1 2012-03-23: Version 3.9.24 2 3 Activated count-based profiler for ARM. 4 5 Fixed use of proxies as f.prototype properties. (issue 2021) 6 7 Enabled snapshots on MIPS. 8 9 Performance and stability improvements on all platforms. 10 11 12 2012-03-21: Version 3.9.23 13 14 Use correct arguments adaptation environment when inlining function 15 containing arguments. (Issue 2014) 16 17 Performance and stability improvements on all platforms. 18 19 20 2012-03-20: Version 3.9.22 21 22 Enabled count-based profiler by default. 23 24 Implemented a hash based look-up to speed up address checks 25 in large object space (issue 853). 26 27 Performance and stability improvements on all platforms. 28 29 30 2012-03-19: Version 3.9.21 31 32 Fixed push-to-trunk script (and re-push). 33 34 Added API call that identifies strings that are guaranteed only to 35 contain ASCII characters. 36 37 38 2012-03-19: Version 3.9.20 39 40 Fixed declarations escaping global strict eval. (Issue 1624) 41 42 Fixed wrapping of receiver for non-strict callbacks. (Issue 1973) 43 44 Fixed function declarations overwriting read-only global properties. 45 (Chromium issue 115452) 46 47 Fixed --use-strict flag in combination with --harmony[-scoping]. 48 49 Debugger: naive implementation of "step into Function.prototype.bind". 50 51 Debugger: added ability to set script source from within OnBeforeCompile 52 53 Added flag to always call DebugBreak on abort. 54 55 Re-enabled constructor inlining and inline === comparison with boolean 56 constants. (Issue 2009) 57 58 Don't use an explicit s0 in ClampDoubleToUint8. (Issue 2004) 59 60 Performance and stability improvements on all platforms. 61 62 63 2012-03-14: Version 3.9.19 64 65 Ensure there is a smi check of the receiver for global load and call 66 ICs (Chromium issue 117794). 67 68 Performance and stability improvements on all platforms. 69 70 71 2012-03-13: Version 3.9.18 72 73 Ensure consistency of Math.sqrt on Intel platforms. 74 75 Remove static initializers in v8. (issue 1859) 76 77 Add explicit dependency on v8_base in the GYP-based build. 78 79 Performance and stability improvements on all platforms. 80 81 82 2012-03-12: Version 3.9.17 83 84 Fixed VFP detection through compiler defines. (issue 1996) 85 86 Add Code-related fields to postmortem metadata. 87 88 Performance and stability improvements on all platforms. 89 90 91 2012-03-09: Version 3.9.16 92 93 Added basic interface inference for modules (behind the --harmony flag). 94 95 Added Object.is, Number.isFinite, Number.isNaN. 96 97 Updated the Unicode tables to Unicode version 6.1.0. 98 99 Performance and stability improvements on all platforms. 100 101 102 2012-03-06: Version 3.9.15 103 104 Fix the heap profiler crash caused by memory layout changes between 105 passes. 106 107 Fix Error.prototype.toString to throw TypeError. (issue 1980) 108 109 Fix double-rounding in strtod for MinGW. (issue 1062) 110 111 Fix corrupted snapshot serializaton on ia32. (Chromium issue v8/1985) 112 113 Performance and stability improvements on all platforms. 114 115 116 2012-03-01: Version 3.9.14 117 118 Performance and stability improvements on all platforms. 119 120 121 2012-02-29: Version 3.9.13 122 123 Added code kind check before preparing for OSR. (issue 1900, 115073) 124 125 Fixed issue 1802: Pass zone explicitly to zone-allocation on x64 and 126 ARM. 127 128 Ported string construct stub to x64. (issue 849) 129 130 Performance and stability improvements on all platforms. 131 132 133 2012-02-28: Version 3.9.12 134 135 Fixed the negative lookup stub to handle deleted entries in a 136 dictionary. (issue 1964) 137 138 Added a new API where the host can supply a callback function. The 139 callback function can resolve the location of a return address on stack 140 to the location where a return-address rewriting profiler stashed the 141 original return address. 142 143 Fixed Chromium issue http://crbug.com/115646: When compiling for-in 144 pass correct context value to the increment instruction. 145 146 Fixed issue 1853: Update breakpoints set with partial file name after 147 compile. 148 149 150 2012-02-27: Version 3.9.11 151 152 Made 'module' a context-sensitive keyword (V8 issue 1957). 153 154 155 2012-02-24: Version 3.9.10 156 157 Fixed V8 issues 1322, 1772 and 1969. 158 159 Conformance improvements. 160 161 Performance and stability improvements on all platforms. 162 163 164 2012-02-23: Version 3.9.9 165 166 Supported fast case for-in in Crankshaft. 167 168 Sped up heap snapshot serialization and dominators construction. 169 170 Randomized allocation addresses on windows. (Chromium issue 115151) 171 172 Fixed compilation with MinGW-w64. (issue 1943) 173 174 Fixed incorrect value of assignments to non-extensible properties. 175 176 Fixed a crash bug in generated code on ia32. 177 178 Performance and stability improvements on all platforms. 179 180 181 2012-02-21: Version 3.9.8 182 183 Fixed memory leak and missing #include in StartupDataDecompressor 184 (issue 1960). 185 186 Renamed static methods to avoid shadowing virtual methods and fix Clang 187 C++11 compile error. 188 189 Fixed sequence of element access in array builtins (issue 1790). 190 191 Performance and stability improvements on all platforms. 192 193 194 2012-02-16: Version 3.9.7 195 196 Fixed V8 issues 1322, 1878, 1942, 1945 and Chromium issue 113924. 197 198 Fixed GCC-4.7 warnings. 199 200 Added Navier-Stokes benchmark. 201 202 Performance and stability improvements on all platforms. 203 204 205 2012-02-14: Version 3.9.6 206 207 Fixed template-related linker error. (issue 1936) 208 209 Allowed inlining of functions containing object literals. (issue 1322) 210 211 Added --call-graph-size option to tickprocessor. (issue 1937) 212 213 Heap Snapshot maximum size limit is too low for really big apps. At the 214 moment the limit is 256MB. (Chromium issue 113015) 215 216 Performance and stability improvements on all platforms. 217 218 219 2012-02-09: Version 3.9.5 220 221 Removed unused command line flags. 222 223 Performance and stability improvements on all platforms. 224 225 226 2012-02-08: Version 3.9.4 227 228 Properly initialize element-transitioning array literals on ARM. 229 (issue 1930) 230 231 Bug fixes on all platforms. 232 233 234 2012-02-07: Version 3.9.3 235 236 When rethrowing an exception, print the stack trace of its original 237 site instead of rethrow site (Chromium issue 60240). 238 239 Increased size of small stacks from 32k to 64k to avoid hitting limits 240 in Chromium (Chromium issue 112843). 241 242 243 2012-02-06: Version 3.9.2 244 245 Added timestamp to --trace-gc output. (issue 1932) 246 247 Heap profiler reports implicit references. 248 249 Optionally export metadata with libv8 to enable debuggers to inspect V8 250 state. 251 252 253 2012-02-02: Version 3.9.1 254 255 Fixed memory leak in NativeObjectsExplorer::FindOrAddGroupInfo 256 (Chromium issue 112315). 257 258 Fixed a crash in dev tools (Chromium issue 107996). 259 260 Added 'dependencies_traverse': 1 to v8 GYP target. 261 262 Performance and stability improvements on all platforms. 263 264 265 2012-02-01: Version 3.9.0 266 267 Reduced memory use immediately after starting V8. 268 269 Stability fixes and performance improvements on all platforms. 270 271 272 2012-01-26: Version 3.8.9 273 274 Flush number string cache on GC (issue 1605). 275 276 Provide access to function inferred name with 277 v8::Function::GetInferredName in V8 public API. 278 279 Fix building with Clang (issue 1912). 280 281 Reduce the space used by the stack for the profiling thread. 282 283 Fix misleading documentation of v8::Locker (issue 542). 284 285 Introduce readbinary function in d8 to read binary files. 286 287 Performance and stability improvements on all platforms. 288 289 290 2012-01-23: Version 3.8.8 291 292 Limited number of loop iterations in Heap::ReserveSpace 293 (Chromium issue 99027). 294 295 Fixed solaris build (VirtualMemory) (issue 1761). 296 297 Fixed strict vs. non-strict handling of function proxies in 298 higher-order array and string methods. 299 300 Enabled asynchronous remote debugging with d8 (issue 1691). 301 302 Stability and performance improvements on all platforms. 303 304 305 2012-01-19: Version 3.8.7 306 307 Ensure that LRandom restores rsi after call to the C function on x64. 308 (Chromium issue http://crbug.com/110509) 309 310 Fixing include issues on *bsd when building with scons. 311 (issue 1897) 312 313 Provide a switch to specify -fno-strict-aliasing 314 (issue 1887) 315 316 Move WIN32 define from standalone.gypi to common.gypi 317 (issue 1760) 318 319 Fix corner-case in heap size estimation. 320 (issue 1893) 321 322 Fix and enable NEW_NON_STRICT_FAST ArgumentsAccess stub on x64. 323 (issue 1903) 324 325 Performance improvements and bug fixes. 326 327 328 2012-01-16: Version 3.8.6 329 330 Add primitive WebGL array support to d8. 331 332 Improve heap size estimation (issue 1893). 333 334 Hash collision DOS workaround extended from string keys 335 to numeric keys. 336 337 Provide an API for iterating through all external strings referenced 338 from the JS heap. 339 340 Adjust position recorded for call expressions. http://crbug.com/109195 341 342 Fix GC crash related to instanceof. http://crbug.com/109448 343 344 Performance improvements and bug fixes. 345 346 347 2012-01-05: Version 3.8.5 348 349 Fix broken test that assumes that no GC can clear the regexp cache (GC 350 can happen at any time due to Crankshaft). 351 352 Fix handling of bogus receivers for Harmony collections. (issue 1884) 353 354 Add netbsd support to gyp build. 355 356 Determine page size at runtime on posix platforms. 357 358 Ensure that store buffer filtering hash sets are cleared after 359 StoreBuffer::Filter. 360 361 Randomize the seed used for string hashing. This helps guard against 362 CPU-eating DOS attacks against node.js servers. Based on code from 363 Bert Belder. This version only solves the issue for those that compile 364 V8 themselves or those that do not use snapshots. A snapshot-based 365 precompiled V8 will still have predictable string hash codes. 366 367 Implement callback when script finishes running in V8 API. 368 369 Improve performance of Math.min and Math.max for the case of two 370 arguments. (issue 1325) 371 372 373 2012-01-02: Version 3.8.4 374 375 Performance improvements for large Smi-only arrays. 376 377 Fixed InternalArrays construction. (issue 1878) 378 379 380 2011-12-27: Version 3.8.3 381 382 Avoid embedding new space objects into code objects in the lithium gap 383 resolver. (chromium:108296) 384 385 Bug fixes and performance optimizations on all platforms. 386 387 388 2011-12-21: Version 3.8.2 389 390 Add max optimization flag to v8 gyp build to ensure V8 is always built 391 fully optimized in Chrome. 392 393 MIPS: Bring MIPS to parity with other platforms. 394 395 Optimizations and stability improvements on all platforms. 396 397 398 2011-12-19: Version 3.8.1 399 400 Fixed GCC 4.7 warnings. Patch from Tobias Burnus. 401 402 Stability improvements on all platforms. 403 404 405 2011-12-13: Version 3.8.0 406 407 Fixed handling of arrays in DefineOwnProperty. (issue 1756) 408 409 Sync parser and preparser on do-while and return statements. 410 (issue 1856) 411 412 Fixed another corner case for DefineOwnProperty on arrays (issue 1756). 413 414 Stability and performance improvements on all platforms. 415 416 417 2011-12-01: Version 3.7.12 418 419 Increase tick interval for the android platform. 420 421 Fix a bug in the register allocator. (chromium:105112) 422 423 Fix handling of recompiling code. (chromium:105375, v8:1782) 424 425 Start incremental marking on idle notification. (v8:1458) 426 427 Build fixes for various platforms. 428 429 Various performance improvements. 430 431 432 2011-11-29: Version 3.7.11 433 434 Fixed bug when generating padding to ensure space for lazy 435 deoptimization. 436 (issue 1846) 437 438 Further reduced pause times due to GC. 439 440 Stability and performance improvements on all platforms. 441 442 443 2011-11-23: Version 3.7.10 444 445 Set maximum length of FixedArray in terms of elements instead an 446 absolute number of bytes. 447 (Chromium issue 103103) 448 449 Stability and performance improvements on all platforms. 450 451 452 2011-11-21: Version 3.7.9 453 454 Removed exit-time destructors. 455 456 Stability and performance improvements on all platforms. 457 458 459 2011-11-17: Version 3.7.8 460 461 Removed hidden prototype from builtins, i.e., deleting an overridden 462 function on builtins will not make the original function reappear. 463 464 Added NetBSD support for scons build. 465 466 Performance improvements on all platforms. 467 468 469 2011-11-14: Version 3.7.7 470 471 Fix missing fast property accessors in heap snapshots. 472 (issue 1818) 473 474 475 2011-11-11: Version 3.7.6 476 477 Fixed filtering of store buffer for large object pages. 478 (issue 1817) 479 480 Fixed generated hash function on all platforms. 481 (issue 1808) 482 483 Fixed Heap::Shrink to ensure that it does not free pages that are 484 still in use. 485 (Chromium issue 100414) 486 487 Stability and performance improvements on all platforms. 488 489 490 2011-11-10: Version 3.7.5 491 492 Added initial gyp infrastructure for MIPS. 493 494 Implemented performance improvements to the incremental garbage 495 collector. 496 497 Added optimizations and stability improvements on all platforms. 498 499 500 2011-11-07: Version 3.7.4 501 502 Proper "libv8.so.3.7.4" SONAME for Linux shared library (issue 1786). 503 504 Fix Harmony sets and maps to allow null and undefined as keys 505 (still hidden behind --harmony flag) (issue 1622). 506 507 Implement VirtualMemory on FreeBSD to fix build (issue 1807). 508 509 Enable VFP instructions for Android. 510 511 Fix error handling in Date.prototype.toISOString (issue 1792). 512 513 Bug fixes and performance improvements for all platforms. 514 515 Not officially supported but noteworthy: Crankshaft for MIPS :-) 516 517 518 2011-10-28: Version 3.7.3 519 520 Slight deoptimization as a workaround for issue with jslint: Issue 521 1789. 522 523 524 2011-10-27: Version 3.7.2 525 526 Fix bug in deoptimization. Known issue with jslint: Issue 1789. 527 528 529 2011-10-26: Version 3.7.1 530 531 Achieved 33% speedup in debug-mode tests. 532 533 Removed special casing of calls to RegExp test and exec methods with no 534 argument. Now matches new JSC behaviour. crbug.com/75740. 