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 "opto/compile.hpp"
30 #include "opto/rangeinference.hpp"
31 #include "runtime/handles.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 TypeH;
51 class TypeInteger;
127 Memory, // Abstract store
128 HalfFloatTop, // No float value
129 HalfFloatCon, // Floating point constant
130 HalfFloatBot, // Any float value
131 FloatTop, // No float value
132 FloatCon, // Floating point constant
133 FloatBot, // Any float value
134 DoubleTop, // No double value
135 DoubleCon, // Double precision constant
136 DoubleBot, // Any double value
137 Bottom, // Bottom of lattice
138 lastype // Bogus ending type (not in lattice)
139 };
140
141 // Signal values for offsets from a base pointer
142 enum OFFSET_SIGNALS {
143 OffsetTop = -2000000000, // undefined offset
144 OffsetBot = -2000000001 // any possible offset
145 };
146
147 // Min and max WIDEN values.
148 enum WIDEN {
149 WidenMin = 0,
150 WidenMax = 3
151 };
152
153 private:
154 typedef struct {
155 TYPES dual_type;
156 BasicType basic_type;
157 const char* msg;
158 bool isa_oop;
159 uint ideal_reg;
160 } TypeInfo;
161
162 // Dictionary of types shared among compilations.
163 static Dict* _shared_type_dict;
164 static const TypeInfo _type_info[];
165
166 static int uhash( const Type *const t );
327 const TypeInstPtr *isa_instptr() const; // Returns null if not InstPtr
328 const TypeInstPtr *is_instptr() const; // Instance
329 const TypeAryPtr *isa_aryptr() const; // Returns null if not AryPtr
330 const TypeAryPtr *is_aryptr() const; // Array oop
331
332 template <typename TypeClass>
333 const TypeClass* cast() const;
334
335 const TypeMetadataPtr *isa_metadataptr() const; // Returns null if not oop ptr type
336 const TypeMetadataPtr *is_metadataptr() const; // Java-style GC'd pointer
337 const TypeKlassPtr *isa_klassptr() const; // Returns null if not KlassPtr
338 const TypeKlassPtr *is_klassptr() const; // assert if not KlassPtr
339 const TypeInstKlassPtr *isa_instklassptr() const; // Returns null if not IntKlassPtr
340 const TypeInstKlassPtr *is_instklassptr() const; // assert if not IntKlassPtr
341 const TypeAryKlassPtr *isa_aryklassptr() const; // Returns null if not AryKlassPtr
342 const TypeAryKlassPtr *is_aryklassptr() const; // assert if not AryKlassPtr
343
344 virtual bool is_finite() const; // Has a finite value
345 virtual bool is_nan() const; // Is not a number (NaN)
346
347 // Returns this ptr type or the equivalent ptr type for this compressed pointer.
348 const TypePtr* make_ptr() const;
349
350 // Returns this oopptr type or the equivalent oopptr type for this compressed pointer.
351 // Asserts if the underlying type is not an oopptr or narrowoop.
352 const TypeOopPtr* make_oopptr() const;
353
354 // Returns this compressed pointer or the equivalent compressed version
355 // of this pointer type.
356 const TypeNarrowOop* make_narrowoop() const;
357
358 // Returns this compressed klass pointer or the equivalent
359 // compressed version of this pointer type.
360 const TypeNarrowKlass* make_narrowklass() const;
361
362 // Special test for register pressure heuristic
363 bool is_floatingpoint() const; // True if Float or Double base type
364
365 // Do you have memory, directly or through a tuple?
366 bool has_memory( ) const;
463 static const Type* get_typeflow_type(ciType* type);
464
465 static const Type* make_from_constant(ciConstant constant,
466 bool require_constant = false,
467 int stable_dimension = 0,
468 bool is_narrow = false,
469 bool is_autobox_cache = false);
470
471 static const Type* make_constant_from_field(ciInstance* holder,
472 int off,
473 bool is_unsigned_load,
474 BasicType loadbt);
475
476 static const Type* make_constant_from_field(ciField* field,
477 ciInstance* holder,
478 BasicType loadbt,
479 bool is_unsigned_load);
480
481 static const Type* make_constant_from_array_element(ciArray* array,
482 int off,
483 int stable_dimension,
484 BasicType loadbt,
485 bool is_unsigned_load);
486
487 // Speculative type helper methods. See TypePtr.
488 virtual const TypePtr* speculative() const { return nullptr; }
489 virtual ciKlass* speculative_type() const { return nullptr; }
490 virtual ciKlass* speculative_type_not_null() const { return nullptr; }
491 virtual bool speculative_maybe_null() const { return true; }
492 virtual bool speculative_always_null() const { return true; }
493 virtual const Type* remove_speculative() const { return this; }
494 virtual const Type* cleanup_speculative() const { return this; }
495 virtual bool would_improve_type(ciKlass* exact_kls, int inline_depth) const { return exact_kls != nullptr; }
496 virtual bool would_improve_ptr(ProfilePtrKind ptr_kind) const { return ptr_kind == ProfileAlwaysNull || ptr_kind == ProfileNeverNull; }
497 const Type* maybe_remove_speculative(bool include_speculative) const;
498
499 virtual bool maybe_null() const { return true; }
500 virtual bool is_known_instance() const { return false; }
501
502 private:
951 const Type ** const _fields; // Array of field types
952
953 public:
954 virtual bool eq( const Type *t ) const;
955 virtual uint hash() const; // Type specific hashing
956 virtual bool singleton(void) const; // TRUE if type is a singleton
957 virtual bool empty(void) const; // TRUE if type is vacuous
958
959 // Accessors:
960 uint cnt() const { return _cnt; }
961 const Type* field_at(uint i) const {
962 assert(i < _cnt, "oob");
963 return _fields[i];
964 }
965 void set_field_at(uint i, const Type* t) {
966 assert(i < _cnt, "oob");
967 _fields[i] = t;
968 }
969
970 static const TypeTuple *make( uint cnt, const Type **fields );
971 static const TypeTuple *make_range(ciSignature *sig, InterfaceHandling interface_handling = ignore_interfaces);
972 static const TypeTuple *make_domain(ciInstanceKlass* recv, ciSignature *sig, InterfaceHandling interface_handling);
973
974 // Subroutine call type with space allocated for argument types
975 // Memory for Control, I_O, Memory, FramePtr, and ReturnAdr is allocated implicitly
976 static const Type **fields( uint arg_cnt );
977
978 virtual const Type *xmeet( const Type *t ) const;
979 virtual const Type *xdual() const; // Compute dual right now.
980 // Convenience common pre-built types.
981 static const TypeTuple *IFBOTH;
982 static const TypeTuple *IFFALSE;
983 static const TypeTuple *IFTRUE;
984 static const TypeTuple *IFNEITHER;
985 static const TypeTuple *LOOPBODY;
986 static const TypeTuple *MEMBAR;
987 static const TypeTuple *STORECONDITIONAL;
988 static const TypeTuple *START_I2C;
989 static const TypeTuple *INT_PAIR;
990 static const TypeTuple *LONG_PAIR;
991 static const TypeTuple *INT_CC_PAIR;
992 static const TypeTuple *LONG_CC_PAIR;
993 #ifndef PRODUCT
994 virtual void dump2( Dict &d, uint, outputStream *st ) const; // Specialized per-Type dumping
995 #endif
996 };
997
998 //------------------------------TypeAry----------------------------------------
999 // Class of Array Types
1000 class TypeAry : public Type {
1001 TypeAry(const Type* elem, const TypeInt* size, bool stable) : Type(Array),
1002 _elem(elem), _size(size), _stable(stable) {}
1003 public:
1004 virtual bool eq( const Type *t ) const;
1005 virtual uint hash() const; // Type specific hashing
1006 virtual bool singleton(void) const; // TRUE if type is a singleton
1007 virtual bool empty(void) const; // TRUE if type is vacuous
1008
1009 private:
1010 const Type *_elem; // Element type of array
1011 const TypeInt *_size; // Elements in array
1012 const bool _stable; // Are elements @Stable?
1013 friend class TypeAryPtr;
1014
1015 public:
1016 static const TypeAry* make(const Type* elem, const TypeInt* size, bool stable = false);
1017
1018 virtual const Type *xmeet( const Type *t ) const;
1019 virtual const Type *xdual() const; // Compute dual right now.
1020 bool ary_must_be_exact() const; // true if arrays of such are never generic
1021 virtual const TypeAry* remove_speculative() const;
1022 virtual const Type* cleanup_speculative() const;
1023 #ifndef PRODUCT
1024 virtual void dump2( Dict &d, uint, outputStream *st ) const; // Specialized per-Type dumping
1025 #endif
1026 };
1027
1028 //------------------------------TypeVect---------------------------------------
1029 // Basic class of vector (mask) types.
1030 class TypeVect : public Type {
1031 const BasicType _elem_bt; // Vector's element type
1032 const uint _length; // Elements in vector (power of 2)
1033
1034 protected:
1035 TypeVect(TYPES t, BasicType elem_bt, uint length) : Type(t),
1036 _elem_bt(elem_bt), _length(length) {}
1155
1156 const Type* xmeet(const Type* t) const;
1157
1158 bool singleton(void) const;
1159 bool has_non_array_interface() const;
1160 };
1161
1162 //------------------------------TypePtr----------------------------------------
1163 // Class of machine Pointer Types: raw data, instances or arrays.
1164 // If the _base enum is AnyPtr, then this refers to all of the above.
1165 // Otherwise the _base will indicate which subset of pointers is affected,
1166 // and the class will be inherited from.
1167 class TypePtr : public Type {
1168 friend class TypeNarrowPtr;
1169 friend class Type;
1170 protected:
1171 static const TypeInterfaces* interfaces(ciKlass*& k, bool klass, bool interface, bool array, InterfaceHandling interface_handling);
1172
1173 public:
1174 enum PTR { TopPTR, AnyNull, Constant, Null, NotNull, BotPTR, lastPTR };
1175 protected:
1176 TypePtr(TYPES t, PTR ptr, int offset,
1177 relocInfo::relocType reloc,
1178 const TypePtr* speculative = nullptr,
1179 int inline_depth = InlineDepthBottom) :
1180 Type(t), _speculative(speculative), _inline_depth(inline_depth), _offset(offset),
1181 _ptr(ptr), _reloc(reloc) {}
1182 static const PTR ptr_meet[lastPTR][lastPTR];
1183 static const PTR ptr_dual[lastPTR];
1184 static const char * const ptr_msg[lastPTR];
1185
1186 enum {
1187 InlineDepthBottom = INT_MAX,
1188 InlineDepthTop = -InlineDepthBottom
1189 };
1190
1191 // Extra type information profiling gave us. We propagate it the
1192 // same way the rest of the type info is propagated. If we want to
1193 // use it, then we have to emit a guard: this part of the type is
1194 // not something we know but something we speculate about the type.
1195 const TypePtr* _speculative;
1196 // For speculative types, we record at what inlining depth the
1197 // profiling point that provided the data is. We want to favor
1198 // profile data coming from outer scopes which are likely better for
1199 // the current compilation.
1200 int _inline_depth;
1201
1202 // utility methods to work on the speculative part of the type
1203 const TypePtr* dual_speculative() const;
1204 const TypePtr* xmeet_speculative(const TypePtr* other) const;
1205 bool eq_speculative(const TypePtr* other) const;
1214 #ifndef PRODUCT
1215 void dump_speculative(outputStream* st) const;
1216 void dump_inline_depth(outputStream* st) const;
1217 void dump_offset(outputStream* st) const;
1218 #endif
1219
1220 // TypeInstPtr (TypeAryPtr resp.) and TypeInstKlassPtr (TypeAryKlassPtr resp.) implement very similar meet logic.
1221 // The logic for meeting 2 instances (2 arrays resp.) is shared in the 2 utility methods below. However the logic for
1222 // the oop and klass versions can be slightly different and extra logic may have to be executed depending on what
1223 // exact case the meet falls into. The MeetResult struct is used by the utility methods to communicate what case was
1224 // encountered so the right logic specific to klasses or oops can be executed.,
1225 enum MeetResult {
1226 QUICK,
1227 UNLOADED,
1228 SUBTYPE,
1229 NOT_SUBTYPE,
1230 LCA
1231 };
1232 template<class T> static TypePtr::MeetResult meet_instptr(PTR& ptr, const TypeInterfaces*& interfaces, const T* this_type,
1233 const T* other_type, ciKlass*& res_klass, bool& res_xk);
1234
1235 template<class T> static MeetResult meet_aryptr(PTR& ptr, const Type*& elem, const T* this_ary, const T* other_ary,
1236 ciKlass*& res_klass, bool& res_xk);
1237
1238 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);
1239 template <class T1, class T2> static bool is_same_java_type_as_helper_for_instance(const T1* this_one, const T2* other);
1240 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);
1241 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);
1242 template <class T1, class T2> static bool is_same_java_type_as_helper_for_array(const T1* this_one, const T2* other);
1243 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);
1244 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);
1245 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);
1246 public:
1247 const int _offset; // Offset into oop, with TOP & BOT
1248 const PTR _ptr; // Pointer equivalence class
1249 const relocInfo::relocType _reloc;
1250
1251 int offset() const { return _offset; }
1252 PTR ptr() const { return _ptr; }
1253 relocInfo::relocType reloc() const { return _reloc; }
1254
1255 static const TypePtr *make(TYPES t, PTR ptr, int offset,
1256 const TypePtr* speculative = nullptr,
1257 int inline_depth = InlineDepthBottom,
1258 relocInfo::relocType reloc = relocInfo::none);
1259
1260 // Return a 'ptr' version of this type
1261 virtual const TypePtr* cast_to_ptr_type(PTR ptr) const;
1262
1263 virtual intptr_t get_con() const;
1264
1265 int xadd_offset( intptr_t offset ) const;
1266 virtual const TypePtr* add_offset(intptr_t offset) const;
1267 virtual const TypePtr* with_offset(intptr_t offset) const;
1268 virtual bool eq(const Type *t) const;
1269 virtual uint hash() const; // Type specific hashing
1270
1271 virtual bool singleton(void) const; // TRUE if type is a singleton
1272 virtual bool empty(void) const; // TRUE if type is vacuous
1273 virtual const Type *xmeet( const Type *t ) const;
1274 virtual const Type *xmeet_helper( const Type *t ) const;
1275 int meet_offset( int offset ) const;
1276 int dual_offset( ) const;
1277 virtual const Type *xdual() const; // Compute dual right now.
1278
1279 // meet, dual and join over pointer equivalence sets
1280 PTR meet_ptr( const PTR in_ptr ) const { return ptr_meet[in_ptr][ptr()]; }
1281 PTR dual_ptr() const { return ptr_dual[ptr()]; }
1282
1283 // This is textually confusing unless one recalls that
1284 // join(t) == dual()->meet(t->dual())->dual().
1285 PTR join_ptr( const PTR in_ptr ) const {
1286 return ptr_dual[ ptr_meet[ ptr_dual[in_ptr] ] [ dual_ptr() ] ];
1287 }
1288
1289 // Speculative type helper methods.
1290 virtual const TypePtr* speculative() const { return _speculative; }
1291 int inline_depth() const { return _inline_depth; }
1292 virtual ciKlass* speculative_type() const;
1293 virtual ciKlass* speculative_type_not_null() const;
1294 virtual bool speculative_maybe_null() const;
1295 virtual bool speculative_always_null() const;
1296 virtual const TypePtr* remove_speculative() const;
1297 virtual const Type* cleanup_speculative() const;
1298 virtual bool would_improve_type(ciKlass* exact_kls, int inline_depth) const;
1299 virtual bool would_improve_ptr(ProfilePtrKind maybe_null) const;
1300 virtual const TypePtr* with_inline_depth(int depth) const;
1301
1302 virtual bool maybe_null() const { return meet_ptr(Null) == ptr(); }
1303
1304 // Tests for relation to centerline of type lattice:
1305 static bool above_centerline(PTR ptr) { return (ptr <= AnyNull); }
1306 static bool below_centerline(PTR ptr) { return (ptr >= NotNull); }
1307 // Convenience common pre-built types.
