Subzero. Uses unique_ptrs in the emit queue.

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 156 matching lines @@
   /// @}
 
   /// \name Miscellaneous accessors.
   /// @{
   TargetLowering *getTarget() const { return Target.get(); }
   VariablesMetadata *getVMetadata() const { return VMetadata.get(); }
   Liveness *getLiveness() const { return Live.get(); }
   template <typename T = Assembler> T *getAssembler() const {
     return llvm::dyn_cast<T>(TargetAssembler.get());
   }
-  Assembler *releaseAssembler() { return TargetAssembler.release(); }
+  std::unique_ptr<Assembler> releaseAssembler() {
+    return std::move(TargetAssembler);
+  }
   bool hasComputedFrame() const;
   bool getFocusedTiming() const { return FocusedTiming; }
   void setFocusedTiming() { FocusedTiming = true; }
   uint32_t getConstantBlindingCookie() const { return ConstantBlindingCookie; }
   /// @}
 
   /// Returns true if Var is a global variable that is used by the profiling
   /// code.
   static bool isProfileGlobal(const VariableDeclaration &Var);
 
@@ skipping 142 matching lines @@
 
 public:
   static void TlsInit() { CfgAllocatorTraits::init(); }
 };
 
 template <> Variable *Cfg::makeVariable<Variable>(Type Ty);
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICECFG_H