Subzero: Remove IceString.

src/IceGlobalInits.cpp

 //===- subzero/src/IceGlobalInits.cpp - Global declarations ---------------===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 74 matching lines @@
     const Intrinsics::FullIntrinsicInfo *Info) const {
   if (Signature.getNumArgs() != Info->getNumArgs())
     return false;
   for (SizeT i = 0; i < Signature.getNumArgs(); ++i) {
     if (Signature.getArgType(i) != Info->getArgType(i))
       return false;
   }
   return Signature.getReturnType() == Info->getReturnType();
 }
 
-IceString FunctionDeclaration::getTypeSignatureError(const GlobalContext *Ctx) {
+std::string
+FunctionDeclaration::getTypeSignatureError(const GlobalContext *Ctx) {
   std::string Buffer;
   llvm::raw_string_ostream StrBuf(Buffer);
   StrBuf << "Invalid";
   bool IsIntrinsic;
   const Intrinsics::FullIntrinsicInfo *Info =
       getIntrinsicInfo(Ctx, &IsIntrinsic);
   if (IsIntrinsic && Info == nullptr) {
     StrBuf << " intrinsic name: " << getName();
     return StrBuf.str();
   }
@@ skipping 131 matching lines @@
   dumpType(Stream);
   Stream << ")";
   if (Offset != 0) {
     Stream << ", ";
     dumpType(Stream);
     Stream << " " << Offset << ")";
   }
 }
 
 } // end of namespace Ice