config/spu/spu.c: Use rtx_insn

config/spu/spu.c: Use rtx_insn

gcc/
	* config/spu/spu.c (frame_emit_store): Strengthen return type from
	rtx to rtx_insn *.
	(frame_emit_load): Likewise.
	(frame_emit_add_imm): Likewise, also for local "insn".
	(spu_expand_prologue): Likewise for local "insn".
	(struct spu_bb_info): Likewise for field "prop_jump".
	(emit_nop_for_insn): Likewise for param "insn" and local
	"new_insn".
	(pad_bb): Likewise for locals "insn", "next_insn", "prev_insn",
	"hbr_insn".
	(spu_emit_branch_hint): Likewise for params "before", "branch" and
	locals "hint", "insn".
	(get_branch_target): Likewise for param "branch".
	(insn_clobbers_hbr): Likewise for param "insn".
	(insert_hbrp_for_ilb_runout): Likewise for param "first" and
	locals "insn", "before_4", "before_16".
	(insert_hbrp): Likewise for local "insn".
	(spu_machine_dependent_reorg): Likewise for locals "branch",
	"insn", "next", "bbend".
	(uses_ls_unit): Likewise for param "insn".
	(get_pipe): Likewise.
	(spu_sched_variable_issue): Rename param "insn" to "uncast_insn",
	introducing a checked cast.
	(spu_sched_adjust_cost): Likewise for params "insn" and
	"dep_insn".
	(ea_load_store_inline): Strengthen local "insn" from rtx to rtx_insn *.
	(spu_sms_res_mii): Likewise.

From-SVN: r214463