Fixed #7. Modified axpy kernel codes to avoid unloop with incx==0 or incy==0 in x86 32bits arch.

2011-02-23 20:08:34 +08:00
parent cd2cbabecc
commit 12214e1d0f
4 changed files with 61 additions and 0 deletions
--- a/kernel/x86/axpy_sse.S
+++ b/kernel/x86/axpy_sse.S
@@ -1440,6 +1440,12 @@
 .L50:
 	movl	M, %eax
 	movl	Y, YY
+//If incx==0 || incy==0, avoid unloop.
+	cmpl	$0, INCX
+	je  .L56
+	cmpl	$0, INCY
+	je  .L56
+
 	sarl	$3,   %eax
 	jle	.L55
 	ALIGN_3