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ChangeLog
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ChangeLog
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2012-07-24: Version 3.12.15
Added PRESERVE_ASCII_NULL option to String::WriteAscii.
(issue 2252)
Added dependency to HLoadKeyed* instructions to prevent invalid
hoisting. (Chromium issue 137768)
Enabled building d8 for Android on Mac.
Interpret negative hexadecimal literals as NaN.
(issue 2240)
Expose counters in javascript when using --track-gc-object-stats.
Enabled building and testing V8 on Android IA.
Added --trace-parse flag to parser.
Performance and stability improvements on all platforms.
2012-07-18: Version 3.12.14
Deactivated optimization of packed arrays.
(Chromium issue 137768)
Fixed broken accessor transition.
(Chromium issue 137689)
Performance and stability improvements on all platforms.
2012-07-17: Version 3.12.13
Fixed missing tagging of stack value in finally block.
(Chromium issue 137496)
Added more support for heap analysis.
Performance and stability improvements on all platforms.
2012-07-16: Version 3.12.12
Added an option to the tickprocessor to specify the directory for lib
lookup.
Fixed ICs for slow objects with native accessor (Chromium issue 137002).
Fixed transcendental cache on ARM in optimized code (issue 2234).
New heap inspection tools: counters for object sizes and counts,
histograms for external fragmentation.
Incorporated constness into inferred interfaces (in preparation for
handling imports) (issue 1569).
Performance and stability improvements on all platforms.
2012-07-12: Version 3.12.11
Renamed "mips" arch to "mipsel" in the GYP build.
Fixed computation of call targets on prototypes in Crankshaft.
(Chromium issue 125148)
Removed use of __lookupGetter__ when generating stack trace.
(issue 1591)
Turned on ES 5.2 globals semantics by default.
(issue 1991, Chromium issue 80591)
Synced preparser and parser wrt syntax error in switch..case.
(issue 2210)
Fixed reporting of octal literals in strict mode when preparsing.
(issue 2220)
Fixed inline constructors for Harmony Proxy prototypes.
(issue 2225)
Performance and stability improvements on all platforms.
2012-07-10: Version 3.12.10
Re-enabled and fixed issue with array bounds check elimination
(Chromium issue 132114).
Fixed Debug::Break crash. (Chromium issue 131642)
Added optimizing compiler support for JavaScript getters.
Performance and stability improvements on all platforms.
2012-07-06: Version 3.12.9
Correctly advance the scanner when scanning unicode regexp flag.
(Chromium issue 136084)
Fixed unhandlified code calling Harmony Proxy traps.
(issue 2219)
Performance and stability improvements on all platforms.
2012-07-05: Version 3.12.8
Implemented TypedArray.set and ArrayBuffer.slice in d8.
Performance and stability improvements on all platforms.
2012-07-03: Version 3.12.7
Fixed lazy compilation for strict eval scopes.
(Chromium issue 135066)
Made MACOSX_DEPLOYMENT_TARGET configurable in GYP.
(issue 2151)
Report "hidden properties" in heap profiler for properties case.
(issue 2212)
Activated optimization of packed arrays by default.
Performance and stability improvements on all platforms.
2012-06-29: Version 3.12.6
Cleaned up hardfp ABI detection for ARM (V8 issue 2140).
Extended TypedArray support in d8.
2012-06-28: Version 3.12.5
Fixed lazy parsing heuristics to respect outer scope.
(Chromium issue 135008)
Allow using test-wrapper-gypbuild.py on Windows when no python
interpreter is registered.
Performance and stability improvements on all platforms.
2012-06-27: Version 3.12.4
Removed -fomit-frame-pointer flag from Release builds to make
the stack walkable by TCMalloc (Chromium issue 133723).
Ported r7868 (constant masking) to x64 (issue 1374).
Expose more detailed memory statistics (issue 2201).
Fixed Harmony Maps and WeakMaps for undefined values
(Chromium issue 132744).
Correctly throw reference error in strict mode with ICs disabled
(issue 2119).
