1 2011-04-13: Version 3.2.10 2 3 Fixed bug in external float arrays on ARM (issue 1323). 4 5 Minor performance improvements and bug fixes. 6 7 8 2011-04-11: Version 3.2.9 9 10 Removed support for ABI prior to EABI on ARM. 11 12 Fixed multiple crash bugs. 13 14 Added GCMole to the repository, a simple static analysis tool that 15 searches for GC-unsafe evaluation order dependent callsites. 16 17 Made preparser API be exported in shared libraries. 18 19 Fixed multiple issues in EcmaScript 5 strict mode implementation. 20 21 Fixed mutable __proto__ property if object is not extensible 22 (Issue 1309). 23 24 Fixed auto suspension of the sampler thread. 25 26 27 2011-04-06: Version 3.2.8 28 29 Exposed WebGL typed array constructors in the shell sample. 30 31 Performance improvements on all platforms. 32 33 34 2011-04-04: Version 3.2.7 35 36 Disabled the original 'classic' V8 code generator. Crankshaft is 37 now the default on all platforms. 38 39 Changed the heap profiler to use more descriptive names. 40 41 Performance and stability improvements to isolates on all platforms. 42 43 44 2011-03-30: Version 3.2.6 45 46 Fixed xcode build warning in shell.cc (out of order initialization). 47 48 Fixed null-pointer dereference in the compiler when running without 49 SSE3 support (Chromium issue 77654). 50 51 Fixed x64 compilation error due to some dead code. (Issue 1286) 52 53 Introduced scons target to build the preparser stand-alone example. 54 55 Made FreeBSD build and pass all tests. 56 57 58 2011-03-28: Version 3.2.5 59 60 Fixed build with Irregexp interpreter (issue 1266). 61 62 Added Crankshaft support for external arrays. 63 64 Fixed two potential crash bugs. 65 66 67 2011-03-23: Version 3.2.4 68 69 Added isolates which allows several V8 instances in the same process. 70 This is controlled through the new Isolate class in the API. 71 72 Implemented more of EcmaScript 5 strict mode. 73 74 Reduced the time it takes to make detailed heap snapshot. 75 76 Added a number of commands to the ARM simulator and enhanced the ARM 77 disassembler. 78 79 80 2011-03-17: Version 3.2.3 81 82 Fixed a number of crash bugs. 83 84 Fixed Array::New(length) to return an array with a length (issue 1256). 85 86 Fixed FreeBSD build. 87 88 Changed __defineGetter__ to not throw (matching the behavior of Safari). 89 90 Implemented more of EcmaScript 5 strict mode. 91 92 Improved Crankshaft performance on all platforms. 93 94 95 2011-03-14: Version 3.2.2 96 97 Fixed a number of crash and correctness bugs. 98 99 Improved Crankshaft performance on all platforms. 100 101 Fixed Crankshaft on Solaris/Illumos. 102 103 104 2011-03-10: Version 3.2.1 105 106 Fixed a number of crash bugs. 107 108 Improved Crankshaft for x64 and ARM. 109 110 Implemented more of EcmaScript 5 strict mode. 111 112 113 2011-03-07: Version 3.2.0 114 115 Fixed a number of crash bugs. 116 117 Turned on Crankshaft by default on x64 and ARM. 118 119 Improved Crankshaft for x64 and ARM. 120 121 Implemented more of EcmaScript 5 strict mode. 122 123 124 2011-03-02: Version 3.1.8 125 126 Fixed a number of crash bugs. 127 128 Improved Crankshaft for x64 and ARM. 129 130 Implemented more of EcmaScript 5 strict mode. 131 132 Fixed issue with unaligned reads and writes on ARM. 133 134 Improved heap profiler support. 135 136 137 2011-02-28: Version 3.1.7 138 139 Fixed a number of crash bugs. 140 141 Improved Crankshaft for x64 and ARM. 142 143 Fixed implementation of indexOf/lastIndexOf for sparse 144 arrays (http://crbug.com/73940). 145 146 Fixed bug in map space compaction (http://crbug.com/59688). 147 148 Added support for direct getter accessors calls on ARM. 149 150 151 2011-02-24: Version 3.1.6 152 153 Fixed a number of crash bugs. 154 155 Added support for Cygwin (issue 64). 156 157 Improved Crankshaft for x64 and ARM. 158 159 Added Crankshaft support for stores to pixel arrays. 160 161 Fixed issue in CPU profiler with Crankshaft. 162 163 164 2011-02-16: Version 3.1.5 165 166 Change RegExp parsing to disallow /(*)/. 167 168 Added GDB JIT support for ARM. 169 170 Fixed several crash bugs. 171 172 Performance improvements on the IA32 platform. 173 174 175 2011-02-14: Version 3.1.4 176 177 Fixed incorrect compare of prototypes of the global object (issue 178 1082). 179 180 Fixed a bug in optimizing calls to global functions (issue 1106). 181 182 Made optimized Function.prototype.apply safe for non-JSObject first 183 arguments (issue 1128). 184 185 Fixed an error related to element accessors on Object.prototype and 186 parser errors (issue 1130). 187 188 Fixed a bug in sorting an array with large array indices (issue 1131). 189 190 Properly treat exceptions thrown while compiling (issue 1132). 191 192 Fixed bug in register requirements for function.apply (issue 1133). 193 194 Fixed a representation change bug in the Hydrogen graph construction 195 (issue 1134). 196 197 Fixed the semantics of delete on parameters (issue 1136). 198 199 Fixed a optimizer bug related to moving instructions with side effects 200 (issue 1138). 201 202 Added support for the global object in Object.keys (issue 1150). 203 204 Fixed incorrect value for Math.LOG10E 205 (issue http://code.google.com/p/chromium/issues/detail?id=72555) 206 207 Performance improvements on the IA32 platform. 208 209 Implement assignment to undefined reference in ES5 Strict Mode. 210 211 212 2011-02-09: Version 3.1.3 213 214 Fixed a bug triggered by functions with huge numbers of declared 215 arguments. 216 217 Fixed zap value aliasing a real object - debug mode only (issue 866). 218 219 Fixed issue where Array.prototype.__proto__ had been set to null 220 (issue 1121). 221 222 Fixed stability bugs in Crankshaft for x86. 223 224 225 2011-02-07: Version 3.1.2 226 227 Added better security checks when accessing properties via 228 Object.getOwnPropertyDescriptor. 229 230 Fixed bug in Object.defineProperty and related access bugs (issues 231 992, 1083 and 1092). 232 233 Added LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to ease 234 copyright notice generation for embedders. 235 236 237 2011-02-02: Version 3.1.1 238 239 Perform security checks before fetching the value in 240 Object.getOwnPropertyDescriptor. 241 242 Fixed a bug in Array.prototype.splice triggered by passing no 243 arguments. 244 245 Fixed bugs in -0 in arithmetic and in Math.pow. 246 247 Fixed bugs in the register allocator and in switching from optimized 248 to unoptimized code. 249 250 251 2011-01-31: Version 3.1.0 252 253 Performance improvements on all platforms. 254 255 256 2011-01-28: Version 3.0.12 257 258 Added support for strict mode parameter and object property 259 validation. 260 261 Fixed a couple of crash bugs. 262 263 264 2011-01-25: Version 3.0.11 265 266 Fixed a bug in deletion of lookup slots that could cause global 267 variables to be accidentally deleted (http://crbug.com/70066). 268 269 Added support for strict mode octal literal verification. 270 271 Fixed a couple of crash bugs (issues 1070 and 1071). 272 273 274 2011-01-24: Version 3.0.10 275 276 Fixed External::Wrap for 64-bit addresses (issue 1037). 277 278 Fixed incorrect .arguments variable proxy handling in the full 279 code generator (issue 1060). 280 281 Introduced partial strict mode support. 282 283 Changed formatting of recursive error messages to match Firefox and 284 Safari (issue http://crbug.com/70334). 285 286 Fixed incorrect rounding for float-to-integer conversions for external 287 array types, which implement the Typed Array spec 288 (issue http://crbug.com/50972). 289 290 Performance improvements on the IA32 platform. 291 292 293 2011-01-19: Version 3.0.9 294 295 Added basic GDB JIT Interface integration. 296 297 Make invalid break/continue statements a syntax error instead of a 298 runtime error. 299 300 301 2011-01-17: Version 3.0.8 302 303 Exposed heap size limit to the heap statistics gathered by 304 the GetHeapStatistics API. 305 306 Wrapped external pointers more carefully (issue 1037). 307 308 Hardened the implementation of error objects to avoid setters 309 intercepting the properties set then throwing an error. 310 311 Avoided trashing the FPSCR when calculating Math.floor on ARM. 312 313 Performance improvements on the IA32 platform. 314 315 316 2011-01-10: Version 3.0.7 317 318 Stopped calling inherited setters when creating object literals 319 (issue 1015). 320 321 Changed interpretation of malformed \c? escapes in RegExp to match 322 JSC. 323 324 Enhanced the command-line debugger interface and fixed some minor 325 bugs in the debugger. 326 327 Performance improvements on the IA32 platform. 328 329 330 2011-01-05: Version 3.0.6 331 332 Allowed getters and setters on JSArray elements (issue 900). 333 334 Stopped JSON objects from hitting inherited setters (part of 335 issue 1015). 336 337 Allowed numbers and strings as names of getters/setters in object 338 initializer (issue 820). 339 340 Added use_system_v8 option to gyp (off by default), to make it easier 341 for Linux distributions to ship with system-provided V8 library. 342 343 Exported external array data accessors (issue 1016). 344 345 Added labelled thread names to help with debugging (on Linux). 346 347 348 2011-01-03: Version 3.0.5 349 350 Fixed a couple of cast errors for gcc-3.4.3. 351 352 Performance improvements in GC and IA32 code generator. 353 354 355 2010-12-21: Version 3.0.4 356 357 Added Date::ResetCache() to the API so that the cached values in the 358 Date object can be reset to allow live DST / timezone changes. 359 360 Extended existing support for printing (while debugging) the contents 361 of objects. Added support for printing objects from release builds. 362 363 Fixed V8 issues 989, 1006, and 1007. 364 365 366 2010-12-17: Version 3.0.3 367 368 Reapplied all changes for version 3.0.1. 369 370 Improved debugger protocol for remote debugging. 371 372 Added experimental support for using gyp to generate build files 373 for V8. 374 375 Fixed implementation of String::Write in the API (issue 975). 