arc.c (get_arc_condition_code): Use gcc_assert & gcc_unreachable as appropriate.

arc.c (get_arc_condition_code): Use gcc_assert & gcc_unreachable as appropriate.

	* config/arc/arc.c (get_arc_condition_code): Use gcc_assert &
	gcc_unreachable as appropriate.
	(arc_double_limm_p, arc_setup_incoming_varargs,
	arc_compute_function_type, arc_output_function_prologue,
	arc_output_function_epilogue, arc_eligible_for_epilogue_delay,
	output_shift, arc_print_operand, arc_print_operand_address,
	arc_final_prescan_insn): Likewise.
	* config/arc/arc.md (*movdi_insn, *movdf_insn): Likewise.

From-SVN: r99264