pa.h (CONST_COSTS): Make CONST_DOUBLES very expensive.

	* pa.h (CONST_COSTS): Make CONST_DOUBLES very expensive.
	Give HIGH expressions a small cost with CONST, SYMBOL_REF,
	and LABEL_REF being twice as expensive as HIGH.

From-SVN: r3071

gcc/config/pa/pa.h

@@ -1382,12 +1382,14 @@ while (0)
   case CONST_INT:						\
     if (INTVAL (RTX) == 0) return 0;				\
     if (INT_14_BITS (RTX)) return 1;				\
+  case HIGH:							\
+    return 2;							\
   case CONST:							\
   case LABEL_REF:						\
   case SYMBOL_REF:						\
-    return 2;							\
+    return 4;							\
   case CONST_DOUBLE:						\
-    return 4;
+    return 8;
 
 #define ADDRESS_COST(RTX) \
   (GET_CODE (RTX) == REG ? 1 : hppa_address_cost (RTX))