376 377 378 2010-12-15: Version 3.0.2 379 380 Revert version 3.0.1 and patch 3.0.1.1. 381 382 383 2010-12-13: Version 3.0.1 384 385 Added support for an experimental internationalization API as an 386 extension. This extension is disabled by default but can be enabled 387 when building V8. The ECMAScript internationalization strawman is 388 at http://wiki.ecmascript.org/doku.php?id=strawman:i18n_api. 389 390 Made RegExp character class parsing stricter. This mirrors a change 391 to RegExp parsing in WebKit. 392 393 Fixed a bug in Object.defineProperty when used to change attributes 394 of an existing property. It incorrectly set the property value to 395 undefined (issue 965). 396 397 Fixed several different compilation failures on various platforms 398 caused by the 3.0.0 release. 399 400 Optimized Math.pow so it can work on unboxed doubles. 401 402 Sped up quoting of JSON strings by removing one traversal of the 403 string. 404 405 406 2010-12-07: Version 3.0.0 407 408 Improved performance by (partially) addressing issue 957 on 409 IA-32. Still needs more work for the other architectures. 410 411 412 2010-11-29: Version 2.5.9 413 414 Fixed crashes during GC caused by partially initialize heap 415 objects. 416 417 Fixed bug in process sample that caused memory leaks. 418 419 Improved performance on ARM by implementing missing stubs and 420 inlining. 421 422 Improved heap profiler support. 423 424 Added separate seeding on Windows of the random number generator 425 used internally by the compiler (issue 936). 426 427 Exposed API for getting the name of the function used to construct 428 an object. 429 430 Fixed date parser to handle one and two digit millisecond 431 values (issue 944). 432 433 Fixed number parsing to disallow space between sign and 434 digits (issue 946). 435 436 437 2010-11-23: Version 2.5.8 438 439 Removed dependency on Gay's dtoa. 440 441 Improved heap profiler precision and speed. 442 443 Reduced overhead of callback invocations on ARM. 444 445 446 2010-11-18: Version 2.5.7 447 448 Fixed obscure evaluation order bug (issue 931). 449 450 Split the random number state between JavaScript and the private API. 451 452 Fixed performance bug causing GCs when generating stack traces on 453 code from very large scripts. 454 455 Fixed bug in parser that allowed (foo):42 as a labelled statement 456 (issue 918). 457 458 Provide more accurate results about used heap size via 459 GetHeapStatistics. 460 461 Allow build-time customization of the max semispace size. 462 463 Made String.prototype.split honor limit when separator is empty 464 (issue 929). 465 466 Added missing failure check after expecting an identifier in 467 preparser (Chromium issue 62639). 468 469 470 2010-11-10: Version 2.5.6 471 472 Added support for VFP rounding modes to the ARM simulator. 473 474 Fixed multiplication overflow bug (issue 927). 475 476 Added a limit for the amount of executable memory (issue 925). 477 478 479 2010-11-08: Version 2.5.5 480 481 Added more aggressive GC of external objects in near out-of-memory 482 situations. 483 484 Fixed a bug that gave the incorrect result for String.split called 485 on the empty string (issue 924). 486 487 488 2010-11-03: Version 2.5.4 489 490 Improved V8 VFPv3 runtime detection to address issue 914. 491 492 493 2010-11-01: Version 2.5.3 494 495 Fixed a bug that prevents constants from overwriting function values 496 in object literals (issue 907). 497 498 Fixed a bug with reporting of impossible nested calls of DOM functions 499 (issue http://crbug.com/60753). 500 501 502 2010-10-27: Version 2.5.2 503 504 Improved sampler resolution on Linux. 505 506 Allowed forcing the use of a simulator from the build script 507 independently of the host architecture. 508 509 Fixed FreeBSD port (issue 912). 510 511 Made windows-tick-processor respect D8_PATH. 512 513 Implemented --noinline-new flag fully on IA32, X64 and ARM platforms. 514 515 516 2010-10-20: Version 2.5.1 517 518 Fixed bug causing spurious out of memory exceptions 519 (issue http://crbug.com/54580). 520 521 Fixed compilation error on Solaris platform (issue 901). 522 523 Fixed error in strtod (string to floating point number conversion) 524 due to glibc's use of 80-bit floats in the FPU on 32-bit linux. 525 526 Adjusted randomized allocations of executable memory to have 64k 527 granularity (issue http://crbug.com/56036). 528 529 Supported profiling using kernel perf_events on linux. Added ll_prof 530 script to tools and --ll-prof flag to V8. 531 532 533 2010-10-18: Version 2.5.0 534 535 Fixed bug in cache handling of lastIndex on global regexps 536 (issue http://crbug.com/58740). 537 538 Added USE_SIMULATOR macro that explicitly indicates that we wish to use 539 the simulator as the execution engine (by Mark Lam <mark.lam (a] palm.com> 540 from Hewlett-Packard Development Company, LP). 541 542 Fixed compilation error on ARM with gcc 4.4 (issue 894). 543 544 545 2010-10-13: Version 2.4.9 546 547 Fixed a bug in the handling of conditional expressions in test 548 contexts in compiler for top-level code. 549 550 Added "//@ sourceURL" information to the StackTrace API. 551 552 Exposed RegExp construction through the API. 553 554 555 2010-10-04: Version 2.4.8 556 557 Fixed a bug in ResumeProfilerEx causing it to not always write out the 558 whole snapshot (issue 868). 559 560 Performance improvements on all platforms. 561 562 563 2010-09-30: Version 2.4.7 564 565 Changed the command-line flag --max-new-space-size to be in kB and the 566 flag --max-old-space-size to be in MB (previously they were in bytes). 567 568 Added Debug::CancelDebugBreak to the debugger API. 569 570 Fixed a bug in getters for negative numeric property names 571 (https://bugs.webkit.org/show_bug.cgi?id=46689). 572 573 Performance improvements on all platforms. 574 575 576 2010-09-27: Version 2.4.6 577 578 Fixed assertion failure related to copy-on-write arrays (issue 876). 579 580 Fixed build failure of 64-bit V8 on Windows. 581 582 Fixed a bug in RegExp (issue http://crbug.com/52801). 583 584 Improved the profiler's coverage to cover more functions (issue 858). 585 586 Fixed error in shift operators on 64-bit V8 587 (issue http://crbug.com/54521). 588 589 590 2010-09-22: Version 2.4.5 591 592 Changed the RegExp benchmark to exercise the regexp engine on different 593 inputs by scrambling the input strings. 594 595 Fixed a bug in keyed loads on strings. 596 597 Fixed a bug with loading global function prototypes. 598 599 Fixed a bug with profiling RegExp calls (issue http://crbug.com/55999). 600 601 Performance improvements on all platforms. 602 603 604 2010-09-15: Version 2.4.4 605 606 Fixed bug with hangs on very large sparse arrays. 607 608 Now tries harder to free up memory when running out of space. 609 610 Added heap snapshots to JSON format to API. 611 612 Recalibrated benchmarks. 613 614 615 2010-09-13: Version 2.4.3 616 617 Made Date.parse properly handle TZ offsets (issue 857). 618 619 Performance improvements on all platforms. 620 621 622 2010-09-08: Version 2.4.2 623 624 Fixed GC crash bug. 625 626 Fixed stack corruption bug. 627 628 Fixed compilation for newer C++ compilers that found Operand(0) 629 ambiguous. 630 631 632 2010-09-06: Version 2.4.1 633 634 Added the ability for an embedding application to receive a callback 635 when V8 allocates (V8::AddMemoryAllocationCallback) or deallocates 636 (V8::RemoveMemoryAllocationCallback) from the OS. 637 638 Fixed several JSON bugs (including issue 855). 639 640 Fixed memory overrun crash bug triggered during V8's tick-based 641 profiling. 642 643 Performance improvements on all platforms. 644 645 646 2010-09-01: Version 2.4.0 647 648 Fixed bug in Object.freeze and Object.seal when Array.prototype or 649 Object.prototype are changed (issue 842). 650 651 Updated Array.splice to follow Safari and Firefox when called 652 with zero arguments. 653 654 Fixed a missing live register when breaking at keyed loads on ARM. 655 656 Performance improvements on all platforms. 657 658 659 2010-08-25: Version 2.3.11 660 661 Fixed bug in RegExp related to copy-on-write arrays. 662 663 Refactored tools/test.py script, including the introduction of 664 VARIANT_FLAGS that allows specification of sets of flags with which 665 all tests should be run. 666 667 Fixed a bug in the handling of debug breaks in CallIC. 668 669 Performance improvements on all platforms. 670 671 672 2010-08-23: Version 2.3.10 673 674 Fixed bug in bitops on ARM. 675 676 Build fixes for unusual compilers. 677 678 Track high water mark for RWX memory. 679 680 Performance improvements on all platforms. 681 682 683 2010-08-18: Version 2.3.9 684 685 Fixed compilation for ARMv4 on OpenBSD/FreeBSD. 686 687 Removed specialized handling of GCC 4.4 (issue 830). 688 689 Fixed DST cache to take into account the suspension of DST in 690 Egypt during the 2010 Ramadan (issue http://crbug.com/51855). 691 692 Performance improvements on all platforms. 693 694 695 2010-08-16: Version 2.3.8 696 697 Fixed build with strict aliasing on GCC 4.4 (issue 463). 698 699 Fixed issue with incorrect handling of custom valueOf methods on 700 string wrappers (issue 760). 701 702 Fixed compilation for ARMv4 (issue 590). 703 704 Improved performance. 705 706 707 2010-08-11: Version 2.3.7 708 709 Reduced size of heap snapshots produced by heap profiler (issue 783). 710 711 Introduced v8::Value::IsRegExp method. 712 713 Fixed CPU profiler crash in start / stop sequence when non-existent 714 name is passed (issue http://crbug.com/51594). 715 716 Introduced new indexed property query callbacks API (issue 816). This 717 API is guarded by USE_NEW_QUERY_CALLBACK define and is disabled 718 by default. 719 720 Removed support for object literal get/set with number/string 721 property name. 722 723 Fixed handling of JSObject::elements in CalculateNetworkSize 724 (issue 822). 725 726 Allowed compiling with strict aliasing enabled on GCC 4.4 (issue 463). 