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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;

 119     Function,                   // Function signature
 120     Abio,                       // Abstract I/O
 121     Return_Address,             // Subroutine return address
 122     Memory,                     // Abstract store
 123     FloatTop,                   // No float value
 124     FloatCon,                   // Floating point constant
 125     FloatBot,                   // Any float value
 126     DoubleTop,                  // No double value
 127     DoubleCon,                  // Double precision constant
 128     DoubleBot,                  // Any double value
 129     Bottom,                     // Bottom of lattice
 130     lastype                     // Bogus ending type (not in lattice)
 131   };
 132 
 133   // Signal values for offsets from a base pointer
 134   enum OFFSET_SIGNALS {
 135     OffsetTop = -2000000000,    // undefined offset
 136     OffsetBot = -2000000001     // any possible offset
 137   };
 138 
























 139   // Min and max WIDEN values.
 140   enum WIDEN {
 141     WidenMin = 0,
 142     WidenMax = 3
 143   };
 144 
 145 private:
 146   typedef struct {
 147     TYPES                dual_type;
 148     BasicType            basic_type;
 149     const char*          msg;
 150     bool                 isa_oop;
 151     uint                 ideal_reg;
 152     relocInfo::relocType reloc;
 153   } TypeInfo;
 154 
 155   // Dictionary of types shared among compilations.
 156   static Dict* _shared_type_dict;
 157   static const TypeInfo _type_info[];
 158 

 309   const TypeNarrowKlass *isa_narrowklass() const;// Returns null if not oop ptr type
 310   const TypeOopPtr   *isa_oopptr() const;        // Returns null if not oop ptr type
 311   const TypeOopPtr   *is_oopptr() const;         // Java-style GC'd pointer
 312   const TypeInstPtr  *isa_instptr() const;       // Returns null if not InstPtr
 313   const TypeInstPtr  *is_instptr() const;        // Instance
 314   const TypeAryPtr   *isa_aryptr() const;        // Returns null if not AryPtr
 315   const TypeAryPtr   *is_aryptr() const;         // Array oop
 316 
 317   const TypeMetadataPtr   *isa_metadataptr() const;   // Returns null if not oop ptr type
 318   const TypeMetadataPtr   *is_metadataptr() const;    // Java-style GC'd pointer
 319   const TypeKlassPtr      *isa_klassptr() const;      // Returns null if not KlassPtr
 320   const TypeKlassPtr      *is_klassptr() const;       // assert if not KlassPtr
 321   const TypeInstKlassPtr  *isa_instklassptr() const;  // Returns null if not IntKlassPtr
 322   const TypeInstKlassPtr  *is_instklassptr() const;   // assert if not IntKlassPtr
 323   const TypeAryKlassPtr   *isa_aryklassptr() const;   // Returns null if not AryKlassPtr
 324   const TypeAryKlassPtr   *is_aryklassptr() const;    // assert if not AryKlassPtr
 325 
 326   virtual bool      is_finite() const;           // Has a finite value
 327   virtual bool      is_nan()    const;           // Is not a number (NaN)
 328 



 329   // Returns this ptr type or the equivalent ptr type for this compressed pointer.
 330   const TypePtr* make_ptr() const;
 331 
 332   // Returns this oopptr type or the equivalent oopptr type for this compressed pointer.
 333   // Asserts if the underlying type is not an oopptr or narrowoop.
 334   const TypeOopPtr* make_oopptr() const;
 335 
 336   // Returns this compressed pointer or the equivalent compressed version
 337   // of this pointer type.
 338   const TypeNarrowOop* make_narrowoop() const;
 339 
 340   // Returns this compressed klass pointer or the equivalent
 341   // compressed version of this pointer type.
 342   const TypeNarrowKlass* make_narrowklass() const;
 343 
 344   // Special test for register pressure heuristic
 345   bool is_floatingpoint() const;        // True if Float or Double base type
 346 
 347   // Do you have memory, directly or through a tuple?
 348   bool has_memory( ) const;

 707   const Type ** const _fields;           // Array of field types
 708 
 709 public:
 710   virtual bool eq( const Type *t ) const;
 711   virtual uint hash() const;             // Type specific hashing
 712   virtual bool singleton(void) const;    // TRUE if type is a singleton
 713   virtual bool empty(void) const;        // TRUE if type is vacuous
 714 
 715   // Accessors:
 716   uint cnt() const { return _cnt; }
 717   const Type* field_at(uint i) const {
 718     assert(i < _cnt, "oob");
 719     return _fields[i];
 720   }
 721   void set_field_at(uint i, const Type* t) {
 722     assert(i < _cnt, "oob");
 723     _fields[i] = t;
 724   }
 725 
 726   static const TypeTuple *make( uint cnt, const Type **fields );
 727   static const TypeTuple *make_range(ciSignature *sig, InterfaceHandling interface_handling = ignore_interfaces);
 728   static const TypeTuple *make_domain(ciInstanceKlass* recv, ciSignature *sig, InterfaceHandling interface_handling);
 729 
 730   // Subroutine call type with space allocated for argument types
 731   // Memory for Control, I_O, Memory, FramePtr, and ReturnAdr is allocated implicitly
 732   static const Type **fields( uint arg_cnt );
 733 
 734   virtual const Type *xmeet( const Type *t ) const;
 735   virtual const Type *xdual() const;    // Compute dual right now.
 736   // Convenience common pre-built types.
 737   static const TypeTuple *IFBOTH;
 738   static const TypeTuple *IFFALSE;
 739   static const TypeTuple *IFTRUE;
 740   static const TypeTuple *IFNEITHER;
 741   static const TypeTuple *LOOPBODY;
 742   static const TypeTuple *MEMBAR;
 743   static const TypeTuple *STORECONDITIONAL;
 744   static const TypeTuple *START_I2C;
 745   static const TypeTuple *INT_PAIR;
 746   static const TypeTuple *LONG_PAIR;
 747   static const TypeTuple *INT_CC_PAIR;
 748   static const TypeTuple *LONG_CC_PAIR;
 749 #ifndef PRODUCT
 750   virtual void dump2( Dict &d, uint, outputStream *st  ) const; // Specialized per-Type dumping
 751 #endif
 752 };
 753 
 754 //------------------------------TypeAry----------------------------------------
 755 // Class of Array Types
 756 class TypeAry : public Type {
 757   TypeAry(const Type* elem, const TypeInt* size, bool stable) : Type(Array),
 758       _elem(elem), _size(size), _stable(stable) {}
 759 public:
 760   virtual bool eq( const Type *t ) const;
 761   virtual uint hash() const;             // Type specific hashing
 762   virtual bool singleton(void) const;    // TRUE if type is a singleton
 763   virtual bool empty(void) const;        // TRUE if type is vacuous
 764 
 765 private:
 766   const Type *_elem;            // Element type of array
 767   const TypeInt *_size;         // Elements in array
 768   const bool _stable;           // Are elements @Stable?






 769   friend class TypeAryPtr;
 770 
 771 public:
 772   static const TypeAry* make(const Type* elem, const TypeInt* size, bool stable = false);

 773 
 774   virtual const Type *xmeet( const Type *t ) const;
 775   virtual const Type *xdual() const;    // Compute dual right now.
 776   bool ary_must_be_exact() const;  // true if arrays of such are never generic
 777   virtual const TypeAry* remove_speculative() const;
 778   virtual const Type* cleanup_speculative() const;
 779 #ifndef PRODUCT
 780   virtual void dump2( Dict &d, uint, outputStream *st  ) const; // Specialized per-Type dumping
 781 #endif
 782 };
 783 
 784 //------------------------------TypeVect---------------------------------------
 785 // Class of Vector Types
 786 class TypeVect : public Type {
 787   const Type*   _elem;  // Vector's element type
 788   const uint  _length;  // Elements in vector (power of 2)
 789 
 790 protected:
 791   TypeVect(TYPES t, const Type* elem, uint length) : Type(t),
 792     _elem(elem), _length(length) {}

 913 
 914   const Type* xmeet(const Type* t) const;
 915 
 916   bool singleton(void) const;
 917 };
 918 
 919 //------------------------------TypePtr----------------------------------------
 920 // Class of machine Pointer Types: raw data, instances or arrays.
 921 // If the _base enum is AnyPtr, then this refers to all of the above.
 922 // Otherwise the _base will indicate which subset of pointers is affected,
 923 // and the class will be inherited from.
 924 class TypePtr : public Type {
 925   friend class TypeNarrowPtr;
 926   friend class Type;
 927 protected:
 928   static const TypeInterfaces* interfaces(ciKlass*& k, bool klass, bool interface, bool array, InterfaceHandling interface_handling);
 929 
 930 public:
 931   enum PTR { TopPTR, AnyNull, Constant, Null, NotNull, BotPTR, lastPTR };
 932 protected:
 933   TypePtr(TYPES t, PTR ptr, int offset,
 934           const TypePtr* speculative = nullptr,
 935           int inline_depth = InlineDepthBottom) :
 936     Type(t), _speculative(speculative), _inline_depth(inline_depth), _offset(offset),
 937     _ptr(ptr) {}
 938   static const PTR ptr_meet[lastPTR][lastPTR];
 939   static const PTR ptr_dual[lastPTR];
 940   static const char * const ptr_msg[lastPTR];
 941 
 942   enum {
 943     InlineDepthBottom = INT_MAX,
 944     InlineDepthTop = -InlineDepthBottom
 945   };
 946 
 947   // Extra type information profiling gave us. We propagate it the
 948   // same way the rest of the type info is propagated. If we want to
 949   // use it, then we have to emit a guard: this part of the type is
 950   // not something we know but something we speculate about the type.
 951   const TypePtr*   _speculative;
 952   // For speculative types, we record at what inlining depth the
 953   // profiling point that provided the data is. We want to favor

 969   // utility methods to work on the inline depth of the type
 970   int dual_inline_depth() const;
 971   int meet_inline_depth(int depth) const;
 972 #ifndef PRODUCT
 973   void dump_inline_depth(outputStream *st) const;
 974 #endif
 975 
 976   // TypeInstPtr (TypeAryPtr resp.) and TypeInstKlassPtr (TypeAryKlassPtr resp.) implement very similar meet logic.
 977   // The logic for meeting 2 instances (2 arrays resp.) is shared in the 2 utility methods below. However the logic for
 978   // the oop and klass versions can be slightly different and extra logic may have to be executed depending on what
 979   // exact case the meet falls into. The MeetResult struct is used by the utility methods to communicate what case was
 980   // encountered so the right logic specific to klasses or oops can be executed.,
 981   enum MeetResult {
 982     QUICK,
 983     UNLOADED,
 984     SUBTYPE,
 985     NOT_SUBTYPE,
 986     LCA
 987   };
 988   template<class T> static TypePtr::MeetResult meet_instptr(PTR& ptr, const TypeInterfaces*& interfaces, const T* this_type,
 989                                                             const T* other_type, ciKlass*& res_klass, bool& res_xk);
 990 
 991   template<class T> static MeetResult meet_aryptr(PTR& ptr, const Type*& elem, const T* this_ary, const T* other_ary,
 992                                                   ciKlass*& res_klass, bool& res_xk);
 993 
 994   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);
 995   template <class T1, class T2> static bool is_same_java_type_as_helper_for_instance(const T1* this_one, const T2* other);
 996   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);
 997   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);
 998   template <class T1, class T2> static bool is_same_java_type_as_helper_for_array(const T1* this_one, const T2* other);
 999   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);
1000   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);
1001   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);
1002 public:
1003   const int _offset;            // Offset into oop, with TOP & BOT
1004   const PTR _ptr;               // Pointer equivalence class
1005 
1006   int offset() const { return _offset; }
1007   PTR ptr()    const { return _ptr; }
1008 
1009   static const TypePtr *make(TYPES t, PTR ptr, int offset,
1010                              const TypePtr* speculative = nullptr,
1011                              int inline_depth = InlineDepthBottom);
1012 
1013   // Return a 'ptr' version of this type
1014   virtual const TypePtr* cast_to_ptr_type(PTR ptr) const;
1015 
1016   virtual intptr_t get_con() const;
1017 
1018   int xadd_offset( intptr_t offset ) const;
1019   virtual const TypePtr* add_offset(intptr_t offset) const;
1020   virtual const TypePtr* with_offset(intptr_t offset) const;

1021   virtual bool eq(const Type *t) const;
1022   virtual uint hash() const;             // Type specific hashing
1023 
1024   virtual bool singleton(void) const;    // TRUE if type is a singleton
1025   virtual bool empty(void) const;        // TRUE if type is vacuous
1026   virtual const Type *xmeet( const Type *t ) const;
1027   virtual const Type *xmeet_helper( const Type *t ) const;
1028   int meet_offset( int offset ) const;
1029   int dual_offset( ) const;
1030   virtual const Type *xdual() const;    // Compute dual right now.
1031 
1032   // meet, dual and join over pointer equivalence sets
1033   PTR meet_ptr( const PTR in_ptr ) const { return ptr_meet[in_ptr][ptr()]; }
1034   PTR dual_ptr()                   const { return ptr_dual[ptr()];      }
1035 
1036   // This is textually confusing unless one recalls that
1037   // join(t) == dual()->meet(t->dual())->dual().
1038   PTR join_ptr( const PTR in_ptr ) const {
1039     return ptr_dual[ ptr_meet[ ptr_dual[in_ptr] ] [ dual_ptr() ] ];
1040   }
1041 
1042   // Speculative type helper methods.
1043   virtual const TypePtr* speculative() const { return _speculative; }
1044   int inline_depth() const                   { return _inline_depth; }
1045   virtual ciKlass* speculative_type() const;
1046   virtual ciKlass* speculative_type_not_null() const;
1047   virtual bool speculative_maybe_null() const;
1048   virtual bool speculative_always_null() const;
1049   virtual const TypePtr* remove_speculative() const;
1050   virtual const Type* cleanup_speculative() const;
1051   virtual bool would_improve_type(ciKlass* exact_kls, int inline_depth) const;
1052   virtual bool would_improve_ptr(ProfilePtrKind maybe_null) const;
1053   virtual const TypePtr* with_inline_depth(int depth) const;
1054 
1055   virtual bool maybe_null() const { return meet_ptr(Null) == ptr(); }
1056 








