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2012-02-09: Version 3.9.5

        Removed unused command line flags.

        Performance and stability improvements on all platforms.


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2012-02-08: Version 3.9.4

        Properly initialize element-transitioning array literals on ARM.
        (issue 1930)

        Bug fixes on all platforms.


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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).


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2012-02-06: Version 3.9.2

        Add timestamp to --trace-gc output. (issue 1932)

        Heap profiler reports implicit references.

        Optionally export metadata with libv8 to enable debuggers to inspect V8
        state.


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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.


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2012-02-01: Version 3.9.0

        Reduce memory use immediately after starting V8.

        Stability fixes and performance improvements on all platforms.


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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.


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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.


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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.


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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.


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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)


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2012-01-02: Version 3.8.4

        Performance improvements for large Smi-only arrays.

        Fixed InternalArrays construction. (issue 1878)


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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.


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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.


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2011-12-19: Version 3.8.1

        Fixed GCC 4.7 warnings. Patch from Tobias Burnus.

        Stability improvements on all platforms.


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2011-12-13: Version 3.8.0
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        Fixed handling of arrays in DefineOwnProperty. (issue 1756)

        Sync parser and preparser on do-while and return statements. 
        (issue 1856)

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        Fixed another corner case for DefineOwnProperty on arrays (issue 1756).

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        Stability and performance improvements on all platforms.


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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.


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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.


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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.


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2011-11-21: Version 3.7.9

        Removed exit-time destructors.

        Stability and performance improvements on all platforms.


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2011-11-17: Version 3.7.8

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        Removed hidden prototype from builtins, i.e., deleting an overridden
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        function on builtins will not make the original function reappear.

        Added NetBSD support for scons build.

        Performance improvements on all platforms.


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2011-11-14: Version 3.7.7

        Fix missing fast property accessors in heap snapshots.
        (issue 1818)


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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)

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        Stability and performance improvements on all platforms.
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2011-11-10: Version 3.7.5

        Added initial gyp infrastructure for MIPS.

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        Implemented performance improvements to the incremental garbage
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        collector.

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        Added optimizations and stability improvements on all platforms.
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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 :-)


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2011-10-28: Version 3.7.3

        Slight deoptimization as a workaround for issue with jslint: Issue
        1789.


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2011-10-27: Version 3.7.2

        Fix bug in deoptimization.  Known issue with jslint: Issue 1789.


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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.


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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.


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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.

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        Fixed compilation issues with GCC 4.5.x (issue 1743).
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        Bug fixes and performance improvements on all platforms.


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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.


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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).


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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.


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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.


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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.


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2011-09-05: Version 3.6.0

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        Fixed a bug when optimizing named function expression (issue 1647).
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        Fixed a bug when optimizing f.call.apply (issue 1650).
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        Made arguments and caller always be null on native functions
        (issues 1548 and 1643).
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        Fixed issue 1648 (cross-compiling x64 targeting ia32).
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        Fixed issue 371 (d8 printing of strings containing \0).
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        Fixed order of evaluation in arguments to parseInt (issue 1649).
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        Fixed a problem with large heap snapshots in Chrome DevTools
        (issue 1658, chromium issue 89268).
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        Upped default maximum heap size from 512M to 700M.
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2011-08-31: Version 3.5.10

        Added dependency of v8_base on WinSocket2 Windows library in
        the GYP-build.

        Various bugfixes.


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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.


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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.


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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.


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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.


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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.


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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.


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2011-08-03: Version 3.5.3

        MIPS: Port of fix to ClassOf check from ARM.
        Patch from Paul Lind <plind44@gmail.com>.

        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.


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2011-08-01: Version 3.5.2

        Performance improvements on all platforms.


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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.


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2011-07-25: Version 3.5.0

        Implemented Object.prototype.{hasOwnProperty, propertyIsEnumerable} for
        proxies.

        Removed logging to memory support.

        Bugfixes and performance work.


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2011-07-20: Version 3.4.14

        Fix the debugger for strict-mode functions. (Chromium issue 89236)

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        Add GetPropertyAttribute method for Object in the API. (Patch by
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        Peter Varga)
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        Fix -Wunused-but-set-variable for gcc-4.6 on x64. (Issue 1291)


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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).


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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).


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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.


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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.

        Fixed linux-tick-processor built wrong version of v8 (issue 1532).

        Fixed assertion failure in v8::TryCache::StackTrace (issue 1529).

        Performance improvements on all platforms.


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2011-07-04: Version 3.4.9

        Added support for debugger inspection of locals in optimized frames
        (issue 1140).

        Fixed SConstruct to pass correct defines to samples/preparser when
        building with library=shared.

        Made date parser handle ES5 Date Time Strings correctly (issue 1498).

        Fixed a bug in Object.defineProperty on the arguments object.

        Performance improvements on all platforms.


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2011-06-29: Version 3.4.8

        Ensure 16-byte stack alignment on Solaris (issue 1505).

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        Fix "illegal access" when calling parseInt with a radix
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        that is not a smi. (issue 1246).


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2011-06-27: Version 3.4.7

        Fixed 64-bit build on FreeBSD.

        Added API to set the property attributes for the prototype
        property on functions created from FunctionTemplates.

        Bugfixes and performance work.


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2011-06-22: Version 3.4.6

        Lowered limit on code space for systems with low memory supply.

        Allowed compiling v8_shell with the 'host' toolset (issue 82437).
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        Extended setBreakpoint API to accept partial script name (issue 1418).

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        Made multi-line comments not count when deciding whether the '-->'
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        comment starter is first on a line. This matches Safari.

        Made handling of non-array recievers in Array length setter correct
        (issue 1491).

        Added ability to heap profiler to iterate over snapshot's node
        (issue 1481).


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2011-06-20: Version 3.4.5

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        Fixed issues 794, 1097, 1215(partial), 1417, 1435, 1472, 1473,
        1476, and 1477.
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        Improved code generation for !0 and !1.

        Reduced memory usage for regular expressions with nested qualifiers.
        (issue 1472)

        Fixed V8 to count line terminators in multi-line comments.
        (Chromium issue 86431)

        Fixed disassembler=on option for release-mode builds. (issue 1473)

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        Performance improvements on all platforms.

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2011-06-15: Version 3.4.4

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        Added snapshot compression support and --stress-opt flag to d8.
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        Improved performance of try/catch.
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        Several GYP-related changes: Added support for building Xcode project
        files. Make the ARM simulator build with GYP again. Generate Makefiles
        for all architectures on Linux.
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        Fixed Array.prototype.{reduce,reduceRight} to pass undefined as the
        receiver for strict mode callbacks. (issue 1436)
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        Fixed a bug where an array load was incorrectly hoisted by GVN.
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        Handle 'undefined' correctly when === has been specialized for doubles.
        (issue 1434)
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        Corrected the limit of local variables in an optimized function from 64
        to 63.
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        Correctly set ReadOnly flag on indexed properties when using the API Set
        method. (issue 1470)
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        Give the correct error message when Object.isExtensible is called on a
        non-object. (issue 1452)
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        Added GetOwnPropertyNames method for Object in the API. Patch by Peter
        Varga.
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        Do not redefine properties unneccesarily in seal and freeze. (issue
        1447)
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        IsExecutionTerminating has an Isolate parameter now.
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        Distinguish keyed loads with a symbol key from fast elements loads,
        avoiding some useless deoptimizations. (issue 1471)
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2011-06-08: Version 3.4.3

        Clear the global thread table when an isolate is disposed
        (issue 1433).

        Converted time zone name to UTF8 on Windows (issue 1290).

        Limited the number of arguments in a function call to 32766
        (issue 1413).

        Compress sources of JS libraries in addition to the snapshot.

        Fixed a bug in Lithium environment iteration.

        Performance improvements on all platforms.

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2011-06-06: Version 3.4.2

        More work on ES-Harmony proxies.  Still hidden behind a flag.

        Fixed some crash bugs and improved performance.

        Fixed building with gdb debugging support.

        Do not install SIGPROF handler until it is needed.

        Added DateTimeFormat to i18n API.

        Fixed compilation on OpenBSD.

        Take the ulimit into account when sizing the heap.  OpenBSD users
        may still have to increase the default ulimit to run heavy pages in
        the browser.

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2011-06-01: Version 3.4.1

        Fixed JSON stringify issue with arrays.

        Changed calls to JS builtins to be passed undefined when called with
        implicit receiver.

        Implemented the set trap for Harmony proxies. Proxies still need to
        be enabled with the --harmony-proxies flag.


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2011-05-30: Version 3.4.0

        Changed calls to undefined property setters to not throw (issue 1355).

        Made RegExp objects not callable.

        Fixed issues on special case large JSON strings in new json parser
        (issues http://crbug.com/83877 and http://crbug.com/84186).

        Performance improvements on all platforms.


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2011-05-25: Version 3.3.10

        Fixed calls of strict mode function with an implicit receiver.

        Fixed fast handling of arrays to properly deal with changes to the
        Object prototype (issue 1403).

        Changed strict mode poison pill to be the same type error function
        (issue 1387).

        Fixed a debug crash in arguments object handling (issue 1227).

        Fixed a bug in deoptimization on x64 (issue 1404).

        Performance improvements and bug fixes on all platforms.


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2011-05-23: Version 3.3.9

        Added DateTimeFormat class to experimental i18n API.

        Extended preparser to give early errors for some strict mode
        restrictions.

        Removed legacy execScript function from V8.

        Extended isolate API with the ability to add embedder-specific
        data to an isolate.

        Added basic support for polymorphic loads from JS and external
        arrays.

        Fixed bug in handling of switch statements in the optimizing
        compiler.


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2011-05-18: Version 3.3.8

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        Added MarkIndependent to the persistent handle API.  Independent
917 918 919
        handles are independent of all other persistent handles and can be
        garbage collected more frequently.

920
        Implemented the get trap for Harmony proxies.  Proxies are enabled
921 922 923 924 925
        with the --harmony-proxies flag.

        Performance improvements and bug fixes on all platforms.


926 927 928 929 930 931 932
2011-05-16: Version 3.3.7

        Updated MIPS infrastructure files.

        Performance improvements and bug fixes on all platforms.


933 934 935 936 937 938 939 940
2011-05-11: Version 3.3.6

        Updated MIPS infrastructure files.

        Added method IsCallable for Object to the API.
        Patch by Peter Varga.


941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957
2011-05-09: Version 3.3.5

        Fixed build on FreeBSD. Patch by Akinori MUSHA.

        Added check that receiver is JSObject on API calls.

        Implemented CallAsConstructor method for Object in the API (Issue 1348).
        Patch by Peter Varga.

        Added CallAsFunction method to the Object class in the API (Issue 1336).
        Patch by Peter Varga.

        Added per-isolate locking and unlocking.

        Fixed bug in x64 >>> operator (Issue 1359).


958 959 960 961 962 963 964 965 966 967 968 969 970 971
2011-05-04: Version 3.3.4

        Implemented API to disallow code generation from strings for a context
        (issue 1258).

        Fixed bug with whitespaces in parseInt (issue 955).

