1 /*
2 * Copyright (c) 1997, 2025, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
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.
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23 */
24
25 #ifndef SHARE_OPTO_TYPE_HPP
26 #define SHARE_OPTO_TYPE_HPP
27
28 #include "opto/adlcVMDeps.hpp"
29 #include "runtime/handles.hpp"
30
31 // Portions of code courtesy of Clifford Click
32
33 // Optimization - Graph Style
34
35
36 // This class defines a Type lattice. The lattice is used in the constant
37 // propagation algorithms, and for some type-checking of the iloc code.
38 // Basic types include RSD's (lower bound, upper bound, stride for integers),
39 // float & double precision constants, sets of data-labels and code-labels.
40 // The complete lattice is described below. Subtypes have no relationship to
41 // up or down in the lattice; that is entirely determined by the behavior of
42 // the MEET/JOIN functions.
43
44 class Dict;
45 class Type;
46 class TypeD;
47 class TypeF;
48 class TypeH;
49 class TypeInteger;
50 class TypeInt;
51 class TypeLong;
52 class TypeNarrowPtr;
53 class TypeNarrowOop;
54 class TypeNarrowKlass;
55 class TypeAry;
56 class TypeTuple;
57 class TypeVect;
58 class TypeVectA;
59 class TypeVectS;
60 class TypeVectD;
61 class TypeVectX;
62 class TypeVectY;
63 class TypeVectZ;
64 class TypeVectMask;
65 class TypePtr;
66 class TypeRawPtr;
67 class TypeOopPtr;
68 class TypeInstPtr;
69 class TypeAryPtr;
70 class TypeKlassPtr;
71 class TypeInstKlassPtr;
72 class TypeAryKlassPtr;
73 class TypeMetadataPtr;
74 class VerifyMeet;
75
76 //------------------------------Type-------------------------------------------
77 // Basic Type object, represents a set of primitive Values.
78 // Types are hash-cons'd into a private class dictionary, so only one of each
79 // different kind of Type exists. Types are never modified after creation, so
80 // all their interesting fields are constant.
81 class Type {
82
83 public:
84 enum TYPES {
85 Bad=0, // Type check
86 Control, // Control of code (not in lattice)
87 Top, // Top of the lattice
88 Int, // Integer range (lo-hi)
89 Long, // Long integer range (lo-hi)
90 Half, // Placeholder half of doubleword
91 NarrowOop, // Compressed oop pointer
92 NarrowKlass, // Compressed klass pointer
93
94 Tuple, // Method signature or object layout
95 Array, // Array types
96
97 Interfaces, // Set of implemented interfaces for oop types
98
99 VectorMask, // Vector predicate/mask type
100 VectorA, // (Scalable) Vector types for vector length agnostic
101 VectorS, // 32bit Vector types
102 VectorD, // 64bit Vector types
103 VectorX, // 128bit Vector types
104 VectorY, // 256bit Vector types
105 VectorZ, // 512bit Vector types
106
107 AnyPtr, // Any old raw, klass, inst, or array pointer
108 RawPtr, // Raw (non-oop) pointers
109 OopPtr, // Any and all Java heap entities
110 InstPtr, // Instance pointers (non-array objects)
111 AryPtr, // Array pointers
112 // (Ptr order matters: See is_ptr, isa_ptr, is_oopptr, isa_oopptr.)
113
114 MetadataPtr, // Generic metadata
115 KlassPtr, // Klass pointers
116 InstKlassPtr,
117 AryKlassPtr,
118
119 Function, // Function signature
120 Abio, // Abstract I/O
121 Return_Address, // Subroutine return address
122 Memory, // Abstract store
123 HalfFloatTop, // No float value
124 HalfFloatCon, // Floating point constant
125 HalfFloatBot, // Any float value
126 FloatTop, // No float value
127 FloatCon, // Floating point constant
128 FloatBot, // Any float value
129 DoubleTop, // No double value
130 DoubleCon, // Double precision constant
131 DoubleBot, // Any double value
132 Bottom, // Bottom of lattice
133 lastype // Bogus ending type (not in lattice)
134 };
135
136 // Signal values for offsets from a base pointer
137 enum OFFSET_SIGNALS {
138 OffsetTop = -2000000000, // undefined offset
139 OffsetBot = -2000000001 // any possible offset
140 };
141
142 // Min and max WIDEN values.
143 enum WIDEN {
144 WidenMin = 0,
145 WidenMax = 3
146 };
147
148 private:
149 typedef struct {
150 TYPES dual_type;
151 BasicType basic_type;
152 const char* msg;
153 bool isa_oop;
154 uint ideal_reg;
155 relocInfo::relocType reloc;
156 } TypeInfo;
157
158 // Dictionary of types shared among compilations.
159 static Dict* _shared_type_dict;
160 static const TypeInfo _type_info[];
161
162 static int uhash( const Type *const t );
163 // Structural equality check. Assumes that equals() has already compared
164 // the _base types and thus knows it can cast 't' appropriately.
165 virtual bool eq( const Type *t ) const;
166
167 // Top-level hash-table of types
168 static Dict *type_dict() {
169 return Compile::current()->type_dict();
170 }
171
172 // DUAL operation: reflect around lattice centerline. Used instead of
173 // join to ensure my lattice is symmetric up and down. Dual is computed
174 // lazily, on demand, and cached in _dual.
175 const Type *_dual; // Cached dual value
176
177
178 const Type *meet_helper(const Type *t, bool include_speculative) const;
179 void check_symmetrical(const Type* t, const Type* mt, const VerifyMeet& verify) const NOT_DEBUG_RETURN;
180
181 protected:
182 // Each class of type is also identified by its base.
183 const TYPES _base; // Enum of Types type
184
185 Type( TYPES t ) : _dual(nullptr), _base(t) {} // Simple types
186 // ~Type(); // Use fast deallocation
187 const Type *hashcons(); // Hash-cons the type
188 virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
189 const Type *join_helper(const Type *t, bool include_speculative) const {
190 assert_type_verify_empty();
191 return dual()->meet_helper(t->dual(), include_speculative)->dual();
192 }
193
194 void assert_type_verify_empty() const NOT_DEBUG_RETURN;
195
196 public:
197
198 inline void* operator new( size_t x ) throw() {
199 Compile* compile = Compile::current();
200 compile->set_type_last_size(x);
201 return compile->type_arena()->AmallocWords(x);
202 }
203 inline void operator delete( void* ptr ) {
204 Compile* compile = Compile::current();
205 compile->type_arena()->Afree(ptr,compile->type_last_size());
206 }
207
208 // Initialize the type system for a particular compilation.
209 static void Initialize(Compile* compile);
210
211 // Initialize the types shared by all compilations.
212 static void Initialize_shared(Compile* compile);
213
214 TYPES base() const {
215 assert(_base > Bad && _base < lastype, "sanity");
216 return _base;
217 }
218
219 // Create a new hash-consd type
220 static const Type *make(enum TYPES);
221 // Test for equivalence of types
222 static bool equals(const Type* t1, const Type* t2);
223 // Test for higher or equal in lattice
224 // Variant that drops the speculative part of the types
225 bool higher_equal(const Type* t) const {
226 return equals(meet(t), t->remove_speculative());
227 }
228 // Variant that keeps the speculative part of the types
229 bool higher_equal_speculative(const Type* t) const {
230 return equals(meet_speculative(t), t);
231 }
232
233 // MEET operation; lower in lattice.
234 // Variant that drops the speculative part of the types
235 const Type *meet(const Type *t) const {
236 return meet_helper(t, false);
237 }
238 // Variant that keeps the speculative part of the types
239 const Type *meet_speculative(const Type *t) const {
240 return meet_helper(t, true)->cleanup_speculative();
241 }
242 // WIDEN: 'widens' for Ints and other range types
243 virtual const Type *widen( const Type *old, const Type* limit ) const { return this; }
244 // NARROW: complement for widen, used by pessimistic phases
245 virtual const Type *narrow( const Type *old ) const { return this; }
246
247 // DUAL operation: reflect around lattice centerline. Used instead of
248 // join to ensure my lattice is symmetric up and down.
249 const Type *dual() const { return _dual; }
250
251 // Compute meet dependent on base type
252 virtual const Type *xmeet( const Type *t ) const;
253 virtual const Type *xdual() const; // Compute dual right now.
254
255 // JOIN operation; higher in lattice. Done by finding the dual of the
256 // meet of the dual of the 2 inputs.
257 // Variant that drops the speculative part of the types
258 const Type *join(const Type *t) const {
259 return join_helper(t, false);
260 }
261 // Variant that keeps the speculative part of the types
262 const Type *join_speculative(const Type *t) const {
263 return join_helper(t, true)->cleanup_speculative();
264 }
265
266 // Modified version of JOIN adapted to the needs Node::Value.
267 // Normalizes all empty values to TOP. Does not kill _widen bits.
268 // Variant that drops the speculative part of the types
269 const Type *filter(const Type *kills) const {
270 return filter_helper(kills, false);
271 }
272 // Variant that keeps the speculative part of the types
273 const Type *filter_speculative(const Type *kills) const {
274 return filter_helper(kills, true)->cleanup_speculative();
275 }
276
277 // Returns true if this pointer points at memory which contains a
278 // compressed oop references.
279 bool is_ptr_to_narrowoop() const;
280 bool is_ptr_to_narrowklass() const;
281
282 // Convenience access
283 short geth() const;
284 virtual float getf() const;
285 double getd() const;
286
287 const TypeInt *is_int() const;
288 const TypeInt *isa_int() const; // Returns null if not an Int
289 const TypeInteger* is_integer(BasicType bt) const;
290 const TypeInteger* isa_integer(BasicType bt) const;
291 const TypeLong *is_long() const;
292 const TypeLong *isa_long() const; // Returns null if not a Long
293 const TypeD *isa_double() const; // Returns null if not a Double{Top,Con,Bot}
294 const TypeD *is_double_constant() const; // Asserts it is a DoubleCon
295 const TypeD *isa_double_constant() const; // Returns null if not a DoubleCon
296 const TypeH *isa_half_float() const; // Returns null if not a Float{Top,Con,Bot}
297 const TypeH *is_half_float_constant() const; // Asserts it is a FloatCon
298 const TypeH *isa_half_float_constant() const; // Returns null if not a FloatCon
299 const TypeF *isa_float() const; // Returns null if not a Float{Top,Con,Bot}
300 const TypeF *is_float_constant() const; // Asserts it is a FloatCon
301 const TypeF *isa_float_constant() const; // Returns null if not a FloatCon
302 const TypeTuple *is_tuple() const; // Collection of fields, NOT a pointer
303 const TypeAry *is_ary() const; // Array, NOT array pointer
304 const TypeAry *isa_ary() const; // Returns null of not ary
305 const TypeVect *is_vect() const; // Vector
306 const TypeVect *isa_vect() const; // Returns null if not a Vector
307 const TypeVectMask *is_vectmask() const; // Predicate/Mask Vector
308 const TypeVectMask *isa_vectmask() const; // Returns null if not a Vector Predicate/Mask
309 const TypePtr *is_ptr() const; // Asserts it is a ptr type
310 const TypePtr *isa_ptr() const; // Returns null if not ptr type
311 const TypeRawPtr *isa_rawptr() const; // NOT Java oop
312 const TypeRawPtr *is_rawptr() const; // Asserts is rawptr
313 const TypeNarrowOop *is_narrowoop() const; // Java-style GC'd pointer
314 const TypeNarrowOop *isa_narrowoop() const; // Returns null if not oop ptr type
315 const TypeNarrowKlass *is_narrowklass() const; // compressed klass pointer
316 const TypeNarrowKlass *isa_narrowklass() const;// Returns null if not oop ptr type
317 const TypeOopPtr *isa_oopptr() const; // Returns null if not oop ptr type
318 const TypeOopPtr *is_oopptr() const; // Java-style GC'd pointer
319 const TypeInstPtr *isa_instptr() const; // Returns null if not InstPtr
320 const TypeInstPtr *is_instptr() const; // Instance
321 const TypeAryPtr *isa_aryptr() const; // Returns null if not AryPtr
322 const TypeAryPtr *is_aryptr() const; // Array oop
323
324 template <typename TypeClass>
325 const TypeClass* cast() const;
326
327 const TypeMetadataPtr *isa_metadataptr() const; // Returns null if not oop ptr type
328 const TypeMetadataPtr *is_metadataptr() const; // Java-style GC'd pointer
329 const TypeKlassPtr *isa_klassptr() const; // Returns null if not KlassPtr
330 const TypeKlassPtr *is_klassptr() const; // assert if not KlassPtr
331 const TypeInstKlassPtr *isa_instklassptr() const; // Returns null if not IntKlassPtr
332 const TypeInstKlassPtr *is_instklassptr() const; // assert if not IntKlassPtr
333 const TypeAryKlassPtr *isa_aryklassptr() const; // Returns null if not AryKlassPtr
334 const TypeAryKlassPtr *is_aryklassptr() const; // assert if not AryKlassPtr
335
336 virtual bool is_finite() const; // Has a finite value
337 virtual bool is_nan() const; // Is not a number (NaN)
338
339 // Returns this ptr type or the equivalent ptr type for this compressed pointer.
