Mercurial > hg > truffle
annotate src/share/vm/opto/type.hpp @ 6823:859c45fb8cea
7201026: add vector for shift count
Summary: Add generation of vectors for scalar shift count.
Reviewed-by: roland, twisti, dlong
author | kvn |
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date | Tue, 02 Oct 2012 12:25:13 -0700 |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 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 | |
0 | 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; | |
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51 class TypeNarrowOop; |
0 | 52 class TypeAry; |
53 class TypeTuple; | |
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54 class TypeVect; |
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55 class TypeVectS; |
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56 class TypeVectD; |
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57 class TypeVectX; |
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58 class TypeVectY; |
0 | 59 class TypePtr; |
60 class TypeRawPtr; | |
61 class TypeOopPtr; | |
62 class TypeInstPtr; | |
63 class TypeAryPtr; | |
64 class TypeKlassPtr; | |
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65 class TypeMetadataPtr; |
0 | 66 |
67 //------------------------------Type------------------------------------------- | |
68 // Basic Type object, represents a set of primitive Values. | |
69 // Types are hash-cons'd into a private class dictionary, so only one of each | |
70 // different kind of Type exists. Types are never modified after creation, so | |
71 // all their interesting fields are constant. | |
72 class Type { | |
3939 | 73 friend class VMStructs; |
74 | |
0 | 75 public: |
76 enum TYPES { | |
77 Bad=0, // Type check | |
78 Control, // Control of code (not in lattice) | |
79 Top, // Top of the lattice | |
80 Int, // Integer range (lo-hi) | |
81 Long, // Long integer range (lo-hi) | |
82 Half, // Placeholder half of doubleword | |
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83 NarrowOop, // Compressed oop pointer |
0 | 84 |
85 Tuple, // Method signature or object layout | |
86 Array, // Array types | |
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87 VectorS, // 32bit Vector types |
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88 VectorD, // 64bit Vector types |
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89 VectorX, // 128bit Vector types |
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90 VectorY, // 256bit Vector types |
0 | 91 |
92 AnyPtr, // Any old raw, klass, inst, or array pointer | |
93 RawPtr, // Raw (non-oop) pointers | |
94 OopPtr, // Any and all Java heap entities | |
95 InstPtr, // Instance pointers (non-array objects) | |
96 AryPtr, // Array pointers | |
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97 // (Ptr order matters: See is_ptr, isa_ptr, is_oopptr, isa_oopptr.) |
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98 |
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99 MetadataPtr, // Generic metadata |
0 | 100 KlassPtr, // Klass pointers |
101 | |
102 Function, // Function signature | |
103 Abio, // Abstract I/O | |
104 Return_Address, // Subroutine return address | |
105 Memory, // Abstract store | |
106 FloatTop, // No float value | |
107 FloatCon, // Floating point constant | |
108 FloatBot, // Any float value | |
109 DoubleTop, // No double value | |
110 DoubleCon, // Double precision constant | |
111 DoubleBot, // Any double value | |
112 Bottom, // Bottom of lattice | |
113 lastype // Bogus ending type (not in lattice) | |
114 }; | |
115 | |
116 // Signal values for offsets from a base pointer | |
117 enum OFFSET_SIGNALS { | |
118 OffsetTop = -2000000000, // undefined offset | |
119 OffsetBot = -2000000001 // any possible offset | |
120 }; | |
121 | |
122 // Min and max WIDEN values. | |
123 enum WIDEN { | |
124 WidenMin = 0, | |
125 WidenMax = 3 | |
126 }; | |
127 | |
128 private: | |
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129 typedef struct { |
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130 const TYPES dual_type; |
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131 const BasicType basic_type; |
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132 const char* msg; |
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133 const bool isa_oop; |
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134 const int ideal_reg; |
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135 const relocInfo::relocType reloc; |
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136 } TypeInfo; |
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137 |
0 | 138 // Dictionary of types shared among compilations. |
139 static Dict* _shared_type_dict; | |
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140 static TypeInfo _type_info[]; |
0 | 141 |
142 static int uhash( const Type *const t ); | |
143 // Structural equality check. Assumes that cmp() has already compared | |
144 // the _base types and thus knows it can cast 't' appropriately. | |
145 virtual bool eq( const Type *t ) const; | |
146 | |
147 // Top-level hash-table of types | |
148 static Dict *type_dict() { | |
149 return Compile::current()->type_dict(); | |
150 } | |
151 | |
152 // DUAL operation: reflect around lattice centerline. Used instead of | |
153 // join to ensure my lattice is symmetric up and down. Dual is computed | |
154 // lazily, on demand, and cached in _dual. | |
155 const Type *_dual; // Cached dual value | |
156 // Table for efficient dualing of base types | |
157 static const TYPES dual_type[lastype]; | |
158 | |
159 protected: | |
160 // Each class of type is also identified by its base. | |
161 const TYPES _base; // Enum of Types type | |
162 | |
163 Type( TYPES t ) : _dual(NULL), _base(t) {} // Simple types | |
164 // ~Type(); // Use fast deallocation | |
165 const Type *hashcons(); // Hash-cons the type | |
166 | |
167 public: | |
168 | |
169 inline void* operator new( size_t x ) { | |
170 Compile* compile = Compile::current(); | |
171 compile->set_type_last_size(x); | |
172 void *temp = compile->type_arena()->Amalloc_D(x); | |
173 compile->set_type_hwm(temp); | |
174 return temp; | |
175 } | |
176 inline void operator delete( void* ptr ) { | |
177 Compile* compile = Compile::current(); | |
178 compile->type_arena()->Afree(ptr,compile->type_last_size()); | |
179 } | |
180 | |
181 // Initialize the type system for a particular compilation. | |
182 static void Initialize(Compile* compile); | |
183 | |
184 // Initialize the types shared by all compilations. | |
185 static void Initialize_shared(Compile* compile); | |
186 | |
187 TYPES base() const { | |
188 assert(_base > Bad && _base < lastype, "sanity"); | |
189 return _base; | |
190 } | |
191 | |
192 // Create a new hash-consd type | |
193 static const Type *make(enum TYPES); | |
194 // Test for equivalence of types | |
195 static int cmp( const Type *const t1, const Type *const t2 ); | |
196 // Test for higher or equal in lattice | |
197 int higher_equal( const Type *t ) const { return !cmp(meet(t),t); } | |
198 | |
199 // MEET operation; lower in lattice. | |
200 const Type *meet( const Type *t ) const; | |
201 // WIDEN: 'widens' for Ints and other range types | |
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202 virtual const Type *widen( const Type *old, const Type* limit ) const { return this; } |
0 | 203 // NARROW: complement for widen, used by pessimistic phases |
204 virtual const Type *narrow( const Type *old ) const { return this; } | |
205 | |
206 // DUAL operation: reflect around lattice centerline. Used instead of | |
207 // join to ensure my lattice is symmetric up and down. | |
208 const Type *dual() const { return _dual; } | |
209 | |
210 // Compute meet dependent on base type | |
211 virtual const Type *xmeet( const Type *t ) const; | |
212 virtual const Type *xdual() const; // Compute dual right now. | |
213 | |
214 // JOIN operation; higher in lattice. Done by finding the dual of the | |
215 // meet of the dual of the 2 inputs. | |
216 const Type *join( const Type *t ) const { | |
217 return dual()->meet(t->dual())->dual(); } | |
218 | |
219 // Modified version of JOIN adapted to the needs Node::Value. | |
220 // Normalizes all empty values to TOP. Does not kill _widen bits. | |
221 // Currently, it also works around limitations involving interface types. | |
222 virtual const Type *filter( const Type *kills ) const; | |
223 | |
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224 #ifdef ASSERT |
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225 // One type is interface, the other is oop |
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226 virtual bool interface_vs_oop(const Type *t) const; |
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227 #endif |
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228 |
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229 // Returns true if this pointer points at memory which contains a |
163 | 230 // compressed oop references. |
231 bool is_ptr_to_narrowoop() const; | |
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232 |
0 | 233 // Convenience access |
234 float getf() const; | |
235 double getd() const; | |
236 | |
237 const TypeInt *is_int() const; | |
238 const TypeInt *isa_int() const; // Returns NULL if not an Int | |
239 const TypeLong *is_long() const; | |
240 const TypeLong *isa_long() const; // Returns NULL if not a Long | |
241 const TypeD *is_double_constant() const; // Asserts it is a DoubleCon | |
242 const TypeD *isa_double_constant() const; // Returns NULL if not a DoubleCon | |
243 const TypeF *is_float_constant() const; // Asserts it is a FloatCon | |
244 const TypeF *isa_float_constant() const; // Returns NULL if not a FloatCon | |