        Fixed bug with == comparison of Date objects (issue 1356).

        Added GYP variables for ARM code generation:
        v8_can_use_vfp_instructions, v8_can_use_unaligned_accesses
        and v8_use_arm_eabi_hardfloat.


972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991
2011-05-02: Version 3.3.3

        Added support for generating Visual Studio solution and project files
        using GYP.

        Implemented support for ARM EABI calling convention variation where
        floating-point arguments are passed in registers (hardfloat).

        Added Object::HasOwnProperty() to the API.

        Added support for compressing startup data to reduce binary size. This
        includes build time support and an API for the embedder to decompress
        the startup data before initializing V8.

        Reduced the profiling hooks overhead from >400% to 25% when using
        ll_prof.

        Performance improvements and bug fixes on all platforms.


992 993 994 995 996 997 998 999 1000 1001 1002 1003
2011-04-27: Version 3.3.2

        Fixed crash bug on ARM with no VFP3 hardware.

        Fixed compilation of V8 without debugger support.

        Improved performance on JSLint.

        Added support Float64 WebGL arrays.

        Fixed crash bug in regexp replace.

1004

1005 1006 1007 1008 1009 1010 1011 1012 1013
2011-04-20: Version 3.3.1

        Reduced V8 binary size by removing virtual functions from hydrogen.

        Fixed crash bug on x64.

        Performance improvements on ARM and IA32.


1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027
2011-04-18: Version 3.3.0

        Fixed bug in floating point rounding in Crankshaft on ARM
        (issue 958)

        Fixed a number of issues with running without VFPv3 support on ARM
        (issue 1315)

        Introduced v8Locale.Collator, a partial implementation of Collator
        per last ECMAScript meeting + mailing list.

        Minor performance improvements and bug fixes.


1028 1029 1030 1031 1032 1033 1034
2011-04-13: Version 3.2.10

        Fixed bug in external float arrays on ARM (issue 1323).

        Minor performance improvements and bug fixes.


1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053
2011-04-11: Version 3.2.9

        Removed support for ABI prior to EABI on ARM.

        Fixed multiple crash bugs.

        Added GCMole to the repository, a simple static analysis tool that
        searches for GC-unsafe evaluation order dependent callsites.

        Made preparser API be exported in shared libraries.

        Fixed multiple issues in EcmaScript 5 strict mode implementation.

        Fixed mutable __proto__ property if object is not extensible
        (Issue 1309).

        Fixed auto suspension of the sampler thread.


1054 1055 1056 1057 1058 1059 1060
2011-04-06: Version 3.2.8

        Exposed WebGL typed array constructors in the shell sample.

        Performance improvements on all platforms.


1061 1062 1063 1064 1065 1066 1067 1068 1069 1070
2011-04-04: Version 3.2.7

        Disabled the original 'classic' V8 code generator.  Crankshaft is
        now the default on all platforms.

        Changed the heap profiler to use more descriptive names.

        Performance and stability improvements to isolates on all platforms.


1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084
2011-03-30: Version 3.2.6

        Fixed xcode build warning in shell.cc (out of order initialization).

        Fixed null-pointer dereference in the compiler when running without
        SSE3 support (Chromium issue 77654).

        Fixed x64 compilation error due to some dead code. (Issue 1286)

        Introduced scons target to build the preparser stand-alone example.

        Made FreeBSD build and pass all tests.


1085 1086
2011-03-28: Version 3.2.5

1087
        Fixed build with Irregexp interpreter (issue 1266).
1088 1089 1090 1091 1092 1093

        Added Crankshaft support for external arrays.

        Fixed two potential crash bugs.


1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106
2011-03-23: Version 3.2.4

        Added isolates which allows several V8 instances in the same process.
        This is controlled through the new Isolate class in the API.

        Implemented more of EcmaScript 5 strict mode.

        Reduced the time it takes to make detailed heap snapshot.

        Added a number of commands to the ARM simulator and enhanced the ARM
        disassembler.


1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121
2011-03-17: Version 3.2.3

        Fixed a number of crash bugs.

        Fixed Array::New(length) to return an array with a length (issue 1256).

        Fixed FreeBSD build.

        Changed __defineGetter__ to not throw (matching the behavior of Safari).

        Implemented more of EcmaScript 5 strict mode.

        Improved Crankshaft performance on all platforms.


1122 1123 1124 1125 1126 1127 1128 1129 1130
2011-03-14: Version 3.2.2

        Fixed a number of crash and correctness bugs.

        Improved Crankshaft performance on all platforms.

        Fixed Crankshaft on Solaris/Illumos.


1131 1132 1133 1134 1135 1136 1137 1138 1139
2011-03-10: Version 3.2.1

        Fixed a number of crash bugs.

        Improved Crankshaft for x64 and ARM.

        Implemented more of EcmaScript 5 strict mode.


1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150
2011-03-07: Version 3.2.0

        Fixed a number of crash bugs.

        Turned on Crankshaft by default on x64 and ARM.

        Improved Crankshaft for x64 and ARM.

        Implemented more of EcmaScript 5 strict mode.


1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163
2011-03-02: Version 3.1.8

        Fixed a number of crash bugs.

        Improved Crankshaft for x64 and ARM.

        Implemented more of EcmaScript 5 strict mode.

        Fixed issue with unaligned reads and writes on ARM.

        Improved heap profiler support.


1164 1165 1166 1167 1168 1169
2011-02-28: Version 3.1.7

        Fixed a number of crash bugs.

        Improved Crankshaft for x64 and ARM.

1170
        Fixed implementation of indexOf/lastIndexOf for sparse
1171 1172 1173 1174 1175 1176 1177
        arrays (http://crbug.com/73940).

        Fixed bug in map space compaction (http://crbug.com/59688).

        Added support for direct getter accessors calls on ARM.


1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190
2011-02-24: Version 3.1.6

        Fixed a number of crash bugs.

        Added support for Cygwin (issue 64).

        Improved Crankshaft for x64 and ARM.

        Added Crankshaft support for stores to pixel arrays.

        Fixed issue in CPU profiler with Crankshaft.


1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201
2011-02-16: Version 3.1.5

        Change RegExp parsing to disallow /(*)/.

        Added GDB JIT support for ARM.

        Fixed several crash bugs.

        Performance improvements on the IA32 platform.


1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238
2011-02-14: Version 3.1.4

        Fixed incorrect compare of prototypes of the global object (issue
        1082).

        Fixed a bug in optimizing calls to global functions (issue 1106).

        Made optimized Function.prototype.apply safe for non-JSObject first
        arguments (issue 1128).

        Fixed an error related to element accessors on Object.prototype and
        parser errors (issue 1130).

        Fixed a bug in sorting an array with large array indices (issue 1131).

        Properly treat exceptions thrown while compiling (issue 1132).

        Fixed bug in register requirements for function.apply (issue 1133).

        Fixed a representation change bug in the Hydrogen graph construction
        (issue 1134).

        Fixed the semantics of delete on parameters (issue 1136).

        Fixed a optimizer bug related to moving instructions with side effects
        (issue 1138).

        Added support for the global object in Object.keys (issue 1150).

        Fixed incorrect value for Math.LOG10E
        (issue http://code.google.com/p/chromium/issues/detail?id=72555)

        Performance improvements on the IA32 platform.

        Implement assignment to undefined reference in ES5 Strict Mode.


1239 1240 1241 1242 1243
2011-02-09: Version 3.1.3

        Fixed a bug triggered by functions with huge numbers of declared
        arguments.

1244
        Fixed zap value aliasing a real object - debug mode only (issue 866).
1245

1246 1247
        Fixed issue where Array.prototype.__proto__ had been set to null
        (issue 1121).
1248 1249 1250 1251

        Fixed stability bugs in Crankshaft for x86.


1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263
2011-02-07: Version 3.1.2

        Added better security checks when accessing properties via
        Object.getOwnPropertyDescriptor.

        Fixed bug in Object.defineProperty and related access bugs (issues
        992, 1083 and 1092).

        Added LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to ease
        copyright notice generation for embedders.


1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277
2011-02-02: Version 3.1.1

        Perform security checks before fetching the value in
        Object.getOwnPropertyDescriptor.

        Fixed a bug in Array.prototype.splice triggered by passing no
        arguments.

        Fixed bugs in -0 in arithmetic and in Math.pow.

        Fixed bugs in the register allocator and in switching from optimized
        to unoptimized code.


1278 1279
2011-01-31: Version 3.1.0

1280 1281 1282
        Performance improvements on all platforms.


1283 1284 1285 1286 1287 1288 1289 1290
2011-01-28: Version 3.0.12

        Added support for strict mode parameter and object property
        validation.

        Fixed a couple of crash bugs.


1291 1292 1293 1294 1295 1296 1297 1298 1299 1300
2011-01-25: Version 3.0.11

        Fixed a bug in deletion of lookup slots that could cause global
        variables to be accidentally deleted (http://crbug.com/70066).

        Added support for strict mode octal literal verification.

        Fixed a couple of crash bugs (issues 1070 and 1071).


1301 1302 1303 1304
2011-01-24: Version 3.0.10

        Fixed External::Wrap for 64-bit addresses (issue 1037).

1305
        Fixed incorrect .arguments variable proxy handling in the full
1306 1307 1308 1309
        code generator (issue 1060).

        Introduced partial strict mode support.

1310 1311
        Changed formatting of recursive error messages to match Firefox and
        Safari (issue http://crbug.com/70334).
1312 1313

        Fixed incorrect rounding for float-to-integer conversions for external
1314
        array types, which implement the Typed Array spec
1315 1316 1317 1318 1319
        (issue http://crbug.com/50972).

        Performance improvements on the IA32 platform.


1320 1321 1322 1323 1324 1325 1326 1327
2011-01-19: Version 3.0.9

        Added basic GDB JIT Interface integration.

        Make invalid break/continue statements a syntax error instead of a
        runtime error.


1328 1329 1330
2011-01-17: Version 3.0.8

        Exposed heap size limit to the heap statistics gathered by
1331
        the GetHeapStatistics API.
1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343

        Wrapped external pointers more carefully (issue 1037).

        Hardened the implementation of error objects to avoid setters
        intercepting the properties set then throwing an error.

        Avoided trashing the FPSCR when calculating Math.floor on ARM.

        Performance improvements on the IA32 platform.


2011-01-10: Version 3.0.7
1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356

        Stopped calling inherited setters when creating object literals
        (issue 1015).

        Changed interpretation of malformed \c? escapes in RegExp to match
        JSC.

        Enhanced the command-line debugger interface and fixed some minor
        bugs in the debugger.

        Performance improvements on the IA32 platform.


1357
2011-01-05: Version 3.0.6
1358

1359
        Allowed getters and setters on JSArray elements (issue 900).
1360

1361 1362
        Stopped JSON objects from hitting inherited setters (part of
        issue 1015).
1363 1364

        Allowed numbers and strings as names of getters/setters in object
1365
        initializer (issue 820).
1366 1367 1368 1369

        Added use_system_v8 option to gyp (off by default), to make it easier
        for Linux distributions to ship with system-provided V8 library.

