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comparison src/share/vm/adlc/formsopt.cpp @ 0:a61af66fc99e jdk7-b24

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1 /*
2 * Copyright 1998-2006 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 //==============================Register Allocation============================
29 int RegisterForm::_reg_ctr = 0;
30
31 //------------------------------RegisterForm-----------------------------------
32 // Constructor
33 RegisterForm::RegisterForm()
34 : _regDef(cmpstr,hashstr, Form::arena),
35 _regClass(cmpstr,hashstr, Form::arena),
36 _allocClass(cmpstr,hashstr, Form::arena) {
37 }
38 RegisterForm::~RegisterForm() {
39 }
40
41 // record a new register definition
42 void RegisterForm::addRegDef(char *name, char *callingConv, char *c_conv,
43 char *idealtype, char *encoding, char* concrete) {
44 RegDef *regDef = new RegDef(name, callingConv, c_conv, idealtype, encoding, concrete);
45 _rdefs.addName(name);
46 _regDef.Insert(name,regDef);
47 }
48
49 // record a new register class
50 RegClass *RegisterForm::addRegClass(const char *className) {
51 RegClass *regClass = new RegClass(className);
52 _rclasses.addName(className);
53 _regClass.Insert(className,regClass);
54 return regClass;
55 }
56
57 // record a new register class
58 AllocClass *RegisterForm::addAllocClass(char *className) {
59 AllocClass *allocClass = new AllocClass(className);
60 _aclasses.addName(className);
61 _allocClass.Insert(className,allocClass);
62 return allocClass;
63 }
64
65 // Called after parsing the Register block. Record the register class
66 // for spill-slots/regs.
67 void RegisterForm::addSpillRegClass() {
68 // Stack slots start at the next available even register number.
69 _reg_ctr = (_reg_ctr+1) & ~1;
70 const char *rc_name = "stack_slots";
71 RegClass *reg_class = new RegClass(rc_name);
72 reg_class->_stack_or_reg = true;
73 _rclasses.addName(rc_name);
74 _regClass.Insert(rc_name,reg_class);
75 }
76
77
78 // Provide iteration over all register definitions
79 // in the order used by the register allocator
80 void RegisterForm::reset_RegDefs() {
81 _current_ac = NULL;
82 _aclasses.reset();
83 }
84
85 RegDef *RegisterForm::iter_RegDefs() {
86 // Check if we need to get the next AllocClass
87 if ( _current_ac == NULL ) {
88 const char *ac_name = _aclasses.iter();
89 if( ac_name == NULL ) return NULL; // No more allocation classes
90 _current_ac = (AllocClass*)_allocClass[ac_name];
91 _current_ac->_regDefs.reset();
92 assert( _current_ac != NULL, "Name must match an allocation class");
93 }
94
95 const char *rd_name = _current_ac->_regDefs.iter();
96 if( rd_name == NULL ) {
97 // At end of this allocation class, check the next
98 _current_ac = NULL;
99 return iter_RegDefs();
100 }
101 RegDef *reg_def = (RegDef*)_current_ac->_regDef[rd_name];
102 assert( reg_def != NULL, "Name must match a register definition");
103 return reg_def;
104 }
105
106 // return the register definition with name 'regName'
107 RegDef *RegisterForm::getRegDef(const char *regName) {
108 RegDef *regDef = (RegDef*)_regDef[regName];
109 return regDef;
110 }
111
112 // return the register class with name 'className'
113 RegClass *RegisterForm::getRegClass(const char *className) {
114 RegClass *regClass = (RegClass*)_regClass[className];
115 return regClass;
116 }
117
118
119 // Check that register classes are compatible with chunks
120 bool RegisterForm::verify() {
121 bool valid = true;
122
123 // Verify Register Classes
124 // check that each register class contains registers from one chunk
125 const char *rc_name = NULL;
126 _rclasses.reset();
127 while ( (rc_name = _rclasses.iter()) != NULL ) {
128 // Check the chunk value for all registers in this class
129 RegClass *reg_class = getRegClass(rc_name);
130 assert( reg_class != NULL, "InternalError() no matching register class");
131 } // end of RegClasses
132
133 // Verify that every register has been placed into an allocation class
134 RegDef *reg_def = NULL;
135 reset_RegDefs();
136 uint num_register_zero = 0;
137 while ( (reg_def = iter_RegDefs()) != NULL ) {
138 if( reg_def->register_num() == 0 ) ++num_register_zero;
139 }
140 if( num_register_zero > 1 ) {
141 fprintf(stderr,
142 "ERROR: More than one register has been assigned register-number 0.\n"
143 "Probably because a register has not been entered into an allocation class.\n");
144 }
145
146 return valid;
147 }
148
149 // Compute RegMask size
150 int RegisterForm::RegMask_Size() {
151 // Need at least this many words
152 int words_for_regs = (_reg_ctr + 31)>>5;
153 // Add a few for incoming & outgoing arguments to calls.
