Add MIPS SIMD Arch (MSA) optimized ARGBMirrorRow function

source/planar_functions.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 641 matching lines @@
   }
 #endif
 #if defined(HAS_ARGBMIRRORROW_AVX2)
   if (TestCpuFlag(kCpuHasAVX2)) {
     ARGBMirrorRow = ARGBMirrorRow_Any_AVX2;
     if (IS_ALIGNED(width, 8)) {
       ARGBMirrorRow = ARGBMirrorRow_AVX2;
     }
   }
 #endif
+#if defined(HAS_ARGBMIRRORROW_MSA)
+  if (TestCpuFlag(kCpuHasMSA)) {
+    ARGBMirrorRow = ARGBMirrorRow_Any_MSA;
+    if (IS_ALIGNED(width, 16)) {
+      ARGBMirrorRow = ARGBMirrorRow_MSA;
+    }
+  }
+#endif
 
   // Mirror plane
   for (y = 0; y < height; ++y) {
     ARGBMirrorRow(src_argb, dst_argb, width);
     src_argb += src_stride_argb;
     dst_argb += dst_stride_argb;
   }
   return 0;
 }
 
@@ skipping 2138 matching lines @@
     }
     free_aligned_buffer_64(rows);
   }
   return 0;
 }
 
 #ifdef __cplusplus
 }  // extern "C"
 }  // namespace libyuv
 #endif