[llvm-commits] [llvm] r62199 - in /llvm/trunk: include/llvm/CodeGen/MachineModuleInfo.h lib/CodeGen/AsmPrinter/DwarfWriter.cpp lib/CodeGen/MachineModuleInfo.cpp lib/CodeGen/SelectionDAG/SelectionDAG.cpp

John Criswell criswell at cs.uiuc.edu
Wed Jan 14 11:10:49 PST 2009


Dear Devang,

Have these classes been moved or replaced? If replaced, what has
replaced them?

I have some code from Edwin Torok that I'm using which currently relies
upon these Debug Info classes.

-- John T.

Devang Patel wrote:
> Author: dpatel
> Date: Tue Jan 13 17:54:55 2009
> New Revision: 62199
>
> URL: http://llvm.org/viewvc/llvm-project?rev=62199&view=rev
> Log:
> Removoe MachineModuleInfo methods (and related DebugInfoDesc class  hierarchy) that were used to handle debug info.
>
> Modified:
>     llvm/trunk/include/llvm/CodeGen/MachineModuleInfo.h
>     llvm/trunk/lib/CodeGen/AsmPrinter/DwarfWriter.cpp
>     llvm/trunk/lib/CodeGen/MachineModuleInfo.cpp
>     llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
>
> Modified: llvm/trunk/include/llvm/CodeGen/MachineModuleInfo.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/CodeGen/MachineModuleInfo.h?rev=62199&r1=62198&r2=62199&view=diff
>
> ==============================================================================
> --- llvm/trunk/include/llvm/CodeGen/MachineModuleInfo.h (original)
> +++ llvm/trunk/include/llvm/CodeGen/MachineModuleInfo.h Tue Jan 13 17:54:55 2009
> @@ -47,7 +47,6 @@
>  //===----------------------------------------------------------------------===//
>  // Forward declarations.
>  class Constant;
> -class DebugInfoDesc;
>  class GlobalVariable;
>  class MachineBasicBlock;
>  class MachineFunction;
> @@ -67,787 +66,6 @@
>  };
>
>  //===----------------------------------------------------------------------===//
> -/// DIVisitor - Subclasses of this class apply steps to each of the fields in
> -/// the supplied DebugInfoDesc.
> -class DIVisitor {
> -public:
> -  DIVisitor() {}
> -  virtual ~DIVisitor() {}
> -
> -  /// ApplyToFields - Target the visitor to each field of the debug information
> -  /// descriptor.
> -  void ApplyToFields(DebugInfoDesc *DD);
> -
> -  /// Apply - Subclasses override each of these methods to perform the
> -  /// appropriate action for the type of field.
> -  virtual void Apply(int &Field) = 0;
> -  virtual void Apply(unsigned &Field) = 0;
> -  virtual void Apply(int64_t &Field) = 0;
> -  virtual void Apply(uint64_t &Field) = 0;
> -  virtual void Apply(bool &Field) = 0;
> -  virtual void Apply(std::string &Field) = 0;
> -  virtual void Apply(DebugInfoDesc *&Field) = 0;
> -  virtual void Apply(GlobalVariable *&Field) = 0;
> -  virtual void Apply(std::vector<DebugInfoDesc *> &Field) = 0;
> -};
> -
> -//===----------------------------------------------------------------------===//
> -/// DebugInfoDesc - This class is the base class for debug info descriptors.
> -///
> -class DebugInfoDesc {
> -private:
> -  unsigned Tag;                         // Content indicator.  Dwarf values are
> -                                        // used but that does not limit use to
> -                                        // Dwarf writers.
> -
> -protected:
> -  explicit DebugInfoDesc(unsigned T) : Tag(T | LLVMDebugVersion) {}
> -
> -public:
> -  virtual ~DebugInfoDesc() {}
> -
> -  // Accessors
> -  unsigned getTag()          const { return Tag & ~LLVMDebugVersionMask; }
> -  unsigned getVersion()      const { return Tag &  LLVMDebugVersionMask; }
> -  void setTag(unsigned T)          { Tag = T | LLVMDebugVersion; }
> -
> -  /// TagFromGlobal - Returns the tag number from a debug info descriptor
> -  /// GlobalVariable.   Return DIIValid if operand is not an unsigned int.
> -  static unsigned TagFromGlobal(GlobalVariable *GV);
> -
> -  /// VersionFromGlobal - Returns the version number from a debug info
> -  /// descriptor GlobalVariable.  Return DIIValid if operand is not an unsigned
> -  /// int.
> -  static unsigned VersionFromGlobal(GlobalVariable *GV);
> -
> -  /// DescFactory - Create an instance of debug info descriptor based on Tag.
> -  /// Return NULL if not a recognized Tag.
> -  static DebugInfoDesc *DescFactory(unsigned Tag);
> -
> -  /// getLinkage - get linkage appropriate for this type of descriptor.
> -  ///
> -  virtual GlobalValue::LinkageTypes getLinkage() const;
> -
> -  //===--------------------------------------------------------------------===//
> -  // Subclasses should supply the following static methods.
> -
> -  // Implement isa/cast/dyncast.
> -  static bool classof(const DebugInfoDesc *) { return true; }
> -
> -  //===--------------------------------------------------------------------===//
> -  // Subclasses should supply the following virtual methods.
> -
> -  /// ApplyToFields - Target the vistor to the fields of the descriptor.
> -  ///
> -  virtual void ApplyToFields(DIVisitor *Visitor);
> -
> -  /// getDescString - Return a string used to compose global names and labels.
> -  ///
> -  virtual const char *getDescString() const = 0;
> -
> -  /// getTypeString - Return a string used to label this descriptor's type.
> -  ///
> -  virtual const char *getTypeString() const = 0;
> -
> -#ifndef NDEBUG
> -  virtual void dump() = 0;
> -#endif
> -};
> -
> -//===----------------------------------------------------------------------===//
> -/// AnchorDesc - Descriptors of this class act as markers for identifying
> -/// descriptors of certain groups.
> -class AnchoredDesc;
> -class AnchorDesc : public DebugInfoDesc {
> -private:
> -  unsigned AnchorTag;                   // Tag number of descriptors anchored
> -                                        // by this object.
> -
> -public:
> -  AnchorDesc();
> -  explicit AnchorDesc(AnchoredDesc *D);
> -
> -  // Accessors
> -  unsigned getAnchorTag() const { return AnchorTag; }
> -
> -  // Implement isa/cast/dyncast.
> -  static bool classof(const AnchorDesc *) { return true; }
> -  static bool classof(const DebugInfoDesc *D);
> -
> -  /// getLinkage - get linkage appropriate for this type of descriptor.
> -  ///
> -  virtual GlobalValue::LinkageTypes getLinkage() const;
> -
> -  /// ApplyToFields - Target the visitor to the fields of the AnchorDesc.
> -  ///
> -  virtual void ApplyToFields(DIVisitor *Visitor);
> -
> -  /// getDescString - Return a string used to compose global names and labels.
> -  ///
> -  virtual const char *getDescString() const;
> -
> -  /// getTypeString - Return a string used to label this descriptor's type.
> -  ///
> -  virtual const char *getTypeString() const;
> -
> -#ifndef NDEBUG
> -  virtual void dump();
> -#endif
> -};
> -
> -//===----------------------------------------------------------------------===//
> -/// AnchoredDesc - This class manages anchors for a variety of top level
> -/// descriptors.
> -class AnchoredDesc : public DebugInfoDesc {
> -private:
> -  DebugInfoDesc *Anchor;                // Anchor for all descriptors of the
> -                                        // same type.
> -
> -protected:
> -
> -  explicit AnchoredDesc(unsigned T);
> -
> -public:
> -  // Accessors.
> -  AnchorDesc *getAnchor() const { return static_cast<AnchorDesc *>(Anchor); }
> -  void setAnchor(AnchorDesc *A) { Anchor = static_cast<DebugInfoDesc *>(A); }
> -
> -  //===--------------------------------------------------------------------===//
> -  // Subclasses should supply the following virtual methods.
> -
> -  /// getAnchorString - Return a string used to label descriptor's anchor.
> -  ///
> -  virtual const char *getAnchorString() const = 0;
> -
> -  /// ApplyToFields - Target the visitor to the fields of the AnchoredDesc.
> -  ///
> -  virtual void ApplyToFields(DIVisitor *Visitor);
> -};
> -
> -//===----------------------------------------------------------------------===//
> -/// CompileUnitDesc - This class packages debug information associated with a
> -/// source/header file.
> -class CompileUnitDesc : public AnchoredDesc {
> -private:
> -  unsigned Language;                    // Language number (ex. DW_LANG_C89.)
> -  std::string FileName;                 // Source file name.
> -  std::string Directory;                // Source file directory.
> -  std::string Producer;                 // Compiler string.
> -
> -public:
> -  CompileUnitDesc();
> -
> -
> -  // Accessors
> -  unsigned getLanguage()                  const { return Language; }
> -  const std::string &getFileName()        const { return FileName; }
> -  const std::string &getDirectory()       const { return Directory; }
> -  const std::string &getProducer()        const { return Producer; }
> -  void setLanguage(unsigned L)                  { Language = L; }
> -  void setFileName(const std::string &FN)       { FileName = FN; }
> -  void setDirectory(const std::string &D)       { Directory = D; }
> -  void setProducer(const std::string &P)        { Producer = P; }
> -
> -  // FIXME - Need translation unit getter/setter.
> -
> -  // Implement isa/cast/dyncast.
> -  static bool classof(const CompileUnitDesc *) { return true; }
> -  static bool classof(const DebugInfoDesc *D);
> -
> -  /// ApplyToFields - Target the visitor to the fields of the CompileUnitDesc.
> -  ///
> -  virtual void ApplyToFields(DIVisitor *Visitor);
> -
> -  /// getDescString - Return a string used to compose global names and labels.
> -  ///
> -  virtual const char *getDescString() const;
> -
> -  /// getTypeString - Return a string used to label this descriptor's type.
> -  ///
> -  virtual const char *getTypeString() const;
> -
> -  /// getAnchorString - Return a string used to label this descriptor's anchor.
> -  ///
> -  static const char *const AnchorString;
> -  virtual const char *getAnchorString() const;
> -
> -#ifndef NDEBUG
> -  virtual void dump();
> -#endif
> -};
> -
> -//===----------------------------------------------------------------------===//
> -/// TypeDesc - This class packages debug information associated with a type.
> -///
> -class TypeDesc : public DebugInfoDesc {
> -private:
> -  enum {
> -    FlagPrivate    = 1 << 0,
> -    FlagProtected  = 1 << 1,
> -    FlagFwdDecl    = 1 << 2
> -  };
> -  DebugInfoDesc *Context;               // Context debug descriptor.
> -  std::string Name;                     // Type name (may be empty.)
> -  DebugInfoDesc *File;                  // Defined compile unit (may be NULL.)
> -  unsigned Line;                        // Defined line# (may be zero.)
> -  uint64_t Size;                        // Type bit size (may be zero.)
> -  uint64_t Align;                       // Type bit alignment (may be zero.)
> -  uint64_t Offset;                      // Type bit offset (may be zero.)
> -
> -protected:
> -  unsigned Flags;                       // Miscellaneous flags.
> -
> -public:
> -  explicit TypeDesc(unsigned T);
> -
> -  // Accessors
> -  DebugInfoDesc *getContext()                const { return Context; }
> -  const std::string &getName()               const { return Name; }
> -  CompileUnitDesc *getFile() const {
> -    return static_cast<CompileUnitDesc *>(File);
> -  }
> -  unsigned getLine()                         const { return Line; }
> -  uint64_t getSize()                         const { return Size; }
> -  uint64_t getAlign()                        const { return Align; }
> -  uint64_t getOffset()                       const { return Offset; }
> -  bool isPrivate() const {
> -    return (Flags & FlagPrivate) != 0;
> -  }
> -  bool isProtected() const {
> -    return (Flags & FlagProtected) != 0;
> -  }
> -  bool isForwardDecl() const {
> -    return (Flags & FlagFwdDecl) != 0;
> -  }
> -  void setContext(DebugInfoDesc *C)                { Context = C; }
> -  void setName(const std::string &N)               { Name = N; }
> -  void setFile(CompileUnitDesc *U) {
> -    File = static_cast<DebugInfoDesc *>(U);
> -  }
> -  void setLine(unsigned L)                         { Line = L; }
> -  void setSize(uint64_t S)                         { Size = S; }
> -  void setAlign(uint64_t A)                        { Align = A; }
> -  void setOffset(uint64_t O)                       { Offset = O; }
> -  void setIsPrivate()                              { Flags |= FlagPrivate; }
> -  void setIsProtected()                            { Flags |= FlagProtected; }
> -  void setIsForwardDecl()                          { Flags |= FlagFwdDecl; }
> -
> -  /// ApplyToFields - Target the visitor to the fields of the TypeDesc.
> -  ///
> -  virtual void ApplyToFields(DIVisitor *Visitor);
> -
> -  /// getDescString - Return a string used to compose global names and labels.
> -  ///
> -  virtual const char *getDescString() const;
> -
> -  /// getTypeString - Return a string used to label this descriptor's type.
> -  ///
> -  virtual const char *getTypeString() const;
> -
> -#ifndef NDEBUG
> -  virtual void dump();
> -#endif
> -};
> -
> -//===----------------------------------------------------------------------===//
> -/// BasicTypeDesc - This class packages debug information associated with a
> -/// basic type (eg. int, bool, double.)
> -class BasicTypeDesc : public TypeDesc {
> -private:
> -  unsigned Encoding;                    // Type encoding.
> -
> -public:
> -  BasicTypeDesc();
> -
> -  // Accessors
> -  unsigned getEncoding()                     const { return Encoding; }
> -  void setEncoding(unsigned E)                     { Encoding = E; }
> -
> -  // Implement isa/cast/dyncast.
> -  static bool classof(const BasicTypeDesc *) { return true; }
> -  static bool classof(const DebugInfoDesc *D);
> -
> -  /// ApplyToFields - Target the visitor to the fields of the BasicTypeDesc.
> -  ///
> -  virtual void ApplyToFields(DIVisitor *Visitor);
> -
> -  /// getDescString - Return a string used to compose global names and labels.
> -  ///
> -  virtual const char *getDescString() const;
> -
> -  /// getTypeString - Return a string used to label this descriptor's type.
> -  ///
> -  virtual const char *getTypeString() const;
> -
> -#ifndef NDEBUG
> -  virtual void dump();
> -#endif
> -};
> -
> -
> -//===----------------------------------------------------------------------===//
> -/// DerivedTypeDesc - This class packages debug information associated with a
> -/// derived types (eg., typedef, pointer, reference.)
> -class DerivedTypeDesc : public TypeDesc {
> -private:
> -  DebugInfoDesc *FromType;              // Type derived from.
> -
> -public:
> -  explicit DerivedTypeDesc(unsigned T);
> -
> -  // Accessors
> -  TypeDesc *getFromType() const {
> -    return static_cast<TypeDesc *>(FromType);
> -  }
> -  void setFromType(TypeDesc *F) {
> -    FromType = static_cast<DebugInfoDesc *>(F);
> -  }
> -
> -  // Implement isa/cast/dyncast.
> -  static bool classof(const DerivedTypeDesc *) { return true; }
> -  static bool classof(const DebugInfoDesc *D);
> -
> -  /// ApplyToFields - Target the visitor to the fields of the DerivedTypeDesc.
> -  ///
> -  virtual void ApplyToFields(DIVisitor *Visitor);
> -
> -  /// getDescString - Return a string used to compose global names and labels.
> -  ///
> -  virtual const char *getDescString() const;
> -
> -  /// getTypeString - Return a string used to label this descriptor's type.
> -  ///
> -  virtual const char *getTypeString() const;
> -
> -#ifndef NDEBUG
> -  virtual void dump();
> -#endif
> -};
> -
> -//===----------------------------------------------------------------------===//
> -/// CompositeTypeDesc - This class packages debug information associated with a
> -/// array/struct types (eg., arrays, struct, union, enums.)
> -class CompositeTypeDesc : public DerivedTypeDesc {
> -private:
> -  std::vector<DebugInfoDesc *> Elements;// Information used to compose type.
> -
> -public:
> -  explicit CompositeTypeDesc(unsigned T);
> -
> -  // Accessors
> -  std::vector<DebugInfoDesc *> &getElements() { return Elements; }
> -
> -  // Implement isa/cast/dyncast.
> -  static bool classof(const CompositeTypeDesc *) { return true; }
> -  static bool classof(const DebugInfoDesc *D);
> -
> -  /// ApplyToFields - Target the visitor to the fields of the CompositeTypeDesc.
> -  ///
> -  virtual void ApplyToFields(DIVisitor *Visitor);
> -
> -  /// getDescString - Return a string used to compose global names and labels.
> -  ///
> -  virtual const char *getDescString() const;
> -
> -  /// getTypeString - Return a string used to label this descriptor's type.
> -  ///
> -  virtual const char *getTypeString() const;
> -
> -#ifndef NDEBUG
> -  virtual void dump();
> -#endif
> -};
> -
> -//===----------------------------------------------------------------------===//
> -/// SubrangeDesc - This class packages debug information associated with integer
> -/// value ranges.
> -class SubrangeDesc : public DebugInfoDesc {
> -private:
> -  int64_t Lo;                           // Low value of range.
> -  int64_t Hi;                           // High value of range.
> -
> -public:
> -  SubrangeDesc();
> -
> -  // Accessors
> -  int64_t getLo()                            const { return Lo; }
> -  int64_t getHi()                            const { return Hi; }
> -  void setLo(int64_t L)                            { Lo = L; }
> -  void setHi(int64_t H)                            { Hi = H; }
> -
> -  // Implement isa/cast/dyncast.
> -  static bool classof(const SubrangeDesc *) { return true; }
> -  static bool classof(const DebugInfoDesc *D);
> -
> -  /// ApplyToFields - Target the visitor to the fields of the SubrangeDesc.
> -  ///
> -  virtual void ApplyToFields(DIVisitor *Visitor);
> -
> -  /// getDescString - Return a string used to compose global names and labels.
> -  ///
> -  virtual const char *getDescString() const;
> -
> -  /// getTypeString - Return a string used to label this descriptor's type.
> -  ///
> -  virtual const char *getTypeString() const;
> -
> -#ifndef NDEBUG
> -  virtual void dump();
> -#endif
> -};
> -
> -//===----------------------------------------------------------------------===//
> -/// EnumeratorDesc - This class packages debug information associated with
> -/// named integer constants.
