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src/hotspot/share/opto/type.hpp

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   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef SHARE_OPTO_TYPE_HPP
  26 #define SHARE_OPTO_TYPE_HPP
  27 

  28 #include "opto/adlcVMDeps.hpp"
  29 #include "runtime/handles.hpp"

  30 
  31 // Portions of code courtesy of Clifford Click
  32 
  33 // Optimization - Graph Style
  34 
  35 
  36 // This class defines a Type lattice.  The lattice is used in the constant
  37 // propagation algorithms, and for some type-checking of the iloc code.
  38 // Basic types include RSD's (lower bound, upper bound, stride for integers),
  39 // float & double precision constants, sets of data-labels and code-labels.
  40 // The complete lattice is described below.  Subtypes have no relationship to
  41 // up or down in the lattice; that is entirely determined by the behavior of
  42 // the MEET/JOIN functions.
  43 
  44 class Dict;
  45 class Type;
  46 class   TypeD;
  47 class   TypeF;
  48 class   TypeInteger;
  49 class     TypeInt;

 116     Function,                   // Function signature
 117     Abio,                       // Abstract I/O
 118     Return_Address,             // Subroutine return address
 119     Memory,                     // Abstract store
 120     FloatTop,                   // No float value
 121     FloatCon,                   // Floating point constant
 122     FloatBot,                   // Any float value
 123     DoubleTop,                  // No double value
 124     DoubleCon,                  // Double precision constant
 125     DoubleBot,                  // Any double value
 126     Bottom,                     // Bottom of lattice
 127     lastype                     // Bogus ending type (not in lattice)
 128   };
 129 
 130   // Signal values for offsets from a base pointer
 131   enum OFFSET_SIGNALS {
 132     OffsetTop = -2000000000,    // undefined offset
 133     OffsetBot = -2000000001     // any possible offset
 134   };
 135 
























 136   // Min and max WIDEN values.
 137   enum WIDEN {
 138     WidenMin = 0,
 139     WidenMax = 3
 140   };
 141 
 142 private:
 143   typedef struct {
 144     TYPES                dual_type;
 145     BasicType            basic_type;
 146     const char*          msg;
 147     bool                 isa_oop;
 148     uint                 ideal_reg;
 149     relocInfo::relocType reloc;
 150   } TypeInfo;
 151 
 152   // Dictionary of types shared among compilations.
 153   static Dict* _shared_type_dict;
 154   static const TypeInfo _type_info[];
 155 

 303   const TypeNarrowKlass *isa_narrowklass() const;// Returns NULL if not oop ptr type
 304   const TypeOopPtr   *isa_oopptr() const;        // Returns NULL if not oop ptr type
 305   const TypeOopPtr   *is_oopptr() const;         // Java-style GC'd pointer
 306   const TypeInstPtr  *isa_instptr() const;       // Returns NULL if not InstPtr
 307   const TypeInstPtr  *is_instptr() const;        // Instance
 308   const TypeAryPtr   *isa_aryptr() const;        // Returns NULL if not AryPtr
 309   const TypeAryPtr   *is_aryptr() const;         // Array oop
 310 
 311   const TypeMetadataPtr   *isa_metadataptr() const;   // Returns NULL if not oop ptr type
 312   const TypeMetadataPtr   *is_metadataptr() const;    // Java-style GC'd pointer
 313   const TypeKlassPtr      *isa_klassptr() const;      // Returns NULL if not KlassPtr
 314   const TypeKlassPtr      *is_klassptr() const;       // assert if not KlassPtr
 315   const TypeInstKlassPtr  *isa_instklassptr() const;  // Returns NULL if not IntKlassPtr
 316   const TypeInstKlassPtr  *is_instklassptr() const;   // assert if not IntKlassPtr
 317   const TypeAryKlassPtr   *isa_aryklassptr() const;   // Returns NULL if not AryKlassPtr
 318   const TypeAryKlassPtr   *is_aryklassptr() const;    // assert if not AryKlassPtr
 319 
 320   virtual bool      is_finite() const;           // Has a finite value
 321   virtual bool      is_nan()    const;           // Is not a number (NaN)
 322 



 323   // Returns this ptr type or the equivalent ptr type for this compressed pointer.
 324   const TypePtr* make_ptr() const;
 325 
 326   // Returns this oopptr type or the equivalent oopptr type for this compressed pointer.
 327   // Asserts if the underlying type is not an oopptr or narrowoop.
 328   const TypeOopPtr* make_oopptr() const;
 329 
 330   // Returns this compressed pointer or the equivalent compressed version
 331   // of this pointer type.
 332   const TypeNarrowOop* make_narrowoop() const;
 333 
 334   // Returns this compressed klass pointer or the equivalent
 335   // compressed version of this pointer type.
 336   const TypeNarrowKlass* make_narrowklass() const;
 337 
 338   // Special test for register pressure heuristic
 339   bool is_floatingpoint() const;        // True if Float or Double base type
 340 
 341   // Do you have memory, directly or through a tuple?
 342   bool has_memory( ) const;

 701   const Type ** const _fields;           // Array of field types
 702 
 703 public:
 704   virtual bool eq( const Type *t ) const;
 705   virtual int  hash() const;             // Type specific hashing
 706   virtual bool singleton(void) const;    // TRUE if type is a singleton
 707   virtual bool empty(void) const;        // TRUE if type is vacuous
 708 
 709   // Accessors:
 710   uint cnt() const { return _cnt; }
 711   const Type* field_at(uint i) const {
 712     assert(i < _cnt, "oob");
 713     return _fields[i];
 714   }
 715   void set_field_at(uint i, const Type* t) {
 716     assert(i < _cnt, "oob");
 717     _fields[i] = t;
 718   }
 719 
 720   static const TypeTuple *make( uint cnt, const Type **fields );
 721   static const TypeTuple *make_range(ciSignature *sig, InterfaceHandling interface_handling = ignore_interfaces);
 722   static const TypeTuple *make_domain(ciInstanceKlass* recv, ciSignature *sig, InterfaceHandling interface_handling);
 723 
 724   // Subroutine call type with space allocated for argument types
 725   // Memory for Control, I_O, Memory, FramePtr, and ReturnAdr is allocated implicitly
 726   static const Type **fields( uint arg_cnt );
 727 
 728   virtual const Type *xmeet( const Type *t ) const;
 729   virtual const Type *xdual() const;    // Compute dual right now.
 730   // Convenience common pre-built types.
 731   static const TypeTuple *IFBOTH;
 732   static const TypeTuple *IFFALSE;
 733   static const TypeTuple *IFTRUE;
 734   static const TypeTuple *IFNEITHER;
 735   static const TypeTuple *LOOPBODY;
 736   static const TypeTuple *MEMBAR;
 737   static const TypeTuple *STORECONDITIONAL;
 738   static const TypeTuple *START_I2C;
 739   static const TypeTuple *INT_PAIR;
 740   static const TypeTuple *LONG_PAIR;
 741   static const TypeTuple *INT_CC_PAIR;
 742   static const TypeTuple *LONG_CC_PAIR;
 743 #ifndef PRODUCT
 744   virtual void dump2( Dict &d, uint, outputStream *st  ) const; // Specialized per-Type dumping
 745 #endif
 746 };
 747 
 748 //------------------------------TypeAry----------------------------------------
 749 // Class of Array Types
 750 class TypeAry : public Type {
 751   TypeAry(const Type* elem, const TypeInt* size, bool stable) : Type(Array),
 752       _elem(elem), _size(size), _stable(stable) {}
 753 public:
 754   virtual bool eq( const Type *t ) const;
 755   virtual int  hash() const;             // Type specific hashing
 756   virtual bool singleton(void) const;    // TRUE if type is a singleton
 757   virtual bool empty(void) const;        // TRUE if type is vacuous
 758 
 759 private:
 760   const Type *_elem;            // Element type of array
 761   const TypeInt *_size;         // Elements in array
 762   const bool _stable;           // Are elements @Stable?






 763   friend class TypeAryPtr;
 764 
 765 public:
 766   static const TypeAry* make(const Type* elem, const TypeInt* size, bool stable = false);

 767 
 768   virtual const Type *xmeet( const Type *t ) const;
 769   virtual const Type *xdual() const;    // Compute dual right now.
 770   bool ary_must_be_exact() const;  // true if arrays of such are never generic
 771   virtual const TypeAry* remove_speculative() const;
 772   virtual const Type* cleanup_speculative() const;
 773 #ifndef PRODUCT
 774   virtual void dump2( Dict &d, uint, outputStream *st  ) const; // Specialized per-Type dumping
 775 #endif
 776 };
 777 
 778 //------------------------------TypeVect---------------------------------------
 779 // Class of Vector Types
 780 class TypeVect : public Type {
 781   const Type*   _elem;  // Vector's element type
 782   const uint  _length;  // Elements in vector (power of 2)
 783 
 784 protected:
 785   TypeVect(TYPES t, const Type* elem, uint length) : Type(t),
 786     _elem(elem), _length(length) {}

 907     inline void* operator new(size_t x) throw() {
 908       Compile* compile = Compile::current();
 909       return compile->type_arena()->AmallocWords(x);
 910     }
 911     inline void operator delete( void* ptr ) {
 912       ShouldNotReachHere();
 913     }
 914     ciKlass* exact_klass() const;
 915     bool is_loaded() const;
 916 
 917     static int compare(ciKlass* const &, ciKlass* const & k2);
 918 
 919     void compute_is_loaded();
 920   };
 921 
 922   static InterfaceSet interfaces(ciKlass*& k, bool klass, bool interface, bool array, InterfaceHandling interface_handling);
 923 
 924 public:
 925   enum PTR { TopPTR, AnyNull, Constant, Null, NotNull, BotPTR, lastPTR };
 926 protected:
 927   TypePtr(TYPES t, PTR ptr, int offset,
 928           const TypePtr* speculative = NULL,
 929           int inline_depth = InlineDepthBottom) :
 930     Type(t), _speculative(speculative), _inline_depth(inline_depth), _offset(offset),
 931     _ptr(ptr) {}
 932   static const PTR ptr_meet[lastPTR][lastPTR];
 933   static const PTR ptr_dual[lastPTR];
 934   static const char * const ptr_msg[lastPTR];
 935 
 936   enum {
 937     InlineDepthBottom = INT_MAX,
 938     InlineDepthTop = -InlineDepthBottom
 939   };
 940 
 941   // Extra type information profiling gave us. We propagate it the
 942   // same way the rest of the type info is propagated. If we want to
 943   // use it, then we have to emit a guard: this part of the type is
 944   // not something we know but something we speculate about the type.
 945   const TypePtr*   _speculative;
 946   // For speculative types, we record at what inlining depth the
 947   // profiling point that provided the data is. We want to favor

 962 
 963   // utility methods to work on the inline depth of the type
 964   int dual_inline_depth() const;
 965   int meet_inline_depth(int depth) const;
 966 #ifndef PRODUCT
 967   void dump_inline_depth(outputStream *st) const;
 968 #endif
 969 
 970   // TypeInstPtr (TypeAryPtr resp.) and TypeInstKlassPtr (TypeAryKlassPtr resp.) implement very similar meet logic.
 971   // The logic for meeting 2 instances (2 arrays resp.) is shared in the 2 utility methods below. However the logic for
 972   // the oop and klass versions can be slightly different and extra logic may have to be executed depending on what
 973   // exact case the meet falls into. The MeetResult struct is used by the utility methods to communicate what case was
 974   // encountered so the right logic specific to klasses or oops can be executed.,
 975   enum MeetResult {
 976     QUICK,
 977     UNLOADED,
 978     SUBTYPE,
 979     NOT_SUBTYPE,
 980     LCA
 981   };
 982   template<class T> static TypePtr::MeetResult meet_instptr(PTR& ptr, InterfaceSet& interfaces, const T* this_type,
 983                                                             const T* other_type, ciKlass*& res_klass, bool& res_xk);
 984 
 985   template<class T> static MeetResult meet_aryptr(PTR& ptr, const Type*& elem, const T* this_ary, const T* other_ary,
 986                                                   ciKlass*& res_klass, bool& res_xk);
 987 
 988   template <class T1, class T2> static bool is_java_subtype_of_helper_for_instance(const T1* this_one, const T2* other, bool this_exact, bool other_exact);
 989   template <class T1, class T2> static bool is_same_java_type_as_helper_for_instance(const T1* this_one, const T2* other);
 990   template <class T1, class T2> static bool maybe_java_subtype_of_helper_for_instance(const T1* this_one, const T2* other, bool this_exact, bool other_exact);
 991   template <class T1, class T2> static bool is_java_subtype_of_helper_for_array(const T1* this_one, const T2* other, bool this_exact, bool other_exact);
 992   template <class T1, class T2> static bool is_same_java_type_as_helper_for_array(const T1* this_one, const T2* other);
 993   template <class T1, class T2> static bool maybe_java_subtype_of_helper_for_array(const T1* this_one, const T2* other, bool this_exact, bool other_exact);
 994   template <class T1, class T2> static bool is_meet_subtype_of_helper_for_instance(const T1* this_one, const T2* other, bool this_xk, bool other_xk);
 995   template <class T1, class T2> static bool is_meet_subtype_of_helper_for_array(const T1* this_one, const T2* other, bool this_xk, bool other_xk);
 996 public:
 997   const int _offset;            // Offset into oop, with TOP & BOT
 998   const PTR _ptr;               // Pointer equivalence class
 999 
1000   const int offset() const { return _offset; }
1001   const PTR ptr()    const { return _ptr; }
1002 
1003   static const TypePtr *make(TYPES t, PTR ptr, int offset,
1004                              const TypePtr* speculative = NULL,
1005                              int inline_depth = InlineDepthBottom);
1006 
1007   // Return a 'ptr' version of this type
1008   virtual const TypePtr* cast_to_ptr_type(PTR ptr) const;
1009 
1010   virtual intptr_t get_con() const;
1011 
1012   int xadd_offset( intptr_t offset ) const;
1013   virtual const TypePtr* add_offset(intptr_t offset) const;
1014   virtual const TypePtr* with_offset(intptr_t offset) const;

1015   virtual bool eq(const Type *t) const;
1016   virtual int  hash() const;             // Type specific hashing
1017 
1018   virtual bool singleton(void) const;    // TRUE if type is a singleton
1019   virtual bool empty(void) const;        // TRUE if type is vacuous
1020   virtual const Type *xmeet( const Type *t ) const;
1021   virtual const Type *xmeet_helper( const Type *t ) const;
1022   int meet_offset( int offset ) const;
1023   int dual_offset( ) const;
1024   virtual const Type *xdual() const;    // Compute dual right now.
1025 
1026   // meet, dual and join over pointer equivalence sets
1027   PTR meet_ptr( const PTR in_ptr ) const { return ptr_meet[in_ptr][ptr()]; }
1028   PTR dual_ptr()                   const { return ptr_dual[ptr()];      }
1029 
1030   // This is textually confusing unless one recalls that
1031   // join(t) == dual()->meet(t->dual())->dual().
1032   PTR join_ptr( const PTR in_ptr ) const {
1033     return ptr_dual[ ptr_meet[ ptr_dual[in_ptr] ] [ dual_ptr() ] ];
1034   }
1035 
1036   // Speculative type helper methods.
1037   virtual const TypePtr* speculative() const { return _speculative; }
1038   int inline_depth() const                   { return _inline_depth; }
1039   virtual ciKlass* speculative_type() const;
1040   virtual ciKlass* speculative_type_not_null() const;
1041   virtual bool speculative_maybe_null() const;
1042   virtual bool speculative_always_null() const;
1043   virtual const TypePtr* remove_speculative() const;
1044   virtual const Type* cleanup_speculative() const;
1045   virtual bool would_improve_type(ciKlass* exact_kls, int inline_depth) const;
1046   virtual bool would_improve_ptr(ProfilePtrKind maybe_null) const;
1047   virtual const TypePtr* with_inline_depth(int depth) const;
1048 
1049   virtual bool maybe_null() const { return meet_ptr(Null) == ptr(); }
1050 








