Re: Horrible compiletimes and memory usage while compiling a parser with X3

On 03/11/2016 9:15 AM, teajay wrote:
> Le 26/10/2016 à 19:03, Exagon a écrit :
>> of course these are the numbers of my project, which has some more code under
>> the hood, I I dont think the example of the problem will generate a binary
>> as big as the one from my project was, but the source of the bad compile
>> times and huge binarys can definetly be found in the small example I showed
>> you.
>> Greetings Exagon
>>
>
> I managed to get the code compiled successfully with a reasonable
> compile time and memory usage with the latest clang version. I didn't
> have any success with gcc however.
>
> I tried to identify template instantiations loops using templight but
> found nothing really bothering.
>
> I guess you ran into a case where spirit drove the compiler over the
> edge, or into a bug. This can happen. Sometimes a new compiler helps get
> the problem fixed.

For those willing to help do some investigation, the issue is what really is
the compiler instantiating and why there's a lot. I'm guessing there might
be an excessive instantiation loop from top-level to the leaves and up
again. The error trace provides the instantiation information.

Regards,
-- 
Joel de Guzman
http://www.ciere.com
http://boost-spirit.com
http://www.cycfi.com/


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