Description: Ensure that vectorized sgemv does not use uninitialized data
Origin: upstream, https://github.com/xianyi/OpenBLAS/commit/91ed4e4450ceabd71493e0bf80e7455df414bebf
Bug: https://github.com/xianyi/OpenBLAS/issues/171
Bug-Debian: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=696000
Last-Update: 2013-01-04
---
This patch header follows DEP-3: http://dep.debian.net/deps/dep3/
--- a/kernel/x86/gemv_t_sse.S
+++ b/kernel/x86/gemv_t_sse.S
@@ -198,6 +198,20 @@
 	jg	.L06
 	ALIGN_4
 
+//Padding zero to prevent loading the dirty number from buffer.
+	movl	M,  I
+	movl	$8, J
+	andl	$7, I
+	xorps	%xmm0, %xmm0
+	subl	I, J
+	ALIGN_2
+.L07:
+	movss	%xmm0, 0 * SIZE(Y1)
+	addl	$SIZE, Y1
+	decl	J
+	jg	.L07
+	ALIGN_4
+
 .L10:
 	movl	Y, Y1