1057   // Tests for relation to centerline of type lattice:
1058   static bool above_centerline(PTR ptr) { return (ptr <= AnyNull); }
1059   static bool below_centerline(PTR ptr) { return (ptr >= NotNull); }
1060   // Convenience common pre-built types.
1061   static const TypePtr *NULL_PTR;
1062   static const TypePtr *NOTNULL;
1063   static const TypePtr *BOTTOM;
1064 #ifndef PRODUCT
1065   virtual void dump2( Dict &d, uint depth, outputStream *st  ) const;
1066 #endif
1067 };
1068 
1069 //------------------------------TypeRawPtr-------------------------------------
1070 // Class of raw pointers, pointers to things other than Oops.  Examples
1071 // include the stack pointer, top of heap, card-marking area, handles, etc.
1072 class TypeRawPtr : public TypePtr {
1073 protected:
1074   TypeRawPtr( PTR ptr, address bits ) : TypePtr(RawPtr,ptr,0), _bits(bits){}
1075 public:
1076   virtual bool eq( const Type *t ) const;
1077   virtual uint hash() const;    // Type specific hashing
1078 
1079   const address _bits;          // Constant value, if applicable
1080 
1081   static const TypeRawPtr *make( PTR ptr );
1082   static const TypeRawPtr *make( address bits );
1083 
1084   // Return a 'ptr' version of this type
1085   virtual const TypeRawPtr* cast_to_ptr_type(PTR ptr) const;
1086 
1087   virtual intptr_t get_con() const;
1088 
1089   virtual const TypePtr* add_offset(intptr_t offset) const;
1090   virtual const TypeRawPtr* with_offset(intptr_t offset) const { ShouldNotReachHere(); return nullptr;}
1091 
1092   virtual const Type *xmeet( const Type *t ) const;
1093   virtual const Type *xdual() const;    // Compute dual right now.
1094   // Convenience common pre-built types.
1095   static const TypeRawPtr *BOTTOM;
1096   static const TypeRawPtr *NOTNULL;
1097 #ifndef PRODUCT
1098   virtual void dump2( Dict &d, uint depth, outputStream *st  ) const;
1099 #endif
1100 };
1101 
1102 //------------------------------TypeOopPtr-------------------------------------
1103 // Some kind of oop (Java pointer), either instance or array.
1104 class TypeOopPtr : public TypePtr {
1105   friend class TypeAry;
1106   friend class TypePtr;
1107   friend class TypeInstPtr;
1108   friend class TypeAryPtr;
1109 protected:
1110  TypeOopPtr(TYPES t, PTR ptr, ciKlass* k, const TypeInterfaces* interfaces, bool xk, ciObject* o, int offset, int instance_id,
1111             const TypePtr* speculative, int inline_depth);
1112 public:
1113   virtual bool eq( const Type *t ) const;
1114   virtual uint hash() const;             // Type specific hashing
1115   virtual bool singleton(void) const;    // TRUE if type is a singleton
1116   enum {
1117    InstanceTop = -1,   // undefined instance
1118    InstanceBot = 0     // any possible instance
1119   };
1120 protected:
1121 
1122   // Oop is null, unless this is a constant oop.
1123   ciObject*     _const_oop;   // Constant oop
1124   // If _klass is null, then so is _sig.  This is an unloaded klass.
1125   ciKlass*      _klass;       // Klass object
1126 
1127   const TypeInterfaces* _interfaces;
1128 
1129   // Does the type exclude subclasses of the klass?  (Inexact == polymorphic.)
1130   bool          _klass_is_exact;
1131   bool          _is_ptr_to_narrowoop;
1132   bool          _is_ptr_to_narrowklass;
1133   bool          _is_ptr_to_boxed_value;
1134 
1135   // If not InstanceTop or InstanceBot, indicates that this is
1136   // a particular instance of this type which is distinct.
1137   // This is the node index of the allocation node creating this instance.
1138   int           _instance_id;
1139 
1140   static const TypeOopPtr* make_from_klass_common(ciKlass* klass, bool klass_change, bool try_for_exact, InterfaceHandling interface_handling);
1141 
1142   int dual_instance_id() const;
1143   int meet_instance_id(int uid) const;
1144 
1145   const TypeInterfaces* meet_interfaces(const TypeOopPtr* other) const;
1146 
1147   // Do not allow interface-vs.-noninterface joins to collapse to top.
1148   virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
1149 
1150   virtual ciKlass* exact_klass_helper() const { return nullptr; }
1151   virtual ciKlass* klass() const { return _klass;     }
1152 
1153 public:
1154 
1155   bool is_java_subtype_of(const TypeOopPtr* other) const {
1156     return is_java_subtype_of_helper(other, klass_is_exact(), other->klass_is_exact());
1157   }
1158 
1159   bool is_same_java_type_as(const TypePtr* other) const {
1160     return is_same_java_type_as_helper(other->is_oopptr());
1161   }
1162 
1163   virtual bool is_same_java_type_as_helper(const TypeOopPtr* other) const {
1164     ShouldNotReachHere(); return false;
1165   }
1166 
1167   bool maybe_java_subtype_of(const TypeOopPtr* other) const {
1168     return maybe_java_subtype_of_helper(other, klass_is_exact(), other->klass_is_exact());
1169   }
1170   virtual bool is_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const { ShouldNotReachHere(); return false; }
1171   virtual bool maybe_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const { ShouldNotReachHere(); return false; }

1178     return make_from_klass_common(klass, true, false, interface_handling);
1179   }
1180   // Same as before, but will produce an exact type, even if
1181   // the klass is not final, as long as it has exactly one implementation.
1182   static const TypeOopPtr* make_from_klass_unique(ciKlass* klass, InterfaceHandling interface_handling= ignore_interfaces) {
1183     return make_from_klass_common(klass, true, true, interface_handling);
1184   }
1185   // Same as before, but does not respects UseUniqueSubclasses.
1186   // Use this only for creating array element types.
1187   static const TypeOopPtr* make_from_klass_raw(ciKlass* klass, InterfaceHandling interface_handling = ignore_interfaces) {
1188     return make_from_klass_common(klass, false, false, interface_handling);
1189   }
1190   // Creates a singleton type given an object.
1191   // If the object cannot be rendered as a constant,
1192   // may return a non-singleton type.
1193   // If require_constant, produce a null if a singleton is not possible.
1194   static const TypeOopPtr* make_from_constant(ciObject* o,
1195                                               bool require_constant = false);
1196 
1197   // Make a generic (unclassed) pointer to an oop.
1198   static const TypeOopPtr* make(PTR ptr, int offset, int instance_id,
1199                                 const TypePtr* speculative = nullptr,
1200                                 int inline_depth = InlineDepthBottom);
1201 
1202   ciObject* const_oop()    const { return _const_oop; }
1203   // Exact klass, possibly an interface or an array of interface
1204   ciKlass* exact_klass(bool maybe_null = false) const { assert(klass_is_exact(), ""); ciKlass* k = exact_klass_helper(); assert(k != nullptr || maybe_null, ""); return k;  }
1205   ciKlass* unloaded_klass() const { assert(!is_loaded(), "only for unloaded types"); return klass(); }
1206 
1207   virtual bool  is_loaded() const { return klass()->is_loaded(); }
1208   virtual bool klass_is_exact()    const { return _klass_is_exact; }
1209 
1210   // Returns true if this pointer points at memory which contains a
1211   // compressed oop references.
1212   bool is_ptr_to_narrowoop_nv() const { return _is_ptr_to_narrowoop; }
1213   bool is_ptr_to_narrowklass_nv() const { return _is_ptr_to_narrowklass; }
1214   bool is_ptr_to_boxed_value()   const { return _is_ptr_to_boxed_value; }
1215   bool is_known_instance()       const { return _instance_id > 0; }
1216   int  instance_id()             const { return _instance_id; }
1217   bool is_known_instance_field() const { return is_known_instance() && _offset >= 0; }



1218 
1219   virtual intptr_t get_con() const;
1220 
1221   virtual const TypeOopPtr* cast_to_ptr_type(PTR ptr) const;
1222 
1223   virtual const TypeOopPtr* cast_to_exactness(bool klass_is_exact) const;
1224 
1225   virtual const TypeOopPtr *cast_to_instance_id(int instance_id) const;
1226 
1227   // corresponding pointer to klass, for a given instance
1228   virtual const TypeKlassPtr* as_klass_type(bool try_for_exact = false) const;
1229 
1230   virtual const TypeOopPtr* with_offset(intptr_t offset) const;
1231   virtual const TypePtr* add_offset(intptr_t offset) const;
1232 
1233   // Speculative type helper methods.
1234   virtual const TypeOopPtr* remove_speculative() const;
1235   virtual const Type* cleanup_speculative() const;
1236   virtual bool would_improve_type(ciKlass* exact_kls, int inline_depth) const;
1237   virtual const TypePtr* with_inline_depth(int depth) const;

1260     return _interfaces;
1261   };
1262 
1263   const TypeOopPtr* is_reference_type(const Type* other) const {
1264     return other->isa_oopptr();
1265   }
1266 
1267   const TypeAryPtr* is_array_type(const TypeOopPtr* other) const {
1268     return other->isa_aryptr();
1269   }
1270 
1271   const TypeInstPtr* is_instance_type(const TypeOopPtr* other) const {
1272     return other->isa_instptr();
1273   }
1274 };
1275 
1276 //------------------------------TypeInstPtr------------------------------------
1277 // Class of Java object pointers, pointing either to non-array Java instances
1278 // or to a Klass* (including array klasses).
1279 class TypeInstPtr : public TypeOopPtr {
1280   TypeInstPtr(PTR ptr, ciKlass* k, const TypeInterfaces* interfaces, bool xk, ciObject* o, int off, int instance_id,
1281               const TypePtr* speculative, int inline_depth);

1282   virtual bool eq( const Type *t ) const;
1283   virtual uint hash() const;             // Type specific hashing
1284 
1285   ciKlass* exact_klass_helper() const;
1286 
1287 public:
1288 
1289   // Instance klass, ignoring any interface
1290   ciInstanceKlass* instance_klass() const {
1291     assert(!(klass()->is_loaded() && klass()->is_interface()), "");
1292     return klass()->as_instance_klass();
1293   }
1294 
1295   bool is_same_java_type_as_helper(const TypeOopPtr* other) const;
1296   bool is_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const;
1297   bool maybe_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const;
1298 
1299   // Make a pointer to a constant oop.
1300   static const TypeInstPtr *make(ciObject* o) {
1301     ciKlass* k = o->klass();
1302     const TypeInterfaces* interfaces = TypePtr::interfaces(k, true, false, false, ignore_interfaces);
1303     return make(TypePtr::Constant, k, interfaces, true, o, 0, InstanceBot);
1304   }
1305   // Make a pointer to a constant oop with offset.
1306   static const TypeInstPtr *make(ciObject* o, int offset) {
1307     ciKlass* k = o->klass();
1308     const TypeInterfaces* interfaces = TypePtr::interfaces(k, true, false, false, ignore_interfaces);
1309     return make(TypePtr::Constant, k, interfaces, true, o, offset, InstanceBot);
1310   }
1311 
1312   // Make a pointer to some value of type klass.
1313   static const TypeInstPtr *make(PTR ptr, ciKlass* klass, InterfaceHandling interface_handling = ignore_interfaces) {
1314     const TypeInterfaces* interfaces = TypePtr::interfaces(klass, true, true, false, interface_handling);
1315     return make(ptr, klass, interfaces, false, nullptr, 0, InstanceBot);
1316   }
1317 
1318   // Make a pointer to some non-polymorphic value of exactly type klass.
1319   static const TypeInstPtr *make_exact(PTR ptr, ciKlass* klass) {
1320     const TypeInterfaces* interfaces = TypePtr::interfaces(klass, true, false, false, ignore_interfaces);
1321     return make(ptr, klass, interfaces, true, nullptr, 0, InstanceBot);
1322   }
1323 
1324   // Make a pointer to some value of type klass with offset.
1325   static const TypeInstPtr *make(PTR ptr, ciKlass* klass, int offset) {
1326     const TypeInterfaces* interfaces = TypePtr::interfaces(klass, true, false, false, ignore_interfaces);
1327     return make(ptr, klass, interfaces, false, nullptr, offset, InstanceBot);
1328   }
1329 
1330   static const TypeInstPtr *make(PTR ptr, ciKlass* k, const TypeInterfaces* interfaces, bool xk, ciObject* o, int offset,


1331                                  int instance_id = InstanceBot,
1332                                  const TypePtr* speculative = nullptr,
1333                                  int inline_depth = InlineDepthBottom);
1334 
1335   static const TypeInstPtr *make(PTR ptr, ciKlass* k, bool xk, ciObject* o, int offset, int instance_id = InstanceBot) {
1336     const TypeInterfaces* interfaces = TypePtr::interfaces(k, true, false, false, ignore_interfaces);
1337     return make(ptr, k, interfaces, xk, o, offset, instance_id);
1338   }
1339 
1340   /** Create constant type for a constant boxed value */
1341   const Type* get_const_boxed_value() const;
1342 
1343   // If this is a java.lang.Class constant, return the type for it or null.
1344   // Pass to Type::get_const_type to turn it to a type, which will usually
1345   // be a TypeInstPtr, but may also be a TypeInt::INT for int.class, etc.
1346   ciType* java_mirror_type() const;
1347 
1348   virtual const TypeInstPtr* cast_to_ptr_type(PTR ptr) const;
1349 
1350   virtual const TypeInstPtr* cast_to_exactness(bool klass_is_exact) const;
1351 
1352   virtual const TypeInstPtr* cast_to_instance_id(int instance_id) const;
1353 
1354   virtual const TypePtr* add_offset(intptr_t offset) const;
1355   virtual const TypeInstPtr* with_offset(intptr_t offset) const;
1356 
1357   // Speculative type helper methods.
1358   virtual const TypeInstPtr* remove_speculative() const;
1359   virtual const TypePtr* with_inline_depth(int depth) const;
1360   virtual const TypePtr* with_instance_id(int instance_id) const;
1361 




1362   // the core of the computation of the meet of 2 types
1363   virtual const Type *xmeet_helper(const Type *t) const;
1364   virtual const TypeInstPtr *xmeet_unloaded(const TypeInstPtr *tinst, const TypeInterfaces* interfaces) const;
1365   virtual const Type *xdual() const;    // Compute dual right now.
1366 
1367   const TypeKlassPtr* as_klass_type(bool try_for_exact = false) const;
1368 


1369   // Convenience common pre-built types.
1370   static const TypeInstPtr *NOTNULL;
1371   static const TypeInstPtr *BOTTOM;
1372   static const TypeInstPtr *MIRROR;
1373   static const TypeInstPtr *MARK;
1374   static const TypeInstPtr *KLASS;
1375 #ifndef PRODUCT
1376   virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
1377 #endif
1378 
1379 private:
1380   virtual bool is_meet_subtype_of_helper(const TypeOopPtr* other, bool this_xk, bool other_xk) const;
1381 
1382   virtual bool is_meet_same_type_as(const TypePtr* other) const {
1383     return _klass->equals(other->is_instptr()->_klass) && _interfaces->eq(other->is_instptr()->_interfaces);
1384   }
1385 
1386 };
1387 
1388 //------------------------------TypeAryPtr-------------------------------------
1389 // Class of Java array pointers
1390 class TypeAryPtr : public TypeOopPtr {
1391   friend class Type;
1392   friend class TypePtr;

1393 
1394   TypeAryPtr( PTR ptr, ciObject* o, const TypeAry *ary, ciKlass* k, bool xk,
1395               int offset, int instance_id, bool is_autobox_cache,
1396               const TypePtr* speculative, int inline_depth)
1397     : TypeOopPtr(AryPtr,ptr,k,_array_interfaces,xk,o,offset, instance_id, speculative, inline_depth),
1398     _ary(ary),
1399     _is_autobox_cache(is_autobox_cache)

