counter jump better

2016-02-25 18:10:33 +03:00 · 2016-02-25 18:10:33 +03:00 · 5d22ad3fc8
commit 5d22ad3fc8
parent 864e754074
1 changed files with 3 additions and 2 deletions
--- a/util/src/uint.rs
+++ b/util/src/uint.rs
@ -222,8 +222,7 @@ macro_rules! uint_overflowing_mul {
 				adc $$0, %rdx
 				or %rdx, %rcx

-				cmpq $$0, %rcx
-				jne 2f
+				jrcxz 2f

 				mov $8, %rax
 				cmpq $$0, %rax
@ -234,6 +233,8 @@ macro_rules! uint_overflowing_mul {
 				sete %dl
 				or %dl, %cl

+				jrcxz 2f
+
 				mov $3, %rax
 				cmpq $$0, %rax
 				sete %dl