> -class EnumeratorDesc : public DebugInfoDesc {
> -private:
> -  std::string Name;                     // Enumerator name.
> -  int64_t Value;                        // Enumerator value.
> -
> -public:
> -  EnumeratorDesc();
> -
> -  // Accessors
> -  const std::string &getName()               const { return Name; }
> -  int64_t getValue()                         const { return Value; }
> -  void setName(const std::string &N)               { Name = N; }
> -  void setValue(int64_t V)                         { Value = V; }
> -
> -  // Implement isa/cast/dyncast.
> -  static bool classof(const EnumeratorDesc *) { return true; }
> -  static bool classof(const DebugInfoDesc *D);
> -
> -  /// ApplyToFields - Target the visitor to the fields of the EnumeratorDesc.
> -  ///
> -  virtual void ApplyToFields(DIVisitor *Visitor);
> -
> -  /// getDescString - Return a string used to compose global names and labels.
> -  ///
> -  virtual const char *getDescString() const;
> -
> -  /// getTypeString - Return a string used to label this descriptor's type.
> -  ///
> -  virtual const char *getTypeString() const;
> -
> -#ifndef NDEBUG
> -  virtual void dump();
> -#endif
> -};
> -
> -//===----------------------------------------------------------------------===//
> -/// VariableDesc - This class packages debug information associated with a
> -/// subprogram variable.
> -///
> -class VariableDesc : public DebugInfoDesc {
> -private:
> -  DebugInfoDesc *Context;               // Context debug descriptor.
> -  std::string Name;                     // Type name (may be empty.)
> -  DebugInfoDesc *File;                  // Defined compile unit (may be NULL.)
> -  unsigned Line;                        // Defined line# (may be zero.)
> -  DebugInfoDesc *TyDesc;                // Type of variable.
> -
> -public:
> -  explicit VariableDesc(unsigned T);
> -
> -  // Accessors
> -  DebugInfoDesc *getContext()                const { return Context; }
> -  const std::string &getName()               const { return Name; }
> -  CompileUnitDesc *getFile() const {
> -    return static_cast<CompileUnitDesc *>(File);
> -  }
> -  unsigned getLine()                         const { return Line; }
> -  TypeDesc *getType() const {
> -    return static_cast<TypeDesc *>(TyDesc);
> -  }
> -  void setContext(DebugInfoDesc *C)                { Context = C; }
> -  void setName(const std::string &N)               { Name = N; }
> -  void setFile(CompileUnitDesc *U) {
> -    File = static_cast<DebugInfoDesc *>(U);
> -  }
> -  void setLine(unsigned L)                         { Line = L; }
> -  void setType(TypeDesc *T) {
> -    TyDesc = static_cast<DebugInfoDesc *>(T);
> -  }
> -
> -  // Implement isa/cast/dyncast.
> -  static bool classof(const VariableDesc *) { return true; }
> -  static bool classof(const DebugInfoDesc *D);
> -
> -  /// ApplyToFields - Target the visitor to the fields of the VariableDesc.
> -  ///
> -  virtual void ApplyToFields(DIVisitor *Visitor);
> -
> -  /// getDescString - Return a string used to compose global names and labels.
> -  ///
> -  virtual const char *getDescString() const;
> -
> -  /// getTypeString - Return a string used to label this descriptor's type.
> -  ///
> -  virtual const char *getTypeString() const;
> -
> -#ifndef NDEBUG
> -  virtual void dump();
> -#endif
> -};
> -
> -//===----------------------------------------------------------------------===//
> -/// GlobalDesc - This class is the base descriptor for global functions and
> -/// variables.
> -class GlobalDesc : public AnchoredDesc {
> -private:
> -  DebugInfoDesc *Context;               // Context debug descriptor.
> -  std::string Name;                     // Global name.
> -  std::string FullName;                 // Fully qualified name.
> -  std::string LinkageName;              // Name for binding to MIPS linkage.
> -  DebugInfoDesc *File;                  // Defined compile unit (may be NULL.)
> -  unsigned Line;                        // Defined line# (may be zero.)
> -  DebugInfoDesc *TyDesc;                // Type debug descriptor.
> -  bool IsStatic;                        // Is the global a static.
> -  bool IsDefinition;                    // Is the global defined in context.
> -
> -protected:
> -  explicit GlobalDesc(unsigned T);
> -
> -public:
> -  // Accessors
> -  DebugInfoDesc *getContext()                const { return Context; }
> -  const std::string &getName()               const { return Name; }
> -  const std::string &getFullName()           const { return FullName; }
> -  const std::string &getLinkageName()        const { return LinkageName; }
> -  CompileUnitDesc *getFile() const {
> -    return static_cast<CompileUnitDesc *>(File);
> -  }
> -  unsigned getLine()                         const { return Line; }
> -  TypeDesc *getType() const {
> -    return static_cast<TypeDesc *>(TyDesc);
> -  }
> -  bool isStatic()                            const { return IsStatic; }
> -  bool isDefinition()                        const { return IsDefinition; }
> -  void setContext(DebugInfoDesc *C)                { Context = C; }
> -  void setName(const std::string &N)               { Name = N; }
> -  void setFullName(const std::string &N)           { FullName = N; }
> -  void setLinkageName(const std::string &N)        { LinkageName = N; }
> -  void setFile(CompileUnitDesc *U) {
> -    File = static_cast<DebugInfoDesc *>(U);
> -  }
> -  void setLine(unsigned L)                         { Line = L; }
> -  void setType(TypeDesc *T) {
> -    TyDesc = static_cast<DebugInfoDesc *>(T);
> -  }
> -  void setIsStatic(bool IS)                        { IsStatic = IS; }
> -  void setIsDefinition(bool ID)                    { IsDefinition = ID; }
> -
> -  /// ApplyToFields - Target the visitor to the fields of the GlobalDesc.
> -  ///
> -  virtual void ApplyToFields(DIVisitor *Visitor);
> -};
> -
> -//===----------------------------------------------------------------------===//
> -/// GlobalVariableDesc - This class packages debug information associated with a
> -/// GlobalVariable.
> -class GlobalVariableDesc : public GlobalDesc {
> -private:
> -  GlobalVariable *Global;               // llvm global.
> -
> -public:
> -  GlobalVariableDesc();
> -
> -  // Accessors.
> -  GlobalVariable *getGlobalVariable()        const { return Global; }
> -  void setGlobalVariable(GlobalVariable *GV)       { Global = GV; }
> -
> -  // Implement isa/cast/dyncast.
> -  static bool classof(const GlobalVariableDesc *) { return true; }
> -  static bool classof(const DebugInfoDesc *D);
> -
> -  /// ApplyToFields - Target the visitor to the fields of the
> -  /// GlobalVariableDesc.
> -  virtual void ApplyToFields(DIVisitor *Visitor);
> -
> -  /// getDescString - Return a string used to compose global names and labels.
> -  ///
> -  virtual const char *getDescString() const;
> -
> -  /// getTypeString - Return a string used to label this descriptor's type.
> -  ///
> -  virtual const char *getTypeString() const;
> -
> -  /// getAnchorString - Return a string used to label this descriptor's anchor.
> -  ///
> -  static const char *const AnchorString;
> -  virtual const char *getAnchorString() const;
> -
> -#ifndef NDEBUG
> -  virtual void dump();
> -#endif
> -};
> -
> -//===----------------------------------------------------------------------===//
> -/// SubprogramDesc - This class packages debug information associated with a
> -/// subprogram/function.
> -class SubprogramDesc : public GlobalDesc {
> -private:
> -
> -public:
> -  SubprogramDesc();
> -
> -  // Accessors
> -
> -  // Implement isa/cast/dyncast.
> -  static bool classof(const SubprogramDesc *) { return true; }
> -  static bool classof(const DebugInfoDesc *D);
> -
> -  /// ApplyToFields - Target the visitor to the fields of the SubprogramDesc.
> -  ///
> -  virtual void ApplyToFields(DIVisitor *Visitor);
> -
> -  /// getDescString - Return a string used to compose global names and labels.
> -  ///
> -  virtual const char *getDescString() const;
> -
> -  /// getTypeString - Return a string used to label this descriptor's type.
> -  ///
> -  virtual const char *getTypeString() const;
> -
> -  /// getAnchorString - Return a string used to label this descriptor's anchor.
> -  ///
> -  static const char *const AnchorString;
> -  virtual const char *getAnchorString() const;
> -
> -#ifndef NDEBUG
> -  virtual void dump();
> -#endif
> -};
> -
> -//===----------------------------------------------------------------------===//
> -/// BlockDesc - This descriptor groups variables and blocks nested in a block.
> -///
> -class BlockDesc : public DebugInfoDesc {
> -private:
> -  DebugInfoDesc *Context;               // Context debug descriptor.
> -
> -public:
> -  BlockDesc();
> -
> -  // Accessors
> -  DebugInfoDesc *getContext()                const { return Context; }
> -  void setContext(DebugInfoDesc *C)                { Context = C; }
> -
> -  // Implement isa/cast/dyncast.
> -  static bool classof(const BlockDesc *) { return true; }
> -  static bool classof(const DebugInfoDesc *D);
> -
> -  /// ApplyToFields - Target the visitor to the fields of the BlockDesc.
> -  ///
> -  virtual void ApplyToFields(DIVisitor *Visitor);
> -
> -  /// getDescString - Return a string used to compose global names and labels.
> -  ///
> -  virtual const char *getDescString() const;
> -
> -  /// getTypeString - Return a string used to label this descriptor's type.
> -  ///
> -  virtual const char *getTypeString() const;
> -
> -#ifndef NDEBUG
> -  virtual void dump();
> -#endif
> -};
> -
> -//===----------------------------------------------------------------------===//
> -/// DIDeserializer - This class is responsible for casting GlobalVariables
> -/// into DebugInfoDesc objects.
> -class DIDeserializer {
> -  // Previously defined gloabls.
> -  std::map<GlobalVariable*, DebugInfoDesc*> GlobalDescs;
> -public:
> -  const std::map<GlobalVariable *, DebugInfoDesc *> &getGlobalDescs() const {
> -    return GlobalDescs;
> -  }
> -
> -  /// Deserialize - Reconstitute a GlobalVariable into it's component
> -  /// DebugInfoDesc objects.
> -  DebugInfoDesc *Deserialize(Value *V);
> -  DebugInfoDesc *Deserialize(GlobalVariable *GV);
> -};
> -
> -//===----------------------------------------------------------------------===//
> -/// DISerializer - This class is responsible for casting DebugInfoDesc objects
> -/// into GlobalVariables.
> -class DISerializer {
> -  Module *M;                            // Definition space module.
> -  PointerType *StrPtrTy;                // A "i8*" type.  Created lazily.
> -  PointerType *EmptyStructPtrTy;        // A "{ }*" type.  Created lazily.
> -
> -  // Types per Tag. Created lazily.
> -  std::map<unsigned, StructType *> TagTypes;
> -
> -  // Previously defined descriptors.
> -  DenseMap<DebugInfoDesc *, GlobalVariable *> DescGlobals;
> -
> -  // Previously defined strings.
> -  StringMap<Constant*> StringCache;
> -public:
> -  DISerializer()
> -    : M(NULL), StrPtrTy(NULL), EmptyStructPtrTy(NULL), TagTypes(),
> -      DescGlobals(), StringCache()
> -  {}
> -
> -  // Accessors
> -  Module *getModule()        const { return M; };
> -  void setModule(Module *module)  { M = module; }
> -
> -  /// getStrPtrType - Return a "i8*" type.
> -  ///
> -  const PointerType *getStrPtrType();
> -
> -  /// getEmptyStructPtrType - Return a "{ }*" type.
> -  ///
> -  const PointerType *getEmptyStructPtrType();
> -
> -  /// getTagType - Return the type describing the specified descriptor (via
> -  /// tag.)
> -  const StructType *getTagType(DebugInfoDesc *DD);
> -
> -  /// getString - Construct the string as constant string global.
> -  ///
> -  Constant *getString(const std::string &String);
> -
> -  /// Serialize - Recursively cast the specified descriptor into a
> -  /// GlobalVariable so that it can be serialized to a .bc or .ll file.
> -  GlobalVariable *Serialize(DebugInfoDesc *DD);
> -
> -  /// addDescriptor - Directly connect DD with existing GV.
> -  void addDescriptor(DebugInfoDesc *DD, GlobalVariable *GV);
> -};
> -
> -//===----------------------------------------------------------------------===//
> -/// DIVerifier - This class is responsible for verifying the given network of
> -/// GlobalVariables are valid as DebugInfoDesc objects.
> -class DIVerifier {
> -  enum {
> -    Unknown = 0,
> -    Invalid,
> -    Valid
> -  };
> -  DenseMap<GlobalVariable *, unsigned> Validity; // Tracks prior results.
> -  std::map<unsigned, unsigned> Counts; // Count of fields per Tag type.
> -public:
> -  DIVerifier()
> -    : Validity(), Counts()
> -  {}
> -
> -  /// Verify - Return true if the GlobalVariable appears to be a valid
> -  /// serialization of a DebugInfoDesc.
> -  bool Verify(Value *V);
> -  bool Verify(GlobalVariable *GV);
> -
> -  /// isVerified - Return true if the specified GV has already been
> -  /// verified as a debug information descriptor.
> -  bool isVerified(GlobalVariable *GV);
> -};
> -
> -//===----------------------------------------------------------------------===//
>  /// SourceLineInfo - This class is used to record source line correspondence.
>  ///
>  class SourceLineInfo {
> @@ -867,95 +85,6 @@
>  };
>
>  //===----------------------------------------------------------------------===//
> -/// SourceFileInfo - This class is used to track source information.
> -///
> -class SourceFileInfo {
> -  unsigned DirectoryID;                 // Directory ID number.
> -  std::string Name;                     // File name (not including directory.)
> -public:
> -  SourceFileInfo(unsigned D, const std::string &N) : DirectoryID(D), Name(N) {}
> -
> -  // Accessors
> -  unsigned getDirectoryID()    const { return DirectoryID; }
> -  const std::string &getName() const { return Name; }
> -
> -  /// operator== - Used by UniqueVector to locate entry.
> -  ///
> -  bool operator==(const SourceFileInfo &SI) const {
> -    return getDirectoryID() == SI.getDirectoryID() && getName() == SI.getName();
> -  }
> -
> -  /// operator< - Used by UniqueVector to locate entry.
> -  ///
> -  bool operator<(const SourceFileInfo &SI) const {
> -    return getDirectoryID() < SI.getDirectoryID() ||
> -          (getDirectoryID() == SI.getDirectoryID() && getName() < SI.getName());
> -  }
> -};
> -
> -//===----------------------------------------------------------------------===//
> -/// DebugVariable - This class is used to track local variable information.
> -///
> -class DebugVariable {
> -private:
> -  VariableDesc *Desc;                   // Variable Descriptor.
> -  unsigned FrameIndex;                  // Variable frame index.
> -
> -public:
> -  DebugVariable(VariableDesc *D, unsigned I)
> -  : Desc(D)
> -  , FrameIndex(I)
> -  {}
> -
> -  // Accessors.
> -  VariableDesc *getDesc()  const { return Desc; }
> -  unsigned getFrameIndex() const { return FrameIndex; }
> -};
> -
> -//===----------------------------------------------------------------------===//
> -/// DebugScope - This class is used to track scope information.
> -///
> -class DebugScope {
> -private:
> -  DebugScope *Parent;                   // Parent to this scope.
> -  DebugInfoDesc *Desc;                  // Debug info descriptor for scope.
> -                                        // Either subprogram or block.
> -  unsigned StartLabelID;                // Label ID of the beginning of scope.
> -  unsigned EndLabelID;                  // Label ID of the end of scope.
> -  std::vector<DebugScope *> Scopes;     // Scopes defined in scope.
> -  std::vector<DebugVariable *> Variables;// Variables declared in scope.
> -
> -public:
> -  DebugScope(DebugScope *P, DebugInfoDesc *D)
> -  : Parent(P)
> -  , Desc(D)
> -  , StartLabelID(0)
> -  , EndLabelID(0)
> -  , Scopes()
> -  , Variables()
> -  {}
> -  ~DebugScope();
> -
> -  // Accessors.
> -  DebugScope *getParent()        const { return Parent; }
> -  DebugInfoDesc *getDesc()       const { return Desc; }
> -  unsigned getStartLabelID()     const { return StartLabelID; }
> -  unsigned getEndLabelID()       const { return EndLabelID; }
> -  std::vector<DebugScope *> &getScopes() { return Scopes; }
> -  std::vector<DebugVariable *> &getVariables() { return Variables; }
> -  void setStartLabelID(unsigned S) { StartLabelID = S; }
> -  void setEndLabelID(unsigned E)   { EndLabelID = E; }
> -
> -  /// AddScope - Add a scope to the scope.
> -  ///
> -  void AddScope(DebugScope *S) { Scopes.push_back(S); }
> -
> -  /// AddVariable - Add a variable to the scope.
> -  ///
> -  void AddVariable(DebugVariable *V) { Variables.push_back(V); }
> -};
> -
> -//===----------------------------------------------------------------------===//
>  /// LandingPadInfo - This structure is used to retain landing pad info for
>  /// the current function.
>  ///
> @@ -981,19 +110,6 @@
>  ///
>  class MachineModuleInfo : public ImmutablePass {
>  private:
> -  // Use the same deserializer/verifier for the module.
> -  DIDeserializer DR;
> -  DIVerifier VR;
> -
> -  // CompileUnits - Uniquing vector for compile units.
> -  UniqueVector<CompileUnitDesc *> CompileUnits;
> -
> -  // Directories - Uniquing vector for directories.
> -  UniqueVector<std::string> Directories;
> -
> -  // SourceFiles - Uniquing vector for source files.
> -  UniqueVector<SourceFileInfo> SourceFiles;
> -
>    // Lines - List of of source line correspondence.
>    std::vector<SourceLineInfo> Lines;
>
> @@ -1003,13 +119,6 @@
>    // another label.
>    std::vector<unsigned> LabelIDList;
>
> -  // ScopeMap - Tracks the scopes in the current function.
> -  std::map<DebugInfoDesc *, DebugScope *> ScopeMap;
> -
> -  // RootScope - Top level scope for the current function.