1308 static const TypePtr *NULL_PTR;
1309 static const TypePtr *NOTNULL;
1310 static const TypePtr *BOTTOM;
1311 #ifndef PRODUCT
1312 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
1313 #endif
1314 };
1315
1316 //------------------------------TypeRawPtr-------------------------------------
1317 // Class of raw pointers, pointers to things other than Oops. Examples
1318 // include the stack pointer, top of heap, card-marking area, handles, etc.
1319 class TypeRawPtr : public TypePtr {
1320 protected:
1321 TypeRawPtr(PTR ptr, address bits, relocInfo::relocType reloc) : TypePtr(RawPtr, ptr, 0, reloc), _bits(bits){}
1322 public:
1323 virtual bool eq( const Type *t ) const;
1324 virtual uint hash() const; // Type specific hashing
1325
1326 const address _bits; // Constant value, if applicable
1327
1328 static const TypeRawPtr* make(PTR ptr);
1329 static const TypeRawPtr* make(address bits, relocInfo::relocType reloc = relocInfo::external_word_type);
1330
1331 // Return a 'ptr' version of this type
1332 virtual const TypeRawPtr* cast_to_ptr_type(PTR ptr) const;
1333
1334 virtual intptr_t get_con() const;
1335
1336 virtual const TypePtr* add_offset(intptr_t offset) const;
1337 virtual const TypeRawPtr* with_offset(intptr_t offset) const { ShouldNotReachHere(); return nullptr;}
1338
1339 virtual const Type *xmeet( const Type *t ) const;
1340 virtual const Type *xdual() const; // Compute dual right now.
1341 // Convenience common pre-built types.
1342 static const TypeRawPtr *BOTTOM;
1343 static const TypeRawPtr *NOTNULL;
1344 #ifndef PRODUCT
1345 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
1346 #endif
1347 };
1348
1349 //------------------------------TypeOopPtr-------------------------------------
1350 // Some kind of oop (Java pointer), either instance or array.
1351 class TypeOopPtr : public TypePtr {
1352 friend class TypeAry;
1353 friend class TypePtr;
1354 friend class TypeInstPtr;
1355 friend class TypeAryPtr;
1356 protected:
1357 TypeOopPtr(TYPES t, PTR ptr, ciKlass* k, const TypeInterfaces* interfaces, bool xk, ciObject* o, int offset, int instance_id,
1358 const TypePtr* speculative, int inline_depth);
1359 public:
1360 virtual bool eq( const Type *t ) const;
1361 virtual uint hash() const; // Type specific hashing
1362 virtual bool singleton(void) const; // TRUE if type is a singleton
1363 enum {
1364 InstanceTop = -1, // undefined instance
1365 InstanceBot = 0 // any possible instance
1366 };
1367 protected:
1368
1369 // Oop is null, unless this is a constant oop.
1370 ciObject* _const_oop; // Constant oop
1371 // If _klass is null, then so is _sig. This is an unloaded klass.
1372 ciKlass* _klass; // Klass object
1373
1374 const TypeInterfaces* _interfaces;
1375
1376 // Does the type exclude subclasses of the klass? (Inexact == polymorphic.)
1377 bool _klass_is_exact;
1378 bool _is_ptr_to_narrowoop;
1379 bool _is_ptr_to_narrowklass;
1380 bool _is_ptr_to_boxed_value;
1381
1382 // If not InstanceTop or InstanceBot, indicates that this is
1383 // a particular instance of this type which is distinct.
1384 // This is the node index of the allocation node creating this instance.
1385 int _instance_id;
1386
1387 static const TypeOopPtr* make_from_klass_common(ciKlass* klass, bool klass_change, bool try_for_exact, InterfaceHandling interface_handling);
1388
1389 int dual_instance_id() const;
1390 int meet_instance_id(int uid) const;
1391
1392 const TypeInterfaces* meet_interfaces(const TypeOopPtr* other) const;
1393
1394 // Do not allow interface-vs.-noninterface joins to collapse to top.
1395 virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
1396
1397 virtual ciKlass* exact_klass_helper() const { return nullptr; }
1398 virtual ciKlass* klass() const { return _klass; }
1399
1400 #ifndef PRODUCT
1401 void dump_instance_id(outputStream* st) const;
1402 #endif // PRODUCT
1403
1404 public:
1405
1406 bool is_java_subtype_of(const TypeOopPtr* other) const {
1407 return is_java_subtype_of_helper(other, klass_is_exact(), other->klass_is_exact());
1408 }
1409
1410 bool is_same_java_type_as(const TypePtr* other) const {
1411 return is_same_java_type_as_helper(other->is_oopptr());
1412 }
1413
1414 virtual bool is_same_java_type_as_helper(const TypeOopPtr* other) const {
1415 ShouldNotReachHere(); return false;
1416 }
1417
1418 bool maybe_java_subtype_of(const TypeOopPtr* other) const {
1429 return make_from_klass_common(klass, true, false, interface_handling);
1430 }
1431 // Same as before, but will produce an exact type, even if
1432 // the klass is not final, as long as it has exactly one implementation.
1433 static const TypeOopPtr* make_from_klass_unique(ciKlass* klass, InterfaceHandling interface_handling= ignore_interfaces) {
1434 return make_from_klass_common(klass, true, true, interface_handling);
1435 }
1436 // Same as before, but does not respects UseUniqueSubclasses.
1437 // Use this only for creating array element types.
1438 static const TypeOopPtr* make_from_klass_raw(ciKlass* klass, InterfaceHandling interface_handling = ignore_interfaces) {
1439 return make_from_klass_common(klass, false, false, interface_handling);
1440 }
1441 // Creates a singleton type given an object.
1442 // If the object cannot be rendered as a constant,
1443 // may return a non-singleton type.
1444 // If require_constant, produce a null if a singleton is not possible.
1445 static const TypeOopPtr* make_from_constant(ciObject* o,
1446 bool require_constant = false);
1447
1448 // Make a generic (unclassed) pointer to an oop.
1449 static const TypeOopPtr* make(PTR ptr, int offset, int instance_id,
1450 const TypePtr* speculative = nullptr,
1451 int inline_depth = InlineDepthBottom);
1452
1453 ciObject* const_oop() const { return _const_oop; }
1454 // Exact klass, possibly an interface or an array of interface
1455 ciKlass* exact_klass(bool maybe_null = false) const { assert(klass_is_exact(), ""); ciKlass* k = exact_klass_helper(); assert(k != nullptr || maybe_null, ""); return k; }
1456 ciKlass* unloaded_klass() const { assert(!is_loaded(), "only for unloaded types"); return klass(); }
1457
1458 virtual bool is_loaded() const { return klass()->is_loaded(); }
1459 virtual bool klass_is_exact() const { return _klass_is_exact; }
1460
1461 // Returns true if this pointer points at memory which contains a
1462 // compressed oop references.
1463 bool is_ptr_to_narrowoop_nv() const { return _is_ptr_to_narrowoop; }
1464 bool is_ptr_to_narrowklass_nv() const { return _is_ptr_to_narrowklass; }
1465 bool is_ptr_to_boxed_value() const { return _is_ptr_to_boxed_value; }
1466 bool is_known_instance() const { return _instance_id > 0; }
1467 int instance_id() const { return _instance_id; }
1468 bool is_known_instance_field() const { return is_known_instance() && _offset >= 0; }
1469
1470 virtual intptr_t get_con() const;
1471
1472 virtual const TypeOopPtr* cast_to_ptr_type(PTR ptr) const;
1473
1474 virtual const TypeOopPtr* cast_to_exactness(bool klass_is_exact) const;
1475
1476 virtual const TypeOopPtr *cast_to_instance_id(int instance_id) const;
1477
1478 // corresponding pointer to klass, for a given instance
1479 virtual const TypeKlassPtr* as_klass_type(bool try_for_exact = false) const;
1480
1481 virtual const TypeOopPtr* with_offset(intptr_t offset) const;
1482 virtual const TypePtr* add_offset(intptr_t offset) const;
1483
1484 // Speculative type helper methods.
1485 virtual const TypeOopPtr* remove_speculative() const;
1486 virtual const Type* cleanup_speculative() const;
1487 virtual bool would_improve_type(ciKlass* exact_kls, int inline_depth) const;
1488 virtual const TypePtr* with_inline_depth(int depth) const;
1511 return _interfaces;
1512 };
1513
1514 const TypeOopPtr* is_reference_type(const Type* other) const {
1515 return other->isa_oopptr();
1516 }
1517
1518 const TypeAryPtr* is_array_type(const TypeOopPtr* other) const {
1519 return other->isa_aryptr();
1520 }
1521
1522 const TypeInstPtr* is_instance_type(const TypeOopPtr* other) const {
1523 return other->isa_instptr();
1524 }
1525 };
1526
1527 //------------------------------TypeInstPtr------------------------------------
1528 // Class of Java object pointers, pointing either to non-array Java instances
1529 // or to a Klass* (including array klasses).
1530 class TypeInstPtr : public TypeOopPtr {
1531 TypeInstPtr(PTR ptr, ciKlass* k, const TypeInterfaces* interfaces, bool xk, ciObject* o, int off, int instance_id,
1532 const TypePtr* speculative, int inline_depth);
1533 virtual bool eq( const Type *t ) const;
1534 virtual uint hash() const; // Type specific hashing
1535
1536 ciKlass* exact_klass_helper() const;
1537
1538 public:
1539
1540 // Instance klass, ignoring any interface
1541 ciInstanceKlass* instance_klass() const {
1542 assert(!(klass()->is_loaded() && klass()->is_interface()), "");
1543 return klass()->as_instance_klass();
1544 }
1545
1546 bool is_same_java_type_as_helper(const TypeOopPtr* other) const;
1547 bool is_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const;
1548 bool maybe_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const;
1549
1550 // Make a pointer to a constant oop.
1551 static const TypeInstPtr *make(ciObject* o) {
1552 ciKlass* k = o->klass();
1553 const TypeInterfaces* interfaces = TypePtr::interfaces(k, true, false, false, ignore_interfaces);
1554 return make(TypePtr::Constant, k, interfaces, true, o, 0, InstanceBot);
1555 }
1556 // Make a pointer to a constant oop with offset.
1557 static const TypeInstPtr *make(ciObject* o, int offset) {
1558 ciKlass* k = o->klass();
1559 const TypeInterfaces* interfaces = TypePtr::interfaces(k, true, false, false, ignore_interfaces);
1560 return make(TypePtr::Constant, k, interfaces, true, o, offset, InstanceBot);
1561 }
1562
1563 // Make a pointer to some value of type klass.
1564 static const TypeInstPtr *make(PTR ptr, ciKlass* klass, InterfaceHandling interface_handling = ignore_interfaces) {
1565 const TypeInterfaces* interfaces = TypePtr::interfaces(klass, true, true, false, interface_handling);
1566 return make(ptr, klass, interfaces, false, nullptr, 0, InstanceBot);
1567 }
1568
1569 // Make a pointer to some non-polymorphic value of exactly type klass.
1570 static const TypeInstPtr *make_exact(PTR ptr, ciKlass* klass) {
1571 const TypeInterfaces* interfaces = TypePtr::interfaces(klass, true, false, false, ignore_interfaces);
1572 return make(ptr, klass, interfaces, true, nullptr, 0, InstanceBot);
1573 }
1574
1575 // Make a pointer to some value of type klass with offset.
1576 static const TypeInstPtr *make(PTR ptr, ciKlass* klass, int offset) {
1577 const TypeInterfaces* interfaces = TypePtr::interfaces(klass, true, false, false, ignore_interfaces);
1578 return make(ptr, klass, interfaces, false, nullptr, offset, InstanceBot);
1579 }
1580
1581 static const TypeInstPtr *make(PTR ptr, ciKlass* k, const TypeInterfaces* interfaces, bool xk, ciObject* o, int offset,
1582 int instance_id = InstanceBot,
1583 const TypePtr* speculative = nullptr,
1584 int inline_depth = InlineDepthBottom);
1585
1586 static const TypeInstPtr *make(PTR ptr, ciKlass* k, bool xk, ciObject* o, int offset, int instance_id = InstanceBot) {
1587 const TypeInterfaces* interfaces = TypePtr::interfaces(k, true, false, false, ignore_interfaces);
1588 return make(ptr, k, interfaces, xk, o, offset, instance_id);
1589 }
1590
1591 // If this is a java.lang.Class constant, return the type for it or null.
1592 // Pass to Type::get_const_type to turn it to a type, which will usually
1593 // be a TypeInstPtr, but may also be a TypeInt::INT for int.class, etc.
1594 ciType* java_mirror_type() const;
1595
1596 virtual const TypeInstPtr* cast_to_ptr_type(PTR ptr) const;
1597
1598 virtual const TypeInstPtr* cast_to_exactness(bool klass_is_exact) const;
1599
1600 virtual const TypeInstPtr* cast_to_instance_id(int instance_id) const;
1601
1602 virtual const TypePtr* add_offset(intptr_t offset) const;
1603 virtual const TypeInstPtr* with_offset(intptr_t offset) const;
1604
1605 // Speculative type helper methods.
1606 virtual const TypeInstPtr* remove_speculative() const;
1607 const TypeInstPtr* with_speculative(const TypePtr* speculative) const;
1608 virtual const TypePtr* with_inline_depth(int depth) const;
1609 virtual const TypePtr* with_instance_id(int instance_id) const;
1610
1611 // the core of the computation of the meet of 2 types
1612 virtual const Type *xmeet_helper(const Type *t) const;
1613 virtual const TypeInstPtr *xmeet_unloaded(const TypeInstPtr *tinst, const TypeInterfaces* interfaces) const;
1614 virtual const Type *xdual() const; // Compute dual right now.
1615
1616 const TypeKlassPtr* as_klass_type(bool try_for_exact = false) const;
1617
1618 // Convenience common pre-built types.
