1 /*
2 * Copyright (c) 1997, 2017, 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
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23 */
24
25 #ifndef SHARE_VM_OPTO_TYPE_HPP
26 #define SHARE_VM_OPTO_TYPE_HPP
27
28 #include "ci/ciValueKlass.hpp"
29 #include "opto/adlcVMDeps.hpp"
30 #include "runtime/handles.hpp"
31 #include "runtime/sharedRuntime.hpp"
32
33 // Portions of code courtesy of Clifford Click
34
35 // Optimization - Graph Style
36
37
38 // This class defines a Type lattice. The lattice is used in the constant
39 // propagation algorithms, and for some type-checking of the iloc code.
40 // Basic types include RSD's (lower bound, upper bound, stride for integers),
41 // float & double precision constants, sets of data-labels and code-labels.
42 // The complete lattice is described below. Subtypes have no relationship to
43 // up or down in the lattice; that is entirely determined by the behavior of
44 // the MEET/JOIN functions.
45
46 class Dict;
47 class Type;
48 class TypeD;
49 class TypeF;
50 class TypeInt;
51 class TypeLong;
52 class TypeNarrowPtr;
53 class TypeNarrowOop;
54 class TypeNarrowKlass;
55 class TypeAry;
56 class TypeTuple;
57 class TypeValueType;
58 class TypeVect;
59 class TypeVectS;
60 class TypeVectD;
61 class TypeVectX;
62 class TypeVectY;
63 class TypeVectZ;
64 class TypePtr;
65 class TypeRawPtr;
66 class TypeOopPtr;
67 class TypeInstPtr;
68 class TypeAryPtr;
69 class TypeKlassPtr;
70 class TypeMetadataPtr;
71
72 //------------------------------Type-------------------------------------------
73 // Basic Type object, represents a set of primitive Values.
74 // Types are hash-cons'd into a private class dictionary, so only one of each
75 // different kind of Type exists. Types are never modified after creation, so
76 // all their interesting fields are constant.
77 class Type {
78 friend class VMStructs;
79
80 public:
81 enum TYPES {
82 Bad=0, // Type check
83 Control, // Control of code (not in lattice)
84 Top, // Top of the lattice
85 Int, // Integer range (lo-hi)
86 Long, // Long integer range (lo-hi)
87 Half, // Placeholder half of doubleword
88 NarrowOop, // Compressed oop pointer
89 NarrowKlass, // Compressed klass pointer
90
91 Tuple, // Method signature or object layout
92 Array, // Array types
93 VectorS, // 32bit Vector types
94 VectorD, // 64bit Vector types
95 VectorX, // 128bit Vector types
96 VectorY, // 256bit Vector types
97 VectorZ, // 512bit Vector types
98 ValueType, // Value type
99
100 AnyPtr, // Any old raw, klass, inst, or array pointer
101 RawPtr, // Raw (non-oop) pointers
102 OopPtr, // Any and all Java heap entities
103 InstPtr, // Instance pointers (non-array objects)
104 ValueTypePtr, // Oop to heap allocated value type
105 AryPtr, // Array pointers
106 // (Ptr order matters: See is_ptr, isa_ptr, is_oopptr, isa_oopptr.)
107
108 MetadataPtr, // Generic metadata
109 KlassPtr, // Klass pointers
110
111 Function, // Function signature
112 Abio, // Abstract I/O
113 Return_Address, // Subroutine return address
114 Memory, // Abstract store
115 FloatTop, // No float value
116 FloatCon, // Floating point constant
117 FloatBot, // Any float value
118 DoubleTop, // No double value
119 DoubleCon, // Double precision constant
120 DoubleBot, // Any double value
121 Bottom, // Bottom of lattice
122 lastype // Bogus ending type (not in lattice)
123 };
124
125 // Signal values for offsets from a base pointer
126 enum OFFSET_SIGNALS {
127 OffsetTop = -2000000000, // undefined offset
128 OffsetBot = -2000000001 // any possible offset
129 };
130
131 class Offset {
132 private:
133 const int _offset;
134
135 public:
136 explicit Offset(int offset) : _offset(offset) {}
137
138 const Offset meet(const Offset other) const;
139 const Offset dual() const;
140 const Offset add(intptr_t offset) const;
141 bool operator==(const Offset& other) const {
142 return _offset == other._offset;
143 }
144 bool operator!=(const Offset& other) const {
145 return _offset != other._offset;
146 }
147 int get() const { return _offset; }
148
149 void dump2(outputStream *st) const;
150
151 static const Offset top;
152 static const Offset bottom;
153 };
154
155 // Min and max WIDEN values.
156 enum WIDEN {
157 WidenMin = 0,
158 WidenMax = 3
159 };
160
161 private:
162 typedef struct {
163 TYPES dual_type;
164 BasicType basic_type;
165 const char* msg;
166 bool isa_oop;
167 uint ideal_reg;
168 relocInfo::relocType reloc;
169 } TypeInfo;
170
171 // Dictionary of types shared among compilations.
172 static Dict* _shared_type_dict;
173 static const TypeInfo _type_info[];
174
175 static int uhash( const Type *const t );
176 // Structural equality check. Assumes that cmp() has already compared
177 // the _base types and thus knows it can cast 't' appropriately.
178 virtual bool eq( const Type *t ) const;
179
180 // Top-level hash-table of types
181 static Dict *type_dict() {
182 return Compile::current()->type_dict();
183 }
184
185 // DUAL operation: reflect around lattice centerline. Used instead of
186 // join to ensure my lattice is symmetric up and down. Dual is computed
187 // lazily, on demand, and cached in _dual.
188 const Type *_dual; // Cached dual value
189 // Table for efficient dualing of base types
190 static const TYPES dual_type[lastype];
191
192 #ifdef ASSERT
193 // One type is interface, the other is oop
194 virtual bool interface_vs_oop_helper(const Type *t) const;
195 #endif
196
197 const Type *meet_helper(const Type *t, bool include_speculative) const;
198
199 protected:
200 // Each class of type is also identified by its base.
201 const TYPES _base; // Enum of Types type
202
203 Type( TYPES t ) : _dual(NULL), _base(t) {} // Simple types
204 // ~Type(); // Use fast deallocation
205 const Type *hashcons(); // Hash-cons the type
206 virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
207 const Type *join_helper(const Type *t, bool include_speculative) const {
208 return dual()->meet_helper(t->dual(), include_speculative)->dual();
209 }
210
211 public:
212
213 inline void* operator new( size_t x ) throw() {
214 Compile* compile = Compile::current();
215 compile->set_type_last_size(x);
216 void *temp = compile->type_arena()->Amalloc_D(x);
217 compile->set_type_hwm(temp);
218 return temp;
219 }
220 inline void operator delete( void* ptr ) {
221 Compile* compile = Compile::current();
222 compile->type_arena()->Afree(ptr,compile->type_last_size());
223 }
224
225 // Initialize the type system for a particular compilation.
226 static void Initialize(Compile* compile);
227
228 // Initialize the types shared by all compilations.
229 static void Initialize_shared(Compile* compile);
230
231 TYPES base() const {
232 assert(_base > Bad && _base < lastype, "sanity");
233 return _base;
234 }
235
236 // Create a new hash-consd type
237 static const Type *make(enum TYPES);
238 // Test for equivalence of types
239 static int cmp( const Type *const t1, const Type *const t2 );
240 // Test for higher or equal in lattice
241 // Variant that drops the speculative part of the types
242 bool higher_equal(const Type *t) const {
243 return !cmp(meet(t),t->remove_speculative());
244 }
245 // Variant that keeps the speculative part of the types
246 bool higher_equal_speculative(const Type *t) const {
247 return !cmp(meet_speculative(t),t);
248 }
249
250 // MEET operation; lower in lattice.
251 // Variant that drops the speculative part of the types
252 const Type *meet(const Type *t) const {
253 return meet_helper(t, false);
254 }
255 // Variant that keeps the speculative part of the types
256 const Type *meet_speculative(const Type *t) const {
257 return meet_helper(t, true)->cleanup_speculative();
258 }
259 // WIDEN: 'widens' for Ints and other range types
260 virtual const Type *widen( const Type *old, const Type* limit ) const { return this; }
261 // NARROW: complement for widen, used by pessimistic phases
262 virtual const Type *narrow( const Type *old ) const { return this; }
263
264 // DUAL operation: reflect around lattice centerline. Used instead of
265 // join to ensure my lattice is symmetric up and down.
266 const Type *dual() const { return _dual; }
267
268 // Compute meet dependent on base type
269 virtual const Type *xmeet( const Type *t ) const;
270 virtual const Type *xdual() const; // Compute dual right now.
271
272 // JOIN operation; higher in lattice. Done by finding the dual of the
273 // meet of the dual of the 2 inputs.
274 // Variant that drops the speculative part of the types
275 const Type *join(const Type *t) const {
276 return join_helper(t, false);
277 }
278 // Variant that keeps the speculative part of the types
279 const Type *join_speculative(const Type *t) const {
280 return join_helper(t, true)->cleanup_speculative();
281 }
282
283 // Modified version of JOIN adapted to the needs Node::Value.
284 // Normalizes all empty values to TOP. Does not kill _widen bits.
285 // Currently, it also works around limitations involving interface types.
286 // Variant that drops the speculative part of the types
287 const Type *filter(const Type *kills) const {
288 return filter_helper(kills, false);
289 }
290 // Variant that keeps the speculative part of the types
291 const Type *filter_speculative(const Type *kills) const {
292 return filter_helper(kills, true)->cleanup_speculative();
293 }
294
295 #ifdef ASSERT
296 // One type is interface, the other is oop
297 virtual bool interface_vs_oop(const Type *t) const;
298 #endif
299
300 // Returns true if this pointer points at memory which contains a
301 // compressed oop references.