245 const TypeTuple *is_tuple() const; // Collection of fields, NOT a pointer | |
246 const TypeAry *is_ary() const; // Array, NOT array pointer | |
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247 const TypeVect *is_vect() const; // Vector |
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248 const TypeVect *isa_vect() const; // Returns NULL if not a Vector |
0 | 249 const TypePtr *is_ptr() const; // Asserts it is a ptr type |
250 const TypePtr *isa_ptr() const; // Returns NULL if not ptr type | |
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251 const TypeRawPtr *isa_rawptr() const; // NOT Java oop |
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252 const TypeRawPtr *is_rawptr() const; // Asserts is rawptr |
163 | 253 const TypeNarrowOop *is_narrowoop() const; // Java-style GC'd pointer |
254 const TypeNarrowOop *isa_narrowoop() const; // Returns NULL if not oop ptr type | |
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255 const TypeOopPtr *isa_oopptr() const; // Returns NULL if not oop ptr type |
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256 const TypeOopPtr *is_oopptr() const; // Java-style GC'd pointer |
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257 const TypeInstPtr *isa_instptr() const; // Returns NULL if not InstPtr |
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258 const TypeInstPtr *is_instptr() const; // Instance |
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259 const TypeAryPtr *isa_aryptr() const; // Returns NULL if not AryPtr |
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260 const TypeAryPtr *is_aryptr() const; // Array oop |
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261 |
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262 const TypeMetadataPtr *isa_metadataptr() const; // Returns NULL if not oop ptr type |
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263 const TypeMetadataPtr *is_metadataptr() const; // Java-style GC'd pointer |
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264 const TypeKlassPtr *isa_klassptr() const; // Returns NULL if not KlassPtr |
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265 const TypeKlassPtr *is_klassptr() const; // assert if not KlassPtr |
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266 |
0 | 267 virtual bool is_finite() const; // Has a finite value |
268 virtual bool is_nan() const; // Is not a number (NaN) | |
269 | |
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270 // Returns this ptr type or the equivalent ptr type for this compressed pointer. |
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271 const TypePtr* make_ptr() const; |
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272 |
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273 // Returns this oopptr type or the equivalent oopptr type for this compressed pointer. |
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274 // Asserts if the underlying type is not an oopptr or narrowoop. |
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275 const TypeOopPtr* make_oopptr() const; |
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276 |
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277 // Returns this compressed pointer or the equivalent compressed version |
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278 // of this pointer type. |
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279 const TypeNarrowOop* make_narrowoop() const; |
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280 |
0 | 281 // Special test for register pressure heuristic |
282 bool is_floatingpoint() const; // True if Float or Double base type | |
283 | |
284 // Do you have memory, directly or through a tuple? | |
285 bool has_memory( ) const; | |
286 | |
287 // TRUE if type is a singleton | |
288 virtual bool singleton(void) const; | |
289 | |
290 // TRUE if type is above the lattice centerline, and is therefore vacuous | |
291 virtual bool empty(void) const; | |
292 | |
293 // Return a hash for this type. The hash function is public so ConNode | |
294 // (constants) can hash on their constant, which is represented by a Type. | |
295 virtual int hash() const; | |
296 | |
297 // Map ideal registers (machine types) to ideal types | |
298 static const Type *mreg2type[]; | |
299 | |
300 // Printing, statistics | |
301 #ifndef PRODUCT | |
302 void dump_on(outputStream *st) const; | |
303 void dump() const { | |
304 dump_on(tty); | |
305 } | |
306 virtual void dump2( Dict &d, uint depth, outputStream *st ) const; | |
307 static void dump_stats(); | |
308 #endif | |
309 void typerr(const Type *t) const; // Mixing types error | |
310 | |
311 // Create basic type | |
312 static const Type* get_const_basic_type(BasicType type) { | |
313 assert((uint)type <= T_CONFLICT && _const_basic_type[type] != NULL, "bad type"); | |
314 return _const_basic_type[type]; | |
315 } | |
316 | |
317 // Mapping to the array element's basic type. | |
318 BasicType array_element_basic_type() const; | |
319 | |
320 // Create standard type for a ciType: | |
321 static const Type* get_const_type(ciType* type); | |
322 | |
323 // Create standard zero value: | |
324 static const Type* get_zero_type(BasicType type) { | |
325 assert((uint)type <= T_CONFLICT && _zero_type[type] != NULL, "bad type"); | |
326 return _zero_type[type]; | |
327 } | |
328 | |
329 // Report if this is a zero value (not top). | |
330 bool is_zero_type() const { | |
331 BasicType type = basic_type(); | |
332 if (type == T_VOID || type >= T_CONFLICT) | |
333 return false; | |
334 else | |
335 return (this == _zero_type[type]); | |
336 } | |
337 | |
338 // Convenience common pre-built types. | |
339 static const Type *ABIO; | |
340 static const Type *BOTTOM; | |
341 static const Type *CONTROL; | |
342 static const Type *DOUBLE; | |
343 static const Type *FLOAT; | |
344 static const Type *HALF; | |
345 static const Type *MEMORY; | |
346 static const Type *MULTI; | |
347 static const Type *RETURN_ADDRESS; | |
348 static const Type *TOP; | |
349 | |
350 // Mapping from compiler type to VM BasicType | |
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351 BasicType basic_type() const { return _type_info[_base].basic_type; } |
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352 int ideal_reg() const { return _type_info[_base].ideal_reg; } |
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353 const char* msg() const { return _type_info[_base].msg; } |
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354 bool isa_oop_ptr() const { return _type_info[_base].isa_oop; } |
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355 relocInfo::relocType reloc() const { return _type_info[_base].reloc; } |
0 | 356 |
357 // Mapping from CI type system to compiler type: | |
358 static const Type* get_typeflow_type(ciType* type); | |
359 | |
360 private: | |
361 // support arrays | |
362 static const BasicType _basic_type[]; | |
363 static const Type* _zero_type[T_CONFLICT+1]; | |
364 static const Type* _const_basic_type[T_CONFLICT+1]; | |
365 }; | |
366 | |
367 //------------------------------TypeF------------------------------------------ | |
368 // Class of Float-Constant Types. | |
369 class TypeF : public Type { | |
370 TypeF( float f ) : Type(FloatCon), _f(f) {}; | |
371 public: | |
372 virtual bool eq( const Type *t ) const; | |
373 virtual int hash() const; // Type specific hashing | |
374 virtual bool singleton(void) const; // TRUE if type is a singleton | |
375 virtual bool empty(void) const; // TRUE if type is vacuous | |
376 public: | |
377 const float _f; // Float constant | |
378 | |
379 static const TypeF *make(float f); | |
380 | |
381 virtual bool is_finite() const; // Has a finite value | |
382 virtual bool is_nan() const; // Is not a number (NaN) | |
383 | |
384 virtual const Type *xmeet( const Type *t ) const; | |
385 virtual const Type *xdual() const; // Compute dual right now. | |
386 // Convenience common pre-built types. | |
387 static const TypeF *ZERO; // positive zero only | |
388 static const TypeF *ONE; | |
389 #ifndef PRODUCT | |
390 virtual void dump2( Dict &d, uint depth, outputStream *st ) const; | |
391 #endif | |
392 }; | |
393 | |
394 //------------------------------TypeD------------------------------------------ | |
395 // Class of Double-Constant Types. | |
396 class TypeD : public Type { | |
397 TypeD( double d ) : Type(DoubleCon), _d(d) {}; | |
398 public: | |
399 virtual bool eq( const Type *t ) const; | |
400 virtual int hash() const; // Type specific hashing | |
401 virtual bool singleton(void) const; // TRUE if type is a singleton | |
402 virtual bool empty(void) const; // TRUE if type is vacuous | |
403 public: | |
404 const double _d; // Double constant | |
405 | |
406 static const TypeD *make(double d); | |
407 | |
408 virtual bool is_finite() const; // Has a finite value | |
409 virtual bool is_nan() const; // Is not a number (NaN) | |
410 | |
411 virtual const Type *xmeet( const Type *t ) const; | |
412 virtual const Type *xdual() const; // Compute dual right now. | |
413 // Convenience common pre-built types. | |
414 static const TypeD *ZERO; // positive zero only | |
415 static const TypeD *ONE; | |
416 #ifndef PRODUCT | |
417 virtual void dump2( Dict &d, uint depth, outputStream *st ) const; | |
418 #endif | |
419 }; | |
420 | |
421 //------------------------------TypeInt---------------------------------------- | |
422 // Class of integer ranges, the set of integers between a lower bound and an | |
423 // upper bound, inclusive. | |
424 class TypeInt : public Type { | |
425 TypeInt( jint lo, jint hi, int w ); | |
426 public: | |
427 virtual bool eq( const Type *t ) const; | |
428 virtual int hash() const; // Type specific hashing | |