1619 static const TypeInstPtr *NOTNULL;
1620 static const TypeInstPtr *BOTTOM;
1621 static const TypeInstPtr *MIRROR;
1622 static const TypeInstPtr *MARK;
1623 static const TypeInstPtr *KLASS;
1624 #ifndef PRODUCT
1625 virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
1626 #endif
1627
1628 private:
1629 virtual bool is_meet_subtype_of_helper(const TypeOopPtr* other, bool this_xk, bool other_xk) const;
1630
1631 virtual bool is_meet_same_type_as(const TypePtr* other) const {
1632 return _klass->equals(other->is_instptr()->_klass) && _interfaces->eq(other->is_instptr()->_interfaces);
1633 }
1634
1635 };
1636
1637 //------------------------------TypeAryPtr-------------------------------------
1638 // Class of Java array pointers
1639 class TypeAryPtr : public TypeOopPtr {
1640 friend class Type;
1641 friend class TypePtr;
1642 friend class TypeInterfaces;
1643
1644 TypeAryPtr( PTR ptr, ciObject* o, const TypeAry *ary, ciKlass* k, bool xk,
1645 int offset, int instance_id, bool is_autobox_cache,
1646 const TypePtr* speculative, int inline_depth)
1647 : TypeOopPtr(AryPtr,ptr,k,_array_interfaces,xk,o,offset, instance_id, speculative, inline_depth),
1648 _ary(ary),
1649 _is_autobox_cache(is_autobox_cache)
1650 {
1651 int dummy;
1652 bool top_or_bottom = (base_element_type(dummy) == Type::TOP || base_element_type(dummy) == Type::BOTTOM);
1653
1654 if (UseCompressedOops && (elem()->make_oopptr() != nullptr && !top_or_bottom) &&
1655 _offset != 0 && _offset != arrayOopDesc::length_offset_in_bytes() &&
1656 _offset != arrayOopDesc::klass_offset_in_bytes()) {
1657 _is_ptr_to_narrowoop = true;
1658 }
1659
1660 }
1661 virtual bool eq( const Type *t ) const;
1662 virtual uint hash() const; // Type specific hashing
1663 const TypeAry *_ary; // Array we point into
1664 const bool _is_autobox_cache;
1665
1666 ciKlass* compute_klass() const;
1667
1668 // A pointer to delay allocation to Type::Initialize_shared()
1669
1670 static const TypeInterfaces* _array_interfaces;
1671 ciKlass* exact_klass_helper() const;
1672 // Only guaranteed non null for array of basic types
1673 ciKlass* klass() const;
1674
1675 public:
1676
1677 bool is_same_java_type_as_helper(const TypeOopPtr* other) const;
1678 bool is_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const;
1679 bool maybe_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const;
1680
1681 // returns base element type, an instance klass (and not interface) for object arrays
1682 const Type* base_element_type(int& dims) const;
1683
1684 // Accessors
1685 bool is_loaded() const { return (_ary->_elem->make_oopptr() ? _ary->_elem->make_oopptr()->is_loaded() : true); }
1686
1687 const TypeAry* ary() const { return _ary; }
1688 const Type* elem() const { return _ary->_elem; }
1689 const TypeInt* size() const { return _ary->_size; }
1690 bool is_stable() const { return _ary->_stable; }
1691
1692 bool is_autobox_cache() const { return _is_autobox_cache; }
1693
1694 static const TypeAryPtr *make(PTR ptr, const TypeAry *ary, ciKlass* k, bool xk, int offset,
1695 int instance_id = InstanceBot,
1696 const TypePtr* speculative = nullptr,
1697 int inline_depth = InlineDepthBottom);
1698 // Constant pointer to array
1699 static const TypeAryPtr *make(PTR ptr, ciObject* o, const TypeAry *ary, ciKlass* k, bool xk, int offset,
1700 int instance_id = InstanceBot,
1701 const TypePtr* speculative = nullptr,
1702 int inline_depth = InlineDepthBottom, bool is_autobox_cache = false);
1703
1704 // Return a 'ptr' version of this type
1705 virtual const TypeAryPtr* cast_to_ptr_type(PTR ptr) const;
1706
1707 virtual const TypeAryPtr* cast_to_exactness(bool klass_is_exact) const;
1708
1709 virtual const TypeAryPtr* cast_to_instance_id(int instance_id) const;
1710
1711 virtual const TypeAryPtr* cast_to_size(const TypeInt* size) const;
1712 virtual const TypeInt* narrow_size_type(const TypeInt* size) const;
1713
1714 virtual bool empty(void) const; // TRUE if type is vacuous
1715 virtual const TypePtr *add_offset( intptr_t offset ) const;
1716 virtual const TypeAryPtr *with_offset( intptr_t offset ) const;
1717 const TypeAryPtr* with_ary(const TypeAry* ary) const;
1718
1719 // Speculative type helper methods.
1720 virtual const TypeAryPtr* remove_speculative() const;
1721 virtual const TypePtr* with_inline_depth(int depth) const;
1722 virtual const TypePtr* with_instance_id(int instance_id) const;
1723
1724 // the core of the computation of the meet of 2 types
1725 virtual const Type *xmeet_helper(const Type *t) const;
1726 virtual const Type *xdual() const; // Compute dual right now.
1727
1728 const TypeAryPtr* cast_to_stable(bool stable, int stable_dimension = 1) const;
1729 int stable_dimension() const;
1730
1731 const TypeAryPtr* cast_to_autobox_cache() const;
1732
1733 static jint max_array_length(BasicType etype) ;
1734 virtual const TypeKlassPtr* as_klass_type(bool try_for_exact = false) const;
1735
1736 // Convenience common pre-built types.
1737 static const TypeAryPtr* BOTTOM;
1738 static const TypeAryPtr* RANGE;
1739 static const TypeAryPtr* OOPS;
1740 static const TypeAryPtr* NARROWOOPS;
1741 static const TypeAryPtr* BYTES;
1742 static const TypeAryPtr* SHORTS;
1743 static const TypeAryPtr* CHARS;
1744 static const TypeAryPtr* INTS;
1745 static const TypeAryPtr* LONGS;
1746 static const TypeAryPtr* FLOATS;
1747 static const TypeAryPtr* DOUBLES;
1748 // selects one of the above:
1749 static const TypeAryPtr *get_array_body_type(BasicType elem) {
1750 assert((uint)elem <= T_CONFLICT && _array_body_type[elem] != nullptr, "bad elem type");
1751 return _array_body_type[elem];
1752 }
1753 static const TypeAryPtr *_array_body_type[T_CONFLICT+1];
1754 // sharpen the type of an int which is used as an array size
1755 #ifndef PRODUCT
1756 virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
1757 #endif
1758 private:
1759 virtual bool is_meet_subtype_of_helper(const TypeOopPtr* other, bool this_xk, bool other_xk) const;
1760 };
1761
1762 //------------------------------TypeMetadataPtr-------------------------------------
1763 // Some kind of metadata, either Method*, MethodData* or CPCacheOop
1764 class TypeMetadataPtr : public TypePtr {
1765 protected:
1766 TypeMetadataPtr(PTR ptr, ciMetadata* metadata, int offset);
1767 // Do not allow interface-vs.-noninterface joins to collapse to top.
1768 virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
1769 public:
1770 virtual bool eq( const Type *t ) const;
1771 virtual uint hash() const; // Type specific hashing
1772 virtual bool singleton(void) const; // TRUE if type is a singleton
1773
1774 private:
1775 ciMetadata* _metadata;
1776
1777 public:
1778 static const TypeMetadataPtr* make(PTR ptr, ciMetadata* m, int offset);
1779
1780 static const TypeMetadataPtr* make(ciMethod* m);
1781 static const TypeMetadataPtr* make(ciMethodData* m);
1782
1783 ciMetadata* metadata() const { return _metadata; }
1784
1785 virtual const TypeMetadataPtr* cast_to_ptr_type(PTR ptr) const;
1786
1787 virtual const TypePtr *add_offset( intptr_t offset ) const;
1788
1789 virtual const Type *xmeet( const Type *t ) const;
1790 virtual const Type *xdual() const; // Compute dual right now.
1791
1792 virtual intptr_t get_con() const;
1793
1794 // Convenience common pre-built types.
1795 static const TypeMetadataPtr *BOTTOM;
1796
1797 #ifndef PRODUCT
1798 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
1799 #endif
1800 };
1801
1802 //------------------------------TypeKlassPtr-----------------------------------
1803 // Class of Java Klass pointers
1804 class TypeKlassPtr : public TypePtr {
1805 friend class TypeInstKlassPtr;
1806 friend class TypeAryKlassPtr;
1807 friend class TypePtr;
1808 protected:
1809 TypeKlassPtr(TYPES t, PTR ptr, ciKlass* klass, const TypeInterfaces* interfaces, int offset);
1810
1811 virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
1812
1813 public:
1814 virtual bool eq( const Type *t ) const;
1815 virtual uint hash() const;
1816 virtual bool singleton(void) const; // TRUE if type is a singleton
1817
1818 protected:
1819
1820 ciKlass* _klass;
1821 const TypeInterfaces* _interfaces;
1822 const TypeInterfaces* meet_interfaces(const TypeKlassPtr* other) const;
1823 virtual bool must_be_exact() const { ShouldNotReachHere(); return false; }
1824 virtual ciKlass* exact_klass_helper() const;
1825 virtual ciKlass* klass() const { return _klass; }
1826
1827 public:
1828
1829 bool is_java_subtype_of(const TypeKlassPtr* other) const {
1830 return is_java_subtype_of_helper(other, klass_is_exact(), other->klass_is_exact());
1831 }
1832 bool is_same_java_type_as(const TypePtr* other) const {
1833 return is_same_java_type_as_helper(other->is_klassptr());
1834 }
1835
1836 bool maybe_java_subtype_of(const TypeKlassPtr* other) const {
1837 return maybe_java_subtype_of_helper(other, klass_is_exact(), other->klass_is_exact());
1838 }
1839 virtual bool is_same_java_type_as_helper(const TypeKlassPtr* other) const { ShouldNotReachHere(); return false; }
1840 virtual bool is_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const { ShouldNotReachHere(); return false; }
1841 virtual bool maybe_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const { ShouldNotReachHere(); return false; }
1842
1843 // Exact klass, possibly an interface or an array of interface
1844 ciKlass* exact_klass(bool maybe_null = false) const { assert(klass_is_exact(), ""); ciKlass* k = exact_klass_helper(); assert(k != nullptr || maybe_null, ""); return k; }
1845 virtual bool klass_is_exact() const { return _ptr == Constant; }
1846
1847 static const TypeKlassPtr* make(ciKlass* klass, InterfaceHandling interface_handling = ignore_interfaces);
1848 static const TypeKlassPtr *make(PTR ptr, ciKlass* klass, int offset, InterfaceHandling interface_handling = ignore_interfaces);
1849
1850 virtual bool is_loaded() const { return _klass->is_loaded(); }
1851
1852 virtual const TypeKlassPtr* cast_to_ptr_type(PTR ptr) const { ShouldNotReachHere(); return nullptr; }
1853
1854 virtual const TypeKlassPtr *cast_to_exactness(bool klass_is_exact) const { ShouldNotReachHere(); return nullptr; }
1855
1856 // corresponding pointer to instance, for a given class
1857 virtual const TypeOopPtr* as_instance_type(bool klass_change = true) const { ShouldNotReachHere(); return nullptr; }
1858
1859 virtual const TypePtr *add_offset( intptr_t offset ) const { ShouldNotReachHere(); return nullptr; }
1860 virtual const Type *xmeet( const Type *t ) const { ShouldNotReachHere(); return nullptr; }
1861 virtual const Type *xdual() const { ShouldNotReachHere(); return nullptr; }
1862
1863 virtual intptr_t get_con() const;
1864
1865 virtual const TypeKlassPtr* with_offset(intptr_t offset) const { ShouldNotReachHere(); return nullptr; }
1866
1867 virtual const TypeKlassPtr* try_improve() const { return this; }
1868
1869 private:
1870 virtual bool is_meet_subtype_of(const TypePtr* other) const {
1871 return is_meet_subtype_of_helper(other->is_klassptr(), klass_is_exact(), other->is_klassptr()->klass_is_exact());
1872 }
1873
1874 virtual bool is_meet_subtype_of_helper(const TypeKlassPtr* other, bool this_xk, bool other_xk) const {
1875 ShouldNotReachHere(); return false;
1876 }
1877
1878 virtual const TypeInterfaces* interfaces() const {
1879 return _interfaces;
1880 };
1881
1882 const TypeKlassPtr* is_reference_type(const Type* other) const {
1883 return other->isa_klassptr();
1884 }
1885
1886 const TypeAryKlassPtr* is_array_type(const TypeKlassPtr* other) const {
1887 return other->isa_aryklassptr();
1888 }
1889
1890 const TypeInstKlassPtr* is_instance_type(const TypeKlassPtr* other) const {
1891 return other->isa_instklassptr();
1892 }
1893 };
1894
1895 // Instance klass pointer, mirrors TypeInstPtr
1896 class TypeInstKlassPtr : public TypeKlassPtr {
1897
1898 TypeInstKlassPtr(PTR ptr, ciKlass* klass, const TypeInterfaces* interfaces, int offset)
1899 : TypeKlassPtr(InstKlassPtr, ptr, klass, interfaces, offset) {
1900 assert(klass->is_instance_klass() && (!klass->is_loaded() || !klass->is_interface()), "");
1901 }
1902
1903 virtual bool must_be_exact() const;
1904
1905 public:
1906 // Instance klass ignoring any interface
1907 ciInstanceKlass* instance_klass() const {
1908 assert(!klass()->is_interface(), "");
1909 return klass()->as_instance_klass();
1910 }
1911
1912 bool might_be_an_array() const;
1913
1914 bool is_same_java_type_as_helper(const TypeKlassPtr* other) const;
1915 bool is_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const;
1916 bool maybe_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const;
1917
1918 static const TypeInstKlassPtr *make(ciKlass* k, InterfaceHandling interface_handling) {
1919 const TypeInterfaces* interfaces = TypePtr::interfaces(k, true, true, false, interface_handling);
1920 return make(TypePtr::Constant, k, interfaces, 0);
1921 }
1922 static const TypeInstKlassPtr* make(PTR ptr, ciKlass* k, const TypeInterfaces* interfaces, int offset);
1923
1924 static const TypeInstKlassPtr* make(PTR ptr, ciKlass* k, int offset) {
1925 const TypeInterfaces* interfaces = TypePtr::interfaces(k, true, false, false, ignore_interfaces);
1926 return make(ptr, k, interfaces, offset);
1927 }
1928
1929 virtual const TypeInstKlassPtr* cast_to_ptr_type(PTR ptr) const;
1930
1931 virtual const TypeKlassPtr *cast_to_exactness(bool klass_is_exact) const;
1932
1933 // corresponding pointer to instance, for a given class
1934 virtual const TypeOopPtr* as_instance_type(bool klass_change = true) const;
1935 virtual uint hash() const;
1936 virtual bool eq(const Type *t) const;
1937
1938 virtual const TypePtr *add_offset( intptr_t offset ) const;
1939 virtual const Type *xmeet( const Type *t ) const;
1940 virtual const Type *xdual() const;
1941 virtual const TypeInstKlassPtr* with_offset(intptr_t offset) const;
1942
1943 virtual const TypeKlassPtr* try_improve() const;
1944
1945 // Convenience common pre-built types.
1946 static const TypeInstKlassPtr* OBJECT; // Not-null object klass or below
1947 static const TypeInstKlassPtr* OBJECT_OR_NULL; // Maybe-null version of same
1948
1949 #ifndef PRODUCT
1950 virtual void dump2(Dict& d, uint depth, outputStream* st) const;
1951 #endif // PRODUCT
1952
1953 private:
1954 virtual bool is_meet_subtype_of_helper(const TypeKlassPtr* other, bool this_xk, bool other_xk) const;
1955 };
1956
1957 // Array klass pointer, mirrors TypeAryPtr
1958 class TypeAryKlassPtr : public TypeKlassPtr {
1959 friend class TypeInstKlassPtr;
1960 friend class Type;
1961 friend class TypePtr;
1962
1963 const Type *_elem;
1964
1965 static const TypeInterfaces* _array_interfaces;
1966 TypeAryKlassPtr(PTR ptr, const Type *elem, ciKlass* klass, int offset)
1967 : TypeKlassPtr(AryKlassPtr, ptr, klass, _array_interfaces, offset), _elem(elem) {
1968 assert(klass == nullptr || klass->is_type_array_klass() || !klass->as_obj_array_klass()->base_element_klass()->is_interface(), "");
1969 }
1970
1971 virtual ciKlass* exact_klass_helper() const;
1972 // Only guaranteed non null for array of basic types
1973 virtual ciKlass* klass() const;
1974
1975 virtual bool must_be_exact() const;
1976
1977 public:
1978
1979 // returns base element type, an instance klass (and not interface) for object arrays
1980 const Type* base_element_type(int& dims) const;
1981
1982 static const TypeAryKlassPtr *make(PTR ptr, ciKlass* k, int offset, InterfaceHandling interface_handling);
1983
1984 bool is_same_java_type_as_helper(const TypeKlassPtr* other) const;
1985 bool is_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const;
1986 bool maybe_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const;
1987
1988 bool is_loaded() const { return (_elem->isa_klassptr() ? _elem->is_klassptr()->is_loaded() : true); }
1989
1990 static const TypeAryKlassPtr *make(PTR ptr, const Type *elem, ciKlass* k, int offset);
1991 static const TypeAryKlassPtr* make(ciKlass* klass, InterfaceHandling interface_handling);
1992
1993 const Type *elem() const { return _elem; }
1994
1995 virtual bool eq(const Type *t) const;
1996 virtual uint hash() const; // Type specific hashing
1997
1998 virtual const TypeAryKlassPtr* cast_to_ptr_type(PTR ptr) const;
1999
2000 virtual const TypeKlassPtr *cast_to_exactness(bool klass_is_exact) const;
2001
2002 // corresponding pointer to instance, for a given class
2003 virtual const TypeOopPtr* as_instance_type(bool klass_change = true) const;
2004
2005 virtual const TypePtr *add_offset( intptr_t offset ) const;
2006 virtual const Type *xmeet( const Type *t ) const;
2007 virtual const Type *xdual() const; // Compute dual right now.
