[llvm] r238362 - Reapply "AsmPrinter: Change DIEValue to be stored by value"

Aaron Ballman aaron at aaronballman.com
Thu May 28 06:32:24 PDT 2015


This commit is generating a considerable number of warnings:

/opt/llvm/build-llvm/src/llvm/include/llvm/CodeGen/DIE.h:345:51:
warning: dereferencing type-punned pointer will break strict-aliasing
rules [-Wstrict-aliasing]
/opt/llvm/build-llvm/src/llvm/include/llvm/CodeGen/DIE.h: In
instantiation of ‘const T& llvm::DIEValue::get() const [with T =
llvm::DIEString]’:
/opt/llvm/build-llvm/src/llvm/include/llvm/CodeGen/DIEValue.def:35:1:
 required from here
/opt/llvm/build-llvm/src/llvm/include/llvm/CodeGen/DIE.h:345:51:
warning: dereferencing type-punned pointer will break strict-aliasing
rules [-Wstrict-aliasing]
/opt/llvm/build-llvm/src/llvm/include/llvm/CodeGen/DIE.h: In
instantiation of ‘const T& llvm::DIEValue::get() const [with T =
llvm::DIEExpr]’:
/opt/llvm/build-llvm/src/llvm/include/llvm/CodeGen/DIEValue.def:36:1:
 required from here
/opt/llvm/build-llvm/src/llvm/include/llvm/CodeGen/DIE.h:345:51:
warning: dereferencing type-punned pointer will break strict-aliasing
rules [-Wstrict-aliasing]
/opt/llvm/build-llvm/src/llvm/include/llvm/CodeGen/DIE.h: In
instantiation of ‘const T& llvm::DIEValue::get() const [with T =
llvm::DIELabel]’:
/opt/llvm/build-llvm/src/llvm/include/llvm/CodeGen/DIEValue.def:37:1:
 required from here
/opt/llvm/build-llvm/src/llvm/include/llvm/CodeGen/DIE.h:345:51:
warning: dereferencing type-punned pointer will break strict-aliasing
rules [-Wstrict-aliasing]
/opt/llvm/build-llvm/src/llvm/include/llvm/CodeGen/DIE.h: In
instantiation of ‘const T& llvm::DIEValue::get() const [with T = const
llvm::DIEDelta*]’:
/opt/llvm/build-llvm/src/llvm/include/llvm/CodeGen/DIEValue.def:38:1:
 required from here
/opt/llvm/build-llvm/src/llvm/include/llvm/CodeGen/DIE.h:345:51:
warning: dereferencing type-punned pointer will break strict-aliasing
rules [-Wstrict-aliasing]
/opt/llvm/build-llvm/src/llvm/include/llvm/CodeGen/DIE.h: In
instantiation of ‘const T& llvm::DIEValue::get() const [with T =
llvm::DIEEntry]’:
/opt/llvm/build-llvm/src/llvm/include/llvm/CodeGen/DIEValue.def:39:1:
 required from here
/opt/llvm/build-llvm/src/llvm/include/llvm/CodeGen/DIE.h:345:51:
warning: dereferencing type-punned pointer will break strict-aliasing
rules [-Wstrict-aliasing]
/opt/llvm/build-llvm/src/llvm/include/llvm/CodeGen/DIE.h: In
instantiation of ‘const T& llvm::DIEValue::get() const [with T =
llvm::DIETypeSignature]’:
/opt/llvm/build-llvm/src/llvm/include/llvm/CodeGen/DIEValue.def:40:1:
 required from here
/opt/llvm/build-llvm/src/llvm/include/llvm/CodeGen/DIE.h:345:51:
warning: dereferencing type-punned pointer will break strict-aliasing
rules [-Wstrict-aliasing]
/opt/llvm/build-llvm/src/llvm/include/llvm/CodeGen/DIE.h: In
instantiation of ‘const T& llvm::DIEValue::get() const [with T = const
llvm::DIEBlock*]’:
/opt/llvm/build-llvm/src/llvm/include/llvm/CodeGen/DIEValue.def:41:1:
 required from here
/opt/llvm/build-llvm/src/llvm/include/llvm/CodeGen/DIE.h:345:51:
warning: dereferencing type-punned pointer will break strict-aliasing
rules [-Wstrict-aliasing]
/opt/llvm/build-llvm/src/llvm/include/llvm/CodeGen/DIE.h: In
instantiation of ‘const T& llvm::DIEValue::get() const [with T = const
llvm::DIELoc*]’:
/opt/llvm/build-llvm/src/llvm/include/llvm/CodeGen/DIEValue.def:42:1:
 required from here
/opt/llvm/build-llvm/src/llvm/include/llvm/CodeGen/DIE.h:345:51:
warning: dereferencing type-punned pointer will break strict-aliasing
rules [-Wstrict-aliasing]
/opt/llvm/build-llvm/src/llvm/include/llvm/CodeGen/DIE.h: In
instantiation of ‘const T& llvm::DIEValue::get() const [with T =
llvm::DIELocList]’:
/opt/llvm/build-llvm/src/llvm/include/llvm/CodeGen/DIEValue.def:43:1:
 required from here

Can you please address these?

Thanks!

~Aaron

On Wed, May 27, 2015 at 6:14 PM, Duncan P. N. Exon Smith
<dexonsmith at apple.com> wrote:
> Author: dexonsmith
> Date: Wed May 27 17:14:58 2015
> New Revision: 238362
>
> URL: http://llvm.org/viewvc/llvm-project?rev=238362&view=rev
> Log:
> Reapply "AsmPrinter: Change DIEValue to be stored by value"
>
> This reverts commit r238350, effectively reapplying r238349 after fixing
> (all?) the problems, all somehow related to how I was using
> `AlignedArrayCharUnion<>` inside `DIEValue`:
>
>   - MSVC can only handle `sizeof()` on types, not values.  Change the
>     assert.
>   - GCC doesn't know the `is_trivially_copyable` type trait.  Instead of
>     asserting it, add destructors.
>   - Call placement new even when constructing POD (i.e., the pointers).
>   - Instead of copying the char buffer, copy the casted classes.
>
> I've left in a couple of `static_assert`s that I think both MSVC and GCC
> know how to handle.  If the bots disagree with me, I'll remove them.
>
>   - Check that the constructed type is either standard layout or a
>     pointer.  This protects against a programming error: we really want
>     the "small" `DIEValue`s to be small and simple, so don't
>     accidentally change them not to be.
>   - Similarly, check that the size of the buffer is no bigger than a
>     `uint64_t` or a pointer.  (I thought checking against
>     `sizeof(uint64_t)` would be good enough, but Chandler suggested that
>     pointers might sometimes be bigger than that in the context of
>     sanitizers.)
>
> I've also committed r238359 in the meantime, which introduces a
> DIEValue.def to simplify dispatching between the various types (thanks
> to a review comment by David Blaikie).  Without that, this commit would
> be almost unintelligible.
>
> Here's the original commit message:
> --
> Change `DIEValue` to be stored/passed/etc. by value, instead of
> reference.  It's now a discriminated union, with a `Val` field storing
> the actual type.  The classes that used to inherit from `DIEValue` no
> longer do.  There are two categories of these:
>
>   - Small values fit in a single pointer and are stored by value.
>   - Large values require auxiliary storage, and are stored by reference.
>
> The only non-mechanical change is to tools/dsymutil/DwarfLinker.cpp.  It
> was relying on `DIEInteger`s being passed around by reference, so I
> replaced that assumption with a `PatchLocation` type that stores a safe
> reference to where the `DIEInteger` lives instead.
>
> This commit causes a temporary regression in memory usage, since I've
> left merging `DIEAbbrevData` into `DIEValue` for a follow-up commit.  I
> measured an increase from 845 MB to 879 MB, around 3.9%.  The follow-up
> drops it lower than the starting point, and I've only recently brought
> the memory this low anyway, so I'm committing these changes separately
> to keep them incremental.  (I also considered swapping the commits, but
> the other one first would cause a lot more code churn.)
>
> (I'm looking at `llc` memory usage on `verify-uselistorder.lto.opt.bc`;
> see r236629 for details.)
> --
>
> Modified:
>     llvm/trunk/include/llvm/CodeGen/DIE.h
>     llvm/trunk/include/llvm/CodeGen/DIEValue.def
>     llvm/trunk/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp
>     llvm/trunk/lib/CodeGen/AsmPrinter/DIE.cpp
>     llvm/trunk/lib/CodeGen/AsmPrinter/DIEHash.cpp
>     llvm/trunk/lib/CodeGen/AsmPrinter/DIEHash.h
>     llvm/trunk/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
>     llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
>     llvm/trunk/lib/CodeGen/AsmPrinter/DwarfFile.cpp
>     llvm/trunk/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
>     llvm/trunk/lib/CodeGen/AsmPrinter/DwarfUnit.h
>     llvm/trunk/tools/dsymutil/DwarfLinker.cpp
>     llvm/trunk/unittests/CodeGen/DIEHashTest.cpp
>
> Modified: llvm/trunk/include/llvm/CodeGen/DIE.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/CodeGen/DIE.h?rev=238362&r1=238361&r2=238362&view=diff
> ==============================================================================
> --- llvm/trunk/include/llvm/CodeGen/DIE.h (original)
> +++ llvm/trunk/include/llvm/CodeGen/DIE.h Wed May 27 17:14:58 2015
> @@ -105,53 +105,13 @@ public:
>  };
>
>  //===--------------------------------------------------------------------===//
> -/// DIEValue - A debug information entry value. Some of these roughly correlate
> -/// to DWARF attribute classes.
> -///
> -class DIEValue {
> -public:
> -  enum Type {
> -#define HANDLE_DIEVALUE(T) is##T,
> -#include "llvm/CodeGen/DIEValue.def"
> -  };
> -
> -private:
> -  /// Ty - Type of data stored in the value.
> -  ///
> -  Type Ty;
> -
> -protected:
> -  explicit DIEValue(Type T) : Ty(T) {}
> -  ~DIEValue() {}
> -
> -public:
> -  // Accessors
> -  Type getType() const { return Ty; }
> -
> -  /// EmitValue - Emit value via the Dwarf writer.
> -  ///
> -  void EmitValue(const AsmPrinter *AP, dwarf::Form Form) const;
> -
> -  /// SizeOf - Return the size of a value in bytes.
> -  ///
> -  unsigned SizeOf(const AsmPrinter *AP, dwarf::Form Form) const;
> -
> -#ifndef NDEBUG
> -  void print(raw_ostream &O) const;
> -  void dump() const;
> -#endif
> -};
> -
> -//===--------------------------------------------------------------------===//
>  /// DIEInteger - An integer value DIE.
>  ///
> -class DIEInteger : public DIEValue {
> -  friend DIEValue;
> -
> +class DIEInteger {
>    uint64_t Integer;
>
>  public:
> -  explicit DIEInteger(uint64_t I) : DIEValue(isInteger), Integer(I) {}
> +  explicit DIEInteger(uint64_t I) : Integer(I) {}
>
>    /// BestForm - Choose the best form for integer.
>    ///
> @@ -178,120 +138,91 @@ public:
>    uint64_t getValue() const { return Integer; }
>    void setValue(uint64_t Val) { Integer = Val; }
>
> -  // Implement isa/cast/dyncast.
> -  static bool classof(const DIEValue *I) { return I->getType() == isInteger; }
> -
> -private:
> -  void EmitValueImpl(const AsmPrinter *AP, dwarf::Form Form) const;
> -  unsigned SizeOfImpl(const AsmPrinter *AP, dwarf::Form Form) const;
> +  void EmitValue(const AsmPrinter *AP, dwarf::Form Form) const;
> +  unsigned SizeOf(const AsmPrinter *AP, dwarf::Form Form) const;
>
>  #ifndef NDEBUG
> -  void printImpl(raw_ostream &O) const;
> +  void print(raw_ostream &O) const;
>  #endif
>  };
>
>  //===--------------------------------------------------------------------===//
>  /// DIEExpr - An expression DIE.
>  //
> -class DIEExpr : public DIEValue {
> -  friend class DIEValue;
> -
> +class DIEExpr {
>    const MCExpr *Expr;
>
>  public:
> -  explicit DIEExpr(const MCExpr *E) : DIEValue(isExpr), Expr(E) {}
> +  explicit DIEExpr(const MCExpr *E) : Expr(E) {}
>
>    /// getValue - Get MCExpr.
>    ///
>    const MCExpr *getValue() const { return Expr; }
>
> -  // Implement isa/cast/dyncast.
> -  static bool classof(const DIEValue *E) { return E->getType() == isExpr; }
> -
> -private:
> -  void EmitValueImpl(const AsmPrinter *AP, dwarf::Form Form) const;
> -  unsigned SizeOfImpl(const AsmPrinter *AP, dwarf::Form Form) const;
> +  void EmitValue(const AsmPrinter *AP, dwarf::Form Form) const;
> +  unsigned SizeOf(const AsmPrinter *AP, dwarf::Form Form) const;
>
>  #ifndef NDEBUG
> -  void printImpl(raw_ostream &O) const;
> +  void print(raw_ostream &O) const;
>  #endif
>  };
>
>  //===--------------------------------------------------------------------===//
>  /// DIELabel - A label DIE.
>  //
> -class DIELabel : public DIEValue {
> -  friend class DIEValue;
> -
> +class DIELabel {
>    const MCSymbol *Label;
>
>  public:
> -  explicit DIELabel(const MCSymbol *L) : DIEValue(isLabel), Label(L) {}
> +  explicit DIELabel(const MCSymbol *L) : Label(L) {}
>
>    /// getValue - Get MCSymbol.
>    ///
>    const MCSymbol *getValue() const { return Label; }
>
> -  // Implement isa/cast/dyncast.
> -  static bool classof(const DIEValue *L) { return L->getType() == isLabel; }
> -
> -private:
> -  void EmitValueImpl(const AsmPrinter *AP, dwarf::Form Form) const;
> -  unsigned SizeOfImpl(const AsmPrinter *AP, dwarf::Form Form) const;
> +  void EmitValue(const AsmPrinter *AP, dwarf::Form Form) const;
> +  unsigned SizeOf(const AsmPrinter *AP, dwarf::Form Form) const;
>
>  #ifndef NDEBUG
> -  void printImpl(raw_ostream &O) const;
> +  void print(raw_ostream &O) const;
>  #endif
>  };
>
>  //===--------------------------------------------------------------------===//
>  /// DIEDelta - A simple label difference DIE.
>  ///
> -class DIEDelta : public DIEValue {
> -  friend class DIEValue;
> -
> +class DIEDelta {
>    const MCSymbol *LabelHi;
>    const MCSymbol *LabelLo;
>
>  public:
> -  DIEDelta(const MCSymbol *Hi, const MCSymbol *Lo)
> -      : DIEValue(isDelta), LabelHi(Hi), LabelLo(Lo) {}
> +  DIEDelta(const MCSymbol *Hi, const MCSymbol *Lo) : LabelHi(Hi), LabelLo(Lo) {}
>
> -  // Implement isa/cast/dyncast.
> -  static bool classof(const DIEValue *D) { return D->getType() == isDelta; }
> -
> -private:
> -  void EmitValueImpl(const AsmPrinter *AP, dwarf::Form Form) const;
> -  unsigned SizeOfImpl(const AsmPrinter *AP, dwarf::Form Form) const;
> +  void EmitValue(const AsmPrinter *AP, dwarf::Form Form) const;
> +  unsigned SizeOf(const AsmPrinter *AP, dwarf::Form Form) const;
>
>  #ifndef NDEBUG
> -  void printImpl(raw_ostream &O) const;
> +  void print(raw_ostream &O) const;
>  #endif
>  };
>
>  //===--------------------------------------------------------------------===//
>  /// DIEString - A container for string values.
>  ///
> -class DIEString : public DIEValue {
> -  friend class DIEValue;
> -
> +class DIEString {
>    DwarfStringPoolEntryRef S;
>
>  public:
> -  DIEString(DwarfStringPoolEntryRef S) : DIEValue(isString), S(S) {}
> +  DIEString(DwarfStringPoolEntryRef S) : S(S) {}
>
>    /// getString - Grab the string out of the object.
>    StringRef getString() const { return S.getString(); }
>
> -  // Implement isa/cast/dyncast.
> -  static bool classof(const DIEValue *D) { return D->getType() == isString; }
> -
> -private:
> -  void EmitValueImpl(const AsmPrinter *AP, dwarf::Form Form) const;
> -  unsigned SizeOfImpl(const AsmPrinter *AP, dwarf::Form Form) const;
> +  void EmitValue(const AsmPrinter *AP, dwarf::Form Form) const;
> +  unsigned SizeOf(const AsmPrinter *AP, dwarf::Form Form) const;
>
>  #ifndef NDEBUG
> -  void printImpl(raw_ostream &O) const;
> +  void print(raw_ostream &O) const;
>  #endif
>  };
>
> @@ -300,60 +231,48 @@ private:
>  /// this class can also be used as a proxy for a debug information entry not
>  /// yet defined (ie. types.)
