libvpx: Pull from upstream

source/libvpx/vp9/encoder/x86/vp9_dct_impl_sse2.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 560 matching lines @@
 
 void FDCT16x16_2D(const int16_t *input, tran_low_t *output, int stride) {
   // The 2D transform is done with two passes which are actually pretty
   // similar. In the first one, we transform the columns and transpose
   // the results. In the second one, we transform the rows. To achieve that,
   // as the first pass results are transposed, we transpose the columns (that
   // is the transposed rows) and transpose the results (so that it goes back
   // in normal/row positions).
   int pass;
   // We need an intermediate buffer between passes.
-  DECLARE_ALIGNED_ARRAY(16, int16_t, intermediate, 256);
+  DECLARE_ALIGNED(16, int16_t, intermediate[256]);
   const int16_t *in = input;
   int16_t *out0 = intermediate;
   tran_low_t *out1 = output;
   // Constants
   //    When we use them, in one case, they are all the same. In all others
   //    it's a pair of them that we need to repeat four times. This is done
   //    by constructing the 32 bit constant corresponding to that pair.
   const __m128i k__cospi_p16_p16 = _mm_set1_epi16(cospi_16_64);
   const __m128i k__cospi_p16_m16 = pair_set_epi16(cospi_16_64, -cospi_16_64);
   const __m128i k__cospi_p24_p08 = pair_set_epi16(cospi_24_64, cospi_8_64);
@@ skipping 421 matching lines @@
         out1 += 8*16;
       }
     }
     // Setup in/out for next pass.
     in = intermediate;
   }
 }
 
 #undef ADD_EPI16
 #undef SUB_EPI16