2008
2009 virtual const TypeAryKlassPtr* with_offset(intptr_t offset) const;
2010
2011 virtual bool empty(void) const {
2012 return TypeKlassPtr::empty() || _elem->empty();
2013 }
2014
2015 #ifndef PRODUCT
2016 virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
2017 #endif
2018 private:
2019 virtual bool is_meet_subtype_of_helper(const TypeKlassPtr* other, bool this_xk, bool other_xk) const;
2020 };
2021
2022 class TypeNarrowPtr : public Type {
2023 protected:
2024 const TypePtr* _ptrtype; // Could be TypePtr::NULL_PTR
2025
2026 TypeNarrowPtr(TYPES t, const TypePtr* ptrtype): Type(t),
2027 _ptrtype(ptrtype) {
2028 assert(ptrtype->offset() == 0 ||
2029 ptrtype->offset() == OffsetBot ||
2030 ptrtype->offset() == OffsetTop, "no real offsets");
2031 }
2032
2033 virtual const TypeNarrowPtr *isa_same_narrowptr(const Type *t) const = 0;
2034 virtual const TypeNarrowPtr *is_same_narrowptr(const Type *t) const = 0;
2130 }
2131
2132 virtual const TypeNarrowPtr *make_hash_same_narrowptr(const TypePtr *t) const {
2133 return (const TypeNarrowPtr*)((new TypeNarrowKlass(t))->hashcons());
2134 }
2135
2136 public:
2137 static const TypeNarrowKlass *make( const TypePtr* type);
2138
2139 // static const TypeNarrowKlass *BOTTOM;
2140 static const TypeNarrowKlass *NULL_PTR;
2141
2142 #ifndef PRODUCT
2143 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
2144 #endif
2145 };
2146
2147 //------------------------------TypeFunc---------------------------------------
2148 // Class of Array Types
2149 class TypeFunc : public Type {
2150 TypeFunc( const TypeTuple *domain, const TypeTuple *range ) : Type(Function), _domain(domain), _range(range) {}
2151 virtual bool eq( const Type *t ) const;
2152 virtual uint hash() const; // Type specific hashing
2153 virtual bool singleton(void) const; // TRUE if type is a singleton
2154 virtual bool empty(void) const; // TRUE if type is vacuous
2155
2156 const TypeTuple* const _domain; // Domain of inputs
2157 const TypeTuple* const _range; // Range of results
2158
2159 public:
2160 // Constants are shared among ADLC and VM
2161 enum { Control = AdlcVMDeps::Control,
2162 I_O = AdlcVMDeps::I_O,
2163 Memory = AdlcVMDeps::Memory,
2164 FramePtr = AdlcVMDeps::FramePtr,
2165 ReturnAdr = AdlcVMDeps::ReturnAdr,
2166 Parms = AdlcVMDeps::Parms
2167 };
2168
2169
2170 // Accessors:
2171 const TypeTuple* domain() const { return _domain; }
2172 const TypeTuple* range() const { return _range; }
2173
2174 static const TypeFunc *make(ciMethod* method);
2175 static const TypeFunc *make(ciSignature signature, const Type* extra);
2176 static const TypeFunc *make(const TypeTuple* domain, const TypeTuple* range);
2177
2178 virtual const Type *xmeet( const Type *t ) const;
2179 virtual const Type *xdual() const; // Compute dual right now.
2180
2181 BasicType return_type() const;
2182
2183 #ifndef PRODUCT
2184 virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
2185 #endif
2186 // Convenience common pre-built types.
2187 };
2188
2189 //------------------------------accessors--------------------------------------
2190 inline bool Type::is_ptr_to_narrowoop() const {
2191 #ifdef _LP64
2192 return (isa_oopptr() != nullptr && is_oopptr()->is_ptr_to_narrowoop_nv());
2193 #else
2194 return false;
2195 #endif
2196 }
2197
2198 inline bool Type::is_ptr_to_narrowklass() const {
2199 #ifdef _LP64
2200 return (isa_oopptr() != nullptr && is_oopptr()->is_ptr_to_narrowklass_nv());
2201 #else
2202 return false;
2439 }
2440
2441 inline const TypeNarrowOop* Type::make_narrowoop() const {
2442 return (_base == NarrowOop) ? is_narrowoop() :
2443 (isa_ptr() ? TypeNarrowOop::make(is_ptr()) : nullptr);
2444 }
2445
2446 inline const TypeNarrowKlass* Type::make_narrowklass() const {
2447 return (_base == NarrowKlass) ? is_narrowklass() :
2448 (isa_ptr() ? TypeNarrowKlass::make(is_ptr()) : nullptr);
2449 }
2450
2451 inline bool Type::is_floatingpoint() const {
2452 if( (_base == HalfFloatCon) || (_base == HalfFloatBot) ||
2453 (_base == FloatCon) || (_base == FloatBot) ||
2454 (_base == DoubleCon) || (_base == DoubleBot) )
2455 return true;
2456 return false;
2457 }
2458
2459 template <>
2460 inline const TypeInt* Type::cast<TypeInt>() const {
2461 return is_int();
2462 }
2463
2464 template <>
2465 inline const TypeLong* Type::cast<TypeLong>() const {
2466 return is_long();
2467 }
2468
2469 template <>
2470 inline const TypeInt* Type::try_cast<TypeInt>() const {
2471 return isa_int();
2472 }
2473
2474 template <>
2475 inline const TypeLong* Type::try_cast<TypeLong>() const {
2476 return isa_long();
2477 }
2478
2484
2485 // For type queries and asserts
2486 #define is_intptr_t is_long
2487 #define isa_intptr_t isa_long
2488 #define find_intptr_t_type find_long_type
2489 #define find_intptr_t_con find_long_con
2490 #define TypeX TypeLong
2491 #define Type_X Type::Long
2492 #define TypeX_X TypeLong::LONG
2493 #define TypeX_ZERO TypeLong::ZERO
2494 // For 'ideal_reg' machine registers
2495 #define Op_RegX Op_RegL
2496 // For phase->intcon variants
2497 #define MakeConX longcon
2498 #define ConXNode ConLNode
2499 // For array index arithmetic
2500 #define MulXNode MulLNode
2501 #define AndXNode AndLNode
2502 #define OrXNode OrLNode
2503 #define CmpXNode CmpLNode
2504 #define SubXNode SubLNode
2505 #define LShiftXNode LShiftLNode
2506 // For object size computation:
2507 #define AddXNode AddLNode
2508 #define RShiftXNode RShiftLNode
2509 // For card marks and hashcodes
2510 #define URShiftXNode URShiftLNode
2511 // For shenandoahSupport
2512 #define LoadXNode LoadLNode
2513 #define StoreXNode StoreLNode
2514 // Opcodes
2515 #define Op_LShiftX Op_LShiftL
2516 #define Op_AndX Op_AndL
2517 #define Op_AddX Op_AddL
2518 #define Op_SubX Op_SubL
2519 #define Op_XorX Op_XorL
2520 #define Op_URShiftX Op_URShiftL
2521 #define Op_LoadX Op_LoadL
2522 // conversions
2523 #define ConvI2X(x) ConvI2L(x)
2524 #define ConvL2X(x) (x)
2525 #define ConvX2I(x) ConvL2I(x)
2526 #define ConvX2L(x) (x)
2527 #define ConvX2UL(x) (x)
2528
2529 #else
2530
2531 // For type queries and asserts
2532 #define is_intptr_t is_int
2533 #define isa_intptr_t isa_int
2534 #define find_intptr_t_type find_int_type
2535 #define find_intptr_t_con find_int_con
2536 #define TypeX TypeInt
2537 #define Type_X Type::Int
2538 #define TypeX_X TypeInt::INT
2539 #define TypeX_ZERO TypeInt::ZERO
2540 // For 'ideal_reg' machine registers
2541 #define Op_RegX Op_RegI
2542 // For phase->intcon variants
2543 #define MakeConX intcon
2544 #define ConXNode ConINode
2545 // For array index arithmetic
2546 #define MulXNode MulINode
2547 #define AndXNode AndINode
2548 #define OrXNode OrINode
2549 #define CmpXNode CmpINode
2550 #define SubXNode SubINode
2551 #define LShiftXNode LShiftINode
2552 // For object size computation:
2553 #define AddXNode AddINode
2554 #define RShiftXNode RShiftINode
2555 // For card marks and hashcodes
2556 #define URShiftXNode URShiftINode
2557 // For shenandoahSupport
2558 #define LoadXNode LoadINode
2559 #define StoreXNode StoreINode
2560 // Opcodes
2561 #define Op_LShiftX Op_LShiftI
2562 #define Op_AndX Op_AndI
2563 #define Op_AddX Op_AddI
2564 #define Op_SubX Op_SubI
2565 #define Op_XorX Op_XorI
2566 #define Op_URShiftX Op_URShiftI
2567 #define Op_LoadX Op_LoadI
2568 // conversions
2569 #define ConvI2X(x) (x)
2570 #define ConvL2X(x) ConvL2I(x)
2571 #define ConvX2I(x) (x)
2572 #define ConvX2L(x) ConvI2L(x)
2573 #define ConvX2UL(x) ConvI2UL(x)
2574
2575 #endif
2576
2577 #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 "opto/compile.hpp"
31 #include "opto/rangeinference.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 TypeH;
51 class TypeInteger;
127 Memory, // Abstract store
128 HalfFloatTop, // No float value
129 HalfFloatCon, // Floating point constant
130 HalfFloatBot, // Any float value
131 FloatTop, // No float value
132 FloatCon, // Floating point constant
133 FloatBot, // Any float value
134 DoubleTop, // No double value
135 DoubleCon, // Double precision constant
136 DoubleBot, // Any double value
137 Bottom, // Bottom of lattice
138 lastype // Bogus ending type (not in lattice)
139 };
140
141 // Signal values for offsets from a base pointer
142 enum OFFSET_SIGNALS {
143 OffsetTop = -2000000000, // undefined offset
144 OffsetBot = -2000000001 // any possible offset
145 };
146
147 class Offset {
148 private:
149 int _offset;
150
151 public:
152 explicit Offset(int offset) : _offset(offset) {}
153
154 const Offset meet(const Offset other) const;
155 const Offset dual() const;
156 const Offset add(intptr_t offset) const;
157 bool operator==(const Offset& other) const {
158 return _offset == other._offset;
159 }
160 bool operator!=(const Offset& other) const {
161 return _offset != other._offset;
162 }
163 int get() const { return _offset; }
164
165 void dump2(outputStream *st) const;
166
167 static const Offset top;
168 static const Offset bottom;
169 };
170
171 // Min and max WIDEN values.
172 enum WIDEN {
173 WidenMin = 0,
174 WidenMax = 3
175 };
176
177 private:
178 typedef struct {
179 TYPES dual_type;
180 BasicType basic_type;
181 const char* msg;
182 bool isa_oop;
183 uint ideal_reg;
184 } TypeInfo;
185
186 // Dictionary of types shared among compilations.
187 static Dict* _shared_type_dict;
188 static const TypeInfo _type_info[];
189
190 static int uhash( const Type *const t );
351 const TypeInstPtr *isa_instptr() const; // Returns null if not InstPtr
352 const TypeInstPtr *is_instptr() const; // Instance
353 const TypeAryPtr *isa_aryptr() const; // Returns null if not AryPtr
354 const TypeAryPtr *is_aryptr() const; // Array oop
355
356 template <typename TypeClass>
357 const TypeClass* cast() const;
358
359 const TypeMetadataPtr *isa_metadataptr() const; // Returns null if not oop ptr type
360 const TypeMetadataPtr *is_metadataptr() const; // Java-style GC'd pointer
361 const TypeKlassPtr *isa_klassptr() const; // Returns null if not KlassPtr
362 const TypeKlassPtr *is_klassptr() const; // assert if not KlassPtr
363 const TypeInstKlassPtr *isa_instklassptr() const; // Returns null if not IntKlassPtr
364 const TypeInstKlassPtr *is_instklassptr() const; // assert if not IntKlassPtr
365 const TypeAryKlassPtr *isa_aryklassptr() const; // Returns null if not AryKlassPtr
366 const TypeAryKlassPtr *is_aryklassptr() const; // assert if not AryKlassPtr
367
368 virtual bool is_finite() const; // Has a finite value
369 virtual bool is_nan() const; // Is not a number (NaN)
370
371 bool is_inlinetypeptr() const;
372 virtual ciInlineKlass* inline_klass() const;
373
374 // Returns this ptr type or the equivalent ptr type for this compressed pointer.
375 const TypePtr* make_ptr() const;
376
377 // Returns this oopptr type or the equivalent oopptr type for this compressed pointer.
378 // Asserts if the underlying type is not an oopptr or narrowoop.
379 const TypeOopPtr* make_oopptr() const;
380
381 // Returns this compressed pointer or the equivalent compressed version
382 // of this pointer type.
383 const TypeNarrowOop* make_narrowoop() const;
384
385 // Returns this compressed klass pointer or the equivalent
386 // compressed version of this pointer type.
387 const TypeNarrowKlass* make_narrowklass() const;
388
389 // Special test for register pressure heuristic
390 bool is_floatingpoint() const; // True if Float or Double base type
391
392 // Do you have memory, directly or through a tuple?
393 bool has_memory( ) const;
490 static const Type* get_typeflow_type(ciType* type);
491
492 static const Type* make_from_constant(ciConstant constant,
493 bool require_constant = false,
494 int stable_dimension = 0,
495 bool is_narrow = false,
496 bool is_autobox_cache = false);
497
498 static const Type* make_constant_from_field(ciInstance* holder,
499 int off,
500 bool is_unsigned_load,
501 BasicType loadbt);
502
503 static const Type* make_constant_from_field(ciField* field,
504 ciInstance* holder,
505 BasicType loadbt,
506 bool is_unsigned_load);
507
508 static const Type* make_constant_from_array_element(ciArray* array,
509 int off,
510 int field_offset,
511 int stable_dimension,
512 BasicType loadbt,
513 bool is_unsigned_load);
514
515 // Speculative type helper methods. See TypePtr.
