src/share/vm/oops/methodData.hpp

rev 5240 : 8023657: New type profiling points: arguments to call
Summary: x86 interpreter and c1 type profiling for arguments at calls
Reviewed-by:

*** 115,125 ****
      receiver_type_data_tag,
      virtual_call_data_tag,
      ret_data_tag,
      branch_data_tag,
      multi_branch_data_tag,
!     arg_info_data_tag
    };
  
    enum {
      // The _struct._flags word is formatted as [trap_state:4 | flags:4].
      // The trap state breaks down further as [recompile:1 | reason:3].
--- 115,127 ----
      receiver_type_data_tag,
      virtual_call_data_tag,
      ret_data_tag,
      branch_data_tag,
      multi_branch_data_tag,
!     arg_info_data_tag,
!     call_type_data_tag,
!     virtual_call_type_data_tag
    };
  
    enum {
      // The _struct._flags word is formatted as [trap_state:4 | flags:4].
      // The trap state breaks down further as [recompile:1 | reason:3].
*** 163,187 ****
    // The associated trap histogram in the MDO itself tells whether
    // traps are common or not.  If a BCI shows that a trap X has
    // occurred, and the MDO shows N occurrences of X, we make the
    // simplifying assumption that all N occurrences can be blamed
    // on that BCI.
!   int trap_state() {
      return ((_header._struct._flags >> trap_shift) & trap_mask);
    }
  
    void set_trap_state(int new_state) {
      assert(ProfileTraps, "used only under +ProfileTraps");
      uint old_flags = (_header._struct._flags & flag_mask);
      _header._struct._flags = (new_state << trap_shift) | old_flags;
    }
  
!   u1 flags() {
      return _header._struct._flags;
    }
  
!   u2 bci() {
      return _header._struct._bci;
    }
  
    void set_header(intptr_t value) {
      _header._bits = value;
--- 165,189 ----
    // The associated trap histogram in the MDO itself tells whether
    // traps are common or not.  If a BCI shows that a trap X has
    // occurred, and the MDO shows N occurrences of X, we make the
    // simplifying assumption that all N occurrences can be blamed
    // on that BCI.
!   int trap_state() const {
      return ((_header._struct._flags >> trap_shift) & trap_mask);
    }
  
    void set_trap_state(int new_state) {
      assert(ProfileTraps, "used only under +ProfileTraps");
      uint old_flags = (_header._struct._flags & flag_mask);
      _header._struct._flags = (new_state << trap_shift) | old_flags;
    }
  
!   u1 flags() const {
      return _header._struct._flags;
    }
  
!   u2 bci() const {
      return _header._struct._bci;
    }
  
    void set_header(intptr_t value) {
      _header._bits = value;
*** 196,214 ****
      _cells[index] = value;
    }
    void release_set_cell_at(int index, intptr_t value) {
      OrderAccess::release_store_ptr(&_cells[index], value);
    }
!   intptr_t cell_at(int index) {
      return _cells[index];
    }
  
    void set_flag_at(int flag_number) {
      assert(flag_number < flag_limit, "oob");
      _header._struct._flags |= (0x1 << flag_number);
    }
!   bool flag_at(int flag_number) {
      assert(flag_number < flag_limit, "oob");
      return (_header._struct._flags & (0x1 << flag_number)) != 0;
    }
  
    // Low-level support for code generation.
--- 198,216 ----
      _cells[index] = value;
    }
    void release_set_cell_at(int index, intptr_t value) {
      OrderAccess::release_store_ptr(&_cells[index], value);
    }
!   intptr_t cell_at(int index) const {
      return _cells[index];
    }
  
    void set_flag_at(int flag_number) {
      assert(flag_number < flag_limit, "oob");
      _header._struct._flags |= (0x1 << flag_number);
    }
!   bool flag_at(int flag_number) const {
      assert(flag_number < flag_limit, "oob");
      return (_header._struct._flags & (0x1 << flag_number)) != 0;
    }
  
    // Low-level support for code generation.
*** 252,274 ****
  class ProfileData;
  class   BitData;
  class     CounterData;
  class       ReceiverTypeData;
  class         VirtualCallData;
  class       RetData;
  class   JumpData;
  class     BranchData;
  class   ArrayData;
  class     MultiBranchData;
  class     ArgInfoData;
  
- 
  // ProfileData
  //
  // A ProfileData object is created to refer to a section of profiling
  // data in a structured way.
  class ProfileData : public ResourceObj {
  private:
  #ifndef PRODUCT
    enum {
      tab_width_one = 16,
      tab_width_two = 36
--- 254,279 ----
  class ProfileData;
  class   BitData;
  class     CounterData;
  class       ReceiverTypeData;
  class         VirtualCallData;
+ class           VirtualCallTypeData;
  class       RetData;
+ class       CallTypeData;
  class   JumpData;
  class     BranchData;
  class   ArrayData;
  class     MultiBranchData;
  class     ArgInfoData;
  
  // ProfileData
  //
  // A ProfileData object is created to refer to a section of profiling
  // data in a structured way.
  class ProfileData : public ResourceObj {
+   friend class TypeEntries;
+   friend class TypeStackSlotEntries;
  private:
  #ifndef PRODUCT
    enum {
      tab_width_one = 16,
      tab_width_two = 36
*** 278,295 ****
    // This is a pointer to a section of profiling data.
    DataLayout* _data;
  
  protected:
    DataLayout* data() { return _data; }
  
    enum {
      cell_size = DataLayout::cell_size
    };
  
  public:
    // How many cells are in this?
!   virtual int cell_count() {
      ShouldNotReachHere();
      return -1;
    }
  
    // Return the size of this data.
--- 283,301 ----
    // This is a pointer to a section of profiling data.
    DataLayout* _data;
  
  protected:
    DataLayout* data() { return _data; }
+   const DataLayout* data() const { return _data; }
  
    enum {
      cell_size = DataLayout::cell_size
    };
  
  public:
    // How many cells are in this?
!   virtual int cell_count() const {
      ShouldNotReachHere();
      return -1;
    }
  