535 536 Return the empty string on cyclic references in toString (ES5 537 conformance). 538 539 Fixed bug triggered by JSBeautifier. crbug.com/100409. 540 541 Made Math.random state per-context instead of per-process (issue 864). 542 543 Fixed stack traces to skip native functions. 544 545 Make snapshots (new contexts) smaller and faster. 546 547 Fixed handling of Function.apply for non-array arguments. 548 549 Fixed evaluation order in defineProperties to match FireFox. 550 551 Fixed handling of non-object receivers for array builtins, 552 crbug.com/100702. 553 554 Multiple fixes to improve compliance with test262. 555 556 Fixed compatibility with older Android releases. 557 558 Fixed compilation with gcc-4.5.3. 559 560 Improved performance of WriteUtf8, issue 1665. 561 562 Made native syntax an early error in the preparser. 563 564 Fixed issues 793 and 893 relating to Function.prototype.bind. 565 566 Improved let, const, Set and Map support and other Harmony features 567 (behind the --harmony flag). 568 569 Changed evaluation order for > and <= to match ES5 instead of ES3. 570 571 Bug fixes and performance improvements on all platforms. 572 573 574 2011-10-13: Version 3.7.0 575 576 Fixed array handling for Object.defineOwnProperty (ES5 conformance). 577 578 Fixed issue 1757 (string slices of external strings). 579 580 Fixed issue 1759 (ARM). 581 582 Added flag --noclever-optimizations to disable some things that 583 caused trouble in the past. 584 585 Added flag --stress-compaction for testing. 586 587 Added flag --harmony to activate all experimental Harmony features. 588 589 590 2011-10-10: Version 3.6.6 591 592 Added a GC pause visualization tool. 593 594 Added presubmit=no and werror=no flags to Makefile. 595 596 ES5/Test262 conformance improvements. 597 598 Fixed compilation issues with GCC 4.5.x (issue 1743). 599 600 Bug fixes and performance improvements on all platforms. 601 602 603 2011-10-05: Version 3.6.5 604 605 New incremental garbage collector. 606 607 Removed the hard heap size limit (soft heap size limit is still 608 700/1400Mbytes by default). 609 610 Implemented ES5 generic Array.prototype.toString (Issue 1361). 611 612 V8 now allows surrogate pair codes in decodeURIComponent (Issue 1415). 613 614 Fixed x64 RegExp start-of-string bug (Issues 1746, 1748). 615 616 Fixed propertyIsEnumerable for numeric properties (Issue 1692). 617 618 Fixed the MinGW and Windows 2000 builds. 619 620 Fixed "Prototype chain is not searched if named property handler does 621 not set a property" (Issue 1636). 622 623 Made the RegExp.prototype object be a RegExp object (Issue 1217). 624 625 Disallowed future reserved words as labels in strict mode. 626 627 Fixed string split to correctly coerce the separator to a string 628 (Issue 1711). 629 630 API: Added an optional source length field to the Extension 631 constructor. 632 633 API: Added Debug::DisableAgent to match existing Debug::EnableAgent 634 (Issue 1573). 635 636 Added "native" target to Makefile for the benefit of Linux distros. 637 638 Fixed: debugger stops stepping outside evaluate (Issue 1639). 639 640 More work on ES-Harmony proxies. Still hidden behind a flag. 641 642 Bug fixes and performance improvements on all platforms. 643 644 645 2011-09-15: Version 3.6.4 646 647 Fixed d8's broken readline history. 648 649 Removed the need for code delete events in CPU profiler (Issue 1466). 650 651 Fixed debugger stepping next with trycatch recursion (Issue 1639). 652 653 Fixing parallel execution in d8 (with -p) and some memory leaks. 654 655 Support for precise stepping in functions compiled before debugging was 656 started (step 1). 657 658 659 2011-09-13: Version 3.6.3 660 661 Implemented better support of typed arrays in the d8 shell. 662 663 Bug fixes and performance improvements on all platforms. 664 665 666 2011-09-08: Version 3.6.2 667 668 Added "dependencies" target to top-level Makefile. 669 670 Added ability to turn profiler on/off in d8. 671 672 Added "soname_version" parameter to common.gypi, v8.gyp, and Makefile. 673 674 Fixed several crash bugs. 675 676 677 2011-09-07: Version 3.6.1 678 679 Fixed a bug in abrupt exit from with or catch inside finally. 680 681 Fixed possible crash in FixedDoubleArray::Initialize() (Chromium 682 issue 95113). 683 684 Fixed a bug in Page::GetRegionMaskForSpan (Chromium issue 94425). 685 686 Fixed a few clang warnings (which -Werror treated as errors). 687 688 Performance improvements on all platforms. 689 690 691 2011-09-05: Version 3.6.0 692 693 Fixed a bug when optimizing named function expression (issue 1647). 694 695 Fixed a bug when optimizing f.call.apply (issue 1650). 696 697 Made arguments and caller always be null on native functions 698 (issues 1548 and 1643). 699 700 Fixed issue 1648 (cross-compiling x64 targeting ia32). 701 702 Fixed issue 371 (d8 printing of strings containing \0). 703 704 Fixed order of evaluation in arguments to parseInt (issue 1649). 705 706 Fixed a problem with large heap snapshots in Chrome DevTools 707 (issue 1658, chromium issue 89268). 708 709 Upped default maximum heap size from 512M to 700M. 710 711 712 2011-08-31: Version 3.5.10 713 714 Added dependency of v8_base on WinSocket2 Windows library in 715 the GYP-build. 716 717 Various bugfixes. 718 719 720 2011-08-29: Version 3.5.9 721 722 Made FromPropertyDescriptor not trigger inherited setters. 723 724 Fixed .gyp files to work on the ARM simulator. 725 726 Fixed shared library build warnings for MSVS. 727 728 729 2011-08-24: Version 3.5.8 730 731 Added V8EXPORT attributes for v8::Array::CheckCast and 732 v8::Number::CheckCast. 733 734 Made a slight API change enabling opting out from null termination 735 in String::Write*(). 736 737 Fixed arm build for gcc-4.6. 738 739 740 2011-08-22: Version 3.5.7 741 742 Make scanner handle invalid unicode escapes in identifiers correctly. 743 744 Make regexp flag parsing stricter. 745 746 Fix several memory leaks. 747 748 749 2011-08-17: Version 3.5.6 750 751 Fixed issue that could cause crashes when running with --heap-stats. 752 753 Fixed compilation on Linux 2.6.9 and older. 754 755 Fixed live-object-list to work with isolates. 756 757 Fixed memory leaks in zones and isolates. 758 759 Fixed a performance regression for TypedArrays on x64. 760 761 Stability improvements on all platforms. 762 763 764 2011-08-15: Version 3.5.5 765 766 Fixed bugs involving negative zero and the optimizing compiler. 767 768 Fixed optimized version of Function.apply(x, arguments). (issue 1592) 769 770 Eliminated uses of deprecated ARM instructions. 771 772 Sped up Math.floor by using SSE 4.1 roundsd instruction on ia32. 773 774 Removed restriction on the size of disassembled code that is printed. 775 776 777 2011-08-10: Version 3.5.4 778 779 Added a preliminary implementation of ES Harmony weak maps. Weak 780 maps can be enabled by the flag --harmony-weakmaps. 781 782 Introduced a toplevel Makefile to support GYP-based building. GYP 783 can be obtained from http://gyp.googlecode.com. 784 785 Fixed a bug in the length property of functions created by 786 Function.prototype.bind. 787 788 Reduced malloc heap allocation on process startup. 789 790 Several important code generation bug fixes. 791 792 Performance improvements on all platforms. 793 794 795 2011-08-03: Version 3.5.3 796 797 MIPS: Port of fix to ClassOf check from ARM. 798 Patch from Paul Lind <plind44 (a] gmail.com>. 799 800 Stopped using mprotect on Cygwin. 801 Avoided uninitialized member warning on gcc 4.3.4 802 Both patches by Bert Belder. 803 804 Bug fixes and performance improvements on all platforms. 805 806 807 2011-08-01: Version 3.5.2 808 809 Performance improvements on all platforms. 810 811 812 2011-07-28: Version 3.5.1 813 814 Fixed setting the readonly flag on the prototype property using the 815 API call FunctionTemplate::SetPrototypeAttributes (issue 1539). 816 817 Changed the tools/test.py script to use d8 instead of shell for 818 testing. 819 820 Fixed crash in ToBooleanStub when GC happens during invocation. 821 822 Enabled automatic unboxing of double arrays. 823 824 Performance improvements on all platforms. 825 826 827 2011-07-25: Version 3.5.0 828 829 Implemented Object.prototype.{hasOwnProperty, propertyIsEnumerable} for 830 proxies. 831 832 Removed logging to memory support. 833 834 Bugfixes and performance work. 835 836 837 2011-07-20: Version 3.4.14 838 839 Fix the debugger for strict-mode functions. (Chromium issue 89236) 840 841 Add GetPropertyAttribute method for Object in the API. (Patch by 842 Peter Varga) 843 844 Fix -Wunused-but-set-variable for gcc-4.6 on x64. (Issue 1291) 845 846 847 2011-07-18: Version 3.4.13 848 849 Improved debugger support to allow inspection of optimized frames (issue 850 1140). 851 852 Fixed a bug in prototype transitions cache clearing introduced by r8165. 853 854 Fixed shortcutting bug in HInferRepresentation. Patch by Andy Wingo. 855 856 Fixed a memory leak in sample/shell.cc (dispose semaphores). 857 858 Simplified HClampToUint8. Patch by Andy Wingo. 859 860 Exposed APIs for detecting boxed primitives, native errors. Patch by 861 Luke Zarko. 862 863 Added map check for COW elements to crankshaft array handling code 864 (issue 1560). 865 866 Sample shell and (a light version of) D8 links against a shared library 867 now. 868 869 Fixed bug in array filter and reduce functions (issue 1559). 870 871 Avoid TLS load in AstNode constructor. 872 873 Introduced a random entropy source which can optionally be provided at 874 initialization. (Chromium issue 89462). 875 876 877 2011-07-13: Version 3.4.12 878 879 Added --prof profiling option to d8 shell. 880 881 Fixed a bug where reading a directory in d8 shell hangs (issue 1533). 882 883 Fixed a potential assertion failure in const declarations. 884 885 Fixed an assertion failure in descriptor arrays (issue 1526). 886 887 Enabled fast thread-local storage by default on supported platforms. 888 889 Improved reporting of source position for global variable loads 890 (issue 1527). 891 892 893 2011-07-11: Version 3.4.11 894 895 Fixed MinGW32 build. 896 897 Fixed a GC bug with RegExp code flushing. 898 899 Implemented Object.defineProperty for proxies. 900 901 Fixed a bug in for/in iteration of arguments objects (issue 1531). 902 903 Added debugger support for inspecting optimized frames (issue 1140). 904 905 Allowed JSObject::PreventExtensions to work for arguments objects. 906 907 Bugfixes and performance work. 908 909 910 2011-07-06: Version 3.4.10 911 912 Fixed debugger not breaking on certain "if" statements (issue 1523). 913 914 Fixed assertion failure in runtime profiler when running on IA32 915 without snapshot (issue 1522). 916 917 Fixed ABI for API calls on IA32 (for clang compatibility). 918 919 Introduced code flushing of RegExp code to free memory used by 920 RegExps sooner. 921 922 Fixed linux-tick-processor built wrong version of v8 (issue 1532). 923 924 Fixed assertion failure in v8::TryCache::StackTrace (issue 1529). 925 926 Performance improvements on all platforms. 927 928 929 2011-07-04: Version 3.4.9 930 931 Added support for debugger inspection of locals in optimized frames 932 (issue 1140). 933 934 Fixed SConstruct to pass correct defines to samples/preparser when 935 building with library=shared. 936 937 Made date parser handle ES5 Date Time Strings correctly (issue 1498). 938 939 Fixed a bug in Object.defineProperty on the arguments object. 940 941 Performance improvements on all platforms. 942 943 944 2011-06-29: Version 3.4.8 945 946 Ensure 16-byte stack alignment on Solaris (issue 1505). 947 948 Fix "illegal access" when calling parseInt with a radix 949 that is not a smi. (issue 1246). 950 951 952 2011-06-27: Version 3.4.7 953 954 Fixed 64-bit build on FreeBSD. 955 956 Added API to set the property attributes for the prototype 957 property on functions created from FunctionTemplates. 958 959 Bugfixes and performance work. 960 961 962 2011-06-22: Version 3.4.6 963 964 Lowered limit on code space for systems with low memory supply. 965 966 Allowed compiling v8_shell with the 'host' toolset (issue 82437). 967 968 Extended setBreakpoint API to accept partial script name (issue 1418). 969 970 Made multi-line comments not count when deciding whether the '-->' 971 comment starter is first on a line. This matches Safari. 972 973 Made handling of non-array recievers in Array length setter correct 974 (issue 1491). 975 976 Added ability to heap profiler to iterate over snapshot's node 977 (issue 1481). 978 979 980 2011-06-20: Version 3.4.5 981 982 Fixed issues 794, 1097, 1215(partial), 1417, 1435, 1472, 1473, 983 1476, and 1477. 984 985 Improved code generation for !0 and !1. 986 987 Reduced memory usage for regular expressions with nested qualifiers. 988 (issue 1472) 989 990 Fixed V8 to count line terminators in multi-line comments. 991 (Chromium issue 86431) 992 993 Fixed disassembler=on option for release-mode builds. (issue 1473) 994 995 Performance improvements on all platforms. 996 997 998 2011-06-15: Version 3.4.4 999 1000 Added snapshot compression support and --stress-opt flag to d8. 1001 1002 Improved performance of try/catch. 1003 1004 Several GYP-related changes: Added support for building Xcode project 1005 files. Make the ARM simulator build with GYP again. Generate Makefiles 1006 for all architectures on Linux. 1007 1008 Fixed Array.prototype.{reduce,reduceRight} to pass undefined as the 1009 receiver for strict mode callbacks. (issue 1436) 1010 1011 Fixed a bug where an array load was incorrectly hoisted by GVN. 1012 1013 Handle 'undefined' correctly when === has been specialized for doubles. 1014 (issue 1434) 1015 1016 Corrected the limit of local variables in an optimized function from 64 1017 to 63. 1018 1019 Correctly set ReadOnly flag on indexed properties when using the API Set 1020 method. (issue 1470) 1021 1022 Give the correct error message when Object.isExtensible is called on a 1023 non-object. (issue 1452) 1024 1025 Added GetOwnPropertyNames method for Object in the API. Patch by Peter 1026 Varga. 1027 1028 Do not redefine properties unneccesarily in seal and freeze. (issue 1029 1447) 1030 1031 IsExecutionTerminating has an Isolate parameter now. 1032 1033 Distinguish keyed loads with a symbol key from fast elements loads, 1034 avoiding some useless deoptimizations. (issue 1471) 1035 1036 1037 2011-06-08: Version 3.4.3 1038 1039 Clear the global thread table when an isolate is disposed 1040 (issue 1433). 