> -  //
> -  DebugScope *RootScope;
> -
>    // FrameMoves - List of moves done by a function's prolog.  Used to construct
>    // frame maps by debug and exception handling consumers.
>    std::vector<MachineMove> FrameMoves;
> @@ -1067,19 +176,6 @@
>    ///
>    void EndFunction();
>
> -  /// getDescFor - Convert a Value to a debug information descriptor.
> -  ///
> -  // FIXME - use new Value type when available.
> -  DebugInfoDesc *getDescFor(Value *V);
> -
> -  /// Verify - Verify that a Value is debug information descriptor.
> -  ///
> -  bool Verify(Value *V) { return VR.Verify(V); }
> -
> -  /// isVerified - Return true if the specified GV has already been
> -  /// verified as a debug information descriptor.
> -  bool isVerified(GlobalVariable *GV) { return VR.isVerified(GV); }
> -
>    /// AnalyzeModule - Scan the module for global debug information.
>    ///
>    void AnalyzeModule(Module &M);
> @@ -1132,82 +228,12 @@
>      return LabelID ? LabelIDList[LabelID - 1] : 0;
>    }
>
> -  /// RecordSource - Register a source file with debug info. Returns an source
> -  /// ID.
> -  unsigned RecordSource(const std::string &Directory,
> -                        const std::string &Source);
> -  unsigned RecordSource(const CompileUnitDesc *CompileUnit);
> -
> -  /// getDirectories - Return the UniqueVector of std::string representing
> -  /// directories.
> -  const UniqueVector<std::string> &getDirectories() const {
> -    return Directories;
> -  }
> -
> -  /// getSourceFiles - Return the UniqueVector of source files.
> -  ///
> -  const UniqueVector<SourceFileInfo> &getSourceFiles() const {
> -    return SourceFiles;
> -  }
> -
>    /// getSourceLines - Return a vector of source lines.
>    ///
>    const std::vector<SourceLineInfo> &getSourceLines() const {
>      return Lines;
>    }
>
> -  /// SetupCompileUnits - Set up the unique vector of compile units.
> -  ///
> -  void SetupCompileUnits(Module &M);
> -
> -  /// getCompileUnits - Return a vector of debug compile units.
> -  ///
> -  const UniqueVector<CompileUnitDesc *> getCompileUnits() const;
> -
> -  /// getGlobalVariablesUsing - Return all of the GlobalVariables that use the
> -  /// named GlobalVariable.
> -  void getGlobalVariablesUsing(Module &M, const std::string &RootName,
> -                               std::vector<GlobalVariable*> &Result);
> -
> -  /// getAnchoredDescriptors - Return a vector of anchored debug descriptors.
> -  ///
> -  template <class T>
> -  void getAnchoredDescriptors(Module &M, std::vector<T*> &AnchoredDescs) {
> -    T Desc;
> -    std::vector<GlobalVariable *> Globals;
> -    getGlobalVariablesUsing(M, Desc.getAnchorString(), Globals);
> -
> -    for (unsigned i = 0, N = Globals.size(); i < N; ++i) {
> -      GlobalVariable *GV = Globals[i];
> -
> -      // FIXME - In the short term, changes are too drastic to continue.
> -      if (DebugInfoDesc::TagFromGlobal(GV) == Desc.getTag() &&
> -          DebugInfoDesc::VersionFromGlobal(GV) == LLVMDebugVersion) {
> -        AnchoredDescs.push_back(cast<T>(DR.Deserialize(GV)));
> -      }
> -    }
> -  }
> -
> -  /// RecordRegionStart - Indicate the start of a region.
> -  ///
> -  unsigned RecordRegionStart(Value *V);
> -
> -  /// RecordRegionEnd - Indicate the end of a region.
> -  ///
> -  unsigned RecordRegionEnd(Value *V);
> -
> -  /// RecordVariable - Indicate the declaration of  a local variable.
> -  ///
> -  void RecordVariable(GlobalValue *GV, unsigned FrameIndex);
> -
> -  /// getRootScope - Return current functions root scope.
> -  ///
> -  DebugScope *getRootScope() { return RootScope; }
> -
> -  /// getOrCreateScope - Returns the scope associated with the given descriptor.
> -  ///
> -  DebugScope *getOrCreateScope(DebugInfoDesc *ScopeDesc);
> -
>    /// getFrameMoves - Returns a reference to a list of moves done in the current
>    /// function's prologue.  Used to construct frame maps for debug and exception
>    /// handling comsumers.
> @@ -1294,7 +320,6 @@
>    /// of one is required to emit exception handling info.
>    Function *getPersonality() const;
>
> -  DIDeserializer *getDIDeserializer() { return &DR; }
>  }; // End class MachineModuleInfo
>
>  } // End llvm namespace
>
> Modified: llvm/trunk/lib/CodeGen/AsmPrinter/DwarfWriter.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/AsmPrinter/DwarfWriter.cpp?rev=62199&r1=62198&r2=62199&view=diff
>
> ==============================================================================
> --- llvm/trunk/lib/CodeGen/AsmPrinter/DwarfWriter.cpp (original)
> +++ llvm/trunk/lib/CodeGen/AsmPrinter/DwarfWriter.cpp Tue Jan 13 17:54:55 2009
> @@ -749,10 +749,6 @@
>  /// with a source file.
>  class CompileUnit {
>  private:
> -  /// Desc - Compile unit debug descriptor.
> -  ///
> -  CompileUnitDesc *Desc;
> -
>    /// ID - File identifier for source.
>    ///
>    unsigned ID;
> @@ -761,14 +757,12 @@
>    ///
>    DIE *Die;
>
> -  /// DescToDieMap - Tracks the mapping of unit level debug informaton
> -  /// descriptors to debug information entries.
> -  std::map<DebugInfoDesc *, DIE *> DescToDieMap;
> +  /// GVToDieMap - Tracks the mapping of unit level debug informaton
> +  /// variables to debug information entries.
>    DenseMap<GlobalVariable *, DIE *> GVToDieMap;
>
> -  /// DescToDIEntryMap - Tracks the mapping of unit level debug informaton
> +  /// GVToDIEntryMap - Tracks the mapping of unit level debug informaton
>    /// descriptors to debug information entries using a DIEntry proxy.
> -  std::map<DebugInfoDesc *, DIEntry *> DescToDIEntryMap;
>    DenseMap<GlobalVariable *, DIEntry *> GVToDIEntryMap;
>
>    /// Globals - A map of globally visible named entities for this unit.
> @@ -785,23 +779,10 @@
>
>  public:
>    CompileUnit(unsigned I, DIE *D)
> -    : ID(I), Die(D), DescToDieMap(), GVToDieMap(), DescToDIEntryMap(),
> +    : ID(I), Die(D), GVToDieMap(),
>        GVToDIEntryMap(), Globals(), DiesSet(InitDiesSetSize), Dies()
>    {}
>
> -  CompileUnit(CompileUnitDesc *CUD, unsigned I, DIE *D)
> -  : Desc(CUD)
> -  , ID(I)
> -  , Die(D)
> -  , DescToDieMap()
> -  , GVToDieMap()
> -  , DescToDIEntryMap()
> -  , GVToDIEntryMap()
> -  , Globals()
> -  , DiesSet(InitDiesSetSize)
> -  , Dies()
> -  {}
> -
>    ~CompileUnit() {
>      delete Die;
>
> @@ -810,7 +791,6 @@
>    }
>
>    // Accessors.
> -  CompileUnitDesc *getDesc() const { return Desc; }
>    unsigned getID()           const { return ID; }
>    DIE* getDie()              const { return Die; }
>    std::map<std::string, DIE *> &getGlobals() { return Globals; }
> @@ -828,19 +808,13 @@
>    }
>
>    /// getDieMapSlotFor - Returns the debug information entry map slot for the
> -  /// specified debug descriptor.
> -  DIE *&getDieMapSlotFor(DebugInfoDesc *DID) {
> -    return DescToDieMap[DID];
> -  }
> +  /// specified debug variable.
>    DIE *&getDieMapSlotFor(GlobalVariable *GV) {
>      return GVToDieMap[GV];
>    }
>
>    /// getDIEntrySlotFor - Returns the debug information entry proxy slot for the
> -  /// specified debug descriptor.
> -  DIEntry *&getDIEntrySlotFor(DebugInfoDesc *DID) {
> -    return DescToDIEntryMap[DID];
> -  }
> +  /// specified debug variable.
>    DIEntry *&getDIEntrySlotFor(GlobalVariable *GV) {
>      return GVToDIEntryMap[GV];
>    }
> @@ -1204,7 +1178,7 @@
>
>    /// operator== - Used by UniqueVector to locate entry.
>    ///
> -  bool operator==(const SourceFileInfo &SI) const {
> +  bool operator==(const SrcFileInfo &SI) const {
>      return getDirectoryID() == SI.getDirectoryID() && getName() == SI.getName();
>    }
>
> @@ -1317,10 +1291,6 @@
>    ///
>    UniqueVector<std::string> StringPool;
>
> -  /// UnitMap - Map debug information descriptor to compile unit.
> -  ///
> -  std::map<DebugInfoDesc *, CompileUnit *> DescToUnitMap;
> -
>    /// SectionMap - Provides a unique id per text section.
>    ///
>    UniqueVector<const Section*> SectionMap;
> @@ -1574,17 +1544,6 @@
>
>    /// AddSourceLine - Add location information to specified debug information
>    /// entry.
> -  void AddSourceLine(DIE *Die, CompileUnitDesc *File, unsigned Line) {
> -    if (File && Line) {
> -      CompileUnit *FileUnit = FindCompileUnit(File);
> -      unsigned FileID = FileUnit->getID();
> -      AddUInt(Die, DW_AT_decl_file, 0, FileID);
> -      AddUInt(Die, DW_AT_decl_line, 0, Line);
> -    }
> -  }
> -
> -  /// AddSourceLine - Add location information to specified debug information
> -  /// entry.
>    void AddSourceLine(DIE *Die, DIVariable *V) {
>      unsigned FileID = 0;
>      unsigned Line = V->getLineNumber();
> @@ -1690,46 +1649,6 @@
>    }
>
>    /// AddType - Add a new type attribute to the specified entity.
> -  ///
> -  void AddType(DIE *Entity, TypeDesc *TyDesc, CompileUnit *Unit) {
> -    if (!TyDesc) {
> -      AddBasicType(Entity, Unit, "", DW_ATE_signed, sizeof(int32_t));
> -    } else {
> -      // Check for pre-existence.
> -      DIEntry *&Slot = Unit->getDIEntrySlotFor(TyDesc);
> -
> -      // If it exists then use the existing value.
> -      if (Slot) {
> -        Entity->AddValue(DW_AT_type, DW_FORM_ref4, Slot);
> -        return;
> -      }
> -
> -      if (SubprogramDesc *SubprogramTy = dyn_cast<SubprogramDesc>(TyDesc)) {
> -        // FIXME - Not sure why programs and variables are coming through here.
> -        // Short cut for handling subprogram types (not really a TyDesc.)
> -        AddPointerType(Entity, Unit, SubprogramTy->getName());
> -      } else if (GlobalVariableDesc *GlobalTy =
> -                                         dyn_cast<GlobalVariableDesc>(TyDesc)) {
> -        // FIXME - Not sure why programs and variables are coming through here.
> -        // Short cut for handling global variable types (not really a TyDesc.)
> -        AddPointerType(Entity, Unit, GlobalTy->getName());
> -      } else {
> -        // Set up proxy.
> -        Slot = NewDIEntry();
> -
> -        // Construct type.
> -        DIE Buffer(DW_TAG_base_type);
> -        ConstructType(Buffer, TyDesc, Unit);
> -
> -        // Add debug information entry to entity and unit.
> -        DIE *Die = Unit->AddDie(Buffer);
> -        SetDIEntry(Slot, Die);
> -        Entity->AddValue(DW_AT_type, DW_FORM_ref4, Slot);
> -      }
> -    }
> -  }
> -
> -  /// AddType - Add a new type attribute to the specified entity.
>    void AddType(CompileUnit *DW_Unit, DIE *Entity, DIType Ty) {
>      if (Ty.isNull()) {
>        AddBasicType(Entity, DW_Unit, "", DW_ATE_signed, sizeof(int32_t));
> @@ -2040,332 +1959,6 @@
>      Buffer.AddChild(MemberDie);
>    }
>
> -  /// ConstructType - Adds all the required attributes to the type.
> -  ///
> -  void ConstructType(DIE &Buffer, TypeDesc *TyDesc, CompileUnit *Unit) {
> -    // Get core information.
> -    const std::string &Name = TyDesc->getName();
> -    uint64_t Size = TyDesc->getSize() >> 3;
> -
> -    if (BasicTypeDesc *BasicTy = dyn_cast<BasicTypeDesc>(TyDesc)) {
> -      // Fundamental types like int, float, bool
> -      Buffer.setTag(DW_TAG_base_type);
> -      AddUInt(&Buffer, DW_AT_encoding,  DW_FORM_data1, BasicTy->getEncoding());
> -    } else if (DerivedTypeDesc *DerivedTy = dyn_cast<DerivedTypeDesc>(TyDesc)) {
> -      // Fetch tag.
> -      unsigned Tag = DerivedTy->getTag();
> -      // FIXME - Workaround for templates.
> -      if (Tag == DW_TAG_inheritance) Tag = DW_TAG_reference_type;
> -      // Pointers, typedefs et al.
> -      Buffer.setTag(Tag);
> -      // Map to main type, void will not have a type.
> -      if (TypeDesc *FromTy = DerivedTy->getFromType())
> -        AddType(&Buffer, FromTy, Unit);
> -    } else if (CompositeTypeDesc *CompTy = dyn_cast<CompositeTypeDesc>(TyDesc)){
> -      // Fetch tag.
> -      unsigned Tag = CompTy->getTag();
> -
> -      // Set tag accordingly.
> -      if (Tag == DW_TAG_vector_type)
> -        Buffer.setTag(DW_TAG_array_type);
> -      else
> -        Buffer.setTag(Tag);
> -
> -      std::vector<DebugInfoDesc *> &Elements = CompTy->getElements();
> -
> -      switch (Tag) {
> -      case DW_TAG_vector_type:
> -        AddUInt(&Buffer, DW_AT_GNU_vector, DW_FORM_flag, 1);
> -        // Fall thru
> -      case DW_TAG_array_type: {
> -        // Add element type.
> -        if (TypeDesc *FromTy = CompTy->getFromType())
> -          AddType(&Buffer, FromTy, Unit);
> -
> -        // Don't emit size attribute.
> -        Size = 0;
> -
> -        // Construct an anonymous type for index type.
> -        DIE Buffer(DW_TAG_base_type);
> -        AddUInt(&Buffer, DW_AT_byte_size, 0, sizeof(int32_t));
> -        AddUInt(&Buffer, DW_AT_encoding, DW_FORM_data1, DW_ATE_signed);
> -        DIE *IndexTy = Unit->AddDie(Buffer);
> -
> -        // Add subranges to array type.
> -        for (unsigned i = 0, N = Elements.size(); i < N; ++i) {
> -          SubrangeDesc *SRD = cast<SubrangeDesc>(Elements[i]);
> -          int64_t Lo = SRD->getLo();
> -          int64_t Hi = SRD->getHi();
> -          DIE *Subrange = new DIE(DW_TAG_subrange_type);
> -
> -          // If a range is available.
> -          if (Lo != Hi) {
> -            AddDIEntry(Subrange, DW_AT_type, DW_FORM_ref4, IndexTy);
> -            // Only add low if non-zero.
> -            if (Lo) AddSInt(Subrange, DW_AT_lower_bound, 0, Lo);
> -            AddSInt(Subrange, DW_AT_upper_bound, 0, Hi);
> -          }
> -
> -          Buffer.AddChild(Subrange);
> -        }
> -        break;
> -      }
> -      case DW_TAG_structure_type:
> -      case DW_TAG_union_type: {
> -        // Add elements to structure type.
> -        for (unsigned i = 0, N = Elements.size(); i < N; ++i) {
> -          DebugInfoDesc *Element = Elements[i];
> -
> -          if (DerivedTypeDesc *MemberDesc = dyn_cast<DerivedTypeDesc>(Element)){
> -            // Add field or base class.
> -            unsigned Tag = MemberDesc->getTag();
> -
> -            // Extract the basic information.
> -            const std::string &Name = MemberDesc->getName();
> -            uint64_t Size = MemberDesc->getSize();
> -            uint64_t Align = MemberDesc->getAlign();
> -            uint64_t Offset = MemberDesc->getOffset();
> -
> -            // Construct member debug information entry.
> -            DIE *Member = new DIE(Tag);
> -
> -            // Add name if not "".
> -            if (!Name.empty())
> -              AddString(Member, DW_AT_name, DW_FORM_string, Name);
> -
> -            // Add location if available.
> -            AddSourceLine(Member, MemberDesc->getFile(), MemberDesc->getLine());
> -
> -            // Most of the time the field info is the same as the members.
> -            uint64_t FieldSize = Size;
> -            uint64_t FieldAlign = Align;
> -            uint64_t FieldOffset = Offset;
> -
> -            // Set the member type.
> -            TypeDesc *FromTy = MemberDesc->getFromType();
> -            AddType(Member, FromTy, Unit);
> -
> -            // Walk up typedefs until a real size is found.
> -            while (FromTy) {
> -              if (FromTy->getTag() != DW_TAG_typedef) {
> -                FieldSize = FromTy->getSize();
> -                FieldAlign = FromTy->getAlign();
> -                break;
> -              }
> -
> -              FromTy = cast<DerivedTypeDesc>(FromTy)->getFromType();
> -            }
> -
> -            // Unless we have a bit field.
> -            if (Tag == DW_TAG_member && FieldSize != Size) {
> -              // Construct the alignment mask.
> -              uint64_t AlignMask = ~(FieldAlign - 1);
> -              // Determine the high bit + 1 of the declared size.
> -              uint64_t HiMark = (Offset + FieldSize) & AlignMask;
> -              // Work backwards to determine the base offset of the field.
> -              FieldOffset = HiMark - FieldSize;
> -              // Now normalize offset to the field.
> -              Offset -= FieldOffset;
> -
> -              // Maybe we need to work from the other end.
> -              if (TD->isLittleEndian()) Offset = FieldSize - (Offset + Size);
> -
> -              // Add size and offset.
> -              AddUInt(Member, DW_AT_byte_size, 0, FieldSize >> 3);
> -              AddUInt(Member, DW_AT_bit_size, 0, Size);
> -              AddUInt(Member, DW_AT_bit_offset, 0, Offset);
> -            }
> -
> -            // Add computation for offset.
