Mercurial > hg > graal-jvmci-8
annotate src/share/vm/adlc/formssel.cpp @ 1541:b5fdf39b9749
6953576: bottom_type for matched AddPNodes doesn't always agree with ideal
Reviewed-by: kvn
author | never |
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date | Tue, 18 May 2010 23:58:32 -0700 |
parents | d7f654633cfe |
children | c18cbe5936b8 |
rev | line source |
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0 | 1 /* |
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6946040: add intrinsic for short and char reverseBytes
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2 * Copyright 1998-2010 Sun Microsystems, Inc. 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 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 // FORMS.CPP - Definitions for ADL Parser Forms Classes | |
26 #include "adlc.hpp" | |
27 | |
28 //==============================Instructions=================================== | |
29 //------------------------------InstructForm----------------------------------- | |
30 InstructForm::InstructForm(const char *id, bool ideal_only) | |
31 : _ident(id), _ideal_only(ideal_only), | |
32 _localNames(cmpstr, hashstr, Form::arena), | |
33 _effects(cmpstr, hashstr, Form::arena) { | |
34 _ftype = Form::INS; | |
35 | |
36 _matrule = NULL; | |
37 _insencode = NULL; | |
38 _opcode = NULL; | |
39 _size = NULL; | |
40 _attribs = NULL; | |
41 _predicate = NULL; | |
42 _exprule = NULL; | |
43 _rewrule = NULL; | |
44 _format = NULL; | |
45 _peephole = NULL; | |
46 _ins_pipe = NULL; | |
47 _uniq_idx = NULL; | |
48 _num_uniq = 0; | |
49 _cisc_spill_operand = Not_cisc_spillable;// Which operand may cisc-spill | |
50 _cisc_spill_alternate = NULL; // possible cisc replacement | |
51 _cisc_reg_mask_name = NULL; | |
52 _is_cisc_alternate = false; | |
53 _is_short_branch = false; | |
54 _short_branch_form = NULL; | |
55 _alignment = 1; | |
56 } | |
57 | |
58 InstructForm::InstructForm(const char *id, InstructForm *instr, MatchRule *rule) | |
59 : _ident(id), _ideal_only(false), | |
60 _localNames(instr->_localNames), | |
61 _effects(instr->_effects) { | |
62 _ftype = Form::INS; | |
63 | |
64 _matrule = rule; | |
65 _insencode = instr->_insencode; | |
66 _opcode = instr->_opcode; | |
67 _size = instr->_size; | |
68 _attribs = instr->_attribs; | |
69 _predicate = instr->_predicate; | |
70 _exprule = instr->_exprule; | |
71 _rewrule = instr->_rewrule; | |
72 _format = instr->_format; | |
73 _peephole = instr->_peephole; | |
74 _ins_pipe = instr->_ins_pipe; | |
75 _uniq_idx = instr->_uniq_idx; | |
76 _num_uniq = instr->_num_uniq; | |
77 _cisc_spill_operand = Not_cisc_spillable;// Which operand may cisc-spill | |
78 _cisc_spill_alternate = NULL; // possible cisc replacement | |
79 _cisc_reg_mask_name = NULL; | |
80 _is_cisc_alternate = false; | |
81 _is_short_branch = false; | |
82 _short_branch_form = NULL; | |
83 _alignment = 1; | |
84 // Copy parameters | |
85 const char *name; | |
86 instr->_parameters.reset(); | |
87 for (; (name = instr->_parameters.iter()) != NULL;) | |
88 _parameters.addName(name); | |
89 } | |
90 | |
91 InstructForm::~InstructForm() { | |
92 } | |
93 | |
94 InstructForm *InstructForm::is_instruction() const { | |
95 return (InstructForm*)this; | |
96 } | |
97 | |
98 bool InstructForm::ideal_only() const { | |
99 return _ideal_only; | |
100 } | |
101 | |
102 bool InstructForm::sets_result() const { | |
103 return (_matrule != NULL && _matrule->sets_result()); | |
104 } | |
105 | |
106 bool InstructForm::needs_projections() { | |
107 _components.reset(); | |
108 for( Component *comp; (comp = _components.iter()) != NULL; ) { | |
109 if (comp->isa(Component::KILL)) { | |
110 return true; | |
111 } | |
112 } | |
113 return false; | |
114 } | |
115 | |
116 | |
117 bool InstructForm::has_temps() { | |
118 if (_matrule) { | |
119 // Examine each component to see if it is a TEMP | |
120 _components.reset(); | |
121 // Skip the first component, if already handled as (SET dst (...)) | |
122 Component *comp = NULL; | |
123 if (sets_result()) comp = _components.iter(); | |
124 while ((comp = _components.iter()) != NULL) { | |
125 if (comp->isa(Component::TEMP)) { | |
126 return true; | |
127 } | |
128 } | |
129 } | |
130 | |
131 return false; | |
132 } | |
133 | |
134 uint InstructForm::num_defs_or_kills() { | |
135 uint defs_or_kills = 0; | |
136 | |
137 _components.reset(); | |
138 for( Component *comp; (comp = _components.iter()) != NULL; ) { | |
139 if( comp->isa(Component::DEF) || comp->isa(Component::KILL) ) { | |
140 ++defs_or_kills; | |
141 } | |
142 } | |
143 | |
144 return defs_or_kills; | |
145 } | |
146 | |
147 // This instruction has an expand rule? | |
148 bool InstructForm::expands() const { | |
149 return ( _exprule != NULL ); | |
150 } | |
151 | |
152 // This instruction has a peephole rule? | |
153 Peephole *InstructForm::peepholes() const { | |
154 return _peephole; | |
155 } | |
156 | |
157 // This instruction has a peephole rule? | |
158 void InstructForm::append_peephole(Peephole *peephole) { | |
159 if( _peephole == NULL ) { | |
160 _peephole = peephole; | |
161 } else { | |
162 _peephole->append_peephole(peephole); | |
163 } | |
164 } | |
165 | |
166 | |
167 // ideal opcode enumeration | |
168 const char *InstructForm::ideal_Opcode( FormDict &globalNames ) const { | |
169 if( !_matrule ) return "Node"; // Something weird | |
170 // Chain rules do not really have ideal Opcodes; use their source | |
171 // operand ideal Opcode instead. | |
172 if( is_simple_chain_rule(globalNames) ) { | |
173 const char *src = _matrule->_rChild->_opType; | |
174 OperandForm *src_op = globalNames[src]->is_operand(); | |
175 assert( src_op, "Not operand class of chain rule" ); | |
176 if( !src_op->_matrule ) return "Node"; | |
177 return src_op->_matrule->_opType; | |
178 } | |
179 // Operand chain rules do not really have ideal Opcodes | |
180 if( _matrule->is_chain_rule(globalNames) ) | |
181 return "Node"; | |
182 return strcmp(_matrule->_opType,"Set") | |
183 ? _matrule->_opType | |
184 : _matrule->_rChild->_opType; | |
185 } | |
186 | |
187 // Recursive check on all operands' match rules in my match rule | |
188 bool InstructForm::is_pinned(FormDict &globals) { | |
189 if ( ! _matrule) return false; | |
190 | |
191 int index = 0; | |
192 if (_matrule->find_type("Goto", index)) return true; | |
193 if (_matrule->find_type("If", index)) return true; | |
194 if (_matrule->find_type("CountedLoopEnd",index)) return true; | |
195 if (_matrule->find_type("Return", index)) return true; | |
196 if (_matrule->find_type("Rethrow", index)) return true; | |
197 if (_matrule->find_type("TailCall", index)) return true; | |
198 if (_matrule->find_type("TailJump", index)) return true; | |
199 if (_matrule->find_type("Halt", index)) return true; | |
200 if (_matrule->find_type("Jump", index)) return true; | |
201 | |
202 return is_parm(globals); | |
203 } | |
204 | |
205 // Recursive check on all operands' match rules in my match rule | |
206 bool InstructForm::is_projection(FormDict &globals) { | |
207 if ( ! _matrule) return false; | |
208 | |
209 int index = 0; | |
210 if (_matrule->find_type("Goto", index)) return true; | |
211 if (_matrule->find_type("Return", index)) return true; | |
212 if (_matrule->find_type("Rethrow", index)) return true; | |
213 if (_matrule->find_type("TailCall",index)) return true; | |
214 if (_matrule->find_type("TailJump",index)) return true; | |
215 if (_matrule->find_type("Halt", index)) return true; | |
216 | |
217 return false; | |
218 } | |
219 | |
220 // Recursive check on all operands' match rules in my match rule | |
221 bool InstructForm::is_parm(FormDict &globals) { | |
222 if ( ! _matrule) return false; | |
223 | |
224 int index = 0; | |
225 if (_matrule->find_type("Parm",index)) return true; | |
226 | |
227 return false; | |
228 } | |
229 | |
230 | |
231 // Return 'true' if this instruction matches an ideal 'Copy*' node | |
232 int InstructForm::is_ideal_copy() const { | |
233 return _matrule ? _matrule->is_ideal_copy() : 0; | |
234 } | |
235 | |
236 // Return 'true' if this instruction is too complex to rematerialize. | |
237 int InstructForm::is_expensive() const { | |
238 // We can prove it is cheap if it has an empty encoding. | |
239 // This helps with platform-specific nops like ThreadLocal and RoundFloat. | |
240 if (is_empty_encoding()) | |
241 return 0; | |
242 | |
243 if (is_tls_instruction()) | |
244 return 1; | |
245 | |
246 if (_matrule == NULL) return 0; | |
247 | |
248 return _matrule->is_expensive(); | |
249 } | |
250 | |
251 // Has an empty encoding if _size is a constant zero or there | |
252 // are no ins_encode tokens. | |
253 int InstructForm::is_empty_encoding() const { | |
254 if (_insencode != NULL) { | |
255 _insencode->reset(); | |
256 if (_insencode->encode_class_iter() == NULL) { | |
257 return 1; | |
258 } | |
259 } | |
260 if (_size != NULL && strcmp(_size, "0") == 0) { | |
261 return 1; | |
262 } | |
263 return 0; | |
264 } | |
265 | |
266 int InstructForm::is_tls_instruction() const { | |
267 if (_ident != NULL && | |
268 ( ! strcmp( _ident,"tlsLoadP") || | |
269 ! strncmp(_ident,"tlsLoadP_",9)) ) { | |
270 return 1; | |
271 } | |
272 | |
273 if (_matrule != NULL && _insencode != NULL) { | |
274 const char* opType = _matrule->_opType; | |
275 if (strcmp(opType, "Set")==0) | |
276 opType = _matrule->_rChild->_opType; | |
277 if (strcmp(opType,"ThreadLocal")==0) { | |
278 fprintf(stderr, "Warning: ThreadLocal instruction %s should be named 'tlsLoadP_*'\n", | |
279 (_ident == NULL ? "NULL" : _ident)); | |
280 return 1; | |
281 } | |
282 } | |
283 | |
284 return 0; | |
285 } | |
286 | |
287 | |
288 // Return 'true' if this instruction matches an ideal 'Copy*' node | |
289 bool InstructForm::is_ideal_unlock() const { | |
290 return _matrule ? _matrule->is_ideal_unlock() : false; | |
291 } | |
292 | |
293 bool InstructForm::is_ideal_call_leaf() const { | |
294 return _matrule ? _matrule->is_ideal_call_leaf() : false; | |
295 } | |
296 | |
297 // Return 'true' if this instruction matches an ideal 'If' node | |
298 bool InstructForm::is_ideal_if() const { | |
299 if( _matrule == NULL ) return false; | |
300 | |
301 return _matrule->is_ideal_if(); | |
302 } | |
303 | |
304 // Return 'true' if this instruction matches an ideal 'FastLock' node | |
305 bool InstructForm::is_ideal_fastlock() const { | |
306 if( _matrule == NULL ) return false; | |
307 | |
308 return _matrule->is_ideal_fastlock(); | |
309 } | |
310 | |
311 // Return 'true' if this instruction matches an ideal 'MemBarXXX' node | |
312 bool InstructForm::is_ideal_membar() const { | |
313 if( _matrule == NULL ) return false; | |
314 | |
315 return _matrule->is_ideal_membar(); | |
316 } | |
317 | |
318 // Return 'true' if this instruction matches an ideal 'LoadPC' node | |
319 bool InstructForm::is_ideal_loadPC() const { | |
320 if( _matrule == NULL ) return false; | |
321 | |
322 return _matrule->is_ideal_loadPC(); | |
323 } | |
324 | |
325 // Return 'true' if this instruction matches an ideal 'Box' node | |
326 bool InstructForm::is_ideal_box() const { | |
327 if( _matrule == NULL ) return false; | |
328 | |
329 return _matrule->is_ideal_box(); | |
330 } | |
331 | |
332 // Return 'true' if this instruction matches an ideal 'Goto' node | |
333 bool InstructForm::is_ideal_goto() const { | |
334 if( _matrule == NULL ) return false; | |
335 | |
336 return _matrule->is_ideal_goto(); | |
337 } | |
338 | |
339 // Return 'true' if this instruction matches an ideal 'Jump' node | |
340 bool InstructForm::is_ideal_jump() const { | |
341 if( _matrule == NULL ) return false; | |
342 | |
343 return _matrule->is_ideal_jump(); | |
344 } | |
345 | |
346 // Return 'true' if instruction matches ideal 'If' | 'Goto' | | |
347 // 'CountedLoopEnd' | 'Jump' | |
348 bool InstructForm::is_ideal_branch() const { | |
349 if( _matrule == NULL ) return false; | |
350 | |
351 return _matrule->is_ideal_if() || _matrule->is_ideal_goto() || _matrule->is_ideal_jump(); | |
352 } | |
353 | |
354 | |
355 // Return 'true' if this instruction matches an ideal 'Return' node | |
356 bool InstructForm::is_ideal_return() const { | |
357 if( _matrule == NULL ) return false; | |
358 | |
359 // Check MatchRule to see if the first entry is the ideal "Return" node | |
360 int index = 0; | |
361 if (_matrule->find_type("Return",index)) return true; | |
362 if (_matrule->find_type("Rethrow",index)) return true; | |
363 if (_matrule->find_type("TailCall",index)) return true; | |
364 if (_matrule->find_type("TailJump",index)) return true; | |
365 | |
366 return false; | |
367 } | |
368 | |
369 // Return 'true' if this instruction matches an ideal 'Halt' node | |
370 bool InstructForm::is_ideal_halt() const { | |
371 int index = 0; | |
372 return _matrule && _matrule->find_type("Halt",index); | |
373 } | |
374 | |
375 // Return 'true' if this instruction matches an ideal 'SafePoint' node | |
376 bool InstructForm::is_ideal_safepoint() const { | |
377 int index = 0; | |
378 return _matrule && _matrule->find_type("SafePoint",index); | |
379 } | |
380 | |
381 // Return 'true' if this instruction matches an ideal 'Nop' node | |
382 bool InstructForm::is_ideal_nop() const { | |
383 return _ident && _ident[0] == 'N' && _ident[1] == 'o' && _ident[2] == 'p' && _ident[3] == '_'; | |
384 } | |
385 | |
386 bool InstructForm::is_ideal_control() const { | |
387 if ( ! _matrule) return false; | |
388 | |
389 return is_ideal_return() || is_ideal_branch() || is_ideal_halt(); | |
390 } | |
391 | |
392 // Return 'true' if this instruction matches an ideal 'Call' node | |
393 Form::CallType InstructForm::is_ideal_call() const { | |
394 if( _matrule == NULL ) return Form::invalid_type; | |
395 | |
396 // Check MatchRule to see if the first entry is the ideal "Call" node | |
397 int idx = 0; | |
398 if(_matrule->find_type("CallStaticJava",idx)) return Form::JAVA_STATIC; | |
399 idx = 0; | |
400 if(_matrule->find_type("Lock",idx)) return Form::JAVA_STATIC; | |
401 idx = 0; | |
402 if(_matrule->find_type("Unlock",idx)) return Form::JAVA_STATIC; | |
403 idx = 0; | |
404 if(_matrule->find_type("CallDynamicJava",idx)) return Form::JAVA_DYNAMIC; | |
405 idx = 0; | |
406 if(_matrule->find_type("CallRuntime",idx)) return Form::JAVA_RUNTIME; | |
407 idx = 0; | |
408 if(_matrule->find_type("CallLeaf",idx)) return Form::JAVA_LEAF; | |
409 idx = 0; | |
410 if(_matrule->find_type("CallLeafNoFP",idx)) return Form::JAVA_LEAF; | |
411 idx = 0; | |
412 | |
413 return Form::invalid_type; | |
414 } | |
415 | |
416 // Return 'true' if this instruction matches an ideal 'Load?' node | |
417 Form::DataType InstructForm::is_ideal_load() const { | |
418 if( _matrule == NULL ) return Form::none; | |
419 | |
420 return _matrule->is_ideal_load(); | |
421 } | |
422 | |
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423 // Return 'true' if this instruction matches an ideal 'LoadKlass' node |
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424 bool InstructForm::skip_antidep_check() const { |
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425 if( _matrule == NULL ) return false; |
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426 |
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427 return _matrule->skip_antidep_check(); |
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428 } |
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429 |
0 | 430 // Return 'true' if this instruction matches an ideal 'Load?' node |
431 Form::DataType InstructForm::is_ideal_store() const { | |
432 if( _matrule == NULL ) return Form::none; | |
433 | |
434 return _matrule->is_ideal_store(); | |
435 } | |
436 | |
437 // Return the input register that must match the output register | |
438 // If this is not required, return 0 | |
439 uint InstructForm::two_address(FormDict &globals) { | |
440 uint matching_input = 0; | |
441 if(_components.count() == 0) return 0; | |
442 | |
443 _components.reset(); | |
444 Component *comp = _components.iter(); | |
445 // Check if there is a DEF | |
446 if( comp->isa(Component::DEF) ) { | |
447 // Check that this is a register | |
448 const char *def_type = comp->_type; | |
449 const Form *form = globals[def_type]; | |
450 OperandForm *op = form->is_operand(); | |
451 if( op ) { | |
452 if( op->constrained_reg_class() != NULL && | |
453 op->interface_type(globals) == Form::register_interface ) { | |
454 // Remember the local name for equality test later | |
455 const char *def_name = comp->_name; | |
456 // Check if a component has the same name and is a USE | |
457 do { | |
458 if( comp->isa(Component::USE) && strcmp(comp->_name,def_name)==0 ) { | |
459 return operand_position_format(def_name); | |
460 } | |
461 } while( (comp = _components.iter()) != NULL); | |
462 } | |
463 } | |
464 } | |
465 | |
466 return 0; | |
467 } | |
468 | |
469 | |
470 // when chaining a constant to an instruction, returns 'true' and sets opType | |
471 Form::DataType InstructForm::is_chain_of_constant(FormDict &globals) { | |
472 const char *dummy = NULL; | |
473 const char *dummy2 = NULL; | |
474 return is_chain_of_constant(globals, dummy, dummy2); | |
475 } | |
476 Form::DataType InstructForm::is_chain_of_constant(FormDict &globals, | |
477 const char * &opTypeParam) { | |
478 const char *result = NULL; | |
479 | |
480 return is_chain_of_constant(globals, opTypeParam, result); | |
481 } | |
482 | |
483 Form::DataType InstructForm::is_chain_of_constant(FormDict &globals, | |
484 const char * &opTypeParam, const char * &resultParam) { | |
485 Form::DataType data_type = Form::none; | |
486 if ( ! _matrule) return data_type; | |
487 | |
488 // !!!!! | |
489 // The source of the chain rule is 'position = 1' | |
490 uint position = 1; | |
491 const char *result = NULL; | |
492 const char *name = NULL; | |
493 const char *opType = NULL; | |
494 // Here base_operand is looking for an ideal type to be returned (opType). | |
495 if ( _matrule->is_chain_rule(globals) | |
496 && _matrule->base_operand(position, globals, result, name, opType) ) { | |
497 data_type = ideal_to_const_type(opType); | |
498 | |
499 // if it isn't an ideal constant type, just return | |
500 if ( data_type == Form::none ) return data_type; | |
501 | |
502 // Ideal constant types also adjust the opType parameter. | |
503 resultParam = result; | |
504 opTypeParam = opType; | |
505 return data_type; | |
506 } | |
507 | |
508 return data_type; | |
509 } | |
510 | |
511 // Check if a simple chain rule | |
512 bool InstructForm::is_simple_chain_rule(FormDict &globals) const { | |
513 if( _matrule && _matrule->sets_result() | |
514 && _matrule->_rChild->_lChild == NULL | |
515 && globals[_matrule->_rChild->_opType] | |
516 && globals[_matrule->_rChild->_opType]->is_opclass() ) { | |
517 return true; | |
518 } | |
519 return false; | |
520 } | |
521 | |
522 // check for structural rematerialization | |
523 bool InstructForm::rematerialize(FormDict &globals, RegisterForm *registers ) { | |
524 bool rematerialize = false; | |
525 | |
526 Form::DataType data_type = is_chain_of_constant(globals); | |
527 if( data_type != Form::none ) | |
528 rematerialize = true; | |
529 | |
530 // Constants | |
531 if( _components.count() == 1 && _components[0]->is(Component::USE_DEF) ) | |
532 rematerialize = true; | |
533 | |
534 // Pseudo-constants (values easily available to the runtime) | |
535 if (is_empty_encoding() && is_tls_instruction()) | |
536 rematerialize = true; | |
537 | |
538 // 1-input, 1-output, such as copies or increments. | |
539 if( _components.count() == 2 && | |
540 _components[0]->is(Component::DEF) && | |
541 _components[1]->isa(Component::USE) ) | |
542 rematerialize = true; | |
543 | |
544 // Check for an ideal 'Load?' and eliminate rematerialize option | |
545 if ( is_ideal_load() != Form::none || // Ideal load? Do not rematerialize | |
546 is_ideal_copy() != Form::none || // Ideal copy? Do not rematerialize | |
547 is_expensive() != Form::none) { // Expensive? Do not rematerialize | |
548 rematerialize = false; | |
549 } | |
550 | |
551 // Always rematerialize the flags. They are more expensive to save & | |
552 // restore than to recompute (and possibly spill the compare's inputs). | |
553 if( _components.count() >= 1 ) { | |
554 Component *c = _components[0]; | |
555 const Form *form = globals[c->_type]; | |
556 OperandForm *opform = form->is_operand(); | |
557 if( opform ) { | |
