Bob Rossi writes:
> On Thu, Mar 16, 2006 at 05:58:29PM -0800, Brian Budge wrote:
> > Hi -
> >
> > This is not really a gcc question, and it should really be asked
> > elsewhere... however, it's unlikely that this occasional dereference
> > will adversely affect performance.
>
> OK, where should a question like this be asked? if not the compiler that
> does the optimization?
I agree with you, Bob -- it's a perfectly reasonable question.
> I forgot to mention, I only really care about the efficiency
> regarding gcc's output.
Well, if you really want to know, use "gcc -S".
Access to a local is something like
movl 8(%ebp), %eax
and to a global via a pointer
movl sfoo, %eax
movl 4(%eax), %eax
Andrew.
