Loop optimizer issues

[Zdenek Dvorak]

Hello,

> > there was discussion about this about a month ago and I had feeling
> > people mostly agreed with the idea of merging.  My main reason is that
> > I would like to heavily share code between rtl-level loop optimizer
> > and tree-level loop optimizer I would like to work on.
> 
> 
> tree-ssa does regular merges with mainline, so once this was merged into
> mainline, it would become part of tree-ssa very shortly thereafter, and
> the code sharing could begin :-)
> 
> That way there are no multiple-experimental code base merge issues. 

but there is also no way how the merge you propose could be done in this
stage of development.

Zdenek