1 /*
2 * Copyright 1998-2007 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact 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
423 // Return 'true' if this instruction matches an ideal 'Load?' node
424 Form::DataType InstructForm::is_ideal_store() const {
425 if( _matrule == NULL ) return Form::none;
426
427 return _matrule->is_ideal_store();
428 }
429
430 // Return the input register that must match the output register
431 // If this is not required, return 0
432 uint InstructForm::two_address(FormDict &globals) {
433 uint matching_input = 0;
434 if(_components.count() == 0) return 0;
435
436 _components.reset();
437 Component *comp = _components.iter();
438 // Check if there is a DEF
439 if( comp->isa(Component::DEF) ) {
440 // Check that this is a register
441 const char *def_type = comp->_type;
442 const Form *form = globals[def_type];
443 OperandForm *op = form->is_operand();
444 if( op ) {
445 if( op->constrained_reg_class() != NULL &&
446 op->interface_type(globals) == Form::register_interface ) {
447 // Remember the local name for equality test later
448 const char *def_name = comp->_name;
449 // Check if a component has the same name and is a USE
450 do {
451 if( comp->isa(Component::USE) && strcmp(comp->_name,def_name)==0 ) {
452 return operand_position_format(def_name);
453 }
454 } while( (comp = _components.iter()) != NULL);
455 }
456 }
457 }
458
459 return 0;
460 }
461
462
463 // when chaining a constant to an instruction, returns 'true' and sets opType
464 Form::DataType InstructForm::is_chain_of_constant(FormDict &globals) {
465 const char *dummy = NULL;
466 const char *dummy2 = NULL;
467 return is_chain_of_constant(globals, dummy, dummy2);
468 }
469 Form::DataType InstructForm::is_chain_of_constant(FormDict &globals,
470 const char * &opTypeParam) {
471 const char *result = NULL;
472
473 return is_chain_of_constant(globals, opTypeParam, result);
474 }
475
476 Form::DataType InstructForm::is_chain_of_constant(FormDict &globals,
477 const char * &opTypeParam, const char * &resultParam) {
478 Form::DataType data_type = Form::none;
479 if ( ! _matrule) return data_type;
480
481 // !!!!!
482 // The source of the chain rule is 'position = 1'
483 uint position = 1;
484 const char *result = NULL;
485 const char *name = NULL;
486 const char *opType = NULL;
487 // Here base_operand is looking for an ideal type to be returned (opType).
488 if ( _matrule->is_chain_rule(globals)
489 && _matrule->base_operand(position, globals, result, name, opType) ) {
490 data_type = ideal_to_const_type(opType);
491
492 // if it isn't an ideal constant type, just return
493 if ( data_type == Form::none ) return data_type;
494
495 // Ideal constant types also adjust the opType parameter.
496 resultParam = result;
497 opTypeParam = opType;
498 return data_type;
499 }
500
501 return data_type;
502 }
503
504 // Check if a simple chain rule
505 bool InstructForm::is_simple_chain_rule(FormDict &globals) const {
506 if( _matrule && _matrule->sets_result()
507 && _matrule->_rChild->_lChild == NULL
508 && globals[_matrule->_rChild->_opType]
509 && globals[_matrule->_rChild->_opType]->is_opclass() ) {
510 return true;
511 }
512 return false;
513 }
514
515 // check for structural rematerialization
516 bool InstructForm::rematerialize(FormDict &globals, RegisterForm *registers ) {
517 bool rematerialize = false;
518
519 Form::DataType data_type = is_chain_of_constant(globals);
520 if( data_type != Form::none )
521 rematerialize = true;
522
523 // Constants
524 if( _components.count() == 1 && _components[0]->is(Component::USE_DEF) )
525 rematerialize = true;
526
527 // Pseudo-constants (values easily available to the runtime)
528 if (is_empty_encoding() && is_tls_instruction())
529 rematerialize = true;
530
531 // 1-input, 1-output, such as copies or increments.
532 if( _components.count() == 2 &&
533 _components[0]->is(Component::DEF) &&
534 _components[1]->isa(Component::USE) )
535 rematerialize = true;
536
537 // Check for an ideal 'Load?' and eliminate rematerialize option
538 if ( is_ideal_load() != Form::none || // Ideal load? Do not rematerialize
539 is_ideal_copy() != Form::none || // Ideal copy? Do not rematerialize
540 is_expensive() != Form::none) { // Expensive? Do not rematerialize
541 rematerialize = false;
542 }
543
544 // Always rematerialize the flags. They are more expensive to save &
545 // restore than to recompute (and possibly spill the compare's inputs).
546 if( _components.count() >= 1 ) {
547 Component *c = _components[0];
548 const Form *form = globals[c->_type];
549 OperandForm *opform = form->is_operand();
550 if( opform ) {
551 // Avoid the special stack_slots register classes
552 const char *rc_name = opform->constrained_reg_class();
553 if( rc_name ) {
554 if( strcmp(rc_name,"stack_slots") ) {
555 // Check for ideal_type of RegFlags
556 const char *type = opform->ideal_type( globals, registers );
557 if( !strcmp(type,"RegFlags") )
558 rematerialize = true;
559 } else
560 rematerialize = false; // Do not rematerialize things target stk
561 }
562 }
563 }
564
565 return rematerialize;
566 }
567
568 // loads from memory, so must check for anti-dependence
569 bool InstructForm::needs_anti_dependence_check(FormDict &globals) const {
570 // Machine independent loads must be checked for anti-dependences
571 if( is_ideal_load() != Form::none ) return true;
572
573 // !!!!! !!!!! !!!!!
574 // TEMPORARY
575 // if( is_simple_chain_rule(globals) ) return false;
576
577 // String-compare uses many memorys edges, but writes none
578 if( _matrule && _matrule->_rChild &&
579 strcmp(_matrule->_rChild->_opType,"StrComp")==0 )
580 return true;
581
582 // Check if instruction has a USE of a memory operand class, but no defs
583 bool USE_of_memory = false;
584 bool DEF_of_memory = false;
585 Component *comp = NULL;
586 ComponentList &components = (ComponentList &)_components;
587
588 components.reset();
589 while( (comp = components.iter()) != NULL ) {
590 const Form *form = globals[comp->_type];
591 if( !form ) continue;
592 OpClassForm *op = form->is_opclass();
593 if( !op ) continue;
594 if( form->interface_type(globals) == Form::memory_interface ) {
595 if( comp->isa(Component::USE) ) USE_of_memory = true;
596 if( comp->isa(Component::DEF) ) {
597 OperandForm *oper = form->is_operand();
598 if( oper && oper->is_user_name_for_sReg() ) {
599 // Stack slots are unaliased memory handled by allocator
600 oper = oper; // debug stopping point !!!!!
601 } else {
602 DEF_of_memory = true;
603 }
604 }
605 }
606 }
607 return (USE_of_memory && !DEF_of_memory);
608 }
609
610
611 bool InstructForm::is_wide_memory_kill(FormDict &globals) const {
612 if( _matrule == NULL ) return false;
613 if( !_matrule->_opType ) return false;
614
615 if( strcmp(_matrule->_opType,"MemBarRelease") == 0 ) return true;
616 if( strcmp(_matrule->_opType,"MemBarAcquire") == 0 ) return true;
617
618 return false;
619 }
620
621 int InstructForm::memory_operand(FormDict &globals) const {
622 // Machine independent loads must be checked for anti-dependences
623 // Check if instruction has a USE of a memory operand class, or a def.
624 int USE_of_memory = 0;
625 int DEF_of_memory = 0;
626 const char* last_memory_DEF = NULL; // to test DEF/USE pairing in asserts
627 Component *unique = NULL;
628 Component *comp = NULL;
629 ComponentList &components = (ComponentList &)_components;
630
631 components.reset();
632 while( (comp = components.iter()) != NULL ) {
633 const Form *form = globals[comp->_type];
634 if( !form ) continue;
635 OpClassForm *op = form->is_opclass();
636 if( !op ) continue;
637 if( op->stack_slots_only(globals) ) continue;
638 if( form->interface_type(globals) == Form::memory_interface ) {
639 if( comp->isa(Component::DEF) ) {
640 last_memory_DEF = comp->_name;
641 DEF_of_memory++;
642 unique = comp;
643 } else if( comp->isa(Component::USE) ) {
644 if( last_memory_DEF != NULL ) {
645 assert(0 == strcmp(last_memory_DEF, comp->_name), "every memory DEF is followed by a USE of the same name");
646 last_memory_DEF = NULL;
647 }
648 USE_of_memory++;
649 if (DEF_of_memory == 0) // defs take precedence
650 unique = comp;
651 } else {
652 assert(last_memory_DEF == NULL, "unpaired memory DEF");
653 }
654 }
655 }
656 assert(last_memory_DEF == NULL, "unpaired memory DEF");
657 assert(USE_of_memory >= DEF_of_memory, "unpaired memory DEF");
658 USE_of_memory -= DEF_of_memory; // treat paired DEF/USE as one occurrence
659 if( (USE_of_memory + DEF_of_memory) > 0 ) {
660 if( is_simple_chain_rule(globals) ) {
661 //fprintf(stderr, "Warning: chain rule is not really a memory user.\n");
662 //((InstructForm*)this)->dump();
663 // Preceding code prints nothing on sparc and these insns on intel:
664 // leaP8 leaP32 leaPIdxOff leaPIdxScale leaPIdxScaleOff leaP8 leaP32
665 // leaPIdxOff leaPIdxScale leaPIdxScaleOff
666 return NO_MEMORY_OPERAND;
667 }
668
669 if( DEF_of_memory == 1 ) {
670 assert(unique != NULL, "");
671 if( USE_of_memory == 0 ) {
672 // unique def, no uses
673 } else {
674 // // unique def, some uses
675 // // must return bottom unless all uses match def
676 // unique = NULL;
677 }
678 } else if( DEF_of_memory > 0 ) {
679 // multiple defs, don't care about uses
680 unique = NULL;
681 } else if( USE_of_memory == 1) {
682 // unique use, no defs
683 assert(unique != NULL, "");
684 } else if( USE_of_memory > 0 ) {
685 // multiple uses, no defs
686 unique = NULL;
687 } else {
688 assert(false, "bad case analysis");
689 }
690 // process the unique DEF or USE, if there is one
691 if( unique == NULL ) {
692 return MANY_MEMORY_OPERANDS;
693 } else {
694 int pos = components.operand_position(unique->_name);
695 if( unique->isa(Component::DEF) ) {
696 pos += 1; // get corresponding USE from DEF
697 }
698 assert(pos >= 1, "I was just looking at it!");
699 return pos;
700 }
701 }
702
703 // missed the memory op??
704 if( true ) { // %%% should not be necessary
705 if( is_ideal_store() != Form::none ) {
706 fprintf(stderr, "Warning: cannot find memory opnd in instr.\n");
707 ((InstructForm*)this)->dump();
708 // pretend it has multiple defs and uses
709 return MANY_MEMORY_OPERANDS;
710 }
711 if( is_ideal_load() != Form::none ) {
712 fprintf(stderr, "Warning: cannot find memory opnd in instr.\n");
713 ((InstructForm*)this)->dump();
714 // pretend it has multiple uses and no defs
715 return MANY_MEMORY_OPERANDS;
716 }
717 }
718
719 return NO_MEMORY_OPERAND;
720 }
721
722
723 // This instruction captures the machine-independent bottom_type
724 // Expected use is for pointer vs oop determination for LoadP
725 bool InstructForm::captures_bottom_type() const {
726 if( _matrule && _matrule->_rChild &&
727 (!strcmp(_matrule->_rChild->_opType,"CastPP") || // new result type
728 !strcmp(_matrule->_rChild->_opType,"CastX2P") || // new result type
729 !strcmp(_matrule->_rChild->_opType,"DecodeN") ||
730 !strcmp(_matrule->_rChild->_opType,"EncodeP") ||
731 !strcmp(_matrule->_rChild->_opType,"LoadN") ||
732 !strcmp(_matrule->_rChild->_opType,"LoadNKlass") ||
733 !strcmp(_matrule->_rChild->_opType,"CreateEx") || // type of exception
734 !strcmp(_matrule->_rChild->_opType,"CheckCastPP")) ) return true;
735 else if ( is_ideal_load() == Form::idealP ) return true;
736 else if ( is_ideal_store() != Form::none ) return true;
737
738 return false;
739 }
740
741
742 // Access instr_cost attribute or return NULL.
743 const char* InstructForm::cost() {
744 for (Attribute* cur = _attribs; cur != NULL; cur = (Attribute*)cur->_next) {
745 if( strcmp(cur->_ident,AttributeForm::_ins_cost) == 0 ) {
746 return cur->_val;
747 }
748 }
749 return NULL;
750 }
751
752 // Return count of top-level operands.
753 uint InstructForm::num_opnds() {
754 int num_opnds = _components.num_operands();
755
756 // Need special handling for matching some ideal nodes
757 // i.e. Matching a return node
758 /*
759 if( _matrule ) {
760 if( strcmp(_matrule->_opType,"Return" )==0 ||
761 strcmp(_matrule->_opType,"Halt" )==0 )
762 return 3;
763 }
764 */
765 return num_opnds;
766 }
767
768 // Return count of unmatched operands.
769 uint InstructForm::num_post_match_opnds() {
770 uint num_post_match_opnds = _components.count();
771 uint num_match_opnds = _components.match_count();
772 num_post_match_opnds = num_post_match_opnds - num_match_opnds;
773
774 return num_post_match_opnds;
775 }
776
777 // Return the number of leaves below this complex operand
778 uint InstructForm::num_consts(FormDict &globals) const {
779 if ( ! _matrule) return 0;
780
781 // This is a recursive invocation on all operands in the matchrule
782 return _matrule->num_consts(globals);
783 }
784
785 // Constants in match rule with specified type
786 uint InstructForm::num_consts(FormDict &globals, Form::DataType type) const {
787 if ( ! _matrule) return 0;
788
789 // This is a recursive invocation on all operands in the matchrule
790 return _matrule->num_consts(globals, type);
791 }
792
793
794 // Return the register class associated with 'leaf'.
795 const char *InstructForm::out_reg_class(FormDict &globals) {
796 assert( false, "InstructForm::out_reg_class(FormDict &globals); Not Implemented");
797
798 return NULL;
799 }
800
801
802
803 // Lookup the starting position of inputs we are interested in wrt. ideal nodes
804 uint InstructForm::oper_input_base(FormDict &globals) {
805 if( !_matrule ) return 1; // Skip control for most nodes
806
807 // Need special handling for matching some ideal nodes
808 // i.e. Matching a return node
809 if( strcmp(_matrule->_opType,"Return" )==0 ||
810 strcmp(_matrule->_opType,"Rethrow" )==0 ||
811 strcmp(_matrule->_opType,"TailCall" )==0 ||
812 strcmp(_matrule->_opType,"TailJump" )==0 ||
813 strcmp(_matrule->_opType,"SafePoint" )==0 ||
814 strcmp(_matrule->_opType,"Halt" )==0 )
815 return AdlcVMDeps::Parms; // Skip the machine-state edges
816
817 if( _matrule->_rChild &&
818 strcmp(_matrule->_rChild->_opType,"StrComp")==0 ) {
819 // String compare takes 1 control and 4 memory edges.
820 return 5;
821 }
822
823 // Check for handling of 'Memory' input/edge in the ideal world.
824 // The AD file writer is shielded from knowledge of these edges.
825 int base = 1; // Skip control
826 base += _matrule->needs_ideal_memory_edge(globals);
827
828 // Also skip the base-oop value for uses of derived oops.
829 // The AD file writer is shielded from knowledge of these edges.
830 base += needs_base_oop_edge(globals);
831
832 return base;
833 }
834
835 // Implementation does not modify state of internal structures
836 void InstructForm::build_components() {
837 // Add top-level operands to the components
838 if (_matrule) _matrule->append_components(_localNames, _components);
839
840 // Add parameters that "do not appear in match rule".
841 bool has_temp = false;
842 const char *name;
843 const char *kill_name = NULL;
844 for (_parameters.reset(); (name = _parameters.iter()) != NULL;) {
845 OperandForm *opForm = (OperandForm*)_localNames[name];
846
847 const Form *form = _effects[name];
848 Effect *e = form ? form->is_effect() : NULL;
849 if (e != NULL) {
850 has_temp |= e->is(Component::TEMP);
851
852 // KILLs must be declared after any TEMPs because TEMPs are real
853 // uses so their operand numbering must directly follow the real
854 // inputs from the match rule. Fixing the numbering seems
855 // complex so simply enforce the restriction during parse.
856 if (kill_name != NULL &&
857 e->isa(Component::TEMP) && !e->isa(Component::DEF)) {
858 OperandForm* kill = (OperandForm*)_localNames[kill_name];
859 globalAD->syntax_err(_linenum, "%s: %s %s must be at the end of the argument list\n",
860 _ident, kill->_ident, kill_name);
861 } else if (e->isa(Component::KILL)) {
862 kill_name = name;
863 }
864
865 // TEMPs are real uses and need to be among the first parameters
866 // listed, otherwise the numbering of operands and inputs gets
867 // screwy, so enforce this restriction during parse.
