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* config/avr/libgcc.S (__mulhi3): Optimize previous change.
authorMarek Michalkiewicz <marekm@linux.org.pl>
Sat, 31 Mar 2001 16:24:16 +0000 (18:24 +0200)
committerMarek Michalkiewicz <marekm@gcc.gnu.org>
Sat, 31 Mar 2001 16:24:16 +0000 (16:24 +0000)
From-SVN: r40976

gcc/ChangeLog patch | blob | history
gcc/config/avr/libgcc.S patch | blob | history

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 7f0266b425fa55df602bccc4248ba43875ea7fbc..875ed0a3e65bcfb11f042350bc1437e21de32b3d 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+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
diff --git a/gcc/config/avr/libgcc.S b/gcc/config/avr/libgcc.S
index b438954b757f61db921c4a29ee5f0793e2fb17d3..d324a2166a61e8918cc18b857ebda7b0eb249abf 100644 (file)
--- 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