[PD-dev] FYI: gcc 4.1 in auto-build

Tim Blechmann tim at klingt.org
Mon Aug 14 11:02:56 CEST 2006

On Sun, 2006-08-13 at 21:29 -0400, Hans-Christoph Steiner wrote:
> Just an FYI: I set up the Debian/etch (testing) box to use gcc 4.1.   
> Both pd-MAIN and Pd-extended are compiling fine with gcc 4.1.  It  
> would be nice to try some of the auto-vectorization features.  Has  
> anyone messed with them at all?

the biggest problem, the compiler faces, is not only the loop itself,
but memory alignment and aliasing ... if the compiler doesn't allocate
the memory itself, it's unlikely that it generates decent vectorized
code ...
so, i suppose, the performance gain of auto-vectorization for pd is more
or less placebo
but iirc, there is an -ftree-vectorizer-verbose option for gcc to get
some information from the vectorizer ...

cheers ... tim

tim at klingt.org    ICQ: 96771783

Which is more musical, a truck passing by a factory or a truck passing
by a music school?
  John Cage
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 189 bytes
Desc: This is a digitally signed message part
URL: <http://lists.puredata.info/pipermail/pd-dev/attachments/20060814/7e9c6919/attachment.pgp>

More information about the Pd-dev mailing list