516 virtual const TypePtr* speculative() const { return nullptr; }
517 virtual ciKlass* speculative_type() const { return nullptr; }
518 virtual ciKlass* speculative_type_not_null() const { return nullptr; }
519 virtual bool speculative_maybe_null() const { return true; }
520 virtual bool speculative_always_null() const { return true; }
521 virtual const Type* remove_speculative() const { return this; }
522 virtual const Type* cleanup_speculative() const { return this; }
523 virtual bool would_improve_type(ciKlass* exact_kls, int inline_depth) const { return exact_kls != nullptr; }
524 virtual bool would_improve_ptr(ProfilePtrKind ptr_kind) const { return ptr_kind == ProfileAlwaysNull || ptr_kind == ProfileNeverNull; }
525 const Type* maybe_remove_speculative(bool include_speculative) const;
526
527 virtual bool maybe_null() const { return true; }
528 virtual bool is_known_instance() const { return false; }
529
530 private:
979 const Type ** const _fields; // Array of field types
980
981 public:
982 virtual bool eq( const Type *t ) const;
983 virtual uint hash() const; // Type specific hashing
984 virtual bool singleton(void) const; // TRUE if type is a singleton
985 virtual bool empty(void) const; // TRUE if type is vacuous
986
987 // Accessors:
988 uint cnt() const { return _cnt; }
989 const Type* field_at(uint i) const {
990 assert(i < _cnt, "oob");
991 return _fields[i];
992 }
993 void set_field_at(uint i, const Type* t) {
994 assert(i < _cnt, "oob");
995 _fields[i] = t;
996 }
997
998 static const TypeTuple *make( uint cnt, const Type **fields );
999 static const TypeTuple *make_range(ciSignature* sig, InterfaceHandling interface_handling = ignore_interfaces, bool ret_vt_fields = false, bool is_call = false);
1000 static const TypeTuple *make_domain(ciMethod* method, InterfaceHandling interface_handling, bool vt_fields_as_args = false);
1001
1002 // Subroutine call type with space allocated for argument types
1003 // Memory for Control, I_O, Memory, FramePtr, and ReturnAdr is allocated implicitly
1004 static const Type **fields( uint arg_cnt );
1005
1006 virtual const Type *xmeet( const Type *t ) const;
1007 virtual const Type *xdual() const; // Compute dual right now.
1008 // Convenience common pre-built types.
1009 static const TypeTuple *IFBOTH;
1010 static const TypeTuple *IFFALSE;
1011 static const TypeTuple *IFTRUE;
1012 static const TypeTuple *IFNEITHER;
1013 static const TypeTuple *LOOPBODY;
1014 static const TypeTuple *MEMBAR;
1015 static const TypeTuple *STORECONDITIONAL;
1016 static const TypeTuple *START_I2C;
1017 static const TypeTuple *INT_PAIR;
1018 static const TypeTuple *LONG_PAIR;
1019 static const TypeTuple *INT_CC_PAIR;
1020 static const TypeTuple *LONG_CC_PAIR;
1021 #ifndef PRODUCT
1022 virtual void dump2( Dict &d, uint, outputStream *st ) const; // Specialized per-Type dumping
1023 #endif
1024 };
1025
1026 //------------------------------TypeAry----------------------------------------
1027 // Class of Array Types
1028 class TypeAry : public Type {
1029 TypeAry(const Type* elem, const TypeInt* size, bool stable, bool flat, bool not_flat, bool not_null_free, bool atomic) : Type(Array),
1030 _elem(elem), _size(size), _stable(stable), _flat(flat), _not_flat(not_flat), _not_null_free(not_null_free), _atomic(atomic) {}
1031 public:
1032 virtual bool eq( const Type *t ) const;
1033 virtual uint hash() const; // Type specific hashing
1034 virtual bool singleton(void) const; // TRUE if type is a singleton
1035 virtual bool empty(void) const; // TRUE if type is vacuous
1036
1037 private:
1038 const Type *_elem; // Element type of array
1039 const TypeInt *_size; // Elements in array
1040 const bool _stable; // Are elements @Stable?
1041
1042 // Inline type array properties
1043 const bool _flat; // Array is flat
1044 const bool _not_flat; // Array is never flat
1045 const bool _not_null_free; // Array is never null-free
1046 const bool _atomic; // Array is atomic
1047
1048 friend class TypeAryPtr;
1049
1050 public:
1051 static const TypeAry* make(const Type* elem, const TypeInt* size, bool stable,
1052 bool flat, bool not_flat, bool not_null_free, bool atomic);
1053
1054 virtual const Type *xmeet( const Type *t ) const;
1055 virtual const Type *xdual() const; // Compute dual right now.
1056 bool ary_must_be_exact() const; // true if arrays of such are never generic
1057 virtual const TypeAry* remove_speculative() const;
1058 virtual const Type* cleanup_speculative() const;
1059 #ifndef PRODUCT
1060 virtual void dump2( Dict &d, uint, outputStream *st ) const; // Specialized per-Type dumping
1061 #endif
1062 };
1063
1064 //------------------------------TypeVect---------------------------------------
1065 // Basic class of vector (mask) types.
1066 class TypeVect : public Type {
1067 const BasicType _elem_bt; // Vector's element type
1068 const uint _length; // Elements in vector (power of 2)
1069
1070 protected:
1071 TypeVect(TYPES t, BasicType elem_bt, uint length) : Type(t),
1072 _elem_bt(elem_bt), _length(length) {}
1191
1192 const Type* xmeet(const Type* t) const;
1193
1194 bool singleton(void) const;
1195 bool has_non_array_interface() const;
1196 };
1197
1198 //------------------------------TypePtr----------------------------------------
1199 // Class of machine Pointer Types: raw data, instances or arrays.
1200 // If the _base enum is AnyPtr, then this refers to all of the above.
1201 // Otherwise the _base will indicate which subset of pointers is affected,
1202 // and the class will be inherited from.
1203 class TypePtr : public Type {
1204 friend class TypeNarrowPtr;
1205 friend class Type;
1206 protected:
1207 static const TypeInterfaces* interfaces(ciKlass*& k, bool klass, bool interface, bool array, InterfaceHandling interface_handling);
1208
1209 public:
1210 enum PTR { TopPTR, AnyNull, Constant, Null, NotNull, BotPTR, lastPTR };
1211
1212 // Only applies to TypeInstPtr and TypeInstKlassPtr. Since the common super class is TypePtr, it is defined here.
1213 //
1214 // FlatInArray defines the following Boolean Lattice structure
1215 //
1216 // TopFlat
1217 // / \
1218 // Flat NotFlat
1219 // \ /
1220 // MaybeFlat
1221 //
1222 // with meet (see TypePtr::meet_flat_in_array()) and join (implemented over dual, see TypePtr::flat_in_array_dual)
1223 enum FlatInArray {
1224 TopFlat, // Dedicated top element and dual of MaybeFlat. Result when joining Flat and NotFlat.
1225 Flat, // An instance is always flat in an array.
1226 NotFlat, // An instance is never flat in an array.
1227 MaybeFlat, // We don't know whether an instance is flat in an array.
1228 Uninitialized // Used when the flat in array property was not computed, yet - should never actually end up in a type.
1229 };
1230 protected:
1231 TypePtr(TYPES t, PTR ptr, Offset offset,
1232 relocInfo::relocType reloc,
1233 const TypePtr* speculative = nullptr,
1234 int inline_depth = InlineDepthBottom) :
1235 Type(t), _speculative(speculative), _inline_depth(inline_depth), _offset(offset),
1236 _ptr(ptr), _reloc(reloc) {}
1237 static const PTR ptr_meet[lastPTR][lastPTR];
1238 static const PTR ptr_dual[lastPTR];
1239 static const char * const ptr_msg[lastPTR];
1240
1241 static const FlatInArray flat_in_array_dual[Uninitialized];
1242 static const char* const flat_in_array_msg[Uninitialized];
1243
1244 enum {
1245 InlineDepthBottom = INT_MAX,
1246 InlineDepthTop = -InlineDepthBottom
1247 };
1248
1249 // Extra type information profiling gave us. We propagate it the
1250 // same way the rest of the type info is propagated. If we want to
1251 // use it, then we have to emit a guard: this part of the type is
1252 // not something we know but something we speculate about the type.
1253 const TypePtr* _speculative;
1254 // For speculative types, we record at what inlining depth the
1255 // profiling point that provided the data is. We want to favor
1256 // profile data coming from outer scopes which are likely better for
1257 // the current compilation.
1258 int _inline_depth;
1259
1260 // utility methods to work on the speculative part of the type
1261 const TypePtr* dual_speculative() const;
1262 const TypePtr* xmeet_speculative(const TypePtr* other) const;
1263 bool eq_speculative(const TypePtr* other) const;
1272 #ifndef PRODUCT
1273 void dump_speculative(outputStream* st) const;
1274 void dump_inline_depth(outputStream* st) const;
1275 void dump_offset(outputStream* st) const;
1276 #endif
1277
1278 // TypeInstPtr (TypeAryPtr resp.) and TypeInstKlassPtr (TypeAryKlassPtr resp.) implement very similar meet logic.
1279 // The logic for meeting 2 instances (2 arrays resp.) is shared in the 2 utility methods below. However the logic for
1280 // the oop and klass versions can be slightly different and extra logic may have to be executed depending on what
1281 // exact case the meet falls into. The MeetResult struct is used by the utility methods to communicate what case was
1282 // encountered so the right logic specific to klasses or oops can be executed.,
1283 enum MeetResult {
1284 QUICK,
1285 UNLOADED,
1286 SUBTYPE,
1287 NOT_SUBTYPE,
1288 LCA
1289 };
1290 template<class T> static TypePtr::MeetResult meet_instptr(PTR& ptr, const TypeInterfaces*& interfaces, const T* this_type,
1291 const T* other_type, ciKlass*& res_klass, bool& res_xk);
1292 protected:
1293 static FlatInArray meet_flat_in_array(FlatInArray left, FlatInArray other);
1294
1295 template<class T> static MeetResult meet_aryptr(PTR& ptr, const Type*& elem, const T* this_ary, const T* other_ary,
1296 ciKlass*& res_klass, bool& res_xk, bool &res_flat, bool &res_not_flat, bool &res_not_null_free, bool &res_atomic);
1297
1298 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);
1299 template <class T1, class T2> static bool is_same_java_type_as_helper_for_instance(const T1* this_one, const T2* other);
1300 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);
1301 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);
1302 template <class T1, class T2> static bool is_same_java_type_as_helper_for_array(const T1* this_one, const T2* other);
1303 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);
1304 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);
1305 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);
1306 public:
1307 const Offset _offset; // Offset into oop, with TOP & BOT
1308 const PTR _ptr; // Pointer equivalence class
1309 const relocInfo::relocType _reloc;
1310
1311 int offset() const { return _offset.get(); }
1312 PTR ptr() const { return _ptr; }
1313 relocInfo::relocType reloc() const { return _reloc; }
1314
1315 static const TypePtr* make(TYPES t, PTR ptr, Offset offset,
1316 const TypePtr* speculative = nullptr,
1317 int inline_depth = InlineDepthBottom,
1318 relocInfo::relocType reloc = relocInfo::none);
1319
1320 // Return a 'ptr' version of this type
1321 virtual const TypePtr* cast_to_ptr_type(PTR ptr) const;
1322
1323 virtual intptr_t get_con() const;
1324
1325 Type::Offset xadd_offset(intptr_t offset) const;
1326 virtual const TypePtr* add_offset(intptr_t offset) const;
1327 virtual const TypePtr* with_offset(intptr_t offset) const;
1328 virtual int flat_offset() const { return offset(); }
1329 virtual bool eq(const Type *t) const;
1330 virtual uint hash() const; // Type specific hashing
1331
1332 virtual bool singleton(void) const; // TRUE if type is a singleton
1333 virtual bool empty(void) const; // TRUE if type is vacuous
1334 virtual const Type *xmeet( const Type *t ) const;
1335 virtual const Type *xmeet_helper( const Type *t ) const;
1336 Offset meet_offset(int offset) const;
1337 Offset dual_offset() const;
1338 virtual const Type *xdual() const; // Compute dual right now.
1339
1340 // meet, dual and join over pointer equivalence sets
1341 PTR meet_ptr( const PTR in_ptr ) const { return ptr_meet[in_ptr][ptr()]; }
1342 PTR dual_ptr() const { return ptr_dual[ptr()]; }
1343
1344 // This is textually confusing unless one recalls that
1345 // join(t) == dual()->meet(t->dual())->dual().
1346 PTR join_ptr( const PTR in_ptr ) const {
1347 return ptr_dual[ ptr_meet[ ptr_dual[in_ptr] ] [ dual_ptr() ] ];
1348 }
1349
1350 // Speculative type helper methods.
1351 virtual const TypePtr* speculative() const { return _speculative; }
1352 int inline_depth() const { return _inline_depth; }
1353 virtual ciKlass* speculative_type() const;
1354 virtual ciKlass* speculative_type_not_null() const;
1355 virtual bool speculative_maybe_null() const;
1356 virtual bool speculative_always_null() const;
1357 virtual const TypePtr* remove_speculative() const;
1358 virtual const Type* cleanup_speculative() const;
1359 virtual bool would_improve_type(ciKlass* exact_kls, int inline_depth) const;
1360 virtual bool would_improve_ptr(ProfilePtrKind maybe_null) const;
1361 virtual const TypePtr* with_inline_depth(int depth) const;
1362
1363 virtual bool maybe_null() const { return meet_ptr(Null) == ptr(); }
1364
1365 NOT_PRODUCT(static void dump_flat_in_array(FlatInArray flat_in_array, outputStream* st);)
1366
1367 static FlatInArray compute_flat_in_array(ciInstanceKlass* instance_klass, bool is_exact);
1368
1369 static FlatInArray compute_flat_in_array_if_unknown(ciInstanceKlass* instance_klass, bool is_exact,
1370 FlatInArray old_flat_in_array);
1371
1372 virtual bool can_be_inline_type() const { return false; }
1373 virtual bool is_flat_in_array() const { return flat_in_array() == Flat; }
1374 virtual bool is_not_flat_in_array() const { return flat_in_array() == NotFlat; }
1375 virtual FlatInArray flat_in_array() const { return NotFlat; }
1376 virtual bool is_flat() const { return false; }
1377 virtual bool is_not_flat() const { return false; }
1378 virtual bool is_null_free() const { return false; }
1379 virtual bool is_not_null_free() const { return false; }
1380 virtual bool is_atomic() const { return false; }
1381
1382 // Tests for relation to centerline of type lattice:
1383 static bool above_centerline(PTR ptr) { return (ptr <= AnyNull); }
1384 static bool below_centerline(PTR ptr) { return (ptr >= NotNull); }
1385 // Convenience common pre-built types.
1386 static const TypePtr *NULL_PTR;
1387 static const TypePtr *NOTNULL;
1388 static const TypePtr *BOTTOM;
1389 #ifndef PRODUCT
1390 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
1391 #endif
1392 };
1393
1394 //------------------------------TypeRawPtr-------------------------------------
1395 // Class of raw pointers, pointers to things other than Oops. Examples
1396 // include the stack pointer, top of heap, card-marking area, handles, etc.
1397 class TypeRawPtr : public TypePtr {
1398 protected:
1399 TypeRawPtr(PTR ptr, address bits, relocInfo::relocType reloc) : TypePtr(RawPtr, ptr, Offset(0), reloc), _bits(bits){}
1400 public:
1401 virtual bool eq( const Type *t ) const;
1402 virtual uint hash() const; // Type specific hashing
1403
1404 const address _bits; // Constant value, if applicable
1405
1406 static const TypeRawPtr* make(PTR ptr);
1407 static const TypeRawPtr* make(address bits, relocInfo::relocType reloc = relocInfo::external_word_type);
1408
1409 // Return a 'ptr' version of this type
1410 virtual const TypeRawPtr* cast_to_ptr_type(PTR ptr) const;
1411
1412 virtual intptr_t get_con() const;
1413
1414 virtual const TypePtr* add_offset(intptr_t offset) const;
1415 virtual const TypeRawPtr* with_offset(intptr_t offset) const { ShouldNotReachHere(); return nullptr;}
1416
1417 virtual const Type *xmeet( const Type *t ) const;
1418 virtual const Type *xdual() const; // Compute dual right now.
1419 // Convenience common pre-built types.
1420 static const TypeRawPtr *BOTTOM;
1421 static const TypeRawPtr *NOTNULL;
1422 #ifndef PRODUCT
1423 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
1424 #endif
1425 };
1426
1427 //------------------------------TypeOopPtr-------------------------------------
1428 // Some kind of oop (Java pointer), either instance or array.
