Subzero: Remove IceString.

src/IceTimerTree.h

 //===- subzero/src/IceTimerTree.h - Pass timer defs -------------*- C++ -*-===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 44 matching lines @@
     size_t UpdateCount = 0;
   };
 
 public:
   enum TimerTag {
 #define X(tag) TT_##tag,
     TIMERTREE_TABLE
 #undef X
         TT__num
   };
-  explicit TimerStack(const IceString &Name);
+  explicit TimerStack(const std::string &Name);
   TimerStack(const TimerStack &) = default;
-  TimerIdT getTimerID(const IceString &Name);
+  TimerIdT getTimerID(const std::string &Name);
   void mergeFrom(const TimerStack &Src);
-  void setName(const IceString &NewName) { Name = NewName; }
-  const IceString &getName() const { return Name; }
+  void setName(const std::string &NewName) { Name = NewName; }
+  const std::string &getName() const { return Name; }
   void push(TimerIdT ID);
   void pop(TimerIdT ID);
   void reset();
   void dump(Ostream &Str, bool DumpCumulative);
 
 private:
   void update(bool UpdateCounts);
   static double timestamp();
   TranslationType translateIDsFrom(const TimerStack &Src);
   PathType getPath(TTindex Index, const TranslationType &Mapping) const;
   TTindex getChildIndex(TTindex Parent, TimerIdT ID);
   TTindex findPath(const PathType &Path);
-  IceString Name;
+  std::string Name;
   double FirstTimestamp;
   double LastTimestamp;
   uint64_t StateChangeCount = 0;
   /// IDsIndex maps a symbolic timer name to its integer ID.
-  std::map<IceString, TimerIdT> IDsIndex;
-  std::vector<IceString> IDs;       /// indexed by TimerIdT
+  std::map<std::string, TimerIdT> IDsIndex;
+  std::vector<std::string> IDs;     /// indexed by TimerIdT
   std::vector<TimerTreeNode> Nodes; /// indexed by TTindex
   std::vector<double> LeafTimes;    /// indexed by TimerIdT
   std::vector<size_t> LeafCounts;   /// indexed by TimerIdT
   TTindex StackTop = 0;
 };
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICETIMERTREE_H