profiling thread.
Fix misleading documentation of v8::Locker (issue 542).
Introduce readbinary function in d8 to read binary files.
Performance and stability improvements on all platforms.
2012-01-23: Version 3.8.8
Limited number of loop iterations in Heap::ReserveSpace
(Chromium issue 99027).
Fixed solaris build (VirtualMemory) (issue 1761).
Fixed strict vs. non-strict handling of function proxies in
higher-order array and string methods.
Enabled asynchronous remote debugging with d8 (issue 1691).
Stability and performance improvements on all platforms.
2012-01-19: Version 3.8.7
Ensure that LRandom restores rsi after call to the C function on x64.
(Chromium issue http://crbug.com/110509)
Fixing include issues on *bsd when building with scons.
(issue 1897)
Provide a switch to specify -fno-strict-aliasing
(issue 1887)
Move WIN32 define from standalone.gypi to common.gypi
(issue 1760)
Fix corner-case in heap size estimation.
(issue 1893)
Fix and enable NEW_NON_STRICT_FAST ArgumentsAccess stub on x64.
(issue 1903)
Performance improvements and bug fixes.
2012-01-16: Version 3.8.6
Add primitive WebGL array support to d8.
Improve heap size estimation (issue 1893).
Hash collision DOS workaround extended from string keys
to numeric keys.
Provide an API for iterating through all external strings referenced
from the JS heap.
Adjust position recorded for call expressions. http://crbug.com/109195
Fix GC crash related to instanceof. http://crbug.com/109448
Performance improvements and bug fixes.
2012-01-05: Version 3.8.5
Fix broken test that assumes that no GC can clear the regexp cache (GC
can happen at any time due to Crankshaft).
Fix handling of bogus receivers for Harmony collections. (issue 1884)
Add netbsd support to gyp build.
Determine page size at runtime on posix platforms.
Ensure that store buffer filtering hash sets are cleared after
StoreBuffer::Filter.
Randomize the seed used for string hashing. This helps guard against
CPU-eating DOS attacks against node.js servers. Based on code from
Bert Belder. This version only solves the issue for those that compile
V8 themselves or those that do not use snapshots. A snapshot-based
precompiled V8 will still have predictable string hash codes.
Implement callback when script finishes running in V8 API.
Improve performance of Math.min and Math.max for the case of two
arguments. (issue 1325)
2012-01-02: Version 3.8.4
Performance improvements for large Smi-only arrays.
Fixed InternalArrays construction. (issue 1878)
2011-12-27: Version 3.8.3
Avoid embedding new space objects into code objects in the lithium gap
resolver. (chromium:108296)
Bug fixes and performance optimizations on all platforms.
2011-12-21: Version 3.8.2
Add max optimization flag to v8 gyp build to ensure V8 is always built
fully optimized in Chrome.
MIPS: Bring MIPS to parity with other platforms.
Optimizations and stability improvements on all platforms.
2011-12-19: Version 3.8.1
Fixed GCC 4.7 warnings. Patch from Tobias Burnus.
Stability improvements on all platforms.
2011-12-13: Version 3.8.0
Fixed handling of arrays in DefineOwnProperty. (issue 1756)
Sync parser and preparser on do-while and return statements.
(issue 1856)
Fixed another corner case for DefineOwnProperty on arrays (issue 1756).
Stability and performance improvements on all platforms.
2011-12-01: Version 3.7.12
Increase tick interval for the android platform.
Fix a bug in the register allocator. (chromium:105112)
Fix handling of recompiling code. (chromium:105375, v8:1782)
Start incremental marking on idle notification. (v8:1458)
Build fixes for various platforms.
Various performance improvements.
2011-11-29: Version 3.7.11
Fixed bug when generating padding to ensure space for lazy
deoptimization.
(issue 1846)
Further reduced pause times due to GC.
Stability and performance improvements on all platforms.
