[Patch 7/7] Remove *_BY_PIECES_P

[Patch 7/7] Remove *_BY_PIECES_P

gcc/

	* doc/tm.texi.in (MOVE_BY_PIECES_P): Remove.
	(CLEAR_BY_PIECES_P): Likewise.
	(SET_BY_PIECES_P): Likewise.
	(STORE_BY_PIECES_P): Likewise.
	* doc/tm.texi: Regenerate.
	* system.h: Poison MOVE_BY_PIECES_P, CLEAR_BY_PIECES_P,
	SET_BY_PIECES_P, STORE_BY_PIECES_P.
	* expr.c (MOVE_BY_PIECES_P): Remove.
	(CLEAR_BY_PIECES_P): Likewise.
	(SET_BY_PIECES_P): Likewise.
	(STORE_BY_PIECES_P): Likewise.
	(can_move_by_pieces): Rewrite in terms of
	targetm.use_by_pieces_infrastructure_p.
	(emit_block_move_hints): Likewise.
	(can_store_by_pieces): Likewise.
	(store_by_pieces): Likewise.
	(clear_storage_hints): Likewise.
	(emit_push_insn): Likewise.
	(expand_constructor): Likewise.

From-SVN: r217004