This is the mail archive of the
gcc@gcc.gnu.org
mailing list for the GCC project.
Re: [RFC] Contributing tree-ssa to mainline
- From: <tm_gccmail at kloo dot net>
- To: Richard Kenner <kenner at vlsi1 dot ultra dot nyu dot edu>
- Cc: pinskia at physics dot uc dot edu, gcc at gcc dot gnu dot org
- Date: Mon, 19 Jan 2004 15:20:13 -0800 (PST)
- Subject: Re: [RFC] Contributing tree-ssa to mainline
On Mon, 19 Jan 2004, Richard Kenner wrote:
> But any alias/loop optimization cannot really be done on targets like
> IA64 with almost no offset. The IA64 has only room for a zero offset,
> every thing is done in index form.
>
> That doesn't matter. You'd figure out the GIV offset from all the
> computations in RTL. We do that now.
I'm not aware of any code in GCC to "figure out the GIV offset from all
the computations in RTL"?
AFAIK the closest we came to this was Sanjiv's patch for Debray alias
analysis, but this was rejected due to the excessive compile-time
overhead.
Toshi