1 /*
2 * Copyright (c) 1997, 2012, 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.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_VM_OPTO_TYPE_HPP
26 #define SHARE_VM_OPTO_TYPE_HPP
27
28 #include "libadt/port.hpp"
29 #include "opto/adlcVMDeps.hpp"
30 #include "runtime/handles.hpp"
31
32 // Portions of code courtesy of Clifford Click
33
34 // Optimization - Graph Style
35
36
37 // This class defines a Type lattice. The lattice is used in the constant
38 // propagation algorithms, and for some type-checking of the iloc code.
39 // Basic types include RSD's (lower bound, upper bound, stride for integers),
40 // float & double precision constants, sets of data-labels and code-labels.
41 // The complete lattice is described below. Subtypes have no relationship to
42 // up or down in the lattice; that is entirely determined by the behavior of
43 // the MEET/JOIN functions.
44
45 class Dict;
46 class Type;
47 class TypeD;
48 class TypeF;
49 class TypeInt;
50 class TypeLong;
51 class TypeNarrowPtr;
52 class TypeNarrowOop;
53 class TypeNarrowKlass;
54 class TypeAry;
55 class TypeTuple;
56 class TypeVect;
57 class TypeVectS;
58 class TypeVectD;
59 class TypeVectX;
60 class TypeVectY;
61 class TypePtr;
62 class TypeRawPtr;
63 class TypeOopPtr;
64 class TypeInstPtr;
65 class TypeAryPtr;
66 class TypeKlassPtr;
67 class TypeMetadataPtr;
68
69 //------------------------------Type-------------------------------------------
70 // Basic Type object, represents a set of primitive Values.
71 // Types are hash-cons'd into a private class dictionary, so only one of each
72 // different kind of Type exists. Types are never modified after creation, so
73 // all their interesting fields are constant.
74 class Type {
75 friend class VMStructs;
76
77 public:
78 enum TYPES {
79 Bad=0, // Type check
80 Control, // Control of code (not in lattice)
81 Top, // Top of the lattice
82 Int, // Integer range (lo-hi)
83 Long, // Long integer range (lo-hi)
84 Half, // Placeholder half of doubleword
85 NarrowOop, // Compressed oop pointer
86 NarrowKlass, // Compressed klass pointer
87
88 Tuple, // Method signature or object layout
89 Array, // Array types
90 VectorS, // 32bit Vector types
91 VectorD, // 64bit Vector types
92 VectorX, // 128bit Vector types
93 VectorY, // 256bit Vector types
94
95 AnyPtr, // Any old raw, klass, inst, or array pointer
96 RawPtr, // Raw (non-oop) pointers
97 OopPtr, // Any and all Java heap entities
98 InstPtr, // Instance pointers (non-array objects)
99 AryPtr, // Array pointers
100 // (Ptr order matters: See is_ptr, isa_ptr, is_oopptr, isa_oopptr.)
101
102 MetadataPtr, // Generic metadata
103 KlassPtr, // Klass pointers
104
105 Function, // Function signature
106 Abio, // Abstract I/O
107 Return_Address, // Subroutine return address
108 Memory, // Abstract store
109 FloatTop, // No float value
110 FloatCon, // Floating point constant
111 FloatBot, // Any float value
112 DoubleTop, // No double value
113 DoubleCon, // Double precision constant
114 DoubleBot, // Any double value
115 Bottom, // Bottom of lattice
116 lastype // Bogus ending type (not in lattice)
117 };
118
119 // Signal values for offsets from a base pointer
120 enum OFFSET_SIGNALS {
121 OffsetTop = -2000000000, // undefined offset
122 OffsetBot = -2000000001 // any possible offset
123 };
124
125 // Min and max WIDEN values.
126 enum WIDEN {
127 WidenMin = 0,
128 WidenMax = 3
129 };
130
131 private:
132 typedef struct {
133 const TYPES dual_type;
134 const BasicType basic_type;
135 const char* msg;
136 const bool isa_oop;
137 const int ideal_reg;
138 const relocInfo::relocType reloc;
139 } TypeInfo;
140
141 // Dictionary of types shared among compilations.
142 static Dict* _shared_type_dict;
143 static TypeInfo _type_info[];
144
145 static int uhash( const Type *const t );
146 // Structural equality check. Assumes that cmp() has already compared
147 // the _base types and thus knows it can cast 't' appropriately.
148 virtual bool eq( const Type *t ) const;
149
150 // Top-level hash-table of types
151 static Dict *type_dict() {
152 return Compile::current()->type_dict();
153 }
154
155 // DUAL operation: reflect around lattice centerline. Used instead of
156 // join to ensure my lattice is symmetric up and down. Dual is computed
157 // lazily, on demand, and cached in _dual.
158 const Type *_dual; // Cached dual value
159 // Table for efficient dualing of base types
160 static const TYPES dual_type[lastype];
161
162 protected:
163 // Each class of type is also identified by its base.
164 const TYPES _base; // Enum of Types type
165
166 Type( TYPES t ) : _dual(NULL), _base(t) {} // Simple types
167 // ~Type(); // Use fast deallocation
168 const Type *hashcons(); // Hash-cons the type
169
170 public:
171
172 inline void* operator new( size_t x ) {
173 Compile* compile = Compile::current();
174 compile->set_type_last_size(x);
175 void *temp = compile->type_arena()->Amalloc_D(x);
176 compile->set_type_hwm(temp);
177 return temp;
178 }
179 inline void operator delete( void* ptr ) {
180 Compile* compile = Compile::current();
181 compile->type_arena()->Afree(ptr,compile->type_last_size());
182 }
183
184 // Initialize the type system for a particular compilation.
185 static void Initialize(Compile* compile);
186
187 // Initialize the types shared by all compilations.
188 static void Initialize_shared(Compile* compile);
189
190 TYPES base() const {
191 assert(_base > Bad && _base < lastype, "sanity");
192 return _base;
193 }
194
195 // Create a new hash-consd type
196 static const Type *make(enum TYPES);
197 // Test for equivalence of types
198 static int cmp( const Type *const t1, const Type *const t2 );
199 // Test for higher or equal in lattice
200 int higher_equal( const Type *t ) const { return !cmp(meet(t),t); }
201
202 // MEET operation; lower in lattice.
203 const Type *meet( const Type *t ) const;
204 // WIDEN: 'widens' for Ints and other range types
205 virtual const Type *widen( const Type *old, const Type* limit ) const { return this; }
206 // NARROW: complement for widen, used by pessimistic phases
207 virtual const Type *narrow( const Type *old ) const { return this; }
208
209 // DUAL operation: reflect around lattice centerline. Used instead of
210 // join to ensure my lattice is symmetric up and down.
211 const Type *dual() const { return _dual; }
212
213 // Compute meet dependent on base type
214 virtual const Type *xmeet( const Type *t ) const;
215 virtual const Type *xdual() const; // Compute dual right now.
216
217 // JOIN operation; higher in lattice. Done by finding the dual of the
218 // meet of the dual of the 2 inputs.
219 const Type *join( const Type *t ) const {
220 return dual()->meet(t->dual())->dual(); }
221
222 // Modified version of JOIN adapted to the needs Node::Value.
223 // Normalizes all empty values to TOP. Does not kill _widen bits.
224 // Currently, it also works around limitations involving interface types.
225 virtual const Type *filter( const Type *kills ) const;
226
227 #ifdef ASSERT
228 // One type is interface, the other is oop
229 virtual bool interface_vs_oop(const Type *t) const;
230 #endif
231
232 // Returns true if this pointer points at memory which contains a
233 // compressed oop references.
