libvpx: Pull from upstream

source/libvpx/vpx_dsp/x86/sad4d_sse2.asm

 ;
 ;  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
 ;
 ;  Use of this source code is governed by a BSD-style license
 ;  that can be found in the LICENSE file in the root of the source
 ;  tree. An additional intellectual property rights grant can be found
 ;  in the file PATENTS.  All contributing project authors may
 ;  be found in the AUTHORS file in the root of the source tree.
 ;
 
+%define program_name vpx
+
 %include "third_party/x86inc/x86inc.asm"
 
 SECTION .text
 
 ; PROCESS_4x2x4 first, off_{first,second}_{src,ref}, advance_at_end
 %macro PROCESS_4x2x4 5-6 0
   movd                  m0, [srcq +%2]
 %if %1 == 1
   movd                  m6, [ref1q+%3]
   movd                  m4, [ref2q+%3]
@@ skipping 139 matching lines @@
   PROCESS_16x2x4 %1, %2, %3, %2 + 16, %3 + 16
   PROCESS_16x2x4  0, %4, %5, %4 + 16, %5 + 16, %6
 %endmacro
 
 ; PROCESS_64x2x4 first, off_{first,second}_{src,ref}, advance_at_end
 %macro PROCESS_64x2x4 5-6 0
   PROCESS_32x2x4 %1, %2, %3, %2 + 32, %3 + 32
   PROCESS_32x2x4  0, %4, %5, %4 + 32, %5 + 32, %6
 %endmacro
 
-; void vp9_sadNxNx4d_sse2(uint8_t *src,    int src_stride,
+; void vpx_sadNxNx4d_sse2(uint8_t *src,    int src_stride,
 ;                         uint8_t *ref[4], int ref_stride,
-;                         unsigned int res[4]);
+;                         uint32_t res[4]);
 ; where NxN = 64x64, 32x32, 16x16, 16x8, 8x16 or 8x8
 %macro SADNXN4D 2
 %if UNIX64
 cglobal sad%1x%2x4d, 5, 8, 8, src, src_stride, ref1, ref_stride, \
                               res, ref2, ref3, ref4
 %else
 cglobal sad%1x%2x4d, 4, 7, 8, src, src_stride, ref1, ref_stride, \
                               ref2, ref3, ref4
 %endif
   movsxdifnidn src_strideq, src_strided
@@ skipping 39 matching lines @@
 SADNXN4D 16, 32
 SADNXN4D 16, 16
 SADNXN4D 16,  8
 SADNXN4D  8, 16
 SADNXN4D  8,  8
 SADNXN4D  8,  4
 
 INIT_MMX sse
 SADNXN4D  4,  8
 SADNXN4D  4,  4