[PD-dev] gcc 4.1 and auto-vectorization

[Hans-Christoph Steiner]

On Nov 17, 2006, at 7:01 AM, Tim Blechmann wrote:

> On Thu, 2006-11-16 at 16:28 -0500, Hans-Christoph Steiner wrote:
>> Debian/testing now uses gcc 4.1 as its default compiler.  I just
>> noticed when doing the apt-get upgrades.  Has anyone tried the auto-
>> vectorization stuff?  Is it worthwhile with Pd?
>
> you might want to check the archives:
> http://lists.puredata.info/pipermail/pd-dev/2006-08/007324.html
>
> to explain the terms 'alignment' and 'aliasing':
>
> alignment:
> audio blocks are not known to be aligned to 16byte boundaries
>
> aliasing:
> for functions in the form foo(t_sample * a, t_sample * b, int n), the
> compiler is unable to know if the memory regions of a and b are
> overlapping (b may be a+1)

Right, I remember that, I was meaning more has anyone tried any  
benchmarks.

.hc

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