234 bool is_ptr_to_narrowoop() const;
235 bool is_ptr_to_narrowklass() const;
236
237 // Convenience access
238 float getf() const;
239 double getd() const;
240
241 const TypeInt *is_int() const;
242 const TypeInt *isa_int() const; // Returns NULL if not an Int
243 const TypeLong *is_long() const;
244 const TypeLong *isa_long() const; // Returns NULL if not a Long
245 const TypeD *isa_double() const; // Returns NULL if not a Double{Top,Con,Bot}
246 const TypeD *is_double_constant() const; // Asserts it is a DoubleCon
247 const TypeD *isa_double_constant() const; // Returns NULL if not a DoubleCon
248 const TypeF *isa_float() const; // Returns NULL if not a Float{Top,Con,Bot}
249 const TypeF *is_float_constant() const; // Asserts it is a FloatCon
250 const TypeF *isa_float_constant() const; // Returns NULL if not a FloatCon
251 const TypeTuple *is_tuple() const; // Collection of fields, NOT a pointer
252 const TypeAry *is_ary() const; // Array, NOT array pointer
253 const TypeVect *is_vect() const; // Vector
254 const TypeVect *isa_vect() const; // Returns NULL if not a Vector
255 const TypePtr *is_ptr() const; // Asserts it is a ptr type
256 const TypePtr *isa_ptr() const; // Returns NULL if not ptr type
257 const TypeRawPtr *isa_rawptr() const; // NOT Java oop
258 const TypeRawPtr *is_rawptr() const; // Asserts is rawptr
259 const TypeNarrowOop *is_narrowoop() const; // Java-style GC'd pointer
260 const TypeNarrowOop *isa_narrowoop() const; // Returns NULL if not oop ptr type
261 const TypeNarrowKlass *is_narrowklass() const; // compressed klass pointer
262 const TypeNarrowKlass *isa_narrowklass() const;// Returns NULL if not oop ptr type
263 const TypeOopPtr *isa_oopptr() const; // Returns NULL if not oop ptr type
264 const TypeOopPtr *is_oopptr() const; // Java-style GC'd pointer
265 const TypeInstPtr *isa_instptr() const; // Returns NULL if not InstPtr
266 const TypeInstPtr *is_instptr() const; // Instance
267 const TypeAryPtr *isa_aryptr() const; // Returns NULL if not AryPtr
268 const TypeAryPtr *is_aryptr() const; // Array oop
269
270 const TypeMetadataPtr *isa_metadataptr() const; // Returns NULL if not oop ptr type
271 const TypeMetadataPtr *is_metadataptr() const; // Java-style GC'd pointer
272 const TypeKlassPtr *isa_klassptr() const; // Returns NULL if not KlassPtr
273 const TypeKlassPtr *is_klassptr() const; // assert if not KlassPtr
274
275 virtual bool is_finite() const; // Has a finite value
276 virtual bool is_nan() const; // Is not a number (NaN)
277
278 // Returns this ptr type or the equivalent ptr type for this compressed pointer.
279 const TypePtr* make_ptr() const;
280
281 // Returns this oopptr type or the equivalent oopptr type for this compressed pointer.
282 // Asserts if the underlying type is not an oopptr or narrowoop.
283 const TypeOopPtr* make_oopptr() const;
284
285 // Returns this compressed pointer or the equivalent compressed version
286 // of this pointer type.
287 const TypeNarrowOop* make_narrowoop() const;
288
289 // Returns this compressed klass pointer or the equivalent
290 // compressed version of this pointer type.
291 const TypeNarrowKlass* make_narrowklass() const;
292
293 // Special test for register pressure heuristic
294 bool is_floatingpoint() const; // True if Float or Double base type
295
296 // Do you have memory, directly or through a tuple?
297 bool has_memory( ) const;
298
299 // TRUE if type is a singleton
300 virtual bool singleton(void) const;
301
302 // TRUE if type is above the lattice centerline, and is therefore vacuous
303 virtual bool empty(void) const;
304
305 // Return a hash for this type. The hash function is public so ConNode
306 // (constants) can hash on their constant, which is represented by a Type.
307 virtual int hash() const;
308
309 // Map ideal registers (machine types) to ideal types
310 static const Type *mreg2type[];
311
312 // Printing, statistics
313 #ifndef PRODUCT
314 void dump_on(outputStream *st) const;
315 void dump() const {
316 dump_on(tty);
317 }
318 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
319 static void dump_stats();
320 #endif
321 void typerr(const Type *t) const; // Mixing types error
322
323 // Create basic type
324 static const Type* get_const_basic_type(BasicType type) {
325 assert((uint)type <= T_CONFLICT && _const_basic_type[type] != NULL, "bad type");
326 return _const_basic_type[type];
327 }
328
329 // Mapping to the array element's basic type.
330 BasicType array_element_basic_type() const;
331
332 // Create standard type for a ciType:
333 static const Type* get_const_type(ciType* type);
334
335 // Create standard zero value:
336 static const Type* get_zero_type(BasicType type) {
337 assert((uint)type <= T_CONFLICT && _zero_type[type] != NULL, "bad type");
338 return _zero_type[type];
339 }
340
341 // Report if this is a zero value (not top).
342 bool is_zero_type() const {
343 BasicType type = basic_type();
344 if (type == T_VOID || type >= T_CONFLICT)
345 return false;
346 else
347 return (this == _zero_type[type]);
348 }
349
350 // Convenience common pre-built types.
351 static const Type *ABIO;
352 static const Type *BOTTOM;
353 static const Type *CONTROL;
354 static const Type *DOUBLE;
355 static const Type *FLOAT;
356 static const Type *HALF;
357 static const Type *MEMORY;
358 static const Type *MULTI;
359 static const Type *RETURN_ADDRESS;
360 static const Type *TOP;
361
362 // Mapping from compiler type to VM BasicType
363 BasicType basic_type() const { return _type_info[_base].basic_type; }
364 int ideal_reg() const { return _type_info[_base].ideal_reg; }
365 const char* msg() const { return _type_info[_base].msg; }
366 bool isa_oop_ptr() const { return _type_info[_base].isa_oop; }
367 relocInfo::relocType reloc() const { return _type_info[_base].reloc; }
368
369 // Mapping from CI type system to compiler type:
370 static const Type* get_typeflow_type(ciType* type);
371
372 private:
373 // support arrays
374 static const BasicType _basic_type[];
375 static const Type* _zero_type[T_CONFLICT+1];
376 static const Type* _const_basic_type[T_CONFLICT+1];
377 };
378
379 //------------------------------TypeF------------------------------------------
380 // Class of Float-Constant Types.
381 class TypeF : public Type {
382 TypeF( float f ) : Type(FloatCon), _f(f) {};
383 public:
384 virtual bool eq( const Type *t ) const;
385 virtual int hash() const; // Type specific hashing
386 virtual bool singleton(void) const; // TRUE if type is a singleton
387 virtual bool empty(void) const; // TRUE if type is vacuous
388 public:
389 const float _f; // Float constant
390
391 static const TypeF *make(float f);
392
393 virtual bool is_finite() const; // Has a finite value
394 virtual bool is_nan() const; // Is not a number (NaN)
395
396 virtual const Type *xmeet( const Type *t ) const;
397 virtual const Type *xdual() const; // Compute dual right now.
398 // Convenience common pre-built types.
399 static const TypeF *ZERO; // positive zero only
400 static const TypeF *ONE;
401 #ifndef PRODUCT
402 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
403 #endif
404 };
405
406 //------------------------------TypeD------------------------------------------
407 // Class of Double-Constant Types.
408 class TypeD : public Type {
409 TypeD( double d ) : Type(DoubleCon), _d(d) {};
410 public:
411 virtual bool eq( const Type *t ) const;
412 virtual int hash() const; // Type specific hashing
413 virtual bool singleton(void) const; // TRUE if type is a singleton
414 virtual bool empty(void) const; // TRUE if type is vacuous
415 public:
416 const double _d; // Double constant
417
418 static const TypeD *make(double d);
419
420 virtual bool is_finite() const; // Has a finite value
421 virtual bool is_nan() const; // Is not a number (NaN)
422
423 virtual const Type *xmeet( const Type *t ) const;
424 virtual const Type *xdual() const; // Compute dual right now.
425 // Convenience common pre-built types.
426 static const TypeD *ZERO; // positive zero only
427 static const TypeD *ONE;
428 #ifndef PRODUCT
429 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
430 #endif
431 };
432
433 //------------------------------TypeInt----------------------------------------
434 // Class of integer ranges, the set of integers between a lower bound and an
435 // upper bound, inclusive.