2011-11-23: Version 3.7.10
Set maximum length of FixedArray in terms of elements instead an
absolute number of bytes.
(Chromium issue 103103)
Stability and performance improvements on all platforms.
2011-11-21: Version 3.7.9
Removed exit-time destructors.
Stability and performance improvements on all platforms.
2011-11-17: Version 3.7.8
Removed hidden prototype from builtins, i.e., deleting an overridden
function on builtins will not make the original function reappear.
Added NetBSD support for scons build.
Performance improvements on all platforms.
2011-11-14: Version 3.7.7
Fix missing fast property accessors in heap snapshots.
(issue 1818)
2011-11-11: Version 3.7.6
Fixed filtering of store buffer for large object pages.
(issue 1817)
Fixed generated hash function on all platforms.
(issue 1808)
Fixed Heap::Shrink to ensure that it does not free pages that are
still in use.
(Chromium issue 100414)
Stability and performance improvements on all platforms.
2011-11-10: Version 3.7.5
Added initial gyp infrastructure for MIPS.
Implemented performance improvements to the incremental garbage
collector.
Added optimizations and stability improvements on all platforms.
2011-11-07: Version 3.7.4
Proper "libv8.so.3.7.4" SONAME for Linux shared library (issue 1786).
Fix Harmony sets and maps to allow null and undefined as keys
(still hidden behind --harmony flag) (issue 1622).
Implement VirtualMemory on FreeBSD to fix build (issue 1807).
Enable VFP instructions for Android.
Fix error handling in Date.prototype.toISOString (issue 1792).
Bug fixes and performance improvements for all platforms.
Not officially supported but noteworthy: Crankshaft for MIPS :-)
2011-10-28: Version 3.7.3
Slight deoptimization as a workaround for issue with jslint: Issue
1789.
2011-10-27: Version 3.7.2
Fix bug in deoptimization. Known issue with jslint: Issue 1789.
2011-10-26: Version 3.7.1
Achieved 33% speedup in debug-mode tests.
Removed special casing of calls to RegExp test and exec methods with no
argument. Now matches new JSC behaviour. crbug.com/75740.
Return the empty string on cyclic references in toString (ES5
conformance).
Fixed bug triggered by JSBeautifier. crbug.com/100409.
Made Math.random state per-context instead of per-process (issue 864).
Fixed stack traces to skip native functions.
Make snapshots (new contexts) smaller and faster.
Fixed handling of Function.apply for non-array arguments.
Fixed evaluation order in defineProperties to match FireFox.
Fixed handling of non-object receivers for array builtins,
crbug.com/100702.
Multiple fixes to improve compliance with test262.
Fixed compatibility with older Android releases.
Fixed compilation with gcc-4.5.3.
Improved performance of WriteUtf8, issue 1665.
Made native syntax an early error in the preparser.
Fixed issues 793 and 893 relating to Function.prototype.bind.
Improved let, const, Set and Map support and other Harmony features
(behind the --harmony flag).
Changed evaluation order for > and <= to match ES5 instead of ES3.
Bug fixes and performance improvements on all platforms.
2011-10-13: Version 3.7.0
Fixed array handling for Object.defineOwnProperty (ES5 conformance).
Fixed issue 1757 (string slices of external strings).
Fixed issue 1759 (ARM).
Added flag --noclever-optimizations to disable some things that
caused trouble in the past.
Added flag --stress-compaction for testing.
Added flag --harmony to activate all experimental Harmony features.
2011-10-10: Version 3.6.6
Added a GC pause visualization tool.
Added presubmit=no and werror=no flags to Makefile.
ES5/Test262 conformance improvements.
Fixed compilation issues with GCC 4.5.x (issue 1743).
Bug fixes and performance improvements on all platforms.
2011-10-05: Version 3.6.5
New incremental garbage collector.
Removed the hard heap size limit (soft heap size limit is still
700/1400Mbytes by default).
Implemented ES5 generic Array.prototype.toString (Issue 1361).
