libwebp: update to v0.5.1

third_party/libwebp/dsp/enc_mips_dsp_r2.c

 // Copyright 2014 Google Inc. All Rights Reserved.
 //
 // Use of this source code is governed by a BSD-style license
 // that can be found in the COPYING 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.
 // -----------------------------------------------------------------------------
 //
 // MIPS version of speed-critical encoding functions.
@@ skipping 1375 matching lines @@
 // A, B, C, D - offsets in bytes to load from out buffer
 #define CONVERT_COEFFS_TO_BIN(A, B, C, D)                                      \
   "ulw        %[temp0],  " #A "(%[out])                \n\t"                   \
   "ulw        %[temp1],  " #B "(%[out])                \n\t"                   \
   "ulw        %[temp2],  " #C "(%[out])                \n\t"                   \
   "ulw        %[temp3],  " #D "(%[out])                \n\t"                   \
   "absq_s.ph  %[temp0],  %[temp0]                      \n\t"                   \
   "absq_s.ph  %[temp1],  %[temp1]                      \n\t"                   \
   "absq_s.ph  %[temp2],  %[temp2]                      \n\t"                   \
   "absq_s.ph  %[temp3],  %[temp3]                      \n\t"                   \
-  /* TODO(skal): add rounding ? shra_r.ph : shra.ph */                         \
-  /*             for following 4 instructions       */                         \
   "shra.ph    %[temp0],  %[temp0],    3                \n\t"                   \
   "shra.ph    %[temp1],  %[temp1],    3                \n\t"                   \
   "shra.ph    %[temp2],  %[temp2],    3                \n\t"                   \
   "shra.ph    %[temp3],  %[temp3],    3                \n\t"                   \
   "shll_s.ph  %[temp0],  %[temp0],    10               \n\t"                   \
   "shll_s.ph  %[temp1],  %[temp1],    10               \n\t"                   \
   "shll_s.ph  %[temp2],  %[temp2],    10               \n\t"                   \
   "shll_s.ph  %[temp3],  %[temp3],    10               \n\t"                   \
   "shrl.ph    %[temp0],  %[temp0],    10               \n\t"                   \
   "shrl.ph    %[temp1],  %[temp1],    10               \n\t"                   \
@@ skipping 95 matching lines @@
   VP8EncQuantize2Blocks = Quantize2Blocks;
   VP8FTransformWHT = FTransformWHT;
   VP8CollectHistogram = CollectHistogram;
 }
 
 #else  // !WEBP_USE_MIPS_DSP_R2
 
 WEBP_DSP_INIT_STUB(VP8EncDspInitMIPSdspR2)
 
 #endif  // WEBP_USE_MIPS_DSP_R2