558 // Avoid the special stack_slots register classes | |
559 const char *rc_name = opform->constrained_reg_class(); | |
560 if( rc_name ) { | |
561 if( strcmp(rc_name,"stack_slots") ) { | |
562 // Check for ideal_type of RegFlags | |
563 const char *type = opform->ideal_type( globals, registers ); | |
564 if( !strcmp(type,"RegFlags") ) | |
565 rematerialize = true; | |
566 } else | |
567 rematerialize = false; // Do not rematerialize things target stk | |
568 } | |
569 } | |
570 } | |
571 | |
572 return rematerialize; | |
573 } | |
574 | |
575 // loads from memory, so must check for anti-dependence | |
576 bool InstructForm::needs_anti_dependence_check(FormDict &globals) const { | |
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577 if ( skip_antidep_check() ) return false; |
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578 |
0 | 579 // Machine independent loads must be checked for anti-dependences |
580 if( is_ideal_load() != Form::none ) return true; | |
581 | |
582 // !!!!! !!!!! !!!!! | |
583 // TEMPORARY | |
584 // if( is_simple_chain_rule(globals) ) return false; | |
585 | |
681 | 586 // String.(compareTo/equals/indexOf) and Arrays.equals use many memorys edges, |
587 // but writes none | |
0 | 588 if( _matrule && _matrule->_rChild && |
681 | 589 ( strcmp(_matrule->_rChild->_opType,"StrComp" )==0 || |
590 strcmp(_matrule->_rChild->_opType,"StrEquals" )==0 || | |
591 strcmp(_matrule->_rChild->_opType,"StrIndexOf" )==0 || | |
592 strcmp(_matrule->_rChild->_opType,"AryEq" )==0 )) | |
0 | 593 return true; |
594 | |
595 // Check if instruction has a USE of a memory operand class, but no defs | |
596 bool USE_of_memory = false; | |
597 bool DEF_of_memory = false; | |
598 Component *comp = NULL; | |
599 ComponentList &components = (ComponentList &)_components; | |
600 | |
601 components.reset(); | |
602 while( (comp = components.iter()) != NULL ) { | |
603 const Form *form = globals[comp->_type]; | |
604 if( !form ) continue; | |
605 OpClassForm *op = form->is_opclass(); | |
606 if( !op ) continue; | |
607 if( form->interface_type(globals) == Form::memory_interface ) { | |
608 if( comp->isa(Component::USE) ) USE_of_memory = true; | |
609 if( comp->isa(Component::DEF) ) { | |
610 OperandForm *oper = form->is_operand(); | |
611 if( oper && oper->is_user_name_for_sReg() ) { | |
612 // Stack slots are unaliased memory handled by allocator | |
613 oper = oper; // debug stopping point !!!!! | |
614 } else { | |
615 DEF_of_memory = true; | |
616 } | |
617 } | |
618 } | |
619 } | |
620 return (USE_of_memory && !DEF_of_memory); | |
621 } | |
622 | |
623 | |
624 bool InstructForm::is_wide_memory_kill(FormDict &globals) const { | |
625 if( _matrule == NULL ) return false; | |
626 if( !_matrule->_opType ) return false; | |
627 | |
628 if( strcmp(_matrule->_opType,"MemBarRelease") == 0 ) return true; | |
629 if( strcmp(_matrule->_opType,"MemBarAcquire") == 0 ) return true; | |
630 | |
631 return false; | |
632 } | |
633 | |
634 int InstructForm::memory_operand(FormDict &globals) const { | |
635 // Machine independent loads must be checked for anti-dependences | |
636 // Check if instruction has a USE of a memory operand class, or a def. | |
637 int USE_of_memory = 0; | |
638 int DEF_of_memory = 0; | |
639 const char* last_memory_DEF = NULL; // to test DEF/USE pairing in asserts | |
640 Component *unique = NULL; | |
641 Component *comp = NULL; | |
642 ComponentList &components = (ComponentList &)_components; | |
643 | |
644 components.reset(); | |
645 while( (comp = components.iter()) != NULL ) { | |
646 const Form *form = globals[comp->_type]; | |
647 if( !form ) continue; | |
648 OpClassForm *op = form->is_opclass(); | |
649 if( !op ) continue; | |
650 if( op->stack_slots_only(globals) ) continue; | |
651 if( form->interface_type(globals) == Form::memory_interface ) { | |
652 if( comp->isa(Component::DEF) ) { | |
653 last_memory_DEF = comp->_name; | |
654 DEF_of_memory++; | |
655 unique = comp; | |
656 } else if( comp->isa(Component::USE) ) { | |
657 if( last_memory_DEF != NULL ) { | |
658 assert(0 == strcmp(last_memory_DEF, comp->_name), "every memory DEF is followed by a USE of the same name"); | |
659 last_memory_DEF = NULL; | |
660 } | |
661 USE_of_memory++; | |
662 if (DEF_of_memory == 0) // defs take precedence | |
663 unique = comp; | |
664 } else { | |
665 assert(last_memory_DEF == NULL, "unpaired memory DEF"); | |
666 } | |
667 } | |
668 } | |
669 assert(last_memory_DEF == NULL, "unpaired memory DEF"); | |
670 assert(USE_of_memory >= DEF_of_memory, "unpaired memory DEF"); | |
671 USE_of_memory -= DEF_of_memory; // treat paired DEF/USE as one occurrence | |
672 if( (USE_of_memory + DEF_of_memory) > 0 ) { | |
673 if( is_simple_chain_rule(globals) ) { | |
674 //fprintf(stderr, "Warning: chain rule is not really a memory user.\n"); | |
675 //((InstructForm*)this)->dump(); | |
676 // Preceding code prints nothing on sparc and these insns on intel: | |
677 // leaP8 leaP32 leaPIdxOff leaPIdxScale leaPIdxScaleOff leaP8 leaP32 | |
678 // leaPIdxOff leaPIdxScale leaPIdxScaleOff | |
679 return NO_MEMORY_OPERAND; | |
680 } | |
681 | |
682 if( DEF_of_memory == 1 ) { | |
683 assert(unique != NULL, ""); | |
684 if( USE_of_memory == 0 ) { | |
685 // unique def, no uses | |
686 } else { | |
687 // // unique def, some uses | |
688 // // must return bottom unless all uses match def | |
689 // unique = NULL; | |
690 } | |
691 } else if( DEF_of_memory > 0 ) { | |
692 // multiple defs, don't care about uses | |
693 unique = NULL; | |
694 } else if( USE_of_memory == 1) { | |
695 // unique use, no defs | |
696 assert(unique != NULL, ""); | |
697 } else if( USE_of_memory > 0 ) { | |
698 // multiple uses, no defs | |
699 unique = NULL; | |
700 } else { | |
701 assert(false, "bad case analysis"); | |
702 } | |
703 // process the unique DEF or USE, if there is one | |
704 if( unique == NULL ) { | |
705 return MANY_MEMORY_OPERANDS; | |
706 } else { | |
707 int pos = components.operand_position(unique->_name); | |
708 if( unique->isa(Component::DEF) ) { | |
709 pos += 1; // get corresponding USE from DEF | |
710 } | |
711 assert(pos >= 1, "I was just looking at it!"); | |
712 return pos; | |
713 } | |
714 } | |
715 | |
716 // missed the memory op?? | |
717 if( true ) { // %%% should not be necessary | |
718 if( is_ideal_store() != Form::none ) { | |
719 fprintf(stderr, "Warning: cannot find memory opnd in instr.\n"); | |
720 ((InstructForm*)this)->dump(); | |
721 // pretend it has multiple defs and uses | |
722 return MANY_MEMORY_OPERANDS; | |
723 } | |
724 if( is_ideal_load() != Form::none ) { | |
725 fprintf(stderr, "Warning: cannot find memory opnd in instr.\n"); | |
726 ((InstructForm*)this)->dump(); | |
727 // pretend it has multiple uses and no defs | |
728 return MANY_MEMORY_OPERANDS; | |
729 } | |
730 } | |
731 | |
732 return NO_MEMORY_OPERAND; | |
733 } | |
734 | |
735 | |
736 // This instruction captures the machine-independent bottom_type | |
737 // Expected use is for pointer vs oop determination for LoadP | |
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738 bool InstructForm::captures_bottom_type(FormDict &globals) const { |
0 | 739 if( _matrule && _matrule->_rChild && |
740 (!strcmp(_matrule->_rChild->_opType,"CastPP") || // new result type | |
741 !strcmp(_matrule->_rChild->_opType,"CastX2P") || // new result type | |
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742 !strcmp(_matrule->_rChild->_opType,"DecodeN") || |
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743 !strcmp(_matrule->_rChild->_opType,"EncodeP") || |
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744 !strcmp(_matrule->_rChild->_opType,"LoadN") || |
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745 !strcmp(_matrule->_rChild->_opType,"LoadNKlass") || |
0 | 746 !strcmp(_matrule->_rChild->_opType,"CreateEx") || // type of exception |
747 !strcmp(_matrule->_rChild->_opType,"CheckCastPP")) ) return true; | |
748 else if ( is_ideal_load() == Form::idealP ) return true; | |
749 else if ( is_ideal_store() != Form::none ) return true; | |
750 | |
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751 if (needs_base_oop_edge(globals)) return true; |
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752 |
0 | 753 return false; |
754 } | |
755 | |
756 | |
757 // Access instr_cost attribute or return NULL. | |
758 const char* InstructForm::cost() { | |
759 for (Attribute* cur = _attribs; cur != NULL; cur = (Attribute*)cur->_next) { | |
760 if( strcmp(cur->_ident,AttributeForm::_ins_cost) == 0 ) { | |
761 return cur->_val; | |
762 } | |
763 } | |
764 return NULL; | |
765 } | |
766 | |
767 // Return count of top-level operands. | |
768 uint InstructForm::num_opnds() { | |
769 int num_opnds = _components.num_operands(); | |
770 | |
771 // Need special handling for matching some ideal nodes | |
772 // i.e. Matching a return node | |
773 /* | |
774 if( _matrule ) { | |
775 if( strcmp(_matrule->_opType,"Return" )==0 || | |
776 strcmp(_matrule->_opType,"Halt" )==0 ) | |
777 return 3; | |
778 } | |
779 */ | |
780 return num_opnds; | |
781 } | |
782 | |
783 // Return count of unmatched operands. | |
784 uint InstructForm::num_post_match_opnds() { | |
785 uint num_post_match_opnds = _components.count(); | |
786 uint num_match_opnds = _components.match_count(); | |
787 num_post_match_opnds = num_post_match_opnds - num_match_opnds; | |
788 | |
789 return num_post_match_opnds; | |
790 } | |
791 | |
792 // Return the number of leaves below this complex operand | |
793 uint InstructForm::num_consts(FormDict &globals) const { | |
794 if ( ! _matrule) return 0; | |
795 | |
796 // This is a recursive invocation on all operands in the matchrule | |
797 return _matrule->num_consts(globals); | |
798 } | |
799 | |
800 // Constants in match rule with specified type | |
801 uint InstructForm::num_consts(FormDict &globals, Form::DataType type) const { | |
802 if ( ! _matrule) return 0; | |
803 | |
804 // This is a recursive invocation on all operands in the matchrule | |
805 return _matrule->num_consts(globals, type); | |
806 } | |
807 | |
808 | |
809 // Return the register class associated with 'leaf'. | |
810 const char *InstructForm::out_reg_class(FormDict &globals) { | |
811 assert( false, "InstructForm::out_reg_class(FormDict &globals); Not Implemented"); | |
812 | |
813 return NULL; | |
814 } | |
815 | |
816 | |
817 | |
818 // Lookup the starting position of inputs we are interested in wrt. ideal nodes | |
819 uint InstructForm::oper_input_base(FormDict &globals) { | |
820 if( !_matrule ) return 1; // Skip control for most nodes | |
821 | |
822 // Need special handling for matching some ideal nodes | |
823 // i.e. Matching a return node | |
824 if( strcmp(_matrule->_opType,"Return" )==0 || | |
825 strcmp(_matrule->_opType,"Rethrow" )==0 || | |
826 strcmp(_matrule->_opType,"TailCall" )==0 || | |
827 strcmp(_matrule->_opType,"TailJump" )==0 || | |
828 strcmp(_matrule->_opType,"SafePoint" )==0 || | |
829 strcmp(_matrule->_opType,"Halt" )==0 ) | |
830 return AdlcVMDeps::Parms; // Skip the machine-state edges | |
831 | |
832 if( _matrule->_rChild && | |
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833 ( strcmp(_matrule->_rChild->_opType,"AryEq" )==0 || |
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834 strcmp(_matrule->_rChild->_opType,"StrComp" )==0 || |
681 | 835 strcmp(_matrule->_rChild->_opType,"StrEquals" )==0 || |
836 strcmp(_matrule->_rChild->_opType,"StrIndexOf")==0 )) { | |
986
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837 // String.(compareTo/equals/indexOf) and Arrays.equals |
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838 // take 1 control and 1 memory edges. |
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839 return 2; |
0 | 840 } |
841 | |
842 // Check for handling of 'Memory' input/edge in the ideal world. | |
843 // The AD file writer is shielded from knowledge of these edges. | |
844 int base = 1; // Skip control | |
845 base += _matrule->needs_ideal_memory_edge(globals); | |
846 | |
847 // Also skip the base-oop value for uses of derived oops. | |
848 // The AD file writer is shielded from knowledge of these edges. | |
849 base += needs_base_oop_edge(globals); | |
850 | |
851 return base; | |
852 } | |
853 | |
854 // Implementation does not modify state of internal structures | |
855 void InstructForm::build_components() { | |
856 // Add top-level operands to the components | |
857 if (_matrule) _matrule->append_components(_localNames, _components); | |
858 | |
859 // Add parameters that "do not appear in match rule". | |
860 bool has_temp = false; | |
861 const char *name; | |
862 const char *kill_name = NULL; | |
863 for (_parameters.reset(); (name = _parameters.iter()) != NULL;) { | |
864 OperandForm *opForm = (OperandForm*)_localNames[name]; | |
865 | |
603
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866 Effect* e = NULL; |
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867 { |
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868 const Form* form = _effects[name]; |
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869 e = form ? form->is_effect() : NULL; |
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870 } |
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871 |
0 | 872 if (e != NULL) { |
873 has_temp |= e->is(Component::TEMP); | |
874 | |
875 // KILLs must be declared after any TEMPs because TEMPs are real | |
876 // uses so their operand numbering must directly follow the real | |
877 // inputs from the match rule. Fixing the numbering seems | |
878 // complex so simply enforce the restriction during parse. | |
879 if (kill_name != NULL && | |
880 e->isa(Component::TEMP) && !e->isa(Component::DEF)) { | |
881 OperandForm* kill = (OperandForm*)_localNames[kill_name]; | |
882 globalAD->syntax_err(_linenum, "%s: %s %s must be at the end of the argument list\n", | |
883 _ident, kill->_ident, kill_name); | |
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884 } else if (e->isa(Component::KILL) && !e->isa(Component::USE)) { |
0 | 885 kill_name = name; |
886 } | |
887 } | |
888 | |
889 const Component *component = _components.search(name); | |
890 if ( component == NULL ) { | |
891 if (e) { | |
892 _components.insert(name, opForm->_ident, e->_use_def, false); | |
893 component = _components.search(name); | |
894 if (component->isa(Component::USE) && !component->isa(Component::TEMP) && _matrule) { | |
895 const Form *form = globalAD->globalNames()[component->_type]; | |
896 assert( form, "component type must be a defined form"); | |
897 OperandForm *op = form->is_operand(); | |
898 if (op->_interface && op->_interface->is_RegInterface()) { | |
899 globalAD->syntax_err(_linenum, "%s: illegal USE of non-input: %s %s\n", | |
900 _ident, opForm->_ident, name); | |
901 } | |
902 } | |
903 } else { | |
904 // This would be a nice warning but it triggers in a few places in a benign way | |
905 // if (_matrule != NULL && !expands()) { | |
906 // globalAD->syntax_err(_linenum, "%s: %s %s not mentioned in effect or match rule\n", | |
907 // _ident, opForm->_ident, name); | |
908 // } | |
909 _components.insert(name, opForm->_ident, Component::INVALID, false); | |
910 } | |
911 } | |
912 else if (e) { | |
913 // Component was found in the list | |
914 // Check if there is a new effect that requires an extra component. | |
915 // This happens when adding 'USE' to a component that is not yet one. | |
916 if ((!component->isa( Component::USE) && ((e->_use_def & Component::USE) != 0))) { | |
917 if (component->isa(Component::USE) && _matrule) { | |
918 const Form *form = globalAD->globalNames()[component->_type]; | |
919 assert( form, "component type must be a defined form"); | |
920 OperandForm *op = form->is_operand(); | |
921 if (op->_interface && op->_interface->is_RegInterface()) { | |
922 globalAD->syntax_err(_linenum, "%s: illegal USE of non-input: %s %s\n", | |
923 _ident, opForm->_ident, name); | |
924 } | |
925 } | |
926 _components.insert(name, opForm->_ident, e->_use_def, false); | |
927 } else { | |
928 Component *comp = (Component*)component; | |
929 comp->promote_use_def_info(e->_use_def); | |
930 } | |
931 // Component positions are zero based. | |
932 int pos = _components.operand_position(name); | |
933 assert( ! (component->isa(Component::DEF) && (pos >= 1)), | |
934 "Component::DEF can only occur in the first position"); | |
935 } | |
936 } | |
937 | |
938 // Resolving the interactions between expand rules and TEMPs would | |
939 // be complex so simply disallow it. | |
940 if (_matrule == NULL && has_temp) { | |
941 globalAD->syntax_err(_linenum, "%s: TEMPs without match rule isn't supported\n", _ident); | |
942 } | |
943 | |
944 return; | |
945 } | |
946 | |
947 // Return zero-based position in component list; -1 if not in list. | |
948 int InstructForm::operand_position(const char *name, int usedef) { | |
949 return unique_opnds_idx(_components.operand_position(name, usedef)); | |
950 } | |
951 | |
952 int InstructForm::operand_position_format(const char *name) { | |
953 return unique_opnds_idx(_components.operand_position_format(name)); | |
954 } | |
955 | |
956 // Return zero-based position in component list; -1 if not in list. | |
957 int InstructForm::label_position() { | |
958 return unique_opnds_idx(_components.label_position()); | |
959 } | |
960 | |
961 int InstructForm::method_position() { | |
962 return unique_opnds_idx(_components.method_position()); | |
963 } | |
964 | |
965 // Return number of relocation entries needed for this instruction. | |
966 uint InstructForm::reloc(FormDict &globals) { | |
967 uint reloc_entries = 0; | |
968 // Check for "Call" nodes | |
969 if ( is_ideal_call() ) ++reloc_entries; | |
970 if ( is_ideal_return() ) ++reloc_entries; | |
971 if ( is_ideal_safepoint() ) ++reloc_entries; | |
972 | |
973 | |
974 // Check if operands MAYBE oop pointers, by checking for ConP elements | |
975 // Proceed through the leaves of the match-tree and check for ConPs | |
976 if ( _matrule != NULL ) { | |
977 uint position = 0; | |
978 const char *result = NULL; | |
979 const char *name = NULL; | |
980 const char *opType = NULL; | |
981 while (_matrule->base_operand(position, globals, result, name, opType)) { | |
982 if ( strcmp(opType,"ConP") == 0 ) { | |
983 #ifdef SPARC | |
984 reloc_entries += 2; // 1 for sethi + 1 for setlo | |
985 #else | |
986 ++reloc_entries; | |
987 #endif | |
988 } | |
989 ++position; | |
990 } | |
991 } | |
992 | |
993 // Above is only a conservative estimate | |
994 // because it did not check contents of operand classes. | |
995 // !!!!! !!!!! | |
996 // Add 1 to reloc info for each operand class in the component list. | |
997 Component *comp; | |
998 _components.reset(); | |
999 while ( (comp = _components.iter()) != NULL ) { | |
1000 const Form *form = globals[comp->_type]; | |
1001 assert( form, "Did not find component's type in global names"); | |
1002 const OpClassForm *opc = form->is_opclass(); | |
1003 const OperandForm *oper = form->is_operand(); | |
1004 if ( opc && (oper == NULL) ) { | |
1005 ++reloc_entries; | |
1006 } else if ( oper ) { | |
1007 // floats and doubles loaded out of method's constant pool require reloc info | |
1008 Form::DataType type = oper->is_base_constant(globals); | |
1009 if ( (type == Form::idealF) || (type == Form::idealD) ) { | |
1010 ++reloc_entries; | |
1011 } | |
1012 } | |
1013 } | |
1014 | |
1015 // Float and Double constants may come from the CodeBuffer table | |
1016 // and require relocatable addresses for access | |
1017 // !!!!! | |
1018 // Check for any component being an immediate float or double. | |
1019 Form::DataType data_type = is_chain_of_constant(globals); | |
1020 if( data_type==idealD || data_type==idealF ) { | |
1021 #ifdef SPARC | |
1022 // sparc required more relocation entries for floating constants | |
1023 // (expires 9/98) | |
1024 reloc_entries += 6; | |
1025 #else | |
1026 reloc_entries++; | |
1027 #endif | |
1028 } | |
1029 | |
1030 return reloc_entries; | |
1031 } | |
1032 | |
1033 // Utility function defined in archDesc.cpp | |
1034 extern bool is_def(int usedef); | |
1035 | |
1036 // Return the result of reducing an instruction | |
1037 const char *InstructForm::reduce_result() { | |
1038 const char* result = "Universe"; // default | |
1039 _components.reset(); | |
1040 Component *comp = _components.iter(); | |
1041 if (comp != NULL && comp->isa(Component::DEF)) { | |