1370
        Exported external array data accessors (issue 1016).
1371 1372 1373 1374

        Added labelled thread names to help with debugging (on Linux).


1375 1376 1377 1378 1379 1380 1381
2011-01-03: Version 3.0.5

        Fixed a couple of cast errors for gcc-3.4.3.

        Performance improvements in GC and IA32 code generator.


1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392
2010-12-21: Version 3.0.4

        Added Date::ResetCache() to the API so that the cached values in the
        Date object can be reset to allow live DST / timezone changes.

        Extended existing support for printing (while debugging) the contents
        of objects.  Added support for printing objects from release builds.

        Fixed V8 issues 989, 1006, and 1007.


1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409
2010-12-17: Version 3.0.3

        Reapplied all changes for version 3.0.1.

        Improved debugger protocol for remote debugging.

        Added experimental support for using gyp to generate build files
        for V8.

        Fixed implementation of String::Write in the API (issue 975).


2010-12-15: Version 3.0.2

        Revert version 3.0.1 and patch 3.0.1.1.


1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432
2010-12-13: Version 3.0.1

        Added support for an experimental internationalization API as an
        extension.  This extension is disabled by default but can be enabled
        when building V8.  The ECMAScript internationalization strawman is
        at http://wiki.ecmascript.org/doku.php?id=strawman:i18n_api.

        Made RegExp character class parsing stricter.  This mirrors a change
        to RegExp parsing in WebKit.

        Fixed a bug in Object.defineProperty when used to change attributes
        of an existing property.  It incorrectly set the property value to
        undefined (issue 965).

        Fixed several different compilation failures on various platforms
        caused by the 3.0.0 release.

        Optimized Math.pow so it can work on unboxed doubles.

        Sped up quoting of JSON strings by removing one traversal of the
        string.


1433 1434 1435 1436 1437 1438
2010-12-07: Version 3.0.0

        Improved performance by (partially) addressing issue 957 on
        IA-32. Still needs more work for the other architectures.


1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463
2010-11-29: Version 2.5.9

        Fixed crashes during GC caused by partially initialize heap
        objects.

        Fixed bug in process sample that caused memory leaks.

        Improved performance on ARM by implementing missing stubs and
        inlining.

        Improved heap profiler support.

        Added separate seeding on Windows of the random number generator
        used internally by the compiler (issue 936).

        Exposed API for getting the name of the function used to construct
        an object.

        Fixed date parser to handle one and two digit millisecond
        values (issue 944).

        Fixed number parsing to disallow space between sign and
        digits (issue 946).


1464 1465 1466 1467 1468 1469 1470 1471 1472 1473
2010-11-23: Version 2.5.8

        Removed dependency on Gay's dtoa.

        Improved heap profiler precision and speed.

        Reduced overhead of callback invocations on ARM.


2010-11-18: Version 2.5.7
1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496

        Fixed obscure evaluation order bug (issue 931).

        Split the random number state between JavaScript and the private API.

        Fixed performance bug causing GCs when generating stack traces on
        code from very large scripts.

        Fixed bug in parser that allowed (foo):42 as a labelled statement
        (issue 918).

        Provide more accurate results about used heap size via
        GetHeapStatistics.

        Allow build-time customization of the max semispace size.

        Made String.prototype.split honor limit when separator is empty
        (issue 929).

        Added missing failure check after expecting an identifier in
        preparser (Chromium issue 62639).


1497 1498 1499 1500 1501 1502 1503 1504 1505
2010-11-10: Version 2.5.6

        Added support for VFP rounding modes to the ARM simulator.

        Fixed multiplication overflow bug (issue 927).

        Added a limit for the amount of executable memory (issue 925).


1506 1507 1508 1509 1510 1511 1512 1513 1514
2010-11-08: Version 2.5.5

        Added more aggressive GC of external objects in near out-of-memory
        situations.

        Fixed a bug that gave the incorrect result for String.split called
        on the empty string (issue 924).


1515 1516
2010-11-03: Version 2.5.4

1517
        Improved V8 VFPv3 runtime detection to address issue 914.
1518 1519


1520 1521 1522 1523 1524 1525 1526 1527 1528
2010-11-01: Version 2.5.3

        Fixed a bug that prevents constants from overwriting function values
        in object literals (issue 907).

        Fixed a bug with reporting of impossible nested calls of DOM functions
        (issue http://crbug.com/60753).


1529 1530 1531 1532 1533 1534 1535
2010-10-27: Version 2.5.2

        Improved sampler resolution on Linux.

        Allowed forcing the use of a simulator from the build script
        independently of the host architecture.

1536
        Fixed FreeBSD port (issue 912).
1537 1538 1539 1540 1541 1542

        Made windows-tick-processor respect D8_PATH.

        Implemented --noinline-new flag fully on IA32, X64 and ARM platforms.


1543 1544 1545 1546 1547
2010-10-20: Version 2.5.1

        Fixed bug causing spurious out of memory exceptions
        (issue http://crbug.com/54580).

1548
        Fixed compilation error on Solaris platform (issue 901).
1549

1550
        Fixed error in strtod (string to floating point number conversion)
1551 1552
        due to glibc's use of 80-bit floats in the FPU on 32-bit linux.

1553
        Adjusted randomized allocations of executable memory to have 64k
1554 1555
        granularity (issue http://crbug.com/56036).

1556
        Supported profiling using kernel perf_events on linux.  Added ll_prof
1557 1558 1559
        script to tools and --ll-prof flag to V8.


1560 1561 1562 1563 1564 1565 1566
2010-10-18: Version 2.5.0

        Fixed bug in cache handling of lastIndex on global regexps
        (issue http://crbug.com/58740).

        Added USE_SIMULATOR macro that explicitly indicates that we wish to use
        the simulator as the execution engine (by Mark Lam <mark.lam@palm.com>
1567
        from Hewlett-Packard Development Company, LP).
1568 1569 1570 1571

        Fixed compilation error on ARM with gcc 4.4 (issue 894).


1572
2010-10-13: Version 2.4.9
1573 1574 1575 1576 1577 1578 1579 1580 1581

        Fixed a bug in the handling of conditional expressions in test
        contexts in compiler for top-level code.

        Added "//@ sourceURL" information to the StackTrace API.

        Exposed RegExp construction through the API.


1582 1583 1584 1585 1586 1587 1588 1589
2010-10-04: Version 2.4.8

        Fixed a bug in ResumeProfilerEx causing it to not always write out the
        whole snapshot (issue 868).

        Performance improvements on all platforms.


1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602
2010-09-30: Version 2.4.7

        Changed the command-line flag --max-new-space-size to be in kB and the
        flag --max-old-space-size to be in MB (previously they were in bytes).

        Added Debug::CancelDebugBreak to the debugger API.

        Fixed a bug in getters for negative numeric property names
        (https://bugs.webkit.org/show_bug.cgi?id=46689).

        Performance improvements on all platforms.


1603
2010-09-27: Version 2.4.6
1604

1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616
        Fixed assertion failure related to copy-on-write arrays (issue 876).

        Fixed build failure of 64-bit V8 on Windows.

        Fixed a bug in RegExp (issue http://crbug.com/52801).

        Improved the profiler's coverage to cover more functions (issue 858).

        Fixed error in shift operators on 64-bit V8
        (issue http://crbug.com/54521).


1617
2010-09-22: Version 2.4.5
1618

1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630
        Changed the RegExp benchmark to exercise the regexp engine on different
        inputs by scrambling the input strings.

        Fixed a bug in keyed loads on strings.

        Fixed a bug with loading global function prototypes.

        Fixed a bug with profiling RegExp calls (issue http://crbug.com/55999).

        Performance improvements on all platforms.


1631 1632
2010-09-15: Version 2.4.4

1633
        Fixed bug with hangs on very large sparse arrays.
1634

1635
        Now tries harder to free up memory when running out of space.
1636

1637
        Added heap snapshots to JSON format to API.
1638

1639
        Recalibrated benchmarks.
1640 1641


1642 1643 1644 1645 1646 1647 1648
2010-09-13: Version 2.4.3

        Made Date.parse properly handle TZ offsets (issue 857).

        Performance improvements on all platforms.


1649 1650 1651 1652 1653 1654 1655 1656 1657 1658
2010-09-08: Version 2.4.2

        Fixed GC crash bug.

        Fixed stack corruption bug.

        Fixed compilation for newer C++ compilers that found Operand(0)
        ambiguous.


1659 1660
2010-09-06: Version 2.4.1

1661 1662 1663
        Added the ability for an embedding application to receive a callback
        when V8 allocates (V8::AddMemoryAllocationCallback) or deallocates
        (V8::RemoveMemoryAllocationCallback) from the OS.
1664

1665
        Fixed several JSON bugs (including issue 855).
1666

1667 1668
        Fixed memory overrun crash bug triggered during V8's tick-based
        profiling.
1669

1670
        Performance improvements on all platforms.
1671 1672


1673 1674
2010-09-01: Version 2.4.0

1675 1676
        Fixed bug in Object.freeze and Object.seal when Array.prototype or
        Object.prototype are changed (issue 842).
1677

1678
        Updated Array.splice to follow Safari and Firefox when called
1679
        with zero arguments.
1680

1681
        Fixed a missing live register when breaking at keyed loads on ARM.
1682

1683
        Performance improvements on all platforms.
1684 1685


1686 1687
2010-08-25: Version 2.3.11

1688
        Fixed bug in RegExp related to copy-on-write arrays.
1689

1690
        Refactored tools/test.py script, including the introduction of
1691 1692
        VARIANT_FLAGS that allows specification of sets of flags with which
        all tests should be run.
1693

1694
        Fixed a bug in the handling of debug breaks in CallIC.
1695

1696
        Performance improvements on all platforms.
1697 1698 1699 1700


2010-08-23: Version 2.3.10

1701
        Fixed bug in bitops on ARM.
1702 1703 1704 1705 1706 1707 1708 1709

        Build fixes for unusual compilers.

        Track high water mark for RWX memory.

        Performance improvements on all platforms.


1710 1711
2010-08-18: Version 2.3.9

1712
        Fixed compilation for ARMv4 on OpenBSD/FreeBSD.
1713 1714 1715

        Removed specialized handling of GCC 4.4 (issue 830).

1716
        Fixed DST cache to take into account the suspension of DST in
1717 1718
        Egypt during the 2010 Ramadan (issue http://crbug.com/51855).

1719
        Performance improvements on all platforms.
1720 1721


1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733
2010-08-16: Version 2.3.8

        Fixed build with strict aliasing on GCC 4.4 (issue 463).

        Fixed issue with incorrect handling of custom valueOf methods on
        string wrappers (issue 760).

        Fixed compilation for ARMv4 (issue 590).

        Improved performance.


1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752
2010-08-11: Version 2.3.7

        Reduced size of heap snapshots produced by heap profiler (issue 783).

        Introduced v8::Value::IsRegExp method.

        Fixed CPU profiler crash in start / stop sequence when non-existent
        name is passed (issue http://crbug.com/51594).