1429 class TypeOopPtr : public TypePtr {
1430 friend class TypeAry;
1431 friend class TypePtr;
1432 friend class TypeInstPtr;
1433 friend class TypeAryPtr;
1434 protected:
1435 TypeOopPtr(TYPES t, PTR ptr, ciKlass* k, const TypeInterfaces* interfaces, bool xk, ciObject* o, Offset offset, Offset field_offset, int instance_id,
1436 const TypePtr* speculative, int inline_depth);
1437 public:
1438 virtual bool eq( const Type *t ) const;
1439 virtual uint hash() const; // Type specific hashing
1440 virtual bool singleton(void) const; // TRUE if type is a singleton
1441 enum {
1442 InstanceTop = -1, // undefined instance
1443 InstanceBot = 0 // any possible instance
1444 };
1445 protected:
1446
1447 // Oop is null, unless this is a constant oop.
1448 ciObject* _const_oop; // Constant oop
1449 // If _klass is null, then so is _sig. This is an unloaded klass.
1450 ciKlass* _klass; // Klass object
1451
1452 const TypeInterfaces* _interfaces;
1453
1454 // Does the type exclude subclasses of the klass? (Inexact == polymorphic.)
1455 bool _klass_is_exact;
1456 bool _is_ptr_to_narrowoop;
1457 bool _is_ptr_to_narrowklass;
1458 bool _is_ptr_to_boxed_value;
1459 bool _is_ptr_to_strict_final_field;
1460
1461 // If not InstanceTop or InstanceBot, indicates that this is
1462 // a particular instance of this type which is distinct.
1463 // This is the node index of the allocation node creating this instance.
1464 int _instance_id;
1465
1466 static const TypeOopPtr* make_from_klass_common(ciKlass* klass, bool klass_change, bool try_for_exact, InterfaceHandling interface_handling);
1467
1468 int dual_instance_id() const;
1469 int meet_instance_id(int uid) const;
1470
1471 const TypeInterfaces* meet_interfaces(const TypeOopPtr* other) const;
1472
1473 // Do not allow interface-vs.-noninterface joins to collapse to top.
1474 virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
1475
1476 virtual ciKlass* exact_klass_helper() const { return nullptr; }
1477 virtual ciKlass* klass() const { return _klass; }
1478
1479 #ifndef PRODUCT
1480 void dump_instance_id(outputStream* st) const;
1481 #endif // PRODUCT
1482
1483 public:
1484
1485 bool is_java_subtype_of(const TypeOopPtr* other) const {
1486 return is_java_subtype_of_helper(other, klass_is_exact(), other->klass_is_exact());
1487 }
1488
1489 bool is_same_java_type_as(const TypePtr* other) const {
1490 return is_same_java_type_as_helper(other->is_oopptr());
1491 }
1492
1493 virtual bool is_same_java_type_as_helper(const TypeOopPtr* other) const {
1494 ShouldNotReachHere(); return false;
1495 }
1496
1497 bool maybe_java_subtype_of(const TypeOopPtr* other) const {
1508 return make_from_klass_common(klass, true, false, interface_handling);
1509 }
1510 // Same as before, but will produce an exact type, even if
1511 // the klass is not final, as long as it has exactly one implementation.
1512 static const TypeOopPtr* make_from_klass_unique(ciKlass* klass, InterfaceHandling interface_handling= ignore_interfaces) {
1513 return make_from_klass_common(klass, true, true, interface_handling);
1514 }
1515 // Same as before, but does not respects UseUniqueSubclasses.
1516 // Use this only for creating array element types.
1517 static const TypeOopPtr* make_from_klass_raw(ciKlass* klass, InterfaceHandling interface_handling = ignore_interfaces) {
1518 return make_from_klass_common(klass, false, false, interface_handling);
1519 }
1520 // Creates a singleton type given an object.
1521 // If the object cannot be rendered as a constant,
1522 // may return a non-singleton type.
1523 // If require_constant, produce a null if a singleton is not possible.
1524 static const TypeOopPtr* make_from_constant(ciObject* o,
1525 bool require_constant = false);
1526
1527 // Make a generic (unclassed) pointer to an oop.
1528 static const TypeOopPtr* make(PTR ptr, Offset offset, int instance_id,
1529 const TypePtr* speculative = nullptr,
1530 int inline_depth = InlineDepthBottom);
1531
1532 ciObject* const_oop() const { return _const_oop; }
1533 // Exact klass, possibly an interface or an array of interface
1534 ciKlass* exact_klass(bool maybe_null = false) const { assert(klass_is_exact(), ""); ciKlass* k = exact_klass_helper(); assert(k != nullptr || maybe_null, ""); return k; }
1535 ciKlass* unloaded_klass() const { assert(!is_loaded(), "only for unloaded types"); return klass(); }
1536
1537 virtual bool is_loaded() const { return klass()->is_loaded(); }
1538 virtual bool klass_is_exact() const { return _klass_is_exact; }
1539
1540 // Returns true if this pointer points at memory which contains a
1541 // compressed oop references.
1542 bool is_ptr_to_narrowoop_nv() const { return _is_ptr_to_narrowoop; }
1543 bool is_ptr_to_narrowklass_nv() const { return _is_ptr_to_narrowklass; }
1544 bool is_ptr_to_boxed_value() const { return _is_ptr_to_boxed_value; }
1545 bool is_ptr_to_strict_final_field() const { return _is_ptr_to_strict_final_field; }
1546 bool is_known_instance() const { return _instance_id > 0; }
1547 int instance_id() const { return _instance_id; }
1548 bool is_known_instance_field() const { return is_known_instance() && _offset.get() >= 0; }
1549
1550 virtual bool can_be_inline_type() const { return (_klass == nullptr || _klass->can_be_inline_klass(_klass_is_exact)); }
1551 virtual bool can_be_inline_array() const { ShouldNotReachHere(); return false; }
1552
1553 virtual intptr_t get_con() const;
1554
1555 virtual const TypeOopPtr* cast_to_ptr_type(PTR ptr) const;
1556
1557 virtual const TypeOopPtr* cast_to_exactness(bool klass_is_exact) const;
1558
1559 virtual const TypeOopPtr *cast_to_instance_id(int instance_id) const;
1560
1561 // corresponding pointer to klass, for a given instance
1562 virtual const TypeKlassPtr* as_klass_type(bool try_for_exact = false) const;
1563
1564 virtual const TypeOopPtr* with_offset(intptr_t offset) const;
1565 virtual const TypePtr* add_offset(intptr_t offset) const;
1566
1567 // Speculative type helper methods.
1568 virtual const TypeOopPtr* remove_speculative() const;
1569 virtual const Type* cleanup_speculative() const;
1570 virtual bool would_improve_type(ciKlass* exact_kls, int inline_depth) const;
1571 virtual const TypePtr* with_inline_depth(int depth) const;
1594 return _interfaces;
1595 };
1596
1597 const TypeOopPtr* is_reference_type(const Type* other) const {
1598 return other->isa_oopptr();
1599 }
1600
1601 const TypeAryPtr* is_array_type(const TypeOopPtr* other) const {
1602 return other->isa_aryptr();
1603 }
1604
1605 const TypeInstPtr* is_instance_type(const TypeOopPtr* other) const {
1606 return other->isa_instptr();
1607 }
1608 };
1609
1610 //------------------------------TypeInstPtr------------------------------------
1611 // Class of Java object pointers, pointing either to non-array Java instances
1612 // or to a Klass* (including array klasses).
1613 class TypeInstPtr : public TypeOopPtr {
1614 // Can this instance be in a flat array?
1615 FlatInArray _flat_in_array;
1616
1617 TypeInstPtr(PTR ptr, ciKlass* k, const TypeInterfaces* interfaces, bool xk, ciObject* o, Offset offset,
1618 FlatInArray flat_in_array, int instance_id, const TypePtr* speculative,
1619 int inline_depth);
1620 virtual bool eq( const Type *t ) const;
1621 virtual uint hash() const; // Type specific hashing
1622 ciKlass* exact_klass_helper() const;
1623
1624 public:
1625
1626 // Instance klass, ignoring any interface
1627 ciInstanceKlass* instance_klass() const {
1628 assert(!(klass()->is_loaded() && klass()->is_interface()), "");
1629 return klass()->as_instance_klass();
1630 }
1631
1632 bool is_same_java_type_as_helper(const TypeOopPtr* other) const;
1633 bool is_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const;
1634 bool maybe_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const;
1635
1636 // Make a pointer to a constant oop.
1637 static const TypeInstPtr *make(ciObject* o) {
1638 ciKlass* k = o->klass();
1639 const TypeInterfaces* interfaces = TypePtr::interfaces(k, true, false, false, ignore_interfaces);
1640 return make(TypePtr::Constant, k, interfaces, true, o, Offset(0));
1641 }
1642 // Make a pointer to a constant oop with offset.
1643 static const TypeInstPtr *make(ciObject* o, Offset offset) {
1644 ciKlass* k = o->klass();
1645 const TypeInterfaces* interfaces = TypePtr::interfaces(k, true, false, false, ignore_interfaces);
1646 return make(TypePtr::Constant, k, interfaces, true, o, offset);
1647 }
1648
1649 // Make a pointer to some value of type klass.
1650 static const TypeInstPtr *make(PTR ptr, ciKlass* klass, InterfaceHandling interface_handling = ignore_interfaces) {
1651 const TypeInterfaces* interfaces = TypePtr::interfaces(klass, true, true, false, interface_handling);
1652 return make(ptr, klass, interfaces, false, nullptr, Offset(0));
1653 }
1654
1655 // Make a pointer to some non-polymorphic value of exactly type klass.
1656 static const TypeInstPtr *make_exact(PTR ptr, ciKlass* klass) {
1657 const TypeInterfaces* interfaces = TypePtr::interfaces(klass, true, false, false, ignore_interfaces);
1658 return make(ptr, klass, interfaces, true, nullptr, Offset(0));
1659 }
1660
1661 // Make a pointer to some value of type klass with offset.
1662 static const TypeInstPtr *make(PTR ptr, ciKlass* klass, Offset offset) {
1663 const TypeInterfaces* interfaces = TypePtr::interfaces(klass, true, false, false, ignore_interfaces);
1664 return make(ptr, klass, interfaces, false, nullptr, offset);
1665 }
1666
1667 // Make a pointer to an oop.
1668 static const TypeInstPtr* make(PTR ptr, ciKlass* k, const TypeInterfaces* interfaces, bool xk, ciObject* o, Offset offset,
1669 FlatInArray flat_in_array = Uninitialized,
1670 int instance_id = InstanceBot,
1671 const TypePtr* speculative = nullptr,
1672 int inline_depth = InlineDepthBottom);
1673
1674 static const TypeInstPtr *make(PTR ptr, ciKlass* k, bool xk, ciObject* o, Offset offset, int instance_id = InstanceBot,
1675 FlatInArray flat_in_array = Uninitialized) {
1676 const TypeInterfaces* interfaces = TypePtr::interfaces(k, true, false, false, ignore_interfaces);
1677 return make(ptr, k, interfaces, xk, o, offset, flat_in_array, instance_id);
1678 }
1679
1680 // If this is a java.lang.Class constant, return the type for it or null.
1681 // Pass to Type::get_const_type to turn it to a type, which will usually
1682 // be a TypeInstPtr, but may also be a TypeInt::INT for int.class, etc.
1683 ciType* java_mirror_type() const;
1684
1685 virtual const TypeInstPtr* cast_to_ptr_type(PTR ptr) const;
1686
1687 virtual const TypeInstPtr* cast_to_exactness(bool klass_is_exact) const;
1688
1689 virtual const TypeInstPtr* cast_to_instance_id(int instance_id) const;
1690
1691 virtual bool empty() const;
1692 virtual const TypePtr* add_offset(intptr_t offset) const;
1693 virtual const TypeInstPtr* with_offset(intptr_t offset) const;
1694
1695 // Speculative type helper methods.
1696 virtual const TypeInstPtr* remove_speculative() const;
1697 const TypeInstPtr* with_speculative(const TypePtr* speculative) const;
1698 virtual const TypePtr* with_inline_depth(int depth) const;
1699 virtual const TypePtr* with_instance_id(int instance_id) const;
1700
1701 virtual const TypeInstPtr* cast_to_flat_in_array() const;
1702 virtual const TypeInstPtr* cast_to_maybe_flat_in_array() const;
1703 virtual FlatInArray flat_in_array() const { return _flat_in_array; }
1704
1705 FlatInArray dual_flat_in_array() const {
1706 return flat_in_array_dual[_flat_in_array];
1707 }
1708
1709 // the core of the computation of the meet of 2 types
1710 virtual const Type *xmeet_helper(const Type *t) const;
1711 virtual const TypeInstPtr *xmeet_unloaded(const TypeInstPtr *tinst, const TypeInterfaces* interfaces) const;
1712 virtual const Type *xdual() const; // Compute dual right now.
1713
1714 const TypeKlassPtr* as_klass_type(bool try_for_exact = false) const;
1715
1716 virtual bool can_be_inline_array() const;
1717
1718 // Convenience common pre-built types.
