ottoni
e2b5b1f6f4
In case a tracelet ends with CGetL + RetC, and IncRef/DecRef pair is generated for the local being returned if it's ref-counted. The current ref-count optimization pass was unable to eliminate this, and this diff tweaks the way HhbcTranslator generates the IR to enable the optimization to kick in. Here's the pattern generated without this diff: CGetL 0 t0 = LdLoc 0 t1 = IncRef t0 RetC ExitWhenSurprised -> L DecRef t0 RetVal t1 ... The source of t0 is not an IncRef, so the optimization doesn't apply. With this diff, the IR is generated as: CGetL 0 t0 = LdLoc 0 t1 = IncRef t0 RetC ExitWhenSurprised -> L DecRef t1 RetVal t0 ... This enables the DecRef to be proved non-zero (becoming a DecRefNZ), so it can be eliminated and the IncRef is sunk to the exit at L.
HipHop for PHP
HipHop is a high performance PHP toolchain. Currently supported platforms are Linux and FreeBSD. There is no OS X support.
Required Packages
The latest information is available on the wiki
- cmake 2.6 is the minimum version
- g++/gcc 4.3 is the minimum version
- Boost 1.37 is the minimum version
- flex
- bison
- re2c
- libmysql
- libxml2
- libmcrypt
- libicu 4.2 is the minimum version
- openssl
- binutils
- libcap
- gd
- zlib
- tbb Intel's Thread Building Blocks
- Oniguruma
- libpcre
- libexpat
- libmemcached
- google-glog (http://code.google.com/p/google-glog/)
- libc-client2007
- libdwarf
- libelf
- libunwind
The following packages have had slight modifications added to them. Patches are provided and should be made against the current source copies.
- libcurl
- hphp/third_party/libcurl.fb-changes.diff
- libevent 1.4
- hphp/third_party/libevent-1.4.14.fb-changes.diff
Installation
You may need to point CMake to the location of your custom libcurl and libevent, or to any other libraries which needed to be installed. The CMAKE_PREFIX_PATH variable is used to hint to the location.
export CMAKE_PREFIX_PATH=/home/user
To build HipHop, use the following:
Linux:
cd /home/user/dev
git clone git://github.com/facebook/hiphop-php.git
cd hiphop-php
git submodule init
git submodule update
export HPHP_HOME=`pwd`
export HPHP_LIB=`pwd`/bin
cmake .
If you are using FreeBSD instead use export - setenv
Once this is done you can generate the build file. This will return you to the shell. Finally, to build, run make. If any errors occur, it may be required to remove the CMakeCache.txt directory in the checkout.
make
Contributing to HipHop
HipHop is licensed under the PHP and Zend licenses except as otherwise noted.
Before changes can be accepted a Contributors Licensing Agreement must be signed and returned.
Running HipHop
Please see the wiki page