[PD-dev] gcc 4.1 and auto-vectorization

Thomas Grill gr at grrrr.org
Sun Nov 19 11:13:56 CET 2006

Am 19.11.2006 um 05:00 schrieb Hans-Christoph Steiner:

> On Nov 18, 2006, at 8:07 PM, Thomas Grill wrote:
>> Am 18.11.2006 um 22:16 schrieb Mathieu Bouchard:
>>> On Sat, 18 Nov 2006, Hans-Christoph Steiner wrote:
>>>> I really doubt that the gcc devs put a lot of effort into  
>>>> something that has no effect. Perhaps not for Pd, that may be  
>>>> true.  But they are talking about vectorizing loops, it may not  
>>>> be the best thing to vectorize, but there are definitely  
>>>> vectorizable loops in Pd.
>>> perhaps it would be a good start to reimplement newbytes(n) using  
>>> memalign(16,n) instead of malloc(n).
>> A few years ago i introduced aligned memory allocation in the pd- 
>> devel branch.
> Have you tried submitting a patch?  It would be at least useful in  
> Pd-extended.  How big a difference did it make?

I have a better idea. People interested in improvements can easily  
make a diff from the devel branch.
The aligned memory allocation is part of the SIMD codelets which have  
been part of pd-devel for a long time.

best greetings,

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