Performance and stability improvements on all platforms.
2012-06-25: Version 3.12.3
Reverted r11835 'Unify promotion and allocation limit computation' due
to V8 Splay performance regression on Mac. (Chromium issue 134183)
Fixed sharing of literal boilerplates for optimized code. (issue 2193)
Performance and stability improvements on all platforms.
2012-06-22: Version 3.12.2
Made near-jump check more strict in LoadNamedFieldPolymorphic on
ia32/x64. (Chromium issue 134055)
Fixed lazy sweeping heuristics to prevent old-space expansion.
(issue 2194)
Performance and stability improvements on all platforms.
2012-06-21: Version 3.12.1
Performance and stability improvements on all platforms.
2012-06-20: Version 3.12.0
Fixed Chromium issues:
115100, 129628, 131994, 132727, 132741, 132742, 133211
Fixed V8 issues:
915, 1914, 2034, 2087, 2094, 2134, 2156, 2166, 2172, 2177, 2179, 2185
Added --extra-code flag to mksnapshot to load JS code into the VM
before creating the snapshot.
Support 'restart call frame' command in the debugger.
Performance and stability improvements on all platforms.
2012-06-13: Version 3.11.10
Implemented heap profiler memory usage reporting.
Preserved error message during finally block in try..finally.
(Chromium issue 129171)
Fixed EnsureCanContainElements to properly handle double values.
(issue 2170)
Improved heuristics to keep objects in fast mode with inherited
constructors.
Performance and stability improvements on all platforms.
2012-06-06: Version 3.11.9
Implemented ES5-conformant semantics for inherited setters and read-only
properties. Currently behind --es5_readonly flag, because it breaks
WebKit bindings.
Exposed last seen heap object id via v8 public api.
Performance and stability improvements on all platforms.
2012-05-31: Version 3.11.8
Avoid overdeep recursion in regexp where a guarded expression with a
minimum repetition count is inside another quantifier.
(Chromium issue 129926)
Fixed missing write barrier in store field stub.
(issues 2143, 1465, Chromium issue 129355)
Proxies: Fixed receiver for setters inherited from proxies.
Proxies: Fixed ToStringArray function so that it does not reject some
keys.
(issue 1543)
Performance and stability improvements on all platforms.
2012-05-29: Version 3.11.7
Get better function names in stack traces.
Performance and stability improvements on all platforms.
2012-05-24: Version 3.11.6
Fixed RegExp.prototype.toString for incompatible receivers
(issue 1981).
Performance and stability improvements on all platforms.
2012-05-23: Version 3.11.5
Performance and stability improvements on all platforms.
2012-05-22: Version 3.11.4
Some cleanup to common.gypi. This fixes some host/target combinations
that weren't working in the Make build on Mac.
Handle EINTR in socket functions and continue incomplete sends.
(issue 2098)
Fixed python deprecations. (issue 1391)
Made socket send and receive more robust and return 0 on failure.
(Chromium issue 15719)
Fixed GCC 4.7 (C++11) compilation. (issue 2136)
Set '-m32' option for host and target platforms
Performance and stability improvements on all platforms.
2012-05-18: Version 3.11.3
Disable optimization for functions that have scopes that cannot be
reconstructed from the context chain. (issue 2071)
Define V8_EXPORT to nothing for clients of v8. (Chromium issue 90078)
Correctly check for native error objects. (Chromium issue 2138)
Performance and stability improvements on all platforms.
2012-05-16: Version 3.11.2
Revert r11496. (Chromium issue 128146)
Implement map collection for incremental marking. (issue 1465)
Add toString method to CallSite (which describes a frame of the
stack trace).
2012-05-15: Version 3.11.1
Added a readbuffer function to d8 that reads a file into an ArrayBuffer.
Fix freebsd build. (V8 issue 2126)
Performance and stability improvements on all platforms.
2012-05-11: Version 3.11.0
Fixed compose-discard crasher from r11524 (issue 2123).
Activated new global semantics by default. Global variables can
now shadow properties of the global object (ES5.1 erratum).