302 bool is_ptr_to_narrowoop() const;
303 bool is_ptr_to_narrowklass() const;
304
305 // Convenience access
306 float getf() const;
307 double getd() const;
308
309 const TypeInt *is_int() const;
310 const TypeInt *isa_int() const; // Returns NULL if not an Int
311 const TypeLong *is_long() const;
312 const TypeLong *isa_long() const; // Returns NULL if not a Long
313 const TypeD *isa_double() const; // Returns NULL if not a Double{Top,Con,Bot}
314 const TypeD *is_double_constant() const; // Asserts it is a DoubleCon
315 const TypeD *isa_double_constant() const; // Returns NULL if not a DoubleCon
316 const TypeF *isa_float() const; // Returns NULL if not a Float{Top,Con,Bot}
317 const TypeF *is_float_constant() const; // Asserts it is a FloatCon
318 const TypeF *isa_float_constant() const; // Returns NULL if not a FloatCon
319 const TypeTuple *is_tuple() const; // Collection of fields, NOT a pointer
320 const TypeAry *is_ary() const; // Array, NOT array pointer
321 const TypeVect *is_vect() const; // Vector
322 const TypeVect *isa_vect() const; // Returns NULL if not a Vector
323 const TypePtr *is_ptr() const; // Asserts it is a ptr type
324 const TypePtr *isa_ptr() const; // Returns NULL if not ptr type
325 const TypeRawPtr *isa_rawptr() const; // NOT Java oop
326 const TypeRawPtr *is_rawptr() const; // Asserts is rawptr
327 const TypeNarrowOop *is_narrowoop() const; // Java-style GC'd pointer
328 const TypeNarrowOop *isa_narrowoop() const; // Returns NULL if not oop ptr type
329 const TypeNarrowKlass *is_narrowklass() const; // compressed klass pointer
330 const TypeNarrowKlass *isa_narrowklass() const;// Returns NULL if not oop ptr type
331 const TypeOopPtr *isa_oopptr() const; // Returns NULL if not oop ptr type
332 const TypeOopPtr *is_oopptr() const; // Java-style GC'd pointer
333 const TypeInstPtr *isa_instptr() const; // Returns NULL if not InstPtr
334 const TypeInstPtr *is_instptr() const; // Instance
335 const TypeAryPtr *isa_aryptr() const; // Returns NULL if not AryPtr
336 const TypeAryPtr *is_aryptr() const; // Array oop
337 const TypeValueType* isa_valuetype() const; // Returns NULL if not Value Type
338 const TypeValueType* is_valuetype() const; // Value Type
339
340 const TypeMetadataPtr *isa_metadataptr() const; // Returns NULL if not oop ptr type
341 const TypeMetadataPtr *is_metadataptr() const; // Java-style GC'd pointer
342 const TypeKlassPtr *isa_klassptr() const; // Returns NULL if not KlassPtr
343 const TypeKlassPtr *is_klassptr() const; // assert if not KlassPtr
344
345 virtual bool is_finite() const; // Has a finite value
346 virtual bool is_nan() const; // Is not a number (NaN)
347
348 bool is_valuetypeptr() const;
349 ciValueKlass* value_klass() const;
350
351 // Returns this ptr type or the equivalent ptr type for this compressed pointer.
352 const TypePtr* make_ptr() const;
353
354 // Returns this oopptr type or the equivalent oopptr type for this compressed pointer.
355 // Asserts if the underlying type is not an oopptr or narrowoop.
356 const TypeOopPtr* make_oopptr() const;
357
358 // Returns this compressed pointer or the equivalent compressed version
359 // of this pointer type.
360 const TypeNarrowOop* make_narrowoop() const;
361
362 // Returns this compressed klass pointer or the equivalent
363 // compressed version of this pointer type.
364 const TypeNarrowKlass* make_narrowklass() const;
365
366 // Special test for register pressure heuristic
367 bool is_floatingpoint() const; // True if Float or Double base type
368
369 // Do you have memory, directly or through a tuple?
370 bool has_memory( ) const;
371
372 // TRUE if type is a singleton
373 virtual bool singleton(void) const;
374
375 // TRUE if type is above the lattice centerline, and is therefore vacuous
376 virtual bool empty(void) const;
377
378 // Return a hash for this type. The hash function is public so ConNode
379 // (constants) can hash on their constant, which is represented by a Type.
380 virtual int hash() const;
381
382 // Map ideal registers (machine types) to ideal types
383 static const Type *mreg2type[];
384
385 // Printing, statistics
386 #ifndef PRODUCT
387 void dump_on(outputStream *st) const;
388 void dump() const {
389 dump_on(tty);
390 }
391 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
392 static void dump_stats();
393
394 static const char* str(const Type* t);
395 #endif
396 void typerr(const Type *t) const; // Mixing types error
397
398 // Create basic type
399 static const Type* get_const_basic_type(BasicType type) {
400 assert((uint)type <= T_CONFLICT && _const_basic_type[type] != NULL, "bad type");
401 return _const_basic_type[type];
402 }
403
404 // For two instance arrays of same dimension, return the base element types.
405 // Otherwise or if the arrays have different dimensions, return NULL.
406 static void get_arrays_base_elements(const Type *a1, const Type *a2,
407 const TypeInstPtr **e1, const TypeInstPtr **e2);
408
409 // Mapping to the array element's basic type.
410 BasicType array_element_basic_type() const;
411
412 // Create standard type for a ciType:
413 static const Type* get_const_type(ciType* type);
414
415 // Create standard zero value:
416 static const Type* get_zero_type(BasicType type) {
417 assert((uint)type <= T_CONFLICT && _zero_type[type] != NULL, "bad type");
418 return _zero_type[type];
419 }
420
421 // Report if this is a zero value (not top).
422 bool is_zero_type() const {
423 BasicType type = basic_type();
424 if (type == T_VOID || type >= T_CONFLICT)
425 return false;
426 else
427 return (this == _zero_type[type]);
428 }
429
430 // Convenience common pre-built types.
431 static const Type *ABIO;
432 static const Type *BOTTOM;
433 static const Type *CONTROL;
434 static const Type *DOUBLE;
435 static const Type *FLOAT;
436 static const Type *HALF;
437 static const Type *MEMORY;
438 static const Type *MULTI;
439 static const Type *RETURN_ADDRESS;
440 static const Type *TOP;
441
442 // Mapping from compiler type to VM BasicType
443 BasicType basic_type() const { return _type_info[_base].basic_type; }
444 uint ideal_reg() const { return _type_info[_base].ideal_reg; }
445 const char* msg() const { return _type_info[_base].msg; }
446 bool isa_oop_ptr() const { return _type_info[_base].isa_oop; }
447 relocInfo::relocType reloc() const { return _type_info[_base].reloc; }
448
449 // Mapping from CI type system to compiler type:
450 static const Type* get_typeflow_type(ciType* type);
451
452 static const Type* make_from_constant(ciConstant constant,
453 bool require_constant = false,
454 int stable_dimension = 0,
455 bool is_narrow = false,
456 bool is_autobox_cache = false);
457
458 static const Type* make_constant_from_field(ciInstance* holder,
459 int off,
460 bool is_unsigned_load,
461 BasicType loadbt);
462
463 static const Type* make_constant_from_field(ciField* field,
464 ciInstance* holder,
465 BasicType loadbt,
466 bool is_unsigned_load);
467
468 static const Type* make_constant_from_array_element(ciArray* array,
469 int off,
470 int stable_dimension,
471 BasicType loadbt,
472 bool is_unsigned_load);
473
474 // Speculative type helper methods. See TypePtr.
475 virtual const TypePtr* speculative() const { return NULL; }
476 virtual ciKlass* speculative_type() const { return NULL; }
477 virtual ciKlass* speculative_type_not_null() const { return NULL; }
478 virtual bool speculative_maybe_null() const { return true; }
479 virtual bool speculative_always_null() const { return true; }
480 virtual const Type* remove_speculative() const { return this; }
481 virtual const Type* cleanup_speculative() const { return this; }
482 virtual bool would_improve_type(ciKlass* exact_kls, int inline_depth) const { return exact_kls != NULL; }
483 virtual bool would_improve_ptr(ProfilePtrKind ptr_kind) const { return ptr_kind == ProfileAlwaysNull || ptr_kind == ProfileNeverNull; }
484 const Type* maybe_remove_speculative(bool include_speculative) const;
485
486 virtual bool maybe_null() const { return true; }
487
488 private:
489 // support arrays
490 static const BasicType _basic_type[];
491 static const Type* _zero_type[T_CONFLICT+1];
492 static const Type* _const_basic_type[T_CONFLICT+1];
493 };
494
495 //------------------------------TypeF------------------------------------------
496 // Class of Float-Constant Types.
497 class TypeF : public Type {
498 TypeF( float f ) : Type(FloatCon), _f(f) {};
499 public:
500 virtual bool eq( const Type *t ) const;
501 virtual int hash() const; // Type specific hashing
502 virtual bool singleton(void) const; // TRUE if type is a singleton
503 virtual bool empty(void) const; // TRUE if type is vacuous
504 public:
505 const float _f; // Float constant
506
507 static const TypeF *make(float f);
508
509 virtual bool is_finite() const; // Has a finite value
510 virtual bool is_nan() const; // Is not a number (NaN)
511
512 virtual const Type *xmeet( const Type *t ) const;
513 virtual const Type *xdual() const; // Compute dual right now.
514 // Convenience common pre-built types.
515 static const TypeF *ZERO; // positive zero only
516 static const TypeF *ONE;
517 #ifndef PRODUCT
518 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
519 #endif
520 };
521
522 //------------------------------TypeD------------------------------------------
523 // Class of Double-Constant Types.
524 class TypeD : public Type {
525 TypeD( double d ) : Type(DoubleCon), _d(d) {};
526 public:
527 virtual bool eq( const Type *t ) const;
528 virtual int hash() const; // Type specific hashing
529 virtual bool singleton(void) const; // TRUE if type is a singleton
530 virtual bool empty(void) const; // TRUE if type is vacuous
531 public:
532 const double _d; // Double constant
533
534 static const TypeD *make(double d);
535
536 virtual bool is_finite() const; // Has a finite value
537 virtual bool is_nan() const; // Is not a number (NaN)
538
539 virtual const Type *xmeet( const Type *t ) const;
540 virtual const Type *xdual() const; // Compute dual right now.