429 virtual bool singleton(void) const; // TRUE if type is a singleton | |
430 virtual bool empty(void) const; // TRUE if type is vacuous | |
431 public: | |
432 const jint _lo, _hi; // Lower bound, upper bound | |
433 const short _widen; // Limit on times we widen this sucker | |
434 | |
435 static const TypeInt *make(jint lo); | |
436 // must always specify w | |
437 static const TypeInt *make(jint lo, jint hi, int w); | |
438 | |
439 // Check for single integer | |
440 int is_con() const { return _lo==_hi; } | |
441 bool is_con(int i) const { return is_con() && _lo == i; } | |
442 jint get_con() const { assert( is_con(), "" ); return _lo; } | |
443 | |
444 virtual bool is_finite() const; // Has a finite value | |
445 | |
446 virtual const Type *xmeet( const Type *t ) const; | |
447 virtual const Type *xdual() const; // Compute dual right now. | |
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448 virtual const Type *widen( const Type *t, const Type* limit_type ) const; |
0 | 449 virtual const Type *narrow( const Type *t ) const; |
450 // Do not kill _widen bits. | |
451 virtual const Type *filter( const Type *kills ) const; | |
452 // Convenience common pre-built types. | |
453 static const TypeInt *MINUS_1; | |
454 static const TypeInt *ZERO; | |
455 static const TypeInt *ONE; | |
456 static const TypeInt *BOOL; | |
457 static const TypeInt *CC; | |
458 static const TypeInt *CC_LT; // [-1] == MINUS_1 | |
459 static const TypeInt *CC_GT; // [1] == ONE | |
460 static const TypeInt *CC_EQ; // [0] == ZERO | |
461 static const TypeInt *CC_LE; // [-1,0] | |
462 static const TypeInt *CC_GE; // [0,1] == BOOL (!) | |
463 static const TypeInt *BYTE; | |
624 | 464 static const TypeInt *UBYTE; |
0 | 465 static const TypeInt *CHAR; |
466 static const TypeInt *SHORT; | |
467 static const TypeInt *POS; | |
468 static const TypeInt *POS1; | |
469 static const TypeInt *INT; | |
470 static const TypeInt *SYMINT; // symmetric range [-max_jint..max_jint] | |
471 #ifndef PRODUCT | |
472 virtual void dump2( Dict &d, uint depth, outputStream *st ) const; | |
473 #endif | |
474 }; | |
475 | |
476 | |
477 //------------------------------TypeLong--------------------------------------- | |
478 // Class of long integer ranges, the set of integers between a lower bound and | |
479 // an upper bound, inclusive. | |
480 class TypeLong : public Type { | |
481 TypeLong( jlong lo, jlong hi, int w ); | |
482 public: | |
483 virtual bool eq( const Type *t ) const; | |
484 virtual int hash() const; // Type specific hashing | |
485 virtual bool singleton(void) const; // TRUE if type is a singleton | |
486 virtual bool empty(void) const; // TRUE if type is vacuous | |
487 public: | |
488 const jlong _lo, _hi; // Lower bound, upper bound | |
489 const short _widen; // Limit on times we widen this sucker | |
490 | |
491 static const TypeLong *make(jlong lo); | |
492 // must always specify w | |
493 static const TypeLong *make(jlong lo, jlong hi, int w); | |
494 | |
495 // Check for single integer | |
496 int is_con() const { return _lo==_hi; } | |
145 | 497 bool is_con(int i) const { return is_con() && _lo == i; } |
0 | 498 jlong get_con() const { assert( is_con(), "" ); return _lo; } |
499 | |
500 virtual bool is_finite() const; // Has a finite value | |
501 | |
502 virtual const Type *xmeet( const Type *t ) const; | |
503 virtual const Type *xdual() const; // Compute dual right now. | |
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504 virtual const Type *widen( const Type *t, const Type* limit_type ) const; |
0 | 505 virtual const Type *narrow( const Type *t ) const; |
506 // Do not kill _widen bits. | |
507 virtual const Type *filter( const Type *kills ) const; | |
508 // Convenience common pre-built types. | |
509 static const TypeLong *MINUS_1; | |
510 static const TypeLong *ZERO; | |
511 static const TypeLong *ONE; | |
512 static const TypeLong *POS; | |
513 static const TypeLong *LONG; | |
514 static const TypeLong *INT; // 32-bit subrange [min_jint..max_jint] | |
515 static const TypeLong *UINT; // 32-bit unsigned [0..max_juint] | |
516 #ifndef PRODUCT | |
517 virtual void dump2( Dict &d, uint, outputStream *st ) const;// Specialized per-Type dumping | |
518 #endif | |
519 }; | |
520 | |
521 //------------------------------TypeTuple-------------------------------------- | |
522 // Class of Tuple Types, essentially type collections for function signatures | |
523 // and class layouts. It happens to also be a fast cache for the HotSpot | |
524 // signature types. | |
525 class TypeTuple : public Type { | |
526 TypeTuple( uint cnt, const Type **fields ) : Type(Tuple), _cnt(cnt), _fields(fields) { } | |
527 public: | |
528 virtual bool eq( const Type *t ) const; | |
529 virtual int hash() const; // Type specific hashing | |
530 virtual bool singleton(void) const; // TRUE if type is a singleton | |
531 virtual bool empty(void) const; // TRUE if type is vacuous | |
532 | |
533 public: | |
534 const uint _cnt; // Count of fields | |
535 const Type ** const _fields; // Array of field types | |
536 | |
537 // Accessors: | |
538 uint cnt() const { return _cnt; } | |
539 const Type* field_at(uint i) const { | |
540 assert(i < _cnt, "oob"); | |
541 return _fields[i]; | |
542 } | |
543 void set_field_at(uint i, const Type* t) { | |
544 assert(i < _cnt, "oob"); | |
545 _fields[i] = t; | |
546 } | |
547 | |
548 static const TypeTuple *make( uint cnt, const Type **fields ); | |
549 static const TypeTuple *make_range(ciSignature *sig); | |
550 static const TypeTuple *make_domain(ciInstanceKlass* recv, ciSignature *sig); | |
551 | |
552 // Subroutine call type with space allocated for argument types | |
553 static const Type **fields( uint arg_cnt ); | |
554 | |
555 virtual const Type *xmeet( const Type *t ) const; | |
556 virtual const Type *xdual() const; // Compute dual right now. | |
557 // Convenience common pre-built types. | |
558 static const TypeTuple *IFBOTH; | |
559 static const TypeTuple *IFFALSE; | |
560 static const TypeTuple *IFTRUE; | |
561 static const TypeTuple *IFNEITHER; | |
562 static const TypeTuple *LOOPBODY; | |
563 static const TypeTuple *MEMBAR; | |
564 static const TypeTuple *STORECONDITIONAL; | |
565 static const TypeTuple *START_I2C; | |
566 static const TypeTuple *INT_PAIR; | |
567 static const TypeTuple *LONG_PAIR; | |
568 #ifndef PRODUCT | |
569 virtual void dump2( Dict &d, uint, outputStream *st ) const; // Specialized per-Type dumping | |
570 #endif | |
571 }; | |
572 | |
573 //------------------------------TypeAry---------------------------------------- | |
574 // Class of Array Types | |
575 class TypeAry : public Type { | |
576 TypeAry( const Type *elem, const TypeInt *size) : Type(Array), | |
577 _elem(elem), _size(size) {} | |
578 public: | |
579 virtual bool eq( const Type *t ) const; | |
580 virtual int hash() const; // Type specific hashing | |
581 virtual bool singleton(void) const; // TRUE if type is a singleton | |
582 virtual bool empty(void) const; // TRUE if type is vacuous | |
583 | |
584 private: | |
585 const Type *_elem; // Element type of array | |
586 const TypeInt *_size; // Elements in array | |
587 friend class TypeAryPtr; | |
588 | |
589 public: | |
590 static const TypeAry *make( const Type *elem, const TypeInt *size); | |
591 | |
592 virtual const Type *xmeet( const Type *t ) const; | |
593 virtual const Type *xdual() const; // Compute dual right now. | |
594 bool ary_must_be_exact() const; // true if arrays of such are never generic | |
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595 #ifdef ASSERT |
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596 // One type is interface, the other is oop |
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597 virtual bool interface_vs_oop(const Type *t) const; |
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598 #endif |
0 | 599 #ifndef PRODUCT |
600 virtual void dump2( Dict &d, uint, outputStream *st ) const; // Specialized per-Type dumping | |
601 #endif | |
602 }; | |
603 | |
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604 //------------------------------TypeVect--------------------------------------- |
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605 // Class of Vector Types |
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606 class TypeVect : public Type { |
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607 const Type* _elem; // Vector's element type |
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608 const uint _length; // Elements in vector (power of 2) |
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609 |
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610 protected: |
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611 TypeVect(TYPES t, const Type* elem, uint length) : Type(t), |
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612 _elem(elem), _length(length) {} |
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613 |
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614 public: |
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615 const Type* element_type() const { return _elem; } |
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616 BasicType element_basic_type() const { return _elem->array_element_basic_type(); } |
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617 uint length() const { return _length; } |
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618 uint length_in_bytes() const { |
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619 return _length * type2aelembytes(element_basic_type()); |
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620 } |
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621 |
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622 virtual bool eq(const Type *t) const; |