436 class TypeInt : public Type {
437 TypeInt( jint lo, jint hi, int w );
438 public:
439 virtual bool eq( const Type *t ) const;
440 virtual int hash() const; // Type specific hashing
441 virtual bool singleton(void) const; // TRUE if type is a singleton
442 virtual bool empty(void) const; // TRUE if type is vacuous
443 public:
444 const jint _lo, _hi; // Lower bound, upper bound
445 const short _widen; // Limit on times we widen this sucker
446
447 static const TypeInt *make(jint lo);
448 // must always specify w
449 static const TypeInt *make(jint lo, jint hi, int w);
450
451 // Check for single integer
452 int is_con() const { return _lo==_hi; }
453 bool is_con(int i) const { return is_con() && _lo == i; }
454 jint get_con() const { assert( is_con(), "" ); return _lo; }
455
456 virtual bool is_finite() const; // Has a finite value
457
458 virtual const Type *xmeet( const Type *t ) const;
459 virtual const Type *xdual() const; // Compute dual right now.
460 virtual const Type *widen( const Type *t, const Type* limit_type ) const;
461 virtual const Type *narrow( const Type *t ) const;
462 // Do not kill _widen bits.
463 virtual const Type *filter( const Type *kills ) const;
464 // Convenience common pre-built types.
465 static const TypeInt *MINUS_1;
466 static const TypeInt *ZERO;
467 static const TypeInt *ONE;
468 static const TypeInt *BOOL;
469 static const TypeInt *CC;
470 static const TypeInt *CC_LT; // [-1] == MINUS_1
471 static const TypeInt *CC_GT; // [1] == ONE
472 static const TypeInt *CC_EQ; // [0] == ZERO
473 static const TypeInt *CC_LE; // [-1,0]
474 static const TypeInt *CC_GE; // [0,1] == BOOL (!)
475 static const TypeInt *BYTE;
476 static const TypeInt *UBYTE;
477 static const TypeInt *CHAR;
478 static const TypeInt *SHORT;
479 static const TypeInt *POS;
480 static const TypeInt *POS1;
481 static const TypeInt *INT;
482 static const TypeInt *SYMINT; // symmetric range [-max_jint..max_jint]
483 #ifndef PRODUCT
484 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
485 #endif
486 };
487
488
489 //------------------------------TypeLong---------------------------------------
490 // Class of long integer ranges, the set of integers between a lower bound and
491 // an upper bound, inclusive.
492 class TypeLong : public Type {
493 TypeLong( jlong lo, jlong hi, int w );
494 public:
495 virtual bool eq( const Type *t ) const;
496 virtual int hash() const; // Type specific hashing
497 virtual bool singleton(void) const; // TRUE if type is a singleton
498 virtual bool empty(void) const; // TRUE if type is vacuous
499 public:
500 const jlong _lo, _hi; // Lower bound, upper bound
501 const short _widen; // Limit on times we widen this sucker
502
503 static const TypeLong *make(jlong lo);
504 // must always specify w
505 static const TypeLong *make(jlong lo, jlong hi, int w);
506
507 // Check for single integer
508 int is_con() const { return _lo==_hi; }
509 bool is_con(int i) const { return is_con() && _lo == i; }
510 jlong get_con() const { assert( is_con(), "" ); return _lo; }
511
512 virtual bool is_finite() const; // Has a finite value
513
514 virtual const Type *xmeet( const Type *t ) const;
515 virtual const Type *xdual() const; // Compute dual right now.
516 virtual const Type *widen( const Type *t, const Type* limit_type ) const;
517 virtual const Type *narrow( const Type *t ) const;
518 // Do not kill _widen bits.
519 virtual const Type *filter( const Type *kills ) const;
520 // Convenience common pre-built types.
521 static const TypeLong *MINUS_1;
522 static const TypeLong *ZERO;
523 static const TypeLong *ONE;
524 static const TypeLong *POS;
525 static const TypeLong *LONG;
526 static const TypeLong *INT; // 32-bit subrange [min_jint..max_jint]
527 static const TypeLong *UINT; // 32-bit unsigned [0..max_juint]
528 #ifndef PRODUCT
529 virtual void dump2( Dict &d, uint, outputStream *st ) const;// Specialized per-Type dumping
530 #endif
531 };
532
533 //------------------------------TypeTuple--------------------------------------
534 // Class of Tuple Types, essentially type collections for function signatures
535 // and class layouts. It happens to also be a fast cache for the HotSpot
536 // signature types.
537 class TypeTuple : public Type {
538 TypeTuple( uint cnt, const Type **fields ) : Type(Tuple), _cnt(cnt), _fields(fields) { }
539 public:
540 virtual bool eq( const Type *t ) const;
541 virtual int hash() const; // Type specific hashing
542 virtual bool singleton(void) const; // TRUE if type is a singleton
543 virtual bool empty(void) const; // TRUE if type is vacuous
544
545 public:
546 const uint _cnt; // Count of fields
547 const Type ** const _fields; // Array of field types
548
549 // Accessors:
550 uint cnt() const { return _cnt; }
551 const Type* field_at(uint i) const {
552 assert(i < _cnt, "oob");
553 return _fields[i];
554 }
555 void set_field_at(uint i, const Type* t) {
556 assert(i < _cnt, "oob");
557 _fields[i] = t;
558 }
559
560 static const TypeTuple *make( uint cnt, const Type **fields );
561 static const TypeTuple *make_range(ciSignature *sig);
562 static const TypeTuple *make_domain(ciInstanceKlass* recv, ciSignature *sig);
563
564 // Subroutine call type with space allocated for argument types
565 static const Type **fields( uint arg_cnt );
566
567 virtual const Type *xmeet( const Type *t ) const;
568 virtual const Type *xdual() const; // Compute dual right now.
569 // Convenience common pre-built types.
570 static const TypeTuple *IFBOTH;
571 static const TypeTuple *IFFALSE;
572 static const TypeTuple *IFTRUE;
573 static const TypeTuple *IFNEITHER;
574 static const TypeTuple *LOOPBODY;
575 static const TypeTuple *MEMBAR;
576 static const TypeTuple *STORECONDITIONAL;
577 static const TypeTuple *START_I2C;
578 static const TypeTuple *INT_PAIR;
579 static const TypeTuple *LONG_PAIR;
580 #ifndef PRODUCT
581 virtual void dump2( Dict &d, uint, outputStream *st ) const; // Specialized per-Type dumping
582 #endif
583 };
584
585 //------------------------------TypeAry----------------------------------------
586 // Class of Array Types
587 class TypeAry : public Type {
588 TypeAry( const Type *elem, const TypeInt *size) : Type(Array),
589 _elem(elem), _size(size) {}
590 public:
591 virtual bool eq( const Type *t ) const;
592 virtual int hash() const; // Type specific hashing
593 virtual bool singleton(void) const; // TRUE if type is a singleton
594 virtual bool empty(void) const; // TRUE if type is vacuous
595
596 private:
597 const Type *_elem; // Element type of array
598 const TypeInt *_size; // Elements in array
599 friend class TypeAryPtr;
600
601 public:
602 static const TypeAry *make( const Type *elem, const TypeInt *size);
603
604 virtual const Type *xmeet( const Type *t ) const;
605 virtual const Type *xdual() const; // Compute dual right now.
606 bool ary_must_be_exact() const; // true if arrays of such are never generic
607 #ifdef ASSERT
608 // One type is interface, the other is oop
609 virtual bool interface_vs_oop(const Type *t) const;
610 #endif
611 #ifndef PRODUCT
612 virtual void dump2( Dict &d, uint, outputStream *st ) const; // Specialized per-Type dumping
613 #endif
614 };
615
616 //------------------------------TypeVect---------------------------------------
617 // Class of Vector Types
618 class TypeVect : public Type {
619 const Type* _elem; // Vector's element type
620 const uint _length; // Elements in vector (power of 2)
621
622 protected:
623 TypeVect(TYPES t, const Type* elem, uint length) : Type(t),
624 _elem(elem), _length(length) {}
625
626 public:
627 const Type* element_type() const { return _elem; }
628 BasicType element_basic_type() const { return _elem->array_element_basic_type(); }
629 uint length() const { return _length; }
630 uint length_in_bytes() const {
631 return _length * type2aelembytes(element_basic_type());
632 }
633
634 virtual bool eq(const Type *t) const;
635 virtual int hash() const; // Type specific hashing
636 virtual bool singleton(void) const; // TRUE if type is a singleton
637 virtual bool empty(void) const; // TRUE if type is vacuous
638
639 static const TypeVect *make(const BasicType elem_bt, uint length) {
640 // Use bottom primitive type.