340 const TypePtr* make_ptr() const;
341
342 // Returns this oopptr type or the equivalent oopptr type for this compressed pointer.
343 // Asserts if the underlying type is not an oopptr or narrowoop.
344 const TypeOopPtr* make_oopptr() const;
345
346 // Returns this compressed pointer or the equivalent compressed version
347 // of this pointer type.
348 const TypeNarrowOop* make_narrowoop() const;
349
350 // Returns this compressed klass pointer or the equivalent
351 // compressed version of this pointer type.
352 const TypeNarrowKlass* make_narrowklass() const;
353
354 // Special test for register pressure heuristic
355 bool is_floatingpoint() const; // True if Float or Double base type
356
357 // Do you have memory, directly or through a tuple?
358 bool has_memory( ) const;
359
360 // TRUE if type is a singleton
361 virtual bool singleton(void) const;
362
363 // TRUE if type is above the lattice centerline, and is therefore vacuous
364 virtual bool empty(void) const;
365
366 // Return a hash for this type. The hash function is public so ConNode
367 // (constants) can hash on their constant, which is represented by a Type.
368 virtual uint hash() const;
369
370 // Map ideal registers (machine types) to ideal types
371 static const Type *mreg2type[];
372
373 // Printing, statistics
374 #ifndef PRODUCT
375 void dump_on(outputStream *st) const;
376 void dump() const {
377 dump_on(tty);
378 }
379 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
380 static void dump_stats();
381 // Groups of types, for debugging and visualization only.
382 enum class Category {
383 Data,
384 Memory,
385 Mixed, // Tuples with types of different categories.
386 Control,
387 Other, // {Type::Top, Type::Abio, Type::Bottom}.
388 Undef // {Type::Bad, Type::lastype}, for completeness.
389 };
390 // Return the category of this type.
391 Category category() const;
392 // Check recursively in tuples.
393 bool has_category(Category cat) const;
394
395 static const char* str(const Type* t);
396 #endif // !PRODUCT
397 void typerr(const Type *t) const; // Mixing types error
398
399 // Create basic type
400 static const Type* get_const_basic_type(BasicType type) {
401 assert((uint)type <= T_CONFLICT && _const_basic_type[type] != nullptr, "bad type");
402 return _const_basic_type[type];
403 }
404
405 // For two instance arrays of same dimension, return the base element types.
406 // Otherwise or if the arrays have different dimensions, return null.
407 static void get_arrays_base_elements(const Type *a1, const Type *a2,
408 const TypeInstPtr **e1, const TypeInstPtr **e2);
409
410 // Mapping to the array element's basic type.
411 BasicType array_element_basic_type() const;
412
413 enum InterfaceHandling {
414 trust_interfaces,
415 ignore_interfaces
416 };
417 // Create standard type for a ciType:
418 static const Type* get_const_type(ciType* type, InterfaceHandling interface_handling = ignore_interfaces);
419
420 // Create standard zero value:
421 static const Type* get_zero_type(BasicType type) {
422 assert((uint)type <= T_CONFLICT && _zero_type[type] != nullptr, "bad type");
423 return _zero_type[type];
424 }
425
426 // Report if this is a zero value (not top).
427 bool is_zero_type() const {
428 BasicType type = basic_type();
429 if (type == T_VOID || type >= T_CONFLICT)
430 return false;
431 else
432 return (this == _zero_type[type]);
433 }
434
435 // Convenience common pre-built types.
436 static const Type *ABIO;
437 static const Type *BOTTOM;
438 static const Type *CONTROL;
439 static const Type *DOUBLE;
440 static const Type *FLOAT;
441 static const Type *HALF_FLOAT;
442 static const Type *HALF;
443 static const Type *MEMORY;
444 static const Type *MULTI;
445 static const Type *RETURN_ADDRESS;
446 static const Type *TOP;
447
448 // Mapping from compiler type to VM BasicType
449 BasicType basic_type() const { return _type_info[_base].basic_type; }
450 uint ideal_reg() const { return _type_info[_base].ideal_reg; }
451 const char* msg() const { return _type_info[_base].msg; }
452 bool isa_oop_ptr() const { return _type_info[_base].isa_oop; }
453 relocInfo::relocType reloc() const { return _type_info[_base].reloc; }
454
455 // Mapping from CI type system to compiler type:
456 static const Type* get_typeflow_type(ciType* type);
457
458 static const Type* make_from_constant(ciConstant constant,
459 bool require_constant = false,
460 int stable_dimension = 0,
461 bool is_narrow = false,
462 bool is_autobox_cache = false);
463
464 static const Type* make_constant_from_field(ciInstance* holder,
465 int off,
466 bool is_unsigned_load,
467 BasicType loadbt);
468
469 static const Type* make_constant_from_field(ciField* field,
470 ciInstance* holder,
471 BasicType loadbt,
472 bool is_unsigned_load);
473
474 static const Type* make_constant_from_array_element(ciArray* array,
475 int off,
476 int stable_dimension,
477 BasicType loadbt,
478 bool is_unsigned_load);
479
480 // Speculative type helper methods. See TypePtr.
481 virtual const TypePtr* speculative() const { return nullptr; }
482 virtual ciKlass* speculative_type() const { return nullptr; }
483 virtual ciKlass* speculative_type_not_null() const { return nullptr; }
484 virtual bool speculative_maybe_null() const { return true; }
485 virtual bool speculative_always_null() const { return true; }
486 virtual const Type* remove_speculative() const { return this; }
487 virtual const Type* cleanup_speculative() const { return this; }
488 virtual bool would_improve_type(ciKlass* exact_kls, int inline_depth) const { return exact_kls != nullptr; }
489 virtual bool would_improve_ptr(ProfilePtrKind ptr_kind) const { return ptr_kind == ProfileAlwaysNull || ptr_kind == ProfileNeverNull; }
490 const Type* maybe_remove_speculative(bool include_speculative) const;
491
492 virtual bool maybe_null() const { return true; }
493 virtual bool is_known_instance() const { return false; }
494
495 private:
496 // support arrays
497 static const Type* _zero_type[T_CONFLICT+1];
498 static const Type* _const_basic_type[T_CONFLICT+1];
499 };
500
501 //------------------------------TypeF------------------------------------------
502 // Class of Float-Constant Types.
503 class TypeF : public Type {
504 TypeF( float f ) : Type(FloatCon), _f(f) {};
505 public:
506 virtual bool eq( const Type *t ) const;
507 virtual uint hash() const; // Type specific hashing
508 virtual bool singleton(void) const; // TRUE if type is a singleton
509 virtual bool empty(void) const; // TRUE if type is vacuous
510 public:
511 const float _f; // Float constant
512
513 static const TypeF *make(float f);
514
515 virtual bool is_finite() const; // Has a finite value
516 virtual bool is_nan() const; // Is not a number (NaN)
517
518 virtual const Type *xmeet( const Type *t ) const;
519 virtual const Type *xdual() const; // Compute dual right now.
520 // Convenience common pre-built types.
521 static const TypeF *MAX;
522 static const TypeF *MIN;
523 static const TypeF *ZERO; // positive zero only
524 static const TypeF *ONE;
525 static const TypeF *POS_INF;
526 static const TypeF *NEG_INF;
527 #ifndef PRODUCT
528 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
529 #endif
530 };
531
532 // Class of Half Float-Constant Types.
533 class TypeH : public Type {
534 TypeH(short f) : Type(HalfFloatCon), _f(f) {};
535 public:
536 virtual bool eq(const Type* t) const;
537 virtual uint hash() const; // Type specific hashing
538 virtual bool singleton(void) const; // TRUE if type is a singleton
539 virtual bool empty(void) const; // TRUE if type is vacuous
540 public:
541 const short _f; // Half Float constant
542
543 static const TypeH* make(float f);
544 static const TypeH* make(short f);
545
546 virtual bool is_finite() const; // Has a finite value
547 virtual bool is_nan() const; // Is not a number (NaN)
548
549 virtual float getf() const;
550 virtual const Type* xmeet(const Type* t) const;
551 virtual const Type* xdual() const; // Compute dual right now.
552 // Convenience common pre-built types.
553 static const TypeH* MAX;
554 static const TypeH* MIN;
555 static const TypeH* ZERO; // positive zero only
556 static const TypeH* ONE;
557 static const TypeH* POS_INF;
558 static const TypeH* NEG_INF;
559 #ifndef PRODUCT
560 virtual void dump2(Dict &d, uint depth, outputStream* st) const;
561 #endif
562 };
563
564 //------------------------------TypeD------------------------------------------
565 // Class of Double-Constant Types.
566 class TypeD : public Type {
567 TypeD( double d ) : Type(DoubleCon), _d(d) {};
568 public:
569 virtual bool eq( const Type *t ) const;
570 virtual uint hash() const; // Type specific hashing
571 virtual bool singleton(void) const; // TRUE if type is a singleton
572 virtual bool empty(void) const; // TRUE if type is vacuous
573 public:
574 const double _d; // Double constant
575
576 static const TypeD *make(double d);
577
578 virtual bool is_finite() const; // Has a finite value
579 virtual bool is_nan() const; // Is not a number (NaN)
580
581 virtual const Type *xmeet( const Type *t ) const;
582 virtual const Type *xdual() const; // Compute dual right now.
583 // Convenience common pre-built types.
584 static const TypeD *MAX;
585 static const TypeD *MIN;
586 static const TypeD *ZERO; // positive zero only
587 static const TypeD *ONE;
588 static const TypeD *POS_INF;
589 static const TypeD *NEG_INF;
590 #ifndef PRODUCT
591 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
592 #endif
593 };
594
595 class TypeInteger : public Type {
596 protected:
597 TypeInteger(TYPES t, int w) : Type(t), _widen(w) {}
598
599 public:
600 const short _widen; // Limit on times we widen this sucker
601
602 virtual jlong hi_as_long() const = 0;
603 virtual jlong lo_as_long() const = 0;
604 jlong get_con_as_long(BasicType bt) const;
605 bool is_con() const { return lo_as_long() == hi_as_long(); }
606 virtual short widen_limit() const { return _widen; }
607
608 static const TypeInteger* make(jlong lo, jlong hi, int w, BasicType bt);
609 static const TypeInteger* make(jlong con, BasicType bt);
610
611 static const TypeInteger* bottom(BasicType type);
612 static const TypeInteger* zero(BasicType type);
613 static const TypeInteger* one(BasicType type);
614 static const TypeInteger* minus_1(BasicType type);
615 };
616
617
618
619 //------------------------------TypeInt----------------------------------------
620 // Class of integer ranges, the set of integers between a lower bound and an
621 // upper bound, inclusive.
622 class TypeInt : public TypeInteger {
623 TypeInt( jint lo, jint hi, int w );
624 protected:
625 virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
626
627 public:
628 typedef jint NativeType;
629 virtual bool eq( const Type *t ) const;
630 virtual uint hash() const; // Type specific hashing
631 virtual bool singleton(void) const; // TRUE if type is a singleton
632 virtual bool empty(void) const; // TRUE if type is vacuous
633 const jint _lo, _hi; // Lower bound, upper bound
634
635 static const TypeInt *make(jint lo);
636 // must always specify w
637 static const TypeInt *make(jint lo, jint hi, int w);
638
639 // Check for single integer
640 bool is_con() const { return _lo==_hi; }
641 bool is_con(jint i) const { return is_con() && _lo == i; }
642 jint get_con() const { assert(is_con(), "" ); return _lo; }
643
644 virtual bool is_finite() const; // Has a finite value
645
646 virtual const Type *xmeet( const Type *t ) const;
647 virtual const Type *xdual() const; // Compute dual right now.
648 virtual const Type *widen( const Type *t, const Type* limit_type ) const;
649 virtual const Type *narrow( const Type *t ) const;
650
651 virtual jlong hi_as_long() const { return _hi; }
652 virtual jlong lo_as_long() const { return _lo; }
653
654 // Do not kill _widen bits.
655 // Convenience common pre-built types.
