--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/include/llvm/Target/TargetLoweringObjectFile.h	Thu Dec 12 13:56:28 2013 +0900
@@ -0,0 +1,157 @@
+//===-- llvm/Target/TargetLoweringObjectFile.h - Object Info ----*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements classes used to handle lowerings specific to common
+// object file formats.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TARGET_TARGETLOWERINGOBJECTFILE_H
+#define LLVM_TARGET_TARGETLOWERINGOBJECTFILE_H
+
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/IR/Module.h"
+#include "llvm/MC/MCObjectFileInfo.h"
+#include "llvm/MC/SectionKind.h"
+
+namespace llvm {
+  class MachineModuleInfo;
+  class Mangler;
+  class MCContext;
+  class MCExpr;
+  class MCSection;
+  class MCSymbol;
+  class MCSymbolRefExpr;
+  class MCStreamer;
+  class GlobalValue;
+  class TargetMachine;
+  
+class TargetLoweringObjectFile : public MCObjectFileInfo {
+  MCContext *Ctx;
+
+  TargetLoweringObjectFile(
+    const TargetLoweringObjectFile&) LLVM_DELETED_FUNCTION;
+  void operator=(const TargetLoweringObjectFile&) LLVM_DELETED_FUNCTION;
+
+public:
+  MCContext &getContext() const { return *Ctx; }
+
+  TargetLoweringObjectFile() : MCObjectFileInfo(), Ctx(0) {}
+  
+  virtual ~TargetLoweringObjectFile();
+  
+  /// Initialize - this method must be called before any actual lowering is
+  /// done.  This specifies the current context for codegen, and gives the
+  /// lowering implementations a chance to set up their default sections.
+  virtual void Initialize(MCContext &ctx, const TargetMachine &TM);
+  
+  virtual void emitPersonalityValue(MCStreamer &Streamer,
+                                    const TargetMachine &TM,
+                                    const MCSymbol *Sym) const;
+
+  /// emitModuleFlags - Emit the module flags that the platform cares about.
+  virtual void emitModuleFlags(MCStreamer &,
+                               ArrayRef<Module::ModuleFlagEntry>,
+                               Mangler *, const TargetMachine &) const {
+  }
+
+  /// shouldEmitUsedDirectiveFor - This hook allows targets to selectively
+  /// decide not to emit the UsedDirective for some symbols in llvm.used.
+  /// FIXME: REMOVE this (rdar://7071300)
+  virtual bool shouldEmitUsedDirectiveFor(const GlobalValue *GV,
+                                          Mangler *) const {
+    return GV != 0;
+  }
+  
+  /// getSectionForConstant - Given a constant with the SectionKind, return a
+  /// section that it should be placed in.
+  virtual const MCSection *getSectionForConstant(SectionKind Kind) const;
+  
+  /// getKindForGlobal - Classify the specified global variable into a set of
+  /// target independent categories embodied in SectionKind.
+  static SectionKind getKindForGlobal(const GlobalValue *GV,
+                                      const TargetMachine &TM);
+  
+  /// SectionForGlobal - This method computes the appropriate section to emit
+  /// the specified global variable or function definition.  This should not
+  /// be passed external (or available externally) globals.
+  const MCSection *SectionForGlobal(const GlobalValue *GV,
+                                    SectionKind Kind, Mangler *Mang,
+                                    const TargetMachine &TM) const;
+  
+  /// SectionForGlobal - This method computes the appropriate section to emit
+  /// the specified global variable or function definition.  This should not
+  /// be passed external (or available externally) globals.
+  const MCSection *SectionForGlobal(const GlobalValue *GV,
+                                    Mangler *Mang,
+                                    const TargetMachine &TM) const {
+    return SectionForGlobal(GV, getKindForGlobal(GV, TM), Mang, TM);
+  }
+
+  /// getExplicitSectionGlobal - Targets should implement this method to assign
+  /// a section to globals with an explicit section specfied.  The
+  /// implementation of this method can assume that GV->hasSection() is true.
+  virtual const MCSection *
+  getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind, 
+                           Mangler *Mang, const TargetMachine &TM) const = 0;
+  
+  /// getSpecialCasedSectionGlobals - Allow the target to completely override
+  /// section assignment of a global.
+  virtual const MCSection *
+  getSpecialCasedSectionGlobals(const GlobalValue *GV, Mangler *Mang,
+                                SectionKind Kind) const {
+    return 0;
+  }
+  
+  /// getTTypeGlobalReference - Return an MCExpr to use for a reference
+  /// to the specified global variable from exception handling information.
+  ///
+  virtual const MCExpr *
+  getTTypeGlobalReference(const GlobalValue *GV, Mangler *Mang,
+                          MachineModuleInfo *MMI, unsigned Encoding,
+                          MCStreamer &Streamer) const;
+
+  /// Return the MCSymbol for the specified global value.  This symbol is the
+  /// main label that is the address of the global
+  MCSymbol *getSymbol(Mangler &M, const GlobalValue *GV) const;
+
+  // getCFIPersonalitySymbol - The symbol that gets passed to .cfi_personality.
+  virtual MCSymbol *
+  getCFIPersonalitySymbol(const GlobalValue *GV, Mangler *Mang,
+                          MachineModuleInfo *MMI) const;
+
+  /// 
+  const MCExpr *
+  getTTypeReference(const MCSymbolRefExpr *Sym, unsigned Encoding,
+                    MCStreamer &Streamer) const;
+
+  virtual const MCSection *
+  getStaticCtorSection(unsigned Priority = 65535) const {
+    (void)Priority;
+    return StaticCtorSection;
+  }
+  virtual const MCSection *
+  getStaticDtorSection(unsigned Priority = 65535) const {
+    (void)Priority;
+    return StaticDtorSection;
+  }
+
+  /// \brief Create a symbol reference to describe the given TLS variable when
+  /// emitting the address in debug info.
+  virtual const MCExpr *getDebugThreadLocalSymbol(const MCSymbol *Sym) const;
+
+protected:
+  virtual const MCSection *
+  SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
+                         Mangler *Mang, const TargetMachine &TM) const;
+};
+
+} // end namespace llvm
+
+#endif