formssel.cpp revision 235:9c2ecc2ffb12
1/* 2 * Copyright 1998-2008 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----------------------------------- 30InstructForm::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 58InstructForm::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 91InstructForm::~InstructForm() { 92} 93 94InstructForm *InstructForm::is_instruction() const { 95 return (InstructForm*)this; 96} 97 98bool InstructForm::ideal_only() const { 99 return _ideal_only; 100} 101 102bool InstructForm::sets_result() const { 103 return (_matrule != NULL && _matrule->sets_result()); 104} 105 106bool 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 117bool 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 134uint 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? 148bool InstructForm::expands() const { 149 return ( _exprule != NULL ); 150} 151 152// This instruction has a peephole rule? 153Peephole *InstructForm::peepholes() const { 154 return _peephole; 155} 156 157// This instruction has a peephole rule? 158void 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 168const 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 188bool 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 206bool 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 221bool 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 232int 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. 237int 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. 253int 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 266int 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 289bool InstructForm::is_ideal_unlock() const { 290 return _matrule ? _matrule->is_ideal_unlock() : false; 291} 292 293bool 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 298bool 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 305bool 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 312bool 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 319bool 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 326bool 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 333bool 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 340bool 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' 348bool 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 356bool 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 370bool 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 376bool 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 382bool InstructForm::is_ideal_nop() const { 383 return _ident && _ident[0] == 'N' && _ident[1] == 'o' && _ident[2] == 'p' && _ident[3] == '_'; 384} 385 386bool 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 393Form::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 417Form::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 424Form::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 432uint 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 464Form::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} 469Form::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 476Form::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 505bool 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 516bool 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 569bool 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 611bool 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 621int 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 725bool 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. 743const 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. 753uint 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. 769uint 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 778uint 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 786uint 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'. 795const 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 804uint 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 836void 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. 937int InstructForm::operand_position(const char *name, int usedef) { 938 return unique_opnds_idx(_components.operand_position(name, usedef)); 939} 940 941int 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. 946int InstructForm::label_position() { 947 return unique_opnds_idx(_components.label_position()); 948} 949 950int InstructForm::method_position() { 951 return unique_opnds_idx(_components.method_position()); 952} 953 954// Return number of relocation entries needed for this instruction. 955uint 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 1023extern bool is_def(int usedef); 1024 1025// Return the result of reducing an instruction 1026const 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 1042const 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 1048const 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 1055const 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 1096bool 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' 1117bool 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' 1163bool 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 1184void 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. 1221void 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 1291void 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// --------------------------- 1324bool InstructForm::verify() { 1325 // !!!!! !!!!! 1326 // Check that a "label" operand occurs last in the operand list, if present 1327 return true; 1328} 1329 1330void InstructForm::dump() { 1331 output(stderr); 1332} 1333 1334void 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 1351void MachNodeForm::dump() { 1352 output(stderr); 1353} 1354 1355void 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. 