libvpx: Pull from upstream

source/libvpx/vp9/common/arm/neon/vp9_iht8x8_add_neon.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.
  */
 
 #include <arm_neon.h>
 #include <assert.h>
 
 #include "./vp9_rtcd.h"
 #include "./vpx_config.h"
 #include "vp9/common/vp9_common.h"
 
-#if (__clang_major__ == 3) && (__clang_minor__ == 6)
-// http://llvm.org/bugs/show_bug.cgi?id=22178
-void vp9_iht8x8_64_add_neon(const tran_low_t *input, uint8_t *dest,
-                            int dest_stride, int tx_type) {
-  vp9_iht8x8_64_add_c(input, dest, dest_stride, tx_type);
-}
-#else
 static int16_t cospi_2_64 = 16305;
 static int16_t cospi_4_64 = 16069;
 static int16_t cospi_6_64 = 15679;
 static int16_t cospi_8_64 = 15137;
 static int16_t cospi_10_64 = 14449;
 static int16_t cospi_12_64 = 13623;
 static int16_t cospi_14_64 = 12665;
 static int16_t cospi_16_64 = 11585;
 static int16_t cospi_18_64 = 10394;
 static int16_t cospi_20_64 = 9102;
@@ skipping 587 matching lines @@
         d2 += dest_stride;
         vst1_u64((uint64_t *)d2, vreinterpret_u64_u8(d1u8));
         d2 += dest_stride;
         vst1_u64((uint64_t *)d2, vreinterpret_u64_u8(d2u8));
         d2 += dest_stride;
         vst1_u64((uint64_t *)d2, vreinterpret_u64_u8(d3u8));
         d2 += dest_stride;
     }
     return;
 }
-#endif