auto-vectorization

[James A. Morrison]

James Cloos <cloos@jhcloos.com> writes:

> What is the status of the auto-vectorization support in 4.0?
> 
> I grabbed the latest snapshot yesterday and tried compiling asterisk¹
> with it.  (Incidently, before I found -ftree-vectorize in the docs,
> the 4.0-compiled codecs were slower as shown by asterisk's show
> translations command than the 3.4.2-compiled codecs.)  However, with
> the -ftree-vectorize option the compiled crapped out when compiling
> certain of the codecs with an internal compiler error.

 ICEs are bugs.
 
> Before working on a proper bug report, I wanted to find out whether
> the code is supposed to be functional, has any know issues, etc.
> Ie whether such a report is desired.

 Check in bugzilla to ensure your bug hasn't already be reported.  I was
able to compile ffmpeg with -ftree-vectorize -maltivec on ppc-linux with only
two files causes problems, neither caused by -ftree-vectorize.

> -JimC
> 
> ¹ cf asterisk.org
> 


-- 
Thanks,
Jim

http://www.student.cs.uwaterloo.ca/~ja2morri/
http://phython.blogspot.com
http://open.nit.ca/wiki/?page=jim