MIPS: added optimization for functions from SkBlitRow.

gyp/opts.gyp

 # Gyp file for opts projects
 {
   'targets': [
     # Due to an unfortunate intersection of lameness between gcc and gyp,
     # we have to build the *_SSE2.cpp files in a separate target.  The
     # gcc lameness is that, in order to compile SSE2 intrinsics code, it
     # must be passed the -msse2 flag.  However, with this flag, it may
     # emit SSE2 instructions even for scalar code, such as the CPUID
     # test used to test for the presence of SSE2.  So that, and all other
     # code must be compiled *without* -msse2.  The gyp lameness is that it
@@ skipping 82 matching lines @@
             [ 'skia_os == "ios"', {
               'sources!': [
                 # these fail to compile under xcode for ios
                 '../src/opts/memset.arm.S',
                 '../src/opts/SkBitmapProcState_opts_arm.cpp',
                 '../src/opts/SkBlitRow_opts_arm.cpp',
               ],
             }],
           ],
         }],
-        [ '(skia_arch_type == "mips") or (skia_arch_type == "arm" and arm_version < 7) \
+        [ 'skia_arch_type == "mips"', {
+          'sources': [
+            '../src/opts/SkBitmapProcState_opts_none.cpp',
+            '../src/opts/SkBlitMask_opts_none.cpp',
+            '../src/opts/SkBlurImage_opts_none.cpp',
+            '../src/opts/SkMorphology_opts_none.cpp',
+            '../src/opts/SkUtils_opts_none.cpp',
+            '../src/opts/SkXfermode_opts_none.cpp',
+          ],
+          'conditions': [
+            [ '(mips_arch_variant == "mips32r2") \
+                and (mips_dsp == 1 or mips_dsp == 2)', {
+              'sources': [
+                '../src/opts/SkBlitRow_opts_mips_dsp.cpp',
+              ],
+            }, {
+              'sources': [
+                '../src/opts/SkBlitRow_opts_none.cpp',
+              ],
+            }],
+          ],
+        }],
+        [ '(skia_arch_type == "arm" and arm_version < 7) \
             or (skia_os == "ios") \
             or (skia_os == "android" and skia_arch_type not in ["x86", "arm", "mips", "arm64"])', {
           'sources': [
             '../src/opts/SkBitmapProcState_opts_none.cpp',
             '../src/opts/SkBlitMask_opts_none.cpp',
             '../src/opts/SkBlitRow_opts_none.cpp',
             '../src/opts/SkBlurImage_opts_none.cpp',
             '../src/opts/SkMorphology_opts_none.cpp',
             '../src/opts/SkUtils_opts_none.cpp',
             '../src/opts/SkXfermode_opts_none.cpp',
@@ skipping 101 matching lines @@
         '../src/opts/SkBitmapProcState_matrix_neon.h',
         '../src/opts/SkBlitMask_opts_arm_neon.cpp',
         '../src/opts/SkBlitRow_opts_arm_neon.cpp',
         '../src/opts/SkBlurImage_opts_neon.cpp',
         '../src/opts/SkMorphology_opts_neon.cpp',
         '../src/opts/SkXfermode_opts_arm_neon.cpp',
       ],
     },
   ],
 }