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_sse2.S
+++ b/kernel/x86/axpy_sse2.S
@@ -698,6 +698,12 @@
 .L40:
 	movl	Y, YY
 	movl	M,  %eax
+//If incx==0 || incy==0, avoid unloop.
+	cmpl	$0, INCX
+	je  .L46
+	cmpl	$0, INCY
+	je  .L46
+
 	sarl	$3, %eax
 	jle	.L45
 	ALIGN_3