Properly set ElementsKind of empty FAST_DOUBLE_ELEMENTS arrays when
transitioning (Chromium issue 117409).
Made Error.prototype.name writable again, as required by the spec and
the web (Chromium issue 69187).
Implemented map collection with incremental marking (issue 1465).
Regexp: Fixed overflow in min-match-length calculation
(Chromium issue 126412).
MIPS: Fixed illegal instruction use on Loongson in code for
Math.random() (issue 2115).
Fixed crash bug in VisitChoice (Chromium issue 126272).
Fixed unsigned-Smi check in MappedArgumentsLookup
(Chromium issue 126414).
Fixed LiveEdit for function with no locals (issue 825).
Fixed register clobbering in LoadIC for interceptors
(Chromium issue 125988).
Implemented clearing of CompareICs (issue 2102).
Performance and stability improvements on all platforms.
2012-05-03: Version 3.10.8
Enabled MIPS cross-compilation.
Ensured reload of elements pointer in StoreFastDoubleElement stub.
(Chromium issue 125515)
Fixed corner cases in truncation behavior when storing to
TypedArrays. (issue 2110)
Fixed failure to properly recognize and report out-of-memory
conditions when allocating code space pages. (Chromium issue
118625)
Fixed idle notifications to perform a round of incremental GCs
after context disposal. (issue 2107)
Fixed preparser for try statement. (issue 2109)
Performance and stability improvements on all platforms.
2012-04-30: Version 3.10.7
Performance and stability improvements on all platforms.
2012-04-26: Version 3.10.6
Fixed some bugs in accessing details of the last regexp match.
Fixed source property of empty RegExp objects. (issue 1982)
Enabled inlining some V8 API functions.
Performance and stability improvements on all platforms.
2012-04-23: Version 3.10.5
Put new global var semantics behind a flag until WebKit tests are
cleaned up.
Enabled stepping into callback passed to builtins.
(Chromium issue 109564)
Performance and stability improvements on all platforms.
2012-04-19: Version 3.10.4
Fixed issues when stressing compaction with WeakMaps.
Fixed missing GVN flag for new-space promotion. (Chromium issue 123919)
Simplify invocation sequence at monomorphic function invocation sites.
(issue 2079)
Performance and stability improvements on all platforms.
2012-04-17: Version 3.10.3
Fixed several bugs in heap profiles (including issue 2078).
Throw syntax errors on illegal escape sequences.
Implemented rudimentary module linking (behind --harmony flag)
Implemented ES5 erratum: Global declarations should shadow
inherited properties.
Made handling of const more consistent when combined with 'eval'
and 'with'.
Fixed V8 on MinGW-x64 (issue 2026).
Performance and stability improvements on all platforms.
2012-04-13: Version 3.10.2
Fixed native ARM build (issues 1744, 539)
Return LOOKUP variable instead of CONTEXT for non-context allocated
outer scope parameters (Chromium issue 119609).
Fixed regular and ElementsKind transitions interfering with each other
(Chromium issue 122271).
Improved performance of keyed loads/stores which have a HeapNumber
index (issues 1388, 1295).
Fixed WeakMap processing for evacuation candidates (issue 2060).
Bailout on possible direct eval calls (Chromium issue 122681).
Do not assume that names of function expressions are context-allocated
(issue 2051).
Performance and stability improvements on all platforms.
2012-04-10: Version 3.10.1
Fixed bug with arguments object in inlined functions (issue 2045).
Fixed performance bug with lazy initialization (Chromium issue
118686).
Added suppport for Mac OS X 64bit builds with GYP.
(Patch contributed by Filipe David Manana <fdmanana@gmail.com>)
Fixed bug with hidden properties (issue 2034).
Fixed a performance bug when reloading pages (Chromium issue 117767,
V8 issue 1902).
Fixed bug when optimizing throw in top-level code (issue 2054).
Fixed two bugs with array literals (issue 2055, Chromium issue 121407).
Fixed bug with Math.min/Math.max with NaN inputs (issue 2056).