    // Return the size of this data.
*** 305,350 ****
    }
    void release_set_intptr_at(int index, intptr_t value) {
      assert(0 <= index && index < cell_count(), "oob");
      data()->release_set_cell_at(index, value);
    }
!   intptr_t intptr_at(int index) {
      assert(0 <= index && index < cell_count(), "oob");
      return data()->cell_at(index);
    }
    void set_uint_at(int index, uint value) {
      set_intptr_at(index, (intptr_t) value);
    }
    void release_set_uint_at(int index, uint value) {
      release_set_intptr_at(index, (intptr_t) value);
    }
!   uint uint_at(int index) {
      return (uint)intptr_at(index);
    }
    void set_int_at(int index, int value) {
      set_intptr_at(index, (intptr_t) value);
    }
    void release_set_int_at(int index, int value) {
      release_set_intptr_at(index, (intptr_t) value);
    }
!   int int_at(int index) {
      return (int)intptr_at(index);
    }
!   int int_at_unchecked(int index) {
      return (int)data()->cell_at(index);
    }
    void set_oop_at(int index, oop value) {
      set_intptr_at(index, (intptr_t) value);
    }
!   oop oop_at(int index) {
      return (oop)intptr_at(index);
    }
  
    void set_flag_at(int flag_number) {
      data()->set_flag_at(flag_number);
    }
!   bool flag_at(int flag_number) {
      return data()->flag_at(flag_number);
    }
  
    // two convenient imports for use by subclasses:
    static ByteSize cell_offset(int index) {
--- 311,359 ----
    }
    void release_set_intptr_at(int index, intptr_t value) {
      assert(0 <= index && index < cell_count(), "oob");
      data()->release_set_cell_at(index, value);
    }
!   intptr_t intptr_at(int index) const {
      assert(0 <= index && index < cell_count(), "oob");
      return data()->cell_at(index);
    }
    void set_uint_at(int index, uint value) {
      set_intptr_at(index, (intptr_t) value);
    }
    void release_set_uint_at(int index, uint value) {
      release_set_intptr_at(index, (intptr_t) value);
    }
!   uint uint_at(int index) const {
      return (uint)intptr_at(index);
    }
    void set_int_at(int index, int value) {
      set_intptr_at(index, (intptr_t) value);
    }
+   void set_int_at_unchecked(int index, int value) {
+     data()->set_cell_at(index, (intptr_t) value);
+   }
    void release_set_int_at(int index, int value) {
      release_set_intptr_at(index, (intptr_t) value);
    }
!   int int_at(int index) const {
      return (int)intptr_at(index);
    }
!   int int_at_unchecked(int index) const {
      return (int)data()->cell_at(index);
    }
    void set_oop_at(int index, oop value) {
      set_intptr_at(index, (intptr_t) value);
    }
!   oop oop_at(int index) const {
      return (oop)intptr_at(index);
    }
  
    void set_flag_at(int flag_number) {
      data()->set_flag_at(flag_number);
    }
!   bool flag_at(int flag_number) const {
      return data()->flag_at(flag_number);
    }
  
    // two convenient imports for use by subclasses:
    static ByteSize cell_offset(int index) {
*** 360,437 ****
  
  public:
    // Constructor for invalid ProfileData.
    ProfileData();
  
!   u2 bci() {
      return data()->bci();
    }
  
    address dp() {
      return (address)_data;
    }
  
!   int trap_state() {
      return data()->trap_state();
    }
    void set_trap_state(int new_state) {
      data()->set_trap_state(new_state);
    }
  
    // Type checking
!   virtual bool is_BitData()         { return false; }
!   virtual bool is_CounterData()     { return false; }
!   virtual bool is_JumpData()        { return false; }
!   virtual bool is_ReceiverTypeData(){ return false; }
!   virtual bool is_VirtualCallData() { return false; }
!   virtual bool is_RetData()         { return false; }
!   virtual bool is_BranchData()      { return false; }
!   virtual bool is_ArrayData()       { return false; }
!   virtual bool is_MultiBranchData() { return false; }
!   virtual bool is_ArgInfoData()     { return false; }
  
  
!   BitData* as_BitData() {
      assert(is_BitData(), "wrong type");
      return is_BitData()         ? (BitData*)        this : NULL;
    }
!   CounterData* as_CounterData() {
      assert(is_CounterData(), "wrong type");
      return is_CounterData()     ? (CounterData*)    this : NULL;
    }
!   JumpData* as_JumpData() {
      assert(is_JumpData(), "wrong type");
      return is_JumpData()        ? (JumpData*)       this : NULL;
    }
!   ReceiverTypeData* as_ReceiverTypeData() {
      assert(is_ReceiverTypeData(), "wrong type");
      return is_ReceiverTypeData() ? (ReceiverTypeData*)this : NULL;
    }
!   VirtualCallData* as_VirtualCallData() {
      assert(is_VirtualCallData(), "wrong type");
      return is_VirtualCallData() ? (VirtualCallData*)this : NULL;
    }
!   RetData* as_RetData() {
      assert(is_RetData(), "wrong type");
      return is_RetData()         ? (RetData*)        this : NULL;
    }
!   BranchData* as_BranchData() {
      assert(is_BranchData(), "wrong type");
      return is_BranchData()      ? (BranchData*)     this : NULL;
    }
!   ArrayData* as_ArrayData() {
      assert(is_ArrayData(), "wrong type");
      return is_ArrayData()       ? (ArrayData*)      this : NULL;
    }
!   MultiBranchData* as_MultiBranchData() {
      assert(is_MultiBranchData(), "wrong type");
      return is_MultiBranchData() ? (MultiBranchData*)this : NULL;
    }
!   ArgInfoData* as_ArgInfoData() {
      assert(is_ArgInfoData(), "wrong type");
      return is_ArgInfoData() ? (ArgInfoData*)this : NULL;
    }
  
  
    // Subclass specific initialization
    virtual void post_initialize(BytecodeStream* stream, MethodData* mdo) {}
  
--- 369,456 ----
  
  public:
    // Constructor for invalid ProfileData.
    ProfileData();
  
!   u2 bci() const {
      return data()->bci();
    }
  
    address dp() {
      return (address)_data;
    }
  
!   int trap_state() const {
      return data()->trap_state();
    }
    void set_trap_state(int new_state) {
      data()->set_trap_state(new_state);
    }
  
    // Type checking
!   virtual bool is_BitData()         const { return false; }
!   virtual bool is_CounterData()     const { return false; }
!   virtual bool is_JumpData()        const { return false; }
!   virtual bool is_ReceiverTypeData()const { return false; }
!   virtual bool is_VirtualCallData() const { return false; }
!   virtual bool is_RetData()         const { return false; }
!   virtual bool is_BranchData()      const { return false; }
!   virtual bool is_ArrayData()       const { return false; }
!   virtual bool is_MultiBranchData() const { return false; }
!   virtual bool is_ArgInfoData()     const { return false; }
!   virtual bool is_CallTypeData()    const { return false; }
!   virtual bool is_VirtualCallTypeData()const { return false; }
  