1041 1042 Converted time zone name to UTF8 on Windows (issue 1290). 1043 1044 Limited the number of arguments in a function call to 32766 1045 (issue 1413). 1046 1047 Compress sources of JS libraries in addition to the snapshot. 1048 1049 Fixed a bug in Lithium environment iteration. 1050 1051 Performance improvements on all platforms. 1052 1053 1054 2011-06-06: Version 3.4.2 1055 1056 More work on ES-Harmony proxies. Still hidden behind a flag. 1057 1058 Fixed some crash bugs and improved performance. 1059 1060 Fixed building with gdb debugging support. 1061 1062 Do not install SIGPROF handler until it is needed. 1063 1064 Added DateTimeFormat to i18n API. 1065 1066 Fixed compilation on OpenBSD. 1067 1068 Take the ulimit into account when sizing the heap. OpenBSD users 1069 may still have to increase the default ulimit to run heavy pages in 1070 the browser. 1071 1072 1073 2011-06-01: Version 3.4.1 1074 1075 Fixed JSON stringify issue with arrays. 1076 1077 Changed calls to JS builtins to be passed undefined when called with 1078 implicit receiver. 1079 1080 Implemented the set trap for Harmony proxies. Proxies still need to 1081 be enabled with the --harmony-proxies flag. 1082 1083 1084 2011-05-30: Version 3.4.0 1085 1086 Changed calls to undefined property setters to not throw (issue 1355). 1087 1088 Made RegExp objects not callable. 1089 1090 Fixed issues on special case large JSON strings in new json parser 1091 (issues http://crbug.com/83877 and http://crbug.com/84186). 1092 1093 Performance improvements on all platforms. 1094 1095 1096 2011-05-25: Version 3.3.10 1097 1098 Fixed calls of strict mode function with an implicit receiver. 1099 1100 Fixed fast handling of arrays to properly deal with changes to the 1101 Object prototype (issue 1403). 1102 1103 Changed strict mode poison pill to be the same type error function 1104 (issue 1387). 1105 1106 Fixed a debug crash in arguments object handling (issue 1227). 1107 1108 Fixed a bug in deoptimization on x64 (issue 1404). 1109 1110 Performance improvements and bug fixes on all platforms. 1111 1112 1113 2011-05-23: Version 3.3.9 1114 1115 Added DateTimeFormat class to experimental i18n API. 1116 1117 Extended preparser to give early errors for some strict mode 1118 restrictions. 1119 1120 Removed legacy execScript function from V8. 1121 1122 Extended isolate API with the ability to add embedder-specific 1123 data to an isolate. 1124 1125 Added basic support for polymorphic loads from JS and external 1126 arrays. 1127 1128 Fixed bug in handling of switch statements in the optimizing 1129 compiler. 1130 1131 1132 2011-05-18: Version 3.3.8 1133 1134 Added MarkIndependent to the persistent handle API. Independent 1135 handles are independent of all other persistent handles and can be 1136 garbage collected more frequently. 1137 1138 Implemented the get trap for Harmony proxies. Proxies are enabled 1139 with the --harmony-proxies flag. 1140 1141 Performance improvements and bug fixes on all platforms. 1142 1143 1144 2011-05-16: Version 3.3.7 1145 1146 Updated MIPS infrastructure files. 1147 1148 Performance improvements and bug fixes on all platforms. 1149 1150 1151 2011-05-11: Version 3.3.6 1152 1153 Updated MIPS infrastructure files. 1154 1155 Added method IsCallable for Object to the API. 1156 Patch by Peter Varga. 1157 1158 1159 2011-05-09: Version 3.3.5 1160 1161 Fixed build on FreeBSD. Patch by Akinori MUSHA. 1162 1163 Added check that receiver is JSObject on API calls. 1164 1165 Implemented CallAsConstructor method for Object in the API (Issue 1348). 1166 Patch by Peter Varga. 1167 1168 Added CallAsFunction method to the Object class in the API (Issue 1336). 1169 Patch by Peter Varga. 1170 1171 Added per-isolate locking and unlocking. 1172 1173 Fixed bug in x64 >>> operator (Issue 1359). 1174 1175 1176 2011-05-04: Version 3.3.4 1177 1178 Implemented API to disallow code generation from strings for a context 1179 (issue 1258). 1180 1181 Fixed bug with whitespaces in parseInt (issue 955). 1182 1183 Fixed bug with == comparison of Date objects (issue 1356). 1184 1185 Added GYP variables for ARM code generation: 1186 v8_can_use_vfp_instructions, v8_can_use_unaligned_accesses 1187 and v8_use_arm_eabi_hardfloat. 1188 1189 1190 2011-05-02: Version 3.3.3 1191 1192 Added support for generating Visual Studio solution and project files 1193 using GYP. 1194 1195 Implemented support for ARM EABI calling convention variation where 1196 floating-point arguments are passed in registers (hardfloat). 1197 1198 Added Object::HasOwnProperty() to the API. 1199 1200 Added support for compressing startup data to reduce binary size. This 1201 includes build time support and an API for the embedder to decompress 1202 the startup data before initializing V8. 1203 1204 Reduced the profiling hooks overhead from >400% to 25% when using 1205 ll_prof. 1206 1207 Performance improvements and bug fixes on all platforms. 1208 1209 1210 2011-04-27: Version 3.3.2 1211 1212 Fixed crash bug on ARM with no VFP3 hardware. 1213 1214 Fixed compilation of V8 without debugger support. 1215 1216 Improved performance on JSLint. 1217 1218 Added support Float64 WebGL arrays. 1219 1220 Fixed crash bug in regexp replace. 1221 1222 1223 2011-04-20: Version 3.3.1 1224 1225 Reduced V8 binary size by removing virtual functions from hydrogen. 1226 1227 Fixed crash bug on x64. 1228 1229 Performance improvements on ARM and IA32. 1230 1231 1232 2011-04-18: Version 3.3.0 1233 1234 Fixed bug in floating point rounding in Crankshaft on ARM 1235 (issue 958) 1236 1237 Fixed a number of issues with running without VFPv3 support on ARM 1238 (issue 1315) 1239 1240 Introduced v8Locale.Collator, a partial implementation of Collator 1241 per last ECMAScript meeting + mailing list. 1242 1243 Minor performance improvements and bug fixes. 1244 1245 1246 2011-04-13: Version 3.2.10 1247 1248 Fixed bug in external float arrays on ARM (issue 1323). 1249 1250 Minor performance improvements and bug fixes. 1251 1252 1253 2011-04-11: Version 3.2.9 1254 1255 Removed support for ABI prior to EABI on ARM. 1256 1257 Fixed multiple crash bugs. 1258 1259 Added GCMole to the repository, a simple static analysis tool that 1260 searches for GC-unsafe evaluation order dependent callsites. 1261 1262 Made preparser API be exported in shared libraries. 1263 1264 Fixed multiple issues in EcmaScript 5 strict mode implementation. 1265 1266 Fixed mutable __proto__ property if object is not extensible 1267 (Issue 1309). 1268 1269 Fixed auto suspension of the sampler thread. 1270 1271 1272 2011-04-06: Version 3.2.8 1273 1274 Exposed WebGL typed array constructors in the shell sample. 1275 1276 Performance improvements on all platforms. 1277 1278 1279 2011-04-04: Version 3.2.7 1280 1281 Disabled the original 'classic' V8 code generator. Crankshaft is 1282 now the default on all platforms. 1283 1284 Changed the heap profiler to use more descriptive names. 1285 1286 Performance and stability improvements to isolates on all platforms. 1287 1288 1289 2011-03-30: Version 3.2.6 1290 1291 Fixed xcode build warning in shell.cc (out of order initialization). 1292 1293 Fixed null-pointer dereference in the compiler when running without 1294 SSE3 support (Chromium issue 77654). 1295 1296 Fixed x64 compilation error due to some dead code. (Issue 1286) 1297 1298 Introduced scons target to build the preparser stand-alone example. 1299 1300 Made FreeBSD build and pass all tests. 1301 1302 1303 2011-03-28: Version 3.2.5 1304 1305 Fixed build with Irregexp interpreter (issue 1266). 1306 1307 Added Crankshaft support for external arrays. 1308 1309 Fixed two potential crash bugs. 1310 1311 1312 2011-03-23: Version 3.2.4 1313 1314 Added isolates which allows several V8 instances in the same process. 1315 This is controlled through the new Isolate class in the API. 1316 1317 Implemented more of EcmaScript 5 strict mode. 1318 1319 Reduced the time it takes to make detailed heap snapshot. 1320 1321 Added a number of commands to the ARM simulator and enhanced the ARM 1322 disassembler. 1323 1324 1325 2011-03-17: Version 3.2.3 1326 1327 Fixed a number of crash bugs. 1328 1329 Fixed Array::New(length) to return an array with a length (issue 1256). 1330 1331 Fixed FreeBSD build. 1332 1333 Changed __defineGetter__ to not throw (matching the behavior of Safari). 1334 1335 Implemented more of EcmaScript 5 strict mode. 1336 1337 Improved Crankshaft performance on all platforms. 1338 1339 1340 2011-03-14: Version 3.2.2 1341 1342 Fixed a number of crash and correctness bugs. 1343 1344 Improved Crankshaft performance on all platforms. 1345 1346 Fixed Crankshaft on Solaris/Illumos. 1347 1348 1349 2011-03-10: Version 3.2.1 1350 1351 Fixed a number of crash bugs. 1352 1353 Improved Crankshaft for x64 and ARM. 1354 1355 Implemented more of EcmaScript 5 strict mode. 1356 1357 1358 2011-03-07: Version 3.2.0 1359 1360 Fixed a number of crash bugs. 1361 1362 Turned on Crankshaft by default on x64 and ARM. 1363 1364 Improved Crankshaft for x64 and ARM. 1365 1366 Implemented more of EcmaScript 5 strict mode. 1367 1368 1369 2011-03-02: Version 3.1.8 1370 1371 Fixed a number of crash bugs. 1372 1373 Improved Crankshaft for x64 and ARM. 1374 1375 Implemented more of EcmaScript 5 strict mode. 1376 1377 Fixed issue with unaligned reads and writes on ARM. 1378 1379 Improved heap profiler support. 1380 1381 1382 2011-02-28: Version 3.1.7 1383 1384 Fixed a number of crash bugs. 1385 1386 Improved Crankshaft for x64 and ARM. 1387 1388 Fixed implementation of indexOf/lastIndexOf for sparse 1389 arrays (http://crbug.com/73940). 1390 1391 Fixed bug in map space compaction (http://crbug.com/59688). 1392 1393 Added support for direct getter accessors calls on ARM. 1394 1395 1396 2011-02-24: Version 3.1.6 1397 1398 Fixed a number of crash bugs. 1399 1400 Added support for Cygwin (issue 64). 1401 1402 Improved Crankshaft for x64 and ARM. 1403 1404 Added Crankshaft support for stores to pixel arrays. 1405 1406 Fixed issue in CPU profiler with Crankshaft. 1407 1408 1409 2011-02-16: Version 3.1.5 1410 1411 Change RegExp parsing to disallow /(*)/. 1412 1413 Added GDB JIT support for ARM. 1414 1415 Fixed several crash bugs. 1416 1417 Performance improvements on the IA32 platform. 1418 1419 1420 2011-02-14: Version 3.1.4 1421 1422 Fixed incorrect compare of prototypes of the global object (issue 1423 1082). 1424 1425 Fixed a bug in optimizing calls to global functions (issue 1106). 1426 1427 Made optimized Function.prototype.apply safe for non-JSObject first 1428 arguments (issue 1128). 1429 1430 Fixed an error related to element accessors on Object.prototype and 1431 parser errors (issue 1130). 1432 1433 Fixed a bug in sorting an array with large array indices (issue 1131). 1434 1435 Properly treat exceptions thrown while compiling (issue 1132). 1436 1437 Fixed bug in register requirements for function.apply (issue 1133). 1438 1439 Fixed a representation change bug in the Hydrogen graph construction 1440 (issue 1134). 1441 1442 Fixed the semantics of delete on parameters (issue 1136). 1443 1444 Fixed a optimizer bug related to moving instructions with side effects 1445 (issue 1138). 1446 1447 Added support for the global object in Object.keys (issue 1150). 1448 1449 Fixed incorrect value for Math.LOG10E 1450 (issue http://code.google.com/p/chromium/issues/detail?id=72555) 1451 1452 Performance improvements on the IA32 platform. 1453 1454 Implement assignment to undefined reference in ES5 Strict Mode. 1455 1456 1457 2011-02-09: Version 3.1.3 1458 1459 Fixed a bug triggered by functions with huge numbers of declared 1460 arguments. 1461 1462 Fixed zap value aliasing a real object - debug mode only (issue 866). 1463 1464 Fixed issue where Array.prototype.__proto__ had been set to null 1465 (issue 1121). 1466 1467 Fixed stability bugs in Crankshaft for x86. 1468 1469 1470 2011-02-07: Version 3.1.2 1471 1472 Added better security checks when accessing properties via 1473 Object.getOwnPropertyDescriptor. 1474 1475 Fixed bug in Object.defineProperty and related access bugs (issues 1476 992, 1083 and 1092). 1477 1478 Added LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to ease 1479 copyright notice generation for embedders. 1480 1481 1482 2011-02-02: Version 3.1.1 1483 1484 Perform security checks before fetching the value in 1485 Object.getOwnPropertyDescriptor. 1486 1487 Fixed a bug in Array.prototype.splice triggered by passing no 1488 arguments. 1489 1490 Fixed bugs in -0 in arithmetic and in Math.pow. 1491 1492 Fixed bugs in the register allocator and in switching from optimized 1493 to unoptimized code. 1494 1495 1496 2011-01-31: Version 3.1.0 1497 1498 Performance improvements on all platforms. 1499 1500 1501 2011-01-28: Version 3.0.12 1502 1503 Added support for strict mode parameter and object property 1504 validation. 1505 1506 Fixed a couple of crash bugs. 1507 1508 1509 2011-01-25: Version 3.0.11 1510 1511 Fixed a bug in deletion of lookup slots that could cause global 1512 variables to be accidentally deleted (http://crbug.com/70066). 1513 1514 Added support for strict mode octal literal verification. 1515 1516 Fixed a couple of crash bugs (issues 1070 and 1071). 1517 1518 1519 2011-01-24: Version 3.0.10 1520 1521 Fixed External::Wrap for 64-bit addresses (issue 1037). 1522 1523 Fixed incorrect .arguments variable proxy handling in the full 1524 code generator (issue 1060). 1525 1526 Introduced partial strict mode support. 1527 1528 Changed formatting of recursive error messages to match Firefox and 1529 Safari (issue http://crbug.com/70334). 1530 1531 Fixed incorrect rounding for float-to-integer conversions for external 1532 array types, which implement the Typed Array spec 1533 (issue http://crbug.com/50972). 1534 1535 Performance improvements on the IA32 platform. 1536 1537 1538 2011-01-19: Version 3.0.9 1539 1540 Added basic GDB JIT Interface integration. 1541 1542 Make invalid break/continue statements a syntax error instead of a 1543 runtime error. 1544 1545 1546 2011-01-17: Version 3.0.8 1547 1548 Exposed heap size limit to the heap statistics gathered by 1549 the GetHeapStatistics API. 1550 1551 Wrapped external pointers more carefully (issue 1037). 1552 1553 Hardened the implementation of error objects to avoid setters 1554 intercepting the properties set then throwing an error. 1555 1556 Avoided trashing the FPSCR when calculating Math.floor on ARM. 1557 1558 Performance improvements on the IA32 platform. 