[Python-Dev] JITted regex engine from pypy

[Maciej Fijalkowski]

On Sun, Jun 3, 2012 at 5:21 PM, "Martin v. Löwis" <martin at v.loewis.de>wrote:

>  On the minus side, the JIT only works on x86 and x86_64, on the plus
>> side, since it's 100% API compatible, it can be used as a _xxx
>> speedup module relatively easy.
>>
>> Do people have opinions?
>>
>
> The main concern for re is not speed, but functionality. The Python re
> module needs to grow a number of features, and correct a number of bugs.
> So 100% compatible is actually not good enough. 95% compatible (with
> the features added and the bugs fixed) would be better.
>
> OTOH, sharing the re code with PyPy would be a desirable goal, as would
> be writing the re code in Python (although SRE already implements
> significant parts in Python).
>

We did not reimplement those parts in RPython, they're still in python (so
the sre engine does not accept regex, but instead the lower-level
description, etc. etc.)


>
> As a speedup module, it's uninteresting - we want to simplify maintenance,
> not complicate it. So this can only work if it replaces
> SRE.
>
> Regards,
> Martin
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-dev/attachments/20120603/ceccdc4c/attachment-0001.html>