656 static const TypeInt *MAX;
657 static const TypeInt *MIN;
658 static const TypeInt *MINUS_1;
659 static const TypeInt *ZERO;
660 static const TypeInt *ONE;
661 static const TypeInt *BOOL;
662 static const TypeInt *CC;
663 static const TypeInt *CC_LT; // [-1] == MINUS_1
664 static const TypeInt *CC_GT; // [1] == ONE
665 static const TypeInt *CC_EQ; // [0] == ZERO
666 static const TypeInt *CC_LE; // [-1,0]
667 static const TypeInt *CC_GE; // [0,1] == BOOL (!)
668 static const TypeInt *BYTE;
669 static const TypeInt *UBYTE;
670 static const TypeInt *CHAR;
671 static const TypeInt *SHORT;
672 static const TypeInt *POS;
673 static const TypeInt *POS1;
674 static const TypeInt *INT;
675 static const TypeInt *SYMINT; // symmetric range [-max_jint..max_jint]
676 static const TypeInt *TYPE_DOMAIN; // alias for TypeInt::INT
677
678 static const TypeInt *as_self(const Type *t) { return t->is_int(); }
679 #ifndef PRODUCT
680 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
681 #endif
682 };
683
684
685 //------------------------------TypeLong---------------------------------------
686 // Class of long integer ranges, the set of integers between a lower bound and
687 // an upper bound, inclusive.
688 class TypeLong : public TypeInteger {
689 TypeLong( jlong lo, jlong hi, int w );
690 protected:
691 // Do not kill _widen bits.
692 virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
693 public:
694 typedef jlong NativeType;
695 virtual bool eq( const Type *t ) const;
696 virtual uint hash() const; // Type specific hashing
697 virtual bool singleton(void) const; // TRUE if type is a singleton
698 virtual bool empty(void) const; // TRUE if type is vacuous
699 public:
700 const jlong _lo, _hi; // Lower bound, upper bound
701
702 static const TypeLong *make(jlong lo);
703 // must always specify w
704 static const TypeLong *make(jlong lo, jlong hi, int w);
705
706 // Check for single integer
707 bool is_con() const { return _lo==_hi; }
708 bool is_con(jlong i) const { return is_con() && _lo == i; }
709 jlong get_con() const { assert(is_con(), "" ); return _lo; }
710
711 // Check for positive 32-bit value.
712 int is_positive_int() const { return _lo >= 0 && _hi <= (jlong)max_jint; }
713
714 virtual bool is_finite() const; // Has a finite value
715
716 virtual jlong hi_as_long() const { return _hi; }
717 virtual jlong lo_as_long() const { return _lo; }
718
719 virtual const Type *xmeet( const Type *t ) const;
720 virtual const Type *xdual() const; // Compute dual right now.
721 virtual const Type *widen( const Type *t, const Type* limit_type ) const;
722 virtual const Type *narrow( const Type *t ) const;
723 // Convenience common pre-built types.
724 static const TypeLong *MAX;
725 static const TypeLong *MIN;
726 static const TypeLong *MINUS_1;
727 static const TypeLong *ZERO;
728 static const TypeLong *ONE;
729 static const TypeLong *POS;
730 static const TypeLong *LONG;
731 static const TypeLong *INT; // 32-bit subrange [min_jint..max_jint]
732 static const TypeLong *UINT; // 32-bit unsigned [0..max_juint]
733 static const TypeLong *TYPE_DOMAIN; // alias for TypeLong::LONG
734
735 // static convenience methods.
736 static const TypeLong *as_self(const Type *t) { return t->is_long(); }
737
738 #ifndef PRODUCT
739 virtual void dump2( Dict &d, uint, outputStream *st ) const;// Specialized per-Type dumping
740 #endif
741 };
742
743 //------------------------------TypeTuple--------------------------------------
744 // Class of Tuple Types, essentially type collections for function signatures
745 // and class layouts. It happens to also be a fast cache for the HotSpot
746 // signature types.
747 class TypeTuple : public Type {
748 TypeTuple( uint cnt, const Type **fields ) : Type(Tuple), _cnt(cnt), _fields(fields) { }
749
750 const uint _cnt; // Count of fields
751 const Type ** const _fields; // Array of field types
752
753 public:
754 virtual bool eq( const Type *t ) const;
755 virtual uint hash() const; // Type specific hashing
756 virtual bool singleton(void) const; // TRUE if type is a singleton
757 virtual bool empty(void) const; // TRUE if type is vacuous
758
759 // Accessors:
760 uint cnt() const { return _cnt; }
761 const Type* field_at(uint i) const {
762 assert(i < _cnt, "oob");
763 return _fields[i];
764 }
765 void set_field_at(uint i, const Type* t) {
766 assert(i < _cnt, "oob");
767 _fields[i] = t;
768 }
769
770 static const TypeTuple *make( uint cnt, const Type **fields );
771 static const TypeTuple *make_range(ciSignature *sig, InterfaceHandling interface_handling = ignore_interfaces);
772 static const TypeTuple *make_domain(ciInstanceKlass* recv, ciSignature *sig, InterfaceHandling interface_handling);
773
774 // Subroutine call type with space allocated for argument types
775 // Memory for Control, I_O, Memory, FramePtr, and ReturnAdr is allocated implicitly
776 static const Type **fields( uint arg_cnt );
777
778 virtual const Type *xmeet( const Type *t ) const;
779 virtual const Type *xdual() const; // Compute dual right now.
780 // Convenience common pre-built types.
781 static const TypeTuple *IFBOTH;
782 static const TypeTuple *IFFALSE;
783 static const TypeTuple *IFTRUE;
784 static const TypeTuple *IFNEITHER;
785 static const TypeTuple *LOOPBODY;
786 static const TypeTuple *MEMBAR;
787 static const TypeTuple *STORECONDITIONAL;
788 static const TypeTuple *START_I2C;
789 static const TypeTuple *INT_PAIR;
790 static const TypeTuple *LONG_PAIR;
791 static const TypeTuple *INT_CC_PAIR;
792 static const TypeTuple *LONG_CC_PAIR;
793 #ifndef PRODUCT
794 virtual void dump2( Dict &d, uint, outputStream *st ) const; // Specialized per-Type dumping
795 #endif
796 };
797
798 //------------------------------TypeAry----------------------------------------
799 // Class of Array Types
800 class TypeAry : public Type {
801 TypeAry(const Type* elem, const TypeInt* size, bool stable) : Type(Array),
802 _elem(elem), _size(size), _stable(stable) {}
803 public:
804 virtual bool eq( const Type *t ) const;
805 virtual uint hash() const; // Type specific hashing
806 virtual bool singleton(void) const; // TRUE if type is a singleton
807 virtual bool empty(void) const; // TRUE if type is vacuous
808
809 private:
810 const Type *_elem; // Element type of array
811 const TypeInt *_size; // Elements in array
812 const bool _stable; // Are elements @Stable?
813 friend class TypeAryPtr;
814
815 public:
816 static const TypeAry* make(const Type* elem, const TypeInt* size, bool stable = false);
817
818 virtual const Type *xmeet( const Type *t ) const;
819 virtual const Type *xdual() const; // Compute dual right now.
820 bool ary_must_be_exact() const; // true if arrays of such are never generic
821 virtual const TypeAry* remove_speculative() const;
822 virtual const Type* cleanup_speculative() const;
823 #ifndef PRODUCT
824 virtual void dump2( Dict &d, uint, outputStream *st ) const; // Specialized per-Type dumping
825 #endif
826 };
827
828 //------------------------------TypeVect---------------------------------------
829 // Class of Vector Types
830 class TypeVect : public Type {
831 const BasicType _elem_bt; // Vector's element type
832 const uint _length; // Elements in vector (power of 2)
833
834 protected:
835 TypeVect(TYPES t, BasicType elem_bt, uint length) : Type(t),
836 _elem_bt(elem_bt), _length(length) {}
837
838 public:
839 BasicType element_basic_type() const { return _elem_bt; }
840 uint length() const { return _length; }
841 uint length_in_bytes() const {
842 return _length * type2aelembytes(element_basic_type());
843 }
844
845 virtual bool eq(const Type* t) const;
846 virtual uint hash() const; // Type specific hashing
847 virtual bool singleton(void) const; // TRUE if type is a singleton
848 virtual bool empty(void) const; // TRUE if type is vacuous
849
850 static const TypeVect* make(const BasicType elem_bt, uint length, bool is_mask = false);
851 static const TypeVect* makemask(const BasicType elem_bt, uint length);
852
853 virtual const Type* xmeet( const Type *t) const;
854 virtual const Type* xdual() const; // Compute dual right now.
855
856 static const TypeVect* VECTA;
857 static const TypeVect* VECTS;
858 static const TypeVect* VECTD;
859 static const TypeVect* VECTX;
860 static const TypeVect* VECTY;
861 static const TypeVect* VECTZ;
862 static const TypeVect* VECTMASK;
863
864 #ifndef PRODUCT
865 virtual void dump2(Dict& d, uint, outputStream* st) const; // Specialized per-Type dumping
866 #endif
867 };
868
869 class TypeVectA : public TypeVect {
870 friend class TypeVect;
871 TypeVectA(BasicType elem_bt, uint length) : TypeVect(VectorA, elem_bt, length) {}
872 };
873
874 class TypeVectS : public TypeVect {
875 friend class TypeVect;
876 TypeVectS(BasicType elem_bt, uint length) : TypeVect(VectorS, elem_bt, length) {}
877 };
878
879 class TypeVectD : public TypeVect {
880 friend class TypeVect;
881 TypeVectD(BasicType elem_bt, uint length) : TypeVect(VectorD, elem_bt, length) {}
882 };
883
884 class TypeVectX : public TypeVect {
885 friend class TypeVect;
886 TypeVectX(BasicType elem_bt, uint length) : TypeVect(VectorX, elem_bt, length) {}
887 };
888
889 class TypeVectY : public TypeVect {
890 friend class TypeVect;
891 TypeVectY(BasicType elem_bt, uint length) : TypeVect(VectorY, elem_bt, length) {}
892 };
893
894 class TypeVectZ : public TypeVect {
895 friend class TypeVect;
896 TypeVectZ(BasicType elem_bt, uint length) : TypeVect(VectorZ, elem_bt, length) {}
897 };
898
899 class TypeVectMask : public TypeVect {
900 public:
901 friend class TypeVect;
902 TypeVectMask(BasicType elem_bt, uint length) : TypeVect(VectorMask, elem_bt, length) {}
903 static const TypeVectMask* make(const BasicType elem_bt, uint length);
904 };
905
906 // Set of implemented interfaces. Referenced from TypeOopPtr and TypeKlassPtr.
907 class TypeInterfaces : public Type {
908 private:
909 GrowableArrayFromArray<ciInstanceKlass*> _interfaces;
910 uint _hash;
911 ciInstanceKlass* _exact_klass;
912 DEBUG_ONLY(bool _initialized;)
913
914 void initialize();
915
916 void verify() const NOT_DEBUG_RETURN;
917 void compute_hash();
918 void compute_exact_klass();
919
920 TypeInterfaces(ciInstanceKlass** interfaces_base, int nb_interfaces);
921
922 NONCOPYABLE(TypeInterfaces);
923 public:
924 static const TypeInterfaces* make(GrowableArray<ciInstanceKlass*>* interfaces = nullptr);
925 bool eq(const Type* other) const;
926 bool eq(ciInstanceKlass* k) const;
927 uint hash() const;
928 const Type *xdual() const;
929 void dump(outputStream* st) const;
930 const TypeInterfaces* union_with(const TypeInterfaces* other) const;
931 const TypeInterfaces* intersection_with(const TypeInterfaces* other) const;
932 bool contains(const TypeInterfaces* other) const {
933 return intersection_with(other)->eq(other);
934 }
935 bool empty() const { return _interfaces.length() == 0; }
936
937 ciInstanceKlass* exact_klass() const;
938 void verify_is_loaded() const NOT_DEBUG_RETURN;
939
940 static int compare(ciInstanceKlass* const& k1, ciInstanceKlass* const& k2);
941 static int compare(ciInstanceKlass** k1, ciInstanceKlass** k2);
942
943 const Type* xmeet(const Type* t) const;
944
945 bool singleton(void) const;
946 };
947
948 //------------------------------TypePtr----------------------------------------
949 // Class of machine Pointer Types: raw data, instances or arrays.
950 // If the _base enum is AnyPtr, then this refers to all of the above.
951 // Otherwise the _base will indicate which subset of pointers is affected,
952 // and the class will be inherited from.