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623 virtual int hash() const; // Type specific hashing |
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624 virtual bool singleton(void) const; // TRUE if type is a singleton |
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625 virtual bool empty(void) const; // TRUE if type is vacuous |
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626 |
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627 static const TypeVect *make(const BasicType elem_bt, uint length) { |
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628 // Use bottom primitive type. |
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629 return make(get_const_basic_type(elem_bt), length); |
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630 } |
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631 // Used directly by Replicate nodes to construct singleton vector. |
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632 static const TypeVect *make(const Type* elem, uint length); |
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633 |
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634 virtual const Type *xmeet( const Type *t) const; |
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635 virtual const Type *xdual() const; // Compute dual right now. |
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636 |
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637 static const TypeVect *VECTS; |
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638 static const TypeVect *VECTD; |
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639 static const TypeVect *VECTX; |
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640 static const TypeVect *VECTY; |
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641 |
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642 #ifndef PRODUCT |
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643 virtual void dump2(Dict &d, uint, outputStream *st) const; // Specialized per-Type dumping |
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644 #endif |
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645 }; |
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646 |
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647 class TypeVectS : public TypeVect { |
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648 friend class TypeVect; |
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649 TypeVectS(const Type* elem, uint length) : TypeVect(VectorS, elem, length) {} |
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650 }; |
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651 |
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652 class TypeVectD : public TypeVect { |
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653 friend class TypeVect; |
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654 TypeVectD(const Type* elem, uint length) : TypeVect(VectorD, elem, length) {} |
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655 }; |
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656 |
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657 class TypeVectX : public TypeVect { |
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658 friend class TypeVect; |
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659 TypeVectX(const Type* elem, uint length) : TypeVect(VectorX, elem, length) {} |
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660 }; |
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661 |
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662 class TypeVectY : public TypeVect { |
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663 friend class TypeVect; |
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664 TypeVectY(const Type* elem, uint length) : TypeVect(VectorY, elem, length) {} |
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665 }; |
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666 |
0 | 667 //------------------------------TypePtr---------------------------------------- |
668 // Class of machine Pointer Types: raw data, instances or arrays. | |
669 // If the _base enum is AnyPtr, then this refers to all of the above. | |
670 // Otherwise the _base will indicate which subset of pointers is affected, | |
671 // and the class will be inherited from. | |
672 class TypePtr : public Type { | |
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673 friend class TypeNarrowOop; |
0 | 674 public: |
675 enum PTR { TopPTR, AnyNull, Constant, Null, NotNull, BotPTR, lastPTR }; | |
676 protected: | |
677 TypePtr( TYPES t, PTR ptr, int offset ) : Type(t), _ptr(ptr), _offset(offset) {} | |
678 virtual bool eq( const Type *t ) const; | |
679 virtual int hash() const; // Type specific hashing | |
680 static const PTR ptr_meet[lastPTR][lastPTR]; | |
681 static const PTR ptr_dual[lastPTR]; | |
682 static const char * const ptr_msg[lastPTR]; | |
683 | |
684 public: | |
685 const int _offset; // Offset into oop, with TOP & BOT | |
686 const PTR _ptr; // Pointer equivalence class | |
687 | |
688 const int offset() const { return _offset; } | |
689 const PTR ptr() const { return _ptr; } | |
690 | |
691 static const TypePtr *make( TYPES t, PTR ptr, int offset ); | |
692 | |
693 // Return a 'ptr' version of this type | |
694 virtual const Type *cast_to_ptr_type(PTR ptr) const; | |
695 | |
696 virtual intptr_t get_con() const; | |
697 | |
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698 int xadd_offset( intptr_t offset ) const; |
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699 virtual const TypePtr *add_offset( intptr_t offset ) const; |
0 | 700 |
701 virtual bool singleton(void) const; // TRUE if type is a singleton | |
702 virtual bool empty(void) const; // TRUE if type is vacuous | |
703 virtual const Type *xmeet( const Type *t ) const; | |
704 int meet_offset( int offset ) const; | |
705 int dual_offset( ) const; | |
706 virtual const Type *xdual() const; // Compute dual right now. | |
707 | |
708 // meet, dual and join over pointer equivalence sets | |
709 PTR meet_ptr( const PTR in_ptr ) const { return ptr_meet[in_ptr][ptr()]; } | |
710 PTR dual_ptr() const { return ptr_dual[ptr()]; } | |
711 | |
712 // This is textually confusing unless one recalls that | |
713 // join(t) == dual()->meet(t->dual())->dual(). | |
714 PTR join_ptr( const PTR in_ptr ) const { | |
715 return ptr_dual[ ptr_meet[ ptr_dual[in_ptr] ] [ dual_ptr() ] ]; | |
716 } | |
717 | |
718 // Tests for relation to centerline of type lattice: | |
719 static bool above_centerline(PTR ptr) { return (ptr <= AnyNull); } | |
720 static bool below_centerline(PTR ptr) { return (ptr >= NotNull); } | |
721 // Convenience common pre-built types. | |
722 static const TypePtr *NULL_PTR; | |
723 static const TypePtr *NOTNULL; | |
724 static const TypePtr *BOTTOM; | |
725 #ifndef PRODUCT | |
726 virtual void dump2( Dict &d, uint depth, outputStream *st ) const; | |
727 #endif | |
728 }; | |
729 | |
730 //------------------------------TypeRawPtr------------------------------------- | |
731 // Class of raw pointers, pointers to things other than Oops. Examples | |
732 // include the stack pointer, top of heap, card-marking area, handles, etc. | |
733 class TypeRawPtr : public TypePtr { | |
734 protected: | |
735 TypeRawPtr( PTR ptr, address bits ) : TypePtr(RawPtr,ptr,0), _bits(bits){} | |
736 public: | |
737 virtual bool eq( const Type *t ) const; | |
738 virtual int hash() const; // Type specific hashing | |
739 | |
740 const address _bits; // Constant value, if applicable | |
741 | |
742 static const TypeRawPtr *make( PTR ptr ); | |
743 static const TypeRawPtr *make( address bits ); | |
744 | |
745 // Return a 'ptr' version of this type | |
746 virtual const Type *cast_to_ptr_type(PTR ptr) const; | |
747 | |
748 virtual intptr_t get_con() const; | |
749 | |
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750 virtual const TypePtr *add_offset( intptr_t offset ) const; |
0 | 751 |
752 virtual const Type *xmeet( const Type *t ) const; | |
753 virtual const Type *xdual() const; // Compute dual right now. | |
754 // Convenience common pre-built types. | |
755 static const TypeRawPtr *BOTTOM; | |
756 static const TypeRawPtr *NOTNULL; | |
757 #ifndef PRODUCT | |
758 virtual void dump2( Dict &d, uint depth, outputStream *st ) const; | |
759 #endif | |
760 }; | |
761 | |
762 //------------------------------TypeOopPtr------------------------------------- | |
763 // Some kind of oop (Java pointer), either klass or instance or array. | |
764 class TypeOopPtr : public TypePtr { | |
765 protected: | |
163 | 766 TypeOopPtr( TYPES t, PTR ptr, ciKlass* k, bool xk, ciObject* o, int offset, int instance_id ); |
0 | 767 public: |
768 virtual bool eq( const Type *t ) const; | |
769 virtual int hash() const; // Type specific hashing | |
770 virtual bool singleton(void) const; // TRUE if type is a singleton | |
771 enum { | |
223 | 772 InstanceTop = -1, // undefined instance |
773 InstanceBot = 0 // any possible instance | |
0 | 774 }; |
775 protected: | |
776 | |
777 // Oop is NULL, unless this is a constant oop. | |
778 ciObject* _const_oop; // Constant oop | |
779 // If _klass is NULL, then so is _sig. This is an unloaded klass. | |
780 ciKlass* _klass; // Klass object | |
781 // Does the type exclude subclasses of the klass? (Inexact == polymorphic.) | |
782 bool _klass_is_exact; | |
163 | 783 bool _is_ptr_to_narrowoop; |
0 | 784 |
223 | 785 // If not InstanceTop or InstanceBot, indicates that this is |
786 // a particular instance of this type which is distinct. | |
787 // This is the the node index of the allocation node creating this instance. | |
788 int _instance_id; | |
0 | 789 |
790 static const TypeOopPtr* make_from_klass_common(ciKlass* klass, bool klass_change, bool try_for_exact); | |
