new unroller vs ppc

[Jan Hubicka]

> >>>>> Zdenek Dvorak writes:
> 
> Zdenek> Then what would you suggest to do? Cse apparently produces suboptimal
> Zdenek> code in many cases due to this (I guess most of the increments it
> Zdenek> ignores this way are not converted to autoincs anyway). I don't see
> Zdenek> other way than to teach cse to cope with autoincs (but I am not brave
> Zdenek> enough to attempt to do it).
> 
> 	How was the old unroller able to produce better code with this
> same impediment?

It is hooked into strength reduction that knows about autoincrements and
predicts when they are available.

Honza
> 
> David