  
!   BitData* as_BitData() const {
      assert(is_BitData(), "wrong type");
      return is_BitData()         ? (BitData*)        this : NULL;
    }
!   CounterData* as_CounterData() const {
      assert(is_CounterData(), "wrong type");
      return is_CounterData()     ? (CounterData*)    this : NULL;
    }
!   JumpData* as_JumpData() const {
      assert(is_JumpData(), "wrong type");
      return is_JumpData()        ? (JumpData*)       this : NULL;
    }
!   ReceiverTypeData* as_ReceiverTypeData() const {
      assert(is_ReceiverTypeData(), "wrong type");
      return is_ReceiverTypeData() ? (ReceiverTypeData*)this : NULL;
    }
!   VirtualCallData* as_VirtualCallData() const {
      assert(is_VirtualCallData(), "wrong type");
      return is_VirtualCallData() ? (VirtualCallData*)this : NULL;
    }
!   RetData* as_RetData() const {
      assert(is_RetData(), "wrong type");
      return is_RetData()         ? (RetData*)        this : NULL;
    }
!   BranchData* as_BranchData() const {
      assert(is_BranchData(), "wrong type");
      return is_BranchData()      ? (BranchData*)     this : NULL;
    }
!   ArrayData* as_ArrayData() const {
      assert(is_ArrayData(), "wrong type");
      return is_ArrayData()       ? (ArrayData*)      this : NULL;
    }
!   MultiBranchData* as_MultiBranchData() const {
      assert(is_MultiBranchData(), "wrong type");
      return is_MultiBranchData() ? (MultiBranchData*)this : NULL;
    }
!   ArgInfoData* as_ArgInfoData() const {
      assert(is_ArgInfoData(), "wrong type");
      return is_ArgInfoData() ? (ArgInfoData*)this : NULL;
    }
+   CallTypeData* as_CallTypeData() const {
+     assert(is_CallTypeData(), "wrong type");
+     return is_CallTypeData() ? (CallTypeData*)this : NULL;
+   }
+   VirtualCallTypeData* as_VirtualCallTypeData() const {
+     assert(is_VirtualCallTypeData(), "wrong type");
+     return is_VirtualCallTypeData() ? (VirtualCallTypeData*)this : NULL;
+   }
  
  
    // Subclass specific initialization
    virtual void post_initialize(BytecodeStream* stream, MethodData* mdo) {}
  
*** 441,459 ****
    // CI translation: ProfileData can represent both MethodDataOop data
    // as well as CIMethodData data. This function is provided for translating
    // an oop in a ProfileData to the ci equivalent. Generally speaking,
    // most ProfileData don't require any translation, so we provide the null
    // translation here, and the required translators are in the ci subclasses.
!   virtual void translate_from(ProfileData* data) {}
  
!   virtual void print_data_on(outputStream* st) {
      ShouldNotReachHere();
    }
  
  #ifndef PRODUCT
!   void print_shared(outputStream* st, const char* name);
!   void tab(outputStream* st);
  #endif
  };
  
  // BitData
  //
--- 460,478 ----
    // CI translation: ProfileData can represent both MethodDataOop data
    // as well as CIMethodData data. This function is provided for translating
    // an oop in a ProfileData to the ci equivalent. Generally speaking,
    // most ProfileData don't require any translation, so we provide the null
    // translation here, and the required translators are in the ci subclasses.
!   virtual void translate_from(const ProfileData* data) {}
  
!   virtual void print_data_on(outputStream* st) const {
      ShouldNotReachHere();
    }
  
  #ifndef PRODUCT
!   void print_shared(outputStream* st, const char* name) const;
!   void tab(outputStream* st, bool first = false) const;
  #endif
  };
  
  // BitData
  //
*** 468,484 ****
    enum { bit_cell_count = 0 };  // no additional data fields needed.
  public:
    BitData(DataLayout* layout) : ProfileData(layout) {
    }
  
!   virtual bool is_BitData() { return true; }
  
    static int static_cell_count() {
      return bit_cell_count;
    }
  
!   virtual int cell_count() {
      return static_cell_count();
    }
  
    // Accessor
  
--- 487,503 ----
    enum { bit_cell_count = 0 };  // no additional data fields needed.
  public:
    BitData(DataLayout* layout) : ProfileData(layout) {
    }
  
!   virtual bool is_BitData() const { return true; }
  
    static int static_cell_count() {
      return bit_cell_count;
    }
  
!   virtual int cell_count() const {
      return static_cell_count();
    }
  
    // Accessor
  
*** 496,506 ****
    static ByteSize bit_data_size() {
      return cell_offset(bit_cell_count);
    }
  
  #ifndef PRODUCT
!   void print_data_on(outputStream* st);
  #endif
  };
  
  // CounterData
  //
--- 515,525 ----
    static ByteSize bit_data_size() {
      return cell_offset(bit_cell_count);
    }
  
  #ifndef PRODUCT
!   void print_data_on(outputStream* st) const;
  #endif
  };
  
  // CounterData
  //
*** 512,533 ****
      counter_cell_count
    };
  public:
    CounterData(DataLayout* layout) : BitData(layout) {}
  
!   virtual bool is_CounterData() { return true; }
  
    static int static_cell_count() {
      return counter_cell_count;
    }
  
!   virtual int cell_count() {
      return static_cell_count();
    }
  
    // Direct accessor
!   uint count() {
      return uint_at(count_off);
    }
  
    // Code generation support
    static ByteSize count_offset() {
--- 531,552 ----
      counter_cell_count
    };
  public:
    CounterData(DataLayout* layout) : BitData(layout) {}
  
!   virtual bool is_CounterData() const { return true; }
  
    static int static_cell_count() {
      return counter_cell_count;
    }
  
!   virtual int cell_count() const {
      return static_cell_count();
    }
  
    // Direct accessor
!   uint count() const {
      return uint_at(count_off);
    }
  
    // Code generation support
    static ByteSize count_offset() {
*** 540,550 ****
    void set_count(uint count) {
      set_uint_at(count_off, count);
    }
  
  #ifndef PRODUCT
!   void print_data_on(outputStream* st);
  #endif
  };
  