1400  {
1401     int dummy;
1402     bool top_or_bottom = (base_element_type(dummy) == Type::TOP || base_element_type(dummy) == Type::BOTTOM);
1403 
1404     if (UseCompressedOops && (elem()->make_oopptr() != nullptr && !top_or_bottom) &&
1405         _offset != 0 && _offset != arrayOopDesc::length_offset_in_bytes() &&
1406         _offset != arrayOopDesc::klass_offset_in_bytes()) {
1407       _is_ptr_to_narrowoop = true;
1408     }
1409 
1410   }
1411   virtual bool eq( const Type *t ) const;
1412   virtual uint hash() const;    // Type specific hashing
1413   const TypeAry *_ary;          // Array we point into
1414   const bool     _is_autobox_cache;






1415 
1416   ciKlass* compute_klass(DEBUG_ONLY(bool verify = false)) const;
1417 
1418   // A pointer to delay allocation to Type::Initialize_shared()
1419 
1420   static const TypeInterfaces* _array_interfaces;
1421   ciKlass* exact_klass_helper() const;
1422   // Only guaranteed non null for array of basic types
1423   ciKlass* klass() const;
1424 
1425 public:
1426 
1427   bool is_same_java_type_as_helper(const TypeOopPtr* other) const;
1428   bool is_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const;
1429   bool maybe_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const;
1430 
1431   // returns base element type, an instance klass (and not interface) for object arrays
1432   const Type* base_element_type(int& dims) const;
1433 
1434   // Accessors
1435   bool  is_loaded() const { return (_ary->_elem->make_oopptr() ? _ary->_elem->make_oopptr()->is_loaded() : true); }
1436 
1437   const TypeAry* ary() const  { return _ary; }
1438   const Type*    elem() const { return _ary->_elem; }
1439   const TypeInt* size() const { return _ary->_size; }
1440   bool      is_stable() const { return _ary->_stable; }
1441 






1442   bool is_autobox_cache() const { return _is_autobox_cache; }
1443 
1444   static const TypeAryPtr *make(PTR ptr, const TypeAry *ary, ciKlass* k, bool xk, int offset,

1445                                 int instance_id = InstanceBot,
1446                                 const TypePtr* speculative = nullptr,
1447                                 int inline_depth = InlineDepthBottom);
1448   // Constant pointer to array
1449   static const TypeAryPtr *make(PTR ptr, ciObject* o, const TypeAry *ary, ciKlass* k, bool xk, int offset,

1450                                 int instance_id = InstanceBot,
1451                                 const TypePtr* speculative = nullptr,
1452                                 int inline_depth = InlineDepthBottom, bool is_autobox_cache = false);

1453 
1454   // Return a 'ptr' version of this type
1455   virtual const TypeAryPtr* cast_to_ptr_type(PTR ptr) const;
1456 
1457   virtual const TypeAryPtr* cast_to_exactness(bool klass_is_exact) const;
1458 
1459   virtual const TypeAryPtr* cast_to_instance_id(int instance_id) const;
1460 
1461   virtual const TypeAryPtr* cast_to_size(const TypeInt* size) const;
1462   virtual const TypeInt* narrow_size_type(const TypeInt* size) const;
1463 
1464   virtual bool empty(void) const;        // TRUE if type is vacuous
1465   virtual const TypePtr *add_offset( intptr_t offset ) const;
1466   virtual const TypeAryPtr *with_offset( intptr_t offset ) const;
1467   const TypeAryPtr* with_ary(const TypeAry* ary) const;
1468 
1469   // Speculative type helper methods.
1470   virtual const TypeAryPtr* remove_speculative() const;

1471   virtual const TypePtr* with_inline_depth(int depth) const;
1472   virtual const TypePtr* with_instance_id(int instance_id) const;
1473 
1474   // the core of the computation of the meet of 2 types
1475   virtual const Type *xmeet_helper(const Type *t) const;
1476   virtual const Type *xdual() const;    // Compute dual right now.
1477 








1478   const TypeAryPtr* cast_to_stable(bool stable, int stable_dimension = 1) const;
1479   int stable_dimension() const;
1480 
1481   const TypeAryPtr* cast_to_autobox_cache() const;
1482 
1483   static jint max_array_length(BasicType etype) ;







1484   virtual const TypeKlassPtr* as_klass_type(bool try_for_exact = false) const;
1485 


1486   // Convenience common pre-built types.
1487   static const TypeAryPtr *RANGE;
1488   static const TypeAryPtr *OOPS;
1489   static const TypeAryPtr *NARROWOOPS;
1490   static const TypeAryPtr *BYTES;
1491   static const TypeAryPtr *SHORTS;
1492   static const TypeAryPtr *CHARS;
1493   static const TypeAryPtr *INTS;
1494   static const TypeAryPtr *LONGS;
1495   static const TypeAryPtr *FLOATS;
1496   static const TypeAryPtr *DOUBLES;

1497   // selects one of the above:
1498   static const TypeAryPtr *get_array_body_type(BasicType elem) {
1499     assert((uint)elem <= T_CONFLICT && _array_body_type[elem] != nullptr, "bad elem type");
1500     return _array_body_type[elem];
1501   }
1502   static const TypeAryPtr *_array_body_type[T_CONFLICT+1];
1503   // sharpen the type of an int which is used as an array size
1504 #ifndef PRODUCT
1505   virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
1506 #endif
1507 private:
1508   virtual bool is_meet_subtype_of_helper(const TypeOopPtr* other, bool this_xk, bool other_xk) const;
1509 };
1510 
1511 //------------------------------TypeMetadataPtr-------------------------------------
1512 // Some kind of metadata, either Method*, MethodData* or CPCacheOop
1513 class TypeMetadataPtr : public TypePtr {
1514 protected:
1515   TypeMetadataPtr(PTR ptr, ciMetadata* metadata, int offset);
1516   // Do not allow interface-vs.-noninterface joins to collapse to top.
1517   virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
1518 public:
1519   virtual bool eq( const Type *t ) const;
1520   virtual uint hash() const;             // Type specific hashing
1521   virtual bool singleton(void) const;    // TRUE if type is a singleton
1522 
1523 private:
1524   ciMetadata*   _metadata;
1525 
1526 public:
1527   static const TypeMetadataPtr* make(PTR ptr, ciMetadata* m, int offset);
1528 
1529   static const TypeMetadataPtr* make(ciMethod* m);
1530   static const TypeMetadataPtr* make(ciMethodData* m);
1531 
1532   ciMetadata* metadata() const { return _metadata; }
1533 
1534   virtual const TypeMetadataPtr* cast_to_ptr_type(PTR ptr) const;
1535 
1536   virtual const TypePtr *add_offset( intptr_t offset ) const;
1537 
1538   virtual const Type *xmeet( const Type *t ) const;
1539   virtual const Type *xdual() const;    // Compute dual right now.
1540 
1541   virtual intptr_t get_con() const;
1542 
1543   // Convenience common pre-built types.
1544   static const TypeMetadataPtr *BOTTOM;
1545 
1546 #ifndef PRODUCT
1547   virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
1548 #endif
1549 };
1550 
1551 //------------------------------TypeKlassPtr-----------------------------------
1552 // Class of Java Klass pointers
1553 class TypeKlassPtr : public TypePtr {
1554   friend class TypeInstKlassPtr;
1555   friend class TypeAryKlassPtr;
1556   friend class TypePtr;
1557 protected:
1558   TypeKlassPtr(TYPES t, PTR ptr, ciKlass* klass, const TypeInterfaces* interfaces, int offset);
1559 
1560   virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
1561 
1562 public:
1563   virtual bool eq( const Type *t ) const;
1564   virtual uint hash() const;
1565   virtual bool singleton(void) const;    // TRUE if type is a singleton
1566 
1567 protected:
1568 
1569   ciKlass* _klass;
1570   const TypeInterfaces* _interfaces;
1571   const TypeInterfaces* meet_interfaces(const TypeKlassPtr* other) const;
1572   virtual bool must_be_exact() const { ShouldNotReachHere(); return false; }
1573   virtual ciKlass* exact_klass_helper() const;
1574   virtual ciKlass* klass() const { return  _klass; }
1575 
1576 public:
1577 
1578   bool is_java_subtype_of(const TypeKlassPtr* other) const {
1579     return is_java_subtype_of_helper(other, klass_is_exact(), other->klass_is_exact());
1580   }
1581   bool is_same_java_type_as(const TypePtr* other) const {
1582     return is_same_java_type_as_helper(other->is_klassptr());
1583   }
1584 
1585   bool maybe_java_subtype_of(const TypeKlassPtr* other) const {
1586     return maybe_java_subtype_of_helper(other, klass_is_exact(), other->klass_is_exact());
1587   }
1588   virtual bool is_same_java_type_as_helper(const TypeKlassPtr* other) const { ShouldNotReachHere(); return false; }
1589   virtual bool is_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const { ShouldNotReachHere(); return false; }
1590   virtual bool maybe_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const { ShouldNotReachHere(); return false; }
1591 
1592   // Exact klass, possibly an interface or an array of interface
1593   ciKlass* exact_klass(bool maybe_null = false) const { assert(klass_is_exact(), ""); ciKlass* k = exact_klass_helper(); assert(k != nullptr || maybe_null, ""); return k;  }
1594   virtual bool klass_is_exact()    const { return _ptr == Constant; }
1595 
1596   static const TypeKlassPtr* make(ciKlass* klass, InterfaceHandling interface_handling = ignore_interfaces);
1597   static const TypeKlassPtr *make(PTR ptr, ciKlass* klass, int offset, InterfaceHandling interface_handling = ignore_interfaces);
1598 
1599   virtual bool  is_loaded() const { return _klass->is_loaded(); }
1600 
1601   virtual const TypeKlassPtr* cast_to_ptr_type(PTR ptr) const { ShouldNotReachHere(); return nullptr; }
1602 
1603   virtual const TypeKlassPtr *cast_to_exactness(bool klass_is_exact) const { ShouldNotReachHere(); return nullptr; }
1604 
1605   // corresponding pointer to instance, for a given class
1606   virtual const TypeOopPtr* as_instance_type(bool klass_change = true) const { ShouldNotReachHere(); return nullptr; }
1607 
1608   virtual const TypePtr *add_offset( intptr_t offset ) const { ShouldNotReachHere(); return nullptr; }
1609   virtual const Type    *xmeet( const Type *t ) const { ShouldNotReachHere(); return nullptr; }
1610   virtual const Type    *xdual() const { ShouldNotReachHere(); return nullptr; }
1611 
1612   virtual intptr_t get_con() const;
1613 
1614   virtual const TypeKlassPtr* with_offset(intptr_t offset) const { ShouldNotReachHere(); return nullptr; }
1615 

1616   virtual const TypeKlassPtr* try_improve() const { return this; }
1617 
1618 #ifndef PRODUCT
1619   virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
1620 #endif
1621 private:
1622   virtual bool is_meet_subtype_of(const TypePtr* other) const {
1623     return is_meet_subtype_of_helper(other->is_klassptr(), klass_is_exact(), other->is_klassptr()->klass_is_exact());
1624   }
1625 
1626   virtual bool is_meet_subtype_of_helper(const TypeKlassPtr* other, bool this_xk, bool other_xk) const {
1627     ShouldNotReachHere(); return false;
1628   }
1629 
1630   virtual const TypeInterfaces* interfaces() const {
1631     return _interfaces;
1632   };
1633 
1634   const TypeKlassPtr* is_reference_type(const Type* other) const {
1635     return other->isa_klassptr();
1636   }
1637 
1638   const TypeAryKlassPtr* is_array_type(const TypeKlassPtr* other) const {
1639     return other->isa_aryklassptr();
1640   }
1641 
1642   const TypeInstKlassPtr* is_instance_type(const TypeKlassPtr* other) const {
1643     return other->isa_instklassptr();
1644   }
1645 };
1646 
1647 // Instance klass pointer, mirrors TypeInstPtr
1648 class TypeInstKlassPtr : public TypeKlassPtr {
1649 
1650   TypeInstKlassPtr(PTR ptr, ciKlass* klass, const TypeInterfaces* interfaces, int offset)
1651     : TypeKlassPtr(InstKlassPtr, ptr, klass, interfaces, offset) {
1652     assert(klass->is_instance_klass() && (!klass->is_loaded() || !klass->is_interface()), "");
1653   }
1654 
1655   virtual bool must_be_exact() const;
1656 


1657 public:
1658   // Instance klass ignoring any interface
1659   ciInstanceKlass* instance_klass() const {
1660     assert(!klass()->is_interface(), "");
1661     return klass()->as_instance_klass();
1662   }
1663 
1664   bool is_same_java_type_as_helper(const TypeKlassPtr* other) const;
1665   bool is_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const;
1666   bool maybe_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const;
1667 


1668   static const TypeInstKlassPtr *make(ciKlass* k, InterfaceHandling interface_handling) {
1669     const TypeInterfaces* interfaces = TypePtr::interfaces(k, true, true, false, interface_handling);
1670     return make(TypePtr::Constant, k, interfaces, 0);
1671   }
1672   static const TypeInstKlassPtr* make(PTR ptr, ciKlass* k, const TypeInterfaces* interfaces, int offset);
1673 
1674   static const TypeInstKlassPtr* make(PTR ptr, ciKlass* k, int offset) {
1675     const TypeInterfaces* interfaces = TypePtr::interfaces(k, true, false, false, ignore_interfaces);
1676     return make(ptr, k, interfaces, offset);
1677   }
1678 
1679   virtual const TypeInstKlassPtr* cast_to_ptr_type(PTR ptr) const;
1680 
1681   virtual const TypeKlassPtr *cast_to_exactness(bool klass_is_exact) const;
1682 
1683   // corresponding pointer to instance, for a given class
1684   virtual const TypeOopPtr* as_instance_type(bool klass_change = true) const;
1685   virtual uint hash() const;
1686   virtual bool eq(const Type *t) const;
1687 
1688   virtual const TypePtr *add_offset( intptr_t offset ) const;
1689   virtual const Type    *xmeet( const Type *t ) const;
1690   virtual const Type    *xdual() const;
1691   virtual const TypeInstKlassPtr* with_offset(intptr_t offset) const;
1692 
1693   virtual const TypeKlassPtr* try_improve() const;
1694 





1695   // Convenience common pre-built types.
1696   static const TypeInstKlassPtr* OBJECT; // Not-null object klass or below
1697   static const TypeInstKlassPtr* OBJECT_OR_NULL; // Maybe-null version of same
1698 private:
1699   virtual bool is_meet_subtype_of_helper(const TypeKlassPtr* other, bool this_xk, bool other_xk) const;
1700 };
1701 
1702 // Array klass pointer, mirrors TypeAryPtr
1703 class TypeAryKlassPtr : public TypeKlassPtr {
1704   friend class TypeInstKlassPtr;
1705   friend class Type;
1706   friend class TypePtr;
1707 
1708   const Type *_elem;



