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annotate src/share/vm/adlc/formsopt.hpp @ 4128:f1391adc6681
7112034: Parallel CMS fails to properly mark reference objects
Summary: Enabled reference processing when work stealing during concurrent marking
Reviewed-by: jmasa, brutisso
author | stefank |
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date | Mon, 28 Nov 2011 10:19:26 +0100 |
parents | f95d63e2154a |
children | db2e64ca2d5a |
rev | line source |
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0 | 1 /* |
1972 | 2 * Copyright (c) 1998, 2010, 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 * | |
1552
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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_ADLC_FORMSOPT_HPP |
26 #define SHARE_VM_ADLC_FORMSOPT_HPP | |
27 | |
0 | 28 // FORMSOPT.HPP - ADL Parser Target Specific Optimization Forms Classes |
29 | |
30 // Class List | |
31 class Form; | |
32 class InstructForm; | |
33 class OperandForm; | |
34 class OpClassForm; | |
35 class AttributeForm; | |
36 class RegisterForm; | |
37 class PipelineForm; | |
38 class SourceForm; | |
39 class EncodeForm; | |
40 class Component; | |
41 class Constraint; | |
42 class Predicate; | |
43 class MatchRule; | |
44 class Attribute; | |
45 class Effect; | |
46 class ExpandRule; | |
47 class RewriteRule; | |
48 class ConstructRule; | |
49 class FormatRule; | |
50 class Peephole; | |
51 class PeepMatch; | |
52 class PeepConstraint; | |
53 class EncClass; | |
54 class Interface; | |
55 class RegInterface; | |
56 class ConstInterface; | |
57 class MemInterface; | |
58 class CondInterface; | |
59 class Opcode; | |
60 class InsEncode; | |
61 class RegDef; | |
62 class RegClass; | |
63 class AllocClass; | |
64 class ResourceForm; | |
65 class PipeClassForm; | |
66 class PipeClassOperandForm; | |
67 class PipeClassResourceForm; | |
68 class PeepMatch; | |
69 class PeepConstraint; | |
70 class PeepReplace; | |
71 class MatchList; | |
72 | |
73 class ArchDesc; | |
74 | |
75 //==============================Register Allocation============================ | |
76 //------------------------------RegisterForm----------------------------------- | |
77 class RegisterForm : public Form { | |
78 private: | |
79 AllocClass *_current_ac; // State used by iter_RegDefs() | |
80 | |
81 public: | |
82 // Public Data | |
83 NameList _rdefs; // List of register definition names | |
84 Dict _regDef; // map register name to RegDef* | |
85 | |
86 NameList _rclasses; // List of register class names | |
87 Dict _regClass; // map register class name to RegClass* | |
88 | |
89 NameList _aclasses; // List of allocation class names | |
90 Dict _allocClass; // Dictionary of allocation classes | |
91 | |
92 static int _reg_ctr; // Register counter | |
93 static int RegMask_Size(); // Compute RegMask size | |
94 | |
95 // Public Methods | |
96 RegisterForm(); | |
97 ~RegisterForm(); | |
98 | |
99 void addRegDef(char *regName, char *callingConv, char *c_conv, | |
100 char * idealtype, char *encoding, char* concreteName); | |
101 RegClass *addRegClass(const char *className); | |
102 AllocClass *addAllocClass(char *allocName); | |
103 void addSpillRegClass(); | |
104 | |
105 // Provide iteration over all register definitions | |
106 // in the order used by the register allocator | |
107 void reset_RegDefs(); | |
108 RegDef *iter_RegDefs(); | |
109 RegDef *getRegDef (const char *regName); | |
110 | |
111 RegClass *getRegClass(const char *className); | |
112 | |
113 // Return register mask, compressed chunk and register # | |
114 uint reg_mask(char *register_class); | |
115 | |
116 // Check that register classes are compatible with chunks | |
117 bool verify(); | |
118 | |
119 void dump(); // Debug printer | |
120 void output(FILE *fp); // Write info to output files | |
121 }; | |
122 | |
123 //------------------------------RegDef----------------------------------------- | |
124 class RegDef : public Form { | |
125 public: | |
126 // Public Data | |
127 const char *_regname; // ADLC (Opto) Register name | |
128 const char *_callconv; // Calling convention | |
