[FFmpeg-devel] [PATCH] split-radix FFT

[Michael Niedermayer]

On Tue, Jul 29, 2008 at 06:18:19PM +0300, Uoti Urpala wrote:
> On Tue, 2008-07-29 at 16:46 +0200, Michael Niedermayer wrote:
> > On Tue, Jul 29, 2008 at 05:32:44PM +0300, Uoti Urpala wrote:
> > > On Tue, 2008-07-29 at 16:18 +0200, Michael Niedermayer wrote:
> > > > On Tue, Jul 29, 2008 at 07:36:06AM -0600, Loren Merritt wrote:
> > > > > On Tue, 29 Jul 2008, Michael Niedermayer wrote:
> > > > > >
> > > > > > Also if i use MANGLE to access the 2 root2 globals things clear up a bit in
> > > > > > the code generated, so i would suggest that to be done at least, even if
> > > > > > the asm stays split up.
> > > > > 
> > > > > If we don't actually require the output to be position independent, isn't 
> > > > > the simpler solution to not compile with -fPIC? 

> > > > > Or are we doing some sort 
> > > > > of informed trade-off where only the most cpu-intensive functions get 
> > > > > textrels?
> > > > 
> > > > Thats a good argument as well.
> > > 
> > > Funny how you didn't find the argument good at all when I mentioned it
> > > while talking about MANGLE earlier... :)
> > 
> > You argued in favor of using MANGLE ?
> 
> Against using it. The argument being that if you don't want PIC, don't
> compile with -fPIC (the asm files at least) instead of using -fPIC and

The argument to which i replied is not choosen by you after my reply!
I replied to the sentance above my reply not to some sentance prior to it.
Ive added an empty line now above so you can see it more clearly.


[...]
> > > >  Though i was more thinking of distributions
> > > > that have a policy that says -fPIC must be added to the flags.
> > > > 
> > > > http://www.debian.org/doc/debian-policy/ch-files.html:
> > > > 10.2 Libraries
> > > 
> > > Currently FFmpeg in Debian is built without -fPIC on x86.
> > 
> > Iam happy to hear this, still the point stands, distributions have such
> > requirements. And it takes the package maintainer quite a bit of work (or
> > rulebreaking) to not compile with -fpic.
> 
> And how does using MANGLE improve things? 

It makes the code run faster and makes it smaller, but i said that already.
Hell thats the argument from loren that started your trolling ...

[...]

-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

There will always be a question for which you do not know the correct awnser.
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