Fixed a bug with the new runtime profiler (Chromium issue 121147).
Fixed compilation of V8 using uClibc.
Optimized boot-up memory use.
Optimized regular expressions.
2012-03-30: Version 3.10.0
Fixed store IC writability check in strict mode
(Chromium issue 120099).
Resynchronize timers if the Windows system time was changed.
(Chromium issue 119815)
Removed "-mfloat-abi=hard" from host compiler cflags when building for
hardfp ARM
(https://code.google.com/p/chrome-os-partner/issues/detail?id=8539)
Fixed edge case for case independent regexp character classes
(issue 2032).
Reset function info counters after context disposal.
(Chromium issue 117767, V8 issue 1902)
Fixed missing write barrier in CopyObjectToObjectElements.
(Chromium issue 119926)
Fixed missing bounds check in HasElementImpl.
(Chromium issue 119925)
Performance and stability improvements on all platforms.
2012-03-23: Version 3.9.24
Activated count-based profiler for ARM.
Fixed use of proxies as f.prototype properties. (issue 2021)
Enabled snapshots on MIPS.
Performance and stability improvements on all platforms.
2012-03-21: Version 3.9.23
Use correct arguments adaptation environment when inlining function
containing arguments. (Issue 2014)
Performance and stability improvements on all platforms.
2012-03-20: Version 3.9.22
Enabled count-based profiler by default.
Implemented a hash based look-up to speed up address checks
in large object space (issue 853).
Performance and stability improvements on all platforms.
2012-03-19: Version 3.9.21
Fixed push-to-trunk script (and re-push).
Added API call that identifies strings that are guaranteed only to
contain ASCII characters.
2012-03-19: Version 3.9.20
Fixed declarations escaping global strict eval. (Issue 1624)
Fixed wrapping of receiver for non-strict callbacks. (Issue 1973)
Fixed function declarations overwriting read-only global properties.
(Chromium issue 115452)
Fixed --use-strict flag in combination with --harmony[-scoping].
Debugger: naive implementation of "step into Function.prototype.bind".
Debugger: added ability to set script source from within OnBeforeCompile
Added flag to always call DebugBreak on abort.
Re-enabled constructor inlining and inline === comparison with boolean
constants. (Issue 2009)
Don't use an explicit s0 in ClampDoubleToUint8. (Issue 2004)
Performance and stability improvements on all platforms.
2012-03-14: Version 3.9.19
Ensure there is a smi check of the receiver for global load and call
ICs (Chromium issue 117794).
Performance and stability improvements on all platforms.
2012-03-13: Version 3.9.18
Ensure consistency of Math.sqrt on Intel platforms.
Remove static initializers in v8. (issue 1859)
Add explicit dependency on v8_base in the GYP-based build.
Performance and stability improvements on all platforms.
2012-03-12: Version 3.9.17
Fixed VFP detection through compiler defines. (issue 1996)
Add Code-related fields to postmortem metadata.
Performance and stability improvements on all platforms.
2012-03-09: Version 3.9.16
Added basic interface inference for modules (behind the --harmony flag).
Added Object.is, Number.isFinite, Number.isNaN.
Updated the Unicode tables to Unicode version 6.1.0.
Performance and stability improvements on all platforms.
2012-03-06: Version 3.9.15
Fix the heap profiler crash caused by memory layout changes between
passes.
Fix Error.prototype.toString to throw TypeError. (issue 1980)
Fix double-rounding in strtod for MinGW. (issue 1062)
Fix corrupted snapshot serializaton on ia32. (Chromium issue v8/1985)
Performance and stability improvements on all platforms.
2012-03-01: Version 3.9.14
Performance and stability improvements on all platforms.
2012-02-29: Version 3.9.13
Added code kind check before preparing for OSR. (issue 1900, 115073)
Fixed issue 1802: Pass zone explicitly to zone-allocation on x64 and
ARM.
Ported string construct stub to x64. (issue 849)
Performance and stability improvements on all platforms.
