Change RelocInfo to write 64-bit data field on x64 architecture.

src/assembler.h

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // All Rights Reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 // - Redistributions of source code must retain the above copyright notice,
 // this list of conditions and the following disclaimer.
 //
@@ skipping 254 matching lines @@
     last_pc_ = pc;
   }
 
   // Max size (bytes) of a written RelocInfo.
   static const int kMaxSize = 12;
 
  private:
   inline uint32_t WriteVariableLengthPCJump(uint32_t pc_delta);
   inline void WriteTaggedPC(uint32_t pc_delta, int tag);
   inline void WriteExtraTaggedPC(uint32_t pc_delta, int extra_tag);
-  inline void WriteExtraTaggedData(int32_t data_delta, int top_tag);
-  inline void WriteTaggedData(int32_t data_delta, int tag);
+  inline void WriteExtraTaggedData(intptr_t data_delta, int top_tag);
+  inline void WriteTaggedData(intptr_t data_delta, int tag);
   inline void WriteExtraTag(int extra_tag, int top_tag);
 
   byte* pos_;
   byte* last_pc_;
   intptr_t last_data_;
   DISALLOW_COPY_AND_ASSIGN(RelocInfoWriter);
 };
 
 
 // A RelocIterator iterates over relocation information.
@@ skipping 154 matching lines @@
 static inline bool is_uint4(int x)  { return is_uintn(x, 4); }
 static inline bool is_uint5(int x)  { return is_uintn(x, 5); }
 static inline bool is_uint8(int x)  { return is_uintn(x, 8); }
 static inline bool is_uint12(int x)  { return is_uintn(x, 12); }
 static inline bool is_uint16(int x)  { return is_uintn(x, 16); }
 static inline bool is_uint24(int x)  { return is_uintn(x, 24); }
 
 } }  // namespace v8::internal
 
 #endif  // V8_ASSEMBLER_H_