From 69dad87c4867135ae7221b3fd872f91df8d96e5c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?M=C3=A5ns=20Rullg=C3=A5rd?= <mans@mansr.com>
Date: Wed, 25 Aug 2010 15:41:11 +0000
Subject: [PATCH] VP6: fix vp6_filter_diag4_mmx/sse on 64-bit
The stride can be negative and must be sign extended before being
used in pointer arithmetic.
Originally committed as revision 24926 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
libavcodec/x86/vp56dsp.asm | 3 +++
1 file changed, 3 insertions(+)
diff --git a/libavcodec/x86/vp56dsp.asm b/libavcodec/x86/vp56dsp.asm
index 217e63a0780..1b3165e54ae 100644
--- a/libavcodec/x86/vp56dsp.asm
+++ b/libavcodec/x86/vp56dsp.asm
@@ -127,6 +127,9 @@ cglobal vp6_filter_diag4_%1, 5, 7, %2
sub rsp, 8*15
movq m6, [pw_64]
%endif
+%ifdef ARCH_X86_64
+ movsxd r2, r2d
+%endif
sub r1, r2
--
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