1709 
1710   static const TypeInterfaces* _array_interfaces;
1711   TypeAryKlassPtr(PTR ptr, const Type *elem, ciKlass* klass, int offset)
1712     : TypeKlassPtr(AryKlassPtr, ptr, klass, _array_interfaces, offset), _elem(elem) {
1713     assert(klass == nullptr || klass->is_type_array_klass() || !klass->as_obj_array_klass()->base_element_klass()->is_interface(), "");
1714   }
1715 
1716   virtual ciKlass* exact_klass_helper() const;
1717   // Only guaranteed non null for array of basic types
1718   virtual ciKlass* klass() const;
1719 
1720   virtual bool must_be_exact() const;
1721 








1722 public:
1723 
1724   // returns base element type, an instance klass (and not interface) for object arrays
1725   const Type* base_element_type(int& dims) const;
1726 
1727   static const TypeAryKlassPtr *make(PTR ptr, ciKlass* k, int offset, InterfaceHandling interface_handling);
1728 
1729   bool is_same_java_type_as_helper(const TypeKlassPtr* other) const;
1730   bool is_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const;
1731   bool maybe_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const;
1732 
1733   bool  is_loaded() const { return (_elem->isa_klassptr() ? _elem->is_klassptr()->is_loaded() : true); }
1734 
1735   static const TypeAryKlassPtr *make(PTR ptr, const Type *elem, ciKlass* k, int offset);

1736   static const TypeAryKlassPtr* make(ciKlass* klass, InterfaceHandling interface_handling);
1737 
1738   const Type *elem() const { return _elem; }
1739 
1740   virtual bool eq(const Type *t) const;
1741   virtual uint hash() const;             // Type specific hashing
1742 
1743   virtual const TypeAryKlassPtr* cast_to_ptr_type(PTR ptr) const;
1744 
1745   virtual const TypeKlassPtr *cast_to_exactness(bool klass_is_exact) const;
1746 


1747   // corresponding pointer to instance, for a given class
1748   virtual const TypeOopPtr* as_instance_type(bool klass_change = true) const;
1749 
1750   virtual const TypePtr *add_offset( intptr_t offset ) const;
1751   virtual const Type    *xmeet( const Type *t ) const;
1752   virtual const Type    *xdual() const;      // Compute dual right now.
1753 
1754   virtual const TypeAryKlassPtr* with_offset(intptr_t offset) const;
1755 
1756   virtual bool empty(void) const {
1757     return TypeKlassPtr::empty() || _elem->empty();
1758   }
1759 






1760 #ifndef PRODUCT
1761   virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
1762 #endif
1763 private:
1764   virtual bool is_meet_subtype_of_helper(const TypeKlassPtr* other, bool this_xk, bool other_xk) const;
1765 };
1766 
1767 class TypeNarrowPtr : public Type {
1768 protected:
1769   const TypePtr* _ptrtype; // Could be TypePtr::NULL_PTR
1770 
1771   TypeNarrowPtr(TYPES t, const TypePtr* ptrtype): Type(t),
1772                                                   _ptrtype(ptrtype) {
1773     assert(ptrtype->offset() == 0 ||
1774            ptrtype->offset() == OffsetBot ||
1775            ptrtype->offset() == OffsetTop, "no real offsets");
1776   }
1777 
1778   virtual const TypeNarrowPtr *isa_same_narrowptr(const Type *t) const = 0;
1779   virtual const TypeNarrowPtr *is_same_narrowptr(const Type *t) const = 0;

1875   }
1876 
1877   virtual const TypeNarrowPtr *make_hash_same_narrowptr(const TypePtr *t) const {
1878     return (const TypeNarrowPtr*)((new TypeNarrowKlass(t))->hashcons());
1879   }
1880 
1881 public:
1882   static const TypeNarrowKlass *make( const TypePtr* type);
1883 
1884   // static const TypeNarrowKlass *BOTTOM;
1885   static const TypeNarrowKlass *NULL_PTR;
1886 
1887 #ifndef PRODUCT
1888   virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
1889 #endif
1890 };
1891 
1892 //------------------------------TypeFunc---------------------------------------
1893 // Class of Array Types
1894 class TypeFunc : public Type {
1895   TypeFunc( const TypeTuple *domain, const TypeTuple *range ) : Type(Function),  _domain(domain), _range(range) {}

1896   virtual bool eq( const Type *t ) const;
1897   virtual uint hash() const;             // Type specific hashing
1898   virtual bool singleton(void) const;    // TRUE if type is a singleton
1899   virtual bool empty(void) const;        // TRUE if type is vacuous
1900 
1901   const TypeTuple* const _domain;     // Domain of inputs
1902   const TypeTuple* const _range;      // Range of results











1903 
1904 public:
1905   // Constants are shared among ADLC and VM
1906   enum { Control    = AdlcVMDeps::Control,
1907          I_O        = AdlcVMDeps::I_O,
1908          Memory     = AdlcVMDeps::Memory,
1909          FramePtr   = AdlcVMDeps::FramePtr,
1910          ReturnAdr  = AdlcVMDeps::ReturnAdr,
1911          Parms      = AdlcVMDeps::Parms
1912   };
1913 
1914 
1915   // Accessors:
1916   const TypeTuple* domain() const { return _domain; }
1917   const TypeTuple* range()  const { return _range; }
1918 
1919   static const TypeFunc *make(ciMethod* method);
1920   static const TypeFunc *make(ciSignature signature, const Type* extra);



1921   static const TypeFunc *make(const TypeTuple* domain, const TypeTuple* range);
1922 
1923   virtual const Type *xmeet( const Type *t ) const;
1924   virtual const Type *xdual() const;    // Compute dual right now.
1925 
1926   BasicType return_type() const;
1927 


1928 #ifndef PRODUCT
1929   virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
1930 #endif
1931   // Convenience common pre-built types.
1932 };
1933 
1934 //------------------------------accessors--------------------------------------
1935 inline bool Type::is_ptr_to_narrowoop() const {
1936 #ifdef _LP64
1937   return (isa_oopptr() != nullptr && is_oopptr()->is_ptr_to_narrowoop_nv());
1938 #else
1939   return false;
1940 #endif
1941 }
1942 
1943 inline bool Type::is_ptr_to_narrowklass() const {
1944 #ifdef _LP64
1945   return (isa_oopptr() != nullptr && is_oopptr()->is_ptr_to_narrowklass_nv());
1946 #else
1947   return false;

2163   return (_base == NarrowOop) ? is_narrowoop()->get_ptrtype()->isa_oopptr() : isa_oopptr();
2164 }
2165 
2166 inline const TypeNarrowOop* Type::make_narrowoop() const {
2167   return (_base == NarrowOop) ? is_narrowoop() :
2168                                 (isa_ptr() ? TypeNarrowOop::make(is_ptr()) : nullptr);
2169 }
2170 
2171 inline const TypeNarrowKlass* Type::make_narrowklass() const {
2172   return (_base == NarrowKlass) ? is_narrowklass() :
2173                                   (isa_ptr() ? TypeNarrowKlass::make(is_ptr()) : nullptr);
2174 }
2175 
2176 inline bool Type::is_floatingpoint() const {
2177   if( (_base == FloatCon)  || (_base == FloatBot) ||
2178       (_base == DoubleCon) || (_base == DoubleBot) )
2179     return true;
2180   return false;
2181 }
2182 








2183 
2184 // ===============================================================
2185 // Things that need to be 64-bits in the 64-bit build but
2186 // 32-bits in the 32-bit build.  Done this way to get full
2187 // optimization AND strong typing.
2188 #ifdef _LP64
2189 
2190 // For type queries and asserts
2191 #define is_intptr_t  is_long
2192 #define isa_intptr_t isa_long
2193 #define find_intptr_t_type find_long_type
2194 #define find_intptr_t_con  find_long_con
2195 #define TypeX        TypeLong
2196 #define Type_X       Type::Long
2197 #define TypeX_X      TypeLong::LONG
2198 #define TypeX_ZERO   TypeLong::ZERO
2199 // For 'ideal_reg' machine registers
2200 #define Op_RegX      Op_RegL
2201 // For phase->intcon variants
2202 #define MakeConX     longcon
2203 #define ConXNode     ConLNode
2204 // For array index arithmetic
2205 #define MulXNode     MulLNode
2206 #define AndXNode     AndLNode
2207 #define OrXNode      OrLNode
2208 #define CmpXNode     CmpLNode

2209 #define SubXNode     SubLNode
2210 #define LShiftXNode  LShiftLNode
2211 // For object size computation:
2212 #define AddXNode     AddLNode
2213 #define RShiftXNode  RShiftLNode
2214 // For card marks and hashcodes
2215 #define URShiftXNode URShiftLNode
2216 // For shenandoahSupport
2217 #define LoadXNode    LoadLNode
2218 #define StoreXNode   StoreLNode
2219 // Opcodes
2220 #define Op_LShiftX   Op_LShiftL
2221 #define Op_AndX      Op_AndL
2222 #define Op_AddX      Op_AddL
2223 #define Op_SubX      Op_SubL
2224 #define Op_XorX      Op_XorL
2225 #define Op_URShiftX  Op_URShiftL
2226 #define Op_LoadX     Op_LoadL

2227 // conversions
2228 #define ConvI2X(x)   ConvI2L(x)
2229 #define ConvL2X(x)   (x)
2230 #define ConvX2I(x)   ConvL2I(x)
2231 #define ConvX2L(x)   (x)
2232 #define ConvX2UL(x)  (x)
2233 
2234 #else
2235 
2236 // For type queries and asserts
2237 #define is_intptr_t  is_int
2238 #define isa_intptr_t isa_int
2239 #define find_intptr_t_type find_int_type
2240 #define find_intptr_t_con  find_int_con
2241 #define TypeX        TypeInt
2242 #define Type_X       Type::Int
2243 #define TypeX_X      TypeInt::INT
2244 #define TypeX_ZERO   TypeInt::ZERO
2245 // For 'ideal_reg' machine registers
2246 #define Op_RegX      Op_RegI
2247 // For phase->intcon variants
2248 #define MakeConX     intcon
2249 #define ConXNode     ConINode
2250 // For array index arithmetic
2251 #define MulXNode     MulINode
2252 #define AndXNode     AndINode
2253 #define OrXNode      OrINode
2254 #define CmpXNode     CmpINode

2255 #define SubXNode     SubINode
2256 #define LShiftXNode  LShiftINode
2257 // For object size computation:
2258 #define AddXNode     AddINode
2259 #define RShiftXNode  RShiftINode
2260 // For card marks and hashcodes
2261 #define URShiftXNode URShiftINode
2262 // For shenandoahSupport
2263 #define LoadXNode    LoadINode
2264 #define StoreXNode   StoreINode
2265 // Opcodes
2266 #define Op_LShiftX   Op_LShiftI
2267 #define Op_AndX      Op_AndI
2268 #define Op_AddX      Op_AddI
2269 #define Op_SubX      Op_SubI
2270 #define Op_XorX      Op_XorI
2271 #define Op_URShiftX  Op_URShiftI
2272 #define Op_LoadX     Op_LoadI

2273 // conversions
2274 #define ConvI2X(x)   (x)
2275 #define ConvL2X(x)   ConvL2I(x)
2276 #define ConvX2I(x)   (x)
2277 #define ConvX2L(x)   ConvI2L(x)
2278 #define ConvX2UL(x)  ConvI2UL(x)
2279 
2280 #endif
2281 
2282 #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;

 121     Function,                   // Function signature
 122     Abio,                       // Abstract I/O
 123     Return_Address,             // Subroutine return address
 124     Memory,                     // Abstract store
 125     FloatTop,                   // No float value
 126     FloatCon,                   // Floating point constant
 127     FloatBot,                   // Any float value
 128     DoubleTop,                  // No double value
 129     DoubleCon,                  // Double precision constant
 130     DoubleBot,                  // Any double value
 131     Bottom,                     // Bottom of lattice
 132     lastype                     // Bogus ending type (not in lattice)
 133   };
 134 
 135   // Signal values for offsets from a base pointer
 136   enum OFFSET_SIGNALS {
 137     OffsetTop = -2000000000,    // undefined offset
 138     OffsetBot = -2000000001     // any possible offset
 139   };
 140 
 141   class Offset {
 142   private:
 143     int _offset;
 144 
 145   public:
 146     explicit Offset(int offset) : _offset(offset) {}
 147 
 148     const Offset meet(const Offset other) const;
 149     const Offset dual() const;
 150     const Offset add(intptr_t offset) const;
 151     bool operator==(const Offset& other) const {
 152       return _offset == other._offset;
 153     }
 154     bool operator!=(const Offset& other) const {
 155       return _offset != other._offset;
 156     }
 157     int get() const { return _offset; }
 158 
 159     void dump2(outputStream *st) const;
 160 
 161     static const Offset top;
 162     static const Offset bottom;
 163   };
 164 
 165   // Min and max WIDEN values.
 166   enum WIDEN {
 167     WidenMin = 0,
 168     WidenMax = 3
 169   };
 170 
 171 private:
 172   typedef struct {
 173     TYPES                dual_type;
 174     BasicType            basic_type;
 175     const char*          msg;
 176     bool                 isa_oop;
 177     uint                 ideal_reg;
 178     relocInfo::relocType reloc;
 179   } TypeInfo;
 180 
 181   // Dictionary of types shared among compilations.
 182   static Dict* _shared_type_dict;
 183   static const TypeInfo _type_info[];
 184 

 335   const TypeNarrowKlass *isa_narrowklass() const;// Returns null if not oop ptr type
 336   const TypeOopPtr   *isa_oopptr() const;        // Returns null if not oop ptr type
 337   const TypeOopPtr   *is_oopptr() const;         // Java-style GC'd pointer
 338   const TypeInstPtr  *isa_instptr() const;       // Returns null if not InstPtr
 339   const TypeInstPtr  *is_instptr() const;        // Instance
 340   const TypeAryPtr   *isa_aryptr() const;        // Returns null if not AryPtr
 341   const TypeAryPtr   *is_aryptr() const;         // Array oop
 342 
 343   const TypeMetadataPtr   *isa_metadataptr() const;   // Returns null if not oop ptr type
 344   const TypeMetadataPtr   *is_metadataptr() const;    // Java-style GC'd pointer
 345   const TypeKlassPtr      *isa_klassptr() const;      // Returns null if not KlassPtr
 346   const TypeKlassPtr      *is_klassptr() const;       // assert if not KlassPtr
 347   const TypeInstKlassPtr  *isa_instklassptr() const;  // Returns null if not IntKlassPtr
 348   const TypeInstKlassPtr  *is_instklassptr() const;   // assert if not IntKlassPtr
 349   const TypeAryKlassPtr   *isa_aryklassptr() const;   // Returns null if not AryKlassPtr
 350   const TypeAryKlassPtr   *is_aryklassptr() const;    // assert if not AryKlassPtr
 351 
 352   virtual bool      is_finite() const;           // Has a finite value
 353   virtual bool      is_nan()    const;           // Is not a number (NaN)
 354 
 355   bool is_inlinetypeptr() const;
 356   virtual ciInlineKlass* inline_klass() const;
 357 
 358   // Returns this ptr type or the equivalent ptr type for this compressed pointer.
 359   const TypePtr* make_ptr() const;
 360 
 361   // Returns this oopptr type or the equivalent oopptr type for this compressed pointer.
 362   // Asserts if the underlying type is not an oopptr or narrowoop.
 363   const TypeOopPtr* make_oopptr() const;
 364 
 365   // Returns this compressed pointer or the equivalent compressed version
 366   // of this pointer type.
 367   const TypeNarrowOop* make_narrowoop() const;
 368 
 369   // Returns this compressed klass pointer or the equivalent
 370   // compressed version of this pointer type.
 371   const TypeNarrowKlass* make_narrowklass() const;
 372 
 373   // Special test for register pressure heuristic
 374   bool is_floatingpoint() const;        // True if Float or Double base type
 375 
 376   // Do you have memory, directly or through a tuple?
 377   bool has_memory( ) const;