868 if (kill_name != NULL &&
869 e->isa(Component::TEMP) && !e->isa(Component::DEF)) {
870 OperandForm* kill = (OperandForm*)_localNames[kill_name];
871 globalAD->syntax_err(_linenum, "%s: %s %s must follow %s %s in the argument list\n",
872 _ident, kill->_ident, kill_name, opForm->_ident, name);
873 } else if (e->isa(Component::KILL)) {
874 kill_name = name;
875 }
876 }
877
878 const Component *component = _components.search(name);
879 if ( component == NULL ) {
880 if (e) {
881 _components.insert(name, opForm->_ident, e->_use_def, false);
882 component = _components.search(name);
883 if (component->isa(Component::USE) && !component->isa(Component::TEMP) && _matrule) {
884 const Form *form = globalAD->globalNames()[component->_type];
885 assert( form, "component type must be a defined form");
886 OperandForm *op = form->is_operand();
887 if (op->_interface && op->_interface->is_RegInterface()) {
888 globalAD->syntax_err(_linenum, "%s: illegal USE of non-input: %s %s\n",
889 _ident, opForm->_ident, name);
890 }
891 }
892 } else {
893 // This would be a nice warning but it triggers in a few places in a benign way
894 // if (_matrule != NULL && !expands()) {
895 // globalAD->syntax_err(_linenum, "%s: %s %s not mentioned in effect or match rule\n",
896 // _ident, opForm->_ident, name);
897 // }
898 _components.insert(name, opForm->_ident, Component::INVALID, false);
899 }
900 }
901 else if (e) {
902 // Component was found in the list
903 // Check if there is a new effect that requires an extra component.
904 // This happens when adding 'USE' to a component that is not yet one.
905 if ((!component->isa( Component::USE) && ((e->_use_def & Component::USE) != 0))) {
906 if (component->isa(Component::USE) && _matrule) {
907 const Form *form = globalAD->globalNames()[component->_type];
908 assert( form, "component type must be a defined form");
909 OperandForm *op = form->is_operand();
910 if (op->_interface && op->_interface->is_RegInterface()) {
911 globalAD->syntax_err(_linenum, "%s: illegal USE of non-input: %s %s\n",
912 _ident, opForm->_ident, name);
913 }
914 }
915 _components.insert(name, opForm->_ident, e->_use_def, false);
916 } else {
917 Component *comp = (Component*)component;
918 comp->promote_use_def_info(e->_use_def);
919 }
920 // Component positions are zero based.
921 int pos = _components.operand_position(name);
922 assert( ! (component->isa(Component::DEF) && (pos >= 1)),
923 "Component::DEF can only occur in the first position");
924 }
925 }
926
927 // Resolving the interactions between expand rules and TEMPs would
928 // be complex so simply disallow it.
929 if (_matrule == NULL && has_temp) {
930 globalAD->syntax_err(_linenum, "%s: TEMPs without match rule isn't supported\n", _ident);
931 }
932
933 return;
934 }
935
936 // Return zero-based position in component list; -1 if not in list.
937 int InstructForm::operand_position(const char *name, int usedef) {
938 return unique_opnds_idx(_components.operand_position(name, usedef));
939 }
940
941 int InstructForm::operand_position_format(const char *name) {
942 return unique_opnds_idx(_components.operand_position_format(name));
943 }
944
945 // Return zero-based position in component list; -1 if not in list.
946 int InstructForm::label_position() {
947 return unique_opnds_idx(_components.label_position());
948 }
949
950 int InstructForm::method_position() {
951 return unique_opnds_idx(_components.method_position());
952 }
953
954 // Return number of relocation entries needed for this instruction.
955 uint InstructForm::reloc(FormDict &globals) {
956 uint reloc_entries = 0;
957 // Check for "Call" nodes
958 if ( is_ideal_call() ) ++reloc_entries;
959 if ( is_ideal_return() ) ++reloc_entries;
960 if ( is_ideal_safepoint() ) ++reloc_entries;
961
962
963 // Check if operands MAYBE oop pointers, by checking for ConP elements
964 // Proceed through the leaves of the match-tree and check for ConPs
965 if ( _matrule != NULL ) {
966 uint position = 0;
967 const char *result = NULL;
968 const char *name = NULL;
969 const char *opType = NULL;
970 while (_matrule->base_operand(position, globals, result, name, opType)) {
971 if ( strcmp(opType,"ConP") == 0 ) {
972 #ifdef SPARC
973 reloc_entries += 2; // 1 for sethi + 1 for setlo
974 #else
975 ++reloc_entries;
976 #endif
977 }
978 ++position;
979 }
980 }
981
982 // Above is only a conservative estimate
983 // because it did not check contents of operand classes.
984 // !!!!! !!!!!
985 // Add 1 to reloc info for each operand class in the component list.
986 Component *comp;
987 _components.reset();
988 while ( (comp = _components.iter()) != NULL ) {
989 const Form *form = globals[comp->_type];
990 assert( form, "Did not find component's type in global names");
991 const OpClassForm *opc = form->is_opclass();
992 const OperandForm *oper = form->is_operand();
993 if ( opc && (oper == NULL) ) {
994 ++reloc_entries;
995 } else if ( oper ) {
996 // floats and doubles loaded out of method's constant pool require reloc info
997 Form::DataType type = oper->is_base_constant(globals);
998 if ( (type == Form::idealF) || (type == Form::idealD) ) {
999 ++reloc_entries;
1000 }
1001 }
1002 }
1003
1004 // Float and Double constants may come from the CodeBuffer table
1005 // and require relocatable addresses for access
1006 // !!!!!
1007 // Check for any component being an immediate float or double.
1008 Form::DataType data_type = is_chain_of_constant(globals);
1009 if( data_type==idealD || data_type==idealF ) {
1010 #ifdef SPARC
1011 // sparc required more relocation entries for floating constants
1012 // (expires 9/98)
1013 reloc_entries += 6;
1014 #else
1015 reloc_entries++;
1016 #endif
1017 }
1018
1019 return reloc_entries;
1020 }
1021
1022 // Utility function defined in archDesc.cpp
1023 extern bool is_def(int usedef);
1024
1025 // Return the result of reducing an instruction
1026 const char *InstructForm::reduce_result() {
1027 const char* result = "Universe"; // default
1028 _components.reset();
1029 Component *comp = _components.iter();
1030 if (comp != NULL && comp->isa(Component::DEF)) {
1031 result = comp->_type;
1032 // Override this if the rule is a store operation:
1033 if (_matrule && _matrule->_rChild &&
1034 is_store_to_memory(_matrule->_rChild->_opType))
1035 result = "Universe";
1036 }
1037 return result;
1038 }
1039
1040 // Return the name of the operand on the right hand side of the binary match
1041 // Return NULL if there is no right hand side
1042 const char *InstructForm::reduce_right(FormDict &globals) const {
1043 if( _matrule == NULL ) return NULL;
1044 return _matrule->reduce_right(globals);
1045 }
1046
1047 // Similar for left
1048 const char *InstructForm::reduce_left(FormDict &globals) const {
1049 if( _matrule == NULL ) return NULL;
1050 return _matrule->reduce_left(globals);
1051 }
1052
1053
1054 // Base class for this instruction, MachNode except for calls
1055 const char *InstructForm::mach_base_class() const {
1056 if( is_ideal_call() == Form::JAVA_STATIC ) {
1057 return "MachCallStaticJavaNode";
1058 }
1059 else if( is_ideal_call() == Form::JAVA_DYNAMIC ) {
1060 return "MachCallDynamicJavaNode";
1061 }
1062 else if( is_ideal_call() == Form::JAVA_RUNTIME ) {
1063 return "MachCallRuntimeNode";
1064 }
1065 else if( is_ideal_call() == Form::JAVA_LEAF ) {
1066 return "MachCallLeafNode";
1067 }
1068 else if (is_ideal_return()) {
1069 return "MachReturnNode";
1070 }
1071 else if (is_ideal_halt()) {
1072 return "MachHaltNode";
1073 }
1074 else if (is_ideal_safepoint()) {
1075 return "MachSafePointNode";
1076 }
1077 else if (is_ideal_if()) {
1078 return "MachIfNode";
1079 }
1080 else if (is_ideal_fastlock()) {
1081 return "MachFastLockNode";
1082 }
1083 else if (is_ideal_nop()) {
1084 return "MachNopNode";
1085 }
1086 else if (captures_bottom_type()) {
1087 return "MachTypeNode";
1088 } else {
1089 return "MachNode";
1090 }
1091 assert( false, "ShouldNotReachHere()");
1092 return NULL;
1093 }
1094
1095 // Compare the instruction predicates for textual equality
1096 bool equivalent_predicates( const InstructForm *instr1, const InstructForm *instr2 ) {
1097 const Predicate *pred1 = instr1->_predicate;
1098 const Predicate *pred2 = instr2->_predicate;
1099 if( pred1 == NULL && pred2 == NULL ) {
1100 // no predicates means they are identical
1101 return true;
1102 }
1103 if( pred1 != NULL && pred2 != NULL ) {
1104 // compare the predicates
1105 const char *str1 = pred1->_pred;
1106 const char *str2 = pred2->_pred;
1107 if( (str1 == NULL && str2 == NULL)
1108 || (str1 != NULL && str2 != NULL && strcmp(str1,str2) == 0) ) {
1109 return true;
1110 }
1111 }
1112
1113 return false;
1114 }
1115
1116 // Check if this instruction can cisc-spill to 'alternate'
1117 bool InstructForm::cisc_spills_to(ArchDesc &AD, InstructForm *instr) {
1118 assert( _matrule != NULL && instr->_matrule != NULL, "must have match rules");
1119 // Do not replace if a cisc-version has been found.
1120 if( cisc_spill_operand() != Not_cisc_spillable ) return false;
1121
1122 int cisc_spill_operand = Maybe_cisc_spillable;
1123 char *result = NULL;
1124 char *result2 = NULL;
1125 const char *op_name = NULL;
1126 const char *reg_type = NULL;
1127 FormDict &globals = AD.globalNames();
1128 cisc_spill_operand = _matrule->cisc_spill_match(globals, AD.get_registers(), instr->_matrule, op_name, reg_type);
1129 if( (cisc_spill_operand != Not_cisc_spillable) && (op_name != NULL) && equivalent_predicates(this, instr) ) {
1130 cisc_spill_operand = operand_position(op_name, Component::USE);
1131 int def_oper = operand_position(op_name, Component::DEF);
1132 if( def_oper == NameList::Not_in_list && instr->num_opnds() == num_opnds()) {
1133 // Do not support cisc-spilling for destination operands and
1134 // make sure they have the same number of operands.
1135 _cisc_spill_alternate = instr;
1136 instr->set_cisc_alternate(true);
1137 if( AD._cisc_spill_debug ) {
1138 fprintf(stderr, "Instruction %s cisc-spills-to %s\n", _ident, instr->_ident);
1139 fprintf(stderr, " using operand %s %s at index %d\n", reg_type, op_name, cisc_spill_operand);
1140 }
1141 // Record that a stack-version of the reg_mask is needed
1142 // !!!!!
1143 OperandForm *oper = (OperandForm*)(globals[reg_type]->is_operand());
1144 assert( oper != NULL, "cisc-spilling non operand");
1145 const char *reg_class_name = oper->constrained_reg_class();
1146 AD.set_stack_or_reg(reg_class_name);
1147 const char *reg_mask_name = AD.reg_mask(*oper);
1148 set_cisc_reg_mask_name(reg_mask_name);
1149 const char *stack_or_reg_mask_name = AD.stack_or_reg_mask(*oper);
1150 } else {
1151 cisc_spill_operand = Not_cisc_spillable;
1152 }
1153 } else {
1154 cisc_spill_operand = Not_cisc_spillable;
1155 }
1156
1157 set_cisc_spill_operand(cisc_spill_operand);
1158 return (cisc_spill_operand != Not_cisc_spillable);
1159 }
1160
1161 // Check to see if this instruction can be replaced with the short branch
1162 // instruction `short-branch'
1163 bool InstructForm::check_branch_variant(ArchDesc &AD, InstructForm *short_branch) {
1164 if (_matrule != NULL &&
1165 this != short_branch && // Don't match myself
1166 !is_short_branch() && // Don't match another short branch variant
1167 reduce_result() != NULL &&
1168 strcmp(reduce_result(), short_branch->reduce_result()) == 0 &&
1169 _matrule->equivalent(AD.globalNames(), short_branch->_matrule)) {
1170 // The instructions are equivalent.
1171 if (AD._short_branch_debug) {
1172 fprintf(stderr, "Instruction %s has short form %s\n", _ident, short_branch->_ident);
1173 }
1174 _short_branch_form = short_branch;
1175 return true;
1176 }
1177 return false;
1178 }
1179
1180
1181 // --------------------------- FILE *output_routines
1182 //
1183 // Generate the format call for the replacement variable
1184 void InstructForm::rep_var_format(FILE *fp, const char *rep_var) {
1185 // Find replacement variable's type
1186 const Form *form = _localNames[rep_var];
1187 if (form == NULL) {
1188 fprintf(stderr, "unknown replacement variable in format statement: '%s'\n", rep_var);
1189 assert(false, "ShouldNotReachHere()");
1190 }
1191 OpClassForm *opc = form->is_opclass();
1192 assert( opc, "replacement variable was not found in local names");
1193 // Lookup the index position of the replacement variable
1194 int idx = operand_position_format(rep_var);
1195 if ( idx == -1 ) {
1196 assert( strcmp(opc->_ident,"label")==0, "Unimplemented");
1197 assert( false, "ShouldNotReachHere()");
1198 }
1199
1200 if (is_noninput_operand(idx)) {
1201 // This component isn't in the input array. Print out the static
1202 // name of the register.
1203 OperandForm* oper = form->is_operand();
1204 if (oper != NULL && oper->is_bound_register()) {
1205 const RegDef* first = oper->get_RegClass()->find_first_elem();
1206 fprintf(fp, " tty->print(\"%s\");\n", first->_regname);
1207 } else {
1208 globalAD->syntax_err(_linenum, "In %s can't find format for %s %s", _ident, opc->_ident, rep_var);
1209 }
1210 } else {
1211 // Output the format call for this operand
1212 fprintf(fp,"opnd_array(%d)->",idx);
1213 if (idx == 0)
1214 fprintf(fp,"int_format(ra, this, st); // %s\n", rep_var);
1215 else
1216 fprintf(fp,"ext_format(ra, this,idx%d, st); // %s\n", idx, rep_var );
1217 }
1218 }
1219
1220 // Seach through operands to determine parameters unique positions.
1221 void InstructForm::set_unique_opnds() {
1222 uint* uniq_idx = NULL;
1223 uint nopnds = num_opnds();
1224 uint num_uniq = nopnds;
1225 uint i;
1226 if ( nopnds > 0 ) {
1227 // Allocate index array with reserve.
1228 uniq_idx = (uint*) malloc(sizeof(uint)*(nopnds + 2));
1229 for( i = 0; i < nopnds+2; i++ ) {
1230 uniq_idx[i] = i;
1231 }
1232 }
1233 // Do it only if there is a match rule and no expand rule. With an
1234 // expand rule it is done by creating new mach node in Expand()
1235 // method.
1236 if ( nopnds > 0 && _matrule != NULL && _exprule == NULL ) {
1237 const char *name;
1238 uint count;
1239 bool has_dupl_use = false;
1240
1241 _parameters.reset();
1242 while( (name = _parameters.iter()) != NULL ) {
1243 count = 0;
1244 uint position = 0;
1245 uint uniq_position = 0;
1246 _components.reset();
1247 Component *comp = NULL;
1248 if( sets_result() ) {
1249 comp = _components.iter();
1250 position++;
1251 }
1252 // The next code is copied from the method operand_position().
1253 for (; (comp = _components.iter()) != NULL; ++position) {
1254 // When the first component is not a DEF,
1255 // leave space for the result operand!
1256 if ( position==0 && (! comp->isa(Component::DEF)) ) {
1257 ++position;
1258 }
1259 if( strcmp(name, comp->_name)==0 ) {
1260 if( ++count > 1 ) {
1261 uniq_idx[position] = uniq_position;
1262 has_dupl_use = true;
1263 } else {
1264 uniq_position = position;
1265 }
1266 }
1267 if( comp->isa(Component::DEF)
1268 && comp->isa(Component::USE) ) {
1269 ++position;
1270 if( position != 1 )
1271 --position; // only use two slots for the 1st USE_DEF
1272 }
1273 }
1274 }
1275 if( has_dupl_use ) {
1276 for( i = 1; i < nopnds; i++ )
1277 if( i != uniq_idx[i] )
1278 break;
1279 int j = i;
1280 for( ; i < nopnds; i++ )
1281 if( i == uniq_idx[i] )
1282 uniq_idx[i] = j++;
1283 num_uniq = j;
1284 }
1285 }
1286 _uniq_idx = uniq_idx;
1287 _num_uniq = num_uniq;
1288 }
1289
1290 // Generate index values needed for determing the operand position
1291 void InstructForm::index_temps(FILE *fp, FormDict &globals, const char *prefix, const char *receiver) {
1292 uint idx = 0; // position of operand in match rule
1293 int cur_num_opnds = num_opnds();
1294
1295 // Compute the index into vector of operand pointers:
1296 // idx0=0 is used to indicate that info comes from this same node, not from input edge.
