* config/h8300/h8300.md (a new peephole2): New.

From-SVN: r63892

gcc/ChangeLog

+2003-03-06  Kazu Hirata  <kazu@cs.umass.edu>
+
+	* config/h8300/h8300.md (a new peephole2): New.
+
 Thu Mar  6 14:20:15 CET 2003  Jan Hubicka  <jh@suse.cz>
 
 	* cgraph.c (cgraph_node): Do not confuse nested functions and methods.

gcc/config/h8300/h8300.md

@@ -3584,6 +3584,25 @@
   "operands[2] = gen_lowpart (QImode, operands[0]);
    operands[3] = gen_lowpart (QImode, operands[1]);")
 
+(define_peephole2
+  [(set (match_operand:SI 0 "register_operand" "")
+	(match_operand:SI 1 "memory_operand" ""))
+   (set (match_dup 0)
+	(and:SI (match_dup 0)
+		(match_operand:SI 2 "const_int_operand" "")))]
+  "(TARGET_H8300H || TARGET_H8300S)
+   && !reg_overlap_mentioned_p (operands[0], operands[1])
+   && !(GET_CODE (operands[1]) == MEM && MEM_VOLATILE_P (operands[1]))
+   && (INTVAL (operands[2]) & ~0xffff) == 0
+   && INTVAL (operands[2]) != 255"
+  [(set (match_dup 3)
+	(match_dup 4))
+   (set (match_dup 0)
+	(and:SI (match_dup 0)
+		(match_dup 2)))]
+  "operands[3] = gen_lowpart (HImode, operands[0]);
+   operands[4] = gen_lowpart (HImode, operands[1]);")
+
 ;; (compare (reg:SI) (const_int)) takes 6 bytes, so we try to achieve
 ;; the equivalent with shorter sequences.  Here is the summary.  Cases
 ;; are grouped for each define_peephole2.