>  class DIE;
> -class DIEEntry : public DIEValue {
> -  friend class DIEValue;
> +class DIEEntry {
> +  DIE *Entry;
>
> -  DIE &Entry;
> +  DIEEntry() = delete;
>
>  public:
> -  explicit DIEEntry(DIE &E) : DIEValue(isEntry), Entry(E) {
> -  }
> +  explicit DIEEntry(DIE &E) : Entry(&E) {}
>
> -  DIE &getEntry() const { return Entry; }
> +  DIE &getEntry() const { return *Entry; }
>
>    /// Returns size of a ref_addr entry.
>    static unsigned getRefAddrSize(const AsmPrinter *AP);
>
> -  // Implement isa/cast/dyncast.
> -  static bool classof(const DIEValue *E) { return E->getType() == isEntry; }
> -
> -private:
> -  void EmitValueImpl(const AsmPrinter *AP, dwarf::Form Form) const;
> -  unsigned SizeOfImpl(const AsmPrinter *AP, dwarf::Form Form) const {
> +  void EmitValue(const AsmPrinter *AP, dwarf::Form Form) const;
> +  unsigned SizeOf(const AsmPrinter *AP, dwarf::Form Form) const {
>      return Form == dwarf::DW_FORM_ref_addr ? getRefAddrSize(AP)
>                                             : sizeof(int32_t);
>    }
>
>  #ifndef NDEBUG
> -  void printImpl(raw_ostream &O) const;
> +  void print(raw_ostream &O) const;
>  #endif
>  };
>
>  //===--------------------------------------------------------------------===//
>  /// \brief A signature reference to a type unit.
> -class DIETypeSignature : public DIEValue {
> -  friend class DIEValue;
> +class DIETypeSignature {
> +  const DwarfTypeUnit *Unit;
>
> -  const DwarfTypeUnit &Unit;
> +  DIETypeSignature() = delete;
>
>  public:
> -  explicit DIETypeSignature(const DwarfTypeUnit &Unit)
> -      : DIEValue(isTypeSignature), Unit(Unit) {}
> +  explicit DIETypeSignature(const DwarfTypeUnit &Unit) : Unit(&Unit) {}
>
> -  // \brief Implement isa/cast/dyncast.
> -  static bool classof(const DIEValue *E) {
> -    return E->getType() == isTypeSignature;
> -  }
> -
> -private:
> -  void EmitValueImpl(const AsmPrinter *AP, dwarf::Form Form) const;
> -  unsigned SizeOfImpl(const AsmPrinter *AP, dwarf::Form Form) const {
> +  void EmitValue(const AsmPrinter *AP, dwarf::Form Form) const;
> +  unsigned SizeOf(const AsmPrinter *AP, dwarf::Form Form) const {
>      assert(Form == dwarf::DW_FORM_ref_sig8);
>      return 8;
>    }
>
>  #ifndef NDEBUG
> -  void printImpl(raw_ostream &O) const;
> +  void print(raw_ostream &O) const;
>  #endif
>  };
>
> @@ -361,27 +280,159 @@ private:
>  /// DIELocList - Represents a pointer to a location list in the debug_loc
>  /// section.
>  //
> -class DIELocList : public DIEValue {
> -  friend class DIEValue;
> -
> +class DIELocList {
>    // Index into the .debug_loc vector.
>    size_t Index;
>
>  public:
> -  DIELocList(size_t I) : DIEValue(isLocList), Index(I) {}
> +  DIELocList(size_t I) : Index(I) {}
>
>    /// getValue - Grab the current index out.
>    size_t getValue() const { return Index; }
>
> -  // Implement isa/cast/dyncast.
> -  static bool classof(const DIEValue *E) { return E->getType() == isLocList; }
> +  void EmitValue(const AsmPrinter *AP, dwarf::Form Form) const;
> +  unsigned SizeOf(const AsmPrinter *AP, dwarf::Form Form) const;
> +
> +#ifndef NDEBUG
> +  void print(raw_ostream &O) const;
> +#endif
> +};
> +
> +//===--------------------------------------------------------------------===//
> +/// DIEValue - A debug information entry value. Some of these roughly correlate
> +/// to DWARF attribute classes.
> +///
> +class DIEBlock;
> +class DIELoc;
> +class DIEValue {
> +public:
> +  enum Type {
> +    isNone,
> +#define HANDLE_DIEVALUE(T) is##T,
> +#include "llvm/CodeGen/DIEValue.def"
> +  };
>
>  private:
> -  void EmitValueImpl(const AsmPrinter *AP, dwarf::Form Form) const;
> -  unsigned SizeOfImpl(const AsmPrinter *AP, dwarf::Form Form) const;
> +  /// Ty - Type of data stored in the value.
> +  ///
> +  Type Ty;
> +
> +  /// Storage for the value.
> +  ///
> +  /// All values that aren't standard layout (or are larger than 8 bytes)
> +  /// should be stored by reference instead of by value.
> +  typedef AlignedCharArrayUnion<DIEInteger, DIEString, DIEExpr, DIELabel,
> +                                DIEDelta *, DIEEntry, DIETypeSignature,
> +                                DIEBlock *, DIELoc *, DIELocList> ValTy;
> +  static_assert(sizeof(ValTy) <= sizeof(uint64_t) ||
> +                    sizeof(ValTy) <= sizeof(void *),
> +                "Expected all large types to be stored via pointer");
> +
> +  /// Underlying stored value.
> +  ValTy Val;
> +
> +  template <class T> void construct(T V) {
> +    static_assert(std::is_standard_layout<T>::value ||
> +                      std::is_pointer<T>::value,
> +                  "Expected standard layout or pointer");
> +    new (reinterpret_cast<void *>(Val.buffer)) T(V);
> +  }
> +
> +  template <class T> T &get() { return *reinterpret_cast<T *>(Val.buffer); }
> +  template <class T> const T &get() const {
> +    return *reinterpret_cast<const T *>(Val.buffer);
> +  }
> +  template <class T> void destruct() { get<T>().~T(); }
> +
> +  /// Destroy the underlying value.
> +  ///
> +  /// This should get optimized down to a no-op.  We could skip it if we could
> +  /// add a static assert on \a std::is_trivially_copyable(), but we currently
> +  /// support versions of GCC that don't understand that.
> +  void destroyVal() {
> +    switch (Ty) {
> +    case isNone:
> +      return;
> +#define HANDLE_DIEVALUE_SMALL(T)                                               \
> +  case is##T:                                                                  \
> +    destruct<DIE##T>();
> +    return;
> +#define HANDLE_DIEVALUE_LARGE(T)                                               \
> +  case is##T:                                                                  \
> +    destruct<const DIE##T *>();
> +    return;
> +#include "llvm/CodeGen/DIEValue.def"
> +    }
> +  }
> +
> +  /// Copy the underlying value.
> +  ///
> +  /// This should get optimized down to a simple copy.  We need to actually
> +  /// construct the value, rather than calling memcpy, to satisfy strict
> +  /// aliasing rules.
> +  void copyVal(const DIEValue &X) {
> +    switch (Ty) {
> +    case isNone:
> +      return;
> +#define HANDLE_DIEVALUE_SMALL(T)                                               \
> +  case is##T:                                                                  \
> +    construct<DIE##T>(X.get<DIE##T>());                                        \
> +    return;
> +#define HANDLE_DIEVALUE_LARGE(T)                                               \
> +  case is##T:                                                                  \
> +    construct<const DIE##T *>(X.get<const DIE##T *>());                        \
> +    return;
> +#include "llvm/CodeGen/DIEValue.def"
> +    }
> +  }
> +
> +public:
> +  DIEValue() : Ty(isNone) {}
> +  DIEValue(const DIEValue &X) : Ty(X.Ty) { copyVal(X); }
> +  DIEValue &operator=(const DIEValue &X) {
> +    destroyVal();
> +    Ty = X.Ty;
> +    copyVal(X);
> +    return *this;
> +  }
> +  ~DIEValue() { destroyVal(); }
> +
> +#define HANDLE_DIEVALUE_SMALL(T)                                               \
> +  DIEValue(const DIE##T &V) : Ty(is##T) { construct<DIE##T>(V); }
> +#define HANDLE_DIEVALUE_LARGE(T)                                               \
> +  DIEValue(const DIE##T *V) : Ty(is##T) {                                      \
> +    assert(V && "Expected valid value");                                       \
> +    construct<const DIE##T *>(V);                                              \
> +  }
> +#include "llvm/CodeGen/DIEValue.def"
> +
> +  // Accessors
> +  Type getType() const { return Ty; }
> +  explicit operator bool() const { return Ty; }
> +
> +#define HANDLE_DIEVALUE_SMALL(T)                                               \
> +  const DIE##T &getDIE##T() const {                                            \
> +    assert(getType() == is##T && "Expected " #T);                              \
> +    return get<DIE##T>();                                                      \
> +  }
> +#define HANDLE_DIEVALUE_LARGE(T)                                               \
> +  const DIE##T &getDIE##T() const {                                            \
> +    assert(getType() == is##T && "Expected " #T);                              \
> +    return *get<const DIE##T *>();                                             \
> +  }
> +#include "llvm/CodeGen/DIEValue.def"
> +
> +  /// EmitValue - Emit value via the Dwarf writer.
> +  ///
> +  void EmitValue(const AsmPrinter *AP, dwarf::Form Form) const;
> +
> +  /// SizeOf - Return the size of a value in bytes.
> +  ///
> +  unsigned SizeOf(const AsmPrinter *AP, dwarf::Form Form) const;
>
>  #ifndef NDEBUG
> -  void printImpl(raw_ostream &O) const;
> +  void print(raw_ostream &O) const;
> +  void dump() const;
>  #endif
>  };
>
> @@ -416,7 +467,7 @@ protected:
>
>    /// Attribute values.
>    ///
> -  SmallVector<DIEValue *, 12> Values;
> +  SmallVector<DIEValue, 12> Values;
>
>  protected:
>    DIE()
> @@ -438,7 +489,11 @@ public:
>    const std::vector<std::unique_ptr<DIE>> &getChildren() const {
>      return Children;
>    }
> -  const SmallVectorImpl<DIEValue *> &getValues() const { return Values; }
> +  const SmallVectorImpl<DIEValue> &getValues() const { return Values; }
> +  void setValue(unsigned I, DIEValue New) {
> +    assert(I < Values.size());
> +    Values[I] = New;
> +  }
>    DIE *getParent() const { return Parent; }
>    /// Climb up the parent chain to get the compile or type unit DIE this DIE
>    /// belongs to.
> @@ -451,7 +506,7 @@ public:
>
>    /// addValue - Add a value and attributes to a DIE.
>    ///
> -  void addValue(dwarf::Attribute Attribute, dwarf::Form Form, DIEValue *Value) {
> +  void addValue(dwarf::Attribute Attribute, dwarf::Form Form, DIEValue Value) {
>      Abbrev.AddAttribute(Attribute, Form);
>      Values.push_back(Value);
>    }
> @@ -465,9 +520,11 @@ public:
>      Children.push_back(std::move(Child));
>    }
>
> -  /// findAttribute - Find a value in the DIE with the attribute given,
> -  /// returns NULL if no such attribute exists.
> -  DIEValue *findAttribute(dwarf::Attribute Attribute) const;
> +  /// Find a value in the DIE with the attribute given.
> +  ///
> +  /// Returns a default-constructed DIEValue (where \a DIEValue::getType()
> +  /// gives \a DIEValue::isNone) if no such attribute exists.
> +  DIEValue findAttribute(dwarf::Attribute Attribute) const;
>
>  #ifndef NDEBUG
>    void print(raw_ostream &O, unsigned IndentCount = 0) const;
> @@ -478,12 +535,11 @@ public:
>  //===--------------------------------------------------------------------===//
>  /// DIELoc - Represents an expression location.
>  //
> -class DIELoc : public DIEValue, public DIE {
> -  friend class DIEValue;
> -
> +class DIELoc : public DIE {
>    mutable unsigned Size; // Size in bytes excluding size header.
> +
>  public:
> -  DIELoc() : DIEValue(isLoc), Size(0) {}
> +  DIELoc() : Size(0) {}
>
>    /// ComputeSize - Calculate the size of the location expression.
>    ///
> @@ -504,27 +560,22 @@ public:
>      return dwarf::DW_FORM_block;
>    }
>
> -  // Implement isa/cast/dyncast.
> -  static bool classof(const DIEValue *E) { return E->getType() == isLoc; }
> -
> -private:
> -  void EmitValueImpl(const AsmPrinter *AP, dwarf::Form Form) const;
> -  unsigned SizeOfImpl(const AsmPrinter *AP, dwarf::Form Form) const;
> +  void EmitValue(const AsmPrinter *AP, dwarf::Form Form) const;
> +  unsigned SizeOf(const AsmPrinter *AP, dwarf::Form Form) const;
>
>  #ifndef NDEBUG
> -  void printImpl(raw_ostream &O) const;
> +  void print(raw_ostream &O) const;
>  #endif
>  };
>
>  //===--------------------------------------------------------------------===//
>  /// DIEBlock - Represents a block of values.
>  //
> -class DIEBlock : public DIEValue, public DIE {
> -  friend class DIEValue;
> -
> +class DIEBlock : public DIE {
>    mutable unsigned Size; // Size in bytes excluding size header.
> +
>  public:
> -  DIEBlock() : DIEValue(isBlock), Size(0) {}
> +  DIEBlock() : Size(0) {}
>
>    /// ComputeSize - Calculate the size of the location expression.
>    ///
> @@ -542,15 +593,11 @@ public:
>      return dwarf::DW_FORM_block;
>    }
>
> -  // Implement isa/cast/dyncast.
> -  static bool classof(const DIEValue *E) { return E->getType() == isBlock; }
> -
> -private:
> -  void EmitValueImpl(const AsmPrinter *AP, dwarf::Form Form) const;
> -  unsigned SizeOfImpl(const AsmPrinter *AP, dwarf::Form Form) const;
> +  void EmitValue(const AsmPrinter *AP, dwarf::Form Form) const;
> +  unsigned SizeOf(const AsmPrinter *AP, dwarf::Form Form) const;
>
>  #ifndef NDEBUG
> -  void printImpl(raw_ostream &O) const;
> +  void print(raw_ostream &O) const;
>  #endif
>  };
>
>
> Modified: llvm/trunk/include/llvm/CodeGen/DIEValue.def
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/CodeGen/DIEValue.def?rev=238362&r1=238361&r2=238362&view=diff
> ==============================================================================
> --- llvm/trunk/include/llvm/CodeGen/DIEValue.def (original)
> +++ llvm/trunk/include/llvm/CodeGen/DIEValue.def Wed May 27 17:14:58 2015
> @@ -11,19 +11,37 @@
>  //
>  //===----------------------------------------------------------------------===//
>
> -#if !(defined HANDLE_DIEVALUE)
> +#if !(defined HANDLE_DIEVALUE || defined HANDLE_DIEVALUE_SMALL ||              \
> +      defined HANDLE_DIEVALUE_LARGE)
>  #error "Missing macro definition of HANDLE_DIEVALUE"
>  #endif
>
> -HANDLE_DIEVALUE(Integer)
> -HANDLE_DIEVALUE(String)
> -HANDLE_DIEVALUE(Expr)
> -HANDLE_DIEVALUE(Label)
> -HANDLE_DIEVALUE(Delta)
> -HANDLE_DIEVALUE(Entry)
> -HANDLE_DIEVALUE(TypeSignature)
> -HANDLE_DIEVALUE(Block)
> -HANDLE_DIEVALUE(Loc)
> -HANDLE_DIEVALUE(LocList)
> +// Handler for all values.
> +#ifndef HANDLE_DIEVALUE
> +#define HANDLE_DIEVALUE(T)
> +#endif
> +
> +// Handler for small values.
> +#ifndef HANDLE_DIEVALUE_SMALL
> +#define HANDLE_DIEVALUE_SMALL(T) HANDLE_DIEVALUE(T)
> +#endif
> +
> +// Handler for large values.