154 // Round up to the next doubleword size.
155 return (words_for_regs + 2 + 1) & ~1;
156 }
157
158 void RegisterForm::dump() { // Debug printer
159 output(stderr);
160 }
161
162 void RegisterForm::output(FILE *fp) { // Write info to output files
163 const char *name;
164 fprintf(fp,"\n");
165 fprintf(fp,"-------------------- Dump RegisterForm --------------------\n");
166 for(_rdefs.reset(); (name = _rdefs.iter()) != NULL;) {
167 ((RegDef*)_regDef[name])->output(fp);
168 }
169 fprintf(fp,"\n");
170 for (_rclasses.reset(); (name = _rclasses.iter()) != NULL;) {
171 ((RegClass*)_regClass[name])->output(fp);
172 }
173 fprintf(fp,"\n");
174 for (_aclasses.reset(); (name = _aclasses.iter()) != NULL;) {
175 ((AllocClass*)_allocClass[name])->output(fp);
176 }
177 fprintf(fp,"-------------------- end RegisterForm --------------------\n");
178 }
179
180 //------------------------------RegDef-----------------------------------------
181 // Constructor
182 RegDef::RegDef(char *regname, char *callconv, char *c_conv, char * idealtype, char * encode, char * concrete)
183 : _regname(regname), _callconv(callconv), _c_conv(c_conv),
184 _idealtype(idealtype),
185 _register_encode(encode),
186 _concrete(concrete),
187 _register_num(0) {
188
189 // Chunk and register mask are determined by the register number
190 // _register_num is set when registers are added to an allocation class
191 }
192 RegDef::~RegDef() { // Destructor
193 }
194
195 void RegDef::set_register_num(uint32 register_num) {
196 _register_num = register_num;
197 }
198
199 // Bit pattern used for generating machine code
200 const char* RegDef::register_encode() const {
201 return _register_encode;
202 }
203
204 // Register number used in machine-independent code
205 uint32 RegDef::register_num() const {
206 return _register_num;
207 }
208
209 void RegDef::dump() {
210 output(stderr);
211 }
212
213 void RegDef::output(FILE *fp) { // Write info to output files
214 fprintf(fp,"RegDef: %s (%s) encode as %s using number %d\n",
215 _regname, (_callconv?_callconv:""), _register_encode, _register_num);
216 fprintf(fp,"\n");
217 }
218
219
220 //------------------------------RegClass---------------------------------------
221 // Construct a register class into which registers will be inserted
222 RegClass::RegClass(const char *classid) : _stack_or_reg(false), _classid(classid), _regDef(cmpstr,hashstr, Form::arena) {
223 }
224
225 // record a register in this class
226 void RegClass::addReg(RegDef *regDef) {
227 _regDefs.addName(regDef->_regname);
228 _regDef.Insert((void*)regDef->_regname, regDef);
229 }
230
231 // Number of registers in class
232 uint RegClass::size() const {
233 return _regDef.Size();
234 }
235
236 const RegDef *RegClass::get_RegDef(const char *rd_name) const {
237 return (const RegDef*)_regDef[rd_name];
238 }
239
240 void RegClass::reset() {
241 _regDefs.reset();
242 }
243
244 const char *RegClass::rd_name_iter() {
245 return _regDefs.iter();
246 }
247
248 RegDef *RegClass::RegDef_iter() {
249 const char *rd_name = rd_name_iter();
250 RegDef *reg_def = rd_name ? (RegDef*)_regDef[rd_name] : NULL;
251 return reg_def;
252 }
253
254 const RegDef* RegClass::find_first_elem() {
255 const RegDef* first = NULL;
256 const RegDef* def = NULL;
257
258 reset();
259 while ((def = RegDef_iter()) != NULL) {
260 if (first == NULL || def->register_num() < first->register_num()) {
261 first = def;
262 }
263 }
264
265 assert(first != NULL, "empty mask?");
266 return first;;
267 }
268
269 // Collect all the registers in this register-word. One bit per register.
