gcc/

	* config/s390/s390.c (s390_use_by_pieces_infrastructure_p): New.
	(TARGET_USE_BY_PIECES_INFRASTRUCTURE_P): Likewise.
	* config/s390/s390.h (MOVE_BY_PIECES_P): Remove.
	(CLEAR_BY_PIECES): Likewise.
	(SET_BY_PIECES): Likewise.
	(STORE_BY_PIECES): Likewise.

From-SVN: r216998