* config/avr/libgcc.S (__mulhi3): Optimize previous change.

From-SVN: r40976

* config/avr/libgcc.S (__mulhi3): Optimize previous change.
From-SVN: r40976
7656d28a · Marek Michalkiewicz · Marek Michalkiewicz · 59350e50 · 7656d28a · 7656d28a
Commit 7656d28a authored Mar 31, 2001 by Marek Michalkiewicz Committed by Marek Michalkiewicz Mar 31, 2001
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gcc/ChangeLog
+4 -0

gcc/config/avr/libgcc.S
+1 -2

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--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
+2001-03-31  Marek Michalkiewicz  <marekm@linux.org.pl>
+
+	* config/avr/libgcc.S (__mulhi3): Optimize previous change.
+
 2001-03-30  Bernd Schmidt  <bernds@redhat.com>

 	* loop.c (load_mems): When generating a load from a pseudo, update

--- a/gcc/config/avr/libgcc.S
+++ b/gcc/config/avr/libgcc.S
@@ -143,8 +143,7 @@ __mulhi3_skip1:

 	lsr	r_arg1H		; gets LSB of multiplier
 	ror	r_arg1L
-	cp	r_arg1L,__zero_reg__
-	cpc	r_arg1H,__zero_reg__
+	sbiw	r_arg1L,0
 	brne	__mulhi3_loop	; exit if multiplier = 0
 __mulhi3_exit:
 	mov	r_arg1H,r_resH	; result to return register