270 int RegClass::regs_in_word( int wordnum, bool stack_also ) {
271 int word = 0;
272 const char *name;
273 for(_regDefs.reset(); (name = _regDefs.iter()) != NULL;) {
274 int rnum = ((RegDef*)_regDef[name])->register_num();
275 if( (rnum >> 5) == wordnum )
276 word |= (1L<<(rnum&31));
277 }
278 if( stack_also ) {
279 // Now also collect stack bits
280 for( int i = 0; i < 32; i++ )
281 if( wordnum*32+i >= RegisterForm::_reg_ctr )
282 word |= (1L<<i);
283 }
284
285 return word;
286 }
287
288 void RegClass::dump() {
289 output(stderr);
290 }
291
292 void RegClass::output(FILE *fp) { // Write info to output files
293 fprintf(fp,"RegClass: %s\n",_classid);
294 const char *name;
295 for(_regDefs.reset(); (name = _regDefs.iter()) != NULL;) {
296 ((RegDef*)_regDef[name])->output(fp);
297 }
298 fprintf(fp,"--- done with entries for reg_class %s\n\n",_classid);
299 }
300
301
302 //------------------------------AllocClass-------------------------------------
303 AllocClass::AllocClass(char *classid) : _classid(classid), _regDef(cmpstr,hashstr, Form::arena) {
304 }
305
306 // record a register in this class
307 void AllocClass::addReg(RegDef *regDef) {
308 assert( regDef != NULL, "Can not add a NULL to an allocation class");
309 regDef->set_register_num( RegisterForm::_reg_ctr++ );
310 // Add regDef to this allocation class
311 _regDefs.addName(regDef->_regname);
312 _regDef.Insert((void*)regDef->_regname, regDef);
313 }
314
315 void AllocClass::dump() {
316 output(stderr);
317 }
318
319 void AllocClass::output(FILE *fp) { // Write info to output files
320 fprintf(fp,"AllocClass: %s \n",_classid);
321 const char *name;
322 for(_regDefs.reset(); (name = _regDefs.iter()) != NULL;) {
323 ((RegDef*)_regDef[name])->output(fp);
324 }
325 fprintf(fp,"--- done with entries for alloc_class %s\n\n",_classid);
326 }
327
328 //==============================Frame Handling=================================
329 //------------------------------FrameForm--------------------------------------
330 FrameForm::FrameForm() {
331 _frame_pointer = NULL;
332 _c_frame_pointer = NULL;
333 _alignment = NULL;
334 _return_addr = NULL;
335 _c_return_addr = NULL;
336 _in_preserve_slots = NULL;
337 _varargs_C_out_slots_killed = NULL;
338 _calling_convention = NULL;
339 _c_calling_convention = NULL;
340 _return_value = NULL;
341 _c_return_value = NULL;
342 _interpreter_frame_pointer_reg = NULL;
343 }
344
345 FrameForm::~FrameForm() {
346 }
347
348 void FrameForm::dump() {
349 output(stderr);
350 }
351
352 void FrameForm::output(FILE *fp) { // Write info to output files
353 fprintf(fp,"\nFrame:\n");
354 }
355
356 //==============================Scheduling=====================================
357 //------------------------------PipelineForm-----------------------------------
358 PipelineForm::PipelineForm()
359 : _reslist ()
360 , _resdict (cmpstr, hashstr, Form::arena)
361 , _classdict (cmpstr, hashstr, Form::arena)
362 , _rescount (0)
363 , _maxcycleused (0)
364 , _stages ()
365 , _stagecnt (0)
366 , _classlist ()
367 , _classcnt (0)
368 , _noplist ()
369 , _nopcnt (0)
370 , _variableSizeInstrs (false)
371 , _branchHasDelaySlot (false)
372 , _maxInstrsPerBundle (0)
373 , _maxBundlesPerCycle (1)
374 , _instrUnitSize (0)
375 , _bundleUnitSize (0)
376 , _instrFetchUnitSize (0)
377 , _instrFetchUnits (0) {
378 }
379 PipelineForm::~PipelineForm() {
380 }
381
382 void PipelineForm::dump() {
383 output(stderr);
384 }
385
386 void PipelineForm::output(FILE *fp) { // Write info to output files
387 const char *res;
388 const char *stage;
389 const char *cls;
390 const char *nop;
391 int count = 0;
392
393 fprintf(fp,"\nPipeline:");