791 | |
223 | 792 int dual_instance_id() const; |
793 int meet_instance_id(int uid) const; | |
0 | 794 |
795 public: | |
796 // Creates a type given a klass. Correctly handles multi-dimensional arrays | |
797 // Respects UseUniqueSubclasses. | |
798 // If the klass is final, the resulting type will be exact. | |
799 static const TypeOopPtr* make_from_klass(ciKlass* klass) { | |
800 return make_from_klass_common(klass, true, false); | |
801 } | |
802 // Same as before, but will produce an exact type, even if | |
803 // the klass is not final, as long as it has exactly one implementation. | |
804 static const TypeOopPtr* make_from_klass_unique(ciKlass* klass) { | |
805 return make_from_klass_common(klass, true, true); | |
806 } | |
807 // Same as before, but does not respects UseUniqueSubclasses. | |
808 // Use this only for creating array element types. | |
809 static const TypeOopPtr* make_from_klass_raw(ciKlass* klass) { | |
810 return make_from_klass_common(klass, false, false); | |
811 } | |
812 // Creates a singleton type given an object. | |
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813 // If the object cannot be rendered as a constant, |
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814 // may return a non-singleton type. |
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815 // If require_constant, produce a NULL if a singleton is not possible. |
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816 static const TypeOopPtr* make_from_constant(ciObject* o, bool require_constant = false); |
0 | 817 |
818 // Make a generic (unclassed) pointer to an oop. | |
992 | 819 static const TypeOopPtr* make(PTR ptr, int offset, int instance_id); |
0 | 820 |
821 ciObject* const_oop() const { return _const_oop; } | |
822 virtual ciKlass* klass() const { return _klass; } | |
823 bool klass_is_exact() const { return _klass_is_exact; } | |
163 | 824 |
825 // Returns true if this pointer points at memory which contains a | |
826 // compressed oop references. | |
827 bool is_ptr_to_narrowoop_nv() const { return _is_ptr_to_narrowoop; } | |
828 | |
223 | 829 bool is_known_instance() const { return _instance_id > 0; } |
830 int instance_id() const { return _instance_id; } | |
831 bool is_known_instance_field() const { return is_known_instance() && _offset >= 0; } | |
0 | 832 |
833 virtual intptr_t get_con() const; | |
834 | |
835 virtual const Type *cast_to_ptr_type(PTR ptr) const; | |
836 | |
837 virtual const Type *cast_to_exactness(bool klass_is_exact) const; | |
838 | |
223 | 839 virtual const TypeOopPtr *cast_to_instance_id(int instance_id) const; |
0 | 840 |
841 // corresponding pointer to klass, for a given instance | |
842 const TypeKlassPtr* as_klass_type() const; | |
843 | |
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844 virtual const TypePtr *add_offset( intptr_t offset ) const; |
0 | 845 |
846 virtual const Type *xmeet( const Type *t ) const; | |
847 virtual const Type *xdual() const; // Compute dual right now. | |
848 | |
849 // Do not allow interface-vs.-noninterface joins to collapse to top. | |
850 virtual const Type *filter( const Type *kills ) const; | |
851 | |
852 // Convenience common pre-built type. | |
853 static const TypeOopPtr *BOTTOM; | |
854 #ifndef PRODUCT | |
855 virtual void dump2( Dict &d, uint depth, outputStream *st ) const; | |
856 #endif | |
857 }; | |
858 | |
859 //------------------------------TypeInstPtr------------------------------------ | |
860 // Class of Java object pointers, pointing either to non-array Java instances | |
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861 // or to a Klass* (including array klasses). |
0 | 862 class TypeInstPtr : public TypeOopPtr { |
863 TypeInstPtr( PTR ptr, ciKlass* k, bool xk, ciObject* o, int offset, int instance_id ); | |
864 virtual bool eq( const Type *t ) const; | |
865 virtual int hash() const; // Type specific hashing | |
866 | |
867 ciSymbol* _name; // class name | |
868 | |
869 public: | |
870 ciSymbol* name() const { return _name; } | |
871 | |
872 bool is_loaded() const { return _klass->is_loaded(); } | |
873 | |
874 // Make a pointer to a constant oop. | |
875 static const TypeInstPtr *make(ciObject* o) { | |
876 return make(TypePtr::Constant, o->klass(), true, o, 0); | |
877 } | |
878 // Make a pointer to a constant oop with offset. | |
879 static const TypeInstPtr *make(ciObject* o, int offset) { | |
880 return make(TypePtr::Constant, o->klass(), true, o, offset); | |
881 } | |
882 | |
883 // Make a pointer to some value of type klass. | |
884 static const TypeInstPtr *make(PTR ptr, ciKlass* klass) { | |
885 return make(ptr, klass, false, NULL, 0); | |
886 } | |
887 | |
888 // Make a pointer to some non-polymorphic value of exactly type klass. | |
889 static const TypeInstPtr *make_exact(PTR ptr, ciKlass* klass) { | |
890 return make(ptr, klass, true, NULL, 0); | |
891 } | |
892 | |
893 // Make a pointer to some value of type klass with offset. | |
894 static const TypeInstPtr *make(PTR ptr, ciKlass* klass, int offset) { | |
895 return make(ptr, klass, false, NULL, offset); | |
896 } | |
897 | |
898 // Make a pointer to an oop. | |
223 | 899 static const TypeInstPtr *make(PTR ptr, ciKlass* k, bool xk, ciObject* o, int offset, int instance_id = InstanceBot ); |
0 | 900 |
901 // If this is a java.lang.Class constant, return the type for it or NULL. | |
902 // Pass to Type::get_const_type to turn it to a type, which will usually | |
903 // be a TypeInstPtr, but may also be a TypeInt::INT for int.class, etc. | |
904 ciType* java_mirror_type() const; | |
905 | |
906 virtual const Type *cast_to_ptr_type(PTR ptr) const; | |
907 | |
908 virtual const Type *cast_to_exactness(bool klass_is_exact) const; | |
909 | |
223 | 910 virtual const TypeOopPtr *cast_to_instance_id(int instance_id) const; |
0 | 911 |
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912 virtual const TypePtr *add_offset( intptr_t offset ) const; |
0 | 913 |
914 virtual const Type *xmeet( const Type *t ) const; | |
915 virtual const TypeInstPtr *xmeet_unloaded( const TypeInstPtr *t ) const; | |
916 virtual const Type *xdual() const; // Compute dual right now. | |
917 | |
918 // Convenience common pre-built types. | |
919 static const TypeInstPtr *NOTNULL; | |
920 static const TypeInstPtr *BOTTOM; | |
921 static const TypeInstPtr *MIRROR; | |
922 static const TypeInstPtr *MARK; | |
923 static const TypeInstPtr *KLASS; | |
924 #ifndef PRODUCT | |
925 virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping | |
926 #endif | |
927 }; | |
928 | |
929 //------------------------------TypeAryPtr------------------------------------- | |
930 // Class of Java array pointers | |
931 class TypeAryPtr : public TypeOopPtr { | |
1761 | 932 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) { |
933 #ifdef ASSERT | |
934 if (k != NULL) { | |
935 // Verify that specified klass and TypeAryPtr::klass() follow the same rules. | |
936 ciKlass* ck = compute_klass(true); | |
1792 | 937 if (k != ck) { |
1761 | 938 this->dump(); tty->cr(); |
939 tty->print(" k: "); | |
940 k->print(); tty->cr(); | |
941 tty->print("ck: "); | |
942 if (ck != NULL) ck->print(); | |
943 else tty->print("<NULL>"); | |
944 tty->cr(); | |
945 assert(false, "unexpected TypeAryPtr::_klass"); | |
946 } | |
947 } | |
948 #endif | |
949 } | |
0 | 950 virtual bool eq( const Type *t ) const; |
951 virtual int hash() const; // Type specific hashing | |
952 const TypeAry *_ary; // Array we point into | |
953 | |
1761 | 954 ciKlass* compute_klass(DEBUG_ONLY(bool verify = false)) const; |
955 | |
0 | 956 public: |
957 // Accessors | |
958 ciKlass* klass() const; | |
959 const TypeAry* ary() const { return _ary; } | |
960 const Type* elem() const { return _ary->_elem; } | |
961 const TypeInt* size() const { return _ary->_size; } | |
962 | |
223 | 963 static const TypeAryPtr *make( PTR ptr, const TypeAry *ary, ciKlass* k, bool xk, int offset, int instance_id = InstanceBot); |
0 | 964 // Constant pointer to array |
223 | 965 static const TypeAryPtr *make( PTR ptr, ciObject* o, const TypeAry *ary, ciKlass* k, bool xk, int offset, int instance_id = InstanceBot); |
0 | 966 |
967 // Return a 'ptr' version of this type | |
968 virtual const Type *cast_to_ptr_type(PTR ptr) const; | |
969 | |
970 virtual const Type *cast_to_exactness(bool klass_is_exact) const; | |
971 | |
223 | 972 virtual const TypeOopPtr *cast_to_instance_id(int instance_id) const; |
0 | 973 |
974 virtual const TypeAryPtr* cast_to_size(const TypeInt* size) const; | |
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975 virtual const TypeInt* narrow_size_type(const TypeInt* size) const; |
0 | 976 |
977 virtual bool empty(void) const; // TRUE if type is vacuous | |
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978 virtual const TypePtr *add_offset( intptr_t offset ) const; |
0 | 979 |
980 virtual const Type *xmeet( const Type *t ) const; | |
981 virtual const Type *xdual() const; // Compute dual right now. | |
982 | |
983 // Convenience common pre-built types. | |
984 static const TypeAryPtr *RANGE; | |
985 static const TypeAryPtr *OOPS; | |
163 | 986 static const TypeAryPtr *NARROWOOPS; |
0 | 987 static const TypeAryPtr *BYTES; |
988 static const TypeAryPtr *SHORTS; | |
989 static const TypeAryPtr *CHARS; | |
990 static const TypeAryPtr *INTS; | |
991 static const TypeAryPtr *LONGS; | |
992 static const TypeAryPtr *FLOATS; | |
993 static const TypeAryPtr *DOUBLES; | |
994 // selects one of the above: | |
995 static const TypeAryPtr *get_array_body_type(BasicType elem) { | |
996 assert((uint)elem <= T_CONFLICT && _array_body_type[elem] != NULL, "bad elem type"); | |
997 return _array_body_type[elem]; | |
998 } | |
999 static const TypeAryPtr *_array_body_type[T_CONFLICT+1]; | |