641 return make(get_const_basic_type(elem_bt), length);
642 }
643 // Used directly by Replicate nodes to construct singleton vector.
644 static const TypeVect *make(const Type* elem, uint length);
645
646 virtual const Type *xmeet( const Type *t) const;
647 virtual const Type *xdual() const; // Compute dual right now.
648
649 static const TypeVect *VECTS;
650 static const TypeVect *VECTD;
651 static const TypeVect *VECTX;
652 static const TypeVect *VECTY;
653
654 #ifndef PRODUCT
655 virtual void dump2(Dict &d, uint, outputStream *st) const; // Specialized per-Type dumping
656 #endif
657 };
658
659 class TypeVectS : public TypeVect {
660 friend class TypeVect;
661 TypeVectS(const Type* elem, uint length) : TypeVect(VectorS, elem, length) {}
662 };
663
664 class TypeVectD : public TypeVect {
665 friend class TypeVect;
666 TypeVectD(const Type* elem, uint length) : TypeVect(VectorD, elem, length) {}
667 };
668
669 class TypeVectX : public TypeVect {
670 friend class TypeVect;
671 TypeVectX(const Type* elem, uint length) : TypeVect(VectorX, elem, length) {}
672 };
673
674 class TypeVectY : public TypeVect {
675 friend class TypeVect;
676 TypeVectY(const Type* elem, uint length) : TypeVect(VectorY, elem, length) {}
677 };
678
679 //------------------------------TypePtr----------------------------------------
680 // Class of machine Pointer Types: raw data, instances or arrays.
681 // If the _base enum is AnyPtr, then this refers to all of the above.
682 // Otherwise the _base will indicate which subset of pointers is affected,
683 // and the class will be inherited from.
684 class TypePtr : public Type {
685 friend class TypeNarrowPtr;
686 public:
687 enum PTR { TopPTR, AnyNull, Constant, Null, NotNull, BotPTR, lastPTR };
688 protected:
689 TypePtr( TYPES t, PTR ptr, int offset ) : Type(t), _ptr(ptr), _offset(offset) {}
690 virtual bool eq( const Type *t ) const;
691 virtual int hash() const; // Type specific hashing
692 static const PTR ptr_meet[lastPTR][lastPTR];
693 static const PTR ptr_dual[lastPTR];
694 static const char * const ptr_msg[lastPTR];
695
696 public:
697 const int _offset; // Offset into oop, with TOP & BOT
698 const PTR _ptr; // Pointer equivalence class
699
700 const int offset() const { return _offset; }
701 const PTR ptr() const { return _ptr; }
702
703 static const TypePtr *make( TYPES t, PTR ptr, int offset );
704
705 // Return a 'ptr' version of this type
706 virtual const Type *cast_to_ptr_type(PTR ptr) const;
707
708 virtual intptr_t get_con() const;
709
710 int xadd_offset( intptr_t offset ) const;
711 virtual const TypePtr *add_offset( intptr_t offset ) const;
712
713 virtual bool singleton(void) const; // TRUE if type is a singleton
714 virtual bool empty(void) const; // TRUE if type is vacuous
715 virtual const Type *xmeet( const Type *t ) const;
716 int meet_offset( int offset ) const;
717 int dual_offset( ) const;
718 virtual const Type *xdual() const; // Compute dual right now.
719
720 // meet, dual and join over pointer equivalence sets
721 PTR meet_ptr( const PTR in_ptr ) const { return ptr_meet[in_ptr][ptr()]; }
722 PTR dual_ptr() const { return ptr_dual[ptr()]; }
723
724 // This is textually confusing unless one recalls that
725 // join(t) == dual()->meet(t->dual())->dual().
726 PTR join_ptr( const PTR in_ptr ) const {
727 return ptr_dual[ ptr_meet[ ptr_dual[in_ptr] ] [ dual_ptr() ] ];
728 }
729
730 // Tests for relation to centerline of type lattice:
731 static bool above_centerline(PTR ptr) { return (ptr <= AnyNull); }
732 static bool below_centerline(PTR ptr) { return (ptr >= NotNull); }
733 // Convenience common pre-built types.
734 static const TypePtr *NULL_PTR;
735 static const TypePtr *NOTNULL;
736 static const TypePtr *BOTTOM;
737 #ifndef PRODUCT
738 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
739 #endif
740 };
741
742 //------------------------------TypeRawPtr-------------------------------------
743 // Class of raw pointers, pointers to things other than Oops. Examples
744 // include the stack pointer, top of heap, card-marking area, handles, etc.
745 class TypeRawPtr : public TypePtr {
746 protected:
747 TypeRawPtr( PTR ptr, address bits ) : TypePtr(RawPtr,ptr,0), _bits(bits){}
748 public:
749 virtual bool eq( const Type *t ) const;
750 virtual int hash() const; // Type specific hashing
751
752 const address _bits; // Constant value, if applicable
753
754 static const TypeRawPtr *make( PTR ptr );
755 static const TypeRawPtr *make( address bits );
756
757 // Return a 'ptr' version of this type
758 virtual const Type *cast_to_ptr_type(PTR ptr) const;
759
760 virtual intptr_t get_con() const;
761
762 virtual const TypePtr *add_offset( intptr_t offset ) const;
763
764 virtual const Type *xmeet( const Type *t ) const;
765 virtual const Type *xdual() const; // Compute dual right now.
766 // Convenience common pre-built types.
767 static const TypeRawPtr *BOTTOM;
768 static const TypeRawPtr *NOTNULL;
769 #ifndef PRODUCT
770 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
771 #endif
772 };
773
774 //------------------------------TypeOopPtr-------------------------------------
775 // Some kind of oop (Java pointer), either klass or instance or array.
776 class TypeOopPtr : public TypePtr {
777 protected:
778 TypeOopPtr( TYPES t, PTR ptr, ciKlass* k, bool xk, ciObject* o, int offset, int instance_id );
779 public:
780 virtual bool eq( const Type *t ) const;
781 virtual int hash() const; // Type specific hashing
782 virtual bool singleton(void) const; // TRUE if type is a singleton
783 enum {
784 InstanceTop = -1, // undefined instance
785 InstanceBot = 0 // any possible instance
786 };
787 protected:
788
789 // Oop is NULL, unless this is a constant oop.
790 ciObject* _const_oop; // Constant oop
791 // If _klass is NULL, then so is _sig. This is an unloaded klass.
792 ciKlass* _klass; // Klass object
793 // Does the type exclude subclasses of the klass? (Inexact == polymorphic.)
794 bool _klass_is_exact;
795 bool _is_ptr_to_narrowoop;
796 bool _is_ptr_to_narrowklass;
797
798 // If not InstanceTop or InstanceBot, indicates that this is
799 // a particular instance of this type which is distinct.
800 // This is the the node index of the allocation node creating this instance.
801 int _instance_id;
802
803 static const TypeOopPtr* make_from_klass_common(ciKlass* klass, bool klass_change, bool try_for_exact);
804
805 int dual_instance_id() const;
806 int meet_instance_id(int uid) const;
807
808 public:
809 // Creates a type given a klass. Correctly handles multi-dimensional arrays
810 // Respects UseUniqueSubclasses.
811 // If the klass is final, the resulting type will be exact.
812 static const TypeOopPtr* make_from_klass(ciKlass* klass) {
813 return make_from_klass_common(klass, true, false);
814 }
815 // Same as before, but will produce an exact type, even if
816 // the klass is not final, as long as it has exactly one implementation.
817 static const TypeOopPtr* make_from_klass_unique(ciKlass* klass) {
818 return make_from_klass_common(klass, true, true);
819 }
820 // Same as before, but does not respects UseUniqueSubclasses.
821 // Use this only for creating array element types.
822 static const TypeOopPtr* make_from_klass_raw(ciKlass* klass) {
823 return make_from_klass_common(klass, false, false);
824 }
825 // Creates a singleton type given an object.
826 // If the object cannot be rendered as a constant,
827 // may return a non-singleton type.
828 // If require_constant, produce a NULL if a singleton is not possible.
829 static const TypeOopPtr* make_from_constant(ciObject* o, bool require_constant = false);
830
831 // Make a generic (unclassed) pointer to an oop.
