Re: [linux-audio-dev] LADSPA Update (http://www.ladspa.org)

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Subject: Re: [linux-audio-dev] LADSPA Update (http://www.ladspa.org)
From: Stefan Nitschke (sn_AT_vtourist.com)
Date: Mon May 22 2000 - 21:59:01 EEST

> > Probably this should be where it ends though, ie let's
> > not endorse -O9 or -ffunny-weird-compiler-trick.
> >
> > - dave
>
> What about -funroll-loops or -funroll-all-loops? I admit I'm an ignoramus when
> it comes to compiler optimizatios, and I don't even really know what loop
> unrolling is, but last time I looked the PGCC FAQ recommended loop unrolling for
> FPU-intensive work.
> I've tried this when compiling csound, and csound definitely takes less time to
> run an orc/sco this way.
> Is there a disadvantage other than increasing the size of the compiled binary?
> Reliability problems or something?
>
> --PW

I usually use:

-O6 -mpentium -ffast-math -funroll-loops -fomit-frame-pointer -fnonnull-objects
-fno-exceptions -fforce-mem -fforce-addr -fcse-follow-jumps
-fexpensive-optimizations -march=pentium -fno-rtti

for CPU/FPU intensive programs ;)

- Stefan

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