1363Predicate *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 1411EncodeForm::EncodeForm() 1412 : _encClass(cmpstr,hashstr, Form::arena) { 1413} 1414EncodeForm::~EncodeForm() { 1415} 1416 1417// record a new register class 1418EncClass *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 1426EncClass *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 1434const 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 1447const char *EncodeForm::encClassPrototype(const char *className) { 1448 assert( className != NULL, "Encode class name must be non NULL."); 1449 1450 return className; 1451} 1452 1453void EncodeForm::dump() { // Debug printer 1454 output(stderr); 1455} 1456 1457void 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--------------------------------------- 1467EncClass::EncClass(const char *name) 1468 : _localNames(cmpstr,hashstr, Form::arena), _name(name) { 1469} 1470EncClass::~EncClass() { 1471} 1472 1473// Add a parameter <type,name> pair 1474void 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 1480bool EncClass::check_parameter_types(FormDict &globals) { 1481 // !!!!! 1482 return false; 1483} 1484 1485// Add the decomposed "code" sections of an encoding's code-block 1486void EncClass::add_code(const char *code) { 1487 _code.addName(code); 1488} 1489 1490// Add the decomposed "replacement variables" of an encoding's code-block 1491void 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 1497int 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 1511bool EncClass::verify() { 1512 // 1!!!! 1513 // Check that each replacement variable, '$name' in architecture description 1514 // is actually a local variable for this encode class, or a reserved name 1515 // "primary, secondary, tertiary" 1516 return true; 1517} 1518 1519void EncClass::dump() { 1520 output(stderr); 1521} 1522 1523// Write info to output files 1524void EncClass::output(FILE *fp) { 1525 fprintf(fp,"EncClass: %s", (_name ? _name : "")); 1526 1527 // Output the parameter list 1528 _parameter_type.reset(); 1529 _parameter_name.reset(); 1530 const char *type = _parameter_type.iter(); 1531 const char *name = _parameter_name.iter(); 1532 fprintf(fp, " ( "); 1533 for ( ; (type != NULL) && (name != NULL); 1534 (type = _parameter_type.iter()), (name = _parameter_name.iter()) ) { 1535 fprintf(fp, " %s %s,", type, name); 1536 } 1537 fprintf(fp, " ) "); 1538 1539 // Output the code block 1540 _code.reset(); 1541 _rep_vars.reset(); 1542 const char *code; 1543 while ( (code = _code.iter()) != NULL ) { 1544 if ( _code.is_signal(code) ) { 1545 // A replacement variable 1546 const char *rep_var = _rep_vars.iter(); 1547 fprintf(fp,"($%s)", rep_var); 1548 } else { 1549 // A section of code 1550 fprintf(fp,"%s", code); 1551 } 1552 } 1553 1554} 1555 1556//------------------------------Opcode----------------------------------------- 1557Opcode::Opcode(char *primary, char *secondary, char *tertiary) 1558 : _primary(primary), _secondary(secondary), _tertiary(tertiary) { 1559} 1560 1561Opcode::~Opcode() { 1562} 1563 1564Opcode::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 1577void 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 1605void Opcode::dump() { 1606 output(stderr); 1607} 1608 1609// Write info to output files 1610void 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-------------------------------------- 1617InsEncode::InsEncode() { 1618} 1619InsEncode::~InsEncode() { 1620} 1621 1622// Add "encode class name" and its parameters 1623NameAndList *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 1634void InsEncode::reset() { 1635 _encoding.reset(); 1636 // _parameter.reset(); 1637} 1638const 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 1643const 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 1652void InsEncode::dump() { 1653 output(stderr); 1654} 1655 1656// Write info to output files 1657void 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----------------------------------------- 1685static 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 1697Effect::Effect(const char *name) : _name(name), _use_def(effect_lookup(name)) { 1698 _ftype = Form::EFF; 1699} 1700Effect::~Effect() { 1701} 1702 1703// Dynamic type check 1704Effect *Effect::is_effect() const { 1705 return (Effect*)this; 1706} 1707 1708 1709// True if this component is equal to the parameter. 1710bool 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. 1714bool Effect::isa(int use_def_kill_enum) const { 1715 return (_use_def & use_def_kill_enum) == use_def_kill_enum; 1716} 1717 1718void Effect::dump() { 1719 output(stderr); 1720} 1721 1722void Effect::output(FILE *fp) { // Write info to output files 1723 fprintf(fp,"Effect: %s\n", (_name?