[tree-ssa] RFC: Making control flow more explicit

[Zdenek Dvorak]

Hello,

> > > I'd be happy to test them if you sent me the huge patch.
> > 
> > here is the patch; it should bootstrap at least c and c++.
> 
> 
> In fact it bootstraps c,c++,objc,java,gfortran + libraries.  I'm running
> the test suites now.
> 
> But why have disabled DCE?

on two places it uses parent_{block,stmt}. Since these are removed with the patch,
I have disabled it until I have a time to investigate what is needed to
change there.

Zdenek