Add support for NEON intrinsics to speed up texture compression. We can

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 13 matching lines @@
       'product_name': 'skia_opts',
       'type': 'static_library',
       'standalone_static_library': 1,
       'dependencies': [
         'core.gyp:*',
         'effects.gyp:*'
       ],
       'include_dirs': [
         '../src/core',
         '../src/opts',
+        '../src/utils',
       ],
       'conditions': [
         [ 'skia_arch_type == "x86" and skia_os != "ios"', {
           'conditions': [
             [ 'skia_os in ["linux", "freebsd", "openbsd", "solaris", "nacl", "chromeos", "android"]', {
               'cflags': [
                 '-msse2',
               ],
             }],
           ],
           'include_dirs': [
             '../include/utils',
           ],
           'dependencies': [
             'opts_ssse3',
             'opts_sse4',
           ],
           'sources': [
             '../src/opts/opts_check_x86.cpp',
             '../src/opts/SkBitmapProcState_opts_SSE2.cpp',
             '../src/opts/SkBitmapFilter_opts_SSE2.cpp',
             '../src/opts/SkBlitRow_opts_SSE2.cpp',
             '../src/opts/SkBlitRect_opts_SSE2.cpp',
             '../src/opts/SkBlurImage_opts_SSE2.cpp',
             '../src/opts/SkMorphology_opts_SSE2.cpp',
+            '../src/opts/SkTextureCompression_opts_none.cpp',
             '../src/opts/SkUtils_opts_SSE2.cpp',
             '../src/opts/SkXfermode_opts_SSE2.cpp',
           ],
         }],
         [ 'skia_arch_type == "arm" and arm_version >= 7', {
           # The assembly uses the frame pointer register (r7 in Thumb/r11 in
           # ARM), the compiler doesn't like that.
           'cflags!': [
             '-fno-omit-frame-pointer',
             '-mapcs-frame',
             '-mapcs',
           ],
           'cflags': [
             '-fomit-frame-pointer',
             '-mno-apcs-frame',
           ],
           'variables': {
             'arm_neon_optional%': '<(arm_neon_optional>',
           },
           'sources': [
             '../src/opts/memset.arm.S',
             '../src/opts/SkBitmapProcState_opts_arm.cpp',
             '../src/opts/SkBlitMask_opts_arm.cpp',
             '../src/opts/SkBlitRow_opts_arm.cpp',
             '../src/opts/SkBlurImage_opts_arm.cpp',
             '../src/opts/SkMorphology_opts_arm.cpp',
+            '../src/opts/SkTextureCompression_opts_arm.cpp',
             '../src/opts/SkUtils_opts_arm.cpp',
             '../src/opts/SkXfermode_opts_arm.cpp',
           ],
           'conditions': [
             [ 'arm_neon == 1 or arm_neon_optional == 1', {
               'dependencies': [
                 'opts_neon',
               ]
             }],
             [ '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"', {
           'sources': [
             '../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/SkTextureCompression_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/SkBitmapProcState_opts_mips_dsp.cpp',
                 '../src/opts/SkBlitRow_opts_mips_dsp.cpp',
               ],
             }, {
               'sources': [
                 '../src/opts/SkBitmapProcState_opts_none.cpp',
                 '../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/SkTextureCompression_opts_none.cpp',
             '../src/opts/SkXfermode_opts_none.cpp',
           ],
         }],
         [ 'skia_android_framework', {
           'cflags!': [
             '-msse2',
             '-mfpu=neon',
             '-fomit-frame-pointer',
             '-mno-apcs-frame',
           ]
         }],
         [ 'skia_arch_type == "arm64"', {
           'sources': [
             '../src/opts/SkBitmapProcState_arm_neon.cpp',
             '../src/opts/SkBitmapProcState_matrixProcs_neon.cpp',
             '../src/opts/SkBitmapProcState_opts_arm.cpp',
             '../src/opts/SkBlitMask_opts_arm.cpp',
             '../src/opts/SkBlitMask_opts_arm_neon.cpp',
             '../src/opts/SkBlitRow_opts_arm.cpp',
             '../src/opts/SkBlitRow_opts_arm_neon.cpp',
             '../src/opts/SkBlurImage_opts_arm.cpp',
             '../src/opts/SkBlurImage_opts_neon.cpp',
             '../src/opts/SkMorphology_opts_arm.cpp',
             '../src/opts/SkMorphology_opts_neon.cpp',
+            '../src/opts/SkTextureCompression_opts_none.cpp',
             '../src/opts/SkUtils_opts_none.cpp',
             '../src/opts/SkXfermode_opts_arm.cpp',
             '../src/opts/SkXfermode_opts_arm_neon.cpp',
           ],
         }],
       ],
     },
     # For the same lame reasons as what is done for skia_opts, we have to
     # create another target specifically for SSSE3 code as we would not want
     # to compile the SSE2 code with -mssse3 which would potentially allow
     # gcc to generate SSSE3 code.
     {
       'target_name': 'opts_ssse3',
       'product_name': 'skia_opts_ssse3',
       'type': 'static_library',
       'standalone_static_library': 1,
       'dependencies': [
         'core.gyp:*',
         'effects.gyp:*'
       ],
       'include_dirs': [
         '../src/core',
+        '../src/utils',
       ],
       'conditions': [
         [ 'skia_os in ["linux", "freebsd", "openbsd", "solaris", "nacl", "chromeos", "android"] \
            and not skia_android_framework', {
           'cflags': [
             '-mssse3',
           ],
         }],
         # (Mac has -mssse3 globally.)
         [ 'skia_arch_type == "x86"', {
@@ skipping 11 matching lines @@
       'target_name': 'opts_sse4',
       'product_name': 'skia_opts_sse4',
       'type': 'static_library',
       'standalone_static_library': 1,
       'dependencies': [
         'core.gyp:*',
         'effects.gyp:*'
       ],
       'include_dirs': [
         '../src/core',
+        '../src/utils',
       ],
       'conditions': [
         [ 'skia_os in ["linux", "freebsd", "openbsd", "solaris", "nacl", "chromeos", "android"] \
            and not skia_android_framework', {
           'cflags': [
             '-msse4',
           ],
         }],
         [ 'skia_os == "mac"', {
           'xcode_settings': {
@@ skipping 33 matching lines @@
       'product_name': 'skia_opts_neon',
       'type': 'static_library',
       'standalone_static_library': 1,
       'dependencies': [
         'core.gyp:*',
         'effects.gyp:*'
       ],
       'include_dirs': [
         '../src/core',
         '../src/opts',
+        '../src/utils',
       ],
       'cflags!': [
         '-fno-omit-frame-pointer',
         '-mfpu=vfp',  # remove them all, just in case.
         '-mfpu=vfpv3',
         '-mfpu=vfpv3-d16',
       ],
       'conditions': [
         [ 'not skia_android_framework', {
           'cflags': [
             '-mfpu=neon',
             '-fomit-frame-pointer',
           ],
         }],
       ],
       'ldflags': [
         '-march=armv7-a',
         '-Wl,--fix-cortex-a8',
       ],
       'sources': [
         '../src/opts/memset16_neon.S',
         '../src/opts/memset32_neon.S',
         '../src/opts/SkBitmapProcState_arm_neon.cpp',
         '../src/opts/SkBitmapProcState_matrixProcs_neon.cpp',
         '../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/SkTextureCompression_opts_neon.cpp',
         '../src/opts/SkXfermode_opts_arm_neon.cpp',
       ],
     },
   ],
 }