> -            DIEBlock *Block = new DIEBlock();
> -            AddUInt(Block, 0, DW_FORM_data1, DW_OP_plus_uconst);
> -            AddUInt(Block, 0, DW_FORM_udata, FieldOffset >> 3);
> -            AddBlock(Member, DW_AT_data_member_location, 0, Block);
> -
> -            // Add accessibility (public default unless is base class.
> -            if (MemberDesc->isProtected()) {
> -              AddUInt(Member, DW_AT_accessibility, 0, DW_ACCESS_protected);
> -            } else if (MemberDesc->isPrivate()) {
> -              AddUInt(Member, DW_AT_accessibility, 0, DW_ACCESS_private);
> -            } else if (Tag == DW_TAG_inheritance) {
> -              AddUInt(Member, DW_AT_accessibility, 0, DW_ACCESS_public);
> -            }
> -
> -            Buffer.AddChild(Member);
> -          } else if (GlobalVariableDesc *StaticDesc =
> -                                        dyn_cast<GlobalVariableDesc>(Element)) {
> -            // Add static member.
> -
> -            // Construct member debug information entry.
> -            DIE *Static = new DIE(DW_TAG_variable);
> -
> -            // Add name and mangled name.
> -            const std::string &Name = StaticDesc->getName();
> -            const std::string &LinkageName = StaticDesc->getLinkageName();
> -            AddString(Static, DW_AT_name, DW_FORM_string, Name);
> -            if (!LinkageName.empty()) {
> -              AddString(Static, DW_AT_MIPS_linkage_name, DW_FORM_string,
> -                                LinkageName);
> -            }
> -
> -            // Add location.
> -            AddSourceLine(Static, StaticDesc->getFile(), StaticDesc->getLine());
> -
> -            // Add type.
> -            if (TypeDesc *StaticTy = StaticDesc->getType())
> -              AddType(Static, StaticTy, Unit);
> -
> -            // Add flags.
> -            if (!StaticDesc->isStatic())
> -              AddUInt(Static, DW_AT_external, DW_FORM_flag, 1);
> -            AddUInt(Static, DW_AT_declaration, DW_FORM_flag, 1);
> -
> -            Buffer.AddChild(Static);
> -          } else if (SubprogramDesc *MethodDesc =
> -                                            dyn_cast<SubprogramDesc>(Element)) {
> -            // Add member function.
> -
> -            // Construct member debug information entry.
> -            DIE *Method = new DIE(DW_TAG_subprogram);
> -
> -            // Add name and mangled name.
> -            const std::string &Name = MethodDesc->getName();
> -            const std::string &LinkageName = MethodDesc->getLinkageName();
> -
> -            AddString(Method, DW_AT_name, DW_FORM_string, Name);
> -            bool IsCTor = TyDesc->getName() == Name;
> -
> -            if (!LinkageName.empty()) {
> -              AddString(Method, DW_AT_MIPS_linkage_name, DW_FORM_string,
> -                                LinkageName);
> -            }
> -
> -            // Add location.
> -            AddSourceLine(Method, MethodDesc->getFile(), MethodDesc->getLine());
> -
> -            // Add type.
> -            if (CompositeTypeDesc *MethodTy =
> -                   dyn_cast_or_null<CompositeTypeDesc>(MethodDesc->getType())) {
> -              // Get argument information.
> -              std::vector<DebugInfoDesc *> &Args = MethodTy->getElements();
> -
> -              // If not a ctor.
> -              if (!IsCTor) {
> -                // Add return type.
> -                AddType(Method, dyn_cast<TypeDesc>(Args[0]), Unit);
> -              }
> -
> -              // Add arguments.
> -              for (unsigned i = 1, N = Args.size(); i < N; ++i) {
> -                DIE *Arg = new DIE(DW_TAG_formal_parameter);
> -                AddType(Arg, cast<TypeDesc>(Args[i]), Unit);
> -                AddUInt(Arg, DW_AT_artificial, DW_FORM_flag, 1);
> -                Method->AddChild(Arg);
> -              }
> -            }
> -
> -            // Add flags.
> -            if (!MethodDesc->isStatic())
> -              AddUInt(Method, DW_AT_external, DW_FORM_flag, 1);
> -            AddUInt(Method, DW_AT_declaration, DW_FORM_flag, 1);
> -
> -            Buffer.AddChild(Method);
> -          }
> -        }
> -        break;
> -      }
> -      case DW_TAG_enumeration_type: {
> -        // Add enumerators to enumeration type.
> -        for (unsigned i = 0, N = Elements.size(); i < N; ++i) {
> -          EnumeratorDesc *ED = cast<EnumeratorDesc>(Elements[i]);
> -          const std::string &Name = ED->getName();
> -          int64_t Value = ED->getValue();
> -          DIE *Enumerator = new DIE(DW_TAG_enumerator);
> -          AddString(Enumerator, DW_AT_name, DW_FORM_string, Name);
> -          AddSInt(Enumerator, DW_AT_const_value, DW_FORM_sdata, Value);
> -          Buffer.AddChild(Enumerator);
> -        }
> -
> -        break;
> -      }
> -      case DW_TAG_subroutine_type: {
> -        // Add prototype flag.
> -        AddUInt(&Buffer, DW_AT_prototyped, DW_FORM_flag, 1);
> -        // Add return type.
> -        AddType(&Buffer, dyn_cast<TypeDesc>(Elements[0]), Unit);
> -
> -        // Add arguments.
> -        for (unsigned i = 1, N = Elements.size(); i < N; ++i) {
> -          DIE *Arg = new DIE(DW_TAG_formal_parameter);
> -          AddType(Arg, cast<TypeDesc>(Elements[i]), Unit);
> -          Buffer.AddChild(Arg);
> -        }
> -
> -        break;
> -      }
> -      default: break;
> -      }
> -    }
> -
> -    // Add name if not anonymous or intermediate type.
> -    if (!Name.empty()) AddString(&Buffer, DW_AT_name, DW_FORM_string, Name);
> -
> -    // Add size if non-zero (derived types might be zero-sized.)
> -    if (Size)
> -      AddUInt(&Buffer, DW_AT_byte_size, 0, Size);
> -    else if (isa<CompositeTypeDesc>(TyDesc)) {
> -      // If TyDesc is a composite type, then add size even if it's zero unless
> -      // it's a forward declaration.
> -      if (TyDesc->isForwardDecl())
> -        AddUInt(&Buffer, DW_AT_declaration, DW_FORM_flag, 1);
> -      else
> -        AddUInt(&Buffer, DW_AT_byte_size, 0, 0);
> -    }
> -
> -    // Add source line info if available and TyDesc is not a forward
> -    // declaration.
> -    if (!TyDesc->isForwardDecl())
> -      AddSourceLine(&Buffer, TyDesc->getFile(), TyDesc->getLine());
> -  }
> -
> -  /// NewCompileUnit - Create new compile unit and it's debug information entry.
> -  ///
> -  CompileUnit *NewCompileUnit(CompileUnitDesc *UnitDesc, unsigned ID) {
> -    // Construct debug information entry.
> -    DIE *Die = new DIE(DW_TAG_compile_unit);
> -    AddSectionOffset(Die, DW_AT_stmt_list, DW_FORM_data4,
> -              DWLabel("section_line", 0), DWLabel("section_line", 0), false);
> -    AddString(Die, DW_AT_producer,  DW_FORM_string, UnitDesc->getProducer());
> -    AddUInt  (Die, DW_AT_language,  DW_FORM_data1,  UnitDesc->getLanguage());
> -    AddString(Die, DW_AT_name,      DW_FORM_string, UnitDesc->getFileName());
> -    if (!UnitDesc->getDirectory().empty())
> -      AddString(Die, DW_AT_comp_dir,  DW_FORM_string, UnitDesc->getDirectory());
> -
> -    // Construct compile unit.
> -    CompileUnit *Unit = new CompileUnit(UnitDesc, ID, Die);
> -
> -    // Add Unit to compile unit map.
> -    DescToUnitMap[UnitDesc] = Unit;
> -
> -    return Unit;
> -  }
> -
> -  /// GetBaseCompileUnit - Get the main compile unit.
> -  ///
> -  CompileUnit *GetBaseCompileUnit() const {
> -    CompileUnit *Unit = CompileUnits[0];
> -    assert(Unit && "Missing compile unit.");
> -    return Unit;
> -  }
> -
> -  /// FindCompileUnit - Get the compile unit for the given descriptor.
> -  ///
> -  CompileUnit *FindCompileUnit(CompileUnitDesc *UnitDesc) {
> -    CompileUnit *Unit = DescToUnitMap[UnitDesc];
> -    assert(Unit && "Missing compile unit.");
> -    return Unit;
> -  }
> -
>    /// FindCompileUnit - Get the compile unit for the given descriptor.
>    ///
>    CompileUnit *FindCompileUnit(DICompileUnit Unit) {
> @@ -2374,136 +1967,7 @@
>      return DW_Unit;
>    }
>
> -  /// NewGlobalVariable - Add a new global variable DIE.
> -  ///
> -  DIE *NewGlobalVariable(GlobalVariableDesc *GVD) {
> -    // Get the compile unit context.
> -    CompileUnitDesc *UnitDesc =
> -      static_cast<CompileUnitDesc *>(GVD->getContext());
> -    CompileUnit *Unit = GetBaseCompileUnit();
> -
> -    // Check for pre-existence.
> -    DIE *&Slot = Unit->getDieMapSlotFor(GVD);
> -    if (Slot) return Slot;
> -
> -    // Get the global variable itself.
> -    GlobalVariable *GV = GVD->getGlobalVariable();
> -
> -    const std::string &Name = GVD->getName();
> -    const std::string &FullName = GVD->getFullName();
> -    const std::string &LinkageName = GVD->getLinkageName();
> -    // Create the global's variable DIE.
> -    DIE *VariableDie = new DIE(DW_TAG_variable);
> -    AddString(VariableDie, DW_AT_name, DW_FORM_string, Name);
> -    if (!LinkageName.empty()) {
> -      AddString(VariableDie, DW_AT_MIPS_linkage_name, DW_FORM_string,
> -                             LinkageName);
> -    }
> -    AddType(VariableDie, GVD->getType(), Unit);
> -    if (!GVD->isStatic())
> -      AddUInt(VariableDie, DW_AT_external, DW_FORM_flag, 1);
> -
> -    // Add source line info if available.
> -    AddSourceLine(VariableDie, UnitDesc, GVD->getLine());
> -
> -    // Add address.
> -    DIEBlock *Block = new DIEBlock();
> -    AddUInt(Block, 0, DW_FORM_data1, DW_OP_addr);
> -    AddObjectLabel(Block, 0, DW_FORM_udata, Asm->getGlobalLinkName(GV));
> -    AddBlock(VariableDie, DW_AT_location, 0, Block);
> -
> -    // Add to map.
> -    Slot = VariableDie;
> -
> -    // Add to context owner.
> -    Unit->getDie()->AddChild(VariableDie);
> -
> -    // Expose as global.
> -    // FIXME - need to check external flag.
> -    Unit->AddGlobal(FullName, VariableDie);
> -
> -    return VariableDie;
> -  }
> -
> -  /// NewSubprogram - Add a new subprogram DIE.
> -  ///
> -  DIE *NewSubprogram(SubprogramDesc *SPD) {
> -    // Get the compile unit context.
> -    CompileUnitDesc *UnitDesc =
> -      static_cast<CompileUnitDesc *>(SPD->getContext());
> -    CompileUnit *Unit = GetBaseCompileUnit();
> -
> -    // Check for pre-existence.
> -    DIE *&Slot = Unit->getDieMapSlotFor(SPD);
> -    if (Slot) return Slot;
> -
> -    // Gather the details (simplify add attribute code.)
> -    const std::string &Name = SPD->getName();
> -    const std::string &FullName = SPD->getFullName();
> -    const std::string &LinkageName = SPD->getLinkageName();
> -
> -    DIE *SubprogramDie = new DIE(DW_TAG_subprogram);
> -    AddString(SubprogramDie, DW_AT_name, DW_FORM_string, Name);
> -    if (!LinkageName.empty()) {
> -      AddString(SubprogramDie, DW_AT_MIPS_linkage_name, DW_FORM_string,
> -                               LinkageName);
> -    }
> -    if (SPD->getType()) AddType(SubprogramDie, SPD->getType(), Unit);
> -    if (!SPD->isStatic())
> -      AddUInt(SubprogramDie, DW_AT_external, DW_FORM_flag, 1);
> -    AddUInt(SubprogramDie, DW_AT_prototyped, DW_FORM_flag, 1);
> -
> -    // Add source line info if available.
> -    AddSourceLine(SubprogramDie, UnitDesc, SPD->getLine());
> -
> -    // Add to map.
> -    Slot = SubprogramDie;
> -
> -    // Add to context owner.
> -    Unit->getDie()->AddChild(SubprogramDie);
> -
> -    // Expose as global.
> -    Unit->AddGlobal(FullName, SubprogramDie);
> -
> -    return SubprogramDie;
> -  }
> -
> -  /// NewScopeVariable - Create a new scope variable.
> -  ///
> -  DIE *NewScopeVariable(DebugVariable *DV, CompileUnit *Unit) {
> -    // Get the descriptor.
> -    VariableDesc *VD = DV->getDesc();
> -
> -    // Translate tag to proper Dwarf tag.  The result variable is dropped for
> -    // now.
> -    unsigned Tag;
> -    switch (VD->getTag()) {
> -    case DW_TAG_return_variable:  return NULL;
> -    case DW_TAG_arg_variable:     Tag = DW_TAG_formal_parameter; break;
> -    case DW_TAG_auto_variable:    // fall thru
> -    default:                      Tag = DW_TAG_variable; break;
> -    }
> -
> -    // Define variable debug information entry.
> -    DIE *VariableDie = new DIE(Tag);
> -    AddString(VariableDie, DW_AT_name, DW_FORM_string, VD->getName());
> -
> -    // Add source line info if available.
> -    AddSourceLine(VariableDie, VD->getFile(), VD->getLine());
> -
> -    // Add variable type.
> -    AddType(VariableDie, VD->getType(), Unit);
> -
> -    // Add variable address.
> -    MachineLocation Location;
> -    Location.set(RI->getFrameRegister(*MF),
> -                 RI->getFrameIndexOffset(*MF, DV->getFrameIndex()));
> -    AddAddress(VariableDie, DW_AT_location, Location);
> -
> -    return VariableDie;
> -  }
> -
> -  /// NewScopeVariable - Create a new scope variable.
> +  /// NewDbgScopeVariable - Create a new scope variable.
>    ///
>    DIE *NewDbgScopeVariable(DbgVariable *DV, CompileUnit *Unit) {
>      // Get the descriptor.
> @@ -2688,125 +2152,6 @@
>  #endif
>    }
>
> -  /// ConstructScope - Construct the components of a scope.
> -  ///
> -  void ConstructScope(DebugScope *ParentScope,
> -                      unsigned ParentStartID, unsigned ParentEndID,
> -                      DIE *ParentDie, CompileUnit *Unit) {
> -    // Add variables to scope.
> -    std::vector<DebugVariable *> &Variables = ParentScope->getVariables();
> -    for (unsigned i = 0, N = Variables.size(); i < N; ++i) {
> -      DIE *VariableDie = NewScopeVariable(Variables[i], Unit);
> -      if (VariableDie) ParentDie->AddChild(VariableDie);
> -    }
> -
> -    // Add nested scopes.
> -    std::vector<DebugScope *> &Scopes = ParentScope->getScopes();
> -    for (unsigned j = 0, M = Scopes.size(); j < M; ++j) {
> -      // Define the Scope debug information entry.
> -      DebugScope *Scope = Scopes[j];
> -      // FIXME - Ignore inlined functions for the time being.
> -      if (!Scope->getParent()) continue;
> -
> -      unsigned StartID = MMI->MappedLabel(Scope->getStartLabelID());
> -      unsigned EndID = MMI->MappedLabel(Scope->getEndLabelID());
> -
> -      // Ignore empty scopes.
> -      if (StartID == EndID && StartID != 0) continue;
> -      if (Scope->getScopes().empty() && Scope->getVariables().empty()) continue;
> -
> -      if (StartID == ParentStartID && EndID == ParentEndID) {
> -        // Just add stuff to the parent scope.
> -        ConstructScope(Scope, ParentStartID, ParentEndID, ParentDie, Unit);
> -      } else {
> -        DIE *ScopeDie = new DIE(DW_TAG_lexical_block);
> -
> -        // Add the scope bounds.
> -        if (StartID) {
> -          AddLabel(ScopeDie, DW_AT_low_pc, DW_FORM_addr,
> -                             DWLabel("label", StartID));
> -        } else {
> -          AddLabel(ScopeDie, DW_AT_low_pc, DW_FORM_addr,
> -                             DWLabel("func_begin", SubprogramCount));
> -        }
> -        if (EndID) {
> -          AddLabel(ScopeDie, DW_AT_high_pc, DW_FORM_addr,
> -                             DWLabel("label", EndID));
> -        } else {
> -          AddLabel(ScopeDie, DW_AT_high_pc, DW_FORM_addr,
> -                             DWLabel("func_end", SubprogramCount));
> -        }
> -
> -        // Add the scope contents.
> -        ConstructScope(Scope, StartID, EndID, ScopeDie, Unit);
> -        ParentDie->AddChild(ScopeDie);
> -      }
> -    }
> -  }
> -
> -  /// ConstructRootScope - Construct the scope for the subprogram.
> -  ///
> -  void ConstructRootScope(DebugScope *RootScope) {
> -    // Exit if there is no root scope.
> -    if (!RootScope) return;
> -
> -    // Get the subprogram debug information entry.
> -    SubprogramDesc *SPD = cast<SubprogramDesc>(RootScope->getDesc());
> -
> -    // Get the compile unit context.
> -    CompileUnit *Unit = GetBaseCompileUnit();
> -
> -    // Get the subprogram die.
> -    DIE *SPDie = Unit->getDieMapSlotFor(SPD);
> -    assert(SPDie && "Missing subprogram descriptor");
> -
> -    // Add the function bounds.