1051   // Tests for relation to centerline of type lattice:
1052   static bool above_centerline(PTR ptr) { return (ptr <= AnyNull); }
1053   static bool below_centerline(PTR ptr) { return (ptr >= NotNull); }
1054   // Convenience common pre-built types.
1055   static const TypePtr *NULL_PTR;
1056   static const TypePtr *NOTNULL;
1057   static const TypePtr *BOTTOM;
1058 #ifndef PRODUCT
1059   virtual void dump2( Dict &d, uint depth, outputStream *st  ) const;
1060 #endif
1061 };
1062 
1063 //------------------------------TypeRawPtr-------------------------------------
1064 // Class of raw pointers, pointers to things other than Oops.  Examples
1065 // include the stack pointer, top of heap, card-marking area, handles, etc.
1066 class TypeRawPtr : public TypePtr {
1067 protected:
1068   TypeRawPtr( PTR ptr, address bits ) : TypePtr(RawPtr,ptr,0), _bits(bits){}
1069 public:
1070   virtual bool eq( const Type *t ) const;
1071   virtual int  hash() const;     // Type specific hashing
1072 
1073   const address _bits;          // Constant value, if applicable
1074 
1075   static const TypeRawPtr *make( PTR ptr );
1076   static const TypeRawPtr *make( address bits );
1077 
1078   // Return a 'ptr' version of this type
1079   virtual const TypeRawPtr* cast_to_ptr_type(PTR ptr) const;
1080 
1081   virtual intptr_t get_con() const;
1082 
1083   virtual const TypePtr* add_offset(intptr_t offset) const;
1084   virtual const TypeRawPtr* with_offset(intptr_t offset) const { ShouldNotReachHere(); return NULL;}
1085 
1086   virtual const Type *xmeet( const Type *t ) const;
1087   virtual const Type *xdual() const;    // Compute dual right now.
1088   // Convenience common pre-built types.
1089   static const TypeRawPtr *BOTTOM;
1090   static const TypeRawPtr *NOTNULL;
1091 #ifndef PRODUCT
1092   virtual void dump2( Dict &d, uint depth, outputStream *st  ) const;
1093 #endif
1094 };
1095 
1096 //------------------------------TypeOopPtr-------------------------------------
1097 // Some kind of oop (Java pointer), either instance or array.
1098 class TypeOopPtr : public TypePtr {
1099   friend class TypeAry;
1100   friend class TypePtr;
1101   friend class TypeInstPtr;
1102   friend class TypeAryPtr;
1103 protected:
1104  TypeOopPtr(TYPES t, PTR ptr, ciKlass* k, const InterfaceSet& interfaces, bool xk, ciObject* o, int offset, int instance_id,
1105              const TypePtr* speculative, int inline_depth);
1106 public:
1107   virtual bool eq( const Type *t ) const;
1108   virtual int  hash() const;             // Type specific hashing
1109   virtual bool singleton(void) const;    // TRUE if type is a singleton
1110   enum {
1111    InstanceTop = -1,   // undefined instance
1112    InstanceBot = 0     // any possible instance
1113   };
1114 protected:
1115 
1116   // Oop is NULL, unless this is a constant oop.
1117   ciObject*     _const_oop;   // Constant oop
1118   // If _klass is NULL, then so is _sig.  This is an unloaded klass.
1119   ciKlass*      _klass;       // Klass object
1120 
1121   const InterfaceSet _interfaces;
1122 
1123   // Does the type exclude subclasses of the klass?  (Inexact == polymorphic.)
1124   bool          _klass_is_exact;
1125   bool          _is_ptr_to_narrowoop;
1126   bool          _is_ptr_to_narrowklass;
1127   bool          _is_ptr_to_boxed_value;
1128 
1129   // If not InstanceTop or InstanceBot, indicates that this is
1130   // a particular instance of this type which is distinct.
1131   // This is the node index of the allocation node creating this instance.
1132   int           _instance_id;
1133 
1134   static const TypeOopPtr* make_from_klass_common(ciKlass* klass, bool klass_change, bool try_for_exact, InterfaceHandling interface_handling);
1135 
1136   int dual_instance_id() const;
1137   int meet_instance_id(int uid) const;
1138 
1139   InterfaceSet meet_interfaces(const TypeOopPtr* other) const;
1140 
1141   // Do not allow interface-vs.-noninterface joins to collapse to top.
1142   virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
1143 
1144   virtual ciKlass* exact_klass_helper() const { return NULL; }
1145   virtual ciKlass* klass() const { return _klass;     }
1146 
1147 public:
1148 
1149   bool is_java_subtype_of(const TypeOopPtr* other) const {
1150     return is_java_subtype_of_helper(other, klass_is_exact(), other->klass_is_exact());
1151   }
1152 
1153   bool is_same_java_type_as(const TypePtr* other) const {
1154     return is_same_java_type_as_helper(other->is_oopptr());
1155   }
1156 
1157   virtual bool is_same_java_type_as_helper(const TypeOopPtr* other) const {
1158     ShouldNotReachHere(); return false;
1159   }
1160 
1161   bool maybe_java_subtype_of(const TypeOopPtr* other) const {
1162     return maybe_java_subtype_of_helper(other, klass_is_exact(), other->klass_is_exact());
1163   }
1164   virtual bool is_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const { ShouldNotReachHere(); return false; }
1165   virtual bool maybe_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const { ShouldNotReachHere(); return false; }

1172     return make_from_klass_common(klass, true, false, interface_handling);
1173   }
1174   // Same as before, but will produce an exact type, even if
1175   // the klass is not final, as long as it has exactly one implementation.
1176   static const TypeOopPtr* make_from_klass_unique(ciKlass* klass, InterfaceHandling interface_handling= ignore_interfaces) {
1177     return make_from_klass_common(klass, true, true, interface_handling);
1178   }
1179   // Same as before, but does not respects UseUniqueSubclasses.
1180   // Use this only for creating array element types.
1181   static const TypeOopPtr* make_from_klass_raw(ciKlass* klass, InterfaceHandling interface_handling = ignore_interfaces) {
1182     return make_from_klass_common(klass, false, false, interface_handling);
1183   }
1184   // Creates a singleton type given an object.
1185   // If the object cannot be rendered as a constant,
1186   // may return a non-singleton type.
1187   // If require_constant, produce a NULL if a singleton is not possible.
1188   static const TypeOopPtr* make_from_constant(ciObject* o,
1189                                               bool require_constant = false);
1190 
1191   // Make a generic (unclassed) pointer to an oop.
1192   static const TypeOopPtr* make(PTR ptr, int offset, int instance_id,
1193                                 const TypePtr* speculative = NULL,
1194                                 int inline_depth = InlineDepthBottom);
1195 
1196   ciObject* const_oop()    const { return _const_oop; }
1197   // Exact klass, possibly an interface or an array of interface
1198   ciKlass* exact_klass(bool maybe_null = false) const { assert(klass_is_exact(), ""); ciKlass* k = exact_klass_helper(); assert(k != NULL || maybe_null, ""); return k;  }
1199   ciKlass* unloaded_klass() const { assert(!is_loaded(), "only for unloaded types"); return klass(); }
1200 
1201   virtual bool  is_loaded() const { return klass()->is_loaded() && _interfaces.is_loaded(); }
1202   virtual bool klass_is_exact()    const { return _klass_is_exact; }
1203 
1204   // Returns true if this pointer points at memory which contains a
1205   // compressed oop references.
1206   bool is_ptr_to_narrowoop_nv() const { return _is_ptr_to_narrowoop; }
1207   bool is_ptr_to_narrowklass_nv() const { return _is_ptr_to_narrowklass; }
1208   bool is_ptr_to_boxed_value()   const { return _is_ptr_to_boxed_value; }
1209   bool is_known_instance()       const { return _instance_id > 0; }
1210   int  instance_id()             const { return _instance_id; }
1211   bool is_known_instance_field() const { return is_known_instance() && _offset >= 0; }



1212 
1213   virtual intptr_t get_con() const;
1214 
1215   virtual const TypeOopPtr* cast_to_ptr_type(PTR ptr) const;
1216 
1217   virtual const TypeOopPtr* cast_to_exactness(bool klass_is_exact) const;
1218 
1219   virtual const TypeOopPtr *cast_to_instance_id(int instance_id) const;
1220 
1221   // corresponding pointer to klass, for a given instance
1222   virtual const TypeKlassPtr* as_klass_type(bool try_for_exact = false) const;
1223 
1224   virtual const TypeOopPtr* with_offset(intptr_t offset) const;
1225   virtual const TypePtr* add_offset(intptr_t offset) const;
1226 
1227   // Speculative type helper methods.
1228   virtual const TypeOopPtr* remove_speculative() const;
1229   virtual const Type* cleanup_speculative() const;
1230   virtual bool would_improve_type(ciKlass* exact_kls, int inline_depth) const;
1231   virtual const TypePtr* with_inline_depth(int depth) const;

1254     return _interfaces;
1255   };
1256 
1257   const TypeOopPtr* is_reference_type(const Type* other) const {
1258     return other->isa_oopptr();
1259   }
1260 
1261   const TypeAryPtr* is_array_type(const TypeOopPtr* other) const {
1262     return other->isa_aryptr();
1263   }
1264 
1265   const TypeInstPtr* is_instance_type(const TypeOopPtr* other) const {
1266     return other->isa_instptr();
1267   }
1268 };
1269 
1270 //------------------------------TypeInstPtr------------------------------------
1271 // Class of Java object pointers, pointing either to non-array Java instances
1272 // or to a Klass* (including array klasses).
1273 class TypeInstPtr : public TypeOopPtr {
1274   TypeInstPtr(PTR ptr, ciKlass* k, const InterfaceSet& interfaces, bool xk, ciObject* o, int offset, int instance_id,
1275               const TypePtr* speculative, int inline_depth);

1276   virtual bool eq( const Type *t ) const;
1277   virtual int  hash() const;             // Type specific hashing
1278 

1279   ciKlass* exact_klass_helper() const;
1280 
1281 public:
1282 
1283   // Instance klass, ignoring any interface
1284   ciInstanceKlass* instance_klass() const {
1285     assert(!(klass()->is_loaded() && klass()->is_interface()), "");
1286     return klass()->as_instance_klass();
1287   }
1288 
1289   bool is_same_java_type_as_helper(const TypeOopPtr* other) const;
1290   bool is_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const;
1291   bool maybe_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const;
1292 
1293   // Make a pointer to a constant oop.
1294   static const TypeInstPtr *make(ciObject* o) {
1295     ciKlass* k = o->klass();
1296     const TypePtr::InterfaceSet interfaces = TypePtr::interfaces(k, true, false, false, ignore_interfaces);
1297     return make(TypePtr::Constant, k, interfaces, true, o, 0, InstanceBot);
1298   }
1299   // Make a pointer to a constant oop with offset.
1300   static const TypeInstPtr *make(ciObject* o, int offset) {
1301     ciKlass* k = o->klass();
1302     const TypePtr::InterfaceSet interfaces = TypePtr::interfaces(k, true, false, false, ignore_interfaces);
1303     return make(TypePtr::Constant, k, interfaces, true, o, offset, InstanceBot);
1304   }
1305 
1306   // Make a pointer to some value of type klass.
1307   static const TypeInstPtr *make(PTR ptr, ciKlass* klass, InterfaceHandling interface_handling = ignore_interfaces) {
1308     const TypePtr::InterfaceSet interfaces = TypePtr::interfaces(klass, true, true, false, interface_handling);
1309     return make(ptr, klass, interfaces, false, NULL, 0, InstanceBot);
1310   }
1311 
1312   // Make a pointer to some non-polymorphic value of exactly type klass.
1313   static const TypeInstPtr *make_exact(PTR ptr, ciKlass* klass) {
1314     const TypePtr::InterfaceSet interfaces = TypePtr::interfaces(klass, true, false, false, ignore_interfaces);
1315     return make(ptr, klass, interfaces, true, NULL, 0, InstanceBot);
1316   }
1317 
1318   // Make a pointer to some value of type klass with offset.
1319   static const TypeInstPtr *make(PTR ptr, ciKlass* klass, int offset) {
1320     const TypePtr::InterfaceSet interfaces = TypePtr::interfaces(klass, true, false, false, ignore_interfaces);
1321     return make(ptr, klass, interfaces, false, NULL, offset, InstanceBot);
1322   }
1323 
1324   static const TypeInstPtr *make(PTR ptr, ciKlass* k, const InterfaceSet& interfaces, bool xk, ciObject* o, int offset,


1325                                  int instance_id = InstanceBot,
1326                                  const TypePtr* speculative = NULL,
1327                                  int inline_depth = InlineDepthBottom);
1328 
1329   static const TypeInstPtr *make(PTR ptr, ciKlass* k, bool xk, ciObject* o, int offset, int instance_id = InstanceBot) {
1330     const TypePtr::InterfaceSet interfaces = TypePtr::interfaces(k, true, false, false, ignore_interfaces);
1331     return make(ptr, k, interfaces, xk, o, offset, instance_id);
1332   }
1333 
1334   /** Create constant type for a constant boxed value */
1335   const Type* get_const_boxed_value() const;
1336 
1337   // If this is a java.lang.Class constant, return the type for it or NULL.
1338   // Pass to Type::get_const_type to turn it to a type, which will usually
1339   // be a TypeInstPtr, but may also be a TypeInt::INT for int.class, etc.
1340   ciType* java_mirror_type() const;
1341 
1342   virtual const TypeInstPtr* cast_to_ptr_type(PTR ptr) const;
1343 
1344   virtual const TypeInstPtr* cast_to_exactness(bool klass_is_exact) const;
1345 
1346   virtual const TypeInstPtr* cast_to_instance_id(int instance_id) const;
1347 
1348   virtual const TypePtr* add_offset(intptr_t offset) const;
1349   virtual const TypeInstPtr* with_offset(intptr_t offset) const;
1350 
1351   // Speculative type helper methods.
1352   virtual const TypeInstPtr* remove_speculative() const;
1353   virtual const TypePtr* with_inline_depth(int depth) const;
1354   virtual const TypePtr* with_instance_id(int instance_id) const;
1355 




1356   // the core of the computation of the meet of 2 types
1357   virtual const Type *xmeet_helper(const Type *t) const;
1358   virtual const TypeInstPtr *xmeet_unloaded(const TypeInstPtr *t, const InterfaceSet& interfaces) const;
1359   virtual const Type *xdual() const;    // Compute dual right now.
1360 
1361   const TypeKlassPtr* as_klass_type(bool try_for_exact = false) const;
1362 


1363   // Convenience common pre-built types.
1364   static const TypeInstPtr *NOTNULL;
1365   static const TypeInstPtr *BOTTOM;
1366   static const TypeInstPtr *MIRROR;
1367   static const TypeInstPtr *MARK;
1368   static const TypeInstPtr *KLASS;
1369 #ifndef PRODUCT
1370   virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
1371 #endif
1372 
1373 private:
1374   virtual bool is_meet_subtype_of_helper(const TypeOopPtr* other, bool this_xk, bool other_xk) const;
1375 
1376   virtual bool is_meet_same_type_as(const TypePtr* other) const {
1377     return _klass->equals(other->is_instptr()->_klass) && _interfaces.eq(other->is_instptr()->_interfaces);
1378   }
1379 
1380 };
1381 
1382 //------------------------------TypeAryPtr-------------------------------------
1383 // Class of Java array pointers
1384 class TypeAryPtr : public TypeOopPtr {
1385   friend class Type;
1386   friend class TypePtr;