541 // Convenience common pre-built types.
542 static const TypeD *ZERO; // positive zero only
543 static const TypeD *ONE;
544 #ifndef PRODUCT
545 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
546 #endif
547 };
548
549 //------------------------------TypeInt----------------------------------------
550 // Class of integer ranges, the set of integers between a lower bound and an
551 // upper bound, inclusive.
552 class TypeInt : public Type {
553 TypeInt( jint lo, jint hi, int w );
554 protected:
555 virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
556
557 public:
558 typedef jint NativeType;
559 virtual bool eq( const Type *t ) const;
560 virtual int hash() const; // Type specific hashing
561 virtual bool singleton(void) const; // TRUE if type is a singleton
562 virtual bool empty(void) const; // TRUE if type is vacuous
563 const jint _lo, _hi; // Lower bound, upper bound
564 const short _widen; // Limit on times we widen this sucker
565
566 static const TypeInt *make(jint lo);
567 // must always specify w
568 static const TypeInt *make(jint lo, jint hi, int w);
569
570 // Check for single integer
571 int is_con() const { return _lo==_hi; }
572 bool is_con(int i) const { return is_con() && _lo == i; }
573 jint get_con() const { assert( is_con(), "" ); return _lo; }
574
575 virtual bool is_finite() const; // Has a finite value
576
577 virtual const Type *xmeet( const Type *t ) const;
578 virtual const Type *xdual() const; // Compute dual right now.
579 virtual const Type *widen( const Type *t, const Type* limit_type ) const;
580 virtual const Type *narrow( const Type *t ) const;
581 // Do not kill _widen bits.
582 // Convenience common pre-built types.
583 static const TypeInt *MINUS_1;
584 static const TypeInt *ZERO;
585 static const TypeInt *ONE;
586 static const TypeInt *BOOL;
587 static const TypeInt *CC;
588 static const TypeInt *CC_LT; // [-1] == MINUS_1
589 static const TypeInt *CC_GT; // [1] == ONE
590 static const TypeInt *CC_EQ; // [0] == ZERO
591 static const TypeInt *CC_LE; // [-1,0]
592 static const TypeInt *CC_GE; // [0,1] == BOOL (!)
593 static const TypeInt *BYTE;
594 static const TypeInt *UBYTE;
595 static const TypeInt *CHAR;
596 static const TypeInt *SHORT;
597 static const TypeInt *POS;
598 static const TypeInt *POS1;
599 static const TypeInt *INT;
600 static const TypeInt *SYMINT; // symmetric range [-max_jint..max_jint]
601 static const TypeInt *TYPE_DOMAIN; // alias for TypeInt::INT
602
603 static const TypeInt *as_self(const Type *t) { return t->is_int(); }
604 #ifndef PRODUCT
605 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
606 #endif
607 };
608
609
610 //------------------------------TypeLong---------------------------------------
611 // Class of long integer ranges, the set of integers between a lower bound and
612 // an upper bound, inclusive.
613 class TypeLong : public Type {
614 TypeLong( jlong lo, jlong hi, int w );
615 protected:
616 // Do not kill _widen bits.
617 virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
618 public:
619 typedef jlong NativeType;
620 virtual bool eq( const Type *t ) const;
621 virtual int hash() const; // Type specific hashing
622 virtual bool singleton(void) const; // TRUE if type is a singleton
623 virtual bool empty(void) const; // TRUE if type is vacuous
624 public:
625 const jlong _lo, _hi; // Lower bound, upper bound
626 const short _widen; // Limit on times we widen this sucker
627
628 static const TypeLong *make(jlong lo);
629 // must always specify w
630 static const TypeLong *make(jlong lo, jlong hi, int w);
631
632 // Check for single integer
633 int is_con() const { return _lo==_hi; }
634 bool is_con(int i) const { return is_con() && _lo == i; }
635 jlong get_con() const { assert( is_con(), "" ); return _lo; }
636
637 // Check for positive 32-bit value.
638 int is_positive_int() const { return _lo >= 0 && _hi <= (jlong)max_jint; }
639
640 virtual bool is_finite() const; // Has a finite value
641
642
643 virtual const Type *xmeet( const Type *t ) const;
644 virtual const Type *xdual() const; // Compute dual right now.
645 virtual const Type *widen( const Type *t, const Type* limit_type ) const;
646 virtual const Type *narrow( const Type *t ) const;
647 // Convenience common pre-built types.
648 static const TypeLong *MINUS_1;
649 static const TypeLong *ZERO;
650 static const TypeLong *ONE;
651 static const TypeLong *POS;
652 static const TypeLong *LONG;
653 static const TypeLong *INT; // 32-bit subrange [min_jint..max_jint]
654 static const TypeLong *UINT; // 32-bit unsigned [0..max_juint]
655 static const TypeLong *TYPE_DOMAIN; // alias for TypeLong::LONG
656
657 // static convenience methods.
658 static const TypeLong *as_self(const Type *t) { return t->is_long(); }
659
660 #ifndef PRODUCT
661 virtual void dump2( Dict &d, uint, outputStream *st ) const;// Specialized per-Type dumping
662 #endif
663 };
664
665 //------------------------------TypeTuple--------------------------------------
666 // Class of Tuple Types, essentially type collections for function signatures
667 // and class layouts. It happens to also be a fast cache for the HotSpot
668 // signature types.
669 class TypeTuple : public Type {
670 TypeTuple( uint cnt, const Type **fields ) : Type(Tuple), _cnt(cnt), _fields(fields) { }
671
672 const uint _cnt; // Count of fields
673 const Type ** const _fields; // Array of field types
674
675 public:
676 virtual bool eq( const Type *t ) const;
677 virtual int hash() const; // Type specific hashing
678 virtual bool singleton(void) const; // TRUE if type is a singleton
679 virtual bool empty(void) const; // TRUE if type is vacuous
680
681 // Accessors:
682 uint cnt() const { return _cnt; }
683 const Type* field_at(uint i) const {
684 assert(i < _cnt, "oob");
685 return _fields[i];
686 }
687 void set_field_at(uint i, const Type* t) {
688 assert(i < _cnt, "oob");
689 _fields[i] = t;
690 }
691
692 static const TypeTuple *make( uint cnt, const Type **fields );
693 static const TypeTuple *make_range(ciSignature *sig, bool ret_vt_fields = false);
694 static const TypeTuple *make_range(ciType *ret_type, bool ret_vt_fields = false);
695 static const TypeTuple *make_domain(ciInstanceKlass* recv, ciSignature *sig, bool vt_fields_as_args = false);
696
697 // Subroutine call type with space allocated for argument types
698 // Memory for Control, I_O, Memory, FramePtr, and ReturnAdr is allocated implicitly
699 static const Type **fields( uint arg_cnt );
700
701 virtual const Type *xmeet( const Type *t ) const;
702 virtual const Type *xdual() const; // Compute dual right now.
703 // Convenience common pre-built types.
704 static const TypeTuple *IFBOTH;
705 static const TypeTuple *IFFALSE;
706 static const TypeTuple *IFTRUE;
707 static const TypeTuple *IFNEITHER;
708 static const TypeTuple *LOOPBODY;
709 static const TypeTuple *MEMBAR;
710 static const TypeTuple *STORECONDITIONAL;
711 static const TypeTuple *START_I2C;
712 static const TypeTuple *INT_PAIR;
713 static const TypeTuple *LONG_PAIR;
714 static const TypeTuple *INT_CC_PAIR;
715 static const TypeTuple *LONG_CC_PAIR;
716 #ifndef PRODUCT
717 virtual void dump2( Dict &d, uint, outputStream *st ) const; // Specialized per-Type dumping
718 #endif
719 };
720
721 //------------------------------TypeAry----------------------------------------
722 // Class of Array Types
723 class TypeAry : public Type {
724 TypeAry(const Type* elem, const TypeInt* size, bool stable) : Type(Array),
725 _elem(elem), _size(size), _stable(stable) {}
726 public:
727 virtual bool eq( const Type *t ) const;
728 virtual int hash() const; // Type specific hashing
729 virtual bool singleton(void) const; // TRUE if type is a singleton
730 virtual bool empty(void) const; // TRUE if type is vacuous
731
732 private:
733 const Type *_elem; // Element type of array
734 const TypeInt *_size; // Elements in array
735 const bool _stable; // Are elements @Stable?
736 friend class TypeAryPtr;
737
738 public:
739 static const TypeAry* make(const Type* elem, const TypeInt* size, bool stable = false);
740
741 virtual const Type *xmeet( const Type *t ) const;
742 virtual const Type *xdual() const; // Compute dual right now.
743 bool ary_must_be_exact() const; // true if arrays of such are never generic
744 virtual const Type* remove_speculative() const;
745 virtual const Type* cleanup_speculative() const;
746
747 bool is_value_type_array() const { return _elem->isa_valuetype() != NULL; }
748
749 #ifdef ASSERT
750 // One type is interface, the other is oop
751 virtual bool interface_vs_oop(const Type *t) const;
752 #endif
753 #ifndef PRODUCT
754 virtual void dump2( Dict &d, uint, outputStream *st ) const; // Specialized per-Type dumping
755 #endif
756 };
757
758
759 //------------------------------TypeValue---------------------------------------
760 // Class of Value Type Types
761 class TypeValueType : public Type {
762 private:
763 ciValueKlass* _vk;
764
765 protected:
766 TypeValueType(ciValueKlass* vk) : Type(ValueType) { _vk = vk; }
767
768 public:
769 static const TypeValueType* make(ciValueKlass* vk);
770 ciValueKlass* value_klass() const { return _vk; }
771
772 virtual bool eq(const Type* t) const;
773 virtual int hash() const; // Type specific hashing
774 virtual bool singleton(void) const; // TRUE if type is a singleton
775 virtual bool empty(void) const; // TRUE if type is vacuous
776
777 virtual const Type* xmeet(const Type* t) const;
778 virtual const Type* xdual() const; // Compute dual right now.
