Subzero: Remove IceString.

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.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 64 matching lines @@
 };
 
 enum OptLevel { Opt_m1, Opt_0, Opt_1, Opt_2 };
 
 size_t typeWidthInBytes(Type Ty);
 int8_t typeWidthInBytesLog2(Type Ty);
 size_t typeAlignInBytes(Type Ty);
 size_t typeNumElements(Type Ty);
 Type typeElementType(Type Ty);
 const char *typeString(Type Ty);
-inline IceString typeIceString(Type Ty) { return typeString(Ty); }
+inline std::string typeStdString(Type Ty) { return typeString(Ty); }
 const char *regClassString(RegClass C);
 
 inline Type getPointerType() { return IceType_i32; }
 
 bool isVectorType(Type Ty);
 
 bool isIntegerType(Type Ty); // scalar or vector
 bool isScalarIntegerType(Type Ty);
 bool isVectorIntegerType(Type Ty);
 bool isIntegerArithmeticType(Type Ty);
@@ skipping 87 matching lines @@
 };
 
 inline Ostream &operator<<(Ostream &Stream, const FuncSigType &Sig) {
   Sig.dump(Stream);
   return Stream;
 }
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICETYPES_H