832 static const TypeOopPtr* make(PTR ptr, int offset, int instance_id);
833
834 ciObject* const_oop() const { return _const_oop; }
835 virtual ciKlass* klass() const { return _klass; }
836 bool klass_is_exact() const { return _klass_is_exact; }
837
838 // Returns true if this pointer points at memory which contains a
839 // compressed oop references.
840 bool is_ptr_to_narrowoop_nv() const { return _is_ptr_to_narrowoop; }
841 bool is_ptr_to_narrowklass_nv() const { return _is_ptr_to_narrowklass; }
842
843 bool is_known_instance() const { return _instance_id > 0; }
844 int instance_id() const { return _instance_id; }
845 bool is_known_instance_field() const { return is_known_instance() && _offset >= 0; }
846
847 virtual intptr_t get_con() const;
848
849 virtual const Type *cast_to_ptr_type(PTR ptr) const;
850
851 virtual const Type *cast_to_exactness(bool klass_is_exact) const;
852
853 virtual const TypeOopPtr *cast_to_instance_id(int instance_id) const;
854
855 // corresponding pointer to klass, for a given instance
856 const TypeKlassPtr* as_klass_type() const;
857
858 virtual const TypePtr *add_offset( intptr_t offset ) const;
859
860 virtual const Type *xmeet( const Type *t ) const;
861 virtual const Type *xdual() const; // Compute dual right now.
862
863 // Do not allow interface-vs.-noninterface joins to collapse to top.
864 virtual const Type *filter( const Type *kills ) const;
865
866 // Convenience common pre-built type.
867 static const TypeOopPtr *BOTTOM;
868 #ifndef PRODUCT
869 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
870 #endif
871 };
872
873 //------------------------------TypeInstPtr------------------------------------
874 // Class of Java object pointers, pointing either to non-array Java instances
875 // or to a Klass* (including array klasses).
876 class TypeInstPtr : public TypeOopPtr {
877 TypeInstPtr( PTR ptr, ciKlass* k, bool xk, ciObject* o, int offset, int instance_id );
878 virtual bool eq( const Type *t ) const;
879 virtual int hash() const; // Type specific hashing
880
881 ciSymbol* _name; // class name
882
883 public:
884 ciSymbol* name() const { return _name; }
885
886 bool is_loaded() const { return _klass->is_loaded(); }
887
888 // Make a pointer to a constant oop.
889 static const TypeInstPtr *make(ciObject* o) {
890 return make(TypePtr::Constant, o->klass(), true, o, 0);
891 }
892 // Make a pointer to a constant oop with offset.
893 static const TypeInstPtr *make(ciObject* o, int offset) {
894 return make(TypePtr::Constant, o->klass(), true, o, offset);
895 }
896
897 // Make a pointer to some value of type klass.
898 static const TypeInstPtr *make(PTR ptr, ciKlass* klass) {
899 return make(ptr, klass, false, NULL, 0);
900 }
901
902 // Make a pointer to some non-polymorphic value of exactly type klass.
903 static const TypeInstPtr *make_exact(PTR ptr, ciKlass* klass) {
904 return make(ptr, klass, true, NULL, 0);
905 }
906
907 // Make a pointer to some value of type klass with offset.
908 static const TypeInstPtr *make(PTR ptr, ciKlass* klass, int offset) {
909 return make(ptr, klass, false, NULL, offset);
910 }
911
912 // Make a pointer to an oop.
913 static const TypeInstPtr *make(PTR ptr, ciKlass* k, bool xk, ciObject* o, int offset, int instance_id = InstanceBot );
914
915 // If this is a java.lang.Class constant, return the type for it or NULL.
916 // Pass to Type::get_const_type to turn it to a type, which will usually
917 // be a TypeInstPtr, but may also be a TypeInt::INT for int.class, etc.
918 ciType* java_mirror_type() const;
919
920 virtual const Type *cast_to_ptr_type(PTR ptr) const;
921
922 virtual const Type *cast_to_exactness(bool klass_is_exact) const;
923
924 virtual const TypeOopPtr *cast_to_instance_id(int instance_id) const;
925
926 virtual const TypePtr *add_offset( intptr_t offset ) const;
927
928 virtual const Type *xmeet( const Type *t ) const;
929 virtual const TypeInstPtr *xmeet_unloaded( const TypeInstPtr *t ) const;
930 virtual const Type *xdual() const; // Compute dual right now.
931
932 // Convenience common pre-built types.
933 static const TypeInstPtr *NOTNULL;
934 static const TypeInstPtr *BOTTOM;
935 static const TypeInstPtr *MIRROR;
936 static const TypeInstPtr *MARK;
937 static const TypeInstPtr *KLASS;
938 #ifndef PRODUCT
939 virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
940 #endif
941 };
942
943 //------------------------------TypeAryPtr-------------------------------------
944 // Class of Java array pointers
945 class TypeAryPtr : public TypeOopPtr {
946 TypeAryPtr( PTR ptr, ciObject* o, const TypeAry *ary, ciKlass* k, bool xk, int offset, int instance_id ) : TypeOopPtr(AryPtr,ptr,k,xk,o,offset, instance_id), _ary(ary) {
947 #ifdef ASSERT
948 if (k != NULL) {
949 // Verify that specified klass and TypeAryPtr::klass() follow the same rules.
950 ciKlass* ck = compute_klass(true);
951 if (k != ck) {
952 this->dump(); tty->cr();
953 tty->print(" k: ");
954 k->print(); tty->cr();
955 tty->print("ck: ");
956 if (ck != NULL) ck->print();
957 else tty->print("<NULL>");
958 tty->cr();
959 assert(false, "unexpected TypeAryPtr::_klass");
960 }
961 }
962 #endif
963 }
964 virtual bool eq( const Type *t ) const;
965 virtual int hash() const; // Type specific hashing
966 const TypeAry *_ary; // Array we point into
967
968 ciKlass* compute_klass(DEBUG_ONLY(bool verify = false)) const;
969
970 public:
971 // Accessors
972 ciKlass* klass() const;
973 const TypeAry* ary() const { return _ary; }
974 const Type* elem() const { return _ary->_elem; }
975 const TypeInt* size() const { return _ary->_size; }
976
977 static const TypeAryPtr *make( PTR ptr, const TypeAry *ary, ciKlass* k, bool xk, int offset, int instance_id = InstanceBot);
978 // Constant pointer to array
979 static const TypeAryPtr *make( PTR ptr, ciObject* o, const TypeAry *ary, ciKlass* k, bool xk, int offset, int instance_id = InstanceBot);
980
981 // Return a 'ptr' version of this type
982 virtual const Type *cast_to_ptr_type(PTR ptr) const;
983
984 virtual const Type *cast_to_exactness(bool klass_is_exact) const;
985
986 virtual const TypeOopPtr *cast_to_instance_id(int instance_id) const;
987
988 virtual const TypeAryPtr* cast_to_size(const TypeInt* size) const;
989 virtual const TypeInt* narrow_size_type(const TypeInt* size) const;
990
991 virtual bool empty(void) const; // TRUE if type is vacuous
992 virtual const TypePtr *add_offset( intptr_t offset ) const;
993
994 virtual const Type *xmeet( const Type *t ) const;
995 virtual const Type *xdual() const; // Compute dual right now.
996
997 // Convenience common pre-built types.