394 if (_variableSizeInstrs)
395 if (_instrUnitSize > 0)
396 fprintf(fp," variable-sized instructions in %d byte units", _instrUnitSize);
397 else
398 fprintf(fp," variable-sized instructions");
399 else
400 if (_instrUnitSize > 0)
401 fprintf(fp," fixed-sized instructions of %d bytes", _instrUnitSize);
402 else if (_bundleUnitSize > 0)
403 fprintf(fp," fixed-sized bundles of %d bytes", _bundleUnitSize);
404 else
405 fprintf(fp," fixed-sized instructions");
406 if (_branchHasDelaySlot)
407 fprintf(fp,", branch has delay slot");
408 if (_maxInstrsPerBundle > 0)
409 fprintf(fp,", max of %d instruction%s in parallel",
410 _maxInstrsPerBundle, _maxInstrsPerBundle > 1 ? "s" : "");
411 if (_maxBundlesPerCycle > 0)
412 fprintf(fp,", max of %d bundle%s in parallel",
413 _maxBundlesPerCycle, _maxBundlesPerCycle > 1 ? "s" : "");
414 if (_instrFetchUnitSize > 0 && _instrFetchUnits)
415 fprintf(fp, ", fetch %d x % d bytes per cycle", _instrFetchUnits, _instrFetchUnitSize);
416
417 fprintf(fp,"\nResource:");
418 for ( _reslist.reset(); (res = _reslist.iter()) != NULL; )
419 fprintf(fp," %s(0x%08x)", res, _resdict[res]->is_resource()->mask());
420 fprintf(fp,"\n");
421
422 fprintf(fp,"\nDescription:\n");
423 for ( _stages.reset(); (stage = _stages.iter()) != NULL; )
424 fprintf(fp," %s(%d)", stage, count++);
425 fprintf(fp,"\n");
426
427 fprintf(fp,"\nClasses:\n");
428 for ( _classlist.reset(); (cls = _classlist.iter()) != NULL; )
429 _classdict[cls]->is_pipeclass()->output(fp);
430
431 fprintf(fp,"\nNop Instructions:");
432 for ( _noplist.reset(); (nop = _noplist.iter()) != NULL; )
433 fprintf(fp, " \"%s\"", nop);
434 fprintf(fp,"\n");
435 }
436
437
438 //------------------------------ResourceForm-----------------------------------
439 ResourceForm::ResourceForm(unsigned resmask)
440 : _resmask(resmask) {
441 }
442 ResourceForm::~ResourceForm() {
443 }
444
445 ResourceForm *ResourceForm::is_resource() const {
446 return (ResourceForm *)(this);
447 }
448
449 void ResourceForm::dump() {
450 output(stderr);
451 }
452
453 void ResourceForm::output(FILE *fp) { // Write info to output files
454 fprintf(fp, "resource: 0x%08x;\n", mask());
455 }
456
457
458 //------------------------------PipeClassOperandForm----------------------------------
459
460 void PipeClassOperandForm::dump() {
461 output(stderr);
462 }
463
464 void PipeClassOperandForm::output(FILE *fp) { // Write info to output files
465 fprintf(stderr,"PipeClassOperandForm: %s", _stage);
466 fflush(stderr);
467 if (_more_instrs > 0)
468 fprintf(stderr,"+%d", _more_instrs);
469 fprintf(stderr," (%s)\n", _iswrite ? "write" : "read");
470 fflush(stderr);
471 fprintf(fp,"PipeClassOperandForm: %s", _stage);
472 if (_more_instrs > 0)
473 fprintf(fp,"+%d", _more_instrs);
474 fprintf(fp," (%s)\n", _iswrite ? "write" : "read");
475 }
476
477
478 //------------------------------PipeClassResourceForm----------------------------------
479
480 void PipeClassResourceForm::dump() {
481 output(stderr);
482 }
483
484 void PipeClassResourceForm::output(FILE *fp) { // Write info to output files
485 fprintf(fp,"PipeClassResourceForm: %s at stage %s for %d cycles\n",
486 _resource, _stage, _cycles);
487 }
488
489
490 //------------------------------PipeClassForm----------------------------------
491 PipeClassForm::PipeClassForm(const char *id, int num)
492 : _ident(id)
493 , _num(num)
494 , _localNames(cmpstr, hashstr, Form::arena)
495 , _localUsage(cmpstr, hashstr, Form::arena)
496 , _has_fixed_latency(0)
497 , _fixed_latency(0)
498 , _instruction_count(0)
499 , _has_multiple_bundles(false)
500 , _has_branch_delay_slot(false)
501 , _force_serialization(false)
502 , _may_have_no_code(false) {
