Refactor all instances of `typedef y x` to the C++11 `using x = y` syntax.

src/IceGlobalContext.h

 //===- subzero/src/IceGlobalContext.h - Global context 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 429 matching lines @@
   // Try to ensure mutexes are allocated on separate cache lines.
 
   // Destructors collaborate with Allocator
   ICE_CACHELINE_BOUNDARY;
   // Managed by getAllocator()
   GlobalLockType AllocLock;
   ArenaAllocator<> Allocator;
 
   ICE_CACHELINE_BOUNDARY;
   // Managed by getDestructors()
-  typedef std::vector<std::function<void()>> DestructorArray;
+  using DestructorArray = std::vector<std::function<void()>>;
   GlobalLockType DestructorsLock;
   DestructorArray Destructors;
 
   ICE_CACHELINE_BOUNDARY;
   // Managed by getConstantPool()
   GlobalLockType ConstPoolLock;
   std::unique_ptr<ConstantPool> ConstPool;
 
   ICE_CACHELINE_BOUNDARY;
   // Managed by getJumpTableList()
@@ skipping 10 matching lines @@
   GlobalLockType StatsLock;
   CodeStats StatsCumulative;
 
   ICE_CACHELINE_BOUNDARY;
   // Managed by getTimers()
   GlobalLockType TimerLock;
   TimerList Timers;
 
   ICE_CACHELINE_BOUNDARY;
   /// StrLock is a global lock on the dump and emit output streams.
-  typedef std::mutex StrLockType;
+  using StrLockType = std::mutex;
   StrLockType StrLock;
   Ostream *StrDump;  /// Stream for dumping / diagnostics
   Ostream *StrEmit;  /// Stream for code emission
   Ostream *StrError; /// Stream for logging errors.
 
   ICE_CACHELINE_BOUNDARY;
 
   Intrinsics IntrinsicsInfo;
   const ClFlags &Flags;
   // TODO(jpp): move to EmitterContext.
@@ skipping 46 matching lines @@
   }
 
   llvm::SmallVector<ThreadContext *, 128> AllThreadContexts;
   llvm::SmallVector<std::thread, 128> TranslationThreads;
   llvm::SmallVector<std::thread, 128> EmitterThreads;
   // Each thread has its own TLS pointer which is also held in
   // AllThreadContexts.
   ICE_TLS_DECLARE_FIELD(ThreadContext *, TLS);
 
   // Private helpers for mangleName()
-  typedef llvm::SmallVector<char, 32> ManglerVector;
+  using ManglerVector = llvm::SmallVector<char, 32>;
   void incrementSubstitutions(ManglerVector &OldName) const;
 
 public:
   static void TlsInit() { ICE_TLS_INIT_FIELD(TLS); }
 };
 
 /// Helper class to push and pop a timer marker.  The constructor
 /// pushes a marker, and the destructor pops it.  This is for
 /// convenient timing of regions of code.
 class TimerMarker {
@@ skipping 42 matching lines @@
   explicit OstreamLocker(GlobalContext *Ctx) : Ctx(Ctx) { Ctx->lockStr(); }
   ~OstreamLocker() { Ctx->unlockStr(); }
 
 private:
   GlobalContext *const Ctx;
 };
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICEGLOBALCONTEXT_H