Subzero: Enhance the timer dump format.

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.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file declares the TimerTree class, which allows flat and
@@ skipping 14 matching lines @@
 typedef std::vector<TimerTreeNode>::size_type TTindex;
 
 // TimerTreeNode represents an interior or leaf node in the call tree.
 // It contains a list of children, a pointer to its parent, and the
 // timer ID for the node.  It also holds the cumulative time spent at
 // this node and below.  The children are always at a higher index in
 // the TimerTreeNode::Nodes array, and the parent is always at a lower
 // index.
 class TimerTreeNode {
 public:
-  TimerTreeNode() : Parent(0), Interior(0), Time(0) {}
+  TimerTreeNode() : Parent(0), Interior(0), Time(0), UpdateCount(0) {}
   std::vector<TTindex> Children; // indexed by TimerIdT
   TTindex Parent;
   TimerIdT Interior;
   double Time;
+  size_t UpdateCount;
 };
 
 class TimerStack {
   // TimerStack(const TimerStack &) = delete;
   TimerStack &operator=(const TimerStack &) = delete;
 
 public:
   enum TimerTag {
 #define X(tag) TT_##tag,
     TIMERTREE_TABLE
 #undef X
         TT__num
   };
   TimerStack(const IceString &Name);
   TimerIdT getTimerID(const IceString &Name);
   void setName(const IceString &NewName) { Name = NewName; }
   void push(TimerIdT ID);
   void pop(TimerIdT ID);
   void reset();
   void dump(Ostream &Str, bool DumpCumulative);
 
 private:
-  void update();
+  void update(bool UpdateCounts);
   static double timestamp();
   IceString Name;
   double FirstTimestamp;
   double LastTimestamp;
   uint64_t StateChangeCount;
   // IDsIndex maps a symbolic timer name to its integer ID.
   std::map<IceString, TimerIdT> IDsIndex;
   std::vector<IceString> 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;
 };
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICETIMERTREE_H