> +#ifndef HANDLE_DIEVALUE_LARGE
> +#define HANDLE_DIEVALUE_LARGE(T) HANDLE_DIEVALUE(T)
> +#endif
> +
> +HANDLE_DIEVALUE_SMALL(Integer)
> +HANDLE_DIEVALUE_SMALL(String)
> +HANDLE_DIEVALUE_SMALL(Expr)
> +HANDLE_DIEVALUE_SMALL(Label)
> +HANDLE_DIEVALUE_LARGE(Delta)
> +HANDLE_DIEVALUE_SMALL(Entry)
> +HANDLE_DIEVALUE_SMALL(TypeSignature)
> +HANDLE_DIEVALUE_LARGE(Block)
> +HANDLE_DIEVALUE_LARGE(Loc)
> +HANDLE_DIEVALUE_SMALL(LocList)
>
>  #undef HANDLE_DIEVALUE
> +#undef HANDLE_DIEVALUE_SMALL
> +#undef HANDLE_DIEVALUE_LARGE
>
> Modified: llvm/trunk/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp?rev=238362&r1=238361&r2=238362&view=diff
> ==============================================================================
> --- llvm/trunk/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp (original)
> +++ llvm/trunk/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp Wed May 27 17:14:58 2015
> @@ -265,7 +265,7 @@ void AsmPrinter::emitDwarfDIE(const DIE
>                              dwarf::TagString(Abbrev.getTag()));
>    EmitULEB128(Abbrev.getNumber());
>
> -  const SmallVectorImpl<DIEValue *> &Values = Die.getValues();
> +  const SmallVectorImpl<DIEValue> &Values = Die.getValues();
>    const SmallVectorImpl<DIEAbbrevData> &AbbrevData = Abbrev.getData();
>
>    // Emit the DIE attribute values.
> @@ -277,12 +277,12 @@ void AsmPrinter::emitDwarfDIE(const DIE
>      if (isVerbose()) {
>        OutStreamer->AddComment(dwarf::AttributeString(Attr));
>        if (Attr == dwarf::DW_AT_accessibility)
> -        OutStreamer->AddComment(dwarf::AccessibilityString(
> -            cast<DIEInteger>(Values[i])->getValue()));
> +        OutStreamer->AddComment(
> +            dwarf::AccessibilityString(Values[i].getDIEInteger().getValue()));
>      }
>
>      // Emit an attribute using the defined form.
> -    Values[i]->EmitValue(this, Form);
> +    Values[i].EmitValue(this, Form);
>    }
>
>    // Emit the DIE children if any.
>
> Modified: llvm/trunk/lib/CodeGen/AsmPrinter/DIE.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/AsmPrinter/DIE.cpp?rev=238362&r1=238361&r2=238362&view=diff
> ==============================================================================
> --- llvm/trunk/lib/CodeGen/AsmPrinter/DIE.cpp (original)
> +++ llvm/trunk/lib/CodeGen/AsmPrinter/DIE.cpp Wed May 27 17:14:58 2015
> @@ -128,8 +128,8 @@ const DIE *DIE::getUnitOrNull() const {
>    return nullptr;
>  }
>
> -DIEValue *DIE::findAttribute(dwarf::Attribute Attribute) const {
> -  const SmallVectorImpl<DIEValue *> &Values = getValues();
> +DIEValue DIE::findAttribute(dwarf::Attribute Attribute) const {
> +  const SmallVectorImpl<DIEValue> &Values = getValues();
>    const DIEAbbrev &Abbrevs = getAbbrev();
>
>    // Iterate through all the attributes until we find the one we're
> @@ -137,7 +137,7 @@ DIEValue *DIE::findAttribute(dwarf::Attr
>    for (size_t i = 0; i < Values.size(); ++i)
>      if (Abbrevs.getData()[i].getAttribute() == Attribute)
>        return Values[i];
> -  return nullptr;
> +  return DIEValue();
>  }
>
>  #ifndef NDEBUG
> @@ -174,7 +174,7 @@ void DIE::print(raw_ostream &O, unsigned
>      O <<  "  "
>        << dwarf::FormEncodingString(Data[i].getForm())
>        << " ";
> -    Values[i]->print(O);
> +    Values[i].print(O);
>      O << "\n";
>    }
>    IndentCount -= 2;
> @@ -193,9 +193,11 @@ void DIE::dump() {
>
>  void DIEValue::EmitValue(const AsmPrinter *AP, dwarf::Form Form) const {
>    switch (Ty) {
> +  case isNone:
> +    llvm_unreachable("Expected valid DIEValue");
>  #define HANDLE_DIEVALUE(T)                                                     \
>    case is##T:                                                                  \
> -    cast<DIE##T>(this)->EmitValueImpl(AP, Form);                               \
> +    getDIE##T().EmitValue(AP, Form);                                           \
>      break;
>  #include "llvm/CodeGen/DIEValue.def"
>    }
> @@ -203,9 +205,11 @@ void DIEValue::EmitValue(const AsmPrinte
>
>  unsigned DIEValue::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const {
>    switch (Ty) {
> +  case isNone:
> +    llvm_unreachable("Expected valid DIEValue");
>  #define HANDLE_DIEVALUE(T)                                                     \
>    case is##T:                                                                  \
> -    return cast<DIE##T>(this)->SizeOfImpl(AP, Form);
> +    return getDIE##T().SizeOf(AP, Form);
>  #include "llvm/CodeGen/DIEValue.def"
>    }
>    llvm_unreachable("Unknown DIE kind");
> @@ -214,9 +218,11 @@ unsigned DIEValue::SizeOf(const AsmPrint
>  #ifndef NDEBUG
>  void DIEValue::print(raw_ostream &O) const {
>    switch (Ty) {
> +  case isNone:
> +    llvm_unreachable("Expected valid DIEValue");
>  #define HANDLE_DIEVALUE(T)                                                     \
>    case is##T:                                                                  \
> -    cast<DIE##T>(this)->printImpl(O);                                          \
> +    getDIE##T().print(O);                                                      \
>      break;
>  #include "llvm/CodeGen/DIEValue.def"
>    }
> @@ -233,7 +239,7 @@ void DIEValue::dump() const {
>
>  /// EmitValue - Emit integer of appropriate size.
>  ///
> -void DIEInteger::EmitValueImpl(const AsmPrinter *Asm, dwarf::Form Form) const {
> +void DIEInteger::EmitValue(const AsmPrinter *Asm, dwarf::Form Form) const {
>    unsigned Size = ~0U;
>    switch (Form) {
>    case dwarf::DW_FORM_flag_present:
> @@ -269,7 +275,7 @@ void DIEInteger::EmitValueImpl(const Asm
>
>  /// SizeOf - Determine size of integer value in bytes.
>  ///
> -unsigned DIEInteger::SizeOfImpl(const AsmPrinter *AP, dwarf::Form Form) const {
> +unsigned DIEInteger::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const {
>    switch (Form) {
>    case dwarf::DW_FORM_flag_present: return 0;
>    case dwarf::DW_FORM_flag:  // Fall thru
> @@ -298,7 +304,7 @@ unsigned DIEInteger::SizeOfImpl(const As
>  }
>
>  #ifndef NDEBUG
> -void DIEInteger::printImpl(raw_ostream &O) const {
> +void DIEInteger::print(raw_ostream &O) const {
>    O << "Int: " << (int64_t)Integer << "  0x";
>    O.write_hex(Integer);
>  }
> @@ -310,13 +316,13 @@ void DIEInteger::printImpl(raw_ostream &
>
>  /// EmitValue - Emit expression value.
>  ///
> -void DIEExpr::EmitValueImpl(const AsmPrinter *AP, dwarf::Form Form) const {
> +void DIEExpr::EmitValue(const AsmPrinter *AP, dwarf::Form Form) const {
>    AP->OutStreamer->EmitValue(Expr, SizeOf(AP, Form));
>  }
>
>  /// SizeOf - Determine size of expression value in bytes.
>  ///
> -unsigned DIEExpr::SizeOfImpl(const AsmPrinter *AP, dwarf::Form Form) const {
> +unsigned DIEExpr::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const {
>    if (Form == dwarf::DW_FORM_data4) return 4;
>    if (Form == dwarf::DW_FORM_sec_offset) return 4;
>    if (Form == dwarf::DW_FORM_strp) return 4;
> @@ -324,7 +330,7 @@ unsigned DIEExpr::SizeOfImpl(const AsmPr
>  }
>
>  #ifndef NDEBUG
> -void DIEExpr::printImpl(raw_ostream &O) const { O << "Expr: " << *Expr; }
> +void DIEExpr::print(raw_ostream &O) const { O << "Expr: " << *Expr; }
>  #endif
>
>  //===----------------------------------------------------------------------===//
> @@ -333,7 +339,7 @@ void DIEExpr::printImpl(raw_ostream &O)
>
>  /// EmitValue - Emit label value.
>  ///
> -void DIELabel::EmitValueImpl(const AsmPrinter *AP, dwarf::Form Form) const {
> +void DIELabel::EmitValue(const AsmPrinter *AP, dwarf::Form Form) const {
>    AP->EmitLabelReference(Label, SizeOf(AP, Form),
>                           Form == dwarf::DW_FORM_strp ||
>                               Form == dwarf::DW_FORM_sec_offset ||
> @@ -342,7 +348,7 @@ void DIELabel::EmitValueImpl(const AsmPr
>
>  /// SizeOf - Determine size of label value in bytes.
>  ///
> -unsigned DIELabel::SizeOfImpl(const AsmPrinter *AP, dwarf::Form Form) const {
> +unsigned DIELabel::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const {
>    if (Form == dwarf::DW_FORM_data4) return 4;
>    if (Form == dwarf::DW_FORM_sec_offset) return 4;
>    if (Form == dwarf::DW_FORM_strp) return 4;
> @@ -350,9 +356,7 @@ unsigned DIELabel::SizeOfImpl(const AsmP
>  }
>
>  #ifndef NDEBUG
> -void DIELabel::printImpl(raw_ostream &O) const {
> -  O << "Lbl: " << Label->getName();
> -}
> +void DIELabel::print(raw_ostream &O) const { O << "Lbl: " << Label->getName(); }
>  #endif
>
>  //===----------------------------------------------------------------------===//
> @@ -361,13 +365,13 @@ void DIELabel::printImpl(raw_ostream &O)
>
>  /// EmitValue - Emit delta value.
>  ///
> -void DIEDelta::EmitValueImpl(const AsmPrinter *AP, dwarf::Form Form) const {
> +void DIEDelta::EmitValue(const AsmPrinter *AP, dwarf::Form Form) const {
>    AP->EmitLabelDifference(LabelHi, LabelLo, SizeOf(AP, Form));
>  }
>
>  /// SizeOf - Determine size of delta value in bytes.
>  ///
> -unsigned DIEDelta::SizeOfImpl(const AsmPrinter *AP, dwarf::Form Form) const {
> +unsigned DIEDelta::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const {
>    if (Form == dwarf::DW_FORM_data4) return 4;
>    if (Form == dwarf::DW_FORM_sec_offset) return 4;
>    if (Form == dwarf::DW_FORM_strp) return 4;
> @@ -375,7 +379,7 @@ unsigned DIEDelta::SizeOfImpl(const AsmP
>  }
>
>  #ifndef NDEBUG
> -void DIEDelta::printImpl(raw_ostream &O) const {
> +void DIEDelta::print(raw_ostream &O) const {
>    O << "Del: " << LabelHi->getName() << "-" << LabelLo->getName();
>  }
>  #endif
> @@ -386,7 +390,7 @@ void DIEDelta::printImpl(raw_ostream &O)
>
>  /// EmitValue - Emit string value.
>  ///
> -void DIEString::EmitValueImpl(const AsmPrinter *AP, dwarf::Form Form) const {
> +void DIEString::EmitValue(const AsmPrinter *AP, dwarf::Form Form) const {
>    assert(
>        (Form == dwarf::DW_FORM_strp || Form == dwarf::DW_FORM_GNU_str_index) &&
>        "Expected valid string form");
> @@ -410,7 +414,7 @@ void DIEString::EmitValueImpl(const AsmP
>
>  /// SizeOf - Determine size of delta value in bytes.
>  ///
> -unsigned DIEString::SizeOfImpl(const AsmPrinter *AP, dwarf::Form Form) const {
> +unsigned DIEString::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const {
>    assert(
>        (Form == dwarf::DW_FORM_strp || Form == dwarf::DW_FORM_GNU_str_index) &&
>        "Expected valid string form");
> @@ -428,7 +432,7 @@ unsigned DIEString::SizeOfImpl(const Asm
>  }
>
>  #ifndef NDEBUG
> -void DIEString::printImpl(raw_ostream &O) const {
> +void DIEString::print(raw_ostream &O) const {
>    O << "String: " << S.getString();
>  }
>  #endif
> @@ -439,16 +443,16 @@ void DIEString::printImpl(raw_ostream &O
>
>  /// EmitValue - Emit debug information entry offset.
>  ///
> -void DIEEntry::EmitValueImpl(const AsmPrinter *AP, dwarf::Form Form) const {
> +void DIEEntry::EmitValue(const AsmPrinter *AP, dwarf::Form Form) const {
>
>    if (Form == dwarf::DW_FORM_ref_addr) {
>      const DwarfDebug *DD = AP->getDwarfDebug();
> -    unsigned Addr = Entry.getOffset();
> +    unsigned Addr = Entry->getOffset();
>      assert(!DD->useSplitDwarf() && "TODO: dwo files can't have relocations.");
>      // For DW_FORM_ref_addr, output the offset from beginning of debug info
>      // section. Entry->getOffset() returns the offset from start of the
>      // compile unit.
> -    DwarfCompileUnit *CU = DD->lookupUnit(Entry.getUnit());
> +    DwarfCompileUnit *CU = DD->lookupUnit(Entry->getUnit());
>      assert(CU && "CUDie should belong to a CU.");
>      Addr += CU->getDebugInfoOffset();
>      if (AP->MAI->doesDwarfUseRelocationsAcrossSections())
> @@ -457,7 +461,7 @@ void DIEEntry::EmitValueImpl(const AsmPr
>      else
>        AP->OutStreamer->EmitIntValue(Addr, DIEEntry::getRefAddrSize(AP));
>    } else
> -    AP->EmitInt32(Entry.getOffset());
> +    AP->EmitInt32(Entry->getOffset());
>  }
>
>  unsigned DIEEntry::getRefAddrSize(const AsmPrinter *AP) {
> @@ -473,7 +477,7 @@ unsigned DIEEntry::getRefAddrSize(const
>  }
>
>  #ifndef NDEBUG
> -void DIEEntry::printImpl(raw_ostream &O) const {
> +void DIEEntry::print(raw_ostream &O) const {
>    O << format("Die: 0x%lx", (long)(intptr_t)&Entry);
>  }
>  #endif
> @@ -481,14 +485,15 @@ void DIEEntry::printImpl(raw_ostream &O)
>  //===----------------------------------------------------------------------===//
>  // DIETypeSignature Implementation
>  //===----------------------------------------------------------------------===//
> -void DIETypeSignature::EmitValueImpl(const AsmPrinter *Asm, dwarf::Form Form) const {
> +void DIETypeSignature::EmitValue(const AsmPrinter *Asm,
> +                                 dwarf::Form Form) const {
>    assert(Form == dwarf::DW_FORM_ref_sig8);
> -  Asm->OutStreamer->EmitIntValue(Unit.getTypeSignature(), 8);
> +  Asm->OutStreamer->EmitIntValue(Unit->getTypeSignature(), 8);
>  }
>
>  #ifndef NDEBUG
> -void DIETypeSignature::printImpl(raw_ostream &O) const {
> -  O << format("Type Unit: 0x%lx", Unit.getTypeSignature());
> +void DIETypeSignature::print(raw_ostream &O) const {
> +  O << format("Type Unit: 0x%lx", Unit->getTypeSignature());
>  }
>  #endif
>
> @@ -502,7 +507,7 @@ unsigned DIELoc::ComputeSize(const AsmPr
>    if (!Size) {
>      const SmallVectorImpl<DIEAbbrevData> &AbbrevData = Abbrev.getData();
>      for (unsigned i = 0, N = Values.size(); i < N; ++i)
> -      Size += Values[i]->SizeOf(AP, AbbrevData[i].getForm());
> +      Size += Values[i].SizeOf(AP, AbbrevData[i].getForm());
>    }
>
>    return Size;
> @@ -510,7 +515,7 @@ unsigned DIELoc::ComputeSize(const AsmPr
>
>  /// EmitValue - Emit location data.
>  ///
> -void DIELoc::EmitValueImpl(const AsmPrinter *Asm, dwarf::Form Form) const {
> +void DIELoc::EmitValue(const AsmPrinter *Asm, dwarf::Form Form) const {
>    switch (Form) {
>    default: llvm_unreachable("Improper form for block");
>    case dwarf::DW_FORM_block1: Asm->EmitInt8(Size);    break;
> @@ -523,12 +528,12 @@ void DIELoc::EmitValueImpl(const AsmPrin
>
>    const SmallVectorImpl<DIEAbbrevData> &AbbrevData = Abbrev.getData();
>    for (unsigned i = 0, N = Values.size(); i < N; ++i)
> -    Values[i]->EmitValue(Asm, AbbrevData[i].getForm());
> +    Values[i].EmitValue(Asm, AbbrevData[i].getForm());
>  }
>
>  /// SizeOf - Determine size of location data in bytes.
