Mark Williams
270227c36c
Instead of appending the new closure to the end of the list, the list was being cleared, and then the new closure was added. Most closures only get one clone (since we don't yet support bind) but occaisionally, closures (or continuations in closures) inside traits can end up with more than one. In that case, we ping-pong between the different clones, generating new clones, and new code as we go.
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.
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