> -    AddLabel(SPDie, DW_AT_low_pc, DW_FORM_addr,
> -                    DWLabel("func_begin", SubprogramCount));
> -    AddLabel(SPDie, DW_AT_high_pc, DW_FORM_addr,
> -                    DWLabel("func_end", SubprogramCount));
> -    MachineLocation Location(RI->getFrameRegister(*MF));
> -    AddAddress(SPDie, DW_AT_frame_base, Location);
> -
> -    ConstructScope(RootScope, 0, 0, SPDie, Unit);
> -  }
> -
> -  /// ConstructDefaultScope - Construct a default scope for the subprogram.
> -  ///
> -  void ConstructDefaultScope(MachineFunction *MF) {
> -    // Find the correct subprogram descriptor.
> -    std::vector<SubprogramDesc *> Subprograms;
> -    MMI->getAnchoredDescriptors<SubprogramDesc>(*M, Subprograms);
> -
> -    for (unsigned i = 0, N = Subprograms.size(); i < N; ++i) {
> -      SubprogramDesc *SPD = Subprograms[i];
> -
> -      if (SPD->getName() == MF->getFunction()->getName()) {
> -        // Get the compile unit context.
> -        CompileUnit *Unit = GetBaseCompileUnit();
> -
> -        // Get the subprogram die.
> -        DIE *SPDie = Unit->getDieMapSlotFor(SPD);
> -        assert(SPDie && "Missing subprogram descriptor");
> -
> -        // Add the function bounds.
> -        AddLabel(SPDie, DW_AT_low_pc, DW_FORM_addr,
> -                 DWLabel("func_begin", SubprogramCount));
> -        AddLabel(SPDie, DW_AT_high_pc, DW_FORM_addr,
> -                 DWLabel("func_end", SubprogramCount));
> -
> -        MachineLocation Location(RI->getFrameRegister(*MF));
> -        AddAddress(SPDie, DW_AT_frame_base, Location);
> -        return;
> -      }
> -    }
> -#if 0
> -    // FIXME: This is causing an abort because C++ mangled names are compared
> -    // with their unmangled counterparts. See PR2885. Don't do this assert.
> -    assert(0 && "Couldn't find DIE for machine function!");
> -#endif
> -  }
> -
>    /// EmitInitial - Emit initial Dwarf declarations.  This is necessary for cc
>    /// tools to recognize the object file contains Dwarf information.
>    void EmitInitial() {
> @@ -3443,18 +2788,6 @@
>      }
>    }
>
> -  /// ConstructCompileUnitDIEs - Create a compile unit DIE for each source and
> -  /// header file.
> -  void ConstructCompileUnitDIEs() {
> -    const UniqueVector<CompileUnitDesc *> CUW = MMI->getCompileUnits();
> -
> -    for (unsigned i = 1, N = CUW.size(); i <= N; ++i) {
> -      unsigned ID = MMI->RecordSource(CUW[i]);
> -      CompileUnit *Unit = NewCompileUnit(CUW[i], ID);
> -      CompileUnits.push_back(Unit);
> -    }
> -  }
> -
>    /// ConstructGlobalVariableDIEs - Create DIEs for each of the externally
>    /// visible global variables.
>    void ConstructGlobalVariableDIEs() {
> @@ -3502,18 +2835,6 @@
>      }
>    }
>
> -  /// ConstructGlobalDIEs - Create DIEs for each of the externally visible
> -  /// global variables.
> -  void ConstructGlobalDIEs() {
> -    std::vector<GlobalVariableDesc *> GlobalVariables;
> -    MMI->getAnchoredDescriptors<GlobalVariableDesc>(*M, GlobalVariables);
> -
> -    for (unsigned i = 0, N = GlobalVariables.size(); i < N; ++i) {
> -      GlobalVariableDesc *GVD = GlobalVariables[i];
> -      NewGlobalVariable(GVD);
> -    }
> -  }
> -
>    /// ConstructSubprograms - Create DIEs for each of the externally visible
>    /// subprograms.
>    void ConstructSubprograms() {
> @@ -3553,18 +2874,6 @@
>      }
>    }
>
> -  /// ConstructSubprogramDIEs - Create DIEs for each of the externally visible
> -  /// subprograms.
> -  void ConstructSubprogramDIEs() {
> -    std::vector<SubprogramDesc *> Subprograms;
> -    MMI->getAnchoredDescriptors<SubprogramDesc>(*M, Subprograms);
> -
> -    for (unsigned i = 0, N = Subprograms.size(); i < N; ++i) {
> -      SubprogramDesc *SPD = Subprograms[i];
> -      NewSubprogram(SPD);
> -    }
> -  }
> -
>  public:
>    //===--------------------------------------------------------------------===//
>    // Main entry points.
> @@ -3577,7 +2886,6 @@
>    , ValuesSet(InitValuesSetSize)
>    , Values()
>    , StringPool()
> -  , DescToUnitMap()
>    , SectionMap()
>    , SectionSourceLines()
>    , didInitial(false)
> @@ -3632,47 +2940,6 @@
>        EmitInitial();
>    }
>
> -  /// SetModuleInfo - Set machine module information when it's known that pass
> -  /// manager has created it.  Set by the target AsmPrinter.
> -  void SetModuleInfo(MachineModuleInfo *mmi) {
> -    assert (0 && "Who is this?");
> -    // Make sure initial declarations are made.
> -    if (!MMI && mmi->hasDebugInfo()) {
> -      MMI = mmi;
> -      shouldEmit = true;
> -
> -      // Create all the compile unit DIEs.
> -      ConstructCompileUnitDIEs();
> -
> -      // Create DIEs for each of the externally visible global variables.
> -      ConstructGlobalDIEs();
> -
> -      // Create DIEs for each of the externally visible subprograms.
> -      ConstructSubprogramDIEs();
> -
> -      // Prime section data.
> -      SectionMap.insert(TAI->getTextSection());
> -
> -      // Print out .file directives to specify files for .loc directives. These
> -      // are printed out early so that they precede any .loc directives.
> -      if (TAI->hasDotLocAndDotFile()) {
> -        const UniqueVector<SourceFileInfo> &SourceFiles = MMI->getSourceFiles();
> -        const UniqueVector<std::string> &Directories = MMI->getDirectories();
> -        for (unsigned i = 1, e = SourceFiles.size(); i <= e; ++i) {
> -          sys::Path FullPath(Directories[SourceFiles[i].getDirectoryID()]);
> -          bool AppendOk = FullPath.appendComponent(SourceFiles[i].getName());
> -          assert(AppendOk && "Could not append filename to directory!");
> -          AppendOk = false;
> -          Asm->EmitFile(i, FullPath.toString());
> -          Asm->EOL();
> -        }
> -      }
> -
> -      // Emit initial sections
> -      EmitInitial();
> -    }
> -  }
> -
>    /// BeginModule - Emit all Dwarf sections that should come prior to the
>    /// content.
>    void BeginModule(Module *M) {
> @@ -4991,3 +4258,4 @@
>  void DwarfWriter::RecordVariable(GlobalVariable *GV, unsigned FrameIndex) {
>    DD->RecordVariable(GV, FrameIndex);
>  }
> +
>
> Modified: llvm/trunk/lib/CodeGen/MachineModuleInfo.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/MachineModuleInfo.cpp?rev=62199&r1=62198&r2=62199&view=diff
>
> ==============================================================================
> --- llvm/trunk/lib/CodeGen/MachineModuleInfo.cpp (original)
> +++ llvm/trunk/lib/CodeGen/MachineModuleInfo.cpp Tue Jan 13 17:54:55 2009
> @@ -33,1598 +33,11 @@
>  char MachineModuleInfo::ID = 0;
>
>  //===----------------------------------------------------------------------===//
> -
> -/// getGlobalVariablesUsing - Return all of the GlobalVariables which have the
> -/// specified value in their initializer somewhere.
> -static void
> -getGlobalVariablesUsing(Value *V, std::vector<GlobalVariable*> &Result) {
> -  // Scan though value users.
> -  for (Value::use_iterator I = V->use_begin(), E = V->use_end(); I != E; ++I) {
> -    if (GlobalVariable *GV = dyn_cast<GlobalVariable>(*I)) {
> -      // If the user is a GlobalVariable then add to result.
> -      Result.push_back(GV);
> -    } else if (Constant *C = dyn_cast<Constant>(*I)) {
> -      // If the user is a constant variable then scan its users
> -      getGlobalVariablesUsing(C, Result);
> -    }
> -  }
> -}
> -
> -/// getGlobalVariablesUsing - Return all of the GlobalVariables that use the
> -/// named GlobalVariable.
> -static void
> -getGlobalVariablesUsing(Module &M, const std::string &RootName,
> -                        std::vector<GlobalVariable*> &Result) {
> -  std::vector<const Type*> FieldTypes;
> -  FieldTypes.push_back(Type::Int32Ty);
> -  FieldTypes.push_back(Type::Int32Ty);
> -
> -  // Get the GlobalVariable root.
> -  GlobalVariable *UseRoot = M.getGlobalVariable(RootName,
> -                                                StructType::get(FieldTypes));
> -
> -  // If present and linkonce then scan for users.
> -  if (UseRoot && UseRoot->hasLinkOnceLinkage())
> -    getGlobalVariablesUsing(UseRoot, Result);
> -}
> -
> -/// isStringValue - Return true if the given value can be coerced to a string.
> -///
> -static bool isStringValue(Value *V) {
> -  if (GlobalVariable *GV = dyn_cast<GlobalVariable>(V)) {
> -    if (GV->hasInitializer() && isa<ConstantArray>(GV->getInitializer())) {
> -      ConstantArray *Init = cast<ConstantArray>(GV->getInitializer());
> -      return Init->isString();
> -    }
> -  } else if (Constant *C = dyn_cast<Constant>(V)) {
> -    if (GlobalValue *GV = dyn_cast<GlobalValue>(C))
> -      return isStringValue(GV);
> -    else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(C)) {
> -      if (CE->getOpcode() == Instruction::GetElementPtr) {
> -        if (CE->getNumOperands() == 3 &&
> -            cast<Constant>(CE->getOperand(1))->isNullValue() &&
> -            isa<ConstantInt>(CE->getOperand(2))) {
> -          return isStringValue(CE->getOperand(0));
> -        }
> -      }
> -    }
> -  }
> -  return false;
> -}
> -
> -/// getGlobalVariable - Return either a direct or cast Global value.
> -///
> -static GlobalVariable *getGlobalVariable(Value *V) {
> -  if (GlobalVariable *GV = dyn_cast<GlobalVariable>(V)) {
> -    return GV;
> -  } else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V)) {
> -    if (CE->getOpcode() == Instruction::BitCast) {
> -      return dyn_cast<GlobalVariable>(CE->getOperand(0));
> -    } else if (CE->getOpcode() == Instruction::GetElementPtr) {
> -      for (unsigned int i=1; i<CE->getNumOperands(); i++) {
> -        if (!CE->getOperand(i)->isNullValue())
> -          return NULL;
> -      }
> -      return dyn_cast<GlobalVariable>(CE->getOperand(0));
> -    }
> -  }
> -  return NULL;
> -}
> -
> -/// isGlobalVariable - Return true if the given value can be coerced to a
> -/// GlobalVariable.
> -static bool isGlobalVariable(Value *V) {
> -  if (isa<GlobalVariable>(V) || isa<ConstantPointerNull>(V)) {
> -    return true;
> -  } else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V)) {
> -    if (CE->getOpcode() == Instruction::BitCast) {
> -      return isa<GlobalVariable>(CE->getOperand(0));
> -    } else if (CE->getOpcode() == Instruction::GetElementPtr) {
> -      for (unsigned int i=1; i<CE->getNumOperands(); i++) {
> -        if (!CE->getOperand(i)->isNullValue())
> -          return false;
> -      }
> -      return isa<GlobalVariable>(CE->getOperand(0));
> -    }
> -  }
> -  return false;
> -}
> -
> -/// getUIntOperand - Return ith operand if it is an unsigned integer.
> -///
> -static ConstantInt *getUIntOperand(GlobalVariable *GV, unsigned i) {
> -  // Make sure the GlobalVariable has an initializer.
> -  if (!GV->hasInitializer()) return NULL;
> -
> -  // Get the initializer constant.
> -  ConstantStruct *CI = dyn_cast<ConstantStruct>(GV->getInitializer());
> -  if (!CI) return NULL;
> -
> -  // Check if there is at least i + 1 operands.
> -  unsigned N = CI->getNumOperands();
> -  if (i >= N) return NULL;
> -
> -  // Check constant.
> -  return dyn_cast<ConstantInt>(CI->getOperand(i));
> -}
> -
> -//===----------------------------------------------------------------------===//
> -
> -static unsigned CountFields(DebugInfoDesc *DD) {
> -  unsigned Count = 0;
> -
> -  switch (DD->getTag()) {
> -  case DW_TAG_anchor:           // AnchorDesc
> -    // Tag
> -    // AnchorTag
> -    Count = 2;
> -    break;
> -  case DW_TAG_compile_unit:     // CompileUnitDesc
> -    // [DW_TAG_anchor]
> -    // if (Version == 0) DebugVersion
> -    // Language
> -    // FileName
> -    // Directory
> -    // Producer
> -    Count = 6;
> -
> -    // Handle cases out of sync with compiler.
> -    if (DD->getVersion() == 0)
> -      ++Count;
> -
> -    break;
> -  case DW_TAG_variable:         // GlobalVariableDesc
> -    // [DW_TAG_anchor]
> -    // Context
> -    // Name
> -    // FullName
> -    // LinkageName
> -    // File
> -    // Line
> -    // TyDesc
> -    // IsStatic
> -    // IsDefinition
> -    // Global
> -    Count = 12;
> -    break;
> -  case DW_TAG_subprogram:       // SubprogramDesc
> -    // [DW_TAG_anchor]
> -    // Context
> -    // Name
> -    // FullName
> -    // LinkageName
> -    // File
> -    // Line
> -    // TyDesc
> -    // IsStatic
> -    // IsDefinition
> -    Count = 11;
> -    break;
> -  case DW_TAG_lexical_block:    // BlockDesc
> -    // Tag
> -    // Context
> -    Count = 2;
> -    break;
> -  case DW_TAG_base_type:        // BasicTypeDesc
> -    // Tag
> -    // Context
> -    // Name
> -    // File
> -    // Line
> -    // Size
> -    // Align
> -    // Offset
> -    // if (Version > LLVMDebugVersion4) Flags
> -    // Encoding
> -    Count = 9;
> -
> -    if (DD->getVersion() > LLVMDebugVersion4)
> -      ++Count;
> -
> -    break;
> -  case DW_TAG_typedef:
> -  case DW_TAG_pointer_type:
> -  case DW_TAG_reference_type:
> -  case DW_TAG_const_type:
> -  case DW_TAG_volatile_type:
> -  case DW_TAG_restrict_type:
> -  case DW_TAG_member:
> -  case DW_TAG_inheritance:      // DerivedTypeDesc
> -    // Tag
> -    // Context
> -    // Name
> -    // File
> -    // Line
> -    // Size
> -    // Align
> -    // Offset
> -    // if (Version > LLVMDebugVersion4) Flags
> -    // FromType
> -    Count = 9;
> -
> -    if (DD->getVersion() > LLVMDebugVersion4)
> -      ++Count;
> -
> -    break;
> -  case DW_TAG_array_type:
> -  case DW_TAG_structure_type:
> -  case DW_TAG_union_type:
> -  case DW_TAG_enumeration_type:
> -  case DW_TAG_vector_type:
> -  case DW_TAG_subroutine_type:  // CompositeTypeDesc
> -    // Tag
> -    // Context
> -    // Name
> -    // File
> -    // Line
> -    // Size
> -    // Align
> -    // Offset
> -    // if (Version > LLVMDebugVersion4) Flags
> -    // FromType
> -    // Elements
> -    Count = 10;
> -
> -    if (DD->getVersion() > LLVMDebugVersion4)
> -      ++Count;
> -
> -    break;
> -  case DW_TAG_subrange_type:    // SubrangeDesc
> -    // Tag
> -    // Lo
> -    // Hi
> -    Count = 3;
> -    break;
> -  case DW_TAG_enumerator:       // EnumeratorDesc
> -    // Tag
> -    // Name
> -    // Value
> -    Count = 3;
> -    break;
> -  case DW_TAG_return_variable:
> -  case DW_TAG_arg_variable:
> -  case DW_TAG_auto_variable:    // VariableDesc
> -    // Tag
> -    // Context
> -    // Name
> -    // File
> -    // Line
> -    // TyDesc
> -    Count = 6;
> -    break;
> -  default:
> -    break;
> -  }
> -
> -  return Count;
> -}
> -
> -//===----------------------------------------------------------------------===//
> -
> -/// ApplyToFields - Target the visitor to each field of the debug information
> -/// descriptor.
> -void DIVisitor::ApplyToFields(DebugInfoDesc *DD) {
> -  DD->ApplyToFields(this);
> -}
> -
> -namespace {
> -
> -//===----------------------------------------------------------------------===//
> -/// DIDeserializeVisitor - This DIVisitor deserializes all the fields in the
> -/// supplied DebugInfoDesc.
> -class DIDeserializeVisitor : public DIVisitor {
> -private:
> -  DIDeserializer &DR;                   // Active deserializer.
> -  unsigned I;                           // Current operand index.
> -  ConstantStruct *CI;                   // GlobalVariable constant initializer.
> -
> -public:
> -  DIDeserializeVisitor(DIDeserializer &D, GlobalVariable *GV)
> -    : DIVisitor(), DR(D), I(0), CI(cast<ConstantStruct>(GV->getInitializer()))
> -  {}
> -
> -  /// Apply - Set the value of each of the fields.