_name:"")); 1724} 1725 1726//------------------------------ExpandRule------------------------------------- 1727ExpandRule::ExpandRule() : _expand_instrs(), 1728 _newopconst(cmpstr, hashstr, Form::arena) { 1729 _ftype = Form::EXP; 1730} 1731 1732ExpandRule::~ExpandRule() { // Destructor 1733} 1734 1735void ExpandRule::add_instruction(NameAndList *instruction_name_and_operand_list) { 1736 _expand_instrs.addName((char*)instruction_name_and_operand_list); 1737} 1738 1739void ExpandRule::reset_instructions() { 1740 _expand_instrs.reset(); 1741} 1742 1743NameAndList* ExpandRule::iter_instructions() { 1744 return (NameAndList*)_expand_instrs.iter(); 1745} 1746 1747 1748void ExpandRule::dump() { 1749 output(stderr); 1750} 1751 1752void 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------------------------------------ 1771RewriteRule::RewriteRule(char* params, char* block) 1772 : _tempParams(params), _tempBlock(block) { }; // Constructor 1773RewriteRule::~RewriteRule() { // Destructor 1774} 1775 1776void RewriteRule::dump() { 1777 output(stderr); 1778} 1779 1780void 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----------------------------------- 1789MachNodeForm::MachNodeForm(char *id) 1790 : _ident(id) { 1791} 1792 1793MachNodeForm::~MachNodeForm() { 1794} 1795 1796MachNodeForm *MachNodeForm::is_machnode() const { 1797 return (MachNodeForm*)this; 1798} 1799 1800//==============================Operand Classes================================ 1801//------------------------------OpClassForm------------------------------------ 1802OpClassForm::OpClassForm(const char* id) : _ident(id) { 1803 _ftype = Form::OPCLASS; 1804} 1805 1806OpClassForm::~OpClassForm() { 1807} 1808 1809bool OpClassForm::ideal_only() const { return 0; } 1810 1811OpClassForm *OpClassForm::is_opclass() const { 1812 return (OpClassForm*)this; 1813} 1814 1815Form::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 1838bool 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 1854void OpClassForm::dump() { 1855 output(stderr); 1856} 1857 1858void 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------------------------------------ 1871OperandForm::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} 1884OperandForm::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} 1897OperandForm::~OperandForm() { 1898} 1899 1900 1901OperandForm *OperandForm::is_operand() const { 1902 return (OperandForm*)this; 1903} 1904 1905bool OperandForm::ideal_only() const { 1906 return _ideal_only; 1907} 1908 1909Form::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 1916bool 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. 1923const 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 1933uint 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 1941uint 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 1949uint 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 1957uint 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 1964uint 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 1994bool 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 2000bool 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' 2007bool 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 2014Form::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 2030const 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. 2072const 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 2089RegClass* OperandForm::get_RegClass() const { 2090 if (_interface && !_interface->is_RegInterface()) return NULL; 2091 return globalAD->get_registers()->getRegClass(constrained_reg_class()); 2092} 2093 2094 2095bool 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. 2117bool 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. 2124const 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'. 2139const 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 2179void 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 2195int 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. 2202int 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" 2230int 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. 2240int 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 2267const 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 2272const char *OperandForm::reduce_right(FormDict &globals) const { 2273 return ( _matrule ? _matrule->reduce_right(globals) : NULL ); 2274} 2275 2276// Similar for left 2277const 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. 2285void 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, 2317void 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, 2345void 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 2371void 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. 2385OperandForm *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 2424Form::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 2431Form::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 2438bool 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 2448void 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 2466void OperandForm::dump() { 2467 output(stderr); 2468} 2469 2470void 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------------------------------------- 2482Constraint::Constraint(const char *func, const char *arg) 2483 : _func(func), _arg(arg) { 2484} 2485Constraint::~Constraint() { /* not owner of char* */ 2486} 2487 2488bool Constraint::stack_slots_only() const { 2489 return strcmp(_func, "ALLOC_IN_RC") == 0 2490 && strcmp(_arg, "stack_slots") == 0; 2491} 2492 2493void Constraint::dump() { 2494 output(stderr); 2495} 2496 2497void 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-------------------------------------- 2503Predicate::Predicate(char *pr) 2504 : _pred(pr) { 2505} 2506Predicate::~Predicate() { 2507} 2508 2509void Predicate::dump() { 2510 output(stderr); 2511} 2512 2513void Predicate::output(FILE *fp) { 2514 fprintf(fp,"Predicate"); // Write to output files 2515} 2516//------------------------------Interface-------------------------------------- 2517Interface::Interface(const char *name) : _name(name) { 2518} 2519Interface::~Interface() { 2520} 2521 2522Form::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 2532RegInterface *Interface::is_RegInterface() { 2533 if ( strcmp(_name,"REG_INTER") != 0 ) 2534 