Replace C++ bitfields with our own BitFields

src/utils.h

 // Copyright 2012 the V8 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.
 
 #ifndef V8_UTILS_H_
 #define V8_UTILS_H_
 
 #include <limits.h>
 #include <stdlib.h>
 #include <string.h>
@@ skipping 212 matching lines @@
     return (previous & ~kMask) | encode(value);
   }
 
   // Extracts the bit field from the value.
   static T decode(U value) {
     return static_cast<T>((value & kMask) >> shift);
   }
 };
 
 
+template <class T, int shift, int size>
+class BitField8 : public BitFieldBase<T, shift, size, uint8_t> {};
+
+
+template <class T, int shift, int size>
+class BitField16 : public BitFieldBase<T, shift, size, uint16_t> {};
+
+
 template<class T, int shift, int size>
 class BitField : public BitFieldBase<T, shift, size, uint32_t> { };
 
 
 template<class T, int shift, int size>
 class BitField64 : public BitFieldBase<T, shift, size, uint64_t> { };
 
 
 // ----------------------------------------------------------------------------
 // BitSetComputer is a help template for encoding and decoding information for
@@ skipping 1286 matching lines @@
   // Takes the address of the limit variable in order to find out where
   // the top of stack is right now.
   uintptr_t limit = reinterpret_cast<uintptr_t>(&limit);
   return limit;
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_UTILS_H_