998 static const TypeAryPtr *RANGE;
999 static const TypeAryPtr *OOPS;
1000 static const TypeAryPtr *NARROWOOPS;
1001 static const TypeAryPtr *BYTES;
1002 static const TypeAryPtr *SHORTS;
1003 static const TypeAryPtr *CHARS;
1004 static const TypeAryPtr *INTS;
1005 static const TypeAryPtr *LONGS;
1006 static const TypeAryPtr *FLOATS;
1007 static const TypeAryPtr *DOUBLES;
1008 // selects one of the above:
1009 static const TypeAryPtr *get_array_body_type(BasicType elem) {
1010 assert((uint)elem <= T_CONFLICT && _array_body_type[elem] != NULL, "bad elem type");
1011 return _array_body_type[elem];
1012 }
1013 static const TypeAryPtr *_array_body_type[T_CONFLICT+1];
1014 // sharpen the type of an int which is used as an array size
1015 #ifdef ASSERT
1016 // One type is interface, the other is oop
1017 virtual bool interface_vs_oop(const Type *t) const;
1018 #endif
1019 #ifndef PRODUCT
1020 virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
1021 #endif
1022 };
1023
1024 //------------------------------TypeMetadataPtr-------------------------------------
1025 // Some kind of metadata, either Method*, MethodData* or CPCacheOop
1026 class TypeMetadataPtr : public TypePtr {
1027 protected:
1028 TypeMetadataPtr(PTR ptr, ciMetadata* metadata, int offset);
1029 public:
1030 virtual bool eq( const Type *t ) const;
1031 virtual int hash() const; // Type specific hashing
1032 virtual bool singleton(void) const; // TRUE if type is a singleton
1033
1034 private:
1035 ciMetadata* _metadata;
1036
1037 public:
1038 static const TypeMetadataPtr* make(PTR ptr, ciMetadata* m, int offset);
1039
1040 static const TypeMetadataPtr* make(ciMethod* m);
1041 static const TypeMetadataPtr* make(ciMethodData* m);
1042
1043 ciMetadata* metadata() const { return _metadata; }
1044
1045 virtual const Type *cast_to_ptr_type(PTR ptr) const;
1046
1047 virtual const TypePtr *add_offset( intptr_t offset ) const;
1048
1049 virtual const Type *xmeet( const Type *t ) const;
1050 virtual const Type *xdual() const; // Compute dual right now.
1051
1052 virtual intptr_t get_con() const;
1053
1054 // Do not allow interface-vs.-noninterface joins to collapse to top.
1055 virtual const Type *filter( const Type *kills ) const;
1056
1057 // Convenience common pre-built types.
1058 static const TypeMetadataPtr *BOTTOM;
1059
1060 #ifndef PRODUCT
1061 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
1062 #endif
1063 };
1064
1065 //------------------------------TypeKlassPtr-----------------------------------
1066 // Class of Java Klass pointers
1067 class TypeKlassPtr : public TypePtr {
1068 TypeKlassPtr( PTR ptr, ciKlass* klass, int offset );
1069
1070 public:
1071 virtual bool eq( const Type *t ) const;
1072 virtual int hash() const; // Type specific hashing
1073 virtual bool singleton(void) const; // TRUE if type is a singleton
1074 private:
1075
1076 static const TypeKlassPtr* make_from_klass_common(ciKlass* klass, bool klass_change, bool try_for_exact);
1077
1078 ciKlass* _klass;
1079
1080 // Does the type exclude subclasses of the klass? (Inexact == polymorphic.)
1081 bool _klass_is_exact;
1082
1083 public:
1084 ciSymbol* name() const { return klass()->name(); }
1085
1086 ciKlass* klass() const { return _klass; }
1087 bool klass_is_exact() const { return _klass_is_exact; }
1088
1089 bool is_loaded() const { return klass()->is_loaded(); }
1090
1091 // Creates a type given a klass. Correctly handles multi-dimensional arrays
1092 // Respects UseUniqueSubclasses.
1093 // If the klass is final, the resulting type will be exact.
1094 static const TypeKlassPtr* make_from_klass(ciKlass* klass) {
1095 return make_from_klass_common(klass, true, false);
1096 }
1097 // Same as before, but will produce an exact type, even if
1098 // the klass is not final, as long as it has exactly one implementation.
1099 static const TypeKlassPtr* make_from_klass_unique(ciKlass* klass) {
1100 return make_from_klass_common(klass, true, true);
1101 }
1102 // Same as before, but does not respects UseUniqueSubclasses.
1103 // Use this only for creating array element types.
1104 static const TypeKlassPtr* make_from_klass_raw(ciKlass* klass) {
1105 return make_from_klass_common(klass, false, false);
1106 }
1107
1108 // Make a generic (unclassed) pointer to metadata.
1109 static const TypeKlassPtr* make(PTR ptr, int offset);
1110
1111 // ptr to klass 'k'
1112 static const TypeKlassPtr *make( ciKlass* k ) { return make( TypePtr::Constant, k, 0); }
1113 // ptr to klass 'k' with offset
1114 static const TypeKlassPtr *make( ciKlass* k, int offset ) { return make( TypePtr::Constant, k, offset); }
1115 // ptr to klass 'k' or sub-klass
1116 static const TypeKlassPtr *make( PTR ptr, ciKlass* k, int offset);
1117
1118 virtual const Type *cast_to_ptr_type(PTR ptr) const;
1119
1120 virtual const Type *cast_to_exactness(bool klass_is_exact) const;
1121
1122 // corresponding pointer to instance, for a given class
1123 const TypeOopPtr* as_instance_type() const;
1124
1125 virtual const TypePtr *add_offset( intptr_t offset ) const;
1126 virtual const Type *xmeet( const Type *t ) const;
1127 virtual const Type *xdual() const; // Compute dual right now.
1128
1129 virtual intptr_t get_con() const;
1130
1131 // Convenience common pre-built types.
1132 static const TypeKlassPtr* OBJECT; // Not-null object klass or below
1133 static const TypeKlassPtr* OBJECT_OR_NULL; // Maybe-null version of same
1134 #ifndef PRODUCT
1135 virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
1136 #endif
1137 };
1138
1139 class TypeNarrowPtr : public Type {
1140 protected:
1141 const TypePtr* _ptrtype; // Could be TypePtr::NULL_PTR
1142
1143 TypeNarrowPtr(TYPES t, const TypePtr* ptrtype): _ptrtype(ptrtype),
1144 Type(t) {
1145 assert(ptrtype->offset() == 0 ||
1146 ptrtype->offset() == OffsetBot ||
1147 ptrtype->offset() == OffsetTop, "no real offsets");
1148 }
1149
1150 virtual const TypeNarrowPtr *isa_same_narrowptr(const Type *t) const = 0;
1151 virtual const TypeNarrowPtr *is_same_narrowptr(const Type *t) const = 0;
1152 virtual const TypeNarrowPtr *make_same_narrowptr(const TypePtr *t) const = 0;
1153 virtual const TypeNarrowPtr *make_hash_same_narrowptr(const TypePtr *t) const = 0;
1154 public:
1155 virtual bool eq( const Type *t ) const;
1156 virtual int hash() const; // Type specific hashing
1157 virtual bool singleton(void) const; // TRUE if type is a singleton
1158
1159 virtual const Type *xmeet( const Type *t ) const;
1160 virtual const Type *xdual() const; // Compute dual right now.
1161
1162 virtual intptr_t get_con() const;
1163
1164 // Do not allow interface-vs.-noninterface joins to collapse to top.
1165 virtual const Type *filter( const Type *kills ) const;
1166
1167 virtual bool empty(void) const; // TRUE if type is vacuous
1168
1169 // returns the equivalent ptr type for this compressed pointer
1170 const TypePtr *get_ptrtype() const {
1171 return _ptrtype;
1172 }
1173
1174 #ifndef PRODUCT
1175 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
1176 #endif
1177 };
1178
1179 //------------------------------TypeNarrowOop----------------------------------
1180 // A compressed reference to some kind of Oop. This type wraps around
1181 // a preexisting TypeOopPtr and forwards most of it's operations to
1182 // the underlying type. It's only real purpose is to track the
1183 // oopness of the compressed oop value when we expose the conversion
1184 // between the normal and the compressed form.
1185 class TypeNarrowOop : public TypeNarrowPtr {
1186 protected:
1187 TypeNarrowOop( const TypePtr* ptrtype): TypeNarrowPtr(NarrowOop, ptrtype) {
1188 }
1189
1190 virtual const TypeNarrowPtr *isa_same_narrowptr(const Type *t) const {
1191 return t->isa_narrowoop();
1192 }
1193
1194 virtual const TypeNarrowPtr *is_same_narrowptr(const Type *t) const {
1195 return t->is_narrowoop();
1196 }
1197
1198 virtual const TypeNarrowPtr *make_same_narrowptr(const TypePtr *t) const {
1199 return new TypeNarrowOop(t);
1200 }
1201
1202 virtual const TypeNarrowPtr *make_hash_same_narrowptr(const TypePtr *t) const {
1203 return (const TypeNarrowPtr*)((new TypeNarrowOop(t))->hashcons());
1204 }
1205
1206 public:
1207
1208 static const TypeNarrowOop *make( const TypePtr* type);
1209
1210 static const TypeNarrowOop* make_from_constant(ciObject* con, bool require_constant = false) {
1211 return make(TypeOopPtr::make_from_constant(con, require_constant));
1212 }
1213
1214 static const TypeNarrowOop *BOTTOM;
1215 static const TypeNarrowOop *NULL_PTR;
1216
1217 #ifndef PRODUCT
1218 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
1219 #endif
1220 };
1221
1222 //------------------------------TypeNarrowKlass----------------------------------
1223 // A compressed reference to klass pointer. This type wraps around a
1224 // preexisting TypeKlassPtr and forwards most of it's operations to
1225 // the underlying type.