>  ///
> -unsigned DIELoc::SizeOfImpl(const AsmPrinter *AP, dwarf::Form Form) const {
> +unsigned DIELoc::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const {
>    switch (Form) {
>    case dwarf::DW_FORM_block1: return Size + sizeof(int8_t);
>    case dwarf::DW_FORM_block2: return Size + sizeof(int16_t);
> @@ -541,7 +546,7 @@ unsigned DIELoc::SizeOfImpl(const AsmPri
>  }
>
>  #ifndef NDEBUG
> -void DIELoc::printImpl(raw_ostream &O) const {
> +void DIELoc::print(raw_ostream &O) const {
>    O << "ExprLoc: ";
>    DIE::print(O, 5);
>  }
> @@ -557,7 +562,7 @@ unsigned DIEBlock::ComputeSize(const Asm
>    if (!Size) {
>      const SmallVectorImpl<DIEAbbrevData> &AbbrevData = Abbrev.getData();
>      for (unsigned i = 0, N = Values.size(); i < N; ++i)
> -      Size += Values[i]->SizeOf(AP, AbbrevData[i].getForm());
> +      Size += Values[i].SizeOf(AP, AbbrevData[i].getForm());
>    }
>
>    return Size;
> @@ -565,7 +570,7 @@ unsigned DIEBlock::ComputeSize(const Asm
>
>  /// EmitValue - Emit block data.
>  ///
> -void DIEBlock::EmitValueImpl(const AsmPrinter *Asm, dwarf::Form Form) const {
> +void DIEBlock::EmitValue(const AsmPrinter *Asm, dwarf::Form Form) const {
>    switch (Form) {
>    default: llvm_unreachable("Improper form for block");
>    case dwarf::DW_FORM_block1: Asm->EmitInt8(Size);    break;
> @@ -576,12 +581,12 @@ void DIEBlock::EmitValueImpl(const AsmPr
>
>    const SmallVectorImpl<DIEAbbrevData> &AbbrevData = Abbrev.getData();
>    for (unsigned i = 0, N = Values.size(); i < N; ++i)
> -    Values[i]->EmitValue(Asm, AbbrevData[i].getForm());
> +    Values[i].EmitValue(Asm, AbbrevData[i].getForm());
>  }
>
>  /// SizeOf - Determine size of block data in bytes.
>  ///
> -unsigned DIEBlock::SizeOfImpl(const AsmPrinter *AP, dwarf::Form Form) const {
> +unsigned DIEBlock::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const {
>    switch (Form) {
>    case dwarf::DW_FORM_block1: return Size + sizeof(int8_t);
>    case dwarf::DW_FORM_block2: return Size + sizeof(int16_t);
> @@ -592,7 +597,7 @@ unsigned DIEBlock::SizeOfImpl(const AsmP
>  }
>
>  #ifndef NDEBUG
> -void DIEBlock::printImpl(raw_ostream &O) const {
> +void DIEBlock::print(raw_ostream &O) const {
>    O << "Blk: ";
>    DIE::print(O, 5);
>  }
> @@ -602,7 +607,7 @@ void DIEBlock::printImpl(raw_ostream &O)
>  // DIELocList Implementation
>  //===----------------------------------------------------------------------===//
>
> -unsigned DIELocList::SizeOfImpl(const AsmPrinter *AP, dwarf::Form Form) const {
> +unsigned DIELocList::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const {
>    if (Form == dwarf::DW_FORM_data4)
>      return 4;
>    if (Form == dwarf::DW_FORM_sec_offset)
> @@ -612,7 +617,7 @@ unsigned DIELocList::SizeOfImpl(const As
>
>  /// EmitValue - Emit label value.
>  ///
> -void DIELocList::EmitValueImpl(const AsmPrinter *AP, dwarf::Form Form) const {
> +void DIELocList::EmitValue(const AsmPrinter *AP, dwarf::Form Form) const {
>    DwarfDebug *DD = AP->getDwarfDebug();
>    MCSymbol *Label = DD->getDebugLocs().getList(Index).Label;
>
> @@ -623,8 +628,5 @@ void DIELocList::EmitValueImpl(const Asm
>  }
>
>  #ifndef NDEBUG
> -void DIELocList::printImpl(raw_ostream &O) const {
> -  O << "LocList: " << Index;
> -
> -}
> +void DIELocList::print(raw_ostream &O) const { O << "LocList: " << Index; }
>  #endif
>
> Modified: llvm/trunk/lib/CodeGen/AsmPrinter/DIEHash.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/AsmPrinter/DIEHash.cpp?rev=238362&r1=238361&r2=238362&view=diff
> ==============================================================================
> --- llvm/trunk/lib/CodeGen/AsmPrinter/DIEHash.cpp (original)
> +++ llvm/trunk/lib/CodeGen/AsmPrinter/DIEHash.cpp Wed May 27 17:14:58 2015
> @@ -31,18 +31,14 @@ using namespace llvm;
>  /// \brief Grabs the string in whichever attribute is passed in and returns
>  /// a reference to it.
>  static StringRef getDIEStringAttr(const DIE &Die, uint16_t Attr) {
> -  const SmallVectorImpl<DIEValue *> &Values = Die.getValues();
> +  const auto &Values = Die.getValues();
>    const DIEAbbrev &Abbrevs = Die.getAbbrev();
>
>    // Iterate through all the attributes until we find the one we're
>    // looking for, if we can't find it return an empty string.
>    for (size_t i = 0; i < Values.size(); ++i) {
> -    if (Abbrevs.getData()[i].getAttribute() == Attr) {
> -      DIEValue *V = Values[i];
> -      assert(isa<DIEString>(V) && "String requested. Not a string.");
> -      DIEString *S = cast<DIEString>(V);
> -      return S->getString();
> -    }
> +    if (Abbrevs.getData()[i].getAttribute() == Attr)
> +      return Values[i].getDIEString().getString();
>    }
>    return StringRef("");
>  }
> @@ -123,7 +119,7 @@ void DIEHash::addParentContext(const DIE
>
>  // Collect all of the attributes for a particular DIE in single structure.
>  void DIEHash::collectAttributes(const DIE &Die, DIEAttrs &Attrs) {
> -  const SmallVectorImpl<DIEValue *> &Values = Die.getValues();
> +  const SmallVectorImpl<DIEValue> &Values = Die.getValues();
>    const DIEAbbrev &Abbrevs = Die.getAbbrev();
>
>  #define COLLECT_ATTR(NAME)                                                     \
> @@ -274,11 +270,9 @@ void DIEHash::hashDIEEntry(dwarf::Attrib
>
>  // Hash all of the values in a block like set of values. This assumes that
>  // all of the data is going to be added as integers.
> -void DIEHash::hashBlockData(const SmallVectorImpl<DIEValue *> &Values) {
> -  for (SmallVectorImpl<DIEValue *>::const_iterator I = Values.begin(),
> -                                                   E = Values.end();
> -       I != E; ++I)
> -    Hash.update((uint64_t)cast<DIEInteger>(*I)->getValue());
> +void DIEHash::hashBlockData(const SmallVectorImpl<DIEValue> &Values) {
> +  for (auto I = Values.begin(), E = Values.end(); I != E; ++I)
> +    Hash.update((uint64_t)I->getDIEInteger().getValue());
>  }
>
>  // Hash the contents of a loclistptr class.
> @@ -293,7 +287,7 @@ void DIEHash::hashLocList(const DIELocLi
>  // Hash an individual attribute \param Attr based on the type of attribute and
>  // the form.
>  void DIEHash::hashAttribute(AttrEntry Attr, dwarf::Tag Tag) {
> -  const DIEValue *Value = Attr.Val;
> +  const DIEValue &Value = Attr.Val;
>    const DIEAbbrevData *Desc = Attr.Desc;
>    dwarf::Attribute Attribute = Desc->getAttribute();
>
> @@ -304,12 +298,15 @@ void DIEHash::hashAttribute(AttrEntry At
>    // computation is limited to the following: DW_FORM_sdata, DW_FORM_flag,
>    // DW_FORM_string, and DW_FORM_block.
>
> -  switch (Value->getType()) {
> +  switch (Value.getType()) {
> +  case DIEValue::isNone:
> +    llvm_unreachable("Expected valid DIEValue");
> +
>      // 7.27 Step 3
>      // ... An attribute that refers to another type entry T is processed as
>      // follows:
>    case DIEValue::isEntry:
> -    hashDIEEntry(Attribute, Tag, cast<DIEEntry>(Value)->getEntry());
> +    hashDIEEntry(Attribute, Tag, Value.getDIEEntry().getEntry());
>      break;
>    case DIEValue::isInteger: {
>      addULEB128('A');
> @@ -322,14 +319,14 @@ void DIEHash::hashAttribute(AttrEntry At
>      case dwarf::DW_FORM_udata:
>      case dwarf::DW_FORM_sdata:
>        addULEB128(dwarf::DW_FORM_sdata);
> -      addSLEB128((int64_t)cast<DIEInteger>(Value)->getValue());
> +      addSLEB128((int64_t)Value.getDIEInteger().getValue());
>        break;
>      // DW_FORM_flag_present is just flag with a value of one. We still give it a
>      // value so just use the value.
>      case dwarf::DW_FORM_flag_present:
>      case dwarf::DW_FORM_flag:
>        addULEB128(dwarf::DW_FORM_flag);
> -      addULEB128((int64_t)cast<DIEInteger>(Value)->getValue());
> +      addULEB128((int64_t)Value.getDIEInteger().getValue());
>        break;
>      default:
>        llvm_unreachable("Unknown integer form!");
> @@ -340,7 +337,7 @@ void DIEHash::hashAttribute(AttrEntry At
>      addULEB128('A');
>      addULEB128(Attribute);
>      addULEB128(dwarf::DW_FORM_string);
> -    addString(cast<DIEString>(Value)->getString());
> +    addString(Value.getDIEString().getString());
>      break;
>    case DIEValue::isBlock:
>    case DIEValue::isLoc:
> @@ -348,17 +345,17 @@ void DIEHash::hashAttribute(AttrEntry At
>      addULEB128('A');
>      addULEB128(Attribute);
>      addULEB128(dwarf::DW_FORM_block);
> -    if (isa<DIEBlock>(Value)) {
> -      addULEB128(cast<DIEBlock>(Value)->ComputeSize(AP));
> -      hashBlockData(cast<DIEBlock>(Value)->getValues());
> -    } else if (isa<DIELoc>(Value)) {
> -      addULEB128(cast<DIELoc>(Value)->ComputeSize(AP));
> -      hashBlockData(cast<DIELoc>(Value)->getValues());
> +    if (Value.getType() == DIEValue::isBlock) {
> +      addULEB128(Value.getDIEBlock().ComputeSize(AP));
> +      hashBlockData(Value.getDIEBlock().getValues());
> +    } else if (Value.getType() == DIEValue::isLoc) {
> +      addULEB128(Value.getDIELoc().ComputeSize(AP));
> +      hashBlockData(Value.getDIELoc().getValues());
>      } else {
>        // We could add the block length, but that would take
>        // a bit of work and not add a lot of uniqueness
>        // to the hash in some way we could test.
> -      hashLocList(*cast<DIELocList>(Value));
> +      hashLocList(Value.getDIELocList());
>      }
>      break;
>      // FIXME: It's uncertain whether or not we should handle this at the moment.
> @@ -375,7 +372,7 @@ void DIEHash::hashAttribute(AttrEntry At
>  void DIEHash::hashAttributes(const DIEAttrs &Attrs, dwarf::Tag Tag) {
>  #define ADD_ATTR(ATTR)                                                         \
>    {                                                                            \
> -    if (ATTR.Val != 0)                                                         \
> +    if (ATTR.Val)                                                              \
>        hashAttribute(ATTR, Tag);                                                \
>    }
>
>
> Modified: llvm/trunk/lib/CodeGen/AsmPrinter/DIEHash.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/AsmPrinter/DIEHash.h?rev=238362&r1=238361&r2=238362&view=diff
> ==============================================================================
> --- llvm/trunk/lib/CodeGen/AsmPrinter/DIEHash.h (original)
> +++ llvm/trunk/lib/CodeGen/AsmPrinter/DIEHash.h Wed May 27 17:14:58 2015
> @@ -29,7 +29,7 @@ class DIEHash {
>
>    // The entry for a particular attribute.
>    struct AttrEntry {
> -    const DIEValue *Val;
> +    DIEValue Val;
>      const DIEAbbrevData *Desc;
>    };
>
> @@ -135,7 +135,7 @@ private:
>
>    /// \brief Hashes the data in a block like DIEValue, e.g. DW_FORM_block or
>    /// DW_FORM_exprloc.
> -  void hashBlockData(const SmallVectorImpl<DIEValue *> &Values);
> +  void hashBlockData(const SmallVectorImpl<DIEValue> &Values);
>
>    /// \brief Hashes the contents pointed to in the .debug_loc section.
>    void hashLocList(const DIELocList &LocList);
>
> Modified: llvm/trunk/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp?rev=238362&r1=238361&r2=238362&view=diff
> ==============================================================================
> --- llvm/trunk/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp (original)
> +++ llvm/trunk/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp Wed May 27 17:14:58 2015
> @@ -42,8 +42,7 @@ void DwarfCompileUnit::addLabelAddress(D
>      DD->addArangeLabel(SymbolCU(this, Label));
>
>    unsigned idx = DD->getAddressPool().getIndex(Label);
> -  DIEValue *Value = new (DIEValueAllocator) DIEInteger(idx);
> -  Die.addValue(Attribute, dwarf::DW_FORM_GNU_addr_index, Value);
> +  Die.addValue(Attribute, dwarf::DW_FORM_GNU_addr_index, DIEInteger(idx));
>  }
>
>  void DwarfCompileUnit::addLocalLabelAddress(DIE &Die,
> @@ -53,8 +52,7 @@ void DwarfCompileUnit::addLocalLabelAddr
>      DD->addArangeLabel(SymbolCU(this, Label));
>
>    Die.addValue(Attribute, dwarf::DW_FORM_addr,
> -               Label ? (DIEValue *)new (DIEValueAllocator) DIELabel(Label)
> -                     : new (DIEValueAllocator) DIEInteger(0));
> +               Label ? DIEValue(DIELabel(Label)) : DIEValue(DIEInteger(0)));
>  }
>
>  unsigned DwarfCompileUnit::getOrCreateSourceID(StringRef FileName,
> @@ -145,7 +143,7 @@ DIE *DwarfCompileUnit::getOrCreateGlobal
>    bool addToAccelTable = false;
>    if (auto *Global = dyn_cast_or_null<GlobalVariable>(GV->getVariable())) {
>      addToAccelTable = true;
> -    DIELoc *Loc = new (DIEValueAllocator) DIELoc();
> +    DIELoc *Loc = new (DIEValueAllocator) DIELoc;
>      const MCSymbol *Sym = Asm->getSymbol(Global);
>      if (Global->isThreadLocal()) {
>        // FIXME: Make this work with -gsplit-dwarf.
> @@ -183,7 +181,7 @@ DIE *DwarfCompileUnit::getOrCreateGlobal
>    } else if (const ConstantExpr *CE = getMergedGlobalExpr(GV->getVariable())) {
>      addToAccelTable = true;
>      // GV is a merged global.
> -    DIELoc *Loc = new (DIEValueAllocator) DIELoc();
> +    DIELoc *Loc = new (DIEValueAllocator) DIELoc;
>      Value *Ptr = CE->getOperand(0);
>      MCSymbol *Sym = Asm->getSymbol(cast<GlobalValue>(Ptr));
>      DD->addArangeLabel(SymbolCU(this, Sym));
> @@ -365,10 +363,9 @@ void DwarfCompileUnit::constructScopeDIE
>
>  void DwarfCompileUnit::addSectionDelta(DIE &Die, dwarf::Attribute Attribute,
>                                         const MCSymbol *Hi, const MCSymbol *Lo) {
> -  DIEValue *Value = new (DIEValueAllocator) DIEDelta(Hi, Lo);
>    Die.addValue(Attribute, DD->getDwarfVersion() >= 4 ? dwarf::DW_FORM_sec_offset
>                                                       : dwarf::DW_FORM_data4,
> -               Value);
> +               new (DIEValueAllocator) DIEDelta(Hi, Lo));
>  }
>
>  void DwarfCompileUnit::addScopeRangeList(DIE &ScopeDIE,
> @@ -515,7 +512,7 @@ DwarfCompileUnit::constructVariableDIEIm
>      return VariableDie;
>
>    auto Expr = DV.getExpression().begin();
> -  DIELoc *Loc = new (DIEValueAllocator) DIELoc();
> +  DIELoc *Loc = new (DIEValueAllocator) DIELoc;
>    DIEDwarfExpression DwarfExpr(*Asm, *this, *Loc);
>    for (auto FI : DV.getFrameIndex()) {
>      unsigned FrameReg = 0;
> @@ -739,7 +736,7 @@ void DwarfCompileUnit::addVariableAddres
>  /// Add an address attribute to a die based on the location provided.
>  void DwarfCompileUnit::addAddress(DIE &Die, dwarf::Attribute Attribute,
>                                    const MachineLocation &Location) {
> -  DIELoc *Loc = new (DIEValueAllocator) DIELoc();
> +  DIELoc *Loc = new (DIEValueAllocator) DIELoc;
>
>    bool validReg;
>    if (Location.isReg())
> @@ -761,7 +758,7 @@ void DwarfCompileUnit::addAddress(DIE &D
>  void DwarfCompileUnit::addComplexAddress(const DbgVariable &DV, DIE &Die,
>                                           dwarf::Attribute Attribute,
>                                           const MachineLocation &Location) {
> -  DIELoc *Loc = new (DIEValueAllocator) DIELoc();
> +  DIELoc *Loc = new (DIEValueAllocator) DIELoc;
>    DIEDwarfExpression DwarfExpr(*Asm, *this, *Loc);
>    assert(DV.getExpression().size() == 1);
>    const DIExpression *Expr = DV.getExpression().back();
> @@ -782,10 +779,9 @@ void DwarfCompileUnit::addComplexAddress
>  /// Add a Dwarf loclistptr attribute data and value.
>  void DwarfCompileUnit::addLocationList(DIE &Die, dwarf::Attribute Attribute,
>                                         unsigned Index) {
> -  DIEValue *Value = new (DIEValueAllocator) DIELocList(Index);
>    dwarf::Form Form = DD->getDwarfVersion() >= 4 ? dwarf::DW_FORM_sec_offset
>                                                  : dwarf::DW_FORM_data4;
> -  Die.addValue(Attribute, Form, Value);
> +  Die.addValue(Attribute, Form, DIELocList(Index));
>  }
>
>  void DwarfCompileUnit::applyVariableAttributes(const DbgVariable &Var,
> @@ -802,8 +798,7 @@ void DwarfCompileUnit::applyVariableAttr
>  /// Add a Dwarf expression attribute data and value.
>  void DwarfCompileUnit::addExpr(DIELoc &Die, dwarf::Form Form,
>                                 const MCExpr *Expr) {
> -  DIEValue *Value = new (DIEValueAllocator) DIEExpr(Expr);
> -  Die.addValue((dwarf::Attribute)0, Form, Value);
> +  Die.addValue((dwarf::Attribute)0, Form, DIEExpr(Expr));
>  }
>
>  void DwarfCompileUnit::applySubprogramAttributesToDefinition(
>
> Modified: llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp?rev=238362&r1=238361&r2=238362&view=diff
> ==============================================================================
> --- llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp (original)
> +++ llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp Wed May 27 17:14:58 2015
> @@ -1340,9 +1340,8 @@ static dwarf::PubIndexEntryDescriptor co
>
>    // We could have a specification DIE that has our most of our knowledge,
>    // look for that now.
> -  DIEValue *SpecVal = Die->findAttribute(dwarf::DW_AT_specification);
> -  if (SpecVal) {
> -    DIE &SpecDIE = cast<DIEEntry>(SpecVal)->getEntry();
> +  if (DIEValue SpecVal = Die->findAttribute(dwarf::DW_AT_specification)) {
> +    DIE &SpecDIE = SpecVal.getDIEEntry().getEntry();
>      if (SpecDIE.findAttribute(dwarf::DW_AT_external))
>        Linkage = dwarf::GIEL_EXTERNAL;
>    } else if (Die->findAttribute(dwarf::DW_AT_external))
>
> Modified: llvm/trunk/lib/CodeGen/AsmPrinter/DwarfFile.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/AsmPrinter/DwarfFile.cpp?rev=238362&r1=238361&r2=238362&view=diff
> ==============================================================================
> --- llvm/trunk/lib/CodeGen/AsmPrinter/DwarfFile.cpp (original)
> +++ llvm/trunk/lib/CodeGen/AsmPrinter/DwarfFile.cpp Wed May 27 17:14:58 2015
> @@ -94,13 +94,13 @@ unsigned DwarfFile::computeSizeAndOffset
>    // Start the size with the size of abbreviation code.
>    Offset += getULEB128Size(Die.getAbbrevNumber());
>
> -  const SmallVectorImpl<DIEValue *> &Values = Die.getValues();
> +  const SmallVectorImpl<DIEValue> &Values = Die.getValues();
>    const SmallVectorImpl<DIEAbbrevData> &AbbrevData = Abbrev.getData();
>
>    // Size the DIE attribute values.
>    for (unsigned i = 0, N = Values.size(); i < N; ++i)
>      // Size attribute value.
> -    Offset += Values[i]->SizeOf(Asm, AbbrevData[i].getForm());
> +    Offset += Values[i].SizeOf(Asm, AbbrevData[i].getForm());
>
>    // Get the children.
>    const auto &Children = Die.getChildren();
>
> Modified: llvm/trunk/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/AsmPrinter/DwarfUnit.cpp?rev=238362&r1=238361&r2=238362&view=diff
> ==============================================================================
> --- llvm/trunk/lib/CodeGen/AsmPrinter/DwarfUnit.cpp (original)
> +++ llvm/trunk/lib/CodeGen/AsmPrinter/DwarfUnit.cpp Wed May 27 17:14:58 2015
> @@ -70,7 +70,6 @@ DwarfUnit::DwarfUnit(unsigned UID, dwarf
>        DD(DW), DU(DWU), IndexTyDie(nullptr), Section(nullptr) {
>    assert(UnitTag == dwarf::DW_TAG_compile_unit ||
>           UnitTag == dwarf::DW_TAG_type_unit);
> -  DIEIntegerOne = new (DIEValueAllocator) DIEInteger(1);
>  }
>
>  DwarfTypeUnit::DwarfTypeUnit(unsigned UID, DwarfCompileUnit &CU, AsmPrinter *A,
> @@ -89,11 +88,6 @@ DwarfUnit::~DwarfUnit() {
>      DIELocs[j]->~DIELoc();
>  }
>
> -DIEEntry *DwarfUnit::createDIEEntry(DIE &Entry) {
> -  DIEEntry *Value = new (DIEValueAllocator) DIEEntry(Entry);
> -  return Value;
> -}
> -
>  int64_t DwarfUnit::getDefaultLowerBound() const {
>    switch (getLanguage()) {
>    default:
> @@ -190,18 +184,16 @@ void DwarfUnit::insertDIE(const DINode *
>
>  void DwarfUnit::addFlag(DIE &Die, dwarf::Attribute Attribute) {
>    if (DD->getDwarfVersion() >= 4)
> -    Die.addValue(Attribute, dwarf::DW_FORM_flag_present, DIEIntegerOne);
> +    Die.addValue(Attribute, dwarf::DW_FORM_flag_present, DIEInteger(1));
>    else
> -    Die.addValue(Attribute, dwarf::DW_FORM_flag, DIEIntegerOne);
> +    Die.addValue(Attribute, dwarf::DW_FORM_flag, DIEInteger(1));
>  }
>
>  void DwarfUnit::addUInt(DIE &Die, dwarf::Attribute Attribute,
>                          Optional<dwarf::Form> Form, uint64_t Integer) {
>    if (!Form)
>      Form = DIEInteger::BestForm(false, Integer);
> -  DIEValue *Value = Integer == 1 ? DIEIntegerOne : new (DIEValueAllocator)
> -                        DIEInteger(Integer);
> -  Die.addValue(Attribute, *Form, Value);
> +  Die.addValue(Attribute, *Form, DIEInteger(Integer));
>  }
>
>  void DwarfUnit::addUInt(DIE &Block, dwarf::Form Form, uint64_t Integer) {
> @@ -212,8 +204,7 @@ void DwarfUnit::addSInt(DIE &Die, dwarf:
>                          Optional<dwarf::Form> Form, int64_t Integer) {
>    if (!Form)
>      Form = DIEInteger::BestForm(true, Integer);
> -  DIEValue *Value = new (DIEValueAllocator) DIEInteger(Integer);
> -  Die.addValue(Attribute, *Form, Value);
> +  Die.addValue(Attribute, *Form, DIEInteger(Integer));
>  }
>
>  void DwarfUnit::addSInt(DIELoc &Die, Optional<dwarf::Form> Form,
> @@ -225,14 +216,12 @@ void DwarfUnit::addString(DIE &Die, dwar
>                            StringRef String) {
>    Die.addValue(Attribute,
>                 isDwoUnit() ? dwarf::DW_FORM_GNU_str_index : dwarf::DW_FORM_strp,
> -               new (DIEValueAllocator)
>                 DIEString(DU->getStringPool().getEntry(*Asm, String)));
>  }
>
>  void DwarfUnit::addLabel(DIE &Die, dwarf::Attribute Attribute, dwarf::Form Form,
>                           const MCSymbol *Label) {
> -  DIEValue *Value = new (DIEValueAllocator) DIELabel(Label);
> -  Die.addValue(Attribute, Form, Value);
> +  Die.addValue(Attribute, Form, DIELabel(Label));
>  }
>
>  void DwarfUnit::addLabel(DIELoc &Die, dwarf::Form Form, const MCSymbol *Label) {
> @@ -265,12 +254,12 @@ void DwarfUnit::addOpAddress(DIELoc &Die
>
>  void DwarfUnit::addLabelDelta(DIE &Die, dwarf::Attribute Attribute,
>                                const MCSymbol *Hi, const MCSymbol *Lo) {
> -  DIEValue *Value = new (DIEValueAllocator) DIEDelta(Hi, Lo);
> -  Die.addValue(Attribute, dwarf::DW_FORM_data4, Value);
> +  Die.addValue(Attribute, dwarf::DW_FORM_data4,
> +               new (DIEValueAllocator) DIEDelta(Hi, Lo));
>  }
>
>  void DwarfUnit::addDIEEntry(DIE &Die, dwarf::Attribute Attribute, DIE &Entry) {
> -  addDIEEntry(Die, Attribute, createDIEEntry(Entry));
> +  addDIEEntry(Die, Attribute, DIEEntry(Entry));
>  }
>
>  void DwarfUnit::addDIETypeSignature(DIE &Die, const DwarfTypeUnit &Type) {
> @@ -281,13 +270,13 @@ void DwarfUnit::addDIETypeSignature(DIE
>    addFlag(Die, dwarf::DW_AT_declaration);
>
>    Die.addValue(dwarf::DW_AT_signature, dwarf::DW_FORM_ref_sig8,
> -               new (DIEValueAllocator) DIETypeSignature(Type));
> +               DIETypeSignature(Type));
>  }
>
>  void DwarfUnit::addDIEEntry(DIE &Die, dwarf::Attribute Attribute,
> -                            DIEEntry *Entry) {
> +                            DIEEntry Entry) {
>    const DIE *DieCU = Die.getUnitOrNull();
> -  const DIE *EntryCU = Entry->getEntry().getUnitOrNull();
> +  const DIE *EntryCU = Entry.getEntry().getUnitOrNull();
>    if (!DieCU)
>      // We assume that Die belongs to this CU, if it is not linked to any CU yet.
>      DieCU = &getUnitDie();
> @@ -471,7 +460,7 @@ void DwarfUnit::addBlockByrefAddress(con
>
>    // Decode the original location, and use that as the start of the byref
>    // variable's location.
> -  DIELoc *Loc = new (DIEValueAllocator) DIELoc();
> +  DIELoc *Loc = new (DIEValueAllocator) DIELoc;
>
>    bool validReg;
>    if (Location.isReg())
> @@ -588,7 +577,7 @@ static uint64_t getBaseTypeSize(DwarfDeb
>
>  void DwarfUnit::addConstantFPValue(DIE &Die, const MachineOperand &MO) {
>    assert(MO.isFPImm() && "Invalid machine operand!");
> -  DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
> +  DIEBlock *Block = new (DIEValueAllocator) DIEBlock;
>    APFloat FPImm = MO.getFPImm()->getValueAPF();
>
>    // Get the raw data form of the floating point.
> @@ -644,7 +633,7 @@ void DwarfUnit::addConstantValue(DIE &Di
>      return;
>    }
>
> -  DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
> +  DIEBlock *Block = new (DIEValueAllocator) DIEBlock;
>
>    // Get the raw data form of the large APInt.
>    const uint64_t *Ptr64 = Val.getRawData();
> @@ -777,22 +766,7 @@ void DwarfUnit::updateAcceleratorTables(
>  void DwarfUnit::addType(DIE &Entity, const DIType *Ty,
>                          dwarf::Attribute Attribute) {
>    assert(Ty && "Trying to add a type that doesn't exist?");
> -
> -  // Check for pre-existence.
> -  DIEEntry *Entry = getDIEEntry(Ty);
> -  // If it exists then use the existing value.
> -  if (Entry) {
> -    addDIEEntry(Entity, Attribute, Entry);
> -    return;
> -  }
> -
> -  // Construct type.
> -  DIE *Buffer = getOrCreateTypeDIE(Ty);
> -
> -  // Set up proxy.
> -  Entry = createDIEEntry(*Buffer);
> -  insertDIEEntry(Ty, Entry);
> -  addDIEEntry(Entity, Attribute, Entry);
> +  addDIEEntry(Entity, Attribute, DIEEntry(*getOrCreateTypeDIE(Ty)));
>  }
>
>  std::string DwarfUnit::getParentContextString(const DIScope *Context) const {
> @@ -969,12 +943,6 @@ void DwarfUnit::constructTypeDIE(DIE &Bu
>          if (unsigned PropertyAttributes = Property->getAttributes())
>            addUInt(ElemDie, dwarf::DW_AT_APPLE_property_attribute, None,
>                    PropertyAttributes);
> -
> -        DIEEntry *Entry = getDIEEntry(Element);
> -        if (!Entry) {
> -          Entry = createDIEEntry(ElemDie);
> -          insertDIEEntry(Element, Entry);
> -        }
>        }
>      }
>
> @@ -1061,7 +1029,7 @@ void DwarfUnit::constructTemplateValuePa
>      else if (GlobalValue *GV = mdconst::dyn_extract<GlobalValue>(Val)) {
>        // For declaration non-type template parameters (such as global values and
>        // functions)
> -      DIELoc *Loc = new (DIEValueAllocator) DIELoc();
> +      DIELoc *Loc = new (DIEValueAllocator) DIELoc;
>        addOpAddress(*Loc, Asm->getSymbol(GV));
>        // Emit DW_OP_stack_value to use the address as the immediate value of the
>        // parameter, rather than a pointer to it.
> @@ -1354,7 +1322,7 @@ void DwarfUnit::constructMemberDIE(DIE &
>      // expression to extract appropriate offset from vtable.
>      // BaseAddr = ObAddr + *((*ObAddr) - Offset)
>
> -    DIELoc *VBaseLocationDie = new (DIEValueAllocator) DIELoc();
> +    DIELoc *VBaseLocationDie = new (DIEValueAllocator) DIELoc;
>      addUInt(*VBaseLocationDie, dwarf::DW_FORM_data1, dwarf::DW_OP_dup);
>      addUInt(*VBaseLocationDie, dwarf::DW_FORM_data1, dwarf::DW_OP_deref);
>      addUInt(*VBaseLocationDie, dwarf::DW_FORM_data1, dwarf::DW_OP_constu);
> @@ -1393,7 +1361,7 @@ void DwarfUnit::constructMemberDIE(DIE &
>        OffsetInBytes = DT->getOffsetInBits() >> 3;
>
>      if (DD->getDwarfVersion() <= 2) {
> -      DIELoc *MemLocationDie = new (DIEValueAllocator) DIELoc();
> +      DIELoc *MemLocationDie = new (DIEValueAllocator) DIELoc;
>        addUInt(*MemLocationDie, dwarf::DW_FORM_data1, dwarf::DW_OP_plus_uconst);
>        addUInt(*MemLocationDie, dwarf::DW_FORM_udata, OffsetInBytes);
>        addBlock(MemberDie, dwarf::DW_AT_data_member_location, MemLocationDie);
> @@ -1417,10 +1385,10 @@ void DwarfUnit::constructMemberDIE(DIE &
>              dwarf::DW_VIRTUALITY_virtual);
>
>    // Objective-C properties.
> -  if (MDNode *PNode = DT->getObjCProperty())
> -    if (DIEEntry *PropertyDie = getDIEEntry(PNode))
> +  if (DINode *PNode = DT->getObjCProperty())
> +    if (DIE *PDie = getDIE(PNode))
>        MemberDie.addValue(dwarf::DW_AT_APPLE_property, dwarf::DW_FORM_ref4,
> -                         PropertyDie);
> +                         DIEEntry(*PDie));
>
>    if (DT->isArtificial())
>      addFlag(MemberDie, dwarf::DW_AT_artificial);
>
> Modified: llvm/trunk/lib/CodeGen/AsmPrinter/DwarfUnit.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/AsmPrinter/DwarfUnit.h?rev=238362&r1=238361&r2=238362&view=diff
> ==============================================================================
> --- llvm/trunk/lib/CodeGen/AsmPrinter/DwarfUnit.h (original)
> +++ llvm/trunk/lib/CodeGen/AsmPrinter/DwarfUnit.h Wed May 27 17:14:58 2015
> @@ -93,10 +93,6 @@ protected:
>    /// information entries.