1387 
1388   TypeAryPtr( PTR ptr, ciObject* o, const TypeAry *ary, ciKlass* k, bool xk,
1389               int offset, int instance_id, bool is_autobox_cache,
1390               const TypePtr* speculative, int inline_depth)
1391     : TypeOopPtr(AryPtr,ptr,k,*_array_interfaces,xk,o,offset, instance_id, speculative, inline_depth),
1392     _ary(ary),
1393     _is_autobox_cache(is_autobox_cache)

1394  {
1395     int dummy;
1396     bool top_or_bottom = (base_element_type(dummy) == Type::TOP || base_element_type(dummy) == Type::BOTTOM);
1397 
1398     if (UseCompressedOops && (elem()->make_oopptr() != NULL && !top_or_bottom) &&
1399         _offset != 0 && _offset != arrayOopDesc::length_offset_in_bytes() &&
1400         _offset != arrayOopDesc::klass_offset_in_bytes()) {
1401       _is_ptr_to_narrowoop = true;
1402     }
1403 
1404   }
1405   virtual bool eq( const Type *t ) const;
1406   virtual int hash() const;     // Type specific hashing
1407   const TypeAry *_ary;          // Array we point into
1408   const bool     _is_autobox_cache;






1409 
1410   ciKlass* compute_klass(DEBUG_ONLY(bool verify = false)) const;
1411 
1412   // A pointer to delay allocation to Type::Initialize_shared()
1413 
1414   static const InterfaceSet* _array_interfaces;
1415   ciKlass* exact_klass_helper() const;
1416   // Only guaranteed non null for array of basic types
1417   ciKlass* klass() const;
1418 
1419 public:
1420 
1421   bool is_same_java_type_as_helper(const TypeOopPtr* other) const;
1422   bool is_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const;
1423   bool maybe_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const;
1424 
1425   // returns base element type, an instance klass (and not interface) for object arrays
1426   const Type* base_element_type(int& dims) const;
1427 
1428   // Accessors
1429   bool  is_loaded() const { return (_ary->_elem->make_oopptr() ? _ary->_elem->make_oopptr()->is_loaded() : true); }
1430 
1431   const TypeAry* ary() const  { return _ary; }
1432   const Type*    elem() const { return _ary->_elem; }
1433   const TypeInt* size() const { return _ary->_size; }
1434   bool      is_stable() const { return _ary->_stable; }
1435 






1436   bool is_autobox_cache() const { return _is_autobox_cache; }
1437 
1438   static const TypeAryPtr *make(PTR ptr, const TypeAry *ary, ciKlass* k, bool xk, int offset,

1439                                 int instance_id = InstanceBot,
1440                                 const TypePtr* speculative = NULL,
1441                                 int inline_depth = InlineDepthBottom);
1442   // Constant pointer to array
1443   static const TypeAryPtr *make(PTR ptr, ciObject* o, const TypeAry *ary, ciKlass* k, bool xk, int offset,

1444                                 int instance_id = InstanceBot,
1445                                 const TypePtr* speculative = NULL,
1446                                 int inline_depth = InlineDepthBottom, bool is_autobox_cache = false);

1447 
1448   // Return a 'ptr' version of this type
1449   virtual const TypeAryPtr* cast_to_ptr_type(PTR ptr) const;
1450 
1451   virtual const TypeAryPtr* cast_to_exactness(bool klass_is_exact) const;
1452 
1453   virtual const TypeAryPtr* cast_to_instance_id(int instance_id) const;
1454 
1455   virtual const TypeAryPtr* cast_to_size(const TypeInt* size) const;
1456   virtual const TypeInt* narrow_size_type(const TypeInt* size) const;
1457 
1458   virtual bool empty(void) const;        // TRUE if type is vacuous
1459   virtual const TypePtr *add_offset( intptr_t offset ) const;
1460   virtual const TypeAryPtr *with_offset( intptr_t offset ) const;
1461   const TypeAryPtr* with_ary(const TypeAry* ary) const;
1462 
1463   // Speculative type helper methods.
1464   virtual const TypeAryPtr* remove_speculative() const;

1465   virtual const TypePtr* with_inline_depth(int depth) const;
1466   virtual const TypePtr* with_instance_id(int instance_id) const;
1467 
1468   // the core of the computation of the meet of 2 types
1469   virtual const Type *xmeet_helper(const Type *t) const;
1470   virtual const Type *xdual() const;    // Compute dual right now.
1471 








1472   const TypeAryPtr* cast_to_stable(bool stable, int stable_dimension = 1) const;
1473   int stable_dimension() const;
1474 
1475   const TypeAryPtr* cast_to_autobox_cache() const;
1476 
1477   static jint max_array_length(BasicType etype) ;







1478   virtual const TypeKlassPtr* as_klass_type(bool try_for_exact = false) const;
1479 


1480   // Convenience common pre-built types.
1481   static const TypeAryPtr *RANGE;
1482   static const TypeAryPtr *OOPS;
1483   static const TypeAryPtr *NARROWOOPS;
1484   static const TypeAryPtr *BYTES;
1485   static const TypeAryPtr *SHORTS;
1486   static const TypeAryPtr *CHARS;
1487   static const TypeAryPtr *INTS;
1488   static const TypeAryPtr *LONGS;
1489   static const TypeAryPtr *FLOATS;
1490   static const TypeAryPtr *DOUBLES;

1491   // selects one of the above:
1492   static const TypeAryPtr *get_array_body_type(BasicType elem) {
1493     assert((uint)elem <= T_CONFLICT && _array_body_type[elem] != NULL, "bad elem type");
1494     return _array_body_type[elem];
1495   }
1496   static const TypeAryPtr *_array_body_type[T_CONFLICT+1];
1497   // sharpen the type of an int which is used as an array size
1498 #ifndef PRODUCT
1499   virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
1500 #endif
1501 private:
1502   virtual bool is_meet_subtype_of_helper(const TypeOopPtr* other, bool this_xk, bool other_xk) const;
1503 };
1504 
1505 //------------------------------TypeMetadataPtr-------------------------------------
1506 // Some kind of metadata, either Method*, MethodData* or CPCacheOop
1507 class TypeMetadataPtr : public TypePtr {
1508 protected:
1509   TypeMetadataPtr(PTR ptr, ciMetadata* metadata, int offset);
1510   // Do not allow interface-vs.-noninterface joins to collapse to top.
1511   virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
1512 public:
1513   virtual bool eq( const Type *t ) const;
1514   virtual int  hash() const;             // Type specific hashing
1515   virtual bool singleton(void) const;    // TRUE if type is a singleton
1516 
1517 private:
1518   ciMetadata*   _metadata;
1519 
1520 public:
1521   static const TypeMetadataPtr* make(PTR ptr, ciMetadata* m, int offset);
1522 
1523   static const TypeMetadataPtr* make(ciMethod* m);
1524   static const TypeMetadataPtr* make(ciMethodData* m);
1525 
1526   ciMetadata* metadata() const { return _metadata; }
1527 
1528   virtual const TypeMetadataPtr* cast_to_ptr_type(PTR ptr) const;
1529 
1530   virtual const TypePtr *add_offset( intptr_t offset ) const;
1531 
1532   virtual const Type *xmeet( const Type *t ) const;
1533   virtual const Type *xdual() const;    // Compute dual right now.
1534 
1535   virtual intptr_t get_con() const;
1536 
1537   // Convenience common pre-built types.
1538   static const TypeMetadataPtr *BOTTOM;
1539 
1540 #ifndef PRODUCT
1541   virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
1542 #endif
1543 };
1544 
1545 //------------------------------TypeKlassPtr-----------------------------------
1546 // Class of Java Klass pointers
1547 class TypeKlassPtr : public TypePtr {
1548   friend class TypeInstKlassPtr;
1549   friend class TypeAryKlassPtr;
1550   friend class TypePtr;
1551 protected:
1552   TypeKlassPtr(TYPES t, PTR ptr, ciKlass* klass, const InterfaceSet& interfaces, int offset);
1553 
1554   virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
1555 
1556 public:
1557   virtual bool eq( const Type *t ) const;
1558   virtual int hash() const;
1559   virtual bool singleton(void) const;    // TRUE if type is a singleton
1560 
1561 protected:
1562 
1563   ciKlass* _klass;
1564   const InterfaceSet _interfaces;
1565   InterfaceSet meet_interfaces(const TypeKlassPtr* other) const;
1566   virtual bool must_be_exact() const { ShouldNotReachHere(); return false; }
1567   virtual ciKlass* exact_klass_helper() const;
1568   virtual ciKlass* klass() const { return  _klass; }
1569 
1570 public:
1571 
1572   bool is_java_subtype_of(const TypeKlassPtr* other) const {
1573     return is_java_subtype_of_helper(other, klass_is_exact(), other->klass_is_exact());
1574   }
1575   bool is_same_java_type_as(const TypePtr* other) const {
1576     return is_same_java_type_as_helper(other->is_klassptr());
1577   }
1578 
1579   bool maybe_java_subtype_of(const TypeKlassPtr* other) const {
1580     return maybe_java_subtype_of_helper(other, klass_is_exact(), other->klass_is_exact());
1581   }
1582   virtual bool is_same_java_type_as_helper(const TypeKlassPtr* other) const { ShouldNotReachHere(); return false; }
1583   virtual bool is_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const { ShouldNotReachHere(); return false; }
1584   virtual bool maybe_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const { ShouldNotReachHere(); return false; }
1585 
1586   // Exact klass, possibly an interface or an array of interface
1587   ciKlass* exact_klass(bool maybe_null = false) const { assert(klass_is_exact(), ""); ciKlass* k = exact_klass_helper(); assert(k != NULL || maybe_null, ""); return k;  }
1588   virtual bool klass_is_exact()    const { return _ptr == Constant; }
1589 
1590   static const TypeKlassPtr* make(ciKlass* klass, InterfaceHandling interface_handling = ignore_interfaces);
1591   static const TypeKlassPtr *make(PTR ptr, ciKlass* klass, int offset, InterfaceHandling interface_handling = ignore_interfaces);
1592 
1593   virtual bool  is_loaded() const { return _klass->is_loaded(); }
1594 
1595   virtual const TypeKlassPtr* cast_to_ptr_type(PTR ptr) const { ShouldNotReachHere(); return NULL; }
1596 
1597   virtual const TypeKlassPtr *cast_to_exactness(bool klass_is_exact) const { ShouldNotReachHere(); return NULL; }
1598 
1599   // corresponding pointer to instance, for a given class
1600   virtual const TypeOopPtr* as_instance_type(bool klass_change = true) const { ShouldNotReachHere(); return NULL; }
1601 
1602   virtual const TypePtr *add_offset( intptr_t offset ) const { ShouldNotReachHere(); return NULL; }
1603   virtual const Type    *xmeet( const Type *t ) const { ShouldNotReachHere(); return NULL; }
1604   virtual const Type    *xdual() const { ShouldNotReachHere(); return NULL; }
1605 
1606   virtual intptr_t get_con() const;
1607 
1608   virtual const TypeKlassPtr* with_offset(intptr_t offset) const { ShouldNotReachHere(); return NULL; }
1609 

1610   virtual const TypeKlassPtr* try_improve() const { return this; }
1611 
1612 #ifndef PRODUCT
1613   virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
1614 #endif
1615 private:
1616   virtual bool is_meet_subtype_of(const TypePtr* other) const {
1617     return is_meet_subtype_of_helper(other->is_klassptr(), klass_is_exact(), other->is_klassptr()->klass_is_exact());
1618   }
1619 
1620   virtual bool is_meet_subtype_of_helper(const TypeKlassPtr* other, bool this_xk, bool other_xk) const {
1621     ShouldNotReachHere(); return false;
1622   }
1623 
1624   virtual const InterfaceSet interfaces() const {
1625     return _interfaces;
1626   };
1627 
1628   const TypeKlassPtr* is_reference_type(const Type* other) const {
1629     return other->isa_klassptr();
1630   }
1631 
1632   const TypeAryKlassPtr* is_array_type(const TypeKlassPtr* other) const {
1633     return other->isa_aryklassptr();
1634   }
1635 
1636   const TypeInstKlassPtr* is_instance_type(const TypeKlassPtr* other) const {
1637     return other->isa_instklassptr();
1638   }
1639 };
1640 
1641 // Instance klass pointer, mirrors TypeInstPtr
1642 class TypeInstKlassPtr : public TypeKlassPtr {
1643 
1644   TypeInstKlassPtr(PTR ptr, ciKlass* klass, const InterfaceSet& interfaces, int offset)
1645     : TypeKlassPtr(InstKlassPtr, ptr, klass, interfaces, offset) {
1646     assert(klass->is_instance_klass() && (!klass->is_loaded() || !klass->is_interface()), "");
1647   }
1648 
1649   virtual bool must_be_exact() const;
1650 


1651 public:
1652   // Instance klass ignoring any interface
1653   ciInstanceKlass* instance_klass() const {
1654     assert(!klass()->is_interface(), "");
1655     return klass()->as_instance_klass();
1656   }
1657 
1658   bool is_same_java_type_as_helper(const TypeKlassPtr* other) const;
1659   bool is_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const;
1660   bool maybe_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const;
1661 


1662   static const TypeInstKlassPtr *make(ciKlass* k, InterfaceHandling interface_handling) {
1663     InterfaceSet interfaces = TypePtr::interfaces(k, true, true, false, interface_handling);
1664     return make(TypePtr::Constant, k, interfaces, 0);
1665   }
1666   static const TypeInstKlassPtr* make(PTR ptr, ciKlass* k, const InterfaceSet& interfaces, int offset);
1667 
1668   static const TypeInstKlassPtr* make(PTR ptr, ciKlass* k, int offset) {
1669     const TypePtr::InterfaceSet interfaces = TypePtr::interfaces(k, true, false, false, ignore_interfaces);
1670     return make(ptr, k, interfaces, offset);
1671   }
1672 
1673   virtual const TypeInstKlassPtr* cast_to_ptr_type(PTR ptr) const;
1674 
1675   virtual const TypeKlassPtr *cast_to_exactness(bool klass_is_exact) const;
1676 
1677   // corresponding pointer to instance, for a given class
1678   virtual const TypeOopPtr* as_instance_type(bool klass_change = true) const;
1679   virtual int hash() const;
1680   virtual bool eq(const Type *t) const;
1681 
1682   virtual const TypePtr *add_offset( intptr_t offset ) const;
1683   virtual const Type    *xmeet( const Type *t ) const;
1684   virtual const Type    *xdual() const;
1685   virtual const TypeInstKlassPtr* with_offset(intptr_t offset) const;
1686 
1687   virtual const TypeKlassPtr* try_improve() const;
1688 





1689   // Convenience common pre-built types.
1690   static const TypeInstKlassPtr* OBJECT; // Not-null object klass or below
1691   static const TypeInstKlassPtr* OBJECT_OR_NULL; // Maybe-null version of same
1692 private:
1693   virtual bool is_meet_subtype_of_helper(const TypeKlassPtr* other, bool this_xk, bool other_xk) const;
1694 };
1695 
1696 // Array klass pointer, mirrors TypeAryPtr
1697 class TypeAryKlassPtr : public TypeKlassPtr {
1698   friend class TypeInstKlassPtr;
1699   friend class Type;
1700   friend class TypePtr;
1701 
1702   const Type *_elem;