953 class TypePtr : public Type {
954 friend class TypeNarrowPtr;
955 friend class Type;
956 protected:
957 static const TypeInterfaces* interfaces(ciKlass*& k, bool klass, bool interface, bool array, InterfaceHandling interface_handling);
958
959 public:
960 enum PTR { TopPTR, AnyNull, Constant, Null, NotNull, BotPTR, lastPTR };
961 protected:
962 TypePtr(TYPES t, PTR ptr, int offset,
963 const TypePtr* speculative = nullptr,
964 int inline_depth = InlineDepthBottom) :
965 Type(t), _speculative(speculative), _inline_depth(inline_depth), _offset(offset),
966 _ptr(ptr) {}
967 static const PTR ptr_meet[lastPTR][lastPTR];
968 static const PTR ptr_dual[lastPTR];
969 static const char * const ptr_msg[lastPTR];
970
971 enum {
972 InlineDepthBottom = INT_MAX,
973 InlineDepthTop = -InlineDepthBottom
974 };
975
976 // Extra type information profiling gave us. We propagate it the
977 // same way the rest of the type info is propagated. If we want to
978 // use it, then we have to emit a guard: this part of the type is
979 // not something we know but something we speculate about the type.
980 const TypePtr* _speculative;
981 // For speculative types, we record at what inlining depth the
982 // profiling point that provided the data is. We want to favor
983 // profile data coming from outer scopes which are likely better for
984 // the current compilation.
985 int _inline_depth;
986
987 // utility methods to work on the speculative part of the type
988 const TypePtr* dual_speculative() const;
989 const TypePtr* xmeet_speculative(const TypePtr* other) const;
990 bool eq_speculative(const TypePtr* other) const;
991 int hash_speculative() const;
992 const TypePtr* add_offset_speculative(intptr_t offset) const;
993 const TypePtr* with_offset_speculative(intptr_t offset) const;
994 #ifndef PRODUCT
995 void dump_speculative(outputStream *st) const;
996 #endif
997
998 // utility methods to work on the inline depth of the type
999 int dual_inline_depth() const;
1000 int meet_inline_depth(int depth) const;
1001 #ifndef PRODUCT
1002 void dump_inline_depth(outputStream *st) const;
1003 #endif
1004
1005 // TypeInstPtr (TypeAryPtr resp.) and TypeInstKlassPtr (TypeAryKlassPtr resp.) implement very similar meet logic.
1006 // The logic for meeting 2 instances (2 arrays resp.) is shared in the 2 utility methods below. However the logic for
1007 // the oop and klass versions can be slightly different and extra logic may have to be executed depending on what
1008 // exact case the meet falls into. The MeetResult struct is used by the utility methods to communicate what case was
1009 // encountered so the right logic specific to klasses or oops can be executed.,
1010 enum MeetResult {
1011 QUICK,
1012 UNLOADED,
1013 SUBTYPE,
1014 NOT_SUBTYPE,
1015 LCA
1016 };
1017 template<class T> static TypePtr::MeetResult meet_instptr(PTR& ptr, const TypeInterfaces*& interfaces, const T* this_type,
1018 const T* other_type, ciKlass*& res_klass, bool& res_xk);
1019
1020 template<class T> static MeetResult meet_aryptr(PTR& ptr, const Type*& elem, const T* this_ary, const T* other_ary,
1021 ciKlass*& res_klass, bool& res_xk);
1022
1023 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);
1024 template <class T1, class T2> static bool is_same_java_type_as_helper_for_instance(const T1* this_one, const T2* other);
1025 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);
1026 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);
1027 template <class T1, class T2> static bool is_same_java_type_as_helper_for_array(const T1* this_one, const T2* other);
1028 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);
1029 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);
1030 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);
1031 public:
1032 const int _offset; // Offset into oop, with TOP & BOT
1033 const PTR _ptr; // Pointer equivalence class
1034
1035 int offset() const { return _offset; }
1036 PTR ptr() const { return _ptr; }
1037
1038 static const TypePtr *make(TYPES t, PTR ptr, int offset,
1039 const TypePtr* speculative = nullptr,
1040 int inline_depth = InlineDepthBottom);
1041
1042 // Return a 'ptr' version of this type
1043 virtual const TypePtr* cast_to_ptr_type(PTR ptr) const;
1044
1045 virtual intptr_t get_con() const;
1046
1047 int xadd_offset( intptr_t offset ) const;
1048 virtual const TypePtr* add_offset(intptr_t offset) const;
1049 virtual const TypePtr* with_offset(intptr_t offset) const;
1050 virtual bool eq(const Type *t) const;
1051 virtual uint hash() const; // Type specific hashing
1052
1053 virtual bool singleton(void) const; // TRUE if type is a singleton
1054 virtual bool empty(void) const; // TRUE if type is vacuous
1055 virtual const Type *xmeet( const Type *t ) const;
1056 virtual const Type *xmeet_helper( const Type *t ) const;
1057 int meet_offset( int offset ) const;
1058 int dual_offset( ) const;
1059 virtual const Type *xdual() const; // Compute dual right now.
1060
1061 // meet, dual and join over pointer equivalence sets
1062 PTR meet_ptr( const PTR in_ptr ) const { return ptr_meet[in_ptr][ptr()]; }
1063 PTR dual_ptr() const { return ptr_dual[ptr()]; }
1064
1065 // This is textually confusing unless one recalls that
1066 // join(t) == dual()->meet(t->dual())->dual().
1067 PTR join_ptr( const PTR in_ptr ) const {
1068 return ptr_dual[ ptr_meet[ ptr_dual[in_ptr] ] [ dual_ptr() ] ];
1069 }
1070
1071 // Speculative type helper methods.
1072 virtual const TypePtr* speculative() const { return _speculative; }
1073 int inline_depth() const { return _inline_depth; }
1074 virtual ciKlass* speculative_type() const;
1075 virtual ciKlass* speculative_type_not_null() const;
1076 virtual bool speculative_maybe_null() const;
1077 virtual bool speculative_always_null() const;
1078 virtual const TypePtr* remove_speculative() const;
1079 virtual const Type* cleanup_speculative() const;
1080 virtual bool would_improve_type(ciKlass* exact_kls, int inline_depth) const;
1081 virtual bool would_improve_ptr(ProfilePtrKind maybe_null) const;
1082 virtual const TypePtr* with_inline_depth(int depth) const;
1083
1084 virtual bool maybe_null() const { return meet_ptr(Null) == ptr(); }
1085
1086 // Tests for relation to centerline of type lattice:
1087 static bool above_centerline(PTR ptr) { return (ptr <= AnyNull); }
1088 static bool below_centerline(PTR ptr) { return (ptr >= NotNull); }
1089 // Convenience common pre-built types.
1090 static const TypePtr *NULL_PTR;
1091 static const TypePtr *NOTNULL;
1092 static const TypePtr *BOTTOM;
1093 #ifndef PRODUCT
1094 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
1095 #endif
1096 };
1097
1098 //------------------------------TypeRawPtr-------------------------------------
1099 // Class of raw pointers, pointers to things other than Oops. Examples
1100 // include the stack pointer, top of heap, card-marking area, handles, etc.
1101 class TypeRawPtr : public TypePtr {
1102 protected:
1103 TypeRawPtr( PTR ptr, address bits ) : TypePtr(RawPtr,ptr,0), _bits(bits){}
1104 public:
1105 virtual bool eq( const Type *t ) const;
1106 virtual uint hash() const; // Type specific hashing
1107
1108 const address _bits; // Constant value, if applicable
1109
1110 static const TypeRawPtr *make( PTR ptr );
1111 static const TypeRawPtr *make( address bits );
1112
1113 // Return a 'ptr' version of this type
1114 virtual const TypeRawPtr* cast_to_ptr_type(PTR ptr) const;
1115
1116 virtual intptr_t get_con() const;
1117
1118 virtual const TypePtr* add_offset(intptr_t offset) const;
1119 virtual const TypeRawPtr* with_offset(intptr_t offset) const { ShouldNotReachHere(); return nullptr;}
1120
1121 virtual const Type *xmeet( const Type *t ) const;
1122 virtual const Type *xdual() const; // Compute dual right now.
1123 // Convenience common pre-built types.
1124 static const TypeRawPtr *BOTTOM;
1125 static const TypeRawPtr *NOTNULL;
1126 #ifndef PRODUCT
1127 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
1128 #endif
1129 };
1130
1131 //------------------------------TypeOopPtr-------------------------------------
1132 // Some kind of oop (Java pointer), either instance or array.
1133 class TypeOopPtr : public TypePtr {
1134 friend class TypeAry;
1135 friend class TypePtr;
1136 friend class TypeInstPtr;
1137 friend class TypeAryPtr;
1138 protected:
1139 TypeOopPtr(TYPES t, PTR ptr, ciKlass* k, const TypeInterfaces* interfaces, bool xk, ciObject* o, int offset, int instance_id,
1140 const TypePtr* speculative, int inline_depth);
1141 public:
1142 virtual bool eq( const Type *t ) const;
1143 virtual uint hash() const; // Type specific hashing
1144 virtual bool singleton(void) const; // TRUE if type is a singleton
1145 enum {
1146 InstanceTop = -1, // undefined instance
1147 InstanceBot = 0 // any possible instance
1148 };
1149 protected:
1150
1151 // Oop is null, unless this is a constant oop.
1152 ciObject* _const_oop; // Constant oop
1153 // If _klass is null, then so is _sig. This is an unloaded klass.
1154 ciKlass* _klass; // Klass object
1155
1156 const TypeInterfaces* _interfaces;
1157
1158 // Does the type exclude subclasses of the klass? (Inexact == polymorphic.)
1159 bool _klass_is_exact;
1160 bool _is_ptr_to_narrowoop;
1161 bool _is_ptr_to_narrowklass;
1162 bool _is_ptr_to_boxed_value;
1163
1164 // If not InstanceTop or InstanceBot, indicates that this is
1165 // a particular instance of this type which is distinct.
1166 // This is the node index of the allocation node creating this instance.
1167 int _instance_id;
1168
1169 static const TypeOopPtr* make_from_klass_common(ciKlass* klass, bool klass_change, bool try_for_exact, InterfaceHandling interface_handling);
1170
1171 int dual_instance_id() const;
1172 int meet_instance_id(int uid) const;
1173
1174 const TypeInterfaces* meet_interfaces(const TypeOopPtr* other) const;
1175
1176 // Do not allow interface-vs.-noninterface joins to collapse to top.
1177 virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
1178
1179 virtual ciKlass* exact_klass_helper() const { return nullptr; }
1180 virtual ciKlass* klass() const { return _klass; }
1181
1182 public:
1183
1184 bool is_java_subtype_of(const TypeOopPtr* other) const {
1185 return is_java_subtype_of_helper(other, klass_is_exact(), other->klass_is_exact());
1186 }
1187
1188 bool is_same_java_type_as(const TypePtr* other) const {
1189 return is_same_java_type_as_helper(other->is_oopptr());
1190 }
1191
1192 virtual bool is_same_java_type_as_helper(const TypeOopPtr* other) const {
1193 ShouldNotReachHere(); return false;
1194 }
1195
1196 bool maybe_java_subtype_of(const TypeOopPtr* other) const {
1197 return maybe_java_subtype_of_helper(other, klass_is_exact(), other->klass_is_exact());
1198 }
1199 virtual bool is_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const { ShouldNotReachHere(); return false; }
1200 virtual bool maybe_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const { ShouldNotReachHere(); return false; }
1201
1202
1203 // Creates a type given a klass. Correctly handles multi-dimensional arrays
1204 // Respects UseUniqueSubclasses.
1205 // If the klass is final, the resulting type will be exact.
1206 static const TypeOopPtr* make_from_klass(ciKlass* klass, InterfaceHandling interface_handling = ignore_interfaces) {
1207 return make_from_klass_common(klass, true, false, interface_handling);
1208 }
1209 // Same as before, but will produce an exact type, even if
1210 // the klass is not final, as long as it has exactly one implementation.
1211 static const TypeOopPtr* make_from_klass_unique(ciKlass* klass, InterfaceHandling interface_handling= ignore_interfaces) {
1212 return make_from_klass_common(klass, true, true, interface_handling);
1213 }
1214 // Same as before, but does not respects UseUniqueSubclasses.
1215 // Use this only for creating array element types.
1216 static const TypeOopPtr* make_from_klass_raw(ciKlass* klass, InterfaceHandling interface_handling = ignore_interfaces) {
1217 return make_from_klass_common(klass, false, false, interface_handling);
1218 }
1219 // Creates a singleton type given an object.
1220 // If the object cannot be rendered as a constant,
1221 // may return a non-singleton type.
1222 // If require_constant, produce a null if a singleton is not possible.
1223 static const TypeOopPtr* make_from_constant(ciObject* o,
1224 bool require_constant = false);
1225
1226 // Make a generic (unclassed) pointer to an oop.