> -  ///
> -  virtual void Apply(int &Field) {
> -    Constant *C = CI->getOperand(I++);
> -    Field = cast<ConstantInt>(C)->getSExtValue();
> -  }
> -  virtual void Apply(unsigned &Field) {
> -    Constant *C = CI->getOperand(I++);
> -    Field = cast<ConstantInt>(C)->getZExtValue();
> -  }
> -  virtual void Apply(int64_t &Field) {
> -    Constant *C = CI->getOperand(I++);
> -    Field = cast<ConstantInt>(C)->getSExtValue();
> -  }
> -  virtual void Apply(uint64_t &Field) {
> -    Constant *C = CI->getOperand(I++);
> -    Field = cast<ConstantInt>(C)->getZExtValue();
> -  }
> -  virtual void Apply(bool &Field) {
> -    Constant *C = CI->getOperand(I++);
> -    Field = cast<ConstantInt>(C)->getZExtValue();
> -  }
> -  virtual void Apply(std::string &Field) {
> -    Constant *C = CI->getOperand(I++);
> -    // Fills in the string if it succeeds
> -    if (!GetConstantStringInfo(C, Field))
> -      Field.clear();
> -  }
> -  virtual void Apply(DebugInfoDesc *&Field) {
> -    Constant *C = CI->getOperand(I++);
> -    Field = DR.Deserialize(C);
> -  }
> -  virtual void Apply(GlobalVariable *&Field) {
> -    Constant *C = CI->getOperand(I++);
> -    Field = getGlobalVariable(C);
> -  }
> -  virtual void Apply(std::vector<DebugInfoDesc *> &Field) {
> -    Field.resize(0);
> -    Constant *C = CI->getOperand(I++);
> -    GlobalVariable *GV = getGlobalVariable(C);
> -    if (GV && GV->hasInitializer()) {
> -      if (ConstantArray *CA = dyn_cast<ConstantArray>(GV->getInitializer())) {
> -        for (unsigned i = 0, N = CA->getNumOperands(); i < N; ++i) {
> -          GlobalVariable *GVE = getGlobalVariable(CA->getOperand(i));
> -          DebugInfoDesc *DE = DR.Deserialize(GVE);
> -          Field.push_back(DE);
> -        }
> -      } else if (GV->getInitializer()->isNullValue()) {
> -        if (const ArrayType *T =
> -            dyn_cast<ArrayType>(GV->getType()->getElementType())) {
> -          Field.resize(T->getNumElements());
> -        }
> -      }
> -    }
> -  }
> -};
> -
> -//===----------------------------------------------------------------------===//
> -/// DISerializeVisitor - This DIVisitor serializes all the fields in
> -/// the supplied DebugInfoDesc.
> -class DISerializeVisitor : public DIVisitor {
> -private:
> -  DISerializer &SR;                     // Active serializer.
> -  std::vector<Constant*> &Elements;     // Element accumulator.
> -
> -public:
> -  DISerializeVisitor(DISerializer &S, std::vector<Constant*> &E)
> -  : DIVisitor()
> -  , SR(S)
> -  , Elements(E)
> -  {}
> -
> -  /// Apply - Set the value of each of the fields.
> -  ///
> -  virtual void Apply(int &Field) {
> -    Elements.push_back(ConstantInt::get(Type::Int32Ty, int32_t(Field)));
> -  }
> -  virtual void Apply(unsigned &Field) {
> -    Elements.push_back(ConstantInt::get(Type::Int32Ty, uint32_t(Field)));
> -  }
> -  virtual void Apply(int64_t &Field) {
> -    Elements.push_back(ConstantInt::get(Type::Int64Ty, int64_t(Field)));
> -  }
> -  virtual void Apply(uint64_t &Field) {
> -    Elements.push_back(ConstantInt::get(Type::Int64Ty, uint64_t(Field)));
> -  }
> -  virtual void Apply(bool &Field) {
> -    Elements.push_back(ConstantInt::get(Type::Int1Ty, Field));
> -  }
> -  virtual void Apply(std::string &Field) {
> -    Elements.push_back(SR.getString(Field));
> -  }
> -  virtual void Apply(DebugInfoDesc *&Field) {
> -    GlobalVariable *GV = NULL;
> -
> -    // If non-NULL then convert to global.
> -    if (Field) GV = SR.Serialize(Field);
> -
> -    // FIXME - At some point should use specific type.
> -    const PointerType *EmptyTy = SR.getEmptyStructPtrType();
> -
> -    if (GV) {
> -      // Set to pointer to global.
> -      Elements.push_back(ConstantExpr::getBitCast(GV, EmptyTy));
> -    } else {
> -      // Use NULL.
> -      Elements.push_back(ConstantPointerNull::get(EmptyTy));
> -    }
> -  }
> -  virtual void Apply(GlobalVariable *&Field) {
> -    const PointerType *EmptyTy = SR.getEmptyStructPtrType();
> -    if (Field) {
> -      Elements.push_back(ConstantExpr::getBitCast(Field, EmptyTy));
> -    } else {
> -      Elements.push_back(ConstantPointerNull::get(EmptyTy));
> -    }
> -  }
> -  virtual void Apply(std::vector<DebugInfoDesc *> &Field) {
> -    const PointerType *EmptyTy = SR.getEmptyStructPtrType();
> -    unsigned N = Field.size();
> -    ArrayType *AT = ArrayType::get(EmptyTy, N);
> -    std::vector<Constant *> ArrayElements;
> -
> -    for (unsigned i = 0, N = Field.size(); i < N; ++i) {
> -      if (DebugInfoDesc *Element = Field[i]) {
> -        GlobalVariable *GVE = SR.Serialize(Element);
> -        Constant *CE = ConstantExpr::getBitCast(GVE, EmptyTy);
> -        ArrayElements.push_back(cast<Constant>(CE));
> -      } else {
> -        ArrayElements.push_back(ConstantPointerNull::get(EmptyTy));
> -      }
> -    }
> -
> -    Constant *CA = ConstantArray::get(AT, ArrayElements);
> -    GlobalVariable *CAGV = new GlobalVariable(AT, true,
> -                                              GlobalValue::InternalLinkage,
> -                                              CA, "llvm.dbg.array",
> -                                              SR.getModule());
> -    CAGV->setSection("llvm.metadata");
> -    Constant *CAE = ConstantExpr::getBitCast(CAGV, EmptyTy);
> -    Elements.push_back(CAE);
> -  }
> -};
> -
> -//===----------------------------------------------------------------------===//
> -/// DIGetTypesVisitor - This DIVisitor gathers all the field types in
> -/// the supplied DebugInfoDesc.
> -class DIGetTypesVisitor : public DIVisitor {
> -private:
> -  DISerializer &SR;                     // Active serializer.
> -  std::vector<const Type*> &Fields;     // Type accumulator.
> -
> -public:
> -  DIGetTypesVisitor(DISerializer &S, std::vector<const Type*> &F)
> -  : DIVisitor()
> -  , SR(S)
> -  , Fields(F)
> -  {}
> -
> -  /// Apply - Set the value of each of the fields.
> -  ///
> -  virtual void Apply(int &Field) {
> -    Fields.push_back(Type::Int32Ty);
> -  }
> -  virtual void Apply(unsigned &Field) {
> -    Fields.push_back(Type::Int32Ty);
> -  }
> -  virtual void Apply(int64_t &Field) {
> -    Fields.push_back(Type::Int64Ty);
> -  }
> -  virtual void Apply(uint64_t &Field) {
> -    Fields.push_back(Type::Int64Ty);
> -  }
> -  virtual void Apply(bool &Field) {
> -    Fields.push_back(Type::Int1Ty);
> -  }
> -  virtual void Apply(std::string &Field) {
> -    Fields.push_back(SR.getStrPtrType());
> -  }
> -  virtual void Apply(DebugInfoDesc *&Field) {
> -    // FIXME - At some point should use specific type.
> -    const PointerType *EmptyTy = SR.getEmptyStructPtrType();
> -    Fields.push_back(EmptyTy);
> -  }
> -  virtual void Apply(GlobalVariable *&Field) {
> -    const PointerType *EmptyTy = SR.getEmptyStructPtrType();
> -    Fields.push_back(EmptyTy);
> -  }
> -  virtual void Apply(std::vector<DebugInfoDesc *> &Field) {
> -    const PointerType *EmptyTy = SR.getEmptyStructPtrType();
> -    Fields.push_back(EmptyTy);
> -  }
> -};
> -
> -//===----------------------------------------------------------------------===//
> -/// DIVerifyVisitor - This DIVisitor verifies all the field types against
> -/// a constant initializer.
> -class DIVerifyVisitor : public DIVisitor {
> -private:
> -  DIVerifier &VR;                       // Active verifier.
> -  bool IsValid;                         // Validity status.
> -  unsigned I;                           // Current operand index.
> -  ConstantStruct *CI;                   // GlobalVariable constant initializer.
> -
> -public:
> -  DIVerifyVisitor(DIVerifier &V, GlobalVariable *GV)
> -  : DIVisitor()
> -  , VR(V)
> -  , IsValid(true)
> -  , I(0)
> -  , CI(cast<ConstantStruct>(GV->getInitializer()))
> -  {
> -  }
>
> -  // Accessors.
> -  bool isValid() const { return IsValid; }
> -
> -  /// Apply - Set the value of each of the fields.
> -  ///
> -  virtual void Apply(int &Field) {
> -    Constant *C = CI->getOperand(I++);
> -    IsValid = IsValid && isa<ConstantInt>(C);
> -  }
> -  virtual void Apply(unsigned &Field) {
> -    Constant *C = CI->getOperand(I++);
> -    IsValid = IsValid && isa<ConstantInt>(C);
> -  }
> -  virtual void Apply(int64_t &Field) {
> -    Constant *C = CI->getOperand(I++);
> -    IsValid = IsValid && isa<ConstantInt>(C);
> -  }
> -  virtual void Apply(uint64_t &Field) {
> -    Constant *C = CI->getOperand(I++);
> -    IsValid = IsValid && isa<ConstantInt>(C);
> -  }
> -  virtual void Apply(bool &Field) {
> -    Constant *C = CI->getOperand(I++);
> -    IsValid = IsValid && isa<ConstantInt>(C) && C->getType() == Type::Int1Ty;
> -  }
> -  virtual void Apply(std::string &Field) {
> -    Constant *C = CI->getOperand(I++);
> -    IsValid = IsValid &&
> -              (!C || isStringValue(C) || C->isNullValue());
> -  }
> -  virtual void Apply(DebugInfoDesc *&Field) {
> -    // FIXME - Prepare the correct descriptor.
> -    Constant *C = CI->getOperand(I++);
> -    IsValid = IsValid && isGlobalVariable(C);
> -  }
> -  virtual void Apply(GlobalVariable *&Field) {
> -    Constant *C = CI->getOperand(I++);
> -    IsValid = IsValid && isGlobalVariable(C);
> -  }
> -  virtual void Apply(std::vector<DebugInfoDesc *> &Field) {
> -    Constant *C = CI->getOperand(I++);
> -    IsValid = IsValid && isGlobalVariable(C);
> -    if (!IsValid) return;
> -
> -    GlobalVariable *GV = getGlobalVariable(C);
> -    IsValid = IsValid && GV && GV->hasInitializer();
> -    if (!IsValid) return;
> -
> -    ConstantArray *CA = dyn_cast<ConstantArray>(GV->getInitializer());
> -    IsValid = IsValid && CA;
> -    if (!IsValid) return;
> -
> -    for (unsigned i = 0, N = CA->getNumOperands(); IsValid && i < N; ++i) {
> -      IsValid = IsValid && isGlobalVariable(CA->getOperand(i));
> -      if (!IsValid) return;
> -
> -      GlobalVariable *GVE = getGlobalVariable(CA->getOperand(i));
> -      VR.Verify(GVE);
> -    }
> -  }
> -};
> -
> -}
> -
> -//===----------------------------------------------------------------------===//
> -
> -/// TagFromGlobal - Returns the tag number from a debug info descriptor
> -/// GlobalVariable.   Return DIIValid if operand is not an unsigned int.
> -unsigned DebugInfoDesc::TagFromGlobal(GlobalVariable *GV) {
> -  ConstantInt *C = getUIntOperand(GV, 0);
> -  return C ? ((unsigned)C->getZExtValue() & ~LLVMDebugVersionMask) :
> -             (unsigned)DW_TAG_invalid;
> -}
> -
> -/// VersionFromGlobal - Returns the version number from a debug info
> -/// descriptor GlobalVariable.  Return DIIValid if operand is not an unsigned
> -/// int.
> -unsigned  DebugInfoDesc::VersionFromGlobal(GlobalVariable *GV) {
> -  ConstantInt *C = getUIntOperand(GV, 0);
> -  return C ? ((unsigned)C->getZExtValue() & LLVMDebugVersionMask) :
> -             (unsigned)DW_TAG_invalid;
> -}
> -
> -/// DescFactory - Create an instance of debug info descriptor based on Tag.
> -/// Return NULL if not a recognized Tag.
> -DebugInfoDesc *DebugInfoDesc::DescFactory(unsigned Tag) {
> -  switch (Tag) {
> -  case DW_TAG_anchor:           return new AnchorDesc();
> -  case DW_TAG_compile_unit:     return new CompileUnitDesc();
> -  case DW_TAG_variable:         return new GlobalVariableDesc();
> -  case DW_TAG_subprogram:       return new SubprogramDesc();
> -  case DW_TAG_lexical_block:    return new BlockDesc();
> -  case DW_TAG_base_type:        return new BasicTypeDesc();
> -  case DW_TAG_typedef:
> -  case DW_TAG_pointer_type:
> -  case DW_TAG_reference_type:
> -  case DW_TAG_const_type:
> -  case DW_TAG_volatile_type:
> -  case DW_TAG_restrict_type:
> -  case DW_TAG_member:
> -  case DW_TAG_inheritance:      return new DerivedTypeDesc(Tag);
> -  case DW_TAG_array_type:
> -  case DW_TAG_structure_type:
> -  case DW_TAG_union_type:
> -  case DW_TAG_enumeration_type:
> -  case DW_TAG_vector_type:
> -  case DW_TAG_subroutine_type:  return new CompositeTypeDesc(Tag);
> -  case DW_TAG_subrange_type:    return new SubrangeDesc();
> -  case DW_TAG_enumerator:       return new EnumeratorDesc();
> -  case DW_TAG_return_variable:
> -  case DW_TAG_arg_variable:
> -  case DW_TAG_auto_variable:    return new VariableDesc(Tag);
> -  default: break;
> -  }
> -  return NULL;
> -}
> -
> -/// getLinkage - get linkage appropriate for this type of descriptor.
> -///
> -GlobalValue::LinkageTypes DebugInfoDesc::getLinkage() const {
> -  return GlobalValue::InternalLinkage;
> -}
> -
> -/// ApplyToFields - Target the vistor to the fields of the descriptor.
> -///
> -void DebugInfoDesc::ApplyToFields(DIVisitor *Visitor) {
> -  Visitor->Apply(Tag);
> -}
> -
> -//===----------------------------------------------------------------------===//
> -
> -AnchorDesc::AnchorDesc()
> -: DebugInfoDesc(DW_TAG_anchor)
> -, AnchorTag(0)
> -{}
> -AnchorDesc::AnchorDesc(AnchoredDesc *D)
> -: DebugInfoDesc(DW_TAG_anchor)
> -, AnchorTag(D->getTag())
> -{}
> -
> -// Implement isa/cast/dyncast.
> -bool AnchorDesc::classof(const DebugInfoDesc *D) {
> -  return D->getTag() == DW_TAG_anchor;
> -}
> -
> -/// getLinkage - get linkage appropriate for this type of descriptor.
> -///
> -GlobalValue::LinkageTypes AnchorDesc::getLinkage() const {
> -  return GlobalValue::LinkOnceLinkage;
> -}
> -
> -/// ApplyToFields - Target the visitor to the fields of the TransUnitDesc.
> -///
> -void AnchorDesc::ApplyToFields(DIVisitor *Visitor) {
> -  DebugInfoDesc::ApplyToFields(Visitor);
> -
> -  Visitor->Apply(AnchorTag);
> -}
> -
> -/// getDescString - Return a string used to compose global names and labels. A
> -/// A global variable name needs to be defined for each debug descriptor that is
> -/// anchored. NOTE: that each global variable named here also needs to be added
> -/// to the list of names left external in the internalizer.
> -///   ExternalNames.insert("llvm.dbg.compile_units");
> -///   ExternalNames.insert("llvm.dbg.global_variables");
> -///   ExternalNames.insert("llvm.dbg.subprograms");
> -const char *AnchorDesc::getDescString() const {
> -  switch (AnchorTag) {
> -  case DW_TAG_compile_unit: return CompileUnitDesc::AnchorString;
> -  case DW_TAG_variable:     return GlobalVariableDesc::AnchorString;
> -  case DW_TAG_subprogram:   return SubprogramDesc::AnchorString;
> -  default: break;
> -  }
> -
> -  assert(0 && "Tag does not have a case for anchor string");
> -  return "";
> -}
> -
> -/// getTypeString - Return a string used to label this descriptors type.
> -///
> -const char *AnchorDesc::getTypeString() const {
> -  return "llvm.dbg.anchor.type";
> -}
> -
> -#ifndef NDEBUG
> -void AnchorDesc::dump() {
> -  cerr << getDescString() << " "
> -       << "Version(" << getVersion() << "), "
> -       << "Tag(" << getTag() << "), "
> -       << "AnchorTag(" << AnchorTag << ")\n";
> -}
> -#endif
> -
> -//===----------------------------------------------------------------------===//
> -
> -AnchoredDesc::AnchoredDesc(unsigned T)
> -: DebugInfoDesc(T)
> -, Anchor(NULL)
> -{}
> -
> -/// ApplyToFields - Target the visitor to the fields of the AnchoredDesc.
> -///
> -void AnchoredDesc::ApplyToFields(DIVisitor *Visitor) {
> -  DebugInfoDesc::ApplyToFields(Visitor);
> -
> -  Visitor->Apply(Anchor);
> -}
> -
> -//===----------------------------------------------------------------------===//
> -
> -CompileUnitDesc::CompileUnitDesc()
> -: AnchoredDesc(DW_TAG_compile_unit)
> -, Language(0)
> -, FileName("")
> -, Directory("")
> -, Producer("")
> -{}
> -
> -// Implement isa/cast/dyncast.
> -bool CompileUnitDesc::classof(const DebugInfoDesc *D) {
> -  return D->getTag() == DW_TAG_compile_unit;
> -}
> -
> -/// ApplyToFields - Target the visitor to the fields of the CompileUnitDesc.
> -///
> -void CompileUnitDesc::ApplyToFields(DIVisitor *Visitor) {
> -  AnchoredDesc::ApplyToFields(Visitor);
> -
> -  // Handle cases out of sync with compiler.
> -  if (getVersion() == 0) {
> -    unsigned DebugVersion;
> -    Visitor->Apply(DebugVersion);
> -  }
> -
> -  Visitor->Apply(Language);
> -  Visitor->Apply(FileName);
> -  Visitor->Apply(Directory);
> -  Visitor->Apply(Producer);
> -}
> -
> -/// getDescString - Return a string used to compose global names and labels.