>    DenseMap<const MDNode *, DIE *> MDNodeToDieMap;
>
> -  /// Tracks the mapping of unit level debug information descriptors to debug
> -  /// information entries using a DIEEntry proxy.
> -  DenseMap<const MDNode *, DIEEntry *> MDNodeToDIEEntryMap;
> -
>    /// A list of all the DIEBlocks in use.
>    std::vector<DIEBlock *> DIEBlocks;
>
> @@ -111,9 +107,6 @@ protected:
>    // All DIEValues are allocated through this allocator.
>    BumpPtrAllocator DIEValueAllocator;
>
> -  // A preallocated DIEValue because 1 is used frequently.
> -  DIEInteger *DIEIntegerOne;
> -
>    /// The section this unit will be emitted in.
>    MCSection *Section;
>
> @@ -180,7 +173,7 @@ public:
>    DIE *getDIE(const DINode *D) const;
>
>    /// \brief Returns a fresh newly allocated DIELoc.
> -  DIELoc *getDIELoc() { return new (DIEValueAllocator) DIELoc(); }
> +  DIELoc *getDIELoc() { return new (DIEValueAllocator) DIELoc; }
>
>    /// \brief Insert DIE into the map.
>    ///
> @@ -233,7 +226,7 @@ public:
>    void addDIEEntry(DIE &Die, dwarf::Attribute Attribute, DIE &Entry);
>
>    /// \brief Add a DIE attribute data and value.
> -  void addDIEEntry(DIE &Die, dwarf::Attribute Attribute, DIEEntry *Entry);
> +  void addDIEEntry(DIE &Die, dwarf::Attribute Attribute, DIEEntry Entry);
>
>    void addDIETypeSignature(DIE &Die, const DwarfTypeUnit &Type);
>
> @@ -369,26 +362,12 @@ private:
>    /// If the DWARF version doesn't handle the language, return -1.
>    int64_t getDefaultLowerBound() const;
>
> -  /// \brief Returns the DIE entry for the specified debug variable.
> -  DIEEntry *getDIEEntry(const MDNode *N) const {
> -    return MDNodeToDIEEntryMap.lookup(N);
> -  }
> -
> -  /// \brief Insert debug information entry into the map.
> -  void insertDIEEntry(const MDNode *N, DIEEntry *E) {
> -    MDNodeToDIEEntryMap.insert(std::make_pair(N, E));
> -  }
> -
>    /// \brief Get an anonymous type for index type.
>    DIE *getIndexTyDie();
>
>    /// \brief Set D as anonymous type for index which can be reused later.
>    void setIndexTyDie(DIE *D) { IndexTyDie = D; }
>
> -  /// \brief Creates a new DIEEntry to be a proxy for a debug information
> -  /// entry.
> -  DIEEntry *createDIEEntry(DIE &Entry);
> -
>    /// If this is a named finished type then include it in the list of types for
>    /// the accelerator tables.
>    void updateAcceleratorTables(const DIScope *Context, const DIType *Ty,
>
> Modified: llvm/trunk/tools/dsymutil/DwarfLinker.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/dsymutil/DwarfLinker.cpp?rev=238362&r1=238361&r2=238362&view=diff
> ==============================================================================
> --- llvm/trunk/tools/dsymutil/DwarfLinker.cpp (original)
> +++ llvm/trunk/tools/dsymutil/DwarfLinker.cpp Wed May 27 17:14:58 2015
> @@ -60,6 +60,30 @@ using HalfOpenIntervalMap =
>
>  typedef HalfOpenIntervalMap<uint64_t, int64_t> FunctionIntervals;
>
> +// FIXME: Delete this structure once DIE::Values has a stable iterator we can
> +// use instead.
> +struct PatchLocation {
> +  DIE *Die;
> +  unsigned Index;
> +
> +  PatchLocation() : Die(nullptr), Index(0) {}
> +  PatchLocation(DIE &Die, unsigned Index) : Die(&Die), Index(Index) {}
> +
> +  void set(uint64_t New) const {
> +    assert(Die);
> +    assert(Index < Die->getValues().size());
> +    assert(Die->getValues()[Index].getType() == DIEValue::isInteger);
> +    Die->setValue(Index, DIEInteger(New));
> +  }
> +
> +  uint64_t get() const {
> +    assert(Die);
> +    assert(Index < Die->getValues().size());
> +    assert(Die->getValues()[Index].getType() == DIEValue::isInteger);
> +    return Die->getValues()[Index].getDIEInteger().getValue();
> +  }
> +};
> +
>  /// \brief Stores all information relating to a compile unit, be it in
>  /// its original instance in the object file to its brand new cloned
>  /// and linked DIE tree.
> @@ -76,7 +100,7 @@ public:
>
>    CompileUnit(DWARFUnit &OrigUnit, unsigned ID)
>        : OrigUnit(OrigUnit), ID(ID), LowPc(UINT64_MAX), HighPc(0), RangeAlloc(),
> -        Ranges(RangeAlloc), UnitRangeAttribute(nullptr) {
> +        Ranges(RangeAlloc) {
>      Info.resize(OrigUnit.getNumDIEs());
>    }
>
> @@ -106,13 +130,15 @@ public:
>    uint64_t getLowPc() const { return LowPc; }
>    uint64_t getHighPc() const { return HighPc; }
>
> -  DIEInteger *getUnitRangesAttribute() const { return UnitRangeAttribute; }
> +  Optional<PatchLocation> getUnitRangesAttribute() const {
> +    return UnitRangeAttribute;
> +  }
>    const FunctionIntervals &getFunctionRanges() const { return Ranges; }
> -  const std::vector<DIEInteger *> &getRangesAttributes() const {
> +  const std::vector<PatchLocation> &getRangesAttributes() const {
>      return RangeAttributes;
>    }
>
> -  const std::vector<std::pair<DIEInteger *, int64_t>> &
> +  const std::vector<std::pair<PatchLocation, int64_t>> &
>    getLocationAttributes() const {
>      return LocationAttributes;
>    }
> @@ -127,7 +153,7 @@ public:
>    /// RefUnit by \p Attr. The attribute should be fixed up later to
>    /// point to the absolute offset of \p Die in the debug_info section.
>    void noteForwardReference(DIE *Die, const CompileUnit *RefUnit,
> -                            DIEInteger *Attr);
> +                            PatchLocation Attr);
>
>    /// \brief Apply all fixups recored by noteForwardReference().
>    void fixupForwardReferences();
> @@ -138,11 +164,11 @@ public:
>
>    /// \brief Keep track of a DW_AT_range attribute that we will need to
>    /// patch up later.
> -  void noteRangeAttribute(const DIE &Die, DIEInteger *Attr);
> +  void noteRangeAttribute(const DIE &Die, PatchLocation Attr);
>
>    /// \brief Keep track of a location attribute pointing to a location
>    /// list in the debug_loc section.
> -  void noteLocationAttribute(DIEInteger *Attr, int64_t PcOffset);
> +  void noteLocationAttribute(PatchLocation Attr, int64_t PcOffset);
>
>    /// \brief Add a name accelerator entry for \p Die with \p Name
>    /// which is stored in the string table at \p Offset.
> @@ -186,7 +212,7 @@ private:
>    /// The offsets for the attributes in this array couldn't be set while
>    /// cloning because for cross-cu forward refences the target DIE's
>    /// offset isn't known you emit the reference attribute.
> -  std::vector<std::tuple<DIE *, const CompileUnit *, DIEInteger *>>
> +  std::vector<std::tuple<DIE *, const CompileUnit *, PatchLocation>>
>        ForwardDIEReferences;
>
>    FunctionIntervals::Allocator RangeAlloc;
> @@ -198,15 +224,15 @@ private:
>    /// \brief DW_AT_ranges attributes to patch after we have gathered
>    /// all the unit's function addresses.
>    /// @{
> -  std::vector<DIEInteger *> RangeAttributes;
> -  DIEInteger *UnitRangeAttribute;
> +  std::vector<PatchLocation> RangeAttributes;
> +  Optional<PatchLocation> UnitRangeAttribute;
>    /// @}
>
>    /// \brief Location attributes that need to be transfered from th
>    /// original debug_loc section to the liked one. They are stored
>    /// along with the PC offset that is to be applied to their
>    /// function's address.
> -  std::vector<std::pair<DIEInteger *, int64_t>> LocationAttributes;
> +  std::vector<std::pair<PatchLocation, int64_t>> LocationAttributes;
>
>    /// \brief Accelerator entries for the unit, both for the pub*
>    /// sections and the apple* ones.
> @@ -229,7 +255,7 @@ uint64_t CompileUnit::computeNextUnitOff
>  /// \brief Keep track of a forward cross-cu reference from this unit
>  /// to \p Die that lives in \p RefUnit.
>  void CompileUnit::noteForwardReference(DIE *Die, const CompileUnit *RefUnit,
> -                                       DIEInteger *Attr) {
> +                                       PatchLocation Attr) {
>    ForwardDIEReferences.emplace_back(Die, RefUnit, Attr);
>  }
>
> @@ -238,9 +264,9 @@ void CompileUnit::fixupForwardReferences
>    for (const auto &Ref : ForwardDIEReferences) {
>      DIE *RefDie;
>      const CompileUnit *RefUnit;
> -    DIEInteger *Attr;
> +    PatchLocation Attr;
>      std::tie(RefDie, RefUnit, Attr) = Ref;
> -    Attr->setValue(RefDie->getOffset() + RefUnit->getStartOffset());
> +    Attr.set(RefDie->getOffset() + RefUnit->getStartOffset());
>    }
>  }
>
> @@ -251,14 +277,14 @@ void CompileUnit::addFunctionRange(uint6
>    this->HighPc = std::max(HighPc, FuncHighPc + PcOffset);
>  }
>
> -void CompileUnit::noteRangeAttribute(const DIE &Die, DIEInteger *Attr) {
> +void CompileUnit::noteRangeAttribute(const DIE &Die, PatchLocation Attr) {
>    if (Die.getTag() != dwarf::DW_TAG_compile_unit)
>      RangeAttributes.push_back(Attr);
>    else
>      UnitRangeAttribute = Attr;
>  }
>
> -void CompileUnit::noteLocationAttribute(DIEInteger *Attr, int64_t PcOffset) {
> +void CompileUnit::noteLocationAttribute(PatchLocation Attr, int64_t PcOffset) {
>    LocationAttributes.emplace_back(Attr, PcOffset);
>  }
>
> @@ -717,8 +743,7 @@ void DwarfStreamer::emitUnitRangesEntrie
>  /// point to the new entries.
>  void DwarfStreamer::emitLocationsForUnit(const CompileUnit &Unit,
>                                           DWARFContext &Dwarf) {
> -  const std::vector<std::pair<DIEInteger *, int64_t>> &Attributes =
> -      Unit.getLocationAttributes();
> +  const auto &Attributes = Unit.getLocationAttributes();
>
>    if (Attributes.empty())
>      return;
> @@ -737,8 +762,8 @@ void DwarfStreamer::emitLocationsForUnit
>      UnitPcOffset = int64_t(OrigLowPc) - Unit.getLowPc();
>
>    for (const auto &Attr : Attributes) {
> -    uint32_t Offset = Attr.first->getValue();
> -    Attr.first->setValue(LocSectionSize);
> +    uint32_t Offset = Attr.first.get();
> +    Attr.first.set(LocSectionSize);
>      // This is the quantity to add to the old location address to get
>      // the correct address for the new one.
>      int64_t LocPcOffset = Attr.second + UnitPcOffset;
> @@ -1760,7 +1785,7 @@ unsigned DwarfLinker::cloneStringAttribu
>    const char *String = *Val.getAsCString(&U);
>    unsigned Offset = StringPool.getStringOffset(String);
>    Die.addValue(dwarf::Attribute(AttrSpec.Attr), dwarf::DW_FORM_strp,
> -               new (DIEAlloc) DIEInteger(Offset));
> +               DIEInteger(Offset));
>    return 4;
>  }
>
> @@ -1803,24 +1828,25 @@ unsigned DwarfLinker::cloneDieReferenceA
>      // to find the unit offset. (We don't have a DwarfDebug)
>      // FIXME: we should be able to design DIEEntry reliance on
>      // DwarfDebug away.
> -    DIEInteger *Attr;
> +    uint64_t Attr;
>      if (Ref < InputDIE.getOffset()) {
>        // We must have already cloned that DIE.
>        uint32_t NewRefOffset =
>            RefUnit->getStartOffset() + NewRefDie->getOffset();
> -      Attr = new (DIEAlloc) DIEInteger(NewRefOffset);
> +      Attr = NewRefOffset;
>      } else {
>        // A forward reference. Note and fixup later.
> -      Attr = new (DIEAlloc) DIEInteger(0xBADDEF);
> -      Unit.noteForwardReference(NewRefDie, RefUnit, Attr);
> +      Attr = 0xBADDEF;
> +      Unit.noteForwardReference(NewRefDie, RefUnit,
> +                                PatchLocation(Die, Die.getValues().size()));
>      }
>      Die.addValue(dwarf::Attribute(AttrSpec.Attr), dwarf::DW_FORM_ref_addr,
> -                 Attr);
> +                 DIEInteger(Attr));
>      return AttrSize;
>    }
>
>    Die.addValue(dwarf::Attribute(AttrSpec.Attr), dwarf::Form(AttrSpec.Form),
> -               new (DIEAlloc) DIEEntry(*NewRefDie));
> +               DIEEntry(*NewRefDie));
>    return AttrSize;
>  }
>
> @@ -1831,23 +1857,23 @@ unsigned DwarfLinker::cloneBlockAttribut
>                                            const DWARFFormValue &Val,
>                                            unsigned AttrSize) {
>    DIE *Attr;
> -  DIEValue *Value;
> +  DIEValue Value;
>    DIELoc *Loc = nullptr;
>    DIEBlock *Block = nullptr;
>    // Just copy the block data over.
>    if (AttrSpec.Form == dwarf::DW_FORM_exprloc) {
> -    Loc = new (DIEAlloc) DIELoc();
> +    Loc = new (DIEAlloc) DIELoc;
>      DIELocs.push_back(Loc);
>    } else {
> -    Block = new (DIEAlloc) DIEBlock();
> +    Block = new (DIEAlloc) DIEBlock;
>      DIEBlocks.push_back(Block);
>    }
>    Attr = Loc ? static_cast<DIE *>(Loc) : static_cast<DIE *>(Block);
> -  Value = Loc ? static_cast<DIEValue *>(Loc) : static_cast<DIEValue *>(Block);
> +  Value = Loc ? DIEValue(Loc) : DIEValue(Block);
>    ArrayRef<uint8_t> Bytes = *Val.getAsBlock();
>    for (auto Byte : Bytes)
>      Attr->addValue(static_cast<dwarf::Attribute>(0), dwarf::DW_FORM_data1,
> -                   new (DIEAlloc) DIEInteger(Byte));
> +                   DIEInteger(Byte));
>    // FIXME: If DIEBlock and DIELoc just reuses the Size field of
>    // the DIE class, this if could be replaced by
>    // Attr->setSize(Bytes.size()).
> @@ -1893,8 +1919,7 @@ unsigned DwarfLinker::cloneAddressAttrib
>    }
>
>    Die.addValue(static_cast<dwarf::Attribute>(AttrSpec.Attr),
> -               static_cast<dwarf::Form>(AttrSpec.Form),
> -               new (DIEAlloc) DIEInteger(Addr));
> +               static_cast<dwarf::Form>(AttrSpec.Form), DIEInteger(Addr));
>    return Unit.getOrigUnit().getAddressByteSize();
>  }
>
> @@ -1922,15 +1947,16 @@ unsigned DwarfLinker::cloneScalarAttribu
>                    &Unit.getOrigUnit(), &InputDIE);
>      return 0;
>    }
> -  DIEInteger *Attr = new (DIEAlloc) DIEInteger(Value);
> +  DIEInteger Attr(Value);
>    if (AttrSpec.Attr == dwarf::DW_AT_ranges)
> -    Unit.noteRangeAttribute(Die, Attr);
> +    Unit.noteRangeAttribute(Die, PatchLocation(Die, Die.getValues().size()));
>    // A more generic way to check for location attributes would be
>    // nice, but it's very unlikely that any other attribute needs a
>    // location list.