1719 static const TypeInstPtr *NOTNULL;
1720 static const TypeInstPtr *BOTTOM;
1721 static const TypeInstPtr *MIRROR;
1722 static const TypeInstPtr *MARK;
1723 static const TypeInstPtr *KLASS;
1724 #ifndef PRODUCT
1725 virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
1726 #endif
1727
1728 private:
1729 virtual bool is_meet_subtype_of_helper(const TypeOopPtr* other, bool this_xk, bool other_xk) const;
1730
1731 virtual bool is_meet_same_type_as(const TypePtr* other) const {
1732 return _klass->equals(other->is_instptr()->_klass) && _interfaces->eq(other->is_instptr()->_interfaces);
1733 }
1734
1735 };
1736
1737 //------------------------------TypeAryPtr-------------------------------------
1738 // Class of Java array pointers
1739 class TypeAryPtr : public TypeOopPtr {
1740 friend class Type;
1741 friend class TypePtr;
1742 friend class TypeInstPtr;
1743 friend class TypeInterfaces;
1744
1745 TypeAryPtr(PTR ptr, ciObject* o, const TypeAry *ary, ciKlass* k, bool xk,
1746 Offset offset, Offset field_offset, int instance_id, bool is_autobox_cache,
1747 const TypePtr* speculative, int inline_depth)
1748 : TypeOopPtr(AryPtr, ptr, k, _array_interfaces, xk, o, offset, field_offset, instance_id, speculative, inline_depth),
1749 _ary(ary),
1750 _is_autobox_cache(is_autobox_cache),
1751 _field_offset(field_offset)
1752 {
1753 int dummy;
1754 bool top_or_bottom = (base_element_type(dummy) == Type::TOP || base_element_type(dummy) == Type::BOTTOM);
1755
1756 if (UseCompressedOops && (elem()->make_oopptr() != nullptr && !top_or_bottom) &&
1757 _offset.get() != 0 && _offset.get() != arrayOopDesc::length_offset_in_bytes() &&
1758 _offset.get() != arrayOopDesc::klass_offset_in_bytes()) {
1759 _is_ptr_to_narrowoop = true;
1760 }
1761
1762 }
1763 virtual bool eq( const Type *t ) const;
1764 virtual uint hash() const; // Type specific hashing
1765 const TypeAry *_ary; // Array we point into
1766 const bool _is_autobox_cache;
1767 // For flat inline type arrays, each field of the inline type in
1768 // the array has its own memory slice so we need to keep track of
1769 // which field is accessed
1770 const Offset _field_offset;
1771 Offset meet_field_offset(const Type::Offset offset) const;
1772 Offset dual_field_offset() const;
1773
1774 ciKlass* compute_klass() const;
1775
1776 // A pointer to delay allocation to Type::Initialize_shared()
1777
1778 static const TypeInterfaces* _array_interfaces;
1779 ciKlass* exact_klass_helper() const;
1780 // Only guaranteed non null for array of basic types
1781 ciKlass* klass() const;
1782
1783 public:
1784
1785 bool is_same_java_type_as_helper(const TypeOopPtr* other) const;
1786 bool is_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const;
1787 bool maybe_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const;
1788
1789 // returns base element type, an instance klass (and not interface) for object arrays
1790 const Type* base_element_type(int& dims) const;
1791
1792 // Accessors
1793 bool is_loaded() const { return (_ary->_elem->make_oopptr() ? _ary->_elem->make_oopptr()->is_loaded() : true); }
1794
1795 const TypeAry* ary() const { return _ary; }
1796 const Type* elem() const { return _ary->_elem; }
1797 const TypeInt* size() const { return _ary->_size; }
1798 bool is_stable() const { return _ary->_stable; }
1799
1800 // Inline type array properties
1801 bool is_flat() const { return _ary->_flat; }
1802 bool is_not_flat() const { return _ary->_not_flat; }
1803 bool is_null_free() const { return _ary->_elem->make_ptr() != nullptr && (_ary->_elem->make_ptr()->ptr() == NotNull || _ary->_elem->make_ptr()->ptr() == AnyNull); }
1804 bool is_not_null_free() const { return _ary->_not_null_free; }
1805 bool is_atomic() const { return _ary->_atomic; }
1806
1807 bool is_autobox_cache() const { return _is_autobox_cache; }
1808
1809 static const TypeAryPtr* make(PTR ptr, const TypeAry *ary, ciKlass* k, bool xk, Offset offset,
1810 Offset field_offset = Offset::bottom,
1811 int instance_id = InstanceBot,
1812 const TypePtr* speculative = nullptr,
1813 int inline_depth = InlineDepthBottom);
1814 // Constant pointer to array
1815 static const TypeAryPtr* make(PTR ptr, ciObject* o, const TypeAry *ary, ciKlass* k, bool xk, Offset offset,
1816 Offset field_offset = Offset::bottom,
1817 int instance_id = InstanceBot,
1818 const TypePtr* speculative = nullptr,
1819 int inline_depth = InlineDepthBottom,
1820 bool is_autobox_cache = false);
1821
1822 // Return a 'ptr' version of this type
1823 virtual const TypeAryPtr* cast_to_ptr_type(PTR ptr) const;
1824
1825 virtual const TypeAryPtr* cast_to_exactness(bool klass_is_exact) const;
1826
1827 virtual const TypeAryPtr* cast_to_instance_id(int instance_id) const;
1828
1829 virtual const TypeAryPtr* cast_to_size(const TypeInt* size) const;
1830 virtual const TypeInt* narrow_size_type(const TypeInt* size) const;
1831
1832 virtual bool empty(void) const; // TRUE if type is vacuous
1833 virtual const TypePtr *add_offset( intptr_t offset ) const;
1834 virtual const TypeAryPtr *with_offset( intptr_t offset ) const;
1835 const TypeAryPtr* with_ary(const TypeAry* ary) const;
1836
1837 // Speculative type helper methods.
1838 virtual const TypeAryPtr* remove_speculative() const;
1839 virtual const Type* cleanup_speculative() const;
1840 virtual const TypePtr* with_inline_depth(int depth) const;
1841 virtual const TypePtr* with_instance_id(int instance_id) const;
1842
1843 // the core of the computation of the meet of 2 types
1844 virtual const Type *xmeet_helper(const Type *t) const;
1845 virtual const Type *xdual() const; // Compute dual right now.
1846
1847 // Inline type array properties
1848 const TypeAryPtr* cast_to_flat(bool flat) const;
1849 const TypeAryPtr* cast_to_not_flat(bool not_flat = true) const;
1850 const TypeAryPtr* cast_to_null_free(bool null_free) const;
1851 const TypeAryPtr* cast_to_not_null_free(bool not_null_free = true) const;
1852 const TypeAryPtr* update_properties(const TypeAryPtr* new_type) const;
1853 jint flat_layout_helper() const;
1854 int flat_elem_size() const;
1855 int flat_log_elem_size() const;
1856
1857 const TypeAryPtr* cast_to_stable(bool stable, int stable_dimension = 1) const;
1858 int stable_dimension() const;
1859
1860 const TypeAryPtr* cast_to_autobox_cache() const;
1861
1862 static jint max_array_length(BasicType etype);
1863
1864 int flat_offset() const;
1865 const Offset field_offset() const { return _field_offset; }
1866 const TypeAryPtr* with_field_offset(int offset) const;
1867 const TypePtr* add_field_offset_and_offset(intptr_t offset) const;
1868
1869 virtual bool can_be_inline_type() const { return false; }
1870 virtual const TypeKlassPtr* as_klass_type(bool try_for_exact = false) const;
1871
1872 virtual bool can_be_inline_array() const;
1873
1874 // Convenience common pre-built types.
1875 static const TypeAryPtr* BOTTOM;
1876 static const TypeAryPtr *RANGE;
1877 static const TypeAryPtr *OOPS;
1878 static const TypeAryPtr *NARROWOOPS;
1879 static const TypeAryPtr *BYTES;
1880 static const TypeAryPtr *SHORTS;
1881 static const TypeAryPtr *CHARS;
1882 static const TypeAryPtr *INTS;
1883 static const TypeAryPtr *LONGS;
1884 static const TypeAryPtr *FLOATS;
1885 static const TypeAryPtr *DOUBLES;
1886 static const TypeAryPtr *INLINES;
1887 // selects one of the above:
1888 static const TypeAryPtr *get_array_body_type(BasicType elem) {
1889 assert((uint)elem <= T_CONFLICT && _array_body_type[elem] != nullptr, "bad elem type");
1890 return _array_body_type[elem];
1891 }
1892 static const TypeAryPtr *_array_body_type[T_CONFLICT+1];
1893 // sharpen the type of an int which is used as an array size
1894 #ifndef PRODUCT
1895 virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
1896 #endif
1897 private:
1898 virtual bool is_meet_subtype_of_helper(const TypeOopPtr* other, bool this_xk, bool other_xk) const;
1899 };
1900
1901 //------------------------------TypeMetadataPtr-------------------------------------
1902 // Some kind of metadata, either Method*, MethodData* or CPCacheOop
1903 class TypeMetadataPtr : public TypePtr {
1904 protected:
1905 TypeMetadataPtr(PTR ptr, ciMetadata* metadata, Offset offset);
1906 // Do not allow interface-vs.-noninterface joins to collapse to top.
1907 virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
1908 public:
1909 virtual bool eq( const Type *t ) const;
1910 virtual uint hash() const; // Type specific hashing
1911 virtual bool singleton(void) const; // TRUE if type is a singleton
1912
1913 private:
1914 ciMetadata* _metadata;
1915
1916 public:
1917 static const TypeMetadataPtr* make(PTR ptr, ciMetadata* m, Offset offset);
1918
1919 static const TypeMetadataPtr* make(ciMethod* m);
1920 static const TypeMetadataPtr* make(ciMethodData* m);
1921
1922 ciMetadata* metadata() const { return _metadata; }
1923
1924 virtual const TypeMetadataPtr* cast_to_ptr_type(PTR ptr) const;
1925
1926 virtual const TypePtr *add_offset( intptr_t offset ) const;
1927
1928 virtual const Type *xmeet( const Type *t ) const;
1929 virtual const Type *xdual() const; // Compute dual right now.
1930
1931 virtual intptr_t get_con() const;
1932
1933 // Convenience common pre-built types.
1934 static const TypeMetadataPtr *BOTTOM;
1935
1936 #ifndef PRODUCT
1937 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
1938 #endif
1939 };
1940
1941 //------------------------------TypeKlassPtr-----------------------------------
1942 // Class of Java Klass pointers
1943 class TypeKlassPtr : public TypePtr {
1944 friend class TypeInstKlassPtr;
1945 friend class TypeAryKlassPtr;
1946 friend class TypePtr;
1947 protected:
1948 TypeKlassPtr(TYPES t, PTR ptr, ciKlass* klass, const TypeInterfaces* interfaces, Offset offset);
1949
1950 virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
1951
1952 public:
1953 virtual bool eq( const Type *t ) const;
1954 virtual uint hash() const;
1955 virtual bool singleton(void) const; // TRUE if type is a singleton
1956
1957 protected:
1958
1959 ciKlass* _klass;
1960 const TypeInterfaces* _interfaces;
1961 const TypeInterfaces* meet_interfaces(const TypeKlassPtr* other) const;
1962 virtual bool must_be_exact() const { ShouldNotReachHere(); return false; }
1963 virtual ciKlass* exact_klass_helper() const;
1964 virtual ciKlass* klass() const { return _klass; }
1965
1966 public:
1967
1968 bool is_java_subtype_of(const TypeKlassPtr* other) const {
1969 return is_java_subtype_of_helper(other, klass_is_exact(), other->klass_is_exact());
1970 }
1971 bool is_same_java_type_as(const TypePtr* other) const {
1972 return is_same_java_type_as_helper(other->is_klassptr());
1973 }
1974
1975 bool maybe_java_subtype_of(const TypeKlassPtr* other) const {
1976 return maybe_java_subtype_of_helper(other, klass_is_exact(), other->klass_is_exact());
1977 }
1978 virtual bool is_same_java_type_as_helper(const TypeKlassPtr* other) const { ShouldNotReachHere(); return false; }
1979 virtual bool is_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const { ShouldNotReachHere(); return false; }
1980 virtual bool maybe_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const { ShouldNotReachHere(); return false; }
1981
1982 // Exact klass, possibly an interface or an array of interface
1983 ciKlass* exact_klass(bool maybe_null = false) const { assert(klass_is_exact(), ""); ciKlass* k = exact_klass_helper(); assert(k != nullptr || maybe_null, ""); return k; }
1984 virtual bool klass_is_exact() const { return _ptr == Constant; }
1985
1986 static const TypeKlassPtr* make(ciKlass* klass, InterfaceHandling interface_handling = ignore_interfaces);
1987
1988 virtual bool is_loaded() const { return _klass->is_loaded(); }
1989
1990 virtual const TypeKlassPtr* cast_to_ptr_type(PTR ptr) const { ShouldNotReachHere(); return nullptr; }
1991
1992 virtual const TypeKlassPtr *cast_to_exactness(bool klass_is_exact) const { ShouldNotReachHere(); return nullptr; }
1993
1994 // corresponding pointer to instance, for a given class
1995 virtual const TypeOopPtr* as_instance_type(bool klass_change = true) const { ShouldNotReachHere(); return nullptr; }
1996
1997 virtual const TypePtr *add_offset( intptr_t offset ) const { ShouldNotReachHere(); return nullptr; }
1998 virtual const Type *xmeet( const Type *t ) const { ShouldNotReachHere(); return nullptr; }
1999 virtual const Type *xdual() const { ShouldNotReachHere(); return nullptr; }
2000
2001 virtual intptr_t get_con() const;
2002
2003 virtual const TypeKlassPtr* with_offset(intptr_t offset) const { ShouldNotReachHere(); return nullptr; }
2004
2005 virtual bool can_be_inline_array() const { ShouldNotReachHere(); return false; }
2006
2007 virtual const TypeKlassPtr* try_improve() const { return this; }
2008
2009 private:
2010 virtual bool is_meet_subtype_of(const TypePtr* other) const {
2011 return is_meet_subtype_of_helper(other->is_klassptr(), klass_is_exact(), other->is_klassptr()->klass_is_exact());
2012 }
2013
2014 virtual bool is_meet_subtype_of_helper(const TypeKlassPtr* other, bool this_xk, bool other_xk) const {
2015 ShouldNotReachHere(); return false;
2016 }
2017
2018 virtual const TypeInterfaces* interfaces() const {
2019 return _interfaces;
2020 };
2021
2022 const TypeKlassPtr* is_reference_type(const Type* other) const {
2023 return other->isa_klassptr();
2024 }
2025
2026 const TypeAryKlassPtr* is_array_type(const TypeKlassPtr* other) const {
2027 return other->isa_aryklassptr();
2028 }
2029
2030 const TypeInstKlassPtr* is_instance_type(const TypeKlassPtr* other) const {
2031 return other->isa_instklassptr();
2032 }
2033 };
2034
2035 // Instance klass pointer, mirrors TypeInstPtr
2036 class TypeInstKlassPtr : public TypeKlassPtr {
2037 // Can an instance of this class be in a flat array?
2038 const FlatInArray _flat_in_array;
2039
2040 TypeInstKlassPtr(PTR ptr, ciKlass* klass, const TypeInterfaces* interfaces, Offset offset, FlatInArray flat_in_array)
2041 : TypeKlassPtr(InstKlassPtr, ptr, klass, interfaces, offset), _flat_in_array(flat_in_array) {
2042 assert(flat_in_array != Uninitialized, "must be set now");
2043 assert(klass->is_instance_klass() && (!klass->is_loaded() || !klass->is_interface()), "");
2044 }
2045
2046 virtual bool must_be_exact() const;
2047
2048 public:
2049 // Instance klass ignoring any interface
2050 ciInstanceKlass* instance_klass() const {
2051 assert(!klass()->is_interface(), "");
2052 return klass()->as_instance_klass();
2053 }
2054
2055 bool might_be_an_array() const;
2056
2057 bool is_same_java_type_as_helper(const TypeKlassPtr* other) const;
2058 bool is_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const;
2059 bool maybe_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const;
2060
2061 virtual bool can_be_inline_type() const { return (_klass == nullptr || _klass->can_be_inline_klass(klass_is_exact())); }
2062
2063 static const TypeInstKlassPtr *make(ciKlass* k, InterfaceHandling interface_handling) {
2064 const TypeInterfaces* interfaces = TypePtr::interfaces(k, true, true, false, interface_handling);
2065 return make(TypePtr::Constant, k, interfaces, Offset(0));
2066 }
2067
2068 static const TypeInstKlassPtr* make(PTR ptr, ciKlass* k, const TypeInterfaces* interfaces, Offset offset,
2069 FlatInArray flat_in_array = Uninitialized);
2070
2071 static const TypeInstKlassPtr* make(PTR ptr, ciKlass* k, Offset offset, FlatInArray flat_in_array = Uninitialized) {
2072 const TypeInterfaces* interfaces = TypePtr::interfaces(k, true, false, false, ignore_interfaces);
2073 return make(ptr, k, interfaces, offset, flat_in_array);
2074 }
2075
2076 virtual const TypeInstKlassPtr* cast_to_ptr_type(PTR ptr) const;
2077
2078 virtual const TypeKlassPtr *cast_to_exactness(bool klass_is_exact) const;
2079
2080 // corresponding pointer to instance, for a given class
2081 virtual const TypeOopPtr* as_instance_type(bool klass_change = true) const;
2082 virtual uint hash() const;
2083 virtual bool eq(const Type *t) const;
2084
2085
2086 virtual bool empty() const;
2087 virtual const TypePtr *add_offset( intptr_t offset ) const;
2088 virtual const Type *xmeet( const Type *t ) const;
2089 virtual const Type *xdual() const;
2090 virtual const TypeInstKlassPtr* with_offset(intptr_t offset) const;
2091
2092 virtual const TypeKlassPtr* try_improve() const;
2093
2094 virtual FlatInArray flat_in_array() const { return _flat_in_array; }
2095
2096 FlatInArray dual_flat_in_array() const {
2097 return flat_in_array_dual[_flat_in_array];
2098 }
2099
2100 virtual bool can_be_inline_array() const;
2101
2102 // Convenience common pre-built types.
