PR target/16884
	* config/avr/avr.md ("movmemhi"): Substitute match_dup to
	match_scratch.
	(*movmemqi_insn): Likewise.
	(*movmemhi): Likewise.
	(clrmemhi): Likewise.
	(*clrmemqi): Likewise.
	(*clrmemhi): Likewise.

From-SVN: r86970