727 728 729 2010-08-09: Version 2.3.6 730 731 RegExp literals create a new object every time they are evaluated 732 (issue 704). 733 734 Object.seal and Object.freeze return the modified object (issue 809). 735 736 Fixed building using GCC 4.4.4. 737 738 739 2010-08-04: Version 2.3.5 740 741 Added support for ES5 property names. Object initialisers and 742 dot-notation property access now allows keywords. Also allowed 743 non-identifiers after "get" or "set" in an object initialiser. 744 745 Randomized the addresses of allocated executable memory on Windows. 746 747 748 2010-08-02: Version 2.3.4 749 750 Fixed problems in implementation of ES5 function.prototype.bind. 751 752 Fixed error when using apply with arguments object on ARM (issue 784). 753 754 Added setting of global flags to debugger protocol. 755 756 Fixed an error affecting cached results of sin and cos (issue 792). 757 758 Removed memory leak from a boundary case where V8 is not initialized. 759 760 Fixed issue where debugger could set breakpoints outside the body 761 of a function. 762 763 Fixed issue in debugger when using both live edit and step in features. 764 765 Added Number-letter (Nl) category to Unicode tables. These characters 766 can now be used in identifiers. 767 768 Fixed an assert failure on X64 (issue 806). 769 770 Performance improvements on all platforms. 771 772 773 2010-07-26: Version 2.3.3 774 775 Fixed error when building the d8 shell in a fresh checkout. 776 777 Implemented Function.prototype.bind (ES5 15.3.4.5). 778 779 Fixed an error in inlined stores on ia32. 780 781 Fixed an error when setting a breakpoint at the end of a function 782 that does not end with a newline character. 783 784 Performance improvements on all platforms. 785 786 787 2010-07-21: Version 2.3.2 788 789 Fixed compiler warnings when building with LLVM. 790 791 Fixed a bug with for-in applied to strings (issue 785). 792 793 Performance improvements on all platforms. 794 795 796 2010-07-19: Version 2.3.1 797 798 Fixed compilation and linking with V8_INTERPRETED_REGEXP flag. 799 800 Fixed bug related to code flushing while compiling a lazy 801 compilable function (issue http://crbug.com/49099). 802 803 Performance improvements on all platforms. 804 805 806 2010-07-15: Version 2.3.0 807 808 Added ES5 Object.seal and Object.isSealed. 809 810 Added debugger API for scheduling debugger commands from a 811 separate thread. 812 813 814 2010-07-14: Version 2.2.24 815 816 Added API for capturing stack traces for uncaught exceptions. 817 818 Fixed crash bug when preparsing from a non-external V8 string 819 (issue 775). 820 821 Fixed JSON.parse bug causing input not to be converted to string 822 (issue 764). 823 824 Added ES5 Object.freeze and Object.isFrozen. 825 826 Performance improvements on all platforms. 827 828 829 2010-07-07: Version 2.2.23 830 831 API change: Convert Unicode code points outside the basic multilingual 832 plane to the replacement character. Previous behavior was to silently 833 truncate the value to 16 bits. 834 835 Fixed crash: handle all flat string types in regexp replace. 836 837 Prevent invalid pre-parsing data passed in through the API from 838 crashing V8. 839 840 Performance improvements on all platforms. 841 842 843 2010-07-05: Version 2.2.22 844 845 Added ES5 Object.isExtensible and Object.preventExtensions. 846 847 Enabled building V8 as a DLL. 848 849 Fixed a bug in date code where -0 was not interpreted as 0 850 (issue 736). 851 852 Performance improvements on all platforms. 853 854 855 2010-06-30: Version 2.2.21 856 857 Fixed bug in externalizing some ASCII strings (Chromium issue 47824). 858 859 Updated JSON.stringify to floor the space parameter (issue 753). 860 861 Updated the Mozilla test expectations to the newest version. 862 863 Updated the ES5 Conformance Test expectations to the latest version. 864 865 Updated the V8 benchmark suite. 866 867 Provide actual breakpoints locations in response to setBreakpoint 868 and listBreakpoints requests. 869 870 871 2010-06-28: Version 2.2.20 872 873 Fixed bug with for-in on x64 platform (issue 748). 874 875 Fixed crash bug on x64 platform (issue 756). 876 877 Fixed bug in Object.getOwnPropertyNames. (chromium issue 41243). 878 879 Fixed a bug on ARM that caused the result of 1 << x to be 880 miscalculated for some inputs. 881 882 Performance improvements on all platforms. 883 884 885 2010-06-23: Version 2.2.19 886 887 Fixed bug that causes the build to break when profillingsupport=off 888 (issue 738). 889 890 Added expose-externalize-string flag for testing extensions. 891 892 Resolve linker issues with using V8 as a DLL causing a number of 893 problems with unresolved symbols. 894 895 Fixed build failure for cctests when ENABLE_DEBUGGER_SUPPORT is not 896 defined. 897 898 Performance improvements on all platforms. 899 900 901 2010-06-16: Version 2.2.18 902 903 Added API functions to retrieve information on indexed properties 904 managed by the embedding layer. Fixes bug 737. 905 906 Made ES5 Object.defineProperty support array elements. Fixes bug 619. 907 908 Added heap profiling to the API. 909 910 Removed old named property query from the API. 911 912 Incremental performance improvements. 913 914 915 2010-06-14: Version 2.2.17 916 917 Improved debugger support for stepping out of functions. 918 919 Incremental performance improvements. 920 921 922 2010-06-09: Version 2.2.16 923 924 Removed the SetExternalStringDiposeCallback API. Changed the 925 disposal of external string resources to call a virtual Dispose 926 method on the resource. 927 928 Added support for more precise break points when debugging and 929 stepping. 930 931 Memory usage improvements on all platforms. 932 933 934 2010-06-07: Version 2.2.15 935 936 Added an API to control the disposal of external string resources. 937 938 Added missing initialization of a couple of variables which makes 939 some compilers complaint when compiling with -Werror. 940 941 Improved performance on all platforms. 942 943 944 2010-06-02: Version 2.2.14 945 946 Fixed a crash in code generated for String.charCodeAt. 947 948 Fixed a compilation issue with some GCC versions (issue 727). 949 950 Performance optimizations on x64 and ARM platforms. 951 952 953 2010-05-31: Version 2.2.13 954 955 Implemented Object.getOwnPropertyDescriptor for element indices and 956 strings (issue 599). 957 958 Fixed bug for windows 64 bit C calls from generated code. 959 960 Added new scons flag unalignedaccesses for arm builds. 961 962 Performance improvements on all platforms. 963 964 965 2010-05-26: Version 2.2.12 966 967 Allowed accessors to be defined on objects rather than just object 968 templates. 969 970 Changed the ScriptData API. 971 972 973 2010-05-21: Version 2.2.11 974 975 Fixed crash bug in liveedit on 64 bit. 976 977 Use 'full compiler' when debugging is active. This should increase 978 the density of possible break points, making single step more fine 979 grained. This will only take effect for functions compiled after 980 debugging has been started, so recompilation of all functions is 981 required to get the full effect. IA32 and x64 only for now. 982 983 Misc. fixes to the Solaris build. 984 985 Added new flags --print-cumulative-gc-stat and --trace-gc-nvp. 986 987 Added filtering of CPU profiles by security context. 988 989 Fixed crash bug on ARM when running without VFP2 or VFP3. 990 991 Incremental performance improvements in all backends. 992 993 994 2010-05-17: Version 2.2.10 995 996 Performance improvements in the x64 and ARM backends. 997 998 999 2010-05-10: Version 2.2.9 1000 1001 Allowed Object.create to be called with a function (issue 697). 1002 1003 Fixed bug with Date.parse returning a non-NaN value when called on a 1004 non date string (issue 696). 1005 1006 Allowed unaligned memory accesses on ARM targets that support it (by 1007 Subrato K De of CodeAurora <subratokde (a] codeaurora.org>). 1008 1009 C++ API for retrieving JavaScript stack trace information. 1010 1011 1012 2010-05-05: Version 2.2.8 1013 1014 Performance improvements in the x64 and ARM backends. 1015 1016 1017 2010-05-03: Version 2.2.7 1018 1019 Added support for ES5 date time string format to Date.parse. 1020 1021 Performance improvements in the x64 backend. 1022 1023 1024 2010-04-28: Version 2.2.6 1025 1026 Added "amd64" as recognized architecture in scons build script 1027 (by Ryan Dahl <coldredlemur (a] gmail.com>). 1028 1029 Fixed bug in String search and replace with very simple RegExps. 1030 1031 Fixed bug in RegExp containing "\b^". 1032 1033 Performance improvements on all platforms. 1034 1035 1036 2010-04-26: Version 2.2.5 1037 1038 Various performance improvements (especially for ARM and x64) 1039 1040 Fixed bug in CPU profiling (http://crbug.com/42137) 1041 1042 Fixed a bug with the natives cache. 1043 1044 Fixed two bugs in the ARM code generator that can cause 1045 wrong calculations. 1046 1047 Fixed a bug that may cause a wrong result for shift operations. 1048 1049 1050 2010-04-21: Version 2.2.4 1051 1052 Fixed warnings on arm on newer GCC versions. 1053 1054 Fixed a number of minor bugs. 1055 1056 Performance improvements on all platforms. 1057 1058 1059 2010-04-14: Version 2.2.3 1060 1061 Added stack command and mem command to ARM simulator debugger. 1062 1063 Fixed scons snapshot and ARM build, and Windows X64 build issues. 1064 1065 Performance improvements on all platforms. 1066 1067 1068 2010-04-12: Version 2.2.2 1069 1070 Introduced new profiler API. 1071 1072 Fixed random number generator to produce full 32 random bits. 1073 1074 1075 2010-04-06: Version 2.2.1 1076 1077 Debugger improvements. 1078 1079 Fixed minor bugs. 1080 1081 1082 2010-03-29: Version 2.2.0 1083 1084 Fixed a few minor bugs. 1085 1086 Performance improvements for string operations. 1087 1088 1089 2010-03-26: Version 2.1.10 1090 1091 Fixed scons build issues. 1092 1093 Fixed a couple of minor bugs. 1094 1095 1096 2010-03-25: Version 2.1.9 1097 1098 Added API support for reattaching a global object to a context. 