[Ffmpeg-devel] Compiler error in latest CVS
Fri Mar 24 20:55:00 CET 2006
On Fri, 2006-03-24 at 14:10 -0500, Rich Felker wrote:
> On Fri, Mar 24, 2006 at 02:00:18PM -0500, Robert Edele wrote:
> > That looks like my code. If PIC support is very important to anyone
> > (whatever that is), they're free to write a patch that avoids the use of
> > ebx. Avoiding it is easy in vertical_compose, but it will likely be very
> > hard to avoid using in inner_add_yblock because every register gets
> > used, and I already had to make sacrifices to squeeze it in the existing
> > registers. A loss of speed in add_yblock is also inevitable if ebx is
> > not used (perhaps as little as a push and pop of ebx if you can use that
> > with GCC inline assmebly).
> Ability to use push/pop depends on none of the "m" arguments being
> esp-relative. Not sure how this affects your case since i didn't RTFS.
Stack variables are used and thus esp must be preserved or accounted
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