> -///
> -const char *CompileUnitDesc::getDescString() const {
> -  return "llvm.dbg.compile_unit";
> -}
> -
> -/// getTypeString - Return a string used to label this descriptors type.
> -///
> -const char *CompileUnitDesc::getTypeString() const {
> -  return "llvm.dbg.compile_unit.type";
> -}
> -
> -/// getAnchorString - Return a string used to label this descriptor's anchor.
> -///
> -const char *const CompileUnitDesc::AnchorString = "llvm.dbg.compile_units";
> -const char *CompileUnitDesc::getAnchorString() const {
> -  return AnchorString;
> -}
> -
> -#ifndef NDEBUG
> -void CompileUnitDesc::dump() {
> -  cerr << getDescString() << " "
> -       << "Version(" << getVersion() << "), "
> -       << "Tag(" << getTag() << "), "
> -       << "Anchor(" << getAnchor() << "), "
> -       << "Language(" << Language << "), "
> -       << "FileName(\"" << FileName << "\"), "
> -       << "Directory(\"" << Directory << "\"), "
> -       << "Producer(\"" << Producer << "\")\n";
> -}
> -#endif
> -
> -//===----------------------------------------------------------------------===//
> -
> -TypeDesc::TypeDesc(unsigned T)
> -: DebugInfoDesc(T)
> -, Context(NULL)
> -, Name("")
> -, File(NULL)
> -, Line(0)
> -, Size(0)
> -, Align(0)
> -, Offset(0)
> -, Flags(0)
> -{}
> -
> -/// ApplyToFields - Target the visitor to the fields of the TypeDesc.
> -///
> -void TypeDesc::ApplyToFields(DIVisitor *Visitor) {
> -  DebugInfoDesc::ApplyToFields(Visitor);
> -
> -  Visitor->Apply(Context);
> -  Visitor->Apply(Name);
> -  Visitor->Apply(File);
> -  Visitor->Apply(Line);
> -  Visitor->Apply(Size);
> -  Visitor->Apply(Align);
> -  Visitor->Apply(Offset);
> -  if (getVersion() > LLVMDebugVersion4) Visitor->Apply(Flags);
> -}
> -
> -/// getDescString - Return a string used to compose global names and labels.
> -///
> -const char *TypeDesc::getDescString() const {
> -  return "llvm.dbg.type";
> -}
> -
> -/// getTypeString - Return a string used to label this descriptor's type.
> -///
> -const char *TypeDesc::getTypeString() const {
> -  return "llvm.dbg.type.type";
> -}
> -
> -#ifndef NDEBUG
> -void TypeDesc::dump() {
> -  cerr << getDescString() << " "
> -       << "Version(" << getVersion() << "), "
> -       << "Tag(" << getTag() << "), "
> -       << "Context(" << Context << "), "
> -       << "Name(\"" << Name << "\"), "
> -       << "File(" << File << "), "
> -       << "Line(" << Line << "), "
> -       << "Size(" << Size << "), "
> -       << "Align(" << Align << "), "
> -       << "Offset(" << Offset << "), "
> -       << "Flags(" << Flags << ")\n";
> -}
> -#endif
> -
> -//===----------------------------------------------------------------------===//
> -
> -BasicTypeDesc::BasicTypeDesc()
> -: TypeDesc(DW_TAG_base_type)
> -, Encoding(0)
> -{}
> -
> -// Implement isa/cast/dyncast.
> -bool BasicTypeDesc::classof(const DebugInfoDesc *D) {
> -  return D->getTag() == DW_TAG_base_type;
> -}
> -
> -/// ApplyToFields - Target the visitor to the fields of the BasicTypeDesc.
> -///
> -void BasicTypeDesc::ApplyToFields(DIVisitor *Visitor) {
> -  TypeDesc::ApplyToFields(Visitor);
> -
> -  Visitor->Apply(Encoding);
> -}
> -
> -/// getDescString - Return a string used to compose global names and labels.
> -///
> -const char *BasicTypeDesc::getDescString() const {
> -  return "llvm.dbg.basictype";
> -}
> -
> -/// getTypeString - Return a string used to label this descriptor's type.
> -///
> -const char *BasicTypeDesc::getTypeString() const {
> -  return "llvm.dbg.basictype.type";
> -}
> -
> -#ifndef NDEBUG
> -void BasicTypeDesc::dump() {
> -  cerr << getDescString() << " "
> -       << "Version(" << getVersion() << "), "
> -       << "Tag(" << getTag() << "), "
> -       << "Context(" << getContext() << "), "
> -       << "Name(\"" << getName() << "\"), "
> -       << "Size(" << getSize() << "), "
> -       << "Encoding(" << Encoding << "),"
> -       << "Flags(" << Flags << ")\n";
> -}
> -#endif
> -
> -//===----------------------------------------------------------------------===//
> -
> -DerivedTypeDesc::DerivedTypeDesc(unsigned T)
> -: TypeDesc(T)
> -, FromType(NULL)
> -{}
> -
> -// Implement isa/cast/dyncast.
> -bool DerivedTypeDesc::classof(const DebugInfoDesc *D) {
> -  unsigned T =  D->getTag();
> -  switch (T) {
> -  case DW_TAG_typedef:
> -  case DW_TAG_pointer_type:
> -  case DW_TAG_reference_type:
> -  case DW_TAG_const_type:
> -  case DW_TAG_volatile_type:
> -  case DW_TAG_restrict_type:
> -  case DW_TAG_member:
> -  case DW_TAG_inheritance:
> -    return true;
> -  default: break;
> -  }
> -  return false;
> -}
> -
> -/// ApplyToFields - Target the visitor to the fields of the DerivedTypeDesc.
> -///
> -void DerivedTypeDesc::ApplyToFields(DIVisitor *Visitor) {
> -  TypeDesc::ApplyToFields(Visitor);
> -
> -  Visitor->Apply(FromType);
> -}
> -
> -/// getDescString - Return a string used to compose global names and labels.
> -///
> -const char *DerivedTypeDesc::getDescString() const {
> -  return "llvm.dbg.derivedtype";
> -}
> -
> -/// getTypeString - Return a string used to label this descriptor's type.
> -///
> -const char *DerivedTypeDesc::getTypeString() const {
> -  return "llvm.dbg.derivedtype.type";
> -}
> -
> -#ifndef NDEBUG
> -void DerivedTypeDesc::dump() {
> -  cerr << getDescString() << " "
> -       << "Version(" << getVersion() << "), "
> -       << "Tag(" << getTag() << "), "
> -       << "Context(" << getContext() << "), "
> -       << "Name(\"" << getName() << "\"), "
> -       << "Size(" << getSize() << "), "
> -       << "File(" << getFile() << "), "
> -       << "Line(" << getLine() << "), "
> -       << "FromType(" << FromType << "),"
> -       << "Flags(" << Flags << ")\n";
> -}
> -#endif
> -
> -//===----------------------------------------------------------------------===//
> -
> -CompositeTypeDesc::CompositeTypeDesc(unsigned T)
> -: DerivedTypeDesc(T)
> -, Elements()
> -{}
> -
> -// Implement isa/cast/dyncast.
> -bool CompositeTypeDesc::classof(const DebugInfoDesc *D) {
> -  unsigned T =  D->getTag();
> -  switch (T) {
> -  case DW_TAG_array_type:
> -  case DW_TAG_structure_type:
> -  case DW_TAG_union_type:
> -  case DW_TAG_enumeration_type:
> -  case DW_TAG_vector_type:
> -  case DW_TAG_subroutine_type:
> -    return true;
> -  default: break;
> -  }
> -  return false;
> -}
> -
> -/// ApplyToFields - Target the visitor to the fields of the CompositeTypeDesc.
> -///
> -void CompositeTypeDesc::ApplyToFields(DIVisitor *Visitor) {
> -  DerivedTypeDesc::ApplyToFields(Visitor);
> -
> -  Visitor->Apply(Elements);
> -}
> -
> -/// getDescString - Return a string used to compose global names and labels.
> -///
> -const char *CompositeTypeDesc::getDescString() const {
> -  return "llvm.dbg.compositetype";
> -}
> -
> -/// getTypeString - Return a string used to label this descriptor's type.
> -///
> -const char *CompositeTypeDesc::getTypeString() const {
> -  return "llvm.dbg.compositetype.type";
> -}
> -
> -#ifndef NDEBUG
> -void CompositeTypeDesc::dump() {
> -  cerr << getDescString() << " "
> -       << "Version(" << getVersion() << "), "
> -       << "Tag(" << getTag() << "), "
> -       << "Context(" << getContext() << "), "
> -       << "Name(\"" << getName() << "\"), "
> -       << "Size(" << getSize() << "), "
> -       << "File(" << getFile() << "), "
> -       << "Line(" << getLine() << "), "
> -       << "FromType(" << getFromType() << "), "
> -       << "Elements.size(" << Elements.size() << "),"
> -       << "Flags(" << Flags << ")\n";
> -}
> -#endif
> -
> -//===----------------------------------------------------------------------===//
> -
> -SubrangeDesc::SubrangeDesc()
> -: DebugInfoDesc(DW_TAG_subrange_type)
> -, Lo(0)
> -, Hi(0)
> -{}
> -
> -// Implement isa/cast/dyncast.
> -bool SubrangeDesc::classof(const DebugInfoDesc *D) {
> -  return D->getTag() == DW_TAG_subrange_type;
> -}
> -
> -/// ApplyToFields - Target the visitor to the fields of the SubrangeDesc.
> -///
> -void SubrangeDesc::ApplyToFields(DIVisitor *Visitor) {
> -  DebugInfoDesc::ApplyToFields(Visitor);
> -
> -  Visitor->Apply(Lo);
> -  Visitor->Apply(Hi);
> -}
> -
> -/// getDescString - Return a string used to compose global names and labels.
> -///
> -const char *SubrangeDesc::getDescString() const {
> -  return "llvm.dbg.subrange";
> -}
> -
> -/// getTypeString - Return a string used to label this descriptor's type.
> -///
> -const char *SubrangeDesc::getTypeString() const {
> -  return "llvm.dbg.subrange.type";
> -}
> -
> -#ifndef NDEBUG
> -void SubrangeDesc::dump() {
> -  cerr << getDescString() << " "
> -       << "Version(" << getVersion() << "), "
> -       << "Tag(" << getTag() << "), "
> -       << "Lo(" << Lo << "), "
> -       << "Hi(" << Hi << ")\n";
> -}
> -#endif
> -
> -//===----------------------------------------------------------------------===//
> -
> -EnumeratorDesc::EnumeratorDesc()
> -: DebugInfoDesc(DW_TAG_enumerator)
> -, Name("")
> -, Value(0)
> -{}
> -
> -// Implement isa/cast/dyncast.
> -bool EnumeratorDesc::classof(const DebugInfoDesc *D) {
> -  return D->getTag() == DW_TAG_enumerator;
> -}
> -
> -/// ApplyToFields - Target the visitor to the fields of the EnumeratorDesc.
> -///
> -void EnumeratorDesc::ApplyToFields(DIVisitor *Visitor) {
> -  DebugInfoDesc::ApplyToFields(Visitor);
> -
> -  Visitor->Apply(Name);
> -  Visitor->Apply(Value);
> -}
> -
> -/// getDescString - Return a string used to compose global names and labels.
> -///
> -const char *EnumeratorDesc::getDescString() const {
> -  return "llvm.dbg.enumerator";
> -}
> -
> -/// getTypeString - Return a string used to label this descriptor's type.
> -///
> -const char *EnumeratorDesc::getTypeString() const {
> -  return "llvm.dbg.enumerator.type";
> -}
> -
> -#ifndef NDEBUG
> -void EnumeratorDesc::dump() {
> -  cerr << getDescString() << " "
> -       << "Version(" << getVersion() << "), "
> -       << "Tag(" << getTag() << "), "
> -       << "Name(" << Name << "), "
> -       << "Value(" << Value << ")\n";
> -}
> -#endif
> -
> -//===----------------------------------------------------------------------===//
> -
> -VariableDesc::VariableDesc(unsigned T)
> -: DebugInfoDesc(T)
> -, Context(NULL)
> -, Name("")
> -, File(NULL)
> -, Line(0)
> -, TyDesc(0)
> -{}
> -
> -// Implement isa/cast/dyncast.
> -bool VariableDesc::classof(const DebugInfoDesc *D) {
> -  unsigned T =  D->getTag();
> -  switch (T) {
> -  case DW_TAG_auto_variable:
> -  case DW_TAG_arg_variable:
> -  case DW_TAG_return_variable:
> -    return true;
> -  default: break;
> -  }
> -  return false;
> -}
> -
> -/// ApplyToFields - Target the visitor to the fields of the VariableDesc.
> -///
> -void VariableDesc::ApplyToFields(DIVisitor *Visitor) {
> -  DebugInfoDesc::ApplyToFields(Visitor);
> -
> -  Visitor->Apply(Context);
> -  Visitor->Apply(Name);
> -  Visitor->Apply(File);
> -  Visitor->Apply(Line);
> -  Visitor->Apply(TyDesc);
> -}
> -
> -/// getDescString - Return a string used to compose global names and labels.
> -///
> -const char *VariableDesc::getDescString() const {
> -  return "llvm.dbg.variable";
> -}
> -
> -/// getTypeString - Return a string used to label this descriptor's type.
> -///
> -const char *VariableDesc::getTypeString() const {
> -  return "llvm.dbg.variable.type";
> -}
> -
> -#ifndef NDEBUG
> -void VariableDesc::dump() {
> -  cerr << getDescString() << " "
> -       << "Version(" << getVersion() << "), "
> -       << "Tag(" << getTag() << "), "
> -       << "Context(" << Context << "), "
> -       << "Name(\"" << Name << "\"), "
> -       << "File(" << File << "), "
> -       << "Line(" << Line << "), "
> -       << "TyDesc(" << TyDesc << ")\n";
> -}
> -#endif
> -
> -//===----------------------------------------------------------------------===//
> -
> -GlobalDesc::GlobalDesc(unsigned T)
> -: AnchoredDesc(T)
> -, Context(0)
> -, Name("")
> -, FullName("")
> -, LinkageName("")
> -, File(NULL)
> -, Line(0)
> -, TyDesc(NULL)
> -, IsStatic(false)
> -, IsDefinition(false)
> -{}
> -
> -/// ApplyToFields - Target the visitor to the fields of the global.
> -///
> -void GlobalDesc::ApplyToFields(DIVisitor *Visitor) {
> -  AnchoredDesc::ApplyToFields(Visitor);
> -
> -  Visitor->Apply(Context);
> -  Visitor->Apply(Name);
> -  Visitor->Apply(FullName);
> -  Visitor->Apply(LinkageName);
> -  Visitor->Apply(File);
> -  Visitor->Apply(Line);
> -  Visitor->Apply(TyDesc);
> -  Visitor->Apply(IsStatic);
> -  Visitor->Apply(IsDefinition);
> -}
> -
> -//===----------------------------------------------------------------------===//
> -
> -GlobalVariableDesc::GlobalVariableDesc()
> -: GlobalDesc(DW_TAG_variable)
> -, Global(NULL)
> -{}
> -
> -// Implement isa/cast/dyncast.
> -bool GlobalVariableDesc::classof(const DebugInfoDesc *D) {
> -  return D->getTag() == DW_TAG_variable;
> -}
> -
> -/// ApplyToFields - Target the visitor to the fields of the GlobalVariableDesc.
> -///
> -void GlobalVariableDesc::ApplyToFields(DIVisitor *Visitor) {
> -  GlobalDesc::ApplyToFields(Visitor);
> -
> -  Visitor->Apply(Global);
> -}
> -
> -/// getDescString - Return a string used to compose global names and labels.
> -///
> -const char *GlobalVariableDesc::getDescString() const {
> -  return "llvm.dbg.global_variable";
> -}
> -
> -/// getTypeString - Return a string used to label this descriptors type.
> -///
> -const char *GlobalVariableDesc::getTypeString() const {
> -  return "llvm.dbg.global_variable.type";
> -}
> -
> -/// getAnchorString - Return a string used to label this descriptor's anchor.
> -///
> -const char *const GlobalVariableDesc::AnchorString = "llvm.dbg.global_variables";
> -const char *GlobalVariableDesc::getAnchorString() const {
> -  return AnchorString;
> -}
> -
> -#ifndef NDEBUG
> -void GlobalVariableDesc::dump() {
> -  cerr << getDescString() << " "
> -       << "Version(" << getVersion() << "), "
> -       << "Tag(" << getTag() << "), "
> -       << "Anchor(" << getAnchor() << "), "
> -       << "Name(\"" << getName() << "\"), "
> -       << "FullName(\"" << getFullName() << "\"), "
> -       << "LinkageName(\"" << getLinkageName() << "\"), "
> -       << "File(" << getFile() << "),"
> -       << "Line(" << getLine() << "),"
> -       << "Type(" << getType() << "), "
> -       << "IsStatic(" << (isStatic() ? "true" : "false") << "), "
> -       << "IsDefinition(" << (isDefinition() ? "true" : "false") << "), "
> -       << "Global(" << Global << ")\n";
> -}
> -#endif
> -
> -//===----------------------------------------------------------------------===//
> -
> -SubprogramDesc::SubprogramDesc()
> -: GlobalDesc(DW_TAG_subprogram)
> -{}
> -
> -// Implement isa/cast/dyncast.
> -bool SubprogramDesc::classof(const DebugInfoDesc *D) {
> -  return D->getTag() == DW_TAG_subprogram;
> -}
> -
> -/// ApplyToFields - Target the visitor to the fields of the
> -/// SubprogramDesc.
> -void SubprogramDesc::ApplyToFields(DIVisitor *Visitor) {
> -  GlobalDesc::ApplyToFields(Visitor);
> -}
> -
> -/// getDescString - Return a string used to compose global names and labels.
> -///
> -const char *SubprogramDesc::getDescString() const {
> -  return "llvm.dbg.subprogram";
> -}
> -
> -/// getTypeString - Return a string used to label this descriptors type.
> -///
> -const char *SubprogramDesc::getTypeString() const {
> -  return "llvm.dbg.subprogram.type";
> -}
> -
> -/// getAnchorString - Return a string used to label this descriptor's anchor.