1099 1100 Extended debugger API with access to the internal debugger context. 1101 1102 Fixed Chromium crashes (issues http://crbug.com/39128 and 1103 http://crbug.com/39160) 1104 1105 1106 2010-03-24: Version 2.1.8 1107 1108 Added fine-grained garbage collection callbacks to the API. 1109 1110 Performance improvements on all platforms. 1111 1112 1113 2010-03-22: Version 2.1.7 1114 1115 Fixed issue 650. 1116 1117 Fixed a bug where __proto__ was sometimes enumerated (issue 646). 1118 1119 Performance improvements for arithmetic operations. 1120 1121 Performance improvements for string operations. 1122 1123 Print script name and line number information in stack trace. 1124 1125 1126 2010-03-17: Version 2.1.6 1127 1128 Performance improvements for arithmetic operations. 1129 1130 Performance improvements for string operations. 1131 1132 1133 2010-03-10: Version 2.1.4 1134 1135 Fixed code cache lookup for keyed IC's (issue http://crbug.com/37853). 1136 1137 Performance improvements on all platforms. 1138 1139 1140 2010-03-10: Version 2.1.3 1141 1142 Added API method for context-disposal notifications. 1143 1144 Added API method for accessing elements by integer index. 1145 1146 Added missing implementation of Uint32::Value and Value::IsUint32 1147 API methods. 1148 1149 Added IsExecutionTerminating API method. 1150 1151 Disabled strict aliasing for GCC 4.4. 1152 1153 Fixed string-concatenation bug (issue 636). 1154 1155 Performance improvements on all platforms. 1156 1157 1158 2010-02-23: Version 2.1.2 1159 1160 Fixed a crash bug caused by wrong assert. 1161 1162 Fixed a bug with register names on 64-bit V8 (issue 615). 1163 1164 Performance improvements on all platforms. 1165 1166 1167 2010-02-19: Version 2.1.1 1168 1169 [ES5] Implemented Object.defineProperty. 1170 1171 Improved profiler support. 1172 1173 Added SetPrototype method in the public V8 API. 1174 1175 Added GetScriptOrigin and GetScriptLineNumber methods to Function 1176 objects in the API. 1177 1178 Performance improvements on all platforms. 1179 1180 1181 2010-02-03: Version 2.1.0 1182 1183 Values are now always wrapped in objects when used as a receiver. 1184 (issue 223). 1185 1186 [ES5] Implemented Object.getOwnPropertyNames. 1187 1188 [ES5] Restrict JSON.parse to only accept strings that conforms to the 1189 JSON grammar. 1190 1191 Improvement of debugger agent (issue 549 and 554). 1192 1193 Fixed problem with skipped stack frame in profiles (issue 553). 1194 1195 Solaris support by Erich Ocean <erich.ocean (a] me.com> and Ryan Dahl 1196 <ry (a] tinyclouds.org>. 1197 1198 Fixed a bug that Math.round() returns incorrect results for huge 1199 integers. 1200 1201 Fixed enumeration order for objects created from some constructor 1202 functions (isue http://crbug.com/3867). 1203 1204 Fixed arithmetic on some integer constants (issue 580). 1205 1206 Numerous performance improvements including porting of previous IA-32 1207 optimizations to x64 and ARM architectures. 1208 1209 1210 2010-01-14: Version 2.0.6 1211 1212 Added ES5 Object.getPrototypeOf, GetOwnPropertyDescriptor, 1213 GetOwnProperty, FromPropertyDescriptor. 1214 1215 Fixed Mac x64 build errors. 1216 1217 Improved performance of some math and string operations. 1218 1219 Improved performance of some regexp operations. 1220 1221 Improved performance of context creation. 1222 1223 Improved performance of hash tables. 1224 1225 1226 2009-12-18: Version 2.0.5 1227 1228 Extended to upper limit of map space to allow for 7 times as many map 1229 to be allocated (issue 524). 1230 1231 Improved performance of code using closures. 1232 1233 Improved performance of some binary operations involving doubles. 1234 1235 1236 2009-12-16: Version 2.0.4 1237 1238 Added ECMAScript 5 Object.create. 1239 1240 Improved performance of Math.max and Math.min. 1241 1242 Optimized adding of strings on 64-bit platforms. 1243 1244 Improved handling of external strings by using a separate table 1245 instead of weak handles. This improves garbage collection 1246 performance and uses less memory. 1247 1248 Changed code generation for object and array literals in toplevel 1249 code to be more compact by doing more work in the runtime. 1250 1251 Fixed a crash bug triggered when garbage collection happened during 1252 generation of a callback load inline cache stub. 1253 1254 Fixed crash bug sometimes triggered when local variables shadowed 1255 parameters in functions that used the arguments object. 1256 1257 1258 2009-12-03: Version 2.0.3 1259 1260 Optimized handling and adding of strings, for-in and Array.join. 1261 1262 Heap serialization is now non-destructive. 1263 1264 Improved profiler support with information on time spend in C++ 1265 callbacks registered through the API. 1266 1267 Added commands to the debugger protocol for starting/stopping 1268 profiling. 1269 1270 Enabled the non-optimizing compiler for top-level code. 1271 1272 Changed the API to only allow strings to be set as data objects on 1273 Contexts and scripts to avoid potentially keeping global objects 1274 around for too long (issue 528). 1275 1276 OpenBSD support patch by Peter Valchev <pvalchev (a] gmail.com>. 1277 1278 Fixed bugs. 1279 1280 1281 2009-11-24: Version 2.0.2 1282 1283 Improved profiler support. 1284 1285 Fixed bug that broke compilation of d8 with readline support. 1286 1287 1288 2009-11-20: Version 2.0.1 1289 1290 Fixed crash bug in String.prototype.replace. 1291 1292 Reverted a change which caused Chromium interactive ui test 1293 failures. 1294 1295 1296 2009-11-18: Version 2.0.0 1297 1298 Added support for VFP on ARM. 1299 1300 Added TryCatch::ReThrow method to the API. 1301 1302 Reduced the size of snapshots and improved the snapshot load time. 1303 1304 Improved heap profiler support. 1305 1306 64-bit version now supported on Windows. 1307 1308 Fixed a number of debugger issues. 1309 1310 Fixed bugs. 1311 1312 1313 2009-10-29: Version 1.3.18 1314 1315 Reverted a change which caused crashes in RegExp replace. 1316 1317 Reverted a change which caused Chromium ui_tests failure. 1318 1319 1320 2009-10-28: Version 1.3.17 1321 1322 Added API method to get simple heap statistics. 1323 1324 Improved heap profiler support. 1325 1326 Fixed the implementation of the resource constraint API so it 1327 works when using snapshots. 1328 1329 Fixed a number of issues in the Windows 64-bit version. 1330 1331 Optimized calls to API getters. 1332 1333 Added valgrind notification on code modification to the 64-bit version. 1334 1335 Fixed issue where we logged shared library addresses on Windows at 1336 startup and never used them. 1337 1338 1339 2009-10-16: Version 1.3.16 1340 1341 X64: Convert smis to holding 32 bits of payload. 1342 1343 Introduced v8::Integer::NewFromUnsigned method. 1344 1345 Added missing null check in Context::GetCurrent. 1346 1347 Added trim, trimLeft and trimRight methods to String 1348 Patch by Jan de Mooij <jandemooij (a] gmail.com> 1349 1350 Implement ES5 Array.isArray 1351 Patch by Jan de Mooij <jandemooij (a] gmail.com> 1352 1353 Skip access checks for hidden properties. 1354 1355 Added String::Concat(Handle<String> left, Handle<String> right) to the 1356 V8 API. 1357 1358 Fixed GYP-based builds of V8. 1359 1360 1361 2009-10-07: Version 1.3.15 1362 1363 Expanded the maximum size of the code space to 512MB for 64-bit mode. 1364 1365 Fixed a crash bug happening when starting profiling (issue 1366 http://crbug.com/23768). 1367 1368 1369 2009-10-07: Version 1.3.14 1370 1371 Added GetRealNamedProperty to the API to lookup real properties 1372 located on the object or in the prototype chain skipping any 1373 interceptors. 1374 1375 Fixed the stack limits setting API to work correctly with threads. The 1376 stack limit now needs to be set to each thread thich is used with V8. 1377 1378 Removed the high-priority flag from IdleNotification() 1379 1380 Ensure V8 is initialized before locking and unlocking threads. 1381 1382 Implemented a new JavaScript minifier for compressing the source of 1383 the built-in JavaScript. This removes non-Open Source code from Douglas 1384 Crockford from the project. 1385 1386 Added a missing optimization in StringCharAt. 1387 1388 Fixed some flaky socket tests. 1389 1390 Change by Alexander Botero-Lowry to fix profiler sampling on FreeBSD 1391 in 64-bit mode. 1392 1393 Fixed memory leaks in the thread management code. 1394 1395 Fixed the result of assignment to a pixel array. The assigned value 1396 is now the result. 1397 1398 Error reporting for invalid left-hand sides in for-in statements, pre- 1399 and postfix count expressions, and assignments now matches the JSC 1400 behavior in Safari 4. 1401 1402 Follow the spec in disallowing function declarations without a name. 1403 1404 Always allocate code objects within a 2 GB range. On x64 architecture 1405 this is used to use near calls (32-bit displacement) in Code objects. 1406 1407 Optimized array construction ported to x64 and ARM architectures. 1408 1409 [ES5] Changed Object.keys to return strings for element indices. 1410 1411 1412 2009-09-23: Version 1.3.13 1413 1414 Fixed uninitialized memory problem. 1415 1416 Improved heap profiler support. 1417 1418 1419 2009-09-22: Version 1.3.12 1420 1421 Changed behavior of |function|.toString() on built-in functions to 1422 be compatible with other implementations. Patch by Jan de Mooij. 1423 1424 Added Object::IsDirty in the API. 1425 1426 Optimized array construction; it is now handled purely in native 1427 code. 1428 1429 [ES5] Made properties of the arguments array enumerable. 1430 1431 [ES5] Added test suite adapter for the es5conform test suite. 1432 1433 [ES5] Added Object.keys function. 1434 1435 1436 2009-09-15: Version 1.3.11 1437 1438 Fixed crash in error reporting during bootstrapping. 1439 1440 Optimized generated IA32 math code by using SSE2 instructions when 1441 available. 