[Bug fortran/84963] New: [8 Regression] ICE in get_constraint_for_ssa_var, at tree-ssa-structalias.c:2955

[gscfq@t-online.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84963

            Bug ID: 84963
           Summary: [8 Regression] ICE in get_constraint_for_ssa_var, at
                    tree-ssa-structalias.c:2955
           Product: gcc
           Version: 8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gscfq@t-online.de
  Target Milestone: ---

Changed between 20180311 and 20180318, reappearance of pr70856 :


$ cat z1.f90
program p
   print *, sin([1.0, 2.0])
   print *, cos([1.0, 2.0])
end


$ gfortran-8-20180311 -c z1.f90 -fopenacc -O2
$ gfortran-8-20180318 -c z1.f90 -fopenacc -O1
$
$ gfortran-8-20180318 -c z1.f90 -fopenacc -O2
during IPA pass: pta
z1.f90:4:0:

 end

internal compiler error: in get_constraint_for_ssa_var, at
tree-ssa-structalias.c:2955
0xd2f3b0 get_constraint_for_ssa_var
        ../../gcc/tree-ssa-structalias.c:2952
0xd2f4de get_constraint_for_1
        ../../gcc/tree-ssa-structalias.c:3559
0xd2f5c9 get_constraint_for_component_ref
        ../../gcc/tree-ssa-structalias.c:3237
0xd2f5c9 get_constraint_for_1
        ../../gcc/tree-ssa-structalias.c:3514
0xd31bf7 find_func_aliases
        ../../gcc/tree-ssa-structalias.c:4911
0xd392e1 ipa_pta_execute
        ../../gcc/tree-ssa-structalias.c:7988