1703 
1704   static const InterfaceSet* _array_interfaces;
1705   TypeAryKlassPtr(PTR ptr, const Type *elem, ciKlass* klass, int offset)
1706     : TypeKlassPtr(AryKlassPtr, ptr, klass, *_array_interfaces, offset), _elem(elem) {
1707     assert(klass == NULL || klass->is_type_array_klass() || !klass->as_obj_array_klass()->base_element_klass()->is_interface(), "");
1708   }
1709 
1710   virtual ciKlass* exact_klass_helper() const;
1711   // Only guaranteed non null for array of basic types
1712   virtual ciKlass* klass() const;
1713 
1714   virtual bool must_be_exact() const;
1715 








1716 public:
1717 
1718   // returns base element type, an instance klass (and not interface) for object arrays
1719   const Type* base_element_type(int& dims) const;
1720 
1721   static const TypeAryKlassPtr *make(PTR ptr, ciKlass* k, int offset, InterfaceHandling interface_handling);
1722 
1723   bool is_same_java_type_as_helper(const TypeKlassPtr* other) const;
1724   bool is_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const;
1725   bool maybe_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const;
1726 
1727   bool  is_loaded() const { return (_elem->isa_klassptr() ? _elem->is_klassptr()->is_loaded() : true); }
1728 
1729   static const TypeAryKlassPtr *make(PTR ptr, const Type *elem, ciKlass* k, int offset);

1730   static const TypeAryKlassPtr* make(ciKlass* klass, InterfaceHandling interface_handling);
1731 
1732   const Type *elem() const { return _elem; }
1733 
1734   virtual bool eq(const Type *t) const;
1735   virtual int hash() const;             // Type specific hashing
1736 
1737   virtual const TypeAryKlassPtr* cast_to_ptr_type(PTR ptr) const;
1738 
1739   virtual const TypeKlassPtr *cast_to_exactness(bool klass_is_exact) const;
1740 
1741   // corresponding pointer to instance, for a given class
1742   virtual const TypeOopPtr* as_instance_type(bool klass_change = true) const;
1743 
1744   virtual const TypePtr *add_offset( intptr_t offset ) const;
1745   virtual const Type    *xmeet( const Type *t ) const;
1746   virtual const Type    *xdual() const;      // Compute dual right now.
1747 
1748   virtual const TypeAryKlassPtr* with_offset(intptr_t offset) const;
1749 
1750   virtual bool empty(void) const {
1751     return TypeKlassPtr::empty() || _elem->empty();
1752   }
1753 






1754 #ifndef PRODUCT
1755   virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
1756 #endif
1757 private:
1758   virtual bool is_meet_subtype_of_helper(const TypeKlassPtr* other, bool this_xk, bool other_xk) const;
1759 };
1760 
1761 class TypeNarrowPtr : public Type {
1762 protected:
1763   const TypePtr* _ptrtype; // Could be TypePtr::NULL_PTR
1764 
1765   TypeNarrowPtr(TYPES t, const TypePtr* ptrtype): Type(t),
1766                                                   _ptrtype(ptrtype) {
1767     assert(ptrtype->offset() == 0 ||
1768            ptrtype->offset() == OffsetBot ||
1769            ptrtype->offset() == OffsetTop, "no real offsets");
1770   }
1771 
1772   virtual const TypeNarrowPtr *isa_same_narrowptr(const Type *t) const = 0;
1773   virtual const TypeNarrowPtr *is_same_narrowptr(const Type *t) const = 0;

1869   }
1870 
1871   virtual const TypeNarrowPtr *make_hash_same_narrowptr(const TypePtr *t) const {
1872     return (const TypeNarrowPtr*)((new TypeNarrowKlass(t))->hashcons());
1873   }
1874 
1875 public:
1876   static const TypeNarrowKlass *make( const TypePtr* type);
1877 
1878   // static const TypeNarrowKlass *BOTTOM;
1879   static const TypeNarrowKlass *NULL_PTR;
1880 
1881 #ifndef PRODUCT
1882   virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
1883 #endif
1884 };
1885 
1886 //------------------------------TypeFunc---------------------------------------
1887 // Class of Array Types
1888 class TypeFunc : public Type {
1889   TypeFunc( const TypeTuple *domain, const TypeTuple *range ) : Type(Function),  _domain(domain), _range(range) {}

1890   virtual bool eq( const Type *t ) const;
1891   virtual int  hash() const;             // Type specific hashing
1892   virtual bool singleton(void) const;    // TRUE if type is a singleton
1893   virtual bool empty(void) const;        // TRUE if type is vacuous
1894 
1895   const TypeTuple* const _domain;     // Domain of inputs
1896   const TypeTuple* const _range;      // Range of results











1897 
1898 public:
1899   // Constants are shared among ADLC and VM
1900   enum { Control    = AdlcVMDeps::Control,
1901          I_O        = AdlcVMDeps::I_O,
1902          Memory     = AdlcVMDeps::Memory,
1903          FramePtr   = AdlcVMDeps::FramePtr,
1904          ReturnAdr  = AdlcVMDeps::ReturnAdr,
1905          Parms      = AdlcVMDeps::Parms
1906   };
1907 
1908 
1909   // Accessors:
1910   const TypeTuple* domain() const { return _domain; }
1911   const TypeTuple* range()  const { return _range; }
1912 
1913   static const TypeFunc *make(ciMethod* method);
1914   static const TypeFunc *make(ciSignature signature, const Type* extra);



1915   static const TypeFunc *make(const TypeTuple* domain, const TypeTuple* range);
1916 
1917   virtual const Type *xmeet( const Type *t ) const;
1918   virtual const Type *xdual() const;    // Compute dual right now.
1919 
1920   BasicType return_type() const;
1921 


1922 #ifndef PRODUCT
1923   virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
1924 #endif
1925   // Convenience common pre-built types.
1926 };
1927 
1928 //------------------------------accessors--------------------------------------
1929 inline bool Type::is_ptr_to_narrowoop() const {
1930 #ifdef _LP64
1931   return (isa_oopptr() != NULL && is_oopptr()->is_ptr_to_narrowoop_nv());
1932 #else
1933   return false;
1934 #endif
1935 }
1936 
1937 inline bool Type::is_ptr_to_narrowklass() const {
1938 #ifdef _LP64
1939   return (isa_oopptr() != NULL && is_oopptr()->is_ptr_to_narrowklass_nv());
1940 #else
1941   return false;

2157   return (_base == NarrowOop) ? is_narrowoop()->get_ptrtype()->isa_oopptr() : isa_oopptr();
2158 }
2159 
2160 inline const TypeNarrowOop* Type::make_narrowoop() const {
2161   return (_base == NarrowOop) ? is_narrowoop() :
2162                                 (isa_ptr() ? TypeNarrowOop::make(is_ptr()) : NULL);
2163 }
2164 
2165 inline const TypeNarrowKlass* Type::make_narrowklass() const {
2166   return (_base == NarrowKlass) ? is_narrowklass() :
2167                                   (isa_ptr() ? TypeNarrowKlass::make(is_ptr()) : NULL);
2168 }
2169 
2170 inline bool Type::is_floatingpoint() const {
2171   if( (_base == FloatCon)  || (_base == FloatBot) ||
2172       (_base == DoubleCon) || (_base == DoubleBot) )
2173     return true;
2174   return false;
2175 }
2176 








2177 
2178 // ===============================================================
2179 // Things that need to be 64-bits in the 64-bit build but
2180 // 32-bits in the 32-bit build.  Done this way to get full
2181 // optimization AND strong typing.
2182 #ifdef _LP64
2183 
2184 // For type queries and asserts
2185 #define is_intptr_t  is_long
2186 #define isa_intptr_t isa_long
2187 #define find_intptr_t_type find_long_type
2188 #define find_intptr_t_con  find_long_con
2189 #define TypeX        TypeLong
2190 #define Type_X       Type::Long
2191 #define TypeX_X      TypeLong::LONG
2192 #define TypeX_ZERO   TypeLong::ZERO
2193 // For 'ideal_reg' machine registers
2194 #define Op_RegX      Op_RegL
2195 // For phase->intcon variants
2196 #define MakeConX     longcon
2197 #define ConXNode     ConLNode
2198 // For array index arithmetic
2199 #define MulXNode     MulLNode
2200 #define AndXNode     AndLNode
2201 #define OrXNode      OrLNode
2202 #define CmpXNode     CmpLNode

2203 #define SubXNode     SubLNode
2204 #define LShiftXNode  LShiftLNode
2205 // For object size computation:
2206 #define AddXNode     AddLNode
2207 #define RShiftXNode  RShiftLNode
2208 // For card marks and hashcodes
2209 #define URShiftXNode URShiftLNode
2210 // For shenandoahSupport
2211 #define LoadXNode    LoadLNode
2212 #define StoreXNode   StoreLNode
2213 // Opcodes
2214 #define Op_LShiftX   Op_LShiftL
2215 #define Op_AndX      Op_AndL
2216 #define Op_AddX      Op_AddL
2217 #define Op_SubX      Op_SubL
2218 #define Op_XorX      Op_XorL
2219 #define Op_URShiftX  Op_URShiftL
2220 #define Op_LoadX     Op_LoadL

2221 // conversions
2222 #define ConvI2X(x)   ConvI2L(x)
2223 #define ConvL2X(x)   (x)
2224 #define ConvX2I(x)   ConvL2I(x)
2225 #define ConvX2L(x)   (x)
2226 #define ConvX2UL(x)  (x)
2227 
2228 #else
2229 
2230 // For type queries and asserts
2231 #define is_intptr_t  is_int
2232 #define isa_intptr_t isa_int
2233 #define find_intptr_t_type find_int_type
2234 #define find_intptr_t_con  find_int_con
2235 #define TypeX        TypeInt
2236 #define Type_X       Type::Int
2237 #define TypeX_X      TypeInt::INT
2238 #define TypeX_ZERO   TypeInt::ZERO
2239 // For 'ideal_reg' machine registers
2240 #define Op_RegX      Op_RegI
2241 // For phase->intcon variants
2242 #define MakeConX     intcon
2243 #define ConXNode     ConINode
2244 // For array index arithmetic
2245 #define MulXNode     MulINode
2246 #define AndXNode     AndINode
2247 #define OrXNode      OrINode
2248 #define CmpXNode     CmpINode

2249 #define SubXNode     SubINode
2250 #define LShiftXNode  LShiftINode
2251 // For object size computation:
2252 #define AddXNode     AddINode
2253 #define RShiftXNode  RShiftINode
2254 // For card marks and hashcodes
2255 #define URShiftXNode URShiftINode
2256 // For shenandoahSupport
2257 #define LoadXNode    LoadINode
2258 #define StoreXNode   StoreINode
2259 // Opcodes
2260 #define Op_LShiftX   Op_LShiftI
2261 #define Op_AndX      Op_AndI
2262 #define Op_AddX      Op_AddI
2263 #define Op_SubX      Op_SubI
2264 #define Op_XorX      Op_XorI
2265 #define Op_URShiftX  Op_URShiftI
2266 #define Op_LoadX     Op_LoadI

2267 // conversions
2268 #define ConvI2X(x)   (x)
2269 #define ConvL2X(x)   ConvL2I(x)
2270 #define ConvX2I(x)   (x)
2271 #define ConvX2L(x)   ConvI2L(x)
2272 #define ConvX2UL(x)  ConvI2UL(x)
2273 
2274 #endif
2275 
2276 #endif // SHARE_OPTO_TYPE_HPP

   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef SHARE_OPTO_TYPE_HPP
  26 #define SHARE_OPTO_TYPE_HPP
  27 
  28 #include "ci/ciInlineKlass.hpp"
  29 #include "opto/adlcVMDeps.hpp"
  30 #include "runtime/handles.hpp"
  31 #include "runtime/sharedRuntime.hpp"
  32 
  33 // Portions of code courtesy of Clifford Click
  34 
  35 // Optimization - Graph Style
  36 
  37 
  38 // This class defines a Type lattice.  The lattice is used in the constant
  39 // propagation algorithms, and for some type-checking of the iloc code.
  40 // Basic types include RSD's (lower bound, upper bound, stride for integers),
  41 // float & double precision constants, sets of data-labels and code-labels.
  42 // The complete lattice is described below.  Subtypes have no relationship to
  43 // up or down in the lattice; that is entirely determined by the behavior of
  44 // the MEET/JOIN functions.
  45 
  46 class Dict;
  47 class Type;
  48 class   TypeD;
  49 class   TypeF;
  50 class   TypeInteger;
  51 class     TypeInt;

 118     Function,                   // Function signature
 119     Abio,                       // Abstract I/O
 120     Return_Address,             // Subroutine return address
 121     Memory,                     // Abstract store
 122     FloatTop,                   // No float value
 123     FloatCon,                   // Floating point constant
 124     FloatBot,                   // Any float value
 125     DoubleTop,                  // No double value
 126     DoubleCon,                  // Double precision constant
 127     DoubleBot,                  // Any double value
 128     Bottom,                     // Bottom of lattice
 129     lastype                     // Bogus ending type (not in lattice)
 130   };
 131 
 132   // Signal values for offsets from a base pointer
 133   enum OFFSET_SIGNALS {
 134     OffsetTop = -2000000000,    // undefined offset
 135     OffsetBot = -2000000001     // any possible offset
 136   };
 137 
 138   class Offset {
 139   private:
 140     int _offset;
 141 
 142   public:
 143     explicit Offset(int offset) : _offset(offset) {}
 144 
 145     const Offset meet(const Offset other) const;
 146     const Offset dual() const;
 147     const Offset add(intptr_t offset) const;
 148     bool operator==(const Offset& other) const {
 149       return _offset == other._offset;
 150     }
 151     bool operator!=(const Offset& other) const {
 152       return _offset != other._offset;
 153     }
 154     int get() const { return _offset; }
 155 
 156     void dump2(outputStream *st) const;
 157 
 158     static const Offset top;
 159     static const Offset bottom;
 160   };
 161 
 162   // Min and max WIDEN values.
 163   enum WIDEN {
 164     WidenMin = 0,
 165     WidenMax = 3
 166   };
 167 
 168 private:
 169   typedef struct {
 170     TYPES                dual_type;
 171     BasicType            basic_type;
 172     const char*          msg;
 173     bool                 isa_oop;
 174     uint                 ideal_reg;
 175     relocInfo::relocType reloc;
 176   } TypeInfo;
 177 
 178   // Dictionary of types shared among compilations.
 179   static Dict* _shared_type_dict;
 180   static const TypeInfo _type_info[];
 181 

