[Bug c++/14719] New: [tree-ssa] Excessive memory trashing on tree-ssa

["giovannibajo at libero dot it" <gcc-bugzilla at gcc dot gnu dot org>]

This testcase kills tree-ssa with excessive memory trashing (as reported by 
dnovillo, I didn't test it personally).

Otherwise, it would look great:

$ time g++-3.3 -c bitmachine.cc
real    5m56.861s
user    5m22.823s
sys     0m3.514s
RAM peak: 380MB

$ time g++-3.4 -c bitmachine.cc
real    2m47.609s
user    2m27.601s
sys     0m2.682s
RAM peak: 240MB

I'm linking this to PR 13776 which is a placeholder for compile time 
regressions.

-- 
           Summary: [tree-ssa] Excessive memory trashing on tree-ssa
           Product: gcc
           Version: tree-ssa
            Status: UNCONFIRMED
          Keywords: memory-hog
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: giovannibajo at libero dot it
                CC: dnovillo at redhat dot com,gcc-bugs at gcc dot gnu dot
                    org
OtherBugsDependingO 13776
             nThis:


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14719