libvpx: Pull from upstream

source/libvpx/vp9/common/x86/vp9_idct_intrin_ssse3.c

 /*
  *  Copyright (c) 2014 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.
  */
 
@@ skipping 18 matching lines @@
   const __m128i k__cospi_p04_p28 = pair_set_epi16(cospi_4_64, cospi_28_64);
   const __m128i k__cospi_p12_m20 = pair_set_epi16(cospi_12_64, -cospi_20_64);
   const __m128i k__cospi_p20_p12 = pair_set_epi16(cospi_20_64, cospi_12_64);
   const __m128i k__cospi_p24_m08 = pair_set_epi16(cospi_24_64, -cospi_8_64);
   const __m128i k__cospi_p08_p24 = pair_set_epi16(cospi_8_64, cospi_24_64);
   const __m128i k__cospi_m08_p24 = pair_set_epi16(-cospi_8_64, cospi_24_64);
   const __m128i k__cospi_p24_p08 = pair_set_epi16(cospi_24_64, cospi_8_64);
   const __m128i k__cospi_m24_m08 = pair_set_epi16(-cospi_24_64, -cospi_8_64);
   const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING);
   const __m128i k__cospi_p16_p16_x2 = pair_set_epi16(23170, 23170);
-  const __m128i k__cospi_p16_p16 = _mm_set1_epi16(cospi_16_64);
+  const __m128i k__cospi_p16_p16 = _mm_set1_epi16((int16_t)cospi_16_64);
   const __m128i k__cospi_m16_p16 = pair_set_epi16(-cospi_16_64, cospi_16_64);
 
   __m128i v[16], u[16], s[16], t[16];
 
   // stage 1
   s[0] = in[0];
   s[1] = in[8];
   s[2] = in[4];
   s[3] = in[12];
   s[4] = in[2];
@@ skipping 703 matching lines @@
     RECON_AND_STORE(dest, in[10]);
     RECON_AND_STORE(dest, in[11]);
     RECON_AND_STORE(dest, in[12]);
     RECON_AND_STORE(dest, in[13]);
     RECON_AND_STORE(dest, in[14]);
     RECON_AND_STORE(dest, in[15]);
 
     dest += 8 - (stride * 16);
   }
 }