129 const char *_c_conv; // Native calling convention, 'C' | |
130 const char *_idealtype; // Ideal Type for register save/restore | |
131 const char *_concrete; // concrete register name | |
132 | |
133 private: | |
134 const char *_register_encode; // The register encoding | |
135 // The chunk and register mask bits define info for register allocation | |
136 uint32 _register_num; // Which register am I | |
137 | |
138 public: | |
139 // Public Methods | |
140 RegDef(char *regname, char *callconv, char *c_conv, | |
141 char *idealtype, char *encoding, char *concrete); | |
142 ~RegDef(); // Destructor | |
143 | |
144 // Interface to define/redefine the register number | |
145 void set_register_num(uint32 new_register_num); | |
146 | |
147 // Bit pattern used for generating machine code | |
148 const char *register_encode() const; | |
149 // Register number used in machine-independent code | |
150 uint32 register_num() const; | |
151 | |
152 void dump(); // Debug printer | |
153 void output(FILE *fp); // Write info to output files | |
154 }; | |
155 | |
156 //------------------------------RegClass--------------------------------------- | |
157 class RegClass : public Form { | |
158 public: | |
159 // Public Data | |
160 const char *_classid; // Name of class | |
161 NameList _regDefs; // List of registers in class | |
162 Dict _regDef; // Dictionary of registers in class | |
163 bool _stack_or_reg; // Allowed on any stack slot | |
164 | |
165 // Public Methods | |
166 RegClass(const char *classid);// Constructor | |
167 | |
168 void addReg(RegDef *regDef); // Add a register to this class | |
169 | |
170 uint size() const; // Number of registers in class | |
171 int regs_in_word( int wordnum, bool stack_also ); | |
172 | |
173 const RegDef *get_RegDef(const char *regDef_name) const; | |
174 | |
175 // Returns the lowest numbered register in the mask. | |
176 const RegDef* find_first_elem(); | |
177 | |
178 // Iteration support | |
179 void reset(); // Reset the following two iterators | |
180 RegDef *RegDef_iter(); // which move jointly, | |
181 const char *rd_name_iter(); // invoking either advances both. | |
182 | |
183 void dump(); // Debug printer | |
184 void output(FILE *fp); // Write info to output files | |
185 }; | |
186 | |
187 //------------------------------AllocClass------------------------------------- | |
188 class AllocClass : public Form { | |
189 private: | |
190 | |
191 public: | |
192 // Public Data | |
193 char *_classid; // Name of class | |
194 NameList _regDefs; // List of registers in class | |
195 Dict _regDef; // Dictionary of registers in class | |
196 | |
197 // Public Methods | |
198 AllocClass(char *classid); // Constructor | |
199 | |
200 void addReg(RegDef *regDef); // Add a register to this class | |
201 uint size() {return _regDef.Size();} // Number of registers in class | |
202 | |
203 void dump(); // Debug printer | |
204 void output(FILE *fp); // Write info to output files | |
205 }; | |
206 | |
207 | |
208 //==============================Frame Handling================================ | |
209 //------------------------------FrameForm------------------------------------- | |
210 class FrameForm : public Form { | |
211 private: | |
212 | |
213 public: | |
214 // Public Data | |
215 bool _direction; // Direction of stack growth | |
216 char *_sync_stack_slots; | |
217 char *_inline_cache_reg; | |
218 char *_interpreter_method_oop_reg; | |
219 char *_interpreter_frame_pointer_reg; | |
220 char *_cisc_spilling_operand_name; | |
221 char *_frame_pointer; | |
222 char *_c_frame_pointer; | |
223 char *_alignment; | |
224 bool _return_addr_loc; | |
225 bool _c_return_addr_loc; | |
226 char *_return_addr; | |
227 char *_c_return_addr; | |
228 char *_in_preserve_slots; | |
229 char *_varargs_C_out_slots_killed; | |
230 char *_calling_convention; | |
231 char *_c_calling_convention; | |
232 char *_return_value; | |
233 char *_c_return_value; | |
234 | |
235 // Public Methods | |
236 FrameForm(); | |
237 ~FrameForm(); | |
238 | |
239 void dump(); // Debug printer | |
240 void output(FILE *fp); // Write info to output files | |
241 }; | |
