RISC-V: Remove duplicate `order_operator' predicate

Remove our RISC-V-specific `order_operator' predicate, which is exactly
the same as generic `ordered_comparison_operator' one.

	gcc/
	* config/riscv/predicates.md (order_operator): Remove predicate.
	* config/riscv/riscv.cc (riscv_rtx_costs): Update accordingly.
	* config/riscv/riscv.md (*branch<mode>, *mov<GPR:mode><X:mode>cc)
	(cstore<mode>4): Likewise.

gcc/config/riscv/predicates.md

@@ -339,9 +339,6 @@
 (define_predicate "equality_operator"
   (match_code "eq,ne"))
 
-(define_predicate "order_operator"
-  (match_code "eq,ne,lt,ltu,le,leu,ge,geu,gt,gtu"))
-
 (define_predicate "signed_order_operator"
   (match_code "eq,ne,lt,le,ge,gt"))
 

gcc/config/riscv/riscv.cc

@@ -2943,7 +2943,7 @@ riscv_rtx_costs (rtx x, machine_mode mode, int outer_code, int opno ATTRIBUTE_UN
 	      *total = COSTS_N_INSNS (SINGLE_SHIFT_COST + 1);
 	      return true;
 	    }
-	  if (order_operator (XEXP (x, 0), mode))
+	  if (ordered_comparison_operator (XEXP (x, 0), mode))
 	    {
 	      *total = COSTS_N_INSNS (1);
 	      return true;

gcc/config/riscv/riscv.md

@@ -2640,7 +2640,7 @@
 (define_insn "*branch<mode>"
   [(set (pc)
 	(if_then_else
-	 (match_operator 1 "order_operator"
+	 (match_operator 1 "ordered_comparison_operator"
 			 [(match_operand:X 2 "register_operand" "r")
 			  (match_operand:X 3 "reg_or_0_operand" "rJ")])
 	 (label_ref (match_operand 0 "" ""))
@@ -2716,7 +2716,7 @@
 (define_insn "*mov<GPR:mode><X:mode>cc"
   [(set (match_operand:GPR 0 "register_operand" "=r,r")
 	(if_then_else:GPR
-	 (match_operator 5 "order_operator"
+	 (match_operator 5 "ordered_comparison_operator"
 		[(match_operand:X 1 "register_operand" "r,r")
 		 (match_operand:X 2 "reg_or_0_operand" "rJ,rJ")])
 	 (match_operand:GPR 3 "register_operand" "0,0")
@@ -2902,7 +2902,7 @@
 
 (define_expand "cstore<mode>4"
   [(set (match_operand:SI 0 "register_operand")
-	(match_operator:SI 1 "order_operator"
+	(match_operator:SI 1 "ordered_comparison_operator"
 	    [(match_operand:GPR 2 "register_operand")
 	     (match_operand:GPR 3 "nonmemory_operand")]))]
   ""