[Bug middle-end/52621] ICE with -O3 -march=opteron in initialize_matrix_A, at tree-data-ref.c:1964

[burnus at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52621

Tobias Burnus <burnus at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-valid-code
          Component|fortran                     |middle-end
            Summary|ICE when compiling          |ICE with -O3 -march=opteron
                   |Fortran77 code with         |in initialize_matrix_A, at
                   |optimization                |tree-data-ref.c:1964
      Known to fail|                            |4.6.1, 4.8.0

--- Comment #5 from Tobias Burnus <burnus at gcc dot gnu.org> 2012-03-21 
13:29:44 UTC ---
I can reproduce it on x86-64-gnu-linux with:
  gfortran -march=opteron -O3 -w -c file.f

The crucial flag is the "opteron" - it works with "core2".