779
780 #ifndef PRODUCT
781 virtual void dump2(Dict &d, uint, outputStream* st) const; // Specialized per-Type dumping
782 #endif
783 };
784
785 //------------------------------TypeVect---------------------------------------
786 // Class of Vector Types
787 class TypeVect : public Type {
788 const Type* _elem; // Vector's element type
789 const uint _length; // Elements in vector (power of 2)
790
791 protected:
792 TypeVect(TYPES t, const Type* elem, uint length) : Type(t),
793 _elem(elem), _length(length) {}
794
795 public:
796 const Type* element_type() const { return _elem; }
797 BasicType element_basic_type() const { return _elem->array_element_basic_type(); }
798 uint length() const { return _length; }
799 uint length_in_bytes() const {
800 return _length * type2aelembytes(element_basic_type());
801 }
802
803 virtual bool eq(const Type *t) const;
804 virtual int hash() const; // Type specific hashing
805 virtual bool singleton(void) const; // TRUE if type is a singleton
806 virtual bool empty(void) const; // TRUE if type is vacuous
807
808 static const TypeVect *make(const BasicType elem_bt, uint length) {
809 // Use bottom primitive type.
810 return make(get_const_basic_type(elem_bt), length);
811 }
812 // Used directly by Replicate nodes to construct singleton vector.
813 static const TypeVect *make(const Type* elem, uint length);
814
815 virtual const Type *xmeet( const Type *t) const;
816 virtual const Type *xdual() const; // Compute dual right now.
817
818 static const TypeVect *VECTS;
819 static const TypeVect *VECTD;
820 static const TypeVect *VECTX;
821 static const TypeVect *VECTY;
822 static const TypeVect *VECTZ;
823
824 #ifndef PRODUCT
825 virtual void dump2(Dict &d, uint, outputStream *st) const; // Specialized per-Type dumping
826 #endif
827 };
828
829 class TypeVectS : public TypeVect {
830 friend class TypeVect;
831 TypeVectS(const Type* elem, uint length) : TypeVect(VectorS, elem, length) {}
832 };
833
834 class TypeVectD : public TypeVect {
835 friend class TypeVect;
836 TypeVectD(const Type* elem, uint length) : TypeVect(VectorD, elem, length) {}
837 };
838
839 class TypeVectX : public TypeVect {
840 friend class TypeVect;
841 TypeVectX(const Type* elem, uint length) : TypeVect(VectorX, elem, length) {}
842 };
843
844 class TypeVectY : public TypeVect {
845 friend class TypeVect;
846 TypeVectY(const Type* elem, uint length) : TypeVect(VectorY, elem, length) {}
847 };
848
849 class TypeVectZ : public TypeVect {
850 friend class TypeVect;
851 TypeVectZ(const Type* elem, uint length) : TypeVect(VectorZ, elem, length) {}
852 };
853
854 //------------------------------TypePtr----------------------------------------
855 // Class of machine Pointer Types: raw data, instances or arrays.
856 // If the _base enum is AnyPtr, then this refers to all of the above.
857 // Otherwise the _base will indicate which subset of pointers is affected,
858 // and the class will be inherited from.
859 class TypePtr : public Type {
860 friend class TypeNarrowPtr;
861 public:
862 enum PTR { TopPTR, AnyNull, Constant, Null, NotNull, BotPTR, lastPTR };
863 protected:
864 TypePtr(TYPES t, PTR ptr, Offset offset,
865 const TypePtr* speculative = NULL,
866 int inline_depth = InlineDepthBottom) :
867 Type(t), _ptr(ptr), _offset(offset), _speculative(speculative),
868 _inline_depth(inline_depth) {}
869 static const PTR ptr_meet[lastPTR][lastPTR];
870 static const PTR ptr_dual[lastPTR];
871 static const char * const ptr_msg[lastPTR];
872
873 enum {
874 InlineDepthBottom = INT_MAX,
875 InlineDepthTop = -InlineDepthBottom
876 };
877
878 // Extra type information profiling gave us. We propagate it the
879 // same way the rest of the type info is propagated. If we want to
880 // use it, then we have to emit a guard: this part of the type is
881 // not something we know but something we speculate about the type.
882 const TypePtr* _speculative;
883 // For speculative types, we record at what inlining depth the
884 // profiling point that provided the data is. We want to favor
885 // profile data coming from outer scopes which are likely better for
886 // the current compilation.
887 int _inline_depth;
888
889 // utility methods to work on the speculative part of the type
890 const TypePtr* dual_speculative() const;
891 const TypePtr* xmeet_speculative(const TypePtr* other) const;
892 bool eq_speculative(const TypePtr* other) const;
893 int hash_speculative() const;
894 const TypePtr* add_offset_speculative(intptr_t offset) const;
895 #ifndef PRODUCT
896 void dump_speculative(outputStream *st) const;
897 #endif
898
899 // utility methods to work on the inline depth of the type
900 int dual_inline_depth() const;
901 int meet_inline_depth(int depth) const;
902 #ifndef PRODUCT
903 void dump_inline_depth(outputStream *st) const;
904 #endif
905
906 public:
907 const Offset _offset; // Offset into oop, with TOP & BOT
908 const PTR _ptr; // Pointer equivalence class
909
910 const int offset() const { return _offset.get(); }
911 const PTR ptr() const { return _ptr; }
912
913 static const TypePtr* make(TYPES t, PTR ptr, Offset offset,
914 const TypePtr* speculative = NULL,
915 int inline_depth = InlineDepthBottom);
916
917 // Return a 'ptr' version of this type
918 virtual const Type *cast_to_ptr_type(PTR ptr) const;
919
920 virtual intptr_t get_con() const;
921
922 Offset xadd_offset(intptr_t offset) const;
923 virtual const TypePtr *add_offset( intptr_t offset ) const;
924 virtual const int flattened_offset() const { return offset(); }
925
926 virtual bool eq(const Type *t) const;
927 virtual int hash() const; // Type specific hashing
928
929 virtual bool singleton(void) const; // TRUE if type is a singleton
930 virtual bool empty(void) const; // TRUE if type is vacuous
931 virtual const Type *xmeet( const Type *t ) const;
932 virtual const Type *xmeet_helper( const Type *t ) const;
933 Offset meet_offset(int offset) const;
934 Offset dual_offset() const;
935 virtual const Type *xdual() const; // Compute dual right now.
936
937 // meet, dual and join over pointer equivalence sets
938 PTR meet_ptr( const PTR in_ptr ) const { return ptr_meet[in_ptr][ptr()]; }
939 PTR dual_ptr() const { return ptr_dual[ptr()]; }
940
941 // This is textually confusing unless one recalls that
942 // join(t) == dual()->meet(t->dual())->dual().
943 PTR join_ptr( const PTR in_ptr ) const {
944 return ptr_dual[ ptr_meet[ ptr_dual[in_ptr] ] [ dual_ptr() ] ];
945 }
946
947 // Speculative type helper methods.
948 virtual const TypePtr* speculative() const { return _speculative; }
949 int inline_depth() const { return _inline_depth; }
950 virtual ciKlass* speculative_type() const;
951 virtual ciKlass* speculative_type_not_null() const;
952 virtual bool speculative_maybe_null() const;
953 virtual bool speculative_always_null() const;
954 virtual const Type* remove_speculative() const;
955 virtual const Type* cleanup_speculative() const;
956 virtual bool would_improve_type(ciKlass* exact_kls, int inline_depth) const;
957 virtual bool would_improve_ptr(ProfilePtrKind maybe_null) const;
958 virtual const TypePtr* with_inline_depth(int depth) const;
959
960 virtual bool maybe_null() const { return meet_ptr(Null) == ptr(); }
961
962 // Tests for relation to centerline of type lattice:
963 static bool above_centerline(PTR ptr) { return (ptr <= AnyNull); }
964 static bool below_centerline(PTR ptr) { return (ptr >= NotNull); }
965 // Convenience common pre-built types.
966 static const TypePtr *NULL_PTR;
967 static const TypePtr *NOTNULL;
968 static const TypePtr *BOTTOM;
969 #ifndef PRODUCT
970 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
971 #endif
972 };
973
974 //------------------------------TypeRawPtr-------------------------------------
975 // Class of raw pointers, pointers to things other than Oops. Examples
976 // include the stack pointer, top of heap, card-marking area, handles, etc.
977 class TypeRawPtr : public TypePtr {
978 protected:
979 TypeRawPtr(PTR ptr, address bits) : TypePtr(RawPtr,ptr,Offset(0)), _bits(bits){}
980 public:
981 virtual bool eq( const Type *t ) const;
982 virtual int hash() const; // Type specific hashing
983
984 const address _bits; // Constant value, if applicable
985
986 static const TypeRawPtr *make( PTR ptr );
987 static const TypeRawPtr *make( address bits );
988
989 // Return a 'ptr' version of this type
990 virtual const Type *cast_to_ptr_type(PTR ptr) const;
991
992 virtual intptr_t get_con() const;
993
994 virtual const TypePtr *add_offset( intptr_t offset ) const;
995
996 virtual const Type *xmeet( const Type *t ) const;
997 virtual const Type *xdual() const; // Compute dual right now.
998 // Convenience common pre-built types.
999 static const TypeRawPtr *BOTTOM;
1000 static const TypeRawPtr *NOTNULL;
1001 #ifndef PRODUCT
1002 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
1003 #endif
1004 };
1005
1006 //------------------------------TypeOopPtr-------------------------------------
1007 // Some kind of oop (Java pointer), either instance or array.
1008 class TypeOopPtr : public TypePtr {
1009 protected:
1010 TypeOopPtr(TYPES t, PTR ptr, ciKlass* k, bool xk, ciObject* o, Offset offset, Offset field_offset,
1011 int instance_id, const TypePtr* speculative, int inline_depth);
1012 public:
1013 virtual bool eq( const Type *t ) const;
1014 virtual int hash() const; // Type specific hashing
1015 virtual bool singleton(void) const; // TRUE if type is a singleton
1016 enum {
1017 InstanceTop = -1, // undefined instance
1018 InstanceBot = 0 // any possible instance
1019 };
1020 protected:
1021
1022 // Oop is NULL, unless this is a constant oop.