 329   const TypeNarrowKlass *isa_narrowklass() const;// Returns NULL if not oop ptr type
 330   const TypeOopPtr   *isa_oopptr() const;        // Returns NULL if not oop ptr type
 331   const TypeOopPtr   *is_oopptr() const;         // Java-style GC'd pointer
 332   const TypeInstPtr  *isa_instptr() const;       // Returns NULL if not InstPtr
 333   const TypeInstPtr  *is_instptr() const;        // Instance
 334   const TypeAryPtr   *isa_aryptr() const;        // Returns NULL if not AryPtr
 335   const TypeAryPtr   *is_aryptr() const;         // Array oop
 336 
 337   const TypeMetadataPtr   *isa_metadataptr() const;   // Returns NULL if not oop ptr type
 338   const TypeMetadataPtr   *is_metadataptr() const;    // Java-style GC'd pointer
 339   const TypeKlassPtr      *isa_klassptr() const;      // Returns NULL if not KlassPtr
 340   const TypeKlassPtr      *is_klassptr() const;       // assert if not KlassPtr
 341   const TypeInstKlassPtr  *isa_instklassptr() const;  // Returns NULL if not IntKlassPtr
 342   const TypeInstKlassPtr  *is_instklassptr() const;   // assert if not IntKlassPtr
 343   const TypeAryKlassPtr   *isa_aryklassptr() const;   // Returns NULL if not AryKlassPtr
 344   const TypeAryKlassPtr   *is_aryklassptr() const;    // assert if not AryKlassPtr
 345 
 346   virtual bool      is_finite() const;           // Has a finite value
 347   virtual bool      is_nan()    const;           // Is not a number (NaN)
 348 
 349   bool is_inlinetypeptr() const;
 350   virtual ciInlineKlass* inline_klass() const;
 351 
 352   // Returns this ptr type or the equivalent ptr type for this compressed pointer.
 353   const TypePtr* make_ptr() const;
 354 
 355   // Returns this oopptr type or the equivalent oopptr type for this compressed pointer.
 356   // Asserts if the underlying type is not an oopptr or narrowoop.
 357   const TypeOopPtr* make_oopptr() const;
 358 
 359   // Returns this compressed pointer or the equivalent compressed version
 360   // of this pointer type.
 361   const TypeNarrowOop* make_narrowoop() const;
 362 
 363   // Returns this compressed klass pointer or the equivalent
 364   // compressed version of this pointer type.
 365   const TypeNarrowKlass* make_narrowklass() const;
 366 
 367   // Special test for register pressure heuristic
 368   bool is_floatingpoint() const;        // True if Float or Double base type
 369 
 370   // Do you have memory, directly or through a tuple?
 371   bool has_memory( ) const;

 730   const Type ** const _fields;           // Array of field types
 731 
 732 public:
 733   virtual bool eq( const Type *t ) const;
 734   virtual int  hash() const;             // Type specific hashing
 735   virtual bool singleton(void) const;    // TRUE if type is a singleton
 736   virtual bool empty(void) const;        // TRUE if type is vacuous
 737 
 738   // Accessors:
 739   uint cnt() const { return _cnt; }
 740   const Type* field_at(uint i) const {
 741     assert(i < _cnt, "oob");
 742     return _fields[i];
 743   }
 744   void set_field_at(uint i, const Type* t) {
 745     assert(i < _cnt, "oob");
 746     _fields[i] = t;
 747   }
 748 
 749   static const TypeTuple *make( uint cnt, const Type **fields );
 750   static const TypeTuple *make_range(ciSignature* sig, InterfaceHandling interface_handling = ignore_interfaces, bool ret_vt_fields = false);
 751   static const TypeTuple *make_domain(ciMethod* method, InterfaceHandling interface_handling, bool vt_fields_as_args = false);
 752 
 753   // Subroutine call type with space allocated for argument types
 754   // Memory for Control, I_O, Memory, FramePtr, and ReturnAdr is allocated implicitly
 755   static const Type **fields( uint arg_cnt );
 756 
 757   virtual const Type *xmeet( const Type *t ) const;
 758   virtual const Type *xdual() const;    // Compute dual right now.
 759   // Convenience common pre-built types.
 760   static const TypeTuple *IFBOTH;
 761   static const TypeTuple *IFFALSE;
 762   static const TypeTuple *IFTRUE;
 763   static const TypeTuple *IFNEITHER;
 764   static const TypeTuple *LOOPBODY;
 765   static const TypeTuple *MEMBAR;
 766   static const TypeTuple *STORECONDITIONAL;
 767   static const TypeTuple *START_I2C;
 768   static const TypeTuple *INT_PAIR;
 769   static const TypeTuple *LONG_PAIR;
 770   static const TypeTuple *INT_CC_PAIR;
 771   static const TypeTuple *LONG_CC_PAIR;
 772 #ifndef PRODUCT
 773   virtual void dump2( Dict &d, uint, outputStream *st  ) const; // Specialized per-Type dumping
 774 #endif
 775 };
 776 
 777 //------------------------------TypeAry----------------------------------------
 778 // Class of Array Types
 779 class TypeAry : public Type {
 780   TypeAry(const Type* elem, const TypeInt* size, bool stable, bool flat, bool not_flat, bool not_null_free) : Type(Array),
 781       _elem(elem), _size(size), _stable(stable), _flat(flat), _not_flat(not_flat), _not_null_free(not_null_free) {}
 782 public:
 783   virtual bool eq( const Type *t ) const;
 784   virtual int  hash() const;             // Type specific hashing
 785   virtual bool singleton(void) const;    // TRUE if type is a singleton
 786   virtual bool empty(void) const;        // TRUE if type is vacuous
 787 
 788 private:
 789   const Type *_elem;            // Element type of array
 790   const TypeInt *_size;         // Elements in array
 791   const bool _stable;           // Are elements @Stable?
 792 
 793   // Inline type array properties
 794   const bool _flat;             // Array is flattened
 795   const bool _not_flat;         // Array is never flattened
 796   const bool _not_null_free;    // Array is never null-free
 797 
 798   friend class TypeAryPtr;
 799 
 800 public:
 801   static const TypeAry* make(const Type* elem, const TypeInt* size, bool stable = false,
 802                              bool flat = false, bool not_flat = false, bool not_null_free = false);
 803 
 804   virtual const Type *xmeet( const Type *t ) const;
 805   virtual const Type *xdual() const;    // Compute dual right now.
 806   bool ary_must_be_exact() const;  // true if arrays of such are never generic
 807   virtual const TypeAry* remove_speculative() const;
 808   virtual const Type* cleanup_speculative() const;
 809 #ifndef PRODUCT
 810   virtual void dump2( Dict &d, uint, outputStream *st  ) const; // Specialized per-Type dumping
 811 #endif
 812 };
 813 
 814 //------------------------------TypeVect---------------------------------------
 815 // Class of Vector Types
 816 class TypeVect : public Type {
 817   const Type*   _elem;  // Vector's element type
 818   const uint  _length;  // Elements in vector (power of 2)
 819 
 820 protected:
 821   TypeVect(TYPES t, const Type* elem, uint length) : Type(t),
 822     _elem(elem), _length(length) {}

 943     inline void* operator new(size_t x) throw() {
 944       Compile* compile = Compile::current();
 945       return compile->type_arena()->AmallocWords(x);
 946     }
 947     inline void operator delete( void* ptr ) {
 948       ShouldNotReachHere();
 949     }
 950     ciKlass* exact_klass() const;
 951     bool is_loaded() const;
 952 
 953     static int compare(ciKlass* const &, ciKlass* const & k2);
 954 
 955     void compute_is_loaded();
 956   };
 957 
 958   static InterfaceSet interfaces(ciKlass*& k, bool klass, bool interface, bool array, InterfaceHandling interface_handling);
 959 
 960 public:
 961   enum PTR { TopPTR, AnyNull, Constant, Null, NotNull, BotPTR, lastPTR };
 962 protected:
 963   TypePtr(TYPES t, PTR ptr, Offset offset,
 964           const TypePtr* speculative = NULL,
 965           int inline_depth = InlineDepthBottom) :
 966     Type(t), _speculative(speculative), _inline_depth(inline_depth), _offset(offset),
 967     _ptr(ptr) {}
 968   static const PTR ptr_meet[lastPTR][lastPTR];
 969   static const PTR ptr_dual[lastPTR];
 970   static const char * const ptr_msg[lastPTR];
 971 
 972   enum {
 973     InlineDepthBottom = INT_MAX,
 974     InlineDepthTop = -InlineDepthBottom
 975   };
 976 
 977   // Extra type information profiling gave us. We propagate it the
 978   // same way the rest of the type info is propagated. If we want to
 979   // use it, then we have to emit a guard: this part of the type is
 980   // not something we know but something we speculate about the type.
 981   const TypePtr*   _speculative;
 982   // For speculative types, we record at what inlining depth the
 983   // profiling point that provided the data is. We want to favor

 998 
 999   // utility methods to work on the inline depth of the type
1000   int dual_inline_depth() const;
1001   int meet_inline_depth(int depth) const;
1002 #ifndef PRODUCT
1003   void dump_inline_depth(outputStream *st) const;
1004 #endif
1005 
1006   // TypeInstPtr (TypeAryPtr resp.) and TypeInstKlassPtr (TypeAryKlassPtr resp.) implement very similar meet logic.
1007   // The logic for meeting 2 instances (2 arrays resp.) is shared in the 2 utility methods below. However the logic for
1008   // the oop and klass versions can be slightly different and extra logic may have to be executed depending on what
1009   // exact case the meet falls into. The MeetResult struct is used by the utility methods to communicate what case was
1010   // encountered so the right logic specific to klasses or oops can be executed.,
1011   enum MeetResult {
1012     QUICK,
1013     UNLOADED,
1014     SUBTYPE,
1015     NOT_SUBTYPE,
1016     LCA
1017   };
1018   template<class T> static TypePtr::MeetResult meet_instptr(PTR& ptr, InterfaceSet& interfaces, const T* this_type, const T* other_type,
1019                                                             ciKlass*& res_klass, bool& res_xk, bool& res_flatten_array);
1020 
1021   template<class T> static MeetResult meet_aryptr(PTR& ptr, const Type*& elem, const T* this_ary, const T* other_ary,
1022                                                   ciKlass*& res_klass, bool& res_xk, bool &res_flat, bool &res_not_flat, bool &res_not_null_free);
1023 
1024   template <class T1, class T2> static bool is_java_subtype_of_helper_for_instance(const T1* this_one, const T2* other, bool this_exact, bool other_exact);
1025   template <class T1, class T2> static bool is_same_java_type_as_helper_for_instance(const T1* this_one, const T2* other);
1026   template <class T1, class T2> static bool maybe_java_subtype_of_helper_for_instance(const T1* this_one, const T2* other, bool this_exact, bool other_exact);
1027   template <class T1, class T2> static bool is_java_subtype_of_helper_for_array(const T1* this_one, const T2* other, bool this_exact, bool other_exact);
1028   template <class T1, class T2> static bool is_same_java_type_as_helper_for_array(const T1* this_one, const T2* other);
1029   template <class T1, class T2> static bool maybe_java_subtype_of_helper_for_array(const T1* this_one, const T2* other, bool this_exact, bool other_exact);
1030   template <class T1, class T2> static bool is_meet_subtype_of_helper_for_instance(const T1* this_one, const T2* other, bool this_xk, bool other_xk);
1031   template <class T1, class T2> static bool is_meet_subtype_of_helper_for_array(const T1* this_one, const T2* other, bool this_xk, bool other_xk);
1032 public:
1033   const Offset _offset;         // Offset into oop, with TOP & BOT
1034   const PTR _ptr;               // Pointer equivalence class
1035 
1036   const int offset() const { return _offset.get(); }
1037   const PTR ptr()    const { return _ptr; }
1038 
1039   static const TypePtr* make(TYPES t, PTR ptr, Offset offset,
1040                              const TypePtr* speculative = NULL,
1041                              int inline_depth = InlineDepthBottom);
1042 
1043   // Return a 'ptr' version of this type
1044   virtual const TypePtr* cast_to_ptr_type(PTR ptr) const;
1045 
1046   virtual intptr_t get_con() const;
1047 
1048   Type::Offset xadd_offset(intptr_t offset) const;
1049   virtual const TypePtr* add_offset(intptr_t offset) const;
1050   virtual const TypePtr* with_offset(intptr_t offset) const;
1051   virtual const int flattened_offset() const { return offset(); }
1052   virtual bool eq(const Type *t) const;
1053   virtual int  hash() const;             // Type specific hashing
1054 
1055   virtual bool singleton(void) const;    // TRUE if type is a singleton
1056   virtual bool empty(void) const;        // TRUE if type is vacuous
1057   virtual const Type *xmeet( const Type *t ) const;
1058   virtual const Type *xmeet_helper( const Type *t ) const;
1059   Offset meet_offset(int offset) const;
1060   Offset dual_offset() const;
1061   virtual const Type *xdual() const;    // Compute dual right now.
1062 
1063   // meet, dual and join over pointer equivalence sets
1064   PTR meet_ptr( const PTR in_ptr ) const { return ptr_meet[in_ptr][ptr()]; }
1065   PTR dual_ptr()                   const { return ptr_dual[ptr()];      }
1066 
1067   // This is textually confusing unless one recalls that
1068   // join(t) == dual()->meet(t->dual())->dual().
1069   PTR join_ptr( const PTR in_ptr ) const {
1070     return ptr_dual[ ptr_meet[ ptr_dual[in_ptr] ] [ dual_ptr() ] ];
1071   }
1072 
1073   // Speculative type helper methods.
1074   virtual const TypePtr* speculative() const { return _speculative; }
1075   int inline_depth() const                   { return _inline_depth; }
1076   virtual ciKlass* speculative_type() const;
1077   virtual ciKlass* speculative_type_not_null() const;
1078   virtual bool speculative_maybe_null() const;
1079   virtual bool speculative_always_null() const;
1080   virtual const TypePtr* remove_speculative() const;
1081   virtual const Type* cleanup_speculative() const;
1082   virtual bool would_improve_type(ciKlass* exact_kls, int inline_depth) const;
1083   virtual bool would_improve_ptr(ProfilePtrKind maybe_null) const;
1084   virtual const TypePtr* with_inline_depth(int depth) const;
1085 
1086   virtual bool maybe_null() const { return meet_ptr(Null) == ptr(); }
1087 
1088   virtual bool can_be_inline_type() const { return false; }
1089   virtual bool flatten_array()      const { return false; }
1090   virtual bool not_flatten_array()  const { return false; }
1091   virtual bool is_flat()            const { return false; }
1092   virtual bool is_not_flat()        const { return false; }
1093   virtual bool is_null_free()       const { return false; }
1094   virtual bool is_not_null_free()   const { return false; }
1095 
1096   // Tests for relation to centerline of type lattice:
1097   static bool above_centerline(PTR ptr) { return (ptr <= AnyNull); }
1098   static bool below_centerline(PTR ptr) { return (ptr >= NotNull); }
1099   // Convenience common pre-built types.
1100   static const TypePtr *NULL_PTR;
1101   static const TypePtr *NOTNULL;
1102   static const TypePtr *BOTTOM;
1103 #ifndef PRODUCT
1104   virtual void dump2( Dict &d, uint depth, outputStream *st  ) const;
1105 #endif
1106 };
1107 
1108 //------------------------------TypeRawPtr-------------------------------------
1109 // Class of raw pointers, pointers to things other than Oops.  Examples
1110 // include the stack pointer, top of heap, card-marking area, handles, etc.
1111 class TypeRawPtr : public TypePtr {
1112 protected:
1113   TypeRawPtr(PTR ptr, address bits) : TypePtr(RawPtr,ptr,Offset(0)), _bits(bits){}
1114 public:
1115   virtual bool eq( const Type *t ) const;
1116   virtual int  hash() const;     // Type specific hashing
1117 
1118   const address _bits;          // Constant value, if applicable
1119 
1120   static const TypeRawPtr *make( PTR ptr );
1121   static const TypeRawPtr *make( address bits );
1122 
1123   // Return a 'ptr' version of this type
1124   virtual const TypeRawPtr* cast_to_ptr_type(PTR ptr) const;
1125 
1126   virtual intptr_t get_con() const;
1127 
1128   virtual const TypePtr* add_offset(intptr_t offset) const;
1129   virtual const TypeRawPtr* with_offset(intptr_t offset) const { ShouldNotReachHere(); return NULL;}
1130 
1131   virtual const Type *xmeet( const Type *t ) const;
1132   virtual const Type *xdual() const;    // Compute dual right now.
1133   // Convenience common pre-built types.
1134   static const TypeRawPtr *BOTTOM;
1135   static const TypeRawPtr *NOTNULL;
1136 #ifndef PRODUCT
1137   virtual void dump2( Dict &d, uint depth, outputStream *st  ) const;
1138 #endif
1139 };
1140 
1141 //------------------------------TypeOopPtr-------------------------------------
1142 // Some kind of oop (Java pointer), either instance or array.
1143 class TypeOopPtr : public TypePtr {
1144   friend class TypeAry;
1145   friend class TypePtr;
1146   friend class TypeInstPtr;
1147   friend class TypeAryPtr;
1148 protected:
1149   TypeOopPtr(TYPES t, PTR ptr, ciKlass* k, const InterfaceSet& interfaces,bool xk, ciObject* o, Offset offset, Offset field_offset,
1150              int instance_id, const TypePtr* speculative, int inline_depth);
1151 public:
1152   virtual bool eq( const Type *t ) const;
1153   virtual int  hash() const;             // Type specific hashing
1154   virtual bool singleton(void) const;    // TRUE if type is a singleton
1155   enum {
1156    InstanceTop = -1,   // undefined instance
1157    InstanceBot = 0     // any possible instance
1158   };
1159 protected:
1160 
1161   // Oop is NULL, unless this is a constant oop.
1162   ciObject*     _const_oop;   // Constant oop
1163   // If _klass is NULL, then so is _sig.  This is an unloaded klass.
1164   ciKlass*      _klass;       // Klass object
1165 
1166   const InterfaceSet _interfaces;
1167 
1168   // Does the type exclude subclasses of the klass?  (Inexact == polymorphic.)
1169   bool          _klass_is_exact;
1170   bool          _is_ptr_to_narrowoop;
1171   bool          _is_ptr_to_narrowklass;
1172   bool          _is_ptr_to_boxed_value;
1173 
1174   // If not InstanceTop or InstanceBot, indicates that this is
1175   // a particular instance of this type which is distinct.
1176   // This is the node index of the allocation node creating this instance.
1177   int           _instance_id;
1178 
1179   static const TypeOopPtr* make_from_klass_common(ciKlass* klass, bool klass_change, bool try_for_exact, InterfaceHandling interface_handling);
1180 
1181   int dual_instance_id() const;
1182   int meet_instance_id(int uid) const;
1183 
1184   InterfaceSet meet_interfaces(const TypeOopPtr* other) const;
1185 
1186   // Do not allow interface-vs.-noninterface joins to collapse to top.
1187   virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
1188 
1189   virtual ciKlass* exact_klass_helper() const { return NULL; }
1190   virtual ciKlass* klass() const { return _klass; }
1191 
1192 public:
1193 
1194   bool is_java_subtype_of(const TypeOopPtr* other) const {
1195     return is_java_subtype_of_helper(other, klass_is_exact(), other->klass_is_exact());
1196   }
1197 
1198   bool is_same_java_type_as(const TypePtr* other) const {
1199     return is_same_java_type_as_helper(other->is_oopptr());
1200   }
1201 
1202   virtual bool is_same_java_type_as_helper(const TypeOopPtr* other) const {
1203     ShouldNotReachHere(); return false;
1204   }
1205 
1206   bool maybe_java_subtype_of(const TypeOopPtr* other) const {
1207     return maybe_java_subtype_of_helper(other, klass_is_exact(), other->klass_is_exact());
1208   }
1209   virtual bool is_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const { ShouldNotReachHere(); return false; }
1210   virtual bool maybe_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const { ShouldNotReachHere(); return false; }

