[Bug tree-optimization/93167] New: [graphite] One another ICE with isl-0.22

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93167

            Bug ID: 93167
           Summary: [graphite] One another ICE with isl-0.22
           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: ---

One another ICE:

$ gcc  /home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/torture/pr68955.c
-floop-parallelize-all -Ofast -c
during GIMPLE pass: graphite
/home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/torture/pr68955.c: In
function ‘main’:
/home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/torture/pr68955.c:36:1:
internal compiler error: Segmentation fault
   36 | main ()
      | ^~~~
0xdef32f crash_signal
        /home/marxin/Programming/gcc/gcc/toplev.c:328
0x7f520f25714f ???
       
/usr/src/debug/glibc-2.30-2.1.x86_64/signal/../sysdeps/unix/sysv/linux/x86_64/sigaction.c:0
0x16cc2ba scop_get_dependences(scop*)
        /home/marxin/Programming/gcc/gcc/graphite-dependences.c:320
0x16c9a3f translate_isl_ast_to_gimple::scop_to_isl_ast(scop*)
        /home/marxin/Programming/gcc/gcc/graphite-isl-ast-to-gimple.c:1399
0x16cb231 graphite_regenerate_ast_isl(scop*)
        /home/marxin/Programming/gcc/gcc/graphite-isl-ast-to-gimple.c:1479
0x16c6f93 graphite_transform_loops()
        /home/marxin/Programming/gcc/gcc/graphite.c:471
0x16c74b0 graphite_transforms
        /home/marxin/Programming/gcc/gcc/graphite.c:537
0x16c74b0 execute
        /home/marxin/Programming/gcc/gcc/graphite.c:614
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