  // JumpData
  //
--- 559,569 ----
    void set_count(uint count) {
      set_uint_at(count_off, count);
    }
  
  #ifndef PRODUCT
!   void print_data_on(outputStream* st) const;
  #endif
  };
  
  // JumpData
  //
*** 568,589 ****
    JumpData(DataLayout* layout) : ProfileData(layout) {
      assert(layout->tag() == DataLayout::jump_data_tag ||
        layout->tag() == DataLayout::branch_data_tag, "wrong type");
    }
  
!   virtual bool is_JumpData() { return true; }
  
    static int static_cell_count() {
      return jump_cell_count;
    }
  
!   virtual int cell_count() {
      return static_cell_count();
    }
  
    // Direct accessor
!   uint taken() {
      return uint_at(taken_off_set);
    }
  
    void set_taken(uint cnt) {
      set_uint_at(taken_off_set, cnt);
--- 587,608 ----
    JumpData(DataLayout* layout) : ProfileData(layout) {
      assert(layout->tag() == DataLayout::jump_data_tag ||
        layout->tag() == DataLayout::branch_data_tag, "wrong type");
    }
  
!   virtual bool is_JumpData() const { return true; }
  
    static int static_cell_count() {
      return jump_cell_count;
    }
  
!   virtual int cell_count() const {
      return static_cell_count();
    }
  
    // Direct accessor
!   uint taken() const {
      return uint_at(taken_off_set);
    }
  
    void set_taken(uint cnt) {
      set_uint_at(taken_off_set, cnt);
*** 596,606 ****
      if (cnt == 0) cnt--;
      set_uint_at(taken_off_set, cnt);
      return cnt;
    }
  
!   int displacement() {
      return int_at(displacement_off_set);
    }
  
    // Code generation support
    static ByteSize taken_offset() {
--- 615,625 ----
      if (cnt == 0) cnt--;
      set_uint_at(taken_off_set, cnt);
      return cnt;
    }
  
!   int displacement() const {
      return int_at(displacement_off_set);
    }
  
    // Code generation support
    static ByteSize taken_offset() {
*** 613,623 ****
  
    // Specific initialization.
    void post_initialize(BytecodeStream* stream, MethodData* mdo);
  
  #ifndef PRODUCT
!   void print_data_on(outputStream* st);
  #endif
  };
  
  // ReceiverTypeData
  //
--- 632,956 ----
  
    // Specific initialization.
    void post_initialize(BytecodeStream* stream, MethodData* mdo);
  
