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Re: auto vectorization in gcc



On Thursday, July 17, 2003, at 3:55 PM, Steven Bosscher wrote:


Op do 17-07-2003, om 21:42 schreef law@redhat.com:
In message <1058450952.3307.60.camel@frodo.toronto.redhat.com>, Diego Novillo w
rites:
I don't think there's much risk in duplicating effort at the moment.
I'm not aware of anybody working on vectorization today.
Agreed.  Hell, we really don't have anyone even working on the loop
optimizer for trees yet.  Given that we're going to need an unroller
and basic loop opts, that might be a great place to start.

Huh? Aldy Hernandez sort-of announced he was going to work on an autovectorization pass following the Larsen paper (http://gcc.gnu.org/ml/gcc/2003-06/msg00175.html, http://citeseer.nj.nec.com/larsen00exploiting.html, etc.).

And dberlin had his loop normalization pass, but this work was put on
hold pending the IV work Sebastian Pop was (is?) doing (Pop how's that
coming? ;-).


I've also been working on various other loop optimizations (strength reduction) now that PRE and points-to work.




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