Low overhead fcall (only PHP 5.6)

[andresgutierrez]

This PR introduces a specialized function to call functions in the PHP userland removing many internal intermediate structures. zephir_call_func_aparams_fast is only used when an inline local cache is available for the method. This is when a function is called more than once in the same method or a function is called within a loop.

The following code:

public static function guid()
{
        return sprintf("%04X%04X-%04X-%04X-%04X-%04X%04X%04X", 
            rand(0, 65535), rand(0, 65535), 
            rand(0, 65535), rand(16384, 20479), 
            rand(32768, 49151), rand(0, 65535), 
            rand(0, 65535), rand(0, 65535));
}

Benchmark (executed 1'000.000 times):

v0.6.2 3289 milliseconds
v0.6.3 2149 milliseconds
65% improvement

[sergeyklay]

👍

[ovr]

Nice work 👍

[Green-Cat]

👍

[sergeyklay]

Benchmark for php/hhvm http://3v4l.org/luMgY

[pasmanp]

this only apply to php 5.6.x ?

[nkt]

Great! 👍

[nkt]

I guess we should update version.