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[Bug tree-optimization/42771] New: [4.5 Regression] ICE: in graphite_loop_normal_form, at graphite-sese-to-poly.c (2)


The original, unreduced, testcase from pr42521 started crashing again, with the
same error message. Only little modification to the reduced testcase is needed
to reproduce it.

Command line:
gcc -O3 -fgraphite-identity -c testcase.c

Tested revisions (x86_64):
r155945 - crash (x86)
r155938 - crash
r155902 - crash
- r155881 - pr42732 fix (can be related)
r155844 - OK (x86)
r155833 - OK
- r155728 - pr42521 fix
r155363 - crash

Output:
$ /mnt/svn/gcc-trunk/binary-155945-x86-lto/bin/gcc -O3 -fgraphite-identity -c
testcase.c
testcase.c: In function 'foo':
testcase.c:5:6: internal compiler error: in graphite_loop_normal_form, at
graphite-sese-to-poly.c:2844
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Valgrind:
no errors reported


-- 
           Summary: [4.5 Regression] ICE: in graphite_loop_normal_form, at
                    graphite-sese-to-poly.c (2)
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: zsojka at seznam dot cz
  GCC host triplet: x86(_64)-pc-linux-gnu
GCC target triplet: x86(_64)-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42771


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