1217     return make_from_klass_common(klass, true, false, interface_handling);
1218   }
1219   // Same as before, but will produce an exact type, even if
1220   // the klass is not final, as long as it has exactly one implementation.
1221   static const TypeOopPtr* make_from_klass_unique(ciKlass* klass, InterfaceHandling interface_handling= ignore_interfaces) {
1222     return make_from_klass_common(klass, true, true, interface_handling);
1223   }
1224   // Same as before, but does not respects UseUniqueSubclasses.
1225   // Use this only for creating array element types.
1226   static const TypeOopPtr* make_from_klass_raw(ciKlass* klass, InterfaceHandling interface_handling = ignore_interfaces) {
1227     return make_from_klass_common(klass, false, false, interface_handling);
1228   }
1229   // Creates a singleton type given an object.
1230   // If the object cannot be rendered as a constant,
1231   // may return a non-singleton type.
1232   // If require_constant, produce a NULL if a singleton is not possible.
1233   static const TypeOopPtr* make_from_constant(ciObject* o,
1234                                               bool require_constant = false);
1235 
1236   // Make a generic (unclassed) pointer to an oop.
1237   static const TypeOopPtr* make(PTR ptr, Offset offset, int instance_id,
1238                                 const TypePtr* speculative = NULL,
1239                                 int inline_depth = InlineDepthBottom);
1240 
1241   ciObject* const_oop()    const { return _const_oop; }
1242   // Exact klass, possibly an interface or an array of interface
1243   ciKlass* exact_klass(bool maybe_null = false) const { assert(klass_is_exact(), ""); ciKlass* k = exact_klass_helper(); assert(k != NULL || maybe_null, ""); return k;  }
1244   ciKlass* unloaded_klass() const { assert(!is_loaded(), "only for unloaded types"); return klass(); }
1245 
1246   virtual bool  is_loaded() const { return klass()->is_loaded() && _interfaces.is_loaded(); }
1247   virtual bool klass_is_exact()    const { return _klass_is_exact; }
1248 
1249   // Returns true if this pointer points at memory which contains a
1250   // compressed oop references.
1251   bool is_ptr_to_narrowoop_nv() const { return _is_ptr_to_narrowoop; }
1252   bool is_ptr_to_narrowklass_nv() const { return _is_ptr_to_narrowklass; }
1253   bool is_ptr_to_boxed_value()   const { return _is_ptr_to_boxed_value; }
1254   bool is_known_instance()       const { return _instance_id > 0; }
1255   int  instance_id()             const { return _instance_id; }
1256   bool is_known_instance_field() const { return is_known_instance() && _offset.get() >= 0; }
1257 
1258   virtual bool can_be_inline_type() const { return (_klass == NULL || _klass->can_be_inline_klass(_klass_is_exact)); }
1259   virtual bool can_be_inline_array() const { ShouldNotReachHere(); return false; }
1260 
1261   virtual intptr_t get_con() const;
1262 
1263   virtual const TypeOopPtr* cast_to_ptr_type(PTR ptr) const;
1264 
1265   virtual const TypeOopPtr* cast_to_exactness(bool klass_is_exact) const;
1266 
1267   virtual const TypeOopPtr *cast_to_instance_id(int instance_id) const;
1268 
1269   // corresponding pointer to klass, for a given instance
1270   virtual const TypeKlassPtr* as_klass_type(bool try_for_exact = false) const;
1271 
1272   virtual const TypeOopPtr* with_offset(intptr_t offset) const;
1273   virtual const TypePtr* add_offset(intptr_t offset) const;
1274 
1275   // Speculative type helper methods.
1276   virtual const TypeOopPtr* remove_speculative() const;
1277   virtual const Type* cleanup_speculative() const;
1278   virtual bool would_improve_type(ciKlass* exact_kls, int inline_depth) const;
1279   virtual const TypePtr* with_inline_depth(int depth) const;