1042 result = comp->_type; | |
1043 // Override this if the rule is a store operation: | |
1044 if (_matrule && _matrule->_rChild && | |
1045 is_store_to_memory(_matrule->_rChild->_opType)) | |
1046 result = "Universe"; | |
1047 } | |
1048 return result; | |
1049 } | |
1050 | |
1051 // Return the name of the operand on the right hand side of the binary match | |
1052 // Return NULL if there is no right hand side | |
1053 const char *InstructForm::reduce_right(FormDict &globals) const { | |
1054 if( _matrule == NULL ) return NULL; | |
1055 return _matrule->reduce_right(globals); | |
1056 } | |
1057 | |
1058 // Similar for left | |
1059 const char *InstructForm::reduce_left(FormDict &globals) const { | |
1060 if( _matrule == NULL ) return NULL; | |
1061 return _matrule->reduce_left(globals); | |
1062 } | |
1063 | |
1064 | |
1065 // Base class for this instruction, MachNode except for calls | |
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1066 const char *InstructForm::mach_base_class(FormDict &globals) const { |
0 | 1067 if( is_ideal_call() == Form::JAVA_STATIC ) { |
1068 return "MachCallStaticJavaNode"; | |
1069 } | |
1070 else if( is_ideal_call() == Form::JAVA_DYNAMIC ) { | |
1071 return "MachCallDynamicJavaNode"; | |
1072 } | |
1073 else if( is_ideal_call() == Form::JAVA_RUNTIME ) { | |
1074 return "MachCallRuntimeNode"; | |
1075 } | |
1076 else if( is_ideal_call() == Form::JAVA_LEAF ) { | |
1077 return "MachCallLeafNode"; | |
1078 } | |
1079 else if (is_ideal_return()) { | |
1080 return "MachReturnNode"; | |
1081 } | |
1082 else if (is_ideal_halt()) { | |
1083 return "MachHaltNode"; | |
1084 } | |
1085 else if (is_ideal_safepoint()) { | |
1086 return "MachSafePointNode"; | |
1087 } | |
1088 else if (is_ideal_if()) { | |
1089 return "MachIfNode"; | |
1090 } | |
1091 else if (is_ideal_fastlock()) { | |
1092 return "MachFastLockNode"; | |
1093 } | |
1094 else if (is_ideal_nop()) { | |
1095 return "MachNopNode"; | |
1096 } | |
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1097 else if (captures_bottom_type(globals)) { |
0 | 1098 return "MachTypeNode"; |
1099 } else { | |
1100 return "MachNode"; | |
1101 } | |
1102 assert( false, "ShouldNotReachHere()"); | |
1103 return NULL; | |
1104 } | |
1105 | |
1106 // Compare the instruction predicates for textual equality | |
1107 bool equivalent_predicates( const InstructForm *instr1, const InstructForm *instr2 ) { | |
1108 const Predicate *pred1 = instr1->_predicate; | |
1109 const Predicate *pred2 = instr2->_predicate; | |
1110 if( pred1 == NULL && pred2 == NULL ) { | |
1111 // no predicates means they are identical | |
1112 return true; | |
1113 } | |
1114 if( pred1 != NULL && pred2 != NULL ) { | |
1115 // compare the predicates | |
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1116 if (ADLParser::equivalent_expressions(pred1->_pred, pred2->_pred)) { |
0 | 1117 return true; |
1118 } | |
1119 } | |
1120 | |
1121 return false; | |
1122 } | |
1123 | |
1124 // Check if this instruction can cisc-spill to 'alternate' | |
1125 bool InstructForm::cisc_spills_to(ArchDesc &AD, InstructForm *instr) { | |
1126 assert( _matrule != NULL && instr->_matrule != NULL, "must have match rules"); | |
1127 // Do not replace if a cisc-version has been found. | |
1128 if( cisc_spill_operand() != Not_cisc_spillable ) return false; | |
1129 | |
1130 int cisc_spill_operand = Maybe_cisc_spillable; | |
1131 char *result = NULL; | |
1132 char *result2 = NULL; | |
1133 const char *op_name = NULL; | |
1134 const char *reg_type = NULL; | |
1135 FormDict &globals = AD.globalNames(); | |
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1136 cisc_spill_operand = _matrule->matchrule_cisc_spill_match(globals, AD.get_registers(), instr->_matrule, op_name, reg_type); |
0 | 1137 if( (cisc_spill_operand != Not_cisc_spillable) && (op_name != NULL) && equivalent_predicates(this, instr) ) { |
1138 cisc_spill_operand = operand_position(op_name, Component::USE); | |
1139 int def_oper = operand_position(op_name, Component::DEF); | |
1140 if( def_oper == NameList::Not_in_list && instr->num_opnds() == num_opnds()) { | |
1141 // Do not support cisc-spilling for destination operands and | |
1142 // make sure they have the same number of operands. | |
1143 _cisc_spill_alternate = instr; | |
1144 instr->set_cisc_alternate(true); | |
1145 if( AD._cisc_spill_debug ) { | |
1146 fprintf(stderr, "Instruction %s cisc-spills-to %s\n", _ident, instr->_ident); | |
1147 fprintf(stderr, " using operand %s %s at index %d\n", reg_type, op_name, cisc_spill_operand); | |
1148 } | |
1149 // Record that a stack-version of the reg_mask is needed | |
1150 // !!!!! | |
1151 OperandForm *oper = (OperandForm*)(globals[reg_type]->is_operand()); | |
1152 assert( oper != NULL, "cisc-spilling non operand"); | |
1153 const char *reg_class_name = oper->constrained_reg_class(); | |
1154 AD.set_stack_or_reg(reg_class_name); | |
1155 const char *reg_mask_name = AD.reg_mask(*oper); | |
1156 set_cisc_reg_mask_name(reg_mask_name); | |
1157 const char *stack_or_reg_mask_name = AD.stack_or_reg_mask(*oper); | |
1158 } else { | |
1159 cisc_spill_operand = Not_cisc_spillable; | |
1160 } | |
1161 } else { | |
1162 cisc_spill_operand = Not_cisc_spillable; | |
1163 } | |
1164 | |
1165 set_cisc_spill_operand(cisc_spill_operand); | |
1166 return (cisc_spill_operand != Not_cisc_spillable); | |
1167 } | |
1168 | |
1169 // Check to see if this instruction can be replaced with the short branch | |
1170 // instruction `short-branch' | |
1171 bool InstructForm::check_branch_variant(ArchDesc &AD, InstructForm *short_branch) { | |
1172 if (_matrule != NULL && | |
1173 this != short_branch && // Don't match myself | |
1174 !is_short_branch() && // Don't match another short branch variant | |
1175 reduce_result() != NULL && | |
1176 strcmp(reduce_result(), short_branch->reduce_result()) == 0 && | |
1177 _matrule->equivalent(AD.globalNames(), short_branch->_matrule)) { | |
1178 // The instructions are equivalent. | |
1179 if (AD._short_branch_debug) { | |
1180 fprintf(stderr, "Instruction %s has short form %s\n", _ident, short_branch->_ident); | |
1181 } | |
1182 _short_branch_form = short_branch; | |
1183 return true; | |
1184 } | |
1185 return false; | |
1186 } | |
1187 | |
1188 | |
1189 // --------------------------- FILE *output_routines | |
1190 // | |
1191 // Generate the format call for the replacement variable | |
1192 void InstructForm::rep_var_format(FILE *fp, const char *rep_var) { | |
1193 // Find replacement variable's type | |
1194 const Form *form = _localNames[rep_var]; | |
1195 if (form == NULL) { | |
1196 fprintf(stderr, "unknown replacement variable in format statement: '%s'\n", rep_var); | |
1197 assert(false, "ShouldNotReachHere()"); | |
1198 } | |
1199 OpClassForm *opc = form->is_opclass(); | |
1200 assert( opc, "replacement variable was not found in local names"); | |
1201 // Lookup the index position of the replacement variable | |
1202 int idx = operand_position_format(rep_var); | |
1203 if ( idx == -1 ) { | |
1204 assert( strcmp(opc->_ident,"label")==0, "Unimplemented"); | |
1205 assert( false, "ShouldNotReachHere()"); | |
1206 } | |
1207 | |
1208 if (is_noninput_operand(idx)) { | |
1209 // This component isn't in the input array. Print out the static | |
1210 // name of the register. | |
1211 OperandForm* oper = form->is_operand(); | |
1212 if (oper != NULL && oper->is_bound_register()) { | |
1213 const RegDef* first = oper->get_RegClass()->find_first_elem(); | |
1214 fprintf(fp, " tty->print(\"%s\");\n", first->_regname); | |
1215 } else { | |
1216 globalAD->syntax_err(_linenum, "In %s can't find format for %s %s", _ident, opc->_ident, rep_var); | |
1217 } | |
1218 } else { | |
1219 // Output the format call for this operand | |
1220 fprintf(fp,"opnd_array(%d)->",idx); | |
1221 if (idx == 0) | |
1222 fprintf(fp,"int_format(ra, this, st); // %s\n", rep_var); | |
1223 else | |
1224 fprintf(fp,"ext_format(ra, this,idx%d, st); // %s\n", idx, rep_var ); | |
1225 } | |
1226 } | |
1227 | |
1228 // Seach through operands to determine parameters unique positions. | |
1229 void InstructForm::set_unique_opnds() { | |
1230 uint* uniq_idx = NULL; | |
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1231 int nopnds = num_opnds(); |
0 | 1232 uint num_uniq = nopnds; |
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1233 int i; |
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1234 _uniq_idx_length = 0; |
0 | 1235 if ( nopnds > 0 ) { |
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1236 // Allocate index array. Worst case we're mapping from each |
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1237 // component back to an index and any DEF always goes at 0 so the |
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1238 // length of the array has to be the number of components + 1. |
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1239 _uniq_idx_length = _components.count() + 1; |
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1240 uniq_idx = (uint*) malloc(sizeof(uint)*(_uniq_idx_length)); |
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1241 for( i = 0; i < _uniq_idx_length; i++ ) { |
0 | 1242 uniq_idx[i] = i; |
1243 } | |
1244 } | |
1245 // Do it only if there is a match rule and no expand rule. With an | |
1246 // expand rule it is done by creating new mach node in Expand() | |
1247 // method. | |
1248 if ( nopnds > 0 && _matrule != NULL && _exprule == NULL ) { | |
1249 const char *name; | |
1250 uint count; | |
1251 bool has_dupl_use = false; | |
1252 | |
1253 _parameters.reset(); | |
1254 while( (name = _parameters.iter()) != NULL ) { | |
1255 count = 0; | |
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1256 int position = 0; |
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1257 int uniq_position = 0; |
0 | 1258 _components.reset(); |
1259 Component *comp = NULL; | |
1260 if( sets_result() ) { | |
1261 comp = _components.iter(); | |
1262 position++; | |
1263 } | |
1264 // The next code is copied from the method operand_position(). | |
1265 for (; (comp = _components.iter()) != NULL; ++position) { | |
1266 // When the first component is not a DEF, | |
1267 // leave space for the result operand! | |
1268 if ( position==0 && (! comp->isa(Component::DEF)) ) { | |
1269 ++position; | |
1270 } | |
1271 if( strcmp(name, comp->_name)==0 ) { | |
1272 if( ++count > 1 ) { | |
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1273 assert(position < _uniq_idx_length, "out of bounds"); |
0 | 1274 uniq_idx[position] = uniq_position; |
1275 has_dupl_use = true; | |
1276 } else { | |
1277 uniq_position = position; | |
1278 } | |
1279 } | |
1280 if( comp->isa(Component::DEF) | |
1281 && comp->isa(Component::USE) ) { | |
1282 ++position; | |
1283 if( position != 1 ) | |
1284 --position; // only use two slots for the 1st USE_DEF | |
1285 } | |
1286 } | |
1287 } | |
1288 if( has_dupl_use ) { | |
1289 for( i = 1; i < nopnds; i++ ) | |
1290 if( i != uniq_idx[i] ) | |
1291 break; | |
1292 int j = i; | |
1293 for( ; i < nopnds; i++ ) | |
1294 if( i == uniq_idx[i] ) | |
1295 uniq_idx[i] = j++; | |
1296 num_uniq = j; | |
1297 } | |
1298 } | |
1299 _uniq_idx = uniq_idx; | |
1300 _num_uniq = num_uniq; | |
1301 } | |
1302 | |
605 | 1303 // Generate index values needed for determining the operand position |
0 | 1304 void InstructForm::index_temps(FILE *fp, FormDict &globals, const char *prefix, const char *receiver) { |
1305 uint idx = 0; // position of operand in match rule | |
1306 int cur_num_opnds = num_opnds(); | |
1307 | |
1308 // Compute the index into vector of operand pointers: | |
1309 // idx0=0 is used to indicate that info comes from this same node, not from input edge. | |
1310 // idx1 starts at oper_input_base() | |
1311 if ( cur_num_opnds >= 1 ) { | |
1312 fprintf(fp," // Start at oper_input_base() and count operands\n"); | |
1313 fprintf(fp," unsigned %sidx0 = %d;\n", prefix, oper_input_base(globals)); | |
1314 fprintf(fp," unsigned %sidx1 = %d;\n", prefix, oper_input_base(globals)); | |
1315 | |
1316 // Generate starting points for other unique operands if they exist | |
1317 for ( idx = 2; idx < num_unique_opnds(); ++idx ) { | |
1318 if( *receiver == 0 ) { | |
1319 fprintf(fp," unsigned %sidx%d = %sidx%d + opnd_array(%d)->num_edges();\n", | |
1320 prefix, idx, prefix, idx-1, idx-1 ); | |
1321 } else { | |
1322 fprintf(fp," unsigned %sidx%d = %sidx%d + %s_opnds[%d]->num_edges();\n", | |
1323 prefix, idx, prefix, idx-1, receiver, idx-1 ); | |
1324 } | |
1325 } | |
1326 } | |
1327 if( *receiver != 0 ) { | |
1328 // This value is used by generate_peepreplace when copying a node. | |
1329 // Don't emit it in other cases since it can hide bugs with the | |
1330 // use invalid idx's. | |
1331 fprintf(fp," unsigned %sidx%d = %sreq(); \n", prefix, idx, receiver); | |
1332 } | |
1333 | |
1334 } | |
1335 | |
1336 // --------------------------- | |
1337 bool InstructForm::verify() { | |
1338 // !!!!! !!!!! | |
1339 // Check that a "label" operand occurs last in the operand list, if present | |
1340 return true; | |
1341 } | |
1342 | |
1343 void InstructForm::dump() { | |
1344 output(stderr); | |
1345 } | |
1346 | |
1347 void InstructForm::output(FILE *fp) { | |
1348 fprintf(fp,"\nInstruction: %s\n", (_ident?_ident:"")); | |
1349 if (_matrule) _matrule->output(fp); | |
1350 if (_insencode) _insencode->output(fp); | |
1351 if (_opcode) _opcode->output(fp); | |
1352 if (_attribs) _attribs->output(fp); | |
1353 if (_predicate) _predicate->output(fp); | |
1354 if (_effects.Size()) { | |
1355 fprintf(fp,"Effects\n"); | |
1356 _effects.dump(); | |
1357 } | |
1358 if (_exprule) _exprule->output(fp); | |
1359 if (_rewrule) _rewrule->output(fp); | |
1360 if (_format) _format->output(fp); | |
1361 if (_peephole) _peephole->output(fp); | |
1362 } | |
1363 | |
1364 void MachNodeForm::dump() { | |
1365 output(stderr); | |
1366 } | |
1367 | |
1368 void MachNodeForm::output(FILE *fp) { | |
1369 fprintf(fp,"\nMachNode: %s\n", (_ident?_ident:"")); | |
1370 } | |
1371 | |
1372 //------------------------------build_predicate-------------------------------- | |
1373 // Build instruction predicates. If the user uses the same operand name | |
1374 // twice, we need to check that the operands are pointer-eequivalent in | |
1375 // the DFA during the labeling process. | |
1376 Predicate *InstructForm::build_predicate() { | |
1377 char buf[1024], *s=buf; | |
1378 Dict names(cmpstr,hashstr,Form::arena); // Map Names to counts | |
1379 | |
1380 MatchNode *mnode = | |
1381 strcmp(_matrule->_opType, "Set") ? _matrule : _matrule->_rChild; | |
1382 mnode->count_instr_names(names); | |
1383 | |
1384 uint first = 1; | |
1385 // Start with the predicate supplied in the .ad file. | |
1386 if( _predicate ) { | |
1387 if( first ) first=0; | |
1388 strcpy(s,"("); s += strlen(s); | |
1389 strcpy(s,_predicate->_pred); | |
1390 s += strlen(s); | |
1391 strcpy(s,")"); s += strlen(s); | |
1392 } | |
1393 for( DictI i(&names); i.test(); ++i ) { | |
1394 uintptr_t cnt = (uintptr_t)i._value; | |
1395 if( cnt > 1 ) { // Need a predicate at all? | |
1396 assert( cnt == 2, "Unimplemented" ); | |
1397 // Handle many pairs | |
1398 if( first ) first=0; | |
1399 else { // All tests must pass, so use '&&' | |
1400 strcpy(s," && "); | |
1401 s += strlen(s); | |
1402 } | |
1403 // Add predicate to working buffer | |
1404 sprintf(s,"/*%s*/(",(char*)i._key); | |
1405 s += strlen(s); | |
1406 mnode->build_instr_pred(s,(char*)i._key,0); | |
1407 s += strlen(s); | |
1408 strcpy(s," == "); s += strlen(s); | |
1409 mnode->build_instr_pred(s,(char*)i._key,1); | |
1410 s += strlen(s); | |
1411 strcpy(s,")"); s += strlen(s); | |
1412 } | |
1413 } | |
1414 if( s == buf ) s = NULL; | |
1415 else { | |
1416 assert( strlen(buf) < sizeof(buf), "String buffer overflow" ); | |
1417 s = strdup(buf); | |
1418 } | |
1419 return new Predicate(s); | |
1420 } | |
1421 | |
1422 //------------------------------EncodeForm------------------------------------- | |
1423 // Constructor | |
1424 EncodeForm::EncodeForm() | |
1425 : _encClass(cmpstr,hashstr, Form::arena) { | |
1426 } | |
1427 EncodeForm::~EncodeForm() { | |
1428 } | |
1429 | |
1430 // record a new register class | |
1431 EncClass *EncodeForm::add_EncClass(const char *className) { | |
1432 EncClass *encClass = new EncClass(className); | |
1433 _eclasses.addName(className); | |
1434 _encClass.Insert(className,encClass); | |
1435 return encClass; | |
1436 } | |
1437 | |
1438 // Lookup the function body for an encoding class | |
1439 EncClass *EncodeForm::encClass(const char *className) { | |
1440 assert( className != NULL, "Must provide a defined encoding name"); | |
1441 | |
1442 EncClass *encClass = (EncClass*)_encClass[className]; | |
1443 return encClass; | |
1444 } | |
1445 | |
1446 // Lookup the function body for an encoding class | |
1447 const char *EncodeForm::encClassBody(const char *className) { | |
1448 if( className == NULL ) return NULL; | |
1449 | |
1450 EncClass *encClass = (EncClass*)_encClass[className]; | |
1451 assert( encClass != NULL, "Encode Class is missing."); | |
1452 encClass->_code.reset(); | |
1453 const char *code = (const char*)encClass->_code.iter(); | |
1454 assert( code != NULL, "Found an empty encode class body."); | |
1455 | |
1456 return code; | |
1457 } | |
1458 | |
1459 // Lookup the function body for an encoding class | |
1460 const char *EncodeForm::encClassPrototype(const char *className) { | |
1461 assert( className != NULL, "Encode class name must be non NULL."); | |
1462 | |
1463 return className; | |
1464 } | |
1465 | |
1466 void EncodeForm::dump() { // Debug printer | |
1467 output(stderr); | |
1468 } | |
1469 | |
1470 void EncodeForm::output(FILE *fp) { // Write info to output files | |
1471 const char *name; | |
1472 fprintf(fp,"\n"); | |
1473 fprintf(fp,"-------------------- Dump EncodeForm --------------------\n"); | |
1474 for (_eclasses.reset(); (name = _eclasses.iter()) != NULL;) { | |
1475 ((EncClass*)_encClass[name])->output(fp); | |
1476 } | |
1477 fprintf(fp,"-------------------- end EncodeForm --------------------\n"); | |
1478 } | |
1479 //------------------------------EncClass--------------------------------------- | |
1480 EncClass::EncClass(const char *name) | |
1481 : _localNames(cmpstr,hashstr, Form::arena), _name(name) { | |
1482 } | |
1483 EncClass::~EncClass() { | |
1484 } | |
1485 | |
1486 // Add a parameter <type,name> pair | |
1487 void EncClass::add_parameter(const char *parameter_type, const char *parameter_name) { | |
1488 _parameter_type.addName( parameter_type ); | |
1489 _parameter_name.addName( parameter_name ); | |
1490 } | |
1491 | |
1492 // Verify operand types in parameter list | |
1493 bool EncClass::check_parameter_types(FormDict &globals) { | |
1494 // !!!!! | |
1495 return false; | |
1496 } | |
1497 | |
1498 // Add the decomposed "code" sections of an encoding's code-block | |
1499 void EncClass::add_code(const char *code) { | |
1500 _code.addName(code); | |
1501 } | |
1502 | |
1503 // Add the decomposed "replacement variables" of an encoding's code-block | |
1504 void EncClass::add_rep_var(char *replacement_var) { | |
1505 _code.addName(NameList::_signal); | |
1506 _rep_vars.addName(replacement_var); | |
1507 } | |
1508 | |
1509 // Lookup the function body for an encoding class | |
1510 int EncClass::rep_var_index(const char *rep_var) { | |
1511 uint position = 0; | |
1512 const char *name = NULL; | |
1513 | |
1514 _parameter_name.reset(); | |
1515 while ( (name = _parameter_name.iter()) != NULL ) { | |
1516 if ( strcmp(rep_var,name) == 0 ) return position; | |
1517 ++position; | |
1518 } | |
1519 | |
1520 return -1; | |
1521 } | |
1522 | |
1523 // Check after parsing | |
1524 bool EncClass::verify() { | |
1525 // 1!!!! | |
1526 // Check that each replacement variable, '$name' in architecture description | |
1527 // is actually a local variable for this encode class, or a reserved name | |
1528 // "primary, secondary, tertiary" | |
1529 return true; | |
1530 } | |
1531 | |
1532 void EncClass::dump() { | |
1533 output(stderr); | |
1534 } | |
1535 | |
1536 // Write info to output files | |
1537 void EncClass::output(FILE *fp) { | |
1538 fprintf(fp,"EncClass: %s", (_name ? _name : "")); | |
1539 | |
1540 // Output the parameter list | |
1541 _parameter_type.reset(); | |
1542 _parameter_name.reset(); | |
1543 const char *type = _parameter_type.iter(); | |