1559 1560 1561 2011-01-10: Version 3.0.7 1562 1563 Stopped calling inherited setters when creating object literals 1564 (issue 1015). 1565 1566 Changed interpretation of malformed \c? escapes in RegExp to match 1567 JSC. 1568 1569 Enhanced the command-line debugger interface and fixed some minor 1570 bugs in the debugger. 1571 1572 Performance improvements on the IA32 platform. 1573 1574 1575 2011-01-05: Version 3.0.6 1576 1577 Allowed getters and setters on JSArray elements (issue 900). 1578 1579 Stopped JSON objects from hitting inherited setters (part of 1580 issue 1015). 1581 1582 Allowed numbers and strings as names of getters/setters in object 1583 initializer (issue 820). 1584 1585 Added use_system_v8 option to gyp (off by default), to make it easier 1586 for Linux distributions to ship with system-provided V8 library. 1587 1588 Exported external array data accessors (issue 1016). 1589 1590 Added labelled thread names to help with debugging (on Linux). 1591 1592 1593 2011-01-03: Version 3.0.5 1594 1595 Fixed a couple of cast errors for gcc-3.4.3. 1596 1597 Performance improvements in GC and IA32 code generator. 1598 1599 1600 2010-12-21: Version 3.0.4 1601 1602 Added Date::ResetCache() to the API so that the cached values in the 1603 Date object can be reset to allow live DST / timezone changes. 1604 1605 Extended existing support for printing (while debugging) the contents 1606 of objects. Added support for printing objects from release builds. 1607 1608 Fixed V8 issues 989, 1006, and 1007. 1609 1610 1611 2010-12-17: Version 3.0.3 1612 1613 Reapplied all changes for version 3.0.1. 1614 1615 Improved debugger protocol for remote debugging. 1616 1617 Added experimental support for using gyp to generate build files 1618 for V8. 1619 1620 Fixed implementation of String::Write in the API (issue 975). 1621 1622 1623 2010-12-15: Version 3.0.2 1624 1625 Revert version 3.0.1 and patch 3.0.1.1. 1626 1627 1628 2010-12-13: Version 3.0.1 1629 1630 Added support for an experimental internationalization API as an 1631 extension. This extension is disabled by default but can be enabled 1632 when building V8. The ECMAScript internationalization strawman is 1633 at http://wiki.ecmascript.org/doku.php?id=strawman:i18n_api. 1634 1635 Made RegExp character class parsing stricter. This mirrors a change 1636 to RegExp parsing in WebKit. 1637 1638 Fixed a bug in Object.defineProperty when used to change attributes 1639 of an existing property. It incorrectly set the property value to 1640 undefined (issue 965). 1641 1642 Fixed several different compilation failures on various platforms 1643 caused by the 3.0.0 release. 1644 1645 Optimized Math.pow so it can work on unboxed doubles. 1646 1647 Sped up quoting of JSON strings by removing one traversal of the 1648 string. 1649 1650 1651 2010-12-07: Version 3.0.0 1652 1653 Improved performance by (partially) addressing issue 957 on 1654 IA-32. Still needs more work for the other architectures. 1655 1656 1657 2010-11-29: Version 2.5.9 1658 1659 Fixed crashes during GC caused by partially initialize heap 1660 objects. 1661 1662 Fixed bug in process sample that caused memory leaks. 1663 1664 Improved performance on ARM by implementing missing stubs and 1665 inlining. 1666 1667 Improved heap profiler support. 1668 1669 Added separate seeding on Windows of the random number generator 1670 used internally by the compiler (issue 936). 1671 1672 Exposed API for getting the name of the function used to construct 1673 an object. 1674 1675 Fixed date parser to handle one and two digit millisecond 1676 values (issue 944). 1677 1678 Fixed number parsing to disallow space between sign and 1679 digits (issue 946). 1680 1681 1682 2010-11-23: Version 2.5.8 1683 1684 Removed dependency on Gay's dtoa. 1685 1686 Improved heap profiler precision and speed. 1687 1688 Reduced overhead of callback invocations on ARM. 1689 1690 1691 2010-11-18: Version 2.5.7 1692 1693 Fixed obscure evaluation order bug (issue 931). 1694 1695 Split the random number state between JavaScript and the private API. 1696 1697 Fixed performance bug causing GCs when generating stack traces on 1698 code from very large scripts. 1699 1700 Fixed bug in parser that allowed (foo):42 as a labelled statement 1701 (issue 918). 1702 1703 Provide more accurate results about used heap size via 1704 GetHeapStatistics. 1705 1706 Allow build-time customization of the max semispace size. 1707 1708 Made String.prototype.split honor limit when separator is empty 1709 (issue 929). 1710 1711 Added missing failure check after expecting an identifier in 1712 preparser (Chromium issue 62639). 1713 1714 1715 2010-11-10: Version 2.5.6 1716 1717 Added support for VFP rounding modes to the ARM simulator. 1718 1719 Fixed multiplication overflow bug (issue 927). 1720 1721 Added a limit for the amount of executable memory (issue 925). 1722 1723 1724 2010-11-08: Version 2.5.5 1725 1726 Added more aggressive GC of external objects in near out-of-memory 1727 situations. 1728 1729 Fixed a bug that gave the incorrect result for String.split called 1730 on the empty string (issue 924). 1731 1732 1733 2010-11-03: Version 2.5.4 1734 1735 Improved V8 VFPv3 runtime detection to address issue 914. 1736 1737 1738 2010-11-01: Version 2.5.3 1739 1740 Fixed a bug that prevents constants from overwriting function values 1741 in object literals (issue 907). 1742 1743 Fixed a bug with reporting of impossible nested calls of DOM functions 1744 (issue http://crbug.com/60753). 1745 1746 1747 2010-10-27: Version 2.5.2 1748 1749 Improved sampler resolution on Linux. 1750 1751 Allowed forcing the use of a simulator from the build script 1752 independently of the host architecture. 1753 1754 Fixed FreeBSD port (issue 912). 1755 1756 Made windows-tick-processor respect D8_PATH. 1757 1758 Implemented --noinline-new flag fully on IA32, X64 and ARM platforms. 1759 1760 1761 2010-10-20: Version 2.5.1 1762 1763 Fixed bug causing spurious out of memory exceptions 1764 (issue http://crbug.com/54580). 1765 1766 Fixed compilation error on Solaris platform (issue 901). 1767 1768 Fixed error in strtod (string to floating point number conversion) 1769 due to glibc's use of 80-bit floats in the FPU on 32-bit linux. 1770 1771 Adjusted randomized allocations of executable memory to have 64k 1772 granularity (issue http://crbug.com/56036). 1773 1774 Supported profiling using kernel perf_events on linux. Added ll_prof 1775 script to tools and --ll-prof flag to V8. 1776 1777 1778 2010-10-18: Version 2.5.0 1779 1780 Fixed bug in cache handling of lastIndex on global regexps 1781 (issue http://crbug.com/58740). 1782 1783 Added USE_SIMULATOR macro that explicitly indicates that we wish to use 1784 the simulator as the execution engine (by Mark Lam <mark.lam (a] palm.com> 1785 from Hewlett-Packard Development Company, LP). 1786 1787 Fixed compilation error on ARM with gcc 4.4 (issue 894). 1788 1789 1790 2010-10-13: Version 2.4.9 1791 1792 Fixed a bug in the handling of conditional expressions in test 1793 contexts in compiler for top-level code. 1794 1795 Added "//@ sourceURL" information to the StackTrace API. 1796 1797 Exposed RegExp construction through the API. 1798 1799 1800 2010-10-04: Version 2.4.8 1801 1802 Fixed a bug in ResumeProfilerEx causing it to not always write out the 1803 whole snapshot (issue 868). 1804 1805 Performance improvements on all platforms. 1806 1807 1808 2010-09-30: Version 2.4.7 1809 1810 Changed the command-line flag --max-new-space-size to be in kB and the 1811 flag --max-old-space-size to be in MB (previously they were in bytes). 1812 1813 Added Debug::CancelDebugBreak to the debugger API. 1814 1815 Fixed a bug in getters for negative numeric property names 1816 (https://bugs.webkit.org/show_bug.cgi?id=46689). 1817 1818 Performance improvements on all platforms. 1819 1820 1821 2010-09-27: Version 2.4.6 1822 1823 Fixed assertion failure related to copy-on-write arrays (issue 876). 1824 1825 Fixed build failure of 64-bit V8 on Windows. 1826 1827 Fixed a bug in RegExp (issue http://crbug.com/52801). 1828 1829 Improved the profiler's coverage to cover more functions (issue 858). 1830 1831 Fixed error in shift operators on 64-bit V8 1832 (issue http://crbug.com/54521). 1833 1834 1835 2010-09-22: Version 2.4.5 1836 1837 Changed the RegExp benchmark to exercise the regexp engine on different 1838 inputs by scrambling the input strings. 1839 1840 Fixed a bug in keyed loads on strings. 1841 1842 Fixed a bug with loading global function prototypes. 1843 1844 Fixed a bug with profiling RegExp calls (issue http://crbug.com/55999). 1845 1846 Performance improvements on all platforms. 1847 1848 1849 2010-09-15: Version 2.4.4 1850 1851 Fixed bug with hangs on very large sparse arrays. 1852 1853 Now tries harder to free up memory when running out of space. 1854 1855 Added heap snapshots to JSON format to API. 1856 1857 Recalibrated benchmarks. 1858 1859 1860 2010-09-13: Version 2.4.3 1861 1862 Made Date.parse properly handle TZ offsets (issue 857). 1863 1864 Performance improvements on all platforms. 1865 1866 1867 2010-09-08: Version 2.4.2 1868 1869 Fixed GC crash bug. 1870 1871 Fixed stack corruption bug. 1872 1873 Fixed compilation for newer C++ compilers that found Operand(0) 1874 ambiguous. 1875 1876 1877 2010-09-06: Version 2.4.1 1878 1879 Added the ability for an embedding application to receive a callback 1880 when V8 allocates (V8::AddMemoryAllocationCallback) or deallocates 1881 (V8::RemoveMemoryAllocationCallback) from the OS. 1882 1883 Fixed several JSON bugs (including issue 855). 1884 1885 Fixed memory overrun crash bug triggered during V8's tick-based 1886 profiling. 1887 1888 Performance improvements on all platforms. 1889 1890 1891 2010-09-01: Version 2.4.0 1892 1893 Fixed bug in Object.freeze and Object.seal when Array.prototype or 1894 Object.prototype are changed (issue 842). 1895 1896 Updated Array.splice to follow Safari and Firefox when called 1897 with zero arguments. 1898 1899 Fixed a missing live register when breaking at keyed loads on ARM. 1900 1901 Performance improvements on all platforms. 1902 1903 1904 2010-08-25: Version 2.3.11 1905 1906 Fixed bug in RegExp related to copy-on-write arrays. 1907 1908 Refactored tools/test.py script, including the introduction of 1909 VARIANT_FLAGS that allows specification of sets of flags with which 1910 all tests should be run. 1911 1912 Fixed a bug in the handling of debug breaks in CallIC. 1913 1914 Performance improvements on all platforms. 1915 1916 1917 2010-08-23: Version 2.3.10 1918 1919 Fixed bug in bitops on ARM. 1920 1921 Build fixes for unusual compilers. 1922 1923 Track high water mark for RWX memory. 1924 1925 Performance improvements on all platforms. 1926 1927 1928 2010-08-18: Version 2.3.9 1929 1930 Fixed compilation for ARMv4 on OpenBSD/FreeBSD. 1931 1932 Removed specialized handling of GCC 4.4 (issue 830). 1933 1934 Fixed DST cache to take into account the suspension of DST in 1935 Egypt during the 2010 Ramadan (issue http://crbug.com/51855). 1936 1937 Performance improvements on all platforms. 1938 1939 1940 2010-08-16: Version 2.3.8 1941 1942 Fixed build with strict aliasing on GCC 4.4 (issue 463). 1943 1944 Fixed issue with incorrect handling of custom valueOf methods on 1945 string wrappers (issue 760). 1946 1947 Fixed compilation for ARMv4 (issue 590). 1948 1949 Improved performance. 1950 1951 1952 2010-08-11: Version 2.3.7 1953 1954 Reduced size of heap snapshots produced by heap profiler (issue 783). 1955 1956 Introduced v8::Value::IsRegExp method. 1957 1958 Fixed CPU profiler crash in start / stop sequence when non-existent 1959 name is passed (issue http://crbug.com/51594). 1960 1961 Introduced new indexed property query callbacks API (issue 816). This 1962 API is guarded by USE_NEW_QUERY_CALLBACK define and is disabled 1963 by default. 1964 1965 Removed support for object literal get/set with number/string 1966 property name. 1967 1968 Fixed handling of JSObject::elements in CalculateNetworkSize 1969 (issue 822). 1970 1971 Allowed compiling with strict aliasing enabled on GCC 4.4 (issue 463). 1972 1973 1974 2010-08-09: Version 2.3.6 1975 1976 RegExp literals create a new object every time they are evaluated 1977 (issue 704). 1978 1979 Object.seal and Object.freeze return the modified object (issue 809). 1980 1981 Fixed building using GCC 4.4.4. 1982 1983 1984 2010-08-04: Version 2.3.5 1985 1986 Added support for ES5 property names. Object initialisers and 1987 dot-notation property access now allows keywords. Also allowed 1988 non-identifiers after "get" or "set" in an object initialiser. 1989 1990 Randomized the addresses of allocated executable memory on Windows. 1991 1992 1993 2010-08-02: Version 2.3.4 1994 1995 Fixed problems in implementation of ES5 function.prototype.bind. 1996 1997 Fixed error when using apply with arguments object on ARM (issue 784). 1998 1999 Added setting of global flags to debugger protocol. 2000 2001 Fixed an error affecting cached results of sin and cos (issue 792). 2002 2003 Removed memory leak from a boundary case where V8 is not initialized. 2004 2005 Fixed issue where debugger could set breakpoints outside the body 2006 of a function. 2007 2008 Fixed issue in debugger when using both live edit and step in features. 2009 2010 Added Number-letter (Nl) category to Unicode tables. These characters 2011 can now be used in identifiers. 2012 2013 Fixed an assert failure on X64 (issue 806). 2014 2015 Performance improvements on all platforms. 2016 2017 2018 2010-07-26: Version 2.3.3 2019 2020 Fixed error when building the d8 shell in a fresh checkout. 2021 2022 Implemented Function.prototype.bind (ES5 15.3.4.5). 2023 2024 Fixed an error in inlined stores on ia32. 2025 2026 Fixed an error when setting a breakpoint at the end of a function 2027 that does not end with a newline character. 2028 2029 Performance improvements on all platforms. 2030 2031 2032 2010-07-21: Version 2.3.2 2033 2034 Fixed compiler warnings when building with LLVM. 2035 2036 Fixed a bug with for-in applied to strings (issue 785). 2037 2038 Performance improvements on all platforms. 2039 2040 2041 2010-07-19: Version 2.3.1 2042 2043 Fixed compilation and linking with V8_INTERPRETED_REGEXP flag. 2044 2045 Fixed bug related to code flushing while compiling a lazy 2046 compilable function (issue http://crbug.com/49099). 2047 2048 Performance improvements on all platforms. 2049 2050 2051 2010-07-15: Version 2.3.0 2052 2053 Added ES5 Object.seal and Object.isSealed. 