1302     return _interfaces;
1303   };
1304 
1305   const TypeOopPtr* is_reference_type(const Type* other) const {
1306     return other->isa_oopptr();
1307   }
1308 
1309   const TypeAryPtr* is_array_type(const TypeOopPtr* other) const {
1310     return other->isa_aryptr();
1311   }
1312 
1313   const TypeInstPtr* is_instance_type(const TypeOopPtr* other) const {
1314     return other->isa_instptr();
1315   }
1316 };
1317 
1318 //------------------------------TypeInstPtr------------------------------------
1319 // Class of Java object pointers, pointing either to non-array Java instances
1320 // or to a Klass* (including array klasses).
1321 class TypeInstPtr : public TypeOopPtr {
1322   TypeInstPtr(PTR ptr, ciKlass* k, const InterfaceSet& interfaces, bool xk, ciObject* o, Offset offset,
1323               bool flatten_array, int instance_id, const TypePtr* speculative,
1324               int inline_depth);
1325   virtual bool eq( const Type *t ) const;
1326   virtual int  hash() const;             // Type specific hashing
1327 
1328   bool _flatten_array;     // Type is flat in arrays
1329   ciKlass* exact_klass_helper() const;
1330 
1331 public:
1332 
1333   // Instance klass, ignoring any interface
1334   ciInstanceKlass* instance_klass() const {
1335     assert(!(klass()->is_loaded() && klass()->is_interface()), "");
1336     return klass()->as_instance_klass();
1337   }
1338 
1339   bool is_same_java_type_as_helper(const TypeOopPtr* other) const;
1340   bool is_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const;
1341   bool maybe_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const;
1342 
1343   // Make a pointer to a constant oop.
1344   static const TypeInstPtr *make(ciObject* o) {
1345     ciKlass* k = o->klass();
1346     const TypePtr::InterfaceSet interfaces = TypePtr::interfaces(k, true, false, false, ignore_interfaces);
1347     return make(TypePtr::Constant, k, interfaces, true, o, Offset(0));
1348   }
1349   // Make a pointer to a constant oop with offset.
1350   static const TypeInstPtr *make(ciObject* o, Offset offset) {
1351     ciKlass* k = o->klass();
1352     const TypePtr::InterfaceSet interfaces = TypePtr::interfaces(k, true, false, false, ignore_interfaces);
1353     return make(TypePtr::Constant, k, interfaces, true, o, offset);
1354   }
1355 
1356   // Make a pointer to some value of type klass.
1357   static const TypeInstPtr *make(PTR ptr, ciKlass* klass, InterfaceHandling interface_handling = ignore_interfaces) {
1358     const TypePtr::InterfaceSet interfaces = TypePtr::interfaces(klass, true, true, false, interface_handling);
1359     return make(ptr, klass, interfaces, false, NULL, Offset(0));
1360   }
1361 
1362   // Make a pointer to some non-polymorphic value of exactly type klass.
1363   static const TypeInstPtr *make_exact(PTR ptr, ciKlass* klass) {
1364     const TypePtr::InterfaceSet interfaces = TypePtr::interfaces(klass, true, false, false, ignore_interfaces);
1365     return make(ptr, klass, interfaces, true, NULL, Offset(0));
1366   }
1367 
1368   // Make a pointer to some value of type klass with offset.
1369   static const TypeInstPtr *make(PTR ptr, ciKlass* klass, Offset offset) {
1370     const TypePtr::InterfaceSet interfaces = TypePtr::interfaces(klass, true, false, false, ignore_interfaces);
1371     return make(ptr, klass, interfaces, false, NULL, offset);
1372   }
1373 
1374   // Make a pointer to an oop.
1375   static const TypeInstPtr* make(PTR ptr, ciKlass* k, const InterfaceSet& interfaces, bool xk, ciObject* o, Offset offset,
1376                                  bool flatten_array = false,
1377                                  int instance_id = InstanceBot,
1378                                  const TypePtr* speculative = NULL,
1379                                  int inline_depth = InlineDepthBottom);
1380 
1381   static const TypeInstPtr *make(PTR ptr, ciKlass* k, bool xk, ciObject* o, Offset offset, int instance_id = InstanceBot) {
1382     const TypePtr::InterfaceSet interfaces = TypePtr::interfaces(k, true, false, false, ignore_interfaces);
1383     return make(ptr, k, interfaces, xk, o, offset, false, instance_id);
1384   }
1385 
1386   /** Create constant type for a constant boxed value */
1387   const Type* get_const_boxed_value() const;
1388 
1389   // If this is a java.lang.Class constant, return the type for it or NULL.
1390   // Pass to Type::get_const_type to turn it to a type, which will usually
1391   // be a TypeInstPtr, but may also be a TypeInt::INT for int.class, etc.
1392   ciType* java_mirror_type(bool* is_val_mirror = NULL) const;
1393 
1394   virtual const TypeInstPtr* cast_to_ptr_type(PTR ptr) const;
1395 
1396   virtual const TypeInstPtr* cast_to_exactness(bool klass_is_exact) const;
1397 
1398   virtual const TypeInstPtr* cast_to_instance_id(int instance_id) const;
1399 
1400   virtual const TypePtr* add_offset(intptr_t offset) const;
1401   virtual const TypeInstPtr* with_offset(intptr_t offset) const;
1402 
1403   // Speculative type helper methods.
1404   virtual const TypeInstPtr* remove_speculative() const;
1405   virtual const TypePtr* with_inline_depth(int depth) const;
1406   virtual const TypePtr* with_instance_id(int instance_id) const;
1407 
1408   virtual const TypeInstPtr* cast_to_flatten_array() const;
1409   virtual bool flatten_array() const { return _flatten_array; }
1410   virtual bool not_flatten_array() const { return !can_be_inline_type() || (_klass->is_inlinetype() && !flatten_array()); }
1411 
1412   // the core of the computation of the meet of 2 types
1413   virtual const Type *xmeet_helper(const Type *t) const;
1414   virtual const TypeInstPtr *xmeet_unloaded(const TypeInstPtr *t, const InterfaceSet& interfaces) const;
1415   virtual const Type *xdual() const;    // Compute dual right now.
1416 
1417   const TypeKlassPtr* as_klass_type(bool try_for_exact = false) const;
1418 
1419   virtual bool can_be_inline_array() const;
1420 
1421   // Convenience common pre-built types.
1422   static const TypeInstPtr *NOTNULL;
1423   static const TypeInstPtr *BOTTOM;
1424   static const TypeInstPtr *MIRROR;
1425   static const TypeInstPtr *MARK;
1426   static const TypeInstPtr *KLASS;
1427 #ifndef PRODUCT
1428   virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
1429 #endif
1430 
1431 private:
1432   virtual bool is_meet_subtype_of_helper(const TypeOopPtr* other, bool this_xk, bool other_xk) const;
1433 
1434   virtual bool is_meet_same_type_as(const TypePtr* other) const {
1435     return _klass->equals(other->is_instptr()->_klass) && _interfaces.eq(other->is_instptr()->_interfaces);
1436   }
1437 
1438 };
1439 
1440 //------------------------------TypeAryPtr-------------------------------------
1441 // Class of Java array pointers
1442 class TypeAryPtr : public TypeOopPtr {
1443   friend class Type;
1444   friend class TypePtr;
1445   friend class TypeInstPtr;
1446 
1447   TypeAryPtr(PTR ptr, ciObject* o, const TypeAry *ary, ciKlass* k, bool xk,
1448              Offset offset, Offset field_offset, int instance_id, bool is_autobox_cache,
1449              const TypePtr* speculative, int inline_depth)
1450     : TypeOopPtr(AryPtr, ptr, k, *_array_interfaces, xk, o, offset, field_offset, instance_id, speculative, inline_depth),
1451     _ary(ary),
1452     _is_autobox_cache(is_autobox_cache),
1453     _field_offset(field_offset)
1454  {
1455     int dummy;
1456     bool top_or_bottom = (base_element_type(dummy) == Type::TOP || base_element_type(dummy) == Type::BOTTOM);
1457 
1458     if (UseCompressedOops && (elem()->make_oopptr() != NULL && !top_or_bottom) &&
1459         _offset.get() != 0 && _offset.get() != arrayOopDesc::length_offset_in_bytes() &&
1460         _offset.get() != arrayOopDesc::klass_offset_in_bytes()) {
1461       _is_ptr_to_narrowoop = true;
1462     }
1463 
1464   }
1465   virtual bool eq( const Type *t ) const;
1466   virtual int hash() const;     // Type specific hashing
1467   const TypeAry *_ary;          // Array we point into
1468   const bool     _is_autobox_cache;
1469   // For flattened inline type arrays, each field of the inline type in
1470   // the array has its own memory slice so we need to keep track of
1471   // which field is accessed
1472   const Offset _field_offset;
1473   Offset meet_field_offset(const Type::Offset offset) const;
1474   Offset dual_field_offset() const;
1475 
1476   ciKlass* compute_klass(DEBUG_ONLY(bool verify = false)) const;
1477 
1478   // A pointer to delay allocation to Type::Initialize_shared()
1479 
1480   static const InterfaceSet* _array_interfaces;
1481   ciKlass* exact_klass_helper() const;
1482   // Only guaranteed non null for array of basic types
1483   ciKlass* klass() const;
1484 
1485 public:
1486 
1487   bool is_same_java_type_as_helper(const TypeOopPtr* other) const;
1488   bool is_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const;
1489   bool maybe_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const;
1490 
1491   // returns base element type, an instance klass (and not interface) for object arrays
1492   const Type* base_element_type(int& dims) const;
1493 
1494   // Accessors
1495   bool  is_loaded() const { return (_ary->_elem->make_oopptr() ? _ary->_elem->make_oopptr()->is_loaded() : true); }
1496 
1497   const TypeAry* ary() const  { return _ary; }
1498   const Type*    elem() const { return _ary->_elem; }
1499   const TypeInt* size() const { return _ary->_size; }
1500   bool      is_stable() const { return _ary->_stable; }
1501 
1502   // Inline type array properties
1503   bool is_flat()          const { return _ary->_flat; }
1504   bool is_not_flat()      const { return _ary->_not_flat; }
1505   bool is_null_free()     const { return is_flat() || (_ary->_elem->make_ptr() != NULL && _ary->_elem->make_ptr()->is_inlinetypeptr() && (_ary->_elem->make_ptr()->ptr() == NotNull || _ary->_elem->make_ptr()->ptr() == AnyNull)); }
1506   bool is_not_null_free() const { return _ary->_not_null_free; }
1507 
1508   bool is_autobox_cache() const { return _is_autobox_cache; }
1509 
1510   static const TypeAryPtr* make(PTR ptr, const TypeAry *ary, ciKlass* k, bool xk, Offset offset,
1511                                 Offset field_offset = Offset::bottom,
1512                                 int instance_id = InstanceBot,
1513                                 const TypePtr* speculative = NULL,
1514                                 int inline_depth = InlineDepthBottom);
1515   // Constant pointer to array
1516   static const TypeAryPtr* make(PTR ptr, ciObject* o, const TypeAry *ary, ciKlass* k, bool xk, Offset offset,
1517                                 Offset field_offset = Offset::bottom,
1518                                 int instance_id = InstanceBot,
1519                                 const TypePtr* speculative = NULL,
1520                                 int inline_depth = InlineDepthBottom,
1521                                 bool is_autobox_cache = false);
1522 
1523   // Return a 'ptr' version of this type
1524   virtual const TypeAryPtr* cast_to_ptr_type(PTR ptr) const;
1525 
1526   virtual const TypeAryPtr* cast_to_exactness(bool klass_is_exact) const;
1527 
1528   virtual const TypeAryPtr* cast_to_instance_id(int instance_id) const;
1529 
1530   virtual const TypeAryPtr* cast_to_size(const TypeInt* size) const;
1531   virtual const TypeInt* narrow_size_type(const TypeInt* size) const;
1532 
1533   virtual bool empty(void) const;        // TRUE if type is vacuous
1534   virtual const TypePtr *add_offset( intptr_t offset ) const;
1535   virtual const TypeAryPtr *with_offset( intptr_t offset ) const;
1536   const TypeAryPtr* with_ary(const TypeAry* ary) const;
1537 
1538   // Speculative type helper methods.
1539   virtual const TypeAryPtr* remove_speculative() const;
1540   virtual const Type* cleanup_speculative() const;
1541   virtual const TypePtr* with_inline_depth(int depth) const;
1542   virtual const TypePtr* with_instance_id(int instance_id) const;
1543 
1544   // the core of the computation of the meet of 2 types
1545   virtual const Type *xmeet_helper(const Type *t) const;
1546   virtual const Type *xdual() const;    // Compute dual right now.
1547 
1548   // Inline type array properties
1549   const TypeAryPtr* cast_to_not_flat(bool not_flat = true) const;
1550   const TypeAryPtr* cast_to_not_null_free(bool not_null_free = true) const;
1551   const TypeAryPtr* update_properties(const TypeAryPtr* new_type) const;
1552   jint flat_layout_helper() const;
1553   int flat_elem_size() const;
1554   int flat_log_elem_size() const;
1555 
1556   const TypeAryPtr* cast_to_stable(bool stable, int stable_dimension = 1) const;
1557   int stable_dimension() const;
1558 
1559   const TypeAryPtr* cast_to_autobox_cache() const;
1560 
1561   static jint max_array_length(BasicType etype);
1562 
1563   const int flattened_offset() const;
1564   const Offset field_offset() const { return _field_offset; }
1565   const TypeAryPtr* with_field_offset(int offset) const;
1566   const TypePtr* add_field_offset_and_offset(intptr_t offset) const;
1567 
1568   virtual bool can_be_inline_type() const { return false; }
1569   virtual const TypeKlassPtr* as_klass_type(bool try_for_exact = false) const;
1570 
1571   virtual bool can_be_inline_array() const;
1572 
1573   // Convenience common pre-built types.
1574   static const TypeAryPtr *RANGE;
1575   static const TypeAryPtr *OOPS;
1576   static const TypeAryPtr *NARROWOOPS;
1577   static const TypeAryPtr *BYTES;
1578   static const TypeAryPtr *SHORTS;
1579   static const TypeAryPtr *CHARS;
1580   static const TypeAryPtr *INTS;
1581   static const TypeAryPtr *LONGS;
1582   static const TypeAryPtr *FLOATS;
1583   static const TypeAryPtr *DOUBLES;
1584   static const TypeAryPtr *INLINES;
1585   // selects one of the above:
1586   static const TypeAryPtr *get_array_body_type(BasicType elem) {
1587     assert((uint)elem <= T_CONFLICT && _array_body_type[elem] != NULL, "bad elem type");
1588     return _array_body_type[elem];
1589   }
1590   static const TypeAryPtr *_array_body_type[T_CONFLICT+1];
1591   // sharpen the type of an int which is used as an array size
1592 #ifndef PRODUCT
1593   virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
1594 #endif
1595 private:
1596   virtual bool is_meet_subtype_of_helper(const TypeOopPtr* other, bool this_xk, bool other_xk) const;
1597 };
1598 
1599 //------------------------------TypeMetadataPtr-------------------------------------
1600 // Some kind of metadata, either Method*, MethodData* or CPCacheOop
1601 class TypeMetadataPtr : public TypePtr {
1602 protected:
1603   TypeMetadataPtr(PTR ptr, ciMetadata* metadata, Offset offset);
1604   // Do not allow interface-vs.-noninterface joins to collapse to top.
1605   virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
1606 public:
1607   virtual bool eq( const Type *t ) const;
1608   virtual int  hash() const;             // Type specific hashing
1609   virtual bool singleton(void) const;    // TRUE if type is a singleton
1610 
1611 private:
1612   ciMetadata*   _metadata;
1613 
1614 public:
1615   static const TypeMetadataPtr* make(PTR ptr, ciMetadata* m, Offset offset);
1616 
1617   static const TypeMetadataPtr* make(ciMethod* m);
1618   static const TypeMetadataPtr* make(ciMethodData* m);
1619 
1620   ciMetadata* metadata() const { return _metadata; }
1621 
1622   virtual const TypeMetadataPtr* cast_to_ptr_type(PTR ptr) const;
1623 
1624   virtual const TypePtr *add_offset( intptr_t offset ) const;
1625 
1626   virtual const Type *xmeet( const Type *t ) const;
1627   virtual const Type *xdual() const;    // Compute dual right now.
1628 
1629   virtual intptr_t get_con() const;
1630 
1631   // Convenience common pre-built types.
1632   static const TypeMetadataPtr *BOTTOM;
1633 
1634 #ifndef PRODUCT
1635   virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
1636 #endif
1637 };
1638 
1639 //------------------------------TypeKlassPtr-----------------------------------
1640 // Class of Java Klass pointers
1641 class TypeKlassPtr : public TypePtr {
1642   friend class TypeInstKlassPtr;
1643   friend class TypeAryKlassPtr;
1644   friend class TypePtr;
1645 protected:
1646   TypeKlassPtr(TYPES t, PTR ptr, ciKlass* klass, const InterfaceSet& interfaces, Offset offset);
1647 
1648   virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
1649 
1650 public:
1651   virtual bool eq( const Type *t ) const;
1652   virtual int hash() const;
1653   virtual bool singleton(void) const;    // TRUE if type is a singleton
1654 
1655 protected:
1656 
1657   ciKlass* _klass;
1658   const InterfaceSet _interfaces;
1659   InterfaceSet meet_interfaces(const TypeKlassPtr* other) const;
1660   virtual bool must_be_exact() const { ShouldNotReachHere(); return false; }
1661   virtual ciKlass* exact_klass_helper() const;
1662   virtual ciKlass* klass() const { return  _klass; }
1663 
1664 public:
1665 
1666   bool is_java_subtype_of(const TypeKlassPtr* other) const {
1667     return is_java_subtype_of_helper(other, klass_is_exact(), other->klass_is_exact());
1668   }
1669   bool is_same_java_type_as(const TypePtr* other) const {
1670     return is_same_java_type_as_helper(other->is_klassptr());
1671   }
1672 
1673   bool maybe_java_subtype_of(const TypeKlassPtr* other) const {
1674     return maybe_java_subtype_of_helper(other, klass_is_exact(), other->klass_is_exact());
1675   }
1676   virtual bool is_same_java_type_as_helper(const TypeKlassPtr* other) const { ShouldNotReachHere(); return false; }
1677   virtual bool is_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const { ShouldNotReachHere(); return false; }
1678   virtual bool maybe_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const { ShouldNotReachHere(); return false; }
1679 
1680   // Exact klass, possibly an interface or an array of interface
1681   ciKlass* exact_klass(bool maybe_null = false) const { assert(klass_is_exact(), ""); ciKlass* k = exact_klass_helper(); assert(k != NULL || maybe_null, ""); return k;  }
1682   virtual bool klass_is_exact()    const { return _ptr == Constant; }
1683 
1684   static const TypeKlassPtr* make(ciKlass* klass, InterfaceHandling interface_handling = ignore_interfaces);
1685   static const TypeKlassPtr *make(PTR ptr, ciKlass* klass, Offset offset, InterfaceHandling interface_handling = ignore_interfaces);
1686 
1687   virtual bool  is_loaded() const { return _klass->is_loaded(); }
1688 
1689   virtual const TypeKlassPtr* cast_to_ptr_type(PTR ptr) const { ShouldNotReachHere(); return NULL; }
1690 
1691   virtual const TypeKlassPtr *cast_to_exactness(bool klass_is_exact) const { ShouldNotReachHere(); return NULL; }
1692 
1693   // corresponding pointer to instance, for a given class
1694   virtual const TypeOopPtr* as_instance_type(bool klass_change = true) const { ShouldNotReachHere(); return NULL; }
1695 
1696   virtual const TypePtr *add_offset( intptr_t offset ) const { ShouldNotReachHere(); return NULL; }
1697   virtual const Type    *xmeet( const Type *t ) const { ShouldNotReachHere(); return NULL; }
1698   virtual const Type    *xdual() const { ShouldNotReachHere(); return NULL; }
1699 
1700   virtual intptr_t get_con() const;
1701 
1702   virtual const TypeKlassPtr* with_offset(intptr_t offset) const { ShouldNotReachHere(); return NULL; }
1703 
1704   virtual bool can_be_inline_array() const { ShouldNotReachHere(); return false; }
1705   virtual const TypeKlassPtr* try_improve() const { return this; }
1706 
1707 #ifndef PRODUCT
1708   virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
1709 #endif
1710 private:
1711   virtual bool is_meet_subtype_of(const TypePtr* other) const {
1712     return is_meet_subtype_of_helper(other->is_klassptr(), klass_is_exact(), other->is_klassptr()->klass_is_exact());
1713   }
1714 
1715   virtual bool is_meet_subtype_of_helper(const TypeKlassPtr* other, bool this_xk, bool other_xk) const {
1716     ShouldNotReachHere(); return false;
1717   }
1718 
1719   virtual const InterfaceSet interfaces() const {
1720     return _interfaces;
1721   };
1722 
1723   const TypeKlassPtr* is_reference_type(const Type* other) const {
1724     return other->isa_klassptr();
1725   }
1726 
1727   const TypeAryKlassPtr* is_array_type(const TypeKlassPtr* other) const {
1728     return other->isa_aryklassptr();
1729   }
1730 
1731   const TypeInstKlassPtr* is_instance_type(const TypeKlassPtr* other) const {
1732     return other->isa_instklassptr();
1733   }
1734 };
1735 
1736 // Instance klass pointer, mirrors TypeInstPtr
1737 class TypeInstKlassPtr : public TypeKlassPtr {
1738 
1739   TypeInstKlassPtr(PTR ptr, ciKlass* klass, const InterfaceSet& interfaces, Offset offset, bool flatten_array)
1740     : TypeKlassPtr(InstKlassPtr, ptr, klass, interfaces, offset), _flatten_array(flatten_array) {
1741     assert(klass->is_instance_klass() && (!klass->is_loaded() || !klass->is_interface()), "");
1742   }
1743 
1744   virtual bool must_be_exact() const;
1745 
1746   const bool _flatten_array; // Type is flat in arrays
1747 
1748 public:
1749   // Instance klass ignoring any interface
1750   ciInstanceKlass* instance_klass() const {
1751     assert(!klass()->is_interface(), "");
1752     return klass()->as_instance_klass();
1753   }
1754 
1755   bool is_same_java_type_as_helper(const TypeKlassPtr* other) const;
1756   bool is_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const;
1757   bool maybe_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const;
1758 
1759   virtual bool can_be_inline_type() const { return (_klass == NULL || _klass->can_be_inline_klass(klass_is_exact())); }
1760 
1761   static const TypeInstKlassPtr *make(ciKlass* k, InterfaceHandling interface_handling) {
1762     InterfaceSet interfaces = TypePtr::interfaces(k, true, true, false, interface_handling);
1763     return make(TypePtr::Constant, k, interfaces, Offset(0));
1764   }
1765   static const TypeInstKlassPtr* make(PTR ptr, ciKlass* k, const InterfaceSet& interfaces, Offset offset, bool flatten_array = false);
1766 
1767   static const TypeInstKlassPtr* make(PTR ptr, ciKlass* k, Offset offset) {
1768     const TypePtr::InterfaceSet interfaces = TypePtr::interfaces(k, true, false, false, ignore_interfaces);
1769     return make(ptr, k, interfaces, offset);
1770   }
1771 
1772   virtual const TypeInstKlassPtr* cast_to_ptr_type(PTR ptr) const;
1773 
1774   virtual const TypeKlassPtr *cast_to_exactness(bool klass_is_exact) const;
1775 
1776   // corresponding pointer to instance, for a given class
1777   virtual const TypeOopPtr* as_instance_type(bool klass_change = true) const;
1778   virtual int hash() const;
1779   virtual bool eq(const Type *t) const;
1780 
1781   virtual const TypePtr *add_offset( intptr_t offset ) const;
1782   virtual const Type    *xmeet( const Type *t ) const;
1783   virtual const Type    *xdual() const;
1784   virtual const TypeInstKlassPtr* with_offset(intptr_t offset) const;
1785 
1786   virtual const TypeKlassPtr* try_improve() const;
1787 
1788   virtual bool flatten_array() const { return _flatten_array; }
1789   virtual bool not_flatten_array() const { return !_klass->can_be_inline_klass() || (_klass->is_inlinetype() && !flatten_array()); }
1790 
1791   virtual bool can_be_inline_array() const;
1792 
1793   // Convenience common pre-built types.
1794   static const TypeInstKlassPtr* OBJECT; // Not-null object klass or below
1795   static const TypeInstKlassPtr* OBJECT_OR_NULL; // Maybe-null version of same
1796 private:
1797   virtual bool is_meet_subtype_of_helper(const TypeKlassPtr* other, bool this_xk, bool other_xk) const;
1798 };
1799 
1800 // Array klass pointer, mirrors TypeAryPtr
1801 class TypeAryKlassPtr : public TypeKlassPtr {
1802   friend class TypeInstKlassPtr;
1803   friend class Type;
1804   friend class TypePtr;
1805 
1806   const Type *_elem;
1807   const bool _not_flat;      // Array is never flattened
1808   const bool _not_null_free; // Array is never null-free
1809   const bool _null_free;
1810 
1811   static const InterfaceSet* _array_interfaces;
1812   TypeAryKlassPtr(PTR ptr, const Type *elem, ciKlass* klass, Offset offset, bool not_flat, int not_null_free, bool null_free)
1813     : TypeKlassPtr(AryKlassPtr, ptr, klass, *_array_interfaces, offset), _elem(elem), _not_flat(not_flat), _not_null_free(not_null_free), _null_free(null_free) {
1814     assert(klass == NULL || klass->is_type_array_klass() || klass->is_flat_array_klass() || !klass->as_obj_array_klass()->base_element_klass()->is_interface(), "");
1815   }
1816 
1817   virtual ciKlass* exact_klass_helper() const;
1818   // Only guaranteed non null for array of basic types
1819   virtual ciKlass* klass() const;
1820 
1821   virtual bool must_be_exact() const;
1822 
1823   bool dual_null_free() const {
1824     return _null_free;
1825   }
1826 
1827   bool meet_null_free(bool other) const {
1828     return _null_free && other;
1829   }
1830 
1831 public:
1832 
1833   // returns base element type, an instance klass (and not interface) for object arrays
1834   const Type* base_element_type(int& dims) const;
1835 
1836   static const TypeAryKlassPtr* make(PTR ptr, ciKlass* k, Offset offset, InterfaceHandling interface_handling, bool not_flat, bool not_null_free, bool null_free);
1837 
1838   bool is_same_java_type_as_helper(const TypeKlassPtr* other) const;
1839   bool is_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const;
1840   bool maybe_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const;
1841 
1842   bool  is_loaded() const { return (_elem->isa_klassptr() ? _elem->is_klassptr()->is_loaded() : true); }
1843 
1844   static const TypeAryKlassPtr* make(PTR ptr, const Type* elem, ciKlass* k, Offset offset, bool not_flat, bool not_null_free, bool null_free);
1845   static const TypeAryKlassPtr* make(PTR ptr, ciKlass* k, Offset offset, InterfaceHandling interface_handling);
1846   static const TypeAryKlassPtr* make(ciKlass* klass, InterfaceHandling interface_handling);
1847 
1848   const Type *elem() const { return _elem; }
1849 
1850   virtual bool eq(const Type *t) const;
1851   virtual int hash() const;             // Type specific hashing
1852 
1853   virtual const TypeAryKlassPtr* cast_to_ptr_type(PTR ptr) const;
1854 
1855   virtual const TypeKlassPtr *cast_to_exactness(bool klass_is_exact) const;
1856 
1857   // corresponding pointer to instance, for a given class
1858   virtual const TypeOopPtr* as_instance_type(bool klass_change = true) const;
1859 
1860   virtual const TypePtr *add_offset( intptr_t offset ) const;
1861   virtual const Type    *xmeet( const Type *t ) const;
1862   virtual const Type    *xdual() const;      // Compute dual right now.
1863 
1864   virtual const TypeAryKlassPtr* with_offset(intptr_t offset) const;
1865 
1866   virtual bool empty(void) const {
1867     return TypeKlassPtr::empty() || _elem->empty();
1868   }
1869 
1870   bool is_flat()          const { return klass() != NULL && klass()->is_flat_array_klass(); }
1871   bool is_not_flat()      const { return _not_flat; }
1872   bool is_null_free()     const { return _null_free; }
1873   bool is_not_null_free() const { return _not_null_free; }
1874   virtual bool can_be_inline_array() const;
1875 
1876 #ifndef PRODUCT
1877   virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
1878 #endif
1879 private:
1880   virtual bool is_meet_subtype_of_helper(const TypeKlassPtr* other, bool this_xk, bool other_xk) const;
1881 };
1882 
1883 class TypeNarrowPtr : public Type {
1884 protected:
1885   const TypePtr* _ptrtype; // Could be TypePtr::NULL_PTR
1886 
1887   TypeNarrowPtr(TYPES t, const TypePtr* ptrtype): Type(t),
1888                                                   _ptrtype(ptrtype) {
1889     assert(ptrtype->offset() == 0 ||
1890            ptrtype->offset() == OffsetBot ||
1891            ptrtype->offset() == OffsetTop, "no real offsets");
1892   }
1893 
1894   virtual const TypeNarrowPtr *isa_same_narrowptr(const Type *t) const = 0;
1895   virtual const TypeNarrowPtr *is_same_narrowptr(const Type *t) const = 0;