1544 const char *name = _parameter_name.iter(); | |
1545 fprintf(fp, " ( "); | |
1546 for ( ; (type != NULL) && (name != NULL); | |
1547 (type = _parameter_type.iter()), (name = _parameter_name.iter()) ) { | |
1548 fprintf(fp, " %s %s,", type, name); | |
1549 } | |
1550 fprintf(fp, " ) "); | |
1551 | |
1552 // Output the code block | |
1553 _code.reset(); | |
1554 _rep_vars.reset(); | |
1555 const char *code; | |
1556 while ( (code = _code.iter()) != NULL ) { | |
1557 if ( _code.is_signal(code) ) { | |
1558 // A replacement variable | |
1559 const char *rep_var = _rep_vars.iter(); | |
1560 fprintf(fp,"($%s)", rep_var); | |
1561 } else { | |
1562 // A section of code | |
1563 fprintf(fp,"%s", code); | |
1564 } | |
1565 } | |
1566 | |
1567 } | |
1568 | |
1569 //------------------------------Opcode----------------------------------------- | |
1570 Opcode::Opcode(char *primary, char *secondary, char *tertiary) | |
1571 : _primary(primary), _secondary(secondary), _tertiary(tertiary) { | |
1572 } | |
1573 | |
1574 Opcode::~Opcode() { | |
1575 } | |
1576 | |
1577 Opcode::opcode_type Opcode::as_opcode_type(const char *param) { | |
1578 if( strcmp(param,"primary") == 0 ) { | |
1579 return Opcode::PRIMARY; | |
1580 } | |
1581 else if( strcmp(param,"secondary") == 0 ) { | |
1582 return Opcode::SECONDARY; | |
1583 } | |
1584 else if( strcmp(param,"tertiary") == 0 ) { | |
1585 return Opcode::TERTIARY; | |
1586 } | |
1587 return Opcode::NOT_AN_OPCODE; | |
1588 } | |
1589 | |
415
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1590 bool Opcode::print_opcode(FILE *fp, Opcode::opcode_type desired_opcode) { |
0 | 1591 // Default values previously provided by MachNode::primary()... |
415
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1592 const char *description = NULL; |
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1593 const char *value = NULL; |
0 | 1594 // Check if user provided any opcode definitions |
1595 if( this != NULL ) { | |
1596 // Update 'value' if user provided a definition in the instruction | |
1597 switch (desired_opcode) { | |
1598 case PRIMARY: | |
1599 description = "primary()"; | |
1600 if( _primary != NULL) { value = _primary; } | |
1601 break; | |
1602 case SECONDARY: | |
1603 description = "secondary()"; | |
1604 if( _secondary != NULL ) { value = _secondary; } | |
1605 break; | |
1606 case TERTIARY: | |
1607 description = "tertiary()"; | |
1608 if( _tertiary != NULL ) { value = _tertiary; } | |
1609 break; | |
1610 default: | |
1611 assert( false, "ShouldNotReachHere();"); | |
1612 break; | |
1613 } | |
1614 } | |
415
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1615 if (value != NULL) { |
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1616 fprintf(fp, "(%s /*%s*/)", value, description); |
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1617 } |
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1618 return value != NULL; |
0 | 1619 } |
1620 | |
1621 void Opcode::dump() { | |
1622 output(stderr); | |
1623 } | |
1624 | |
1625 // Write info to output files | |
1626 void Opcode::output(FILE *fp) { | |
1627 if (_primary != NULL) fprintf(fp,"Primary opcode: %s\n", _primary); | |
1628 if (_secondary != NULL) fprintf(fp,"Secondary opcode: %s\n", _secondary); | |
1629 if (_tertiary != NULL) fprintf(fp,"Tertiary opcode: %s\n", _tertiary); | |
1630 } | |
1631 | |
1632 //------------------------------InsEncode-------------------------------------- | |
1633 InsEncode::InsEncode() { | |
1634 } | |
1635 InsEncode::~InsEncode() { | |
1636 } | |
1637 | |
1638 // Add "encode class name" and its parameters | |
1639 NameAndList *InsEncode::add_encode(char *encoding) { | |
1640 assert( encoding != NULL, "Must provide name for encoding"); | |
1641 | |
1642 // add_parameter(NameList::_signal); | |
1643 NameAndList *encode = new NameAndList(encoding); | |
1644 _encoding.addName((char*)encode); | |
1645 | |
1646 return encode; | |
1647 } | |
1648 | |
1649 // Access the list of encodings | |
1650 void InsEncode::reset() { | |
1651 _encoding.reset(); | |
1652 // _parameter.reset(); | |
1653 } | |
1654 const char* InsEncode::encode_class_iter() { | |
1655 NameAndList *encode_class = (NameAndList*)_encoding.iter(); | |
1656 return ( encode_class != NULL ? encode_class->name() : NULL ); | |
1657 } | |
1658 // Obtain parameter name from zero based index | |
1659 const char *InsEncode::rep_var_name(InstructForm &inst, uint param_no) { | |
1660 NameAndList *params = (NameAndList*)_encoding.current(); | |
1661 assert( params != NULL, "Internal Error"); | |
1662 const char *param = (*params)[param_no]; | |
1663 | |
1664 // Remove '$' if parser placed it there. | |
1665 return ( param != NULL && *param == '$') ? (param+1) : param; | |
1666 } | |
1667 | |
1668 void InsEncode::dump() { | |
1669 output(stderr); | |
1670 } | |
1671 | |
1672 // Write info to output files | |
1673 void InsEncode::output(FILE *fp) { | |
1674 NameAndList *encoding = NULL; | |
1675 const char *parameter = NULL; | |
1676 | |
1677 fprintf(fp,"InsEncode: "); | |
1678 _encoding.reset(); | |
1679 | |
1680 while ( (encoding = (NameAndList*)_encoding.iter()) != 0 ) { | |
1681 // Output the encoding being used | |
1682 fprintf(fp,"%s(", encoding->name() ); | |
1683 | |
1684 // Output its parameter list, if any | |
1685 bool first_param = true; | |
1686 encoding->reset(); | |
1687 while ( (parameter = encoding->iter()) != 0 ) { | |
1688 // Output the ',' between parameters | |
1689 if ( ! first_param ) fprintf(fp,", "); | |
1690 first_param = false; | |
1691 // Output the parameter | |
1692 fprintf(fp,"%s", parameter); | |
1693 } // done with parameters | |
1694 fprintf(fp,") "); | |
1695 } // done with encodings | |
1696 | |
1697 fprintf(fp,"\n"); | |
1698 } | |
1699 | |
1700 //------------------------------Effect----------------------------------------- | |
1701 static int effect_lookup(const char *name) { | |
1702 if(!strcmp(name, "USE")) return Component::USE; | |
1703 if(!strcmp(name, "DEF")) return Component::DEF; | |
1704 if(!strcmp(name, "USE_DEF")) return Component::USE_DEF; | |
1705 if(!strcmp(name, "KILL")) return Component::KILL; | |
1706 if(!strcmp(name, "USE_KILL")) return Component::USE_KILL; | |
1707 if(!strcmp(name, "TEMP")) return Component::TEMP; | |
1708 if(!strcmp(name, "INVALID")) return Component::INVALID; | |
1709 assert( false,"Invalid effect name specified\n"); | |
1710 return Component::INVALID; | |
1711 } | |
1712 | |
1713 Effect::Effect(const char *name) : _name(name), _use_def(effect_lookup(name)) { | |
1714 _ftype = Form::EFF; | |
1715 } | |
1716 Effect::~Effect() { | |
1717 } | |
1718 | |
1719 // Dynamic type check | |
1720 Effect *Effect::is_effect() const { | |
1721 return (Effect*)this; | |
1722 } | |
1723 | |
1724 | |
1725 // True if this component is equal to the parameter. | |
1726 bool Effect::is(int use_def_kill_enum) const { | |
1727 return (_use_def == use_def_kill_enum ? true : false); | |
1728 } | |
1729 // True if this component is used/def'd/kill'd as the parameter suggests. | |
1730 bool Effect::isa(int use_def_kill_enum) const { | |
1731 return (_use_def & use_def_kill_enum) == use_def_kill_enum; | |
1732 } | |
1733 | |
1734 void Effect::dump() { | |
1735 output(stderr); | |
1736 } | |
1737 | |
1738 void Effect::output(FILE *fp) { // Write info to output files | |
1739 fprintf(fp,"Effect: %s\n", (_name?_name:"")); | |
1740 } | |
1741 | |
1742 //------------------------------ExpandRule------------------------------------- | |
1743 ExpandRule::ExpandRule() : _expand_instrs(), | |
1744 _newopconst(cmpstr, hashstr, Form::arena) { | |
1745 _ftype = Form::EXP; | |
1746 } | |
1747 | |
1748 ExpandRule::~ExpandRule() { // Destructor | |
1749 } | |
1750 | |
1751 void ExpandRule::add_instruction(NameAndList *instruction_name_and_operand_list) { | |
1752 _expand_instrs.addName((char*)instruction_name_and_operand_list); | |
1753 } | |
1754 | |
1755 void ExpandRule::reset_instructions() { | |
1756 _expand_instrs.reset(); | |
1757 } | |
1758 | |
1759 NameAndList* ExpandRule::iter_instructions() { | |
1760 return (NameAndList*)_expand_instrs.iter(); | |
1761 } | |
1762 | |
1763 | |
1764 void ExpandRule::dump() { | |
1765 output(stderr); | |
1766 } | |
1767 | |
1768 void ExpandRule::output(FILE *fp) { // Write info to output files | |
1769 NameAndList *expand_instr = NULL; | |
1770 const char *opid = NULL; | |
1771 | |
1772 fprintf(fp,"\nExpand Rule:\n"); | |
1773 | |
1774 // Iterate over the instructions 'node' expands into | |
1775 for(reset_instructions(); (expand_instr = iter_instructions()) != NULL; ) { | |
1776 fprintf(fp,"%s(", expand_instr->name()); | |
1777 | |
1778 // iterate over the operand list | |
1779 for( expand_instr->reset(); (opid = expand_instr->iter()) != NULL; ) { | |
1780 fprintf(fp,"%s ", opid); | |
1781 } | |
1782 fprintf(fp,");\n"); | |
1783 } | |
1784 } | |
1785 | |
1786 //------------------------------RewriteRule------------------------------------ | |
1787 RewriteRule::RewriteRule(char* params, char* block) | |
1788 : _tempParams(params), _tempBlock(block) { }; // Constructor | |
1789 RewriteRule::~RewriteRule() { // Destructor | |
1790 } | |
1791 | |
1792 void RewriteRule::dump() { | |
1793 output(stderr); | |
1794 } | |
1795 | |
1796 void RewriteRule::output(FILE *fp) { // Write info to output files | |
1797 fprintf(fp,"\nRewrite Rule:\n%s\n%s\n", | |
1798 (_tempParams?_tempParams:""), | |
1799 (_tempBlock?_tempBlock:"")); | |
1800 } | |
1801 | |
1802 | |
1803 //==============================MachNodes====================================== | |
1804 //------------------------------MachNodeForm----------------------------------- | |
1805 MachNodeForm::MachNodeForm(char *id) | |
1806 : _ident(id) { | |
1807 } | |
1808 | |
1809 MachNodeForm::~MachNodeForm() { | |
1810 } | |
1811 | |
1812 MachNodeForm *MachNodeForm::is_machnode() const { | |
1813 return (MachNodeForm*)this; | |
1814 } | |
1815 | |
1816 //==============================Operand Classes================================ | |
1817 //------------------------------OpClassForm------------------------------------ | |
1818 OpClassForm::OpClassForm(const char* id) : _ident(id) { | |
1819 _ftype = Form::OPCLASS; | |
1820 } | |
1821 | |
1822 OpClassForm::~OpClassForm() { | |
1823 } | |
1824 | |
1825 bool OpClassForm::ideal_only() const { return 0; } | |
1826 | |
1827 OpClassForm *OpClassForm::is_opclass() const { | |
1828 return (OpClassForm*)this; | |
1829 } | |
1830 | |
1831 Form::InterfaceType OpClassForm::interface_type(FormDict &globals) const { | |
1832 if( _oplst.count() == 0 ) return Form::no_interface; | |
1833 | |
1834 // Check that my operands have the same interface type | |
1835 Form::InterfaceType interface; | |
1836 bool first = true; | |
1837 NameList &op_list = (NameList &)_oplst; | |
1838 op_list.reset(); | |
1839 const char *op_name; | |
1840 while( (op_name = op_list.iter()) != NULL ) { | |
1841 const Form *form = globals[op_name]; | |
1842 OperandForm *operand = form->is_operand(); | |
1843 assert( operand, "Entry in operand class that is not an operand"); | |
1844 if( first ) { | |
1845 first = false; | |
1846 interface = operand->interface_type(globals); | |
1847 } else { | |
1848 interface = (interface == operand->interface_type(globals) ? interface : Form::no_interface); | |
1849 } | |
1850 } | |
1851 return interface; | |
1852 } | |
1853 | |
1854 bool OpClassForm::stack_slots_only(FormDict &globals) const { | |
1855 if( _oplst.count() == 0 ) return false; // how? | |
1856 | |
1857 NameList &op_list = (NameList &)_oplst; | |
1858 op_list.reset(); | |
1859 const char *op_name; | |
1860 while( (op_name = op_list.iter()) != NULL ) { | |
1861 const Form *form = globals[op_name]; | |
1862 OperandForm *operand = form->is_operand(); | |
1863 assert( operand, "Entry in operand class that is not an operand"); | |
1864 if( !operand->stack_slots_only(globals) ) return false; | |
1865 } | |
1866 return true; | |
1867 } | |
1868 | |
1869 | |
1870 void OpClassForm::dump() { | |
1871 output(stderr); | |
1872 } | |
1873 | |
1874 void OpClassForm::output(FILE *fp) { | |
1875 const char *name; | |
1876 fprintf(fp,"\nOperand Class: %s\n", (_ident?_ident:"")); | |
1877 fprintf(fp,"\nCount = %d\n", _oplst.count()); | |
1878 for(_oplst.reset(); (name = _oplst.iter()) != NULL;) { | |
1879 fprintf(fp,"%s, ",name); | |
1880 } | |
1881 fprintf(fp,"\n"); | |
1882 } | |
1883 | |
1884 | |
1885 //==============================Operands======================================= | |
1886 //------------------------------OperandForm------------------------------------ | |
1887 OperandForm::OperandForm(const char* id) | |
1888 : OpClassForm(id), _ideal_only(false), | |
1889 _localNames(cmpstr, hashstr, Form::arena) { | |
1890 _ftype = Form::OPER; | |
1891 | |
1892 _matrule = NULL; | |
1893 _interface = NULL; | |
1894 _attribs = NULL; | |
1895 _predicate = NULL; | |
1896 _constraint= NULL; | |
1897 _construct = NULL; | |
1898 _format = NULL; | |
1899 } | |
1900 OperandForm::OperandForm(const char* id, bool ideal_only) | |
1901 : OpClassForm(id), _ideal_only(ideal_only), | |
1902 _localNames(cmpstr, hashstr, Form::arena) { | |
1903 _ftype = Form::OPER; | |
1904 | |
1905 _matrule = NULL; | |
1906 _interface = NULL; | |
1907 _attribs = NULL; | |
1908 _predicate = NULL; | |
1909 _constraint= NULL; | |
1910 _construct = NULL; | |
1911 _format = NULL; | |
1912 } | |
1913 OperandForm::~OperandForm() { | |
1914 } | |
1915 | |
1916 | |
1917 OperandForm *OperandForm::is_operand() const { | |
1918 return (OperandForm*)this; | |
1919 } | |
1920 | |
1921 bool OperandForm::ideal_only() const { | |
1922 return _ideal_only; | |
1923 } | |
1924 | |
1925 Form::InterfaceType OperandForm::interface_type(FormDict &globals) const { | |
1926 if( _interface == NULL ) return Form::no_interface; | |
1927 | |
1928 return _interface->interface_type(globals); | |
1929 } | |
1930 | |
1931 | |
1932 bool OperandForm::stack_slots_only(FormDict &globals) const { | |
1933 if( _constraint == NULL ) return false; | |
1934 return _constraint->stack_slots_only(); | |
1935 } | |
1936 | |
1937 | |
1938 // Access op_cost attribute or return NULL. | |
1939 const char* OperandForm::cost() { | |
1940 for (Attribute* cur = _attribs; cur != NULL; cur = (Attribute*)cur->_next) { | |
1941 if( strcmp(cur->_ident,AttributeForm::_op_cost) == 0 ) { | |
1942 return cur->_val; | |
1943 } | |
1944 } | |
1945 return NULL; | |
1946 } | |
1947 | |
1948 // Return the number of leaves below this complex operand | |
1949 uint OperandForm::num_leaves() const { | |
1950 if ( ! _matrule) return 0; | |
1951 | |
1952 int num_leaves = _matrule->_numleaves; | |
1953 return num_leaves; | |
1954 } | |
1955 | |
1956 // Return the number of constants contained within this complex operand | |
1957 uint OperandForm::num_consts(FormDict &globals) const { | |
1958 if ( ! _matrule) return 0; | |
1959 | |
1960 // This is a recursive invocation on all operands in the matchrule | |
1961 return _matrule->num_consts(globals); | |
1962 } | |
1963 | |
1964 // Return the number of constants in match rule with specified type | |
1965 uint OperandForm::num_consts(FormDict &globals, Form::DataType type) const { | |
1966 if ( ! _matrule) return 0; | |
1967 | |
1968 // This is a recursive invocation on all operands in the matchrule | |
1969 return _matrule->num_consts(globals, type); | |
1970 } | |
1971 | |
1972 // Return the number of pointer constants contained within this complex operand | |
1973 uint OperandForm::num_const_ptrs(FormDict &globals) const { | |
1974 if ( ! _matrule) return 0; | |
1975 | |
1976 // This is a recursive invocation on all operands in the matchrule | |
1977 return _matrule->num_const_ptrs(globals); | |
1978 } | |
1979 | |
1980 uint OperandForm::num_edges(FormDict &globals) const { | |
1981 uint edges = 0; | |
1982 uint leaves = num_leaves(); | |
1983 uint consts = num_consts(globals); | |
1984 | |
1985 // If we are matching a constant directly, there are no leaves. | |
1986 edges = ( leaves > consts ) ? leaves - consts : 0; | |
1987 | |
1988 // !!!!! | |
1989 // Special case operands that do not have a corresponding ideal node. | |
1990 if( (edges == 0) && (consts == 0) ) { | |
1991 if( constrained_reg_class() != NULL ) { | |
1992 edges = 1; | |
1993 } else { | |
1994 if( _matrule | |
1995 && (_matrule->_lChild == NULL) && (_matrule->_rChild == NULL) ) { | |
1996 const Form *form = globals[_matrule->_opType]; | |
1997 OperandForm *oper = form ? form->is_operand() : NULL; | |
1998 if( oper ) { | |
1999 return oper->num_edges(globals); | |
2000 } | |
2001 } | |
2002 } | |
2003 } | |
2004 | |
2005 return edges; | |
2006 } | |
2007 | |
2008 | |
2009 // Check if this operand is usable for cisc-spilling | |
2010 bool OperandForm::is_cisc_reg(FormDict &globals) const { | |
2011 const char *ideal = ideal_type(globals); | |
2012 bool is_cisc_reg = (ideal && (ideal_to_Reg_type(ideal) != none)); | |
2013 return is_cisc_reg; | |
2014 } | |
2015 | |
2016 bool OpClassForm::is_cisc_mem(FormDict &globals) const { | |
2017 Form::InterfaceType my_interface = interface_type(globals); | |
2018 return (my_interface == memory_interface); | |
2019 } | |
2020 | |
2021 | |
2022 // node matches ideal 'Bool' | |
2023 bool OperandForm::is_ideal_bool() const { | |
2024 if( _matrule == NULL ) return false; | |
2025 | |
2026 return _matrule->is_ideal_bool(); | |
2027 } | |
2028 | |
2029 // Require user's name for an sRegX to be stackSlotX | |
2030 Form::DataType OperandForm::is_user_name_for_sReg() const { | |
2031 DataType data_type = none; | |
2032 if( _ident != NULL ) { | |
2033 if( strcmp(_ident,"stackSlotI") == 0 ) data_type = Form::idealI; | |
2034 else if( strcmp(_ident,"stackSlotP") == 0 ) data_type = Form::idealP; | |
2035 else if( strcmp(_ident,"stackSlotD") == 0 ) data_type = Form::idealD; | |
2036 else if( strcmp(_ident,"stackSlotF") == 0 ) data_type = Form::idealF; | |
2037 else if( strcmp(_ident,"stackSlotL") == 0 ) data_type = Form::idealL; | |
2038 } | |
2039 assert((data_type == none) || (_matrule == NULL), "No match-rule for stackSlotX"); | |
2040 | |
2041 return data_type; | |
2042 } | |
2043 | |
2044 | |
2045 // Return ideal type, if there is a single ideal type for this operand | |
2046 const char *OperandForm::ideal_type(FormDict &globals, RegisterForm *registers) const { | |
2047 const char *type = NULL; | |
2048 if (ideal_only()) type = _ident; | |
2049 else if( _matrule == NULL ) { | |
2050 // Check for condition code register | |
2051 const char *rc_name = constrained_reg_class(); | |
2052 // !!!!! | |
2053 if (rc_name == NULL) return NULL; | |
2054 // !!!!! !!!!! | |
2055 // Check constraints on result's register class | |
2056 if( registers ) { | |
2057 RegClass *reg_class = registers->getRegClass(rc_name); | |
2058 assert( reg_class != NULL, "Register class is not defined"); | |
2059 | |
2060 // Check for ideal type of entries in register class, all are the same type | |
2061 reg_class->reset(); | |
2062 RegDef *reg_def = reg_class->RegDef_iter(); | |
2063 assert( reg_def != NULL, "No entries in register class"); | |
2064 assert( reg_def->_idealtype != NULL, "Did not define ideal type for register"); | |
2065 // Return substring that names the register's ideal type | |
2066 type = reg_def->_idealtype + 3; | |
2067 assert( *(reg_def->_idealtype + 0) == 'O', "Expect Op_ prefix"); | |
2068 assert( *(reg_def->_idealtype + 1) == 'p', "Expect Op_ prefix"); | |
2069 assert( *(reg_def->_idealtype + 2) == '_', "Expect Op_ prefix"); | |
2070 } | |
2071 } | |
2072 else if( _matrule->_lChild == NULL && _matrule->_rChild == NULL ) { | |
2073 // This operand matches a single type, at the top level. | |
2074 // Check for ideal type | |
2075 type = _matrule->_opType; | |
2076 if( strcmp(type,"Bool") == 0 ) | |
2077 return "Bool"; | |
2078 // transitive lookup | |
2079 const Form *frm = globals[type]; | |
2080 OperandForm *op = frm->is_operand(); | |
2081 type = op->ideal_type(globals, registers); | |
2082 } | |
2083 return type; | |
2084 } | |
2085 | |
2086 | |
2087 // If there is a single ideal type for this interface field, return it. | |
2088 const char *OperandForm::interface_ideal_type(FormDict &globals, | |
2089 const char *field) const { | |
2090 const char *ideal_type = NULL; | |
2091 const char *value = NULL; | |
2092 | |
2093 // Check if "field" is valid for this operand's interface | |
