Iasm and obj lowering for advanced switch lowering.

src/IceTargetLoweringX8664.h

 //===- subzero/src/IceTargetLoweringX8664.h - lowering for x86-64 -*- C++ -*-=//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
 /// This file declares the TargetLoweringX8664 class, which implements the
 /// TargetLowering interface for the X86 64-bit architecture.
 ///
 //===----------------------------------------------------------------------===//
 
 #ifndef SUBZERO_SRC_ICETARGETLOWERINGX8664_H
 #define SUBZERO_SRC_ICETARGETLOWERINGX8664_H
 
 #include "IceCfg.h"
 #include "IceGlobalContext.h"
 #include "IceTargetLowering.h"
 
 namespace Ice {
 
 class TargetX8664 : public TargetLowering {
   TargetX8664() = delete;
   TargetX8664(const TargetX8664 &) = delete;
   TargetX8664 &operator=(const TargetX8664 &) = delete;
 
+  void emitJumpTable(const Cfg *Func,
+                     const InstJumpTable *JumpTable) const override;
+
 public:
   static TargetX8664 *create(Cfg *Func);
 
 private:
   explicit TargetX8664(Cfg *Func) : TargetLowering(Func) {}
 };
 
 class TargetDataX8664 : public TargetDataLowering {
   TargetDataX8664() = delete;
   TargetDataX8664(const TargetDataX8664 &) = delete;
   TargetDataX8664 &operator=(const TargetDataX8664 &) = delete;
 
 public:
   ~TargetDataX8664() override = default;
 
   static std::unique_ptr<TargetDataLowering> create(GlobalContext *Ctx) {
     return makeUnique<TargetDataX8664>(Ctx);
   }
 
   void lowerGlobals(const VariableDeclarationList &Vars,
                     const IceString &SectionSuffix) override;
 
   void lowerConstants() override;
+  void lowerJumpTables() override;
 
 private:
   ENABLE_MAKE_UNIQUE;
 
   explicit TargetDataX8664(GlobalContext *Ctx) : TargetDataLowering(Ctx) {}
 };
 
 class TargetHeaderX8664 : public TargetHeaderLowering {
   TargetHeaderX8664() = delete;
   TargetHeaderX8664(const TargetHeaderX8664 &) = delete;
   TargetHeaderX8664 &operator=(const TargetHeaderX8664 &) = delete;
 
 public:
   ~TargetHeaderX8664() = default;
 
   static std::unique_ptr<TargetHeaderLowering> create(GlobalContext *Ctx) {
     return makeUnique<TargetHeaderX8664>(Ctx);
   }
 
 private:
   ENABLE_MAKE_UNIQUE;
 
   explicit TargetHeaderX8664(GlobalContext *Ctx) : TargetHeaderLowering(Ctx) {}
 };
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICETARGETLOWERINGX8664_H