 736   const Type ** const _fields;           // Array of field types
 737 
 738 public:
 739   virtual bool eq( const Type *t ) const;
 740   virtual uint hash() const;             // Type specific hashing
 741   virtual bool singleton(void) const;    // TRUE if type is a singleton
 742   virtual bool empty(void) const;        // TRUE if type is vacuous
 743 
 744   // Accessors:
 745   uint cnt() const { return _cnt; }
 746   const Type* field_at(uint i) const {
 747     assert(i < _cnt, "oob");
 748     return _fields[i];
 749   }
 750   void set_field_at(uint i, const Type* t) {
 751     assert(i < _cnt, "oob");
 752     _fields[i] = t;
 753   }
 754 
 755   static const TypeTuple *make( uint cnt, const Type **fields );
 756   static const TypeTuple *make_range(ciSignature* sig, InterfaceHandling interface_handling = ignore_interfaces, bool ret_vt_fields = false);
 757   static const TypeTuple *make_domain(ciMethod* method, InterfaceHandling interface_handling, bool vt_fields_as_args = false);
 758 
 759   // Subroutine call type with space allocated for argument types
 760   // Memory for Control, I_O, Memory, FramePtr, and ReturnAdr is allocated implicitly
 761   static const Type **fields( uint arg_cnt );
 762 
 763   virtual const Type *xmeet( const Type *t ) const;
 764   virtual const Type *xdual() const;    // Compute dual right now.
 765   // Convenience common pre-built types.
 766   static const TypeTuple *IFBOTH;
 767   static const TypeTuple *IFFALSE;
 768   static const TypeTuple *IFTRUE;
 769   static const TypeTuple *IFNEITHER;
 770   static const TypeTuple *LOOPBODY;
 771   static const TypeTuple *MEMBAR;
 772   static const TypeTuple *STORECONDITIONAL;
 773   static const TypeTuple *START_I2C;
 774   static const TypeTuple *INT_PAIR;
 775   static const TypeTuple *LONG_PAIR;
 776   static const TypeTuple *INT_CC_PAIR;
 777   static const TypeTuple *LONG_CC_PAIR;
 778 #ifndef PRODUCT
 779   virtual void dump2( Dict &d, uint, outputStream *st  ) const; // Specialized per-Type dumping
 780 #endif
 781 };
 782 
 783 //------------------------------TypeAry----------------------------------------
 784 // Class of Array Types
 785 class TypeAry : public Type {
 786   TypeAry(const Type* elem, const TypeInt* size, bool stable, bool flat, bool not_flat, bool not_null_free) : Type(Array),
 787       _elem(elem), _size(size), _stable(stable), _flat(flat), _not_flat(not_flat), _not_null_free(not_null_free) {}
 788 public:
 789   virtual bool eq( const Type *t ) const;
 790   virtual uint hash() const;             // Type specific hashing
 791   virtual bool singleton(void) const;    // TRUE if type is a singleton
 792   virtual bool empty(void) const;        // TRUE if type is vacuous
 793 
 794 private:
 795   const Type *_elem;            // Element type of array
 796   const TypeInt *_size;         // Elements in array
 797   const bool _stable;           // Are elements @Stable?
 798 
 799   // Inline type array properties
 800   const bool _flat;             // Array is flat
 801   const bool _not_flat;         // Array is never flat
 802   const bool _not_null_free;    // Array is never null-free
 803 
 804   friend class TypeAryPtr;
 805 
 806 public:
 807   static const TypeAry* make(const Type* elem, const TypeInt* size, bool stable = false,
 808                              bool flat = false, bool not_flat = false, bool not_null_free = false);
 809 
 810   virtual const Type *xmeet( const Type *t ) const;
 811   virtual const Type *xdual() const;    // Compute dual right now.
 812   bool ary_must_be_exact() const;  // true if arrays of such are never generic
 813   virtual const TypeAry* remove_speculative() const;
 814   virtual const Type* cleanup_speculative() const;
 815 #ifndef PRODUCT
 816   virtual void dump2( Dict &d, uint, outputStream *st  ) const; // Specialized per-Type dumping
 817 #endif
 818 };
 819 
 820 //------------------------------TypeVect---------------------------------------
 821 // Class of Vector Types
 822 class TypeVect : public Type {
 823   const Type*   _elem;  // Vector's element type
 824   const uint  _length;  // Elements in vector (power of 2)
 825 
 826 protected:
 827   TypeVect(TYPES t, const Type* elem, uint length) : Type(t),
 828     _elem(elem), _length(length) {}

 949 
 950   const Type* xmeet(const Type* t) const;
 951 
 952   bool singleton(void) const;
 953 };
 954 
 955 //------------------------------TypePtr----------------------------------------
 956 // Class of machine Pointer Types: raw data, instances or arrays.
 957 // If the _base enum is AnyPtr, then this refers to all of the above.
 958 // Otherwise the _base will indicate which subset of pointers is affected,
 959 // and the class will be inherited from.
 960 class TypePtr : public Type {
 961   friend class TypeNarrowPtr;
 962   friend class Type;
 963 protected:
 964   static const TypeInterfaces* interfaces(ciKlass*& k, bool klass, bool interface, bool array, InterfaceHandling interface_handling);
 965 
 966 public:
 967   enum PTR { TopPTR, AnyNull, Constant, Null, NotNull, BotPTR, lastPTR };
 968 protected:
 969   TypePtr(TYPES t, PTR ptr, Offset offset,
 970           const TypePtr* speculative = nullptr,
 971           int inline_depth = InlineDepthBottom) :
 972     Type(t), _speculative(speculative), _inline_depth(inline_depth), _offset(offset),
 973     _ptr(ptr) {}
 974   static const PTR ptr_meet[lastPTR][lastPTR];
 975   static const PTR ptr_dual[lastPTR];
 976   static const char * const ptr_msg[lastPTR];
 977 
 978   enum {
 979     InlineDepthBottom = INT_MAX,
 980     InlineDepthTop = -InlineDepthBottom
 981   };
 982 
 983   // Extra type information profiling gave us. We propagate it the
 984   // same way the rest of the type info is propagated. If we want to
 985   // use it, then we have to emit a guard: this part of the type is
 986   // not something we know but something we speculate about the type.
 987   const TypePtr*   _speculative;
 988   // For speculative types, we record at what inlining depth the
 989   // profiling point that provided the data is. We want to favor

1005   // utility methods to work on the inline depth of the type
1006   int dual_inline_depth() const;
1007   int meet_inline_depth(int depth) const;
1008 #ifndef PRODUCT
1009   void dump_inline_depth(outputStream *st) const;
1010 #endif
1011 
1012   // TypeInstPtr (TypeAryPtr resp.) and TypeInstKlassPtr (TypeAryKlassPtr resp.) implement very similar meet logic.
1013   // The logic for meeting 2 instances (2 arrays resp.) is shared in the 2 utility methods below. However the logic for
1014   // the oop and klass versions can be slightly different and extra logic may have to be executed depending on what
1015   // exact case the meet falls into. The MeetResult struct is used by the utility methods to communicate what case was
1016   // encountered so the right logic specific to klasses or oops can be executed.,
1017   enum MeetResult {
1018     QUICK,
1019     UNLOADED,
1020     SUBTYPE,
1021     NOT_SUBTYPE,
1022     LCA
1023   };
1024   template<class T> static TypePtr::MeetResult meet_instptr(PTR& ptr, const TypeInterfaces*& interfaces, const T* this_type,
1025                                                             const T* other_type, ciKlass*& res_klass, bool& res_xk, bool& res_flat_array);
1026 
1027   template<class T> static MeetResult meet_aryptr(PTR& ptr, const Type*& elem, const T* this_ary, const T* other_ary,
1028                                                   ciKlass*& res_klass, bool& res_xk, bool &res_flat, bool &res_not_flat, bool &res_not_null_free);
1029 
1030   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);
1031   template <class T1, class T2> static bool is_same_java_type_as_helper_for_instance(const T1* this_one, const T2* other);
1032   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);
1033   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);
1034   template <class T1, class T2> static bool is_same_java_type_as_helper_for_array(const T1* this_one, const T2* other);
1035   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);
1036   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);
1037   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);
1038 public:
1039   const Offset _offset;         // Offset into oop, with TOP & BOT
1040   const PTR _ptr;               // Pointer equivalence class
1041 
1042   int offset() const { return _offset.get(); }
1043   PTR ptr()    const { return _ptr; }
1044 
1045   static const TypePtr* make(TYPES t, PTR ptr, Offset offset,
1046                              const TypePtr* speculative = nullptr,
1047                              int inline_depth = InlineDepthBottom);
1048 
1049   // Return a 'ptr' version of this type
1050   virtual const TypePtr* cast_to_ptr_type(PTR ptr) const;
1051 
1052   virtual intptr_t get_con() const;
1053 
1054   Type::Offset xadd_offset(intptr_t offset) const;
1055   virtual const TypePtr* add_offset(intptr_t offset) const;
1056   virtual const TypePtr* with_offset(intptr_t offset) const;
1057   virtual int flat_offset() const { return offset(); }
1058   virtual bool eq(const Type *t) const;
1059   virtual uint hash() const;             // Type specific hashing
1060 
1061   virtual bool singleton(void) const;    // TRUE if type is a singleton
1062   virtual bool empty(void) const;        // TRUE if type is vacuous
1063   virtual const Type *xmeet( const Type *t ) const;
1064   virtual const Type *xmeet_helper( const Type *t ) const;
1065   Offset meet_offset(int offset) const;
1066   Offset dual_offset() const;
1067   virtual const Type *xdual() const;    // Compute dual right now.
1068 
1069   // meet, dual and join over pointer equivalence sets
1070   PTR meet_ptr( const PTR in_ptr ) const { return ptr_meet[in_ptr][ptr()]; }
1071   PTR dual_ptr()                   const { return ptr_dual[ptr()];      }
1072 
1073   // This is textually confusing unless one recalls that
1074   // join(t) == dual()->meet(t->dual())->dual().
1075   PTR join_ptr( const PTR in_ptr ) const {
1076     return ptr_dual[ ptr_meet[ ptr_dual[in_ptr] ] [ dual_ptr() ] ];
1077   }
1078 
1079   // Speculative type helper methods.
1080   virtual const TypePtr* speculative() const { return _speculative; }
1081   int inline_depth() const                   { return _inline_depth; }
1082   virtual ciKlass* speculative_type() const;
1083   virtual ciKlass* speculative_type_not_null() const;
1084   virtual bool speculative_maybe_null() const;
1085   virtual bool speculative_always_null() const;
1086   virtual const TypePtr* remove_speculative() const;
1087   virtual const Type* cleanup_speculative() const;
1088   virtual bool would_improve_type(ciKlass* exact_kls, int inline_depth) const;
1089   virtual bool would_improve_ptr(ProfilePtrKind maybe_null) const;
1090   virtual const TypePtr* with_inline_depth(int depth) const;
1091 
1092   virtual bool maybe_null() const { return meet_ptr(Null) == ptr(); }
1093 
1094   virtual bool can_be_inline_type() const { return false; }
1095   virtual bool flat_in_array()      const { return false; }
1096   virtual bool not_flat_in_array()  const { return false; }
1097   virtual bool is_flat()            const { return false; }
1098   virtual bool is_not_flat()        const { return false; }
1099   virtual bool is_null_free()       const { return false; }
1100   virtual bool is_not_null_free()   const { return false; }
1101 
1102   // Tests for relation to centerline of type lattice:
1103   static bool above_centerline(PTR ptr) { return (ptr <= AnyNull); }
1104   static bool below_centerline(PTR ptr) { return (ptr >= NotNull); }
1105   // Convenience common pre-built types.
1106   static const TypePtr *NULL_PTR;
1107   static const TypePtr *NOTNULL;
1108   static const TypePtr *BOTTOM;
1109 #ifndef PRODUCT
1110   virtual void dump2( Dict &d, uint depth, outputStream *st  ) const;
1111 #endif
1112 };
1113 
1114 //------------------------------TypeRawPtr-------------------------------------
1115 // Class of raw pointers, pointers to things other than Oops.  Examples
1116 // include the stack pointer, top of heap, card-marking area, handles, etc.
1117 class TypeRawPtr : public TypePtr {
1118 protected:
1119   TypeRawPtr(PTR ptr, address bits) : TypePtr(RawPtr,ptr,Offset(0)), _bits(bits){}
1120 public:
1121   virtual bool eq( const Type *t ) const;
1122   virtual uint hash() const;    // Type specific hashing
1123 
1124   const address _bits;          // Constant value, if applicable
1125 
1126   static const TypeRawPtr *make( PTR ptr );
1127   static const TypeRawPtr *make( address bits );
1128 
1129   // Return a 'ptr' version of this type
1130   virtual const TypeRawPtr* cast_to_ptr_type(PTR ptr) const;
1131 
1132   virtual intptr_t get_con() const;
1133 
1134   virtual const TypePtr* add_offset(intptr_t offset) const;
1135   virtual const TypeRawPtr* with_offset(intptr_t offset) const { ShouldNotReachHere(); return nullptr;}
1136 
1137   virtual const Type *xmeet( const Type *t ) const;
1138   virtual const Type *xdual() const;    // Compute dual right now.
1139   // Convenience common pre-built types.
1140   static const TypeRawPtr *BOTTOM;
1141   static const TypeRawPtr *NOTNULL;
1142 #ifndef PRODUCT
1143   virtual void dump2( Dict &d, uint depth, outputStream *st  ) const;
1144 #endif
1145 };
1146 
1147 //------------------------------TypeOopPtr-------------------------------------
1148 // Some kind of oop (Java pointer), either instance or array.
1149 class TypeOopPtr : public TypePtr {
1150   friend class TypeAry;
1151   friend class TypePtr;
1152   friend class TypeInstPtr;
1153   friend class TypeAryPtr;
1154 protected:
1155  TypeOopPtr(TYPES t, PTR ptr, ciKlass* k, const TypeInterfaces* interfaces, bool xk, ciObject* o, Offset offset, Offset field_offset, int instance_id,
1156             const TypePtr* speculative, int inline_depth);
1157 public:
1158   virtual bool eq( const Type *t ) const;
1159   virtual uint hash() const;             // Type specific hashing
1160   virtual bool singleton(void) const;    // TRUE if type is a singleton
1161   enum {
1162    InstanceTop = -1,   // undefined instance
1163    InstanceBot = 0     // any possible instance
1164   };
1165 protected:
1166 
1167   // Oop is null, unless this is a constant oop.
1168   ciObject*     _const_oop;   // Constant oop
1169   // If _klass is null, then so is _sig.  This is an unloaded klass.
1170   ciKlass*      _klass;       // Klass object
1171 
1172   const TypeInterfaces* _interfaces;
1173 
1174   // Does the type exclude subclasses of the klass?  (Inexact == polymorphic.)
1175   bool          _klass_is_exact;
1176   bool          _is_ptr_to_narrowoop;
1177   bool          _is_ptr_to_narrowklass;
1178   bool          _is_ptr_to_boxed_value;
1179 
1180   // If not InstanceTop or InstanceBot, indicates that this is
1181   // a particular instance of this type which is distinct.
1182   // This is the node index of the allocation node creating this instance.
1183   int           _instance_id;
1184 
1185   static const TypeOopPtr* make_from_klass_common(ciKlass* klass, bool klass_change, bool try_for_exact, InterfaceHandling interface_handling);
1186 
1187   int dual_instance_id() const;
1188   int meet_instance_id(int uid) const;
1189 
1190   const TypeInterfaces* meet_interfaces(const TypeOopPtr* other) const;
1191 
1192   // Do not allow interface-vs.-noninterface joins to collapse to top.
1193   virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
1194 
1195   virtual ciKlass* exact_klass_helper() const { return nullptr; }
1196   virtual ciKlass* klass() const { return _klass; }
1197 
1198 public:
1199 
1200   bool is_java_subtype_of(const TypeOopPtr* other) const {
1201     return is_java_subtype_of_helper(other, klass_is_exact(), other->klass_is_exact());
1202   }
1203 
1204   bool is_same_java_type_as(const TypePtr* other) const {
1205     return is_same_java_type_as_helper(other->is_oopptr());
1206   }
1207 
1208   virtual bool is_same_java_type_as_helper(const TypeOopPtr* other) const {
1209     ShouldNotReachHere(); return false;
1210   }
1211 
1212   bool maybe_java_subtype_of(const TypeOopPtr* other) const {
1213     return maybe_java_subtype_of_helper(other, klass_is_exact(), other->klass_is_exact());
1214   }
1215   virtual bool is_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const { ShouldNotReachHere(); return false; }
1216   virtual bool maybe_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const { ShouldNotReachHere(); return false; }

