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

src/IceTypes.cpp

 //===- subzero/src/IceTypes.cpp - Primitive type properties ---------------===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file defines a few attributes of Subzero primitive types.
@@ skipping 63 matching lines @@
   Type ElementType = IceType_void;
   size_t Index = static_cast<size_t>(Ty);
   if (Index < TypeAttributesSize) {
     ElementType = TypeAttributes[Index].TypeElementType;
   } else {
     llvm_unreachable("Invalid type for typeElementType()");
   }
   return ElementType;
 }
 
-// ======================== Dump routines ======================== //
-
-template <> Ostream &operator<<(Ostream &Str, const Type &Ty) {
+const char *typeString(Type Ty) {
   size_t Index = static_cast<size_t>(Ty);
   if (Index < TypeAttributesSize) {
-    Str << TypeAttributes[Index].DisplayString;
-  } else {
-    Str << "???";
-    llvm_unreachable("Invalid type for printing");
+    return TypeAttributes[Index].DisplayString;
   }
-
-  return Str;
+  llvm_unreachable("Invalid type for typeString");
+  return "???";
 }
 
 } // end of namespace Ice