Write out global initializers and data rel directly to ELF file.

src/IceGlobalInits.h

 //===- subzero/src/IceGlobalInits.h - Global declarations -------*- C++ -*-===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file declares the representation of function declarations,
@@ skipping 139 matching lines @@
     virtual void dumpType(Ostream &Stream) const;
 
   protected:
     explicit Initializer(InitializerKind Kind) : Kind(Kind) {}
 
   private:
     const InitializerKind Kind;
   };
 
   // Models the data in a data initializer.
-  typedef std::vector<uint8_t> DataVecType;
+  typedef std::vector<char> DataVecType;
 
   /// Defines a sequence of byte values as a data initializer.
   class DataInitializer : public Initializer {
     DataInitializer(const DataInitializer &) = delete;
     DataInitializer &operator=(const DataInitializer &) = delete;
 
   public:
     template <class IntContainer>
     DataInitializer(const IntContainer &Values)
         : Initializer(DataInitializerKind), Contents(Values.size()) {
       size_t i = 0;
       for (auto &V : Values) {
-        Contents[i] = static_cast<uint8_t>(V);
+        Contents[i] = static_cast<int8_t>(V);
         ++i;
       }
     }
     DataInitializer(const char *Str, size_t StrLen)
         : Initializer(DataInitializerKind), Contents(StrLen) {
       for (size_t i = 0; i < StrLen; ++i)
-        Contents[i] = static_cast<uint8_t>(Str[i]);
+        Contents[i] = Str[i];
     }
     ~DataInitializer() override {}
     const DataVecType &getContents() const { return Contents; }
     SizeT getNumBytes() const final { return Contents.size(); }
     void dump(GlobalContext *Ctx, Ostream &Stream) const final;
     static bool classof(const Initializer *D) {
       return D->getKind() == DataInitializerKind;
     }
 
   private:
@@ skipping 120 matching lines @@
 template <class StreamType>
 inline StreamType &operator<<(StreamType &Stream,
                               const GlobalDeclaration &Addr) {
   Addr.dump(Stream);
   return Stream;
 }
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICEGLOBALINITS_H