        Introduced new indexed property query callbacks API (issue 816). This
        API is guarded by USE_NEW_QUERY_CALLBACK define and is disabled
        by default.

        Removed support for object literal get/set with number/string
        property name.

        Fixed handling of JSObject::elements in CalculateNetworkSize
        (issue 822).

1753
        Allowed compiling with strict aliasing enabled on GCC 4.4 (issue 463).
1754 1755


1756 1757
2010-08-09: Version 2.3.6

1758 1759
        RegExp literals create a new object every time they are evaluated
        (issue 704).
1760

1761
        Object.seal and Object.freeze return the modified object (issue 809).
1762

1763
        Fixed building using GCC 4.4.4.
1764 1765


1766 1767 1768 1769 1770 1771
2010-08-04: Version 2.3.5

        Added support for ES5 property names. Object initialisers and
        dot-notation property access now allows keywords. Also allowed
        non-identifiers after "get" or "set" in an object initialiser.

1772
        Randomized the addresses of allocated executable memory on Windows.
1773 1774


1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799
2010-08-02: Version 2.3.4

        Fixed problems in implementation of ES5 function.prototype.bind.

        Fixed error when using apply with arguments object on ARM (issue 784).

        Added setting of global flags to debugger protocol.

        Fixed an error affecting cached results of sin and cos (issue 792).

        Removed memory leak from a boundary case where V8 is not initialized.

        Fixed issue where debugger could set breakpoints outside the body
        of a function.

        Fixed issue in debugger when using both live edit and step in features.

        Added Number-letter (Nl) category to Unicode tables.  These characters
        can now be used in identifiers.

        Fixed an assert failure on X64 (issue 806).

        Performance improvements on all platforms.


1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813
2010-07-26: Version 2.3.3

        Fixed error when building the d8 shell in a fresh checkout.

        Implemented Function.prototype.bind (ES5 15.3.4.5).

        Fixed an error in inlined stores on ia32.

        Fixed an error when setting a breakpoint at the end of a function
        that does not end with a newline character.

        Performance improvements on all platforms.


1814 1815 1816 1817 1818 1819 1820 1821
2010-07-21: Version 2.3.2

        Fixed compiler warnings when building with LLVM.

        Fixed a bug with for-in applied to strings (issue 785).

        Performance improvements on all platforms.

1822

1823 1824 1825 1826 1827 1828 1829 1830 1831 1832
2010-07-19: Version 2.3.1

        Fixed compilation and linking with V8_INTERPRETED_REGEXP flag.

        Fixed bug related to code flushing while compiling a lazy
        compilable function (issue http://crbug.com/49099).

        Performance improvements on all platforms.


1833 1834 1835 1836 1837 1838 1839 1840
2010-07-15: Version 2.3.0

        Added ES5 Object.seal and Object.isSealed.

        Added debugger API for scheduling debugger commands from a
        separate thread.


1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855
2010-07-14: Version 2.2.24

        Added API for capturing stack traces for uncaught exceptions.

        Fixed crash bug when preparsing from a non-external V8 string
        (issue 775).

        Fixed JSON.parse bug causing input not to be converted to string
        (issue 764).

        Added ES5 Object.freeze and Object.isFrozen.

        Performance improvements on all platforms.


1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868
2010-07-07: Version 2.2.23

        API change: Convert Unicode code points outside the basic multilingual
        plane to the replacement character.  Previous behavior was to silently
        truncate the value to 16 bits.

        Fixed crash: handle all flat string types in regexp replace.

        Prevent invalid pre-parsing data passed in through the API from
        crashing V8.

        Performance improvements on all platforms.

1869

1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881
2010-07-05: Version 2.2.22

        Added ES5 Object.isExtensible and Object.preventExtensions.

        Enabled building V8 as a DLL.

        Fixed a bug in date code where -0 was not interpreted as 0
        (issue 736).

        Performance improvements on all platforms.


1882 1883
2010-06-30: Version 2.2.21

1884
        Fixed bug in externalizing some ASCII strings (Chromium issue 47824).
1885

1886
        Updated JSON.stringify to floor the space parameter (issue 753).
1887

1888
        Updated the Mozilla test expectations to the newest version.
1889

1890
        Updated the ES5 Conformance Test expectations to the latest version.
1891

1892
        Updated the V8 benchmark suite.
1893 1894 1895 1896

        Provide actual breakpoints locations in response to setBreakpoint
        and listBreakpoints requests.

1897

1898
2010-06-28: Version 2.2.20
1899

1900
        Fixed bug with for-in on x64 platform (issue 748).
1901

1902
        Fixed crash bug on x64 platform (issue 756).
1903

1904
        Fixed bug in Object.getOwnPropertyNames. (chromium issue 41243).
1905

1906
        Fixed a bug on ARM that caused the result of 1 << x to be
1907 1908 1909 1910
        miscalculated for some inputs.

        Performance improvements on all platforms.

1911

1912 1913
2010-06-23: Version 2.2.19

1914
        Fixed bug that causes the build to break when profillingsupport=off
1915 1916 1917 1918 1919 1920 1921
        (issue 738).

        Added expose-externalize-string flag for testing extensions.

        Resolve linker issues with using V8 as a DLL causing a number of
        problems with unresolved symbols.

1922
        Fixed build failure for cctests when ENABLE_DEBUGGER_SUPPORT is not
1923 1924 1925 1926 1927
        defined.

        Performance improvements on all platforms.


1928 1929 1930 1931 1932
2010-06-16: Version 2.2.18

        Added API functions to retrieve information on indexed properties
        managed by the embedding layer.  Fixes bug 737.

1933
        Made ES5 Object.defineProperty support array elements.  Fixes bug 619.
1934

1935
        Added heap profiling to the API.
1936

1937
        Removed old named property query from the API.
1938 1939 1940 1941

        Incremental performance improvements.


1942
2010-06-14: Version 2.2.17
1943

1944 1945 1946 1947 1948 1949 1950
        Improved debugger support for stepping out of functions.

        Incremental performance improvements.


2010-06-09: Version 2.2.16

1951
        Removed the SetExternalStringDiposeCallback API. Changed the
1952 1953 1954
        disposal of external string resources to call a virtual Dispose
        method on the resource.

1955
        Added support for more precise break points when debugging and
1956 1957 1958 1959 1960
        stepping.

        Memory usage improvements on all platforms.


1961 1962
2010-06-07: Version 2.2.15

1963
        Added an API to control the disposal of external string resources.
1964

1965
        Added missing initialization of a couple of variables which makes
1966 1967
        some compilers complaint when compiling with -Werror.

1968
        Improved performance on all platforms.
1969 1970


1971 1972 1973 1974 1975 1976 1977 1978 1979
2010-06-02: Version 2.2.14

        Fixed a crash in code generated for String.charCodeAt.

        Fixed a compilation issue with some GCC versions (issue 727).

        Performance optimizations on x64 and ARM platforms.


1980 1981
2010-05-31: Version 2.2.13

1982
        Implemented Object.getOwnPropertyDescriptor for element indices and
1983 1984
        strings (issue 599).

1985
        Fixed bug for windows 64 bit C calls from generated code.
1986

1987
        Added new scons flag unalignedaccesses for arm builds.
1988 1989 1990 1991

        Performance improvements on all platforms.


1992 1993
2010-05-26: Version 2.2.12

1994 1995
        Allowed accessors to be defined on objects rather than just object
        templates.
1996

1997
        Changed the ScriptData API.
1998 1999


2000 2001
2010-05-21: Version 2.2.11

2002
        Fixed crash bug in liveedit on 64 bit.
2003 2004 2005 2006 2007 2008 2009 2010 2011

        Use 'full compiler' when debugging is active.  This should increase
        the density of possible break points, making single step more fine
        grained.  This will only take effect for functions compiled after
        debugging has been started, so recompilation of all functions is
        required to get the full effect.  IA32 and x64 only for now.

        Misc. fixes to the Solaris build.

2012
        Added new flags --print-cumulative-gc-stat and --trace-gc-nvp.
2013

2014
        Added filtering of CPU profiles by security context.
2015

2016
        Fixed crash bug on ARM when running without VFP2 or VFP3.
2017 2018 2019 2020

        Incremental performance improvements in all backends.


2021 2022 2023 2024 2025
2010-05-17: Version 2.2.10

        Performance improvements in the x64 and ARM backends.


2026 2027
2010-05-10: Version 2.2.9

2028
        Allowed Object.create to be called with a function (issue 697).
2029 2030 2031 2032

        Fixed bug with Date.parse returning a non-NaN value when called on a
        non date string (issue 696).

2033
        Allowed unaligned memory accesses on ARM targets that support it (by
2034
        Subrato K De of CodeAurora <subratokde@codeaurora.org>).
2035 2036 2037 2038

        C++ API for retrieving JavaScript stack trace information.


2039 2040 2041 2042 2043
2010-05-05: Version 2.2.8

        Performance improvements in the x64 and ARM backends.


2044 2045 2046 2047 2048 2049 2050
2010-05-03: Version 2.2.7

        Added support for ES5 date time string format to Date.parse.

        Performance improvements in the x64 backend.


2051 2052
2010-04-28: Version 2.2.6

2053
        Added "amd64" as recognized architecture in scons build script
2054 2055
        (by Ryan Dahl <coldredlemur@gmail.com>).

2056
        Fixed bug in String search and replace with very simple RegExps.
2057

2058
        Fixed bug in RegExp containing "\b^".
2059 2060 2061

        Performance improvements on all platforms.

2062

2063 2064 2065 2066 2067 2068 2069
2010-04-26: Version 2.2.5

        Various performance improvements (especially for ARM and x64)

        Fixed bug in CPU profiling (http://crbug.com/42137)

        Fixed a bug with the natives cache.
2070 2071

        Fixed two bugs in the ARM code generator that can cause
2072 2073 2074 2075 2076 2077
        wrong calculations.

        Fixed a bug that may cause a wrong result for shift operations.


2010-04-21: Version 2.2.4
2078 2079 2080 2081 2082 2083 2084 2085

        Fixed warnings on arm on newer GCC versions.

        Fixed a number of minor bugs.

        Performance improvements on all platforms.


2086 2087 2088 2089 2090 2091 2092 2093 2094
2010-04-14: Version 2.2.3

        Added stack command and mem command to ARM simulator debugger.

        Fixed scons snapshot and ARM build, and Windows X64 build issues.

        Performance improvements on all platforms.


2095 2096 2097 2098 2099 2100 2101
2010-04-12: Version 2.2.2

        Introduced new profiler API.

        Fixed random number generator to produce full 32 random bits.


2102 2103 2104 2105 2106 2107 2108
2010-04-06: Version 2.2.1

        Debugger improvements.

        Fixed minor bugs.


2109 2110 2111 2112 2113 2114 2115
2010-03-29: Version 2.2.0

        Fixed a few minor bugs.

        Performance improvements for string operations.


2116 2117 2118 2119 2120 2121 2122
2010-03-26: Version 2.1.10

        Fixed scons build issues.

        Fixed a couple of minor bugs.


