aobench on Hiphop PHP

I ported aobench from C to PHP then run it on HHVM (HipHop PHP).

https://gist.github.com/tai2/5151955

Below is a benchmark result.

host	time(sec)	index
C(gcc -O2)	1.19	1
Zend PHP	285.01	240
HHVM(JIT OFF)	185.70	156
HHVM(JIT ON)	52.19	44

My environment is Ubuntu 12.04 on Parallels(virtual machine) on Mac OSX(Because I don't have any Linux machines). So there may be a bit of overhead although C implementation score is even 1.15 sec on native Mac environment. CPU is 1.7GHz Core i5 and 1 core is assigned to Parallels.

By the way Ubuntu 12.04 is the easiest platform to try HHVM currently.

Taiju Muto 2013.3.15