242 | |
243 | |
244 //==============================Scheduling===================================== | |
245 //------------------------------PipelineForm----------------------------------- | |
246 class PipelineForm : public Form { | |
247 private: | |
248 | |
249 public: | |
250 // Public Data | |
251 NameList _reslist; // List of pipeline resources | |
252 FormDict _resdict; // Resource Name -> ResourceForm mapping | |
253 int _rescount; // Number of resources (ignores OR cases) | |
254 int _maxcycleused; // Largest cycle used relative to beginning of instruction | |
255 | |
256 NameList _stages; // List of pipeline stages on architecture | |
257 int _stagecnt; // Number of stages listed | |
258 | |
259 NameList _classlist; // List of pipeline classes | |
260 FormDict _classdict; // Class Name -> PipeClassForm mapping | |
261 int _classcnt; // Number of classes | |
262 | |
263 NameList _noplist; // List of NOP instructions | |
264 int _nopcnt; // Number of nop instructions | |
265 | |
266 bool _variableSizeInstrs; // Indicates if this architecture has variable sized instructions | |
267 bool _branchHasDelaySlot; // Indicates that branches have delay slot instructions | |
268 int _maxInstrsPerBundle; // Indicates the maximum number of instructions for ILP | |
269 int _maxBundlesPerCycle; // Indicates the maximum number of bundles for ILP | |
270 int _instrUnitSize; // The minimum instruction unit size, in bytes | |
271 int _bundleUnitSize; // The bundle unit size, in bytes | |
272 int _instrFetchUnitSize; // The size of the I-fetch unit, in bytes [must be power of 2] | |
273 int _instrFetchUnits; // The number of I-fetch units processed per cycle | |
274 | |
275 // Public Methods | |
276 PipelineForm(); | |
277 ~PipelineForm(); | |
278 | |
279 void dump(); // Debug printer | |
280 void output(FILE *fp); // Write info to output files | |
281 }; | |
282 | |
283 //------------------------------ResourceForm----------------------------------- | |
284 class ResourceForm : public Form { | |
285 public: | |
286 unsigned mask() const { return _resmask; }; | |
287 | |
288 private: | |
289 // Public Data | |
290 unsigned _resmask; // Resource Mask (OR of resource specifier bits) | |
291 | |
292 public: | |
293 | |
294 // Virtual Methods | |
295 virtual ResourceForm *is_resource() const; | |
296 | |
297 // Public Methods | |
298 ResourceForm(unsigned resmask); // Constructor | |
299 ~ResourceForm(); // Destructor | |
300 | |
301 void dump(); // Debug printer | |
302 void output(FILE *fp); // Write info to output files | |
303 }; | |
304 | |
305 //------------------------------PipeClassOperandForm----------------------------- | |
306 class PipeClassOperandForm : public Form { | |
307 private: | |
308 | |
309 public: | |
310 // Public Data | |
311 const char *_stage; // Name of Stage | |
312 unsigned _iswrite; // Read or Write | |
313 unsigned _more_instrs; // Additional Instructions | |
314 | |
315 // Public Methods | |
316 PipeClassOperandForm(const char *stage, unsigned iswrite, unsigned more_instrs) | |
317 : _stage(stage) | |
318 , _iswrite(iswrite) | |
319 , _more_instrs(more_instrs) | |
320 {}; | |
321 | |
322 ~PipeClassOperandForm() {}; // Destructor | |
323 | |
324 bool isWrite() const { return _iswrite != 0; } | |
325 | |
326 void dump(); // Debug printer | |
327 void output(FILE *fp); // Write info to output files | |
328 }; | |
329 | |
330 //------------------------------PipeClassResourceForm-------------------------- | |
331 class PipeClassResourceForm : public Form { | |
332 private: | |
333 | |
334 public: | |
335 // Public Data | |
336 const char *_resource; // Resource | |
337 const char *_stage; // Stage the resource is used in | |
338 int _cycles; // Number of cycles the resource is used | |
339 | |
340 // Public Methods | |
341 PipeClassResourceForm(const char *resource, const char *stage, int cycles) | |
342 // Constructor | |
343 : _resource(resource) | |
344 , _stage(stage) | |
345 , _cycles(cycles) | |
346 {}; | |
347 | |
348 ~PipeClassResourceForm() {}; // Destructor | |
349 | |
350 void dump(); // Debug printer | |
