X64: Fixed conversion between tread_id (int) and void*.

src/platform.h

 // Copyright 2006-2008 the V8 project authors. 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.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 332 matching lines @@
   // Wait until thread terminates.
   void Join();
 
   // Abstract method for run handler.
   virtual void Run() = 0;
 
   // Thread-local storage.
   static LocalStorageKey CreateThreadLocalKey();
   static void DeleteThreadLocalKey(LocalStorageKey key);
   static void* GetThreadLocal(LocalStorageKey key);
+  static int GetThreadLocalInt(LocalStorageKey key) {
+    return static_cast<int>(reinterpret_cast<intptr_t>(GetThreadLocal(key)));
+  }
   static void SetThreadLocal(LocalStorageKey key, void* value);
+  static void SetThreadLocalInt(LocalStorageKey key, int value) {
+    SetThreadLocal(key, reinterpret_cast<void*>(static_cast<intptr_t>(value)));
+  }
+  static bool HasThreadLocal(LocalStorageKey key) {
+    return GetThreadLocal(key) != NULL;
+  }
 
   // A hint to the scheduler to let another thread run.
   static void YieldCPU();
 
  private:
   class PlatformData;
   PlatformData* data_;
   DISALLOW_COPY_AND_ASSIGN(Thread);
 };
 
@@ skipping 155 matching lines @@
   bool active_;
   PlatformData* data_;  // Platform specific data.
   DISALLOW_IMPLICIT_CONSTRUCTORS(Sampler);
 };
 
 #endif  // ENABLE_LOGGING_AND_PROFILING
 
 } }  // namespace v8::internal
 
 #endif  // V8_PLATFORM_H_