503 }
504
505 PipeClassForm::~PipeClassForm() {
506 }
507
508 PipeClassForm *PipeClassForm::is_pipeclass() const {
509 return (PipeClassForm *)(this);
510 }
511
512 void PipeClassForm::dump() {
513 output(stderr);
514 }
515
516 void PipeClassForm::output(FILE *fp) { // Write info to output files
517 fprintf(fp,"PipeClassForm: #%03d", _num);
518 if (_ident)
519 fprintf(fp," \"%s\":", _ident);
520 if (_has_fixed_latency)
521 fprintf(fp," latency %d", _fixed_latency);
522 if (_force_serialization)
523 fprintf(fp, ", force serialization");
524 if (_may_have_no_code)
525 fprintf(fp, ", may have no code");
526 fprintf(fp, ", %d instruction%s\n", InstructionCount(), InstructionCount() != 1 ? "s" : "");
527 }
528
529
530 //==============================Peephole Optimization==========================
531 int Peephole::_peephole_counter = 0;
532 //------------------------------Peephole---------------------------------------
533 Peephole::Peephole() : _match(NULL), _constraint(NULL), _replace(NULL), _next(NULL) {
534 _peephole_number = _peephole_counter++;
535 }
536 Peephole::~Peephole() {
537 }
538
539 // Append a peephole rule with the same root instruction
540 void Peephole::append_peephole(Peephole *next_peephole) {
541 if( _next == NULL ) {
542 _next = next_peephole;
543 } else {
544 _next->append_peephole( next_peephole );
545 }
546 }
547
548 // Store the components of this peephole rule
549 void Peephole::add_match(PeepMatch *match) {
550 assert( _match == NULL, "fatal()" );
551 _match = match;
552 }
553
554 void Peephole::append_constraint(PeepConstraint *next_constraint) {
555 if( _constraint == NULL ) {
556 _constraint = next_constraint;
557 } else {
558 _constraint->append( next_constraint );
559 }
560 }
561
562 void Peephole::add_replace(PeepReplace *replace) {
563 assert( _replace == NULL, "fatal()" );
564 _replace = replace;
565 }
566
567 // class Peephole accessor methods are in the declaration.
568
569
570 void Peephole::dump() {
571 output(stderr);
572 }
573
574 void Peephole::output(FILE *fp) { // Write info to output files
575 fprintf(fp,"Peephole:\n");
576 if( _match != NULL ) _match->output(fp);
577 if( _constraint != NULL ) _constraint->output(fp);
578 if( _replace != NULL ) _replace->output(fp);
579 // Output the next entry
580 if( _next ) _next->output(fp);
581 }
582
583 //------------------------------PeepMatch--------------------------------------
584 PeepMatch::PeepMatch(char *rule) : _max_position(0), _rule(rule) {
585 }
586 PeepMatch::~PeepMatch() {
587 }
588
589
590 // Insert info into the match-rule
591 void PeepMatch::add_instruction(int parent, int position, const char *name,
592 int input) {
593 if( position > _max_position ) _max_position = position;
594
595 _parent.addName((char *)parent);
596 _position.addName((char *)position);
597 _instrs.addName(name);
598 _input.addName((char *)input);
599 }
600
601 // Access info about instructions in the peep-match rule
602 int PeepMatch::max_position() {
603 return _max_position;
604 }
605
606 const char *PeepMatch::instruction_name(intptr_t position) {
607 return _instrs.name(position);
608 }
609
610 // Iterate through all info on matched instructions
611 void PeepMatch::reset() {
612 _parent.reset();
613 _position.reset();
614 _instrs.reset();
615 _input.reset();
616 }
617
618 void PeepMatch::next_instruction( intptr_t &parent, intptr_t &position, const char * &name, intptr_t &input ){
619 parent = (intptr_t)_parent.iter();
620 position = (intptr_t)_position.iter();
621 name = _instrs.iter();
622 input = (intptr_t)_input.iter();
623 }
624
625 // 'true' if current position in iteration is a placeholder, not matched.