>    else if (AttrSpec.Attr == dwarf::DW_AT_location ||
>             AttrSpec.Attr == dwarf::DW_AT_frame_base)
> -    Unit.noteLocationAttribute(Attr, Info.PCOffset);
> +    Unit.noteLocationAttribute(PatchLocation(Die, Die.getValues().size()),
> +                               Info.PCOffset);
>    else if (AttrSpec.Attr == dwarf::DW_AT_declaration && Value)
>      Info.IsDeclaration = true;
>
> @@ -2213,8 +2239,8 @@ void DwarfLinker::patchRangesForUnit(con
>      UnitPcOffset = int64_t(OrigLowPc) - Unit.getLowPc();
>
>    for (const auto &RangeAttribute : Unit.getRangesAttributes()) {
> -    uint32_t Offset = RangeAttribute->getValue();
> -    RangeAttribute->setValue(Streamer->getRangesSectionSize());
> +    uint32_t Offset = RangeAttribute.get();
> +    RangeAttribute.set(Streamer->getRangesSectionSize());
>      RangeList.extract(RangeExtractor, &Offset);
>      const auto &Entries = RangeList.getEntries();
>      const DWARFDebugRangeList::RangeListEntry &First = Entries.front();
> @@ -2241,10 +2267,10 @@ void DwarfLinker::patchRangesForUnit(con
>  /// but for the sake of initial bit-for-bit compatibility with legacy
>  /// dsymutil, we have to do it in a delayed pass.
>  void DwarfLinker::generateUnitRanges(CompileUnit &Unit) const {
> -  DIEInteger *Attr = Unit.getUnitRangesAttribute();
> +  auto Attr = Unit.getUnitRangesAttribute();
>    if (Attr)
> -    Attr->setValue(Streamer->getRangesSectionSize());
> -  Streamer->emitUnitRangesEntries(Unit, Attr != nullptr);
> +    Attr->set(Streamer->getRangesSectionSize());
> +  Streamer->emitUnitRangesEntries(Unit, static_cast<bool>(Attr));
>  }
>
>  /// \brief Insert the new line info sequence \p Seq into the current
> @@ -2301,9 +2327,8 @@ void DwarfLinker::patchLineTableForUnit(
>            return AbbrevData.getAttribute() == dwarf::DW_AT_stmt_list;
>          });
>      assert(Stmt < Abbrev.end() && "Didn't find DW_AT_stmt_list in cloned DIE!");
> -    DIEInteger *StmtAttr =
> -        cast<DIEInteger>(OutputDIE->getValues()[Stmt - Abbrev.begin()]);
> -    StmtAttr->setValue(Streamer->getLineSectionSize());
> +    OutputDIE->setValue(Stmt - Abbrev.begin(),
> +                        DIEInteger(Streamer->getLineSectionSize()));
>    }
>
>    // Parse the original line info for the unit.
>
> Modified: llvm/trunk/unittests/CodeGen/DIEHashTest.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/unittests/CodeGen/DIEHashTest.cpp?rev=238362&r1=238361&r2=238362&view=diff
> ==============================================================================
> --- llvm/trunk/unittests/CodeGen/DIEHashTest.cpp (original)
> +++ llvm/trunk/unittests/CodeGen/DIEHashTest.cpp Wed May 27 17:14:58 2015
> @@ -36,7 +36,7 @@ TEST_F(DIEHashTest, Data1) {
>    DIEHash Hash;
>    DIE Die(dwarf::DW_TAG_base_type);
>    DIEInteger Size(4);
> -  Die.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Size);
> +  Die.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Size);
>    uint64_t MD5Res = Hash.computeTypeSignature(Die);
>    ASSERT_EQ(0x1AFE116E83701108ULL, MD5Res);
>  }
> @@ -45,11 +45,11 @@ TEST_F(DIEHashTest, Data1) {
>  TEST_F(DIEHashTest, TrivialType) {
>    DIE Unnamed(dwarf::DW_TAG_structure_type);
>    DIEInteger One(1);
> -  Unnamed.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &One);
> +  Unnamed.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, One);
>
>    // Line and file number are ignored.
> -  Unnamed.addValue(dwarf::DW_AT_decl_file, dwarf::DW_FORM_data1, &One);
> -  Unnamed.addValue(dwarf::DW_AT_decl_line, dwarf::DW_FORM_data1, &One);
> +  Unnamed.addValue(dwarf::DW_AT_decl_file, dwarf::DW_FORM_data1, One);
> +  Unnamed.addValue(dwarf::DW_AT_decl_line, dwarf::DW_FORM_data1, One);
>    uint64_t MD5Res = DIEHash().computeTypeSignature(Unnamed);
>
>    // The exact same hash GCC produces for this DIE.
> @@ -61,8 +61,8 @@ TEST_F(DIEHashTest, NamedType) {
>    DIE Foo(dwarf::DW_TAG_structure_type);
>    DIEInteger One(1);
>    DIEString FooStr = getString("foo");
> -  Foo.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FooStr);
> -  Foo.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &One);
> +  Foo.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, FooStr);
> +  Foo.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, One);
>
>    uint64_t MD5Res = DIEHash().computeTypeSignature(Foo);
>
> @@ -77,15 +77,15 @@ TEST_F(DIEHashTest, NamespacedType) {
>    auto Space = make_unique<DIE>(dwarf::DW_TAG_namespace);
>    DIEInteger One(1);
>    DIEString SpaceStr = getString("space");
> -  Space->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &SpaceStr);
> +  Space->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, SpaceStr);
>    // DW_AT_declaration is ignored.
> -  Space->addValue(dwarf::DW_AT_declaration, dwarf::DW_FORM_flag_present, &One);
> +  Space->addValue(dwarf::DW_AT_declaration, dwarf::DW_FORM_flag_present, One);
>    // sibling?
>
>    auto Foo = make_unique<DIE>(dwarf::DW_TAG_structure_type);
>    DIEString FooStr = getString("foo");
> -  Foo->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FooStr);
> -  Foo->addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &One);
> +  Foo->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, FooStr);
> +  Foo->addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, One);
>
>    DIE &N = *Foo;
>    Space->addChild(std::move(Foo));
> @@ -101,24 +101,24 @@ TEST_F(DIEHashTest, NamespacedType) {
>  TEST_F(DIEHashTest, TypeWithMember) {
>    DIE Unnamed(dwarf::DW_TAG_structure_type);
>    DIEInteger Four(4);
> -  Unnamed.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Four);
> +  Unnamed.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Four);
>
>    DIE Int(dwarf::DW_TAG_base_type);
>    DIEString IntStr = getString("int");
> -  Int.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &IntStr);
> -  Int.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Four);
> +  Int.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, IntStr);
> +  Int.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Four);
>    DIEInteger Five(5);
> -  Int.addValue(dwarf::DW_AT_encoding, dwarf::DW_FORM_data1, &Five);
> +  Int.addValue(dwarf::DW_AT_encoding, dwarf::DW_FORM_data1, Five);
>
>    DIEEntry IntRef(Int);
>
>    auto Member = make_unique<DIE>(dwarf::DW_TAG_member);
>    DIEString MemberStr = getString("member");
> -  Member->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &MemberStr);
> +  Member->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, MemberStr);
>    DIEInteger Zero(0);
>    Member->addValue(dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1,
> -                   &Zero);
> -  Member->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &IntRef);
> +                   Zero);
> +  Member->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, IntRef);
>
>    Unnamed.addChild(std::move(Member));
>
> @@ -131,34 +131,34 @@ TEST_F(DIEHashTest, TypeWithMember) {
>  TEST_F(DIEHashTest, ReusedType) {
>    DIE Unnamed(dwarf::DW_TAG_structure_type);
>    DIEInteger Eight(8);
> -  Unnamed.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Eight);
> +  Unnamed.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Eight);
>
>    DIEInteger Four(4);
>    DIE Int(dwarf::DW_TAG_base_type);
>    DIEString IntStr = getString("int");
> -  Int.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &IntStr);
> -  Int.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Four);
> +  Int.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, IntStr);
> +  Int.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Four);
>    DIEInteger Five(5);
> -  Int.addValue(dwarf::DW_AT_encoding, dwarf::DW_FORM_data1, &Five);
> +  Int.addValue(dwarf::DW_AT_encoding, dwarf::DW_FORM_data1, Five);
>
>    DIEEntry IntRef(Int);
>
>    auto Mem1 = make_unique<DIE>(dwarf::DW_TAG_member);
>    DIEString Mem1Str = getString("mem1");
> -  Mem1->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &Mem1Str);
> +  Mem1->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, Mem1Str);
>    DIEInteger Zero(0);
>    Mem1->addValue(dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1,
> -                 &Zero);
> -  Mem1->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &IntRef);
> +                 Zero);
> +  Mem1->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, IntRef);
>
>    Unnamed.addChild(std::move(Mem1));
>
>    auto Mem2 = make_unique<DIE>(dwarf::DW_TAG_member);
>    DIEString Mem2Str = getString("mem2");
> -  Mem2->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &Mem2Str);
> +  Mem2->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, Mem2Str);
>    Mem2->addValue(dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1,
> -                 &Four);
> -  Mem2->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &IntRef);
> +                 Four);
> +  Mem2->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, IntRef);
>
>    Unnamed.addChild(std::move(Mem2));
>
> @@ -171,15 +171,15 @@ TEST_F(DIEHashTest, ReusedType) {
>  TEST_F(DIEHashTest, RecursiveType) {
>    DIE Foo(dwarf::DW_TAG_structure_type);
>    DIEInteger One(1);
> -  Foo.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &One);
> +  Foo.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, One);
>    DIEString FooStr = getString("foo");
> -  Foo.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FooStr);
> +  Foo.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, FooStr);
>
>    auto Mem = make_unique<DIE>(dwarf::DW_TAG_member);
>    DIEString MemStr = getString("mem");
> -  Mem->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &MemStr);
> +  Mem->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, MemStr);
>    DIEEntry FooRef(Foo);
> -  Mem->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &FooRef);
> +  Mem->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, FooRef);
>    // DW_AT_external and DW_AT_declaration are ignored anyway, so skip them.
>
>    Foo.addChild(std::move(Mem));
> @@ -193,23 +193,23 @@ TEST_F(DIEHashTest, RecursiveType) {
>  TEST_F(DIEHashTest, Pointer) {
>    DIE Foo(dwarf::DW_TAG_structure_type);
>    DIEInteger Eight(8);
> -  Foo.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Eight);
> +  Foo.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Eight);
>    DIEString FooStr = getString("foo");
> -  Foo.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FooStr);
> +  Foo.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, FooStr);
>
>    auto Mem = make_unique<DIE>(dwarf::DW_TAG_member);
>    DIEString MemStr = getString("mem");
> -  Mem->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &MemStr);
> +  Mem->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, MemStr);
>    DIEInteger Zero(0);
> -  Mem->addValue(dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1, &Zero);
> +  Mem->addValue(dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1, Zero);
>
>    DIE FooPtr(dwarf::DW_TAG_pointer_type);
> -  FooPtr.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Eight);
> +  FooPtr.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Eight);
>    DIEEntry FooRef(Foo);
> -  FooPtr.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &FooRef);
> +  FooPtr.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, FooRef);
>
>    DIEEntry FooPtrRef(FooPtr);
> -  Mem->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &FooPtrRef);
> +  Mem->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, FooPtrRef);
>
>    Foo.addChild(std::move(Mem));
>
> @@ -222,27 +222,27 @@ TEST_F(DIEHashTest, Pointer) {
>  TEST_F(DIEHashTest, Reference) {
>    DIE Foo(dwarf::DW_TAG_structure_type);
>    DIEInteger Eight(8);
> -  Foo.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Eight);
> +  Foo.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Eight);
>    DIEString FooStr = getString("foo");
> -  Foo.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FooStr);
> +  Foo.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, FooStr);
>
>    auto Mem = make_unique<DIE>(dwarf::DW_TAG_member);
>    DIEString MemStr = getString("mem");
> -  Mem->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &MemStr);
> +  Mem->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, MemStr);
>    DIEInteger Zero(0);
> -  Mem->addValue(dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1, &Zero);
> +  Mem->addValue(dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1, Zero);
>
>    DIE FooRef(dwarf::DW_TAG_reference_type);
> -  FooRef.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Eight);
> +  FooRef.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Eight);
>    DIEEntry FooEntry(Foo);
> -  FooRef.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &FooEntry);
> +  FooRef.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, FooEntry);
>
>    DIE FooRefConst(dwarf::DW_TAG_const_type);
>    DIEEntry FooRefRef(FooRef);
> -  FooRefConst.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &FooRefRef);
> +  FooRefConst.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, FooRefRef);
>
>    DIEEntry FooRefConstRef(FooRefConst);
> -  Mem->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &FooRefConstRef);
> +  Mem->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, FooRefConstRef);
>
>    Foo.addChild(std::move(Mem));
>
> @@ -255,27 +255,27 @@ TEST_F(DIEHashTest, Reference) {
>  TEST_F(DIEHashTest, RValueReference) {
>    DIE Foo(dwarf::DW_TAG_structure_type);
>    DIEInteger Eight(8);
> -  Foo.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Eight);
> +  Foo.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Eight);
>    DIEString FooStr = getString("foo");
> -  Foo.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FooStr);
> +  Foo.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, FooStr);
>
>    auto Mem = make_unique<DIE>(dwarf::DW_TAG_member);
>    DIEString MemStr = getString("mem");
> -  Mem->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &MemStr);
> +  Mem->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, MemStr);
>    DIEInteger Zero(0);
> -  Mem->addValue(dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1, &Zero);
> +  Mem->addValue(dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1, Zero);
>
>    DIE FooRef(dwarf::DW_TAG_rvalue_reference_type);
> -  FooRef.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Eight);
> +  FooRef.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Eight);
>    DIEEntry FooEntry(Foo);
> -  FooRef.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &FooEntry);
> +  FooRef.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, FooEntry);
>
>    DIE FooRefConst(dwarf::DW_TAG_const_type);
>    DIEEntry FooRefRef(FooRef);
> -  FooRefConst.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &FooRefRef);
> +  FooRefConst.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, FooRefRef);
>
>    DIEEntry FooRefConstRef(FooRefConst);
> -  Mem->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &FooRefConstRef);
> +  Mem->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, FooRefConstRef);
>
>    Foo.addChild(std::move(Mem));
>
> @@ -288,24 +288,24 @@ TEST_F(DIEHashTest, RValueReference) {
>  TEST_F(DIEHashTest, PtrToMember) {
>    DIE Foo(dwarf::DW_TAG_structure_type);
>    DIEInteger Eight(8);
> -  Foo.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Eight);
> +  Foo.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Eight);
>    DIEString FooStr = getString("foo");
> -  Foo.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FooStr);
> +  Foo.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, FooStr);
>
>    auto Mem = make_unique<DIE>(dwarf::DW_TAG_member);
>    DIEString MemStr = getString("mem");
> -  Mem->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &MemStr);
> +  Mem->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, MemStr);
>    DIEInteger Zero(0);
> -  Mem->addValue(dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1, &Zero);
> +  Mem->addValue(dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1, Zero);
>
>    DIE PtrToFooMem(dwarf::DW_TAG_ptr_to_member_type);
>    DIEEntry FooEntry(Foo);
> -  PtrToFooMem.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &FooEntry);
> +  PtrToFooMem.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, FooEntry);
>    PtrToFooMem.addValue(dwarf::DW_AT_containing_type, dwarf::DW_FORM_ref4,
> -                       &FooEntry);
> +                       FooEntry);
>
>    DIEEntry PtrToFooMemRef(PtrToFooMem);
> -  Mem->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &PtrToFooMemRef);
> +  Mem->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, PtrToFooMemRef);
>
>    Foo.addChild(std::move(Mem));
>
> @@ -329,27 +329,27 @@ TEST_F(DIEHashTest, PtrToMemberDeclDefMa
>    uint64_t MD5ResDecl;
>    {
>      DIE Bar(dwarf::DW_TAG_structure_type);
> -    Bar.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &BarStr);
> -    Bar.addValue(dwarf::DW_AT_declaration, dwarf::DW_FORM_flag_present, &One);
> +    Bar.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, BarStr);
> +    Bar.addValue(dwarf::DW_AT_declaration, dwarf::DW_FORM_flag_present, One);
>
>      DIE Foo(dwarf::DW_TAG_structure_type);
> -    Foo.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Eight);
> -    Foo.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FooStr);
> +    Foo.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Eight);
> +    Foo.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, FooStr);
>
>      auto Mem = make_unique<DIE>(dwarf::DW_TAG_member);
