fixed a bug in drot whe incx or incy equals to zero.

2011-02-16 00:18:45 +08:00 · 2011-02-16 00:18:45 +08:00 · b8b27bec5c
parent 376677452f
commit b8b27bec5c
1 changed files with 4 additions and 0 deletions
--- a/kernel/x86_64/rot_sse2.S
+++ b/kernel/x86_64/rot_sse2.S
@ -887,6 +887,10 @@

 .L50:
 	movq	N,  %rax
+	cmpq	$0, INCX
+	je  .L56
+	cmpq	$0, INCY
+	je  .L56
 	sarq	$2, %rax
 	jle	.L55
 	ALIGN_3