1297 // idx1 starts at oper_input_base()
1298 if ( cur_num_opnds >= 1 ) {
1299 fprintf(fp," // Start at oper_input_base() and count operands\n");
1300 fprintf(fp," unsigned %sidx0 = %d;\n", prefix, oper_input_base(globals));
1301 fprintf(fp," unsigned %sidx1 = %d;\n", prefix, oper_input_base(globals));
1302
1303 // Generate starting points for other unique operands if they exist
1304 for ( idx = 2; idx < num_unique_opnds(); ++idx ) {
1305 if( *receiver == 0 ) {
1306 fprintf(fp," unsigned %sidx%d = %sidx%d + opnd_array(%d)->num_edges();\n",
1307 prefix, idx, prefix, idx-1, idx-1 );
1308 } else {
1309 fprintf(fp," unsigned %sidx%d = %sidx%d + %s_opnds[%d]->num_edges();\n",
1310 prefix, idx, prefix, idx-1, receiver, idx-1 );
1311 }
1312 }
1313 }
1314 if( *receiver != 0 ) {
1315 // This value is used by generate_peepreplace when copying a node.
1316 // Don't emit it in other cases since it can hide bugs with the
1317 // use invalid idx's.
1318 fprintf(fp," unsigned %sidx%d = %sreq(); \n", prefix, idx, receiver);
1319 }
1320
1321 }
1322
1323 // ---------------------------
1324 bool InstructForm::verify() {
1325 // !!!!! !!!!!
1326 // Check that a "label" operand occurs last in the operand list, if present
1327 return true;
1328 }
1329
1330 void InstructForm::dump() {
1331 output(stderr);
1332 }
1333
1334 void InstructForm::output(FILE *fp) {
1335 fprintf(fp,"\nInstruction: %s\n", (_ident?_ident:""));
1336 if (_matrule) _matrule->output(fp);
1337 if (_insencode) _insencode->output(fp);
1338 if (_opcode) _opcode->output(fp);
1339 if (_attribs) _attribs->output(fp);
1340 if (_predicate) _predicate->output(fp);
1341 if (_effects.Size()) {
1342 fprintf(fp,"Effects\n");
1343 _effects.dump();
1344 }
1345 if (_exprule) _exprule->output(fp);
1346 if (_rewrule) _rewrule->output(fp);
1347 if (_format) _format->output(fp);
1348 if (_peephole) _peephole->output(fp);
1349 }
1350
1351 void MachNodeForm::dump() {
1352 output(stderr);
1353 }
1354
1355 void MachNodeForm::output(FILE *fp) {
1356 fprintf(fp,"\nMachNode: %s\n", (_ident?_ident:""));
1357 }
1358
1359 //------------------------------build_predicate--------------------------------
1360 // Build instruction predicates. If the user uses the same operand name
1361 // twice, we need to check that the operands are pointer-eequivalent in
1362 // the DFA during the labeling process.
1363 Predicate *InstructForm::build_predicate() {
1364 char buf[1024], *s=buf;
1365 Dict names(cmpstr,hashstr,Form::arena); // Map Names to counts
1366
1367 MatchNode *mnode =
1368 strcmp(_matrule->_opType, "Set") ? _matrule : _matrule->_rChild;
1369 mnode->count_instr_names(names);
1370
1371 uint first = 1;
1372 // Start with the predicate supplied in the .ad file.
1373 if( _predicate ) {
1374 if( first ) first=0;
1375 strcpy(s,"("); s += strlen(s);
1376 strcpy(s,_predicate->_pred);
1377 s += strlen(s);
1378 strcpy(s,")"); s += strlen(s);
1379 }
1380 for( DictI i(&names); i.test(); ++i ) {
1381 uintptr_t cnt = (uintptr_t)i._value;
1382 if( cnt > 1 ) { // Need a predicate at all?
1383 assert( cnt == 2, "Unimplemented" );
1384 // Handle many pairs
1385 if( first ) first=0;
1386 else { // All tests must pass, so use '&&'
1387 strcpy(s," && ");
1388 s += strlen(s);
1389 }
1390 // Add predicate to working buffer
1391 sprintf(s,"/*%s*/(",(char*)i._key);
1392 s += strlen(s);
1393 mnode->build_instr_pred(s,(char*)i._key,0);
1394 s += strlen(s);
1395 strcpy(s," == "); s += strlen(s);
1396 mnode->build_instr_pred(s,(char*)i._key,1);
1397 s += strlen(s);
1398 strcpy(s,")"); s += strlen(s);
1399 }
1400 }
1401 if( s == buf ) s = NULL;
1402 else {
1403 assert( strlen(buf) < sizeof(buf), "String buffer overflow" );
1404 s = strdup(buf);
1405 }
1406 return new Predicate(s);
1407 }
1408
1409 //------------------------------EncodeForm-------------------------------------
1410 // Constructor
1411 EncodeForm::EncodeForm()
1412 : _encClass(cmpstr,hashstr, Form::arena) {
1413 }
1414 EncodeForm::~EncodeForm() {
1415 }
1416
1417 // record a new register class
1418 EncClass *EncodeForm::add_EncClass(const char *className) {
1419 EncClass *encClass = new EncClass(className);
1420 _eclasses.addName(className);
1421 _encClass.Insert(className,encClass);
1422 return encClass;
1423 }
1424
1425 // Lookup the function body for an encoding class
1426 EncClass *EncodeForm::encClass(const char *className) {
1427 assert( className != NULL, "Must provide a defined encoding name");
1428
1429 EncClass *encClass = (EncClass*)_encClass[className];
1430 return encClass;
1431 }
1432
1433 // Lookup the function body for an encoding class
1434 const char *EncodeForm::encClassBody(const char *className) {
1435 if( className == NULL ) return NULL;
1436
1437 EncClass *encClass = (EncClass*)_encClass[className];
1438 assert( encClass != NULL, "Encode Class is missing.");
1439 encClass->_code.reset();
1440 const char *code = (const char*)encClass->_code.iter();
1441 assert( code != NULL, "Found an empty encode class body.");
1442
1443 return code;
1444 }
1445
1446 // Lookup the function body for an encoding class
1447 const char *EncodeForm::encClassPrototype(const char *className) {
1448 assert( className != NULL, "Encode class name must be non NULL.");
1449
1450 return className;
1451 }
1452
1453 void EncodeForm::dump() { // Debug printer
1454 output(stderr);
1455 }
1456
1457 void EncodeForm::output(FILE *fp) { // Write info to output files
1458 const char *name;
1459 fprintf(fp,"\n");
1460 fprintf(fp,"-------------------- Dump EncodeForm --------------------\n");
1461 for (_eclasses.reset(); (name = _eclasses.iter()) != NULL;) {
1462 ((EncClass*)_encClass[name])->output(fp);
1463 }
1464 fprintf(fp,"-------------------- end EncodeForm --------------------\n");
1465 }
1466 //------------------------------EncClass---------------------------------------
1467 EncClass::EncClass(const char *name)
1468 : _localNames(cmpstr,hashstr, Form::arena), _name(name) {
1469 }
1470 EncClass::~EncClass() {
1471 }
1472
1473 // Add a parameter <type,name> pair
1474 void EncClass::add_parameter(const char *parameter_type, const char *parameter_name) {
1475 _parameter_type.addName( parameter_type );
1476 _parameter_name.addName( parameter_name );
1477 }
1478
1479 // Verify operand types in parameter list
1480 bool EncClass::check_parameter_types(FormDict &globals) {
1481 // !!!!!
1482 return false;
1483 }
1484
1485 // Add the decomposed "code" sections of an encoding's code-block
1486 void EncClass::add_code(const char *code) {
1487 _code.addName(code);
1488 }
1489
1490 // Add the decomposed "replacement variables" of an encoding's code-block
1491 void EncClass::add_rep_var(char *replacement_var) {
1492 _code.addName(NameList::_signal);
1493 _rep_vars.addName(replacement_var);
1494 }
1495
1496 // Lookup the function body for an encoding class
1497 int EncClass::rep_var_index(const char *rep_var) {
1498 uint position = 0;
1499 const char *name = NULL;
1500
1501 _parameter_name.reset();
1502 while ( (name = _parameter_name.iter()) != NULL ) {
1503 if ( strcmp(rep_var,name) == 0 ) return position;
1504 ++position;
1505 }
1506
1507 return -1;
1508 }
1509
1510 // Check after parsing
1511 bool EncClass::verify() {
1512 // 1!!!!
1513 // Check that each replacement variable, '$name' in architecture description
1514 // is actually a local variable for this encode class, or a reserved name
1515 // "primary, secondary, tertiary"
1516 return true;
1517 }
1518
1519 void EncClass::dump() {
1520 output(stderr);
1521 }
1522
1523 // Write info to output files
1524 void EncClass::output(FILE *fp) {
1525 fprintf(fp,"EncClass: %s", (_name ? _name : ""));
1526
1527 // Output the parameter list
1528 _parameter_type.reset();
1529 _parameter_name.reset();
1530 const char *type = _parameter_type.iter();
1531 const char *name = _parameter_name.iter();
1532 fprintf(fp, " ( ");
1533 for ( ; (type != NULL) && (name != NULL);
1534 (type = _parameter_type.iter()), (name = _parameter_name.iter()) ) {
1535 fprintf(fp, " %s %s,", type, name);
1536 }
1537 fprintf(fp, " ) ");
1538
1539 // Output the code block
1540 _code.reset();
1541 _rep_vars.reset();
1542 const char *code;
1543 while ( (code = _code.iter()) != NULL ) {
1544 if ( _code.is_signal(code) ) {
1545 // A replacement variable
1546 const char *rep_var = _rep_vars.iter();
1547 fprintf(fp,"($%s)", rep_var);
1548 } else {
1549 // A section of code
1550 fprintf(fp,"%s", code);
1551 }
1552 }
1553
1554 }
1555
1556 //------------------------------Opcode-----------------------------------------
1557 Opcode::Opcode(char *primary, char *secondary, char *tertiary)
1558 : _primary(primary), _secondary(secondary), _tertiary(tertiary) {
1559 }
1560
1561 Opcode::~Opcode() {
1562 }
1563
1564 Opcode::opcode_type Opcode::as_opcode_type(const char *param) {
1565 if( strcmp(param,"primary") == 0 ) {
1566 return Opcode::PRIMARY;
1567 }
1568 else if( strcmp(param,"secondary") == 0 ) {
1569 return Opcode::SECONDARY;
1570 }
1571 else if( strcmp(param,"tertiary") == 0 ) {
1572 return Opcode::TERTIARY;
1573 }
1574 return Opcode::NOT_AN_OPCODE;
1575 }
1576
1577 void Opcode::print_opcode(FILE *fp, Opcode::opcode_type desired_opcode) {
1578 // Default values previously provided by MachNode::primary()...
1579 const char *description = "default_opcode()";
1580 const char *value = "-1";
1581 // Check if user provided any opcode definitions
1582 if( this != NULL ) {
1583 // Update 'value' if user provided a definition in the instruction
1584 switch (desired_opcode) {
1585 case PRIMARY:
1586 description = "primary()";
1587 if( _primary != NULL) { value = _primary; }
1588 break;
1589 case SECONDARY:
1590 description = "secondary()";
1591 if( _secondary != NULL ) { value = _secondary; }
1592 break;
1593 case TERTIARY:
1594 description = "tertiary()";
1595 if( _tertiary != NULL ) { value = _tertiary; }
1596 break;
1597 default:
1598 assert( false, "ShouldNotReachHere();");
1599 break;
1600 }
1601 }
1602 fprintf(fp, "(%s /*%s*/)", value, description);
1603 }
1604
1605 void Opcode::dump() {
1606 output(stderr);
1607 }
1608
1609 // Write info to output files
1610 void Opcode::output(FILE *fp) {
1611 if (_primary != NULL) fprintf(fp,"Primary opcode: %s\n", _primary);
1612 if (_secondary != NULL) fprintf(fp,"Secondary opcode: %s\n", _secondary);
1613 if (_tertiary != NULL) fprintf(fp,"Tertiary opcode: %s\n", _tertiary);
1614 }
1615
1616 //------------------------------InsEncode--------------------------------------
1617 InsEncode::InsEncode() {
1618 }
1619 InsEncode::~InsEncode() {
1620 }
1621
1622 // Add "encode class name" and its parameters
1623 NameAndList *InsEncode::add_encode(char *encoding) {
1624 assert( encoding != NULL, "Must provide name for encoding");
1625
1626 // add_parameter(NameList::_signal);
1627 NameAndList *encode = new NameAndList(encoding);
1628 _encoding.addName((char*)encode);
1629
1630 return encode;
1631 }
1632
1633 // Access the list of encodings
1634 void InsEncode::reset() {
1635 _encoding.reset();
1636 // _parameter.reset();
1637 }
1638 const char* InsEncode::encode_class_iter() {
1639 NameAndList *encode_class = (NameAndList*)_encoding.iter();
1640 return ( encode_class != NULL ? encode_class->name() : NULL );
1641 }
1642 // Obtain parameter name from zero based index
1643 const char *InsEncode::rep_var_name(InstructForm &inst, uint param_no) {
1644 NameAndList *params = (NameAndList*)_encoding.current();
1645 assert( params != NULL, "Internal Error");
1646 const char *param = (*params)[param_no];
1647
1648 // Remove '$' if parser placed it there.
1649 return ( param != NULL && *param == '$') ? (param+1) : param;
1650 }
1651
1652 void InsEncode::dump() {
1653 output(stderr);
1654 }
1655
1656 // Write info to output files
1657 void InsEncode::output(FILE *fp) {
1658 NameAndList *encoding = NULL;
1659 const char *parameter = NULL;
1660
1661 fprintf(fp,"InsEncode: ");
1662 _encoding.reset();
1663
1664 while ( (encoding = (NameAndList*)_encoding.iter()) != 0 ) {
1665 // Output the encoding being used
1666 fprintf(fp,"%s(", encoding->name() );
1667
1668 // Output its parameter list, if any
1669 bool first_param = true;
1670 encoding->reset();
1671 while ( (parameter = encoding->iter()) != 0 ) {
1672 // Output the ',' between parameters
1673 if ( ! first_param ) fprintf(fp,", ");
1674 first_param = false;
1675 // Output the parameter
1676 fprintf(fp,"%s", parameter);
1677 } // done with parameters
1678 fprintf(fp,") ");
1679 } // done with encodings
1680
1681 fprintf(fp,"\n");
1682 }
1683
1684 //------------------------------Effect-----------------------------------------
1685 static int effect_lookup(const char *name) {
1686 if(!strcmp(name, "USE")) return Component::USE;
1687 if(!strcmp(name, "DEF")) return Component::DEF;
1688 if(!strcmp(name, "USE_DEF")) return Component::USE_DEF;
1689 if(!strcmp(name, "KILL")) return Component::KILL;
1690 if(!strcmp(name, "USE_KILL")) return Component::USE_KILL;
1691 if(!strcmp(name, "TEMP")) return Component::TEMP;
1692 if(!strcmp(name, "INVALID")) return Component::INVALID;
1693 assert( false,"Invalid effect name specified\n");
1694 return Component::INVALID;
1695 }
1696
1697 Effect::Effect(const char *name) : _name(name), _use_def(effect_lookup(name)) {
1698 _ftype = Form::EFF;
1699 }
1700 Effect::~Effect() {
1701 }
1702
1703 // Dynamic type check
1704 Effect *Effect::is_effect() const {
1705 return (Effect*)this;
1706 }
1707
1708
1709 // True if this component is equal to the parameter.
1710 bool Effect::is(int use_def_kill_enum) const {
1711 return (_use_def == use_def_kill_enum ? true : false);
1712 }
1713 // True if this component is used/def'd/kill'd as the parameter suggests.
1714 bool Effect::isa(int use_def_kill_enum) const {
1715 return (_use_def & use_def_kill_enum) == use_def_kill_enum;
1716 }
1717
1718 void Effect::dump() {
1719 output(stderr);
1720 }
1721
1722 void Effect::output(FILE *fp) { // Write info to output files
1723 fprintf(fp,"Effect: %s\n", (_name?_name:""));
1724 }
1725
1726 //------------------------------ExpandRule-------------------------------------
1727 ExpandRule::ExpandRule() : _expand_instrs(),
1728 _newopconst(cmpstr, hashstr, Form::arena) {
1729 _ftype = Form::EXP;
1730 }
1731
1732 ExpandRule::~ExpandRule() { // Destructor
1733 }
1734
1735 void ExpandRule::add_instruction(NameAndList *instruction_name_and_operand_list) {
1736 _expand_instrs.addName((char*)instruction_name_and_operand_list);
1737 }
1738
1739 void ExpandRule::reset_instructions() {
1740 _expand_instrs.reset();
1741 }
1742
1743 NameAndList* ExpandRule::iter_instructions() {
1744 return (NameAndList*)_expand_instrs.iter();
1745 }
1746
1747
1748 void ExpandRule::dump() {
1749 output(stderr);
1750 }
1751
1752 void ExpandRule::output(FILE *fp) { // Write info to output files
1753 NameAndList *expand_instr = NULL;
1754 const char *opid = NULL;
1755
1756 fprintf(fp,"\nExpand Rule:\n");
1757
1758 // Iterate over the instructions 'node' expands into
1759 for(reset_instructions(); (expand_instr = iter_instructions()) != NULL; ) {
1760 fprintf(fp,"%s(", expand_instr->name());
1761
1762 // iterate over the operand list
1763 for( expand_instr->reset(); (opid = expand_instr->iter()) != NULL; ) {
1764 fprintf(fp,"%s ", opid);
1765 }
1766 fprintf(fp,");\n");
1767 }
1768 }
1769
1770 //------------------------------RewriteRule------------------------------------
1771 RewriteRule::RewriteRule(char* params, char* block)
1772 : _tempParams(params), _tempBlock(block) { }; // Constructor
1773 RewriteRule::~RewriteRule() { // Destructor
1774 }
1775
1776 void RewriteRule::dump() {
1777 output(stderr);
1778 }
1779
1780 void RewriteRule::output(FILE *fp) { // Write info to output files
1781 fprintf(fp,"\nRewrite Rule:\n%s\n%s\n",
1782 (_tempParams?_tempParams:""),
1783 (_tempBlock?_tempBlock:""));
1784 }
1785
1786
1787 //==============================MachNodes======================================
1788 //------------------------------MachNodeForm-----------------------------------
1789 MachNodeForm::MachNodeForm(char *id)
1790 : _ident(id) {
1791 }
1792
1793 MachNodeForm::~MachNodeForm() {
1794 }
1795
1796 MachNodeForm *MachNodeForm::is_machnode() const {
1797 return (MachNodeForm*)this;
1798 }
1799
1800 //==============================Operand Classes================================
1801 //------------------------------OpClassForm------------------------------------
1802 OpClassForm::OpClassForm(const char* id) : _ident(id) {
1803 _ftype = Form::OPCLASS;
1804 }
1805
1806 OpClassForm::~OpClassForm() {
1807 }
1808
1809 bool OpClassForm::ideal_only() const { return 0; }
1810
1811 OpClassForm *OpClassForm::is_opclass() const {
1812 return (OpClassForm*)this;
1813 }
1814
1815 Form::InterfaceType OpClassForm::interface_type(FormDict &globals) const {
1816 if( _oplst.count() == 0 ) return Form::no_interface;
1817
1818 // Check that my operands have the same interface type
1819 Form::InterfaceType interface;
1820 bool first = true;
1821 NameList &op_list = (NameList &)_oplst;
1822 op_list.reset();
1823 const char *op_name;
1824 while( (op_name = op_list.iter()) != NULL ) {
1825 const Form *form = globals[op_name];
1826 OperandForm *operand = form->is_operand();
1827 assert( operand, "Entry in operand class that is not an operand");
1828 if( first ) {
1829 first = false;
1830 interface = operand->interface_type(globals);
1831 } else {
1832 interface = (interface == operand->interface_type(globals) ? interface : Form::no_interface);
1833 }
1834 }
1835 return interface;
1836 }
1837
1838 bool OpClassForm::stack_slots_only(FormDict &globals) const {
1839 if( _oplst.count() == 0 ) return false; // how?