1023 ciObject* _const_oop; // Constant oop
1024 // If _klass is NULL, then so is _sig. This is an unloaded klass.
1025 ciKlass* _klass; // Klass object
1026 // Does the type exclude subclasses of the klass? (Inexact == polymorphic.)
1027 bool _klass_is_exact;
1028 bool _is_ptr_to_narrowoop;
1029 bool _is_ptr_to_narrowklass;
1030 bool _is_ptr_to_boxed_value;
1031
1032 // If not InstanceTop or InstanceBot, indicates that this is
1033 // a particular instance of this type which is distinct.
1034 // This is the node index of the allocation node creating this instance.
1035 int _instance_id;
1036
1037 static const TypeOopPtr* make_from_klass_common(ciKlass* klass, bool klass_change, bool try_for_exact);
1038
1039 int dual_instance_id() const;
1040 int meet_instance_id(int uid) const;
1041
1042 // Do not allow interface-vs.-noninterface joins to collapse to top.
1043 virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
1044
1045 public:
1046 // Creates a type given a klass. Correctly handles multi-dimensional arrays
1047 // Respects UseUniqueSubclasses.
1048 // If the klass is final, the resulting type will be exact.
1049 static const TypeOopPtr* make_from_klass(ciKlass* klass) {
1050 return make_from_klass_common(klass, true, false);
1051 }
1052 // Same as before, but will produce an exact type, even if
1053 // the klass is not final, as long as it has exactly one implementation.
1054 static const TypeOopPtr* make_from_klass_unique(ciKlass* klass) {
1055 return make_from_klass_common(klass, true, true);
1056 }
1057 // Same as before, but does not respects UseUniqueSubclasses.
1058 // Use this only for creating array element types.
1059 static const TypeOopPtr* make_from_klass_raw(ciKlass* klass) {
1060 return make_from_klass_common(klass, false, false);
1061 }
1062 // Creates a singleton type given an object.
1063 // If the object cannot be rendered as a constant,
1064 // may return a non-singleton type.
1065 // If require_constant, produce a NULL if a singleton is not possible.
1066 static const TypeOopPtr* make_from_constant(ciObject* o,
1067 bool require_constant = false);
1068
1069 // Make a generic (unclassed) pointer to an oop.
1070 static const TypeOopPtr* make(PTR ptr, Offset offset, int instance_id,
1071 const TypePtr* speculative = NULL,
1072 int inline_depth = InlineDepthBottom);
1073
1074 ciObject* const_oop() const { return _const_oop; }
1075 virtual ciKlass* klass() const { return _klass; }
1076 bool klass_is_exact() const { return _klass_is_exact; }
1077
1078 // Returns true if this pointer points at memory which contains a
1079 // compressed oop references.
1080 bool is_ptr_to_narrowoop_nv() const { return _is_ptr_to_narrowoop; }
1081 bool is_ptr_to_narrowklass_nv() const { return _is_ptr_to_narrowklass; }
1082 bool is_ptr_to_boxed_value() const { return _is_ptr_to_boxed_value; }
1083 bool is_known_instance() const { return _instance_id > 0; }
1084 int instance_id() const { return _instance_id; }
1085 bool is_known_instance_field() const { return is_known_instance() && _offset.get() >= 0; }
1086
1087 bool can_be_value_type() const { return EnableValhalla && (_klass->is_valuetype() || _klass->is_java_lang_Object() || _klass->is_interface()); }
1088
1089 virtual intptr_t get_con() const;
1090
1091 virtual const Type *cast_to_ptr_type(PTR ptr) const;
1092
1093 virtual const Type *cast_to_exactness(bool klass_is_exact) const;
1094
1095 virtual const TypeOopPtr *cast_to_instance_id(int instance_id) const;
1096
1097 // corresponding pointer to klass, for a given instance
1098 const TypeKlassPtr* as_klass_type() const;
1099
1100 virtual const TypePtr *add_offset( intptr_t offset ) const;
1101
1102 // Speculative type helper methods.
1103 virtual const Type* remove_speculative() const;
1104 virtual const Type* cleanup_speculative() const;
1105 virtual bool would_improve_type(ciKlass* exact_kls, int inline_depth) const;
1106 virtual const TypePtr* with_inline_depth(int depth) const;
1107
1108 virtual const Type *xdual() const; // Compute dual right now.
1109 // the core of the computation of the meet for TypeOopPtr and for its subclasses
1110 virtual const Type *xmeet_helper(const Type *t) const;
1111
1112 // Convenience common pre-built type.
1113 static const TypeOopPtr *BOTTOM;
1114 #ifndef PRODUCT
1115 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
1116 #endif
1117 };
1118
1119 //------------------------------TypeInstPtr------------------------------------
1120 // Class of Java object pointers, pointing either to non-array Java instances
1121 // or to a Klass* (including array klasses).
1122 class TypeInstPtr : public TypeOopPtr {
1123 TypeInstPtr(PTR ptr, ciKlass* k, bool xk, ciObject* o, Offset offset, int instance_id,
1124 const TypePtr* speculative, int inline_depth);
1125 virtual bool eq( const Type *t ) const;
1126 virtual int hash() const; // Type specific hashing
1127
1128 ciSymbol* _name; // class name
1129
1130 public:
1131 ciSymbol* name() const { return _name; }
1132
1133 bool is_loaded() const { return _klass->is_loaded(); }
1134
1135 // Make a pointer to a constant oop.
1136 static const TypeInstPtr *make(ciObject* o) {
1137 return make(TypePtr::Constant, o->klass(), true, o, Offset(0), InstanceBot);
1138 }
1139 // Make a pointer to a constant oop with offset.
1140 static const TypeInstPtr* make(ciObject* o, Offset offset) {
1141 return make(TypePtr::Constant, o->klass(), true, o, offset, InstanceBot);
1142 }
1143
1144 // Make a pointer to some value of type klass.
1145 static const TypeInstPtr *make(PTR ptr, ciKlass* klass) {
1146 return make(ptr, klass, false, NULL, Offset(0), InstanceBot);
1147 }
1148
1149 // Make a pointer to some non-polymorphic value of exactly type klass.
1150 static const TypeInstPtr *make_exact(PTR ptr, ciKlass* klass) {
1151 return make(ptr, klass, true, NULL, Offset(0), InstanceBot);
1152 }
1153
1154 // Make a pointer to some value of type klass with offset.
1155 static const TypeInstPtr *make(PTR ptr, ciKlass* klass, Offset offset) {
1156 return make(ptr, klass, false, NULL, offset, InstanceBot);
1157 }
1158
1159 // Make a pointer to an oop.
1160 static const TypeInstPtr* make(PTR ptr, ciKlass* k, bool xk, ciObject* o, Offset offset,
1161 int instance_id = InstanceBot,
1162 const TypePtr* speculative = NULL,
1163 int inline_depth = InlineDepthBottom);
1164
1165 /** Create constant type for a constant boxed value */
1166 const Type* get_const_boxed_value() const;
1167
1168 // If this is a java.lang.Class constant, return the type for it or NULL.
1169 // Pass to Type::get_const_type to turn it to a type, which will usually
1170 // be a TypeInstPtr, but may also be a TypeInt::INT for int.class, etc.
1171 ciType* java_mirror_type() const;
1172
1173 virtual const Type *cast_to_ptr_type(PTR ptr) const;
1174
1175 virtual const Type *cast_to_exactness(bool klass_is_exact) const;
1176
1177 virtual const TypeOopPtr *cast_to_instance_id(int instance_id) const;
1178
1179 virtual const TypePtr *add_offset( intptr_t offset ) const;
1180
1181 // Speculative type helper methods.
1182 virtual const Type* remove_speculative() const;
1183 virtual const TypePtr* with_inline_depth(int depth) const;
1184
1185 // the core of the computation of the meet of 2 types
1186 virtual const Type *xmeet_helper(const Type *t) const;
1187 virtual const TypeInstPtr *xmeet_unloaded( const TypeInstPtr *t ) const;
1188 virtual const Type *xdual() const; // Compute dual right now.
1189
1190 // Convenience common pre-built types.
1191 static const TypeInstPtr *NOTNULL;
1192 static const TypeInstPtr *BOTTOM;
1193 static const TypeInstPtr *MIRROR;
1194 static const TypeInstPtr *MARK;
1195 static const TypeInstPtr *KLASS;
1196 #ifndef PRODUCT
1197 virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
1198 #endif
1199 };
1200
1201 //------------------------------TypeAryPtr-------------------------------------
1202 // Class of Java array pointers
1203 class TypeAryPtr : public TypeOopPtr {
1204 TypeAryPtr(PTR ptr, ciObject* o, const TypeAry *ary, ciKlass* k, bool xk,
1205 Offset offset, Offset field_offset, int instance_id, bool is_autobox_cache,
1206 const TypePtr* speculative, int inline_depth)
1207 : TypeOopPtr(AryPtr, ptr, k, xk, o, offset, field_offset, instance_id, speculative, inline_depth),
1208 _ary(ary),
1209 _is_autobox_cache(is_autobox_cache),
1210 _field_offset(field_offset)
1211 {
1212 #ifdef ASSERT
1213 if (k != NULL) {
1214 // Verify that specified klass and TypeAryPtr::klass() follow the same rules.