1227 static const TypeOopPtr* make(PTR ptr, int offset, int instance_id,
1228 const TypePtr* speculative = nullptr,
1229 int inline_depth = InlineDepthBottom);
1230
1231 ciObject* const_oop() const { return _const_oop; }
1232 // Exact klass, possibly an interface or an array of interface
1233 ciKlass* exact_klass(bool maybe_null = false) const { assert(klass_is_exact(), ""); ciKlass* k = exact_klass_helper(); assert(k != nullptr || maybe_null, ""); return k; }
1234 ciKlass* unloaded_klass() const { assert(!is_loaded(), "only for unloaded types"); return klass(); }
1235
1236 virtual bool is_loaded() const { return klass()->is_loaded(); }
1237 virtual bool klass_is_exact() const { return _klass_is_exact; }
1238
1239 // Returns true if this pointer points at memory which contains a
1240 // compressed oop references.
1241 bool is_ptr_to_narrowoop_nv() const { return _is_ptr_to_narrowoop; }
1242 bool is_ptr_to_narrowklass_nv() const { return _is_ptr_to_narrowklass; }
1243 bool is_ptr_to_boxed_value() const { return _is_ptr_to_boxed_value; }
1244 bool is_known_instance() const { return _instance_id > 0; }
1245 int instance_id() const { return _instance_id; }
1246 bool is_known_instance_field() const { return is_known_instance() && _offset >= 0; }
1247
1248 virtual intptr_t get_con() const;
1249
1250 virtual const TypeOopPtr* cast_to_ptr_type(PTR ptr) const;
1251
1252 virtual const TypeOopPtr* cast_to_exactness(bool klass_is_exact) const;
1253
1254 virtual const TypeOopPtr *cast_to_instance_id(int instance_id) const;
1255
1256 // corresponding pointer to klass, for a given instance
1257 virtual const TypeKlassPtr* as_klass_type(bool try_for_exact = false) const;
1258
1259 virtual const TypeOopPtr* with_offset(intptr_t offset) const;
1260 virtual const TypePtr* add_offset(intptr_t offset) const;
1261
1262 // Speculative type helper methods.
1263 virtual const TypeOopPtr* remove_speculative() const;
1264 virtual const Type* cleanup_speculative() const;
1265 virtual bool would_improve_type(ciKlass* exact_kls, int inline_depth) const;
1266 virtual const TypePtr* with_inline_depth(int depth) const;
1267
1268 virtual const TypePtr* with_instance_id(int instance_id) const;
1269
1270 virtual const Type *xdual() const; // Compute dual right now.
1271 // the core of the computation of the meet for TypeOopPtr and for its subclasses
1272 virtual const Type *xmeet_helper(const Type *t) const;
1273
1274 // Convenience common pre-built type.
1275 static const TypeOopPtr *BOTTOM;
1276 #ifndef PRODUCT
1277 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
1278 #endif
1279 private:
1280 virtual bool is_meet_subtype_of(const TypePtr* other) const {
1281 return is_meet_subtype_of_helper(other->is_oopptr(), klass_is_exact(), other->is_oopptr()->klass_is_exact());
1282 }
1283
1284 virtual bool is_meet_subtype_of_helper(const TypeOopPtr* other, bool this_xk, bool other_xk) const {
1285 ShouldNotReachHere(); return false;
1286 }
1287
1288 virtual const TypeInterfaces* interfaces() const {
1289 return _interfaces;
1290 };
1291
1292 const TypeOopPtr* is_reference_type(const Type* other) const {
1293 return other->isa_oopptr();
1294 }
1295
1296 const TypeAryPtr* is_array_type(const TypeOopPtr* other) const {
1297 return other->isa_aryptr();
1298 }
1299
1300 const TypeInstPtr* is_instance_type(const TypeOopPtr* other) const {
1301 return other->isa_instptr();
1302 }
1303 };
1304
1305 //------------------------------TypeInstPtr------------------------------------
1306 // Class of Java object pointers, pointing either to non-array Java instances
1307 // or to a Klass* (including array klasses).
1308 class TypeInstPtr : public TypeOopPtr {
1309 TypeInstPtr(PTR ptr, ciKlass* k, const TypeInterfaces* interfaces, bool xk, ciObject* o, int off, int instance_id,
1310 const TypePtr* speculative, int inline_depth);
1311 virtual bool eq( const Type *t ) const;
1312 virtual uint hash() const; // Type specific hashing
1313
1314 ciKlass* exact_klass_helper() const;
1315
1316 public:
1317
1318 // Instance klass, ignoring any interface
1319 ciInstanceKlass* instance_klass() const {
1320 assert(!(klass()->is_loaded() && klass()->is_interface()), "");
1321 return klass()->as_instance_klass();
1322 }
1323
1324 bool is_same_java_type_as_helper(const TypeOopPtr* other) const;
1325 bool is_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const;
1326 bool maybe_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const;
1327
1328 // Make a pointer to a constant oop.
1329 static const TypeInstPtr *make(ciObject* o) {
1330 ciKlass* k = o->klass();
1331 const TypeInterfaces* interfaces = TypePtr::interfaces(k, true, false, false, ignore_interfaces);
1332 return make(TypePtr::Constant, k, interfaces, true, o, 0, InstanceBot);
1333 }
1334 // Make a pointer to a constant oop with offset.
1335 static const TypeInstPtr *make(ciObject* o, int offset) {
1336 ciKlass* k = o->klass();
1337 const TypeInterfaces* interfaces = TypePtr::interfaces(k, true, false, false, ignore_interfaces);
1338 return make(TypePtr::Constant, k, interfaces, true, o, offset, InstanceBot);
1339 }
1340
1341 // Make a pointer to some value of type klass.
1342 static const TypeInstPtr *make(PTR ptr, ciKlass* klass, InterfaceHandling interface_handling = ignore_interfaces) {
1343 const TypeInterfaces* interfaces = TypePtr::interfaces(klass, true, true, false, interface_handling);
1344 return make(ptr, klass, interfaces, false, nullptr, 0, InstanceBot);
1345 }
1346
1347 // Make a pointer to some non-polymorphic value of exactly type klass.
1348 static const TypeInstPtr *make_exact(PTR ptr, ciKlass* klass) {
1349 const TypeInterfaces* interfaces = TypePtr::interfaces(klass, true, false, false, ignore_interfaces);
1350 return make(ptr, klass, interfaces, true, nullptr, 0, InstanceBot);
1351 }
1352
1353 // Make a pointer to some value of type klass with offset.
1354 static const TypeInstPtr *make(PTR ptr, ciKlass* klass, int offset) {
1355 const TypeInterfaces* interfaces = TypePtr::interfaces(klass, true, false, false, ignore_interfaces);
1356 return make(ptr, klass, interfaces, false, nullptr, offset, InstanceBot);
1357 }
1358
1359 static const TypeInstPtr *make(PTR ptr, ciKlass* k, const TypeInterfaces* interfaces, bool xk, ciObject* o, int offset,
1360 int instance_id = InstanceBot,
1361 const TypePtr* speculative = nullptr,
1362 int inline_depth = InlineDepthBottom);
1363
1364 static const TypeInstPtr *make(PTR ptr, ciKlass* k, bool xk, ciObject* o, int offset, int instance_id = InstanceBot) {
1365 const TypeInterfaces* interfaces = TypePtr::interfaces(k, true, false, false, ignore_interfaces);
1366 return make(ptr, k, interfaces, xk, o, offset, instance_id);
1367 }
1368
1369 /** Create constant type for a constant boxed value */
1370 const Type* get_const_boxed_value() const;
1371
1372 // If this is a java.lang.Class constant, return the type for it or null.
1373 // Pass to Type::get_const_type to turn it to a type, which will usually
1374 // be a TypeInstPtr, but may also be a TypeInt::INT for int.class, etc.
1375 ciType* java_mirror_type() const;
1376
1377 virtual const TypeInstPtr* cast_to_ptr_type(PTR ptr) const;
1378
1379 virtual const TypeInstPtr* cast_to_exactness(bool klass_is_exact) const;
1380
1381 virtual const TypeInstPtr* cast_to_instance_id(int instance_id) const;
1382
1383 virtual const TypePtr* add_offset(intptr_t offset) const;
1384 virtual const TypeInstPtr* with_offset(intptr_t offset) const;
1385
1386 // Speculative type helper methods.
1387 virtual const TypeInstPtr* remove_speculative() const;
1388 const TypeInstPtr* with_speculative(const TypePtr* speculative) const;
1389 virtual const TypePtr* with_inline_depth(int depth) const;
1390 virtual const TypePtr* with_instance_id(int instance_id) const;
1391
1392 // the core of the computation of the meet of 2 types
1393 virtual const Type *xmeet_helper(const Type *t) const;
1394 virtual const TypeInstPtr *xmeet_unloaded(const TypeInstPtr *tinst, const TypeInterfaces* interfaces) const;
1395 virtual const Type *xdual() const; // Compute dual right now.
1396
1397 const TypeKlassPtr* as_klass_type(bool try_for_exact = false) const;
1398
1399 // Convenience common pre-built types.
1400 static const TypeInstPtr *NOTNULL;
1401 static const TypeInstPtr *BOTTOM;
1402 static const TypeInstPtr *MIRROR;
1403 static const TypeInstPtr *MARK;
1404 static const TypeInstPtr *KLASS;
1405 #ifndef PRODUCT
1406 virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
1407 #endif
1408
1409 private:
1410 virtual bool is_meet_subtype_of_helper(const TypeOopPtr* other, bool this_xk, bool other_xk) const;
1411
1412 virtual bool is_meet_same_type_as(const TypePtr* other) const {
1413 return _klass->equals(other->is_instptr()->_klass) && _interfaces->eq(other->is_instptr()->_interfaces);
1414 }
1415
1416 };
1417
1418 //------------------------------TypeAryPtr-------------------------------------
1419 // Class of Java array pointers
1420 class TypeAryPtr : public TypeOopPtr {
1421 friend class Type;
1422 friend class TypePtr;
1423
1424 TypeAryPtr( PTR ptr, ciObject* o, const TypeAry *ary, ciKlass* k, bool xk,
1425 int offset, int instance_id, bool is_autobox_cache,
1426 const TypePtr* speculative, int inline_depth)
1427 : TypeOopPtr(AryPtr,ptr,k,_array_interfaces,xk,o,offset, instance_id, speculative, inline_depth),
1428 _ary(ary),
1429 _is_autobox_cache(is_autobox_cache)
1430 {
1431 int dummy;
1432 bool top_or_bottom = (base_element_type(dummy) == Type::TOP || base_element_type(dummy) == Type::BOTTOM);
1433
1434 if (UseCompressedOops && (elem()->make_oopptr() != nullptr && !top_or_bottom) &&
1435 _offset != 0 && _offset != arrayOopDesc::length_offset_in_bytes() &&
1436 _offset != arrayOopDesc::klass_offset_in_bytes()) {
1437 _is_ptr_to_narrowoop = true;
1438 }
1439
1440 }
1441 virtual bool eq( const Type *t ) const;
1442 virtual uint hash() const; // Type specific hashing
1443 const TypeAry *_ary; // Array we point into
1444 const bool _is_autobox_cache;
1445
1446 ciKlass* compute_klass() const;
1447
1448 // A pointer to delay allocation to Type::Initialize_shared()
1449
1450 static const TypeInterfaces* _array_interfaces;
1451 ciKlass* exact_klass_helper() const;
1452 // Only guaranteed non null for array of basic types
1453 ciKlass* klass() const;
1454
1455 public:
1456
1457 bool is_same_java_type_as_helper(const TypeOopPtr* other) const;
1458 bool is_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const;
1459 bool maybe_java_subtype_of_helper(const TypeOopPtr* other, bool this_exact, bool other_exact) const;
1460
1461 // returns base element type, an instance klass (and not interface) for object arrays
1462 const Type* base_element_type(int& dims) const;
1463
1464 // Accessors
1465 bool is_loaded() const { return (_ary->_elem->make_oopptr() ? _ary->_elem->make_oopptr()->is_loaded() : true); }
1466
1467 const TypeAry* ary() const { return _ary; }
1468 const Type* elem() const { return _ary->_elem; }
1469 const TypeInt* size() const { return _ary->_size; }
1470 bool is_stable() const { return _ary->_stable; }
1471
1472 bool is_autobox_cache() const { return _is_autobox_cache; }
1473
1474 static const TypeAryPtr *make(PTR ptr, const TypeAry *ary, ciKlass* k, bool xk, int offset,
1475 int instance_id = InstanceBot,
1476 const TypePtr* speculative = nullptr,
1477 int inline_depth = InlineDepthBottom);
1478 // Constant pointer to array
1479 static const TypeAryPtr *make(PTR ptr, ciObject* o, const TypeAry *ary, ciKlass* k, bool xk, int offset,
1480 int instance_id = InstanceBot,
1481 const TypePtr* speculative = nullptr,
1482 int inline_depth = InlineDepthBottom, bool is_autobox_cache = false);
1483
1484 // Return a 'ptr' version of this type
1485 virtual const TypeAryPtr* cast_to_ptr_type(PTR ptr) const;
1486
1487 virtual const TypeAryPtr* cast_to_exactness(bool klass_is_exact) const;
1488
1489 virtual const TypeAryPtr* cast_to_instance_id(int instance_id) const;
1490
1491 virtual const TypeAryPtr* cast_to_size(const TypeInt* size) const;
1492 virtual const TypeInt* narrow_size_type(const TypeInt* size) const;
1493
1494 virtual bool empty(void) const; // TRUE if type is vacuous
1495 virtual const TypePtr *add_offset( intptr_t offset ) const;
1496 virtual const TypeAryPtr *with_offset( intptr_t offset ) const;
1497 const TypeAryPtr* with_ary(const TypeAry* ary) const;
1498
1499 // Speculative type helper methods.