1840
1841 NameList &op_list = (NameList &)_oplst;
1842 op_list.reset();
1843 const char *op_name;
1844 while( (op_name = op_list.iter()) != NULL ) {
1845 const Form *form = globals[op_name];
1846 OperandForm *operand = form->is_operand();
1847 assert( operand, "Entry in operand class that is not an operand");
1848 if( !operand->stack_slots_only(globals) ) return false;
1849 }
1850 return true;
1851 }
1852
1853
1854 void OpClassForm::dump() {
1855 output(stderr);
1856 }
1857
1858 void OpClassForm::output(FILE *fp) {
1859 const char *name;
1860 fprintf(fp,"\nOperand Class: %s\n", (_ident?_ident:""));
1861 fprintf(fp,"\nCount = %d\n", _oplst.count());
1862 for(_oplst.reset(); (name = _oplst.iter()) != NULL;) {
1863 fprintf(fp,"%s, ",name);
1864 }
1865 fprintf(fp,"\n");
1866 }
1867
1868
1869 //==============================Operands=======================================
1870 //------------------------------OperandForm------------------------------------
1871 OperandForm::OperandForm(const char* id)
1872 : OpClassForm(id), _ideal_only(false),
1873 _localNames(cmpstr, hashstr, Form::arena) {
1874 _ftype = Form::OPER;
1875
1876 _matrule = NULL;
1877 _interface = NULL;
1878 _attribs = NULL;
1879 _predicate = NULL;
1880 _constraint= NULL;
1881 _construct = NULL;
1882 _format = NULL;
1883 }
1884 OperandForm::OperandForm(const char* id, bool ideal_only)
1885 : OpClassForm(id), _ideal_only(ideal_only),
1886 _localNames(cmpstr, hashstr, Form::arena) {
1887 _ftype = Form::OPER;
1888
1889 _matrule = NULL;
1890 _interface = NULL;
1891 _attribs = NULL;
1892 _predicate = NULL;
1893 _constraint= NULL;
1894 _construct = NULL;
1895 _format = NULL;
1896 }
1897 OperandForm::~OperandForm() {
1898 }
1899
1900
1901 OperandForm *OperandForm::is_operand() const {
1902 return (OperandForm*)this;
1903 }
1904
1905 bool OperandForm::ideal_only() const {
1906 return _ideal_only;
1907 }
1908
1909 Form::InterfaceType OperandForm::interface_type(FormDict &globals) const {
1910 if( _interface == NULL ) return Form::no_interface;
1911
1912 return _interface->interface_type(globals);
1913 }
1914
1915
1916 bool OperandForm::stack_slots_only(FormDict &globals) const {
1917 if( _constraint == NULL ) return false;
1918 return _constraint->stack_slots_only();
1919 }
1920
1921
1922 // Access op_cost attribute or return NULL.
1923 const char* OperandForm::cost() {
1924 for (Attribute* cur = _attribs; cur != NULL; cur = (Attribute*)cur->_next) {
1925 if( strcmp(cur->_ident,AttributeForm::_op_cost) == 0 ) {
1926 return cur->_val;
1927 }
1928 }
1929 return NULL;
1930 }
1931
1932 // Return the number of leaves below this complex operand
1933 uint OperandForm::num_leaves() const {
1934 if ( ! _matrule) return 0;
1935
1936 int num_leaves = _matrule->_numleaves;
1937 return num_leaves;
1938 }
1939
1940 // Return the number of constants contained within this complex operand
1941 uint OperandForm::num_consts(FormDict &globals) const {
1942 if ( ! _matrule) return 0;
1943
1944 // This is a recursive invocation on all operands in the matchrule
1945 return _matrule->num_consts(globals);
1946 }
1947
1948 // Return the number of constants in match rule with specified type
1949 uint OperandForm::num_consts(FormDict &globals, Form::DataType type) const {
1950 if ( ! _matrule) return 0;
1951
1952 // This is a recursive invocation on all operands in the matchrule
1953 return _matrule->num_consts(globals, type);
1954 }
1955
1956 // Return the number of pointer constants contained within this complex operand
1957 uint OperandForm::num_const_ptrs(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_const_ptrs(globals);
1962 }
1963
1964 uint OperandForm::num_edges(FormDict &globals) const {
1965 uint edges = 0;
1966 uint leaves = num_leaves();
1967 uint consts = num_consts(globals);
1968
1969 // If we are matching a constant directly, there are no leaves.
1970 edges = ( leaves > consts ) ? leaves - consts : 0;
1971
1972 // !!!!!
1973 // Special case operands that do not have a corresponding ideal node.
1974 if( (edges == 0) && (consts == 0) ) {
1975 if( constrained_reg_class() != NULL ) {
1976 edges = 1;
1977 } else {
1978 if( _matrule
1979 && (_matrule->_lChild == NULL) && (_matrule->_rChild == NULL) ) {
1980 const Form *form = globals[_matrule->_opType];
1981 OperandForm *oper = form ? form->is_operand() : NULL;
1982 if( oper ) {
1983 return oper->num_edges(globals);
1984 }
1985 }
1986 }
1987 }
1988
1989 return edges;
1990 }
1991
1992
1993 // Check if this operand is usable for cisc-spilling
1994 bool OperandForm::is_cisc_reg(FormDict &globals) const {
1995 const char *ideal = ideal_type(globals);
1996 bool is_cisc_reg = (ideal && (ideal_to_Reg_type(ideal) != none));
1997 return is_cisc_reg;
1998 }
1999
2000 bool OpClassForm::is_cisc_mem(FormDict &globals) const {
2001 Form::InterfaceType my_interface = interface_type(globals);
2002 return (my_interface == memory_interface);
2003 }
2004
2005
2006 // node matches ideal 'Bool'
2007 bool OperandForm::is_ideal_bool() const {
2008 if( _matrule == NULL ) return false;
2009
2010 return _matrule->is_ideal_bool();
2011 }
2012
2013 // Require user's name for an sRegX to be stackSlotX
2014 Form::DataType OperandForm::is_user_name_for_sReg() const {
2015 DataType data_type = none;
2016 if( _ident != NULL ) {
2017 if( strcmp(_ident,"stackSlotI") == 0 ) data_type = Form::idealI;
2018 else if( strcmp(_ident,"stackSlotP") == 0 ) data_type = Form::idealP;
2019 else if( strcmp(_ident,"stackSlotD") == 0 ) data_type = Form::idealD;
2020 else if( strcmp(_ident,"stackSlotF") == 0 ) data_type = Form::idealF;
2021 else if( strcmp(_ident,"stackSlotL") == 0 ) data_type = Form::idealL;
2022 }
2023 assert((data_type == none) || (_matrule == NULL), "No match-rule for stackSlotX");
2024
2025 return data_type;
2026 }
2027
2028
2029 // Return ideal type, if there is a single ideal type for this operand
2030 const char *OperandForm::ideal_type(FormDict &globals, RegisterForm *registers) const {
2031 const char *type = NULL;
2032 if (ideal_only()) type = _ident;
2033 else if( _matrule == NULL ) {
2034 // Check for condition code register
2035 const char *rc_name = constrained_reg_class();
2036 // !!!!!
2037 if (rc_name == NULL) return NULL;
2038 // !!!!! !!!!!
2039 // Check constraints on result's register class
2040 if( registers ) {
2041 RegClass *reg_class = registers->getRegClass(rc_name);
2042 assert( reg_class != NULL, "Register class is not defined");
2043
2044 // Check for ideal type of entries in register class, all are the same type
2045 reg_class->reset();
2046 RegDef *reg_def = reg_class->RegDef_iter();
2047 assert( reg_def != NULL, "No entries in register class");
2048 assert( reg_def->_idealtype != NULL, "Did not define ideal type for register");
2049 // Return substring that names the register's ideal type
2050 type = reg_def->_idealtype + 3;
2051 assert( *(reg_def->_idealtype + 0) == 'O', "Expect Op_ prefix");
2052 assert( *(reg_def->_idealtype + 1) == 'p', "Expect Op_ prefix");
2053 assert( *(reg_def->_idealtype + 2) == '_', "Expect Op_ prefix");
2054 }
2055 }
2056 else if( _matrule->_lChild == NULL && _matrule->_rChild == NULL ) {
2057 // This operand matches a single type, at the top level.
2058 // Check for ideal type
2059 type = _matrule->_opType;
2060 if( strcmp(type,"Bool") == 0 )
2061 return "Bool";
2062 // transitive lookup
2063 const Form *frm = globals[type];
2064 OperandForm *op = frm->is_operand();
2065 type = op->ideal_type(globals, registers);
2066 }
2067 return type;
2068 }
2069
2070
2071 // If there is a single ideal type for this interface field, return it.
2072 const char *OperandForm::interface_ideal_type(FormDict &globals,
2073 const char *field) const {
2074 const char *ideal_type = NULL;
2075 const char *value = NULL;
2076
2077 // Check if "field" is valid for this operand's interface
2078 if ( ! is_interface_field(field, value) ) return ideal_type;
2079
2080 // !!!!! !!!!! !!!!!
2081 // If a valid field has a constant value, identify "ConI" or "ConP" or ...
2082
2083 // Else, lookup type of field's replacement variable
2084
2085 return ideal_type;
2086 }
2087
2088
2089 RegClass* OperandForm::get_RegClass() const {
2090 if (_interface && !_interface->is_RegInterface()) return NULL;
2091 return globalAD->get_registers()->getRegClass(constrained_reg_class());
2092 }
2093
2094
2095 bool OperandForm::is_bound_register() const {
2096 RegClass *reg_class = get_RegClass();
2097 if (reg_class == NULL) return false;
2098
2099 const char * name = ideal_type(globalAD->globalNames());
2100 if (name == NULL) return false;
2101
2102 int size = 0;
2103 if (strcmp(name,"RegFlags")==0) size = 1;
2104 if (strcmp(name,"RegI")==0) size = 1;
2105 if (strcmp(name,"RegF")==0) size = 1;
2106 if (strcmp(name,"RegD")==0) size = 2;
2107 if (strcmp(name,"RegL")==0) size = 2;
2108 if (strcmp(name,"RegN")==0) size = 1;
2109 if (strcmp(name,"RegP")==0) size = globalAD->get_preproc_def("_LP64") ? 2 : 1;
2110 if (size == 0) return false;
2111 return size == reg_class->size();
2112 }
2113
2114
2115 // Check if this is a valid field for this operand,
2116 // Return 'true' if valid, and set the value to the string the user provided.
2117 bool OperandForm::is_interface_field(const char *field,
2118 const char * &value) const {
2119 return false;
2120 }
2121
2122
2123 // Return register class name if a constraint specifies the register class.
2124 const char *OperandForm::constrained_reg_class() const {
2125 const char *reg_class = NULL;
2126 if ( _constraint ) {
2127 // !!!!!
2128 Constraint *constraint = _constraint;
2129 if ( strcmp(_constraint->_func,"ALLOC_IN_RC") == 0 ) {
2130 reg_class = _constraint->_arg;
2131 }
2132 }
2133
2134 return reg_class;
2135 }
2136
2137
2138 // Return the register class associated with 'leaf'.
2139 const char *OperandForm::in_reg_class(uint leaf, FormDict &globals) {
2140 const char *reg_class = NULL; // "RegMask::Empty";
2141
2142 if((_matrule == NULL) || (_matrule->is_chain_rule(globals))) {
2143 reg_class = constrained_reg_class();
2144 return reg_class;
2145 }
2146 const char *result = NULL;
2147 const char *name = NULL;
2148 const char *type = NULL;
2149 // iterate through all base operands
2150 // until we reach the register that corresponds to "leaf"
2151 // This function is not looking for an ideal type. It needs the first
2152 // level user type associated with the leaf.
2153 for(uint idx = 0;_matrule->base_operand(idx,globals,result,name,type);++idx) {
2154 const Form *form = (_localNames[name] ? _localNames[name] : globals[result]);
2155 OperandForm *oper = form ? form->is_operand() : NULL;
2156 if( oper ) {
2157 reg_class = oper->constrained_reg_class();
2158 if( reg_class ) {
2159 reg_class = reg_class;
2160 } else {
2161 // ShouldNotReachHere();
2162 }
2163 } else {
2164 // ShouldNotReachHere();
2165 }
2166
2167 // Increment our target leaf position if current leaf is not a candidate.
2168 if( reg_class == NULL) ++leaf;
2169 // Exit the loop with the value of reg_class when at the correct index
2170 if( idx == leaf ) break;
2171 // May iterate through all base operands if reg_class for 'leaf' is NULL
2172 }
2173 return reg_class;
2174 }
2175
2176
2177 // Recursive call to construct list of top-level operands.
2178 // Implementation does not modify state of internal structures
2179 void OperandForm::build_components() {
2180 if (_matrule) _matrule->append_components(_localNames, _components);
2181
2182 // Add parameters that "do not appear in match rule".
2183 const char *name;
2184 for (_parameters.reset(); (name = _parameters.iter()) != NULL;) {
2185 OperandForm *opForm = (OperandForm*)_localNames[name];
2186
2187 if ( _components.operand_position(name) == -1 ) {
2188 _components.insert(name, opForm->_ident, Component::INVALID, false);
2189 }
2190 }
2191
2192 return;
2193 }
2194
2195 int OperandForm::operand_position(const char *name, int usedef) {
2196 return _components.operand_position(name, usedef);
2197 }
2198
2199
2200 // Return zero-based position in component list, only counting constants;
2201 // Return -1 if not in list.
2202 int OperandForm::constant_position(FormDict &globals, const Component *last) {
2203 // Iterate through components and count constants preceeding 'constant'
2204 uint position = 0;
2205 Component *comp;
2206 _components.reset();
2207 while( (comp = _components.iter()) != NULL && (comp != last) ) {
2208 // Special case for operands that take a single user-defined operand
2209 // Skip the initial definition in the component list.
2210 if( strcmp(comp->_name,this->_ident) == 0 ) continue;
2211
2212 const char *type = comp->_type;
2213 // Lookup operand form for replacement variable's type
2214 const Form *form = globals[type];
2215 assert( form != NULL, "Component's type not found");
2216 OperandForm *oper = form ? form->is_operand() : NULL;
2217 if( oper ) {
2218 if( oper->_matrule->is_base_constant(globals) != Form::none ) {
2219 ++position;
2220 }
2221 }
2222 }
2223
2224 // Check for being passed a component that was not in the list
2225 if( comp != last ) position = -1;
2226
2227 return position;
2228 }
2229 // Provide position of constant by "name"
2230 int OperandForm::constant_position(FormDict &globals, const char *name) {
2231 const Component *comp = _components.search(name);
2232 int idx = constant_position( globals, comp );
2233
2234 return idx;
2235 }
2236
2237
2238 // Return zero-based position in component list, only counting constants;
2239 // Return -1 if not in list.
2240 int OperandForm::register_position(FormDict &globals, const char *reg_name) {
2241 // Iterate through components and count registers preceeding 'last'
2242 uint position = 0;
2243 Component *comp;
2244 _components.reset();
2245 while( (comp = _components.iter()) != NULL
2246 && (strcmp(comp->_name,reg_name) != 0) ) {
2247 // Special case for operands that take a single user-defined operand
2248 // Skip the initial definition in the component list.