1000 // sharpen the type of an int which is used as an array size | |
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1001 #ifdef ASSERT |
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1002 // One type is interface, the other is oop |
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1003 virtual bool interface_vs_oop(const Type *t) const; |
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1004 #endif |
0 | 1005 #ifndef PRODUCT |
1006 virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping | |
1007 #endif | |
1008 }; | |
1009 | |
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1010 //------------------------------TypeMetadataPtr------------------------------------- |
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1011 // Some kind of metadata, either Method*, MethodData* or CPCacheOop |
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1012 class TypeMetadataPtr : public TypePtr { |
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1013 protected: |
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1014 TypeMetadataPtr(PTR ptr, ciMetadata* metadata, int offset); |
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1015 public: |
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1016 virtual bool eq( const Type *t ) const; |
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1017 virtual int hash() const; // Type specific hashing |
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1018 virtual bool singleton(void) const; // TRUE if type is a singleton |
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1019 |
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1020 private: |
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1021 ciMetadata* _metadata; |
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1022 |
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1023 public: |
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1024 static const TypeMetadataPtr* make(PTR ptr, ciMetadata* m, int offset); |
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1025 |
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1026 static const TypeMetadataPtr* make(ciMethod* m); |
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1027 static const TypeMetadataPtr* make(ciMethodData* m); |
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1028 |
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1029 ciMetadata* metadata() const { return _metadata; } |
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1030 |
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1031 virtual const Type *cast_to_ptr_type(PTR ptr) const; |
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1032 |
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1033 virtual const TypePtr *add_offset( intptr_t offset ) const; |
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1034 |
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1035 virtual const Type *xmeet( const Type *t ) const; |
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1036 virtual const Type *xdual() const; // Compute dual right now. |
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1037 |
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1038 virtual intptr_t get_con() const; |
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1039 |
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1040 // Do not allow interface-vs.-noninterface joins to collapse to top. |
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1041 virtual const Type *filter( const Type *kills ) const; |
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1042 |
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1043 // Convenience common pre-built types. |
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1044 static const TypeMetadataPtr *BOTTOM; |
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1045 |
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1046 #ifndef PRODUCT |
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1047 virtual void dump2( Dict &d, uint depth, outputStream *st ) const; |
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1048 #endif |
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1049 }; |
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1050 |
0 | 1051 //------------------------------TypeKlassPtr----------------------------------- |
1052 // Class of Java Klass pointers | |
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1053 class TypeKlassPtr : public TypePtr { |
0 | 1054 TypeKlassPtr( PTR ptr, ciKlass* klass, int offset ); |
1055 | |
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1056 public: |
0 | 1057 virtual bool eq( const Type *t ) const; |
1058 virtual int hash() const; // Type specific hashing | |
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1059 virtual bool singleton(void) const; // TRUE if type is a singleton |
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1060 private: |
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1061 |
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1062 static const TypeKlassPtr* make_from_klass_common(ciKlass* klass, bool klass_change, bool try_for_exact); |
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1063 |
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1064 ciKlass* _klass; |
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1065 |
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1066 // Does the type exclude subclasses of the klass? (Inexact == polymorphic.) |
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1067 bool _klass_is_exact; |
0 | 1068 |
1069 public: | |
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1070 ciSymbol* name() const { return klass()->name(); } |
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1071 |
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1072 ciKlass* klass() const { return _klass; } |
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1073 bool klass_is_exact() const { return _klass_is_exact; } |
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1074 |
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1075 bool is_loaded() const { return klass()->is_loaded(); } |
0 | 1076 |
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1077 // Creates a type given a klass. Correctly handles multi-dimensional arrays |
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1078 // Respects UseUniqueSubclasses. |
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1079 // If the klass is final, the resulting type will be exact. |
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1080 static const TypeKlassPtr* make_from_klass(ciKlass* klass) { |
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1081 return make_from_klass_common(klass, true, false); |
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1082 } |
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1083 // Same as before, but will produce an exact type, even if |
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1084 // the klass is not final, as long as it has exactly one implementation. |
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1085 static const TypeKlassPtr* make_from_klass_unique(ciKlass* klass) { |
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1086 return make_from_klass_common(klass, true, true); |
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1087 } |
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1088 // Same as before, but does not respects UseUniqueSubclasses. |
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1089 // Use this only for creating array element types. |
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1090 static const TypeKlassPtr* make_from_klass_raw(ciKlass* klass) { |
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1091 return make_from_klass_common(klass, false, false); |
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1092 } |
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1093 |
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1094 // Make a generic (unclassed) pointer to metadata. |
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1095 static const TypeKlassPtr* make(PTR ptr, int offset); |
555 | 1096 |
0 | 1097 // ptr to klass 'k' |
1098 static const TypeKlassPtr *make( ciKlass* k ) { return make( TypePtr::Constant, k, 0); } | |
1099 // ptr to klass 'k' with offset | |
1100 static const TypeKlassPtr *make( ciKlass* k, int offset ) { return make( TypePtr::Constant, k, offset); } | |
1101 // ptr to klass 'k' or sub-klass | |
1102 static const TypeKlassPtr *make( PTR ptr, ciKlass* k, int offset); | |
1103 | |
1104 virtual const Type *cast_to_ptr_type(PTR ptr) const; | |
1105 | |
1106 virtual const Type *cast_to_exactness(bool klass_is_exact) const; | |
1107 | |
1108 // corresponding pointer to instance, for a given class | |
1109 const TypeOopPtr* as_instance_type() const; | |
1110 | |
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1111 virtual const TypePtr *add_offset( intptr_t offset ) const; |
0 | 1112 virtual const Type *xmeet( const Type *t ) const; |
1113 virtual const Type *xdual() const; // Compute dual right now. | |
1114 | |
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1115 virtual intptr_t get_con() const; |
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1116 |
0 | 1117 // Convenience common pre-built types. |
1118 static const TypeKlassPtr* OBJECT; // Not-null object klass or below | |
1119 static const TypeKlassPtr* OBJECT_OR_NULL; // Maybe-null version of same | |
1120 #ifndef PRODUCT | |
1121 virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping | |
1122 #endif | |
1123 }; | |
1124 | |
163 | 1125 //------------------------------TypeNarrowOop---------------------------------- |
