Loop optimizer issues

[Zdenek Dvorak]

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   optimizer on tree-ssa than the outdated mess we have currently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