libvpx: Pull from upstream

source/libvpx/vp9/encoder/x86/vp9_avg_intrin_sse2.c

Index: source/libvpx/vp9/encoder/x86/vp9_avg_intrin_sse2.c
diff --git a/source/libvpx/vp9/encoder/x86/vp9_avg_intrin_sse2.c b/source/libvpx/vp9/encoder/x86/vp9_avg_intrin_sse2.c
index 4c3495b056033380e5c99f27914b6f4e36362abb..0a105629f067478a5754101879b38364e07af345 100644
--- a/source/libvpx/vp9/encoder/x86/vp9_avg_intrin_sse2.c
+++ b/source/libvpx/vp9/encoder/x86/vp9_avg_intrin_sse2.c
@@ -56,3 +56,117 @@ unsigned int vp9_avg_4x4_sse2(const uint8_t *s, int p) {
   avg = _mm_extract_epi16(s0, 0);
   return (avg + 8) >> 4;
 }
+
+void vp9_int_pro_row_sse2(int16_t *hbuf, uint8_t const*ref,
+                          const int ref_stride, const int height) {
+  int idx;
+  __m128i zero = _mm_setzero_si128();
+  __m128i src_line = _mm_load_si128((const __m128i *)ref);
+  __m128i s0 = _mm_unpacklo_epi8(src_line, zero);
+  __m128i s1 = _mm_unpackhi_epi8(src_line, zero);
+  __m128i t0, t1;
+  int height_1 = height - 1;
+  ref += ref_stride;
+
+  for (idx = 1; idx < height_1; idx += 2) {
+    src_line = _mm_load_si128((const __m128i *)ref);
+    t0 = _mm_unpacklo_epi8(src_line, zero);
+    t1 = _mm_unpackhi_epi8(src_line, zero);
+    s0 = _mm_adds_epu16(s0, t0);
+    s1 = _mm_adds_epu16(s1, t1);
+    ref += ref_stride;
+
+    src_line = _mm_load_si128((const __m128i *)ref);
+    t0 = _mm_unpacklo_epi8(src_line, zero);
+    t1 = _mm_unpackhi_epi8(src_line, zero);
+    s0 = _mm_adds_epu16(s0, t0);
+    s1 = _mm_adds_epu16(s1, t1);
+    ref += ref_stride;
+  }
+
+  src_line = _mm_load_si128((const __m128i *)ref);
+  t0 = _mm_unpacklo_epi8(src_line, zero);
+  t1 = _mm_unpackhi_epi8(src_line, zero);
+  s0 = _mm_adds_epu16(s0, t0);
+  s1 = _mm_adds_epu16(s1, t1);
+
+  _mm_store_si128((__m128i *)hbuf, s0);
+  hbuf += 8;
+  _mm_store_si128((__m128i *)hbuf, s1);
+}
+
+int16_t vp9_int_pro_col_sse2(uint8_t const *ref, const int width) {
+  __m128i zero = _mm_setzero_si128();
+  __m128i src_line = _mm_load_si128((const __m128i *)ref);
+  __m128i s0 = _mm_sad_epu8(src_line, zero);
+  __m128i s1;
+  (void) width;  // width = 64
+
+  ref += 16;
+  src_line = _mm_load_si128((const __m128i *)ref);
+  s1 = _mm_sad_epu8(src_line, zero);
+  s0 = _mm_adds_epu16(s0, s1);
+
+  ref += 16;
+  src_line = _mm_load_si128((const __m128i *)ref);
+  s1 = _mm_sad_epu8(src_line, zero);
+  s0 = _mm_adds_epu16(s0, s1);
+
+  ref += 16;
+  src_line = _mm_load_si128((const __m128i *)ref);
+  s1 = _mm_sad_epu8(src_line, zero);
+  s0 = _mm_adds_epu16(s0, s1);
+
+  s1 = _mm_srli_si128(s0, 8);
+  s0 = _mm_adds_epu16(s0, s1);
+
+  return _mm_extract_epi16(s0, 0);
+}
+
+int vp9_vector_sad_sse2(int16_t const *ref, int16_t const *src,
+                        const int width) {
+  int idx;
+  __m128i zero = _mm_setzero_si128();
+  __m128i sum;
+  __m128i v0 = _mm_loadu_si128((const __m128i *)ref);
+  __m128i v1 = _mm_load_si128((const __m128i *)src);
+  __m128i diff = _mm_subs_epi16(v0, v1);
+  __m128i sign = _mm_srai_epi16(diff, 15);
+
+  diff = _mm_xor_si128(diff, sign);
+  sum = _mm_sub_epi16(diff, sign);
+
+  (void) width;  // width = 64;
+
+  ref += 8;
+  src += 8;
+
+  v0 = _mm_unpacklo_epi16(sum, zero);
+  v1 = _mm_unpackhi_epi16(sum, zero);
+  sum = _mm_add_epi32(v0, v1);
+
+  for (idx = 1; idx < 8; ++idx) {
+    v0 = _mm_loadu_si128((const __m128i *)ref);
+    v1 = _mm_load_si128((const __m128i *)src);
+    diff = _mm_subs_epi16(v0, v1);
+    sign = _mm_srai_epi16(diff, 15);
+    diff = _mm_xor_si128(diff, sign);
+    diff = _mm_sub_epi16(diff, sign);
+
+    v0 = _mm_unpacklo_epi16(diff, zero);
+    v1 = _mm_unpackhi_epi16(diff, zero);
+
+    sum = _mm_add_epi32(sum, v0);
+    sum = _mm_add_epi32(sum, v1);
+
+    ref += 8;
+    src += 8;
+  }
+
+  v0 = _mm_srli_si128(sum, 8);
+  sum = _mm_add_epi32(sum, v0);
+  v0 = _mm_srli_epi64(sum, 32);
+  sum = _mm_add_epi32(sum, v0);
+
+  return _mm_cvtsi128_si32(sum);
+}