113
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1126 // A compressed reference to some kind of Oop. This type wraps around |
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1127 // a preexisting TypeOopPtr and forwards most of it's operations to |
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1128 // the underlying type. It's only real purpose is to track the |
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1129 // oopness of the compressed oop value when we expose the conversion |
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1130 // between the normal and the compressed form. |
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1131 class TypeNarrowOop : public Type { |
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1132 protected: |
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1133 const TypePtr* _ptrtype; // Could be TypePtr::NULL_PTR |
113
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1134 |
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1135 TypeNarrowOop( const TypePtr* ptrtype): Type(NarrowOop), |
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1136 _ptrtype(ptrtype) { |
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1137 assert(ptrtype->offset() == 0 || |
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1138 ptrtype->offset() == OffsetBot || |
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1139 ptrtype->offset() == OffsetTop, "no real offsets"); |
113
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1140 } |
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1141 public: |
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1142 virtual bool eq( const Type *t ) const; |
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1143 virtual int hash() const; // Type specific hashing |
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1144 virtual bool singleton(void) const; // TRUE if type is a singleton |
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1145 |
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1146 virtual const Type *xmeet( const Type *t ) const; |
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1147 virtual const Type *xdual() const; // Compute dual right now. |
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1148 |
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1149 virtual intptr_t get_con() const; |
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1150 |
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1151 // Do not allow interface-vs.-noninterface joins to collapse to top. |
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1152 virtual const Type *filter( const Type *kills ) const; |
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1153 |
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1154 virtual bool empty(void) const; // TRUE if type is vacuous |
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1155 |
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1156 static const TypeNarrowOop *make( const TypePtr* type); |
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1157 |
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1158 static const TypeNarrowOop* make_from_constant(ciObject* con, bool require_constant = false) { |
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1159 return make(TypeOopPtr::make_from_constant(con, require_constant)); |
113
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1160 } |
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1161 |
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1162 // returns the equivalent ptr type for this compressed pointer |
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1163 const TypePtr *get_ptrtype() const { |
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1164 return _ptrtype; |
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1165 } |
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1166 |
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1167 static const TypeNarrowOop *BOTTOM; |
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1168 static const TypeNarrowOop *NULL_PTR; |
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1169 |
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1170 #ifndef PRODUCT |
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1171 virtual void dump2( Dict &d, uint depth, outputStream *st ) const; |
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1172 #endif |
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1173 }; |
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1174 |
0 | 1175 //------------------------------TypeFunc--------------------------------------- |
1176 // Class of Array Types | |
1177 class TypeFunc : public Type { | |
1178 TypeFunc( const TypeTuple *domain, const TypeTuple *range ) : Type(Function), _domain(domain), _range(range) {} | |
1179 virtual bool eq( const Type *t ) const; | |
1180 virtual int hash() const; // Type specific hashing | |
1181 virtual bool singleton(void) const; // TRUE if type is a singleton | |
1182 virtual bool empty(void) const; // TRUE if type is vacuous | |
1183 public: | |
1184 // Constants are shared among ADLC and VM | |
1185 enum { Control = AdlcVMDeps::Control, | |
1186 I_O = AdlcVMDeps::I_O, | |
1187 Memory = AdlcVMDeps::Memory, | |
1188 FramePtr = AdlcVMDeps::FramePtr, | |
1189 ReturnAdr = AdlcVMDeps::ReturnAdr, | |
1190 Parms = AdlcVMDeps::Parms | |
1191 }; | |
1192 | |
1193 const TypeTuple* const _domain; // Domain of inputs | |
1194 const TypeTuple* const _range; // Range of results | |
1195 | |
1196 // Accessors: | |
1197 const TypeTuple* domain() const { return _domain; } | |
1198 const TypeTuple* range() const { return _range; } | |
1199 | |
1200 static const TypeFunc *make(ciMethod* method); | |
1201 static const TypeFunc *make(ciSignature signature, const Type* extra); | |
1202 static const TypeFunc *make(const TypeTuple* domain, const TypeTuple* range); | |
1203 | |
1204 virtual const Type *xmeet( const Type *t ) const; | |
1205 virtual const Type *xdual() const; // Compute dual right now. | |
1206 | |
1207 BasicType return_type() const; | |
1208 | |
1209 #ifndef PRODUCT | |
1210 virtual void dump2( Dict &d, uint depth, outputStream *st ) const; // Specialized per-Type dumping | |
1211 #endif | |
1212 // Convenience common pre-built types. | |
1213 }; | |
1214 | |
1215 //------------------------------accessors-------------------------------------- | |
163 | 1216 inline bool Type::is_ptr_to_narrowoop() const { |
1217 #ifdef _LP64 | |
1218 return (isa_oopptr() != NULL && is_oopptr()->is_ptr_to_narrowoop_nv()); | |
1219 #else | |
1220 return false; | |
1221 #endif | |
1222 } | |
1223 | |
0 | 1224 inline float Type::getf() const { |
1225 assert( _base == FloatCon, "Not a FloatCon" ); | |
1226 return ((TypeF*)this)->_f; | |
1227 } | |
1228 | |
1229 inline double Type::getd() const { | |
1230 assert( _base == DoubleCon, "Not a DoubleCon" ); | |
1231 return ((TypeD*)this)->_d; | |
1232 } | |
1233 | |
1234 inline const TypeF *Type::is_float_constant() const { | |
1235 assert( _base == FloatCon, "Not a Float" ); | |
1236 return (TypeF*)this; | |
1237 } | |
1238 | |
1239 inline const TypeF *Type::isa_float_constant() const { | |
1240 return ( _base == FloatCon ? (TypeF*)this : NULL); | |
1241 } | |
1242 | |
1243 inline const TypeD *Type::is_double_constant() const { | |
1244 assert( _base == DoubleCon, "Not a Double" ); | |
1245 return (TypeD*)this; | |
1246 } | |
1247 | |
1248 inline const TypeD *Type::isa_double_constant() const { | |
1249 return ( _base == DoubleCon ? (TypeD*)this : NULL); | |
1250 } | |
1251 | |
1252 inline const TypeInt *Type::is_int() const { | |
1253 assert( _base == Int, "Not an Int" ); | |
1254 return (TypeInt*)this; | |
1255 } | |
1256 | |
1257 inline const TypeInt *Type::isa_int() const { | |
1258 return ( _base == Int ? (TypeInt*)this : NULL); | |
1259 } | |
1260 | |
1261 inline const TypeLong *Type::is_long() const { | |
1262 assert( _base == Long, "Not a Long" ); | |
1263 return (TypeLong*)this; | |
1264 } | |
1265 | |
1266 inline const TypeLong *Type::isa_long() const { | |
1267 return ( _base == Long ? (TypeLong*)this : NULL); | |
1268 } | |
1269 | |
1270 inline const TypeTuple *Type::is_tuple() const { | |
1271 assert( _base == Tuple, "Not a Tuple" ); | |
1272 return (TypeTuple*)this; | |
1273 } | |
1274 | |
1275 inline const TypeAry *Type::is_ary() const { | |
1276 assert( _base == Array , "Not an Array" ); | |
1277 return (TypeAry*)this; | |
1278 } | |
1279 | |
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1280 inline const TypeVect *Type::is_vect() const { |
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1281 assert( _base >= VectorS && _base <= VectorY, "Not a Vector" ); |
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1282 return (TypeVect*)this; |
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1283 } |
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1284 |
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1285 inline const TypeVect *Type::isa_vect() const { |
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1286 return (_base >= VectorS && _base <= VectorY) ? (TypeVect*)this : NULL; |
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1287 } |
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1288 |
0 | 1289 inline const TypePtr *Type::is_ptr() const { |
1290 // AnyPtr is the first Ptr and KlassPtr the last, with no non-ptrs between. | |
1291 assert(_base >= AnyPtr && _base <= KlassPtr, "Not a pointer"); | |
1292 return (TypePtr*)this; | |
1293 } | |
1294 | |
1295 inline const TypePtr *Type::isa_ptr() const { | |
1296 // AnyPtr is the first Ptr and KlassPtr the last, with no non-ptrs between. | |
1297 return (_base >= AnyPtr && _base <= KlassPtr) ? (TypePtr*)this : NULL; | |
