Move MMX class to the implementation side.

src/Reactor/Nucleus.cpp

@@ -846,6 +846,12 @@ namespace sw
 		return Nucleus::createGEP(address, index);
 	}
 
+	class MMX : public Variable<MMX>
+	{
+	public:
+		static Type *getType();
+	};
+
 	Type *MMX::getType()
 	{
 		return Type::getX86_MMXTy(*Nucleus::getContext());

src/Reactor/Nucleus.hpp

@@ -379,12 +379,6 @@ namespace sw
 		llvm::Value *value;
 	};
 
-	class MMX : public Variable<MMX>
-	{
-	public:
-		static llvm::Type *getType();
-	};
-
 	class Bool : public Variable<Bool>
 	{
 	public: