1 /* 2 * Copyright (c) 1998, 2014, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 // FORMS.CPP - Definitions for ADL Parser Forms Classes 26 #include "adlc.hpp" 27 28 //==============================Instructions=================================== 29 //------------------------------InstructForm----------------------------------- 30 InstructForm::InstructForm(const char *id, bool ideal_only) 31 : _ident(id), _ideal_only(ideal_only), 32 _localNames(cmpstr, hashstr, Form::arena), 33 _effects(cmpstr, hashstr, Form::arena), 34 _is_mach_constant(false), 35 _needs_constant_base(false), 36 _has_call(false) 37 { 38 _ftype = Form::INS; 39 40 _matrule = NULL; 41 _insencode = NULL; 42 _constant = NULL; 43 _is_postalloc_expand = false; 44 _opcode = NULL; 45 _size = NULL; 46 _attribs = NULL; 47 _predicate = NULL; 48 _exprule = NULL; 49 _rewrule = NULL; 50 _format = NULL; 51 _peephole = NULL; 52 _ins_pipe = NULL; 53 _uniq_idx = NULL; 54 _num_uniq = 0; 55 _cisc_spill_operand = Not_cisc_spillable;// Which operand may cisc-spill 56 _cisc_spill_alternate = NULL; // possible cisc replacement 57 _cisc_reg_mask_name = NULL; 58 _is_cisc_alternate = false; 59 _is_short_branch = false; 60 _short_branch_form = NULL; 61 _alignment = 1; 62 } 63 64 InstructForm::InstructForm(const char *id, InstructForm *instr, MatchRule *rule) 65 : _ident(id), _ideal_only(false), 66 _localNames(instr->_localNames), 67 _effects(instr->_effects), 68 _is_mach_constant(false), 69 _needs_constant_base(false), 70 _has_call(false) 71 { 72 _ftype = Form::INS; 73 74 _matrule = rule; 75 _insencode = instr->_insencode; 76 _constant = instr->_constant; 77 _is_postalloc_expand = instr->_is_postalloc_expand; 78 _opcode = instr->_opcode; 79 _size = instr->_size; 80 _attribs = instr->_attribs; 81 _predicate = instr->_predicate; 82 _exprule = instr->_exprule; 83 _rewrule = instr->_rewrule; 84 _format = instr->_format; 85 _peephole = instr->_peephole; 86 _ins_pipe = instr->_ins_pipe; 87 _uniq_idx = instr->_uniq_idx; 88 _num_uniq = instr->_num_uniq; 89 _cisc_spill_operand = Not_cisc_spillable; // Which operand may cisc-spill 90 _cisc_spill_alternate = NULL; // possible cisc replacement 91 _cisc_reg_mask_name = NULL; 92 _is_cisc_alternate = false; 93 _is_short_branch = false; 94 _short_branch_form = NULL; 95 _alignment = 1; 96 // Copy parameters 97 const char *name; 98 instr->_parameters.reset(); 99 for (; (name = instr->_parameters.iter()) != NULL;) 100 _parameters.addName(name); 101 } 102 103 InstructForm::~InstructForm() { 104 } 105 106 InstructForm *InstructForm::is_instruction() const { 107 return (InstructForm*)this; 108 } 109 110 bool InstructForm::ideal_only() const { 111 return _ideal_only; 112 } 113 114 bool InstructForm::sets_result() const { 115 return (_matrule != NULL && _matrule->sets_result()); 116 } 117 118 bool InstructForm::needs_projections() { 119 _components.reset(); 120 for( Component *comp; (comp = _components.iter()) != NULL; ) { 121 if (comp->isa(Component::KILL)) { 122 return true; 123 } 124 } 125 return false; 126 } 127 128 129 bool InstructForm::has_temps() { 130 if (_matrule) { 131 // Examine each component to see if it is a TEMP 132 _components.reset(); 133 // Skip the first component, if already handled as (SET dst (...)) 134 Component *comp = NULL; 135 if (sets_result()) comp = _components.iter(); 136 while ((comp = _components.iter()) != NULL) { 137 if (comp->isa(Component::TEMP)) { 138 return true; 139 } 140 } 141 } 142 143 return false; 144 } 145 146 uint InstructForm::num_defs_or_kills() { 147 uint defs_or_kills = 0; 148 149 _components.reset(); 150 for( Component *comp; (comp = _components.iter()) != NULL; ) { 151 if( comp->isa(Component::DEF) || comp->isa(Component::KILL) ) { 152 ++defs_or_kills; 153 } 154 } 155 156 return defs_or_kills; 157 } 158 159 // This instruction has an expand rule? 160 bool InstructForm::expands() const { 161 return ( _exprule != NULL ); 162 } 163 164 // This instruction has a late expand rule? 165 bool InstructForm::postalloc_expands() const { 166 return _is_postalloc_expand; 167 } 168 169 // This instruction has a peephole rule? 170 Peephole *InstructForm::peepholes() const { 171 return _peephole; 172 } 173 174 // This instruction has a peephole rule? 175 void InstructForm::append_peephole(Peephole *peephole) { 176 if( _peephole == NULL ) { 177 _peephole = peephole; 178 } else { 179 _peephole->append_peephole(peephole); 180 } 181 } 182 183 184 // ideal opcode enumeration 185 const char *InstructForm::ideal_Opcode( FormDict &globalNames ) const { 186 if( !_matrule ) return "Node"; // Something weird 187 // Chain rules do not really have ideal Opcodes; use their source 188 // operand ideal Opcode instead. 189 if( is_simple_chain_rule(globalNames) ) { 190 const char *src = _matrule->_rChild->_opType; 191 OperandForm *src_op = globalNames[src]->is_operand(); 192 assert( src_op, "Not operand class of chain rule" ); 193 if( !src_op->_matrule ) return "Node"; 194 return src_op->_matrule->_opType; 195 } 196 // Operand chain rules do not really have ideal Opcodes 197 if( _matrule->is_chain_rule(globalNames) ) 198 return "Node"; 199 return strcmp(_matrule->_opType,"Set") 200 ? _matrule->_opType 201 : _matrule->_rChild->_opType; 202 } 203 204 // Recursive check on all operands' match rules in my match rule 205 bool InstructForm::is_pinned(FormDict &globals) { 206 if ( ! _matrule) return false; 207 208 int index = 0; 209 if (_matrule->find_type("Goto", index)) return true; 210 if (_matrule->find_type("If", index)) return true; 211 if (_matrule->find_type("CountedLoopEnd",index)) return true; 212 if (_matrule->find_type("Return", index)) return true; 213 if (_matrule->find_type("Rethrow", index)) return true; 214 if (_matrule->find_type("TailCall", index)) return true; 215 if (_matrule->find_type("TailJump", index)) return true; 216 if (_matrule->find_type("Halt", index)) return true; 217 if (_matrule->find_type("Jump", index)) return true; 218 219 return is_parm(globals); 220 } 221 222 // Recursive check on all operands' match rules in my match rule 223 bool InstructForm::is_projection(FormDict &globals) { 224 if ( ! _matrule) return false; 225 226 int index = 0; 227 if (_matrule->find_type("Goto", index)) return true; 228 if (_matrule->find_type("Return", index)) return true; 229 if (_matrule->find_type("Rethrow", index)) return true; 230 if (_matrule->find_type("TailCall",index)) return true; 231 if (_matrule->find_type("TailJump",index)) return true; 232 if (_matrule->find_type("Halt", index)) return true; 233 234 return false; 235 } 236 237 // Recursive check on all operands' match rules in my match rule 238 bool InstructForm::is_parm(FormDict &globals) { 239 if ( ! _matrule) return false; 240 241 int index = 0; 242 if (_matrule->find_type("Parm",index)) return true; 243 244 return false; 245 } 246 247 bool InstructForm::is_ideal_negD() const { 248 return (_matrule && _matrule->_rChild && strcmp(_matrule->_rChild->_opType, "NegD") == 0); 249 } 250 251 // Return 'true' if this instruction matches an ideal 'Copy*' node 252 int InstructForm::is_ideal_copy() const { 253 return _matrule ? _matrule->is_ideal_copy() : 0; 254 } 255 256 // Return 'true' if this instruction is too complex to rematerialize. 257 int InstructForm::is_expensive() const { 258 // We can prove it is cheap if it has an empty encoding. 259 // This helps with platform-specific nops like ThreadLocal and RoundFloat. 260 if (is_empty_encoding()) 261 return 0; 262 263 if (is_tls_instruction()) 264 return 1; 265 266 if (_matrule == NULL) return 0; 267 268 return _matrule->is_expensive(); 269 } 270 271 // Has an empty encoding if _size is a constant zero or there 272 // are no ins_encode tokens. 273 int InstructForm::is_empty_encoding() const { 274 if (_insencode != NULL) { 275 _insencode->reset(); 276 if (_insencode->encode_class_iter() == NULL) { 277 return 1; 278 } 279 } 280 if (_size != NULL && strcmp(_size, "0") == 0) { 281 return 1; 282 } 283 return 0; 284 } 285 286 int InstructForm::is_tls_instruction() const { 287 if (_ident != NULL && 288 ( ! strcmp( _ident,"tlsLoadP") || 289 ! strncmp(_ident,"tlsLoadP_",9)) ) { 290 return 1; 291 } 292 293 if (_matrule != NULL && _insencode != NULL) { 294 const char* opType = _matrule->_opType; 295 if (strcmp(opType, "Set")==0) 296 opType = _matrule->_rChild->_opType; 297 if (strcmp(opType,"ThreadLocal")==0) { 298 fprintf(stderr, "Warning: ThreadLocal instruction %s should be named 'tlsLoadP_*'\n", 299 (_ident == NULL ? "NULL" : _ident)); 300 return 1; 301 } 302 } 303 304 return 0; 305 } 306 307 308 // Return 'true' if this instruction matches an ideal 'If' node 309 bool InstructForm::is_ideal_if() const { 310 if( _matrule == NULL ) return false; 311 312 return _matrule->is_ideal_if(); 313 } 314 315 // Return 'true' if this instruction matches an ideal 'FastLock' node 316 bool InstructForm::is_ideal_fastlock() const { 317 if( _matrule == NULL ) return false; 318 319 return _matrule->is_ideal_fastlock(); 320 } 321 322 // Return 'true' if this instruction matches an ideal 'MemBarXXX' node 323 bool InstructForm::is_ideal_membar() const { 324 if( _matrule == NULL ) return false; 325 326 return _matrule->is_ideal_membar(); 327 } 328 329 // Return 'true' if this instruction matches an ideal 'LoadPC' node 330 bool InstructForm::is_ideal_loadPC() const { 331 if( _matrule == NULL ) return false; 332 333 return _matrule->is_ideal_loadPC(); 334 } 335 336 // Return 'true' if this instruction matches an ideal 'Box' node 337 bool InstructForm::is_ideal_box() const { 338 if( _matrule == NULL ) return false; 339 340 return _matrule->is_ideal_box(); 341 } 342 343 // Return 'true' if this instruction matches an ideal 'Goto' node 344 bool InstructForm::is_ideal_goto() const { 345 if( _matrule == NULL ) return false; 346 347 return _matrule->is_ideal_goto(); 348 } 349 350 // Return 'true' if this instruction matches an ideal 'Jump' node 351 bool InstructForm::is_ideal_jump() const { 352 if( _matrule == NULL ) return false; 353 354 return _matrule->is_ideal_jump(); 355 } 356 357 // Return 'true' if instruction matches ideal 'If' | 'Goto' | 'CountedLoopEnd' 358 bool InstructForm::is_ideal_branch() const { 359 if( _matrule == NULL ) return false; 360 361 return _matrule->is_ideal_if() || _matrule->is_ideal_goto(); 362 } 363 364 365 // Return 'true' if this instruction matches an ideal 'Return' node 366 bool InstructForm::is_ideal_return() const { 367 if( _matrule == NULL ) return false; 368 369 // Check MatchRule to see if the first entry is the ideal "Return" node 370 int index = 0; 371 if (_matrule->find_type("Return",index)) return true; 372 if (_matrule->find_type("Rethrow",index)) return true; 373 if (_matrule->find_type("TailCall",index)) return true; 374 if (_matrule->find_type("TailJump",index)) return true; 375 376 return false; 377 } 378 379 // Return 'true' if this instruction matches an ideal 'Halt' node 380 bool InstructForm::is_ideal_halt() const { 381 int index = 0; 382 return _matrule && _matrule->find_type("Halt",index); 383 } 384 385 // Return 'true' if this instruction matches an ideal 'SafePoint' node 386 bool InstructForm::is_ideal_safepoint() const { 387 int index = 0; 388 return _matrule && _matrule->find_type("SafePoint",index); 389 } 390 391 // Return 'true' if this instruction matches an ideal 'Nop' node 392 bool InstructForm::is_ideal_nop() const { 393 return _ident && _ident[0] == 'N' && _ident[1] == 'o' && _ident[2] == 'p' && _ident[3] == '_'; 394 } 395 396 bool InstructForm::is_ideal_control() const { 397 if ( ! _matrule) return false; 398 399 return is_ideal_return() || is_ideal_branch() || _matrule->is_ideal_jump() || is_ideal_halt(); 400 } 401 402 // Return 'true' if this instruction matches an ideal 'Call' node 403 Form::CallType InstructForm::is_ideal_call() const { 404 if( _matrule == NULL ) return Form::invalid_type; 405 406 // Check MatchRule to see if the first entry is the ideal "Call" node 407 int idx = 0; 408 if(_matrule->find_type("CallStaticJava",idx)) return Form::JAVA_STATIC; 409 idx = 0; 410 if(_matrule->find_type("Lock",idx)) return Form::JAVA_STATIC; 411 idx = 0; 412 if(_matrule->find_type("Unlock",idx)) return Form::JAVA_STATIC; 413 idx = 0; 414 if(_matrule->find_type("CallDynamicJava",idx)) return Form::JAVA_DYNAMIC; 415 idx = 0; 416 if(_matrule->find_type("CallRuntime",idx)) return Form::JAVA_RUNTIME; 417 idx = 0; 418 if(_matrule->find_type("CallLeaf",idx)) return Form::JAVA_LEAF; 419 idx = 0; 420 if(_matrule->find_type("CallLeafNoFP",idx)) return Form::JAVA_LEAF; 421 idx = 0; 422 423 return Form::invalid_type; 424 } 425 426 // Return 'true' if this instruction matches an ideal 'Load?' node 427 Form::DataType InstructForm::is_ideal_load() const { 428 if( _matrule == NULL ) return Form::none; 429 430 return _matrule->is_ideal_load(); 431 } 432 433 // Return 'true' if this instruction matches an ideal 'LoadKlass' node 434 bool InstructForm::skip_antidep_check() const { 435 if( _matrule == NULL ) return false; 436 437 return _matrule->skip_antidep_check(); 438 } 439 440 // Return 'true' if this instruction matches an ideal 'Load?' node 441 Form::DataType InstructForm::is_ideal_store() const { 442 if( _matrule == NULL ) return Form::none; 443 444 return _matrule->is_ideal_store(); 445 } 446 447 // Return 'true' if this instruction matches an ideal vector node 448 bool InstructForm::is_vector() const { 449 if( _matrule == NULL ) return false; 450 451 return _matrule->is_vector(); 452 } 453 454 455 // Return the input register that must match the output register 456 // If this is not required, return 0 457 uint InstructForm::two_address(FormDict &globals) { 458 uint matching_input = 0; 459 if(_components.count() == 0) return 0; 460 461 _components.reset(); 462 Component *comp = _components.iter(); 463 // Check if there is a DEF 464 if( comp->isa(Component::DEF) ) { 465 // Check that this is a register 466 const char *def_type = comp->_type; 467 const Form *form = globals[def_type]; 468 OperandForm *op = form->is_operand(); 469 if( op ) { 470 if( op->constrained_reg_class() != NULL && 471 op->interface_type(globals) == Form::register_interface ) { 472 // Remember the local name for equality test later 473 const char *def_name = comp->_name; 474 // Check if a component has the same name and is a USE 475 do { 476 if( comp->isa(Component::USE) && strcmp(comp->_name,def_name)==0 ) { 477 return operand_position_format(def_name); 478 } 479 } while( (comp = _components.iter()) != NULL); 480 } 481 } 482 } 483 484 return 0; 485 } 486 487 488 // when chaining a constant to an instruction, returns 'true' and sets opType 489 Form::DataType InstructForm::is_chain_of_constant(FormDict &globals) { 490 const char *dummy = NULL; 491 const char *dummy2 = NULL; 492 return is_chain_of_constant(globals, dummy, dummy2); 493 } 494 Form::DataType InstructForm::is_chain_of_constant(FormDict &globals, 495 const char * &opTypeParam) { 496 const char *result = NULL; 497 498 return is_chain_of_constant(globals, opTypeParam, result); 499 } 500 501 Form::DataType InstructForm::is_chain_of_constant(FormDict &globals, 502 const char * &opTypeParam, const char * &resultParam) { 503 Form::DataType data_type = Form::none; 504 if ( ! _matrule) return data_type; 505 506 // !!!!! 507 // The source of the chain rule is 'position = 1' 508 uint position = 1; 509 const char *result = NULL; 510 const char *name = NULL; 511 const char *opType = NULL; 512 // Here base_operand is looking for an ideal type to be returned (opType). 513 if ( _matrule->is_chain_rule(globals) 514 && _matrule->base_operand(position, globals, result, name, opType) ) { 515 data_type = ideal_to_const_type(opType); 516 517 // if it isn't an ideal constant type, just return 518 if ( data_type == Form::none ) return data_type; 519 520 // Ideal constant types also adjust the opType parameter. 521 resultParam = result; 522 opTypeParam = opType; 523 return data_type; 524 } 525 526 return data_type; 527 } 528 529 // Check if a simple chain rule 530 bool InstructForm::is_simple_chain_rule(FormDict &globals) const { 531 if( _matrule && _matrule->sets_result() 532 && _matrule->_rChild->_lChild == NULL 533 && globals[_matrule->_rChild->_opType] 534 && globals[_matrule->_rChild->_opType]->is_opclass() ) { 535 return true; 536 } 537 return false; 538 } 539 540 // check for structural rematerialization 541 bool InstructForm::rematerialize(FormDict &globals, RegisterForm *registers ) { 542 bool rematerialize = false; 543 544 Form::DataType data_type = is_chain_of_constant(globals); 545 if( data_type != Form::none ) 546 rematerialize = true; 547 548 // Constants 549 if( _components.count() == 1 && _components[0]->is(Component::USE_DEF) ) 550 rematerialize = true; 551 552 // Pseudo-constants (values easily available to the runtime) 553 if (is_empty_encoding() && is_tls_instruction()) 554 rematerialize = true; 555 556 // 1-input, 1-output, such as copies or increments. 557 if( _components.count() == 2 && 558 _components[0]->is(Component::DEF) && 559 _components[1]->isa(Component::USE) ) 560 rematerialize = true; 561 562 // Check for an ideal 'Load?' and eliminate rematerialize option 563 if ( is_ideal_load() != Form::none || // Ideal load? Do not rematerialize 564 is_ideal_copy() != Form::none || // Ideal copy? Do not rematerialize 565 is_expensive() != Form::none) { // Expensive? Do not rematerialize 566 rematerialize = false; 567 } 568 569 // Always rematerialize the flags. They are more expensive to save & 570 // restore than to recompute (and possibly spill the compare's inputs). 571 if( _components.count() >= 1 ) { 572 Component *c = _components[0]; 573 const Form *form = globals[c->_type]; 574 OperandForm *opform = form->is_operand(); 575 if( opform ) { 576 // Avoid the special stack_slots register classes 577 const char *rc_name = opform->constrained_reg_class(); 578 if( rc_name ) { 579 if( strcmp(rc_name,"stack_slots") ) { 580 // Check for ideal_type of RegFlags 581 const char *type = opform->ideal_type( globals, registers ); 582 if( (type != NULL) && !strcmp(type, "RegFlags") ) 583 rematerialize = true; 584 } else 585 rematerialize = false; // Do not rematerialize things target stk 586 } 587 } 588 } 589 590 return rematerialize; 591 } 592 593 // loads from memory, so must check for anti-dependence 594 bool InstructForm::needs_anti_dependence_check(FormDict &globals) const { 595 if ( skip_antidep_check() ) return false; 596 597 // Machine independent loads must be checked for anti-dependences 598 if( is_ideal_load() != Form::none ) return true; 599 600 // !!!!! !!!!! !!!!! 601 // TEMPORARY 602 // if( is_simple_chain_rule(globals) ) return false; 603 604 // String.(compareTo/equals/indexOf) and Arrays.equals use many memorys edges, 605 // but writes none 606 if( _matrule && _matrule->_rChild && 607 ( strcmp(_matrule->_rChild->_opType,"StrComp" )==0 || 608 strcmp(_matrule->_rChild->_opType,"StrEquals" )==0 || 609 strcmp(_matrule->_rChild->_opType,"StrIndexOf" )==0 || 610 strcmp(_matrule->_rChild->_opType,"AryEq" )==0 )) 611 return true; 612 613 // Check if instruction has a USE of a memory operand class, but no defs 614 bool USE_of_memory = false; 615 bool DEF_of_memory = false; 616 Component *comp = NULL; 617 ComponentList &components = (ComponentList &)_components; 618 619 components.reset(); 620 while( (comp = components.iter()) != NULL ) { 621 const Form *form = globals[comp->_type]; 622 if( !form ) continue; 623 OpClassForm *op = form->is_opclass(); 624 if( !op ) continue; 625 if( form->interface_type(globals) == Form::memory_interface ) { 626 if( comp->isa(Component::USE) ) USE_of_memory = true; 627 if( comp->isa(Component::DEF) ) { 628 OperandForm *oper = form->is_operand(); 629 if( oper && oper->is_user_name_for_sReg() ) { 630 // Stack slots are unaliased memory handled by allocator 631 oper = oper; // debug stopping point !!!!! 632 } else { 633 DEF_of_memory = true; 634 } 635 } 636 } 637 } 638 return (USE_of_memory && !DEF_of_memory); 639 } 640 641 642 bool InstructForm::is_wide_memory_kill(FormDict &globals) const { 643 if( _matrule == NULL ) return false; 644 if( !_matrule->_opType ) return false; 645 646 if( strcmp(_matrule->_opType,"MemBarRelease") == 0 ) return true; 647 if( strcmp(_matrule->_opType,"MemBarAcquire") == 0 ) return true; 648 if( strcmp(_matrule->_opType,"MemBarReleaseLock") == 0 ) return true; 649 if( strcmp(_matrule->_opType,"MemBarAcquireLock") == 0 ) return true; 650 if( strcmp(_matrule->_opType,"MemBarStoreStore") == 0 ) return true; 651 if( strcmp(_matrule->_opType,"StoreFence") == 0 ) return true; 652 if( strcmp(_matrule->_opType,"LoadFence") == 0 ) return true; 653 654 return false; 655 } 656 657 int InstructForm::memory_operand(FormDict &globals) const { 658 // Machine independent loads must be checked for anti-dependences 659 // Check if instruction has a USE of a memory operand class, or a def. 660 int USE_of_memory = 0; 661 int DEF_of_memory = 0; 662 const char* last_memory_DEF = NULL; // to test DEF/USE pairing in asserts 663 const char* last_memory_USE = NULL; 664 Component *unique = NULL; 665 Component *comp = NULL; 666 ComponentList &components = (ComponentList &)_components; 667 668 components.reset(); 669 while( (comp = components.iter()) != NULL ) { 670 const Form *form = globals[comp->_type]; 671 if( !form ) continue; 672 OpClassForm *op = form->is_opclass(); 673 if( !op ) continue; 674 if( op->stack_slots_only(globals) ) continue; 675 if( form->interface_type(globals) == Form::memory_interface ) { 676 if( comp->isa(Component::DEF) ) { 677 last_memory_DEF = comp->_name; 678 DEF_of_memory++; 679 unique = comp; 680 } else if( comp->isa(Component::USE) ) { 681 if( last_memory_DEF != NULL ) { 682 assert(0 == strcmp(last_memory_DEF, comp->_name), "every memory DEF is followed by a USE of the same name"); 683 last_memory_DEF = NULL; 684 } 685 // Handles same memory being used multiple times in the case of BMI1 instructions. 686 if (last_memory_USE != NULL) { 687 if (strcmp(comp->_name, last_memory_USE) != 0) { 688 USE_of_memory++; 689 } 690 } else { 691 USE_of_memory++; 692 } 693 last_memory_USE = comp->_name; 694 695 if (DEF_of_memory == 0) // defs take precedence 696 unique = comp; 697 } else { 698 assert(last_memory_DEF == NULL, "unpaired memory DEF"); 699 } 700 } 701 } 702 assert(last_memory_DEF == NULL, "unpaired memory DEF"); 703 assert(USE_of_memory >= DEF_of_memory, "unpaired memory DEF"); 704 USE_of_memory -= DEF_of_memory; // treat paired DEF/USE as one occurrence 705 if( (USE_of_memory + DEF_of_memory) > 0 ) { 706 if( is_simple_chain_rule(globals) ) { 707 //fprintf(stderr, "Warning: chain rule is not really a memory user.\n"); 708 //((InstructForm*)this)->dump(); 709 // Preceding code prints nothing on sparc and these insns on intel: 710 // leaP8 leaP32 leaPIdxOff leaPIdxScale leaPIdxScaleOff leaP8 leaP32 711 // leaPIdxOff leaPIdxScale leaPIdxScaleOff 712 return NO_MEMORY_OPERAND; 713 } 714 715 if( DEF_of_memory == 1 ) { 716 assert(unique != NULL, ""); 717 if( USE_of_memory == 0 ) { 718 // unique def, no uses 719 } else { 720 // // unique def, some uses 721 // // must return bottom unless all uses match def 722 // unique = NULL; 723 } 724 } else if( DEF_of_memory > 0 ) { 725 // multiple defs, don't care about uses 726 unique = NULL; 727 } else if( USE_of_memory == 1) { 728 // unique use, no defs 729 assert(unique != NULL, ""); 730 } else if( USE_of_memory > 0 ) { 731 // multiple uses, no defs 732 unique = NULL; 733 } else { 734 assert(false, "bad case analysis"); 735 } 736 // process the unique DEF or USE, if there is one 737 if( unique == NULL ) { 738 return MANY_MEMORY_OPERANDS; 739 } else { 740 int pos = components.operand_position(unique->_name); 741 if( unique->isa(Component::DEF) ) { 742 pos += 1; // get corresponding USE from DEF 743 } 744 assert(pos >= 1, "I was just looking at it!"); 745 return pos; 746 } 747 } 748 749 // missed the memory op?? 750 if( true ) { // %%% should not be necessary 751 if( is_ideal_store() != Form::none ) { 752 fprintf(stderr, "Warning: cannot find memory opnd in instr.\n"); 753 ((InstructForm*)this)->dump(); 754 // pretend it has multiple defs and uses 755 return MANY_MEMORY_OPERANDS; 756 } 757 if( is_ideal_load() != Form::none ) { 758 fprintf(stderr, "Warning: cannot find memory opnd in instr.\n"); 759 ((InstructForm*)this)->dump(); 760 // pretend it has multiple uses and no defs 761 return MANY_MEMORY_OPERANDS; 762 } 763 } 764 765 return NO_MEMORY_OPERAND; 766 } 767 768 769 // This instruction captures the machine-independent bottom_type 770 // Expected use is for pointer vs oop determination for LoadP 771 bool InstructForm::captures_bottom_type(FormDict &globals) const { 772 if( _matrule && _matrule->_rChild && 773 (!strcmp(_matrule->_rChild->_opType,"CastPP") || // new result type 774 !strcmp(_matrule->_rChild->_opType,"CastX2P") || // new result type 775 !strcmp(_matrule->_rChild->_opType,"DecodeN") || 776 !strcmp(_matrule->_rChild->_opType,"EncodeP") || 777 !strcmp(_matrule->_rChild->_opType,"DecodeNKlass") || 778 !strcmp(_matrule->_rChild->_opType,"EncodePKlass") || 779 !strcmp(_matrule->_rChild->_opType,"LoadN") || 780 !strcmp(_matrule->_rChild->_opType,"LoadNKlass") || 781 !strcmp(_matrule->_rChild->_opType,"CreateEx") || // type of exception 782 !strcmp(_matrule->_rChild->_opType,"CheckCastPP") || 783 !strcmp(_matrule->_rChild->_opType,"GetAndSetP") || 784 !strcmp(_matrule->_rChild->_opType,"GetAndSetN")) ) return true; 785 else if ( is_ideal_load() == Form::idealP ) return true; 786 else if ( is_ideal_store() != Form::none ) return true; 787 788 if (needs_base_oop_edge(globals)) return true; 789 790 if (is_vector()) return true; 791 if (is_mach_constant()) return true; 792 793 return false; 794 } 795 796 797 // Access instr_cost attribute or return NULL. 798 const char* InstructForm::cost() { 799 for (Attribute* cur = _attribs; cur != NULL; cur = (Attribute*)cur->_next) { 800 if( strcmp(cur->_ident,AttributeForm::_ins_cost) == 0 ) { 801 return cur->_val; 802 } 803 } 804 return NULL; 805 } 806 807 // Return count of top-level operands. 