2013-08-26  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/58146
	* array.c (gfc_ref_dimen_size):  If possible, use
	gfc_dep_difference to calculate array refrence
	sizes.  Fall back to integer code otherwise.
	* dependency.c (discard_nops).  Move up.
	Also discarde widening integer conversions.
	(gfc_dep_compare_expr):  Use discard_nops.

2013-08-26  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/58146
	* gfortran.dg/bounds_check_18.f90:  New test.

From-SVN: r201981