Add MIPS SIMD Arch (MSA) optimized MirrorRow function

source/rotate.cc

 /*
  *  Copyright 2011 The LibYuv 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 123 matching lines @@
   }
 #endif
 // TODO(fbarchard): Mirror on mips handle unaligned memory.
 #if defined(HAS_MIRRORROW_DSPR2)
   if (TestCpuFlag(kCpuHasDSPR2) &&
       IS_ALIGNED(src, 4) && IS_ALIGNED(src_stride, 4) &&
       IS_ALIGNED(dst, 4) && IS_ALIGNED(dst_stride, 4)) {
     MirrorRow = MirrorRow_DSPR2;
   }
 #endif
+#if defined(HAS_MIRRORROW_MSA)
+  if (TestCpuFlag(kCpuHasMSA)) {

[fbarchard1, 2016/09/17 01:01:30]

needs an alignment test now:

#if defined(HAS_MIRRORROW_MSA)
   if (TestCpuFlag(kCpuHasMSA)) {
     MirrorRow = MirrorRow_Any_MSA;
     if (IS_ALIGNED(width, 64)) {
       MirrorRow = MirrorRow_MSA;
     }
   }
#endif

[manojkumar.bhosale, 2016/09/19 08:07:21]

Done.

+    MirrorRow = MirrorRow_MSA;
+  }
+#endif
 #if defined(HAS_COPYROW_SSE2)
   if (TestCpuFlag(kCpuHasSSE2)) {
     CopyRow = IS_ALIGNED(width, 32) ? CopyRow_SSE2 : CopyRow_Any_SSE2;
   }
 #endif
 #if defined(HAS_COPYROW_AVX)
   if (TestCpuFlag(kCpuHasAVX)) {
     CopyRow = IS_ALIGNED(width, 64) ? CopyRow_AVX : CopyRow_Any_AVX;
   }
 #endif
@@ skipping 328 matching lines @@
     default:
       break;
   }
   return -1;
 }
 
 #ifdef __cplusplus
 }  // extern "C"
 }  // namespace libyuv
 #endif