Subzero. Adds x86-64 to the list of supported Subzero targets.

src/IceTargetLoweringX8664.h

-//===- subzero/src/IceTargetLoweringX8664.h - x86-64 lowering ---*- C++ -*-===//
+//===- 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.
 //
 //===----------------------------------------------------------------------===//
 //
-// This file declares the TargetLoweringX8664 class, which
-// implements the TargetLowering interface for the x86-64
-// architecture.
+// 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 "IceDefs.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;
 
 public:
-  static TargetX8664 *create(Cfg *) {
-    llvm::report_fatal_error("Not yet implemented");
-  }
+  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) {
-    llvm::report_fatal_error("Not yet implemented");
+    return makeUnique<TargetDataX8664>(Ctx);
   }
+
+  void lowerGlobals(const VariableDeclarationList &Vars,
+                    const IceString &SectionSuffix) override;
+
+  void lowerConstants() 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) {
-    llvm::report_fatal_error("Not yet implemented");
+    return makeUnique<TargetHeaderX8664>(Ctx);
   }
+
+private:
+  ENABLE_MAKE_UNIQUE;
+
+  explicit TargetHeaderX8664(GlobalContext *Ctx) : TargetHeaderLowering(Ctx) {}
 };
-
 } // end of namespace Ice
 
-#endif // SUBZERO_SRC_ICETARGETLOWERINGX8664_H
+#endif  // SUBZERO_SRC_ICETARGETLOWERINGX8664_H