gcc/

	* config/aarch64/aarch64-protos.h (aarch64_expand_movmem): New.
	* config/aarch64/aarch64.c (aarch64_move_pointer): New.
	(aarch64_progress_pointer): Likewise.
	(aarch64_copy_one_part_and_move_pointers): Likewise.
	(aarch64_expand_movmen): Likewise.
	* config/aarch64/aarch64.h (MOVE_RATIO): Set low.
	* config/aarch64/aarch64.md (movmem<mode>): New.

gcc/testsuite/

	* gcc.dg/tree-ssa/pr42585.c: Skip for AArch64.
	* gcc.dg/tree-ssa/sra-12.c: Likewise.

From-SVN: r211314