2012-02-28: Version 3.9.12
Fixed the negative lookup stub to handle deleted entries in a
dictionary. (issue 1964)
Added a new API where the host can supply a callback function. The
callback function can resolve the location of a return address on stack
to the location where a return-address rewriting profiler stashed the
original return address.
Fixed Chromium issue http://crbug.com/115646: When compiling for-in
pass correct context value to the increment instruction.
Fixed issue 1853: Update breakpoints set with partial file name after
compile.
2012-02-27: Version 3.9.11
Made 'module' a context-sensitive keyword (V8 issue 1957).
2012-02-24: Version 3.9.10
Fixed V8 issues 1322, 1772 and 1969.
Conformance improvements.
Performance and stability improvements on all platforms.
2012-02-23: Version 3.9.9
Supported fast case for-in in Crankshaft.
Sped up heap snapshot serialization and dominators construction.
Randomized allocation addresses on windows. (Chromium issue 115151)
Fixed compilation with MinGW-w64. (issue 1943)
Fixed incorrect value of assignments to non-extensible properties.
Fixed a crash bug in generated code on ia32.
Performance and stability improvements on all platforms.
2012-02-21: Version 3.9.8
Fixed memory leak and missing #include in StartupDataDecompressor
(issue 1960).
Renamed static methods to avoid shadowing virtual methods and fix Clang
C++11 compile error.
Fixed sequence of element access in array builtins (issue 1790).
Performance and stability improvements on all platforms.
2012-02-16: Version 3.9.7
Fixed V8 issues 1322, 1878, 1942, 1945 and Chromium issue 113924.
Fixed GCC-4.7 warnings.
Added Navier-Stokes benchmark.
Performance and stability improvements on all platforms.
2012-02-14: Version 3.9.6
Fixed template-related linker error. (issue 1936)
Allowed inlining of functions containing object literals. (issue 1322)
Added --call-graph-size option to tickprocessor. (issue 1937)
Heap Snapshot maximum size limit is too low for really big apps. At the
moment the limit is 256MB. (Chromium issue 113015)
Performance and stability improvements on all platforms.
2012-02-09: Version 3.9.5
Removed unused command line flags.
Performance and stability improvements on all platforms.
2012-02-08: Version 3.9.4
Properly initialize element-transitioning array literals on ARM.
(issue 1930)
Bug fixes on all platforms.
2012-02-07: Version 3.9.3
When rethrowing an exception, print the stack trace of its original
site instead of rethrow site (Chromium issue 60240).
Increased size of small stacks from 32k to 64k to avoid hitting limits
in Chromium (Chromium issue 112843).
2012-02-06: Version 3.9.2
Added timestamp to --trace-gc output. (issue 1932)
Heap profiler reports implicit references.
Optionally export metadata with libv8 to enable debuggers to inspect V8
state.
2012-02-02: Version 3.9.1
Fixed memory leak in NativeObjectsExplorer::FindOrAddGroupInfo
(Chromium issue 112315).
Fixed a crash in dev tools (Chromium issue 107996).
Added 'dependencies_traverse': 1 to v8 GYP target.
Performance and stability improvements on all platforms.
2012-02-01: Version 3.9.0
Reduced memory use immediately after starting V8.
Stability fixes and performance improvements on all platforms.
2012-01-26: Version 3.8.9
Flush number string cache on GC (issue 1605).
Provide access to function inferred name with
v8::Function::GetInferredName in V8 public API.
Fix building with Clang (issue 1912).
Reduce the space used by the stack for the profiling thread.
Fix misleading documentation of v8::Locker (issue 542).
Introduce readbinary function in d8 to read binary files.
Performance and stability improvements on all platforms.
2012-01-23: Version 3.8.8
Limited number of loop iterations in Heap::ReserveSpace
(Chromium issue 99027).
Fixed solaris build (VirtualMemory) (issue 1761).
Fixed strict vs. non-strict handling of function proxies in
higher-order array and string methods.
Enabled asynchronous remote debugging with d8 (issue 1691).
Stability and performance improvements on all platforms.
