Ricardo B (ricardo.b.delete@this.xxxxx.xx) on August 19, 2012 11:02 am wrote:
> anon (anon.delete@this.anon.com) on August 18, 2012 2:23 am wrote:
> >
> >
> So it could certainly do a lot better. I
> > suspect a really aggressive and
> smart whole program optimizer and register
> > allocator could take
> significantly more advantage of large register counts, but
> > perhaps these
> kinds of optimizations are just too expensive with current
> >
> technology.
>
> I think the improvements will be marginal, *specially* with
> larger register counts.

We're talking about compiler making better use of more registers, so improvement should be larger with more registers available.

> A proper caller-saved/callee-saved convention already
> provides the majority of the benefit.
> And if it's case where it matters... it's
> probably a case for inlining the callee.

I think those are two independent concerns. Inlining is already done. And you don't necessarily want to do it if it results in code bloat.