kma
b082ed0432
On older processors, inc and dec have some specific hazards associated with their preservation of the CF flag. Sandy Bridge doesn't suffer from this, so let's take the code size wins here. Thanks to Guilherme for updating my dated priors on this. Also fix a pair of assembler bugs: no such thing as decl r32 on x64, and some decs were really incs.
HipHop VM for PHP
HipHop VM (HHVM) is a new open-source virtual machine designed for executing programs written in PHP. HHVM uses a just-in-time compilation approach to achieve superior performance while maintaining the flexibility that PHP developers are accustomed to. HipHop VM (and before it HPHPc) has realized >5x increase in throughput for Facebook compared with Zend PHP 5.2.
Required Packages, and Installing and Running HipHop VM
The latest information is available on the wiki.
Contributing to HipHop VM
HipHop VM 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.