hhvm/hphp/NEWS

"D<something>"
  - Deleted legacy register allocator and removed the -vEval.HHIRXls option

"Coolio" 21-Jan-2014
  - Turn on Region JIT
  - FastCGI fixes, perf improvements
  - ext_zend_compat fixes
  - Turn on XLS Register Allocator by default
  - Fix server stats reporting
  - 'num' scalar typehint that accepts both ints and floats
  - fix support for typedef'd namespaces
  - don't swallow fatals when autoloading
  - Map collections learned the in-place retain() and retainWithKey()
  - rename Set::difference() to Set::removeAll()
  - Update Set to retain element insertion order
  - remove APC stats
  - Fixes for ARM mode
  - FrozenMap collection
  - Deprecated Vector|Set|Map::put() method removed
  - == between Frozen{Vector|Set|Map} and {Vector|Set|Map} now can return true

"Beastie Boys" 6-Jan-2014
  - Support lex-time binary constants (eg. 0b10111)
  - StreamWrappers now support rmdir, mkdir, rename and unlink
  - Miscellaneous Zend PHP compatibility fixes
  - Default StatCache to off
  - Miscellaneous FastCGI fixes
  - Miscellaneous region compiler fixes
  - Map and StableMap collections use the same underlying implementation
  - Trait requirements enforced
  - hhprof performance improvements
  - Add array to string conversion notice
  - Add RaiseNotice IR opcode
  - Fix VirtualHost.<name>.Pattern matching
  - Fix various memory leaks (pdo_parse_params, Gen*WaitHandle)
  - Import a lot more Zend tests that used to crash or hang
  - Clean up base.h
  - XLS register allocation cleanup
  - Enable region compiler by default for JIT functions in ahot
  - Fatal on eval() in RepoAuthoritative mode
  - Enable LTO for HHVM
  - Fix a few SPL compatibility issues

"Appleseed" 23-Dec-2013
  - Fix issues with DOCUMENT_ROOT in fastcgi
  - Better type inference for collections and builtins in repo mode
  - Shorter syntax for lambda expressions w/ automatic captures
  - Parser support for trait require clauses
  - Move FrozenVector and Set to the HH namespace
  - Fix resource to array conversion
  - Fix a request local memory leak in foreach of apc arrays
  - Initial php_odbc API implementation
  - Implement PHP's hash_copy() function
  - Experimental tool: Memoization Opportunity Profiler
  - Various small parity/behavior fixes (in phar, proc_open, filter_var)
  - A Eval.DumpHhas=1 option to dump hhas for a php file
  - Better warnings in Set::toArray
  - Fix the behavior of foreach loops in finally blocks
  - chmod -x runtime/vm/jit/*.{cpp,h}
  - Changes to make hhvm build clean with clang-3.4
  - Fix array_product to not be bug-compatible with PHP 5.2
  - Change the Map datastructure---preserves order and does faster foreach
  - FrozenSet collection
  - Generate pid.map when we unmap text section, for the perf tool
  - Implemented GlobIterator
  - Implemented Reflection::export and Reflection::getModifierNames

"Tom Yum" 9-Dec-2013
  - support date.timezone in ini files
  - implement fileinfo
  - special comparisons for DateTime
  - delete unimplemented functions
  - support for the finally clause in try blocks

"Huarache" 26-Nov-2013
  - Linker re-ordering of hot functions
  - Huge pages for hot functions
  - Implement ZipArchive
  - preg_replace /e support
  - get_mem_usage() no longer can be negative
  - Userland file system support
  - Implement fileinfo extension
  - wordwrap() fixes
  - PDO::sqliteCreateFunction()
  - Implement NumberFormatter
  - Implement Locale
  - Implement DatePeriod
  - Many reflection fixes
  - Stub out PharData
  - A ton of performance fixes
  - A ton of open source framework fixes
  - FastCGI Server Support

"Garlic Alfredo" 11-Nov-2013
  - teach implode() about collections
  - fix ini parsing leak
  - Make array not an instanceof Traversable

"Burrito" 28-Oct-2013
  - Initial support for using FastCGI
  - Initial support for php.ini configuration files
  - Log when a nullable (e.g. ?int) is incorrect
  - Add support for collections to array_diff, array_diff_key, array_intersect,
    array_intersect_key
  - tc-print improvements and fixes
  - Several debugger fixes
  - More improvements to the experimental PHP extension compat layer
  - Fixed how parse errors are handled by eval()
  - Support custom reason for status header
  - Emit better error message when hhvm's systemlib doesn't load properly
  - Fixes / clarifications added to the bytecode specification
  - Lots of other bug fixes, clean up, PHP compat fixes, and JIT improvements

"Sausage" 14-Oct-2013
  - Direct invocation of callable arrays: $f = [$cls_or_obj, 'method']; $f()
  - ASAN clean
  - Support dynamically loadable extensions
  - Support loading mini-systemlibs from extensions

