re PR fortran/48405 (Handle expressions in DO loops for front-end optimization)

re PR fortran/48405 (Handle expressions in DO loops for front-end optimization)

2011-04-21  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/48405
	* frontend_passes (cfe_register_funcs): Remove workaround for DO
	loops.
	(gfc_code_walker):  Make sure the pointer to the current
	statement doen't change when other statements are inserted.

2011-04-21  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/48405
	* gfortran.dg/function_optimize_6.f90:  New test.

From-SVN: r172838