  #ifndef PRODUCT
!   void print_data_on(outputStream* st) const;
! #endif
! };
! 
! // Entries in a ProfileData object to record types: it can either be
! // none (no profile), unknown (conflicting profile data) or a klass if
! // a single one is seen. Whether a null reference was seen is also
! // recorded. No counter is associated with the type and a single type
! // is tracked (unlike VirtualCallData).
! class TypeEntries {
! 
! public:
! 
!   // A single cell is used to record information for a type:
!   // - the cell is initialized to 0
!   // - when a type is discovered it is stored in the cell
!   // - bit zero of the cell is used to record whether a null reference
!   // was encountered or not
!   // - bit 1 is set to record a conflict in the type information
! 
!   enum {
!     null_seen = 1,
!     type_mask = ~null_seen,
!     type_unknown = 2,
!     status_bits = null_seen | type_unknown,
!     type_klass_mask = ~status_bits
!   };
! 
!   // what to initialize a cell to
!   static intptr_t type_none() {
!     return NULL;
!   }
! 
!   // null seen = bit 0 set?
!   static bool was_null_seen(intptr_t v) {
!     return v & null_seen;
!   }
! 
!   // conflicting type information = bit 1 set?
!   static bool is_type_unknown(intptr_t v) {
!     return v & type_unknown;
!   }
! 
!   // not type information yet = all bits cleared, ignoring bit 0?
!   static bool is_type_none(intptr_t v) {
!     return (v & type_mask) == 0;
!   }
! 
!   // recorded type: cell without bit 0 and 1
!   static intptr_t klass_part(intptr_t v) {
!     intptr_t r = v & type_klass_mask;
!     assert (r != NULL, "invalid");
!     return r;
!   }
! 
!   // type recorded
!   static Klass* valid_klass(intptr_t k) {
!     if (!is_type_none(k) &&
!         !is_type_unknown(k)) {
!       return (Klass*)klass_part(k);
!     } else {
!       return NULL;
!     }
!   }
! 
!   static intptr_t with_status(intptr_t k, intptr_t in) {
!     return k | (in & status_bits);
!   }
! 
! #ifndef PRODUCT
!   static void print_klass(outputStream* st, intptr_t k);
! #endif
! 
!   // GC support
!   static bool is_loader_alive(BoolObjectClosure* is_alive_cl, intptr_t p);
! 
! protected:
!   // ProfileData object these entries are part of
!   ProfileData* _pd;
!   // offset within the ProfileData object where the entries start
!   const int _base_off;
! 
!   TypeEntries(int base_off, ProfileData* pd)
!     : _base_off(base_off), _pd(pd) {}
! 
!   void set_intptr_at(int index, intptr_t value) {
!     _pd->set_intptr_at(index, value);
!   }
! 
!   intptr_t intptr_at(int index) const {
!     return _pd->intptr_at(index);
!   }
! };
! 
! // Type entries used for arguments passed at a call and parameters on
! // method entry. 2 cells per entry: one for the type encoded as in
! // TypeEntries and one initialized with the stack slot where the
! // profiled object is to be found so that the interpreter can locate
! // it quickly.
! class TypeStackSlotEntries : public TypeEntries {
! 
! private:
!   enum {
!     stack_slot_entry,
!     type_entry,
!     per_arg_cell_count
!   };
! 
!   // Start with a header if needed. It stores the number of cells used
!   // for this call type information. Unless we collect only profiling
!   // for a single argument the number of cells is unknown statically.
!   static int header_cell_count() {
!     return (TypeProfileArgsLimit > 1) ? 1 : 0;
!   }
! 
!   static int cell_count_local_offset() {
!      assert(arguments_profiling_enabled() && TypeProfileArgsLimit > 1, "no cell count");
!      return 0;
!    }
! 
!   int cell_count_global_offset() const {
!     return _base_off + cell_count_local_offset();
!   }
!   
!   // offset of cell for stack slot for entry i within ProfileData object
!   int stack_slot_global_offset(int i) const {
!     return _base_off + stack_slot_local_offset(i);
!   }
! 
!   void check_number_of_arguments(uint total) {
!     assert(number_of_arguments() == total, "should be set in DataLayout::initialize");
!   }
! 
!   // number of cells not counting the header
!   int cell_count_no_header() const {
!     return _pd->uint_at(cell_count_global_offset());
!   }
! 
!   static bool arguments_profiling_enabled();
!   static void assert_arguments_profiling_enabled() {
!     assert(arguments_profiling_enabled(), "args profiling should be on");
!   }
! 
! protected:
! 
!   // offset of cell for type for entry i within ProfileData object
!   int type_global_offset(int i) const {
!     return _base_off + type_local_offset(i);
!   }
! 
! public:
! 
!   TypeStackSlotEntries(int base_off, ProfileData* pd)
!     : TypeEntries(base_off, pd) {}
! 
!   static int compute_cell_count(BytecodeStream* stream);
! 
!   static void initialize(DataLayout* dl, int base, int cell_count) {
!     if (TypeProfileArgsLimit > 1) {
!       int off = base + cell_count_local_offset();
!       dl->set_cell_at(off, cell_count - base - header_cell_count());
!     }
!   }
! 
!   void post_initialize(BytecodeStream* stream);
! 
!   uint number_of_arguments() const {
!     assert_arguments_profiling_enabled();
!     if (TypeProfileArgsLimit > 1) {
!       int cell_count = cell_count_no_header();
!       int nb = cell_count / TypeStackSlotEntries::per_arg_count();
!       assert(nb > 0 && nb <= TypeProfileArgsLimit , "only when we profile args");
!       return nb;
!     } else {
!       assert(TypeProfileArgsLimit == 1, "at least one arg");
!       return 1;
!     }
!   }
!   
!   int cell_count() const {
!     assert_arguments_profiling_enabled();
!     if (TypeProfileArgsLimit > 1) {
!       return _base_off + header_cell_count() + _pd->int_at_unchecked(cell_count_global_offset());
!     } else {
!       return _base_off + TypeStackSlotEntries::per_arg_count();
!     }
!   }
! 
!   // offset of cell for stack slot for entry i within this block of cells for a TypeStackSlotEntries
!   static int stack_slot_local_offset(int i) {
!     assert_arguments_profiling_enabled();
!     return header_cell_count() + i * per_arg_cell_count + stack_slot_entry;
!   }
! 
!   // offset of cell for type for entry i within this block of cells for a TypeStackSlotEntries
!   static int type_local_offset(int i) {
!     return header_cell_count() + i * per_arg_cell_count + type_entry;
!   }
! 
!   // stack slot for entry i
!   uint stack_slot(int i) const {
!     assert(i >= 0 && i < number_of_arguments(), "oob");
!     return _pd->uint_at(stack_slot_global_offset(i));
!   }
! 
!   // set stack slot for entry i
!   void set_stack_slot(int i, uint num) {
!     assert(i >= 0 && i < number_of_arguments(), "oob");
!     _pd->set_uint_at(stack_slot_global_offset(i), num);
!   }
!   
!   // type for entry i
!   intptr_t type(int i) const {
!     assert(i >= 0 && i < number_of_arguments(), "oob");
!     return _pd->intptr_at(type_global_offset(i));
!   }
! 
!   // set type for entry i
!   void set_type(int i, intptr_t k) {
!     assert(i >= 0 && i < number_of_arguments(), "oob");
!     _pd->set_intptr_at(type_global_offset(i), k);
!   }
! 
!   static ByteSize per_arg_size() {
!     return in_ByteSize(per_arg_cell_count * DataLayout::cell_size);
!   }
! 
!   static int per_arg_count() {
!     return per_arg_cell_count ;
!   }
! 
!   // Code generation support
!    static ByteSize cell_count_offset() {
!      return in_ByteSize(cell_count_local_offset() * DataLayout::cell_size);
!    }
!  
!    static ByteSize args_data_offset() {
!      return in_ByteSize(header_cell_count() * DataLayout::cell_size);
!    }
!  
!    static ByteSize stack_slot_offset(int i) {
!      return in_ByteSize(stack_slot_local_offset(i) * DataLayout::cell_size);
!    }
!  
!    static ByteSize type_offset(int i) {
!      return in_ByteSize(type_local_offset(i) * DataLayout::cell_size);
!    }
! 
!   // GC support
!   void clean_weak_klass_links(BoolObjectClosure* is_alive_closure);
! 
! #ifndef PRODUCT
!   void print_data_on(outputStream* st) const;
! #endif
! };
! 
! // CallTypeData
! //
! // A CallTypeData is used to access profiling information about a non
! // virtual call for which we collect type information about arguments.
! class CallTypeData : public CounterData {
! private:
!   TypeStackSlotEntries _args;
! 
! public:
!   CallTypeData(DataLayout* layout) :
!     CounterData(layout), _args(CounterData::static_cell_count(), this)  {
!     assert(layout->tag() == DataLayout::call_type_data_tag, "wrong type");
!   }
! 
!   const TypeStackSlotEntries* args() const { return &_args; }
! 
!   virtual bool is_CallTypeData() const { return true; }
! 
!   static int static_cell_count() {
!     return -1;
!   }
! 
!   static int compute_cell_count(BytecodeStream* stream) {
!     return CounterData::static_cell_count() + TypeStackSlotEntries::compute_cell_count(stream);
!   }
!   
!   static void initialize(DataLayout* dl, int cell_count) {
!     TypeStackSlotEntries::initialize(dl, CounterData::static_cell_count(), cell_count);
!   }
! 
!   virtual void post_initialize(BytecodeStream* stream, MethodData* mdo) {
!     _args.post_initialize(stream);
!   }
! 
!   virtual int cell_count() const {
!     return _args.cell_count();
!   }
! 
!   uint number_of_arguments() const {
!     return args()->number_of_arguments();
!   }
! 
!   void set_argument_type(int i, Klass* k) {
!     intptr_t current = _args.type(i);
!     return _args.set_type(i, TypeEntries::with_status((intptr_t)k, current));
!   }
! 
!   // Code generation support
!   static ByteSize args_data_offset() {
!     return cell_offset(CounterData::static_cell_count()) + TypeStackSlotEntries::args_data_offset();
!   }
! 
!   // GC support
!   virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure) {
!     _args.clean_weak_klass_links(is_alive_closure);
!   }
! 
! #ifndef PRODUCT
!   virtual void print_data_on(outputStream* st) const;
  #endif
  };
  