1226 class TypeNarrowKlass : public TypeNarrowPtr {
1227 protected:
1228 TypeNarrowKlass( const TypePtr* ptrtype): TypeNarrowPtr(NarrowKlass, ptrtype) {
1229 }
1230
1231 virtual const TypeNarrowPtr *isa_same_narrowptr(const Type *t) const {
1232 return t->isa_narrowklass();
1233 }
1234
1235 virtual const TypeNarrowPtr *is_same_narrowptr(const Type *t) const {
1236 return t->is_narrowklass();
1237 }
1238
1239 virtual const TypeNarrowPtr *make_same_narrowptr(const TypePtr *t) const {
1240 return new TypeNarrowKlass(t);
1241 }
1242
1243 virtual const TypeNarrowPtr *make_hash_same_narrowptr(const TypePtr *t) const {
1244 return (const TypeNarrowPtr*)((new TypeNarrowKlass(t))->hashcons());
1245 }
1246
1247 public:
1248 static const TypeNarrowKlass *make( const TypePtr* type);
1249
1250 // static const TypeNarrowKlass *BOTTOM;
1251 static const TypeNarrowKlass *NULL_PTR;
1252
1253 #ifndef PRODUCT
1254 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
1255 #endif
1256 };
1257
1258 //------------------------------TypeFunc---------------------------------------
1259 // Class of Array Types
1260 class TypeFunc : public Type {
1261 TypeFunc( const TypeTuple *domain, const TypeTuple *range ) : Type(Function), _domain(domain), _range(range) {}
1262 virtual bool eq( const Type *t ) const;
1263 virtual int hash() const; // Type specific hashing
1264 virtual bool singleton(void) const; // TRUE if type is a singleton
1265 virtual bool empty(void) const; // TRUE if type is vacuous
1266 public:
1267 // Constants are shared among ADLC and VM
1268 enum { Control = AdlcVMDeps::Control,
1269 I_O = AdlcVMDeps::I_O,
1270 Memory = AdlcVMDeps::Memory,
1271 FramePtr = AdlcVMDeps::FramePtr,
1272 ReturnAdr = AdlcVMDeps::ReturnAdr,
1273 Parms = AdlcVMDeps::Parms
1274 };
1275
1276 const TypeTuple* const _domain; // Domain of inputs
1277 const TypeTuple* const _range; // Range of results
1278
1279 // Accessors:
1280 const TypeTuple* domain() const { return _domain; }
1281 const TypeTuple* range() const { return _range; }
1282
1283 static const TypeFunc *make(ciMethod* method);
1284 static const TypeFunc *make(ciSignature signature, const Type* extra);
1285 static const TypeFunc *make(const TypeTuple* domain, const TypeTuple* range);
1286
1287 virtual const Type *xmeet( const Type *t ) const;
1288 virtual const Type *xdual() const; // Compute dual right now.
1289
1290 BasicType return_type() const;
1291
1292 #ifndef PRODUCT
1293 virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
1294 #endif
1295 // Convenience common pre-built types.
1296 };
1297
1298 //------------------------------accessors--------------------------------------
1299 inline bool Type::is_ptr_to_narrowoop() const {
1300 #ifdef _LP64
1301 return (isa_oopptr() != NULL && is_oopptr()->is_ptr_to_narrowoop_nv());
1302 #else
1303 return false;
1304 #endif
1305 }
1306
1307 inline bool Type::is_ptr_to_narrowklass() const {
1308 #ifdef _LP64
1309 return (isa_oopptr() != NULL && is_oopptr()->is_ptr_to_narrowklass_nv());
1310 #else
1311 return false;
1312 #endif
1313 }
1314
1315 inline float Type::getf() const {
1316 assert( _base == FloatCon, "Not a FloatCon" );
1317 return ((TypeF*)this)->_f;
1318 }
1319
1320 inline double Type::getd() const {
1321 assert( _base == DoubleCon, "Not a DoubleCon" );
1322 return ((TypeD*)this)->_d;
1323 }
1324
1325 inline const TypeInt *Type::is_int() const {
1326 assert( _base == Int, "Not an Int" );
1327 return (TypeInt*)this;
1328 }
1329
1330 inline const TypeInt *Type::isa_int() const {
1331 return ( _base == Int ? (TypeInt*)this : NULL);
1332 }
1333
1334 inline const TypeLong *Type::is_long() const {
1335 assert( _base == Long, "Not a Long" );
1336 return (TypeLong*)this;
1337 }
1338
1339 inline const TypeLong *Type::isa_long() const {
1340 return ( _base == Long ? (TypeLong*)this : NULL);
1341 }
1342
1343 inline const TypeF *Type::isa_float() const {
1344 return ((_base == FloatTop ||
1345 _base == FloatCon ||
1346 _base == FloatBot) ? (TypeF*)this : NULL);
1347 }
1348
1349 inline const TypeF *Type::is_float_constant() const {
1350 assert( _base == FloatCon, "Not a Float" );
1351 return (TypeF*)this;
1352 }
1353
1354 inline const TypeF *Type::isa_float_constant() const {
1355 return ( _base == FloatCon ? (TypeF*)this : NULL);
1356 }
1357
1358 inline const TypeD *Type::isa_double() const {
1359 return ((_base == DoubleTop ||
1360 _base == DoubleCon ||
1361 _base == DoubleBot) ? (TypeD*)this : NULL);
1362 }
1363
1364 inline const TypeD *Type::is_double_constant() const {
1365 assert( _base == DoubleCon, "Not a Double" );
1366 return (TypeD*)this;
1367 }
1368
1369 inline const TypeD *Type::isa_double_constant() const {
1370 return ( _base == DoubleCon ? (TypeD*)this : NULL);
1371 }
1372
1373 inline const TypeTuple *Type::is_tuple() const {
1374 assert( _base == Tuple, "Not a Tuple" );
1375 return (TypeTuple*)this;
1376 }
1377
1378 inline const TypeAry *Type::is_ary() const {
1379 assert( _base == Array , "Not an Array" );
1380 return (TypeAry*)this;
1381 }
1382
1383 inline const TypeVect *Type::is_vect() const {
1384 assert( _base >= VectorS && _base <= VectorY, "Not a Vector" );
1385 return (TypeVect*)this;
1386 }
1387
1388 inline const TypeVect *Type::isa_vect() const {
1389 return (_base >= VectorS && _base <= VectorY) ? (TypeVect*)this : NULL;
1390 }
1391
1392 inline const TypePtr *Type::is_ptr() const {
1393 // AnyPtr is the first Ptr and KlassPtr the last, with no non-ptrs between.
1394 assert(_base >= AnyPtr && _base <= KlassPtr, "Not a pointer");
1395 return (TypePtr*)this;
1396 }
1397
1398 inline const TypePtr *Type::isa_ptr() const {
1399 // AnyPtr is the first Ptr and KlassPtr the last, with no non-ptrs between.
1400 return (_base >= AnyPtr && _base <= KlassPtr) ? (TypePtr*)this : NULL;
1401 }
1402
1403 inline const TypeOopPtr *Type::is_oopptr() const {
1404 // OopPtr is the first and KlassPtr the last, with no non-oops between.
1405 assert(_base >= OopPtr && _base <= AryPtr, "Not a Java pointer" ) ;
1406 return (TypeOopPtr*)this;
1407 }
1408
1409 inline const TypeOopPtr *Type::isa_oopptr() const {
1410 // OopPtr is the first and KlassPtr the last, with no non-oops between.
