h8300.h (CONST_OK_FOR_J): New.

	* config/h8300/h8300.h (CONST_OK_FOR_J): New.
	(CONST_OK_FOR_LETTER_P): Use CONST_OK_FOR_J.
	* config/h8300/h8300.md (*addhi_h8300): Add a new alternative.
	(*addhi_h8300hs): Likewise.

From-SVN: r60079

gcc/ChangeLog

+2002-12-12  Kazu Hirata  <kazu@cs.umass.edu>
+
+	* config/h8300/h8300.h (CONST_OK_FOR_J): New.
+	(CONST_OK_FOR_LETTER_P): Use CONST_OK_FOR_J.
+	* config/h8300/h8300.md (*addhi_h8300): Add a new alternative.
+	(*addhi_h8300hs): Likewise.
+
 Thu Dec 12 16:24:59 2002  J"orn Rennecke <joern.rennecke@superh.com>
 
 	* sh.c (reg_class_from_letter): No longer const.  Add 'e' entry.

gcc/config/h8300/h8300.h

@@ -461,6 +461,7 @@ enum reg_class {
    Return 1 if VALUE is in the range specified by C.  */
 
 #define CONST_OK_FOR_I(VALUE) ((VALUE) == 0)
+#define CONST_OK_FOR_J(VALUE) (((VALUE) & 0xff) == 0)
 #define CONST_OK_FOR_L(VALUE)				\
   (TARGET_H8300H || TARGET_H8300S			\
    ? (VALUE) == 1 || (VALUE) == 2 || (VALUE) == 4	\
@@ -472,6 +473,7 @@ enum reg_class {
 
 #define CONST_OK_FOR_LETTER_P(VALUE, C)		\
   ((C) == 'I' ? CONST_OK_FOR_I (VALUE) :	\
+   (C) == 'J' ? CONST_OK_FOR_J (VALUE) :	\
    (C) == 'L' ? CONST_OK_FOR_L (VALUE) :	\
    (C) == 'N' ? CONST_OK_FOR_N (VALUE) :	\
    0)

gcc/config/h8300/h8300.md

@@ -762,32 +762,34 @@
   ""
   "")
 
-(define_insn ""
-  [(set (match_operand:HI 0 "register_operand" "=r,r,r,r,&r")
-	(plus:HI (match_operand:HI 1 "register_operand" "%0,0,0,0,g")
-		 (match_operand:HI 2 "nonmemory_operand" "L,N,n,r,r")))]
+(define_insn "*addhi3_h8300"
+  [(set (match_operand:HI 0 "register_operand" "=r,r,r,r,r,&r")
+	(plus:HI (match_operand:HI 1 "register_operand" "%0,0,0,0,0,g")
+		 (match_operand:HI 2 "nonmemory_operand" "L,N,J,n,r,r")))]
   "TARGET_H8300"
   "@
    adds	%2,%T0
    subs	%G2,%T0
+   add.b	%t2,%t0
    add.b	%s2,%s0\;addx	%t2,%t0
    add.w	%T2,%T0
    mov.w	%T1,%T0\;add.w	%T2,%T0"
-  [(set_attr "length" "2,2,4,2,6")
-   (set_attr "cc" "none_0hit,none_0hit,clobber,set_zn,set_zn")])
+  [(set_attr "length" "2,2,2,4,2,6")
+   (set_attr "cc" "none_0hit,none_0hit,clobber,clobber,set_zn,set_zn")])
 
-(define_insn ""
-  [(set (match_operand:HI 0 "register_operand" "=r,r,r,r")
-	(plus:HI (match_operand:HI 1 "register_operand" "%0,0,0,0")
-		 (match_operand:HI 2 "nonmemory_operand" "L,N,n,r")))]
+(define_insn "*addhi3_h8300hs"
+  [(set (match_operand:HI 0 "register_operand" "=r,r,r,r,r")
+	(plus:HI (match_operand:HI 1 "register_operand" "%0,0,0,0,0")
+		 (match_operand:HI 2 "nonmemory_operand" "L,N,J,n,r")))]
   "TARGET_H8300H || TARGET_H8300S"
   "@
    adds	%2,%S0
    subs	%G2,%S0
+   add.b	%t2,%t0
    add.w	%T2,%T0
    add.w	%T2,%T0"
-  [(set_attr "length" "2,2,4,2")
-   (set_attr "cc" "none_0hit,none_0hit,set_zn,set_zn")])
+  [(set_attr "length" "2,2,2,4,2")
+   (set_attr "cc" "none_0hit,none_0hit,clobber,set_zn,set_zn")])
 
 (define_split
   [(set (match_operand:HI 0 "register_operand" "")