  // ReceiverTypeData
  //
*** 634,653 ****
    };
  
  public:
    ReceiverTypeData(DataLayout* layout) : CounterData(layout) {
      assert(layout->tag() == DataLayout::receiver_type_data_tag ||
!            layout->tag() == DataLayout::virtual_call_data_tag, "wrong type");
    }
  
!   virtual bool is_ReceiverTypeData() { return true; }
  
    static int static_cell_count() {
      return counter_cell_count + (uint) TypeProfileWidth * receiver_type_row_cell_count;
    }
  
!   virtual int cell_count() {
      return static_cell_count();
    }
  
    // Direct accessors
    static uint row_limit() {
--- 967,987 ----
    };
  
  public:
    ReceiverTypeData(DataLayout* layout) : CounterData(layout) {
      assert(layout->tag() == DataLayout::receiver_type_data_tag ||
!            layout->tag() == DataLayout::virtual_call_data_tag ||
!            layout->tag() == DataLayout::virtual_call_type_data_tag, "wrong type");
    }
  
!   virtual bool is_ReceiverTypeData() const { return true; }
  
    static int static_cell_count() {
      return counter_cell_count + (uint) TypeProfileWidth * receiver_type_row_cell_count;
    }
  
!   virtual int cell_count() const {
      return static_cell_count();
    }
  
    // Direct accessors
    static uint row_limit() {
*** 658,668 ****
    }
    static int receiver_count_cell_index(uint row) {
      return count0_offset + row * receiver_type_row_cell_count;
    }
  
!   Klass* receiver(uint row) {
      assert(row < row_limit(), "oob");
  
      Klass* recv = (Klass*)intptr_at(receiver_cell_index(row));
      assert(recv == NULL || recv->is_klass(), "wrong type");
      return recv;
--- 992,1002 ----
    }
    static int receiver_count_cell_index(uint row) {
      return count0_offset + row * receiver_type_row_cell_count;
    }
  
!   Klass* receiver(uint row) const {
      assert(row < row_limit(), "oob");
  
      Klass* recv = (Klass*)intptr_at(receiver_cell_index(row));
      assert(recv == NULL || recv->is_klass(), "wrong type");
      return recv;
*** 671,681 ****
    void set_receiver(uint row, Klass* k) {
      assert((uint)row < row_limit(), "oob");
      set_intptr_at(receiver_cell_index(row), (uintptr_t)k);
    }
  
!   uint receiver_count(uint row) {
      assert(row < row_limit(), "oob");
      return uint_at(receiver_count_cell_index(row));
    }
  
    void set_receiver_count(uint row, uint count) {
--- 1005,1015 ----
    void set_receiver(uint row, Klass* k) {
      assert((uint)row < row_limit(), "oob");
      set_intptr_at(receiver_cell_index(row), (uintptr_t)k);
    }
  
!   uint receiver_count(uint row) const {
      assert(row < row_limit(), "oob");
      return uint_at(receiver_count_cell_index(row));
    }
  
    void set_receiver_count(uint row, uint count) {
*** 719,762 ****
  
    // GC support
    virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure);
  
  #ifndef PRODUCT
!   void print_receiver_data_on(outputStream* st);
!   void print_data_on(outputStream* st);
  #endif
  };
  
  // VirtualCallData
  //
  // A VirtualCallData is used to access profiling information about a
  // virtual call.  For now, it has nothing more than a ReceiverTypeData.
  class VirtualCallData : public ReceiverTypeData {
  public:
    VirtualCallData(DataLayout* layout) : ReceiverTypeData(layout) {
!     assert(layout->tag() == DataLayout::virtual_call_data_tag, "wrong type");
    }
  
!   virtual bool is_VirtualCallData() { return true; }
  
    static int static_cell_count() {
      // At this point we could add more profile state, e.g., for arguments.
      // But for now it's the same size as the base record type.
      return ReceiverTypeData::static_cell_count();
    }
  
!   virtual int cell_count() {
      return static_cell_count();
    }
  
    // Direct accessors
    static ByteSize virtual_call_data_size() {
      return cell_offset(static_cell_count());
    }
  
  #ifndef PRODUCT
!   void print_data_on(outputStream* st);
  #endif
  };
  
  // RetData
  //
--- 1053,1161 ----
  
    // GC support
    virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure);
  
  #ifndef PRODUCT
!   void print_receiver_data_on(outputStream* st) const;
!   void print_data_on(outputStream* st) const;
  #endif
  };
  
  // VirtualCallData
  //
  // A VirtualCallData is used to access profiling information about a
  // virtual call.  For now, it has nothing more than a ReceiverTypeData.
  class VirtualCallData : public ReceiverTypeData {
  public:
    VirtualCallData(DataLayout* layout) : ReceiverTypeData(layout) {
!     assert(layout->tag() == DataLayout::virtual_call_data_tag ||
!            layout->tag() == DataLayout::virtual_call_type_data_tag, "wrong type");
    }
  
!   virtual bool is_VirtualCallData() const { return true; }
  
    static int static_cell_count() {
      // At this point we could add more profile state, e.g., for arguments.
      // But for now it's the same size as the base record type.
      return ReceiverTypeData::static_cell_count();
    }
  
!   virtual int cell_count() const {
      return static_cell_count();
    }
  
    // Direct accessors
    static ByteSize virtual_call_data_size() {
      return cell_offset(static_cell_count());
    }
  
