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Re: Register classes
Daniel Berlin <dberlin@dberlin.org> writes:
> On Aug 19, 2004, at 8:56 AM, Michael Matz wrote:
>
> > Hi,
> >
> > On Wed, 18 Aug 2004, Daniel Berlin wrote:
> >
> >> Just so nobody has any doubts, i have no current plans to do
> >> anything to
> >> the register allocator. I'm just trying to gather more information in
> >> case i decide to mount another future assault on it.
> >>
> >> I should point out something from the below paper though:
> >
> > As this paper didn't yet show up in citeseer (it seems), I would be
> > thankful for this paper.
> >
> I'll send it to you.
>
> > Note that new-ra does not really use register classes for the
> > interference
> > graph, but instead register sets.
> >
> Except they are taken from register classes.
The register sets are taken from register classes and new-ra use
register sets for interference graph. Even more new-ra tracks useless
conflicts. This is conflicts between webs with nonintersected
register sets but intersected live ranges.
Denis.