2094 if ( ! is_interface_field(field, value) ) return ideal_type; | |
2095 | |
2096 // !!!!! !!!!! !!!!! | |
2097 // If a valid field has a constant value, identify "ConI" or "ConP" or ... | |
2098 | |
2099 // Else, lookup type of field's replacement variable | |
2100 | |
2101 return ideal_type; | |
2102 } | |
2103 | |
2104 | |
2105 RegClass* OperandForm::get_RegClass() const { | |
2106 if (_interface && !_interface->is_RegInterface()) return NULL; | |
2107 return globalAD->get_registers()->getRegClass(constrained_reg_class()); | |
2108 } | |
2109 | |
2110 | |
2111 bool OperandForm::is_bound_register() const { | |
2112 RegClass *reg_class = get_RegClass(); | |
2113 if (reg_class == NULL) return false; | |
2114 | |
2115 const char * name = ideal_type(globalAD->globalNames()); | |
2116 if (name == NULL) return false; | |
2117 | |
2118 int size = 0; | |
2119 if (strcmp(name,"RegFlags")==0) size = 1; | |
2120 if (strcmp(name,"RegI")==0) size = 1; | |
2121 if (strcmp(name,"RegF")==0) size = 1; | |
2122 if (strcmp(name,"RegD")==0) size = 2; | |
2123 if (strcmp(name,"RegL")==0) size = 2; | |
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2124 if (strcmp(name,"RegN")==0) size = 1; |
0 | 2125 if (strcmp(name,"RegP")==0) size = globalAD->get_preproc_def("_LP64") ? 2 : 1; |
2126 if (size == 0) return false; | |
2127 return size == reg_class->size(); | |
2128 } | |
2129 | |
2130 | |
2131 // Check if this is a valid field for this operand, | |
2132 // Return 'true' if valid, and set the value to the string the user provided. | |
2133 bool OperandForm::is_interface_field(const char *field, | |
2134 const char * &value) const { | |
2135 return false; | |
2136 } | |
2137 | |
2138 | |
2139 // Return register class name if a constraint specifies the register class. | |
2140 const char *OperandForm::constrained_reg_class() const { | |
2141 const char *reg_class = NULL; | |
2142 if ( _constraint ) { | |
2143 // !!!!! | |
2144 Constraint *constraint = _constraint; | |
2145 if ( strcmp(_constraint->_func,"ALLOC_IN_RC") == 0 ) { | |
2146 reg_class = _constraint->_arg; | |
2147 } | |
2148 } | |
2149 | |
2150 return reg_class; | |
2151 } | |
2152 | |
2153 | |
2154 // Return the register class associated with 'leaf'. | |
2155 const char *OperandForm::in_reg_class(uint leaf, FormDict &globals) { | |
2156 const char *reg_class = NULL; // "RegMask::Empty"; | |
2157 | |
2158 if((_matrule == NULL) || (_matrule->is_chain_rule(globals))) { | |
2159 reg_class = constrained_reg_class(); | |
2160 return reg_class; | |
2161 } | |
2162 const char *result = NULL; | |
2163 const char *name = NULL; | |
2164 const char *type = NULL; | |
2165 // iterate through all base operands | |
2166 // until we reach the register that corresponds to "leaf" | |
2167 // This function is not looking for an ideal type. It needs the first | |
2168 // level user type associated with the leaf. | |
2169 for(uint idx = 0;_matrule->base_operand(idx,globals,result,name,type);++idx) { | |
2170 const Form *form = (_localNames[name] ? _localNames[name] : globals[result]); | |
2171 OperandForm *oper = form ? form->is_operand() : NULL; | |
2172 if( oper ) { | |
2173 reg_class = oper->constrained_reg_class(); | |
2174 if( reg_class ) { | |
2175 reg_class = reg_class; | |
2176 } else { | |
2177 // ShouldNotReachHere(); | |
2178 } | |
2179 } else { | |
2180 // ShouldNotReachHere(); | |
2181 } | |
2182 | |
2183 // Increment our target leaf position if current leaf is not a candidate. | |
2184 if( reg_class == NULL) ++leaf; | |
2185 // Exit the loop with the value of reg_class when at the correct index | |
2186 if( idx == leaf ) break; | |
2187 // May iterate through all base operands if reg_class for 'leaf' is NULL | |
2188 } | |
2189 return reg_class; | |
2190 } | |
2191 | |
2192 | |
2193 // Recursive call to construct list of top-level operands. | |
2194 // Implementation does not modify state of internal structures | |
2195 void OperandForm::build_components() { | |
2196 if (_matrule) _matrule->append_components(_localNames, _components); | |
2197 | |
2198 // Add parameters that "do not appear in match rule". | |
2199 const char *name; | |
2200 for (_parameters.reset(); (name = _parameters.iter()) != NULL;) { | |
2201 OperandForm *opForm = (OperandForm*)_localNames[name]; | |
2202 | |
2203 if ( _components.operand_position(name) == -1 ) { | |
2204 _components.insert(name, opForm->_ident, Component::INVALID, false); | |
2205 } | |
2206 } | |
2207 | |
2208 return; | |
2209 } | |
2210 | |
2211 int OperandForm::operand_position(const char *name, int usedef) { | |
2212 return _components.operand_position(name, usedef); | |
2213 } | |
2214 | |
2215 | |
2216 // Return zero-based position in component list, only counting constants; | |
2217 // Return -1 if not in list. | |
2218 int OperandForm::constant_position(FormDict &globals, const Component *last) { | |
605 | 2219 // Iterate through components and count constants preceding 'constant' |
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2220 int position = 0; |
0 | 2221 Component *comp; |
2222 _components.reset(); | |
2223 while( (comp = _components.iter()) != NULL && (comp != last) ) { | |
2224 // Special case for operands that take a single user-defined operand | |
2225 // Skip the initial definition in the component list. | |
2226 if( strcmp(comp->_name,this->_ident) == 0 ) continue; | |
2227 | |
2228 const char *type = comp->_type; | |
2229 // Lookup operand form for replacement variable's type | |
2230 const Form *form = globals[type]; | |
2231 assert( form != NULL, "Component's type not found"); | |
2232 OperandForm *oper = form ? form->is_operand() : NULL; | |
2233 if( oper ) { | |
2234 if( oper->_matrule->is_base_constant(globals) != Form::none ) { | |
2235 ++position; | |
2236 } | |
2237 } | |
2238 } | |
2239 | |
2240 // Check for being passed a component that was not in the list | |
2241 if( comp != last ) position = -1; | |
2242 | |
2243 return position; | |
2244 } | |
2245 // Provide position of constant by "name" | |
2246 int OperandForm::constant_position(FormDict &globals, const char *name) { | |
2247 const Component *comp = _components.search(name); | |
2248 int idx = constant_position( globals, comp ); | |
2249 | |
2250 return idx; | |
2251 } | |
2252 | |
2253 | |
2254 // Return zero-based position in component list, only counting constants; | |
2255 // Return -1 if not in list. | |
2256 int OperandForm::register_position(FormDict &globals, const char *reg_name) { | |
605 | 2257 // Iterate through components and count registers preceding 'last' |
0 | 2258 uint position = 0; |
2259 Component *comp; | |
2260 _components.reset(); | |
2261 while( (comp = _components.iter()) != NULL | |
2262 && (strcmp(comp->_name,reg_name) != 0) ) { | |
2263 // Special case for operands that take a single user-defined operand | |
2264 // Skip the initial definition in the component list. | |
2265 if( strcmp(comp->_name,this->_ident) == 0 ) continue; | |
2266 | |
2267 const char *type = comp->_type; | |
2268 // Lookup operand form for component's type | |
2269 const Form *form = globals[type]; | |
2270 assert( form != NULL, "Component's type not found"); | |
2271 OperandForm *oper = form ? form->is_operand() : NULL; | |
2272 if( oper ) { | |
2273 if( oper->_matrule->is_base_register(globals) ) { | |
2274 ++position; | |
2275 } | |
2276 } | |
2277 } | |
2278 | |
2279 return position; | |
2280 } | |
2281 | |
2282 | |
2283 const char *OperandForm::reduce_result() const { | |
2284 return _ident; | |
2285 } | |
2286 // Return the name of the operand on the right hand side of the binary match | |
2287 // Return NULL if there is no right hand side | |
2288 const char *OperandForm::reduce_right(FormDict &globals) const { | |
2289 return ( _matrule ? _matrule->reduce_right(globals) : NULL ); | |
2290 } | |
2291 | |
2292 // Similar for left | |
2293 const char *OperandForm::reduce_left(FormDict &globals) const { | |
2294 return ( _matrule ? _matrule->reduce_left(globals) : NULL ); | |
2295 } | |
2296 | |
2297 | |
2298 // --------------------------- FILE *output_routines | |
2299 // | |
2300 // Output code for disp_is_oop, if true. | |
2301 void OperandForm::disp_is_oop(FILE *fp, FormDict &globals) { | |
2302 // Check it is a memory interface with a non-user-constant disp field | |
2303 if ( this->_interface == NULL ) return; | |
2304 MemInterface *mem_interface = this->_interface->is_MemInterface(); | |
2305 if ( mem_interface == NULL ) return; | |
2306 const char *disp = mem_interface->_disp; | |
2307 if ( *disp != '$' ) return; | |
2308 | |
2309 // Lookup replacement variable in operand's component list | |
2310 const char *rep_var = disp + 1; | |
2311 const Component *comp = this->_components.search(rep_var); | |
2312 assert( comp != NULL, "Replacement variable not found in components"); | |
2313 // Lookup operand form for replacement variable's type | |
2314 const char *type = comp->_type; | |
2315 Form *form = (Form*)globals[type]; | |
2316 assert( form != NULL, "Replacement variable's type not found"); | |
2317 OperandForm *op = form->is_operand(); | |
2318 assert( op, "Memory Interface 'disp' can only emit an operand form"); | |
2319 // Check if this is a ConP, which may require relocation | |
2320 if ( op->is_base_constant(globals) == Form::idealP ) { | |
2321 // Find the constant's index: _c0, _c1, _c2, ... , _cN | |
2322 uint idx = op->constant_position( globals, rep_var); | |
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2323 fprintf(fp," virtual bool disp_is_oop() const {"); |
0 | 2324 fprintf(fp, " return _c%d->isa_oop_ptr();", idx); |
2325 fprintf(fp, " }\n"); | |
2326 } | |
2327 } | |
2328 | |
2329 // Generate code for internal and external format methods | |
2330 // | |
2331 // internal access to reg# node->_idx | |
2332 // access to subsumed constant _c0, _c1, | |
2333 void OperandForm::int_format(FILE *fp, FormDict &globals, uint index) { | |
2334 Form::DataType dtype; | |
2335 if (_matrule && (_matrule->is_base_register(globals) || | |
2336 strcmp(ideal_type(globalAD->globalNames()), "RegFlags") == 0)) { | |
2337 // !!!!! !!!!! | |
2338 fprintf(fp, "{ char reg_str[128];\n"); | |
2339 fprintf(fp," ra->dump_register(node,reg_str);\n"); | |
2340 fprintf(fp," tty->print(\"%cs\",reg_str);\n",'%'); | |
2341 fprintf(fp," }\n"); | |
2342 } else if (_matrule && (dtype = _matrule->is_base_constant(globals)) != Form::none) { | |
2343 format_constant( fp, index, dtype ); | |
2344 } else if (ideal_to_sReg_type(_ident) != Form::none) { | |
2345 // Special format for Stack Slot Register | |
2346 fprintf(fp, "{ char reg_str[128];\n"); | |
2347 fprintf(fp," ra->dump_register(node,reg_str);\n"); | |
2348 fprintf(fp," tty->print(\"%cs\",reg_str);\n",'%'); | |
2349 fprintf(fp," }\n"); | |
2350 } else { | |
2351 fprintf(fp,"tty->print(\"No format defined for %s\n\");\n", _ident); | |
2352 fflush(fp); | |
2353 fprintf(stderr,"No format defined for %s\n", _ident); | |
2354 dump(); | |
2355 assert( false,"Internal error:\n output_internal_operand() attempting to output other than a Register or Constant"); | |
2356 } | |
2357 } | |
2358 | |
2359 // Similar to "int_format" but for cases where data is external to operand | |
2360 // external access to reg# node->in(idx)->_idx, | |
2361 void OperandForm::ext_format(FILE *fp, FormDict &globals, uint index) { | |
2362 Form::DataType dtype; | |
2363 if (_matrule && (_matrule->is_base_register(globals) || | |
2364 strcmp(ideal_type(globalAD->globalNames()), "RegFlags") == 0)) { | |
2365 fprintf(fp, "{ char reg_str[128];\n"); | |
2366 fprintf(fp," ra->dump_register(node->in(idx"); | |
2367 if ( index != 0 ) fprintf(fp, "+%d",index); | |
2368 fprintf(fp, "),reg_str);\n"); | |
2369 fprintf(fp," tty->print(\"%cs\",reg_str);\n",'%'); | |
2370 fprintf(fp," }\n"); | |
2371 } else if (_matrule && (dtype = _matrule->is_base_constant(globals)) != Form::none) { | |
2372 format_constant( fp, index, dtype ); | |
2373 } else if (ideal_to_sReg_type(_ident) != Form::none) { | |
2374 // Special format for Stack Slot Register | |
2375 fprintf(fp, "{ char reg_str[128];\n"); | |
2376 fprintf(fp," ra->dump_register(node->in(idx"); | |
2377 if ( index != 0 ) fprintf(fp, "+%d",index); | |
2378 fprintf(fp, "),reg_str);\n"); | |
2379 fprintf(fp," tty->print(\"%cs\",reg_str);\n",'%'); | |
2380 fprintf(fp," }\n"); | |
2381 } else { | |
2382 fprintf(fp,"tty->print(\"No format defined for %s\n\");\n", _ident); | |
2383 assert( false,"Internal error:\n output_external_operand() attempting to output other than a Register or Constant"); | |
2384 } | |
2385 } | |
2386 | |
2387 void OperandForm::format_constant(FILE *fp, uint const_index, uint const_type) { | |
2388 switch(const_type) { | |
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2389 case Form::idealI: fprintf(fp,"st->print(\"#%%d\", _c%d);\n", const_index); break; |
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2390 case Form::idealP: fprintf(fp,"_c%d->dump_on(st);\n", const_index); break; |
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2391 case Form::idealN: fprintf(fp,"_c%d->dump_on(st);\n", const_index); break; |
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2392 case Form::idealL: fprintf(fp,"st->print(\"#%%lld\", _c%d);\n", const_index); break; |
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2393 case Form::idealF: fprintf(fp,"st->print(\"#%%f\", _c%d);\n", const_index); break; |
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2394 case Form::idealD: fprintf(fp,"st->print(\"#%%f\", _c%d);\n", const_index); break; |
0 | 2395 default: |
2396 assert( false, "ShouldNotReachHere()"); | |
2397 } | |
2398 } | |
2399 | |
2400 // Return the operand form corresponding to the given index, else NULL. | |
2401 OperandForm *OperandForm::constant_operand(FormDict &globals, | |
2402 uint index) { | |
2403 // !!!!! | |
2404 // Check behavior on complex operands | |
2405 uint n_consts = num_consts(globals); | |
2406 if( n_consts > 0 ) { | |
2407 uint i = 0; | |
2408 const char *type; | |
2409 Component *comp; | |
2410 _components.reset(); | |
2411 if ((comp = _components.iter()) == NULL) { | |
2412 assert(n_consts == 1, "Bad component list detected.\n"); | |
2413 // Current operand is THE operand | |
2414 if ( index == 0 ) { | |
2415 return this; | |
2416 } | |
2417 } // end if NULL | |
2418 else { | |
2419 // Skip the first component, it can not be a DEF of a constant | |
2420 do { | |
2421 type = comp->base_type(globals); | |
2422 // Check that "type" is a 'ConI', 'ConP', ... | |
2423 if ( ideal_to_const_type(type) != Form::none ) { | |
2424 // When at correct component, get corresponding Operand | |
2425 if ( index == 0 ) { | |
2426 return globals[comp->_type]->is_operand(); | |
2427 } | |
2428 // Decrement number of constants to go | |
2429 --index; | |
2430 } | |
2431 } while((comp = _components.iter()) != NULL); | |
2432 } | |
2433 } | |
2434 | |
2435 // Did not find a constant for this index. | |
2436 return NULL; | |
2437 } | |
2438 | |
2439 // If this operand has a single ideal type, return its type | |
2440 Form::DataType OperandForm::simple_type(FormDict &globals) const { | |
2441 const char *type_name = ideal_type(globals); | |
2442 Form::DataType type = type_name ? ideal_to_const_type( type_name ) | |
2443 : Form::none; | |
2444 return type; | |
2445 } | |
2446 | |
2447 Form::DataType OperandForm::is_base_constant(FormDict &globals) const { | |
2448 if ( _matrule == NULL ) return Form::none; | |
2449 | |
2450 return _matrule->is_base_constant(globals); | |
2451 } | |
2452 | |
2453 // "true" if this operand is a simple type that is swallowed | |
2454 bool OperandForm::swallowed(FormDict &globals) const { | |
2455 Form::DataType type = simple_type(globals); | |
2456 if( type != Form::none ) { | |
2457 return true; | |
2458 } | |
2459 | |
2460 return false; | |
2461 } | |
2462 | |
2463 // Output code to access the value of the index'th constant | |
2464 void OperandForm::access_constant(FILE *fp, FormDict &globals, | |
2465 uint const_index) { | |
2466 OperandForm *oper = constant_operand(globals, const_index); | |
2467 assert( oper, "Index exceeds number of constants in operand"); | |
2468 Form::DataType dtype = oper->is_base_constant(globals); | |
2469 | |
2470 switch(dtype) { | |
2471 case idealI: fprintf(fp,"_c%d", const_index); break; | |
2472 case idealP: fprintf(fp,"_c%d->get_con()",const_index); break; | |
2473 case idealL: fprintf(fp,"_c%d", const_index); break; | |
2474 case idealF: fprintf(fp,"_c%d", const_index); break; | |
2475 case idealD: fprintf(fp,"_c%d", const_index); break; | |
2476 default: | |
2477 assert( false, "ShouldNotReachHere()"); | |
2478 } | |
2479 } | |
2480 | |
2481 | |
2482 void OperandForm::dump() { | |
2483 output(stderr); | |
2484 } | |
2485 | |
2486 void OperandForm::output(FILE *fp) { | |
2487 fprintf(fp,"\nOperand: %s\n", (_ident?_ident:"")); | |
2488 if (_matrule) _matrule->dump(); | |
2489 if (_interface) _interface->dump(); | |
2490 if (_attribs) _attribs->dump(); | |
2491 if (_predicate) _predicate->dump(); | |
2492 if (_constraint) _constraint->dump(); | |
2493 if (_construct) _construct->dump(); | |
2494 if (_format) _format->dump(); | |
2495 } | |
2496 | |
2497 //------------------------------Constraint------------------------------------- | |
2498 Constraint::Constraint(const char *func, const char *arg) | |
2499 : _func(func), _arg(arg) { | |
2500 } | |
2501 Constraint::~Constraint() { /* not owner of char* */ | |
2502 } | |
2503 | |
2504 bool Constraint::stack_slots_only() const { | |
2505 return strcmp(_func, "ALLOC_IN_RC") == 0 | |
2506 && strcmp(_arg, "stack_slots") == 0; | |
2507 } | |
2508 | |
2509 void Constraint::dump() { | |
2510 output(stderr); | |
2511 } | |
2512 | |
2513 void Constraint::output(FILE *fp) { // Write info to output files | |
2514 assert((_func != NULL && _arg != NULL),"missing constraint function or arg"); | |
2515 fprintf(fp,"Constraint: %s ( %s )\n", _func, _arg); | |
2516 } | |
2517 | |
2518 //------------------------------Predicate-------------------------------------- | |
2519 Predicate::Predicate(char *pr) | |
2520 : _pred(pr) { | |
2521 } | |
2522 Predicate::~Predicate() { | |
2523 } | |
2524 | |
2525 void Predicate::dump() { | |
2526 output(stderr); | |
2527 } | |
2528 | |
2529 void Predicate::output(FILE *fp) { | |
2530 fprintf(fp,"Predicate"); // Write to output files | |
2531 } | |
2532 //------------------------------Interface-------------------------------------- | |
2533 Interface::Interface(const char *name) : _name(name) { | |
2534 } | |
2535 Interface::~Interface() { | |
2536 } | |
2537 | |
2538 Form::InterfaceType Interface::interface_type(FormDict &globals) const { | |
2539 Interface *thsi = (Interface*)this; | |
2540 if ( thsi->is_RegInterface() ) return Form::register_interface; | |
2541 if ( thsi->is_MemInterface() ) return Form::memory_interface; | |
2542 if ( thsi->is_ConstInterface() ) return Form::constant_interface; | |
2543 if ( thsi->is_CondInterface() ) return Form::conditional_interface; | |
2544 | |
2545 return Form::no_interface; | |
2546 } | |
2547 | |
2548 RegInterface *Interface::is_RegInterface() { | |
2549 if ( strcmp(_name,"REG_INTER") != 0 ) | |
2550 return NULL; | |
2551 return (RegInterface*)this; | |
2552 } | |
2553 MemInterface *Interface::is_MemInterface() { | |
2554 if ( strcmp(_name,"MEMORY_INTER") != 0 ) return NULL; | |
2555 return (MemInterface*)this; | |
2556 } | |
2557 ConstInterface *Interface::is_ConstInterface() { | |
2558 if ( strcmp(_name,"CONST_INTER") != 0 ) return NULL; | |
2559 return (ConstInterface*)this; | |
2560 } | |
2561 CondInterface *Interface::is_CondInterface() { | |
2562 if ( strcmp(_name,"COND_INTER") != 0 ) return NULL; | |
2563 return (CondInterface*)this; | |
2564 } | |
2565 | |
2566 | |
2567 void Interface::dump() { | |
2568 output(stderr); | |
2569 } | |
2570 | |
2571 // Write info to output files | |
2572 void Interface::output(FILE *fp) { | |
2573 fprintf(fp,"Interface: %s\n", (_name ? _name : "") ); | |
2574 } | |
2575 | |
2576 //------------------------------RegInterface----------------------------------- | |
2577 RegInterface::RegInterface() : Interface("REG_INTER") { | |
2578 } | |
2579 RegInterface::~RegInterface() { | |
2580 } | |
2581 | |
2582 void RegInterface::dump() { | |
2583 output(stderr); | |
2584 } | |
2585 | |
2586 // Write info to output files | |
2587 void RegInterface::output(FILE *fp) { | |
2588 Interface::output(fp); | |
2589 } | |
2590 | |
2591 //------------------------------ConstInterface--------------------------------- | |
2592 ConstInterface::ConstInterface() : Interface("CONST_INTER") { | |
2593 } | |
2594 ConstInterface::~ConstInterface() { | |
2595 } | |
2596 | |
2597 void ConstInterface::dump() { | |
2598 output(stderr); | |
2599 } | |
2600 | |
2601 // Write info to output files | |
2602 void ConstInterface::output(FILE *fp) { | |
2603 Interface::output(fp); | |
2604 } | |
2605 | |
2606 //------------------------------MemInterface----------------------------------- | |
2607 MemInterface::MemInterface(char *base, char *index, char *scale, char *disp) | |
2608 : Interface("MEMORY_INTER"), _base(base), _index(index), _scale(scale), _disp(disp) { | |
2609 } | |
2610 MemInterface::~MemInterface() { | |
2611 // not owner of any character arrays | |
2612 } | |
2613 | |
2614 void MemInterface::dump() { | |
2615 output(stderr); | |
2616 } | |
2617 | |
2618 // Write info to output files | |
2619 void MemInterface::output(FILE *fp) { | |
2620 Interface::output(fp); | |
2621 if ( _base != NULL ) fprintf(fp," base == %s\n", _base); | |
2622 if ( _index != NULL ) fprintf(fp," index == %s\n", _index); | |
2623 if ( _scale != NULL ) fprintf(fp," scale == %s\n", _scale); | |
2624 if ( _disp != NULL ) fprintf(fp," disp == %s\n", _disp); | |
2625 // fprintf(fp,"\n"); | |
2626 } | |
2627 | |
2628 //------------------------------CondInterface---------------------------------- | |
415
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2629 CondInterface::CondInterface(const char* equal, const char* equal_format, |
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2630 const char* not_equal, const char* not_equal_format, |
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2631 const char* less, const char* less_format, |
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2632 const char* greater_equal, const char* greater_equal_format, |
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2633 const char* less_equal, const char* less_equal_format, |
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2634 const char* greater, const char* greater_format) |
0 | 2635 : Interface("COND_INTER"), |
415
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2636 _equal(equal), _equal_format(equal_format), |
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2637 _not_equal(not_equal), _not_equal_format(not_equal_format), |
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2638 _less(less), _less_format(less_format), |
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2639 _greater_equal(greater_equal), _greater_equal_format(greater_equal_format), |
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2640 _less_equal(less_equal), _less_equal_format(less_equal_format), |
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2641 _greater(greater), _greater_format(greater_format) { |
0 | 2642 } |
2643 CondInterface::~CondInterface() { | |
2644 // not owner of any character arrays | |
2645 } | |
2646 | |
2647 void CondInterface::dump() { | |
2648 output(stderr); | |
2649 } | |
2650 | |
2651 // Write info to output files | |
2652 void CondInterface::output(FILE *fp) { | |
2653 Interface::output(fp); | |
2654 if ( _equal != NULL ) fprintf(fp," equal == %s\n", _equal); | |
2655 if ( _not_equal != NULL ) fprintf(fp," not_equal == %s\n", _not_equal); | |
2656 if ( _less != NULL ) fprintf(fp," less == %s\n", _less); | |
2657 if ( _greater_equal != NULL ) fprintf(fp," greater_equal == %s\n", _greater_equal); | |
2658 if ( _less_equal != NULL ) fprintf(fp," less_equal == %s\n", _less_equal); | |
2659 if ( _greater != NULL ) fprintf(fp," greater == %s\n", _greater); | |
2660 // fprintf(fp,"\n"); | |
2661 } | |
2662 | |
2663 //------------------------------ConstructRule---------------------------------- | |
2664 ConstructRule::ConstructRule(char *cnstr) | |
2665 : _construct(cnstr) { | |
2666 } | |
2667 ConstructRule::~ConstructRule() { | |
2668 } | |
2669 | |
2670 void ConstructRule::dump() { | |
2671 output(stderr); | |
2672 } | |
2673 | |
2674 void ConstructRule::output(FILE *fp) { | |
2675 fprintf(fp,"\nConstruct Rule\n"); // Write to output files | |
2676 } | |
2677 | |
2678 | |
2679 //==============================Shared Forms=================================== | |
2680 //------------------------------AttributeForm---------------------------------- | |
2681 int AttributeForm::_insId = 0; // start counter at 0 | |
2682 int AttributeForm::_opId = 0; // start counter at 0 | |
2683 const char* AttributeForm::_ins_cost = "ins_cost"; // required name | |
2684 const char* AttributeForm::_ins_pc_relative = "ins_pc_relative"; | |
2685 const char* AttributeForm::_op_cost = "op_cost"; // required name | |
2686 | |
2687 AttributeForm::AttributeForm(char *attr, int type, char *attrdef) | |
2688 : Form(Form::ATTR), _attrname(attr), _atype(type), _attrdef(attrdef) { | |
2689 if (type==OP_ATTR) { | |
2690 id = ++_opId; | |
2691 } | |
2692 else if (type==INS_ATTR) { | |
2693 id = ++_insId; | |
2694 } | |
2695 else assert( false,""); | |
2696 } | |
2697 AttributeForm::~AttributeForm() { | |
2698 } | |
2699 | |
2700 // Dynamic type check | |
2701 AttributeForm *AttributeForm::is_attribute() const { | |
2702 return (AttributeForm*)this; | |
2703 } | |
2704 | |
2705 | |
2706 // inlined // int AttributeForm::type() { return id;} | |
2707 | |
2708 void AttributeForm::dump() { | |
2709 output(stderr); | |
2710 } | |
2711 | |
2712 void AttributeForm::output(FILE *fp) { | |
2713 if( _attrname && _attrdef ) { | |
2714 fprintf(fp,"\n// AttributeForm \nstatic const int %s = %s;\n", | |
2715 _attrname, _attrdef); | |
2716 } | |
2717 else { | |
2718 fprintf(fp,"\n// AttributeForm missing name %s or definition %s\n", | |
2719 (_attrname?_attrname:""), (_attrdef?_attrdef:"") ); | |
2720 } | |
2721 } | |
2722 | |
2723 //------------------------------Component-------------------------------------- | |
2724 Component::Component(const char *name, const char *type, int usedef) | |
2725 : _name(name), _type(type), _usedef(usedef) { | |
2726 _ftype = Form::COMP; | |
2727 } | |
2728 Component::~Component() { | |
2729 } | |
2730 | |
2731 // True if this component is equal to the parameter. | |
2732 bool Component::is(int use_def_kill_enum) const { | |
2733 return (_usedef == use_def_kill_enum ? true : false); | |
2734 } | |
2735 // True if this component is used/def'd/kill'd as the parameter suggests. | |
2736 bool Component::isa(int use_def_kill_enum) const { | |
2737 return (_usedef & use_def_kill_enum) == use_def_kill_enum; | |
2738 } | |
2739 | |
2740 // Extend this component with additional use/def/kill behavior | |
2741 int Component::promote_use_def_info(int new_use_def) { | |
2742 _usedef |= new_use_def; | |
2743 | |
2744 return _usedef; | |
2745 } | |
2746 | |
2747 // Check the base type of this component, if it has one | |
2748 const char *Component::base_type(FormDict &globals) { | |
2749 const Form *frm = globals[_type]; | |
2750 if (frm == NULL) return NULL; | |
2751 OperandForm *op = frm->is_operand(); | |
2752 if (op == NULL) return NULL; | |
2753 if (op->ideal_only()) return op->_ident; | |
2754 return (char *)op->ideal_type(globals); | |
2755 } | |
2756 | |
2757 void Component::dump() { | |
2758 output(stderr); | |
2759 } | |
2760 | |
2761 void Component::output(FILE *fp) { | |
2762 fprintf(fp,"Component:"); // Write to output files | |
2763 fprintf(fp, " name = %s", _name); | |
2764 fprintf(fp, ", type = %s", _type); | |
2765 const char * usedef = "Undefined Use/Def info"; | |
2766 switch (_usedef) { | |
2767 case USE: usedef = "USE"; break; | |
2768 case USE_DEF: usedef = "USE_DEF"; break; | |
2769 case USE_KILL: usedef = "USE_KILL"; break; | |
2770 case KILL: usedef = "KILL"; break; | |
2771 case TEMP: usedef = "TEMP"; break; | |
2772 case DEF: usedef = "DEF"; break; | |
2773 default: assert(false, "unknown effect"); | |
2774 } | |
2775 fprintf(fp, ", use/def = %s\n", usedef); | |
2776 } | |
2777 | |
2778 | |
2779 //------------------------------ComponentList--------------------------------- | |
2780 ComponentList::ComponentList() : NameList(), _matchcnt(0) { | |
2781 } | |
2782 ComponentList::~ComponentList() { | |
2783 // // This list may not own its elements if copied via assignment | |
2784 // Component *component; | |
2785 // for (reset(); (component = iter()) != NULL;) { | |
2786 // delete component; | |
2787 // } | |
2788 } | |
2789 | |
2790 void ComponentList::insert(Component *component, bool mflag) { | |
2791 NameList::addName((char *)component); | |
2792 if(mflag) _matchcnt++; | |
2793 } | |
2794 void ComponentList::insert(const char *name, const char *opType, int usedef, | |
2795 bool mflag) { | |
2796 Component * component = new Component(name, opType, usedef); | |
2797 insert(component, mflag); | |
2798 } | |
2799 Component *ComponentList::current() { return (Component*)NameList::current(); } | |
2800 Component *ComponentList::iter() { return (Component*)NameList::iter(); } | |
2801 Component *ComponentList::match_iter() { | |
2802 if(_iter < _matchcnt) return (Component*)NameList::iter(); | |
2803 return NULL; | |
2804 } | |
2805 Component *ComponentList::post_match_iter() { | |
2806 Component *comp = iter(); | |
2807 // At end of list? | |
2808 if ( comp == NULL ) { | |
2809 return comp; | |
2810 } | |
2811 // In post-match components? | |
2812 if (_iter > match_count()-1) { | |
2813 return comp; | |
2814 } | |
2815 | |
2816 return post_match_iter(); | |
2817 } | |
2818 | |
2819 void ComponentList::reset() { NameList::reset(); } | |
2820 int ComponentList::count() { return NameList::count(); } | |
2821 | |
2822 Component *ComponentList::operator[](int position) { | |
2823 // Shortcut complete iteration if there are not enough entries | |
2824 if (position >= count()) return NULL; | |
2825 | |
2826 int index = 0; | |
2827 Component *component = NULL; | |
2828 for (reset(); (component = iter()) != NULL;) { | |
2829 if (index == position) { | |
2830 return component; | |
2831 } | |
2832 ++index; | |
2833 } | |
2834 | |
2835 return NULL; | |
2836 } | |
2837 | |
2838 const Component *ComponentList::search(const char *name) { | |
2839 PreserveIter pi(this); | |
2840 reset(); | |
2841 for( Component *comp = NULL; ((comp = iter()) != NULL); ) { | |
2842 if( strcmp(comp->_name,name) == 0 ) return comp; | |
2843 } | |
2844 | |
2845 return NULL; | |
2846 } | |
2847 | |
2848 // Return number of USEs + number of DEFs | |
2849 // When there are no components, or the first component is a USE, | |
2850 // then we add '1' to hold a space for the 'result' operand. | |
2851 int ComponentList::num_operands() { | |
2852 PreserveIter pi(this); | |
2853 uint count = 1; // result operand | |
2854 uint position = 0; | |
2855 | |
2856 Component *component = NULL; | |
2857 for( reset(); (component = iter()) != NULL; ++position ) { | |
2858 if( component->isa(Component::USE) || | |
2859 ( position == 0 && (! component->isa(Component::DEF))) ) { | |
2860 ++count; | |
2861 } | |
2862 } | |
2863 | |
2864 return count; | |
2865 } | |
2866 | |
2867 // Return zero-based position in list; -1 if not in list. | |
2868 // if parameter 'usedef' is ::USE, it will match USE, USE_DEF, ... | |
2869 int ComponentList::operand_position(const char *name, int usedef) { | |
2870 PreserveIter pi(this); | |
2871 int position = 0; | |
2872 int num_opnds = num_operands(); | |
2873 Component *component; | |
2874 Component* preceding_non_use = NULL; | |
2875 Component* first_def = NULL; | |
2876 for (reset(); (component = iter()) != NULL; ++position) { | |
2877 // When the first component is not a DEF, | |
2878 // leave space for the result operand! | |
2879 if ( position==0 && (! component->isa(Component::DEF)) ) { | |
2880 ++position; | |
2881 ++num_opnds; | |
2882 } | |
2883 if (strcmp(name, component->_name)==0 && (component->isa(usedef))) { | |
2884 // When the first entry in the component list is a DEF and a USE | |
2885 // Treat them as being separate, a DEF first, then a USE | |
2886 if( position==0 | |
2887 && usedef==Component::USE && component->isa(Component::DEF) ) { | |
2888 assert(position+1 < num_opnds, "advertised index in bounds"); | |
2889 return position+1; | |
2890 } else { | |
2891 if( preceding_non_use && strcmp(component->_name, preceding_non_use->_name) ) { | |
2892 fprintf(stderr, "the name '%s' should not precede the name '%s'\n", preceding_non_use->_name, name); | |
2893 } | |
2894 if( position >= num_opnds ) { | |
2895 fprintf(stderr, "the name '%s' is too late in its name list\n", name); | |
2896 } | |
2897 assert(position < num_opnds, "advertised index in bounds"); | |
2898 return position; | |
2899 } | |
2900 } | |
2901 if( component->isa(Component::DEF) | |
2902 && component->isa(Component::USE) ) { | |
2903 ++position; | |
2904 if( position != 1 ) --position; // only use two slots for the 1st USE_DEF | |
2905 } | |
2906 if( component->isa(Component::DEF) && !first_def ) { | |
2907 first_def = component; | |
2908 } | |
2909 if( !component->isa(Component::USE) && component != first_def ) { | |
2910 preceding_non_use = component; | |
2911 } else if( preceding_non_use && !strcmp(component->_name, preceding_non_use->_name) ) { | |
2912 preceding_non_use = NULL; | |
2913 } | |
2914 } | |
2915 return Not_in_list; | |
2916 } | |
2917 | |
2918 // Find position for this name, regardless of use/def information | |
2919 int ComponentList::operand_position(const char *name) { | |
2920 PreserveIter pi(this); | |
2921 int position = 0; | |
2922 Component *component; | |
2923 for (reset(); (component = iter()) != NULL; ++position) { | |
2924 // When the first component is not a DEF, | |
2925 // leave space for the result operand! | |
2926 if ( position==0 && (! component->isa(Component::DEF)) ) { | |
2927 ++position; | |
2928 } | |
2929 if (strcmp(name, component->_name)==0) { | |
2930 return position; | |
2931 } | |
2932 if( component->isa(Component::DEF) | |
2933 && component->isa(Component::USE) ) { | |
2934 ++position; | |
2935 if( position != 1 ) --position; // only use two slots for the 1st USE_DEF | |
2936 } | |
2937 } | |
2938 return Not_in_list; | |
2939 } | |
2940 | |
2941 int ComponentList::operand_position_format(const char *name) { | |
2942 PreserveIter pi(this); | |
2943 int first_position = operand_position(name); | |
2944 int use_position = operand_position(name, Component::USE); | |
2945 | |
2946 return ((first_position < use_position) ? use_position : first_position); | |
2947 } | |
2948 | |
2949 int ComponentList::label_position() { | |
2950 PreserveIter pi(this); | |
2951 int position = 0; | |
2952 reset(); | |
2953 for( Component *comp; (comp = iter()) != NULL; ++position) { | |
2954 // When the first component is not a DEF, | |
2955 // leave space for the result operand! | |
2956 if ( position==0 && (! comp->isa(Component::DEF)) ) { | |
2957 ++position; | |
2958 } | |
2959 if (strcmp(comp->_type, "label")==0) { | |
2960 return position; | |
2961 } | |
2962 if( comp->isa(Component::DEF) | |
2963 && comp->isa(Component::USE) ) { | |
2964 ++position; | |
2965 if( position != 1 ) --position; // only use two slots for the 1st USE_DEF | |
2966 } | |
2967 } | |
2968 | |
2969 return -1; | |
2970 } | |
2971 | |
2972 int ComponentList::method_position() { | |
2973 PreserveIter pi(this); | |
2974 int position = 0; | |
2975 reset(); | |
2976 for( Component *comp; (comp = iter()) != NULL; ++position) { | |
2977 // When the first component is not a DEF, | |
2978 // leave space for the result operand! | |
2979 if ( position==0 && (! comp->isa(Component::DEF)) ) { | |
2980 ++position; | |
2981 } | |
2982 if (strcmp(comp->_type, "method")==0) { | |
2983 return position; | |
2984 } | |
2985 if( comp->isa(Component::DEF) | |
2986 && comp->isa(Component::USE) ) { | |
2987 ++position; | |
2988 if( position != 1 ) --position; // only use two slots for the 1st USE_DEF | |
2989 } | |
2990 } | |
2991 | |
2992 return -1; | |
2993 } | |
2994 | |
2995 void ComponentList::dump() { output(stderr); } | |
2996 | |
2997 void ComponentList::output(FILE *fp) { | |
2998 PreserveIter pi(this); | |
2999 fprintf(fp, "\n"); | |
3000 Component *component; | |
3001 for (reset(); (component = iter()) != NULL;) { | |
3002 component->output(fp); | |
3003 } | |
3004 fprintf(fp, "\n"); | |
3005 } | |
3006 | |
3007 //------------------------------MatchNode-------------------------------------- | |
3008 MatchNode::MatchNode(ArchDesc &ad, const char *result, const char *mexpr, | |
3009 const char *opType, MatchNode *lChild, MatchNode *rChild) | |
3010 : _AD(ad), _result(result), _name(mexpr), _opType(opType), | |
3011 _lChild(lChild), _rChild(rChild), _internalop(0), _numleaves(0), | |
3012 _commutative_id(0) { | |
3013 _numleaves = (lChild ? lChild->_numleaves : 0) | |
3014 + (rChild ? rChild->_numleaves : 0); | |
3015 } | |
3016 | |
3017 MatchNode::MatchNode(ArchDesc &ad, MatchNode& mnode) | |
3018 : _AD(ad), _result(mnode._result), _name(mnode._name), | |
3019 _opType(mnode._opType), _lChild(mnode._lChild), _rChild(mnode._rChild), | |
3020 _internalop(0), _numleaves(mnode._numleaves), | |
3021 _commutative_id(mnode._commutative_id) { | |
3022 } | |
3023 | |
3024 MatchNode::MatchNode(ArchDesc &ad, MatchNode& mnode, int clone) | |
3025 : _AD(ad), _result(mnode._result), _name(mnode._name), | |
3026 _opType(mnode._opType), | |
3027 _internalop(0), _numleaves(mnode._numleaves), | |
3028 _commutative_id(mnode._commutative_id) { | |
3029 if (mnode._lChild) { | |
3030 _lChild = new MatchNode(ad, *mnode._lChild, clone); | |
3031 } else { | |
3032 _lChild = NULL; | |
3033 } | |
3034 if (mnode._rChild) { | |
3035 _rChild = new MatchNode(ad, *mnode._rChild, clone); | |
3036 } else { | |
3037 _rChild = NULL; | |
3038 } | |
3039 } | |
3040 | |
3041 MatchNode::~MatchNode() { | |
3042 // // This node may not own its children if copied via assignment | |
3043 // if( _lChild ) delete _lChild; | |
3044 // if( _rChild ) delete _rChild; | |
3045 } | |
3046 | |
3047 bool MatchNode::find_type(const char *type, int &position) const { | |
3048 if ( (_lChild != NULL) && (_lChild->find_type(type, position)) ) return true; | |
3049 if ( (_rChild != NULL) && (_rChild->find_type(type, position)) ) return true; | |
3050 | |
3051 if (strcmp(type,_opType)==0) { | |
3052 return true; | |
3053 } else { | |
3054 ++position; | |
3055 } | |
3056 return false; | |
3057 } | |
3058 | |
3059 // Recursive call collecting info on top-level operands, not transitive. | |
3060 // Implementation does not modify state of internal structures. | |
603
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3061 void MatchNode::append_components(FormDict& locals, ComponentList& components, |
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3062 bool def_flag) const { |
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3063 int usedef = def_flag ? Component::DEF : Component::USE; |
0 | 3064 FormDict &globals = _AD.globalNames(); |
3065 | |
3066 assert (_name != NULL, "MatchNode::build_components encountered empty node\n"); | |
3067 // Base case | |
3068 if (_lChild==NULL && _rChild==NULL) { | |
3069 // If _opType is not an operation, do not build a component for it ##### | |
3070 const Form *f = globals[_opType]; | |
3071 if( f != NULL ) { | |
3072 // Add non-ideals that are operands, operand-classes, | |
3073 if( ! f->ideal_only() | |
3074 && (f->is_opclass() || f->is_operand()) ) { | |
3075 components.insert(_name, _opType, usedef, true); | |
3076 } | |
3077 } | |
3078 return; | |
3079 } | |
3080 // Promote results of "Set" to DEF | |
603
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3081 bool tmpdef_flag = (!strcmp(_opType, "Set")) ? true : false; |
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3082 if (_lChild) _lChild->append_components(locals, components, tmpdef_flag); |
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3083 tmpdef_flag = false; // only applies to component immediately following 'Set' |
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3084 if (_rChild) _rChild->append_components(locals, components, tmpdef_flag); |
0 | 3085 } |
3086 | |
3087 // Find the n'th base-operand in the match node, | |
3088 // recursively investigates match rules of user-defined operands. | |
3089 // | |
3090 // Implementation does not modify state of internal structures since they | |
