fnspec: constify methods [PR97894]

Since these methods don't write to the this, let's mark them as const methods
saying this is not written to.
This warning is from cppcheck and added the other methods as I noticed too.

Bootstrapped and tested on x86_64-linux-gnu.

	PR middle-end/97894
gcc/ChangeLog:

	* attr-fnspec.h (attr_fnspec): arg_idx, known_p, arg_specified_p,
	arg_direct_p,  arg_used_p, arg_readonly_p,
	arg_maybe_read_p, arg_maybe_written_p,
	arg_max_access_size_given_by_arg_p,
	arg_access_size_given_by_type_p,
	arg_copied_to_arg_p, arg_noescape_p, returns_arg,
	returns_noalias_p, global_memory_read_p,
	global_memory_written_p, errno_maybe_written_p, arg_eaf_flags,
	and get_str as const methods.

Signed-off-by: Andrew Pinski <andrew.pinski@oss.qualcomm.com>

0 files changed, 0 insertions, 0 deletions