  #ifndef PRODUCT
!   void print_data_on(outputStream* st) const;
! #endif
! };
! 
! // VirtualCallTypeData
! //
! // A VirtualCallTypeData is used to access profiling information about
! // a virtual call for which we collect type information about
! // arguments.
! class VirtualCallTypeData : public VirtualCallData {
! private:
!   TypeStackSlotEntries _args;
! 
! public:
!   VirtualCallTypeData(DataLayout* layout) :
!     VirtualCallData(layout), _args(VirtualCallData::static_cell_count(), this)  {
!     assert(layout->tag() == DataLayout::virtual_call_type_data_tag, "wrong type");
!   }
! 
!   const TypeStackSlotEntries* args() const { return &_args; }
! 
!   virtual bool is_VirtualCallTypeData() const { return true; }
! 
!   static int static_cell_count() {
!     return -1;
!   }
! 
!   static int compute_cell_count(BytecodeStream* stream) {
!     return VirtualCallData::static_cell_count() + TypeStackSlotEntries::compute_cell_count(stream);
!   }
!   
!   static void initialize(DataLayout* dl, int cell_count) {
!     TypeStackSlotEntries::initialize(dl, VirtualCallData::static_cell_count(), cell_count);
!   }
! 
!   virtual void post_initialize(BytecodeStream* stream, MethodData* mdo) {
!     _args.post_initialize(stream);
!   }
! 
!   virtual int cell_count() const {
!     return _args.cell_count();
!   }
! 
!   uint number_of_arguments() const {
!     return args()->number_of_arguments();
!   }
! 
!   void set_argument_type(int i, Klass* k) {
!     intptr_t current = _args.type(i);
!     return _args.set_type(i, TypeEntries::with_status((intptr_t)k, current));
!   }
! 
!   // Code generation support
!   static ByteSize args_data_offset() {
!     return cell_offset(VirtualCallData::static_cell_count()) + TypeStackSlotEntries::args_data_offset();
!   }
! 
!   // GC support
!   virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure) {
!     ReceiverTypeData::clean_weak_klass_links(is_alive_closure);
!     _args.clean_weak_klass_links(is_alive_closure);
!   }
! 
! #ifndef PRODUCT
!   virtual void print_data_on(outputStream* st) const;
  #endif
  };
  
  // RetData
  //
*** 795,815 ****
  public:
    RetData(DataLayout* layout) : CounterData(layout) {
      assert(layout->tag() == DataLayout::ret_data_tag, "wrong type");
    }
  
!   virtual bool is_RetData() { return true; }
  
    enum {
      no_bci = -1 // value of bci when bci1/2 are not in use.
    };
  
    static int static_cell_count() {
      return counter_cell_count + (uint) BciProfileWidth * ret_row_cell_count;
    }
  
!   virtual int cell_count() {
      return static_cell_count();
    }
  
    static uint row_limit() {
      return BciProfileWidth;
--- 1194,1214 ----
  public:
    RetData(DataLayout* layout) : CounterData(layout) {
      assert(layout->tag() == DataLayout::ret_data_tag, "wrong type");
    }
  
!   virtual bool is_RetData() const { return true; }
  
    enum {
      no_bci = -1 // value of bci when bci1/2 are not in use.
    };
  
    static int static_cell_count() {
      return counter_cell_count + (uint) BciProfileWidth * ret_row_cell_count;
    }
  
!   virtual int cell_count() const {
      return static_cell_count();
    }
  
    static uint row_limit() {
      return BciProfileWidth;
*** 823,839 ****
    static int bci_displacement_cell_index(uint row) {
      return displacement0_offset + row * ret_row_cell_count;
    }
  
    // Direct accessors
!   int bci(uint row) {
      return int_at(bci_cell_index(row));
    }
!   uint bci_count(uint row) {
      return uint_at(bci_count_cell_index(row));
    }
!   int bci_displacement(uint row) {
      return int_at(bci_displacement_cell_index(row));
    }
  
    // Interpreter Runtime support
    address fixup_ret(int return_bci, MethodData* mdo);
--- 1222,1238 ----
    static int bci_displacement_cell_index(uint row) {
      return displacement0_offset + row * ret_row_cell_count;
    }
  
    // Direct accessors
!   int bci(uint row) const {
      return int_at(bci_cell_index(row));
    }
!   uint bci_count(uint row) const {
      return uint_at(bci_count_cell_index(row));
    }
!   int bci_displacement(uint row) const {
      return int_at(bci_displacement_cell_index(row));
    }
  
    // Interpreter Runtime support
    address fixup_ret(int return_bci, MethodData* mdo);
*** 851,861 ****
  
    // Specific initialization.
    void post_initialize(BytecodeStream* stream, MethodData* mdo);
  
  #ifndef PRODUCT
!   void print_data_on(outputStream* st);
  #endif
  };
  
  // BranchData
  //
--- 1250,1260 ----
  
    // Specific initialization.
    void post_initialize(BytecodeStream* stream, MethodData* mdo);
  
  #ifndef PRODUCT
!   void print_data_on(outputStream* st) const;
  #endif
  };
  
  // BranchData
  //
*** 876,897 ****
  public:
    BranchData(DataLayout* layout) : JumpData(layout) {
      assert(layout->tag() == DataLayout::branch_data_tag, "wrong type");
    }
  
!   virtual bool is_BranchData() { return true; }
  
    static int static_cell_count() {
      return branch_cell_count;
    }
  
!   virtual int cell_count() {
      return static_cell_count();
    }
  
    // Direct accessor
!   uint not_taken() {
      return uint_at(not_taken_off_set);
    }
  
    void set_not_taken(uint cnt) {
      set_uint_at(not_taken_off_set, cnt);
--- 1275,1296 ----
  public:
    BranchData(DataLayout* layout) : JumpData(layout) {
      assert(layout->tag() == DataLayout::branch_data_tag, "wrong type");
    }
  
!   virtual bool is_BranchData() const { return true; }
  
    static int static_cell_count() {
      return branch_cell_count;
    }
  
!   virtual int cell_count() const {
      return static_cell_count();
    }
  
    // Direct accessor
!   uint not_taken() const {
      return uint_at(not_taken_off_set);
    }
  
    void set_not_taken(uint cnt) {
      set_uint_at(not_taken_off_set, cnt);
*** 915,925 ****
  
    // Specific initialization.
    void post_initialize(BytecodeStream* stream, MethodData* mdo);
  
  #ifndef PRODUCT
!   void print_data_on(outputStream* st);
  #endif
  };
  
  // ArrayData
  //
--- 1314,1324 ----
  
    // Specific initialization.
    void post_initialize(BytecodeStream* stream, MethodData* mdo);
  
  #ifndef PRODUCT
!   void print_data_on(outputStream* st) const;
  #endif
  };
  
  // ArrayData
  //
*** 933,951 ****
    enum {
      array_len_off_set,
      array_start_off_set
    };
  
!   uint array_uint_at(int index) {
      int aindex = index + array_start_off_set;
      return uint_at(aindex);
    }
!   int array_int_at(int index) {
      int aindex = index + array_start_off_set;
      return int_at(aindex);
    }
!   oop array_oop_at(int index) {
      int aindex = index + array_start_off_set;
      return oop_at(aindex);
    }
    void array_set_int_at(int index, int value) {
      int aindex = index + array_start_off_set;
--- 1332,1350 ----
    enum {
      array_len_off_set,
      array_start_off_set
    };
  
