GIV optimizations

[Zdenek Dvorak]

Hello,

> Giv optimizations are just features which not 
> implemented yet in the new loop unroller, so I think 
> put it in bugzilla is not appropriate.

it most definitely is appropriate.  This is a performance
regression.  Even if it would not be, feature requests
can be put to Bugzilla.

The best of course would be if you could create a small testcase
demonstrating what you would like the compiler to achieve.

Zdenek