[Bug tree-optimization/93612] New: [GRAPHITE] ICE in scop_get_dependences at graphite-dependences.c:316

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93612

            Bug ID: 93612
           Summary: [GRAPHITE] ICE in scop_get_dependences at
                    graphite-dependences.c:316
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
                CC: rguenth at gcc dot gnu.org
  Target Milestone: ---

I see the following graphite ICE:

$ gfortran
/home/marxin/Programming/gcc/gcc/testsuite/gfortran.dg/dependency_58.f90
-fwrapv -fgraphite-identity -O3 -floop-nest-optimize -c
during GIMPLE pass: graphite
/home/marxin/Programming/gcc/gcc/testsuite/gfortran.dg/dependency_58.f90:4:0:

    4 | program main
      | 
internal compiler error: Segmentation fault
0x1359308 crash_signal
        /home/marxin/Programming/gcc/gcc/toplev.c:328
0x7ffff790102f ???
       
/usr/src/debug/glibc-2.30-2.2.x86_64/signal/../sysdeps/unix/sysv/linux/x86_64/sigaction.c:0
0x2246f39 scop_get_dependences(scop*)
        /home/marxin/Programming/gcc/gcc/graphite-dependences.c:316
0x2248a03 optimize_isl
        /home/marxin/Programming/gcc/gcc/graphite-optimize-isl.c:125
0x2248f03 apply_poly_transforms(scop*)
        /home/marxin/Programming/gcc/gcc/graphite-optimize-isl.c:211
0x223bad8 graphite_transform_loops()
        /home/marxin/Programming/gcc/gcc/graphite.c:468
0x223bd75 graphite_transforms
        /home/marxin/Programming/gcc/gcc/graphite.c:538
0x223be9b execute
        /home/marxin/Programming/gcc/gcc/graphite.c:615
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.

I use libisl.so.22.