Re: [tree-ssa] AST optimizer in C++?

[Diego Novillo <dnovillo at redhat dot com>]

On Sun, 25 Aug 2002, Chris Lattner wrote:

> > The approach we use now does not interfere with the underlying
> > IR.  What it does is overlay a web of def-use/use-def pointers on
> 
> Is there a reason that you'd like to have a SIMPLE form that is not in
> SSA?
> 
Only that nobody has bothered implementing it.  We'd need to
represent PHI nodes in the IR and teach the rest of the compiler
how to deal with them (RTL expanders, tree manipulation, etc).
In principle it would be a rather mechanic, albeit large, patch.


Diego.