1411 return (_base >= OopPtr && _base <= AryPtr) ? (TypeOopPtr*)this : NULL;
1412 }
1413
1414 inline const TypeRawPtr *Type::isa_rawptr() const {
1415 return (_base == RawPtr) ? (TypeRawPtr*)this : NULL;
1416 }
1417
1418 inline const TypeRawPtr *Type::is_rawptr() const {
1419 assert( _base == RawPtr, "Not a raw pointer" );
1420 return (TypeRawPtr*)this;
1421 }
1422
1423 inline const TypeInstPtr *Type::isa_instptr() const {
1424 return (_base == InstPtr) ? (TypeInstPtr*)this : NULL;
1425 }
1426
1427 inline const TypeInstPtr *Type::is_instptr() const {
1428 assert( _base == InstPtr, "Not an object pointer" );
1429 return (TypeInstPtr*)this;
1430 }
1431
1432 inline const TypeAryPtr *Type::isa_aryptr() const {
1433 return (_base == AryPtr) ? (TypeAryPtr*)this : NULL;
1434 }
1435
1436 inline const TypeAryPtr *Type::is_aryptr() const {
1437 assert( _base == AryPtr, "Not an array pointer" );
1438 return (TypeAryPtr*)this;
1439 }
1440
1441 inline const TypeNarrowOop *Type::is_narrowoop() const {
1442 // OopPtr is the first and KlassPtr the last, with no non-oops between.
1443 assert(_base == NarrowOop, "Not a narrow oop" ) ;
1444 return (TypeNarrowOop*)this;
1445 }
1446
1447 inline const TypeNarrowOop *Type::isa_narrowoop() const {
1448 // OopPtr is the first and KlassPtr the last, with no non-oops between.
1449 return (_base == NarrowOop) ? (TypeNarrowOop*)this : NULL;
1450 }
1451
1452 inline const TypeNarrowKlass *Type::is_narrowklass() const {
1453 assert(_base == NarrowKlass, "Not a narrow oop" ) ;
1454 return (TypeNarrowKlass*)this;
1455 }
1456
1457 inline const TypeNarrowKlass *Type::isa_narrowklass() const {
1458 return (_base == NarrowKlass) ? (TypeNarrowKlass*)this : NULL;
1459 }
1460
1461 inline const TypeMetadataPtr *Type::is_metadataptr() const {
1462 // MetadataPtr is the first and CPCachePtr the last
1463 assert(_base == MetadataPtr, "Not a metadata pointer" ) ;
1464 return (TypeMetadataPtr*)this;
1465 }
1466
1467 inline const TypeMetadataPtr *Type::isa_metadataptr() const {
1468 return (_base == MetadataPtr) ? (TypeMetadataPtr*)this : NULL;
1469 }
1470
1471 inline const TypeKlassPtr *Type::isa_klassptr() const {
1472 return (_base == KlassPtr) ? (TypeKlassPtr*)this : NULL;
1473 }
1474
1475 inline const TypeKlassPtr *Type::is_klassptr() const {
1476 assert( _base == KlassPtr, "Not a klass pointer" );
1477 return (TypeKlassPtr*)this;
1478 }
1479
1480 inline const TypePtr* Type::make_ptr() const {
1481 return (_base == NarrowOop) ? is_narrowoop()->get_ptrtype() :
1482 ((_base == NarrowKlass) ? is_narrowklass()->get_ptrtype() :
1483 (isa_ptr() ? is_ptr() : NULL));
1484 }
1485
1486 inline const TypeOopPtr* Type::make_oopptr() const {
1487 return (_base == NarrowOop) ? is_narrowoop()->get_ptrtype()->is_oopptr() : is_oopptr();
1488 }
1489
1490 inline const TypeNarrowOop* Type::make_narrowoop() const {
1491 return (_base == NarrowOop) ? is_narrowoop() :
1492 (isa_ptr() ? TypeNarrowOop::make(is_ptr()) : NULL);
1493 }
1494
1495 inline const TypeNarrowKlass* Type::make_narrowklass() const {
1496 return (_base == NarrowKlass) ? is_narrowklass() :
1497 (isa_ptr() ? TypeNarrowKlass::make(is_ptr()) : NULL);
1498 }
1499
1500 inline bool Type::is_floatingpoint() const {
1501 if( (_base == FloatCon) || (_base == FloatBot) ||
1502 (_base == DoubleCon) || (_base == DoubleBot) )
1503 return true;
1504 return false;
1505 }
1506
1507
1508 // ===============================================================
1509 // Things that need to be 64-bits in the 64-bit build but
1510 // 32-bits in the 32-bit build. Done this way to get full
1511 // optimization AND strong typing.
1512 #ifdef _LP64
1513
1514 // For type queries and asserts
1515 #define is_intptr_t is_long
1516 #define isa_intptr_t isa_long
1517 #define find_intptr_t_type find_long_type
1518 #define find_intptr_t_con find_long_con
1519 #define TypeX TypeLong
1520 #define Type_X Type::Long
1521 #define TypeX_X TypeLong::LONG
1522 #define TypeX_ZERO TypeLong::ZERO
1523 // For 'ideal_reg' machine registers
1524 #define Op_RegX Op_RegL
1525 // For phase->intcon variants
1526 #define MakeConX longcon
1527 #define ConXNode ConLNode
1528 // For array index arithmetic
1529 #define MulXNode MulLNode
1530 #define AndXNode AndLNode
1531 #define OrXNode OrLNode
1532 #define CmpXNode CmpLNode
1533 #define SubXNode SubLNode
1534 #define LShiftXNode LShiftLNode
1535 // For object size computation:
1536 #define AddXNode AddLNode
1537 #define RShiftXNode RShiftLNode
1538 // For card marks and hashcodes
1539 #define URShiftXNode URShiftLNode
1540 // UseOptoBiasInlining
1541 #define XorXNode XorLNode
1542 #define StoreXConditionalNode StoreLConditionalNode
1543 // Opcodes
1544 #define Op_LShiftX Op_LShiftL
1545 #define Op_AndX Op_AndL
1546 #define Op_AddX Op_AddL
1547 #define Op_SubX Op_SubL
1548 #define Op_XorX Op_XorL
1549 #define Op_URShiftX Op_URShiftL
1550 // conversions
1551 #define ConvI2X(x) ConvI2L(x)
1552 #define ConvL2X(x) (x)
1553 #define ConvX2I(x) ConvL2I(x)
1554 #define ConvX2L(x) (x)
1555
1556 #else
1557
1558 // For type queries and asserts
1559 #define is_intptr_t is_int
1560 #define isa_intptr_t isa_int
1561 #define find_intptr_t_type find_int_type
1562 #define find_intptr_t_con find_int_con
1563 #define TypeX TypeInt
1564 #define Type_X Type::Int
1565 #define TypeX_X TypeInt::INT
1566 #define TypeX_ZERO TypeInt::ZERO
1567 // For 'ideal_reg' machine registers
1568 #define Op_RegX Op_RegI
1569 // For phase->intcon variants
1570 #define MakeConX intcon
1571 #define ConXNode ConINode
1572 // For array index arithmetic
1573 #define MulXNode MulINode
1574 #define AndXNode AndINode
1575 #define OrXNode OrINode
1576 #define CmpXNode CmpINode
1577 #define SubXNode SubINode
1578 #define LShiftXNode LShiftINode
1579 // For object size computation:
1580 #define AddXNode AddINode
1581 #define RShiftXNode RShiftINode
1582 // For card marks and hashcodes
1583 #define URShiftXNode URShiftINode
1584 // UseOptoBiasInlining
1585 #define XorXNode XorINode
1586 #define StoreXConditionalNode StoreIConditionalNode
1587 // Opcodes
1588 #define Op_LShiftX Op_LShiftI
1589 #define Op_AndX Op_AndI
1590 #define Op_AddX Op_AddI
1591 #define Op_SubX Op_SubI
1592 #define Op_XorX Op_XorI
1593 #define Op_URShiftX Op_URShiftI
1594 // conversions
1595 #define ConvI2X(x) (x)
1596 #define ConvL2X(x) ConvL2I(x)
1597 #define ConvX2I(x) (x)
1598 #define ConvX2L(x) ConvI2L(x)
1599
1600 #endif
1601
1602 #endif // SHARE_VM_OPTO_TYPE_HPP