"Tabasco" 30-Sep-2013
  - Fix issues with __toString() functions that return non-string values
  - Don't allow mock classes to extend collection classes
  - Smarter memory allocation and scheduling for NUMA systems
  - Improve profiler performance in the jit
  - Fix several Zend compatibility issues
  - Fix several bugs uncovered by ASAN
  - Add collection support to array_keys, array_values, and array_combine
  - Return a set-like array from Set::toArray
  - Add to(Vector|Map|StableMap|Set) methods to collections
  - Collections convert to boolean false when empty
  - get_class_vars invokes the autoloader when necessary
  - Rework the Zend compatibility layer to be more robust
  - Allow traits to implement interfaces
  - Support arbitrary expressions inside empty()

"Bobotie" 16-Sep-2013
  - HNI (HipHop Native Interface) for calling C++ functions from PHP
  - Fix PropertyAccessorMap::isset
  - Expose more POSIX constants
  - Fixed behavior of stream_get_contents when default args are used.
  - Implement str_getcsv, and fix some fgetcsv related issues.
  - [IPv6] Fix stream_socket_recvfrom & stream_socket_sendto.
  - [IPv6] Fix socket_sentto_recvfrom_ipv6_udp Zend compatibility.
  - Optimize closure invocation and __invoke (~3x faster to invoke)
  - Import gettext extension
  - string and object allocation optimizations (reduced memory usage for both)
  - Import YAML extension
  - Import ftp extension

"Kimchi" 2-Sep-2013
  - Fix order of custom attributes and visibility in ctor arg promotion
  - Implement CachingIterator
  - Implement RecursiveCachingIterator
  - Generalized heuristic for choosing when to inline in the jit
  - Introduced a Zend compatibility layer to compile extensions
  - Imported calendar extension
  - Use gcc-4.8.1 by default
  - Improve hhvm command line parsing logic
  - Fix register_shutdown in session_set_save_handler to match PHP 5.4
  - Add "native" functions for use in Systemlib
  - PHP extension source-compatitblility layer
  - Fix ArrayIterator constructor PHP compatibility
  - Enable building against libmemcached 1.0.8
  - Debugger: $_ not cleared but still printed after exception
  - Fix clone of SplPriorityQueue
  - Debugger: Fix bugs when multiple threads hit the same breakpoint
  - Fix several namespace bugs
  - Several PHP compatibility fixes for ArrayObject and ArrayIterator
  - Fix list assignment with collection literals
  - support "tuple(...)" in initializer expressions
  - HHVM should compile with libmemcached 1.0.9+
  - Support "(new Vector {..})->method()" style syntax
  - use trigger_error in PHP for Redis user errors
  - multiple simplexml fixes
  - fixed serialize/unserialize for SplObjectStorage
  - Implement ReflectionParameter::IsCallable()

"Achiote" 19-Aug-2013
  - Async stack traces in the debugger via the "wa" command
  - Fix late static binding in static closures
  - Fix breakpoints on generators
  - Add SplObserver and SplSubject interfaces
  - Update Iterable interface and add toArray() method
  - Allow __get for undefined properties
  - Implement get_included_files()
  - Limit use of huge pages

"Churrasco" 05-Aug-2013
  - Implement stream_is_local
  - Implement read support for .phar
  - Implement assert with string arguments
  - Implement RecursiveArrayIterator
  - Implement php_strip_whitespace()
  - Support for timeouts in cli mode
  - Closure allocation optimizations (~2x faster to allocate a closure)
  - Implement Redis session handler
  - New memory profiler, hhprof, with pprof compatible output
  - Update isset($string[$k]) and empty($string[$k) to PHP 5.5 semantics
  - Fixed a few parser bugs
  - Fixed a few bugs with token_get_all()
  - Fix (string)$obj semantics when __toString() is not defined

"Tamale" 22-Jul-2013
  - Optimize vector-shaped Arrays (arrays with keys in range 0..size-1)
  - Enable HHBC by default in debug builds
  - Implement SplObjectStorage::getInfo()
  - Initial rough draft of xhpast2, a replacement for xhpast
  - fix compilation on Ubuntu 13.04
  - OSX changes, next round
  - Modify PHP's ext/standard/math/tests/(pow|abs).phpt to be HHVM friendly
  - add XHP comment syntax based on http://www.w3.org/TR/REC-xml/#sec-comments

"Wasabi Peas" 08-Jul-2013
  - always_assert when we run out of TC space
  - Initial changes to get HHVM compiling on OSX
  - Consolidate ObjectData and Instance
  - Prototype heap tracing framework & Heap profiler
  - Better JIT code generation for Mod and Div
  - Fixes to enable compilation with clang
  - Support for yield k => v
  - Make HHVM's command line parsing closer to PHP
  - Implement Redis extension
  - Implement LimitIterator from SPL
  - add SessionHandler from PHP 5.4
  - Numerous Debugger fixes and new developer docs for Debugger
  - Ported many extension tests to PHP