351 void output(FILE *fp); // Write info to output files | |
352 }; | |
353 | |
354 //------------------------------PipeClassForm---------------------------------- | |
355 class PipeClassForm : public Form { | |
356 private: | |
357 | |
358 public: | |
359 | |
360 // Public Data | |
361 const char *_ident; // Name of class | |
362 int _num; // Used in name of MachNode subclass | |
363 NameList _parameters; // Locally defined names | |
364 FormDict _localNames; // Table of operands & their types | |
365 FormDict _localUsage; // Table of operand usage | |
366 FormList _resUsage; // List of resource usage | |
367 NameList _instructs; // List of instructions and machine nodes that use this pipeline class | |
368 bool _has_fixed_latency; // Always takes this number of cycles | |
369 int _fixed_latency; // Always takes this number of cycles | |
370 int _instruction_count; // Number of instructions in first bundle | |
371 bool _has_multiple_bundles; // Indicates if 1 or multiple bundles | |
372 bool _has_branch_delay_slot; // Has branch delay slot as last instruction | |
373 bool _force_serialization; // This node serializes relative to surrounding nodes | |
374 bool _may_have_no_code; // This node may generate no code based on register allocation | |
375 | |
376 // Virtual Methods | |
377 virtual PipeClassForm *is_pipeclass() const; | |
378 | |
379 // Public Methods | |
380 PipeClassForm(const char *id, int num); | |
381 // Constructor | |
382 ~PipeClassForm(); // Destructor | |
383 | |
384 bool hasFixedLatency() { return _has_fixed_latency; } | |
385 int fixedLatency() { return _fixed_latency; } | |
386 | |
387 void setFixedLatency(int fixed_latency) { _has_fixed_latency = 1; _fixed_latency = fixed_latency; } | |
388 | |
389 void setInstructionCount(int i) { _instruction_count = i; } | |
390 void setMultipleBundles(bool b) { _has_multiple_bundles = b; } | |
391 void setBranchDelay(bool s) { _has_branch_delay_slot = s; } | |
392 void setForceSerialization(bool s) { _force_serialization = s; } | |
393 void setMayHaveNoCode(bool s) { _may_have_no_code = s; } | |
394 | |
395 int InstructionCount() const { return _instruction_count; } | |
396 bool hasMultipleBundles() const { return _has_multiple_bundles; } | |
397 bool hasBranchDelay() const { return _has_branch_delay_slot; } | |
398 bool forceSerialization() const { return _force_serialization; } | |
399 bool mayHaveNoCode() const { return _may_have_no_code; } | |
400 | |
401 void dump(); // Debug printer | |
402 void output(FILE *fp); // Write info to output files | |
403 }; | |
404 | |
405 | |
406 //==============================Peephole Optimization========================== | |
407 //------------------------------Peephole--------------------------------------- | |
408 class Peephole : public Form { | |
409 private: | |
410 static int _peephole_counter;// Incremented by each peephole rule parsed | |
411 int _peephole_number;// Remember my order in architecture description | |
412 PeepMatch *_match; // Instruction pattern to match | |
413 PeepConstraint *_constraint; // List of additional constraints | |
414 PeepReplace *_replace; // Instruction pattern to substitute in | |
415 | |
416 Peephole *_next; | |
417 | |
418 public: | |
419 // Public Methods | |
420 Peephole(); | |
421 ~Peephole(); | |
422 | |
423 // Append a peephole rule with the same root instruction | |
424 void append_peephole(Peephole *next_peephole); | |
425 | |
426 // Store the components of this peephole rule | |
427 void add_match(PeepMatch *only_one_match); | |
428 void append_constraint(PeepConstraint *next_constraint); | |
429 void add_replace(PeepReplace *only_one_replacement); | |
430 | |
431 // Access the components of this peephole rule | |
432 int peephole_number() { return _peephole_number; } | |
433 PeepMatch *match() { return _match; } | |
434 PeepConstraint *constraints() { return _constraint; } | |
435 PeepReplace *replacement() { return _replace; } | |
436 Peephole *next() { return _next; } | |
437 | |
438 void dump(); // Debug printer | |
439 void output(FILE *fp); // Write info to output files | |
440 }; | |
441 | |
442 | |