2123 2124 2125 2126 2127 2128 2129 2130 2131 2132
2010-03-25: Version 2.1.9

        Added API support for reattaching a global object to a context.

        Extended debugger API with access to the internal debugger context.

        Fixed Chromium crashes (issues http://crbug.com/39128 and
        http://crbug.com/39160)


2133 2134 2135 2136 2137 2138 2139
2010-03-24: Version 2.1.8

        Added fine-grained garbage collection callbacks to the API.

        Performance improvements on all platforms.


2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153
2010-03-22: Version 2.1.7

        Fixed issue 650.

        Fixed a bug where __proto__ was sometimes enumerated (issue 646).

        Performance improvements for arithmetic operations.

        Performance improvements for string operations.

        Print script name and line number information in stack trace.


2010-03-17: Version 2.1.6
2154 2155 2156 2157 2158

        Performance improvements for arithmetic operations.

        Performance improvements for string operations.

2159

2160 2161 2162 2163 2164 2165 2166
2010-03-10: Version 2.1.4

        Fixed code cache lookup for keyed IC's (issue http://crbug.com/37853).

        Performance improvements on all platforms.


2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184
2010-03-10: Version 2.1.3

        Added API method for context-disposal notifications.

        Added API method for accessing elements by integer index.

        Added missing implementation of Uint32::Value and Value::IsUint32
        API methods.

        Added IsExecutionTerminating API method.

        Disabled strict aliasing for GCC 4.4.

        Fixed string-concatenation bug (issue 636).

        Performance improvements on all platforms.


2185 2186
2010-02-23: Version 2.1.2

2187
        Fixed a crash bug caused by wrong assert.
2188

2189
        Fixed a bug with register names on 64-bit V8 (issue 615).
2190 2191 2192

        Performance improvements on all platforms.

2193

2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207
2010-02-19: Version 2.1.1

        [ES5] Implemented Object.defineProperty.

        Improved profiler support.

        Added SetPrototype method in the public V8 API.

        Added GetScriptOrigin and GetScriptLineNumber methods to Function
        objects in the API.

        Performance improvements on all platforms.


2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224
2010-02-03: Version 2.1.0

        Values are now always wrapped in objects when used as a receiver.
        (issue 223).

        [ES5] Implemented Object.getOwnPropertyNames.

        [ES5] Restrict JSON.parse to only accept strings that conforms to the
        JSON grammar.

        Improvement of debugger agent (issue 549 and 554).

        Fixed problem with skipped stack frame in profiles (issue 553).

        Solaris support by Erich Ocean <erich.ocean@me.com> and Ryan Dahl
        <ry@tinyclouds.org>.

2225
        Fixed a bug that Math.round() returns incorrect results for huge
2226 2227
        integers.

2228
        Fixed enumeration order for objects created from some constructor
2229 2230
        functions (isue http://crbug.com/3867).

2231
        Fixed arithmetic on some integer constants (issue 580).
2232 2233 2234 2235 2236

        Numerous performance improvements including porting of previous IA-32
        optimizations to x64 and ARM architectures.


2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252
2010-01-14: Version 2.0.6

        Added ES5 Object.getPrototypeOf, GetOwnPropertyDescriptor,
        GetOwnProperty, FromPropertyDescriptor.

        Fixed Mac x64 build errors.

        Improved performance of some math and string operations.

        Improved performance of some regexp operations.

        Improved performance of context creation.

        Improved performance of hash tables.


2253 2254 2255 2256 2257 2258 2259 2260 2261 2262
2009-12-18: Version 2.0.5

        Extended to upper limit of map space to allow for 7 times as many map
        to be allocated (issue 524).

        Improved performance of code using closures.

        Improved performance of some binary operations involving doubles.


2263 2264
2009-12-16: Version 2.0.4

2265
        Added ECMAScript 5 Object.create.
2266

2267
        Improved performance of Math.max and Math.min.
2268

2269
        Optimized adding of strings on 64-bit platforms.
2270

2271 2272 2273
        Improved handling of external strings by using a separate table
        instead of weak handles.  This improves garbage collection
        performance and uses less memory.
2274

2275 2276
        Changed code generation for object and array literals in toplevel
        code to be more compact by doing more work in the runtime.
2277

2278 2279
        Fixed a crash bug triggered when garbage collection happened during
        generation of a callback load inline cache stub.
2280

2281 2282
        Fixed crash bug sometimes triggered when local variables shadowed
        parameters in functions that used the arguments object.
2283 2284


2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307
2009-12-03: Version 2.0.3

        Optimized handling and adding of strings, for-in and Array.join.

        Heap serialization is now non-destructive.

        Improved profiler support with information on time spend in C++
        callbacks registered through the API.

        Added commands to the debugger protocol for starting/stopping
        profiling.

        Enabled the non-optimizing compiler for top-level code.

        Changed the API to only allow strings to be set as data objects on
        Contexts and scripts to avoid potentially keeping global objects
        around for too long (issue 528).

        OpenBSD support patch by Peter Valchev <pvalchev@gmail.com>.

        Fixed bugs.


2308 2309 2310 2311 2312 2313 2314
2009-11-24: Version 2.0.2

        Improved profiler support.

        Fixed bug that broke compilation of d8 with readline support.


2315 2316 2317 2318 2319 2320 2321
2009-11-20: Version 2.0.1

        Fixed crash bug in String.prototype.replace.

        Reverted a change which caused Chromium interactive ui test
        failures.

2322

2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339
2009-11-18: Version 2.0.0

        Added support for VFP on ARM.

        Added TryCatch::ReThrow method to the API.

        Reduced the size of snapshots and improved the snapshot load time.

        Improved heap profiler support.

        64-bit version now supported on Windows.

        Fixed a number of debugger issues.

        Fixed bugs.


2340 2341 2342 2343
2009-10-29: Version 1.3.18

        Reverted a change which caused crashes in RegExp replace.

2344
        Reverted a change which caused Chromium ui_tests failure.
2345 2346


2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365
2009-10-28: Version 1.3.17

        Added API method to get simple heap statistics.

        Improved heap profiler support.

        Fixed the implementation of the resource constraint API so it
        works when using snapshots.

        Fixed a number of issues in the Windows 64-bit version.

        Optimized calls to API getters.

        Added valgrind notification on code modification to the 64-bit version.

        Fixed issue where we logged shared library addresses on Windows at
        startup and never used them.


2366
2009-10-16: Version 1.3.16
2367

2368 2369
        X64: Convert smis to holding 32 bits of payload.

2370
        Introduced v8::Integer::NewFromUnsigned method.
2371

2372
        Added missing null check in Context::GetCurrent.
2373

2374
        Added trim, trimLeft and trimRight methods to String
2375 2376 2377 2378 2379 2380 2381
        Patch by Jan de Mooij <jandemooij@gmail.com>

        Implement ES5 Array.isArray
        Patch by Jan de Mooij <jandemooij@gmail.com>

        Skip access checks for hidden properties.

2382 2383
        Added String::Concat(Handle<String> left, Handle<String> right) to the
        V8 API.
2384

2385
        Fixed GYP-based builds of V8.
2386 2387


2388 2389
2009-10-07: Version 1.3.15

2390
        Expanded the maximum size of the code space to 512MB for 64-bit mode.
2391 2392 2393 2394 2395

        Fixed a crash bug happening when starting profiling (issue
        http://crbug.com/23768).


2396 2397 2398 2399 2400 2401
2009-10-07: Version 1.3.14

        Added GetRealNamedProperty to the API to lookup real properties
        located on the object or in the prototype chain skipping any
        interceptors.

2402
        Fixed the stack limits setting API to work correctly with threads. The
2403 2404
        stack limit now needs to be set to each thread thich is used with V8.

2405
        Removed the high-priority flag from IdleNotification()
2406 2407 2408 2409

        Ensure V8 is initialized before locking and unlocking threads.

        Implemented a new JavaScript minifier for compressing the source of
2410
        the built-in JavaScript. This removes non-Open Source code from Douglas
2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437
        Crockford from the project.

        Added a missing optimization in StringCharAt.

        Fixed some flaky socket tests.

        Change by Alexander Botero-Lowry to fix profiler sampling on FreeBSD
        in 64-bit mode.

        Fixed memory leaks in the thread management code.

        Fixed the result of assignment to a pixel array. The assigned value
        is now the result.

        Error reporting for invalid left-hand sides in for-in statements, pre-
        and postfix count expressions, and assignments now matches the JSC
        behavior in Safari 4.

        Follow the spec in disallowing function declarations without a name.

        Always allocate code objects within a 2 GB range. On x64 architecture
        this is used to use near calls (32-bit displacement) in Code objects.

        Optimized array construction ported to x64 and ARM architectures.

        [ES5] Changed Object.keys to return strings for element indices.

2438

2439 2440 2441 2442 2443 2444 2445
2009-09-23: Version 1.3.13

        Fixed uninitialized memory problem.

        Improved heap profiler support.


2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459
2009-09-22: Version 1.3.12

        Changed behavior of |function|.toString() on built-in functions to
        be compatible with other implementations.  Patch by Jan de Mooij.

        Added Object::IsDirty in the API.

        Optimized array construction; it is now handled purely in native
        code.

        [ES5] Made properties of the arguments array enumerable.

        [ES5] Added test suite adapter for the es5conform test suite.

2460
        [ES5] Added Object.keys function.
2461

2462

2463 2464 2465 2466 2467 2468 2469 2470 2471 2472
2009-09-15: Version 1.3.11

        Fixed crash in error reporting during bootstrapping.

        Optimized generated IA32 math code by using SSE2 instructions when
        available.

        Implemented missing pieces of debugger infrastructure on ARM.  The
        debugger is now fully functional on ARM.

2473
        Made 'hidden' the default visibility for gcc.
2474 2475


2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487
2009-09-09: Version 1.3.10

        Fixed profiler on Mac in 64-bit mode.

        Optimized creation of objects from simple constructor functions on
        ARM.

        Fixed a number of debugger issues.

        Reduced the amount of memory consumed by V8.


2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506
2009-09-02: Version 1.3.9

        Optimized stack guard checks on ARM.

        Optimized API operations by inlining more in the API.

        Optimized creation of objects from simple constructor functions.

        Enabled a number of missing optimizations in the 64-bit port.

        Implemented native-code support for regular expressions on ARM.

        Stopped using the 'sahf' instruction on 64-bit machines that do
        not support it.

        Fixed a bug in the support for forceful termination of JavaScript
        execution.


2507 2508 2509 2510 2511 2512
2009-08-26: Version 1.3.8

        Changed the handling of idle notifications to allow idle
        notifications when V8 has not yet been initialized.

        Fixed ARM simulator compilation problem on Windows.
2513

2514

2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525
2009-08-25: Version 1.3.7

        Reduced the size of generated code on ARM platforms by reducing
        the size of constant pools.

        Changed build files to not include the 'ENV' user environment
        variable in the build environment.

        Changed the handling of idle notifications.


