[mythtv] motion_est_template.c:178: error: can't find a register in class?`GENERAL_REGS' while reloading `asm'

[Janne Grunau]

On Monday 08 October 2007 05:49:24 Axel Thimm wrote:
> On Mon, Oct 08, 2007 at 01:41:13AM +0200, Janne Grunau wrote:
> > On Sunday 07 October 2007 23:46:41 Axel Thimm wrote:
> > > Hi,
> >
> > ...
> >
> > > x86_64 builds are fine though (they have more registers), so it
> > > looks like a register starvation issue maybe caused by different
> > > optimization levels. The packages are built for i386 with i686
> > > optimizations, but not requiring i686. The same setup worked with
> > > trunk/r14374 (a month ago) and also works with the current
> > > 20-fixes code.
> > >
> > > Is there anything I can do to fix it, or if this is a general
> > > issue, could it be fixed in the trunk? Thanks!
> >
> > yes, don't remove -fomit-frame-pointer from OPTFLAGS
>
> But isn't that on by default with even -O1?

From gcc's man page:
| -O also turns on -fomit-frame-pointer on machines where doing so does
| not interfere with debugging." 

Which was true for x86.

> Maybe the debug flags 
> kill it? I see a CAN_DEBUG_WITHOUT_FP in gcc's info referring to it
> which implies that debugging flags turn this off.

not debuging but -O doesn't activate it.

Janne