[Bug tree-optimization/16158] [3.5 Regression] O(N^2) in tree-ssa-pre.c

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|O(N^2) in tree-ssa-pre.c    |[3.5 Regression] O(N^2) in
                   |                            |tree-ssa-pre.c
   Target Milestone|---                         |3.5.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16158