1 /* 2 * Copyright (c) 1998, 2010, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * 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 |= (1 << (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 |= (1 << 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*) (intptr_t) parent); 596 _position.addName((char*) (intptr_t) position); 597 _instrs.addName(name); 598 _input.addName((char*) (intptr_t) 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(int 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(int &parent, int &position, const char* &name, int &input) { 619 parent = (int) (intptr_t) _parent.iter(); 620 position = (int) (intptr_t) _position.iter(); 621 name = _instrs.iter(); 622 input = (int) (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(int left_inst, char* left_op, char* relation, 641 int 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(int 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*) (intptr_t) 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 int inst_num = (int) (intptr_t) _operand_inst_num.iter(); 708 const char* inst_operand = _operand_op_name.iter(); 709 } 710 void PeepReplace::next_operand(int &inst_num, const char* &inst_operand) { 711 const char* inst = _instruction.iter(); 712 inst_num = (int) (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 }