808 uint InstructForm::num_opnds() { 809 int num_opnds = _components.num_operands(); 810 811 // Need special handling for matching some ideal nodes 812 // i.e. Matching a return node 813 /* 814 if( _matrule ) { 815 if( strcmp(_matrule->_opType,"Return" )==0 || 816 strcmp(_matrule->_opType,"Halt" )==0 ) 817 return 3; 818 } 819 */ 820 return num_opnds; 821 } 822 823 const char* InstructForm::opnd_ident(int idx) { 824 return _components.at(idx)->_name; 825 } 826 827 const char* InstructForm::unique_opnd_ident(uint idx) { 828 uint i; 829 for (i = 1; i < num_opnds(); ++i) { 830 if (unique_opnds_idx(i) == idx) { 831 break; 832 } 833 } 834 return (_components.at(i) != NULL) ? _components.at(i)->_name : ""; 835 } 836 837 // Return count of unmatched operands. 838 uint InstructForm::num_post_match_opnds() { 839 uint num_post_match_opnds = _components.count(); 840 uint num_match_opnds = _components.match_count(); 841 num_post_match_opnds = num_post_match_opnds - num_match_opnds; 842 843 return num_post_match_opnds; 844 } 845 846 // Return the number of leaves below this complex operand 847 uint InstructForm::num_consts(FormDict &globals) const { 848 if ( ! _matrule) return 0; 849 850 // This is a recursive invocation on all operands in the matchrule 851 return _matrule->num_consts(globals); 852 } 853 854 // Constants in match rule with specified type 855 uint InstructForm::num_consts(FormDict &globals, Form::DataType type) const { 856 if ( ! _matrule) return 0; 857 858 // This is a recursive invocation on all operands in the matchrule 859 return _matrule->num_consts(globals, type); 860 } 861 862 863 // Return the register class associated with 'leaf'. 864 const char *InstructForm::out_reg_class(FormDict &globals) { 865 assert( false, "InstructForm::out_reg_class(FormDict &globals); Not Implemented"); 866 867 return NULL; 868 } 869 870 871 872 // Lookup the starting position of inputs we are interested in wrt. ideal nodes 873 uint InstructForm::oper_input_base(FormDict &globals) { 874 if( !_matrule ) return 1; // Skip control for most nodes 875 876 // Need special handling for matching some ideal nodes 877 // i.e. Matching a return node 878 if( strcmp(_matrule->_opType,"Return" )==0 || 879 strcmp(_matrule->_opType,"Rethrow" )==0 || 880 strcmp(_matrule->_opType,"TailCall" )==0 || 881 strcmp(_matrule->_opType,"TailJump" )==0 || 882 strcmp(_matrule->_opType,"SafePoint" )==0 || 883 strcmp(_matrule->_opType,"Halt" )==0 ) 884 return AdlcVMDeps::Parms; // Skip the machine-state edges 885 886 if( _matrule->_rChild && 887 ( strcmp(_matrule->_rChild->_opType,"AryEq" )==0 || 888 strcmp(_matrule->_rChild->_opType,"StrComp" )==0 || 889 strcmp(_matrule->_rChild->_opType,"StrEquals" )==0 || 890 strcmp(_matrule->_rChild->_opType,"StrIndexOf")==0 || 891 strcmp(_matrule->_rChild->_opType,"EncodeISOArray")==0)) { 892 // String.(compareTo/equals/indexOf) and Arrays.equals 893 // and sun.nio.cs.iso8859_1$Encoder.EncodeISOArray 894 // take 1 control and 1 memory edges. 895 return 2; 896 } 897 898 // Check for handling of 'Memory' input/edge in the ideal world. 899 // The AD file writer is shielded from knowledge of these edges. 900 int base = 1; // Skip control 901 base += _matrule->needs_ideal_memory_edge(globals); 902 903 // Also skip the base-oop value for uses of derived oops. 904 // The AD file writer is shielded from knowledge of these edges. 905 base += needs_base_oop_edge(globals); 906 907 return base; 908 } 909 910 // This function determines the order of the MachOper in _opnds[] 911 // by writing the operand names into the _components list. 912 // 913 // Implementation does not modify state of internal structures 914 void InstructForm::build_components() { 915 // Add top-level operands to the components 916 if (_matrule) _matrule->append_components(_localNames, _components); 917 918 // Add parameters that "do not appear in match rule". 919 bool has_temp = false; 920 const char *name; 921 const char *kill_name = NULL; 922 for (_parameters.reset(); (name = _parameters.iter()) != NULL;) { 923 OperandForm *opForm = (OperandForm*)_localNames[name]; 924 925 Effect* e = NULL; 926 { 927 const Form* form = _effects[name]; 928 e = form ? form->is_effect() : NULL; 929 } 930 931 if (e != NULL) { 932 has_temp |= e->is(Component::TEMP); 933 934 // KILLs must be declared after any TEMPs because TEMPs are real 935 // uses so their operand numbering must directly follow the real 936 // inputs from the match rule. Fixing the numbering seems 937 // complex so simply enforce the restriction during parse. 938 if (kill_name != NULL && 939 e->isa(Component::TEMP) && !e->isa(Component::DEF)) { 940 OperandForm* kill = (OperandForm*)_localNames[kill_name]; 941 globalAD->syntax_err(_linenum, "%s: %s %s must be at the end of the argument list\n", 942 _ident, kill->_ident, kill_name); 943 } else if (e->isa(Component::KILL) && !e->isa(Component::USE)) { 944 kill_name = name; 945 } 946 } 947 948 const Component *component = _components.search(name); 949 if ( component == NULL ) { 950 if (e) { 951 _components.insert(name, opForm->_ident, e->_use_def, false); 952 component = _components.search(name); 953 if (component->isa(Component::USE) && !component->isa(Component::TEMP) && _matrule) { 954 const Form *form = globalAD->globalNames()[component->_type]; 955 assert( form, "component type must be a defined form"); 956 OperandForm *op = form->is_operand(); 957 if (op->_interface && op->_interface->is_RegInterface()) { 958 globalAD->syntax_err(_linenum, "%s: illegal USE of non-input: %s %s\n", 959 _ident, opForm->_ident, name); 960 } 961 } 962 } else { 963 // This would be a nice warning but it triggers in a few places in a benign way 964 // if (_matrule != NULL && !expands()) { 965 // globalAD->syntax_err(_linenum, "%s: %s %s not mentioned in effect or match rule\n", 966 // _ident, opForm->_ident, name); 967 // } 968 _components.insert(name, opForm->_ident, Component::INVALID, false); 969 } 970 } 971 else if (e) { 972 // Component was found in the list 973 // Check if there is a new effect that requires an extra component. 974 // This happens when adding 'USE' to a component that is not yet one. 975 if ((!component->isa( Component::USE) && ((e->_use_def & Component::USE) != 0))) { 976 if (component->isa(Component::USE) && _matrule) { 977 const Form *form = globalAD->globalNames()[component->_type]; 978 assert( form, "component type must be a defined form"); 979 OperandForm *op = form->is_operand(); 980 if (op->_interface && op->_interface->is_RegInterface()) { 981 globalAD->syntax_err(_linenum, "%s: illegal USE of non-input: %s %s\n", 982 _ident, opForm->_ident, name); 983 } 984 } 985 _components.insert(name, opForm->_ident, e->_use_def, false); 986 } else { 987 Component *comp = (Component*)component; 988 comp->promote_use_def_info(e->_use_def); 989 } 990 // Component positions are zero based. 991 int pos = _components.operand_position(name); 992 assert( ! (component->isa(Component::DEF) && (pos >= 1)), 993 "Component::DEF can only occur in the first position"); 994 } 995 } 996 997 // Resolving the interactions between expand rules and TEMPs would 998 // be complex so simply disallow it. 999 if (_matrule == NULL && has_temp) { 1000 globalAD->syntax_err(_linenum, "%s: TEMPs without match rule isn't supported\n", _ident); 1001 } 1002 1003 return; 1004 } 1005 1006 // Return zero-based position in component list; -1 if not in list. 1007 int InstructForm::operand_position(const char *name, int usedef) { 1008 return unique_opnds_idx(_components.operand_position(name, usedef, this)); 1009 } 1010 1011 int InstructForm::operand_position_format(const char *name) { 1012 return unique_opnds_idx(_components.operand_position_format(name, this)); 1013 } 1014 1015 // Return zero-based position in component list; -1 if not in list. 1016 int InstructForm::label_position() { 1017 return unique_opnds_idx(_components.label_position()); 1018 } 1019 1020 int InstructForm::method_position() { 1021 return unique_opnds_idx(_components.method_position()); 1022 } 1023 1024 // Return number of relocation entries needed for this instruction. 1025 uint InstructForm::reloc(FormDict &globals) { 1026 uint reloc_entries = 0; 1027 // Check for "Call" nodes 1028 if ( is_ideal_call() ) ++reloc_entries; 1029 if ( is_ideal_return() ) ++reloc_entries; 1030 if ( is_ideal_safepoint() ) ++reloc_entries; 1031 1032 1033 // Check if operands MAYBE oop pointers, by checking for ConP elements 1034 // Proceed through the leaves of the match-tree and check for ConPs 1035 if ( _matrule != NULL ) { 1036 uint position = 0; 1037 const char *result = NULL; 1038 const char *name = NULL; 1039 const char *opType = NULL; 1040 while (_matrule->base_operand(position, globals, result, name, opType)) { 1041 if ( strcmp(opType,"ConP") == 0 ) { 1042 #ifdef SPARC 1043 reloc_entries += 2; // 1 for sethi + 1 for setlo 1044 #else 1045 ++reloc_entries; 1046 #endif 1047 } 1048 ++position; 1049 } 1050 } 1051 1052 // Above is only a conservative estimate 1053 // because it did not check contents of operand classes. 1054 // !!!!! !!!!! 1055 // Add 1 to reloc info for each operand class in the component list. 1056 Component *comp; 1057 _components.reset(); 1058 while ( (comp = _components.iter()) != NULL ) { 1059 const Form *form = globals[comp->_type]; 1060 assert( form, "Did not find component's type in global names"); 1061 const OpClassForm *opc = form->is_opclass(); 1062 const OperandForm *oper = form->is_operand(); 1063 if ( opc && (oper == NULL) ) { 1064 ++reloc_entries; 1065 } else if ( oper ) { 1066 // floats and doubles loaded out of method's constant pool require reloc info 1067 Form::DataType type = oper->is_base_constant(globals); 1068 if ( (type == Form::idealF) || (type == Form::idealD) ) { 1069 ++reloc_entries; 1070 } 1071 } 1072 } 1073 1074 // Float and Double constants may come from the CodeBuffer table 1075 // and require relocatable addresses for access 1076 // !!!!! 1077 // Check for any component being an immediate float or double. 1078 Form::DataType data_type = is_chain_of_constant(globals); 1079 if( data_type==idealD || data_type==idealF ) { 1080 #ifdef SPARC 1081 // sparc required more relocation entries for floating constants 1082 // (expires 9/98) 1083 reloc_entries += 6; 1084 #else 1085 reloc_entries++; 1086 #endif 1087 } 1088 1089 return reloc_entries; 1090 } 1091 1092 // Utility function defined in archDesc.cpp 1093 extern bool is_def(int usedef); 1094 1095 // Return the result of reducing an instruction 1096 const char *InstructForm::reduce_result() { 1097 const char* result = "Universe"; // default 1098 _components.reset(); 1099 Component *comp = _components.iter(); 1100 if (comp != NULL && comp->isa(Component::DEF)) { 1101 result = comp->_type; 1102 // Override this if the rule is a store operation: 1103 if (_matrule && _matrule->_rChild && 1104 is_store_to_memory(_matrule->_rChild->_opType)) 1105 result = "Universe"; 1106 } 1107 return result; 1108 } 1109 1110 // Return the name of the operand on the right hand side of the binary match 1111 // Return NULL if there is no right hand side 1112 const char *InstructForm::reduce_right(FormDict &globals) const { 1113 if( _matrule == NULL ) return NULL; 1114 return _matrule->reduce_right(globals); 1115 } 1116 1117 // Similar for left 1118 const char *InstructForm::reduce_left(FormDict &globals) const { 1119 if( _matrule == NULL ) return NULL; 1120 return _matrule->reduce_left(globals); 1121 } 1122 1123 1124 // Base class for this instruction, MachNode except for calls 1125 const char *InstructForm::mach_base_class(FormDict &globals) const { 1126 if( is_ideal_call() == Form::JAVA_STATIC ) { 1127 return "MachCallStaticJavaNode"; 1128 } 1129 else if( is_ideal_call() == Form::JAVA_DYNAMIC ) { 1130 return "MachCallDynamicJavaNode"; 1131 } 1132 else if( is_ideal_call() == Form::JAVA_RUNTIME ) { 1133 return "MachCallRuntimeNode"; 1134 } 1135 else if( is_ideal_call() == Form::JAVA_LEAF ) { 1136 return "MachCallLeafNode"; 1137 } 1138 else if (is_ideal_return()) { 1139 return "MachReturnNode"; 1140 } 1141 else if (is_ideal_halt()) { 1142 return "MachHaltNode"; 1143 } 1144 else if (is_ideal_safepoint()) { 1145 return "MachSafePointNode"; 1146 } 1147 else if (is_ideal_if()) { 1148 return "MachIfNode"; 1149 } 1150 else if (is_ideal_goto()) { 1151 return "MachGotoNode"; 1152 } 1153 else if (is_ideal_fastlock()) { 1154 return "MachFastLockNode"; 1155 } 1156 else if (is_ideal_nop()) { 1157 return "MachNopNode"; 1158 } 1159 else if (is_mach_constant()) { 1160 return "MachConstantNode"; 1161 } 1162 else if (captures_bottom_type(globals)) { 1163 return "MachTypeNode"; 1164 } else { 1165 return "MachNode"; 1166 } 1167 assert( false, "ShouldNotReachHere()"); 1168 return NULL; 1169 } 1170 1171 // Compare the instruction predicates for textual equality 1172 bool equivalent_predicates( const InstructForm *instr1, const InstructForm *instr2 ) { 1173 const Predicate *pred1 = instr1->_predicate; 1174 const Predicate *pred2 = instr2->_predicate; 1175 if( pred1 == NULL && pred2 == NULL ) { 1176 // no predicates means they are identical 1177 return true; 1178 } 1179 if( pred1 != NULL && pred2 != NULL ) { 1180 // compare the predicates 1181 if (ADLParser::equivalent_expressions(pred1->_pred, pred2->_pred)) { 1182 return true; 1183 } 1184 } 1185 1186 return false; 1187 } 1188 1189 // Check if this instruction can cisc-spill to 'alternate' 1190 bool InstructForm::cisc_spills_to(ArchDesc &AD, InstructForm *instr) { 1191 assert( _matrule != NULL && instr->_matrule != NULL, "must have match rules"); 1192 // Do not replace if a cisc-version has been found. 