[Bug c++/22635] New: OVERLOAD should not be a linked list of trees

["pinskia at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

I noticed this when looking at compile time / memory usage of PR 8361 and I noticed that OVERLOAD is 
currently a link list and we only use about 2 of the fields in the tree which seems like a waste for a full 
tree.  I started to change it to be a VEC but ran into problems as it looks like we can be in the middle of 
the linked list but I did not check for sure.

-- 
           Summary: OVERLOAD should not be a linked list of trees
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Keywords: memory-hog, compile-time-hog
          Severity: enhancement
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: pinskia at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22635