1442 1443 Implemented missing pieces of debugger infrastructure on ARM. The 1444 debugger is now fully functional on ARM. 1445 1446 Made 'hidden' the default visibility for gcc. 1447 1448 1449 2009-09-09: Version 1.3.10 1450 1451 Fixed profiler on Mac in 64-bit mode. 1452 1453 Optimized creation of objects from simple constructor functions on 1454 ARM. 1455 1456 Fixed a number of debugger issues. 1457 1458 Reduced the amount of memory consumed by V8. 1459 1460 1461 2009-09-02: Version 1.3.9 1462 1463 Optimized stack guard checks on ARM. 1464 1465 Optimized API operations by inlining more in the API. 1466 1467 Optimized creation of objects from simple constructor functions. 1468 1469 Enabled a number of missing optimizations in the 64-bit port. 1470 1471 Implemented native-code support for regular expressions on ARM. 1472 1473 Stopped using the 'sahf' instruction on 64-bit machines that do 1474 not support it. 1475 1476 Fixed a bug in the support for forceful termination of JavaScript 1477 execution. 1478 1479 1480 2009-08-26: Version 1.3.8 1481 1482 Changed the handling of idle notifications to allow idle 1483 notifications when V8 has not yet been initialized. 1484 1485 Fixed ARM simulator compilation problem on Windows. 1486 1487 1488 2009-08-25: Version 1.3.7 1489 1490 Reduced the size of generated code on ARM platforms by reducing 1491 the size of constant pools. 1492 1493 Changed build files to not include the 'ENV' user environment 1494 variable in the build environment. 1495 1496 Changed the handling of idle notifications. 1497 1498 1499 2009-08-21: Version 1.3.6 1500 1501 Added support for forceful termination of JavaScript execution. 1502 1503 Added low memory notification to the API. The embedding host can signal 1504 a low memory situation to V8. 1505 1506 Changed the handling of global handles (persistent handles in the API 1507 sense) to avoid issues regarding allocation of new global handles 1508 during weak handle callbacks. 1509 1510 Changed the growth policy of the young space. 1511 1512 Fixed a GC issue introduced in version 1.3.5. 1513 1514 1515 2009-08-19: Version 1.3.5 1516 1517 Optimized initialization of some arrays in the builtins. 1518 1519 Fixed mac-nm script to support filenames with spaces. 1520 1521 Support for using the V8 profiler when V8 is embedded in a Windows DLL. 1522 1523 Changed typeof RegExp from 'object' to 'function' for compatibility. 1524 Fixed bug where regexps were not callable across contexts. 1525 1526 Added context independent script compilation to the API. 1527 1528 Added API call to get the stack trace for an exception. 1529 1530 Added API for getting object mirrors. 1531 1532 Made sure that SSE3 instructions are used whenever possible even when 1533 running off a snapshot generated without using SSE3 instructions. 1534 1535 Tweaked the handling of the initial size and growth policy of the heap. 1536 1537 Added native code generation for RegExp to 64-bit version. 1538 1539 Added JavaScript debugger support to 64-bit version. 1540 1541 1542 2009-08-13: Version 1.3.4 1543 1544 Added a readline() command to the d8 shell. 1545 1546 Fixed bug in json parsing. 1547 1548 Added idle notification to the API and reduced memory on idle 1549 notifications. 1550 1551 1552 2009-08-12: Version 1.3.3 1553 1554 Fixed issue 417: incorrect %t placeholder expansion. 1555 1556 Added .gitignore file similar to Chromium's one. 1557 1558 Fixed SConstruct file to build with new logging code for Android. 1559 1560 API: added function to find instance of template in prototype 1561 chain. Inlined Object::IsInstanceOf. 1562 1563 Land change to notify valgrind when we modify code on x86. 1564 1565 Added api call to determine whether a string can be externalized. 1566 1567 Added a write() command to d8. 1568 1569 1570 2009-08-05: Version 1.3.2 1571 1572 Started new compiler infrastructure for two-pass compilation using a 1573 control flow graph constructed from the AST. 1574 1575 Profiler stack sampling for X64. 1576 1577 Safe handling of NaN to Posix platform-dependent time functions. 1578 1579 Added a new profiler control API to unify controlling various aspects 1580 of profiling. 1581 1582 Fixed issue 392. 1583 1584 1585 2009-07-30: Version 1.3.1 1586 1587 Speed improvements to accessors and interceptors. 1588 1589 Added support for capturing stack information on custom errors. 1590 1591 Added support for morphing an object into a pixel array where its 1592 indexed properties are stored in an external byte array. Values written 1593 are always clamped to the 0..255 interval. 1594 1595 Profiler on x64 now handles C/C++ functions from shared libraries. 1596 1597 Changed the debugger to avoid stepping into function.call/apply if the 1598 function is a built-in. 1599 1600 Initial implementation of constructor heap profile for JS objects. 1601 1602 More fine grained control of profiling aspects through the API. 1603 1604 Optimized the called as constructor check for API calls. 1605 1606 1607 2009-07-27: Version 1.3.0 1608 1609 Allowed RegExp objects to be called as functions (issue 132). 1610 1611 Fixed issue where global property cells would escape after 1612 detaching the global object; see http://crbug.com/16276. 1613 1614 Added support for stepping into setters and getters in the 1615 debugger. 1616 1617 Changed the debugger to avoid stopping in its own JavaScript code 1618 and in the code of built-in functions. 1619 1620 Fixed issue 345 by avoiding duplicate escaping labels. 1621 1622 Fixed ARM code generator crash in short-circuited boolean 1623 expressions and added regression tests. 1624 1625 Added an external allocation limit to avoid issues where small V8 1626 objects would hold on to large amounts of external memory without 1627 causing garbage collections. 1628 1629 Finished more of the inline caching stubs for x64 targets. 1630 1631 1632 2009-07-13: Version 1.2.14 1633 1634 Added separate paged heap space for global property cells and 1635 avoid updating the write barrier when storing into them. 1636 1637 Improved peep-hole optimization on ARM platforms by not emitting 1638 unnecessary debug information. 1639 1640 Re-enabled ICs for loads and calls that skip a global object 1641 during lookup through the prototype chain. 1642 1643 Allowed access through global proxies to use ICs. 1644 1645 Fixed issue 401. 1646 1647 1648 2009-07-09: Version 1.2.13 1649 1650 Fixed issue 397, issue 398, and issue 399. 1651 1652 Added support for breakpoint groups. 1653 1654 Fixed bugs introduced with the new global object representation. 1655 1656 Fixed a few bugs in the ARM code generator. 1657 1658 1659 2009-07-06: Version 1.2.12 1660 1661 Added stack traces collection to Error objects accessible through 1662 the e.stack property. 1663 1664 Changed RegExp parser to use a recursive data structure instead of 1665 stack-based recursion. 1666 1667 Optimized Date object construction and string concatenation. 1668 1669 Improved performance of div, mod, and mul on ARM platforms. 1670 1671 1672 2009-07-02: Version 1.2.11 1673 1674 Improved performance on IA-32 and ARM. 1675 1676 Fixed profiler sampler implementation on Mac OS X. 1677 1678 Changed the representation of global objects to improve 1679 performance of adding a lot of new properties. 1680 1681 1682 2009-06-29: Version 1.2.10 1683 1684 Improved debugger support. 1685 1686 Fixed bug in exception message reporting (issue 390). 1687 1688 Improved overall performance. 1689 1690 1691 2009-06-23: Version 1.2.9 1692 1693 Improved math performance on ARM. 1694 1695 Fixed profiler name-inference bug. 1696 1697 Fixed handling of shared libraries in the profiler tick processor 1698 scripts. 1699 1700 Fixed handling of tests that time out in the test scripts. 1701 1702 Fixed compilation on MacOS X version 10.4. 1703 1704 Fixed two bugs in the regular expression engine. 1705 1706 Fixed a bug in the string type inference. 1707 1708 Fixed a bug in the handling of 'constant function' properties. 1709 1710 Improved overall performance. 1711 1712 1713 2009-06-16: Version 1.2.8 1714 1715 Optimized math on ARM platforms. 1716 1717 Fixed two crash bugs in the handling of getters and setters. 1718 1719 Improved the debugger support by adding scope chain information. 1720 1721 Improved the profiler support by compressing log data transmitted 1722 to clients. 1723 1724 Improved overall performance. 1725 1726 1727 2009-06-08: Version 1.2.7 1728 1729 Improved debugger and profiler support. 1730 1731 Reduced compilation time by improving the handling of deferred 1732 code. 1733 1734 Optimized interceptor accesses where the property is on the object 1735 on which the interceptors is attached. 1736 1737 Fixed compilation problem on GCC 4.4 by changing the stack 1738 alignment to 16 bytes. 1739 1740 Fixed handle creation to follow stric aliasing rules. 1741 1742 Fixed compilation on FreeBSD. 1743 1744 Introduced API for forcing the deletion of a property ignoring 1745 interceptors and attributes. 1746 1747 1748 2009-05-29: Version 1.2.6 1749 1750 Added a histogram recording hit rates at different levels of the 1751 compilation cache. 1752 1753 Added stack overflow check for the RegExp analysis phase. Previously a 1754 very long regexp graph could overflow the stack with recursive calls. 1755 1756 Use a dynamic buffer when collecting log events in memory. 1757 1758 Added start/stop events to the profiler log. 1759 1760 Fixed infinite loop which could happen when setting a debug break while 1761 executing a RegExp compiled to native code. 1762 1763 Fixed handling of lastIndexOf called with negative index (issue 351). 1764 1765 Fixed irregular crash in profiler test (issue 358). 1766 1767 Fixed compilation issues with some versions of gcc. 1768 1769 1770 2009-05-26: Version 1.2.5 1771 1772 Fixed bug in initial boundary check for Boyer-Moore text 1773 search (issue 349). 1774 1775 Fixed compilation issues with MinGW and gcc 4.3+ and added support 1776 for armv7 and cortex-a8 architectures. Patches by Lei Zhang and 1777 Craig Schlenter. 1778 1779 Added a script cache to the debugger. 