From 500164d2363d678e4c44a45c8962ca4081e5b218 Mon Sep 17 00:00:00 2001 From: Marek Michalkiewicz <marekm@linux.org.pl> Date: Wed, 28 Mar 2001 19:11:28 +0200 Subject: [PATCH] libgcc.S (__mulhi3): Correct tests to exit the loop when multiplier or multiplicand is zero. * config/avr/libgcc.S (__mulhi3): Correct tests to exit the loop when multiplier or multiplicand is zero. From-SVN: r40933 --- gcc/ChangeLog | 5 +++++ gcc/config/avr/libgcc.S | 4 +++- 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 8c76b2e0c858..2b2ae64d548f 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2001-03-28 Marek Michalkiewicz <marekm@linux.org.pl> + + * config/avr/libgcc.S (__mulhi3): Correct tests to exit the loop + when multiplier or multiplicand is zero. + 2001-03-28 Bernd Schmidt <bernds@redhat.com> * cselib.c (hash_rtx): Don't do tail recursion elimination by hand. diff --git a/gcc/config/avr/libgcc.S b/gcc/config/avr/libgcc.S index cdf2c3f4ee1f..b438954b757f 100644 --- a/gcc/config/avr/libgcc.S +++ b/gcc/config/avr/libgcc.S @@ -137,11 +137,13 @@ __mulhi3_skip1: add r_arg2L,r_arg2L ; shift multiplicand adc r_arg2H,r_arg2H - cpc r_arg2L,__zero_reg__ + cp r_arg2L,__zero_reg__ + cpc r_arg2H,__zero_reg__ breq __mulhi3_exit ; while multiplicand != 0 lsr r_arg1H ; gets LSB of multiplier ror r_arg1L + cp r_arg1L,__zero_reg__ cpc r_arg1H,__zero_reg__ brne __mulhi3_loop ; exit if multiplier = 0 __mulhi3_exit: -- GitLab