2054 2055 Added debugger API for scheduling debugger commands from a 2056 separate thread. 2057 2058 2059 2010-07-14: Version 2.2.24 2060 2061 Added API for capturing stack traces for uncaught exceptions. 2062 2063 Fixed crash bug when preparsing from a non-external V8 string 2064 (issue 775). 2065 2066 Fixed JSON.parse bug causing input not to be converted to string 2067 (issue 764). 2068 2069 Added ES5 Object.freeze and Object.isFrozen. 2070 2071 Performance improvements on all platforms. 2072 2073 2074 2010-07-07: Version 2.2.23 2075 2076 API change: Convert Unicode code points outside the basic multilingual 2077 plane to the replacement character. Previous behavior was to silently 2078 truncate the value to 16 bits. 2079 2080 Fixed crash: handle all flat string types in regexp replace. 2081 2082 Prevent invalid pre-parsing data passed in through the API from 2083 crashing V8. 2084 2085 Performance improvements on all platforms. 2086 2087 2088 2010-07-05: Version 2.2.22 2089 2090 Added ES5 Object.isExtensible and Object.preventExtensions. 2091 2092 Enabled building V8 as a DLL. 2093 2094 Fixed a bug in date code where -0 was not interpreted as 0 2095 (issue 736). 2096 2097 Performance improvements on all platforms. 2098 2099 2100 2010-06-30: Version 2.2.21 2101 2102 Fixed bug in externalizing some ASCII strings (Chromium issue 47824). 2103 2104 Updated JSON.stringify to floor the space parameter (issue 753). 2105 2106 Updated the Mozilla test expectations to the newest version. 2107 2108 Updated the ES5 Conformance Test expectations to the latest version. 2109 2110 Updated the V8 benchmark suite. 2111 2112 Provide actual breakpoints locations in response to setBreakpoint 2113 and listBreakpoints requests. 2114 2115 2116 2010-06-28: Version 2.2.20 2117 2118 Fixed bug with for-in on x64 platform (issue 748). 2119 2120 Fixed crash bug on x64 platform (issue 756). 2121 2122 Fixed bug in Object.getOwnPropertyNames. (chromium issue 41243). 2123 2124 Fixed a bug on ARM that caused the result of 1 << x to be 2125 miscalculated for some inputs. 2126 2127 Performance improvements on all platforms. 2128 2129 2130 2010-06-23: Version 2.2.19 2131 2132 Fixed bug that causes the build to break when profillingsupport=off 2133 (issue 738). 2134 2135 Added expose-externalize-string flag for testing extensions. 2136 2137 Resolve linker issues with using V8 as a DLL causing a number of 2138 problems with unresolved symbols. 2139 2140 Fixed build failure for cctests when ENABLE_DEBUGGER_SUPPORT is not 2141 defined. 2142 2143 Performance improvements on all platforms. 2144 2145 2146 2010-06-16: Version 2.2.18 2147 2148 Added API functions to retrieve information on indexed properties 2149 managed by the embedding layer. Fixes bug 737. 2150 2151 Made ES5 Object.defineProperty support array elements. Fixes bug 619. 2152 2153 Added heap profiling to the API. 2154 2155 Removed old named property query from the API. 2156 2157 Incremental performance improvements. 2158 2159 2160 2010-06-14: Version 2.2.17 2161 2162 Improved debugger support for stepping out of functions. 2163 2164 Incremental performance improvements. 2165 2166 2167 2010-06-09: Version 2.2.16 2168 2169 Removed the SetExternalStringDiposeCallback API. Changed the 2170 disposal of external string resources to call a virtual Dispose 2171 method on the resource. 2172 2173 Added support for more precise break points when debugging and 2174 stepping. 2175 2176 Memory usage improvements on all platforms. 2177 2178 2179 2010-06-07: Version 2.2.15 2180 2181 Added an API to control the disposal of external string resources. 2182 2183 Added missing initialization of a couple of variables which makes 2184 some compilers complaint when compiling with -Werror. 2185 2186 Improved performance on all platforms. 2187 2188 2189 2010-06-02: Version 2.2.14 2190 2191 Fixed a crash in code generated for String.charCodeAt. 2192 2193 Fixed a compilation issue with some GCC versions (issue 727). 2194 2195 Performance optimizations on x64 and ARM platforms. 2196 2197 2198 2010-05-31: Version 2.2.13 2199 2200 Implemented Object.getOwnPropertyDescriptor for element indices and 2201 strings (issue 599). 2202 2203 Fixed bug for windows 64 bit C calls from generated code. 2204 2205 Added new scons flag unalignedaccesses for arm builds. 2206 2207 Performance improvements on all platforms. 2208 2209 2210 2010-05-26: Version 2.2.12 2211 2212 Allowed accessors to be defined on objects rather than just object 2213 templates. 2214 2215 Changed the ScriptData API. 2216 2217 2218 2010-05-21: Version 2.2.11 2219 2220 Fixed crash bug in liveedit on 64 bit. 2221 2222 Use 'full compiler' when debugging is active. This should increase 2223 the density of possible break points, making single step more fine 2224 grained. This will only take effect for functions compiled after 2225 debugging has been started, so recompilation of all functions is 2226 required to get the full effect. IA32 and x64 only for now. 2227 2228 Misc. fixes to the Solaris build. 2229 2230 Added new flags --print-cumulative-gc-stat and --trace-gc-nvp. 2231 2232 Added filtering of CPU profiles by security context. 2233 2234 Fixed crash bug on ARM when running without VFP2 or VFP3. 2235 2236 Incremental performance improvements in all backends. 2237 2238 2239 2010-05-17: Version 2.2.10 2240 2241 Performance improvements in the x64 and ARM backends. 2242 2243 2244 2010-05-10: Version 2.2.9 2245 2246 Allowed Object.create to be called with a function (issue 697). 2247 2248 Fixed bug with Date.parse returning a non-NaN value when called on a 2249 non date string (issue 696). 2250 2251 Allowed unaligned memory accesses on ARM targets that support it (by 2252 Subrato K De of CodeAurora <subratokde (a] codeaurora.org>). 2253 2254 C++ API for retrieving JavaScript stack trace information. 2255 2256 2257 2010-05-05: Version 2.2.8 2258 2259 Performance improvements in the x64 and ARM backends. 2260 2261 2262 2010-05-03: Version 2.2.7 2263 2264 Added support for ES5 date time string format to Date.parse. 2265 2266 Performance improvements in the x64 backend. 2267 2268 2269 2010-04-28: Version 2.2.6 2270 2271 Added "amd64" as recognized architecture in scons build script 2272 (by Ryan Dahl <coldredlemur (a] gmail.com>). 2273 2274 Fixed bug in String search and replace with very simple RegExps. 2275 2276 Fixed bug in RegExp containing "\b^". 2277 2278 Performance improvements on all platforms. 2279 2280 2281 2010-04-26: Version 2.2.5 2282 2283 Various performance improvements (especially for ARM and x64) 2284 2285 Fixed bug in CPU profiling (http://crbug.com/42137) 2286 2287 Fixed a bug with the natives cache. 2288 2289 Fixed two bugs in the ARM code generator that can cause 2290 wrong calculations. 2291 2292 Fixed a bug that may cause a wrong result for shift operations. 2293 2294 2295 2010-04-21: Version 2.2.4 2296 2297 Fixed warnings on arm on newer GCC versions. 2298 2299 Fixed a number of minor bugs. 2300 2301 Performance improvements on all platforms. 2302 2303 2304 2010-04-14: Version 2.2.3 2305 2306 Added stack command and mem command to ARM simulator debugger. 2307 2308 Fixed scons snapshot and ARM build, and Windows X64 build issues. 2309 2310 Performance improvements on all platforms. 2311 2312 2313 2010-04-12: Version 2.2.2 2314 2315 Introduced new profiler API. 2316 2317 Fixed random number generator to produce full 32 random bits. 2318 2319 2320 2010-04-06: Version 2.2.1 2321 2322 Debugger improvements. 2323 2324 Fixed minor bugs. 2325 2326 2327 2010-03-29: Version 2.2.0 2328 2329 Fixed a few minor bugs. 2330 2331 Performance improvements for string operations. 2332 2333 2334 2010-03-26: Version 2.1.10 2335 2336 Fixed scons build issues. 2337 2338 Fixed a couple of minor bugs. 2339 2340 2341 2010-03-25: Version 2.1.9 2342 2343 Added API support for reattaching a global object to a context. 2344 2345 Extended debugger API with access to the internal debugger context. 2346 2347 Fixed Chromium crashes (issues http://crbug.com/39128 and 2348 http://crbug.com/39160) 2349 2350 2351 2010-03-24: Version 2.1.8 2352 2353 Added fine-grained garbage collection callbacks to the API. 2354 2355 Performance improvements on all platforms. 2356 2357 2358 2010-03-22: Version 2.1.7 2359 2360 Fixed issue 650. 2361 2362 Fixed a bug where __proto__ was sometimes enumerated (issue 646). 2363 2364 Performance improvements for arithmetic operations. 2365 2366 Performance improvements for string operations. 2367 2368 Print script name and line number information in stack trace. 2369 2370 2371 2010-03-17: Version 2.1.6 2372 2373 Performance improvements for arithmetic operations. 2374 2375 Performance improvements for string operations. 2376 2377 2378 2010-03-10: Version 2.1.4 2379 2380 Fixed code cache lookup for keyed IC's (issue http://crbug.com/37853). 2381 2382 Performance improvements on all platforms. 2383 2384 2385 2010-03-10: Version 2.1.3 2386 2387 Added API method for context-disposal notifications. 2388 2389 Added API method for accessing elements by integer index. 2390 2391 Added missing implementation of Uint32::Value and Value::IsUint32 2392 API methods. 2393 2394 Added IsExecutionTerminating API method. 2395 2396 Disabled strict aliasing for GCC 4.4. 2397 2398 Fixed string-concatenation bug (issue 636). 2399 2400 Performance improvements on all platforms. 2401 2402 2403 2010-02-23: Version 2.1.2 2404 2405 Fixed a crash bug caused by wrong assert. 2406 2407 Fixed a bug with register names on 64-bit V8 (issue 615). 2408 2409 Performance improvements on all platforms. 2410 2411 2412 2010-02-19: Version 2.1.1 2413 2414 [ES5] Implemented Object.defineProperty. 2415 2416 Improved profiler support. 2417 2418 Added SetPrototype method in the public V8 API. 2419 2420 Added GetScriptOrigin and GetScriptLineNumber methods to Function 2421 objects in the API. 2422 2423 Performance improvements on all platforms. 2424 2425 2426 2010-02-03: Version 2.1.0 2427 2428 Values are now always wrapped in objects when used as a receiver. 2429 (issue 223). 2430 2431 [ES5] Implemented Object.getOwnPropertyNames. 2432 2433 [ES5] Restrict JSON.parse to only accept strings that conforms to the 2434 JSON grammar. 2435 2436 Improvement of debugger agent (issue 549 and 554). 2437 2438 Fixed problem with skipped stack frame in profiles (issue 553). 2439 2440 Solaris support by Erich Ocean <erich.ocean (a] me.com> and Ryan Dahl 2441 <ry (a] tinyclouds.org>. 2442 2443 Fixed a bug that Math.round() returns incorrect results for huge 2444 integers. 2445 2446 Fixed enumeration order for objects created from some constructor 2447 functions (isue http://crbug.com/3867). 2448 2449 Fixed arithmetic on some integer constants (issue 580). 2450 2451 Numerous performance improvements including porting of previous IA-32 2452 optimizations to x64 and ARM architectures. 2453 2454 2455 2010-01-14: Version 2.0.6 2456 2457 Added ES5 Object.getPrototypeOf, GetOwnPropertyDescriptor, 2458 GetOwnProperty, FromPropertyDescriptor. 2459 2460 Fixed Mac x64 build errors. 2461 2462 Improved performance of some math and string operations. 2463 2464 Improved performance of some regexp operations. 2465 2466 Improved performance of context creation. 2467 2468 Improved performance of hash tables. 2469 2470 2471 2009-12-18: Version 2.0.5 2472 2473 Extended to upper limit of map space to allow for 7 times as many map 2474 to be allocated (issue 524). 2475 2476 Improved performance of code using closures. 2477 2478 Improved performance of some binary operations involving doubles. 2479 2480 2481 2009-12-16: Version 2.0.4 2482 2483 Added ECMAScript 5 Object.create. 2484 2485 Improved performance of Math.max and Math.min. 2486 2487 Optimized adding of strings on 64-bit platforms. 2488 2489 Improved handling of external strings by using a separate table 2490 instead of weak handles. This improves garbage collection 2491 performance and uses less memory. 2492 2493 Changed code generation for object and array literals in toplevel 2494 code to be more compact by doing more work in the runtime. 2495 2496 Fixed a crash bug triggered when garbage collection happened during 2497 generation of a callback load inline cache stub. 2498 2499 Fixed crash bug sometimes triggered when local variables shadowed 2500 parameters in functions that used the arguments object. 2501 2502 2503 2009-12-03: Version 2.0.3 2504 2505 Optimized handling and adding of strings, for-in and Array.join. 2506 2507 Heap serialization is now non-destructive. 2508 2509 Improved profiler support with information on time spend in C++ 2510 callbacks registered through the API. 2511 2512 Added commands to the debugger protocol for starting/stopping 2513 profiling. 2514 2515 Enabled the non-optimizing compiler for top-level code. 2516 2517 Changed the API to only allow strings to be set as data objects on 2518 Contexts and scripts to avoid potentially keeping global objects 2519 around for too long (issue 528). 2520 2521 OpenBSD support patch by Peter Valchev <pvalchev (a] gmail.com>. 2522 2523 Fixed bugs. 2524 2525 2526 2009-11-24: Version 2.0.2 2527 2528 Improved profiler support. 2529 2530 Fixed bug that broke compilation of d8 with readline support. 2531 2532 2533 2009-11-20: Version 2.0.1 2534 2535 Fixed crash bug in String.prototype.replace. 2536 2537 Reverted a change which caused Chromium interactive ui test 2538 failures. 2539 2540 2541 2009-11-18: Version 2.0.0 2542 2543 Added support for VFP on ARM. 2544 2545 Added TryCatch::ReThrow method to the API. 2546 2547 Reduced the size of snapshots and improved the snapshot load time. 2548 2549 Improved heap profiler support. 2550 2551 64-bit version now supported on Windows. 2552 2553 Fixed a number of debugger issues. 2554 2555 Fixed bugs. 2556 2557 2558 2009-10-29: Version 1.3.18 2559 2560 Reverted a change which caused crashes in RegExp replace. 2561 2562 Reverted a change which caused Chromium ui_tests failure. 2563 2564 2565 2009-10-28: Version 1.3.17 2566 2567 Added API method to get simple heap statistics. 2568 2569 Improved heap profiler support. 2570 2571 Fixed the implementation of the resource constraint API so it 2572 works when using snapshots. 2573 2574 Fixed a number of issues in the Windows 64-bit version. 2575 2576 Optimized calls to API getters. 2577 2578 Added valgrind notification on code modification to the 64-bit version. 