Subzero: Use C++11 member initializers where practical.

src/IceCfgNode.h

 //===- subzero/src/IceCfgNode.h - Control flow graph node -------*- 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 CfgNode class, which represents a single
@@ skipping 78 matching lines @@
   void doBranchOpt(const CfgNode *NextNode);
   void emit(Cfg *Func) const;
   void emitIAS(Cfg *Func) const;
   void dump(Cfg *Func) const;
 
   void profileExecutionCount(VariableDeclaration *Var);
 
 private:
   CfgNode(Cfg *Func, SizeT LabelIndex);
   Cfg *const Func;
-  SizeT Number;                       // label index
-  Cfg::IdentifierIndexType NameIndex; // index into Cfg::NodeNames table
-  bool HasReturn;                     // does this block need an epilog?
-  bool NeedsPlacement;
-  InstNumberT InstCountEstimate; // rough instruction count estimate
-  NodeList InEdges;              // in no particular order
-  NodeList OutEdges;             // in no particular order
-  PhiList Phis;                  // unordered set of phi instructions
-  InstList Insts;                // ordered list of non-phi instructions
+  SizeT Number; // label index
+  Cfg::IdentifierIndexType NameIndex =
+      Cfg::IdentifierIndexInvalid; // index into Cfg::NodeNames table
+  bool HasReturn = false;          // does this block need an epilog?
+  bool NeedsPlacement = false;
+  InstNumberT InstCountEstimate = 0; // rough instruction count estimate
+  NodeList InEdges;                  // in no particular order
+  NodeList OutEdges;                 // in no particular order
+  PhiList Phis;                      // unordered set of phi instructions
+  InstList Insts;                    // ordered list of non-phi instructions
 };
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICECFGNODE_H