1780 1781 Optimized compilation performance by improving internal data 1782 structures and avoiding expensive property load optimizations for 1783 code that's infrequently executed. 1784 1785 Exposed the calling JavaScript context through the static API 1786 function Context::GetCalling(). 1787 1788 1789 2009-05-18: Version 1.2.4 1790 1791 Improved performance of floating point number allocation for ARM 1792 platforms. 1793 1794 Fixed crash when using the instanceof operator on functions with 1795 number values in their prototype chain (issue 341). 1796 1797 Optimized virtual frame operations in the code generator to speed 1798 up compilation time and allocated the frames in the zone. 1799 1800 Made the representation of virtual frames and jump targets in the 1801 code generator much more compact. 1802 1803 Avoided linear search for non-locals in scope code when resolving 1804 variables inside with and eval scopes. 1805 1806 Optimized lexical scanner by dealing with whitespace as part of 1807 the token scanning instead of as a separate step before it. 1808 1809 Changed the scavenging collector so that promoted objects do not 1810 reside in the old generation while their remembered set is being 1811 swept for pointers into the young generation. 1812 1813 Fixed numeric overflow handling when compiling count operations. 1814 1815 1816 2009-05-11: Version 1.2.3 1817 1818 Fixed bug in reporting of out-of-memory situations. 1819 1820 Introduced hidden prototypes on certain builtin prototype objects 1821 such as String.prototype to emulate JSC's behavior of restoring 1822 the original function when deleting functions from those prototype 1823 objects. 1824 1825 Fixed crash bug in the register allocator. 1826 1827 1828 2009-05-04: Version 1.2.2 1829 1830 Fixed bug in array sorting for sparse arrays (issue 326). 1831 1832 Added support for adding a soname when building a shared library 1833 on Linux (issue 151). 1834 1835 Fixed bug caused by morphing internal ASCII strings to external 1836 two-byte strings. Slices over ASCII strings have to forward ASCII 1837 checks to the underlying buffer string. 1838 1839 Allowed API call-as-function handlers to be called as 1840 constructors. 1841 1842 Fixed a crash bug where an external string was disposed but a 1843 slice of the external string survived as a symbol. 1844 1845 1846 2009-04-27: Version 1.2.1 1847 1848 Added EcmaScript 5 JSON object. 1849 1850 Fixed bug in preemption support on ARM. 1851 1852 1853 2009-04-23: Version 1.2.0 1854 1855 Optimized floating-point operations on ARM. 1856 1857 Added a number of extensions to the debugger API. 1858 1859 Changed the enumeration order for unsigned integer keys to always 1860 be numerical order. 1861 1862 Added a "read" extension to the shell sample. 1863 1864 Added support for Array.prototype.reduce and 1865 Array.prototype.reduceRight. 1866 1867 Added an option to the SCons build to control Microsoft Visual C++ 1868 link-time code generation. 1869 1870 Fixed a number of bugs (in particular issue 315, issue 316, 1871 issue 317 and issue 318). 1872 1873 1874 2009-04-15: Version 1.1.10 1875 1876 Fixed crash bug that occurred when loading a const variable in the 1877 presence of eval. 1878 1879 Allowed using with and eval in registered extensions in debug mode 1880 by fixing bogus assert. 1881 1882 Fixed the source position for function returns to enable the 1883 debugger to break there. 1884 1885 1886 2009-04-14: Version 1.1.9 1887 1888 Made the stack traversal code in the profiler robust by avoiding 1889 to look into the heap. 1890 1891 Added name inferencing for anonymous functions to facilitate 1892 debugging and profiling. 1893 1894 Re-enabled stats timers in the developer shell (d8). 1895 1896 Fixed issue 303 by avoiding to shortcut cons-symbols. 1897 1898 1899 2009-04-11: Version 1.1.8 1900 1901 Changed test-debug/ThreadedDebugging to be non-flaky (issue 96). 1902 1903 Fixed step-in handling for Function.prototype.apply and call in 1904 the debugger (issue 269). 1905 1906 Fixed v8::Object::DeleteHiddenValue to not bail out when there 1907 are no hidden properties. 1908 1909 Added workaround for crash bug, where external symbol table 1910 entries with deleted resources would lead to NPEs when looking 1911 up in the symbol table. 1912 1913 1914 2009-04-07: Version 1.1.7 1915 1916 Added support for easily importing additional environment 1917 variables into the SCons build. 1918 1919 Optimized strict equality checks. 1920 1921 Fixed crash in indexed setters on objects without a corresponding 1922 getter (issue 298). 1923 1924 Re-enabled script compilation cache. 1925 1926 1927 2009-04-01: Version 1.1.6 1928 1929 Reverted an unsafe code generator change. 1930 1931 1932 2009-04-01: Version 1.1.5 1933 1934 Fixed bug that caused function literals to not be optimized as 1935 much as other functions. 1936 1937 Improved profiler support. 1938 1939 Fixed a crash bug in connection with debugger unloading. 1940 1941 Fixed a crash bug in the code generator caused by losing the 1942 information that a frame element was copied. 1943 1944 Fixed an exception propagation bug that could cause non-null 1945 return values when exceptions were thrown. 1946 1947 1948 2009-03-30: Version 1.1.4 1949 1950 Optimized String.prototype.match. 1951 1952 Improved the stack information in profiles. 1953 1954 Fixed bug in ARM port making it possible to compile the runtime 1955 system for thumb mode again. 1956 1957 Implemented a number of optimizations in the code generator. 1958 1959 Fixed a number of memory leaks in tests. 1960 1961 Fixed crash bug in connection with script source code and external 1962 strings. 1963 1964 1965 2009-03-24: Version 1.1.3 1966 1967 Fixed assertion failures in compilation of loop conditions. 1968 1969 Removed STL dependency from developer shell (d8). 1970 1971 Added infrastructure for protecting the V8 heap from corruption 1972 caused by memory modifications from the outside. 1973 1974 1975 2009-03-24: Version 1.1.2 1976 1977 Improved frame merge code generated by the code generator. 1978 1979 Optimized String.prototype.replace. 1980 1981 Implemented __defineGetter__ and __defineSetter__ for properties 1982 with integer keys on non-array objects. 1983 1984 Improved debugger and profiler support. 1985 1986 Fixed a number of portability issues to allow compilation for 1987 smaller ARM devices. 1988 1989 Exposed object cloning through the API. 1990 1991 Implemented hidden properties. This is used to expose an identity 1992 hash for objects through the API. 1993 1994 Implemented restarting of regular expressions if their input 1995 string changes representation during preemption. 1996 1997 Fixed a code generator bug that could cause assignments in loops 1998 to be ignored if using continue to break out of the loop (issue 1999 284). 2000 2001 2002 2009-03-12: Version 1.1.1 2003 2004 Fixed an assertion in the new compiler to take stack overflow 2005 exceptions into account. 2006 2007 Removed exception propagation code that could cause crashes. 2008 2009 Fixed minor bug in debugger line number computations. 2010 2011 8-byte align the C stack on Linux and Windows to speed up floating 2012 point computations. 2013 2014 2015 2009-03-12: Version 1.1.0 2016 2017 Improved code generation infrastructure by doing simple register 2018 allocation and constant folding and propagation. 2019 2020 Optimized regular expression matching by avoiding to create 2021 intermediate string arrays and by flattening nested array 2022 representations of RegExp data. 2023 2024 Traverse a few stack frames when recording profiler samples to 2025 include partial call graphs in the profiling output. 2026 2027 Added support for using OProfile to profile generated code. 2028 2029 Added remote debugging support to the D8 developer shell. 2030 2031 Optimized creation of nested literals like JSON objects. 2032 2033 Fixed a bug in garbage collecting unused maps and turned it on by 2034 default (--collect-maps). 2035 2036 Added support for running tests under Valgrind. 2037 2038 2039 2009-02-27: Version 1.0.3 2040 2041 Optimized double-to-integer conversions in bit operations by using 2042 SSE3 instructions if available. 2043 2044 Optimized initialization sequences that store to multiple 2045 properties of the same object. 2046 2047 Changed the D8 debugger frontend to use JSON messages. 2048 2049 Force garbage collections when disposing contexts. 2050 2051 Align code objects at 32-byte boundaries. 2052 2053 2054 2009-02-25: Version 1.0.2 2055 2056 Improved profiling support by performing simple call stack 2057 sampling for ticks and by fixing a bug in the logging of code 2058 addresses. 2059 2060 Fixed a number of debugger issues. 2061 2062 Optimized code that uses eval. 2063 2064 Fixed a couple of bugs in the regular expression engine. 2065 2066 Reduced the size of generated code for certain regular expressions. 2067 2068 Removed JSCRE completely. 2069 2070 Fixed issue where test could not be run if there was a dot in the 2071 checkout path. 2072 2073 2074 2009-02-13: Version 1.0.1 2075 2076 Fixed two crash-bugs in irregexp (issue 231 and 233). 2077 2078 Fixed a number of minor bugs (issue 87, 227 and 228). 2079 2080 Added support for morphing strings to external strings on demand 2081 to avoid having to create copies in the embedding code. 2082 2083 Removed experimental support for external symbol callbacks. 2084 2085 2086 2009-02-09: Version 1.0.0 2087 2088 Fixed crash-bug in the code generation for case independent 16 bit 2089 backreferences. 2090 2091 Made shells more robust in the presence of string conversion 2092 failures (issue 224). 2093 2094 Fixed a potential infinite loop when attempting to resolve 2095 eval (issue 221). 2096 2097 Miscellaneous fixes to the new regular expression engine. 2098 2099 Reduced binary by stripping unneeded text from JavaScript library and 2100 minifying some JavaScript files. 2101 2102 2103 2009-01-27: Version 0.4.9 2104 2105 Enabled new regular expression engine. 