[Bug middle-end/34375] New: internal compiler error: tree check: expected ssa_name, have symbol_memory_tag in is_old_name, at tree-into-ssa.c:566

["dominiq at lps dot ens dot fr" <gcc-bugzilla at gcc dot gnu dot org>]

Since at least revision 130630 (but not in 130463), the gfortran testsuite has
a lot of failures with -O3 on powerpc-apple-darwin9 not present on
i686-apple-darwin9 nor powerpc-apple-darwin8. A reduced case is:

[karma] f90/bug% cat scalarize_ref.f90
! Program to test the scalarizer
program testarray
   implicit none
   integer, dimension (6, 5) :: a

   a = 0
   a(1,2) = 2

   ! The following expression should cause loop reordering
   a(:, 2:4) = a(:, 1:3)

   if (a(1, 3) .ne. 2) call abort
end program

[karma] f90/bug% gfc -O3 scalarize_ref.f90
scalarize_ref.f90: In function 'testarray':
scalarize_ref.f90:2: internal compiler error: tree check: expected ssa_name,
have symbol_memory_tag in is_old_name, at tree-into-ssa.c:566
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

As far as I can tell, it requires both

   a(:, 2:4) = a(:, 1:3)

and

   if (a(1, 3) .ne. 2) call abort


-- 
           Summary: internal compiler error: tree check: expected ssa_name,
                    have symbol_memory_tag in is_old_name, at tree-into-
                    ssa.c:566
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: dominiq at lps dot ens dot fr
 GCC build triplet: powerpc-apple-darwin9
  GCC host triplet: powerpc-apple-darwin9
GCC target triplet: powerpc-apple-darwin9


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34375