2579 2580 Fixed issue where we logged shared library addresses on Windows at 2581 startup and never used them. 2582 2583 2584 2009-10-16: Version 1.3.16 2585 2586 X64: Convert smis to holding 32 bits of payload. 2587 2588 Introduced v8::Integer::NewFromUnsigned method. 2589 2590 Added missing null check in Context::GetCurrent. 2591 2592 Added trim, trimLeft and trimRight methods to String 2593 Patch by Jan de Mooij <jandemooij (a] gmail.com> 2594 2595 Implement ES5 Array.isArray 2596 Patch by Jan de Mooij <jandemooij (a] gmail.com> 2597 2598 Skip access checks for hidden properties. 2599 2600 Added String::Concat(Handle<String> left, Handle<String> right) to the 2601 V8 API. 2602 2603 Fixed GYP-based builds of V8. 2604 2605 2606 2009-10-07: Version 1.3.15 2607 2608 Expanded the maximum size of the code space to 512MB for 64-bit mode. 2609 2610 Fixed a crash bug happening when starting profiling (issue 2611 http://crbug.com/23768). 2612 2613 2614 2009-10-07: Version 1.3.14 2615 2616 Added GetRealNamedProperty to the API to lookup real properties 2617 located on the object or in the prototype chain skipping any 2618 interceptors. 2619 2620 Fixed the stack limits setting API to work correctly with threads. The 2621 stack limit now needs to be set to each thread thich is used with V8. 2622 2623 Removed the high-priority flag from IdleNotification() 2624 2625 Ensure V8 is initialized before locking and unlocking threads. 2626 2627 Implemented a new JavaScript minifier for compressing the source of 2628 the built-in JavaScript. This removes non-Open Source code from Douglas 2629 Crockford from the project. 2630 2631 Added a missing optimization in StringCharAt. 2632 2633 Fixed some flaky socket tests. 2634 2635 Change by Alexander Botero-Lowry to fix profiler sampling on FreeBSD 2636 in 64-bit mode. 2637 2638 Fixed memory leaks in the thread management code. 2639 2640 Fixed the result of assignment to a pixel array. The assigned value 2641 is now the result. 2642 2643 Error reporting for invalid left-hand sides in for-in statements, pre- 2644 and postfix count expressions, and assignments now matches the JSC 2645 behavior in Safari 4. 2646 2647 Follow the spec in disallowing function declarations without a name. 2648 2649 Always allocate code objects within a 2 GB range. On x64 architecture 2650 this is used to use near calls (32-bit displacement) in Code objects. 2651 2652 Optimized array construction ported to x64 and ARM architectures. 2653 2654 [ES5] Changed Object.keys to return strings for element indices. 2655 2656 2657 2009-09-23: Version 1.3.13 2658 2659 Fixed uninitialized memory problem. 2660 2661 Improved heap profiler support. 2662 2663 2664 2009-09-22: Version 1.3.12 2665 2666 Changed behavior of |function|.toString() on built-in functions to 2667 be compatible with other implementations. Patch by Jan de Mooij. 2668 2669 Added Object::IsDirty in the API. 2670 2671 Optimized array construction; it is now handled purely in native 2672 code. 2673 2674 [ES5] Made properties of the arguments array enumerable. 2675 2676 [ES5] Added test suite adapter for the es5conform test suite. 2677 2678 [ES5] Added Object.keys function. 2679 2680 2681 2009-09-15: Version 1.3.11 2682 2683 Fixed crash in error reporting during bootstrapping. 2684 2685 Optimized generated IA32 math code by using SSE2 instructions when 2686 available. 2687 2688 Implemented missing pieces of debugger infrastructure on ARM. The 2689 debugger is now fully functional on ARM. 2690 2691 Made 'hidden' the default visibility for gcc. 2692 2693 2694 2009-09-09: Version 1.3.10 2695 2696 Fixed profiler on Mac in 64-bit mode. 2697 2698 Optimized creation of objects from simple constructor functions on 2699 ARM. 2700 2701 Fixed a number of debugger issues. 2702 2703 Reduced the amount of memory consumed by V8. 2704 2705 2706 2009-09-02: Version 1.3.9 2707 2708 Optimized stack guard checks on ARM. 2709 2710 Optimized API operations by inlining more in the API. 2711 2712 Optimized creation of objects from simple constructor functions. 2713 2714 Enabled a number of missing optimizations in the 64-bit port. 2715 2716 Implemented native-code support for regular expressions on ARM. 2717 2718 Stopped using the 'sahf' instruction on 64-bit machines that do 2719 not support it. 2720 2721 Fixed a bug in the support for forceful termination of JavaScript 2722 execution. 2723 2724 2725 2009-08-26: Version 1.3.8 2726 2727 Changed the handling of idle notifications to allow idle 2728 notifications when V8 has not yet been initialized. 2729 2730 Fixed ARM simulator compilation problem on Windows. 2731 2732 2733 2009-08-25: Version 1.3.7 2734 2735 Reduced the size of generated code on ARM platforms by reducing 2736 the size of constant pools. 2737 2738 Changed build files to not include the 'ENV' user environment 2739 variable in the build environment. 2740 2741 Changed the handling of idle notifications. 2742 2743 2744 2009-08-21: Version 1.3.6 2745 2746 Added support for forceful termination of JavaScript execution. 2747 2748 Added low memory notification to the API. The embedding host can signal 2749 a low memory situation to V8. 2750 2751 Changed the handling of global handles (persistent handles in the API 2752 sense) to avoid issues regarding allocation of new global handles 2753 during weak handle callbacks. 2754 2755 Changed the growth policy of the young space. 2756 2757 Fixed a GC issue introduced in version 1.3.5. 2758 2759 2760 2009-08-19: Version 1.3.5 2761 2762 Optimized initialization of some arrays in the builtins. 2763 2764 Fixed mac-nm script to support filenames with spaces. 2765 2766 Support for using the V8 profiler when V8 is embedded in a Windows DLL. 2767 2768 Changed typeof RegExp from 'object' to 'function' for compatibility. 2769 Fixed bug where regexps were not callable across contexts. 2770 2771 Added context independent script compilation to the API. 2772 2773 Added API call to get the stack trace for an exception. 2774 2775 Added API for getting object mirrors. 2776 2777 Made sure that SSE3 instructions are used whenever possible even when 2778 running off a snapshot generated without using SSE3 instructions. 2779 2780 Tweaked the handling of the initial size and growth policy of the heap. 2781 2782 Added native code generation for RegExp to 64-bit version. 2783 2784 Added JavaScript debugger support to 64-bit version. 2785 2786 2787 2009-08-13: Version 1.3.4 2788 2789 Added a readline() command to the d8 shell. 2790 2791 Fixed bug in json parsing. 2792 2793 Added idle notification to the API and reduced memory on idle 2794 notifications. 2795 2796 2797 2009-08-12: Version 1.3.3 2798 2799 Fixed issue 417: incorrect %t placeholder expansion. 2800 2801 Added .gitignore file similar to Chromium's one. 2802 2803 Fixed SConstruct file to build with new logging code for Android. 2804 2805 API: added function to find instance of template in prototype 2806 chain. Inlined Object::IsInstanceOf. 2807 2808 Land change to notify valgrind when we modify code on x86. 2809 2810 Added api call to determine whether a string can be externalized. 2811 2812 Added a write() command to d8. 2813 2814 2815 2009-08-05: Version 1.3.2 2816 2817 Started new compiler infrastructure for two-pass compilation using a 2818 control flow graph constructed from the AST. 2819 2820 Profiler stack sampling for X64. 2821 2822 Safe handling of NaN to Posix platform-dependent time functions. 2823 2824 Added a new profiler control API to unify controlling various aspects 2825 of profiling. 2826 2827 Fixed issue 392. 2828 2829 2830 2009-07-30: Version 1.3.1 2831 2832 Speed improvements to accessors and interceptors. 2833 2834 Added support for capturing stack information on custom errors. 2835 2836 Added support for morphing an object into a pixel array where its 2837 indexed properties are stored in an external byte array. Values written 2838 are always clamped to the 0..255 interval. 2839 2840 Profiler on x64 now handles C/C++ functions from shared libraries. 2841 2842 Changed the debugger to avoid stepping into function.call/apply if the 2843 function is a built-in. 2844 2845 Initial implementation of constructor heap profile for JS objects. 2846 2847 More fine grained control of profiling aspects through the API. 2848 2849 Optimized the called as constructor check for API calls. 2850 2851 2852 2009-07-27: Version 1.3.0 2853 2854 Allowed RegExp objects to be called as functions (issue 132). 2855 2856 Fixed issue where global property cells would escape after 2857 detaching the global object; see http://crbug.com/16276. 2858 2859 Added support for stepping into setters and getters in the 2860 debugger. 2861 2862 Changed the debugger to avoid stopping in its own JavaScript code 2863 and in the code of built-in functions. 2864 2865 Fixed issue 345 by avoiding duplicate escaping labels. 2866 2867 Fixed ARM code generator crash in short-circuited boolean 2868 expressions and added regression tests. 2869 2870 Added an external allocation limit to avoid issues where small V8 2871 objects would hold on to large amounts of external memory without 2872 causing garbage collections. 2873 2874 Finished more of the inline caching stubs for x64 targets. 2875 2876 2877 2009-07-13: Version 1.2.14 2878 2879 Added separate paged heap space for global property cells and 2880 avoid updating the write barrier when storing into them. 2881 2882 Improved peep-hole optimization on ARM platforms by not emitting 2883 unnecessary debug information. 2884 2885 Re-enabled ICs for loads and calls that skip a global object 2886 during lookup through the prototype chain. 2887 2888 Allowed access through global proxies to use ICs. 2889 2890 Fixed issue 401. 2891 2892 2893 2009-07-09: Version 1.2.13 2894 2895 Fixed issue 397, issue 398, and issue 399. 2896 2897 Added support for breakpoint groups. 2898 2899 Fixed bugs introduced with the new global object representation. 2900 2901 Fixed a few bugs in the ARM code generator. 2902 2903 2904 2009-07-06: Version 1.2.12 2905 2906 Added stack traces collection to Error objects accessible through 2907 the e.stack property. 2908 2909 Changed RegExp parser to use a recursive data structure instead of 2910 stack-based recursion. 2911 2912 Optimized Date object construction and string concatenation. 2913 2914 Improved performance of div, mod, and mul on ARM platforms. 2915 2916 2917 2009-07-02: Version 1.2.11 2918 2919 Improved performance on IA-32 and ARM. 2920 2921 Fixed profiler sampler implementation on Mac OS X. 2922 2923 Changed the representation of global objects to improve 2924 performance of adding a lot of new properties. 2925 2926 2927 2009-06-29: Version 1.2.10 2928 2929 Improved debugger support. 2930 2931 Fixed bug in exception message reporting (issue 390). 2932 2933 Improved overall performance. 2934 2935 2936 2009-06-23: Version 1.2.9 2937 2938 Improved math performance on ARM. 2939 2940 Fixed profiler name-inference bug. 2941 2942 Fixed handling of shared libraries in the profiler tick processor 2943 scripts. 2944 2945 Fixed handling of tests that time out in the test scripts. 2946 2947 Fixed compilation on MacOS X version 10.4. 2948 2949 Fixed two bugs in the regular expression engine. 2950 2951 Fixed a bug in the string type inference. 2952 2953 Fixed a bug in the handling of 'constant function' properties. 2954 2955 Improved overall performance. 2956 2957 2958 2009-06-16: Version 1.2.8 2959 2960 Optimized math on ARM platforms. 2961 2962 Fixed two crash bugs in the handling of getters and setters. 2963 2964 Improved the debugger support by adding scope chain information. 2965 2966 Improved the profiler support by compressing log data transmitted 2967 to clients. 2968 2969 Improved overall performance. 2970 2971 2972 2009-06-08: Version 1.2.7 2973 2974 Improved debugger and profiler support. 2975 2976 Reduced compilation time by improving the handling of deferred 2977 code. 2978 2979 Optimized interceptor accesses where the property is on the object 2980 on which the interceptors is attached. 2981 2982 Fixed compilation problem on GCC 4.4 by changing the stack 2983 alignment to 16 bytes. 2984 2985 Fixed handle creation to follow stric aliasing rules. 2986 2987 Fixed compilation on FreeBSD. 2988 2989 Introduced API for forcing the deletion of a property ignoring 2990 interceptors and attributes. 2991 2992 2993 2009-05-29: Version 1.2.6 2994 2995 Added a histogram recording hit rates at different levels of the 2996 compilation cache. 2997 2998 Added stack overflow check for the RegExp analysis phase. Previously a 2999 very long regexp graph could overflow the stack with recursive calls. 3000 3001 Use a dynamic buffer when collecting log events in memory. 3002 3003 Added start/stop events to the profiler log. 3004 3005 Fixed infinite loop which could happen when setting a debug break while 3006 executing a RegExp compiled to native code. 3007 3008 Fixed handling of lastIndexOf called with negative index (issue 351). 3009 3010 Fixed irregular crash in profiler test (issue 358). 3011 3012 Fixed compilation issues with some versions of gcc. 3013 3014 3015 2009-05-26: Version 1.2.5 3016 3017 Fixed bug in initial boundary check for Boyer-Moore text 3018 search (issue 349). 3019 3020 Fixed compilation issues with MinGW and gcc 4.3+ and added support 3021 for armv7 and cortex-a8 architectures. Patches by Lei Zhang and 3022 Craig Schlenter. 3023 3024 Added a script cache to the debugger. 3025 3026 Optimized compilation performance by improving internal data 3027 structures and avoiding expensive property load optimizations for 3028 code that's infrequently executed. 3029 3030 Exposed the calling JavaScript context through the static API 3031 function Context::GetCalling(). 3032 3033 3034 2009-05-18: Version 1.2.4 3035 3036 Improved performance of floating point number allocation for ARM 3037 platforms. 3038 3039 Fixed crash when using the instanceof operator on functions with 3040 number values in their prototype chain (issue 341). 3041 3042 Optimized virtual frame operations in the code generator to speed 3043 up compilation time and allocated the frames in the zone. 3044 3045 Made the representation of virtual frames and jump targets in the 3046 code generator much more compact. 3047 3048 Avoided linear search for non-locals in scope code when resolving 3049 variables inside with and eval scopes. 