2106 2107 Made a number of changes to the debugger protocol. 2108 2109 Fixed a number of bugs in the preemption support. 2110 2111 Added -p option to the developer shell to run files in parallel 2112 using preemption. 2113 2114 Fixed a number of minor bugs (including issues 176, 187, 189, 192, 2115 193, 198 and 201). 2116 2117 Fixed a number of bugs in the serialization/deserialization 2118 support for the ARM platform. 2119 2120 2121 2009-01-19: Version 0.4.8.1 2122 2123 Minor patch to debugger support. 2124 2125 2126 2009-01-16: Version 0.4.8 2127 2128 Fixed string length bug on ARM (issue 171). 2129 2130 Made most methods in the API const. 2131 2132 Optimized object literals by improving data locality. 2133 2134 Fixed bug that caused incomplete functions to be cached in case of 2135 stack overflow exceptions. 2136 2137 Fixed bugs that caused catch variables and variables introduced by 2138 eval to behave incorrectly when using accessors (issues 186, 190 2139 and 191). 2140 2141 2142 2009-01-06: Version 0.4.7 2143 2144 Minor bugfixes and optimizations. 2145 2146 Added command line debugger to D8 shell. 2147 2148 Fixed subtle bug that caused the wrong 'this' to be used when 2149 calling a caught function in a catch clause. 2150 2151 Inline array loads within loops directly in the code instead of 2152 always calling a stub. 2153 2154 2155 2008-12-11: Version 0.4.6 2156 2157 Fixed exception reporting bug where certain exceptions were 2158 incorrectly reported as uncaught. 2159 2160 Improved the memory allocation strategy used during compilation to 2161 make running out of memory when compiling huge scripts less 2162 likely. 2163 2164 Optimized String.replace by avoiding the construction of certain 2165 sub strings. 2166 2167 Fixed bug in code generation for large switch statements on ARM. 2168 2169 Fixed bug that caused V8 to change the global object template 2170 passed in by the user. 2171 2172 Changed the API for creating object groups used during garbage 2173 collection. Entire object groups are now passed to V8 instead of 2174 individual members of the groups. 2175 2176 2177 2008-12-03: Version 0.4.5 2178 2179 Added experimental API support for allocating V8 symbols as 2180 external strings. 2181 2182 Fixed bugs in debugging support on ARM. 2183 2184 Changed eval implementation to correctly detect whether or not a 2185 call to eval is aliased. 2186 2187 Fixed bug caused by a combination of the compilation cache and 2188 dictionary probing in native code. The bug caused us to sometimes 2189 call functions that had not yet been compiled. 2190 2191 Added platform support for FreeBSD. 2192 2193 Added support for building V8 on Windows with either the shared or 2194 static version of MSVCRT 2195 2196 Added the v8::jscre namespace around the jscre functions to avoid 2197 link errors (duplicate symbols) when building Google Chrome. 2198 2199 Added support for calling a JavaScript function with the current 2200 debugger execution context as its argument to the debugger 2201 interface. 2202 2203 Changed the type of names of counters from wchar_t to char. 2204 2205 Changed the Windows system call used to compute daylight savings 2206 time. The system call that we used to use became four times 2207 slower on WinXP SP3. 2208 2209 Added support in the d8 developer shell for memory-mapped counters 2210 and added a stats-viewer tool. 2211 2212 Fixed bug in upper/lower case mappings (issue 149). 2213 2214 2215 2008-11-17: Version 0.4.4 2216 2217 Reduced code size by using shorter instruction encoding when 2218 possible. 2219 2220 Added a --help option to the shell sample and to the d8 shell. 2221 2222 Added visual studio project files for building the ARM simulator. 2223 2224 Fixed a number of ARM simulator issues. 2225 2226 Fixed bug in out-of-memory handling on ARM. 2227 2228 Implemented shell support for passing arguments to a script from 2229 the command line. 2230 2231 Fixed bug in date code that made certain date functions return -0 2232 instead of 0 for dates before the epoch. 2233 2234 Restricted applications of eval so it can only be used in the 2235 context of the associated global object. 2236 2237 Treat byte-order marks as whitespace characters. 2238 2239 2240 2008-11-04: Version 0.4.3 2241 2242 Added support for API accessors that prohibit overwriting by 2243 accessors defined in JavaScript code by using __defineGetter__ and 2244 __defineSetter__. 2245 2246 Improved handling of conditionals in test status files. 2247 2248 Introduced access control in propertyIsEnumerable. 2249 2250 Improved performance of some string operations by caching 2251 information about the type of the string between operations. 2252 2253 Fixed bug in fast-case code for switch statements that only have 2254 integer labels. 2255 2256 2257 2008-10-30: Version 0.4.2 2258 2259 Improved performance of Array.prototype.concat by moving the 2260 implementation to C++ (issue 123). 2261 2262 Fixed heap growth policy to avoid growing old space to its maximum 2263 capacity before doing a garbage collection and fixed issue that 2264 would lead to artificial out of memory situations (issue 129). 2265 2266 Fixed Date.prototype.toLocaleDateString to return the date in the 2267 same format as WebKit. 2268 2269 Added missing initialization checks to debugger API. 2270 2271 Added removing of unused maps during GC. 2272 2273 2274 2008-10-28: Version 0.4.1 2275 2276 Added caching of RegExp data in compilation cache. 2277 2278 Added Visual Studio project file for d8 shell. 2279 2280 Fixed function call performance regression introduced in version 2281 0.4.0 when splitting the global object in two parts (issue 120). 2282 2283 Fixed issue 131 by checking for empty handles before throwing and 2284 reporting exceptions. 2285 2286 2287 2008-10-23: Version 0.4.0 2288 2289 Split the global object into two parts: The state holding global 2290 object and the global object proxy. 2291 2292 Fixed bug that affected the value of an assignment to an element 2293 in certain cases (issue 116). 2294 2295 Added GetPropertyNames functionality (issue 33) and extra Date 2296 functions (issue 77) to the API. 2297 2298 Changed WeakReferenceCallback to take a Persistent<Value> instead 2299 of a Persistent<Object> (issue 101). 2300 2301 Fixed issues with message reporting for exceptions in try-finally 2302 blocks (issues 73 and 75). 2303 2304 Optimized flattening of strings and string equality checking. 2305 2306 Improved Boyer-Moore implementation for faster indexOf operations. 2307 2308 Added development shell (d8) which includes counters and 2309 completion support. 2310 2311 Fixed problem with the receiver passed to functions called from 2312 eval (issue 124). 2313 2314 2315 2008-10-16: Version 0.3.5 2316 2317 Improved string hash-code distribution by excluding bit-field bits 2318 from the hash-code. 2319 2320 Changed string search algorithm used in indexOf from KMP to 2321 Boyer-Moore. 2322 2323 Improved the generated code for the instanceof operator. 2324 2325 Improved performance of slow-case string equality checks by 2326 specializing the code based on the string representation. 2327 2328 Improve the handling of out-of-memory situations (issue 70). 2329 2330 Improved performance of strict equality checks. 2331 2332 Improved profiler output to make it easier to see anonymous 2333 functions. 2334 2335 Improved performance of slow-case keyed loads. 2336 2337 Improved property access performance by allocating a number of 2338 properties in the front object. 2339 2340 Changed the toString behavior on the built-in object constructors 2341 to print [native code] instead of the actual source. Some web 2342 applications do not like constructors with complex toString 2343 results. 2344 2345 2346 2008-10-06: Version 0.3.4 2347 2348 Changed Array.prototype.sort to use quick sort. 2349 2350 Fixed code generation issue where leaving a finally block with 2351 break or continue would accumulate elements on the expression 2352 stack (issue 86). 2353 2354 Made sure that the name accessor on functions returns the expected 2355 names for builtin JavaScript functions and C++ callback functions. 2356 2357 Added fast case code for extending the property storage array of 2358 JavaScript objects. 2359 2360 Ported switch statement optimizations introduced in version 0.3.3 2361 to the ARM code generator. 2362 2363 Allowed GCC to use strict-aliasing rules when compiling. 2364 2365 Improved performance of arguments object allocation by taking care 2366 of arguments adaptor frames in the generated code. 2367 2368 Updated the V8 benchmark suite to version 2. 2369 2370 2371 2008-09-25: Version 0.3.3 2372 2373 Improved handling of relocation information to enable more 2374 peep-hole optimizations. 2375 2376 Optimized switch statements where all labels are constant small 2377 integers. 2378 2379 Optimized String.prototype.indexOf for common cases. 2380 2381 Fixed more build issues (issue 80). 2382 2383 Fixed a couple of profiler issues. 2384 2385 Fixed bug where the body of a function created using the Function 2386 constructor was not allowed to end with a single-line comment 2387 (issue 85). 2388 2389 Improved handling of object literals by canonicalizing object 2390 literal maps. This will allow JSON objects with the same set of 2391 properties to share the same map making inline caching work better 2392 for JSON objects. 2393 2394 2395 2008-09-17: Version 0.3.2 2396 2397 Generalized the EvalCache into a CompilationCache and enabled it 2398 for scripts too. The current strategy is to retire all entries 2399 whenever a mark-sweep collection is started. 2400 2401 Fixed bug where switch statements containing only a default case 2402 would lead to an unbalanced stack (issue 69). 2403 2404 Fixed bug that made access to the function in a named function 2405 expression impossible in certain situations (issue 24). 2406 2407 Fixed even more build issues. 