2249 if( strcmp(comp->_name,this->_ident) == 0 ) continue;
2250
2251 const char *type = comp->_type;
2252 // Lookup operand form for component's type
2253 const Form *form = globals[type];
2254 assert( form != NULL, "Component's type not found");
2255 OperandForm *oper = form ? form->is_operand() : NULL;
2256 if( oper ) {
2257 if( oper->_matrule->is_base_register(globals) ) {
2258 ++position;
2259 }
2260 }
2261 }
2262
2263 return position;
2264 }
2265
2266
2267 const char *OperandForm::reduce_result() const {
2268 return _ident;
2269 }
2270 // Return the name of the operand on the right hand side of the binary match
2271 // Return NULL if there is no right hand side
2272 const char *OperandForm::reduce_right(FormDict &globals) const {
2273 return ( _matrule ? _matrule->reduce_right(globals) : NULL );
2274 }
2275
2276 // Similar for left
2277 const char *OperandForm::reduce_left(FormDict &globals) const {
2278 return ( _matrule ? _matrule->reduce_left(globals) : NULL );
2279 }
2280
2281
2282 // --------------------------- FILE *output_routines
2283 //
2284 // Output code for disp_is_oop, if true.
2285 void OperandForm::disp_is_oop(FILE *fp, FormDict &globals) {
2286 // Check it is a memory interface with a non-user-constant disp field
2287 if ( this->_interface == NULL ) return;
2288 MemInterface *mem_interface = this->_interface->is_MemInterface();
2289 if ( mem_interface == NULL ) return;
2290 const char *disp = mem_interface->_disp;
2291 if ( *disp != '$' ) return;
2292
2293 // Lookup replacement variable in operand's component list
2294 const char *rep_var = disp + 1;
2295 const Component *comp = this->_components.search(rep_var);
2296 assert( comp != NULL, "Replacement variable not found in components");
2297 // Lookup operand form for replacement variable's type
2298 const char *type = comp->_type;
2299 Form *form = (Form*)globals[type];
2300 assert( form != NULL, "Replacement variable's type not found");
2301 OperandForm *op = form->is_operand();
2302 assert( op, "Memory Interface 'disp' can only emit an operand form");
2303 // Check if this is a ConP, which may require relocation
2304 if ( op->is_base_constant(globals) == Form::idealP ) {
2305 // Find the constant's index: _c0, _c1, _c2, ... , _cN
2306 uint idx = op->constant_position( globals, rep_var);
2307 fprintf(fp," virtual bool disp_is_oop() const {", _ident);
2308 fprintf(fp, " return _c%d->isa_oop_ptr();", idx);
2309 fprintf(fp, " }\n");
2310 }
2311 }
2312
2313 // Generate code for internal and external format methods
2314 //
2315 // internal access to reg# node->_idx
2316 // access to subsumed constant _c0, _c1,
2317 void OperandForm::int_format(FILE *fp, FormDict &globals, uint index) {
2318 Form::DataType dtype;
2319 if (_matrule && (_matrule->is_base_register(globals) ||
2320 strcmp(ideal_type(globalAD->globalNames()), "RegFlags") == 0)) {
2321 // !!!!! !!!!!
2322 fprintf(fp, "{ char reg_str[128];\n");
2323 fprintf(fp," ra->dump_register(node,reg_str);\n");
2324 fprintf(fp," tty->print(\"%cs\",reg_str);\n",'%');
2325 fprintf(fp," }\n");
2326 } else if (_matrule && (dtype = _matrule->is_base_constant(globals)) != Form::none) {
2327 format_constant( fp, index, dtype );
2328 } else if (ideal_to_sReg_type(_ident) != Form::none) {
2329 // Special format for Stack Slot Register
2330 fprintf(fp, "{ char reg_str[128];\n");
2331 fprintf(fp," ra->dump_register(node,reg_str);\n");
2332 fprintf(fp," tty->print(\"%cs\",reg_str);\n",'%');
2333 fprintf(fp," }\n");
2334 } else {
2335 fprintf(fp,"tty->print(\"No format defined for %s\n\");\n", _ident);
2336 fflush(fp);
2337 fprintf(stderr,"No format defined for %s\n", _ident);
2338 dump();
2339 assert( false,"Internal error:\n output_internal_operand() attempting to output other than a Register or Constant");
2340 }
2341 }
2342
2343 // Similar to "int_format" but for cases where data is external to operand
2344 // external access to reg# node->in(idx)->_idx,
2345 void OperandForm::ext_format(FILE *fp, FormDict &globals, uint index) {
2346 Form::DataType dtype;
2347 if (_matrule && (_matrule->is_base_register(globals) ||
2348 strcmp(ideal_type(globalAD->globalNames()), "RegFlags") == 0)) {
2349 fprintf(fp, "{ char reg_str[128];\n");
2350 fprintf(fp," ra->dump_register(node->in(idx");
2351 if ( index != 0 ) fprintf(fp, "+%d",index);
2352 fprintf(fp, "),reg_str);\n");
2353 fprintf(fp," tty->print(\"%cs\",reg_str);\n",'%');
2354 fprintf(fp," }\n");
2355 } else if (_matrule && (dtype = _matrule->is_base_constant(globals)) != Form::none) {
2356 format_constant( fp, index, dtype );
2357 } else if (ideal_to_sReg_type(_ident) != Form::none) {
2358 // Special format for Stack Slot Register
2359 fprintf(fp, "{ char reg_str[128];\n");
2360 fprintf(fp," ra->dump_register(node->in(idx");
2361 if ( index != 0 ) fprintf(fp, "+%d",index);
2362 fprintf(fp, "),reg_str);\n");
2363 fprintf(fp," tty->print(\"%cs\",reg_str);\n",'%');
2364 fprintf(fp," }\n");
2365 } else {
2366 fprintf(fp,"tty->print(\"No format defined for %s\n\");\n", _ident);
2367 assert( false,"Internal error:\n output_external_operand() attempting to output other than a Register or Constant");
2368 }
2369 }
2370
2371 void OperandForm::format_constant(FILE *fp, uint const_index, uint const_type) {
2372 switch(const_type) {
2373 case Form::idealI: fprintf(fp,"st->print(\"#%%d\", _c%d);\n", const_index); break;
2374 case Form::idealP: fprintf(fp,"_c%d->dump_on(st);\n", const_index); break;
2375 case Form::idealN: fprintf(fp,"_c%d->dump_on(st);\n", const_index); break;
2376 case Form::idealL: fprintf(fp,"st->print(\"#%%lld\", _c%d);\n", const_index); break;
2377 case Form::idealF: fprintf(fp,"st->print(\"#%%f\", _c%d);\n", const_index); break;
2378 case Form::idealD: fprintf(fp,"st->print(\"#%%f\", _c%d);\n", const_index); break;
2379 default:
2380 assert( false, "ShouldNotReachHere()");
2381 }
2382 }
2383
2384 // Return the operand form corresponding to the given index, else NULL.
2385 OperandForm *OperandForm::constant_operand(FormDict &globals,
2386 uint index) {
2387 // !!!!!
2388 // Check behavior on complex operands
2389 uint n_consts = num_consts(globals);
2390 if( n_consts > 0 ) {
2391 uint i = 0;
2392 const char *type;
2393 Component *comp;
2394 _components.reset();
2395 if ((comp = _components.iter()) == NULL) {
2396 assert(n_consts == 1, "Bad component list detected.\n");
2397 // Current operand is THE operand
2398 if ( index == 0 ) {
2399 return this;
2400 }
2401 } // end if NULL
2402 else {
2403 // Skip the first component, it can not be a DEF of a constant
2404 do {
2405 type = comp->base_type(globals);
2406 // Check that "type" is a 'ConI', 'ConP', ...
2407 if ( ideal_to_const_type(type) != Form::none ) {
2408 // When at correct component, get corresponding Operand
2409 if ( index == 0 ) {
2410 return globals[comp->_type]->is_operand();
2411 }
2412 // Decrement number of constants to go
2413 --index;
2414 }
2415 } while((comp = _components.iter()) != NULL);
2416 }
2417 }
2418
2419 // Did not find a constant for this index.
2420 return NULL;
2421 }
2422
2423 // If this operand has a single ideal type, return its type
2424 Form::DataType OperandForm::simple_type(FormDict &globals) const {
2425 const char *type_name = ideal_type(globals);
2426 Form::DataType type = type_name ? ideal_to_const_type( type_name )
2427 : Form::none;
2428 return type;
2429 }
2430
2431 Form::DataType OperandForm::is_base_constant(FormDict &globals) const {
2432 if ( _matrule == NULL ) return Form::none;
2433
2434 return _matrule->is_base_constant(globals);
2435 }
2436
2437 // "true" if this operand is a simple type that is swallowed
2438 bool OperandForm::swallowed(FormDict &globals) const {
2439 Form::DataType type = simple_type(globals);
2440 if( type != Form::none ) {
2441 return true;
2442 }
2443
2444 return false;
2445 }
2446
2447 // Output code to access the value of the index'th constant
2448 void OperandForm::access_constant(FILE *fp, FormDict &globals,
2449 uint const_index) {
2450 OperandForm *oper = constant_operand(globals, const_index);
2451 assert( oper, "Index exceeds number of constants in operand");
2452 Form::DataType dtype = oper->is_base_constant(globals);
2453
2454 switch(dtype) {
2455 case idealI: fprintf(fp,"_c%d", const_index); break;
2456 case idealP: fprintf(fp,"_c%d->get_con()",const_index); break;
2457 case idealL: fprintf(fp,"_c%d", const_index); break;
2458 case idealF: fprintf(fp,"_c%d", const_index); break;
2459 case idealD: fprintf(fp,"_c%d", const_index); break;
2460 default:
2461 assert( false, "ShouldNotReachHere()");
2462 }
2463 }
2464
2465
2466 void OperandForm::dump() {
2467 output(stderr);
2468 }
2469
2470 void OperandForm::output(FILE *fp) {
2471 fprintf(fp,"\nOperand: %s\n", (_ident?_ident:""));
2472 if (_matrule) _matrule->dump();
2473 if (_interface) _interface->dump();
2474 if (_attribs) _attribs->dump();
2475 if (_predicate) _predicate->dump();
2476 if (_constraint) _constraint->dump();
2477 if (_construct) _construct->dump();
2478 if (_format) _format->dump();
2479 }
2480
2481 //------------------------------Constraint-------------------------------------
2482 Constraint::Constraint(const char *func, const char *arg)
2483 : _func(func), _arg(arg) {
2484 }
2485 Constraint::~Constraint() { /* not owner of char* */
2486 }
2487
2488 bool Constraint::stack_slots_only() const {
2489 return strcmp(_func, "ALLOC_IN_RC") == 0
2490 && strcmp(_arg, "stack_slots") == 0;
2491 }
2492
2493 void Constraint::dump() {
2494 output(stderr);
2495 }
2496
2497 void Constraint::output(FILE *fp) { // Write info to output files
2498 assert((_func != NULL && _arg != NULL),"missing constraint function or arg");
2499 fprintf(fp,"Constraint: %s ( %s )\n", _func, _arg);
2500 }
2501
2502 //------------------------------Predicate--------------------------------------
2503 Predicate::Predicate(char *pr)
2504 : _pred(pr) {
2505 }
2506 Predicate::~Predicate() {
2507 }
2508
2509 void Predicate::dump() {
2510 output(stderr);
2511 }
2512
2513 void Predicate::output(FILE *fp) {
2514 fprintf(fp,"Predicate"); // Write to output files
2515 }
2516 //------------------------------Interface--------------------------------------
2517 Interface::Interface(const char *name) : _name(name) {
2518 }
2519 Interface::~Interface() {
2520 }
2521
2522 Form::InterfaceType Interface::interface_type(FormDict &globals) const {
2523 Interface *thsi = (Interface*)this;
2524 if ( thsi->is_RegInterface() ) return Form::register_interface;
2525 if ( thsi->is_MemInterface() ) return Form::memory_interface;
2526 if ( thsi->is_ConstInterface() ) return Form::constant_interface;
2527 if ( thsi->is_CondInterface() ) return Form::conditional_interface;
2528
2529 return Form::no_interface;
2530 }
2531
2532 RegInterface *Interface::is_RegInterface() {
2533 if ( strcmp(_name,"REG_INTER") != 0 )
2534 return NULL;
2535 return (RegInterface*)this;
2536 }
2537 MemInterface *Interface::is_MemInterface() {
2538 if ( strcmp(_name,"MEMORY_INTER") != 0 ) return NULL;
2539 return (MemInterface*)this;
2540 }
2541 ConstInterface *Interface::is_ConstInterface() {
2542 if ( strcmp(_name,"CONST_INTER") != 0 ) return NULL;
2543 return (ConstInterface*)this;
2544 }
2545 CondInterface *Interface::is_CondInterface() {
2546 if ( strcmp(_name,"COND_INTER") != 0 ) return NULL;
2547 return (CondInterface*)this;
2548 }
2549
2550
2551 void Interface::dump() {
2552 output(stderr);
2553 }
2554
2555 // Write info to output files
2556 void Interface::output(FILE *fp) {
2557 fprintf(fp,"Interface: %s\n", (_name ? _name : "") );
2558 }
2559
2560 //------------------------------RegInterface-----------------------------------
2561 RegInterface::RegInterface() : Interface("REG_INTER") {
2562 }
2563 RegInterface::~RegInterface() {
2564 }
2565
2566 void RegInterface::dump() {
2567 output(stderr);
2568 }
2569
2570 // Write info to output files
2571 void RegInterface::output(FILE *fp) {
2572 Interface::output(fp);
2573 }
2574
2575 //------------------------------ConstInterface---------------------------------
2576 ConstInterface::ConstInterface() : Interface("CONST_INTER") {
2577 }
2578 ConstInterface::~ConstInterface() {
2579 }
2580
2581 void ConstInterface::dump() {
2582 output(stderr);
2583 }
2584
2585 // Write info to output files
2586 void ConstInterface::output(FILE *fp) {
2587 Interface::output(fp);
2588 }
2589
2590 //------------------------------MemInterface-----------------------------------
2591 MemInterface::MemInterface(char *base, char *index, char *scale, char *disp)
2592 : Interface("MEMORY_INTER"), _base(base), _index(index), _scale(scale), _disp(disp) {
2593 }
2594 MemInterface::~MemInterface() {
2595 // not owner of any character arrays
2596 }
2597
2598 void MemInterface::dump() {
2599 output(stderr);
2600 }
2601
2602 // Write info to output files
2603 void MemInterface::output(FILE *fp) {
2604 Interface::output(fp);
2605 if ( _base != NULL ) fprintf(fp," base == %s\n", _base);
2606 if ( _index != NULL ) fprintf(fp," index == %s\n", _index);
2607 if ( _scale != NULL ) fprintf(fp," scale == %s\n", _scale);
2608 if ( _disp != NULL ) fprintf(fp," disp == %s\n", _disp);
2609 // fprintf(fp,"\n");
2610 }
2611
2612 //------------------------------CondInterface----------------------------------
2613 CondInterface::CondInterface(char *equal, char *not_equal,
2614 char *less, char *greater_equal,
2615 char *less_equal, char *greater)
2616 : Interface("COND_INTER"),
2617 _equal(equal), _not_equal(not_equal),
2618 _less(less), _greater_equal(greater_equal),
2619 _less_equal(less_equal), _greater(greater) {
2620 //
2621 }
2622 CondInterface::~CondInterface() {
2623 // not owner of any character arrays
2624 }
2625
2626 void CondInterface::dump() {
2627 output(stderr);
2628 }
2629
2630 // Write info to output files
2631 void CondInterface::output(FILE *fp) {
2632 Interface::output(fp);
2633 if ( _equal != NULL ) fprintf(fp," equal == %s\n", _equal);
2634 if ( _not_equal != NULL ) fprintf(fp," not_equal == %s\n", _not_equal);
2635 if ( _less != NULL ) fprintf(fp," less == %s\n", _less);
2636 if ( _greater_equal != NULL ) fprintf(fp," greater_equal == %s\n", _greater_equal);
2637 if ( _less_equal != NULL ) fprintf(fp," less_equal == %s\n", _less_equal);
2638 if ( _greater != NULL ) fprintf(fp," greater == %s\n", _greater);
2639 // fprintf(fp,"\n");
2640 }
2641
2642 //------------------------------ConstructRule----------------------------------
2643 ConstructRule::ConstructRule(char *cnstr)
2644 : _construct(cnstr) {
2645 }
2646 ConstructRule::~ConstructRule() {
2647 }
2648
2649 void ConstructRule::dump() {
2650 output(stderr);
2651 }
2652
2653 void ConstructRule::output(FILE *fp) {
2654 fprintf(fp,"\nConstruct Rule\n"); // Write to output files
2655 }
2656
2657
2658 //==============================Shared Forms===================================
2659 //------------------------------AttributeForm----------------------------------
2660 int AttributeForm::_insId = 0; // start counter at 0
2661 int AttributeForm::_opId = 0; // start counter at 0
2662 const char* AttributeForm::_ins_cost = "ins_cost"; // required name
2663 const char* AttributeForm::_ins_pc_relative = "ins_pc_relative";
2664 const char* AttributeForm::_op_cost = "op_cost"; // required name
2665
2666 AttributeForm::AttributeForm(char *attr, int type, char *attrdef)
2667 : Form(Form::ATTR), _attrname(attr), _atype(type), _attrdef(attrdef) {
2668 if (type==OP_ATTR) {
2669 id = ++_opId;
2670 }
2671 else if (type==INS_ATTR) {
2672 id = ++_insId;
2673 }
2674 else assert( false,"");
2675 }
2676 AttributeForm::~AttributeForm() {
2677 }
2678
2679 // Dynamic type check
2680 AttributeForm *AttributeForm::is_attribute() const {
2681 return (AttributeForm*)this;
2682 }
2683
2684
2685 // inlined // int AttributeForm::type() { return id;}
2686
2687 void AttributeForm::dump() {
2688 output(stderr);
2689 }
2690
2691 void AttributeForm::output(FILE *fp) {
2692 if( _attrname && _attrdef ) {
2693 fprintf(fp,"\n// AttributeForm \nstatic const int %s = %s;\n",
2694 _attrname, _attrdef);
2695 }
2696 else {
2697 fprintf(fp,"\n// AttributeForm missing name %s or definition %s\n",
2698 (_attrname?_attrname:""), (_attrdef?_attrdef:"") );
2699 }
2700 }
2701
2702 //------------------------------Component--------------------------------------
2703 Component::Component(const char *name, const char *type, int usedef)
2704 : _name(name), _type(type), _usedef(usedef) {
2705 _ftype = Form::COMP;
2706 }
2707 Component::~Component() {
2708 }
2709
2710 // True if this component is equal to the parameter.
2711 bool Component::is(int use_def_kill_enum) const {
2712 return (_usedef == use_def_kill_enum ? true : false);
2713 }
2714 // True if this component is used/def'd/kill'd as the parameter suggests.
2715 bool Component::isa(int use_def_kill_enum) const {
2716 return (_usedef & use_def_kill_enum) == use_def_kill_enum;
2717 }
2718
2719 // Extend this component with additional use/def/kill behavior
2720 int Component::promote_use_def_info(int new_use_def) {
2721 _usedef |= new_use_def;
2722
2723 return _usedef;
2724 }
2725
2726 // Check the base type of this component, if it has one
2727 const char *Component::base_type(FormDict &globals) {
2728 const Form *frm = globals[_type];
2729 if (frm == NULL) return NULL;
2730 OperandForm *op = frm->is_operand();
2731 if (op == NULL) return NULL;
2732 if (op->ideal_only()) return op->_ident;
2733 return (char *)op->ideal_type(globals);
2734 }
2735
2736 void Component::dump() {
2737 output(stderr);
2738 }
2739
2740 void Component::output(FILE *fp) {
2741 fprintf(fp,"Component:"); // Write to output files
2742 fprintf(fp, " name = %s", _name);
2743 fprintf(fp, ", type = %s", _type);
2744 const char * usedef = "Undefined Use/Def info";
2745 switch (_usedef) {
2746 case USE: usedef = "USE"; break;
2747 case USE_DEF: usedef = "USE_DEF"; break;
2748 case USE_KILL: usedef = "USE_KILL"; break;
2749 case KILL: usedef = "KILL"; break;
2750 case TEMP: usedef = "TEMP"; break;
2751 case DEF: usedef = "DEF"; break;
2752 default: assert(false, "unknown effect");
2753 }
2754 fprintf(fp, ", use/def = %s\n", usedef);
2755 }
2756
2757
2758 //------------------------------ComponentList---------------------------------
2759 ComponentList::ComponentList() : NameList(), _matchcnt(0) {
2760 }
2761 ComponentList::~ComponentList() {
2762 // // This list may not own its elements if copied via assignment
2763 // Component *component;
2764 // for (reset(); (component = iter()) != NULL;) {
2765 // delete component;
2766 // }
2767 }
2768
2769 void ComponentList::insert(Component *component, bool mflag) {
2770 NameList::addName((char *)component);
2771 if(mflag) _matchcnt++;
2772 }
2773 void ComponentList::insert(const char *name, const char *opType, int usedef,
2774 bool mflag) {
2775 Component * component = new Component(name, opType, usedef);
2776 insert(component, mflag);
2777 }
2778 Component *ComponentList::current() { return (Component*)NameList::current(); }
2779 Component *ComponentList::iter() { return (Component*)NameList::iter(); }
2780 Component *ComponentList::match_iter() {
2781 if(_iter < _matchcnt) return (Component*)NameList::iter();
2782 return NULL;
2783 }
2784 Component *ComponentList::post_match_iter() {
2785 Component *comp = iter();
2786 // At end of list?
2787 if ( comp == NULL ) {
2788 return comp;
2789 }
2790 // In post-match components?
2791 if (_iter > match_count()-1) {
2792 return comp;
2793 }
2794
2795 return post_match_iter();
2796 }
2797
2798 void ComponentList::reset() { NameList::reset(); }
2799 int ComponentList::count() { return NameList::count(); }
2800
2801 Component *ComponentList::operator[](int position) {
2802 // Shortcut complete iteration if there are not enough entries
2803 if (position >= count()) return NULL;
2804
2805 int index = 0;
2806 Component *component = NULL;
2807 for (reset(); (component = iter()) != NULL;) {
2808 if (index == position) {
2809 return component;
2810 }
2811 ++index;
2812 }
2813
2814 return NULL;
2815 }
2816
2817 const Component *ComponentList::search(const char *name) {
2818 PreserveIter pi(this);
2819 reset();
2820 for( Component *comp = NULL; ((comp = iter()) != NULL); ) {
2821 if( strcmp(comp->_name,name) == 0 ) return comp;
2822 }
2823
2824 return NULL;
2825 }
2826
2827 // Return number of USEs + number of DEFs
2828 // When there are no components, or the first component is a USE,
2829 // then we add '1' to hold a space for the 'result' operand.
2830 int ComponentList::num_operands() {
2831 PreserveIter pi(this);
2832 uint count = 1; // result operand
2833 uint position = 0;
2834
2835 Component *component = NULL;
2836 for( reset(); (component = iter()) != NULL; ++position ) {
2837 if( component->isa(Component::USE) ||
2838 ( position == 0 && (! component->isa(Component::DEF))) ) {
2839 ++count;
2840 }
2841 }
2842
2843 return count;
2844 }
2845
2846 // Return zero-based position in list; -1 if not in list.
2847 // if parameter 'usedef' is ::USE, it will match USE, USE_DEF, ...
2848 int ComponentList::operand_position(const char *name, int usedef) {
2849 PreserveIter pi(this);
2850 int position = 0;
2851 int num_opnds = num_operands();
2852 Component *component;
2853 Component* preceding_non_use = NULL;
2854 Component* first_def = NULL;
2855 for (reset(); (component = iter()) != NULL; ++position) {
2856 // When the first component is not a DEF,
2857 // leave space for the result operand!
2858 if ( position==0 && (! component->isa(Component::DEF)) ) {
2859 ++position;
2860 ++num_opnds;
2861 }
2862 if (strcmp(name, component->_name)==0 && (component->isa(usedef))) {
2863 // When the first entry in the component list is a DEF and a USE
2864 // Treat them as being separate, a DEF first, then a USE
2865 if( position==0
2866 && usedef==Component::USE && component->isa(Component::DEF) ) {
2867 assert(position+1 < num_opnds, "advertised index in bounds");
2868 return position+1;
2869 } else {
2870 if( preceding_non_use && strcmp(component->_name, preceding_non_use->_name) ) {
2871 fprintf(stderr, "the name '%s' should not precede the name '%s'\n", preceding_non_use->_name, name);
2872 }
2873 if( position >= num_opnds ) {
2874 fprintf(stderr, "the name '%s' is too late in its name list\n", name);
2875 }
2876 assert(position < num_opnds, "advertised index in bounds");
2877 return position;
2878 }
2879 }
2880 if( component->isa(Component::DEF)
2881 && component->isa(Component::USE) ) {
2882 ++position;
2883 if( position != 1 ) --position; // only use two slots for the 1st USE_DEF
2884 }
2885 if( component->isa(Component::DEF) && !first_def ) {
2886 first_def = component;
2887 }
2888 if( !component->isa(Component::USE) && component != first_def ) {
2889 preceding_non_use = component;
2890 } else if( preceding_non_use && !strcmp(component->_name, preceding_non_use->_name) ) {
2891 preceding_non_use = NULL;
2892 }
2893 }
2894 return Not_in_list;
2895 }
2896
2897 // Find position for this name, regardless of use/def information
2898 int ComponentList::operand_position(const char *name) {
2899 PreserveIter pi(this);
2900 int position = 0;
2901 Component *component;
2902 for (reset(); (component = iter()) != NULL; ++position) {
2903 // When the first component is not a DEF,
2904 // leave space for the result operand!
2905 if ( position==0 && (! component->isa(Component::DEF)) ) {
2906 ++position;
2907 }
2908 if (strcmp(name, component->_name)==0) {
2909 return position;
2910 }
2911 if( component->isa(Component::DEF)
2912 && component->isa(Component::USE) ) {
2913 ++position;
2914 if( position != 1 ) --position; // only use two slots for the 1st USE_DEF
2915 }
2916 }
2917 return Not_in_list;
2918 }
2919
2920 int ComponentList::operand_position_format(const char *name) {
2921 PreserveIter pi(this);
2922 int first_position = operand_position(name);
2923 int use_position = operand_position(name, Component::USE);
2924
2925 return ((first_position < use_position) ? use_position : first_position);
2926 }
2927
2928 int ComponentList::label_position() {
2929 PreserveIter pi(this);
2930 int position = 0;
2931 reset();
2932 for( Component *comp; (comp = iter()) != NULL; ++position) {
2933 // When the first component is not a DEF,
2934 // leave space for the result operand!
2935 if ( position==0 && (! comp->isa(Component::DEF)) ) {
2936 ++position;
2937 }
2938 if (strcmp(comp->_type, "label")==0) {
2939 return position;
2940 }
2941 if( comp->isa(Component::DEF)
2942 && comp->isa(Component::USE) ) {
2943 ++position;
2944 if( position != 1 ) --position; // only use two slots for the 1st USE_DEF
2945 }
2946 }
2947
2948 return -1;
2949 }
2950
2951 int ComponentList::method_position() {
2952 PreserveIter pi(this);
2953 int position = 0;
2954 reset();
2955 for( Component *comp; (comp = iter()) != NULL; ++position) {
2956 // When the first component is not a DEF,
2957 // leave space for the result operand!
2958 if ( position==0 && (! comp->isa(Component::DEF)) ) {
2959 ++position;
2960 }
2961 if (strcmp(comp->_type, "method")==0) {
2962 return position;
2963 }
2964 if( comp->isa(Component::DEF)
2965 && comp->isa(Component::USE) ) {
2966 ++position;
2967 if( position != 1 ) --position; // only use two slots for the 1st USE_DEF
2968 }
2969 }
2970
2971 return -1;
2972 }
2973
2974 void ComponentList::dump() { output(stderr); }
2975
2976 void ComponentList::output(FILE *fp) {
2977 PreserveIter pi(this);
2978 fprintf(fp, "\n");
2979 Component *component;
2980 for (reset(); (component = iter()) != NULL;) {
2981 component->output(fp);
2982 }
2983 fprintf(fp, "\n");
2984 }
2985
2986 //------------------------------MatchNode--------------------------------------
2987 MatchNode::MatchNode(ArchDesc &ad, const char *result, const char *mexpr,
2988 const char *opType, MatchNode *lChild, MatchNode *rChild)
2989 : _AD(ad), _result(result), _name(mexpr), _opType(opType),
2990 _lChild(lChild), _rChild(rChild), _internalop(0), _numleaves(0),
2991 _commutative_id(0) {
2992 _numleaves = (lChild ? lChild->_numleaves : 0)
2993 + (rChild ? rChild->_numleaves : 0);
2994 }
2995
2996 MatchNode::MatchNode(ArchDesc &ad, MatchNode& mnode)
2997 : _AD(ad), _result(mnode._result), _name(mnode._name),
2998 _opType(mnode._opType), _lChild(mnode._lChild), _rChild(mnode._rChild),
2999 _internalop(0), _numleaves(mnode._numleaves),
3000 _commutative_id(mnode._commutative_id) {
3001 }
3002
3003 MatchNode::MatchNode(ArchDesc &ad, MatchNode& mnode, int clone)
3004 : _AD(ad), _result(mnode._result), _name(mnode._name),
3005 _opType(mnode._opType),
3006 _internalop(0), _numleaves(mnode._numleaves),
3007 _commutative_id(mnode._commutative_id) {
3008 if (mnode._lChild) {
3009 _lChild = new MatchNode(ad, *mnode._lChild, clone);
3010 } else {
3011 _lChild = NULL;
3012 }
3013 if (mnode._rChild) {
3014 _rChild = new MatchNode(ad, *mnode._rChild, clone);
3015 } else {
3016 _rChild = NULL;
3017 }
3018 }
3019
3020 MatchNode::~MatchNode() {
3021 // // This node may not own its children if copied via assignment
3022 // if( _lChild ) delete _lChild;
3023 // if( _rChild ) delete _rChild;
3024 }
3025
3026 bool MatchNode::find_type(const char *type, int &position) const {
3027 if ( (_lChild != NULL) && (_lChild->find_type(type, position)) ) return true;
3028 if ( (_rChild != NULL) && (_rChild->find_type(type, position)) ) return true;
3029
3030 if (strcmp(type,_opType)==0) {
3031 return true;
3032 } else {
3033 ++position;
3034 }
3035 return false;
3036 }
3037
3038 // Recursive call collecting info on top-level operands, not transitive.
3039 // Implementation does not modify state of internal structures.
3040 void MatchNode::append_components(FormDict &locals, ComponentList &components,
3041 bool deflag) const {
3042 int usedef = deflag ? Component::DEF : Component::USE;
3043 FormDict &globals = _AD.globalNames();
3044
3045 assert (_name != NULL, "MatchNode::build_components encountered empty node\n");
3046 // Base case
3047 if (_lChild==NULL && _rChild==NULL) {
3048 // If _opType is not an operation, do not build a component for it #####
3049 const Form *f = globals[_opType];
3050 if( f != NULL ) {
3051 // Add non-ideals that are operands, operand-classes,
3052 if( ! f->ideal_only()
3053 && (f->is_opclass() || f->is_operand()) ) {
3054 components.insert(_name, _opType, usedef, true);
3055 }
3056 }
3057 return;
3058 }
3059 // Promote results of "Set" to DEF
3060 bool def_flag = (!strcmp(_opType, "Set")) ? true : false;
3061 if (_lChild) _lChild->append_components(locals, components, def_flag);
3062 def_flag = false; // only applies to component immediately following 'Set'
3063 if (_rChild) _rChild->append_components(locals, components, def_flag);
3064 }
3065
3066 // Find the n'th base-operand in the match node,
3067 // recursively investigates match rules of user-defined operands.
3068 //
3069 // Implementation does not modify state of internal structures since they
3070 // can be shared.
3071 bool MatchNode::base_operand(uint &position, FormDict &globals,
3072 const char * &result, const char * &name,
3073 const char * &opType) const {
3074 assert (_name != NULL, "MatchNode::base_operand encountered empty node\n");
3075 // Base case
3076 if (_lChild==NULL && _rChild==NULL) {
3077 // Check for special case: "Universe", "label"
3078 if (strcmp(_opType,"Universe") == 0 || strcmp(_opType,"label")==0 ) {
3079 if (position == 0) {
3080 result = _result;
3081 name = _name;
3082 opType = _opType;
3083 return 1;
3084 } else {
3085 -- position;
3086 return 0;
3087 }
3088 }
3089
3090 const Form *form = globals[_opType];
3091 MatchNode *matchNode = NULL;
3092 // Check for user-defined type
3093 if (form) {
3094 // User operand or instruction?
3095 OperandForm *opForm = form->is_operand();
3096 InstructForm *inForm = form->is_instruction();
3097 if ( opForm ) {
3098 matchNode = (MatchNode*)opForm->_matrule;
3099 } else if ( inForm ) {
3100 matchNode = (MatchNode*)inForm->_matrule;
3101 }
3102 }
3103 // if this is user-defined, recurse on match rule
3104 // User-defined operand and instruction forms have a match-rule.
3105 if (matchNode) {
3106 return (matchNode->base_operand(position,globals,result,name,opType));
3107 } else {
3108 // Either not a form, or a system-defined form (no match rule).
3109 if (position==0) {
3110 result = _result;
3111 name = _name;
3112 opType = _opType;
3113 return 1;
3114 } else {
3115 --position;
3116 return 0;
3117 }
3118 }
3119
3120 } else {
3121 // Examine the left child and right child as well
3122 if (_lChild) {
3123 if (_lChild->base_operand(position, globals, result, name, opType))
3124 return 1;
3125 }
3126
3127 if (_rChild) {
3128 if (_rChild->base_operand(position, globals, result, name, opType))
3129 return 1;
3130 }
3131 }
3132
3133 return 0;
3134 }
3135
3136 // Recursive call on all operands' match rules in my match rule.
3137 uint MatchNode::num_consts(FormDict &globals) const {
3138 uint index = 0;
3139 uint num_consts = 0;
3140 const char *result;
3141 const char *name;
3142 const char *opType;
3143
3144 for (uint position = index;
3145 base_operand(position,globals,result,name,opType); position = index) {
3146 ++index;
3147 if( ideal_to_const_type(opType) ) num_consts++;
3148 }
3149
3150 return num_consts;
3151 }
3152
3153 // Recursive call on all operands' match rules in my match rule.
3154 // Constants in match rule subtree with specified type
3155 uint MatchNode::num_consts(FormDict &globals, Form::DataType type) const {
3156 uint index = 0;
3157 uint num_consts = 0;
3158 const char *result;
3159 const char *name;
3160 const char *opType;
3161
3162 for (uint position = index;
3163 base_operand(position,globals,result,name,opType); position = index) {
3164 ++index;
3165 if( ideal_to_const_type(opType) == type ) num_consts++;
3166 }
3167
3168 return num_consts;
3169 }
3170
3171 // Recursive call on all operands' match rules in my match rule.
3172 uint MatchNode::num_const_ptrs(FormDict &globals) const {
3173 return num_consts( globals, Form::idealP );
3174 }
3175
3176 bool MatchNode::sets_result() const {
3177 return ( (strcmp(_name,"Set") == 0) ? true : false );
3178 }
3179
3180 const char *MatchNode::reduce_right(FormDict &globals) const {
3181 // If there is no right reduction, return NULL.
3182 const char *rightStr = NULL;
3183
3184 // If we are a "Set", start from the right child.
3185 const MatchNode *const mnode = sets_result() ?
3186 (const MatchNode *const)this->_rChild :
3187 (const MatchNode *const)this;
3188
3189 // If our right child exists, it is the right reduction
3190 if ( mnode->_rChild ) {
3191 rightStr = mnode->_rChild->_internalop ? mnode->_rChild->_internalop
3192 : mnode->_rChild->_opType;
3193 }
3194 // Else, May be simple chain rule: (Set dst operand_form), rightStr=NULL;
3195 return rightStr;
3196 }
3197
3198 const char *MatchNode::reduce_left(FormDict &globals) const {
3199 // If there is no left reduction, return NULL.
3200 const char *leftStr = NULL;
3201
3202 // If we are a "Set", start from the right child.
3203 const MatchNode *const mnode = sets_result() ?
3204 (const MatchNode *const)this->_rChild :
3205 (const MatchNode *const)this;
3206
3207 // If our left child exists, it is the left reduction
3208 if ( mnode->_lChild ) {
3209 leftStr = mnode->_lChild->_internalop ? mnode->_lChild->_internalop
3210 : mnode->_lChild->_opType;
3211 } else {
3212 // May be simple chain rule: (Set dst operand_form_source)
3213 if ( sets_result() ) {
3214 OperandForm *oper = globals[mnode->_opType]->is_operand();
3215 if( oper ) {
3216 leftStr = mnode->_opType;
3217 }
3218 }
3219 }
3220 return leftStr;
3221 }
3222
3223 //------------------------------count_instr_names------------------------------
3224 // Count occurrences of operands names in the leaves of the instruction
3225 // match rule.
3226 void MatchNode::count_instr_names( Dict &names ) {
3227 if( !this ) return;
3228 if( _lChild ) _lChild->count_instr_names(names);
3229 if( _rChild ) _rChild->count_instr_names(names);
3230 if( !_lChild && !_rChild ) {
3231 uintptr_t cnt = (uintptr_t)names[_name];
3232 cnt++; // One more name found
3233 names.Insert(_name,(void*)cnt);
3234 }
3235 }
3236
3237 //------------------------------build_instr_pred-------------------------------
3238 // Build a path to 'name' in buf. Actually only build if cnt is zero, so we
3239 // can skip some leading instances of 'name'.
3240 int MatchNode::build_instr_pred( char *buf, const char *name, int cnt ) {
3241 if( _lChild ) {
3242 if( !cnt ) strcpy( buf, "_kids[0]->" );
3243 cnt = _lChild->build_instr_pred( buf+strlen(buf), name, cnt );
3244 if( cnt < 0 ) return cnt; // Found it, all done
3245 }
3246 if( _rChild ) {
3247 if( !cnt ) strcpy( buf, "_kids[1]->" );
3248 cnt = _rChild->build_instr_pred( buf+strlen(buf), name, cnt );
3249 if( cnt < 0 ) return cnt; // Found it, all done
3250 }
3251 if( !_lChild && !_rChild ) { // Found a leaf
3252 // Wrong name? Give up...
3253 if( strcmp(name,_name) ) return cnt;
3254 if( !cnt ) strcpy(buf,"_leaf");
3255 return cnt-1;
3256 }
3257 return cnt;
3258 }
3259
3260
3261 //------------------------------build_internalop-------------------------------
3262 // Build string representation of subtree
3263 void MatchNode::build_internalop( ) {
3264 char *iop, *subtree;
3265 const char *lstr, *rstr;
3266 // Build string representation of subtree
3267 // Operation lchildType rchildType
3268 int len = (int)strlen(_opType) + 4;
3269 lstr = (_lChild) ? ((_lChild->_internalop) ?
3270 _lChild->_internalop : _lChild->_opType) : "";
3271 rstr = (_rChild) ? ((_rChild->_internalop) ?
3272 _rChild->_internalop : _rChild->_opType) : "";
3273 len += (int)strlen(lstr) + (int)strlen(rstr);
3274 subtree = (char *)malloc(len);
3275 sprintf(subtree,"_%s_%s_%s", _opType, lstr, rstr);
3276 // Hash the subtree string in _internalOps; if a name exists, use it
3277 iop = (char *)_AD._internalOps[subtree];
3278 // Else create a unique name, and add it to the hash table
3279 if (iop == NULL) {
3280 iop = subtree;
3281 _AD._internalOps.Insert(subtree, iop);
3282 _AD._internalOpNames.addName(iop);
3283 _AD._internalMatch.Insert(iop, this);
3284 }
3285 // Add the internal operand name to the MatchNode
3286 _internalop = iop;
3287 _result = iop;
3288 }
3289
3290
3291 void MatchNode::dump() {
3292 output(stderr);
3293 }
3294
3295 void MatchNode::output(FILE *fp) {
3296 if (_lChild==0 && _rChild==0) {
3297 fprintf(fp," %s",_name); // operand
3298 }
3299 else {
3300 fprintf(fp," (%s ",_name); // " (opcodeName "
3301 if(_lChild) _lChild->output(fp); // left operand
3302 if(_rChild) _rChild->output(fp); // right operand
3303 fprintf(fp,")"); // ")"
3304 }
3305 }
3306
3307 int MatchNode::needs_ideal_memory_edge(FormDict &globals) const {
3308 static const char *needs_ideal_memory_list[] = {
3309 "StoreI","StoreL","StoreP","StoreN","StoreD","StoreF" ,
3310 "StoreB","StoreC","Store" ,"StoreFP",
3311 "LoadI" ,"LoadL", "LoadP" ,"LoadN", "LoadD" ,"LoadF" ,
3312 "LoadB" ,"LoadC" ,"LoadS" ,"Load" ,
3313 "Store4I","Store2I","Store2L","Store2D","Store4F","Store2F","Store16B",
3314 "Store8B","Store4B","Store8C","Store4C","Store2C",
3315 "Load4I" ,"Load2I" ,"Load2L" ,"Load2D" ,"Load4F" ,"Load2F" ,"Load16B" ,
3316 "Load8B" ,"Load4B" ,"Load8C" ,"Load4C" ,"Load2C" ,"Load8S", "Load4S","Load2S",
3317 "LoadRange", "LoadKlass", "LoadNKlass", "LoadL_unaligned", "LoadD_unaligned",
3318 "LoadPLocked", "LoadLLocked",
3319 "StorePConditional", "StoreLConditional",
3320 "CompareAndSwapI", "CompareAndSwapL", "CompareAndSwapP", "CompareAndSwapN",
3321 "StoreCM",
3322 "ClearArray"
3323 };
3324 int cnt = sizeof(needs_ideal_memory_list)/sizeof(char*);
3325 if( strcmp(_opType,"PrefetchRead")==0 || strcmp(_opType,"PrefetchWrite")==0 )
3326 return 1;
3327 if( _lChild ) {
3328 const char *opType = _lChild->_opType;
3329 for( int i=0; i<cnt; i++ )
3330 if( strcmp(opType,needs_ideal_memory_list[i]) == 0 )
3331 return 1;
3332 if( _lChild->needs_ideal_memory_edge(globals) )
3333 return 1;
3334 }
3335 if( _rChild ) {
3336 const char *opType = _rChild->_opType;
3337 for( int i=0; i<cnt; i++ )
3338 if( strcmp(opType,needs_ideal_memory_list[i]) == 0 )
3339 return 1;
3340 if( _rChild->needs_ideal_memory_edge(globals) )
3341 return 1;
3342 }
3343
3344 return 0;
3345 }
3346
3347 // TRUE if defines a derived oop, and so needs a base oop edge present
3348 // post-matching.
3349 int MatchNode::needs_base_oop_edge() const {
3350 if( !strcmp(_opType,"AddP") ) return 1;
3351 if( strcmp(_opType,"Set") ) return 0;
3352 return !strcmp(_rChild->_opType,"AddP");
3353 }
3354
3355 int InstructForm::needs_base_oop_edge(FormDict &globals) const {
3356 if( is_simple_chain_rule(globals) ) {
3357 const char *src = _matrule->_rChild->_opType;
3358 OperandForm *src_op = globals[src]->is_operand();
3359 assert( src_op, "Not operand class of chain rule" );
3360 return src_op->_matrule ? src_op->_matrule->needs_base_oop_edge() : 0;
3361 } // Else check instruction
3362
3363 return _matrule ? _matrule->needs_base_oop_edge() : 0;
3364 }
3365
3366
3367 //-------------------------cisc spilling methods-------------------------------
3368 // helper routines and methods for detecting cisc-spilling instructions
3369 //-------------------------cisc_spill_merge------------------------------------
3370 int MatchNode::cisc_spill_merge(int left_spillable, int right_spillable) {
3371 int cisc_spillable = Maybe_cisc_spillable;
3372
3373 // Combine results of left and right checks
3374 if( (left_spillable == Maybe_cisc_spillable) && (right_spillable == Maybe_cisc_spillable) ) {
3375 // neither side is spillable, nor prevents cisc spilling
3376 cisc_spillable = Maybe_cisc_spillable;
3377 }
3378 else if( (left_spillable == Maybe_cisc_spillable) && (right_spillable > Maybe_cisc_spillable) ) {
3379 // right side is spillable
3380 cisc_spillable = right_spillable;
3381 }
3382 else if( (right_spillable == Maybe_cisc_spillable) && (left_spillable > Maybe_cisc_spillable) ) {
3383 // left side is spillable
3384 cisc_spillable = left_spillable;
3385 }
3386 else if( (left_spillable == Not_cisc_spillable) || (right_spillable == Not_cisc_spillable) ) {
3387 // left or right prevents cisc spilling this instruction
3388 cisc_spillable = Not_cisc_spillable;
3389 }
3390 else {
3391 // Only allow one to spill
3392 cisc_spillable = Not_cisc_spillable;
3393 }
3394
3395 return cisc_spillable;
3396 }
3397
3398 //-------------------------root_ops_match--------------------------------------
3399 bool static root_ops_match(FormDict &globals, const char *op1, const char *op2) {
3400 // Base Case: check that the current operands/operations match
3401 assert( op1, "Must have op's name");
3402 assert( op2, "Must have op's name");
3403 const Form *form1 = globals[op1];
3404 const Form *form2 = globals[op2];
3405
3406 return (form1 == form2);
3407 }
3408
3409 //-------------------------cisc_spill_match------------------------------------
3410 // Recursively check two MatchRules for legal conversion via cisc-spilling
3411 int MatchNode::cisc_spill_match(FormDict &globals, RegisterForm *registers, MatchNode *mRule2, const char * &operand, const char * ®_type) {
3412 int cisc_spillable = Maybe_cisc_spillable;
3413 int left_spillable = Maybe_cisc_spillable;
3414 int right_spillable = Maybe_cisc_spillable;
3415
3416 // Check that each has same number of operands at this level
3417 if( (_lChild && !(mRule2->_lChild)) || (_rChild && !(mRule2->_rChild)) )
3418 return Not_cisc_spillable;
3419
3420 // Base Case: check that the current operands/operations match
3421 // or are CISC spillable
3422 assert( _opType, "Must have _opType");
3423 assert( mRule2->_opType, "Must have _opType");
3424 const Form *form = globals[_opType];
3425 const Form *form2 = globals[mRule2->_opType];
3426 if( form == form2 ) {
3427 cisc_spillable = Maybe_cisc_spillable;
3428 } else {
3429 const InstructForm *form2_inst = form2 ? form2->is_instruction() : NULL;
3430 const char *name_left = mRule2->_lChild ? mRule2->_lChild->_opType : NULL;
3431 const char *name_right = mRule2->_rChild ? mRule2->_rChild->_opType : NULL;
3432 // Detect reg vs (loadX memory)
3433 if( form->is_cisc_reg(globals)
3434 && form2_inst
3435 && (is_load_from_memory(mRule2->_opType) != Form::none) // reg vs. (load memory)
3436 && (name_left != NULL) // NOT (load)
3437 && (name_right == NULL) ) { // NOT (load memory foo)
3438 const Form *form2_left = name_left ? globals[name_left] : NULL;
3439 if( form2_left && form2_left->is_cisc_mem(globals) ) {
3440 cisc_spillable = Is_cisc_spillable;
3441 operand = _name;
3442 reg_type = _result;
3443 return Is_cisc_spillable;
3444 } else {
3445 cisc_spillable = Not_cisc_spillable;
3446 }
3447 }
3448 // Detect reg vs memory
3449 else if( form->is_cisc_reg(globals) && form2->is_cisc_mem(globals) ) {
3450 cisc_spillable = Is_cisc_spillable;
3451 operand = _name;
3452 reg_type = _result;
3453 return Is_cisc_spillable;
3454 } else {
3455 cisc_spillable = Not_cisc_spillable;
3456 }
3457 }
3458
3459 // If cisc is still possible, check rest of tree
3460 if( cisc_spillable == Maybe_cisc_spillable ) {
3461 // Check that each has same number of operands at this level
3462 if( (_lChild && !(mRule2->_lChild)) || (_rChild && !(mRule2->_rChild)) ) return Not_cisc_spillable;
3463
3464 // Check left operands
3465 if( (_lChild == NULL) && (mRule2->_lChild == NULL) ) {
3466 left_spillable = Maybe_cisc_spillable;
3467 } else {
3468 left_spillable = _lChild->cisc_spill_match(globals, registers, mRule2->_lChild, operand, reg_type);
3469 }
3470
3471 // Check right operands
3472 if( (_rChild == NULL) && (mRule2->_rChild == NULL) ) {
3473 right_spillable = Maybe_cisc_spillable;
3474 } else {
3475 right_spillable = _rChild->cisc_spill_match(globals, registers, mRule2->_rChild, operand, reg_type);
3476 }
3477
3478 // Combine results of left and right checks
3479 cisc_spillable = cisc_spill_merge(left_spillable, right_spillable);
3480 }
3481
3482 return cisc_spillable;
3483 }
3484
3485 //---------------------------cisc_spill_match----------------------------------
3486 // Recursively check two MatchRules for legal conversion via cisc-spilling
3487 // This method handles the root of Match tree,
3488 // general recursive checks done in MatchNode
3489 int MatchRule::cisc_spill_match(FormDict &globals, RegisterForm *registers,
3490 MatchRule *mRule2, const char * &operand,
3491 const char * ®_type) {
3492 int cisc_spillable = Maybe_cisc_spillable;
3493 int left_spillable = Maybe_cisc_spillable;
3494 int right_spillable = Maybe_cisc_spillable;
3495
3496 // Check that each sets a result
3497 if( !(sets_result() && mRule2->sets_result()) ) return Not_cisc_spillable;
3498 // Check that each has same number of operands at this level
3499 if( (_lChild && !(mRule2->_lChild)) || (_rChild && !(mRule2->_rChild)) ) return Not_cisc_spillable;
3500
3501 // Check left operands: at root, must be target of 'Set'
3502 if( (_lChild == NULL) || (mRule2->_lChild == NULL) ) {
3503 left_spillable = Not_cisc_spillable;
3504 } else {
3505 // Do not support cisc-spilling instruction's target location
3506 if( root_ops_match(globals, _lChild->_opType, mRule2->_lChild->_opType) ) {
3507 left_spillable = Maybe_cisc_spillable;
3508 } else {
3509 left_spillable = Not_cisc_spillable;
3510 }
3511 }
3512
3513 // Check right operands: recursive walk to identify reg->mem operand
3514 if( (_rChild == NULL) && (mRule2->_rChild == NULL) ) {
3515 right_spillable = Maybe_cisc_spillable;
3516 } else {
3517 right_spillable = _rChild->cisc_spill_match(globals, registers, mRule2->_rChild, operand, reg_type);
3518 }
3519
3520 // Combine results of left and right checks
3521 cisc_spillable = cisc_spill_merge(left_spillable, right_spillable);
3522
3523 return cisc_spillable;
3524 }
3525
3526 //----------------------------- equivalent ------------------------------------
3527 // Recursively check to see if two match rules are equivalent.
3528 // This rule handles the root.
3529 bool MatchRule::equivalent(FormDict &globals, MatchRule *mRule2) {
3530 // Check that each sets a result
3531 if (sets_result() != mRule2->sets_result()) {
3532 return false;
3533 }
3534
3535 // Check that the current operands/operations match
3536 assert( _opType, "Must have _opType");
3537 assert( mRule2->_opType, "Must have _opType");
3538 const Form *form = globals[_opType];
3539 const Form *form2 = globals[mRule2->_opType];
3540 if( form != form2 ) {
3541 return false;
3542 }
3543
3544 if (_lChild ) {
3545 if( !_lChild->equivalent(globals, mRule2->_lChild) )
3546 return false;
3547 } else if (mRule2->_lChild) {
3548 return false; // I have NULL left child, mRule2 has non-NULL left child.
