re PR target/50449 ([avr] Loading some 32-bit constants not optimal)

re PR target/50449 ([avr] Loading some 32-bit constants not optimal)

	PR target/50449
	PR target/50465
	* config/avr/avr.md (adjust_len): New insn attribute.
	(*reload_insi, *reload_insf): Use it.
	(*movsi, *movsf): Use new interface of output_movsisf.
	* config/avr/avr-protos.h (output_movsisf): Change prototype.
	* config/avr/avr.c (output_movsisf): Ditto.
	(adjust_insn_length): Use insn attribute "adjust_len" to adjust
	lengths of insns *reload_insi, *reload_insf.
	(output_reload_insisf_1): New static function.
	(output_reload_insisf): Use it.

From-SVN: r179037