1223     return make_from_klass_common(klass, true, false, interface_handling);
1224   }
1225   // Same as before, but will produce an exact type, even if
1226   // the klass is not final, as long as it has exactly one implementation.
1227   static const TypeOopPtr* make_from_klass_unique(ciKlass* klass, InterfaceHandling interface_handling= ignore_interfaces) {
1228     return make_from_klass_common(klass, true, true, interface_handling);
1229   }
1230   // Same as before, but does not respects UseUniqueSubclasses.
1231   // Use this only for creating array element types.
1232   static const TypeOopPtr* make_from_klass_raw(ciKlass* klass, InterfaceHandling interface_handling = ignore_interfaces) {
1233     return make_from_klass_common(klass, false, false, interface_handling);
1234   }
1235   // Creates a singleton type given an object.
1236   // If the object cannot be rendered as a constant,
1237   // may return a non-singleton type.
1238   // If require_constant, produce a null if a singleton is not possible.
1239   static const TypeOopPtr* make_from_constant(ciObject* o,
1240                                               bool require_constant = false);
1241 
1242   // Make a generic (unclassed) pointer to an oop.
1243   static const TypeOopPtr* make(PTR ptr, Offset offset, int instance_id,
1244                                 const TypePtr* speculative = nullptr,
1245                                 int inline_depth = InlineDepthBottom);
1246 
1247   ciObject* const_oop()    const { return _const_oop; }
1248   // Exact klass, possibly an interface or an array of interface
1249   ciKlass* exact_klass(bool maybe_null = false) const { assert(klass_is_exact(), ""); ciKlass* k = exact_klass_helper(); assert(k != nullptr || maybe_null, ""); return k;  }
1250   ciKlass* unloaded_klass() const { assert(!is_loaded(), "only for unloaded types"); return klass(); }
1251 
1252   virtual bool  is_loaded() const { return klass()->is_loaded(); }
1253   virtual bool klass_is_exact()    const { return _klass_is_exact; }
1254 
1255   // Returns true if this pointer points at memory which contains a
1256   // compressed oop references.
1257   bool is_ptr_to_narrowoop_nv() const { return _is_ptr_to_narrowoop; }
1258   bool is_ptr_to_narrowklass_nv() const { return _is_ptr_to_narrowklass; }
1259   bool is_ptr_to_boxed_value()   const { return _is_ptr_to_boxed_value; }
1260   bool is_known_instance()       const { return _instance_id > 0; }
1261   int  instance_id()             const { return _instance_id; }
1262   bool is_known_instance_field() const { return is_known_instance() && _offset.get() >= 0; }
1263 
1264   virtual bool can_be_inline_type() const { return (_klass == nullptr || _klass->can_be_inline_klass(_klass_is_exact)); }
1265   virtual bool can_be_inline_array() const { ShouldNotReachHere(); return false; }
1266 
1267   virtual intptr_t get_con() const;
1268 
1269   virtual const TypeOopPtr* cast_to_ptr_type(PTR ptr) const;
1270 
1271   virtual const TypeOopPtr* cast_to_exactness(bool klass_is_exact) const;
1272 
1273   virtual const TypeOopPtr *cast_to_instance_id(int instance_id) const;
1274 
1275   // corresponding pointer to klass, for a given instance
1276   virtual const TypeKlassPtr* as_klass_type(bool try_for_exact = false) const;
1277 
1278   virtual const TypeOopPtr* with_offset(intptr_t offset) const;
1279   virtual const TypePtr* add_offset(intptr_t offset) const;
1280 
1281   // Speculative type helper methods.
1282   virtual const TypeOopPtr* remove_speculative() const;
1283   virtual const Type* cleanup_speculative() const;
1284   virtual bool would_improve_type(ciKlass* exact_kls, int inline_depth) const;
1285   virtual const TypePtr* with_inline_depth(int depth) const;