1500 virtual const TypeAryPtr* remove_speculative() const;
1501 virtual const TypePtr* with_inline_depth(int depth) const;
1502 virtual const TypePtr* with_instance_id(int instance_id) const;
1503
1504 // the core of the computation of the meet of 2 types
1505 virtual const Type *xmeet_helper(const Type *t) const;
1506 virtual const Type *xdual() const; // Compute dual right now.
1507
1508 const TypeAryPtr* cast_to_stable(bool stable, int stable_dimension = 1) const;
1509 int stable_dimension() const;
1510
1511 const TypeAryPtr* cast_to_autobox_cache() const;
1512
1513 static jint max_array_length(BasicType etype) ;
1514 virtual const TypeKlassPtr* as_klass_type(bool try_for_exact = false) const;
1515
1516 // Convenience common pre-built types.
1517 static const TypeAryPtr* BOTTOM;
1518 static const TypeAryPtr* RANGE;
1519 static const TypeAryPtr* OOPS;
1520 static const TypeAryPtr* NARROWOOPS;
1521 static const TypeAryPtr* BYTES;
1522 static const TypeAryPtr* SHORTS;
1523 static const TypeAryPtr* CHARS;
1524 static const TypeAryPtr* INTS;
1525 static const TypeAryPtr* LONGS;
1526 static const TypeAryPtr* FLOATS;
1527 static const TypeAryPtr* DOUBLES;
1528 // selects one of the above:
1529 static const TypeAryPtr *get_array_body_type(BasicType elem) {
1530 assert((uint)elem <= T_CONFLICT && _array_body_type[elem] != nullptr, "bad elem type");
1531 return _array_body_type[elem];
1532 }
1533 static const TypeAryPtr *_array_body_type[T_CONFLICT+1];
1534 // sharpen the type of an int which is used as an array size
1535 #ifndef PRODUCT
1536 virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
1537 #endif
1538 private:
1539 virtual bool is_meet_subtype_of_helper(const TypeOopPtr* other, bool this_xk, bool other_xk) const;
1540 };
1541
1542 //------------------------------TypeMetadataPtr-------------------------------------
1543 // Some kind of metadata, either Method*, MethodData* or CPCacheOop
1544 class TypeMetadataPtr : public TypePtr {
1545 protected:
1546 TypeMetadataPtr(PTR ptr, ciMetadata* metadata, int offset);
1547 // Do not allow interface-vs.-noninterface joins to collapse to top.
1548 virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
1549 public:
1550 virtual bool eq( const Type *t ) const;
1551 virtual uint hash() const; // Type specific hashing
1552 virtual bool singleton(void) const; // TRUE if type is a singleton
1553
1554 private:
1555 ciMetadata* _metadata;
1556
1557 public:
1558 static const TypeMetadataPtr* make(PTR ptr, ciMetadata* m, int offset);
1559
1560 static const TypeMetadataPtr* make(ciMethod* m);
1561 static const TypeMetadataPtr* make(ciMethodData* m);
1562
1563 ciMetadata* metadata() const { return _metadata; }
1564
1565 virtual const TypeMetadataPtr* cast_to_ptr_type(PTR ptr) const;
1566
1567 virtual const TypePtr *add_offset( intptr_t offset ) const;
1568
1569 virtual const Type *xmeet( const Type *t ) const;
1570 virtual const Type *xdual() const; // Compute dual right now.
1571
1572 virtual intptr_t get_con() const;
1573
1574 // Convenience common pre-built types.
1575 static const TypeMetadataPtr *BOTTOM;
1576
1577 #ifndef PRODUCT
1578 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
1579 #endif
1580 };
1581
1582 //------------------------------TypeKlassPtr-----------------------------------
1583 // Class of Java Klass pointers
1584 class TypeKlassPtr : public TypePtr {
1585 friend class TypeInstKlassPtr;
1586 friend class TypeAryKlassPtr;
1587 friend class TypePtr;
1588 protected:
1589 TypeKlassPtr(TYPES t, PTR ptr, ciKlass* klass, const TypeInterfaces* interfaces, int offset);
1590
1591 virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
1592
1593 public:
1594 virtual bool eq( const Type *t ) const;
1595 virtual uint hash() const;
1596 virtual bool singleton(void) const; // TRUE if type is a singleton
1597
1598 protected:
1599
1600 ciKlass* _klass;
1601 const TypeInterfaces* _interfaces;
1602 const TypeInterfaces* meet_interfaces(const TypeKlassPtr* other) const;
1603 virtual bool must_be_exact() const { ShouldNotReachHere(); return false; }
1604 virtual ciKlass* exact_klass_helper() const;
1605 virtual ciKlass* klass() const { return _klass; }
1606
1607 public:
1608
1609 bool is_java_subtype_of(const TypeKlassPtr* other) const {
1610 return is_java_subtype_of_helper(other, klass_is_exact(), other->klass_is_exact());
1611 }
1612 bool is_same_java_type_as(const TypePtr* other) const {
1613 return is_same_java_type_as_helper(other->is_klassptr());
1614 }
1615
1616 bool maybe_java_subtype_of(const TypeKlassPtr* other) const {
1617 return maybe_java_subtype_of_helper(other, klass_is_exact(), other->klass_is_exact());
1618 }
1619 virtual bool is_same_java_type_as_helper(const TypeKlassPtr* other) const { ShouldNotReachHere(); return false; }
1620 virtual bool is_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const { ShouldNotReachHere(); return false; }
1621 virtual bool maybe_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const { ShouldNotReachHere(); return false; }
1622
1623 // Exact klass, possibly an interface or an array of interface
1624 ciKlass* exact_klass(bool maybe_null = false) const { assert(klass_is_exact(), ""); ciKlass* k = exact_klass_helper(); assert(k != nullptr || maybe_null, ""); return k; }
1625 virtual bool klass_is_exact() const { return _ptr == Constant; }
1626
1627 static const TypeKlassPtr* make(ciKlass* klass, InterfaceHandling interface_handling = ignore_interfaces);
1628 static const TypeKlassPtr *make(PTR ptr, ciKlass* klass, int offset, InterfaceHandling interface_handling = ignore_interfaces);
1629
1630 virtual bool is_loaded() const { return _klass->is_loaded(); }
1631
1632 virtual const TypeKlassPtr* cast_to_ptr_type(PTR ptr) const { ShouldNotReachHere(); return nullptr; }
1633
1634 virtual const TypeKlassPtr *cast_to_exactness(bool klass_is_exact) const { ShouldNotReachHere(); return nullptr; }
1635
1636 // corresponding pointer to instance, for a given class
1637 virtual const TypeOopPtr* as_instance_type(bool klass_change = true) const { ShouldNotReachHere(); return nullptr; }
1638
1639 virtual const TypePtr *add_offset( intptr_t offset ) const { ShouldNotReachHere(); return nullptr; }
1640 virtual const Type *xmeet( const Type *t ) const { ShouldNotReachHere(); return nullptr; }
1641 virtual const Type *xdual() const { ShouldNotReachHere(); return nullptr; }
1642
1643 virtual intptr_t get_con() const;
1644
1645 virtual const TypeKlassPtr* with_offset(intptr_t offset) const { ShouldNotReachHere(); return nullptr; }
1646
1647 virtual const TypeKlassPtr* try_improve() const { return this; }
1648
1649 #ifndef PRODUCT
1650 virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
1651 #endif
1652 private:
1653 virtual bool is_meet_subtype_of(const TypePtr* other) const {
1654 return is_meet_subtype_of_helper(other->is_klassptr(), klass_is_exact(), other->is_klassptr()->klass_is_exact());
1655 }
1656
1657 virtual bool is_meet_subtype_of_helper(const TypeKlassPtr* other, bool this_xk, bool other_xk) const {
1658 ShouldNotReachHere(); return false;
1659 }
1660
1661 virtual const TypeInterfaces* interfaces() const {
1662 return _interfaces;
1663 };
1664
1665 const TypeKlassPtr* is_reference_type(const Type* other) const {
1666 return other->isa_klassptr();
1667 }
1668
1669 const TypeAryKlassPtr* is_array_type(const TypeKlassPtr* other) const {
1670 return other->isa_aryklassptr();
1671 }
1672
1673 const TypeInstKlassPtr* is_instance_type(const TypeKlassPtr* other) const {
1674 return other->isa_instklassptr();
1675 }
1676 };
1677
1678 // Instance klass pointer, mirrors TypeInstPtr
1679 class TypeInstKlassPtr : public TypeKlassPtr {
1680
1681 TypeInstKlassPtr(PTR ptr, ciKlass* klass, const TypeInterfaces* interfaces, int offset)
1682 : TypeKlassPtr(InstKlassPtr, ptr, klass, interfaces, offset) {
1683 assert(klass->is_instance_klass() && (!klass->is_loaded() || !klass->is_interface()), "");
1684 }
1685
1686 virtual bool must_be_exact() const;
1687
1688 public:
1689 // Instance klass ignoring any interface
1690 ciInstanceKlass* instance_klass() const {
1691 assert(!klass()->is_interface(), "");
1692 return klass()->as_instance_klass();
1693 }
1694
1695 bool is_same_java_type_as_helper(const TypeKlassPtr* other) const;
1696 bool is_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const;
1697 bool maybe_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const;
1698
1699 static const TypeInstKlassPtr *make(ciKlass* k, InterfaceHandling interface_handling) {
1700 const TypeInterfaces* interfaces = TypePtr::interfaces(k, true, true, false, interface_handling);
1701 return make(TypePtr::Constant, k, interfaces, 0);
1702 }
1703 static const TypeInstKlassPtr* make(PTR ptr, ciKlass* k, const TypeInterfaces* interfaces, int offset);
1704
1705 static const TypeInstKlassPtr* make(PTR ptr, ciKlass* k, int offset) {
1706 const TypeInterfaces* interfaces = TypePtr::interfaces(k, true, false, false, ignore_interfaces);
1707 return make(ptr, k, interfaces, offset);
1708 }
1709
1710 virtual const TypeInstKlassPtr* cast_to_ptr_type(PTR ptr) const;
1711
1712 virtual const TypeKlassPtr *cast_to_exactness(bool klass_is_exact) const;
1713
1714 // corresponding pointer to instance, for a given class
1715 virtual const TypeOopPtr* as_instance_type(bool klass_change = true) const;
1716 virtual uint hash() const;
1717 virtual bool eq(const Type *t) const;
1718
1719 virtual const TypePtr *add_offset( intptr_t offset ) const;
1720 virtual const Type *xmeet( const Type *t ) const;
1721 virtual const Type *xdual() const;
1722 virtual const TypeInstKlassPtr* with_offset(intptr_t offset) const;
1723
1724 virtual const TypeKlassPtr* try_improve() const;
1725
1726 // Convenience common pre-built types.