2408 2409 Optimized calling conventions on ARM. The conventions on ARM and 2410 IA-32 now match. 2411 2412 Removed static initializers for flags and counters. 2413 2414 Improved inline caching behavior for uncommon cases where lazily 2415 loading Date and RegExp code could force certain code paths go 2416 megamorphic. 2417 2418 Removed arguments adaption for builtins written in C++. This 2419 makes Array.prototype.push and Array.prototype.pop slightly 2420 faster. 2421 2422 2423 2008-09-11: Version 0.3.1 2424 2425 Fixed a number of build issues. 2426 2427 Fixed problem with missing I-cache flusing on ARM. 2428 2429 Changed space layout in memory management by splitting up 2430 code space into old data space and code space. 2431 2432 Added utf-8 conversion support to the API (issue 57). 2433 2434 Optimized repeated calls to eval with the same strings. These 2435 repeated calls are common in web applications. 2436 2437 Added Xcode project file. 2438 2439 Optimized a couple of Array operation. 2440 2441 Fixed parser bug by checking for end-of-string when parsing break 2442 and continue (issue 35). 2443 2444 Fixed problem where asian characters were not categorized as 2445 letters. 2446 2447 Fixed bug that disallowed calling functions fetched from an array 2448 using a string as an array index (issue 32). 2449 2450 Fixed bug where the internal field count on object templates were 2451 sometimes ignored (issue 54). 2452 2453 Added -f option to the shell sample for compatibility with other 2454 engines (issue 18). 2455 2456 Added source info to TryCatches in the API. 2457 2458 Fixed problem where the seed for the random number generator was 2459 clipped in a double to unsigned int conversion. 2460 2461 Fixed bug where cons string symbols were sometimes converted to 2462 non-symbol flat strings during GC. 2463 2464 Fixed bug in error reporting when attempting to convert null to an 2465 object. 2466 2467 2468 2008-09-04: Version 0.3.0 2469 2470 Added support for running tests on the ARM simulator. 2471 2472 Fixed bug in the 'in' operator where negative indices were not 2473 treated correctly. 2474 2475 Fixed build issues on gcc-4.3.1. 2476 2477 Changed Date.prototype.toLocaleTimeString to not print the 2478 timezone part of the time. 2479 2480 Renamed debug.h to v8-debug.h to reduce the risk of name conflicts 2481 with user code. 2482 2483 2484 2008-09-02: Version 0.2.5 2485 2486 Renamed the top level directory 'public' to 'include'. 2487 2488 Added 'env' option to the SCons build scripts to support 2489 overriding the ENV part of the build environment. This is mostly 2490 to support Windows builds in cases where SCons cannot find the 2491 correct paths to the Windows SDK, as these paths cannot be passed 2492 through shell environment variables. 2493 2494 Enabled "Buffer Security Check" on for the Windows SCons build and 2495 added the linker option /OPT:ICF as an optimization. 2496 2497 Added the V8 benchmark suite to the repository. 2498 2499 2500 2008-09-01: Version 0.2.4 2501 2502 Included mjsunit JavaScript test suite and C++ unit tests. 2503 2504 Changed the shell sample to not print the result of executing a 2505 script provided on the command line. 2506 2507 Fixed issue when building samples on Windows using a shared V8 2508 library. Added visibility option on Linux build which makes the 2509 generated library 18% smaller. 2510 2511 Changed build system to accept multiple build modes in one build 2512 and generate separate objects, libraries and executables for each 2513 mode. 2514 2515 Removed deferred negation optimization (a * -b => -(a * b)) since 2516 this visibly changes operand conversion order. 2517 2518 Improved parsing performance by introducing stack guard in 2519 preparsing. Without a stack guard preparsing always bails out 2520 with stack overflow. 2521 2522 Changed shell sample to take flags directly from the command-line. 2523 Added API call that implements this. 2524 2525 Added load, quit and version functions to the shell sample so it's 2526 easier to run benchmarks and tests. 2527 2528 Fixed issue with building samples and cctests on 64-bit machines. 2529 2530 Fixed bug in the runtime system where the prototype chain was not 2531 always searched for a setter when setting a property that does not 2532 exist locally. 2533 2534 2535 2008-08-14: Version 0.2.3 2536 2537 Improved performance of garbage collection by moving the 2538 function that updates pointers during compacting collection 2539 into the updating visitor. This gives the compiler a better 2540 chance to inline and avoid a function call per (potential) 2541 pointer. 2542 2543 Extended the shell sample with a --runtime-flags option. 2544 2545 Added Visual Studio project files for the shell.cc and 2546 process.cc samples. 2547 2548 2549 2008-08-13: Version 0.2.2 2550 2551 Improved performance of garbage collection by changing the way 2552 we use the marking stack in the event of stack overflow during 2553 full garbage collection and by changing the way we mark roots. 2554 2555 Cleaned up ARM version by removing top of stack caching and by 2556 introducing push/pop elimination. 2557 2558 Cleaned up the way runtime functions are called to allow 2559 runtime calls with no arguments. 2560 2561 Changed Windows build options to make sure that exceptions are 2562 disabled and that optimization flags are enabled. 2563 2564 Added first version of Visual Studio project files. 2565 2566 2567 2008-08-06: Version 0.2.1 2568 2569 Improved performance of unary addition by avoiding runtime calls. 2570 2571 Fixed the handling of '>' and '<=' to use right-to-left conversion 2572 and left-to-right evaluation as specified by ECMA-262. 2573 2574 Fixed a branch elimination bug on the ARM platform where incorrect 2575 code was generated because of overly aggressive branch 2576 elimination. 2577 2578 Improved performance of code that repeatedly assigns the same 2579 function to the same property of different objects with the same 2580 map. 2581 2582 Untangled DEBUG and ENABLE_DISASSEMBLER defines. The disassembler 2583 no longer expects DEBUG to be defined. 2584 2585 Added platform-nullos.cc to serve as the basis for new platform 2586 implementations. 2587 2588 2589 2008-07-30: Version 0.2.0 2590 2591 Changed all text files to have native svn:eol-style. 2592 2593 Added a few samples and support for building them. The samples 2594 include a simple shell that can be used to benchmark and test V8. 2595 2596 Changed V8::GetVersion to return the version as a string. 2597 2598 Added source for lazily loaded scripts to snapshots and made 2599 serialization non-destructive. 2600 2601 Improved ARM support by fixing the write barrier code to use 2602 aligned loads and stores and by removing premature locals 2603 optimization that relied on broken support for callee-saved 2604 registers (removed). 2605 2606 Refactored the code for marking live objects during garbage 2607 collection and the code for allocating objects in paged 2608 spaces. Introduced an abstraction for the map word of a heap- 2609 allocated object and changed the memory allocator to allocate 2610 executable memory only for spaces that may contain code objects. 2611 2612 Moved StringBuilder to utils.h and ScopedLock to platform.h, where 2613 they can be used by debugging and logging modules. Added 2614 thread-safe message queues for dealing with debugger events. 2615 2616 Fixed the source code reported by toString for certain builtin 2617 empty functions and made sure that the prototype property of a 2618 function is enumerable. 2619 2620 Improved performance of converting values to condition flags in 2621 generated code. 2622 2623 Merged disassembler-{arch} files. 2624 2625 2626 2008-07-28: Version 0.1.4 2627 2628 Added support for storing JavaScript stack traces in a stack 2629 allocated buffer to make it visible in shallow core dumps. 2630 Controlled by the --preallocate-message-memory flag which is 2631 disabled by default. 2632 2633 2634 2008-07-25: Version 0.1.3 2635 2636 Fixed bug in JSObject::GetPropertyAttributePostInterceptor where 2637 map transitions would count as properties. 2638 2639 Allowed aliased eval invocations by treating them as evals in the 2640 global context. This may change in the future. 2641 2642 Added support for accessing the last entered context through the 2643 API and renamed Context::Current to Context::GetCurrent and 2644 Context::GetSecurityContext to Context::GetCurrentSecurityContext. 2645 2646 Fixed bug in the debugger that would cause the debugger scripts to 2647 be recursively loaded and changed all disabling of interrupts to 2648 be block-structured. 2649 2650 Made snapshot data read-only to allow it to be more easily shared 2651 across multiple users of V8 when linked as a shared library. 2652 2653 2654 2008-07-16: Version 0.1.2 2655 2656 Fixed building on Mac OS X by recognizing i386 and friends as 2657 IA-32 platforms. 2658 2659 Added propagation of stack overflow exceptions that occur while 2660 compiling nested functions. 2661 2662 Improved debugger with support for recursive break points and 2663 handling of exceptions that occur in the debugger JavaScript code. 2664 2665 Renamed GetInternal to GetInternalField and SetInternal to 2666 SetInternalField in the API and moved InternalFieldCount and 2667 SetInternalFieldCount from FunctionTemplate to ObjectTemplate. 2668 2669 2670 2008-07-09: Version 0.1.1 2671 2672 Fixed bug in stack overflow check code for IA-32 targets where a 2673 non-tagged value in register eax was pushed to the stack. 2674 2675 Fixed potential quadratic behavior when converting strings to 2676 numbers. 2677 2678 Fixed bug where the return value from Object::SetProperty could 2679 end up being the property holder instead of the written value. 2680 2681 Improved debugger support by allowing nested break points and by 2682 dealing with stack-overflows when compiling functions before 2683 setting break points in them. 2684 2685 2686 2008-07-03: Version 0.1.0 2687 2688 Initial export. 2689 2690
