h8300.md (a peephole2): Don't handle 65535.

	* config/h8300/h8300.md (a peephole2): Don't handle 65535.
	(two peephole2): New.

From-SVN: r62764

gcc/ChangeLog

 2003-02-12  Kazu Hirata  <kazu@cs.umass.edu>
 
+	* config/h8300/h8300.md (a peephole2): Don't handle 65535.
+	(two peephole2): New.
+
+2003-02-12  Kazu Hirata  <kazu@cs.umass.edu>
+
 	* config/h8300/h8300.md (several peephole2): Replace
 	find_regno_note with peep2_reg_dead_p.
 

gcc/config/h8300/h8300.md

@@ -3500,8 +3500,7 @@
        || INTVAL (operands[1]) == 31
        || INTVAL (operands[1]) == 63
        || INTVAL (operands[1]) == 127
-       || INTVAL (operands[1]) == 255
-       || INTVAL (operands[1]) == 65535)"
+       || INTVAL (operands[1]) == 255)"
   [(set (match_dup 0)
 	(and:SI (match_dup 0)
 		(match_dup 5)))
@@ -3516,6 +3515,52 @@
 		  gen_rtx_EQ (VOIDmode, cc0_rtx, const0_rtx));
    operands[5] = GEN_INT (~INTVAL (operands[1]));")
 
+;; Transform A <= 255 to (A & 0xff00) == 0.
+
+(define_peephole2
+  [(set (cc0)
+	(compare:HI (match_operand:HI 0 "register_operand" "")
+		    (const_int 255)))
+   (set (pc)
+	(if_then_else (match_operator 1 "gtuleu_operator"
+			[(cc0) (const_int 0)])
+		      (label_ref (match_operand 2 "" ""))
+		      (pc)))]
+  "TARGET_H8300H || TARGET_H8300S"
+  [(set (cc0)
+	(and:HI (match_dup 0)
+		(const_int -256)))
+   (set (pc)
+	(if_then_else (match_dup 4)
+		      (label_ref (match_dup 2))
+		      (pc)))]
+  "operands[4] = ((GET_CODE (operands[1]) == GTU) ?
+		  gen_rtx_NE (VOIDmode, cc0_rtx, const0_rtx) :
+		  gen_rtx_EQ (VOIDmode, cc0_rtx, const0_rtx));")
+
+;; Transform A <= 65535 to (A & 0xffff0000) == 0.
+
+(define_peephole2
+  [(set (cc0)
+	(compare:SI (match_operand:SI 0 "register_operand" "")
+		    (const_int 65535)))
+   (set (pc)
+	(if_then_else (match_operator 1 "gtuleu_operator"
+			[(cc0) (const_int 0)])
+		      (label_ref (match_operand 2 "" ""))
+		      (pc)))]
+  "TARGET_H8300H || TARGET_H8300S"
+  [(set (cc0)
+	(and:SI (match_dup 0)
+		(const_int -65536)))
+   (set (pc)
+	(if_then_else (match_dup 4)
+		      (label_ref (match_dup 2))
+		      (pc)))]
+  "operands[4] = ((GET_CODE (operands[1]) == GTU) ?
+		  gen_rtx_NE (VOIDmode, cc0_rtx, const0_rtx) :
+		  gen_rtx_EQ (VOIDmode, cc0_rtx, const0_rtx));")
+
 ;; Narrow the mode of testing if possible.
 
 (define_peephole2