1193 if( cisc_spill_operand() != Not_cisc_spillable ) return false; 1194 1195 int cisc_spill_operand = Maybe_cisc_spillable; 1196 char *result = NULL; 1197 char *result2 = NULL; 1198 const char *op_name = NULL; 1199 const char *reg_type = NULL; 1200 FormDict &globals = AD.globalNames(); 1201 cisc_spill_operand = _matrule->matchrule_cisc_spill_match(globals, AD.get_registers(), instr->_matrule, op_name, reg_type); 1202 if( (cisc_spill_operand != Not_cisc_spillable) && (op_name != NULL) && equivalent_predicates(this, instr) ) { 1203 cisc_spill_operand = operand_position(op_name, Component::USE); 1204 int def_oper = operand_position(op_name, Component::DEF); 1205 if( def_oper == NameList::Not_in_list && instr->num_opnds() == num_opnds()) { 1206 // Do not support cisc-spilling for destination operands and 1207 // make sure they have the same number of operands. 1208 _cisc_spill_alternate = instr; 1209 instr->set_cisc_alternate(true); 1210 if( AD._cisc_spill_debug ) { 1211 fprintf(stderr, "Instruction %s cisc-spills-to %s\n", _ident, instr->_ident); 1212 fprintf(stderr, " using operand %s %s at index %d\n", reg_type, op_name, cisc_spill_operand); 1213 } 1214 // Record that a stack-version of the reg_mask is needed 1215 // !!!!! 1216 OperandForm *oper = (OperandForm*)(globals[reg_type]->is_operand()); 1217 assert( oper != NULL, "cisc-spilling non operand"); 1218 const char *reg_class_name = oper->constrained_reg_class(); 1219 AD.set_stack_or_reg(reg_class_name); 1220 const char *reg_mask_name = AD.reg_mask(*oper); 1221 set_cisc_reg_mask_name(reg_mask_name); 1222 const char *stack_or_reg_mask_name = AD.stack_or_reg_mask(*oper); 1223 } else { 1224 cisc_spill_operand = Not_cisc_spillable; 1225 } 1226 } else { 1227 cisc_spill_operand = Not_cisc_spillable; 1228 } 1229 1230 set_cisc_spill_operand(cisc_spill_operand); 1231 return (cisc_spill_operand != Not_cisc_spillable); 1232 } 1233 1234 // Check to see if this instruction can be replaced with the short branch 1235 // instruction `short-branch' 1236 bool InstructForm::check_branch_variant(ArchDesc &AD, InstructForm *short_branch) { 1237 if (_matrule != NULL && 1238 this != short_branch && // Don't match myself 1239 !is_short_branch() && // Don't match another short branch variant 1240 reduce_result() != NULL && 1241 strcmp(reduce_result(), short_branch->reduce_result()) == 0 && 1242 _matrule->equivalent(AD.globalNames(), short_branch->_matrule)) { 1243 // The instructions are equivalent. 1244 1245 // Now verify that both instructions have the same parameters and 1246 // the same effects. Both branch forms should have the same inputs 1247 // and resulting projections to correctly replace a long branch node 1248 // with corresponding short branch node during code generation. 1249 1250 bool different = false; 1251 if (short_branch->_components.count() != _components.count()) { 1252 different = true; 1253 } else if (_components.count() > 0) { 1254 short_branch->_components.reset(); 1255 _components.reset(); 1256 Component *comp; 1257 while ((comp = _components.iter()) != NULL) { 1258 Component *short_comp = short_branch->_components.iter(); 1259 if (short_comp == NULL || 1260 short_comp->_type != comp->_type || 1261 short_comp->_usedef != comp->_usedef) { 1262 different = true; 1263 break; 1264 } 1265 } 1266 if (short_branch->_components.iter() != NULL) 1267 different = true; 1268 } 1269 if (different) { 1270 globalAD->syntax_err(short_branch->_linenum, "Instruction %s and its short form %s have different parameters\n", _ident, short_branch->_ident); 1271 } 1272 if (AD._adl_debug > 1 || AD._short_branch_debug) { 1273 fprintf(stderr, "Instruction %s has short form %s\n", _ident, short_branch->_ident); 1274 } 1275 _short_branch_form = short_branch; 1276 return true; 1277 } 1278 return false; 1279 } 1280 1281 1282 // --------------------------- FILE *output_routines 1283 // 1284 // Generate the format call for the replacement variable 1285 void InstructForm::rep_var_format(FILE *fp, const char *rep_var) { 1286 // Handle special constant table variables. 1287 if (strcmp(rep_var, "constanttablebase") == 0) { 1288 fprintf(fp, "char reg[128]; ra->dump_register(in(mach_constant_base_node_input()), reg);\n"); 1289 fprintf(fp, " st->print(\"%%s\", reg);\n"); 1290 return; 1291 } 1292 if (strcmp(rep_var, "constantoffset") == 0) { 1293 fprintf(fp, "st->print(\"#%%d\", constant_offset_unchecked());\n"); 1294 return; 1295 } 1296 if (strcmp(rep_var, "constantaddress") == 0) { 1297 fprintf(fp, "st->print(\"constant table base + #%%d\", constant_offset_unchecked());\n"); 1298 return; 1299 } 1300 1301 // Find replacement variable's type 1302 const Form *form = _localNames[rep_var]; 1303 if (form == NULL) { 1304 globalAD->syntax_err(_linenum, "Unknown replacement variable %s in format statement of %s.", 1305 rep_var, _ident); 1306 return; 1307 } 1308 OpClassForm *opc = form->is_opclass(); 1309 assert( opc, "replacement variable was not found in local names"); 1310 // Lookup the index position of the replacement variable 1311 int idx = operand_position_format(rep_var); 1312 if ( idx == -1 ) { 1313 globalAD->syntax_err(_linenum, "Could not find replacement variable %s in format statement of %s.\n", 1314 rep_var, _ident); 1315 assert(strcmp(opc->_ident, "label") == 0, "Unimplemented"); 1316 return; 1317 } 1318 1319 if (is_noninput_operand(idx)) { 1320 // This component isn't in the input array. Print out the static 1321 // name of the register. 1322 OperandForm* oper = form->is_operand(); 1323 if (oper != NULL && oper->is_bound_register()) { 1324 const RegDef* first = oper->get_RegClass()->find_first_elem(); 1325 fprintf(fp, " st->print_raw(\"%s\");\n", first->_regname); 1326 } else { 1327 globalAD->syntax_err(_linenum, "In %s can't find format for %s %s", _ident, opc->_ident, rep_var); 1328 } 1329 } else { 1330 // Output the format call for this operand 1331 fprintf(fp,"opnd_array(%d)->",idx); 1332 if (idx == 0) 1333 fprintf(fp,"int_format(ra, this, st); // %s\n", rep_var); 1334 else 1335 fprintf(fp,"ext_format(ra, this,idx%d, st); // %s\n", idx, rep_var ); 1336 } 1337 } 1338 1339 // Seach through operands to determine parameters unique positions. 1340 void InstructForm::set_unique_opnds() { 1341 uint* uniq_idx = NULL; 1342 uint nopnds = num_opnds(); 1343 uint num_uniq = nopnds; 1344 uint i; 1345 _uniq_idx_length = 0; 1346 if (nopnds > 0) { 1347 // Allocate index array. Worst case we're mapping from each 1348 // component back to an index and any DEF always goes at 0 so the 1349 // length of the array has to be the number of components + 1. 1350 _uniq_idx_length = _components.count() + 1; 1351 uniq_idx = (uint*) malloc(sizeof(uint) * _uniq_idx_length); 1352 for (i = 0; i < _uniq_idx_length; i++) { 1353 uniq_idx[i] = i; 1354 } 1355 } 1356 // Do it only if there is a match rule and no expand rule. With an 1357 // expand rule it is done by creating new mach node in Expand() 1358 // method. 1359 if (nopnds > 0 && _matrule != NULL && _exprule == NULL) { 1360 const char *name; 1361 uint count; 1362 bool has_dupl_use = false; 1363 1364 _parameters.reset(); 1365 while ((name = _parameters.iter()) != NULL) { 1366 count = 0; 1367 uint position = 0; 1368 uint uniq_position = 0; 1369 _components.reset(); 1370 Component *comp = NULL; 1371 if (sets_result()) { 1372 comp = _components.iter(); 1373 position++; 1374 } 1375 // The next code is copied from the method operand_position(). 1376 for (; (comp = _components.iter()) != NULL; ++position) { 1377 // When the first component is not a DEF, 1378 // leave space for the result operand! 1379 if (position==0 && (!comp->isa(Component::DEF))) { 1380 ++position; 1381 } 1382 if (strcmp(name, comp->_name) == 0) { 1383 if (++count > 1) { 1384 assert(position < _uniq_idx_length, "out of bounds"); 1385 uniq_idx[position] = uniq_position; 1386 has_dupl_use = true; 1387 } else { 1388 uniq_position = position; 1389 } 1390 } 1391 if (comp->isa(Component::DEF) && comp->isa(Component::USE)) { 1392 ++position; 1393 if (position != 1) 1394 --position; // only use two slots for the 1st USE_DEF 1395 } 1396 } 1397 } 1398 if (has_dupl_use) { 1399 for (i = 1; i < nopnds; i++) { 1400 if (i != uniq_idx[i]) { 1401 break; 1402 } 1403 } 1404 uint j = i; 1405 for (; i < nopnds; i++) { 1406 if (i == uniq_idx[i]) { 1407 uniq_idx[i] = j++; 1408 } 1409 } 1410 num_uniq = j; 1411 } 1412 } 1413 _uniq_idx = uniq_idx; 1414 _num_uniq = num_uniq; 1415 } 1416 1417 // Generate index values needed for determining the operand position 1418 void InstructForm::index_temps(FILE *fp, FormDict &globals, const char *prefix, const char *receiver) { 1419 uint idx = 0; // position of operand in match rule 1420 int cur_num_opnds = num_opnds(); 1421 1422 // Compute the index into vector of operand pointers: 1423 // idx0=0 is used to indicate that info comes from this same node, not from input edge. 1424 // idx1 starts at oper_input_base() 1425 if ( cur_num_opnds >= 1 ) { 1426 fprintf(fp," // Start at oper_input_base() and count operands\n"); 1427 fprintf(fp," unsigned %sidx0 = %d;\n", prefix, oper_input_base(globals)); 1428 fprintf(fp," unsigned %sidx1 = %d;", prefix, oper_input_base(globals)); 1429 fprintf(fp," \t// %s\n", unique_opnd_ident(1)); 1430 1431 // Generate starting points for other unique operands if they exist 1432 for ( idx = 2; idx < num_unique_opnds(); ++idx ) { 1433 if( *receiver == 0 ) { 1434 fprintf(fp," unsigned %sidx%d = %sidx%d + opnd_array(%d)->num_edges();", 1435 prefix, idx, prefix, idx-1, idx-1 ); 1436 } else { 1437 fprintf(fp," unsigned %sidx%d = %sidx%d + %s_opnds[%d]->num_edges();", 1438 prefix, idx, prefix, idx-1, receiver, idx-1 ); 1439 } 1440 fprintf(fp," \t// %s\n", unique_opnd_ident(idx)); 1441 } 1442 } 1443 if( *receiver != 0 ) { 1444 // This value is used by generate_peepreplace when copying a node. 1445 // Don't emit it in other cases since it can hide bugs with the 1446 // use invalid idx's. 1447 fprintf(fp," unsigned %sidx%d = %sreq(); \n", prefix, idx, receiver); 1448 } 1449 1450 } 1451 1452 // --------------------------- 1453 bool InstructForm::verify() { 1454 // !!!!! !!!!! 1455 // Check that a "label" operand occurs last in the operand list, if present 1456 return true; 1457 } 1458 1459 void InstructForm::dump() { 1460 output(stderr); 1461 } 1462 1463 void InstructForm::output(FILE *fp) { 1464 fprintf(fp,"\nInstruction: %s\n", (_ident?_ident:"")); 1465 if (_matrule) _matrule->output(fp); 1466 if (_insencode) _insencode->output(fp); 1467 if (_constant) _constant->output(fp); 1468 if (_opcode) _opcode->output(fp); 1469 if (_attribs) _attribs->output(fp); 1470 if (_predicate) _predicate->output(fp); 1471 if (_effects.Size()) { 1472 fprintf(fp,"Effects\n"); 1473 _effects.dump(); 1474 } 1475 if (_exprule) _exprule->output(fp); 1476 if (_rewrule) _rewrule->output(fp); 1477 if (_format) _format->output(fp); 1478 if (_peephole) _peephole->output(fp); 1479 } 1480 1481 void MachNodeForm::dump() { 1482 output(stderr); 1483 } 1484 1485 void MachNodeForm::output(FILE *fp) { 1486 fprintf(fp,"\nMachNode: %s\n", (_ident?_ident:"")); 1487 } 1488 1489 //------------------------------build_predicate-------------------------------- 1490 // Build instruction predicates. If the user uses the same operand name 1491 // twice, we need to check that the operands are pointer-eequivalent in 1492 // the DFA during the labeling process. 