[Bug c++/13181] New: Code optimized with frerun-cse-after-loop doesn't work properly

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

using g++ (GCC) 3.3 on IRIX 6.5.22  mips on the attached file (cyclone.cpp) from the really slick screensavers.
when compiling with either -O1 or above or when using -frerun-cse-after-loop, the resulting program doesn't work properly - every object  (except the optional lines) is black. When using -O0 or any options except -frerun-cse-after-loop, the resulting program works as expected.

actual command line used:
g++ -mips4 -DHAVE_CONFIG_H -I.  -I../.. -I../../include -I../../src -frerun-cse-after-loop  -c -o cyclone.o cyclone.cpp
(no output, this compiles without warnings or errors)

-- 
           Summary: Code optimized with frerun-cse-after-loop doesn't work
                    properly
           Product: gcc
           Version: 3.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: gnu-gcc at canavan dot de
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13181