[tree-ssa] Syntactic structures

[Zdenek Dvorak]

Hello,

> > With the current status of things one should keep two representations,
> > the cfg and the syntax tree, synchronized.  A modification in one 
> > representation have to update the other representation.  This is redundant.
> > 
> Right.  This is what I was referring to when I mentioned performance.
> IMO, the duality of the data structures needs to disappear.  A single
> data structure (the CFG) physically containing sequences of tree or RTL
> statements is what I would like us to move to.

fine, so say I have (at least) a week of time now and a will to do it.
Is it OK with everyone?  I would be gracious about any comments on
points where I could run into problems.

> Several ideas have been proposed about this issue, but to date I don't
> think anybody has implemented any of them.  Perhaps this would be a good
> time to rehash the ideas again and get something going.

Some discussion(s) in mailing list I should know about?

Zdenek