2526 2527
2009-08-21: Version 1.3.6

2528
        Added support for forceful termination of JavaScript execution.
2529

2530
        Added low memory notification to the API. The embedding host can signal
2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541
        a low memory situation to V8.

        Changed the handling of global handles (persistent handles in the API
        sense) to avoid issues regarding allocation of new global handles
        during weak handle callbacks.

        Changed the growth policy of the young space.

        Fixed a GC issue introduced in version 1.3.5.


2542 2543
2009-08-19: Version 1.3.5

2544
        Optimized initialization of some arrays in the builtins.
2545

2546
        Fixed mac-nm script to support filenames with spaces.
2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558

        Support for using the V8 profiler when V8 is embedded in a Windows DLL.

        Changed typeof RegExp from 'object' to 'function' for compatibility.
        Fixed bug where regexps were not callable across contexts.

        Added context independent script compilation to the API.

        Added API call to get the stack trace for an exception.

        Added API for getting object mirrors.

2559
        Made sure that SSE3 instructions are used whenever possible even when
2560 2561 2562 2563 2564 2565 2566 2567 2568
        running off a snapshot generated without using SSE3 instructions.

        Tweaked the handling of the initial size and growth policy of the heap.

        Added native code generation for RegExp to 64-bit version.

        Added JavaScript debugger support to 64-bit version.


2569 2570 2571 2572 2573 2574 2575 2576 2577 2578
2009-08-13: Version 1.3.4

        Added a readline() command to the d8 shell.

        Fixed bug in json parsing.

        Added idle notification to the API and reduced memory on idle
        notifications.


2579 2580
2009-08-12: Version 1.3.3

2581
        Fixed issue 417: incorrect %t placeholder expansion.
2582

2583
        Added .gitignore file similar to Chromium's one.
2584

2585
        Fixed SConstruct file to build with new logging code for Android.
2586 2587 2588 2589 2590 2591

        API: added function to find instance of template in prototype
        chain.  Inlined Object::IsInstanceOf.

        Land change to notify valgrind when we modify code on x86.

2592
        Added api call to determine whether a string can be externalized.
2593

2594
        Added a write() command to d8.
2595 2596


2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611
2009-08-05: Version 1.3.2

        Started new compiler infrastructure for two-pass compilation using a
        control flow graph constructed from the AST.

        Profiler stack sampling for X64.

        Safe handling of NaN to Posix platform-dependent time functions.

        Added a new profiler control API to unify controlling various aspects
        of profiling.

        Fixed issue 392.


2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627
2009-07-30: Version 1.3.1

        Speed improvements to accessors and interceptors.

        Added support for capturing stack information on custom errors.

        Added support for morphing an object into a pixel array where its
        indexed properties are stored in an external byte array. Values written
        are always clamped to the 0..255 interval.

        Profiler on x64 now handles C/C++ functions from shared libraries.

        Changed the debugger to avoid stepping into function.call/apply if the
        function is a built-in.

        Initial implementation of constructor heap profile for JS objects.
2628

2629
        More fine grained control of profiling aspects through the API.
2630

2631 2632 2633
        Optimized the called as constructor check for API calls.


2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654
2009-07-27: Version 1.3.0

        Allowed RegExp objects to be called as functions (issue 132).

        Fixed issue where global property cells would escape after
        detaching the global object; see http://crbug.com/16276.

        Added support for stepping into setters and getters in the
        debugger.

        Changed the debugger to avoid stopping in its own JavaScript code
        and in the code of built-in functions.

        Fixed issue 345 by avoiding duplicate escaping labels.

        Fixed ARM code generator crash in short-circuited boolean
        expressions and added regression tests.

        Added an external allocation limit to avoid issues where small V8
        objects would hold on to large amounts of external memory without
        causing garbage collections.
2655 2656

        Finished more of the inline caching stubs for x64 targets.
2657 2658


2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674
2009-07-13: Version 1.2.14

        Added separate paged heap space for global property cells and
        avoid updating the write barrier when storing into them.

        Improved peep-hole optimization on ARM platforms by not emitting
        unnecessary debug information.

        Re-enabled ICs for loads and calls that skip a global object
        during lookup through the prototype chain.

        Allowed access through global proxies to use ICs.

        Fixed issue 401.


2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685
2009-07-09: Version 1.2.13

        Fixed issue 397, issue 398, and issue 399.

        Added support for breakpoint groups.

        Fixed bugs introduced with the new global object representation.

        Fixed a few bugs in the ARM code generator.


2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698
2009-07-06: Version 1.2.12

        Added stack traces collection to Error objects accessible through
        the e.stack property.

        Changed RegExp parser to use a recursive data structure instead of
        stack-based recursion.

        Optimized Date object construction and string concatenation.

        Improved performance of div, mod, and mul on ARM platforms.


2699 2700 2701 2702 2703 2704 2705 2706 2707 2708
2009-07-02: Version 1.2.11

        Improved performance on IA-32 and ARM.

        Fixed profiler sampler implementation on Mac OS X.

        Changed the representation of global objects to improve
        performance of adding a lot of new properties.


2709 2710 2711 2712 2713 2714 2715 2716 2717
2009-06-29: Version 1.2.10

        Improved debugger support.

        Fixed bug in exception message reporting (issue 390).

        Improved overall performance.


2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735
2009-06-23: Version 1.2.9

        Improved math performance on ARM.

        Fixed profiler name-inference bug.

        Fixed handling of shared libraries in the profiler tick processor
        scripts.

        Fixed handling of tests that time out in the test scripts.

        Fixed compilation on MacOS X version 10.4.

        Fixed two bugs in the regular expression engine.

        Fixed a bug in the string type inference.

        Fixed a bug in the handling of 'constant function' properties.
2736

2737
        Improved overall performance.
2738

2739

2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753
2009-06-16: Version 1.2.8

        Optimized math on ARM platforms.

        Fixed two crash bugs in the handling of getters and setters.

        Improved the debugger support by adding scope chain information.

        Improved the profiler support by compressing log data transmitted
        to clients.

        Improved overall performance.


2754 2755 2756 2757 2758 2759 2760 2761 2762 2763 2764 2765 2766 2767 2768 2769 2770 2771 2772 2773 2774
2009-06-08: Version 1.2.7

        Improved debugger and profiler support.

        Reduced compilation time by improving the handling of deferred
        code.

        Optimized interceptor accesses where the property is on the object
        on which the interceptors is attached.

        Fixed compilation problem on GCC 4.4 by changing the stack
        alignment to 16 bytes.

        Fixed handle creation to follow stric aliasing rules.

        Fixed compilation on FreeBSD.

        Introduced API for forcing the deletion of a property ignoring
        interceptors and attributes.


2775 2776 2777 2778 2779 2780 2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796
2009-05-29: Version 1.2.6

        Added a histogram recording hit rates at different levels of the
        compilation cache.

        Added stack overflow check for the RegExp analysis phase. Previously a
        very long regexp graph could overflow the stack with recursive calls.

        Use a dynamic buffer when collecting log events in memory.

        Added start/stop events to the profiler log.

        Fixed infinite loop which could happen when setting a debug break while
        executing a RegExp compiled to native code.

        Fixed handling of lastIndexOf called with negative index (issue 351).

        Fixed irregular crash in profiler test (issue 358).

        Fixed compilation issues with some versions of gcc.


2797 2798 2799 2800 2801 2802 2803 2804 2805 2806 2807 2808 2809 2810 2811 2812 2813 2814 2815
2009-05-26: Version 1.2.5

        Fixed bug in initial boundary check for Boyer-Moore text
        search (issue 349).

        Fixed compilation issues with MinGW and gcc 4.3+ and added support
        for armv7 and cortex-a8 architectures.  Patches by Lei Zhang and
        Craig Schlenter.

        Added a script cache to the debugger.

        Optimized compilation performance by improving internal data
        structures and avoiding expensive property load optimizations for
        code that's infrequently executed.

        Exposed the calling JavaScript context through the static API
        function Context::GetCalling().


2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842
2009-05-18: Version 1.2.4

        Improved performance of floating point number allocation for ARM
        platforms.

        Fixed crash when using the instanceof operator on functions with
        number values in their prototype chain (issue 341).

        Optimized virtual frame operations in the code generator to speed
        up compilation time and allocated the frames in the zone.

        Made the representation of virtual frames and jump targets in the
        code generator much more compact.

        Avoided linear search for non-locals in scope code when resolving
        variables inside with and eval scopes.

        Optimized lexical scanner by dealing with whitespace as part of
        the token scanning instead of as a separate step before it.

        Changed the scavenging collector so that promoted objects do not
        reside in the old generation while their remembered set is being
        swept for pointers into the young generation.

        Fixed numeric overflow handling when compiling count operations.


2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854
2009-05-11: Version 1.2.3

        Fixed bug in reporting of out-of-memory situations.

        Introduced hidden prototypes on certain builtin prototype objects
        such as String.prototype to emulate JSC's behavior of restoring
        the original function when deleting functions from those prototype
        objects.

        Fixed crash bug in the register allocator.


2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872
2009-05-04: Version 1.2.2

        Fixed bug in array sorting for sparse arrays (issue 326).

        Added support for adding a soname when building a shared library
        on Linux (issue 151).

        Fixed bug caused by morphing internal ASCII strings to external
        two-byte strings.  Slices over ASCII strings have to forward ASCII
        checks to the underlying buffer string.

        Allowed API call-as-function handlers to be called as
        constructors.

        Fixed a crash bug where an external string was disposed but a
        slice of the external string survived as a symbol.


2873 2874 2875 2876
2009-04-27: Version 1.2.1

        Added EcmaScript 5 JSON object.

2877
        Fixed bug in preemption support on ARM.
2878 2879


2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900
2009-04-23: Version 1.2.0

        Optimized floating-point operations on ARM.

        Added a number of extensions to the debugger API.

        Changed the enumeration order for unsigned integer keys to always
        be numerical order.

        Added a "read" extension to the shell sample.

        Added support for Array.prototype.reduce and
        Array.prototype.reduceRight.

        Added an option to the SCons build to control Microsoft Visual C++
        link-time code generation.

        Fixed a number of bugs (in particular issue 315, issue 316,
        issue 317 and issue 318).


2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912
2009-04-15: Version 1.1.10

        Fixed crash bug that occurred when loading a const variable in the
        presence of eval.

        Allowed using with and eval in registered extensions in debug mode
        by fixing bogus assert.

        Fixed the source position for function returns to enable the
        debugger to break there.


2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925
2009-04-14: Version 1.1.9

        Made the stack traversal code in the profiler robust by avoiding
        to look into the heap.

        Added name inferencing for anonymous functions to facilitate
        debugging and profiling.

        Re-enabled stats timers in the developer shell (d8).

        Fixed issue 303 by avoiding to shortcut cons-symbols.


2926 2927 2928 2929
2009-04-11: Version 1.1.8

        Changed test-debug/ThreadedDebugging to be non-flaky (issue 96).

2930
        Fixed step-in handling for Function.prototype.apply and call in
2931 2932 2933 2934 2935
        the debugger (issue 269).

        Fixed v8::Object::DeleteHiddenValue to not bail out when there
        are no hidden properties.