V8 now allows surrogate pair codes in decodeURIComponent (Issue 1415).
Fixed x64 RegExp start-of-string bug (Issues 1746, 1748).
Fixed propertyIsEnumerable for numeric properties (Issue 1692).
Fixed the MinGW and Windows 2000 builds.
Fixed "Prototype chain is not searched if named property handler does
not set a property" (Issue 1636).
Made the RegExp.prototype object be a RegExp object (Issue 1217).
Disallowed future reserved words as labels in strict mode.
Fixed string split to correctly coerce the separator to a string
(Issue 1711).
API: Added an optional source length field to the Extension
constructor.
API: Added Debug::DisableAgent to match existing Debug::EnableAgent
(Issue 1573).
Added "native" target to Makefile for the benefit of Linux distros.
Fixed: debugger stops stepping outside evaluate (Issue 1639).
More work on ES-Harmony proxies. Still hidden behind a flag.
Bug fixes and performance improvements on all platforms.
2011-09-15: Version 3.6.4
Fixed d8's broken readline history.
Removed the need for code delete events in CPU profiler (Issue 1466).
Fixed debugger stepping next with trycatch recursion (Issue 1639).
Fixing parallel execution in d8 (with -p) and some memory leaks.
Support for precise stepping in functions compiled before debugging was
started (step 1).
2011-09-13: Version 3.6.3
Implemented better support of typed arrays in the d8 shell.
Bug fixes and performance improvements on all platforms.
2011-09-08: Version 3.6.2
Added "dependencies" target to top-level Makefile.
Added ability to turn profiler on/off in d8.
Added "soname_version" parameter to common.gypi, v8.gyp, and Makefile.
Fixed several crash bugs.
2011-09-07: Version 3.6.1
Fixed a bug in abrupt exit from with or catch inside finally.
Fixed possible crash in FixedDoubleArray::Initialize() (Chromium
issue 95113).
Fixed a bug in Page::GetRegionMaskForSpan (Chromium issue 94425).
Fixed a few clang warnings (which -Werror treated as errors).
Performance improvements on all platforms.
2011-09-05: Version 3.6.0
Fixed a bug when optimizing named function expression (issue 1647).
Fixed a bug when optimizing f.call.apply (issue 1650).
Made arguments and caller always be null on native functions
(issues 1548 and 1643).
Fixed issue 1648 (cross-compiling x64 targeting ia32).
Fixed issue 371 (d8 printing of strings containing \0).
Fixed order of evaluation in arguments to parseInt (issue 1649).
Fixed a problem with large heap snapshots in Chrome DevTools
(issue 1658, chromium issue 89268).
Upped default maximum heap size from 512M to 700M.
2011-08-31: Version 3.5.10
Added dependency of v8_base on WinSocket2 Windows library in
the GYP-build.
Various bugfixes.
2011-08-29: Version 3.5.9
Made FromPropertyDescriptor not trigger inherited setters.
Fixed .gyp files to work on the ARM simulator.
Fixed shared library build warnings for MSVS.
2011-08-24: Version 3.5.8
Added V8EXPORT attributes for v8::Array::CheckCast and
v8::Number::CheckCast.
Made a slight API change enabling opting out from null termination
in String::Write*().
Fixed arm build for gcc-4.6.
2011-08-22: Version 3.5.7
Make scanner handle invalid unicode escapes in identifiers correctly.
Make regexp flag parsing stricter.
Fix several memory leaks.
2011-08-17: Version 3.5.6
Fixed issue that could cause crashes when running with --heap-stats.
Fixed compilation on Linux 2.6.9 and older.
Fixed live-object-list to work with isolates.
Fixed memory leaks in zones and isolates.
Fixed a performance regression for TypedArrays on x64.
Stability improvements on all platforms.
2011-08-15: Version 3.5.5
Fixed bugs involving negative zero and the optimizing compiler.