> -///
> -const char *const SubprogramDesc::AnchorString = "llvm.dbg.subprograms";
> -const char *SubprogramDesc::getAnchorString() const {
> -  return AnchorString;
> -}
> -
> -#ifndef NDEBUG
> -void SubprogramDesc::dump() {
> -  cerr << getDescString() << " "
> -       << "Version(" << getVersion() << "), "
> -       << "Tag(" << getTag() << "), "
> -       << "Anchor(" << getAnchor() << "), "
> -       << "Name(\"" << getName() << "\"), "
> -       << "FullName(\"" << getFullName() << "\"), "
> -       << "LinkageName(\"" << getLinkageName() << "\"), "
> -       << "File(" << getFile() << "),"
> -       << "Line(" << getLine() << "),"
> -       << "Type(" << getType() << "), "
> -       << "IsStatic(" << (isStatic() ? "true" : "false") << "), "
> -       << "IsDefinition(" << (isDefinition() ? "true" : "false") << ")\n";
> -}
> -#endif
> -
> -//===----------------------------------------------------------------------===//
> -
> -BlockDesc::BlockDesc()
> -: DebugInfoDesc(DW_TAG_lexical_block)
> -, Context(NULL)
> -{}
> -
> -// Implement isa/cast/dyncast.
> -bool BlockDesc::classof(const DebugInfoDesc *D) {
> -  return D->getTag() == DW_TAG_lexical_block;
> -}
> -
> -/// ApplyToFields - Target the visitor to the fields of the BlockDesc.
> -///
> -void BlockDesc::ApplyToFields(DIVisitor *Visitor) {
> -  DebugInfoDesc::ApplyToFields(Visitor);
> -
> -  Visitor->Apply(Context);
> -}
> -
> -/// getDescString - Return a string used to compose global names and labels.
> -///
> -const char *BlockDesc::getDescString() const {
> -  return "llvm.dbg.block";
> -}
> -
> -/// getTypeString - Return a string used to label this descriptors type.
> -///
> -const char *BlockDesc::getTypeString() const {
> -  return "llvm.dbg.block.type";
> -}
> -
> -#ifndef NDEBUG
> -void BlockDesc::dump() {
> -  cerr << getDescString() << " "
> -       << "Version(" << getVersion() << "), "
> -       << "Tag(" << getTag() << "),"
> -       << "Context(" << Context << ")\n";
> -}
> -#endif
> -
> -//===----------------------------------------------------------------------===//
> -
> -DebugInfoDesc *DIDeserializer::Deserialize(Value *V) {
> -  return Deserialize(getGlobalVariable(V));
> -}
> -DebugInfoDesc *DIDeserializer::Deserialize(GlobalVariable *GV) {
> -  // Handle NULL.
> -  if (!GV) return NULL;
> -
> -  // Check to see if it has been already deserialized.
> -  DebugInfoDesc *&Slot = GlobalDescs[GV];
> -  if (Slot) return Slot;
> -
> -  // Get the Tag from the global.
> -  unsigned Tag = DebugInfoDesc::TagFromGlobal(GV);
> -
> -  // Create an empty instance of the correct sort.
> -  Slot = DebugInfoDesc::DescFactory(Tag);
> -
> -  // If not a user defined descriptor.
> -  if (Slot) {
> -    // Deserialize the fields.
> -    DIDeserializeVisitor DRAM(*this, GV);
> -    DRAM.ApplyToFields(Slot);
> -  }
> -
> -  return Slot;
> -}
> -
> -//===----------------------------------------------------------------------===//
> -
> -/// getStrPtrType - Return a "sbyte *" type.
> -///
> -const PointerType *DISerializer::getStrPtrType() {
> -  // If not already defined.
> -  if (!StrPtrTy) {
> -    // Construct the pointer to signed bytes.
> -    StrPtrTy = PointerType::getUnqual(Type::Int8Ty);
> -  }
> -
> -  return StrPtrTy;
> -}
> -
> -/// getEmptyStructPtrType - Return a "{ }*" type.
> -///
> -const PointerType *DISerializer::getEmptyStructPtrType() {
> -  // If not already defined.
> -  if (EmptyStructPtrTy) return EmptyStructPtrTy;
> -
> -  // Construct the pointer to empty structure type.
> -  const StructType *EmptyStructTy = StructType::get(NULL, NULL);
> -
> -  // Construct the pointer to empty structure type.
> -  EmptyStructPtrTy = PointerType::getUnqual(EmptyStructTy);
> -  return EmptyStructPtrTy;
> -}
> -
> -/// getTagType - Return the type describing the specified descriptor (via tag.)
> -///
> -const StructType *DISerializer::getTagType(DebugInfoDesc *DD) {
> -  // Attempt to get the previously defined type.
> -  StructType *&Ty = TagTypes[DD->getTag()];
> -
> -  // If not already defined.
> -  if (!Ty) {
> -    // Set up fields vector.
> -    std::vector<const Type*> Fields;
> -    // Get types of fields.
> -    DIGetTypesVisitor GTAM(*this, Fields);
> -    GTAM.ApplyToFields(DD);
> -
> -    // Construct structured type.
> -    Ty = StructType::get(Fields);
> -
> -    // Register type name with module.
> -    M->addTypeName(DD->getTypeString(), Ty);
> -  }
> -
> -  return Ty;
> -}
> -
> -/// getString - Construct the string as constant string global.
> -///
> -Constant *DISerializer::getString(const std::string &String) {
> -  // Check string cache for previous edition.
> -  Constant *&Slot = StringCache[String];
> -
> -  // Return Constant if previously defined.
> -  if (Slot) return Slot;
> -
> -  // If empty string then use a sbyte* null instead.
> -  if (String.empty()) {
> -    Slot = ConstantPointerNull::get(getStrPtrType());
> -  } else {
> -    // Construct string as an llvm constant.
> -    Constant *ConstStr = ConstantArray::get(String);
> -
> -    // Otherwise create and return a new string global.
> -    GlobalVariable *StrGV = new GlobalVariable(ConstStr->getType(), true,
> -                                               GlobalVariable::InternalLinkage,
> -                                               ConstStr, ".str", M);
> -    StrGV->setSection("llvm.metadata");
> -
> -    // Convert to generic string pointer.
> -    Slot = ConstantExpr::getBitCast(StrGV, getStrPtrType());
> -  }
> -
> -  return Slot;
> -
> -}
> -
> -/// Serialize - Recursively cast the specified descriptor into a GlobalVariable
> -/// so that it can be serialized to a .bc or .ll file.
> -GlobalVariable *DISerializer::Serialize(DebugInfoDesc *DD) {
> -  // Check if the DebugInfoDesc is already in the map.
> -  GlobalVariable *&Slot = DescGlobals[DD];
> -
> -  // See if DebugInfoDesc exists, if so return prior GlobalVariable.
> -  if (Slot) return Slot;
> -
> -  // Get the type associated with the Tag.
> -  const StructType *Ty = getTagType(DD);
> -
> -  // Create the GlobalVariable early to prevent infinite recursion.
> -  GlobalVariable *GV = new GlobalVariable(Ty, true, DD->getLinkage(),
> -                                          NULL, DD->getDescString(), M);
> -  GV->setSection("llvm.metadata");
> -
> -  // Insert new GlobalVariable in DescGlobals map.
> -  Slot = GV;
> -
> -  // Set up elements vector
> -  std::vector<Constant*> Elements;
> -  // Add fields.
> -  DISerializeVisitor SRAM(*this, Elements);
> -  SRAM.ApplyToFields(DD);
> -
> -  // Set the globals initializer.
> -  GV->setInitializer(ConstantStruct::get(Ty, Elements));
> -
> -  return GV;
> -}
> -
> -/// addDescriptor - Directly connect DD with existing GV.
> -void DISerializer::addDescriptor(DebugInfoDesc *DD,
> -                                 GlobalVariable *GV) {
> -  DescGlobals[DD] = GV;
> -}
> -
> -//===----------------------------------------------------------------------===//
> -
> -/// Verify - Return true if the GlobalVariable appears to be a valid
> -/// serialization of a DebugInfoDesc.
> -bool DIVerifier::Verify(Value *V) {
> -  return !V || Verify(getGlobalVariable(V));
> -}
> -bool DIVerifier::Verify(GlobalVariable *GV) {
> -  // NULLs are valid.
> -  if (!GV) return true;
> -
> -  // Check prior validity.
> -  unsigned &ValiditySlot = Validity[GV];
> -
> -  // If visited before then use old state.
> -  if (ValiditySlot) return ValiditySlot == Valid;
> -
> -  // Assume validity for the time being (recursion.)
> -  ValiditySlot = Valid;
> -
> -  // Make sure the global is internal or link once (anchor.)
> -  if (GV->getLinkage() != GlobalValue::InternalLinkage &&
> -      GV->getLinkage() != GlobalValue::LinkOnceLinkage) {
> -    ValiditySlot = Invalid;
> -    return false;
> -  }
> -
> -  // Get the Tag.
> -  unsigned Tag = DebugInfoDesc::TagFromGlobal(GV);
> -
> -  // Check for user defined descriptors.
> -  if (Tag == DW_TAG_invalid) {
> -    ValiditySlot = Valid;
> -    return true;
> -  }
> -
> -  // Get the Version.
> -  unsigned Version = DebugInfoDesc::VersionFromGlobal(GV);
> -
> -  // Check for version mismatch.
> -  if (Version != LLVMDebugVersion) {
> -    ValiditySlot = Invalid;
> -    return false;
> -  }
> -
> -  // Construct an empty DebugInfoDesc.
> -  DebugInfoDesc *DD = DebugInfoDesc::DescFactory(Tag);
> -
> -  // Allow for user defined descriptors.
> -  if (!DD) return true;
> -
> -  // Get the initializer constant.
> -  ConstantStruct *CI = cast<ConstantStruct>(GV->getInitializer());
> -
> -  // Get the operand count.
> -  unsigned N = CI->getNumOperands();
> -
> -  // Get the field count.
> -  unsigned &CountSlot = Counts[Tag];
> -
> -  if (!CountSlot)
> -    // Check the operand count to the field count
> -    CountSlot = CountFields(DD);
> -
> -  // Field count must be at most equal operand count.
> -  if (CountSlot >  N) {
> -    delete DD;
> -    ValiditySlot = Invalid;
> -    return false;
> -  }
> -
> -  // Check each field for valid type.
> -  DIVerifyVisitor VRAM(*this, GV);
> -  VRAM.ApplyToFields(DD);
> -
> -  // Release empty DebugInfoDesc.
> -  delete DD;
> -
> -  // If fields are not valid.
> -  if (!VRAM.isValid()) {
> -    ValiditySlot = Invalid;
> -    return false;
> -  }
> -
> -  return true;
> -}
> -
> -/// isVerified - Return true if the specified GV has already been
> -/// verified as a debug information descriptor.
> -bool DIVerifier::isVerified(GlobalVariable *GV) {
> -  unsigned &ValiditySlot = Validity[GV];
> -  if (ValiditySlot) return ValiditySlot == Valid;
> -  return false;
> -}
> -
> -//===----------------------------------------------------------------------===//
> -
> -DebugScope::~DebugScope() {
> -  for (unsigned i = 0, N = Scopes.size(); i < N; ++i) delete Scopes[i];
> -  for (unsigned j = 0, M = Variables.size(); j < M; ++j) delete Variables[j];
> -}
> -
> -//===----------------------------------------------------------------------===//
> -
>  MachineModuleInfo::MachineModuleInfo()
>  : ImmutablePass(&ID)
> -, DR()
> -, VR()
> -, CompileUnits()
> -, Directories()
> -, SourceFiles()
>  , Lines()
>  , LabelIDList()
> -, ScopeMap()
> -, RootScope(NULL)
>  , FrameMoves()
>  , LandingPads()
>  , Personalities()
> @@ -1660,16 +73,6 @@
>  /// EndFunction - Discard function meta information.
>  ///
>  void MachineModuleInfo::EndFunction() {
> -  // Clean up scope information.
> -  if (RootScope) {
> -    delete RootScope;
> -    ScopeMap.clear();
> -    RootScope = NULL;
> -  }
> -
> -  // Clean up line info.
> -  Lines.clear();
> -
>    // Clean up frame info.
>    FrameMoves.clear();
>
> @@ -1682,18 +85,9 @@
>    CallsUnwindInit = 0;
>  }
>
> -/// getDescFor - Convert a Value to a debug information descriptor.
> -///
> -// FIXME - use new Value type when available.
> -DebugInfoDesc *MachineModuleInfo::getDescFor(Value *V) {
> -  return DR.Deserialize(V);
> -}
> -
>  /// AnalyzeModule - Scan the module for global debug information.
>  ///
>  void MachineModuleInfo::AnalyzeModule(Module &M) {
> -  SetupCompileUnits(M);
> -
>    // Insert functions in the llvm.used array into UsedFunctions.
>    GlobalVariable *GV = M.getGlobalVariable("llvm.used");
>    if (!GV || !GV->hasInitializer()) return;
> @@ -1710,111 +104,6 @@
>    }
>  }
>
> -/// SetupCompileUnits - Set up the unique vector of compile units.
> -///
> -void MachineModuleInfo::SetupCompileUnits(Module &M) {
> -  std::vector<CompileUnitDesc *> CU;
> -  getAnchoredDescriptors<CompileUnitDesc>(M, CU);
> -
> -  for (unsigned i = 0, N = CU.size(); i < N; i++) {
> -    CompileUnits.insert(CU[i]);
> -  }
> -}
> -
> -/// getCompileUnits - Return a vector of debug compile units.
> -///
> -const UniqueVector<CompileUnitDesc *> MachineModuleInfo::getCompileUnits()const{
> -  return CompileUnits;
> -}
> -
> -/// getGlobalVariablesUsing - Return all of the GlobalVariables that use the
> -/// named GlobalVariable.
> -void
> -MachineModuleInfo::getGlobalVariablesUsing(Module &M,
> -                                           const std::string &RootName,
> -                                           std::vector<GlobalVariable*>&Result){
> -  return ::getGlobalVariablesUsing(M, RootName, Result);
> -}
> -
> -/// RecordSourceLine - Records location information and associates it with a
> -/// debug label.  Returns a unique label ID used to generate a label and
> -/// provide correspondence to the source line list.
> -unsigned MachineModuleInfo::RecordSourceLine(unsigned Line, unsigned Column,
> -                                             unsigned Source) {
> -  unsigned ID = NextLabelID();
> -  Lines.push_back(SourceLineInfo(Line, Column, Source, ID));
> -  return ID;
> -}
> -
> -/// RecordSource - Register a source file with debug info. Returns an source
> -/// ID.
> -unsigned MachineModuleInfo::RecordSource(const std::string &Directory,
> -                                         const std::string &Source) {
> -  unsigned DirectoryID = Directories.insert(Directory);
> -  return SourceFiles.insert(SourceFileInfo(DirectoryID, Source));
> -}
> -unsigned MachineModuleInfo::RecordSource(const CompileUnitDesc *CompileUnit) {
> -  return RecordSource(CompileUnit->getDirectory(),
> -                      CompileUnit->getFileName());
> -}
> -
> -/// RecordRegionStart - Indicate the start of a region.
> -///
> -unsigned MachineModuleInfo::RecordRegionStart(Value *V) {
> -  // FIXME - need to be able to handle split scopes because of bb cloning.
> -  DebugInfoDesc *ScopeDesc = DR.Deserialize(V);
> -  DebugScope *Scope = getOrCreateScope(ScopeDesc);
> -  unsigned ID = NextLabelID();
> -  if (!Scope->getStartLabelID()) Scope->setStartLabelID(ID);
> -  return ID;
> -}
> -
> -/// RecordRegionEnd - Indicate the end of a region.
> -///
> -unsigned MachineModuleInfo::RecordRegionEnd(Value *V) {
> -  // FIXME - need to be able to handle split scopes because of bb cloning.
> -  DebugInfoDesc *ScopeDesc = DR.Deserialize(V);
> -  DebugScope *Scope = getOrCreateScope(ScopeDesc);
> -  unsigned ID = NextLabelID();
> -  Scope->setEndLabelID(ID);
> -  return ID;
> -}
> -
> -/// RecordVariable - Indicate the declaration of  a local variable.
> -///
> -void MachineModuleInfo::RecordVariable(GlobalValue *GV, unsigned FrameIndex) {
> -  VariableDesc *VD = cast<VariableDesc>(DR.Deserialize(GV));
> -  DebugScope *Scope = getOrCreateScope(VD->getContext());
> -  DebugVariable *DV = new DebugVariable(VD, FrameIndex);
> -  Scope->AddVariable(DV);
> -}
> -
> -/// getOrCreateScope - Returns the scope associated with the given descriptor.
> -///
> -DebugScope *MachineModuleInfo::getOrCreateScope(DebugInfoDesc *ScopeDesc) {
> -  DebugScope *&Slot = ScopeMap[ScopeDesc];
> -  if (!Slot) {
> -    // FIXME - breaks down when the context is an inlined function.
> -    DebugInfoDesc *ParentDesc = NULL;
> -    if (BlockDesc *Block = dyn_cast<BlockDesc>(ScopeDesc)) {
> -      ParentDesc = Block->getContext();
> -    }
> -    DebugScope *Parent = ParentDesc ? getOrCreateScope(ParentDesc) : NULL;
> -    Slot = new DebugScope(Parent, ScopeDesc);
> -    if (Parent) {
> -      Parent->AddScope(Slot);
> -    } else if (RootScope) {
> -      // FIXME - Add inlined function scopes to the root so we can delete
> -      // them later.  Long term, handle inlined functions properly.
> -      RootScope->AddScope(Slot);
> -    } else {
> -      // First function is top level function.
> -      RootScope = Slot;
> -    }
> -  }
> -  return Slot;
> -}
> -
>  //===-EH-------------------------------------------------------------------===//
>
>  /// getOrCreateLandingPadInfo - Find or create an LandingPadInfo for the
>
> Modified: llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp?rev=62199&r1=62198&r2=62199&view=diff
>
> ==============================================================================
> --- llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp (original)
> +++ llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp Tue Jan 13 17:54:55 2009
> @@ -2041,7 +2041,7 @@
>    GlobalVariable *GV = dyn_cast<GlobalVariable>(GA->getGlobal());
>    if (!GV) return false;
>    MachineModuleInfo *MMI = getMachineModuleInfo();
> -  return MMI && MMI->hasDebugInfo() && MMI->isVerified(GV);
> +  return MMI && MMI->hasDebugInfo();
>  }
>
>
>
>
> _______________________________________________
> llvm-commits mailing list
> llvm-commits at cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits
>   




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