return NULL; 2535 return (RegInterface*)this; 2536} 2537MemInterface *Interface::is_MemInterface() { 2538 if ( strcmp(_name,"MEMORY_INTER") != 0 ) return NULL; 2539 return (MemInterface*)this; 2540} 2541ConstInterface *Interface::is_ConstInterface() { 2542 if ( strcmp(_name,"CONST_INTER") != 0 ) return NULL; 2543 return (ConstInterface*)this; 2544} 2545CondInterface *Interface::is_CondInterface() { 2546 if ( strcmp(_name,"COND_INTER") != 0 ) return NULL; 2547 return (CondInterface*)this; 2548} 2549 2550 2551void Interface::dump() { 2552 output(stderr); 2553} 2554 2555// Write info to output files 2556void Interface::output(FILE *fp) { 2557 fprintf(fp,"Interface: %s\n", (_name ? _name : "") ); 2558} 2559 2560//------------------------------RegInterface----------------------------------- 2561RegInterface::RegInterface() : Interface("REG_INTER") { 2562} 2563RegInterface::~RegInterface() { 2564} 2565 2566void RegInterface::dump() { 2567 output(stderr); 2568} 2569 2570// Write info to output files 2571void RegInterface::output(FILE *fp) { 2572 Interface::output(fp); 2573} 2574 2575//------------------------------ConstInterface--------------------------------- 2576ConstInterface::ConstInterface() : Interface("CONST_INTER") { 2577} 2578ConstInterface::~ConstInterface() { 2579} 2580 2581void ConstInterface::dump() { 2582 output(stderr); 2583} 2584 2585// Write info to output files 2586void ConstInterface::output(FILE *fp) { 2587 Interface::output(fp); 2588} 2589 2590//------------------------------MemInterface----------------------------------- 2591MemInterface::MemInterface(char *base, char *index, char *scale, char *disp) 2592 : Interface("MEMORY_INTER"), _base(base), _index(index), _scale(scale), _disp(disp) { 2593} 2594MemInterface::~MemInterface() { 2595 // not owner of any character arrays 2596} 2597 2598void MemInterface::dump() { 2599 output(stderr); 2600} 2601 2602// Write info to output files 2603void 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---------------------------------- 2613CondInterface::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} 2622CondInterface::~CondInterface() { 2623 // not owner of any character arrays 2624} 2625 2626void CondInterface::dump() { 2627 output(stderr); 2628} 2629 2630// Write info to output files 2631void 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---------------------------------- 2643ConstructRule::ConstructRule(char *cnstr) 2644 : _construct(cnstr) { 2645} 2646ConstructRule::~ConstructRule() { 2647} 2648 2649void ConstructRule::dump() { 2650 output(stderr); 2651} 2652 2653void ConstructRule::output(FILE *fp) { 2654 fprintf(fp,"\nConstruct Rule\n"); // Write to output files 2655} 2656 2657 2658//==============================Shared Forms=================================== 2659//------------------------------AttributeForm---------------------------------- 2660int AttributeForm::_insId = 0; // start counter at 0 2661int AttributeForm::_opId = 0; // start counter at 0 2662const char* AttributeForm::_ins_cost = "ins_cost"; // required name 2663const char* AttributeForm::_ins_pc_relative = "ins_pc_relative"; 2664const char* AttributeForm::_op_cost = "op_cost"; // required name 2665 2666AttributeForm::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} 2676AttributeForm::~AttributeForm() { 2677} 2678 2679// Dynamic type check 2680AttributeForm *AttributeForm::is_attribute() const { 2681 return (AttributeForm*)this; 2682} 2683 2684 2685// inlined // int AttributeForm::type() { return id;} 2686 2687void AttributeForm::dump() { 2688 output(stderr); 2689} 2690 2691void 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-------------------------------------- 2703Component::Component(const char *name, const char *type, int usedef) 2704 : _name(name), _type(type), _usedef(usedef) { 2705 _ftype = Form::COMP; 2706} 2707Component::~Component() { 2708} 2709 2710// True if this component is equal to the parameter. 2711bool 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. 2715bool 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 2720int 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 2727const 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 2736void Component::dump() { 2737 output(stderr); 2738} 2739 2740void 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--------------------------------- 2759ComponentList::ComponentList() : NameList(), _matchcnt(0) { 2760} 2761ComponentList::~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 2769void ComponentList::insert(Component *component, bool mflag) { 2770 NameList::addName((char *)component); 2771 if(mflag) _matchcnt++; 2772} 2773void 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} 2778Component *ComponentList::current() { return (Component*)NameList::current(); } 2779Component *ComponentList::iter() { return (Component*)NameList::iter(); } 2780Component *ComponentList::match_iter() { 2781 if(_iter < _matchcnt) return (Component*)NameList::iter(); 2782 return NULL; 2783} 2784Component *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 2798void ComponentList::reset() { NameList::reset(); } 2799int ComponentList::count() { return NameList::count(); } 2800 2801Component *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 2817const 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. 2830int 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, ... 