1493 Predicate *InstructForm::build_predicate() { 1494 char buf[1024], *s=buf; 1495 Dict names(cmpstr,hashstr,Form::arena); // Map Names to counts 1496 1497 MatchNode *mnode = 1498 strcmp(_matrule->_opType, "Set") ? _matrule : _matrule->_rChild; 1499 mnode->count_instr_names(names); 1500 1501 uint first = 1; 1502 // Start with the predicate supplied in the .ad file. 1503 if( _predicate ) { 1504 if( first ) first=0; 1505 strcpy(s,"("); s += strlen(s); 1506 strcpy(s,_predicate->_pred); 1507 s += strlen(s); 1508 strcpy(s,")"); s += strlen(s); 1509 } 1510 for( DictI i(&names); i.test(); ++i ) { 1511 uintptr_t cnt = (uintptr_t)i._value; 1512 if( cnt > 1 ) { // Need a predicate at all? 1513 assert( cnt == 2, "Unimplemented" ); 1514 // Handle many pairs 1515 if( first ) first=0; 1516 else { // All tests must pass, so use '&&' 1517 strcpy(s," && "); 1518 s += strlen(s); 1519 } 1520 // Add predicate to working buffer 1521 sprintf(s,"/*%s*/(",(char*)i._key); 1522 s += strlen(s); 1523 mnode->build_instr_pred(s,(char*)i._key,0); 1524 s += strlen(s); 1525 strcpy(s," == "); s += strlen(s); 1526 mnode->build_instr_pred(s,(char*)i._key,1); 1527 s += strlen(s); 1528 strcpy(s,")"); s += strlen(s); 1529 } 1530 } 1531 if( s == buf ) s = NULL; 1532 else { 1533 assert( strlen(buf) < sizeof(buf), "String buffer overflow" ); 1534 s = strdup(buf); 1535 } 1536 return new Predicate(s); 1537 } 1538 1539 //------------------------------EncodeForm------------------------------------- 1540 // Constructor 1541 EncodeForm::EncodeForm() 1542 : _encClass(cmpstr,hashstr, Form::arena) { 1543 } 1544 EncodeForm::~EncodeForm() { 1545 } 1546 1547 // record a new register class 1548 EncClass *EncodeForm::add_EncClass(const char *className) { 1549 EncClass *encClass = new EncClass(className); 1550 _eclasses.addName(className); 1551 _encClass.Insert(className,encClass); 1552 return encClass; 1553 } 1554 1555 // Lookup the function body for an encoding class 1556 EncClass *EncodeForm::encClass(const char *className) { 1557 assert( className != NULL, "Must provide a defined encoding name"); 1558 1559 EncClass *encClass = (EncClass*)_encClass[className]; 1560 return encClass; 1561 } 1562 1563 // Lookup the function body for an encoding class 1564 const char *EncodeForm::encClassBody(const char *className) { 1565 if( className == NULL ) return NULL; 1566 1567 EncClass *encClass = (EncClass*)_encClass[className]; 1568 assert( encClass != NULL, "Encode Class is missing."); 1569 encClass->_code.reset(); 1570 const char *code = (const char*)encClass->_code.iter(); 1571 assert( code != NULL, "Found an empty encode class body."); 1572 1573 return code; 1574 } 1575 1576 // Lookup the function body for an encoding class 1577 const char *EncodeForm::encClassPrototype(const char *className) { 1578 assert( className != NULL, "Encode class name must be non NULL."); 1579 1580 return className; 1581 } 1582 1583 void EncodeForm::dump() { // Debug printer 1584 output(stderr); 1585 } 1586 1587 void EncodeForm::output(FILE *fp) { // Write info to output files 1588 const char *name; 1589 fprintf(fp,"\n"); 1590 fprintf(fp,"-------------------- Dump EncodeForm --------------------\n"); 1591 for (_eclasses.reset(); (name = _eclasses.iter()) != NULL;) { 1592 ((EncClass*)_encClass[name])->output(fp); 1593 } 1594 fprintf(fp,"-------------------- end EncodeForm --------------------\n"); 1595 } 1596 //------------------------------EncClass--------------------------------------- 1597 EncClass::EncClass(const char *name) 1598 : _localNames(cmpstr,hashstr, Form::arena), _name(name) { 1599 } 1600 EncClass::~EncClass() { 1601 } 1602 1603 // Add a parameter <type,name> pair 1604 void EncClass::add_parameter(const char *parameter_type, const char *parameter_name) { 1605 _parameter_type.addName( parameter_type ); 1606 _parameter_name.addName( parameter_name ); 1607 } 1608 1609 // Verify operand types in parameter list 1610 bool EncClass::check_parameter_types(FormDict &globals) { 1611 // !!!!! 1612 return false; 1613 } 1614 1615 // Add the decomposed "code" sections of an encoding's code-block 1616 void EncClass::add_code(const char *code) { 1617 _code.addName(code); 1618 } 1619 1620 // Add the decomposed "replacement variables" of an encoding's code-block 1621 void EncClass::add_rep_var(char *replacement_var) { 1622 _code.addName(NameList::_signal); 1623 _rep_vars.addName(replacement_var); 1624 } 1625 1626 // Lookup the function body for an encoding class 1627 int EncClass::rep_var_index(const char *rep_var) { 1628 uint position = 0; 1629 const char *name = NULL; 1630 1631 _parameter_name.reset(); 1632 while ( (name = _parameter_name.iter()) != NULL ) { 1633 if ( strcmp(rep_var,name) == 0 ) return position; 1634 ++position; 1635 } 1636 1637 return -1; 1638 } 1639 1640 // Check after parsing 1641 bool EncClass::verify() { 1642 // 1!!!! 1643 // Check that each replacement variable, '$name' in architecture description 1644 // is actually a local variable for this encode class, or a reserved name 1645 // "primary, secondary, tertiary" 1646 return true; 1647 } 1648 1649 void EncClass::dump() { 1650 output(stderr); 1651 } 1652 1653 // Write info to output files 1654 void EncClass::output(FILE *fp) { 1655 fprintf(fp,"EncClass: %s", (_name ? _name : "")); 1656 1657 // Output the parameter list 1658 _parameter_type.reset(); 1659 _parameter_name.reset(); 1660 const char *type = _parameter_type.iter(); 1661 const char *name = _parameter_name.iter(); 1662 fprintf(fp, " ( "); 1663 for ( ; (type != NULL) && (name != NULL); 1664 (type = _parameter_type.iter()), (name = _parameter_name.iter()) ) { 1665 fprintf(fp, " %s %s,", type, name); 1666 } 1667 fprintf(fp, " ) "); 1668 1669 // Output the code block 1670 _code.reset(); 1671 _rep_vars.reset(); 1672 const char *code; 1673 while ( (code = _code.iter()) != NULL ) { 1674 if ( _code.is_signal(code) ) { 1675 // A replacement variable 1676 const char *rep_var = _rep_vars.iter(); 1677 fprintf(fp,"($%s)", rep_var); 1678 } else { 1679 // A section of code 1680 fprintf(fp,"%s", code); 1681 } 1682 } 1683 1684 } 1685 1686 //------------------------------Opcode----------------------------------------- 1687 Opcode::Opcode(char *primary, char *secondary, char *tertiary) 1688 : _primary(primary), _secondary(secondary), _tertiary(tertiary) { 1689 } 1690 1691 Opcode::~Opcode() { 1692 } 1693 1694 Opcode::opcode_type Opcode::as_opcode_type(const char *param) { 1695 if( strcmp(param,"primary") == 0 ) { 1696 return Opcode::PRIMARY; 1697 } 1698 else if( strcmp(param,"secondary") == 0 ) { 1699 return Opcode::SECONDARY; 1700 } 1701 else if( strcmp(param,"tertiary") == 0 ) { 1702 return Opcode::TERTIARY; 1703 } 1704 return Opcode::NOT_AN_OPCODE; 1705 } 1706 1707 bool Opcode::print_opcode(FILE *fp, Opcode::opcode_type desired_opcode) { 1708 // Default values previously provided by MachNode::primary()... 1709 const char *description = NULL; 1710 const char *value = NULL; 1711 // Check if user provided any opcode definitions 1712 if( this != NULL ) { 1713 // Update 'value' if user provided a definition in the instruction 1714 switch (desired_opcode) { 1715 case PRIMARY: 1716 description = "primary()"; 1717 if( _primary != NULL) { value = _primary; } 1718 break; 1719 case SECONDARY: 1720 description = "secondary()"; 1721 if( _secondary != NULL ) { value = _secondary; } 1722 break; 1723 case TERTIARY: 1724 description = "tertiary()"; 1725 if( _tertiary != NULL ) { value = _tertiary; } 1726 break; 1727 default: 1728 assert( false, "ShouldNotReachHere();"); 1729 break; 1730 } 1731 } 1732 if (value != NULL) { 1733 fprintf(fp, "(%s /*%s*/)", value, description); 1734 } 1735 return value != NULL; 1736 } 1737 1738 void Opcode::dump() { 1739 output(stderr); 1740 } 1741 1742 // Write info to output files 1743 void Opcode::output(FILE *fp) { 1744 if (_primary != NULL) fprintf(fp,"Primary opcode: %s\n", _primary); 1745 if (_secondary != NULL) fprintf(fp,"Secondary opcode: %s\n", _secondary); 1746 if (_tertiary != NULL) fprintf(fp,"Tertiary opcode: %s\n", _tertiary); 1747 } 1748 1749 //------------------------------InsEncode-------------------------------------- 1750 InsEncode::InsEncode() { 1751 } 1752 InsEncode::~InsEncode() { 1753 } 1754 1755 // Add "encode class name" and its parameters 1756 NameAndList *InsEncode::add_encode(char *encoding) { 1757 assert( encoding != NULL, "Must provide name for encoding"); 1758 1759 // add_parameter(NameList::_signal); 1760 NameAndList *encode = new NameAndList(encoding); 1761 _encoding.addName((char*)encode); 1762 1763 return encode; 1764 } 1765 1766 // Access the list of encodings 1767 void InsEncode::reset() { 1768 _encoding.reset(); 1769 // _parameter.reset(); 1770 } 1771 const char* InsEncode::encode_class_iter() { 1772 NameAndList *encode_class = (NameAndList*)_encoding.iter(); 1773 return ( encode_class != NULL ? encode_class->name() : NULL ); 1774 } 1775 // Obtain parameter name from zero based index 1776 const char *InsEncode::rep_var_name(InstructForm &inst, uint param_no) { 1777 NameAndList *params = (NameAndList*)_encoding.current(); 1778 assert( params != NULL, "Internal Error"); 1779 const char *param = (*params)[param_no]; 1780 1781 // Remove '$' if parser placed it there. 1782 return ( param != NULL && *param == '$') ? (param+1) : param; 1783 } 1784 1785 void InsEncode::dump() { 1786 output(stderr); 1787 } 1788 1789 // Write info to output files 1790 void InsEncode::output(FILE *fp) { 1791 NameAndList *encoding = NULL; 1792 const char *parameter = NULL; 1793 1794 fprintf(fp,"InsEncode: "); 1795 _encoding.reset(); 1796 1797 while ( (encoding = (NameAndList*)_encoding.iter()) != 0 ) { 1798 // Output the encoding being used 1799 fprintf(fp,"%s(", encoding->name() ); 1800 1801 // Output its parameter list, if any 1802 bool first_param = true; 1803 encoding->reset(); 1804 while ( (parameter = encoding->iter()) != 0 ) { 1805 // Output the ',' between parameters 1806 if ( ! first_param ) fprintf(fp,", "); 1807 first_param = false; 1808 // Output the parameter 1809 fprintf(fp,"%s", parameter); 1810 } // done with parameters 1811 fprintf(fp,") "); 1812 } // done with encodings 1813 1814 fprintf(fp,"\n"); 1815 } 1816 1817 //------------------------------Effect----------------------------------------- 1818 static int effect_lookup(const char *name) { 1819 if(!strcmp(name, "USE")) return Component::USE; 1820 if(!strcmp(name, "DEF")) return Component::DEF; 1821 if(!strcmp(name, "USE_DEF")) return Component::USE_DEF; 1822 if(!strcmp(name, "KILL")) return Component::KILL; 1823 if(!strcmp(name, "USE_KILL")) return Component::USE_KILL; 1824 if(!strcmp(name, "TEMP")) return Component::TEMP; 1825 if(!strcmp(name, "INVALID")) return Component::INVALID; 1826 if(!strcmp(name, "CALL")) return Component::CALL; 1827 assert( false,"Invalid effect name specified\n"); 1828 return Component::INVALID; 1829 } 1830 1831 const char *Component::getUsedefName() { 1832 switch (_usedef) { 1833 case Component::INVALID: return "INVALID"; break; 1834 case Component::USE: return "USE"; break; 1835 case Component::USE_DEF: return "USE_DEF"; break; 1836 case Component::USE_KILL: return "USE_KILL"; break; 1837 case Component::KILL: return "KILL"; break; 1838 case Component::TEMP: return "TEMP"; break; 1839 case Component::DEF: return "DEF"; break; 1840 case Component::CALL: return "CALL"; break; 1841 default: assert(false, "unknown effect"); 1842 } 1843 return "Undefined Use/Def info"; 1844 } 1845 1846 Effect::Effect(const char *name) : _name(name), _use_def(effect_lookup(name)) { 1847 _ftype = Form::EFF; 1848 } 1849 1850 Effect::~Effect() { 1851 } 1852 1853 // Dynamic type check 1854 Effect *Effect::is_effect() const { 1855 return (Effect*)this; 1856 } 1857 1858 1859 // True if this component is equal to the parameter. 1860 bool Effect::is(int use_def_kill_enum) const { 1861 return (_use_def == use_def_kill_enum ? true : false); 1862 } 1863 // True if this component is used/def'd/kill'd as the parameter suggests. 1864 bool Effect::isa(int use_def_kill_enum) const { 1865 return (_use_def & use_def_kill_enum) == use_def_kill_enum; 1866 } 1867 1868 void Effect::dump() { 1869 output(stderr); 1870 } 1871 1872 void Effect::output(FILE *fp) { // Write info to output files 1873 fprintf(fp,"Effect: %s\n", (_name?_name:"")); 1874 } 1875 1876 //------------------------------ExpandRule------------------------------------- 1877 ExpandRule::ExpandRule() : _expand_instrs(), 1878 _newopconst(cmpstr, hashstr, Form::arena) { 1879 _ftype = Form::EXP; 1880 } 1881 1882 ExpandRule::~ExpandRule() { // Destructor 1883 } 1884 1885 void ExpandRule::add_instruction(NameAndList *instruction_name_and_operand_list) { 1886 _expand_instrs.addName((char*)instruction_name_and_operand_list); 1887 } 1888 1889 void ExpandRule::reset_instructions() { 1890 _expand_instrs.reset(); 1891 } 1892 1893 NameAndList* ExpandRule::iter_instructions() { 1894 return (NameAndList*)_expand_instrs.iter(); 1895 } 1896 1897 1898 void ExpandRule::dump() { 1899 output(stderr); 1900 } 1901 1902 void ExpandRule::output(FILE *fp) { // Write info to output files 1903 NameAndList *expand_instr = NULL; 1904 const char *opid = NULL; 1905 1906 fprintf(fp,"\nExpand Rule:\n"); 1907 1908 // Iterate over the instructions 'node' expands into 1909 for(reset_instructions(); (expand_instr = iter_instructions()) != NULL; ) { 1910 fprintf(fp,"%s(", expand_instr->name()); 1911 1912 // iterate over the operand list 1913 for( expand_instr->reset(); (opid = expand_instr->iter()) != NULL; ) { 1914 fprintf(fp,"%s ", opid); 1915 } 1916 fprintf(fp,");\n"); 1917 } 1918 } 1919 1920 //------------------------------RewriteRule------------------------------------ 1921 RewriteRule::RewriteRule(char* params, char* block) 1922 : _tempParams(params), _tempBlock(block) { }; // Constructor 1923 RewriteRule::~RewriteRule() { // Destructor 1924 } 1925 1926 void RewriteRule::dump() { 1927 output(stderr); 1928 } 1929 1930 void RewriteRule::output(FILE *fp) { // Write info to output files 1931 fprintf(fp,"\nRewrite Rule:\n%s\n%s\n", 1932 (_tempParams?_tempParams:""), 1933 (_tempBlock?