Subzero: Make Ice::Ostream a typedef for llvm::raw_ostream.

src/IceTypes.h

 //===- subzero/src/IceTypes.h - Primitive ICE types -------------*- 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 a few properties of the primitive types allowed
@@ skipping 27 matching lines @@
   Opt_m1,
   Opt_0,
   Opt_1,
   Opt_2
 };
 
 size_t typeWidthInBytes(Type Ty);
 size_t typeAlignInBytes(Type Ty);
 size_t typeNumElements(Type Ty);
 Type typeElementType(Type Ty);
+const char *typeString(Type Ty);
 
 inline bool isVectorType(Type Ty) { return typeNumElements(Ty) > 1; }
 
-template <> Ostream &operator<<(class Ostream &Str, const Type &Ty);
+template <typename StreamType>
+inline StreamType &operator<<(StreamType &Str, const Type &Ty) {
+  Str << typeString(Ty);
+  return Str;
+}
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICETYPES_H