c6x.md (attr "op_pattern"): New.

c6x.md (attr "op_pattern"): New.

	* config/c6x/c6x.md (attr "op_pattern"): New.
	(load_sdata_pic, mov<mode>_insn for QIHIM and SISFVM): Set it.
	* config/c6x/c6x-mult.md.in (mulhi3_VARIANT_, mulhisi3_insn_VARIANT_):
	Likewise.
	* config/c6x/c6x-mult.md: Regenerate.
	* config/c6x/c6x.c: Include "regrename.h".
	(unit_req_table): New typedef.
	(unit_reqs): Use it for the declaration.
	(unit_req_factor, get_unit_reqs, merge_unit_reqs, unit_req_imbalance,
	get_unit_operand_masks, try_rename_operands, reshuffle_units): New
	static functions.
	(count_unit_reqs): New arg reqs.  All callers changed.  Use
	get_unit_reqs, and don't merge here.
	(res_mii): New arg reqs.  All callers changed.  Rewrite to use a loop
	using unit_req_factor.
	(hwloop_optimize): Call reshuffle_units.  Call merge_unit_reqs after
	count_unit_reqs.
	(c6x_reorg): Add reg notes problem, and call df_analyze.
	* Makefile.in ($(out_object_file)): Depend on regrename.h.

From-SVN: r180296