2103 static const TypeInstKlassPtr* OBJECT; // Not-null object klass or below
2104 static const TypeInstKlassPtr* OBJECT_OR_NULL; // Maybe-null version of same
2105
2106 #ifndef PRODUCT
2107 virtual void dump2(Dict& d, uint depth, outputStream* st) const;
2108 #endif // PRODUCT
2109
2110 private:
2111 virtual bool is_meet_subtype_of_helper(const TypeKlassPtr* other, bool this_xk, bool other_xk) const;
2112 };
2113
2114 // Array klass pointer, mirrors TypeAryPtr
2115 class TypeAryKlassPtr : public TypeKlassPtr {
2116 friend class TypeInstKlassPtr;
2117 friend class Type;
2118 friend class TypePtr;
2119
2120 const Type *_elem;
2121 const bool _not_flat; // Array is never flat
2122 const bool _not_null_free; // Array is never null-free
2123 const bool _flat;
2124 const bool _null_free;
2125 const bool _atomic;
2126 const bool _refined_type;
2127
2128 static const TypeInterfaces* _array_interfaces;
2129 TypeAryKlassPtr(PTR ptr, const Type *elem, ciKlass* klass, Offset offset, bool not_flat, int not_null_free, bool flat, bool null_free, bool atomic, bool refined_type)
2130 : TypeKlassPtr(AryKlassPtr, ptr, klass, _array_interfaces, offset), _elem(elem), _not_flat(not_flat), _not_null_free(not_null_free), _flat(flat), _null_free(null_free), _atomic(atomic), _refined_type(refined_type) {
2131 assert(klass == nullptr || klass->is_type_array_klass() || klass->is_flat_array_klass() || !klass->as_obj_array_klass()->base_element_klass()->is_interface(), "");
2132 }
2133
2134 virtual ciKlass* exact_klass_helper() const;
2135 // Only guaranteed non null for array of basic types
2136 virtual ciKlass* klass() const;
2137
2138 virtual bool must_be_exact() const;
2139
2140 bool dual_flat() const {
2141 return _flat;
2142 }
2143
2144 bool meet_flat(bool other) const {
2145 return _flat && other;
2146 }
2147
2148 bool dual_null_free() const {
2149 return _null_free;
2150 }
2151
2152 bool meet_null_free(bool other) const {
2153 return _null_free && other;
2154 }
2155
2156 bool dual_atomic() const {
2157 return _atomic;
2158 }
2159
2160 bool meet_atomic(bool other) const {
2161 return _atomic && other;
2162 }
2163
2164 public:
2165
2166 // returns base element type, an instance klass (and not interface) for object arrays
2167 const Type* base_element_type(int& dims) const;
2168
2169 static const TypeAryKlassPtr* make(PTR ptr, ciKlass* k, Offset offset, InterfaceHandling interface_handling, bool not_flat, bool not_null_free, bool flat, bool null_free, bool atomic, bool refined_type);
2170
2171 bool is_same_java_type_as_helper(const TypeKlassPtr* other) const;
2172 bool is_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const;
2173 bool maybe_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const;
2174
2175 bool is_loaded() const { return (_elem->isa_klassptr() ? _elem->is_klassptr()->is_loaded() : true); }
2176
2177 static const TypeAryKlassPtr* make(PTR ptr, const Type* elem, ciKlass* k, Offset offset, bool not_flat, bool not_null_free, bool flat, bool null_free, bool atomic, bool refined_type);
2178 static const TypeAryKlassPtr* make(ciKlass* klass, InterfaceHandling interface_handling);
2179
2180 const TypeAryKlassPtr* cast_to_non_refined() const;
2181 const TypeAryKlassPtr* cast_to_refined_array_klass_ptr(bool refined = true) const;
2182
2183 const Type *elem() const { return _elem; }
2184
2185 virtual bool eq(const Type *t) const;
2186 virtual uint hash() const; // Type specific hashing
2187
2188 virtual const TypeAryKlassPtr* cast_to_ptr_type(PTR ptr) const;
2189
2190 virtual const TypeKlassPtr *cast_to_exactness(bool klass_is_exact) const;
2191
2192 // corresponding pointer to instance, for a given class
2193 virtual const TypeOopPtr* as_instance_type(bool klass_change = true) const;
2194
2195 virtual const TypePtr *add_offset( intptr_t offset ) const;
2196 virtual const Type *xmeet( const Type *t ) const;
2197 virtual const Type *xdual() const; // Compute dual right now.
2198
2199 virtual const TypeAryKlassPtr* with_offset(intptr_t offset) const;
2200
2201 virtual bool empty(void) const {
2202 return TypeKlassPtr::empty() || _elem->empty();
2203 }
2204
2205 bool is_flat() const { return _flat; }
2206 bool is_not_flat() const { return _not_flat; }
2207 bool is_null_free() const { return _null_free; }
2208 bool is_not_null_free() const { return _not_null_free; }
2209 bool is_atomic() const { return _atomic; }
2210 bool is_refined_type() const { return _refined_type; }
2211 virtual bool can_be_inline_array() const;
2212
2213 #ifndef PRODUCT
2214 virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
2215 #endif
2216 private:
2217 virtual bool is_meet_subtype_of_helper(const TypeKlassPtr* other, bool this_xk, bool other_xk) const;
2218 };
2219
2220 class TypeNarrowPtr : public Type {
2221 protected:
2222 const TypePtr* _ptrtype; // Could be TypePtr::NULL_PTR
2223
2224 TypeNarrowPtr(TYPES t, const TypePtr* ptrtype): Type(t),
2225 _ptrtype(ptrtype) {
2226 assert(ptrtype->offset() == 0 ||
2227 ptrtype->offset() == OffsetBot ||
2228 ptrtype->offset() == OffsetTop, "no real offsets");
2229 }
2230
2231 virtual const TypeNarrowPtr *isa_same_narrowptr(const Type *t) const = 0;
2232 virtual const TypeNarrowPtr *is_same_narrowptr(const Type *t) const = 0;
2328 }
2329
2330 virtual const TypeNarrowPtr *make_hash_same_narrowptr(const TypePtr *t) const {
2331 return (const TypeNarrowPtr*)((new TypeNarrowKlass(t))->hashcons());
2332 }
2333
2334 public:
2335 static const TypeNarrowKlass *make( const TypePtr* type);
2336
2337 // static const TypeNarrowKlass *BOTTOM;
2338 static const TypeNarrowKlass *NULL_PTR;
2339
2340 #ifndef PRODUCT
2341 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
2342 #endif
2343 };
2344
2345 //------------------------------TypeFunc---------------------------------------
2346 // Class of Array Types
2347 class TypeFunc : public Type {
2348 TypeFunc(const TypeTuple *domain_sig, const TypeTuple* domain_cc, const TypeTuple* range_sig, const TypeTuple* range_cc, bool scalarized_return)
2349 : Type(Function), _domain_sig(domain_sig), _domain_cc(domain_cc), _range_sig(range_sig), _range_cc(range_cc), _scalarized_return(scalarized_return) {}
2350 virtual bool eq( const Type *t ) const;
2351 virtual uint hash() const; // Type specific hashing
2352 virtual bool singleton(void) const; // TRUE if type is a singleton
2353 virtual bool empty(void) const; // TRUE if type is vacuous
2354
2355 // Domains of inputs: inline type arguments are not passed by
2356 // reference, instead each field of the inline type is passed as an
2357 // argument. We maintain 2 views of the argument list here: one
2358 // based on the signature (with an inline type argument as a single
2359 // slot), one based on the actual calling convention (with a value
2360 // type argument as a list of its fields).
2361 const TypeTuple* const _domain_sig;
2362 const TypeTuple* const _domain_cc;
2363 // Range of results. Similar to domains: an inline type result can be
2364 // returned in registers in which case range_cc lists all fields and
2365 // is the actual calling convention.
2366 const TypeTuple* const _range_sig;
2367 const TypeTuple* const _range_cc;
2368 const bool _scalarized_return;
2369
2370 public:
2371 // Constants are shared among ADLC and VM
2372 enum { Control = AdlcVMDeps::Control,
2373 I_O = AdlcVMDeps::I_O,
2374 Memory = AdlcVMDeps::Memory,
2375 FramePtr = AdlcVMDeps::FramePtr,
2376 ReturnAdr = AdlcVMDeps::ReturnAdr,
2377 Parms = AdlcVMDeps::Parms
2378 };
2379
2380
2381 // Accessors:
2382 const TypeTuple* domain_sig() const { return _domain_sig; }
2383 const TypeTuple* domain_cc() const { return _domain_cc; }
2384 const TypeTuple* range_sig() const { return _range_sig; }
2385 const TypeTuple* range_cc() const { return _range_cc; }
2386 bool scalarized_return() const { return _scalarized_return; }
2387
2388 static const TypeFunc* make(ciMethod* method, bool is_call = true, bool is_osr_compilation = false);
2389 static const TypeFunc *make(const TypeTuple* domain_sig, const TypeTuple* domain_cc,
2390 const TypeTuple* range_sig, const TypeTuple* range_cc,
2391 bool scalarized_return = false);
2392 static const TypeFunc *make(const TypeTuple* domain, const TypeTuple* range);
2393
2394 virtual const Type *xmeet( const Type *t ) const;
2395 virtual const Type *xdual() const; // Compute dual right now.
2396
2397 BasicType return_type() const;
2398
2399 bool returns_inline_type_as_fields() const {
2400 // First condition is not sufficient because returned value class can be empty
2401 assert(_range_sig == _range_cc || _scalarized_return, "Only possible with scalarized return");
2402 return _scalarized_return;
2403 }
2404
2405 #ifndef PRODUCT
2406 virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
2407 #endif
2408 // Convenience common pre-built types.
2409 };
2410
2411 //------------------------------accessors--------------------------------------
2412 inline bool Type::is_ptr_to_narrowoop() const {
2413 #ifdef _LP64
2414 return (isa_oopptr() != nullptr && is_oopptr()->is_ptr_to_narrowoop_nv());
2415 #else
2416 return false;
2417 #endif
2418 }
2419
2420 inline bool Type::is_ptr_to_narrowklass() const {
2421 #ifdef _LP64
2422 return (isa_oopptr() != nullptr && is_oopptr()->is_ptr_to_narrowklass_nv());
2423 #else
2424 return false;
2661 }
2662
2663 inline const TypeNarrowOop* Type::make_narrowoop() const {
2664 return (_base == NarrowOop) ? is_narrowoop() :
2665 (isa_ptr() ? TypeNarrowOop::make(is_ptr()) : nullptr);
2666 }
2667
2668 inline const TypeNarrowKlass* Type::make_narrowklass() const {
2669 return (_base == NarrowKlass) ? is_narrowklass() :
2670 (isa_ptr() ? TypeNarrowKlass::make(is_ptr()) : nullptr);
2671 }
2672
2673 inline bool Type::is_floatingpoint() const {
2674 if( (_base == HalfFloatCon) || (_base == HalfFloatBot) ||
2675 (_base == FloatCon) || (_base == FloatBot) ||
2676 (_base == DoubleCon) || (_base == DoubleBot) )
2677 return true;
2678 return false;
2679 }
2680
2681 inline bool Type::is_inlinetypeptr() const {
2682 return isa_instptr() != nullptr && is_instptr()->instance_klass()->is_inlinetype();
2683 }
2684
2685 inline ciInlineKlass* Type::inline_klass() const {
2686 return make_ptr()->is_instptr()->instance_klass()->as_inline_klass();
2687 }
2688
2689 template <>
2690 inline const TypeInt* Type::cast<TypeInt>() const {
2691 return is_int();
2692 }
2693
2694 template <>
2695 inline const TypeLong* Type::cast<TypeLong>() const {
2696 return is_long();
2697 }
2698
2699 template <>
2700 inline const TypeInt* Type::try_cast<TypeInt>() const {
2701 return isa_int();
2702 }
2703
2704 template <>
2705 inline const TypeLong* Type::try_cast<TypeLong>() const {
2706 return isa_long();
2707 }
2708
2714
2715 // For type queries and asserts
2716 #define is_intptr_t is_long
2717 #define isa_intptr_t isa_long
2718 #define find_intptr_t_type find_long_type
2719 #define find_intptr_t_con find_long_con
2720 #define TypeX TypeLong
2721 #define Type_X Type::Long
2722 #define TypeX_X TypeLong::LONG
2723 #define TypeX_ZERO TypeLong::ZERO
2724 // For 'ideal_reg' machine registers
2725 #define Op_RegX Op_RegL
2726 // For phase->intcon variants
2727 #define MakeConX longcon
2728 #define ConXNode ConLNode
2729 // For array index arithmetic
2730 #define MulXNode MulLNode
2731 #define AndXNode AndLNode
2732 #define OrXNode OrLNode
2733 #define CmpXNode CmpLNode
2734 #define CmpUXNode CmpULNode
2735 #define SubXNode SubLNode
2736 #define LShiftXNode LShiftLNode
2737 // For object size computation:
2738 #define AddXNode AddLNode
2739 #define RShiftXNode RShiftLNode
2740 // For card marks and hashcodes
2741 #define URShiftXNode URShiftLNode
2742 // For shenandoahSupport
2743 #define LoadXNode LoadLNode
2744 #define StoreXNode StoreLNode
2745 // Opcodes
2746 #define Op_LShiftX Op_LShiftL
2747 #define Op_AndX Op_AndL
2748 #define Op_AddX Op_AddL
2749 #define Op_SubX Op_SubL
2750 #define Op_XorX Op_XorL
2751 #define Op_URShiftX Op_URShiftL
2752 #define Op_LoadX Op_LoadL
2753 #define Op_StoreX Op_StoreL
2754 // conversions
2755 #define ConvI2X(x) ConvI2L(x)
2756 #define ConvL2X(x) (x)
2757 #define ConvX2I(x) ConvL2I(x)
2758 #define ConvX2L(x) (x)
2759 #define ConvX2UL(x) (x)
2760
2761 #else
2762
2763 // For type queries and asserts
2764 #define is_intptr_t is_int
2765 #define isa_intptr_t isa_int
2766 #define find_intptr_t_type find_int_type
2767 #define find_intptr_t_con find_int_con
2768 #define TypeX TypeInt
2769 #define Type_X Type::Int
2770 #define TypeX_X TypeInt::INT
2771 #define TypeX_ZERO TypeInt::ZERO
2772 // For 'ideal_reg' machine registers
2773 #define Op_RegX Op_RegI
2774 // For phase->intcon variants
2775 #define MakeConX intcon
2776 #define ConXNode ConINode
2777 // For array index arithmetic
2778 #define MulXNode MulINode
2779 #define AndXNode AndINode
2780 #define OrXNode OrINode
2781 #define CmpXNode CmpINode
2782 #define CmpUXNode CmpUNode
2783 #define SubXNode SubINode
2784 #define LShiftXNode LShiftINode
2785 // For object size computation:
2786 #define AddXNode AddINode
2787 #define RShiftXNode RShiftINode
2788 // For card marks and hashcodes
2789 #define URShiftXNode URShiftINode
2790 // For shenandoahSupport
2791 #define LoadXNode LoadINode
2792 #define StoreXNode StoreINode
2793 // Opcodes
2794 #define Op_LShiftX Op_LShiftI
2795 #define Op_AndX Op_AndI
2796 #define Op_AddX Op_AddI
2797 #define Op_SubX Op_SubI
2798 #define Op_XorX Op_XorI
2799 #define Op_URShiftX Op_URShiftI
2800 #define Op_LoadX Op_LoadI
2801 #define Op_StoreX Op_StoreI
2802 // conversions
2803 #define ConvI2X(x) (x)
2804 #define ConvL2X(x) ConvL2I(x)
2805 #define ConvX2I(x) (x)
2806 #define ConvX2L(x) ConvI2L(x)
2807 #define ConvX2UL(x) ConvI2UL(x)
2808
2809 #endif
2810
2811 #endif // SHARE_OPTO_TYPE_HPP
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