1215 ciKlass* ck = compute_klass(true);
1216 if (k != ck) {
1217 this->dump(); tty->cr();
1218 tty->print(" k: ");
1219 k->print(); tty->cr();
1220 tty->print("ck: ");
1221 if (ck != NULL) ck->print();
1222 else tty->print("<NULL>");
1223 tty->cr();
1224 assert(false, "unexpected TypeAryPtr::_klass");
1225 }
1226 }
1227 #endif
1228 }
1229 virtual bool eq( const Type *t ) const;
1230 virtual int hash() const; // Type specific hashing
1231 const TypeAry *_ary; // Array we point into
1232 const bool _is_autobox_cache;
1233 // For flattened value type arrays, each field of the value type in
1234 // the array has its own memory slice so we need to keep track of
1235 // which field is accessed
1236 const Offset _field_offset;
1237 Offset meet_field_offset(const Type::Offset offset) const;
1238 Offset dual_field_offset() const;
1239
1240 ciKlass* compute_klass(DEBUG_ONLY(bool verify = false)) const;
1241
1242 public:
1243 // Accessors
1244 ciKlass* klass() const;
1245 const TypeAry* ary() const { return _ary; }
1246 const Type* elem() const { return _ary->_elem; }
1247 const TypeInt* size() const { return _ary->_size; }
1248 bool is_stable() const { return _ary->_stable; }
1249
1250 bool is_autobox_cache() const { return _is_autobox_cache; }
1251
1252 static const TypeAryPtr* make(PTR ptr, const TypeAry *ary, ciKlass* k, bool xk, Offset offset,
1253 Offset field_offset = Offset::bottom,
1254 int instance_id = InstanceBot,
1255 const TypePtr* speculative = NULL,
1256 int inline_depth = InlineDepthBottom);
1257 // Constant pointer to array
1258 static const TypeAryPtr* make(PTR ptr, ciObject* o, const TypeAry *ary, ciKlass* k, bool xk, Offset offset,
1259 Offset field_offset = Offset::bottom,
1260 int instance_id = InstanceBot,
1261 const TypePtr* speculative = NULL,
1262 int inline_depth = InlineDepthBottom,
1263 bool is_autobox_cache = false);
1264
1265 // Return a 'ptr' version of this type
1266 virtual const Type *cast_to_ptr_type(PTR ptr) const;
1267
1268 virtual const Type *cast_to_exactness(bool klass_is_exact) const;
1269
1270 virtual const TypeOopPtr *cast_to_instance_id(int instance_id) const;
1271
1272 virtual const TypeAryPtr* cast_to_size(const TypeInt* size) const;
1273 virtual const TypeInt* narrow_size_type(const TypeInt* size) const;
1274
1275 virtual bool empty(void) const; // TRUE if type is vacuous
1276 virtual const TypePtr *add_offset( intptr_t offset ) const;
1277
1278 // Speculative type helper methods.
1279 virtual const Type* remove_speculative() const;
1280 virtual const TypePtr* with_inline_depth(int depth) const;
1281
1282 // the core of the computation of the meet of 2 types
1283 virtual const Type *xmeet_helper(const Type *t) const;
1284 virtual const Type *xdual() const; // Compute dual right now.
1285
1286 const TypeAryPtr* cast_to_stable(bool stable, int stable_dimension = 1) const;
1287 int stable_dimension() const;
1288
1289 const TypeAryPtr* cast_to_autobox_cache(bool cache) const;
1290
1291 const int flattened_offset() const;
1292 const Offset field_offset() const { return _field_offset; }
1293 const TypeAryPtr* with_field_offset(int offset) const;
1294 const TypePtr* add_field_offset_and_offset(intptr_t offset) const;
1295
1296 // Convenience common pre-built types.
1297 static const TypeAryPtr *RANGE;
1298 static const TypeAryPtr *OOPS;
1299 static const TypeAryPtr *NARROWOOPS;
1300 static const TypeAryPtr *BYTES;
1301 static const TypeAryPtr *SHORTS;
1302 static const TypeAryPtr *CHARS;
1303 static const TypeAryPtr *INTS;
1304 static const TypeAryPtr *LONGS;
1305 static const TypeAryPtr *FLOATS;
1306 static const TypeAryPtr *DOUBLES;
1307 // selects one of the above:
1308 static const TypeAryPtr *get_array_body_type(BasicType elem) {
1309 assert((uint)elem <= T_CONFLICT && _array_body_type[elem] != NULL, "bad elem type");
1310 return _array_body_type[elem];
1311 }
1312 static const TypeAryPtr *_array_body_type[T_CONFLICT+1];
1313 // sharpen the type of an int which is used as an array size
1314 #ifdef ASSERT
1315 // One type is interface, the other is oop
1316 virtual bool interface_vs_oop(const Type *t) const;
1317 #endif
1318 #ifndef PRODUCT
1319 virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
1320 #endif
1321 };
1322
1323 //------------------------------TypeMetadataPtr-------------------------------------
1324 // Some kind of metadata, either Method*, MethodData* or CPCacheOop
1325 class TypeMetadataPtr : public TypePtr {
1326 protected:
1327 TypeMetadataPtr(PTR ptr, ciMetadata* metadata, Offset offset);
1328 // Do not allow interface-vs.-noninterface joins to collapse to top.
1329 virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
1330 public:
1331 virtual bool eq( const Type *t ) const;
1332 virtual int hash() const; // Type specific hashing
1333 virtual bool singleton(void) const; // TRUE if type is a singleton
1334
1335 private:
1336 ciMetadata* _metadata;
1337
1338 public:
1339 static const TypeMetadataPtr* make(PTR ptr, ciMetadata* m, Offset offset);
1340
1341 static const TypeMetadataPtr* make(ciMethod* m);
1342 static const TypeMetadataPtr* make(ciMethodData* m);
1343
1344 ciMetadata* metadata() const { return _metadata; }
1345
1346 virtual const Type *cast_to_ptr_type(PTR ptr) const;
1347
1348 virtual const TypePtr *add_offset( intptr_t offset ) const;
1349
1350 virtual const Type *xmeet( const Type *t ) const;
1351 virtual const Type *xdual() const; // Compute dual right now.
1352
1353 virtual intptr_t get_con() const;
1354
1355 // Convenience common pre-built types.
1356 static const TypeMetadataPtr *BOTTOM;
1357
1358 #ifndef PRODUCT
1359 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
1360 #endif
1361 };
1362
1363 //------------------------------TypeKlassPtr-----------------------------------
1364 // Class of Java Klass pointers
1365 class TypeKlassPtr : public TypePtr {
1366 TypeKlassPtr(PTR ptr, ciKlass* klass, Offset offset);
1367
1368 protected:
1369 virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
1370 public:
1371 virtual bool eq( const Type *t ) const;
1372 virtual int hash() const; // Type specific hashing
1373 virtual bool singleton(void) const; // TRUE if type is a singleton
1374 private:
1375
1376 ciKlass* _klass;
1377
1378 // Does the type exclude subclasses of the klass? (Inexact == polymorphic.)
1379 bool _klass_is_exact;
1380
1381 public:
1382 ciKlass* klass() const { return _klass; }
1383 bool klass_is_exact() const { return _klass_is_exact; }
1384
1385 bool is_loaded() const { return klass() != NULL && klass()->is_loaded(); }
1386
1387 // ptr to klass 'k'
1388 static const TypeKlassPtr* make(ciKlass* k) { return make( TypePtr::Constant, k, Offset(0)); }
1389 // ptr to klass 'k' with offset
1390 static const TypeKlassPtr* make(ciKlass* k, Offset offset) { return make( TypePtr::Constant, k, offset); }
1391 // ptr to klass 'k' or sub-klass
1392 static const TypeKlassPtr* make(PTR ptr, ciKlass* k, Offset offset);
1393
1394 virtual const Type *cast_to_ptr_type(PTR ptr) const;
1395
1396 virtual const Type *cast_to_exactness(bool klass_is_exact) const;
1397
1398 // corresponding pointer to instance, for a given class
1399 const TypeOopPtr* as_instance_type() const;
1400
1401 virtual const TypePtr *add_offset( intptr_t offset ) const;
1402 virtual const Type *xmeet( const Type *t ) const;
1403 virtual const Type *xdual() const; // Compute dual right now.
1404
1405 virtual intptr_t get_con() const;
1406
1407 // Convenience common pre-built types.
1408 static const TypeKlassPtr* OBJECT; // Not-null object klass or below
1409 static const TypeKlassPtr* OBJECT_OR_NULL; // Maybe-null version of same
1410 static const TypeKlassPtr* BOTTOM;
1411 #ifndef PRODUCT
1412 virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
1413 #endif
1414 };
1415
1416 class TypeNarrowPtr : public Type {
1417 protected:
1418 const TypePtr* _ptrtype; // Could be TypePtr::NULL_PTR
1419
1420 TypeNarrowPtr(TYPES t, const TypePtr* ptrtype): _ptrtype(ptrtype),
1421 Type(t) {
1422 assert(ptrtype->offset() == 0 ||
1423 ptrtype->offset() == OffsetBot ||
1424 ptrtype->offset() == OffsetTop, "no real offsets");
1425 }
1426
1427 virtual const TypeNarrowPtr *isa_same_narrowptr(const Type *t) const = 0;
1428 virtual const TypeNarrowPtr *is_same_narrowptr(const Type *t) const = 0;
1429 virtual const TypeNarrowPtr *make_same_narrowptr(const TypePtr *t) const = 0;
1430 virtual const TypeNarrowPtr *make_hash_same_narrowptr(const TypePtr *t) const = 0;
1431 // Do not allow interface-vs.-noninterface joins to collapse to top.
1432 virtual const Type *filter_helper(const Type *kills, bool include_speculative) const;
1433 public:
1434 virtual bool eq( const Type *t ) const;
1435 virtual int hash() const; // Type specific hashing
1436 virtual bool singleton(void) const; // TRUE if type is a singleton
1437
1438 virtual const Type *xmeet( const Type *t ) const;
1439 virtual const Type *xdual() const; // Compute dual right now.