3549 }
3550
3551 if (_rChild ) {
3552 if( !_rChild->equivalent(globals, mRule2->_rChild) )
3553 return false;
3554 } else if (mRule2->_rChild) {
3555 return false; // I have NULL right child, mRule2 has non-NULL right child.
3556 }
3557
3558 // We've made it through the gauntlet.
3559 return true;
3560 }
3561
3562 //----------------------------- equivalent ------------------------------------
3563 // Recursively check to see if two match rules are equivalent.
3564 // This rule handles the operands.
3565 bool MatchNode::equivalent(FormDict &globals, MatchNode *mNode2) {
3566 if( !mNode2 )
3567 return false;
3568
3569 // Check that the current operands/operations match
3570 assert( _opType, "Must have _opType");
3571 assert( mNode2->_opType, "Must have _opType");
3572 const Form *form = globals[_opType];
3573 const Form *form2 = globals[mNode2->_opType];
3574 return (form == form2);
3575 }
3576
3577 //-------------------------- has_commutative_op -------------------------------
3578 // Recursively check for commutative operations with subtree operands
3579 // which could be swapped.
3580 void MatchNode::count_commutative_op(int& count) {
3581 static const char *commut_op_list[] = {
3582 "AddI","AddL","AddF","AddD",
3583 "AndI","AndL",
3584 "MaxI","MinI",
3585 "MulI","MulL","MulF","MulD",
3586 "OrI" ,"OrL" ,
3587 "XorI","XorL"
3588 };
3589 int cnt = sizeof(commut_op_list)/sizeof(char*);
3590
3591 if( _lChild && _rChild && (_lChild->_lChild || _rChild->_lChild) ) {
3592 // Don't swap if right operand is an immediate constant.
3593 bool is_const = false;
3594 if( _rChild->_lChild == NULL && _rChild->_rChild == NULL ) {
3595 FormDict &globals = _AD.globalNames();
3596 const Form *form = globals[_rChild->_opType];
3597 if ( form ) {
3598 OperandForm *oper = form->is_operand();
3599 if( oper && oper->interface_type(globals) == Form::constant_interface )
3600 is_const = true;
3601 }
3602 }
3603 if( !is_const ) {
3604 for( int i=0; i<cnt; i++ ) {
3605 if( strcmp(_opType, commut_op_list[i]) == 0 ) {
3606 count++;
3607 _commutative_id = count; // id should be > 0
3608 break;
3609 }
3610 }
3611 }
3612 }
3613 if( _lChild )
3614 _lChild->count_commutative_op(count);
3615 if( _rChild )
3616 _rChild->count_commutative_op(count);
3617 }
3618
3619 //-------------------------- swap_commutative_op ------------------------------
3620 // Recursively swap specified commutative operation with subtree operands.
3621 void MatchNode::swap_commutative_op(bool atroot, int id) {
3622 if( _commutative_id == id ) { // id should be > 0
3623 assert(_lChild && _rChild && (_lChild->_lChild || _rChild->_lChild ),
3624 "not swappable operation");
3625 MatchNode* tmp = _lChild;
3626 _lChild = _rChild;
3627 _rChild = tmp;
3628 // Don't exit here since we need to build internalop.
3629 }
3630
3631 bool is_set = ( strcmp(_opType, "Set") == 0 );
3632 if( _lChild )
3633 _lChild->swap_commutative_op(is_set, id);
3634 if( _rChild )
3635 _rChild->swap_commutative_op(is_set, id);
3636
3637 // If not the root, reduce this subtree to an internal operand
3638 if( !atroot && (_lChild || _rChild) ) {
3639 build_internalop();
3640 }
3641 }
3642
3643 //-------------------------- swap_commutative_op ------------------------------
3644 // Recursively swap specified commutative operation with subtree operands.
3645 void MatchRule::swap_commutative_op(const char* instr_ident, int count, int& match_rules_cnt) {
3646 assert(match_rules_cnt < 100," too many match rule clones");
3647 // Clone
3648 MatchRule* clone = new MatchRule(_AD, this);
3649 // Swap operands of commutative operation
3650 ((MatchNode*)clone)->swap_commutative_op(true, count);
3651 char* buf = (char*) malloc(strlen(instr_ident) + 4);
3652 sprintf(buf, "%s_%d", instr_ident, match_rules_cnt++);
3653 clone->_result = buf;
3654
3655 clone->_next = this->_next;
3656 this-> _next = clone;
3657 if( (--count) > 0 ) {
3658 this-> swap_commutative_op(instr_ident, count, match_rules_cnt);
3659 clone->swap_commutative_op(instr_ident, count, match_rules_cnt);
3660 }
3661 }
3662
3663 //------------------------------MatchRule--------------------------------------
3664 MatchRule::MatchRule(ArchDesc &ad)
3665 : MatchNode(ad), _depth(0), _construct(NULL), _numchilds(0) {
3666 _next = NULL;
3667 }
3668
3669 MatchRule::MatchRule(ArchDesc &ad, MatchRule* mRule)
3670 : MatchNode(ad, *mRule, 0), _depth(mRule->_depth),
3671 _construct(mRule->_construct), _numchilds(mRule->_numchilds) {
3672 _next = NULL;
3673 }
3674
3675 MatchRule::MatchRule(ArchDesc &ad, MatchNode* mroot, int depth, char *cnstr,
3676 int numleaves)
3677 : MatchNode(ad,*mroot), _depth(depth), _construct(cnstr),
3678 _numchilds(0) {
3679 _next = NULL;
3680 mroot->_lChild = NULL;
3681 mroot->_rChild = NULL;
3682 delete mroot;
3683 _numleaves = numleaves;
3684 _numchilds = (_lChild ? 1 : 0) + (_rChild ? 1 : 0);
3685 }
3686 MatchRule::~MatchRule() {
3687 }
3688
3689 // Recursive call collecting info on top-level operands, not transitive.
3690 // Implementation does not modify state of internal structures.
3691 void MatchRule::append_components(FormDict &locals, ComponentList &components) const {
3692 assert (_name != NULL, "MatchNode::build_components encountered empty node\n");
3693
3694 MatchNode::append_components(locals, components,
3695 false /* not necessarily a def */);
3696 }
3697
3698 // Recursive call on all operands' match rules in my match rule.
3699 // Implementation does not modify state of internal structures since they
3700 // can be shared.
3701 // The MatchNode that is called first treats its
3702 bool MatchRule::base_operand(uint &position0, FormDict &globals,
3703 const char *&result, const char * &name,
3704 const char * &opType)const{
3705 uint position = position0;
3706
3707 return (MatchNode::base_operand( position, globals, result, name, opType));
3708 }
3709
3710
3711 bool MatchRule::is_base_register(FormDict &globals) const {
3712 uint position = 1;
3713 const char *result = NULL;
3714 const char *name = NULL;
3715 const char *opType = NULL;
3716 if (!base_operand(position, globals, result, name, opType)) {
3717 position = 0;
3718 if( base_operand(position, globals, result, name, opType) &&
3719 (strcmp(opType,"RegI")==0 ||
3720 strcmp(opType,"RegP")==0 ||
3721 strcmp(opType,"RegN")==0 ||
3722 strcmp(opType,"RegL")==0 ||
3723 strcmp(opType,"RegF")==0 ||
3724 strcmp(opType,"RegD")==0 ||
3725 strcmp(opType,"Reg" )==0) ) {
3726 return 1;
3727 }
3728 }
3729 return 0;
3730 }
3731
3732 Form::DataType MatchRule::is_base_constant(FormDict &globals) const {
3733 uint position = 1;
3734 const char *result = NULL;
3735 const char *name = NULL;
3736 const char *opType = NULL;
3737 if (!base_operand(position, globals, result, name, opType)) {
3738 position = 0;
3739 if (base_operand(position, globals, result, name, opType)) {
3740 return ideal_to_const_type(opType);
3741 }
3742 }
3743 return Form::none;
3744 }
3745
3746 bool MatchRule::is_chain_rule(FormDict &globals) const {
3747
3748 // Check for chain rule, and do not generate a match list for it
3749 if ((_lChild == NULL) && (_rChild == NULL) ) {
3750 const Form *form = globals[_opType];
3751 // If this is ideal, then it is a base match, not a chain rule.
3752 if ( form && form->is_operand() && (!form->ideal_only())) {
3753 return true;
3754 }
3755 }
3756 // Check for "Set" form of chain rule, and do not generate a match list
3757 if (_rChild) {
3758 const char *rch = _rChild->_opType;
3759 const Form *form = globals[rch];
3760 if ((!strcmp(_opType,"Set") &&
3761 ((form) && form->is_operand()))) {
3762 return true;
3763 }
3764 }
3765 return false;
3766 }
3767
3768 int MatchRule::is_ideal_copy() const {
3769 if( _rChild ) {
3770 const char *opType = _rChild->_opType;
3771 if( strcmp(opType,"CastII")==0 )
3772 return 1;
3773 // Do not treat *CastPP this way, because it
3774 // may transfer a raw pointer to an oop.
3775 // If the register allocator were to coalesce this
3776 // into a single LRG, the GC maps would be incorrect.
3777 //if( strcmp(opType,"CastPP")==0 )
3778 // return 1;
3779 //if( strcmp(opType,"CheckCastPP")==0 )
3780 // return 1;
3781 //
3782 // Do not treat CastX2P or CastP2X this way, because
3783 // raw pointers and int types are treated differently
3784 // when saving local & stack info for safepoints in
3785 // Output().
3786 //if( strcmp(opType,"CastX2P")==0 )
3787 // return 1;
3788 //if( strcmp(opType,"CastP2X")==0 )
3789 // return 1;
3790 }
3791 if( is_chain_rule(_AD.globalNames()) &&
3792 _lChild && strncmp(_lChild->_opType,"stackSlot",9)==0 )
3793 return 1;
3794 return 0;
3795 }
3796
3797
3798 int MatchRule::is_expensive() const {
3799 if( _rChild ) {
3800 const char *opType = _rChild->_opType;
3801 if( strcmp(opType,"AtanD")==0 ||
3802 strcmp(opType,"CosD")==0 ||
3803 strcmp(opType,"DivD")==0 ||
3804 strcmp(opType,"DivF")==0 ||
3805 strcmp(opType,"DivI")==0 ||
3806 strcmp(opType,"ExpD")==0 ||
3807 strcmp(opType,"LogD")==0 ||
3808 strcmp(opType,"Log10D")==0 ||
3809 strcmp(opType,"ModD")==0 ||
3810 strcmp(opType,"ModF")==0 ||
3811 strcmp(opType,"ModI")==0 ||
3812 strcmp(opType,"PowD")==0 ||
3813 strcmp(opType,"SinD")==0 ||
3814 strcmp(opType,"SqrtD")==0 ||
3815 strcmp(opType,"TanD")==0 ||
3816 strcmp(opType,"ConvD2F")==0 ||
3817 strcmp(opType,"ConvD2I")==0 ||
3818 strcmp(opType,"ConvD2L")==0 ||
3819 strcmp(opType,"ConvF2D")==0 ||
3820 strcmp(opType,"ConvF2I")==0 ||
3821 strcmp(opType,"ConvF2L")==0 ||
3822 strcmp(opType,"ConvI2D")==0 ||
3823 strcmp(opType,"ConvI2F")==0 ||
3824 strcmp(opType,"ConvI2L")==0 ||
3825 strcmp(opType,"ConvL2D")==0 ||
3826 strcmp(opType,"ConvL2F")==0 ||
3827 strcmp(opType,"ConvL2I")==0 ||
3828 strcmp(opType,"RoundDouble")==0 ||
3829 strcmp(opType,"RoundFloat")==0 ||
3830 strcmp(opType,"ReverseBytesI")==0 ||
3831 strcmp(opType,"ReverseBytesL")==0 ||
3832 strcmp(opType,"Replicate16B")==0 ||
3833 strcmp(opType,"Replicate8B")==0 ||
3834 strcmp(opType,"Replicate4B")==0 ||
3835 strcmp(opType,"Replicate8C")==0 ||
3836 strcmp(opType,"Replicate4C")==0 ||
3837 strcmp(opType,"Replicate8S")==0 ||
3838 strcmp(opType,"Replicate4S")==0 ||
3839 strcmp(opType,"Replicate4I")==0 ||
3840 strcmp(opType,"Replicate2I")==0 ||
3841 strcmp(opType,"Replicate2L")==0 ||
3842 strcmp(opType,"Replicate4F")==0 ||
3843 strcmp(opType,"Replicate2F")==0 ||
3844 strcmp(opType,"Replicate2D")==0 ||
3845 0 /* 0 to line up columns nicely */ )
3846 return 1;
3847 }
3848 return 0;
3849 }
3850
3851 bool MatchRule::is_ideal_unlock() const {
3852 if( !_opType ) return false;
3853 return !strcmp(_opType,"Unlock") || !strcmp(_opType,"FastUnlock");
3854 }
3855
3856
3857 bool MatchRule::is_ideal_call_leaf() const {
3858 if( !_opType ) return false;
3859 return !strcmp(_opType,"CallLeaf") ||
3860 !strcmp(_opType,"CallLeafNoFP");
3861 }
3862
3863
3864 bool MatchRule::is_ideal_if() const {
3865 if( !_opType ) return false;
3866 return
3867 !strcmp(_opType,"If" ) ||
3868 !strcmp(_opType,"CountedLoopEnd");
3869 }
3870
3871 bool MatchRule::is_ideal_fastlock() const {
3872 if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) {
3873 return (strcmp(_rChild->_opType,"FastLock") == 0);
3874 }
3875 return false;
3876 }
3877
3878 bool MatchRule::is_ideal_membar() const {
3879 if( !_opType ) return false;
3880 return
3881 !strcmp(_opType,"MemBarAcquire" ) ||
3882 !strcmp(_opType,"MemBarRelease" ) ||
3883 !strcmp(_opType,"MemBarVolatile" ) ||
3884 !strcmp(_opType,"MemBarCPUOrder" ) ;
3885 }
3886
3887 bool MatchRule::is_ideal_loadPC() const {
3888 if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) {
3889 return (strcmp(_rChild->_opType,"LoadPC") == 0);
3890 }
3891 return false;
3892 }
3893
3894 bool MatchRule::is_ideal_box() const {
3895 if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) {
3896 return (strcmp(_rChild->_opType,"Box") == 0);
3897 }
3898 return false;
3899 }
3900
3901 bool MatchRule::is_ideal_goto() const {
3902 bool ideal_goto = false;
3903
3904 if( _opType && (strcmp(_opType,"Goto") == 0) ) {
3905 ideal_goto = true;
3906 }
3907 return ideal_goto;
3908 }
3909
3910 bool MatchRule::is_ideal_jump() const {
3911 if( _opType ) {
3912 if( !strcmp(_opType,"Jump") )
3913 return true;
3914 }
3915 return false;
3916 }
3917
3918 bool MatchRule::is_ideal_bool() const {
3919 if( _opType ) {
3920 if( !strcmp(_opType,"Bool") )
3921 return true;
3922 }
3923 return false;
3924 }
3925
3926
3927 Form::DataType MatchRule::is_ideal_load() const {
3928 Form::DataType ideal_load = Form::none;
3929
3930 if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) {
3931 const char *opType = _rChild->_opType;
3932 ideal_load = is_load_from_memory(opType);
3933 }
3934
3935 return ideal_load;
3936 }
3937
3938
3939 Form::DataType MatchRule::is_ideal_store() const {
3940 Form::DataType ideal_store = Form::none;
3941
3942 if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) {
3943 const char *opType = _rChild->_opType;
3944 ideal_store = is_store_to_memory(opType);
3945 }
3946
3947 return ideal_store;
3948 }
3949
3950
3951 void MatchRule::dump() {
3952 output(stderr);
3953 }
3954
3955 void MatchRule::output(FILE *fp) {
3956 fprintf(fp,"MatchRule: ( %s",_name);
3957 if (_lChild) _lChild->output(fp);
3958 if (_rChild) _rChild->output(fp);
3959 fprintf(fp," )\n");
3960 fprintf(fp," nesting depth = %d\n", _depth);
3961 if (_result) fprintf(fp," Result Type = %s", _result);
3962 fprintf(fp,"\n");
3963 }
3964
3965 //------------------------------Attribute--------------------------------------
3966 Attribute::Attribute(char *id, char* val, int type)
3967 : _ident(id), _val(val), _atype(type) {
3968 }
3969 Attribute::~Attribute() {
3970 }
3971
3972 int Attribute::int_val(ArchDesc &ad) {
3973 // Make sure it is an integer constant:
3974 int result = 0;
3975 if (!_val || !ADLParser::is_int_token(_val, result)) {
3976 ad.syntax_err(0, "Attribute %s must have an integer value: %s",
3977 _ident, _val ? _val : "");
3978 }
3979 return result;
3980 }
3981
3982 void Attribute::dump() {
3983 output(stderr);
3984 } // Debug printer
3985
3986 // Write to output files
3987 void Attribute::output(FILE *fp) {
3988 fprintf(fp,"Attribute: %s %s\n", (_ident?_ident:""), (_val?_val:""));
3989 }
3990
3991 //------------------------------FormatRule----------------------------------
3992 FormatRule::FormatRule(char *temp)
3993 : _temp(temp) {
3994 }
3995 FormatRule::~FormatRule() {
3996 }
3997
3998 void FormatRule::dump() {
3999 output(stderr);
4000 }
4001
4002 // Write to output files
4003 void FormatRule::output(FILE *fp) {
4004 fprintf(fp,"\nFormat Rule: \n%s", (_temp?_temp:""));
4005 fprintf(fp,"\n");
4006 }