libvpx: Pull from upstream

source/libvpx/vp9/common/x86/vp9_sadmxn_x86.c

-/*
- *  Copyright (c) 2012 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.
- */
-
-#include <emmintrin.h>  // SSE2
-#include "./vpx_config.h"
-#include "./vp9_rtcd.h"
-#include "vpx/vpx_integer.h"
-#include "vpx_ports/emmintrin_compat.h"
-
-#if HAVE_SSE2
-unsigned int vp9_sad16x3_sse2(
-  const unsigned char *src_ptr,
-  int  src_stride,
-  const unsigned char *ref_ptr,
-  int  ref_stride) {
-  __m128i s0, s1, s2;
-  __m128i r0, r1, r2;
-  __m128i sad;
-
-  s0 = _mm_loadu_si128((const __m128i *)(src_ptr + 0 * src_stride));
-  s1 = _mm_loadu_si128((const __m128i *)(src_ptr + 1 * src_stride));
-  s2 = _mm_loadu_si128((const __m128i *)(src_ptr + 2 * src_stride));
-
-  r0 = _mm_loadu_si128((const __m128i *)(ref_ptr + 0 * ref_stride));
-  r1 = _mm_loadu_si128((const __m128i *)(ref_ptr + 1 * ref_stride));
-  r2 = _mm_loadu_si128((const __m128i *)(ref_ptr + 2 * ref_stride));
-
-  sad = _mm_sad_epu8(s0, r0);
-  sad = _mm_add_epi16(sad,  _mm_sad_epu8(s1, r1));
-  sad = _mm_add_epi16(sad,  _mm_sad_epu8(s2, r2));
-  sad = _mm_add_epi16(sad,  _mm_srli_si128(sad, 8));
-
-  return _mm_cvtsi128_si32(sad);
-}
-
-unsigned int vp9_sad3x16_sse2(
-  const unsigned char *src_ptr,
-  int  src_stride,
-  const unsigned char *ref_ptr,
-  int  ref_stride) {
-  int r;
-  __m128i s0, s1, s2, s3;
-  __m128i r0, r1, r2, r3;
-  __m128i sad = _mm_setzero_si128();
-  __m128i mask;
-  const int offset = (uintptr_t)src_ptr & 3;
-
-  /* In current use case, the offset is 1 if CONFIG_SUBPELREFMV is off.
-   * Here, for offset=1, we adjust src_ptr to be 4-byte aligned. Then, movd
-   * takes much less time.
-   */
-  if (offset == 1)
-    src_ptr -= 1;
-
-  /* mask = 0xffffffffffff0000ffffffffffff0000 */
-  mask = _mm_cmpeq_epi32(sad, sad);
-  mask = _mm_slli_epi64(mask, 16);
-
-  for (r = 0; r < 16; r += 4) {
-    s0 = _mm_cvtsi32_si128 (*(const int *)(src_ptr + 0 * src_stride));
-    s1 = _mm_cvtsi32_si128 (*(const int *)(src_ptr + 1 * src_stride));
-    s2 = _mm_cvtsi32_si128 (*(const int *)(src_ptr + 2 * src_stride));
-    s3 = _mm_cvtsi32_si128 (*(const int *)(src_ptr + 3 * src_stride));
-    r0 = _mm_cvtsi32_si128 (*(const int *)(ref_ptr + 0 * ref_stride));
-    r1 = _mm_cvtsi32_si128 (*(const int *)(ref_ptr + 1 * ref_stride));
-    r2 = _mm_cvtsi32_si128 (*(const int *)(ref_ptr + 2 * ref_stride));
-    r3 = _mm_cvtsi32_si128 (*(const int *)(ref_ptr + 3 * ref_stride));
-
-    s0 = _mm_unpacklo_epi8(s0, s1);
-    r0 = _mm_unpacklo_epi8(r0, r1);
-    s2 = _mm_unpacklo_epi8(s2, s3);
-    r2 = _mm_unpacklo_epi8(r2, r3);
-    s0 = _mm_unpacklo_epi64(s0, s2);
-    r0 = _mm_unpacklo_epi64(r0, r2);
-
-    // throw out extra byte
-    if (offset == 1)
-      s0 = _mm_and_si128(s0, mask);
-    else
-      s0 = _mm_slli_epi64(s0, 16);
-    r0 = _mm_slli_epi64(r0, 16);
-
-    sad = _mm_add_epi16(sad, _mm_sad_epu8(s0, r0));
-
-    src_ptr += src_stride*4;
-    ref_ptr += ref_stride*4;
-  }
-
-  sad = _mm_add_epi16(sad,  _mm_srli_si128(sad, 8));
-  return _mm_cvtsi128_si32(sad);
-}
-
-#endif