[tree-ssa][ GC, Virtual operands, and GCing between passes

[Geoff Keating]

Andrew MacLeod <amacleod@redhat.com> writes:

> I have array of pointers to trees.
> 
> so 
> 
> tree **defs;

That's an array of pointers to pointers to trees.  'tree' is a pointer
to a tree.

-- 
- Geoffrey Keating <geoffk@geoffk.org>