3050 3051 Optimized lexical scanner by dealing with whitespace as part of 3052 the token scanning instead of as a separate step before it. 3053 3054 Changed the scavenging collector so that promoted objects do not 3055 reside in the old generation while their remembered set is being 3056 swept for pointers into the young generation. 3057 3058 Fixed numeric overflow handling when compiling count operations. 3059 3060 3061 2009-05-11: Version 1.2.3 3062 3063 Fixed bug in reporting of out-of-memory situations. 3064 3065 Introduced hidden prototypes on certain builtin prototype objects 3066 such as String.prototype to emulate JSC's behavior of restoring 3067 the original function when deleting functions from those prototype 3068 objects. 3069 3070 Fixed crash bug in the register allocator. 3071 3072 3073 2009-05-04: Version 1.2.2 3074 3075 Fixed bug in array sorting for sparse arrays (issue 326). 3076 3077 Added support for adding a soname when building a shared library 3078 on Linux (issue 151). 3079 3080 Fixed bug caused by morphing internal ASCII strings to external 3081 two-byte strings. Slices over ASCII strings have to forward ASCII 3082 checks to the underlying buffer string. 3083 3084 Allowed API call-as-function handlers to be called as 3085 constructors. 3086 3087 Fixed a crash bug where an external string was disposed but a 3088 slice of the external string survived as a symbol. 3089 3090 3091 2009-04-27: Version 1.2.1 3092 3093 Added EcmaScript 5 JSON object. 3094 3095 Fixed bug in preemption support on ARM. 3096 3097 3098 2009-04-23: Version 1.2.0 3099 3100 Optimized floating-point operations on ARM. 3101 3102 Added a number of extensions to the debugger API. 3103 3104 Changed the enumeration order for unsigned integer keys to always 3105 be numerical order. 3106 3107 Added a "read" extension to the shell sample. 3108 3109 Added support for Array.prototype.reduce and 3110 Array.prototype.reduceRight. 3111 3112 Added an option to the SCons build to control Microsoft Visual C++ 3113 link-time code generation. 3114 3115 Fixed a number of bugs (in particular issue 315, issue 316, 3116 issue 317 and issue 318). 3117 3118 3119 2009-04-15: Version 1.1.10 3120 3121 Fixed crash bug that occurred when loading a const variable in the 3122 presence of eval. 3123 3124 Allowed using with and eval in registered extensions in debug mode 3125 by fixing bogus assert. 3126 3127 Fixed the source position for function returns to enable the 3128 debugger to break there. 3129 3130 3131 2009-04-14: Version 1.1.9 3132 3133 Made the stack traversal code in the profiler robust by avoiding 3134 to look into the heap. 3135 3136 Added name inferencing for anonymous functions to facilitate 3137 debugging and profiling. 3138 3139 Re-enabled stats timers in the developer shell (d8). 3140 3141 Fixed issue 303 by avoiding to shortcut cons-symbols. 3142 3143 3144 2009-04-11: Version 1.1.8 3145 3146 Changed test-debug/ThreadedDebugging to be non-flaky (issue 96). 3147 3148 Fixed step-in handling for Function.prototype.apply and call in 3149 the debugger (issue 269). 3150 3151 Fixed v8::Object::DeleteHiddenValue to not bail out when there 3152 are no hidden properties. 3153 3154 Added workaround for crash bug, where external symbol table 3155 entries with deleted resources would lead to NPEs when looking 3156 up in the symbol table. 3157 3158 3159 2009-04-07: Version 1.1.7 3160 3161 Added support for easily importing additional environment 3162 variables into the SCons build. 3163 3164 Optimized strict equality checks. 3165 3166 Fixed crash in indexed setters on objects without a corresponding 3167 getter (issue 298). 3168 3169 Re-enabled script compilation cache. 3170 3171 3172 2009-04-01: Version 1.1.6 3173 3174 Reverted an unsafe code generator change. 3175 3176 3177 2009-04-01: Version 1.1.5 3178 3179 Fixed bug that caused function literals to not be optimized as 3180 much as other functions. 3181 3182 Improved profiler support. 3183 3184 Fixed a crash bug in connection with debugger unloading. 3185 3186 Fixed a crash bug in the code generator caused by losing the 3187 information that a frame element was copied. 3188 3189 Fixed an exception propagation bug that could cause non-null 3190 return values when exceptions were thrown. 3191 3192 3193 2009-03-30: Version 1.1.4 3194 3195 Optimized String.prototype.match. 3196 3197 Improved the stack information in profiles. 3198 3199 Fixed bug in ARM port making it possible to compile the runtime 3200 system for thumb mode again. 3201 3202 Implemented a number of optimizations in the code generator. 3203 3204 Fixed a number of memory leaks in tests. 3205 3206 Fixed crash bug in connection with script source code and external 3207 strings. 3208 3209 3210 2009-03-24: Version 1.1.3 3211 3212 Fixed assertion failures in compilation of loop conditions. 3213 3214 Removed STL dependency from developer shell (d8). 3215 3216 Added infrastructure for protecting the V8 heap from corruption 3217 caused by memory modifications from the outside. 3218 3219 3220 2009-03-24: Version 1.1.2 3221 3222 Improved frame merge code generated by the code generator. 3223 3224 Optimized String.prototype.replace. 3225 3226 Implemented __defineGetter__ and __defineSetter__ for properties 3227 with integer keys on non-array objects. 3228 3229 Improved debugger and profiler support. 3230 3231 Fixed a number of portability issues to allow compilation for 3232 smaller ARM devices. 3233 3234 Exposed object cloning through the API. 3235 3236 Implemented hidden properties. This is used to expose an identity 3237 hash for objects through the API. 3238 3239 Implemented restarting of regular expressions if their input 3240 string changes representation during preemption. 3241 3242 Fixed a code generator bug that could cause assignments in loops 3243 to be ignored if using continue to break out of the loop (issue 3244 284). 3245 3246 3247 2009-03-12: Version 1.1.1 3248 3249 Fixed an assertion in the new compiler to take stack overflow 3250 exceptions into account. 3251 3252 Removed exception propagation code that could cause crashes. 3253 3254 Fixed minor bug in debugger line number computations. 3255 3256 8-byte align the C stack on Linux and Windows to speed up floating 3257 point computations. 3258 3259 3260 2009-03-12: Version 1.1.0 3261 3262 Improved code generation infrastructure by doing simple register 3263 allocation and constant folding and propagation. 3264 3265 Optimized regular expression matching by avoiding to create 3266 intermediate string arrays and by flattening nested array 3267 representations of RegExp data. 3268 3269 Traverse a few stack frames when recording profiler samples to 3270 include partial call graphs in the profiling output. 3271 3272 Added support for using OProfile to profile generated code. 3273 3274 Added remote debugging support to the D8 developer shell. 3275 3276 Optimized creation of nested literals like JSON objects. 3277 3278 Fixed a bug in garbage collecting unused maps and turned it on by 3279 default (--collect-maps). 3280 3281 Added support for running tests under Valgrind. 3282 3283 3284 2009-02-27: Version 1.0.3 3285 3286 Optimized double-to-integer conversions in bit operations by using 3287 SSE3 instructions if available. 3288 3289 Optimized initialization sequences that store to multiple 3290 properties of the same object. 3291 3292 Changed the D8 debugger frontend to use JSON messages. 3293 3294 Force garbage collections when disposing contexts. 3295 3296 Align code objects at 32-byte boundaries. 3297 3298 3299 2009-02-25: Version 1.0.2 3300 3301 Improved profiling support by performing simple call stack 3302 sampling for ticks and by fixing a bug in the logging of code 3303 addresses. 3304 3305 Fixed a number of debugger issues. 3306 3307 Optimized code that uses eval. 3308 3309 Fixed a couple of bugs in the regular expression engine. 3310 3311 Reduced the size of generated code for certain regular expressions. 3312 3313 Removed JSCRE completely. 3314 3315 Fixed issue where test could not be run if there was a dot in the 3316 checkout path. 3317 3318 3319 2009-02-13: Version 1.0.1 3320 3321 Fixed two crash-bugs in irregexp (issue 231 and 233). 3322 3323 Fixed a number of minor bugs (issue 87, 227 and 228). 3324 3325 Added support for morphing strings to external strings on demand 3326 to avoid having to create copies in the embedding code. 3327 3328 Removed experimental support for external symbol callbacks. 3329 3330 3331 2009-02-09: Version 1.0.0 3332 3333 Fixed crash-bug in the code generation for case independent 16 bit 3334 backreferences. 3335 3336 Made shells more robust in the presence of string conversion 3337 failures (issue 224). 3338 3339 Fixed a potential infinite loop when attempting to resolve 3340 eval (issue 221). 3341 3342 Miscellaneous fixes to the new regular expression engine. 3343 3344 Reduced binary by stripping unneeded text from JavaScript library and 3345 minifying some JavaScript files. 3346 3347 3348 2009-01-27: Version 0.4.9 3349 3350 Enabled new regular expression engine. 3351 3352 Made a number of changes to the debugger protocol. 3353 3354 Fixed a number of bugs in the preemption support. 3355 3356 Added -p option to the developer shell to run files in parallel 3357 using preemption. 3358 3359 Fixed a number of minor bugs (including issues 176, 187, 189, 192, 3360 193, 198 and 201). 3361 3362 Fixed a number of bugs in the serialization/deserialization 3363 support for the ARM platform. 3364 3365 3366 2009-01-19: Version 0.4.8.1 3367 3368 Minor patch to debugger support. 3369 3370 3371 2009-01-16: Version 0.4.8 3372 3373 Fixed string length bug on ARM (issue 171). 3374 3375 Made most methods in the API const. 3376 3377 Optimized object literals by improving data locality. 3378 3379 Fixed bug that caused incomplete functions to be cached in case of 3380 stack overflow exceptions. 3381 3382 Fixed bugs that caused catch variables and variables introduced by 3383 eval to behave incorrectly when using accessors (issues 186, 190 3384 and 191). 3385 3386 3387 2009-01-06: Version 0.4.7 3388 3389 Minor bugfixes and optimizations. 3390 3391 Added command line debugger to D8 shell. 3392 3393 Fixed subtle bug that caused the wrong 'this' to be used when 3394 calling a caught function in a catch clause. 3395 3396 Inline array loads within loops directly in the code instead of 3397 always calling a stub. 3398 3399 3400 2008-12-11: Version 0.4.6 3401 3402 Fixed exception reporting bug where certain exceptions were 3403 incorrectly reported as uncaught. 3404 3405 Improved the memory allocation strategy used during compilation to 3406 make running out of memory when compiling huge scripts less 3407 likely. 3408 3409 Optimized String.replace by avoiding the construction of certain 3410 sub strings. 3411 3412 Fixed bug in code generation for large switch statements on ARM. 3413 3414 Fixed bug that caused V8 to change the global object template 3415 passed in by the user. 3416 3417 Changed the API for creating object groups used during garbage 3418 collection. Entire object groups are now passed to V8 instead of 3419 individual members of the groups. 3420 3421 3422 2008-12-03: Version 0.4.5 3423 3424 Added experimental API support for allocating V8 symbols as 3425 external strings. 3426 3427 Fixed bugs in debugging support on ARM. 3428 3429 Changed eval implementation to correctly detect whether or not a 3430 call to eval is aliased. 3431 3432 Fixed bug caused by a combination of the compilation cache and 3433 dictionary probing in native code. The bug caused us to sometimes 3434 call functions that had not yet been compiled. 3435 3436 Added platform support for FreeBSD. 3437 3438 Added support for building V8 on Windows with either the shared or 3439 static version of MSVCRT 3440 3441 Added the v8::jscre namespace around the jscre functions to avoid 3442 link errors (duplicate symbols) when building Google Chrome. 3443 3444 Added support for calling a JavaScript function with the current 3445 debugger execution context as its argument to the debugger 3446 interface. 3447 3448 Changed the type of names of counters from wchar_t to char. 3449 3450 Changed the Windows system call used to compute daylight savings 3451 time. The system call that we used to use became four times 3452 slower on WinXP SP3. 3453 3454 Added support in the d8 developer shell for memory-mapped counters 3455 and added a stats-viewer tool. 3456 3457 Fixed bug in upper/lower case mappings (issue 149). 3458 3459 3460 2008-11-17: Version 0.4.4 3461 3462 Reduced code size by using shorter instruction encoding when 3463 possible. 3464 3465 Added a --help option to the shell sample and to the d8 shell. 3466 3467 Added visual studio project files for building the ARM simulator. 3468 3469 Fixed a number of ARM simulator issues. 3470 3471 Fixed bug in out-of-memory handling on ARM. 3472 3473 Implemented shell support for passing arguments to a script from 3474 the command line. 3475 3476 Fixed bug in date code that made certain date functions return -0 3477 instead of 0 for dates before the epoch. 3478 3479 Restricted applications of eval so it can only be used in the 3480 context of the associated global object. 3481 3482 Treat byte-order marks as whitespace characters. 3483 3484 3485 2008-11-04: Version 0.4.3 3486 3487 Added support for API accessors that prohibit overwriting by 3488 accessors defined in JavaScript code by using __defineGetter__ and 3489 __defineSetter__. 3490 3491 Improved handling of conditionals in test status files. 3492 3493 Introduced access control in propertyIsEnumerable. 3494 3495 Improved performance of some string operations by caching 3496 information about the type of the string between operations. 3497 3498 Fixed bug in fast-case code for switch statements that only have 3499 integer labels. 3500 3501 3502 2008-10-30: Version 0.4.2 3503 3504 Improved performance of Array.prototype.concat by moving the 3505 implementation to C++ (issue 123). 3506 3507 Fixed heap growth policy to avoid growing old space to its maximum 3508 capacity before doing a garbage collection and fixed issue that 3509 would lead to artificial out of memory situations (issue 129). 3510 3511 Fixed Date.prototype.toLocaleDateString to return the date in the 3512 same format as WebKit. 3513 3514 Added missing initialization checks to debugger API. 3515 3516 Added removing of unused maps during GC. 3517 3518 3519 2008-10-28: Version 0.4.1 3520 3521 Added caching of RegExp data in compilation cache. 3522 3523 Added Visual Studio project file for d8 shell. 