[Bug tree-optimization/41305] New: ICE with -O3 -floop-interchange

[jakub at gcc dot gnu dot org]

The following testcase ICEs on x86_64-linux on branches/gcc-4_4-branch with -O3
-floop-interchange:
Unable to coalesce ssa_names 99 and 106 which are marked as MUST COALESCE.
xi$data_$size__99(ab) and  xi$data_$size__106(ab)
/tmp/rh520785.ii: In function ‘void foo(int)’:
/tmp/rh520785.ii:321: internal compiler error: SSA corruption
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
Couldn't reproduce this on the trunk, but that doesn't mean the bug isn't
latent there.  Doesn't reproduce without -floop-interchange, so I assume it is
graphite which is at fault here.


-- 
           Summary: ICE with -O3 -floop-interchange
           Product: gcc
           Version: 4.4.2
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: jakub at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41305