3091 // can be shared. | |
3092 bool MatchNode::base_operand(uint &position, FormDict &globals, | |
3093 const char * &result, const char * &name, | |
3094 const char * &opType) const { | |
3095 assert (_name != NULL, "MatchNode::base_operand encountered empty node\n"); | |
3096 // Base case | |
3097 if (_lChild==NULL && _rChild==NULL) { | |
3098 // Check for special case: "Universe", "label" | |
3099 if (strcmp(_opType,"Universe") == 0 || strcmp(_opType,"label")==0 ) { | |
3100 if (position == 0) { | |
3101 result = _result; | |
3102 name = _name; | |
3103 opType = _opType; | |
3104 return 1; | |
3105 } else { | |
3106 -- position; | |
3107 return 0; | |
3108 } | |
3109 } | |
3110 | |
3111 const Form *form = globals[_opType]; | |
3112 MatchNode *matchNode = NULL; | |
3113 // Check for user-defined type | |
3114 if (form) { | |
3115 // User operand or instruction? | |
3116 OperandForm *opForm = form->is_operand(); | |
3117 InstructForm *inForm = form->is_instruction(); | |
3118 if ( opForm ) { | |
3119 matchNode = (MatchNode*)opForm->_matrule; | |
3120 } else if ( inForm ) { | |
3121 matchNode = (MatchNode*)inForm->_matrule; | |
3122 } | |
3123 } | |
3124 // if this is user-defined, recurse on match rule | |
3125 // User-defined operand and instruction forms have a match-rule. | |
3126 if (matchNode) { | |
3127 return (matchNode->base_operand(position,globals,result,name,opType)); | |
3128 } else { | |
3129 // Either not a form, or a system-defined form (no match rule). | |
3130 if (position==0) { | |
3131 result = _result; | |
3132 name = _name; | |
3133 opType = _opType; | |
3134 return 1; | |
3135 } else { | |
3136 --position; | |
3137 return 0; | |
3138 } | |
3139 } | |
3140 | |
3141 } else { | |
3142 // Examine the left child and right child as well | |
3143 if (_lChild) { | |
3144 if (_lChild->base_operand(position, globals, result, name, opType)) | |
3145 return 1; | |
3146 } | |
3147 | |
3148 if (_rChild) { | |
3149 if (_rChild->base_operand(position, globals, result, name, opType)) | |
3150 return 1; | |
3151 } | |
3152 } | |
3153 | |
3154 return 0; | |
3155 } | |
3156 | |
3157 // Recursive call on all operands' match rules in my match rule. | |
3158 uint MatchNode::num_consts(FormDict &globals) const { | |
3159 uint index = 0; | |
3160 uint num_consts = 0; | |
3161 const char *result; | |
3162 const char *name; | |
3163 const char *opType; | |
3164 | |
3165 for (uint position = index; | |
3166 base_operand(position,globals,result,name,opType); position = index) { | |
3167 ++index; | |
3168 if( ideal_to_const_type(opType) ) num_consts++; | |
3169 } | |
3170 | |
3171 return num_consts; | |
3172 } | |
3173 | |
3174 // Recursive call on all operands' match rules in my match rule. | |
3175 // Constants in match rule subtree with specified type | |
3176 uint MatchNode::num_consts(FormDict &globals, Form::DataType type) const { | |
3177 uint index = 0; | |
3178 uint num_consts = 0; | |
3179 const char *result; | |
3180 const char *name; | |
3181 const char *opType; | |
3182 | |
3183 for (uint position = index; | |
3184 base_operand(position,globals,result,name,opType); position = index) { | |
3185 ++index; | |
3186 if( ideal_to_const_type(opType) == type ) num_consts++; | |
3187 } | |
3188 | |
3189 return num_consts; | |
3190 } | |
3191 | |
3192 // Recursive call on all operands' match rules in my match rule. | |
3193 uint MatchNode::num_const_ptrs(FormDict &globals) const { | |
3194 return num_consts( globals, Form::idealP ); | |
3195 } | |
3196 | |
3197 bool MatchNode::sets_result() const { | |
3198 return ( (strcmp(_name,"Set") == 0) ? true : false ); | |
3199 } | |
3200 | |
3201 const char *MatchNode::reduce_right(FormDict &globals) const { | |
3202 // If there is no right reduction, return NULL. | |
3203 const char *rightStr = NULL; | |
3204 | |
3205 // If we are a "Set", start from the right child. | |
3206 const MatchNode *const mnode = sets_result() ? | |
3207 (const MatchNode *const)this->_rChild : | |
3208 (const MatchNode *const)this; | |
3209 | |
3210 // If our right child exists, it is the right reduction | |
3211 if ( mnode->_rChild ) { | |
3212 rightStr = mnode->_rChild->_internalop ? mnode->_rChild->_internalop | |
3213 : mnode->_rChild->_opType; | |
3214 } | |
3215 // Else, May be simple chain rule: (Set dst operand_form), rightStr=NULL; | |
3216 return rightStr; | |
3217 } | |
3218 | |
3219 const char *MatchNode::reduce_left(FormDict &globals) const { | |
3220 // If there is no left reduction, return NULL. | |
3221 const char *leftStr = NULL; | |
3222 | |
3223 // If we are a "Set", start from the right child. | |
3224 const MatchNode *const mnode = sets_result() ? | |
3225 (const MatchNode *const)this->_rChild : | |
3226 (const MatchNode *const)this; | |
3227 | |
3228 // If our left child exists, it is the left reduction | |
3229 if ( mnode->_lChild ) { | |
3230 leftStr = mnode->_lChild->_internalop ? mnode->_lChild->_internalop | |
3231 : mnode->_lChild->_opType; | |
3232 } else { | |
3233 // May be simple chain rule: (Set dst operand_form_source) | |
3234 if ( sets_result() ) { | |
3235 OperandForm *oper = globals[mnode->_opType]->is_operand(); | |
3236 if( oper ) { | |
3237 leftStr = mnode->_opType; | |
3238 } | |
3239 } | |
3240 } | |
3241 return leftStr; | |
3242 } | |
3243 | |
3244 //------------------------------count_instr_names------------------------------ | |
3245 // Count occurrences of operands names in the leaves of the instruction | |
3246 // match rule. | |
3247 void MatchNode::count_instr_names( Dict &names ) { | |
3248 if( !this ) return; | |
3249 if( _lChild ) _lChild->count_instr_names(names); | |
3250 if( _rChild ) _rChild->count_instr_names(names); | |
3251 if( !_lChild && !_rChild ) { | |
3252 uintptr_t cnt = (uintptr_t)names[_name]; | |
3253 cnt++; // One more name found | |
3254 names.Insert(_name,(void*)cnt); | |
3255 } | |
3256 } | |
3257 | |
3258 //------------------------------build_instr_pred------------------------------- | |
3259 // Build a path to 'name' in buf. Actually only build if cnt is zero, so we | |
3260 // can skip some leading instances of 'name'. | |
3261 int MatchNode::build_instr_pred( char *buf, const char *name, int cnt ) { | |
3262 if( _lChild ) { | |
3263 if( !cnt ) strcpy( buf, "_kids[0]->" ); | |
3264 cnt = _lChild->build_instr_pred( buf+strlen(buf), name, cnt ); | |
3265 if( cnt < 0 ) return cnt; // Found it, all done | |
3266 } | |
3267 if( _rChild ) { | |
3268 if( !cnt ) strcpy( buf, "_kids[1]->" ); | |
3269 cnt = _rChild->build_instr_pred( buf+strlen(buf), name, cnt ); | |
3270 if( cnt < 0 ) return cnt; // Found it, all done | |
3271 } | |
3272 if( !_lChild && !_rChild ) { // Found a leaf | |
3273 // Wrong name? Give up... | |
3274 if( strcmp(name,_name) ) return cnt; | |
3275 if( !cnt ) strcpy(buf,"_leaf"); | |
3276 return cnt-1; | |
3277 } | |
3278 return cnt; | |
3279 } | |
3280 | |
3281 | |
3282 //------------------------------build_internalop------------------------------- | |
3283 // Build string representation of subtree | |
3284 void MatchNode::build_internalop( ) { | |
3285 char *iop, *subtree; | |
3286 const char *lstr, *rstr; | |
3287 // Build string representation of subtree | |
3288 // Operation lchildType rchildType | |
3289 int len = (int)strlen(_opType) + 4; | |
3290 lstr = (_lChild) ? ((_lChild->_internalop) ? | |
3291 _lChild->_internalop : _lChild->_opType) : ""; | |
3292 rstr = (_rChild) ? ((_rChild->_internalop) ? | |
3293 _rChild->_internalop : _rChild->_opType) : ""; | |
3294 len += (int)strlen(lstr) + (int)strlen(rstr); | |
3295 subtree = (char *)malloc(len); | |
3296 sprintf(subtree,"_%s_%s_%s", _opType, lstr, rstr); | |
3297 // Hash the subtree string in _internalOps; if a name exists, use it | |
3298 iop = (char *)_AD._internalOps[subtree]; | |
3299 // Else create a unique name, and add it to the hash table | |
3300 if (iop == NULL) { | |
3301 iop = subtree; | |
3302 _AD._internalOps.Insert(subtree, iop); | |
3303 _AD._internalOpNames.addName(iop); | |
3304 _AD._internalMatch.Insert(iop, this); | |
3305 } | |
3306 // Add the internal operand name to the MatchNode | |
3307 _internalop = iop; | |
3308 _result = iop; | |
3309 } | |
3310 | |
3311 | |
3312 void MatchNode::dump() { | |
3313 output(stderr); | |
3314 } | |
3315 | |
3316 void MatchNode::output(FILE *fp) { | |
3317 if (_lChild==0 && _rChild==0) { | |
3318 fprintf(fp," %s",_name); // operand | |
3319 } | |
3320 else { | |
3321 fprintf(fp," (%s ",_name); // " (opcodeName " | |
3322 if(_lChild) _lChild->output(fp); // left operand | |
3323 if(_rChild) _rChild->output(fp); // right operand | |
3324 fprintf(fp,")"); // ")" | |
3325 } | |
3326 } | |
3327 | |
3328 int MatchNode::needs_ideal_memory_edge(FormDict &globals) const { | |
3329 static const char *needs_ideal_memory_list[] = { | |
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3330 "StoreI","StoreL","StoreP","StoreN","StoreD","StoreF" , |
0 | 3331 "StoreB","StoreC","Store" ,"StoreFP", |
624 | 3332 "LoadI", "LoadUI2L", "LoadL", "LoadP" ,"LoadN", "LoadD" ,"LoadF" , |
3333 "LoadB" , "LoadUB", "LoadUS" ,"LoadS" ,"Load" , | |
0 | 3334 "Store4I","Store2I","Store2L","Store2D","Store4F","Store2F","Store16B", |
3335 "Store8B","Store4B","Store8C","Store4C","Store2C", | |
3336 "Load4I" ,"Load2I" ,"Load2L" ,"Load2D" ,"Load4F" ,"Load2F" ,"Load16B" , | |
3337 "Load8B" ,"Load4B" ,"Load8C" ,"Load4C" ,"Load2C" ,"Load8S", "Load4S","Load2S", | |
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3338 "LoadRange", "LoadKlass", "LoadNKlass", "LoadL_unaligned", "LoadD_unaligned", |
0 | 3339 "LoadPLocked", "LoadLLocked", |
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3340 "StorePConditional", "StoreIConditional", "StoreLConditional", |
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3341 "CompareAndSwapI", "CompareAndSwapL", "CompareAndSwapP", "CompareAndSwapN", |
0 | 3342 "StoreCM", |
3343 "ClearArray" | |
3344 }; | |
3345 int cnt = sizeof(needs_ideal_memory_list)/sizeof(char*); | |
3346 if( strcmp(_opType,"PrefetchRead")==0 || strcmp(_opType,"PrefetchWrite")==0 ) | |
3347 return 1; | |
3348 if( _lChild ) { | |
3349 const char *opType = _lChild->_opType; | |
3350 for( int i=0; i<cnt; i++ ) | |
3351 if( strcmp(opType,needs_ideal_memory_list[i]) == 0 ) | |
3352 return 1; | |
3353 if( _lChild->needs_ideal_memory_edge(globals) ) | |
3354 return 1; | |
3355 } | |
3356 if( _rChild ) { | |
3357 const char *opType = _rChild->_opType; | |
3358 for( int i=0; i<cnt; i++ ) | |
3359 if( strcmp(opType,needs_ideal_memory_list[i]) == 0 ) | |
3360 return 1; | |
3361 if( _rChild->needs_ideal_memory_edge(globals) ) | |
3362 return 1; | |
3363 } | |
3364 | |
3365 return 0; | |
3366 } | |
3367 | |
3368 // TRUE if defines a derived oop, and so needs a base oop edge present | |
3369 // post-matching. | |
3370 int MatchNode::needs_base_oop_edge() const { | |
3371 if( !strcmp(_opType,"AddP") ) return 1; | |
3372 if( strcmp(_opType,"Set") ) return 0; | |
3373 return !strcmp(_rChild->_opType,"AddP"); | |
3374 } | |
3375 | |
3376 int InstructForm::needs_base_oop_edge(FormDict &globals) const { | |
3377 if( is_simple_chain_rule(globals) ) { | |
3378 const char *src = _matrule->_rChild->_opType; | |
3379 OperandForm *src_op = globals[src]->is_operand(); | |
3380 assert( src_op, "Not operand class of chain rule" ); | |
3381 return src_op->_matrule ? src_op->_matrule->needs_base_oop_edge() : 0; | |
3382 } // Else check instruction | |
3383 | |
3384 return _matrule ? _matrule->needs_base_oop_edge() : 0; | |
3385 } | |
3386 | |
3387 | |
3388 //-------------------------cisc spilling methods------------------------------- | |
3389 // helper routines and methods for detecting cisc-spilling instructions | |
3390 //-------------------------cisc_spill_merge------------------------------------ | |
3391 int MatchNode::cisc_spill_merge(int left_spillable, int right_spillable) { | |
3392 int cisc_spillable = Maybe_cisc_spillable; | |
3393 | |
3394 // Combine results of left and right checks | |
3395 if( (left_spillable == Maybe_cisc_spillable) && (right_spillable == Maybe_cisc_spillable) ) { | |
3396 // neither side is spillable, nor prevents cisc spilling | |
3397 cisc_spillable = Maybe_cisc_spillable; | |
3398 } | |
3399 else if( (left_spillable == Maybe_cisc_spillable) && (right_spillable > Maybe_cisc_spillable) ) { | |
3400 // right side is spillable | |
3401 cisc_spillable = right_spillable; | |
3402 } | |
3403 else if( (right_spillable == Maybe_cisc_spillable) && (left_spillable > Maybe_cisc_spillable) ) { | |
3404 // left side is spillable | |
3405 cisc_spillable = left_spillable; | |
3406 } | |
3407 else if( (left_spillable == Not_cisc_spillable) || (right_spillable == Not_cisc_spillable) ) { | |
3408 // left or right prevents cisc spilling this instruction | |
3409 cisc_spillable = Not_cisc_spillable; | |
3410 } | |
3411 else { | |
3412 // Only allow one to spill | |
3413 cisc_spillable = Not_cisc_spillable; | |
3414 } | |
3415 | |
3416 return cisc_spillable; | |
3417 } | |
3418 | |
3419 //-------------------------root_ops_match-------------------------------------- | |
3420 bool static root_ops_match(FormDict &globals, const char *op1, const char *op2) { | |
3421 // Base Case: check that the current operands/operations match | |
3422 assert( op1, "Must have op's name"); | |
3423 assert( op2, "Must have op's name"); | |
3424 const Form *form1 = globals[op1]; | |
3425 const Form *form2 = globals[op2]; | |
3426 | |
3427 return (form1 == form2); | |
3428 } | |
3429 | |
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3430 //-------------------------cisc_spill_match_node------------------------------- |
0 | 3431 // Recursively check two MatchRules for legal conversion via cisc-spilling |
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3432 int MatchNode::cisc_spill_match(FormDict& globals, RegisterForm* registers, MatchNode* mRule2, const char* &operand, const char* ®_type) { |
0 | 3433 int cisc_spillable = Maybe_cisc_spillable; |
3434 int left_spillable = Maybe_cisc_spillable; | |
3435 int right_spillable = Maybe_cisc_spillable; | |
3436 | |
3437 // Check that each has same number of operands at this level | |
3438 if( (_lChild && !(mRule2->_lChild)) || (_rChild && !(mRule2->_rChild)) ) | |
3439 return Not_cisc_spillable; | |
3440 | |
3441 // Base Case: check that the current operands/operations match | |
3442 // or are CISC spillable | |
3443 assert( _opType, "Must have _opType"); | |
3444 assert( mRule2->_opType, "Must have _opType"); | |
3445 const Form *form = globals[_opType]; | |
3446 const Form *form2 = globals[mRule2->_opType]; | |
3447 if( form == form2 ) { | |
3448 cisc_spillable = Maybe_cisc_spillable; | |
3449 } else { | |
3450 const InstructForm *form2_inst = form2 ? form2->is_instruction() : NULL; | |
3451 const char *name_left = mRule2->_lChild ? mRule2->_lChild->_opType : NULL; | |
3452 const char *name_right = mRule2->_rChild ? mRule2->_rChild->_opType : NULL; | |
624 | 3453 DataType data_type = Form::none; |
3454 if (form->is_operand()) { | |
3455 // Make sure the loadX matches the type of the reg | |
3456 data_type = form->ideal_to_Reg_type(form->is_operand()->ideal_type(globals)); | |
3457 } | |
0 | 3458 // Detect reg vs (loadX memory) |
3459 if( form->is_cisc_reg(globals) | |
3460 && form2_inst | |
624 | 3461 && data_type != Form::none |
3462 && (is_load_from_memory(mRule2->_opType) == data_type) // reg vs. (load memory) | |
0 | 3463 && (name_left != NULL) // NOT (load) |
3464 && (name_right == NULL) ) { // NOT (load memory foo) | |
3465 const Form *form2_left = name_left ? globals[name_left] : NULL; | |
3466 if( form2_left && form2_left->is_cisc_mem(globals) ) { | |
3467 cisc_spillable = Is_cisc_spillable; | |
3468 operand = _name; | |
3469 reg_type = _result; | |
3470 return Is_cisc_spillable; | |
3471 } else { | |
3472 cisc_spillable = Not_cisc_spillable; | |
3473 } | |
3474 } | |
3475 // Detect reg vs memory | |
3476 else if( form->is_cisc_reg(globals) && form2->is_cisc_mem(globals) ) { | |
3477 cisc_spillable = Is_cisc_spillable; | |
3478 operand = _name; | |
3479 reg_type = _result; | |
3480 return Is_cisc_spillable; | |
3481 } else { | |
3482 cisc_spillable = Not_cisc_spillable; | |
3483 } | |
3484 } | |
3485 | |
3486 // If cisc is still possible, check rest of tree | |
3487 if( cisc_spillable == Maybe_cisc_spillable ) { | |
3488 // Check that each has same number of operands at this level | |
3489 if( (_lChild && !(mRule2->_lChild)) || (_rChild && !(mRule2->_rChild)) ) return Not_cisc_spillable; | |
3490 | |
3491 // Check left operands | |
3492 if( (_lChild == NULL) && (mRule2->_lChild == NULL) ) { | |
3493 left_spillable = Maybe_cisc_spillable; | |
3494 } else { | |
3495 left_spillable = _lChild->cisc_spill_match(globals, registers, mRule2->_lChild, operand, reg_type); | |
3496 } | |
3497 | |
3498 // Check right operands | |
3499 if( (_rChild == NULL) && (mRule2->_rChild == NULL) ) { | |
3500 right_spillable = Maybe_cisc_spillable; | |
3501 } else { | |
3502 right_spillable = _rChild->cisc_spill_match(globals, registers, mRule2->_rChild, operand, reg_type); | |
3503 } | |
3504 | |
3505 // Combine results of left and right checks | |
3506 cisc_spillable = cisc_spill_merge(left_spillable, right_spillable); | |
3507 } | |
3508 | |
3509 return cisc_spillable; | |
3510 } | |
3511 | |
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3512 //---------------------------cisc_spill_match_rule------------------------------ |
0 | 3513 // Recursively check two MatchRules for legal conversion via cisc-spilling |
3514 // This method handles the root of Match tree, | |
3515 // general recursive checks done in MatchNode | |
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3516 int MatchRule::matchrule_cisc_spill_match(FormDict& globals, RegisterForm* registers, |
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3517 MatchRule* mRule2, const char* &operand, |
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3518 const char* ®_type) { |
0 | 3519 int cisc_spillable = Maybe_cisc_spillable; |
3520 int left_spillable = Maybe_cisc_spillable; | |
3521 int right_spillable = Maybe_cisc_spillable; | |
3522 | |
3523 // Check that each sets a result | |
3524 if( !(sets_result() && mRule2->sets_result()) ) return Not_cisc_spillable; | |
3525 // Check that each has same number of operands at this level | |
3526 if( (_lChild && !(mRule2->_lChild)) || (_rChild && !(mRule2->_rChild)) ) return Not_cisc_spillable; | |
3527 | |
3528 // Check left operands: at root, must be target of 'Set' | |
3529 if( (_lChild == NULL) || (mRule2->_lChild == NULL) ) { | |
3530 left_spillable = Not_cisc_spillable; | |
3531 } else { | |
3532 // Do not support cisc-spilling instruction's target location | |
3533 if( root_ops_match(globals, _lChild->_opType, mRule2->_lChild->_opType) ) { | |
3534 left_spillable = Maybe_cisc_spillable; | |
3535 } else { | |
3536 left_spillable = Not_cisc_spillable; | |
3537 } | |
3538 } | |
3539 | |
3540 // Check right operands: recursive walk to identify reg->mem operand | |
3541 if( (_rChild == NULL) && (mRule2->_rChild == NULL) ) { | |
3542 right_spillable = Maybe_cisc_spillable; | |
3543 } else { | |
3544 right_spillable = _rChild->cisc_spill_match(globals, registers, mRule2->_rChild, operand, reg_type); | |
3545 } | |
3546 | |
3547 // Combine results of left and right checks | |
3548 cisc_spillable = cisc_spill_merge(left_spillable, right_spillable); | |
3549 | |
3550 return cisc_spillable; | |
3551 } | |
3552 | |
3553 //----------------------------- equivalent ------------------------------------ | |
3554 // Recursively check to see if two match rules are equivalent. | |
3555 // This rule handles the root. | |
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3556 bool MatchRule::equivalent(FormDict &globals, MatchNode *mRule2) { |
0 | 3557 // Check that each sets a result |
3558 if (sets_result() != mRule2->sets_result()) { | |
3559 return false; | |
3560 } | |
3561 | |
3562 // Check that the current operands/operations match | |
3563 assert( _opType, "Must have _opType"); | |
3564 assert( mRule2->_opType, "Must have _opType"); | |
3565 const Form *form = globals[_opType]; | |
3566 const Form *form2 = globals[mRule2->_opType]; | |
3567 if( form != form2 ) { | |
3568 return false; | |
3569 } | |
3570 | |
3571 if (_lChild ) { | |
3572 if( !_lChild->equivalent(globals, mRule2->_lChild) ) | |
3573 return false; | |