1440
1441 virtual intptr_t get_con() const;
1442
1443 virtual bool empty(void) const; // TRUE if type is vacuous
1444
1445 // returns the equivalent ptr type for this compressed pointer
1446 const TypePtr *get_ptrtype() const {
1447 return _ptrtype;
1448 }
1449
1450 #ifndef PRODUCT
1451 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
1452 #endif
1453 };
1454
1455 //------------------------------TypeNarrowOop----------------------------------
1456 // A compressed reference to some kind of Oop. This type wraps around
1457 // a preexisting TypeOopPtr and forwards most of it's operations to
1458 // the underlying type. It's only real purpose is to track the
1459 // oopness of the compressed oop value when we expose the conversion
1460 // between the normal and the compressed form.
1461 class TypeNarrowOop : public TypeNarrowPtr {
1462 protected:
1463 TypeNarrowOop( const TypePtr* ptrtype): TypeNarrowPtr(NarrowOop, ptrtype) {
1464 }
1465
1466 virtual const TypeNarrowPtr *isa_same_narrowptr(const Type *t) const {
1467 return t->isa_narrowoop();
1468 }
1469
1470 virtual const TypeNarrowPtr *is_same_narrowptr(const Type *t) const {
1471 return t->is_narrowoop();
1472 }
1473
1474 virtual const TypeNarrowPtr *make_same_narrowptr(const TypePtr *t) const {
1475 return new TypeNarrowOop(t);
1476 }
1477
1478 virtual const TypeNarrowPtr *make_hash_same_narrowptr(const TypePtr *t) const {
1479 return (const TypeNarrowPtr*)((new TypeNarrowOop(t))->hashcons());
1480 }
1481
1482 public:
1483
1484 static const TypeNarrowOop *make( const TypePtr* type);
1485
1486 static const TypeNarrowOop* make_from_constant(ciObject* con, bool require_constant = false) {
1487 return make(TypeOopPtr::make_from_constant(con, require_constant));
1488 }
1489
1490 static const TypeNarrowOop *BOTTOM;
1491 static const TypeNarrowOop *NULL_PTR;
1492
1493 virtual const Type* remove_speculative() const;
1494 virtual const Type* cleanup_speculative() const;
1495
1496 #ifndef PRODUCT
1497 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
1498 #endif
1499 };
1500
1501 //------------------------------TypeNarrowKlass----------------------------------
1502 // A compressed reference to klass pointer. This type wraps around a
1503 // preexisting TypeKlassPtr and forwards most of it's operations to
1504 // the underlying type.
1505 class TypeNarrowKlass : public TypeNarrowPtr {
1506 protected:
1507 TypeNarrowKlass( const TypePtr* ptrtype): TypeNarrowPtr(NarrowKlass, ptrtype) {
1508 }
1509
1510 virtual const TypeNarrowPtr *isa_same_narrowptr(const Type *t) const {
1511 return t->isa_narrowklass();
1512 }
1513
1514 virtual const TypeNarrowPtr *is_same_narrowptr(const Type *t) const {
1515 return t->is_narrowklass();
1516 }
1517
1518 virtual const TypeNarrowPtr *make_same_narrowptr(const TypePtr *t) const {
1519 return new TypeNarrowKlass(t);
1520 }
1521
1522 virtual const TypeNarrowPtr *make_hash_same_narrowptr(const TypePtr *t) const {
1523 return (const TypeNarrowPtr*)((new TypeNarrowKlass(t))->hashcons());
1524 }
1525
1526 public:
1527 static const TypeNarrowKlass *make( const TypePtr* type);
1528
1529 // static const TypeNarrowKlass *BOTTOM;
1530 static const TypeNarrowKlass *NULL_PTR;
1531
1532 #ifndef PRODUCT
1533 virtual void dump2( Dict &d, uint depth, outputStream *st ) const;
1534 #endif
1535 };
1536
1537 //------------------------------TypeFunc---------------------------------------
1538 // Class of Array Types
1539 class TypeFunc : public Type {
1540 TypeFunc(const TypeTuple *domain_sig, const TypeTuple *domain_cc, const TypeTuple *range_sig, const TypeTuple *range_cc)
1541 : Type(Function), _domain_sig(domain_sig), _domain_cc(domain_cc), _range_sig(range_sig), _range_cc(range_cc) {}
1542 virtual bool eq( const Type *t ) const;
1543 virtual int hash() const; // Type specific hashing
1544 virtual bool singleton(void) const; // TRUE if type is a singleton
1545 virtual bool empty(void) const; // TRUE if type is vacuous
1546
1547 // Domains of inputs: value type arguments are not passed by
1548 // reference, instead each field of the value type is passed as an
1549 // argument. We maintain 2 views of the argument list here: one
1550 // based on the signature (with a value type argument as a single
1551 // slot), one based on the actual calling convention (with a value
1552 // type argument as a list of its fields).
1553 const TypeTuple* const _domain_sig;
1554 const TypeTuple* const _domain_cc;
1555 // Range of results. Similar to domains: a value type result can be
1556 // returned in registers in which case range_cc lists all fields and
1557 // is the actual calling convention.
1558 const TypeTuple* const _range_sig;
1559 const TypeTuple* const _range_cc;
1560
1561 public:
1562 // Constants are shared among ADLC and VM
1563 enum { Control = AdlcVMDeps::Control,
1564 I_O = AdlcVMDeps::I_O,
1565 Memory = AdlcVMDeps::Memory,
1566 FramePtr = AdlcVMDeps::FramePtr,
1567 ReturnAdr = AdlcVMDeps::ReturnAdr,
1568 Parms = AdlcVMDeps::Parms
1569 };
1570
1571
1572 // Accessors:
1573 const TypeTuple* domain_sig() const { return _domain_sig; }
1574 const TypeTuple* domain_cc() const { return _domain_cc; }
1575 const TypeTuple* range_sig() const { return _range_sig; }
1576 const TypeTuple* range_cc() const { return _range_cc; }
1577
1578 static const TypeFunc *make(ciMethod* method);
1579 static const TypeFunc *make(ciSignature signature, const Type* extra);
1580 static const TypeFunc *make(const TypeTuple* domain_sig, const TypeTuple* domain_cc,
1581 const TypeTuple* range_sig, const TypeTuple* range_cc);
1582 static const TypeFunc *make(const TypeTuple* domain, const TypeTuple* range);
1583
1584 virtual const Type *xmeet( const Type *t ) const;
1585 virtual const Type *xdual() const; // Compute dual right now.
1586
1587 BasicType return_type() const;
1588
1589 bool returns_value_type_as_fields() const { return range_sig() != range_cc(); }
1590
1591 #ifndef PRODUCT
1592 virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping
1593 #endif
1594 // Convenience common pre-built types.
1595 };
1596
1597 //------------------------------accessors--------------------------------------
1598 inline bool Type::is_ptr_to_narrowoop() const {
1599 #ifdef _LP64
1600 return (isa_oopptr() != NULL && is_oopptr()->is_ptr_to_narrowoop_nv());
1601 #else
1602 return false;
1603 #endif
1604 }
1605
1606 inline bool Type::is_ptr_to_narrowklass() const {
1607 #ifdef _LP64
1608 return (isa_oopptr() != NULL && is_oopptr()->is_ptr_to_narrowklass_nv());
1609 #else
1610 return false;
1611 #endif
1612 }
1613
1614 inline float Type::getf() const {
1615 assert( _base == FloatCon, "Not a FloatCon" );
1616 return ((TypeF*)this)->_f;
1617 }
1618
1619 inline double Type::getd() const {
1620 assert( _base == DoubleCon, "Not a DoubleCon" );
1621 return ((TypeD*)this)->_d;
1622 }
1623
1624 inline const TypeInt *Type::is_int() const {
1625 assert( _base == Int, "Not an Int" );
1626 return (TypeInt*)this;
1627 }
1628
1629 inline const TypeInt *Type::isa_int() const {
1630 return ( _base == Int ? (TypeInt*)this : NULL);
1631 }
1632
1633 inline const TypeLong *Type::is_long() const {
1634 assert( _base == Long, "Not a Long" );
1635 return (TypeLong*)this;
1636 }
1637
1638 inline const TypeLong *Type::isa_long() const {
1639 return ( _base == Long ? (TypeLong*)this : NULL);
1640 }
1641
1642 inline const TypeF *Type::isa_float() const {
1643 return ((_base == FloatTop ||
1644 _base == FloatCon ||
1645 _base == FloatBot) ? (TypeF*)this : NULL);
1646 }
1647
1648 inline const TypeF *Type::is_float_constant() const {
1649 assert( _base == FloatCon, "Not a Float" );
1650 return (TypeF*)this;
1651 }
1652
1653 inline const TypeF *Type::isa_float_constant() const {
1654 return ( _base == FloatCon ? (TypeF*)this : NULL);
1655 }
1656
1657 inline const TypeD *Type::isa_double() const {
1658 return ((_base == DoubleTop ||
1659 _base == DoubleCon ||
1660 _base == DoubleBot) ? (TypeD*)this : NULL);
1661 }
1662
1663 inline const TypeD *Type::is_double_constant() const {
1664 assert( _base == DoubleCon, "Not a Double" );
1665 return (TypeD*)this;
1666 }
1667
1668 inline const TypeD *Type::isa_double_constant() const {
1669 return ( _base == DoubleCon ? (TypeD*)this : NULL);
1670 }
1671
1672 inline const TypeTuple *Type::is_tuple() const {
1673 assert( _base == Tuple, "Not a Tuple" );
1674 return (TypeTuple*)this;
1675 }
1676
1677 inline const TypeAry *Type::is_ary() const {
1678 assert( _base == Array , "Not an Array" );
1679 return (TypeAry*)this;
1680 }
1681
1682 inline const TypeVect *Type::is_vect() const {
1683 assert( _base >= VectorS && _base <= VectorZ, "Not a Vector" );
1684 return (TypeVect*)this;
1685 }
1686
1687 inline const TypeVect *Type::isa_vect() const {
1688 return (_base >= VectorS && _base <= VectorZ) ? (TypeVect*)this : NULL;
1689 }
1690
1691 inline const TypePtr *Type::is_ptr() const {
1692 // AnyPtr is the first Ptr and KlassPtr the last, with no non-ptrs between.
