Revert LRA SPARC changes for now.

Revert LRA SPARC changes for now.

gcc/

	PR/67622
	Revert:
	2015-09-11  David S. Miller  <davem@davemloft.net>

		* config/sparc/constraints.md: Make "U" constraint a real register
		constraint.
		* config/sparc/sparc.c (TARGET_LRA_P): Define.
		(D_MODES, DF_MODES): Add missing cast.
		(TF_MODES, TF_MODES_NO_S): Include T_MODE.
		(OF_MODES, OF_MODES_NO_S): Include O_MODE.
		(sparc_register_move_cost): Decrease Niagara/UltrsSPARC memory
		cost to 8.
		* config/sparc/sparc.h (PROMOTE_MODE): Define.
		* config/sparc/sparc.md (*movsi_lo_sum, *movsi_high): Do not
		provide these insn when flag_pic.

	2015-09-17  David S. Miller  <davem@davemloft.net>

		* config/sparc/sparc-protos.h (sparc_secondary_memory_needed):
		Declare.
		* config/sparc/sparc.c (sparc_secondary_memory_needed): New
		function.
		* config/sparc/sparc.h (SECONDARY_MEMORY_NEEDED): Use it.
		(HARD_REGNO_CALLER_SAVE_MODE): Define.
		* config/sparc/sparc.md (sethi_di_medlow, losum_di_medlow, seth44)
		(setm44, setl44, sethh, setlm, sethm, setlo, embmedany_sethi)
		(embmedany_losum, embmedany_brsum, embmedany_textuhi)
		(embmedany_texthi, embmedany_textulo, embmedany_textlo): Do not
		provide when flag_pic.

From-SVN: r227993