Do not split large constants, let define_split do it later if needed

From-SVN: r10662

gcc/config/rs6000/rs6000.md

@@ -4045,24 +4045,11 @@
 	operands[1] = change_address (operands[1], SImode,
 				      XEXP (operands[1], 0));
     }
-
-  if (GET_CODE (operands[1]) == CONST_INT
-      && (unsigned) (INTVAL (operands[1]) + 0x8000) >= 0x10000
-      && (INTVAL (operands[1]) & 0xffff) != 0)
-    {
-      emit_move_insn (operands[0],
-		      gen_rtx (CONST_INT, VOIDmode,
-			       INTVAL (operands[1]) & 0xffff0000));
-      emit_insn (gen_iorsi3 (operands[0], operands[0],
-			     gen_rtx (CONST_INT, VOIDmode,
-				      INTVAL (operands[1]) & 0xffff)));
-      DONE;
-    }
 }")
 
 (define_insn ""
-  [(set (match_operand:SI 0 "nonimmediate_operand" "=r,r,r,r,m,r,r,r,r,*q,*c*l,*h")
-	(match_operand:SI 1 "input_operand" "r,S,T,m,r,I,J,R,*h,r,r,0"))]
+  [(set (match_operand:SI 0 "nonimmediate_operand" "=r,r,r,r,m,r,r,r,r,r,*q,*c*l,*h")
+	(match_operand:SI 1 "input_operand"         "r,S,T,m,r,I,J,n,R,*h,r,r,0"))]
   "gpc_reg_operand (operands[0], SImode)
    || gpc_reg_operand (operands[1], SImode)"
   "@
@@ -4073,12 +4060,14 @@
    {st%U0%X0|stw%U0%X0} %1,%0
    {lil|li} %0,%1
    {liu|lis} %0,%u1
+   #
    {cal|la} %0,%1(%*)
    mf%1 %0
    mt%0 %1
    mt%0 %1
    cror 0,0,0"
-  [(set_attr "type" "*,load,load,load,*,*,*,*,*,*,mtjmpr,*")])
+  [(set_attr "type" "*,load,load,load,*,*,*,*,*,*,*,mtjmpr,*")
+   (set_attr "length" "4,4,4,4,4,4,4,8,4,4,4,4,4")])
 
 ;; Split a load of a large constant into the appropriate two-insn
 ;; sequence.