1727 static const TypeInstKlassPtr* OBJECT; // Not-null object klass or below
1728 static const TypeInstKlassPtr* OBJECT_OR_NULL; // Maybe-null version of same
1729 private:
1730 virtual bool is_meet_subtype_of_helper(const TypeKlassPtr* other, bool this_xk, bool other_xk) const;
1731 };
1732
1733 // Array klass pointer, mirrors TypeAryPtr
1734 class TypeAryKlassPtr : public TypeKlassPtr {
1735 friend class TypeInstKlassPtr;
1736 friend class Type;
1737 friend class TypePtr;
1738
1739 const Type *_elem;
1740
1741 static const TypeInterfaces* _array_interfaces;
1742 TypeAryKlassPtr(PTR ptr, const Type *elem, ciKlass* klass, int offset)
1743 : TypeKlassPtr(AryKlassPtr, ptr, klass, _array_interfaces, offset), _elem(elem) {
1744 assert(klass == nullptr || klass->is_type_array_klass() || !klass->as_obj_array_klass()->base_element_klass()->is_interface(), "");
1745 }
1746
1747 virtual ciKlass* exact_klass_helper() const;
1748 // Only guaranteed non null for array of basic types
1749 virtual ciKlass* klass() const;
1750
1751 virtual bool must_be_exact() const;
1752
1753 public:
1754
1755 // returns base element type, an instance klass (and not interface) for object arrays
1756 const Type* base_element_type(int& dims) const;
1757
1758 static const TypeAryKlassPtr *make(PTR ptr, ciKlass* k, int offset, InterfaceHandling interface_handling);
1759
1760 bool is_same_java_type_as_helper(const TypeKlassPtr* other) const;
1761 bool is_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const;
1762 bool maybe_java_subtype_of_helper(const TypeKlassPtr* other, bool this_exact, bool other_exact) const;
1763
1764 bool is_loaded() const { return (_elem->isa_klassptr() ? _elem->is_klassptr()->is_loaded() : true); }
1765
1766 static const TypeAryKlassPtr *make(PTR ptr, const Type *elem, ciKlass* k, int offset);
1767 static const TypeAryKlassPtr* make(ciKlass* klass, InterfaceHandling interface_handling);
1768
1769 const Type *elem() const { return _elem; }
1770
1771 virtual bool eq(const Type *t) const;
1772 virtual uint hash() const; // Type specific hashing
1773
1774 virtual const TypeAryKlassPtr* cast_to_ptr_type(PTR ptr) const;
1775
1776 virtual const TypeKlassPtr *cast_to_exactness(bool klass_is_exact) const;
1777
1778 // corresponding pointer to instance, for a given class
1779 virtual const TypeOopPtr* as_instance_type(bool klass_change = true) const;
1780
1781 virtual const TypePtr *add_offset( intptr_t offset ) const;
1782 virtual const Type *xmeet( const Type *t ) const;
1783 virtual const Type *xdual() const; // Compute dual right now.
1784
1785 virtual const TypeAryKlassPtr* with_offset(intptr_t offset) const;
1786
1787 virtual bool empty(void) const {
1788 return TypeKlassPtr::empty() || _elem->empty();
1789 }
1790
1791 #ifndef PRODUCT
1792 virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
1793 #endif
1794 private:
1795 virtual bool is_meet_subtype_of_helper(const TypeKlassPtr* other, bool this_xk, bool other_xk) const;
1796 };
1797
1798 class TypeNarrowPtr : public Type {
1799 protected:
1800 const TypePtr* _ptrtype; // Could be TypePtr::NULL_PTR
1801
1802 TypeNarrowPtr(TYPES t, const TypePtr* ptrtype): Type(t),
1803 _ptrtype(ptrtype) {
1804 assert(ptrtype->offset() == 0 ||
1805 ptrtype->offset() == OffsetBot ||
1806 ptrtype->offset() == OffsetTop, "no real offsets");
1807 }
1808
1809 virtual const TypeNarrowPtr *isa_same_narrowptr(const Type *t) const = 0;
1810 virtual const TypeNarrowPtr *is_same_narrowptr(const Type *t) const = 0;
1811 virtual const TypeNarrowPtr *make_same_narrowptr(const TypePtr *t) const = 0;
1812 virtual const TypeNarrowPtr *make_hash_same_narrowptr(const TypePtr *t) const = 0;
1813 // Do not allow interface-vs.-noninterface joins to collapse to top.
1814 virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
1815 public:
1816 virtual bool eq( const Type *t ) const;
1817 virtual uint hash() const; // Type specific hashing
1818 virtual bool singleton(void) const; // TRUE if type is a singleton
1819
1820 virtual const Type *xmeet( const Type *t ) const;
1821 virtual const Type *xdual() const; // Compute dual right now.
1822
1823 virtual intptr_t get_con() const;
1824
1825 virtual bool empty(void) const; // TRUE if type is vacuous
1826
1827 // returns the equivalent ptr type for this compressed pointer
1828 const TypePtr *get_ptrtype() const {
1829 return _ptrtype;
1830 }
1831
1832 bool is_known_instance() const {
1833 return _ptrtype->is_known_instance();
1834 }
1835
1836 #ifndef PRODUCT
1837 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
1838 #endif
1839 };
1840
1841 //------------------------------TypeNarrowOop----------------------------------
1842 // A compressed reference to some kind of Oop. This type wraps around
1843 // a preexisting TypeOopPtr and forwards most of it's operations to
1844 // the underlying type. It's only real purpose is to track the
1845 // oopness of the compressed oop value when we expose the conversion
1846 // between the normal and the compressed form.
1847 class TypeNarrowOop : public TypeNarrowPtr {
1848 protected:
1849 TypeNarrowOop( const TypePtr* ptrtype): TypeNarrowPtr(NarrowOop, ptrtype) {
1850 }
1851
1852 virtual const TypeNarrowPtr *isa_same_narrowptr(const Type *t) const {
1853 return t->isa_narrowoop();
1854 }
1855
1856 virtual const TypeNarrowPtr *is_same_narrowptr(const Type *t) const {
1857 return t->is_narrowoop();
1858 }
1859
1860 virtual const TypeNarrowPtr *make_same_narrowptr(const TypePtr *t) const {
1861 return new TypeNarrowOop(t);
1862 }
1863
1864 virtual const TypeNarrowPtr *make_hash_same_narrowptr(const TypePtr *t) const {
1865 return (const TypeNarrowPtr*)((new TypeNarrowOop(t))->hashcons());
1866 }
1867
1868 public:
1869
1870 static const TypeNarrowOop *make( const TypePtr* type);
1871
1872 static const TypeNarrowOop* make_from_constant(ciObject* con, bool require_constant = false) {
1873 return make(TypeOopPtr::make_from_constant(con, require_constant));
1874 }
1875
1876 static const TypeNarrowOop *BOTTOM;
1877 static const TypeNarrowOop *NULL_PTR;
1878
1879 virtual const TypeNarrowOop* remove_speculative() const;
1880 virtual const Type* cleanup_speculative() const;
1881
1882 #ifndef PRODUCT
1883 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
1884 #endif
1885 };
1886
1887 //------------------------------TypeNarrowKlass----------------------------------
1888 // A compressed reference to klass pointer. This type wraps around a
1889 // preexisting TypeKlassPtr and forwards most of it's operations to
1890 // the underlying type.
1891 class TypeNarrowKlass : public TypeNarrowPtr {
1892 protected:
1893 TypeNarrowKlass( const TypePtr* ptrtype): TypeNarrowPtr(NarrowKlass, ptrtype) {
1894 }
1895
1896 virtual const TypeNarrowPtr *isa_same_narrowptr(const Type *t) const {
1897 return t->isa_narrowklass();
1898 }
1899
1900 virtual const TypeNarrowPtr *is_same_narrowptr(const Type *t) const {
1901 return t->is_narrowklass();
1902 }
1903
1904 virtual const TypeNarrowPtr *make_same_narrowptr(const TypePtr *t) const {
1905 return new TypeNarrowKlass(t);
1906 }
1907
1908 virtual const TypeNarrowPtr *make_hash_same_narrowptr(const TypePtr *t) const {
1909 return (const TypeNarrowPtr*)((new TypeNarrowKlass(t))->hashcons());
1910 }
1911
1912 public:
1913 static const TypeNarrowKlass *make( const TypePtr* type);
1914
1915 // static const TypeNarrowKlass *BOTTOM;
1916 static const TypeNarrowKlass *NULL_PTR;
1917
1918 #ifndef PRODUCT
1919 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
1920 #endif
1921 };
1922
1923 //------------------------------TypeFunc---------------------------------------
1924 // Class of Array Types
1925 class TypeFunc : public Type {
1926 TypeFunc( const TypeTuple *domain, const TypeTuple *range ) : Type(Function), _domain(domain), _range(range) {}
1927 virtual bool eq( const Type *t ) const;
1928 virtual uint hash() const; // Type specific hashing
1929 virtual bool singleton(void) const; // TRUE if type is a singleton
1930 virtual bool empty(void) const; // TRUE if type is vacuous
1931
1932 const TypeTuple* const _domain; // Domain of inputs
1933 const TypeTuple* const _range; // Range of results
1934
1935 public:
1936 // Constants are shared among ADLC and VM
1937 enum { Control = AdlcVMDeps::Control,
1938 I_O = AdlcVMDeps::I_O,
1939 Memory = AdlcVMDeps::Memory,
1940 FramePtr = AdlcVMDeps::FramePtr,
1941 ReturnAdr = AdlcVMDeps::ReturnAdr,
1942 Parms = AdlcVMDeps::Parms
1943 };
1944
1945
1946 // Accessors:
1947 const TypeTuple* domain() const { return _domain; }
1948 const TypeTuple* range() const { return _range; }
1949
1950 static const TypeFunc *make(ciMethod* method);
1951 static const TypeFunc *make(ciSignature signature, const Type* extra);
1952 static const TypeFunc *make(const TypeTuple* domain, const TypeTuple* range);
1953
1954 virtual const Type *xmeet( const Type *t ) const;
1955 virtual const Type *xdual() const; // Compute dual right now.
1956
1957 BasicType return_type() const;
1958
1959 #ifndef PRODUCT
1960 virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
1961 #endif
1962 // Convenience common pre-built types.
1963 };
1964
1965 //------------------------------accessors--------------------------------------
1966 inline bool Type::is_ptr_to_narrowoop() const {
1967 #ifdef _LP64
1968 return (isa_oopptr() != nullptr && is_oopptr()->is_ptr_to_narrowoop_nv());
1969 #else
1970 return false;
1971 #endif
1972 }
1973
1974 inline bool Type::is_ptr_to_narrowklass() const {
1975 #ifdef _LP64
1976 return (isa_oopptr() != nullptr && is_oopptr()->is_ptr_to_narrowklass_nv());
1977 #else
1978 return false;
1979 #endif
1980 }
1981
1982 inline float Type::getf() const {
1983 assert( _base == FloatCon, "Not a FloatCon" );
1984 return ((TypeF*)this)->_f;
1985 }
1986
1987 inline short Type::geth() const {
1988 assert(_base == HalfFloatCon, "Not a HalfFloatCon");
1989 return ((TypeH*)this)->_f;
1990 }
1991
1992 inline double Type::getd() const {
1993 assert( _base == DoubleCon, "Not a DoubleCon" );
1994 return ((TypeD*)this)->_d;
1995 }
1996
1997 inline const TypeInteger *Type::is_integer(BasicType bt) const {
1998 assert((bt == T_INT && _base == Int) || (bt == T_LONG && _base == Long), "Not an Int");
1999 return (TypeInteger*)this;
2000 }
2001
2002 inline const TypeInteger *Type::isa_integer(BasicType bt) const {
2003 return (((bt == T_INT && _base == Int) || (bt == T_LONG && _base == Long)) ? (TypeInteger*)this : nullptr);
2004 }
2005
2006 inline const TypeInt *Type::is_int() const {
2007 assert( _base == Int, "Not an Int" );
2008 return (TypeInt*)this;
2009 }
2010
2011 inline const TypeInt *Type::isa_int() const {
2012 return ( _base == Int ? (TypeInt*)this : nullptr);
2013 }
2014
2015 inline const TypeLong *Type::is_long() const {
2016 assert( _base == Long, "Not a Long" );
2017 return (TypeLong*)this;
2018 }
2019
2020 inline const TypeLong *Type::isa_long() const {
2021 return ( _base == Long ? (TypeLong*)this : nullptr);
2022 }
2023
2024 inline const TypeH* Type::isa_half_float() const {
2025 return ((_base == HalfFloatTop ||
2026 _base == HalfFloatCon ||
2027 _base == HalfFloatBot) ? (TypeH*)this : nullptr);
2028 }
2029
2030 inline const TypeH* Type::is_half_float_constant() const {
2031 assert( _base == HalfFloatCon, "Not a HalfFloat" );
2032 return (TypeH*)this;
2033 }
2034
2035 inline const TypeH* Type::isa_half_float_constant() const {
2036 return (_base == HalfFloatCon ? (TypeH*)this : nullptr);
2037 }
2038
2039 inline const TypeF *Type::isa_float() const {
2040 return ((_base == FloatTop ||
2041 _base == FloatCon ||
2042 _base == FloatBot) ? (TypeF*)this : nullptr);
2043 }
2044
2045 inline const TypeF *Type::is_float_constant() const {
2046 assert( _base == FloatCon, "Not a Float" );
2047 return (TypeF*)this;
2048 }
2049
2050 inline const TypeF *Type::isa_float_constant() const {
2051 return ( _base == FloatCon ? (TypeF*)this : nullptr);
2052 }
2053
2054 inline const TypeD *Type::isa_double() const {
2055 return ((_base == DoubleTop ||
2056 _base == DoubleCon ||
2057 _base == DoubleBot) ? (TypeD*)this : nullptr);
2058 }
2059
2060 inline const TypeD *Type::is_double_constant() const {
2061 assert( _base == DoubleCon, "Not a Double" );
2062 return (TypeD*)this;
2063 }
2064
2065 inline const TypeD *Type::isa_double_constant() const {
2066 return ( _base == DoubleCon ? (TypeD*)this : nullptr);
2067 }
2068
2069 inline const TypeTuple *Type::is_tuple() const {
2070 assert( _base == Tuple, "Not a Tuple" );
2071 return (TypeTuple*)this;
2072 }
2073
2074 inline const TypeAry *Type::is_ary() const {
2075 assert( _base == Array , "Not an Array" );
2076 return (TypeAry*)this;
2077 }
2078
2079 inline const TypeAry *Type::isa_ary() const {
2080 return ((_base == Array) ? (TypeAry*)this : nullptr);
2081 }
2082
2083 inline const TypeVectMask *Type::is_vectmask() const {
2084 assert( _base == VectorMask, "Not a Vector Mask" );
2085 return (TypeVectMask*)this;
2086 }
2087
2088 inline const TypeVectMask *Type::isa_vectmask() const {
2089 return (_base == VectorMask) ? (TypeVectMask*)this : nullptr;
2090 }
2091
2092 inline const TypeVect *Type::is_vect() const {
2093 assert( _base >= VectorMask && _base <= VectorZ, "Not a Vector" );
2094 return (TypeVect*)this;
2095 }
2096
2097 inline const TypeVect *Type::isa_vect() const {
2098 return (_base >= VectorMask && _base <= VectorZ) ? (TypeVect*)this : nullptr;
2099 }
2100
2101 inline const TypePtr *Type::is_ptr() const {
2102 // AnyPtr is the first Ptr and KlassPtr the last, with no non-ptrs between.
