h8300.md (zero_extendqihi2): Changes to define_expand to accomodate target-specific attributes.

	* config/h8300/h8300.md (zero_extendqihi2): Changes to
	define_expand to accomodate target-specific attributes.
	(anonymous zero_extendqihi2 patterns): New.

From-SVN: r45290

gcc/ChangeLog

+2001-08-30  Kazu Hirata  <kazu@hxi.com>
+
+	* config/h8300/h8300.md (zero_extendqihi2): Changes to
+	define_expand to accomodate target-specific attributes.
+	(anonymous zero_extendqihi2 patterns): New.
+
 Thu Aug 30 18:10:56 2001  J"orn Rennecke <amylaar@redhat.com>
 
 	* h8300.md (*andorhi3): New pattern.

gcc/config/h8300/h8300.md

@@ -1604,16 +1604,32 @@
 ;; EXTEND INSTRUCTIONS
 ;; ----------------------------------------------------------------------
 
-(define_insn "zero_extendqihi2"
+(define_expand "zero_extendqihi2"
+  [(set (match_operand:HI 0 "register_operand" "")
+	(zero_extend:HI (match_operand:QI 1 "general_operand_src" "")))]
+  ""
+  "")
+
+(define_insn ""
   [(set (match_operand:HI 0 "register_operand" "=r,r")
 	(zero_extend:HI (match_operand:QI 1 "general_operand_src" "0,g>")))]
-  ""
+  "TARGET_H8300"
   "@
   mov.b	#0,%t0
   mov.b	%R1,%s0\;mov.b	#0,%t0"
   [(set_attr "length" "2,10")
    (set_attr "cc" "clobber,clobber")])
 
+(define_insn ""
+  [(set (match_operand:HI 0 "register_operand" "=r,r")
+	(zero_extend:HI (match_operand:QI 1 "general_operand_src" "0,g>")))]
+  "TARGET_H8300H || TARGET_H8300S"
+  "@
+  extu.w	%T0
+  mov.b	%R1,%s0\;extu.w	%T0"
+  [(set_attr "length" "2,10")
+   (set_attr "cc" "set_znv,set_znv")])
+
 ;; The compiler can synthesize a 300H variant of this which is
 ;; just as efficient as one that we'd create
 (define_insn "zero_extendqisi2"