Fixed optimized version of Function.apply(x, arguments). (issue 1592)
Eliminated uses of deprecated ARM instructions.
Sped up Math.floor by using SSE 4.1 roundsd instruction on ia32.
Removed restriction on the size of disassembled code that is printed.
2011-08-10: Version 3.5.4
Added a preliminary implementation of ES Harmony weak maps. Weak
maps can be enabled by the flag --harmony-weakmaps.
Introduced a toplevel Makefile to support GYP-based building. GYP
can be obtained from http://gyp.googlecode.com.
Fixed a bug in the length property of functions created by
Function.prototype.bind.
Reduced malloc heap allocation on process startup.
Several important code generation bug fixes.
Performance improvements on all platforms.
2011-08-03: Version 3.5.3
MIPS: Port of fix to ClassOf check from ARM.
Patch from Paul Lind <[email protected]>.
Stopped using mprotect on Cygwin.
Avoided uninitialized member warning on gcc 4.3.4
Both patches by Bert Belder.
Bug fixes and performance improvements on all platforms.
2011-08-01: Version 3.5.2
Performance improvements on all platforms.
2011-07-28: Version 3.5.1
Fixed setting the readonly flag on the prototype property using the
API call FunctionTemplate::SetPrototypeAttributes (issue 1539).
Changed the tools/test.py script to use d8 instead of shell for
testing.
Fixed crash in ToBooleanStub when GC happens during invocation.
Enabled automatic unboxing of double arrays.
Performance improvements on all platforms.
2011-07-25: Version 3.5.0
Implemented Object.prototype.{hasOwnProperty, propertyIsEnumerable} for
proxies.
Removed logging to memory support.
Bugfixes and performance work.
2011-07-20: Version 3.4.14
Fix the debugger for strict-mode functions. (Chromium issue 89236)
Add GetPropertyAttribute method for Object in the API. (Patch by
Peter Varga)
Fix -Wunused-but-set-variable for gcc-4.6 on x64. (Issue 1291)
2011-07-18: Version 3.4.13
Improved debugger support to allow inspection of optimized frames (issue
1140).
Fixed a bug in prototype transitions cache clearing introduced by r8165.
Fixed shortcutting bug in HInferRepresentation. Patch by Andy Wingo.
Fixed a memory leak in sample/shell.cc (dispose semaphores).
Simplified HClampToUint8. Patch by Andy Wingo.
Exposed APIs for detecting boxed primitives, native errors. Patch by
Luke Zarko.
Added map check for COW elements to crankshaft array handling code
(issue 1560).
Sample shell and (a light version of) D8 links against a shared library
now.
Fixed bug in array filter and reduce functions (issue 1559).
Avoid TLS load in AstNode constructor.
Introduced a random entropy source which can optionally be provided at
initialization. (Chromium issue 89462).
2011-07-13: Version 3.4.12
Added --prof profiling option to d8 shell.
Fixed a bug where reading a directory in d8 shell hangs (issue 1533).
Fixed a potential assertion failure in const declarations.
Fixed an assertion failure in descriptor arrays (issue 1526).
Enabled fast thread-local storage by default on supported platforms.
Improved reporting of source position for global variable loads
(issue 1527).
2011-07-11: Version 3.4.11
Fixed MinGW32 build.
Fixed a GC bug with RegExp code flushing.
Implemented Object.defineProperty for proxies.
Fixed a bug in for/in iteration of arguments objects (issue 1531).
Added debugger support for inspecting optimized frames (issue 1140).
Allowed JSObject::PreventExtensions to work for arguments objects.
Bugfixes and performance work.
2011-07-06: Version 3.4.10
Fixed debugger not breaking on certain "if" statements (issue 1523).
Fixed assertion failure in runtime profiler when running on IA32
without snapshot (issue 1522).
Fixed ABI for API calls on IA32 (for clang compatibility).
Introduced code flushing of RegExp code to free memory used by
RegExps sooner.