1308     return _interfaces;
1309   };
1310 
1311   const TypeOopPtr* is_reference_type(const Type* other) const {
1312     return other->isa_oopptr();
1313   }
1314 
1315   const TypeAryPtr* is_array_type(const TypeOopPtr* other) const {
1316     return other->isa_aryptr();
1317   }
1318 
1319   const TypeInstPtr* is_instance_type(const TypeOopPtr* other) const {
1320     return other->isa_instptr();
1321   }
1322 };
1323 
1324 //------------------------------TypeInstPtr------------------------------------
1325 // Class of Java object pointers, pointing either to non-array Java instances
1326 // or to a Klass* (including array klasses).
1327 class TypeInstPtr : public TypeOopPtr {
1328   TypeInstPtr(PTR ptr, ciKlass* k, const TypeInterfaces* interfaces, bool xk, ciObject* o, Offset offset,
1329               bool flat_in_array, int instance_id, const TypePtr* speculative,
1330               int inline_depth);
1331   virtual bool eq( const Type *t ) const;
1332   virtual uint hash() const;             // Type specific hashing
1333   bool _flat_in_array; // Type is flat in arrays
1334   ciKlass* exact_klass_helper() const;
1335 
1336 public:
1337 
1338   // Instance klass, ignoring any interface
1339   ciInstanceKlass* instance_klass() const {
1340     assert(!(klass()->is_loaded() && klass()->is_interface()), "");
1341     return klass()->as_instance_klass();
1342   }
1343 
1344   bool is_same_java_type_as_helper(const TypeOopPtr* other) const;
1345   bool is_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const;
1346   bool maybe_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const;
1347 
1348   // Make a pointer to a constant oop.
1349   static const TypeInstPtr *make(ciObject* o) {
1350     ciKlass* k = o->klass();
1351     const TypeInterfaces* interfaces = TypePtr::interfaces(k, true, false, false, ignore_interfaces);
1352     return make(TypePtr::Constant, k, interfaces, true, o, Offset(0));
1353   }
1354   // Make a pointer to a constant oop with offset.
1355   static const TypeInstPtr *make(ciObject* o, Offset offset) {
1356     ciKlass* k = o->klass();
1357     const TypeInterfaces* interfaces = TypePtr::interfaces(k, true, false, false, ignore_interfaces);
1358     return make(TypePtr::Constant, k, interfaces, true, o, offset);
1359   }
1360 
1361   // Make a pointer to some value of type klass.
1362   static const TypeInstPtr *make(PTR ptr, ciKlass* klass, InterfaceHandling interface_handling = ignore_interfaces) {
1363     const TypeInterfaces* interfaces = TypePtr::interfaces(klass, true, true, false, interface_handling);
1364     return make(ptr, klass, interfaces, false, nullptr, Offset(0));
1365   }
1366 
1367   // Make a pointer to some non-polymorphic value of exactly type klass.
1368   static const TypeInstPtr *make_exact(PTR ptr, ciKlass* klass) {
1369     const TypeInterfaces* interfaces = TypePtr::interfaces(klass, true, false, false, ignore_interfaces);
1370     return make(ptr, klass, interfaces, true, nullptr, Offset(0));
1371   }
1372 
1373   // Make a pointer to some value of type klass with offset.
1374   static const TypeInstPtr *make(PTR ptr, ciKlass* klass, Offset offset) {
1375     const TypeInterfaces* interfaces = TypePtr::interfaces(klass, true, false, false, ignore_interfaces);
1376     return make(ptr, klass, interfaces, false, nullptr, offset);
1377   }
1378 
1379   // Make a pointer to an oop.
1380   static const TypeInstPtr* make(PTR ptr, ciKlass* k, const TypeInterfaces* interfaces, bool xk, ciObject* o, Offset offset,
1381                                  bool flat_in_array = false,
1382                                  int instance_id = InstanceBot,
1383                                  const TypePtr* speculative = nullptr,
1384                                  int inline_depth = InlineDepthBottom);
1385 
1386   static const TypeInstPtr *make(PTR ptr, ciKlass* k, bool xk, ciObject* o, Offset offset, int instance_id = InstanceBot) {
1387     const TypeInterfaces* interfaces = TypePtr::interfaces(k, true, false, false, ignore_interfaces);
1388     return make(ptr, k, interfaces, xk, o, offset, false, instance_id);
1389   }
1390 
1391   /** Create constant type for a constant boxed value */
1392   const Type* get_const_boxed_value() const;
1393 
1394   // If this is a java.lang.Class constant, return the type for it or null.
1395   // Pass to Type::get_const_type to turn it to a type, which will usually
1396   // be a TypeInstPtr, but may also be a TypeInt::INT for int.class, etc.
1397   ciType* java_mirror_type() const;
1398 
1399   virtual const TypeInstPtr* cast_to_ptr_type(PTR ptr) const;
1400 
1401   virtual const TypeInstPtr* cast_to_exactness(bool klass_is_exact) const;
1402 
1403   virtual const TypeInstPtr* cast_to_instance_id(int instance_id) const;
1404 
1405   virtual const TypePtr* add_offset(intptr_t offset) const;
1406   virtual const TypeInstPtr* with_offset(intptr_t offset) const;
1407 
1408   // Speculative type helper methods.
1409   virtual const TypeInstPtr* remove_speculative() const;
1410   virtual const TypePtr* with_inline_depth(int depth) const;
1411   virtual const TypePtr* with_instance_id(int instance_id) const;
1412 
1413   virtual const TypeInstPtr* cast_to_flat_in_array() const;
1414   virtual bool flat_in_array() const { return _flat_in_array; }
1415   virtual bool not_flat_in_array() const { return !can_be_inline_type() || (_klass->is_inlinetype() && !flat_in_array()); }
1416 
1417   // the core of the computation of the meet of 2 types
1418   virtual const Type *xmeet_helper(const Type *t) const;
1419   virtual const TypeInstPtr *xmeet_unloaded(const TypeInstPtr *tinst, const TypeInterfaces* interfaces) const;
1420   virtual const Type *xdual() const;    // Compute dual right now.
1421 
1422   const TypeKlassPtr* as_klass_type(bool try_for_exact = false) const;
1423 
1424   virtual bool can_be_inline_array() const;
1425 
1426   // Convenience common pre-built types.
1427   static const TypeInstPtr *NOTNULL;
1428   static const TypeInstPtr *BOTTOM;
1429   static const TypeInstPtr *MIRROR;
1430   static const TypeInstPtr *MARK;
1431   static const TypeInstPtr *KLASS;
1432 #ifndef PRODUCT
1433   virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
1434 #endif
1435 
1436 private:
1437   virtual bool is_meet_subtype_of_helper(const TypeOopPtr* other, bool this_xk, bool other_xk) const;
1438 
1439   virtual bool is_meet_same_type_as(const TypePtr* other) const {
1440     return _klass->equals(other->is_instptr()->_klass) && _interfaces->eq(other->is_instptr()->_interfaces);
1441   }
1442 
1443 };
1444 
1445 //------------------------------TypeAryPtr-------------------------------------
1446 // Class of Java array pointers
1447 class TypeAryPtr : public TypeOopPtr {
1448   friend class Type;
1449   friend class TypePtr;
1450   friend class TypeInstPtr;
1451 
1452   TypeAryPtr(PTR ptr, ciObject* o, const TypeAry *ary, ciKlass* k, bool xk,
1453              Offset offset, Offset field_offset, int instance_id, bool is_autobox_cache,
1454              const TypePtr* speculative, int inline_depth)
1455     : TypeOopPtr(AryPtr, ptr, k, _array_interfaces, xk, o, offset, field_offset, instance_id, speculative, inline_depth),
1456     _ary(ary),
1457     _is_autobox_cache(is_autobox_cache),
1458     _field_offset(field_offset)
1459  {
1460     int dummy;
1461     bool top_or_bottom = (base_element_type(dummy) == Type::TOP || base_element_type(dummy) == Type::BOTTOM);
1462 
1463     if (UseCompressedOops && (elem()->make_oopptr() != nullptr && !top_or_bottom) &&
1464         _offset.get() != 0 && _offset.get() != arrayOopDesc::length_offset_in_bytes() &&
1465         _offset.get() != arrayOopDesc::klass_offset_in_bytes()) {
1466       _is_ptr_to_narrowoop = true;
1467     }
1468 
1469   }
1470   virtual bool eq( const Type *t ) const;
1471   virtual uint hash() const;    // Type specific hashing
1472   const TypeAry *_ary;          // Array we point into
1473   const bool     _is_autobox_cache;
1474   // For flat inline type arrays, each field of the inline type in
1475   // the array has its own memory slice so we need to keep track of
1476   // which field is accessed
1477   const Offset _field_offset;
1478   Offset meet_field_offset(const Type::Offset offset) const;
1479   Offset dual_field_offset() const;
1480 
1481   ciKlass* compute_klass(DEBUG_ONLY(bool verify = false)) const;
1482 
1483   // A pointer to delay allocation to Type::Initialize_shared()
1484 
1485   static const TypeInterfaces* _array_interfaces;
1486   ciKlass* exact_klass_helper() const;
1487   // Only guaranteed non null for array of basic types
1488   ciKlass* klass() const;
1489 
1490 public:
1491 
1492   bool is_same_java_type_as_helper(const TypeOopPtr* other) const;
1493   bool is_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const;
1494   bool maybe_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const;
1495 
1496   // returns base element type, an instance klass (and not interface) for object arrays
1497   const Type* base_element_type(int& dims) const;
1498 
1499   // Accessors
1500   bool  is_loaded() const { return (_ary->_elem->make_oopptr() ? _ary->_elem->make_oopptr()->is_loaded() : true); }
1501 
1502   const TypeAry* ary() const  { return _ary; }
1503   const Type*    elem() const { return _ary->_elem; }
1504   const TypeInt* size() const { return _ary->_size; }
1505   bool      is_stable() const { return _ary->_stable; }
1506 
1507   // Inline type array properties
1508   bool is_flat()          const { return _ary->_flat; }
1509   bool is_not_flat()      const { return _ary->_not_flat; }
1510   bool is_null_free()     const { return is_flat() || (_ary->_elem->make_ptr() != nullptr && _ary->_elem->make_ptr()->is_inlinetypeptr() && (_ary->_elem->make_ptr()->ptr() == NotNull || _ary->_elem->make_ptr()->ptr() == AnyNull)); }
1511   bool is_not_null_free() const { return _ary->_not_null_free; }
1512 
1513   bool is_autobox_cache() const { return _is_autobox_cache; }
1514 
1515   static const TypeAryPtr* make(PTR ptr, const TypeAry *ary, ciKlass* k, bool xk, Offset offset,
1516                                 Offset field_offset = Offset::bottom,
1517                                 int instance_id = InstanceBot,
1518                                 const TypePtr* speculative = nullptr,
1519                                 int inline_depth = InlineDepthBottom);
1520   // Constant pointer to array
1521   static const TypeAryPtr* make(PTR ptr, ciObject* o, const TypeAry *ary, ciKlass* k, bool xk, Offset offset,
1522                                 Offset field_offset = Offset::bottom,
1523                                 int instance_id = InstanceBot,
1524                                 const TypePtr* speculative = nullptr,
1525                                 int inline_depth = InlineDepthBottom,
1526                                 bool is_autobox_cache = false);
1527 
1528   // Return a 'ptr' version of this type
1529   virtual const TypeAryPtr* cast_to_ptr_type(PTR ptr) const;
1530 
1531   virtual const TypeAryPtr* cast_to_exactness(bool klass_is_exact) const;
1532 
1533   virtual const TypeAryPtr* cast_to_instance_id(int instance_id) const;
1534 
1535   virtual const TypeAryPtr* cast_to_size(const TypeInt* size) const;
1536   virtual const TypeInt* narrow_size_type(const TypeInt* size) const;
1537 
1538   virtual bool empty(void) const;        // TRUE if type is vacuous
1539   virtual const TypePtr *add_offset( intptr_t offset ) const;
1540   virtual const TypeAryPtr *with_offset( intptr_t offset ) const;
1541   const TypeAryPtr* with_ary(const TypeAry* ary) const;
1542 
1543   // Speculative type helper methods.
1544   virtual const TypeAryPtr* remove_speculative() const;
1545   virtual const Type* cleanup_speculative() const;
1546   virtual const TypePtr* with_inline_depth(int depth) const;
1547   virtual const TypePtr* with_instance_id(int instance_id) const;
1548 
1549   // the core of the computation of the meet of 2 types
1550   virtual const Type *xmeet_helper(const Type *t) const;
1551   virtual const Type *xdual() const;    // Compute dual right now.
1552 
1553   // Inline type array properties
1554   const TypeAryPtr* cast_to_not_flat(bool not_flat = true) const;
1555   const TypeAryPtr* cast_to_not_null_free(bool not_null_free = true) const;
1556   const TypeAryPtr* update_properties(const TypeAryPtr* new_type) const;
1557   jint flat_layout_helper() const;
1558   int flat_elem_size() const;
1559   int flat_log_elem_size() const;
1560 
1561   const TypeAryPtr* cast_to_stable(bool stable, int stable_dimension = 1) const;
1562   int stable_dimension() const;
1563 
1564   const TypeAryPtr* cast_to_autobox_cache() const;
1565 
1566   static jint max_array_length(BasicType etype);
1567 
1568   int flat_offset() const;
1569   const Offset field_offset() const { return _field_offset; }
1570   const TypeAryPtr* with_field_offset(int offset) const;
1571   const TypePtr* add_field_offset_and_offset(intptr_t offset) const;
1572 
1573   virtual bool can_be_inline_type() const { return false; }
1574   virtual const TypeKlassPtr* as_klass_type(bool try_for_exact = false) const;
1575 
1576   virtual bool can_be_inline_array() const;
1577 
1578   // Convenience common pre-built types.
1579   static const TypeAryPtr *RANGE;
1580   static const TypeAryPtr *OOPS;
1581   static const TypeAryPtr *NARROWOOPS;
1582   static const TypeAryPtr *BYTES;
1583   static const TypeAryPtr *SHORTS;
1584   static const TypeAryPtr *CHARS;
1585   static const TypeAryPtr *INTS;
1586   static const TypeAryPtr *LONGS;
1587   static const TypeAryPtr *FLOATS;
1588   static const TypeAryPtr *DOUBLES;
1589   static const TypeAryPtr *INLINES;
1590   // selects one of the above:
1591   static const TypeAryPtr *get_array_body_type(BasicType elem) {
1592     assert((uint)elem <= T_CONFLICT && _array_body_type[elem] != nullptr, "bad elem type");
1593     return _array_body_type[elem];
1594   }
1595   static const TypeAryPtr *_array_body_type[T_CONFLICT+1];
1596   // sharpen the type of an int which is used as an array size
1597 #ifndef PRODUCT
1598   virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
1599 #endif
1600 private:
1601   virtual bool is_meet_subtype_of_helper(const TypeOopPtr* other, bool this_xk, bool other_xk) const;
1602 };
1603 
1604 //------------------------------TypeMetadataPtr-------------------------------------
1605 // Some kind of metadata, either Method*, MethodData* or CPCacheOop
1606 class TypeMetadataPtr : public TypePtr {
1607 protected:
1608   TypeMetadataPtr(PTR ptr, ciMetadata* metadata, Offset offset);
1609   // Do not allow interface-vs.-noninterface joins to collapse to top.
1610   virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
1611 public:
1612   virtual bool eq( const Type *t ) const;
1613   virtual uint hash() const;             // Type specific hashing
1614   virtual bool singleton(void) const;    // TRUE if type is a singleton
1615 
1616 private:
1617   ciMetadata*   _metadata;
1618 
1619 public:
1620   static const TypeMetadataPtr* make(PTR ptr, ciMetadata* m, Offset offset);
1621 
1622   static const TypeMetadataPtr* make(ciMethod* m);
1623   static const TypeMetadataPtr* make(ciMethodData* m);
1624 
1625   ciMetadata* metadata() const { return _metadata; }
1626 
1627   virtual const TypeMetadataPtr* cast_to_ptr_type(PTR ptr) const;
1628 
1629   virtual const TypePtr *add_offset( intptr_t offset ) const;
1630 
1631   virtual const Type *xmeet( const Type *t ) const;
1632   virtual const Type *xdual() const;    // Compute dual right now.
1633 
1634   virtual intptr_t get_con() const;
1635 
1636   // Convenience common pre-built types.
1637   static const TypeMetadataPtr *BOTTOM;
1638 
1639 #ifndef PRODUCT
1640   virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
1641 #endif
1642 };
1643 
1644 //------------------------------TypeKlassPtr-----------------------------------
1645 // Class of Java Klass pointers
1646 class TypeKlassPtr : public TypePtr {
1647   friend class TypeInstKlassPtr;
1648   friend class TypeAryKlassPtr;
1649   friend class TypePtr;
1650 protected:
1651   TypeKlassPtr(TYPES t, PTR ptr, ciKlass* klass, const TypeInterfaces* interfaces, Offset offset);
1652 
1653   virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
1654 
1655 public:
1656   virtual bool eq( const Type *t ) const;
1657   virtual uint hash() const;
1658   virtual bool singleton(void) const;    // TRUE if type is a singleton
1659 
1660 protected:
1661 
1662   ciKlass* _klass;
1663   const TypeInterfaces* _interfaces;
1664   const TypeInterfaces* meet_interfaces(const TypeKlassPtr* other) const;
1665   virtual bool must_be_exact() const { ShouldNotReachHere(); return false; }
1666   virtual ciKlass* exact_klass_helper() const;
1667   virtual ciKlass* klass() const { return  _klass; }
1668 
1669 public:
1670 
1671   bool is_java_subtype_of(const TypeKlassPtr* other) const {
1672     return is_java_subtype_of_helper(other, klass_is_exact(), other->klass_is_exact());
1673   }
1674   bool is_same_java_type_as(const TypePtr* other) const {
1675     return is_same_java_type_as_helper(other->is_klassptr());
1676   }
1677 
1678   bool maybe_java_subtype_of(const TypeKlassPtr* other) const {
1679     return maybe_java_subtype_of_helper(other, klass_is_exact(), other->klass_is_exact());
1680   }
1681   virtual bool is_same_java_type_as_helper(const TypeKlassPtr* other) const { ShouldNotReachHere(); return false; }
1682   virtual bool is_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const { ShouldNotReachHere(); return false; }
1683   virtual bool maybe_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const { ShouldNotReachHere(); return false; }
1684 
1685   // Exact klass, possibly an interface or an array of interface
1686   ciKlass* exact_klass(bool maybe_null = false) const { assert(klass_is_exact(), ""); ciKlass* k = exact_klass_helper(); assert(k != nullptr || maybe_null, ""); return k;  }
1687   virtual bool klass_is_exact()    const { return _ptr == Constant; }
1688 
1689   static const TypeKlassPtr* make(ciKlass* klass, InterfaceHandling interface_handling = ignore_interfaces);
1690   static const TypeKlassPtr *make(PTR ptr, ciKlass* klass, Offset offset, InterfaceHandling interface_handling = ignore_interfaces);
1691 
1692   virtual bool  is_loaded() const { return _klass->is_loaded(); }
1693 
1694   virtual const TypeKlassPtr* cast_to_ptr_type(PTR ptr) const { ShouldNotReachHere(); return nullptr; }
1695 
1696   virtual const TypeKlassPtr *cast_to_exactness(bool klass_is_exact) const { ShouldNotReachHere(); return nullptr; }
1697 
1698   // corresponding pointer to instance, for a given class
1699   virtual const TypeOopPtr* as_instance_type(bool klass_change = true) const { ShouldNotReachHere(); return nullptr; }
1700 
1701   virtual const TypePtr *add_offset( intptr_t offset ) const { ShouldNotReachHere(); return nullptr; }
1702   virtual const Type    *xmeet( const Type *t ) const { ShouldNotReachHere(); return nullptr; }
1703   virtual const Type    *xdual() const { ShouldNotReachHere(); return nullptr; }
1704 
1705   virtual intptr_t get_con() const;
1706 
1707   virtual const TypeKlassPtr* with_offset(intptr_t offset) const { ShouldNotReachHere(); return nullptr; }
1708 
1709   virtual bool can_be_inline_array() const { ShouldNotReachHere(); return false; }
1710   virtual const TypeKlassPtr* try_improve() const { return this; }
1711 
1712 #ifndef PRODUCT
1713   virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
1714 #endif
1715 private:
1716   virtual bool is_meet_subtype_of(const TypePtr* other) const {
1717     return is_meet_subtype_of_helper(other->is_klassptr(), klass_is_exact(), other->is_klassptr()->klass_is_exact());
1718   }
1719 
1720   virtual bool is_meet_subtype_of_helper(const TypeKlassPtr* other, bool this_xk, bool other_xk) const {
1721     ShouldNotReachHere(); return false;
1722   }
1723 
1724   virtual const TypeInterfaces* interfaces() const {
1725     return _interfaces;
1726   };
1727 
1728   const TypeKlassPtr* is_reference_type(const Type* other) const {
1729     return other->isa_klassptr();
1730   }
1731 
1732   const TypeAryKlassPtr* is_array_type(const TypeKlassPtr* other) const {
1733     return other->isa_aryklassptr();
1734   }
1735 
1736   const TypeInstKlassPtr* is_instance_type(const TypeKlassPtr* other) const {
1737     return other->isa_instklassptr();
1738   }
1739 };
1740 
1741 // Instance klass pointer, mirrors TypeInstPtr
1742 class TypeInstKlassPtr : public TypeKlassPtr {
1743 
1744   TypeInstKlassPtr(PTR ptr, ciKlass* klass, const TypeInterfaces* interfaces, Offset offset, bool flat_in_array)
1745     : TypeKlassPtr(InstKlassPtr, ptr, klass, interfaces, offset), _flat_in_array(flat_in_array) {
1746     assert(klass->is_instance_klass() && (!klass->is_loaded() || !klass->is_interface()), "");
1747   }
1748 
1749   virtual bool must_be_exact() const;
1750 
1751   const bool _flat_in_array; // Type is flat in arrays
1752 
1753 public:
1754   // Instance klass ignoring any interface
1755   ciInstanceKlass* instance_klass() const {
1756     assert(!klass()->is_interface(), "");
1757     return klass()->as_instance_klass();
1758   }
1759 
1760   bool is_same_java_type_as_helper(const TypeKlassPtr* other) const;
1761   bool is_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const;
1762   bool maybe_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const;
1763 
1764   virtual bool can_be_inline_type() const { return (_klass == nullptr || _klass->can_be_inline_klass(klass_is_exact())); }
1765 
1766   static const TypeInstKlassPtr *make(ciKlass* k, InterfaceHandling interface_handling) {
1767     const TypeInterfaces* interfaces = TypePtr::interfaces(k, true, true, false, interface_handling);
1768     return make(TypePtr::Constant, k, interfaces, Offset(0));
1769   }
1770   static const TypeInstKlassPtr* make(PTR ptr, ciKlass* k, const TypeInterfaces* interfaces, Offset offset, bool flat_in_array = false);
1771 
1772   static const TypeInstKlassPtr* make(PTR ptr, ciKlass* k, Offset offset) {
1773     const TypeInterfaces* interfaces = TypePtr::interfaces(k, true, false, false, ignore_interfaces);
1774     return make(ptr, k, interfaces, offset);
1775   }
1776 
1777   virtual const TypeInstKlassPtr* cast_to_ptr_type(PTR ptr) const;
1778 
1779   virtual const TypeKlassPtr *cast_to_exactness(bool klass_is_exact) const;
1780 
1781   // corresponding pointer to instance, for a given class
1782   virtual const TypeOopPtr* as_instance_type(bool klass_change = true) const;
1783   virtual uint hash() const;
1784   virtual bool eq(const Type *t) const;
1785 
1786   virtual const TypePtr *add_offset( intptr_t offset ) const;
1787   virtual const Type    *xmeet( const Type *t ) const;
1788   virtual const Type    *xdual() const;
1789   virtual const TypeInstKlassPtr* with_offset(intptr_t offset) const;
1790 
1791   virtual const TypeKlassPtr* try_improve() const;
1792 
1793   virtual bool flat_in_array() const { return _flat_in_array; }
1794   virtual bool not_flat_in_array() const { return !_klass->can_be_inline_klass() || (_klass->is_inlinetype() && !flat_in_array()); }
1795 
1796   virtual bool can_be_inline_array() const;
1797 
1798   // Convenience common pre-built types.
1799   static const TypeInstKlassPtr* OBJECT; // Not-null object klass or below
1800   static const TypeInstKlassPtr* OBJECT_OR_NULL; // Maybe-null version of same
1801 private:
1802   virtual bool is_meet_subtype_of_helper(const TypeKlassPtr* other, bool this_xk, bool other_xk) const;
1803 };
1804 
1805 // Array klass pointer, mirrors TypeAryPtr
1806 class TypeAryKlassPtr : public TypeKlassPtr {
1807   friend class TypeInstKlassPtr;
1808   friend class Type;
1809   friend class TypePtr;
1810 
1811   const Type *_elem;
1812   const bool _not_flat;      // Array is never flat
1813   const bool _not_null_free; // Array is never null-free
1814   const bool _null_free;
1815 
1816   static const TypeInterfaces* _array_interfaces;
1817   TypeAryKlassPtr(PTR ptr, const Type *elem, ciKlass* klass, Offset offset, bool not_flat, int not_null_free, bool null_free)
1818     : TypeKlassPtr(AryKlassPtr, ptr, klass, _array_interfaces, offset), _elem(elem), _not_flat(not_flat), _not_null_free(not_null_free), _null_free(null_free) {
1819     assert(klass == nullptr || klass->is_type_array_klass() || klass->is_flat_array_klass() || !klass->as_obj_array_klass()->base_element_klass()->is_interface(), "");
1820   }
1821 
1822   virtual ciKlass* exact_klass_helper() const;
1823   // Only guaranteed non null for array of basic types
1824   virtual ciKlass* klass() const;
1825 
1826   virtual bool must_be_exact() const;
1827 
1828   bool dual_null_free() const {
1829     return _null_free;
1830   }
1831 
1832   bool meet_null_free(bool other) const {
1833     return _null_free && other;
1834   }
1835 
1836 public:
1837 
1838   // returns base element type, an instance klass (and not interface) for object arrays
1839   const Type* base_element_type(int& dims) const;
1840 
1841   static const TypeAryKlassPtr* make(PTR ptr, ciKlass* k, Offset offset, InterfaceHandling interface_handling, bool not_flat, bool not_null_free, bool null_free);
1842 
1843   bool is_same_java_type_as_helper(const TypeKlassPtr* other) const;
1844   bool is_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const;
1845   bool maybe_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const;
1846 
1847   bool  is_loaded() const { return (_elem->isa_klassptr() ? _elem->is_klassptr()->is_loaded() : true); }
1848 
1849   static const TypeAryKlassPtr* make(PTR ptr, const Type* elem, ciKlass* k, Offset offset, bool not_flat, bool not_null_free, bool null_free);
1850   static const TypeAryKlassPtr* make(PTR ptr, ciKlass* k, Offset offset, InterfaceHandling interface_handling);
1851   static const TypeAryKlassPtr* make(ciKlass* klass, InterfaceHandling interface_handling);
1852 
1853   const Type *elem() const { return _elem; }
1854 
1855   virtual bool eq(const Type *t) const;
1856   virtual uint hash() const;             // Type specific hashing
1857 
1858   virtual const TypeAryKlassPtr* cast_to_ptr_type(PTR ptr) const;
1859 
1860   virtual const TypeKlassPtr *cast_to_exactness(bool klass_is_exact) const;
1861 
1862   const TypeAryKlassPtr* cast_to_null_free() const;
1863 
1864   // corresponding pointer to instance, for a given class
1865   virtual const TypeOopPtr* as_instance_type(bool klass_change = true) const;
1866 
1867   virtual const TypePtr *add_offset( intptr_t offset ) const;
1868   virtual const Type    *xmeet( const Type *t ) const;
1869   virtual const Type    *xdual() const;      // Compute dual right now.
1870 
1871   virtual const TypeAryKlassPtr* with_offset(intptr_t offset) const;
1872 
1873   virtual bool empty(void) const {
1874     return TypeKlassPtr::empty() || _elem->empty();
1875   }
1876 
1877   bool is_flat()          const { return klass() != nullptr && klass()->is_flat_array_klass(); }
1878   bool is_not_flat()      const { return _not_flat; }
1879   bool is_null_free()     const { return _null_free; }
1880   bool is_not_null_free() const { return _not_null_free; }
1881   virtual bool can_be_inline_array() const;
1882 
1883 #ifndef PRODUCT
1884   virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
1885 #endif
1886 private:
1887   virtual bool is_meet_subtype_of_helper(const TypeKlassPtr* other, bool this_xk, bool other_xk) const;
1888 };
1889 
1890 class TypeNarrowPtr : public Type {
1891 protected:
1892   const TypePtr* _ptrtype; // Could be TypePtr::NULL_PTR
1893 
1894   TypeNarrowPtr(TYPES t, const TypePtr* ptrtype): Type(t),
1895                                                   _ptrtype(ptrtype) {
1896     assert(ptrtype->offset() == 0 ||
1897            ptrtype->offset() == OffsetBot ||
1898            ptrtype->offset() == OffsetTop, "no real offsets");
1899   }
1900 
1901   virtual const TypeNarrowPtr *isa_same_narrowptr(const Type *t) const = 0;
1902   virtual const TypeNarrowPtr *is_same_narrowptr(const Type *t) const = 0;