_tempBlock:"")); 1934 } 1935 1936 1937 //==============================MachNodes====================================== 1938 //------------------------------MachNodeForm----------------------------------- 1939 MachNodeForm::MachNodeForm(char *id) 1940 : _ident(id) { 1941 } 1942 1943 MachNodeForm::~MachNodeForm() { 1944 } 1945 1946 MachNodeForm *MachNodeForm::is_machnode() const { 1947 return (MachNodeForm*)this; 1948 } 1949 1950 //==============================Operand Classes================================ 1951 //------------------------------OpClassForm------------------------------------ 1952 OpClassForm::OpClassForm(const char* id) : _ident(id) { 1953 _ftype = Form::OPCLASS; 1954 } 1955 1956 OpClassForm::~OpClassForm() { 1957 } 1958 1959 bool OpClassForm::ideal_only() const { return 0; } 1960 1961 OpClassForm *OpClassForm::is_opclass() const { 1962 return (OpClassForm*)this; 1963 } 1964 1965 Form::InterfaceType OpClassForm::interface_type(FormDict &globals) const { 1966 if( _oplst.count() == 0 ) return Form::no_interface; 1967 1968 // Check that my operands have the same interface type 1969 Form::InterfaceType interface; 1970 bool first = true; 1971 NameList &op_list = (NameList &)_oplst; 1972 op_list.reset(); 1973 const char *op_name; 1974 while( (op_name = op_list.iter()) != NULL ) { 1975 const Form *form = globals[op_name]; 1976 OperandForm *operand = form->is_operand(); 1977 assert( operand, "Entry in operand class that is not an operand"); 1978 if( first ) { 1979 first = false; 1980 interface = operand->interface_type(globals); 1981 } else { 1982 interface = (interface == operand->interface_type(globals) ? interface : Form::no_interface); 1983 } 1984 } 1985 return interface; 1986 } 1987 1988 bool OpClassForm::stack_slots_only(FormDict &globals) const { 1989 if( _oplst.count() == 0 ) return false; // how? 1990 1991 NameList &op_list = (NameList &)_oplst; 1992 op_list.reset(); 1993 const char *op_name; 1994 while( (op_name = op_list.iter()) != NULL ) { 1995 const Form *form = globals[op_name]; 1996 OperandForm *operand = form->is_operand(); 1997 assert( operand, "Entry in operand class that is not an operand"); 1998 if( !operand->stack_slots_only(globals) ) return false; 1999 } 2000 return true; 2001 } 2002 2003 2004 void OpClassForm::dump() { 2005 output(stderr); 2006 } 2007 2008 void OpClassForm::output(FILE *fp) { 2009 const char *name; 2010 fprintf(fp,"\nOperand Class: %s\n", (_ident?_ident:"")); 2011 fprintf(fp,"\nCount = %d\n", _oplst.count()); 2012 for(_oplst.reset(); (name = _oplst.iter()) != NULL;) { 2013 fprintf(fp,"%s, ",name); 2014 } 2015 fprintf(fp,"\n"); 2016 } 2017 2018 2019 //==============================Operands======================================= 2020 //------------------------------OperandForm------------------------------------ 2021 OperandForm::OperandForm(const char* id) 2022 : OpClassForm(id), _ideal_only(false), 2023 _localNames(cmpstr, hashstr, Form::arena) { 2024 _ftype = Form::OPER; 2025 2026 _matrule = NULL; 2027 _interface = NULL; 2028 _attribs = NULL; 2029 _predicate = NULL; 2030 _constraint= NULL; 2031 _construct = NULL; 2032 _format = NULL; 2033 } 2034 OperandForm::OperandForm(const char* id, bool ideal_only) 2035 : OpClassForm(id), _ideal_only(ideal_only), 2036 _localNames(cmpstr, hashstr, Form::arena) { 2037 _ftype = Form::OPER; 2038 2039 _matrule = NULL; 2040 _interface = NULL; 2041 _attribs = NULL; 2042 _predicate = NULL; 2043 _constraint= NULL; 2044 _construct = NULL; 2045 _format = NULL; 2046 } 2047 OperandForm::~OperandForm() { 2048 } 2049 2050 2051 OperandForm *OperandForm::is_operand() const { 2052 return (OperandForm*)this; 2053 } 2054 2055 bool OperandForm::ideal_only() const { 2056 return _ideal_only; 2057 } 2058 2059 Form::InterfaceType OperandForm::interface_type(FormDict &globals) const { 2060 if( _interface == NULL ) return Form::no_interface; 2061 2062 return _interface->interface_type(globals); 2063 } 2064 2065 2066 bool OperandForm::stack_slots_only(FormDict &globals) const { 2067 if( _constraint == NULL ) return false; 2068 return _constraint->stack_slots_only(); 2069 } 2070 2071 2072 // Access op_cost attribute or return NULL. 2073 const char* OperandForm::cost() { 2074 for (Attribute* cur = _attribs; cur != NULL; cur = (Attribute*)cur->_next) { 2075 if( strcmp(cur->_ident,AttributeForm::_op_cost) == 0 ) { 2076 return cur->_val; 2077 } 2078 } 2079 return NULL; 2080 } 2081 2082 // Return the number of leaves below this complex operand 2083 uint OperandForm::num_leaves() const { 2084 if ( ! _matrule) return 0; 2085 2086 int num_leaves = _matrule->_numleaves; 2087 return num_leaves; 2088 } 2089 2090 // Return the number of constants contained within this complex operand 2091 uint OperandForm::num_consts(FormDict &globals) const { 2092 if ( ! _matrule) return 0; 2093 2094 // This is a recursive invocation on all operands in the matchrule 2095 return _matrule->num_consts(globals); 2096 } 2097 2098 // Return the number of constants in match rule with specified type 2099 uint OperandForm::num_consts(FormDict &globals, Form::DataType type) const { 2100 if ( ! _matrule) return 0; 2101 2102 // This is a recursive invocation on all operands in the matchrule 2103 return _matrule->num_consts(globals, type); 2104 } 2105 2106 // Return the number of pointer constants contained within this complex operand 2107 uint OperandForm::num_const_ptrs(FormDict &globals) const { 2108 if ( ! _matrule) return 0; 2109 2110 // This is a recursive invocation on all operands in the matchrule 2111 return _matrule->num_const_ptrs(globals); 2112 } 2113 2114 uint OperandForm::num_edges(FormDict &globals) const { 2115 uint edges = 0; 2116 uint leaves = num_leaves(); 2117 uint consts = num_consts(globals); 2118 2119 // If we are matching a constant directly, there are no leaves. 2120 edges = ( leaves > consts ) ? leaves - consts : 0; 2121 2122 // !!!!! 2123 // Special case operands that do not have a corresponding ideal node. 2124 if( (edges == 0) && (consts == 0) ) { 2125 if( constrained_reg_class() != NULL ) { 2126 edges = 1; 2127 } else { 2128 if( _matrule 2129 && (_matrule->_lChild == NULL) && (_matrule->_rChild == NULL) ) { 2130 const Form *form = globals[_matrule->_opType]; 2131 OperandForm *oper = form ? form->is_operand() : NULL; 2132 if( oper ) { 2133 return oper->num_edges(globals); 2134 } 2135 } 2136 } 2137 } 2138 2139 return edges; 2140 } 2141 2142 2143 // Check if this operand is usable for cisc-spilling 2144 bool OperandForm::is_cisc_reg(FormDict &globals) const { 2145 const char *ideal = ideal_type(globals); 2146 bool is_cisc_reg = (ideal && (ideal_to_Reg_type(ideal) != none)); 2147 return is_cisc_reg; 2148 } 2149 2150 bool OpClassForm::is_cisc_mem(FormDict &globals) const { 2151 Form::InterfaceType my_interface = interface_type(globals); 2152 return (my_interface == memory_interface); 2153 } 2154 2155 2156 // node matches ideal 'Bool' 2157 bool OperandForm::is_ideal_bool() const { 2158 if( _matrule == NULL ) return false; 2159 2160 return _matrule->is_ideal_bool(); 2161 } 2162 2163 // Require user's name for an sRegX to be stackSlotX 2164 Form::DataType OperandForm::is_user_name_for_sReg() const { 2165 DataType data_type = none; 2166 if( _ident != NULL ) { 2167 if( strcmp(_ident,"stackSlotI") == 0 ) data_type = Form::idealI; 2168 else if( strcmp(_ident,"stackSlotP") == 0 ) data_type = Form::idealP; 2169 else if( strcmp(_ident,"stackSlotD") == 0 ) data_type = Form::idealD; 2170 else if( strcmp(_ident,"stackSlotF") == 0 ) data_type = Form::idealF; 2171 else if( strcmp(_ident,"stackSlotL") == 0 ) data_type = Form::idealL; 2172 } 2173 assert((data_type == none) || (_matrule == NULL), "No match-rule for stackSlotX"); 2174 2175 return data_type; 2176 } 2177 2178 2179 // Return ideal type, if there is a single ideal type for this operand 2180 const char *OperandForm::ideal_type(FormDict &globals, RegisterForm *registers) const { 2181 const char *type = NULL; 2182 if (ideal_only()) type = _ident; 2183 else if( _matrule == NULL ) { 2184 // Check for condition code register 2185 const char *rc_name = constrained_reg_class(); 2186 // !!!!! 2187 if (rc_name == NULL) return NULL; 2188 // !!!!! !!!!! 2189 // Check constraints on result's register class 2190 if( registers ) { 2191 RegClass *reg_class = registers->getRegClass(rc_name); 2192 assert( reg_class != NULL, "Register class is not defined"); 2193 2194 // Check for ideal type of entries in register class, all are the same type 2195 reg_class->reset(); 2196 RegDef *reg_def = reg_class->RegDef_iter(); 2197 assert( reg_def != NULL, "No entries in register class"); 2198 assert( reg_def->_idealtype != NULL, "Did not define ideal type for register"); 2199 // Return substring that names the register's ideal type 2200 type = reg_def->_idealtype + 3; 2201 assert( *(reg_def->_idealtype + 0) == 'O', "Expect Op_ prefix"); 2202 assert( *(reg_def->_idealtype + 1) == 'p', "Expect Op_ prefix"); 2203 assert( *(reg_def->_idealtype + 2) == '_', "Expect Op_ prefix"); 2204 } 2205 } 2206 else if( _matrule->_lChild == NULL && _matrule->_rChild == NULL ) { 2207 // This operand matches a single type, at the top level. 2208 // Check for ideal type 2209 type = _matrule->_opType; 2210 if( strcmp(type,"Bool") == 0 ) 2211 return "Bool"; 2212 // transitive lookup 2213 const Form *frm = globals[type]; 2214 OperandForm *op = frm->is_operand(); 2215 type = op->ideal_type(globals, registers); 2216 } 2217 return type; 2218 } 2219 2220 2221 // If there is a single ideal type for this interface field, return it. 2222 const char *OperandForm::interface_ideal_type(FormDict &globals, 2223 const char *field) const { 2224 const char *ideal_type = NULL; 2225 const char *value = NULL; 2226 2227 // Check if "field" is valid for this operand's interface 2228 if ( ! is_interface_field(field, value) ) return ideal_type; 2229 2230 // !!!!! !!!!! !!!!! 2231 // If a valid field has a constant value, identify "ConI" or "ConP" or ... 2232 2233 // Else, lookup type of field's replacement variable 2234 2235 return ideal_type; 2236 } 2237 2238 2239 RegClass* OperandForm::get_RegClass() const { 2240 if (_interface && !_interface->is_RegInterface()) return NULL; 2241 return globalAD->get_registers()->getRegClass(constrained_reg_class()); 2242 } 2243 2244 2245 bool OperandForm::is_bound_register() const { 2246 RegClass* reg_class = get_RegClass(); 2247 if (reg_class == NULL) { 2248 return false; 2249 } 2250 2251 const char* name = ideal_type(globalAD->globalNames()); 2252 if (name == NULL) { 2253 return false; 2254 } 2255 2256 uint size = 0; 2257 if (strcmp(name, "RegFlags") == 0) size = 1; 2258 if (strcmp(name, "RegI") == 0) size = 1; 2259 if (strcmp(name, "RegF") == 0) size = 1; 2260 if (strcmp(name, "RegD") == 0) size = 2; 2261 if (strcmp(name, "RegL") == 0) size = 2; 2262 if (strcmp(name, "RegN") == 0) size = 1; 2263 if (strcmp(name, "RegP") == 0) size = globalAD->get_preproc_def("_LP64") ? 2 : 1; 2264 if (size == 0) { 2265 return false; 2266 } 2267 return size == reg_class->size(); 2268 } 2269 2270 2271 // Check if this is a valid field for this operand, 2272 // Return 'true' if valid, and set the value to the string the user provided. 2273 bool OperandForm::is_interface_field(const char *field, 2274 const char * &value) const { 2275 return false; 2276 } 2277 2278 2279 // Return register class name if a constraint specifies the register class. 2280 const char *OperandForm::constrained_reg_class() const { 2281 const char *reg_class = NULL; 2282 if ( _constraint ) { 2283 // !!!!! 2284 Constraint *constraint = _constraint; 2285 if ( strcmp(_constraint->_func,"ALLOC_IN_RC") == 0 ) { 2286 reg_class = _constraint->_arg; 2287 } 2288 } 2289 2290 return reg_class; 2291 } 2292 2293 2294 // Return the register class associated with 'leaf'. 2295 const char *OperandForm::in_reg_class(uint leaf, FormDict &globals) { 2296 const char *reg_class = NULL; // "RegMask::Empty"; 2297 2298 if((_matrule == NULL) || (_matrule->is_chain_rule(globals))) { 2299 reg_class = constrained_reg_class(); 2300 return reg_class; 2301 } 2302 const char *result = NULL; 2303 const char *name = NULL; 2304 const char *type = NULL; 2305 // iterate through all base operands 2306 // until we reach the register that corresponds to "leaf" 2307 // This function is not looking for an ideal type. It needs the first 2308 // level user type associated with the leaf. 2309 for(uint idx = 0;_matrule->base_operand(idx,globals,result,name,type);++idx) { 2310 const Form *form = (_localNames[name] ? _localNames[name] : globals[result]); 2311 OperandForm *oper = form ? form->is_operand() : NULL; 2312 if( oper ) { 2313 reg_class = oper->constrained_reg_class(); 2314 if( reg_class ) { 2315 reg_class = reg_class; 2316 } else { 2317 // ShouldNotReachHere(); 2318 } 2319 } else { 2320 // ShouldNotReachHere(); 2321 } 2322 2323 // Increment our target leaf position if current leaf is not a candidate. 2324 if( reg_class == NULL) ++leaf; 2325 // Exit the loop with the value of reg_class when at the correct index 2326 if( idx == leaf ) break; 2327 // May iterate through all base operands if reg_class for 'leaf' is NULL 2328 } 2329 return reg_class; 2330 } 2331 2332 2333 // Recursive call to construct list of top-level operands. 2334 // Implementation does not modify state of internal structures 2335 void OperandForm::build_components() { 2336 if (_matrule) _matrule->append_components(_localNames, _components); 2337 2338 // Add parameters that "do not appear in match rule". 