[Bug tree-optimization/50561] [4.7 regression] ICE when compiling zlib with -O2 -floop-flatten -floop-strip-mine

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50561

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
         AssignedTo|unassigned at gcc dot       |rguenth at gcc dot gnu.org
                   |gnu.org                     |

--- Comment #5 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-01-09 
15:28:01 UTC ---
The asserts in

static inline ppl_dimension_type
psct_dynamic_dim (poly_bb_p pbb, graphite_dim_t level)
{
  graphite_dim_t result = 1 + 2 * level;

  gcc_assert (result < pbb_nb_scattering_transform (pbb));
  return result;
}

static inline ppl_dimension_type
psct_static_dim (poly_bb_p pbb, graphite_dim_t level)
{
  graphite_dim_t result = 2 * level;

  gcc_assert (result < pbb_nb_scattering_transform (pbb));
  return result;
}

are not consistent in case both a dynamic and static dimension should
always exist at the same time.  Changing psct_dynamic_dim to use <=
fixes the issue.