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Re: Enable -fomit-frame-pointer on i386

On Sun, Feb 08, 2004 at 05:06:12PM +0100, Jan Hubicka wrote:

> > Just FYI, it will also make oprofile's call-graph mode near useless when
> > this is adopted by the distributions. I realise that nobody will care
> > when compared to the speed improvements, but it's certainly
> > inconvenient.
> 
> oprofile can be turned to use dwarf2 based unwinding too.  That would be
> necessary to get it working on x86-64 anyway.

I already mentioned to you on IRC that it cannot. It's not even slightly
possible:

o) the fp chasing is in-kernel
o) the fp chasing needs to be fast

I'm aware that the technique wouldn't work on several architectures.

regards,
john

-- 
Khendon's Law:
If the same point is made twice by the same person, the thread is over.
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