443 class PeepMatch : public Form { | |
444 private: | |
445 char *_rule; | |
446 // NameList _depth; // Depth of this instruction | |
447 NameList _parent; | |
448 NameList _position; | |
449 NameList _instrs; // List of instructions in match rule | |
450 NameList _input; // input position in parent's instruction | |
451 int _max_position; | |
452 | |
453 public: | |
454 // Public Methods | |
455 PeepMatch(char *rule); | |
456 ~PeepMatch(); | |
457 | |
458 // Insert info into the match-rule | |
459 void add_instruction(int parent, int position, const char *name, int input); | |
460 | |
461 // Access info about instructions in the peep-match rule | |
462 int max_position(); | |
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463 const char *instruction_name(int position); |
0 | 464 // Iterate through all info on matched instructions |
465 void reset(); | |
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466 void next_instruction(int &parent, int &position, const char* &name, int &input); |
0 | 467 // 'true' if current position in iteration is a placeholder, not matched. |
468 bool is_placeholder(); | |
469 | |
470 void dump(); | |
471 void output(FILE *fp); | |
472 }; | |
473 | |
474 | |
475 class PeepConstraint : public Form { | |
476 private: | |
477 PeepConstraint *_next; // Additional constraints ANDed together | |
478 | |
479 public: | |
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480 const int _left_inst; |
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481 const char* _left_op; |
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482 const char* _relation; |
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483 const int _right_inst; |
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484 const char* _right_op; |
0 | 485 |
486 public: | |
487 // Public Methods | |
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488 PeepConstraint(int left_inst, char* left_op, char* relation, |
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489 int right_inst, char* right_op); |
0 | 490 ~PeepConstraint(); |
491 | |
492 // Check if constraints use instruction at position | |
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493 bool constrains_instruction(int position); |
0 | 494 |
495 // Add another constraint | |
496 void append(PeepConstraint *next_peep_constraint); | |
497 // Access the next constraint in the list | |
498 PeepConstraint *next(); | |
499 | |
500 void dump(); | |
501 void output(FILE *fp); | |
502 }; | |
503 | |
504 | |
505 class PeepReplace : public Form { | |
506 private: | |
507 char *_rule; | |
508 NameList _instruction; | |
509 NameList _operand_inst_num; | |
510 NameList _operand_op_name; | |
511 | |
512 public: | |
513 | |
514 // Public Methods | |
515 PeepReplace(char *rule); | |
516 ~PeepReplace(); | |
517 | |
518 // Add contents of peepreplace | |
519 void add_instruction(char *root); | |
520 void add_operand( int inst_num, char *inst_operand ); | |
521 | |
522 // Access contents of peepreplace | |
523 void reset(); | |
524 void next_instruction(const char * &root); | |
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525 void next_operand(int &inst_num, const char * &inst_operand ); |
0 | 526 |
527 // Utilities | |
528 void dump(); | |
529 void output(FILE *fp); | |
530 }; | |
531 | |
532 | |
533 class PeepChild : public Form { | |
534 public: | |
535 const int _inst_num; // Number of instruction (-1 if only named) | |
536 const char *_inst_op; // Instruction's operand, NULL if number == -1 | |
537 const char *_inst_name; // Name of the instruction | |
538 | |
539 public: | |
540 PeepChild(char *inst_name) | |
541 : _inst_num(-1), _inst_op(NULL), _inst_name(inst_name) {}; | |
542 PeepChild(int inst_num, char *inst_op, char *inst_name) | |
543 : _inst_num(inst_num), _inst_op(inst_op), _inst_name(inst_name) {}; | |
544 ~PeepChild(); | |
545 | |
546 bool use_leaf_operand() { return _inst_num != -1; }; | |
547 bool generate_an_instruction() { return _inst_num == -1; } | |
548 | |
549 void dump(); | |
550 void output(FILE *fp); | |
551 }; | |
1972 | 552 |
553 #endif // SHARE_VM_ADLC_FORMSOPT_HPP |