2936
        Added workaround for crash bug, where external symbol table
2937 2938 2939 2940
        entries with deleted resources would lead to NPEs when looking
        up in the symbol table.


2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953
2009-04-07: Version 1.1.7

        Added support for easily importing additional environment
        variables into the SCons build.

        Optimized strict equality checks.

        Fixed crash in indexed setters on objects without a corresponding
        getter (issue 298).

        Re-enabled script compilation cache.


2954 2955 2956 2957 2958
2009-04-01: Version 1.1.6

        Reverted an unsafe code generator change.


2959 2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973 2974
2009-04-01: Version 1.1.5

        Fixed bug that caused function literals to not be optimized as
        much as other functions.

        Improved profiler support.

        Fixed a crash bug in connection with debugger unloading.

        Fixed a crash bug in the code generator caused by losing the
        information that a frame element was copied.

        Fixed an exception propagation bug that could cause non-null
        return values when exceptions were thrown.


2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988
2009-03-30: Version 1.1.4

        Optimized String.prototype.match.

        Improved the stack information in profiles.

        Fixed bug in ARM port making it possible to compile the runtime
        system for thumb mode again.

        Implemented a number of optimizations in the code generator.

        Fixed a number of memory leaks in tests.

        Fixed crash bug in connection with script source code and external
2989
        strings.
2990 2991


2992 2993 2994 2995 2996 2997 2998 2999 3000 3001
2009-03-24: Version 1.1.3

        Fixed assertion failures in compilation of loop conditions.

        Removed STL dependency from developer shell (d8).

        Added infrastructure for protecting the V8 heap from corruption
        caused by memory modifications from the outside.


3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028
2009-03-24: Version 1.1.2

        Improved frame merge code generated by the code generator.

        Optimized String.prototype.replace.

        Implemented __defineGetter__ and __defineSetter__ for properties
        with integer keys on non-array objects.

        Improved debugger and profiler support.

        Fixed a number of portability issues to allow compilation for
        smaller ARM devices.

        Exposed object cloning through the API.

        Implemented hidden properties.  This is used to expose an identity
        hash for objects through the API.

        Implemented restarting of regular expressions if their input
        string changes representation during preemption.

        Fixed a code generator bug that could cause assignments in loops
        to be ignored if using continue to break out of the loop (issue
        284).


3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041
2009-03-12: Version 1.1.1

        Fixed an assertion in the new compiler to take stack overflow
        exceptions into account.

        Removed exception propagation code that could cause crashes.

        Fixed minor bug in debugger line number computations.

        8-byte align the C stack on Linux and Windows to speed up floating
        point computations.


3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065
2009-03-12: Version 1.1.0

        Improved code generation infrastructure by doing simple register
        allocation and constant folding and propagation.

        Optimized regular expression matching by avoiding to create
        intermediate string arrays and by flattening nested array
        representations of RegExp data.

        Traverse a few stack frames when recording profiler samples to
        include partial call graphs in the profiling output.

        Added support for using OProfile to profile generated code.

        Added remote debugging support to the D8 developer shell.

        Optimized creation of nested literals like JSON objects.

        Fixed a bug in garbage collecting unused maps and turned it on by
        default (--collect-maps).

        Added support for running tests under Valgrind.


3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080
2009-02-27: Version 1.0.3

        Optimized double-to-integer conversions in bit operations by using
        SSE3 instructions if available.

        Optimized initialization sequences that store to multiple
        properties of the same object.

        Changed the D8 debugger frontend to use JSON messages.

        Force garbage collections when disposing contexts.

        Align code objects at 32-byte boundaries.


3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098 3099 3100
2009-02-25: Version 1.0.2

        Improved profiling support by performing simple call stack
        sampling for ticks and by fixing a bug in the logging of code
        addresses.

        Fixed a number of debugger issues.

        Optimized code that uses eval.

        Fixed a couple of bugs in the regular expression engine.

        Reduced the size of generated code for certain regular expressions.

        Removed JSCRE completely.

        Fixed issue where test could not be run if there was a dot in the
        checkout path.


3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112
2009-02-13: Version 1.0.1

        Fixed two crash-bugs in irregexp (issue 231 and 233).

        Fixed a number of minor bugs (issue 87, 227 and 228).

        Added support for morphing strings to external strings on demand
        to avoid having to create copies in the embedding code.

        Removed experimental support for external symbol callbacks.


3113 3114 3115 3116
2009-02-09: Version 1.0.0

        Fixed crash-bug in the code generation for case independent 16 bit
        backreferences.
3117

3118 3119
        Made shells more robust in the presence of string conversion
        failures (issue 224).
3120

3121 3122
        Fixed a potential infinite loop when attempting to resolve
        eval (issue 221).
3123

3124
        Miscellaneous fixes to the new regular expression engine.
3125

3126 3127 3128 3129
        Reduced binary by stripping unneeded text from JavaScript library and
        minifying some JavaScript files.


3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147
2009-01-27: Version 0.4.9

        Enabled new regular expression engine.

        Made a number of changes to the debugger protocol.

        Fixed a number of bugs in the preemption support.

        Added -p option to the developer shell to run files in parallel
        using preemption.

        Fixed a number of minor bugs (including issues 176, 187, 189, 192,
        193, 198 and 201).

        Fixed a number of bugs in the serialization/deserialization
        support for the ARM platform.


3148 3149 3150 3151 3152
2009-01-19: Version 0.4.8.1

        Minor patch to debugger support.


3153 3154 3155 3156 3157 3158 3159 3160 3161
2009-01-16: Version 0.4.8

        Fixed string length bug on ARM (issue 171).

        Made most methods in the API const.

        Optimized object literals by improving data locality.

        Fixed bug that caused incomplete functions to be cached in case of
3162
        stack overflow exceptions.
3163 3164

        Fixed bugs that caused catch variables and variables introduced by
3165 3166
        eval to behave incorrectly when using accessors (issues 186, 190
        and 191).
3167 3168


3169 3170
2009-01-06: Version 0.4.7

3171
        Minor bugfixes and optimizations.
3172

3173
        Added command line debugger to D8 shell.
3174

3175 3176 3177 3178 3179
        Fixed subtle bug that caused the wrong 'this' to be used when
        calling a caught function in a catch clause.

        Inline array loads within loops directly in the code instead of
        always calling a stub.
3180 3181


3182 3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3202
2008-12-11: Version 0.4.6

        Fixed exception reporting bug where certain exceptions were
        incorrectly reported as uncaught.

        Improved the memory allocation strategy used during compilation to
        make running out of memory when compiling huge scripts less
        likely.

        Optimized String.replace by avoiding the construction of certain
        sub strings.

        Fixed bug in code generation for large switch statements on ARM.

        Fixed bug that caused V8 to change the global object template
        passed in by the user.

        Changed the API for creating object groups used during garbage
        collection.  Entire object groups are now passed to V8 instead of
        individual members of the groups.

3203

3204
2008-12-03: Version 0.4.5
3205

3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221
        Added experimental API support for allocating V8 symbols as
        external strings.

        Fixed bugs in debugging support on ARM.

        Changed eval implementation to correctly detect whether or not a
        call to eval is aliased.

        Fixed bug caused by a combination of the compilation cache and
        dictionary probing in native code.  The bug caused us to sometimes
        call functions that had not yet been compiled.

        Added platform support for FreeBSD.

        Added support for building V8 on Windows with either the shared or
        static version of MSVCRT
3222

3223 3224 3225
        Added the v8::jscre namespace around the jscre functions to avoid
        link errors (duplicate symbols) when building Google Chrome.

3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240
        Added support for calling a JavaScript function with the current
        debugger execution context as its argument to the debugger
        interface.

        Changed the type of names of counters from wchar_t to char.

        Changed the Windows system call used to compute daylight savings
        time.  The system call that we used to use became four times
        slower on WinXP SP3.

        Added support in the d8 developer shell for memory-mapped counters
        and added a stats-viewer tool.

        Fixed bug in upper/lower case mappings (issue 149).

3241

3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264
2008-11-17: Version 0.4.4

        Reduced code size by using shorter instruction encoding when
        possible.

        Added a --help option to the shell sample and to the d8 shell.

        Added visual studio project files for building the ARM simulator.

        Fixed a number of ARM simulator issues.

        Fixed bug in out-of-memory handling on ARM.

        Implemented shell support for passing arguments to a script from
        the command line.

        Fixed bug in date code that made certain date functions return -0
        instead of 0 for dates before the epoch.

        Restricted applications of eval so it can only be used in the
        context of the associated global object.

        Treat byte-order marks as whitespace characters.
3265 3266


3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279 3280 3281
2008-11-04: Version 0.4.3

        Added support for API accessors that prohibit overwriting by
        accessors defined in JavaScript code by using __defineGetter__ and
        __defineSetter__.

        Improved handling of conditionals in test status files.

        Introduced access control in propertyIsEnumerable.

        Improved performance of some string operations by caching
        information about the type of the string between operations.

        Fixed bug in fast-case code for switch statements that only have
        integer labels.
3282

3283

3284 3285 3286 3287 3288 3289 3290 3291 3292 3293 3294 3295 3296 3297 3298 3299 3300
2008-10-30: Version 0.4.2

        Improved performance of Array.prototype.concat by moving the
        implementation to C++ (issue 123).

        Fixed heap growth policy to avoid growing old space to its maximum
        capacity before doing a garbage collection and fixed issue that
        would lead to artificial out of memory situations (issue 129).

        Fixed Date.prototype.toLocaleDateString to return the date in the
        same format as WebKit.

        Added missing initialization checks to debugger API.

        Added removing of unused maps during GC.


3301 3302 3303 3304 3305 3306 3307 3308 3309 3310 3311 3312 3313
2008-10-28: Version 0.4.1

        Added caching of RegExp data in compilation cache.

        Added Visual Studio project file for d8 shell.

        Fixed function call performance regression introduced in version
        0.4.0 when splitting the global object in two parts (issue 120).

        Fixed issue 131 by checking for empty handles before throwing and
        reporting exceptions.


3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330
2008-10-23: Version 0.4.0

        Split the global object into two parts: The state holding global
        object and the global object proxy.

        Fixed bug that affected the value of an assignment to an element
        in certain cases (issue 116).

        Added GetPropertyNames functionality (issue 33) and extra Date
        functions (issue 77) to the API.

        Changed WeakReferenceCallback to take a Persistent<Value> instead
        of a Persistent<Object> (issue 101).

        Fixed issues with message reporting for exceptions in try-finally
        blocks (issues 73 and 75).

3331
        Optimized flattening of strings and string equality checking.
3332 3333 3334 3335 3336 3337 3338 3339 3340 3341

        Improved Boyer-Moore implementation for faster indexOf operations.

        Added development shell (d8) which includes counters and
        completion support.

        Fixed problem with the receiver passed to functions called from
        eval (issue 124).


3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370
2008-10-16: Version 0.3.5

        Improved string hash-code distribution by excluding bit-field bits
        from the hash-code.

        Changed string search algorithm used in indexOf from KMP to
        Boyer-Moore.

