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Re: 10 Nov notes from GCC improvement for Itanium conference call
- From: Richard Guenther <richard dot guenther at gmail dot com>
- To: Andrew Pinski <pinskia at physics dot uc dot edu>
- Cc: mksmith at gelato dot org, Gelato-GCC <gelato-gcc at gelato dot unsw dot edu dot au>, GCC <gcc at gcc dot gnu dot org>
- Date: Tue, 15 Nov 2005 20:17:09 +0100
- Subject: Re: 10 Nov notes from GCC improvement for Itanium conference call
- References: <000101c5ea16$bb1ac100$91e4dd8c@smith> <200511151912.jAFJCH6o009630@earth.phy.uc.edu>
On 11/15/05, Andrew Pinski <pinskia@physics.uc.edu> wrote:
> > I told about importance of early access to machines based on new
> > Itanium chip (Montecito) and documentation for gcc developers trying
> > to improve gcc for Itanium.
> >
> > As for Mark Davis remark about rewriting RTL optimizations, I told
> > that it can not be done easily.
>
> HUH? An example of something which can be rewritten easy and make
> an improvement on IA64 is the ifcvt pass which can make more use
> of ia64's predicates.
Note that I hope to be continuing to work on a rewrite of ifcvt soon. The basic
idea is to split it into pre- and post-reload parts (basically not touching the
post-reload part). I have started doing this already after the ifcvt patches I
posted this summer.
Richard.