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Re: Loop optimizer issues
- From: Zdenek Dvorak <rakdver at atrey dot karlin dot mff dot cuni dot cz>
- To: "S. Bosscher" <S dot Bosscher at student dot tudelft dot nl>
- Cc: 'David Edelsohn ' <dje at watson dot ibm dot com>,'Richard Henderson ' <rth at redhat dot com>,'Geoff Keating ' <geoffk at geoffk dot org>,'Diego Novillo ' <dnovillo at redhat dot com>,'Jason Merrill ' <jason at redhat dot com>, 'Jan Hubicka ' <jh at suse dot cz>,'Daniel Berlin ' <dberlin at dberlin dot org>,"'pop at gauvain dot u-strasbg dot fr '" <pop at gauvain dot u-strasbg dot fr>,"'gcc at gcc dot gnu dot org '" <gcc at gcc dot gnu dot org>
- Date: Thu, 3 Jul 2003 00:07:28 +0200
- Subject: Re: Loop optimizer issues
- References: <4195D82C2DB1D211B9910008C7C9B06F01F37361@lr0nt3.lr.tudelft.nl>
Hello,
> > Zdenek> there is no way how I could manage to finish the loop optimizer
> > work
> > Zdenek> for 3.4, so I don't care.
> >
> > If you are re-writing a loop optimizer for post-GCC 3.4 and GCC
> > 3.5 will use Tree-SSA, what is the purpose of re-writing the RTL loop
> > optimizer?
>
> Well, surely some loop optimizers will still be necessary on RTL even with
> tree-ssa, don't you think?
plus
-- nobody really knows what parts of loop optimizer should be on rtl and
what on ssa
-- it will be much easier to reuse parts (I hope most) of the rewritten
optimizer on tree-ssa than the outdated mess we have currently
Zdenek