visium-protos.h (split_double_move): Rename into...

	* config/visium/visium-protos.h (split_double_move): Rename into...
	(visium_split_double_move): ...this.
	(visium_split_double_add): Declare.
	* config/visium/visium.c (split_double_move): Rename into...
	(visium_split_double_move): ...this.
	(visium_split_double_add): New function.
	(visium_expand_copysign): Renumber operands for consistency.
	* config/visium/visium.md (DImode move splitter): Adjust to renaming.
	(DFmode move splitter): Likewise.
	(*addi3_insn): Split by means of visium_split_double_add.
	(*adddi3_insn_flags): Delete.
	(*plus_plus_sltu<subst_arith>): New insn.
	(*subdi3_insn): Split by means of visium_split_double_add.
	(subdi3_insn_flags): Delete.
	(*minus_minus_sltu<subst_arith>): New insn.
	(*negdi2_insn): Split by means of visium_split_double_add.
	(*negdi2_insn_flags): Delete.

From-SVN: r236827