626 bool PeepMatch::is_placeholder() {
627 return _instrs.current_is_signal();
628 }
629
630
631 void PeepMatch::dump() {
632 output(stderr);
633 }
634
635 void PeepMatch::output(FILE *fp) { // Write info to output files
636 fprintf(fp,"PeepMatch:\n");
637 }
638
639 //------------------------------PeepConstraint---------------------------------
640 PeepConstraint::PeepConstraint(intptr_t left_inst, char *left_op, char *relation,
641 intptr_t right_inst, char *right_op)
642 : _left_inst(left_inst), _left_op(left_op), _relation(relation),
643 _right_inst(right_inst), _right_op(right_op), _next(NULL) {}
644 PeepConstraint::~PeepConstraint() {
645 }
646
647 // Check if constraints use instruction at position
648 bool PeepConstraint::constrains_instruction(intptr_t position) {
649 // Check local instruction constraints
650 if( _left_inst == position ) return true;
651 if( _right_inst == position ) return true;
652
653 // Check remaining constraints in list
654 if( _next == NULL ) return false;
655 else return _next->constrains_instruction(position);
656 }
657
658 // Add another constraint
659 void PeepConstraint::append(PeepConstraint *next_constraint) {
660 if( _next == NULL ) {
661 _next = next_constraint;
662 } else {
663 _next->append( next_constraint );
664 }
665 }
666
667 // Access the next constraint in the list
668 PeepConstraint *PeepConstraint::next() {
669 return _next;
670 }
671
672
673 void PeepConstraint::dump() {
674 output(stderr);
675 }
676
677 void PeepConstraint::output(FILE *fp) { // Write info to output files
678 fprintf(fp,"PeepConstraint:\n");
679 }
680
681 //------------------------------PeepReplace------------------------------------
682 PeepReplace::PeepReplace(char *rule) : _rule(rule) {
683 }
684 PeepReplace::~PeepReplace() {
685 }
686
687 // Add contents of peepreplace
688 void PeepReplace::add_instruction(char *root) {
689 _instruction.addName(root);
690 _operand_inst_num.add_signal();
691 _operand_op_name.add_signal();
692 }
693 void PeepReplace::add_operand( int inst_num, char *inst_operand ) {
694 _instruction.add_signal();
695 _operand_inst_num.addName((char*)inst_num);
696 _operand_op_name.addName(inst_operand);
697 }
698
699 // Access contents of peepreplace
700 void PeepReplace::reset() {
701 _instruction.reset();
702 _operand_inst_num.reset();
703 _operand_op_name.reset();
704 }
705 void PeepReplace::next_instruction(const char * &inst){
706 inst = _instruction.iter();
707 intptr_t inst_num = (intptr_t)_operand_inst_num.iter();
708 const char *inst_operand = _operand_op_name.iter();
709 }
710 void PeepReplace::next_operand( intptr_t &inst_num, const char * &inst_operand ) {
711 const char *inst = _instruction.iter();
712 inst_num = (intptr_t)_operand_inst_num.iter();
713 inst_operand = _operand_op_name.iter();
714 }
715
716
717
718 void PeepReplace::dump() {
719 output(stderr);
720 }
721
722 void PeepReplace::output(FILE *fp) { // Write info to output files
723 fprintf(fp,"PeepReplace:\n");
724 }