1693 assert(_base >= AnyPtr && _base <= KlassPtr, "Not a pointer");
1694 return (TypePtr*)this;
1695 }
1696
1697 inline const TypePtr *Type::isa_ptr() const {
1698 // AnyPtr is the first Ptr and KlassPtr the last, with no non-ptrs between.
1699 return (_base >= AnyPtr && _base <= KlassPtr) ? (TypePtr*)this : NULL;
1700 }
1701
1702 inline const TypeOopPtr *Type::is_oopptr() const {
1703 // OopPtr is the first and KlassPtr the last, with no non-oops between.
1704 assert(_base >= OopPtr && _base <= AryPtr, "Not a Java pointer" ) ;
1705 return (TypeOopPtr*)this;
1706 }
1707
1708 inline const TypeOopPtr *Type::isa_oopptr() const {
1709 // OopPtr is the first and KlassPtr the last, with no non-oops between.
1710 return (_base >= OopPtr && _base <= AryPtr) ? (TypeOopPtr*)this : NULL;
1711 }
1712
1713 inline const TypeRawPtr *Type::isa_rawptr() const {
1714 return (_base == RawPtr) ? (TypeRawPtr*)this : NULL;
1715 }
1716
1717 inline const TypeRawPtr *Type::is_rawptr() const {
1718 assert( _base == RawPtr, "Not a raw pointer" );
1719 return (TypeRawPtr*)this;
1720 }
1721
1722 inline const TypeInstPtr *Type::isa_instptr() const {
1723 return (_base == InstPtr) ? (TypeInstPtr*)this : NULL;
1724 }
1725
1726 inline const TypeInstPtr *Type::is_instptr() const {
1727 assert( _base == InstPtr, "Not an object pointer" );
1728 return (TypeInstPtr*)this;
1729 }
1730
1731 inline const TypeAryPtr *Type::isa_aryptr() const {
1732 return (_base == AryPtr) ? (TypeAryPtr*)this : NULL;
1733 }
1734
1735 inline const TypeAryPtr *Type::is_aryptr() const {
1736 assert( _base == AryPtr, "Not an array pointer" );
1737 return (TypeAryPtr*)this;
1738 }
1739
1740 inline const TypeValueType* Type::isa_valuetype() const {
1741 return (_base == ValueType) ? (TypeValueType*)this : NULL;
1742 }
1743
1744 inline const TypeValueType* Type::is_valuetype() const {
1745 assert(_base == ValueType, "Not a value type");
1746 return (TypeValueType*)this;
1747 }
1748
1749 inline const TypeNarrowOop *Type::is_narrowoop() const {
1750 // OopPtr is the first and KlassPtr the last, with no non-oops between.
1751 assert(_base == NarrowOop, "Not a narrow oop" ) ;
1752 return (TypeNarrowOop*)this;
1753 }
1754
1755 inline const TypeNarrowOop *Type::isa_narrowoop() const {
1756 // OopPtr is the first and KlassPtr the last, with no non-oops between.
1757 return (_base == NarrowOop) ? (TypeNarrowOop*)this : NULL;
1758 }
1759
1760 inline const TypeNarrowKlass *Type::is_narrowklass() const {
1761 assert(_base == NarrowKlass, "Not a narrow oop" ) ;
1762 return (TypeNarrowKlass*)this;
1763 }
1764
1765 inline const TypeNarrowKlass *Type::isa_narrowklass() const {
1766 return (_base == NarrowKlass) ? (TypeNarrowKlass*)this : NULL;
1767 }
1768
1769 inline const TypeMetadataPtr *Type::is_metadataptr() const {
1770 // MetadataPtr is the first and CPCachePtr the last
1771 assert(_base == MetadataPtr, "Not a metadata pointer" ) ;
1772 return (TypeMetadataPtr*)this;
1773 }
1774
1775 inline const TypeMetadataPtr *Type::isa_metadataptr() const {
1776 return (_base == MetadataPtr) ? (TypeMetadataPtr*)this : NULL;
1777 }
1778
1779 inline const TypeKlassPtr *Type::isa_klassptr() const {
1780 return (_base == KlassPtr) ? (TypeKlassPtr*)this : NULL;
1781 }
1782
1783 inline const TypeKlassPtr *Type::is_klassptr() const {
1784 assert( _base == KlassPtr, "Not a klass pointer" );
1785 return (TypeKlassPtr*)this;
1786 }
1787
1788 inline const TypePtr* Type::make_ptr() const {
1789 return (_base == NarrowOop) ? is_narrowoop()->get_ptrtype() :
1790 ((_base == NarrowKlass) ? is_narrowklass()->get_ptrtype() :
1791 isa_ptr());
1792 }
1793
1794 inline const TypeOopPtr* Type::make_oopptr() const {
1795 return (_base == NarrowOop) ? is_narrowoop()->get_ptrtype()->isa_oopptr() : isa_oopptr();
1796 }
1797
1798 inline const TypeNarrowOop* Type::make_narrowoop() const {
1799 return (_base == NarrowOop) ? is_narrowoop() :
1800 (isa_ptr() ? TypeNarrowOop::make(is_ptr()) : NULL);
1801 }
1802
1803 inline const TypeNarrowKlass* Type::make_narrowklass() const {
1804 return (_base == NarrowKlass) ? is_narrowklass() :
1805 (isa_ptr() ? TypeNarrowKlass::make(is_ptr()) : NULL);
1806 }
1807
1808 inline bool Type::is_floatingpoint() const {
1809 if( (_base == FloatCon) || (_base == FloatBot) ||
1810 (_base == DoubleCon) || (_base == DoubleBot) )
1811 return true;
1812 return false;
1813 }
1814
1815 inline bool Type::is_valuetypeptr() const {
1816 return isa_instptr() != NULL && is_instptr()->klass()->is_valuetype();
1817 }
1818
1819
1820 inline ciValueKlass* Type::value_klass() const {
1821 assert(is_valuetypeptr(), "must be a value type ptr");
1822 return is_instptr()->klass()->as_value_klass();
1823 }
1824
1825
1826 // ===============================================================
1827 // Things that need to be 64-bits in the 64-bit build but
1828 // 32-bits in the 32-bit build. Done this way to get full
1829 // optimization AND strong typing.
1830 #ifdef _LP64
1831
1832 // For type queries and asserts
1833 #define is_intptr_t is_long
1834 #define isa_intptr_t isa_long
1835 #define find_intptr_t_type find_long_type
1836 #define find_intptr_t_con find_long_con
1837 #define TypeX TypeLong
1838 #define Type_X Type::Long
1839 #define TypeX_X TypeLong::LONG
1840 #define TypeX_ZERO TypeLong::ZERO
1841 // For 'ideal_reg' machine registers
1842 #define Op_RegX Op_RegL
1843 // For phase->intcon variants
1844 #define MakeConX longcon
1845 #define ConXNode ConLNode
1846 // For array index arithmetic
1847 #define MulXNode MulLNode
1848 #define AndXNode AndLNode
1849 #define OrXNode OrLNode
1850 #define CmpXNode CmpLNode
1851 #define CmpUXNode CmpULNode
1852 #define SubXNode SubLNode
1853 #define LShiftXNode LShiftLNode
1854 // For object size computation:
1855 #define AddXNode AddLNode
1856 #define RShiftXNode RShiftLNode
1857 // For card marks and hashcodes
1858 #define URShiftXNode URShiftLNode
1859 // UseOptoBiasInlining
1860 #define XorXNode XorLNode
1861 #define StoreXConditionalNode StoreLConditionalNode
1862 // Opcodes
1863 #define Op_LShiftX Op_LShiftL
1864 #define Op_AndX Op_AndL
1865 #define Op_AddX Op_AddL
1866 #define Op_SubX Op_SubL
1867 #define Op_XorX Op_XorL
1868 #define Op_URShiftX Op_URShiftL
1869 // conversions
1870 #define ConvI2X(x) ConvI2L(x)
1871 #define ConvL2X(x) (x)
1872 #define ConvX2I(x) ConvL2I(x)
1873 #define ConvX2L(x) (x)
1874 #define ConvX2UL(x) (x)
1875
1876 #else
1877
1878 // For type queries and asserts
1879 #define is_intptr_t is_int
1880 #define isa_intptr_t isa_int
1881 #define find_intptr_t_type find_int_type
1882 #define find_intptr_t_con find_int_con
1883 #define TypeX TypeInt
1884 #define Type_X Type::Int
1885 #define TypeX_X TypeInt::INT
1886 #define TypeX_ZERO TypeInt::ZERO
1887 // For 'ideal_reg' machine registers
1888 #define Op_RegX Op_RegI
1889 // For phase->intcon variants
1890 #define MakeConX intcon
1891 #define ConXNode ConINode
1892 // For array index arithmetic
1893 #define MulXNode MulINode
1894 #define AndXNode AndINode
1895 #define OrXNode OrINode
1896 #define CmpXNode CmpINode
1897 #define CmpUXNode CmpUNode
1898 #define SubXNode SubINode
1899 #define LShiftXNode LShiftINode
1900 // For object size computation:
1901 #define AddXNode AddINode
1902 #define RShiftXNode RShiftINode
1903 // For card marks and hashcodes
1904 #define URShiftXNode URShiftINode
1905 // UseOptoBiasInlining
1906 #define XorXNode XorINode
1907 #define StoreXConditionalNode StoreIConditionalNode
1908 // Opcodes
1909 #define Op_LShiftX Op_LShiftI
1910 #define Op_AndX Op_AndI
1911 #define Op_AddX Op_AddI
1912 #define Op_SubX Op_SubI
1913 #define Op_XorX Op_XorI
1914 #define Op_URShiftX Op_URShiftI
1915 // conversions
1916 #define ConvI2X(x) (x)
1917 #define ConvL2X(x) ConvL2I(x)
1918 #define ConvX2I(x) (x)
1919 #define ConvX2L(x) ConvI2L(x)
1920 #define ConvX2UL(x) ConvI2UL(x)
1921
1922 #endif
1923
1924 #endif // SHARE_VM_OPTO_TYPE_HPP