[Bug tree-optimization/70956] New: ICE in build_cross_bb_scalars_def, at graphite-scop-detection.c:1725

["vries at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70956

            Bug ID: 70956
           Summary: ICE in build_cross_bb_scalars_def, at
                    graphite-scop-detection.c:1725
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: vries at gcc dot gnu.org
  Target Milestone: ---

$ gcc  src/gcc/testsuite/gcc.dg/tree-ssa/vrp66.c -fgraphite-identity -O2
src/gcc/testsuite/gcc.dg/tree-ssa/vrp66.c: In function âmainâ:
src/gcc/testsuite/gcc.dg/tree-ssa/vrp66.c:827:1: internal compiler error: in
build_cross_bb_scalars_def, at graphite-scop-detection.c:1725
 main ()
 ^~~~
0x1d2e067 build_cross_bb_scalars_def
        src/gcc/graphite-scop-detection.c:1725
0x1d2e3ee graphite_find_cross_bb_scalar_vars
        src/gcc/graphite-scop-detection.c:1796
0x1d2e5a1 try_generate_gimple_bb
        src/gcc/graphite-scop-detection.c:1832
0x1d2ea7f before_dom_children
        src/gcc/graphite-scop-detection.c:1947
0x1ce6174 dom_walker::walk(basic_block_def*)
        src/gcc/domwalk.c:265
0x1d2edb2 build_scops(vec<scop*, va_heap, vl_ptr>*)
        src/gcc/graphite-scop-detection.c:2015
0x1d18996 graphite_transform_loops()
        src/gcc/graphite.c:307
0x1d18ab5 graphite_transforms
        src/gcc/graphite.c:356
0x1d18bd7 execute
        src/gcc/graphite.c:433
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