3524 3525 Fixed function call performance regression introduced in version 3526 0.4.0 when splitting the global object in two parts (issue 120). 3527 3528 Fixed issue 131 by checking for empty handles before throwing and 3529 reporting exceptions. 3530 3531 3532 2008-10-23: Version 0.4.0 3533 3534 Split the global object into two parts: The state holding global 3535 object and the global object proxy. 3536 3537 Fixed bug that affected the value of an assignment to an element 3538 in certain cases (issue 116). 3539 3540 Added GetPropertyNames functionality (issue 33) and extra Date 3541 functions (issue 77) to the API. 3542 3543 Changed WeakReferenceCallback to take a Persistent<Value> instead 3544 of a Persistent<Object> (issue 101). 3545 3546 Fixed issues with message reporting for exceptions in try-finally 3547 blocks (issues 73 and 75). 3548 3549 Optimized flattening of strings and string equality checking. 3550 3551 Improved Boyer-Moore implementation for faster indexOf operations. 3552 3553 Added development shell (d8) which includes counters and 3554 completion support. 3555 3556 Fixed problem with the receiver passed to functions called from 3557 eval (issue 124). 3558 3559 3560 2008-10-16: Version 0.3.5 3561 3562 Improved string hash-code distribution by excluding bit-field bits 3563 from the hash-code. 3564 3565 Changed string search algorithm used in indexOf from KMP to 3566 Boyer-Moore. 3567 3568 Improved the generated code for the instanceof operator. 3569 3570 Improved performance of slow-case string equality checks by 3571 specializing the code based on the string representation. 3572 3573 Improve the handling of out-of-memory situations (issue 70). 3574 3575 Improved performance of strict equality checks. 3576 3577 Improved profiler output to make it easier to see anonymous 3578 functions. 3579 3580 Improved performance of slow-case keyed loads. 3581 3582 Improved property access performance by allocating a number of 3583 properties in the front object. 3584 3585 Changed the toString behavior on the built-in object constructors 3586 to print [native code] instead of the actual source. Some web 3587 applications do not like constructors with complex toString 3588 results. 3589 3590 3591 2008-10-06: Version 0.3.4 3592 3593 Changed Array.prototype.sort to use quick sort. 3594 3595 Fixed code generation issue where leaving a finally block with 3596 break or continue would accumulate elements on the expression 3597 stack (issue 86). 3598 3599 Made sure that the name accessor on functions returns the expected 3600 names for builtin JavaScript functions and C++ callback functions. 3601 3602 Added fast case code for extending the property storage array of 3603 JavaScript objects. 3604 3605 Ported switch statement optimizations introduced in version 0.3.3 3606 to the ARM code generator. 3607 3608 Allowed GCC to use strict-aliasing rules when compiling. 3609 3610 Improved performance of arguments object allocation by taking care 3611 of arguments adaptor frames in the generated code. 3612 3613 Updated the V8 benchmark suite to version 2. 3614 3615 3616 2008-09-25: Version 0.3.3 3617 3618 Improved handling of relocation information to enable more 3619 peep-hole optimizations. 3620 3621 Optimized switch statements where all labels are constant small 3622 integers. 3623 3624 Optimized String.prototype.indexOf for common cases. 3625 3626 Fixed more build issues (issue 80). 3627 3628 Fixed a couple of profiler issues. 3629 3630 Fixed bug where the body of a function created using the Function 3631 constructor was not allowed to end with a single-line comment 3632 (issue 85). 3633 3634 Improved handling of object literals by canonicalizing object 3635 literal maps. This will allow JSON objects with the same set of 3636 properties to share the same map making inline caching work better 3637 for JSON objects. 3638 3639 3640 2008-09-17: Version 0.3.2 3641 3642 Generalized the EvalCache into a CompilationCache and enabled it 3643 for scripts too. The current strategy is to retire all entries 3644 whenever a mark-sweep collection is started. 3645 3646 Fixed bug where switch statements containing only a default case 3647 would lead to an unbalanced stack (issue 69). 3648 3649 Fixed bug that made access to the function in a named function 3650 expression impossible in certain situations (issue 24). 3651 3652 Fixed even more build issues. 3653 3654 Optimized calling conventions on ARM. The conventions on ARM and 3655 IA-32 now match. 3656 3657 Removed static initializers for flags and counters. 3658 3659 Improved inline caching behavior for uncommon cases where lazily 3660 loading Date and RegExp code could force certain code paths go 3661 megamorphic. 3662 3663 Removed arguments adaption for builtins written in C++. This 3664 makes Array.prototype.push and Array.prototype.pop slightly 3665 faster. 3666 3667 3668 2008-09-11: Version 0.3.1 3669 3670 Fixed a number of build issues. 3671 3672 Fixed problem with missing I-cache flusing on ARM. 3673 3674 Changed space layout in memory management by splitting up 3675 code space into old data space and code space. 3676 3677 Added utf-8 conversion support to the API (issue 57). 3678 3679 Optimized repeated calls to eval with the same strings. These 3680 repeated calls are common in web applications. 3681 3682 Added Xcode project file. 3683 3684 Optimized a couple of Array operation. 3685 3686 Fixed parser bug by checking for end-of-string when parsing break 3687 and continue (issue 35). 3688 3689 Fixed problem where asian characters were not categorized as 3690 letters. 3691 3692 Fixed bug that disallowed calling functions fetched from an array 3693 using a string as an array index (issue 32). 3694 3695 Fixed bug where the internal field count on object templates were 3696 sometimes ignored (issue 54). 3697 3698 Added -f option to the shell sample for compatibility with other 3699 engines (issue 18). 3700 3701 Added source info to TryCatches in the API. 3702 3703 Fixed problem where the seed for the random number generator was 3704 clipped in a double to unsigned int conversion. 3705 3706 Fixed bug where cons string symbols were sometimes converted to 3707 non-symbol flat strings during GC. 3708 3709 Fixed bug in error reporting when attempting to convert null to an 3710 object. 3711 3712 3713 2008-09-04: Version 0.3.0 3714 3715 Added support for running tests on the ARM simulator. 3716 3717 Fixed bug in the 'in' operator where negative indices were not 3718 treated correctly. 3719 3720 Fixed build issues on gcc-4.3.1. 3721 3722 Changed Date.prototype.toLocaleTimeString to not print the 3723 timezone part of the time. 3724 3725 Renamed debug.h to v8-debug.h to reduce the risk of name conflicts 3726 with user code. 3727 3728 3729 2008-09-02: Version 0.2.5 3730 3731 Renamed the top level directory 'public' to 'include'. 3732 3733 Added 'env' option to the SCons build scripts to support 3734 overriding the ENV part of the build environment. This is mostly 3735 to support Windows builds in cases where SCons cannot find the 3736 correct paths to the Windows SDK, as these paths cannot be passed 3737 through shell environment variables. 3738 3739 Enabled "Buffer Security Check" on for the Windows SCons build and 3740 added the linker option /OPT:ICF as an optimization. 3741 3742 Added the V8 benchmark suite to the repository. 3743 3744 3745 2008-09-01: Version 0.2.4 3746 3747 Included mjsunit JavaScript test suite and C++ unit tests. 3748 3749 Changed the shell sample to not print the result of executing a 3750 script provided on the command line. 3751 3752 Fixed issue when building samples on Windows using a shared V8 3753 library. Added visibility option on Linux build which makes the 3754 generated library 18% smaller. 3755 3756 Changed build system to accept multiple build modes in one build 3757 and generate separate objects, libraries and executables for each 3758 mode. 3759 3760 Removed deferred negation optimization (a * -b => -(a * b)) since 3761 this visibly changes operand conversion order. 3762 3763 Improved parsing performance by introducing stack guard in 3764 preparsing. Without a stack guard preparsing always bails out 3765 with stack overflow. 3766 3767 Changed shell sample to take flags directly from the command-line. 3768 Added API call that implements this. 3769 3770 Added load, quit and version functions to the shell sample so it's 3771 easier to run benchmarks and tests. 3772 3773 Fixed issue with building samples and cctests on 64-bit machines. 3774 3775 Fixed bug in the runtime system where the prototype chain was not 3776 always searched for a setter when setting a property that does not 3777 exist locally. 3778 3779 3780 2008-08-14: Version 0.2.3 3781 3782 Improved performance of garbage collection by moving the 3783 function that updates pointers during compacting collection 3784 into the updating visitor. This gives the compiler a better 3785 chance to inline and avoid a function call per (potential) 3786 pointer. 3787 3788 Extended the shell sample with a --runtime-flags option. 3789 3790 Added Visual Studio project files for the shell.cc and 3791 process.cc samples. 3792 3793 3794 2008-08-13: Version 0.2.2 3795 3796 Improved performance of garbage collection by changing the way 3797 we use the marking stack in the event of stack overflow during 3798 full garbage collection and by changing the way we mark roots. 3799 3800 Cleaned up ARM version by removing top of stack caching and by 3801 introducing push/pop elimination. 3802 3803 Cleaned up the way runtime functions are called to allow 3804 runtime calls with no arguments. 3805 3806 Changed Windows build options to make sure that exceptions are 3807 disabled and that optimization flags are enabled. 3808 3809 Added first version of Visual Studio project files. 3810 3811 3812 2008-08-06: Version 0.2.1 3813 3814 Improved performance of unary addition by avoiding runtime calls. 3815 3816 Fixed the handling of '>' and '<=' to use right-to-left conversion 3817 and left-to-right evaluation as specified by ECMA-262. 3818 3819 Fixed a branch elimination bug on the ARM platform where incorrect 3820 code was generated because of overly aggressive branch 3821 elimination. 3822 3823 Improved performance of code that repeatedly assigns the same 3824 function to the same property of different objects with the same 3825 map. 3826 3827 Untangled DEBUG and ENABLE_DISASSEMBLER defines. The disassembler 3828 no longer expects DEBUG to be defined. 3829 3830 Added platform-nullos.cc to serve as the basis for new platform 3831 implementations. 3832 3833 3834 2008-07-30: Version 0.2.0 3835 3836 Changed all text files to have native svn:eol-style. 3837 3838 Added a few samples and support for building them. The samples 3839 include a simple shell that can be used to benchmark and test V8. 3840 3841 Changed V8::GetVersion to return the version as a string. 3842 3843 Added source for lazily loaded scripts to snapshots and made 3844 serialization non-destructive. 3845 3846 Improved ARM support by fixing the write barrier code to use 3847 aligned loads and stores and by removing premature locals 3848 optimization that relied on broken support for callee-saved 3849 registers (removed). 3850 3851 Refactored the code for marking live objects during garbage 3852 collection and the code for allocating objects in paged 3853 spaces. Introduced an abstraction for the map word of a heap- 3854 allocated object and changed the memory allocator to allocate 3855 executable memory only for spaces that may contain code objects. 3856 3857 Moved StringBuilder to utils.h and ScopedLock to platform.h, where 3858 they can be used by debugging and logging modules. Added 3859 thread-safe message queues for dealing with debugger events. 3860 3861 Fixed the source code reported by toString for certain builtin 3862 empty functions and made sure that the prototype property of a 3863 function is enumerable. 3864 3865 Improved performance of converting values to condition flags in 3866 generated code. 3867 3868 Merged disassembler-{arch} files. 3869 3870 3871 2008-07-28: Version 0.1.4 3872 3873 Added support for storing JavaScript stack traces in a stack 3874 allocated buffer to make it visible in shallow core dumps. 3875 Controlled by the --preallocate-message-memory flag which is 3876 disabled by default. 3877 3878 3879 2008-07-25: Version 0.1.3 3880 3881 Fixed bug in JSObject::GetPropertyAttributePostInterceptor where 3882 map transitions would count as properties. 3883 3884 Allowed aliased eval invocations by treating them as evals in the 3885 global context. This may change in the future. 3886 3887 Added support for accessing the last entered context through the 3888 API and renamed Context::Current to Context::GetCurrent and 3889 Context::GetSecurityContext to Context::GetCurrentSecurityContext. 3890 3891 Fixed bug in the debugger that would cause the debugger scripts to 3892 be recursively loaded and changed all disabling of interrupts to 3893 be block-structured. 3894 3895 Made snapshot data read-only to allow it to be more easily shared 3896 across multiple users of V8 when linked as a shared library. 3897 3898 3899 2008-07-16: Version 0.1.2 3900 3901 Fixed building on Mac OS X by recognizing i386 and friends as 3902 IA-32 platforms. 3903 3904 Added propagation of stack overflow exceptions that occur while 3905 compiling nested functions. 3906 3907 Improved debugger with support for recursive break points and 3908 handling of exceptions that occur in the debugger JavaScript code. 3909 3910 Renamed GetInternal to GetInternalField and SetInternal to 3911 SetInternalField in the API and moved InternalFieldCount and 3912 SetInternalFieldCount from FunctionTemplate to ObjectTemplate. 3913 3914 3915 2008-07-09: Version 0.1.1 3916 3917 Fixed bug in stack overflow check code for IA-32 targets where a 3918 non-tagged value in register eax was pushed to the stack. 3919 3920 Fixed potential quadratic behavior when converting strings to 3921 numbers. 3922 3923 Fixed bug where the return value from Object::SetProperty could 3924 end up being the property holder instead of the written value. 3925 3926 Improved debugger support by allowing nested break points and by 3927 dealing with stack-overflows when compiling functions before 3928 setting break points in them. 3929 3930 3931 2008-07-03: Version 0.1.0 3932 3933 Initial export. 3934 3935 # Local Variables: 3936 # mode:text 3937 # End: 3938
