[Bug fortran/70857] New: [6 Regression] ICE with -fopenmp -fopenacc in insert_vi_for_tree, at tree-ssa-structalias.c:2813

[gerhard.steinmetz.fort...@t-online.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70857

            Bug ID: 70857
           Summary: [6 Regression] ICE with -fopenmp -fopenacc in
                    insert_vi_for_tree, at tree-ssa-structalias.c:2813
           Product: gcc
           Version: 6.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gerhard.steinmetz.fort...@t-online.de
  Target Milestone: ---

For testcase .../gcc/testsuite/gfortran.dg/gomp/gridify-1.f90
and optimization level -Og, -Os, -O1 or higher :

$ gfortran-6 -O2 -fopenmp -fopenacc -c gridify-1.f90
internal compiler error: in insert_vi_for_tree, at tree-ssa-structalias.c:2813