        Improved the generated code for the instanceof operator.

        Improved performance of slow-case string equality checks by
        specializing the code based on the string representation.

        Improve the handling of out-of-memory situations (issue 70).

        Improved performance of strict equality checks.

        Improved profiler output to make it easier to see anonymous
        functions.

        Improved performance of slow-case keyed loads.

        Improved property access performance by allocating a number of
        properties in the front object.

        Changed the toString behavior on the built-in object constructors
        to print [native code] instead of the actual source.  Some web
        applications do not like constructors with complex toString
        results.
3371

3372

3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392 3393 3394 3395 3396 3397
2008-10-06: Version 0.3.4

        Changed Array.prototype.sort to use quick sort.

        Fixed code generation issue where leaving a finally block with
        break or continue would accumulate elements on the expression
        stack (issue 86).

        Made sure that the name accessor on functions returns the expected
        names for builtin JavaScript functions and C++ callback functions.

        Added fast case code for extending the property storage array of
        JavaScript objects.

        Ported switch statement optimizations introduced in version 0.3.3
        to the ARM code generator.

        Allowed GCC to use strict-aliasing rules when compiling.

        Improved performance of arguments object allocation by taking care
        of arguments adaptor frames in the generated code.

        Updated the V8 benchmark suite to version 2.


3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419
2008-09-25: Version 0.3.3

        Improved handling of relocation information to enable more
        peep-hole optimizations.

        Optimized switch statements where all labels are constant small
        integers.

        Optimized String.prototype.indexOf for common cases.

        Fixed more build issues (issue 80).

        Fixed a couple of profiler issues.

        Fixed bug where the body of a function created using the Function
        constructor was not allowed to end with a single-line comment
        (issue 85).

        Improved handling of object literals by canonicalizing object
        literal maps.  This will allow JSON objects with the same set of
        properties to share the same map making inline caching work better
        for JSON objects.
3420

3421

3422 3423 3424 3425 3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448 3449
2008-09-17: Version 0.3.2

        Generalized the EvalCache into a CompilationCache and enabled it
        for scripts too.  The current strategy is to retire all entries
        whenever a mark-sweep collection is started.

        Fixed bug where switch statements containing only a default case
        would lead to an unbalanced stack (issue 69).

        Fixed bug that made access to the function in a named function
        expression impossible in certain situations (issue 24).

        Fixed even more build issues.

        Optimized calling conventions on ARM.  The conventions on ARM and
        IA-32 now match.

        Removed static initializers for flags and counters.

        Improved inline caching behavior for uncommon cases where lazily
        loading Date and RegExp code could force certain code paths go
        megamorphic.

        Removed arguments adaption for builtins written in C++.  This
        makes Array.prototype.push and Array.prototype.pop slightly
        faster.


3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492
2008-09-11: Version 0.3.1

        Fixed a number of build issues.

        Fixed problem with missing I-cache flusing on ARM.

        Changed space layout in memory management by splitting up
        code space into old data space and code space.

        Added utf-8 conversion support to the API (issue 57).

        Optimized repeated calls to eval with the same strings.  These
        repeated calls are common in web applications.

        Added Xcode project file.

        Optimized a couple of Array operation.

        Fixed parser bug by checking for end-of-string when parsing break
        and continue (issue 35).

        Fixed problem where asian characters were not categorized as
        letters.

        Fixed bug that disallowed calling functions fetched from an array
        using a string as an array index (issue 32).

        Fixed bug where the internal field count on object templates were
        sometimes ignored (issue 54).

        Added -f option to the shell sample for compatibility with other
        engines (issue 18).

        Added source info to TryCatches in the API.

        Fixed problem where the seed for the random number generator was
        clipped in a double to unsigned int conversion.

        Fixed bug where cons string symbols were sometimes converted to
        non-symbol flat strings during GC.

        Fixed bug in error reporting when attempting to convert null to an
        object.
3493 3494


3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510
2008-09-04: Version 0.3.0

        Added support for running tests on the ARM simulator.

        Fixed bug in the 'in' operator where negative indices were not
        treated correctly.

        Fixed build issues on gcc-4.3.1.

        Changed Date.prototype.toLocaleTimeString to not print the
        timezone part of the time.

        Renamed debug.h to v8-debug.h to reduce the risk of name conflicts
        with user code.


3511 3512 3513 3514 3515 3516 3517 3518 3519 3520 3521 3522 3523 3524 3525 3526
2008-09-02: Version 0.2.5

        Renamed the top level directory 'public' to 'include'.

        Added 'env' option to the SCons build scripts to support
        overriding the ENV part of the build environment.  This is mostly
        to support Windows builds in cases where SCons cannot find the
        correct paths to the Windows SDK, as these paths cannot be passed
        through shell environment variables.

        Enabled "Buffer Security Check" on for the Windows SCons build and
        added the linker option /OPT:ICF as an optimization.

        Added the V8 benchmark suite to the repository.


3527 3528 3529 3530 3531 3532 3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559
2008-09-01: Version 0.2.4

        Included mjsunit JavaScript test suite and C++ unit tests.

        Changed the shell sample to not print the result of executing a
        script provided on the command line.

        Fixed issue when building samples on Windows using a shared V8
        library.  Added visibility option on Linux build which makes the
        generated library 18% smaller.

        Changed build system to accept multiple build modes in one build
        and generate separate objects, libraries and executables for each
        mode.

        Removed deferred negation optimization (a * -b => -(a * b)) since
        this visibly changes operand conversion order.

        Improved parsing performance by introducing stack guard in
        preparsing.  Without a stack guard preparsing always bails out
        with stack overflow.

        Changed shell sample to take flags directly from the command-line.
        Added API call that implements this.

        Added load, quit and version functions to the shell sample so it's
        easier to run benchmarks and tests.

        Fixed issue with building samples and cctests on 64-bit machines.

        Fixed bug in the runtime system where the prototype chain was not
        always searched for a setter when setting a property that does not
        exist locally.
3560

3561

3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576
2008-08-14: Version 0.2.3

        Improved performance of garbage collection by moving the
        function that updates pointers during compacting collection
        into the updating visitor.  This gives the compiler a better
        chance to inline and avoid a function call per (potential)
        pointer.

        Extended the shell sample with a --runtime-flags option.

        Added Visual Studio project files for the shell.cc and
        process.cc samples.


2008-08-13: Version 0.2.2
3577 3578 3579 3580 3581 3582 3583 3584 3585 3586 3587 3588 3589 3590 3591 3592 3593

        Improved performance of garbage collection by changing the way
        we use the marking stack in the event of stack overflow during
        full garbage collection and by changing the way we mark roots.

        Cleaned up ARM version by removing top of stack caching and by
        introducing push/pop elimination.

        Cleaned up the way runtime functions are called to allow
        runtime calls with no arguments.

        Changed Windows build options to make sure that exceptions are
        disabled and that optimization flags are enabled.

        Added first version of Visual Studio project files.


3594
2008-08-06: Version 0.2.1
3595 3596 3597 3598 3599 3600 3601 3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612 3613 3614

        Improved performance of unary addition by avoiding runtime calls.

        Fixed the handling of '>' and '<=' to use right-to-left conversion
        and left-to-right evaluation as specified by ECMA-262.

        Fixed a branch elimination bug on the ARM platform where incorrect
        code was generated because of overly aggressive branch
        elimination.

        Improved performance of code that repeatedly assigns the same
        function to the same property of different objects with the same
        map.

        Untangled DEBUG and ENABLE_DISASSEMBLER defines.  The disassembler
        no longer expects DEBUG to be defined.

        Added platform-nullos.cc to serve as the basis for new platform
        implementations.

3615

3616
2008-07-30: Version 0.2.0
3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643 3644 3645 3646 3647 3648 3649 3650 3651 3652

        Changed all text files to have native svn:eol-style.

        Added a few samples and support for building them. The samples
        include a simple shell that can be used to benchmark and test V8.

        Changed V8::GetVersion to return the version as a string.

        Added source for lazily loaded scripts to snapshots and made
        serialization non-destructive.

        Improved ARM support by fixing the write barrier code to use
        aligned loads and stores and by removing premature locals
        optimization that relied on broken support for callee-saved
        registers (removed).

        Refactored the code for marking live objects during garbage
        collection and the code for allocating objects in paged
        spaces. Introduced an abstraction for the map word of a heap-
        allocated object and changed the memory allocator to allocate
        executable memory only for spaces that may contain code objects.

        Moved StringBuilder to utils.h and ScopedLock to platform.h, where
        they can be used by debugging and logging modules. Added
        thread-safe message queues for dealing with debugger events.

        Fixed the source code reported by toString for certain builtin
        empty functions and made sure that the prototype property of a
        function is enumerable.

        Improved performance of converting values to condition flags in
        generated code.

        Merged disassembler-{arch} files.


3653
2008-07-28: Version 0.1.4
3654 3655 3656 3657 3658 3659 3660

        Added support for storing JavaScript stack traces in a stack
        allocated buffer to make it visible in shallow core dumps.
        Controlled by the --preallocate-message-memory flag which is
        disabled by default.


3661
2008-07-25: Version 0.1.3
3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678 3679 3680

        Fixed bug in JSObject::GetPropertyAttributePostInterceptor where
        map transitions would count as properties.

        Allowed aliased eval invocations by treating them as evals in the
        global context. This may change in the future.

        Added support for accessing the last entered context through the
        API and renamed Context::Current to Context::GetCurrent and
        Context::GetSecurityContext to Context::GetCurrentSecurityContext.

        Fixed bug in the debugger that would cause the debugger scripts to
        be recursively loaded and changed all disabling of interrupts to
        be block-structured.

        Made snapshot data read-only to allow it to be more easily shared
        across multiple users of V8 when linked as a shared library.


3681
2008-07-16: Version 0.1.2
3682 3683 3684 3685 3686 3687 3688 3689 3690 3691 3692 3693 3694 3695 3696

        Fixed building on Mac OS X by recognizing i386 and friends as
        IA-32 platforms.

        Added propagation of stack overflow exceptions that occur while
        compiling nested functions.

        Improved debugger with support for recursive break points and
        handling of exceptions that occur in the debugger JavaScript code.

        Renamed GetInternal to GetInternalField and SetInternal to
        SetInternalField in the API and moved InternalFieldCount and
        SetInternalFieldCount from FunctionTemplate to ObjectTemplate.


3697
2008-07-09: Version 0.1.1
3698 3699 3700 3701 3702 3703 3704 3705 3706 3707 3708 3709 3710 3711 3712

        Fixed bug in stack overflow check code for IA-32 targets where a
        non-tagged value in register eax was pushed to the stack.

        Fixed potential quadratic behavior when converting strings to
        numbers.

        Fixed bug where the return value from Object::SetProperty could
        end up being the property holder instead of the written value.

        Improved debugger support by allowing nested break points and by
        dealing with stack-overflows when compiling functions before
        setting break points in them.


3713
2008-07-03: Version 0.1.0
3714

3715
        Initial export.
3716

3717 3718 3719
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