Symtab node table introduction and GGC issues

[Jan Hubicka]

> > Hello,
> >    thank you for you advice. It really looks that I face the same issue as
> > you seen. As you suggested, I will start with a global pointer to symtab and
> > we'll see further integration into context class (where it should reside
> > according to me).
> 
> Note that I would suggest an explicit marking function for this singleton
> (thus GTY((user))).  Most pointers of the symtab stuff doesn't need following
> but everything is held together by the single array/map?

symtab is streamed to PCH, sadly, so you need to have enough of anotation to get
pointers fixed up at stream in.

honza
> 
> Richard.
> 
> > Thanks,
> > Martin
> >
> >
> >>
> >> Hope this is helpful
> >> Dave
> >>
> >