re PR fortran/52846 ([F2008] Support submodules)

re PR fortran/52846 ([F2008] Support submodules)

2015-08-05  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/52846
	* module.c (check_access): Return true if new static flag
	'dump_smod' is true..
	(gfc_dump_module): Rename original 'dump_module' and call from
	new version. Use 'dump_smod' rather than the stack state to
	determine if a submodule is being processed. The new version of
	this procedure sets 'dump_smod' depending on the stack state and
	then writes both the mod and smod files if a module is being
	processed or just the smod for a submodule.
	(gfc_use_module): Eliminate the check for module_name and
	submodule_name being the same.
	* trans-decl.c (gfc_finish_var_decl, gfc_build_qualified_array,
	get_proc_pointer_decl): Set TREE_PUBLIC unconditionally and use
	the conditions to set DECL_VISIBILITY as hidden and to set as
	true DECL_VISIBILITY_SPECIFIED.

2015-08-05  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/52846

	* lib/fortran-modules.exp: Call cleanup-submodules from
	cleanup-modules.
	* gfortran.dg/public_private_module_2.f90: Add two XFAILS to
	cover the cases where private entities are no longer optimized
	away.
	* gfortran.dg/public_private_module_6.f90: Add an XFAIL for the
	same reason.
	* gfortran.dg/submodule_1.f08: Change cleanup module names.
	* gfortran.dg/submodule_5.f08: The same.
	* gfortran.dg/submodule_9.f08: The same.
	* gfortran.dg/submodule_10.f08: New test

From-SVN: r226622