1998   }
1999 
2000   virtual const TypeNarrowPtr *make_hash_same_narrowptr(const TypePtr *t) const {
2001     return (const TypeNarrowPtr*)((new TypeNarrowKlass(t))->hashcons());
2002   }
2003 
2004 public:
2005   static const TypeNarrowKlass *make( const TypePtr* type);
2006 
2007   // static const TypeNarrowKlass *BOTTOM;
2008   static const TypeNarrowKlass *NULL_PTR;
2009 
2010 #ifndef PRODUCT
2011   virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
2012 #endif
2013 };
2014 
2015 //------------------------------TypeFunc---------------------------------------
2016 // Class of Array Types
2017 class TypeFunc : public Type {
2018   TypeFunc(const TypeTuple *domain_sig, const TypeTuple *domain_cc, const TypeTuple *range_sig, const TypeTuple *range_cc)
2019     : Type(Function), _domain_sig(domain_sig), _domain_cc(domain_cc), _range_sig(range_sig), _range_cc(range_cc) {}
2020   virtual bool eq( const Type *t ) const;
2021   virtual uint hash() const;             // Type specific hashing
2022   virtual bool singleton(void) const;    // TRUE if type is a singleton
2023   virtual bool empty(void) const;        // TRUE if type is vacuous
2024 
2025   // Domains of inputs: inline type arguments are not passed by
2026   // reference, instead each field of the inline type is passed as an
2027   // argument. We maintain 2 views of the argument list here: one
2028   // based on the signature (with an inline type argument as a single
2029   // slot), one based on the actual calling convention (with a value
2030   // type argument as a list of its fields).
2031   const TypeTuple* const _domain_sig;
2032   const TypeTuple* const _domain_cc;
2033   // Range of results. Similar to domains: an inline type result can be
2034   // returned in registers in which case range_cc lists all fields and
2035   // is the actual calling convention.
2036   const TypeTuple* const _range_sig;
2037   const TypeTuple* const _range_cc;
2038 
2039 public:
2040   // Constants are shared among ADLC and VM
2041   enum { Control    = AdlcVMDeps::Control,
2042          I_O        = AdlcVMDeps::I_O,
2043          Memory     = AdlcVMDeps::Memory,
2044          FramePtr   = AdlcVMDeps::FramePtr,
2045          ReturnAdr  = AdlcVMDeps::ReturnAdr,
2046          Parms      = AdlcVMDeps::Parms
2047   };
2048 
2049 
2050   // Accessors:
2051   const TypeTuple* domain_sig() const { return _domain_sig; }
2052   const TypeTuple* domain_cc()  const { return _domain_cc; }
2053   const TypeTuple* range_sig()  const { return _range_sig; }
2054   const TypeTuple* range_cc()   const { return _range_cc; }
2055 
2056   static const TypeFunc* make(ciMethod* method, bool is_osr_compilation = false);
2057   static const TypeFunc *make(const TypeTuple* domain_sig, const TypeTuple* domain_cc,
2058                               const TypeTuple* range_sig, const TypeTuple* range_cc);
2059   static const TypeFunc *make(const TypeTuple* domain, const TypeTuple* range);
2060 
2061   virtual const Type *xmeet( const Type *t ) const;
2062   virtual const Type *xdual() const;    // Compute dual right now.
2063 
2064   BasicType return_type() const;
2065 
2066   bool returns_inline_type_as_fields() const { return range_sig() != range_cc(); }
2067 
2068 #ifndef PRODUCT
2069   virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
2070 #endif
2071   // Convenience common pre-built types.
2072 };
2073 
2074 //------------------------------accessors--------------------------------------
2075 inline bool Type::is_ptr_to_narrowoop() const {
2076 #ifdef _LP64
2077   return (isa_oopptr() != nullptr && is_oopptr()->is_ptr_to_narrowoop_nv());
2078 #else
2079   return false;
2080 #endif
2081 }
2082 
2083 inline bool Type::is_ptr_to_narrowklass() const {
2084 #ifdef _LP64
2085   return (isa_oopptr() != nullptr && is_oopptr()->is_ptr_to_narrowklass_nv());
2086 #else
2087   return false;

2303   return (_base == NarrowOop) ? is_narrowoop()->get_ptrtype()->isa_oopptr() : isa_oopptr();
2304 }
2305 
2306 inline const TypeNarrowOop* Type::make_narrowoop() const {
2307   return (_base == NarrowOop) ? is_narrowoop() :
2308                                 (isa_ptr() ? TypeNarrowOop::make(is_ptr()) : nullptr);
2309 }
2310 
2311 inline const TypeNarrowKlass* Type::make_narrowklass() const {
2312   return (_base == NarrowKlass) ? is_narrowklass() :
2313                                   (isa_ptr() ? TypeNarrowKlass::make(is_ptr()) : nullptr);
2314 }
2315 
2316 inline bool Type::is_floatingpoint() const {
2317   if( (_base == FloatCon)  || (_base == FloatBot) ||
2318       (_base == DoubleCon) || (_base == DoubleBot) )
2319     return true;
2320   return false;
2321 }
2322 
2323 inline bool Type::is_inlinetypeptr() const {
2324   return isa_instptr() != nullptr && is_instptr()->instance_klass()->is_inlinetype();
2325 }
2326 
2327 inline ciInlineKlass* Type::inline_klass() const {
2328   return make_ptr()->is_instptr()->instance_klass()->as_inline_klass();
2329 }
2330 
2331 
2332 // ===============================================================
2333 // Things that need to be 64-bits in the 64-bit build but
2334 // 32-bits in the 32-bit build.  Done this way to get full
2335 // optimization AND strong typing.
2336 #ifdef _LP64
2337 
2338 // For type queries and asserts
2339 #define is_intptr_t  is_long
2340 #define isa_intptr_t isa_long
2341 #define find_intptr_t_type find_long_type
2342 #define find_intptr_t_con  find_long_con
2343 #define TypeX        TypeLong
2344 #define Type_X       Type::Long
2345 #define TypeX_X      TypeLong::LONG
2346 #define TypeX_ZERO   TypeLong::ZERO
2347 // For 'ideal_reg' machine registers
2348 #define Op_RegX      Op_RegL
2349 // For phase->intcon variants
2350 #define MakeConX     longcon
2351 #define ConXNode     ConLNode
2352 // For array index arithmetic
2353 #define MulXNode     MulLNode
2354 #define AndXNode     AndLNode
2355 #define OrXNode      OrLNode
2356 #define CmpXNode     CmpLNode
2357 #define CmpUXNode    CmpULNode
2358 #define SubXNode     SubLNode
2359 #define LShiftXNode  LShiftLNode
2360 // For object size computation:
2361 #define AddXNode     AddLNode
2362 #define RShiftXNode  RShiftLNode
2363 // For card marks and hashcodes
2364 #define URShiftXNode URShiftLNode
2365 // For shenandoahSupport
2366 #define LoadXNode    LoadLNode
2367 #define StoreXNode   StoreLNode
2368 // Opcodes
2369 #define Op_LShiftX   Op_LShiftL
2370 #define Op_AndX      Op_AndL
2371 #define Op_AddX      Op_AddL
2372 #define Op_SubX      Op_SubL
2373 #define Op_XorX      Op_XorL
2374 #define Op_URShiftX  Op_URShiftL
2375 #define Op_LoadX     Op_LoadL
2376 #define Op_StoreX    Op_StoreL
2377 // conversions
2378 #define ConvI2X(x)   ConvI2L(x)
2379 #define ConvL2X(x)   (x)
2380 #define ConvX2I(x)   ConvL2I(x)
2381 #define ConvX2L(x)   (x)
2382 #define ConvX2UL(x)  (x)
2383 
2384 #else
2385 
2386 // For type queries and asserts
2387 #define is_intptr_t  is_int
2388 #define isa_intptr_t isa_int
2389 #define find_intptr_t_type find_int_type
2390 #define find_intptr_t_con  find_int_con
2391 #define TypeX        TypeInt
2392 #define Type_X       Type::Int
2393 #define TypeX_X      TypeInt::INT
2394 #define TypeX_ZERO   TypeInt::ZERO
2395 // For 'ideal_reg' machine registers
2396 #define Op_RegX      Op_RegI
2397 // For phase->intcon variants
2398 #define MakeConX     intcon
2399 #define ConXNode     ConINode
2400 // For array index arithmetic
2401 #define MulXNode     MulINode
2402 #define AndXNode     AndINode
2403 #define OrXNode      OrINode
2404 #define CmpXNode     CmpINode
2405 #define CmpUXNode    CmpUNode
2406 #define SubXNode     SubINode
2407 #define LShiftXNode  LShiftINode
2408 // For object size computation:
2409 #define AddXNode     AddINode
2410 #define RShiftXNode  RShiftINode
2411 // For card marks and hashcodes
2412 #define URShiftXNode URShiftINode
2413 // For shenandoahSupport
2414 #define LoadXNode    LoadINode
2415 #define StoreXNode   StoreINode
2416 // Opcodes
2417 #define Op_LShiftX   Op_LShiftI
2418 #define Op_AndX      Op_AndI
2419 #define Op_AddX      Op_AddI
2420 #define Op_SubX      Op_SubI
2421 #define Op_XorX      Op_XorI
2422 #define Op_URShiftX  Op_URShiftI
2423 #define Op_LoadX     Op_LoadI
2424 #define Op_StoreX    Op_StoreI
2425 // conversions
2426 #define ConvI2X(x)   (x)
2427 #define ConvL2X(x)   ConvL2I(x)
2428 #define ConvX2I(x)   (x)
2429 #define ConvX2L(x)   ConvI2L(x)
2430 #define ConvX2UL(x)  ConvI2UL(x)
2431 
2432 #endif
2433 
2434 #endif // SHARE_OPTO_TYPE_HPP
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