* gcc-interface/ada-tree.h (SET_TYPE_RM_VALUE): Mark the expression
	as visited.
	* gcc-interface/misc.c (gnat_get_subrange_bounds): Always return the
	bounds.
	* gcc-interface/trans.c (add_decl_expr): Do not mark gigi-specific
	fields.
	(gnat_gimplify_expr) <DECL_EXPR>: New case.

From-SVN: r150963