2103 assert(_base >= AnyPtr && _base <= AryKlassPtr, "Not a pointer");
2104 return (TypePtr*)this;
2105 }
2106
2107 inline const TypePtr *Type::isa_ptr() const {
2108 // AnyPtr is the first Ptr and KlassPtr the last, with no non-ptrs between.
2109 return (_base >= AnyPtr && _base <= AryKlassPtr) ? (TypePtr*)this : nullptr;
2110 }
2111
2112 inline const TypeOopPtr *Type::is_oopptr() const {
2113 // OopPtr is the first and KlassPtr the last, with no non-oops between.
2114 assert(_base >= OopPtr && _base <= AryPtr, "Not a Java pointer" ) ;
2115 return (TypeOopPtr*)this;
2116 }
2117
2118 inline const TypeOopPtr *Type::isa_oopptr() const {
2119 // OopPtr is the first and KlassPtr the last, with no non-oops between.
2120 return (_base >= OopPtr && _base <= AryPtr) ? (TypeOopPtr*)this : nullptr;
2121 }
2122
2123 inline const TypeRawPtr *Type::isa_rawptr() const {
2124 return (_base == RawPtr) ? (TypeRawPtr*)this : nullptr;
2125 }
2126
2127 inline const TypeRawPtr *Type::is_rawptr() const {
2128 assert( _base == RawPtr, "Not a raw pointer" );
2129 return (TypeRawPtr*)this;
2130 }
2131
2132 inline const TypeInstPtr *Type::isa_instptr() const {
2133 return (_base == InstPtr) ? (TypeInstPtr*)this : nullptr;
2134 }
2135
2136 inline const TypeInstPtr *Type::is_instptr() const {
2137 assert( _base == InstPtr, "Not an object pointer" );
2138 return (TypeInstPtr*)this;
2139 }
2140
2141 inline const TypeAryPtr *Type::isa_aryptr() const {
2142 return (_base == AryPtr) ? (TypeAryPtr*)this : nullptr;
2143 }
2144
2145 inline const TypeAryPtr *Type::is_aryptr() const {
2146 assert( _base == AryPtr, "Not an array pointer" );
2147 return (TypeAryPtr*)this;
2148 }
2149
2150 inline const TypeNarrowOop *Type::is_narrowoop() const {
2151 // OopPtr is the first and KlassPtr the last, with no non-oops between.
2152 assert(_base == NarrowOop, "Not a narrow oop" ) ;
2153 return (TypeNarrowOop*)this;
2154 }
2155
2156 inline const TypeNarrowOop *Type::isa_narrowoop() const {
2157 // OopPtr is the first and KlassPtr the last, with no non-oops between.
2158 return (_base == NarrowOop) ? (TypeNarrowOop*)this : nullptr;
2159 }
2160
2161 inline const TypeNarrowKlass *Type::is_narrowklass() const {
2162 assert(_base == NarrowKlass, "Not a narrow oop" ) ;
2163 return (TypeNarrowKlass*)this;
2164 }
2165
2166 inline const TypeNarrowKlass *Type::isa_narrowklass() const {
2167 return (_base == NarrowKlass) ? (TypeNarrowKlass*)this : nullptr;
2168 }
2169
2170 inline const TypeMetadataPtr *Type::is_metadataptr() const {
2171 // MetadataPtr is the first and CPCachePtr the last
2172 assert(_base == MetadataPtr, "Not a metadata pointer" ) ;
2173 return (TypeMetadataPtr*)this;
2174 }
2175
2176 inline const TypeMetadataPtr *Type::isa_metadataptr() const {
2177 return (_base == MetadataPtr) ? (TypeMetadataPtr*)this : nullptr;
2178 }
2179
2180 inline const TypeKlassPtr *Type::isa_klassptr() const {
2181 return (_base >= KlassPtr && _base <= AryKlassPtr ) ? (TypeKlassPtr*)this : nullptr;
2182 }
2183
2184 inline const TypeKlassPtr *Type::is_klassptr() const {
2185 assert(_base >= KlassPtr && _base <= AryKlassPtr, "Not a klass pointer");
2186 return (TypeKlassPtr*)this;
2187 }
2188
2189 inline const TypeInstKlassPtr *Type::isa_instklassptr() const {
2190 return (_base == InstKlassPtr) ? (TypeInstKlassPtr*)this : nullptr;
2191 }
2192
2193 inline const TypeInstKlassPtr *Type::is_instklassptr() const {
2194 assert(_base == InstKlassPtr, "Not a klass pointer");
2195 return (TypeInstKlassPtr*)this;
2196 }
2197
2198 inline const TypeAryKlassPtr *Type::isa_aryklassptr() const {
2199 return (_base == AryKlassPtr) ? (TypeAryKlassPtr*)this : nullptr;
2200 }
2201
2202 inline const TypeAryKlassPtr *Type::is_aryklassptr() const {
2203 assert(_base == AryKlassPtr, "Not a klass pointer");
2204 return (TypeAryKlassPtr*)this;
2205 }
2206
2207 inline const TypePtr* Type::make_ptr() const {
2208 return (_base == NarrowOop) ? is_narrowoop()->get_ptrtype() :
2209 ((_base == NarrowKlass) ? is_narrowklass()->get_ptrtype() :
2210 isa_ptr());
2211 }
2212
2213 inline const TypeOopPtr* Type::make_oopptr() const {
2214 return (_base == NarrowOop) ? is_narrowoop()->get_ptrtype()->isa_oopptr() : isa_oopptr();
2215 }
2216
2217 inline const TypeNarrowOop* Type::make_narrowoop() const {
2218 return (_base == NarrowOop) ? is_narrowoop() :
2219 (isa_ptr() ? TypeNarrowOop::make(is_ptr()) : nullptr);
2220 }
2221
2222 inline const TypeNarrowKlass* Type::make_narrowklass() const {
2223 return (_base == NarrowKlass) ? is_narrowklass() :
2224 (isa_ptr() ? TypeNarrowKlass::make(is_ptr()) : nullptr);
2225 }
2226
2227 inline bool Type::is_floatingpoint() const {
2228 if( (_base == HalfFloatCon) || (_base == HalfFloatBot) ||
2229 (_base == FloatCon) || (_base == FloatBot) ||
2230 (_base == DoubleCon) || (_base == DoubleBot) )
2231 return true;
2232 return false;
2233 }
2234
2235 template <>
2236 inline const TypeInt* Type::cast<TypeInt>() const {
2237 return is_int();
2238 }
2239
2240 template <>
2241 inline const TypeLong* Type::cast<TypeLong>() const {
2242 return is_long();
2243 }
2244
2245 // ===============================================================
2246 // Things that need to be 64-bits in the 64-bit build but
2247 // 32-bits in the 32-bit build. Done this way to get full
2248 // optimization AND strong typing.
2249 #ifdef _LP64
2250
2251 // For type queries and asserts
2252 #define is_intptr_t is_long
2253 #define isa_intptr_t isa_long
2254 #define find_intptr_t_type find_long_type
2255 #define find_intptr_t_con find_long_con
2256 #define TypeX TypeLong
2257 #define Type_X Type::Long
2258 #define TypeX_X TypeLong::LONG
2259 #define TypeX_ZERO TypeLong::ZERO
2260 // For 'ideal_reg' machine registers
2261 #define Op_RegX Op_RegL
2262 // For phase->intcon variants
2263 #define MakeConX longcon
2264 #define ConXNode ConLNode
2265 // For array index arithmetic
2266 #define MulXNode MulLNode
2267 #define AndXNode AndLNode
2268 #define OrXNode OrLNode
2269 #define CmpXNode CmpLNode
2270 #define SubXNode SubLNode
2271 #define LShiftXNode LShiftLNode
2272 // For object size computation:
2273 #define AddXNode AddLNode
2274 #define RShiftXNode RShiftLNode
2275 // For card marks and hashcodes
2276 #define URShiftXNode URShiftLNode
2277 // For shenandoahSupport
2278 #define LoadXNode LoadLNode
2279 #define StoreXNode StoreLNode
2280 // Opcodes
2281 #define Op_LShiftX Op_LShiftL
2282 #define Op_AndX Op_AndL
2283 #define Op_AddX Op_AddL
2284 #define Op_SubX Op_SubL
2285 #define Op_XorX Op_XorL
2286 #define Op_URShiftX Op_URShiftL
2287 #define Op_LoadX Op_LoadL
2288 // conversions
2289 #define ConvI2X(x) ConvI2L(x)
2290 #define ConvL2X(x) (x)
2291 #define ConvX2I(x) ConvL2I(x)
2292 #define ConvX2L(x) (x)
2293 #define ConvX2UL(x) (x)
2294
2295 #else
2296
2297 // For type queries and asserts
2298 #define is_intptr_t is_int
2299 #define isa_intptr_t isa_int
2300 #define find_intptr_t_type find_int_type
2301 #define find_intptr_t_con find_int_con
2302 #define TypeX TypeInt
2303 #define Type_X Type::Int
2304 #define TypeX_X TypeInt::INT
2305 #define TypeX_ZERO TypeInt::ZERO
2306 // For 'ideal_reg' machine registers
2307 #define Op_RegX Op_RegI
2308 // For phase->intcon variants
2309 #define MakeConX intcon
2310 #define ConXNode ConINode
2311 // For array index arithmetic
2312 #define MulXNode MulINode
2313 #define AndXNode AndINode
2314 #define OrXNode OrINode
2315 #define CmpXNode CmpINode
2316 #define SubXNode SubINode
2317 #define LShiftXNode LShiftINode
2318 // For object size computation:
2319 #define AddXNode AddINode
2320 #define RShiftXNode RShiftINode
2321 // For card marks and hashcodes
2322 #define URShiftXNode URShiftINode
2323 // For shenandoahSupport
2324 #define LoadXNode LoadINode
2325 #define StoreXNode StoreINode
2326 // Opcodes
2327 #define Op_LShiftX Op_LShiftI
2328 #define Op_AndX Op_AndI
2329 #define Op_AddX Op_AddI
2330 #define Op_SubX Op_SubI
2331 #define Op_XorX Op_XorI
2332 #define Op_URShiftX Op_URShiftI
2333 #define Op_LoadX Op_LoadI
2334 // conversions
2335 #define ConvI2X(x) (x)
2336 #define ConvL2X(x) ConvL2I(x)
2337 #define ConvX2I(x) (x)
2338 #define ConvX2L(x) ConvI2L(x)
2339 #define ConvX2UL(x) ConvI2UL(x)
2340
2341 #endif
2342
2343 #endif // SHARE_OPTO_TYPE_HPP