1298 } | |
1299 | |
1300 inline const TypeOopPtr *Type::is_oopptr() const { | |
1301 // OopPtr is the first and KlassPtr the last, with no non-oops between. | |
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1302 assert(_base >= OopPtr && _base <= AryPtr, "Not a Java pointer" ) ; |
0 | 1303 return (TypeOopPtr*)this; |
1304 } | |
1305 | |
1306 inline const TypeOopPtr *Type::isa_oopptr() const { | |
1307 // OopPtr is the first and KlassPtr the last, with no non-oops between. | |
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1308 return (_base >= OopPtr && _base <= AryPtr) ? (TypeOopPtr*)this : NULL; |
0 | 1309 } |
1310 | |
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1311 inline const TypeRawPtr *Type::isa_rawptr() const { |
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1312 return (_base == RawPtr) ? (TypeRawPtr*)this : NULL; |
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1313 } |
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1314 |
0 | 1315 inline const TypeRawPtr *Type::is_rawptr() const { |
1316 assert( _base == RawPtr, "Not a raw pointer" ); | |
1317 return (TypeRawPtr*)this; | |
1318 } | |
1319 | |
1320 inline const TypeInstPtr *Type::isa_instptr() const { | |
1321 return (_base == InstPtr) ? (TypeInstPtr*)this : NULL; | |
1322 } | |
1323 | |
1324 inline const TypeInstPtr *Type::is_instptr() const { | |
1325 assert( _base == InstPtr, "Not an object pointer" ); | |
1326 return (TypeInstPtr*)this; | |
1327 } | |
1328 | |
1329 inline const TypeAryPtr *Type::isa_aryptr() const { | |
1330 return (_base == AryPtr) ? (TypeAryPtr*)this : NULL; | |
1331 } | |
1332 | |
1333 inline const TypeAryPtr *Type::is_aryptr() const { | |
1334 assert( _base == AryPtr, "Not an array pointer" ); | |
1335 return (TypeAryPtr*)this; | |
1336 } | |
1337 | |
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1338 inline const TypeNarrowOop *Type::is_narrowoop() const { |
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1339 // OopPtr is the first and KlassPtr the last, with no non-oops between. |
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1340 assert(_base == NarrowOop, "Not a narrow oop" ) ; |
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1341 return (TypeNarrowOop*)this; |
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1342 } |
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1343 |
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1344 inline const TypeNarrowOop *Type::isa_narrowoop() const { |
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1345 // OopPtr is the first and KlassPtr the last, with no non-oops between. |
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1346 return (_base == NarrowOop) ? (TypeNarrowOop*)this : NULL; |
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1347 } |
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1348 |
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1349 inline const TypeMetadataPtr *Type::is_metadataptr() const { |
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1350 // MetadataPtr is the first and CPCachePtr the last |
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1351 assert(_base == MetadataPtr, "Not a metadata pointer" ) ; |
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1352 return (TypeMetadataPtr*)this; |
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1353 } |
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1354 |
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1355 inline const TypeMetadataPtr *Type::isa_metadataptr() const { |
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1356 return (_base == MetadataPtr) ? (TypeMetadataPtr*)this : NULL; |
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1357 } |
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1358 |
0 | 1359 inline const TypeKlassPtr *Type::isa_klassptr() const { |
1360 return (_base == KlassPtr) ? (TypeKlassPtr*)this : NULL; | |
1361 } | |
1362 | |
1363 inline const TypeKlassPtr *Type::is_klassptr() const { | |
1364 assert( _base == KlassPtr, "Not a klass pointer" ); | |
1365 return (TypeKlassPtr*)this; | |
1366 } | |
1367 | |
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1368 inline const TypePtr* Type::make_ptr() const { |
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1369 return (_base == NarrowOop) ? is_narrowoop()->get_ptrtype() : |
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1370 (isa_ptr() ? is_ptr() : NULL); |
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1371 } |
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1372 |
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1373 inline const TypeOopPtr* Type::make_oopptr() const { |
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1374 return (_base == NarrowOop) ? is_narrowoop()->get_ptrtype()->is_oopptr() : is_oopptr(); |
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1375 } |
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1376 |
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1377 inline const TypeNarrowOop* Type::make_narrowoop() const { |
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1378 return (_base == NarrowOop) ? is_narrowoop() : |
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1379 (isa_ptr() ? TypeNarrowOop::make(is_ptr()) : NULL); |
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1380 } |
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1381 |
0 | 1382 inline bool Type::is_floatingpoint() const { |
1383 if( (_base == FloatCon) || (_base == FloatBot) || | |
1384 (_base == DoubleCon) || (_base == DoubleBot) ) | |
1385 return true; | |
1386 return false; | |
1387 } | |
1388 | |
1389 | |
1390 // =============================================================== | |
1391 // Things that need to be 64-bits in the 64-bit build but | |
1392 // 32-bits in the 32-bit build. Done this way to get full | |
1393 // optimization AND strong typing. | |
1394 #ifdef _LP64 | |
1395 | |
1396 // For type queries and asserts | |
1397 #define is_intptr_t is_long | |
1398 #define isa_intptr_t isa_long | |
1399 #define find_intptr_t_type find_long_type | |
1400 #define find_intptr_t_con find_long_con | |
1401 #define TypeX TypeLong | |
1402 #define Type_X Type::Long | |
1403 #define TypeX_X TypeLong::LONG | |
1404 #define TypeX_ZERO TypeLong::ZERO | |
1405 // For 'ideal_reg' machine registers | |
1406 #define Op_RegX Op_RegL | |
1407 // For phase->intcon variants | |
1408 #define MakeConX longcon | |
1409 #define ConXNode ConLNode | |
1410 // For array index arithmetic | |
1411 #define MulXNode MulLNode | |
1412 #define AndXNode AndLNode | |
1413 #define OrXNode OrLNode | |
1414 #define CmpXNode CmpLNode | |
1415 #define SubXNode SubLNode | |
1416 #define LShiftXNode LShiftLNode | |
1417 // For object size computation: | |
1418 #define AddXNode AddLNode | |
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1419 #define RShiftXNode RShiftLNode |
0 | 1420 // For card marks and hashcodes |
1421 #define URShiftXNode URShiftLNode | |
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1422 // UseOptoBiasInlining |
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1423 #define XorXNode XorLNode |
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1424 #define StoreXConditionalNode StoreLConditionalNode |
0 | 1425 // Opcodes |
1426 #define Op_LShiftX Op_LShiftL | |
1427 #define Op_AndX Op_AndL | |
1428 #define Op_AddX Op_AddL | |
1429 #define Op_SubX Op_SubL | |
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1430 #define Op_XorX Op_XorL |
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1431 #define Op_URShiftX Op_URShiftL |
0 | 1432 // conversions |
1433 #define ConvI2X(x) ConvI2L(x) | |
1434 #define ConvL2X(x) (x) | |
1435 #define ConvX2I(x) ConvL2I(x) | |
1436 #define ConvX2L(x) (x) | |
1437 | |
1438 #else | |
1439 | |
1440 // For type queries and asserts | |
1441 #define is_intptr_t is_int | |
1442 #define isa_intptr_t isa_int | |
1443 #define find_intptr_t_type find_int_type | |
1444 #define find_intptr_t_con find_int_con | |
1445 #define TypeX TypeInt | |
1446 #define Type_X Type::Int | |
1447 #define TypeX_X TypeInt::INT | |
1448 #define TypeX_ZERO TypeInt::ZERO | |
1449 // For 'ideal_reg' machine registers | |
1450 #define Op_RegX Op_RegI | |
1451 // For phase->intcon variants | |
1452 #define MakeConX intcon | |
1453 #define ConXNode ConINode | |
1454 // For array index arithmetic | |
1455 #define MulXNode MulINode | |
1456 #define AndXNode AndINode | |
1457 #define OrXNode OrINode | |
1458 #define CmpXNode CmpINode | |
1459 #define SubXNode SubINode | |
1460 #define LShiftXNode LShiftINode | |
1461 // For object size computation: | |
1462 #define AddXNode AddINode | |
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1463 #define RShiftXNode RShiftINode |
0 | 1464 // For card marks and hashcodes |
1465 #define URShiftXNode URShiftINode | |
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1466 // UseOptoBiasInlining |
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1467 #define XorXNode XorINode |
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1468 #define StoreXConditionalNode StoreIConditionalNode |
0 | 1469 // Opcodes |
1470 #define Op_LShiftX Op_LShiftI | |
1471 #define Op_AndX Op_AndI | |
1472 #define Op_AddX Op_AddI | |
1473 #define Op_SubX Op_SubI | |
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1474 #define Op_XorX Op_XorI |
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1475 #define Op_URShiftX Op_URShiftI |
0 | 1476 // conversions |
1477 #define ConvI2X(x) (x) | |
1478 #define ConvL2X(x) ConvL2I(x) | |
1479 #define ConvX2I(x) (x) | |
1480 #define ConvX2L(x) ConvI2L(x) | |
1481 | |
1482 #endif | |
1972 | 1483 |
1484 #endif // SHARE_VM_OPTO_TYPE_HPP |