Use sse4.2 CRC32 instructions to hash when available.

src/utils/SkWhitelistTypefaces.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
-#include "SkChecksum.h"
 #include "SkFontDescriptor.h"
+#include "SkOpts.h"
 #include "SkStream.h"
 #include "SkString.h"
 #include "SkTypeface.h"
 #include "SkUtils.h"
 #include "../sfnt/SkOTUtils.h"
 
 #include "SkWhitelistChecksums.inc"
 
 #define WHITELIST_DEBUG 0
 
@@ skipping 53 matching lines @@
     }
     SkTDArray<char> data;
     size_t length = fontStream->getLength();
     if (!length) {
         return 0;
     }
     data.setCount((int) length);
     if (!fontStream->peek(data.begin(), length)) {
         return 0;
     }
-    return SkChecksum::Murmur3(data.begin(), length);
+    return SkOpts::hash(data.begin(), length);
 }
 
 static void serialize_sub(const char* fontName, SkFontStyle style, SkWStream* wstream) {
     SkFontDescriptor desc;
     SkString subName(SUBNAME_PREFIX);
     subName.append(fontName);
     const char* familyName = subName.c_str();
     desc.setFamilyName(familyName);
     desc.setStyle(style);
     desc.serialize(wstream);
@@ skipping 170 matching lines @@
         const char* fontName = whitelist[i].fFontName;
         sk_sp<SkTypeface> tf(SkTypeface::MakeFromName(fontName, SkFontStyle()));
         uint32_t checksum = compute_checksum(tf.get());
         line.printf(checksumEntry, fontName, checksum);
         sk_fwrite(line.c_str(), line.size(), file);
     }
     sk_fwrite(checksumTrailer, sizeof(checksumTrailer) - 1, file);
     sk_fclose(file);
     return true;
 }