1991   }
1992 
1993   virtual const TypeNarrowPtr *make_hash_same_narrowptr(const TypePtr *t) const {
1994     return (const TypeNarrowPtr*)((new TypeNarrowKlass(t))->hashcons());
1995   }
1996 
1997 public:
1998   static const TypeNarrowKlass *make( const TypePtr* type);
1999 
2000   // static const TypeNarrowKlass *BOTTOM;
2001   static const TypeNarrowKlass *NULL_PTR;
2002 
2003 #ifndef PRODUCT
2004   virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
2005 #endif
2006 };
2007 
2008 //------------------------------TypeFunc---------------------------------------
2009 // Class of Array Types
2010 class TypeFunc : public Type {
2011   TypeFunc(const TypeTuple *domain_sig, const TypeTuple *domain_cc, const TypeTuple *range_sig, const TypeTuple *range_cc)
2012     : Type(Function), _domain_sig(domain_sig), _domain_cc(domain_cc), _range_sig(range_sig), _range_cc(range_cc) {}
2013   virtual bool eq( const Type *t ) const;
2014   virtual int  hash() const;             // Type specific hashing
2015   virtual bool singleton(void) const;    // TRUE if type is a singleton
2016   virtual bool empty(void) const;        // TRUE if type is vacuous
2017 
2018   // Domains of inputs: inline type arguments are not passed by
2019   // reference, instead each field of the inline type is passed as an
2020   // argument. We maintain 2 views of the argument list here: one
2021   // based on the signature (with an inline type argument as a single
2022   // slot), one based on the actual calling convention (with a value
2023   // type argument as a list of its fields).
2024   const TypeTuple* const _domain_sig;
2025   const TypeTuple* const _domain_cc;
2026   // Range of results. Similar to domains: an inline type result can be
2027   // returned in registers in which case range_cc lists all fields and
2028   // is the actual calling convention.
2029   const TypeTuple* const _range_sig;
2030   const TypeTuple* const _range_cc;
2031 
2032 public:
2033   // Constants are shared among ADLC and VM
2034   enum { Control    = AdlcVMDeps::Control,
2035          I_O        = AdlcVMDeps::I_O,
2036          Memory     = AdlcVMDeps::Memory,
2037          FramePtr   = AdlcVMDeps::FramePtr,
2038          ReturnAdr  = AdlcVMDeps::ReturnAdr,
2039          Parms      = AdlcVMDeps::Parms
2040   };
2041 
2042 
2043   // Accessors:
2044   const TypeTuple* domain_sig() const { return _domain_sig; }
2045   const TypeTuple* domain_cc()  const { return _domain_cc; }
2046   const TypeTuple* range_sig()  const { return _range_sig; }
2047   const TypeTuple* range_cc()   const { return _range_cc; }
2048 
2049   static const TypeFunc* make(ciMethod* method, bool is_osr_compilation = false);
2050   static const TypeFunc *make(const TypeTuple* domain_sig, const TypeTuple* domain_cc,
2051                               const TypeTuple* range_sig, const TypeTuple* range_cc);
2052   static const TypeFunc *make(const TypeTuple* domain, const TypeTuple* range);
2053 
2054   virtual const Type *xmeet( const Type *t ) const;
2055   virtual const Type *xdual() const;    // Compute dual right now.
2056 
2057   BasicType return_type() const;
2058 
2059   bool returns_inline_type_as_fields() const { return range_sig() != range_cc(); }
2060 
2061 #ifndef PRODUCT
2062   virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
2063 #endif
2064   // Convenience common pre-built types.
2065 };
2066 
2067 //------------------------------accessors--------------------------------------
2068 inline bool Type::is_ptr_to_narrowoop() const {
2069 #ifdef _LP64
2070   return (isa_oopptr() != NULL && is_oopptr()->is_ptr_to_narrowoop_nv());
2071 #else
2072   return false;
2073 #endif
2074 }
2075 
2076 inline bool Type::is_ptr_to_narrowklass() const {
2077 #ifdef _LP64
2078   return (isa_oopptr() != NULL && is_oopptr()->is_ptr_to_narrowklass_nv());
2079 #else
2080   return false;

2296   return (_base == NarrowOop) ? is_narrowoop()->get_ptrtype()->isa_oopptr() : isa_oopptr();
2297 }
2298 
2299 inline const TypeNarrowOop* Type::make_narrowoop() const {
2300   return (_base == NarrowOop) ? is_narrowoop() :
2301                                 (isa_ptr() ? TypeNarrowOop::make(is_ptr()) : NULL);
2302 }
2303 
2304 inline const TypeNarrowKlass* Type::make_narrowklass() const {
2305   return (_base == NarrowKlass) ? is_narrowklass() :
2306                                   (isa_ptr() ? TypeNarrowKlass::make(is_ptr()) : NULL);
2307 }
2308 
2309 inline bool Type::is_floatingpoint() const {
2310   if( (_base == FloatCon)  || (_base == FloatBot) ||
2311       (_base == DoubleCon) || (_base == DoubleBot) )
2312     return true;
2313   return false;
2314 }
2315 
2316 inline bool Type::is_inlinetypeptr() const {
2317   return isa_instptr() != NULL && is_instptr()->instance_klass()->is_inlinetype();
2318 }
2319 
2320 inline ciInlineKlass* Type::inline_klass() const {
2321   return make_ptr()->is_instptr()->instance_klass()->as_inline_klass();
2322 }
2323 
2324 
2325 // ===============================================================
2326 // Things that need to be 64-bits in the 64-bit build but
2327 // 32-bits in the 32-bit build.  Done this way to get full
2328 // optimization AND strong typing.
2329 #ifdef _LP64
2330 
2331 // For type queries and asserts
2332 #define is_intptr_t  is_long
2333 #define isa_intptr_t isa_long
2334 #define find_intptr_t_type find_long_type
2335 #define find_intptr_t_con  find_long_con
2336 #define TypeX        TypeLong
2337 #define Type_X       Type::Long
2338 #define TypeX_X      TypeLong::LONG
2339 #define TypeX_ZERO   TypeLong::ZERO
2340 // For 'ideal_reg' machine registers
2341 #define Op_RegX      Op_RegL
2342 // For phase->intcon variants
2343 #define MakeConX     longcon
2344 #define ConXNode     ConLNode
2345 // For array index arithmetic
2346 #define MulXNode     MulLNode
2347 #define AndXNode     AndLNode
2348 #define OrXNode      OrLNode
2349 #define CmpXNode     CmpLNode
2350 #define CmpUXNode    CmpULNode
2351 #define SubXNode     SubLNode
2352 #define LShiftXNode  LShiftLNode
2353 // For object size computation:
2354 #define AddXNode     AddLNode
2355 #define RShiftXNode  RShiftLNode
2356 // For card marks and hashcodes
2357 #define URShiftXNode URShiftLNode
2358 // For shenandoahSupport
2359 #define LoadXNode    LoadLNode
2360 #define StoreXNode   StoreLNode
2361 // Opcodes
2362 #define Op_LShiftX   Op_LShiftL
2363 #define Op_AndX      Op_AndL
2364 #define Op_AddX      Op_AddL
2365 #define Op_SubX      Op_SubL
2366 #define Op_XorX      Op_XorL
2367 #define Op_URShiftX  Op_URShiftL
2368 #define Op_LoadX     Op_LoadL
2369 #define Op_StoreX    Op_StoreL
2370 // conversions
2371 #define ConvI2X(x)   ConvI2L(x)
2372 #define ConvL2X(x)   (x)
2373 #define ConvX2I(x)   ConvL2I(x)
2374 #define ConvX2L(x)   (x)
2375 #define ConvX2UL(x)  (x)
2376 
2377 #else
2378 
2379 // For type queries and asserts
2380 #define is_intptr_t  is_int
2381 #define isa_intptr_t isa_int
2382 #define find_intptr_t_type find_int_type
2383 #define find_intptr_t_con  find_int_con
2384 #define TypeX        TypeInt
2385 #define Type_X       Type::Int
2386 #define TypeX_X      TypeInt::INT
2387 #define TypeX_ZERO   TypeInt::ZERO
2388 // For 'ideal_reg' machine registers
2389 #define Op_RegX      Op_RegI
2390 // For phase->intcon variants
2391 #define MakeConX     intcon
2392 #define ConXNode     ConINode
2393 // For array index arithmetic
2394 #define MulXNode     MulINode
2395 #define AndXNode     AndINode
2396 #define OrXNode      OrINode
2397 #define CmpXNode     CmpINode
2398 #define CmpUXNode    CmpUNode
2399 #define SubXNode     SubINode
2400 #define LShiftXNode  LShiftINode
2401 // For object size computation:
2402 #define AddXNode     AddINode
2403 #define RShiftXNode  RShiftINode
2404 // For card marks and hashcodes
2405 #define URShiftXNode URShiftINode
2406 // For shenandoahSupport
2407 #define LoadXNode    LoadINode
2408 #define StoreXNode   StoreINode
2409 // Opcodes
2410 #define Op_LShiftX   Op_LShiftI
2411 #define Op_AndX      Op_AndI
2412 #define Op_AddX      Op_AddI
2413 #define Op_SubX      Op_SubI
2414 #define Op_XorX      Op_XorI
2415 #define Op_URShiftX  Op_URShiftI
2416 #define Op_LoadX     Op_LoadI
2417 #define Op_StoreX    Op_StoreI
2418 // conversions
2419 #define ConvI2X(x)   (x)
2420 #define ConvL2X(x)   ConvL2I(x)
2421 #define ConvX2I(x)   (x)
2422 #define ConvX2L(x)   ConvI2L(x)
2423 #define ConvX2UL(x)  ConvI2UL(x)
2424 
2425 #endif
2426 
2427 #endif // SHARE_OPTO_TYPE_HPP
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