PR debug/63239 Add DWARF representation for C++11 deleted member function.

PR debug/63239 Add DWARF representation for C++11 deleted member function.

include/ChangeLog

	* dwarf2.def (DW_AT_GNU_deleted): New attribute.

gcc/ChangeLog

	* dwarf2out.c (gen_subprogram_die): When a member function is
	explicitly deleted then add a DW_AT_GNU_deleted attribute.
	* langhooks.h (struct lang_hooks_for_decls): Add
	function_decl_deleted_p langhook.
	* langhooks-def.h (LANG_HOOKS_FUNCTION_DECL_DELETED_P): Define.
	(LANG_HOOKS_DECLS): Add LANG_HOOKS_FUNCTION_DECL_DELETED_P.

gcc/cp/ChangeLog

	* cp-objcp-common.h (LANG_HOOKS_FUNCTION_DECL_DELETED_P): Define.
	(cp_function_decl_deleted_p): New prototype.
	* cp-objcp-common.c (cp_function_deleted_p): New function.

gcc/testsuite/ChangeLog

	* g++.dg/debug/dwarf2/deleted-member-function.C: New testcase.

From-SVN: r215901