Improve use of CfgLocalAllocator and introduce containers that use it.

src/IceCfg.h

 //===- subzero/src/IceCfg.h - Control flow graph ----------------*- C++ -*-===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 255 matching lines @@
   VarList Variables;
   VarList Args;         /// subset of Variables, in argument order
   VarList ImplicitArgs; /// subset of Variables
   std::unique_ptr<ArenaAllocator<>> Allocator;
   std::unique_ptr<Liveness> Live;
   std::unique_ptr<TargetLowering> Target;
   std::unique_ptr<VariablesMetadata> VMetadata;
   std::unique_ptr<Assembler> TargetAssembler;
   /// Globals required by this CFG. Mostly used for the profiler's globals.
   std::unique_ptr<VariableDeclarationList> GlobalInits;
-  std::vector<InstJumpTable *> JumpTables;
+  CfgVector<InstJumpTable *> JumpTables;
 
   /// CurrentNode is maintained during dumping/emitting just for validating
   /// Variable::DefNode. Normally, a traversal over CfgNodes maintains this, but
   /// before global operations like register allocation, resetCurrentNode()
   /// should be called to avoid spurious validation failures.
   const CfgNode *CurrentNode = nullptr;
 
   /// Maintain a pointer in TLS to the current Cfg being translated. This is
   /// primarily for accessing its allocator statelessly, but other uses are
   /// possible.
   ICE_TLS_DECLARE_FIELD(const Cfg *, CurrentCfg);
 
 public:
   static void TlsInit() { ICE_TLS_INIT_FIELD(CurrentCfg); }
 };
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICECFG_H