!   uint array_uint_at(int index) const {
      int aindex = index + array_start_off_set;
      return uint_at(aindex);
    }
!   int array_int_at(int index) const {
      int aindex = index + array_start_off_set;
      return int_at(aindex);
    }
!   oop array_oop_at(int index) const {
      int aindex = index + array_start_off_set;
      return oop_at(aindex);
    }
    void array_set_int_at(int index, int value) {
      int aindex = index + array_start_off_set;
*** 958,978 ****
    }
  
  public:
    ArrayData(DataLayout* layout) : ProfileData(layout) {}
  
!   virtual bool is_ArrayData() { return true; }
  
    static int static_cell_count() {
      return -1;
    }
  
!   int array_len() {
      return int_at_unchecked(array_len_off_set);
    }
  
!   virtual int cell_count() {
      return array_len() + 1;
    }
  
    // Code generation support
    static ByteSize array_len_offset() {
--- 1357,1377 ----
    }
  
  public:
    ArrayData(DataLayout* layout) : ProfileData(layout) {}
  
!   virtual bool is_ArrayData() const { return true; }
  
    static int static_cell_count() {
      return -1;
    }
  
!   int array_len() const {
      return int_at_unchecked(array_len_off_set);
    }
  
!   virtual int cell_count() const {
      return array_len() + 1;
    }
  
    // Code generation support
    static ByteSize array_len_offset() {
*** 1015,1047 ****
  public:
    MultiBranchData(DataLayout* layout) : ArrayData(layout) {
      assert(layout->tag() == DataLayout::multi_branch_data_tag, "wrong type");
    }
  
!   virtual bool is_MultiBranchData() { return true; }
  
    static int compute_cell_count(BytecodeStream* stream);
  
!   int number_of_cases() {
      int alen = array_len() - 2; // get rid of default case here.
      assert(alen % per_case_cell_count == 0, "must be even");
      return (alen / per_case_cell_count);
    }
  
!   uint default_count() {
      return array_uint_at(default_count_off_set);
    }
!   int default_displacement() {
      return array_int_at(default_disaplacement_off_set);
    }
  
!   uint count_at(int index) {
      return array_uint_at(case_array_start +
                           index * per_case_cell_count +
                           relative_count_off_set);
    }
!   int displacement_at(int index) {
      return array_int_at(case_array_start +
                          index * per_case_cell_count +
                          relative_displacement_off_set);
    }
  
--- 1414,1446 ----
  public:
    MultiBranchData(DataLayout* layout) : ArrayData(layout) {
      assert(layout->tag() == DataLayout::multi_branch_data_tag, "wrong type");
    }
  
!   virtual bool is_MultiBranchData() const { return true; }
  
    static int compute_cell_count(BytecodeStream* stream);
  
!   int number_of_cases() const {
      int alen = array_len() - 2; // get rid of default case here.
      assert(alen % per_case_cell_count == 0, "must be even");
      return (alen / per_case_cell_count);
    }
  
!   uint default_count() const {
      return array_uint_at(default_count_off_set);
    }
!   int default_displacement() const {
      return array_int_at(default_disaplacement_off_set);
    }
  
!   uint count_at(int index) const {
      return array_uint_at(case_array_start +
                           index * per_case_cell_count +
                           relative_count_off_set);
    }
!   int displacement_at(int index) const {
      return array_int_at(case_array_start +
                          index * per_case_cell_count +
                          relative_displacement_off_set);
    }
  
*** 1072,1109 ****
  
    // Specific initialization.
    void post_initialize(BytecodeStream* stream, MethodData* mdo);
  
  #ifndef PRODUCT
!   void print_data_on(outputStream* st);
  #endif
  };
  
  class ArgInfoData : public ArrayData {
  
  public:
    ArgInfoData(DataLayout* layout) : ArrayData(layout) {
      assert(layout->tag() == DataLayout::arg_info_data_tag, "wrong type");
    }
  
!   virtual bool is_ArgInfoData() { return true; }
  
  
!   int number_of_args() {
      return array_len();
    }
  
!   uint arg_modified(int arg) {
      return array_uint_at(arg);
    }
  
    void set_arg_modified(int arg, uint val) {
      array_set_int_at(arg, val);
    }
  
  #ifndef PRODUCT
!   void print_data_on(outputStream* st);
  #endif
  };
  
  // MethodData*
  //
--- 1471,1508 ----
  
    // Specific initialization.
    void post_initialize(BytecodeStream* stream, MethodData* mdo);
  
  #ifndef PRODUCT
!   void print_data_on(outputStream* st) const;
  #endif
  };
  
  class ArgInfoData : public ArrayData {
  
  public:
    ArgInfoData(DataLayout* layout) : ArrayData(layout) {
      assert(layout->tag() == DataLayout::arg_info_data_tag, "wrong type");
    }
  
!   virtual bool is_ArgInfoData() const { return true; }
  
  
!   int number_of_args() const {
      return array_len();
    }
  
!   uint arg_modified(int arg) const {
      return array_uint_at(arg);
    }
  
    void set_arg_modified(int arg, uint val) {
      array_set_int_at(arg, val);
    }
  
  #ifndef PRODUCT
!   void print_data_on(outputStream* st) const;
  #endif
  };
  
  // MethodData*
  //
*** 1269,1278 ****
--- 1668,1683 ----
    ProfileData* bci_to_extra_data(int bci, bool create_if_missing);
  
    // return the argument info cell
    ArgInfoData *arg_info();
  
+   static bool profile_jsr292(methodHandle m, int bci);
+   static int profile_arguments_flag();
+   static bool profile_arguments_jsr292_only();
+   static bool profile_all_arguments();
+   static bool profile_arguments_for_invoke(methodHandle m, int bci);
+ 
  public:
    static int header_size() {
      return sizeof(MethodData)/wordSize;
    }
  
*** 1508,1515 ****
--- 1913,1922 ----
    const char* internal_name() const { return "{method data}"; }
  
    // verification
    void verify_on(outputStream* st);
    void verify_data_on(outputStream* st);
+ 
+   static bool profile_arguments();
  };
  
  #endif // SHARE_VM_OOPS_METHODDATAOOP_HPP