2848int 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 2898int 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 2920int 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 2928int 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 2951int 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 2974void ComponentList::dump() { output(stderr); } 2975 2976void 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-------------------------------------- 2987MatchNode::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 2996MatchNode::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 3003MatchNode::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 3020MatchNode::~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 3026bool 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. 3040void 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. 3071bool 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. 3137uint 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 3155uint 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. 3172uint MatchNode::num_const_ptrs(FormDict &globals) const { 3173 return num_consts( globals, Form::idealP ); 3174} 3175 3176bool MatchNode::sets_result() const { 3177 return ( (strcmp(_name,"Set") == 0) ? true : false ); 3178} 3179 3180const 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 3198const 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. 3226void 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'. 3240int 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 3263void 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 3291void MatchNode::dump() { 3292 output(stderr); 3293} 3294 3295void 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 3307int 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. 3349int 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 3355int 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------------------------------------ 3370int 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-------------------------------------- 3399bool 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 3411int 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 3489int 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. 3529bool 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. 3565bool 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. 3580void 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. 3621void 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. 3645void 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-------------------------------------- 3664MatchRule::MatchRule(ArchDesc &ad) 3665 : MatchNode(ad), _depth(0), _construct(NULL), _numchilds(0) { 3666 _next = NULL; 3667} 3668 3669MatchRule::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 3675MatchRule::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} 3686MatchRule::~MatchRule() { 3687} 3688 3689// Recursive call collecting info on top-level operands, not transitive. 3690// Implementation does not modify state of internal structures. 3691void 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 3702bool 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 3711bool 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 3732Form::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 3746bool 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 3768int 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 3798int 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 3851bool MatchRule::is_ideal_unlock() const { 3852 if( !_opType ) return false; 3853 return !strcmp(_opType,"Unlock") || !strcmp(_opType,"FastUnlock"); 3854} 3855 3856 3857bool MatchRule::is_ideal_call_leaf() const { 3858 if( !_opType ) return false; 3859 return !strcmp(_opType,"CallLeaf") || 3860 !strcmp(_opType,"CallLeafNoFP"); 3861} 3862 3863 3864bool MatchRule::is_ideal_if() const { 3865 if( !_opType ) return false; 3866 return 3867 !strcmp(_opType,"If" ) || 3868 !strcmp(_opType,"CountedLoopEnd"); 3869} 3870 3871bool 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 3878bool 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 3887bool 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 3894bool 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 3901bool 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 3910bool MatchRule::is_ideal_jump() const { 3911 if( _opType ) { 3912 if( !strcmp(_opType,"Jump") ) 3913 return true; 3914 } 3915 return false; 3916} 3917 3918bool MatchRule::is_ideal_bool() const { 3919 if( _opType ) { 3920 if( !strcmp(_opType,"Bool") ) 3921 return true; 3922 } 3923 return false; 3924} 3925 3926 3927Form::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 3939Form::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 3951void MatchRule::dump() { 3952 output(stderr); 3953} 3954 3955void 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-------------------------------------- 3966Attribute::Attribute(char *id, char* val, int type) 3967 : _ident(id), _val(val), _atype(type) { 3968} 3969Attribute::~Attribute() { 3970} 3971 3972int 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 3982void Attribute::dump() { 3983 output(stderr); 3984} // Debug printer 3985 3986// Write to output files 3987void Attribute::output(FILE *fp) { 3988 fprintf(fp,"Attribute: %s %s\n", (_ident?_ident:""), (_val?_val:"")); 3989} 3990 3991//------------------------------FormatRule---------------------------------- 3992FormatRule::FormatRule(char *temp) 3993 : _temp(temp) { 3994} 3995FormatRule::~FormatRule() { 3996} 3997 3998void FormatRule::dump() { 3999 output(stderr); 4000} 4001 4002// Write to output files 4003void FormatRule::output(FILE *fp) { 4004 fprintf(fp,"\nFormat Rule: \n%s", (_temp?_temp:"")); 4005 fprintf(fp,"\n"); 4006} 4007