2012-01-19: Version 3.8.7
Ensure that LRandom restores rsi after call to the C function on x64.
(Chromium issue http://crbug.com/110509)
Fixing include issues on *bsd when building with scons.
(issue 1897)
Provide a switch to specify -fno-strict-aliasing
(issue 1887)
Move WIN32 define from standalone.gypi to common.gypi
(issue 1760)
Fix corner-case in heap size estimation.
(issue 1893)
Fix and enable NEW_NON_STRICT_FAST ArgumentsAccess stub on x64.
(issue 1903)
Performance improvements and bug fixes.
2012-01-16: Version 3.8.6
Add primitive WebGL array support to d8.
Improve heap size estimation (issue 1893).
Hash collision DOS workaround extended from string keys
to numeric keys.
Provide an API for iterating through all external strings referenced
from the JS heap.
Adjust position recorded for call expressions. http://crbug.com/109195
Fix GC crash related to instanceof. http://crbug.com/109448
Performance improvements and bug fixes.
2012-01-05: Version 3.8.5
Fix broken test that assumes that no GC can clear the regexp cache (GC
can happen at any time due to Crankshaft).
Fix handling of bogus receivers for Harmony collections. (issue 1884)
Add netbsd support to gyp build.
Determine page size at runtime on posix platforms.
Ensure that store buffer filtering hash sets are cleared after
StoreBuffer::Filter.
Randomize the seed used for string hashing. This helps guard against
CPU-eating DOS attacks against node.js servers. Based on code from
Bert Belder. This version only solves the issue for those that compile
V8 themselves or those that do not use snapshots. A snapshot-based
precompiled V8 will still have predictable string hash codes.
Implement callback when script finishes running in V8 API.
Improve performance of Math.min and Math.max for the case of two
arguments. (issue 1325)
2012-01-02: Version 3.8.4
Performance improvements for large Smi-only arrays.
Fixed InternalArrays construction. (issue 1878)
2011-12-27: Version 3.8.3
Avoid embedding new space objects into code objects in the lithium gap
resolver. (chromium:108296)
Bug fixes and performance optimizations on all platforms.
2011-12-21: Version 3.8.2
Add max optimization flag to v8 gyp build to ensure V8 is always built
fully optimized in Chrome.
MIPS: Bring MIPS to parity with other platforms.
Optimizations and stability improvements on all platforms.
2011-12-19: Version 3.8.1
Fixed GCC 4.7 warnings. Patch from Tobias Burnus.
Stability improvements on all platforms.
2011-12-13: Version 3.8.0
Fixed handling of arrays in DefineOwnProperty. (issue 1756)
Sync parser and preparser on do-while and return statements.
(issue 1856)
Fixed another corner case for DefineOwnProperty on arrays (issue 1756).
Stability and performance improvements on all platforms.
2011-12-01: Version 3.7.12
Increase tick interval for the android platform.
Fix a bug in the register allocator. (chromium:105112)
Fix handling of recompiling code. (chromium:105375, v8:1782)
Start incremental marking on idle notification. (v8:1458)
Build fixes for various platforms.
Various performance improvements.
2011-11-29: Version 3.7.11
Fixed bug when generating padding to ensure space for lazy
deoptimization.
(issue 1846)
Further reduced pause times due to GC.
Stability and performance improvements on all platforms.
2011-11-23: Version 3.7.10
Set maximum length of FixedArray in terms of elements instead an
absolute number of bytes.
(Chromium issue 103103)
Stability and performance improvements on all platforms.
2011-11-21: Version 3.7.9
Removed exit-time destructors.
Stability and performance improvements on all platforms.
2011-11-17: Version 3.7.8
Removed hidden prototype from builtins, i.e., deleting an overridden
function on builtins will not make the original function reappear.
Added NetBSD support for scons build.
Performance improvements on all platforms.
2011-11-14: Version 3.7.7
Fix missing fast property accessors in heap snapshots.
(issue 1818)
2011-11-11: Version 3.7.6
Fixed filtering of store buffer for large object pages.
(issue 1817)