commit 384687676457d696fe1678bdf43fd1df660bef81
Author: unknown <jimeng@.apac.cisco.com>
Date:   Fri Mar 28 18:33:25 2008 +0800

    Add sfence after movntq

diff --git a/common/x86/mc-a2.asm b/common/x86/mc-a2.asm
index 229f5c9..787ee30 100644
--- a/common/x86/mc-a2.asm
+++ b/common/x86/mc-a2.asm
@@ -257,6 +257,7 @@ ALIGN 16
     dec         dword theight
     jg          .loopy
 
+    sfence
     mov         rsp,    rbp
 %ifdef ARCH_X86_64
     pop         r14
@@ -333,6 +334,7 @@ cglobal x264_plane_copy_mmxext, 6,7
     add    r0, r1
     dec    r5d
     jg     .loopy
+    sfence
     emms
     RET