Subzero: Remove IceString.

src/IceClFlags.cpp

 //===- subzero/src/IceClFlags.cpp - Command line flags and parsing --------===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 88 matching lines @@
     cl::NotHidden, cl::aliasopt(AllowExternDefinedSymbolsObj));
 
 std::string AppNameObj;
 
 } // end of anonymous namespace
 
 namespace Ice {
 
 void ClFlags::parseFlags(int argc, char **argv) {
   cl::ParseCommandLineOptions(argc, argv);
-  AppNameObj = IceString(argv[0]);
+  AppNameObj = argv[0];
 }
 
 namespace {
 // flagInitOrStorageTypeDefault is some template voodoo for peeling off the
 // llvm::cl modifiers from a flag's declaration, until its initial value is
 // found. If none is found, then the default value for the storage type is
 // returned.
 template <typename Ty> Ty flagInitOrStorageTypeDefault() { return Ty(); }
 
 template <typename Ty, typename T, typename... A>
@@ skipping 67 matching lines @@
 #undef X
 
   // If any value needs a non-trivial parsed value, set it below.
   OutFlags.setAllowExternDefinedSymbols(AllowExternDefinedSymbolsObj ||
                                         DisableInternalObj);
   OutFlags.setDisableHybridAssembly(DisableHybridAssemblyObj ||
                                     (OutFileTypeObj != Ice::FT_Iasm));
 }
 
 } // end of namespace Ice