* config/sparc/sparc-protos.h (sparc_branch_cost): Declare.
	* config/sparc/sparc.h (BRANCH_COST): Call sparc_branch_cost.
	* config/sparc/sparc.c (struct processor_costs): Add branch_cost field.
	(cypress_costs): Set it.
	(supersparc_costs): Likewise.
	(hypersparc_costs): Likewise.
	(leon_cost): Likewise.
	(leon3_costs): Likewise.
	(sparclet_costs): Likewise.
	(ultrasparc_costs): Likewise.
	(ultrasparc_costs): Likewise.
	(niagara_costs): Likewise.
	(niagara2_costs): Likewise.
	(niagara3_costs): Likewise.
	(niagara4_costs): Likewise.
	(niagara7_costs): Likewise.
	(m8_costs): Likewise.
	(TARGET_CAN_FOLLOW_JUMP): Define.
	(pass_work_around_errata::gate): Minor tweak.
	(sparc_option_override): Remove MASK_FSMULD mask for V7 processors.
	Do not set both MASK_VIS4 and MASK_VIS4B for M8 processor.
	Automaitcally clear MASK_FSMULD mask for V7 processors.
	(sparc_can_follow_jump): New static function.
	(output_ubranch): Deal with CROSSING_JUMP_P.
	(sparc_use_sched_lookahead): Rewrite using switch statement.
	(sparc_issue_rate): Reorder.
	(sparc_branch_cost): New function.

From-SVN: r264687