Hi Benjamin,
Thanks for idea.
With PHP7 AST compiler, it's quite easy to implement this (it took us 15
minutes to try :)
However, it doesn't make big improvement on our benchmarks.
We will take a look into possibilities to apply your idea to other patterns
(e.g. for and foreach loops).
Anyway,
Hey:
On Sat, Jan 17, 2015 at 12:12 AM, Dmitry Stogov dmi...@zend.com wrote:
Hi Benjamin,
Thanks for idea.
With PHP7 AST compiler, it's quite easy to implement this (it took us 15
minutes to try :)
yeah... by handy :)
However, it doesn't make big improvement on our benchmarks.
in reallife
See the patch for while and for loops
https://gist.github.com/dstogov/9cc5767a14f3b88e1275
All tests passed.
The patch leads to 2% improvement in number of CPU instructions retired on
bench.php.
Unfortunately, It doesn't make any visible speed difference.
Anyway, I'm going to commit it on
On Fri, Jan 16, 2015 at 6:09 PM, Dmitry Stogov dmi...@zend.com wrote:
See the patch for while and for loops
https://gist.github.com/dstogov/9cc5767a14f3b88e1275
All tests passed.
The patch leads to 2% improvement in number of CPU instructions retired on
bench.php.
Unfortunately, It
...@zend.com
To: Benjamin Coutu ben.co...@zeyos.com
Date: Fri, 16 Jan 2015 17:12:34 +0100
Subject: Re: [PHP-DEV] Generating more efficient code for while-loop
Hi Benjamin,
Thanks for idea.
With PHP7 AST compiler, it's quite easy to implement this (it took us 15
minutes to try :)
However, it doesn't
Subject: Re: [PHP-DEV] Generating more efficient code for while-loop
Hi Benjamin,
Thanks for idea.
With PHP7 AST compiler, it's quite easy to implement this (it took us 15
minutes to try :)
However, it doesn't make big improvement on our benchmarks.
We will take a look into possibilities
Hello,
Please consider the following PHP code:
while ( CONDITION ) {
STATEMENT
}
It currently compiles to something like this for the Zend Engine:
0: CONDITION
1: JMPZ - 4
2: STATEMENT
3: JMP - 0
4: ...
This can easily be rewritten in an equivalent but much more efficient form:
0: JMP - 2