3574 } else if (mRule2->_lChild) { | |
3575 return false; // I have NULL left child, mRule2 has non-NULL left child. | |
3576 } | |
3577 | |
3578 if (_rChild ) { | |
3579 if( !_rChild->equivalent(globals, mRule2->_rChild) ) | |
3580 return false; | |
3581 } else if (mRule2->_rChild) { | |
3582 return false; // I have NULL right child, mRule2 has non-NULL right child. | |
3583 } | |
3584 | |
3585 // We've made it through the gauntlet. | |
3586 return true; | |
3587 } | |
3588 | |
3589 //----------------------------- equivalent ------------------------------------ | |
3590 // Recursively check to see if two match rules are equivalent. | |
3591 // This rule handles the operands. | |
3592 bool MatchNode::equivalent(FormDict &globals, MatchNode *mNode2) { | |
3593 if( !mNode2 ) | |
3594 return false; | |
3595 | |
3596 // Check that the current operands/operations match | |
3597 assert( _opType, "Must have _opType"); | |
3598 assert( mNode2->_opType, "Must have _opType"); | |
3599 const Form *form = globals[_opType]; | |
3600 const Form *form2 = globals[mNode2->_opType]; | |
3601 return (form == form2); | |
3602 } | |
3603 | |
3604 //-------------------------- has_commutative_op ------------------------------- | |
3605 // Recursively check for commutative operations with subtree operands | |
3606 // which could be swapped. | |
3607 void MatchNode::count_commutative_op(int& count) { | |
3608 static const char *commut_op_list[] = { | |
3609 "AddI","AddL","AddF","AddD", | |
3610 "AndI","AndL", | |
3611 "MaxI","MinI", | |
3612 "MulI","MulL","MulF","MulD", | |
3613 "OrI" ,"OrL" , | |
3614 "XorI","XorL" | |
3615 }; | |
3616 int cnt = sizeof(commut_op_list)/sizeof(char*); | |
3617 | |
3618 if( _lChild && _rChild && (_lChild->_lChild || _rChild->_lChild) ) { | |
3619 // Don't swap if right operand is an immediate constant. | |
3620 bool is_const = false; | |
3621 if( _rChild->_lChild == NULL && _rChild->_rChild == NULL ) { | |
3622 FormDict &globals = _AD.globalNames(); | |
3623 const Form *form = globals[_rChild->_opType]; | |
3624 if ( form ) { | |
3625 OperandForm *oper = form->is_operand(); | |
3626 if( oper && oper->interface_type(globals) == Form::constant_interface ) | |
3627 is_const = true; | |
3628 } | |
3629 } | |
3630 if( !is_const ) { | |
3631 for( int i=0; i<cnt; i++ ) { | |
3632 if( strcmp(_opType, commut_op_list[i]) == 0 ) { | |
3633 count++; | |
3634 _commutative_id = count; // id should be > 0 | |
3635 break; | |
3636 } | |
3637 } | |
3638 } | |
3639 } | |
3640 if( _lChild ) | |
3641 _lChild->count_commutative_op(count); | |
3642 if( _rChild ) | |
3643 _rChild->count_commutative_op(count); | |
3644 } | |
3645 | |
3646 //-------------------------- swap_commutative_op ------------------------------ | |
3647 // Recursively swap specified commutative operation with subtree operands. | |
3648 void MatchNode::swap_commutative_op(bool atroot, int id) { | |
3649 if( _commutative_id == id ) { // id should be > 0 | |
3650 assert(_lChild && _rChild && (_lChild->_lChild || _rChild->_lChild ), | |
3651 "not swappable operation"); | |
3652 MatchNode* tmp = _lChild; | |
3653 _lChild = _rChild; | |
3654 _rChild = tmp; | |
3655 // Don't exit here since we need to build internalop. | |
3656 } | |
3657 | |
3658 bool is_set = ( strcmp(_opType, "Set") == 0 ); | |
3659 if( _lChild ) | |
3660 _lChild->swap_commutative_op(is_set, id); | |
3661 if( _rChild ) | |
3662 _rChild->swap_commutative_op(is_set, id); | |
3663 | |
3664 // If not the root, reduce this subtree to an internal operand | |
3665 if( !atroot && (_lChild || _rChild) ) { | |
3666 build_internalop(); | |
3667 } | |
3668 } | |
3669 | |
3670 //-------------------------- swap_commutative_op ------------------------------ | |
3671 // Recursively swap specified commutative operation with subtree operands. | |
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diff
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|
3672 void MatchRule::matchrule_swap_commutative_op(const char* instr_ident, int count, int& match_rules_cnt) { |
0 | 3673 assert(match_rules_cnt < 100," too many match rule clones"); |
3674 // Clone | |
3675 MatchRule* clone = new MatchRule(_AD, this); | |
3676 // Swap operands of commutative operation | |
3677 ((MatchNode*)clone)->swap_commutative_op(true, count); | |
3678 char* buf = (char*) malloc(strlen(instr_ident) + 4); | |
3679 sprintf(buf, "%s_%d", instr_ident, match_rules_cnt++); | |
3680 clone->_result = buf; | |
3681 | |
3682 clone->_next = this->_next; | |
3683 this-> _next = clone; | |
3684 if( (--count) > 0 ) { | |
603
dbbe28fc66b5
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parents:
602
diff
changeset
|
3685 this-> matchrule_swap_commutative_op(instr_ident, count, match_rules_cnt); |
dbbe28fc66b5
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diff
changeset
|
3686 clone->matchrule_swap_commutative_op(instr_ident, count, match_rules_cnt); |
0 | 3687 } |
3688 } | |
3689 | |
3690 //------------------------------MatchRule-------------------------------------- | |
3691 MatchRule::MatchRule(ArchDesc &ad) | |
3692 : MatchNode(ad), _depth(0), _construct(NULL), _numchilds(0) { | |
3693 _next = NULL; | |
3694 } | |
3695 | |
3696 MatchRule::MatchRule(ArchDesc &ad, MatchRule* mRule) | |
3697 : MatchNode(ad, *mRule, 0), _depth(mRule->_depth), | |
3698 _construct(mRule->_construct), _numchilds(mRule->_numchilds) { | |
3699 _next = NULL; | |
3700 } | |
3701 | |
3702 MatchRule::MatchRule(ArchDesc &ad, MatchNode* mroot, int depth, char *cnstr, | |
3703 int numleaves) | |
3704 : MatchNode(ad,*mroot), _depth(depth), _construct(cnstr), | |
3705 _numchilds(0) { | |
3706 _next = NULL; | |
3707 mroot->_lChild = NULL; | |
3708 mroot->_rChild = NULL; | |
3709 delete mroot; | |
3710 _numleaves = numleaves; | |
3711 _numchilds = (_lChild ? 1 : 0) + (_rChild ? 1 : 0); | |
3712 } | |
3713 MatchRule::~MatchRule() { | |
3714 } | |
3715 | |
3716 // Recursive call collecting info on top-level operands, not transitive. | |
3717 // Implementation does not modify state of internal structures. | |
603
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3718 void MatchRule::append_components(FormDict& locals, ComponentList& components, bool def_flag) const { |
0 | 3719 assert (_name != NULL, "MatchNode::build_components encountered empty node\n"); |
3720 | |
3721 MatchNode::append_components(locals, components, | |
3722 false /* not necessarily a def */); | |
3723 } | |
3724 | |
3725 // Recursive call on all operands' match rules in my match rule. | |
3726 // Implementation does not modify state of internal structures since they | |
3727 // can be shared. | |
3728 // The MatchNode that is called first treats its | |
3729 bool MatchRule::base_operand(uint &position0, FormDict &globals, | |
3730 const char *&result, const char * &name, | |
3731 const char * &opType)const{ | |
3732 uint position = position0; | |
3733 | |
3734 return (MatchNode::base_operand( position, globals, result, name, opType)); | |
3735 } | |
3736 | |
3737 | |
3738 bool MatchRule::is_base_register(FormDict &globals) const { | |
3739 uint position = 1; | |
3740 const char *result = NULL; | |
3741 const char *name = NULL; | |
3742 const char *opType = NULL; | |
3743 if (!base_operand(position, globals, result, name, opType)) { | |
3744 position = 0; | |
3745 if( base_operand(position, globals, result, name, opType) && | |
3746 (strcmp(opType,"RegI")==0 || | |
3747 strcmp(opType,"RegP")==0 || | |
113
ba764ed4b6f2
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coleenp
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diff
changeset
|
3748 strcmp(opType,"RegN")==0 || |
0 | 3749 strcmp(opType,"RegL")==0 || |
3750 strcmp(opType,"RegF")==0 || | |
3751 strcmp(opType,"RegD")==0 || | |
3752 strcmp(opType,"Reg" )==0) ) { | |
3753 return 1; | |
3754 } | |
3755 } | |
3756 return 0; | |
3757 } | |
3758 | |
3759 Form::DataType MatchRule::is_base_constant(FormDict &globals) const { | |
3760 uint position = 1; | |
3761 const char *result = NULL; | |
3762 const char *name = NULL; | |
3763 const char *opType = NULL; | |
3764 if (!base_operand(position, globals, result, name, opType)) { | |
3765 position = 0; | |
3766 if (base_operand(position, globals, result, name, opType)) { | |
3767 return ideal_to_const_type(opType); | |
3768 } | |
3769 } | |
3770 return Form::none; | |
3771 } | |
3772 | |
3773 bool MatchRule::is_chain_rule(FormDict &globals) const { | |
3774 | |
3775 // Check for chain rule, and do not generate a match list for it | |
3776 if ((_lChild == NULL) && (_rChild == NULL) ) { | |
3777 const Form *form = globals[_opType]; | |
3778 // If this is ideal, then it is a base match, not a chain rule. | |
3779 if ( form && form->is_operand() && (!form->ideal_only())) { | |
3780 return true; | |
3781 } | |
3782 } | |
3783 // Check for "Set" form of chain rule, and do not generate a match list | |
3784 if (_rChild) { | |
3785 const char *rch = _rChild->_opType; | |
3786 const Form *form = globals[rch]; | |
3787 if ((!strcmp(_opType,"Set") && | |
3788 ((form) && form->is_operand()))) { | |
3789 return true; | |
3790 } | |
3791 } | |
3792 return false; | |
3793 } | |
3794 | |
3795 int MatchRule::is_ideal_copy() const { | |
3796 if( _rChild ) { | |
3797 const char *opType = _rChild->_opType; | |
342
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diff
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|
3798 #if 1 |
37f87013dfd8
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diff
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|
3799 if( strcmp(opType,"CastIP")==0 ) |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
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113
diff
changeset
|
3800 return 1; |
37f87013dfd8
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diff
changeset
|
3801 #else |
0 | 3802 if( strcmp(opType,"CastII")==0 ) |
3803 return 1; | |
3804 // Do not treat *CastPP this way, because it | |
3805 // may transfer a raw pointer to an oop. | |
3806 // If the register allocator were to coalesce this | |
3807 // into a single LRG, the GC maps would be incorrect. | |
3808 //if( strcmp(opType,"CastPP")==0 ) | |
3809 // return 1; | |
3810 //if( strcmp(opType,"CheckCastPP")==0 ) | |
3811 // return 1; | |
3812 // | |
3813 // Do not treat CastX2P or CastP2X this way, because | |
3814 // raw pointers and int types are treated differently | |
3815 // when saving local & stack info for safepoints in | |
3816 // Output(). | |
3817 //if( strcmp(opType,"CastX2P")==0 ) | |
3818 // return 1; | |
3819 //if( strcmp(opType,"CastP2X")==0 ) | |
3820 // return 1; | |
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diff
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|
3821 #endif |
0 | 3822 } |
3823 if( is_chain_rule(_AD.globalNames()) && | |
3824 _lChild && strncmp(_lChild->_opType,"stackSlot",9)==0 ) | |
3825 return 1; | |
3826 return 0; | |
3827 } | |
3828 | |
3829 | |
3830 int MatchRule::is_expensive() const { | |
3831 if( _rChild ) { | |
3832 const char *opType = _rChild->_opType; | |
3833 if( strcmp(opType,"AtanD")==0 || | |
3834 strcmp(opType,"CosD")==0 || | |
3835 strcmp(opType,"DivD")==0 || | |
3836 strcmp(opType,"DivF")==0 || | |
3837 strcmp(opType,"DivI")==0 || | |
3838 strcmp(opType,"ExpD")==0 || | |
3839 strcmp(opType,"LogD")==0 || | |
3840 strcmp(opType,"Log10D")==0 || | |
3841 strcmp(opType,"ModD")==0 || | |
3842 strcmp(opType,"ModF")==0 || | |
3843 strcmp(opType,"ModI")==0 || | |
3844 strcmp(opType,"PowD")==0 || | |
3845 strcmp(opType,"SinD")==0 || | |
3846 strcmp(opType,"SqrtD")==0 || | |
3847 strcmp(opType,"TanD")==0 || | |
3848 strcmp(opType,"ConvD2F")==0 || | |
3849 strcmp(opType,"ConvD2I")==0 || | |
3850 strcmp(opType,"ConvD2L")==0 || | |
3851 strcmp(opType,"ConvF2D")==0 || | |
3852 strcmp(opType,"ConvF2I")==0 || | |
3853 strcmp(opType,"ConvF2L")==0 || | |
3854 strcmp(opType,"ConvI2D")==0 || | |
3855 strcmp(opType,"ConvI2F")==0 || | |
3856 strcmp(opType,"ConvI2L")==0 || | |
3857 strcmp(opType,"ConvL2D")==0 || | |
3858 strcmp(opType,"ConvL2F")==0 || | |
3859 strcmp(opType,"ConvL2I")==0 || | |
247 | 3860 strcmp(opType,"DecodeN")==0 || |
3861 strcmp(opType,"EncodeP")==0 || | |
0 | 3862 strcmp(opType,"RoundDouble")==0 || |
3863 strcmp(opType,"RoundFloat")==0 || | |
3864 strcmp(opType,"ReverseBytesI")==0 || | |
3865 strcmp(opType,"ReverseBytesL")==0 || | |
1396
d7f654633cfe
6946040: add intrinsic for short and char reverseBytes
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parents:
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diff
changeset
|
3866 strcmp(opType,"ReverseBytesUS")==0 || |
d7f654633cfe
6946040: add intrinsic for short and char reverseBytes
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parents:
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diff
changeset
|
3867 strcmp(opType,"ReverseBytesS")==0 || |
0 | 3868 strcmp(opType,"Replicate16B")==0 || |
3869 strcmp(opType,"Replicate8B")==0 || | |
3870 strcmp(opType,"Replicate4B")==0 || | |
3871 strcmp(opType,"Replicate8C")==0 || | |
3872 strcmp(opType,"Replicate4C")==0 || | |
3873 strcmp(opType,"Replicate8S")==0 || | |
3874 strcmp(opType,"Replicate4S")==0 || | |
3875 strcmp(opType,"Replicate4I")==0 || | |
3876 strcmp(opType,"Replicate2I")==0 || | |
3877 strcmp(opType,"Replicate2L")==0 || | |
3878 strcmp(opType,"Replicate4F")==0 || | |
3879 strcmp(opType,"Replicate2F")==0 || | |
3880 strcmp(opType,"Replicate2D")==0 || | |
3881 0 /* 0 to line up columns nicely */ ) | |
3882 return 1; | |
3883 } | |
3884 return 0; | |
3885 } | |
3886 | |
3887 bool MatchRule::is_ideal_unlock() const { | |
3888 if( !_opType ) return false; | |
3889 return !strcmp(_opType,"Unlock") || !strcmp(_opType,"FastUnlock"); | |
3890 } | |
3891 | |
3892 | |
3893 bool MatchRule::is_ideal_call_leaf() const { | |
3894 if( !_opType ) return false; | |
3895 return !strcmp(_opType,"CallLeaf") || | |
3896 !strcmp(_opType,"CallLeafNoFP"); | |
3897 } | |
3898 | |
3899 | |
3900 bool MatchRule::is_ideal_if() const { | |
3901 if( !_opType ) return false; | |
3902 return | |
3903 !strcmp(_opType,"If" ) || | |
3904 !strcmp(_opType,"CountedLoopEnd"); | |
3905 } | |
3906 | |
3907 bool MatchRule::is_ideal_fastlock() const { | |
3908 if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) { | |
3909 return (strcmp(_rChild->_opType,"FastLock") == 0); | |
3910 } | |
3911 return false; | |
3912 } | |
3913 | |
3914 bool MatchRule::is_ideal_membar() const { | |
3915 if( !_opType ) return false; | |
3916 return | |
3917 !strcmp(_opType,"MemBarAcquire" ) || | |
3918 !strcmp(_opType,"MemBarRelease" ) || | |
3919 !strcmp(_opType,"MemBarVolatile" ) || | |
3920 !strcmp(_opType,"MemBarCPUOrder" ) ; | |
3921 } | |
3922 | |
3923 bool MatchRule::is_ideal_loadPC() const { | |
3924 if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) { | |
3925 return (strcmp(_rChild->_opType,"LoadPC") == 0); | |
3926 } | |
3927 return false; | |
3928 } | |
3929 | |
3930 bool MatchRule::is_ideal_box() const { | |
3931 if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) { | |
3932 return (strcmp(_rChild->_opType,"Box") == 0); | |
3933 } | |
3934 return false; | |
3935 } | |
3936 | |
3937 bool MatchRule::is_ideal_goto() const { | |
3938 bool ideal_goto = false; | |
3939 | |
3940 if( _opType && (strcmp(_opType,"Goto") == 0) ) { | |
3941 ideal_goto = true; | |
3942 } | |
3943 return ideal_goto; | |
3944 } | |
3945 | |
3946 bool MatchRule::is_ideal_jump() const { | |
3947 if( _opType ) { | |
3948 if( !strcmp(_opType,"Jump") ) | |
3949 return true; | |
3950 } | |
3951 return false; | |
3952 } | |
3953 | |
3954 bool MatchRule::is_ideal_bool() const { | |
3955 if( _opType ) { | |
3956 if( !strcmp(_opType,"Bool") ) | |
3957 return true; | |
3958 } | |
3959 return false; | |
3960 } | |
3961 | |
3962 | |
3963 Form::DataType MatchRule::is_ideal_load() const { | |
3964 Form::DataType ideal_load = Form::none; | |
3965 | |
3966 if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) { | |
3967 const char *opType = _rChild->_opType; | |
3968 ideal_load = is_load_from_memory(opType); | |
3969 } | |
3970 | |
3971 return ideal_load; | |
3972 } | |
3973 | |
3974 | |
855
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
3975 bool MatchRule::skip_antidep_check() const { |
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
3976 // Some loads operate on what is effectively immutable memory so we |
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
3977 // should skip the anti dep computations. For some of these nodes |
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
3978 // the rewritable field keeps the anti dep logic from triggering but |
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
3979 // for certain kinds of LoadKlass it does not since they are |
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
3980 // actually reading memory which could be rewritten by the runtime, |
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
3981 // though never by generated code. This disables it uniformly for |
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
3982 // the nodes that behave like this: LoadKlass, LoadNKlass and |
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
3983 // LoadRange. |
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
3984 if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) { |
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
3985 const char *opType = _rChild->_opType; |
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
3986 if (strcmp("LoadKlass", opType) == 0 || |
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
3987 strcmp("LoadNKlass", opType) == 0 || |
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
3988 strcmp("LoadRange", opType) == 0) { |
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
3989 return true; |
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
3990 } |
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
3991 } |
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
3992 |
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
3993 return false; |
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
3994 } |
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
3995 |
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
3996 |
0 | 3997 Form::DataType MatchRule::is_ideal_store() const { |
3998 Form::DataType ideal_store = Form::none; | |
3999 | |
4000 if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) { | |
4001 const char *opType = _rChild->_opType; | |
4002 ideal_store = is_store_to_memory(opType); | |
4003 } | |
4004 | |
4005 return ideal_store; | |
4006 } | |
4007 | |
4008 | |
4009 void MatchRule::dump() { | |
4010 output(stderr); | |
4011 } | |
4012 | |
4013 void MatchRule::output(FILE *fp) { | |
4014 fprintf(fp,"MatchRule: ( %s",_name); | |
4015 if (_lChild) _lChild->output(fp); | |
4016 if (_rChild) _rChild->output(fp); | |
4017 fprintf(fp," )\n"); | |
4018 fprintf(fp," nesting depth = %d\n", _depth); | |
4019 if (_result) fprintf(fp," Result Type = %s", _result); | |
4020 fprintf(fp,"\n"); | |
4021 } | |
4022 | |
4023 //------------------------------Attribute-------------------------------------- | |
4024 Attribute::Attribute(char *id, char* val, int type) | |
4025 : _ident(id), _val(val), _atype(type) { | |
4026 } | |
4027 Attribute::~Attribute() { | |
4028 } | |
4029 | |
4030 int Attribute::int_val(ArchDesc &ad) { | |
4031 // Make sure it is an integer constant: | |
4032 int result = 0; | |
4033 if (!_val || !ADLParser::is_int_token(_val, result)) { | |
4034 ad.syntax_err(0, "Attribute %s must have an integer value: %s", | |
4035 _ident, _val ? _val : ""); | |
4036 } | |
4037 return result; | |
4038 } | |
4039 | |
4040 void Attribute::dump() { | |
4041 output(stderr); | |
4042 } // Debug printer | |
4043 | |
4044 // Write to output files | |
4045 void Attribute::output(FILE *fp) { | |
4046 fprintf(fp,"Attribute: %s %s\n", (_ident?_ident:""), (_val?_val:"")); | |
4047 } | |
4048 | |
4049 //------------------------------FormatRule---------------------------------- | |
4050 FormatRule::FormatRule(char *temp) | |
4051 : _temp(temp) { | |
4052 } | |
4053 FormatRule::~FormatRule() { | |
4054 } | |
4055 | |
4056 void FormatRule::dump() { | |
4057 output(stderr); | |
4058 } | |
4059 | |
4060 // Write to output files | |
4061 void FormatRule::output(FILE *fp) { | |
4062 fprintf(fp,"\nFormat Rule: \n%s", (_temp?_temp:"")); | |
4063 fprintf(fp,"\n"); | |
4064 } |