> -    Mem->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &MemStr);
> +    Mem->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, MemStr);
>      Mem->addValue(dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1,
> -                  &Zero);
> +                  Zero);
>
>      DIE PtrToFooMem(dwarf::DW_TAG_ptr_to_member_type);
>      DIEEntry BarEntry(Bar);
> -    PtrToFooMem.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &BarEntry);
> +    PtrToFooMem.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, BarEntry);
>      DIEEntry FooEntry(Foo);
>      PtrToFooMem.addValue(dwarf::DW_AT_containing_type, dwarf::DW_FORM_ref4,
> -                         &FooEntry);
> +                         FooEntry);
>
>      DIEEntry PtrToFooMemRef(PtrToFooMem);
> -    Mem->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &PtrToFooMemRef);
> +    Mem->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, PtrToFooMemRef);
>
>      Foo.addChild(std::move(Mem));
>
> @@ -358,27 +358,27 @@ TEST_F(DIEHashTest, PtrToMemberDeclDefMa
>    uint64_t MD5ResDef;
>    {
>      DIE Bar(dwarf::DW_TAG_structure_type);
> -    Bar.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &BarStr);
> -    Bar.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &One);
> +    Bar.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, BarStr);
> +    Bar.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, One);
>
>      DIE Foo(dwarf::DW_TAG_structure_type);
> -    Foo.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Eight);
> -    Foo.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FooStr);
> +    Foo.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Eight);
> +    Foo.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, FooStr);
>
>      auto Mem = make_unique<DIE>(dwarf::DW_TAG_member);
> -    Mem->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &MemStr);
> +    Mem->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, MemStr);
>      Mem->addValue(dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1,
> -                  &Zero);
> +                  Zero);
>
>      DIE PtrToFooMem(dwarf::DW_TAG_ptr_to_member_type);
>      DIEEntry BarEntry(Bar);
> -    PtrToFooMem.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &BarEntry);
> +    PtrToFooMem.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, BarEntry);
>      DIEEntry FooEntry(Foo);
>      PtrToFooMem.addValue(dwarf::DW_AT_containing_type, dwarf::DW_FORM_ref4,
> -                         &FooEntry);
> +                         FooEntry);
>
>      DIEEntry PtrToFooMemRef(PtrToFooMem);
> -    Mem->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &PtrToFooMemRef);
> +    Mem->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, PtrToFooMemRef);
>
>      Foo.addChild(std::move(Mem));
>
> @@ -402,26 +402,26 @@ TEST_F(DIEHashTest, PtrToMemberDeclDefMi
>    uint64_t MD5ResDecl;
>    {
>      DIE Bar(dwarf::DW_TAG_structure_type);
> -    Bar.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &BarStr);
> -    Bar.addValue(dwarf::DW_AT_declaration, dwarf::DW_FORM_flag_present, &One);
> +    Bar.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, BarStr);
> +    Bar.addValue(dwarf::DW_AT_declaration, dwarf::DW_FORM_flag_present, One);
>
>      DIE Foo(dwarf::DW_TAG_structure_type);
> -    Foo.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Eight);
> -    Foo.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FooStr);
> +    Foo.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Eight);
> +    Foo.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, FooStr);
>
>      auto Mem = make_unique<DIE>(dwarf::DW_TAG_member);
> -    Mem->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &MemStr);
> +    Mem->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, MemStr);
>      Mem->addValue(dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1,
> -                  &Zero);
> +                  Zero);
>
>      DIE PtrToFooMem(dwarf::DW_TAG_ptr_to_member_type);
>      DIEEntry BarEntry(Bar);
> -    PtrToFooMem.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &BarEntry);
> +    PtrToFooMem.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, BarEntry);
>      PtrToFooMem.addValue(dwarf::DW_AT_containing_type, dwarf::DW_FORM_ref4,
> -                         &BarEntry);
> +                         BarEntry);
>
>      DIEEntry PtrToFooMemRef(PtrToFooMem);
> -    Mem->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &PtrToFooMemRef);
> +    Mem->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, PtrToFooMemRef);
>
>      Foo.addChild(std::move(Mem));
>
> @@ -430,26 +430,26 @@ TEST_F(DIEHashTest, PtrToMemberDeclDefMi
>    uint64_t MD5ResDef;
>    {
>      DIE Bar(dwarf::DW_TAG_structure_type);
> -    Bar.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &BarStr);
> -    Bar.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &One);
> +    Bar.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, BarStr);
> +    Bar.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, One);
>
>      DIE Foo(dwarf::DW_TAG_structure_type);
> -    Foo.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Eight);
> -    Foo.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FooStr);
> +    Foo.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Eight);
> +    Foo.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, FooStr);
>
>      auto Mem = make_unique<DIE>(dwarf::DW_TAG_member);
> -    Mem->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &MemStr);
> +    Mem->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, MemStr);
>      Mem->addValue(dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1,
> -                  &Zero);
> +                  Zero);
>
>      DIE PtrToFooMem(dwarf::DW_TAG_ptr_to_member_type);
>      DIEEntry BarEntry(Bar);
> -    PtrToFooMem.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &BarEntry);
> +    PtrToFooMem.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, BarEntry);
>      PtrToFooMem.addValue(dwarf::DW_AT_containing_type, dwarf::DW_FORM_ref4,
> -                         &BarEntry);
> +                         BarEntry);
>
>      DIEEntry PtrToFooMemRef(PtrToFooMem);
> -    Mem->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &PtrToFooMemRef);
> +    Mem->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, PtrToFooMemRef);
>
>      Foo.addChild(std::move(Mem));
>
> @@ -473,23 +473,23 @@ TEST_F(DIEHashTest, RefUnnamedType) {
>    DIEString MemStr = getString("mem");
>
>    DIE Unnamed(dwarf::DW_TAG_structure_type);
> -  Unnamed.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &One);
> +  Unnamed.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, One);
>
>    DIE Foo(dwarf::DW_TAG_structure_type);
> -  Foo.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Eight);
> -  Foo.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FooStr);
> +  Foo.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Eight);
> +  Foo.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, FooStr);
>
>    auto Mem = make_unique<DIE>(dwarf::DW_TAG_member);
> -  Mem->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &MemStr);
> -  Mem->addValue(dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1, &Zero);
> +  Mem->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, MemStr);
> +  Mem->addValue(dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1, Zero);
>
>    DIE UnnamedPtr(dwarf::DW_TAG_pointer_type);
> -  UnnamedPtr.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Eight);
> +  UnnamedPtr.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Eight);
>    DIEEntry UnnamedRef(Unnamed);
> -  UnnamedPtr.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &UnnamedRef);
> +  UnnamedPtr.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, UnnamedRef);
>
>    DIEEntry UnnamedPtrRef(UnnamedPtr);
> -  Mem->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &UnnamedPtrRef);
> +  Mem->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, UnnamedPtrRef);
>
>    Foo.addChild(std::move(Mem));
>
> @@ -502,12 +502,12 @@ TEST_F(DIEHashTest, RefUnnamedType) {
>  TEST_F(DIEHashTest, NestedType) {
>    DIE Unnamed(dwarf::DW_TAG_structure_type);
>    DIEInteger One(1);
> -  Unnamed.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &One);
> +  Unnamed.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, One);
>
>    auto Foo = make_unique<DIE>(dwarf::DW_TAG_structure_type);
>    DIEString FooStr = getString("foo");
> -  Foo->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FooStr);
> -  Foo->addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &One);
> +  Foo->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, FooStr);
> +  Foo->addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, One);
>
>    Unnamed.addChild(std::move(Foo));
>
> @@ -521,11 +521,11 @@ TEST_F(DIEHashTest, NestedType) {
>  TEST_F(DIEHashTest, MemberFunc) {
>    DIE Unnamed(dwarf::DW_TAG_structure_type);
>    DIEInteger One(1);
> -  Unnamed.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &One);
> +  Unnamed.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, One);
>
>    auto Func = make_unique<DIE>(dwarf::DW_TAG_subprogram);
>    DIEString FuncStr = getString("func");
> -  Func->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FuncStr);
> +  Func->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, FuncStr);
>
>    Unnamed.addChild(std::move(Func));
>
> @@ -542,21 +542,21 @@ TEST_F(DIEHashTest, MemberFuncFlag) {
>    DIE A(dwarf::DW_TAG_structure_type);
>    DIEInteger One(1);
>    DIEString AStr = getString("A");
> -  A.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &AStr);
> -  A.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &One);
> -  A.addValue(dwarf::DW_AT_decl_file, dwarf::DW_FORM_data1, &One);
> -  A.addValue(dwarf::DW_AT_decl_line, dwarf::DW_FORM_data1, &One);
> +  A.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, AStr);
> +  A.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, One);
> +  A.addValue(dwarf::DW_AT_decl_file, dwarf::DW_FORM_data1, One);
> +  A.addValue(dwarf::DW_AT_decl_line, dwarf::DW_FORM_data1, One);
>
>    auto Func = make_unique<DIE>(dwarf::DW_TAG_subprogram);
>    DIEString FuncStr = getString("func");
>    DIEString FuncLinkage = getString("_ZN1A4funcEv");
>    DIEInteger Two(2);
> -  Func->addValue(dwarf::DW_AT_external, dwarf::DW_FORM_flag_present, &One);
> -  Func->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FuncStr);
> -  Func->addValue(dwarf::DW_AT_decl_file, dwarf::DW_FORM_data1, &One);
> -  Func->addValue(dwarf::DW_AT_decl_line, dwarf::DW_FORM_data1, &Two);
> -  Func->addValue(dwarf::DW_AT_linkage_name, dwarf::DW_FORM_strp, &FuncLinkage);
> -  Func->addValue(dwarf::DW_AT_declaration, dwarf::DW_FORM_flag_present, &One);
> +  Func->addValue(dwarf::DW_AT_external, dwarf::DW_FORM_flag_present, One);
> +  Func->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, FuncStr);
> +  Func->addValue(dwarf::DW_AT_decl_file, dwarf::DW_FORM_data1, One);
> +  Func->addValue(dwarf::DW_AT_decl_line, dwarf::DW_FORM_data1, Two);
> +  Func->addValue(dwarf::DW_AT_linkage_name, dwarf::DW_FORM_strp, FuncLinkage);
> +  Func->addValue(dwarf::DW_AT_declaration, dwarf::DW_FORM_flag_present, One);
>
>    A.addChild(std::move(Func));
>
> @@ -575,35 +575,35 @@ TEST_F(DIEHashTest, MemberSdata) {
>    DIE A(dwarf::DW_TAG_structure_type);
>    DIEInteger One(1);
>    DIEString AStr = getString("A");
> -  A.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &AStr);
> -  A.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &One);
> -  A.addValue(dwarf::DW_AT_decl_file, dwarf::DW_FORM_data1, &One);
> -  A.addValue(dwarf::DW_AT_decl_line, dwarf::DW_FORM_data1, &One);
> +  A.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, AStr);
> +  A.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, One);
> +  A.addValue(dwarf::DW_AT_decl_file, dwarf::DW_FORM_data1, One);
> +  A.addValue(dwarf::DW_AT_decl_line, dwarf::DW_FORM_data1, One);
>
>    DIEInteger Four(4);
>    DIEInteger Five(5);
>    DIEString FStr = getString("int");
>    DIE IntTyDIE(dwarf::DW_TAG_base_type);
> -  IntTyDIE.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Four);
> -  IntTyDIE.addValue(dwarf::DW_AT_encoding, dwarf::DW_FORM_data1, &Five);
> -  IntTyDIE.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FStr);
> +  IntTyDIE.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Four);
> +  IntTyDIE.addValue(dwarf::DW_AT_encoding, dwarf::DW_FORM_data1, Five);
> +  IntTyDIE.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, FStr);
>
>    DIEEntry IntTy(IntTyDIE);
>    auto PITyDIE = make_unique<DIE>(dwarf::DW_TAG_const_type);
> -  PITyDIE->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &IntTy);
> +  PITyDIE->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, IntTy);
>
>    DIEEntry PITy(*PITyDIE);
>    auto PI = make_unique<DIE>(dwarf::DW_TAG_member);
>    DIEString PIStr = getString("PI");
>    DIEInteger Two(2);
>    DIEInteger NegThree(-3);
> -  PI->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &PIStr);
> -  PI->addValue(dwarf::DW_AT_decl_file, dwarf::DW_FORM_data1, &One);
> -  PI->addValue(dwarf::DW_AT_decl_line, dwarf::DW_FORM_data1, &Two);
> -  PI->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &PITy);
> -  PI->addValue(dwarf::DW_AT_external, dwarf::DW_FORM_flag_present, &One);
> -  PI->addValue(dwarf::DW_AT_declaration, dwarf::DW_FORM_flag_present, &One);
> -  PI->addValue(dwarf::DW_AT_const_value, dwarf::DW_FORM_sdata, &NegThree);
> +  PI->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, PIStr);
> +  PI->addValue(dwarf::DW_AT_decl_file, dwarf::DW_FORM_data1, One);
> +  PI->addValue(dwarf::DW_AT_decl_line, dwarf::DW_FORM_data1, Two);
> +  PI->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, PITy);
> +  PI->addValue(dwarf::DW_AT_external, dwarf::DW_FORM_flag_present, One);
> +  PI->addValue(dwarf::DW_AT_declaration, dwarf::DW_FORM_flag_present, One);
> +  PI->addValue(dwarf::DW_AT_const_value, dwarf::DW_FORM_sdata, NegThree);
>
>    A.addChild(std::move(PI));
>
> @@ -620,32 +620,32 @@ TEST_F(DIEHashTest, MemberBlock) {
>    DIE A(dwarf::DW_TAG_structure_type);
>    DIEInteger One(1);
>    DIEString AStr = getString("A");
> -  A.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &AStr);
> -  A.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &One);
> -  A.addValue(dwarf::DW_AT_decl_file, dwarf::DW_FORM_data1, &One);
> -  A.addValue(dwarf::DW_AT_decl_line, dwarf::DW_FORM_data1, &One);
> +  A.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, AStr);
> +  A.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, One);
> +  A.addValue(dwarf::DW_AT_decl_file, dwarf::DW_FORM_data1, One);
> +  A.addValue(dwarf::DW_AT_decl_line, dwarf::DW_FORM_data1, One);
>
>    DIEInteger Four(4);
>    DIEString FStr = getString("float");
>    auto FloatTyDIE = make_unique<DIE>(dwarf::DW_TAG_base_type);
> -  FloatTyDIE->addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Four);
> -  FloatTyDIE->addValue(dwarf::DW_AT_encoding, dwarf::DW_FORM_data1, &Four);
> -  FloatTyDIE->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FStr);
> +  FloatTyDIE->addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, Four);
> +  FloatTyDIE->addValue(dwarf::DW_AT_encoding, dwarf::DW_FORM_data1, Four);
> +  FloatTyDIE->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, FStr);
>
>    DIEEntry FloatTy(*FloatTyDIE);
>    auto PITyDIE = make_unique<DIE>(dwarf::DW_TAG_const_type);
> -  PITyDIE->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &FloatTy);
> +  PITyDIE->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, FloatTy);
>
>    DIEEntry PITy(*PITyDIE);
>    auto PI = make_unique<DIE>(dwarf::DW_TAG_member);
>    DIEString PIStr = getString("PI");
>    DIEInteger Two(2);
> -  PI->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &PIStr);
> -  PI->addValue(dwarf::DW_AT_decl_file, dwarf::DW_FORM_data1, &One);
> -  PI->addValue(dwarf::DW_AT_decl_line, dwarf::DW_FORM_data1, &Two);
> -  PI->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &PITy);
> -  PI->addValue(dwarf::DW_AT_external, dwarf::DW_FORM_flag_present, &One);
> -  PI->addValue(dwarf::DW_AT_declaration, dwarf::DW_FORM_flag_present, &One);
> +  PI->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, PIStr);
> +  PI->addValue(dwarf::DW_AT_decl_file, dwarf::DW_FORM_data1, One);
> +  PI->addValue(dwarf::DW_AT_decl_line, dwarf::DW_FORM_data1, Two);
> +  PI->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, PITy);
> +  PI->addValue(dwarf::DW_AT_external, dwarf::DW_FORM_flag_present, One);
> +  PI->addValue(dwarf::DW_AT_declaration, dwarf::DW_FORM_flag_present, One);
>
>    DIEBlock PIBlock;
>    DIEInteger Blk1(0xc3);
> @@ -653,10 +653,10 @@ TEST_F(DIEHashTest, MemberBlock) {
>    DIEInteger Blk3(0x48);
>    DIEInteger Blk4(0x40);
>
> -  PIBlock.addValue((dwarf::Attribute)0, dwarf::DW_FORM_data1, &Blk1);
> -  PIBlock.addValue((dwarf::Attribute)0, dwarf::DW_FORM_data1, &Blk2);
> -  PIBlock.addValue((dwarf::Attribute)0, dwarf::DW_FORM_data1, &Blk3);
> -  PIBlock.addValue((dwarf::Attribute)0, dwarf::DW_FORM_data1, &Blk4);
> +  PIBlock.addValue((dwarf::Attribute)0, dwarf::DW_FORM_data1, Blk1);
> +  PIBlock.addValue((dwarf::Attribute)0, dwarf::DW_FORM_data1, Blk2);
> +  PIBlock.addValue((dwarf::Attribute)0, dwarf::DW_FORM_data1, Blk3);
> +  PIBlock.addValue((dwarf::Attribute)0, dwarf::DW_FORM_data1, Blk4);
>
>    PI->addValue(dwarf::DW_AT_const_value, dwarf::DW_FORM_block1, &PIBlock);
>
>
>
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