2339 const char *name; 2340 for (_parameters.reset(); (name = _parameters.iter()) != NULL;) { 2341 OperandForm *opForm = (OperandForm*)_localNames[name]; 2342 2343 if ( _components.operand_position(name) == -1 ) { 2344 _components.insert(name, opForm->_ident, Component::INVALID, false); 2345 } 2346 } 2347 2348 return; 2349 } 2350 2351 int OperandForm::operand_position(const char *name, int usedef) { 2352 return _components.operand_position(name, usedef, this); 2353 } 2354 2355 2356 // Return zero-based position in component list, only counting constants; 2357 // Return -1 if not in list. 2358 int OperandForm::constant_position(FormDict &globals, const Component *last) { 2359 // Iterate through components and count constants preceding 'constant' 2360 int position = 0; 2361 Component *comp; 2362 _components.reset(); 2363 while( (comp = _components.iter()) != NULL && (comp != last) ) { 2364 // Special case for operands that take a single user-defined operand 2365 // Skip the initial definition in the component list. 2366 if( strcmp(comp->_name,this->_ident) == 0 ) continue; 2367 2368 const char *type = comp->_type; 2369 // Lookup operand form for replacement variable's type 2370 const Form *form = globals[type]; 2371 assert( form != NULL, "Component's type not found"); 2372 OperandForm *oper = form ? form->is_operand() : NULL; 2373 if( oper ) { 2374 if( oper->_matrule->is_base_constant(globals) != Form::none ) { 2375 ++position; 2376 } 2377 } 2378 } 2379 2380 // Check for being passed a component that was not in the list 2381 if( comp != last ) position = -1; 2382 2383 return position; 2384 } 2385 // Provide position of constant by "name" 2386 int OperandForm::constant_position(FormDict &globals, const char *name) { 2387 const Component *comp = _components.search(name); 2388 int idx = constant_position( globals, comp ); 2389 2390 return idx; 2391 } 2392 2393 2394 // Return zero-based position in component list, only counting constants; 2395 // Return -1 if not in list. 2396 int OperandForm::register_position(FormDict &globals, const char *reg_name) { 2397 // Iterate through components and count registers preceding 'last' 2398 uint position = 0; 2399 Component *comp; 2400 _components.reset(); 2401 while( (comp = _components.iter()) != NULL 2402 && (strcmp(comp->_name,reg_name) != 0) ) { 2403 // Special case for operands that take a single user-defined operand 2404 // Skip the initial definition in the component list. 2405 if( strcmp(comp->_name,this->_ident) == 0 ) continue; 2406 2407 const char *type = comp->_type; 2408 // Lookup operand form for component's type 2409 const Form *form = globals[type]; 2410 assert( form != NULL, "Component's type not found"); 2411 OperandForm *oper = form ? form->is_operand() : NULL; 2412 if( oper ) { 2413 if( oper->_matrule->is_base_register(globals) ) { 2414 ++position; 2415 } 2416 } 2417 } 2418 2419 return position; 2420 } 2421 2422 2423 const char *OperandForm::reduce_result() const { 2424 return _ident; 2425 } 2426 // Return the name of the operand on the right hand side of the binary match 2427 // Return NULL if there is no right hand side 2428 const char *OperandForm::reduce_right(FormDict &globals) const { 2429 return ( _matrule ? _matrule->reduce_right(globals) : NULL ); 2430 } 2431 2432 // Similar for left 2433 const char *OperandForm::reduce_left(FormDict &globals) const { 2434 return ( _matrule ? _matrule->reduce_left(globals) : NULL ); 2435 } 2436 2437 2438 // --------------------------- FILE *output_routines 2439 // 2440 // Output code for disp_is_oop, if true. 2441 void OperandForm::disp_is_oop(FILE *fp, FormDict &globals) { 2442 // Check it is a memory interface with a non-user-constant disp field 2443 if ( this->_interface == NULL ) return; 2444 MemInterface *mem_interface = this->_interface->is_MemInterface(); 2445 if ( mem_interface == NULL ) return; 2446 const char *disp = mem_interface->_disp; 2447 if ( *disp != '$' ) return; 2448 2449 // Lookup replacement variable in operand's component list 2450 const char *rep_var = disp + 1; 2451 const Component *comp = this->_components.search(rep_var); 2452 assert( comp != NULL, "Replacement variable not found in components"); 2453 // Lookup operand form for replacement variable's type 2454 const char *type = comp->_type; 2455 Form *form = (Form*)globals[type]; 2456 assert( form != NULL, "Replacement variable's type not found"); 2457 OperandForm *op = form->is_operand(); 2458 assert( op, "Memory Interface 'disp' can only emit an operand form"); 2459 // Check if this is a ConP, which may require relocation 2460 if ( op->is_base_constant(globals) == Form::idealP ) { 2461 // Find the constant's index: _c0, _c1, _c2, ... , _cN 2462 uint idx = op->constant_position( globals, rep_var); 2463 fprintf(fp," virtual relocInfo::relocType disp_reloc() const {"); 2464 fprintf(fp, " return _c%d->reloc();", idx); 2465 fprintf(fp, " }\n"); 2466 } 2467 } 2468 2469 // Generate code for internal and external format methods 2470 // 2471 // internal access to reg# node->_idx 2472 // access to subsumed constant _c0, _c1, 2473 void OperandForm::int_format(FILE *fp, FormDict &globals, uint index) { 2474 Form::DataType dtype; 2475 if (_matrule && (_matrule->is_base_register(globals) || 2476 strcmp(ideal_type(globalAD->globalNames()), "RegFlags") == 0)) { 2477 // !!!!! !!!!! 2478 fprintf(fp," { char reg_str[128];\n"); 2479 fprintf(fp," ra->dump_register(node,reg_str);\n"); 2480 fprintf(fp," st->print(\"%cs\",reg_str);\n",'%'); 2481 fprintf(fp," }\n"); 2482 } else if (_matrule && (dtype = _matrule->is_base_constant(globals)) != Form::none) { 2483 format_constant( fp, index, dtype ); 2484 } else if (ideal_to_sReg_type(_ident) != Form::none) { 2485 // Special format for Stack Slot Register 2486 fprintf(fp," { char reg_str[128];\n"); 2487 fprintf(fp," ra->dump_register(node,reg_str);\n"); 2488 fprintf(fp," st->print(\"%cs\",reg_str);\n",'%'); 2489 fprintf(fp," }\n"); 2490 } else { 2491 fprintf(fp," st->print(\"No format defined for %s\n\");\n", _ident); 2492 fflush(fp); 2493 fprintf(stderr,"No format defined for %s\n", _ident); 2494 dump(); 2495 assert( false,"Internal error:\n output_internal_operand() attempting to output other than a Register or Constant"); 2496 } 2497 } 2498 2499 // Similar to "int_format" but for cases where data is external to operand 2500 // external access to reg# node->in(idx)->_idx, 2501 void OperandForm::ext_format(FILE *fp, FormDict &globals, uint index) { 2502 Form::DataType dtype; 2503 if (_matrule && (_matrule->is_base_register(globals) || 2504 strcmp(ideal_type(globalAD->globalNames()), "RegFlags") == 0)) { 2505 fprintf(fp," { char reg_str[128];\n"); 2506 fprintf(fp," ra->dump_register(node->in(idx"); 2507 if ( index != 0 ) fprintf(fp, "+%d",index); 2508 fprintf(fp, "),reg_str);\n"); 2509 fprintf(fp," st->print(\"%cs\",reg_str);\n",'%'); 2510 fprintf(fp," }\n"); 2511 } else if (_matrule && (dtype = _matrule->is_base_constant(globals)) != Form::none) { 2512 format_constant( fp, index, dtype ); 2513 } else if (ideal_to_sReg_type(_ident) != Form::none) { 2514 // Special format for Stack Slot Register 2515 fprintf(fp," { char reg_str[128];\n"); 2516 fprintf(fp," ra->dump_register(node->in(idx"); 2517 if ( index != 0 ) fprintf(fp, "+%d",index); 2518 fprintf(fp, "),reg_str);\n"); 2519 fprintf(fp," st->print(\"%cs\",reg_str);\n",'%'); 2520 fprintf(fp," }\n"); 2521 } else { 2522 fprintf(fp," st->print(\"No format defined for %s\n\");\n", _ident); 2523 assert( false,"Internal error:\n output_external_operand() attempting to output other than a Register or Constant"); 2524 } 2525 } 2526 2527 void OperandForm::format_constant(FILE *fp, uint const_index, uint const_type) { 2528 switch(const_type) { 2529 case Form::idealI: fprintf(fp," st->print(\"#%%d\", _c%d);\n", const_index); break; 2530 case Form::idealP: fprintf(fp," if (_c%d) _c%d->dump_on(st);\n", const_index, const_index); break; 2531 case Form::idealNKlass: 2532 case Form::idealN: fprintf(fp," if (_c%d) _c%d->dump_on(st);\n", const_index, const_index); break; 2533 case Form::idealL: fprintf(fp," st->print(\"#\" INT64_FORMAT, (int64_t)_c%d);\n", const_index); break; 2534 case Form::idealF: fprintf(fp," st->print(\"#%%f\", _c%d);\n", const_index); break; 2535 case Form::idealD: fprintf(fp," st->print(\"#%%f\", _c%d);\n", const_index); break; 2536 default: 2537 assert( false, "ShouldNotReachHere()"); 2538 } 2539 } 2540 2541 // Return the operand form corresponding to the given index, else NULL. 2542 OperandForm *OperandForm::constant_operand(FormDict &globals, 2543 uint index) { 2544 // !!!!! 2545 // Check behavior on complex operands 2546 uint n_consts = num_consts(globals); 2547 if( n_consts > 0 ) { 2548 uint i = 0; 2549 const char *type; 2550 Component *comp; 2551 _components.reset(); 2552 if ((comp = _components.iter()) == NULL) { 2553 assert(n_consts == 1, "Bad component list detected.\n"); 2554 // Current operand is THE operand 2555 if ( index == 0 ) { 2556 return this; 2557 } 2558 } // end if NULL 2559 else { 2560 // Skip the first component, it can not be a DEF of a constant 2561 do { 2562 type = comp->base_type(globals); 2563 // Check that "type" is a 'ConI', 'ConP', ... 2564 if ( ideal_to_const_type(type) != Form::none ) { 2565 // When at correct component, get corresponding Operand 2566 if ( index == 0 ) { 2567 return globals[comp->_type]->is_operand(); 2568 } 2569 // Decrement number of constants to go 2570 --index; 2571 } 2572 } while((comp = _components.iter()) != NULL); 2573 } 2574 } 2575 2576 // Did not find a constant for this index. 2577 return NULL; 2578 } 2579 2580 // If this operand has a single ideal type, return its type 2581 Form::DataType OperandForm::simple_type(FormDict &globals) const { 2582 const char *type_name = ideal_type(globals); 2583 Form::DataType type = type_name ? ideal_to_const_type( type_name ) 2584 : Form::none; 2585 return type; 2586 } 2587 2588 Form::DataType OperandForm::is_base_constant(FormDict &globals) const { 2589 if ( _matrule == NULL ) return Form::none; 2590 2591 return _matrule->is_base_constant(globals); 2592 } 2593 2594 // "true" if this operand is a simple type that is swallowed 2595 bool OperandForm::swallowed(FormDict &globals) const { 2596 Form::DataType type = simple_type(globals); 2597 if( type != Form::none ) { 2598 return true; 2599 } 2600 2601 return false; 2602 } 2603 2604 // Output code to access the value of the index'th constant 2605 void OperandForm::access_constant(FILE *fp, FormDict &globals, 2606 uint const_index) { 2607 OperandForm *oper = constant_operand(globals, const_index); 2608 assert( oper, "Index exceeds number of constants in operand"); 2609 Form::DataType dtype = oper->is_base_constant(globals); 2610 2611 switch(dtype) { 2612 case idealI: fprintf(fp,"_c%d", const_index); break; 2613 case idealP: fprintf(fp,"_c%d->get_con()",const_index); break; 2614 case idealL: fprintf(fp,"_c%d", const_index); break; 2615 case idealF: fprintf(fp,"_c%d", const_index); break; 2616 case idealD: fprintf(fp,"_c%d", const_index); break; 2617 default: 2618 assert( false, "ShouldNotReachHere()"); 2619 } 2620 } 2621 2622 2623 void OperandForm::dump() { 2624 output(stderr); 2625 } 2626 2627 void OperandForm::output(FILE *fp) { 2628 fprintf(fp,"\nOperand: %s\n", (_ident?_ident:"")); 2629 if (_matrule) _matrule->dump(); 2630 if (_interface) _interface->dump(); 2631 if (_attribs) _attribs->dump(); 2632 if (_predicate) _predicate->dump(); 2633 if (_constraint) _constraint->dump(); 2634 if (_construct) _construct->dump(); 2635 if (_format) _format->dump(); 2636 } 2637 2638 //------------------------------Constraint------------------------------------- 2639 Constraint::Constraint(const char *func, const char *arg) 2640 : _func(func), _arg(arg) { 2641 } 2642 Constraint::~Constraint() { /* not owner of char* */ 2643 } 2644 2645 bool Constraint::stack_slots_only() const { 2646 return strcmp(_func, "ALLOC_IN_RC") == 0 2647 && strcmp(_arg, "stack_slots") == 0; 2648 } 2649 2650 void Constraint::dump() { 2651 output(stderr); 2652 } 2653 2654 void Constraint::output(FILE *fp) { // Write info to output files 2655 assert((_func != NULL && _arg != NULL),"missing constraint function or arg"); 2656 fprintf(fp,"Constraint: %s ( %s )\n", _func, _arg); 2657 } 2658 2659 //------------------------------Predicate-------------------------------------- 2660 Predicate::Predicate(char *pr) 2661 : _pred(pr) { 2662 } 2663 Predicate::~Predicate() { 2664 } 2665 2666 void Predicate::dump() { 2667 output(stderr); 2668 } 2669 2670 void Predicate::output(FILE *fp) { 2671 fprintf(fp,"Predicate"); // Write to output files 2672 } 2673 //------------------------------Interface-------------------------------------- 2674 Interface::Interface(const char *name) : _name(name) { 2675 } 2676 Interface::~Interface() { 2677 } 2678 2679 Form::InterfaceType Interface::interface_type(FormDict &globals) const { 2680 Interface *thsi = (Interface*)this; 2681 if ( thsi->is_RegInterface() ) return Form::register_interface; 2682 if ( thsi->is_MemInterface() ) return Form::memory_interface; 2683 if ( thsi->is_ConstInterface() ) return Form::constant_interface; 2684 if ( thsi->is_CondInterface() ) return Form::conditional_interface; 2685 2686 return Form::no_interface; 2687 } 2688 2689 RegInterface *Interface::is_RegInterface() { 2690 if ( strcmp(_name,"REG_INTER") != 0 ) 2691 return NULL; 2692 return (RegInterface*)this; 2693 } 2694 MemInterface *Interface::is_MemInterface() { 2695 if ( strcmp(_name,"MEMORY_INTER") != 0 ) return NULL; 2696 return (MemInterface*)this; 2697 } 2698 ConstInterface *Interface::is_ConstInterface() { 2699 if ( strcmp(_name,"CONST_INTER") != 0 ) return NULL; 2700 return (ConstInterface*)this; 2701 } 2702 CondInterface *Interface::is_CondInterface() { 2703 if ( strcmp(_name,"COND_INTER") != 0 ) return NULL; 2704 return (CondInterface*)this; 2705 } 2706 2707 2708 void Interface::dump() { 2709 output(stderr); 2710 } 2711 2712 // Write info to output files 2713 void Interface::output(FILE *fp) { 2714 fprintf(fp,"Interface: %s\n", (_name ? _name : "") ); 2715 } 2716 2717 //------------------------------RegInterface----------------------------------- 2718 RegInterface::RegInterface() : Interface("REG_INTER") { 2719 } 2720 RegInterface::~RegInterface() { 2721 } 2722 2723 void RegInterface::dump() { 2724 output(stderr); 2725 } 2726 2727 // Write info to output files 2728 void RegInterface::output(FILE *fp) { 2729 Interface::output(fp); 2730 } 2731 2732 //------------------------------ConstInterface--------------------------------- 2733 ConstInterface::ConstInterface() : Interface("CONST_INTER") { 2734 } 2735 ConstInterface::~ConstInterface() { 2736 } 2737 2738 void ConstInterface::dump() { 2739 output(stderr); 2740 } 2741 2742 // Write info to output files 2743 void ConstInterface::output(FILE *fp) { 2744 Interface::output(fp); 2745 } 2746 2747 //------------------------------MemInterface----------------------------------- 2748 MemInterface::MemInterface(char *base, char *index, char *scale, char *disp) 2749 : Interface("MEMORY_INTER"), _base(base), _index(index), _scale(scale), _disp(disp) { 2750 } 2751 MemInterface::~MemInterface() { 2752 // not owner of any character arrays 2753 } 2754 2755 void MemInterface::dump() { 2756 output(stderr); 2757 } 2758 2759 // Write info to output files 2760 void MemInterface::output(FILE *fp) { 2761 Interface::output(fp); 2762 if ( _base != NULL ) fprintf(fp," base == %s\n", _base); 2763 if ( _index != NULL ) fprintf(fp," index == %s\n", _index); 2764 if ( _scale != NULL ) fprintf(fp," scale == %s\n", _scale); 2765 if ( _disp != NULL ) fprintf(fp," disp == %s\n", _disp); 2766 // fprintf(fp,"\n"); 2767 } 2768 2769 //------------------------------CondInterface---------------------------------- 2770 CondInterface::CondInterface(const char* equal, const char* equal_format, 2771 const char* not_equal, const char* not_equal_format, 2772 const char* less, const char* less_format, 2773 const char* greater_equal, const char* greater_equal_format, 2774 const char* less_equal, const char* less_equal_format, 2775 const char* greater, const char* greater_format, 2776 const char* overflow, const char* overflow_format, 2777 const char* no_overflow, const char* no_overflow_format) 2778 : Interface("COND_INTER"), 2779 _equal(equal), _equal_format(equal_format), 2780 _not_equal(not_equal), _not_equal_format(not_equal_format), 2781 _less(less), _less_format(less_format), 2782 _greater_equal(greater_equal), _greater_equal_format(greater_equal_format), 2783 _less_equal(less_equal), _less_equal_format(less_equal_format), 2784 _greater(greater), _greater_format(greater_format), 2785 _overflow(overflow), _overflow_format(overflow_format), 2786 _no_overflow(no_overflow), _no_overflow_format(no_overflow_format) { 2787 } 2788 CondInterface::~CondInterface() { 2789 // not owner of any character arrays 2790 } 2791 2792 void CondInterface::dump() { 2793 output(stderr); 2794 } 2795 2796 // Write info to output files 2797 void CondInterface::output(FILE *fp) { 2798 Interface::output(fp); 2799 if ( _equal != NULL ) fprintf(fp," equal == %s\n", _equal); 2800 if ( _not_equal != NULL ) fprintf(fp," not_equal == %s\n", _not_equal); 2801 if ( _less != NULL ) fprintf(fp," less == %s\n", _less); 2802 if ( _greater_equal != NULL ) fprintf(fp," greater_equal == %s\n", _greater_equal); 2803 if ( _less_equal != NULL ) fprintf(fp," less_equal == %s\n", _less_equal); 2804 if ( _greater != NULL ) fprintf(fp," greater == %s\n", _greater); 2805 if ( _overflow != NULL ) fprintf(fp," overflow == %s\n", _overflow); 2806 if ( _no_overflow != NULL ) fprintf(fp," no_overflow == %s\n", _no_overflow); 2807 // fprintf(fp,"\n"); 2808 } 2809 2810 //------------------------------ConstructRule---------------------------------- 2811 ConstructRule::ConstructRule(char *cnstr) 2812 : _construct(cnstr) { 2813 } 2814 ConstructRule::~ConstructRule() { 2815 } 2816 2817 void ConstructRule::dump() { 2818 output(stderr); 2819 } 2820 2821 void ConstructRule::output(FILE *fp) { 2822 fprintf(fp,"\nConstruct Rule\n"); // Write to output files 2823 } 2824 2825 2826 //==============================Shared Forms=================================== 2827 //------------------------------AttributeForm---------------------------------- 2828 int AttributeForm::_insId = 0; // start counter at 0 2829 int AttributeForm::_opId = 0; // start counter at 0 2830 const char* AttributeForm::_ins_cost = "ins_cost"; // required name 2831 const char* AttributeForm::_op_cost = "op_cost"; // required name 2832 2833 AttributeForm::AttributeForm(char *attr, int type, char *attrdef) 2834 : Form(Form::ATTR), _attrname(attr), _atype(type), _attrdef(attrdef) { 2835 if (type==OP_ATTR) { 2836 id = ++_opId; 2837 } 2838 else if (type==INS_ATTR) { 2839 id = ++_insId; 2840 } 2841 else assert( false,""); 2842 } 2843 AttributeForm::~AttributeForm() { 2844 } 2845 2846 // Dynamic type check 2847 AttributeForm *AttributeForm::is_attribute() const { 2848 return (AttributeForm*)this; 2849 } 2850 2851 2852 // inlined // int AttributeForm::type() { return id;} 2853 2854 void AttributeForm::dump() { 2855 output(stderr); 2856 } 2857 2858 void AttributeForm::output(FILE *fp) { 2859 if( _attrname && _attrdef ) { 2860 fprintf(fp,"\n// AttributeForm \nstatic const int %s = %s;\n", 2861 _attrname, _attrdef); 2862 } 2863 else { 2864 fprintf(fp,"\n// AttributeForm missing name %s or definition %s\n", 2865 (_attrname?_attrname:""), (_attrdef?_attrdef:"") ); 2866 } 2867 } 2868 2869 //------------------------------Component-------------------------------------- 2870 Component::Component(const char *name, const char *type, int usedef) 2871 : _name(name), _type(type), _usedef(usedef) { 2872 _ftype = Form::COMP; 2873 } 2874 Component::~Component() { 2875 } 2876 2877 // True if this component is equal to the parameter. 2878 bool Component::is(int use_def_kill_enum) const { 2879 return (_usedef == use_def_kill_enum ? true : false); 2880 } 2881 // True if this component is used/def'd/kill'd as the parameter suggests. 2882 bool Component::isa(int use_def_kill_enum) const { 2883 return (_usedef & use_def_kill_enum) == use_def_kill_enum; 2884 } 2885 2886 // Extend this component with additional use/def/kill behavior 2887 int Component::promote_use_def_info(int new_use_def) { 2888 _usedef |= new_use_def; 2889 2890 return _usedef; 2891 } 2892 2893 // Check the base type of this component, if it has one 2894 const char *Component::base_type(FormDict &globals) { 2895 const Form *frm = globals[_type]; 2896 if (frm == NULL) return NULL; 2897 OperandForm *op = frm->is_operand(); 2898 if (op == NULL) return NULL; 2899 if (op->ideal_only()) return op->_ident; 2900 return (char *)op->ideal_type(globals); 2901 } 2902 2903 void Component::dump() { 2904 output(stderr); 2905 } 2906 2907 void Component::output(FILE *fp) { 2908 fprintf(fp,"Component:"); // Write to output files 2909 fprintf(fp, " name = %s", _name); 2910 fprintf(fp, ", type = %s", _type); 2911 assert(_usedef != 0, "unknown effect"); 2912 fprintf(fp, ", use/def = %s\n", getUsedefName()); 2913 } 2914 2915 2916 //------------------------------ComponentList--------------------------------- 2917 ComponentList::ComponentList() : NameList(), _matchcnt(0) { 2918 } 2919 ComponentList::~ComponentList() { 2920 // // This list may not own its elements if copied via assignment 2921 // Component *component; 2922 // for (reset(); (component = iter()) != NULL;) { 2923 // delete component; 2924 // } 2925 } 2926 2927 void ComponentList::insert(Component *component, bool mflag) { 2928 NameList::addName((char *)component); 2929 if(mflag) _matchcnt++; 2930 } 2931 void ComponentList::insert(const char *name, const char *opType, int usedef, 2932 bool mflag) { 2933 Component * component = new Component(name, opType, usedef); 2934 insert(component, mflag); 2935 } 2936 Component *ComponentList::current() { return (Component*)NameList::current(); } 2937 Component *ComponentList::iter() { return (Component*)NameList::iter(); } 2938 Component *ComponentList::match_iter() { 2939 if(_iter < _matchcnt) return (Component*)NameList::iter(); 2940 return NULL; 2941 } 2942 Component *ComponentList::post_match_iter() { 2943 Component *comp = iter(); 2944 // At end of list? 2945 if ( comp == NULL ) { 2946 return comp; 2947 } 2948 // In post-match components? 2949 if (_iter > match_count()-1) { 2950 return comp; 2951 } 2952 2953 return post_match_iter(); 2954 } 2955 2956 void ComponentList::reset() { NameList::reset(); } 2957 int ComponentList::count() { return NameList::count(); } 2958 2959 Component *ComponentList::operator[](int position) { 2960 // Shortcut complete iteration if there are not enough entries 2961 if (position >= count()) return NULL; 2962 2963 int index = 0; 2964 Component *component = NULL; 2965 for (reset(); (component = iter()) != NULL;) { 2966 if (index == position) { 2967 return component; 2968 } 2969 ++index; 2970 } 2971 2972 return NULL; 2973 } 2974 2975 const Component *ComponentList::search(const char *name) { 2976 PreserveIter pi(this); 2977 reset(); 2978 for( Component *comp = NULL; ((comp = iter()) != NULL); ) { 2979 if( strcmp(comp->_name,name) == 0 ) return comp; 2980 } 2981 2982 return NULL; 2983 } 2984 2985 // Return number of USEs + number of DEFs 2986 // When there are no components, or the first component is a USE, 2987 // then we add '1' to hold a space for the 'result' operand. 2988 int ComponentList::num_operands() { 2989 PreserveIter pi(this); 2990 uint count = 1; // result operand 2991 uint position = 0; 2992 2993 Component *component = NULL; 2994 for( reset(); (component = iter()) != NULL; ++position ) { 2995 if( component->isa(Component::USE) || 2996 ( position == 0 && (! component->isa(Component::DEF))) ) { 2997 ++count; 2998 } 2999 } 3000 3001 return count; 3002 } 3003 3004 // Return zero-based position of operand 'name' in list; -1 if not in list. 3005 // if parameter 'usedef' is ::USE, it will match USE, USE_DEF, ... 3006 int ComponentList::operand_position(const char *name, int usedef, Form *fm) { 3007 PreserveIter pi(this); 3008 int position = 0; 3009 int num_opnds = num_operands(); 3010 Component *component; 3011 Component* preceding_non_use = NULL; 3012 Component* first_def = NULL; 3013 for (reset(); (component = iter()) != NULL; ++position) { 3014 // When the first component is not a DEF, 3015 // leave space for the result operand! 3016 if ( position==0 && (! component->isa(Component::DEF)) ) { 3017 ++position; 3018 ++num_opnds; 3019 } 3020 if (strcmp(name, component->_name)==0 && (component->isa(usedef))) { 3021 // When the first entry in the component list is a DEF and a USE 3022 // Treat them as being separate, a DEF first, then a USE 3023 if( position==0 3024 && usedef==Component::USE && component->isa(Component::DEF) ) { 3025 assert(position+1 < num_opnds, "advertised index in bounds"); 3026 return position+1; 3027 } else { 3028 if( preceding_non_use && strcmp(component->_name, preceding_non_use->_name) ) { 3029 fprintf(stderr, "the name '%s(%s)' should not precede the name '%s(%s)'", 3030 preceding_non_use->_name, preceding_non_use->getUsedefName(), 3031 name, component->getUsedefName()); 3032 if (fm && fm->is_instruction()) fprintf(stderr, "in form '%s'", fm->is_instruction()->_ident); 3033 if (fm && fm->is_operand()) fprintf(stderr, "in form '%s'", fm->is_operand()->_ident); 3034 fprintf(stderr, "\n"); 3035 } 3036 if( position >= num_opnds ) { 3037 fprintf(stderr, "the name '%s' is too late in its name list", name); 3038 if (fm && fm->is_instruction()) fprintf(stderr, "in form '%s'", fm->is_instruction()->_ident); 3039 if (fm && fm->is_operand()) fprintf(stderr, "in form '%s'", fm->is_operand()->_ident); 3040 fprintf(stderr, "\n"); 3041 } 3042 assert(position < num_opnds, "advertised index in bounds"); 3043 return position; 3044 } 3045 } 3046 if( component->isa(Component::DEF) 3047 && component->isa(Component::USE) ) { 3048 ++position; 3049 if( position != 1 ) --position; // only use two slots for the 1st USE_DEF 3050 } 3051 if( component->isa(Component::DEF) && !first_def ) { 3052 first_def = component; 3053 } 3054 if( !component->isa(Component::USE) && component != first_def ) { 3055 preceding_non_use = component; 3056 } else if( preceding_non_use && !strcmp(component->_name, preceding_non_use->_name) ) { 3057 preceding_non_use = NULL; 3058 } 3059 } 3060 return Not_in_list; 3061 } 3062 3063 // Find position for this name, regardless of use/def information 3064 int ComponentList::operand_position(const char *name) { 3065 PreserveIter pi(this); 3066 int position = 0; 3067 Component *component; 3068 for (reset(); (component = iter()) != NULL; ++position) { 3069 // When the first component is not a DEF, 3070 // leave space for the result operand! 3071 if ( position==0 && (! component->isa(Component::DEF)) ) { 3072 ++position; 3073 } 3074 if (strcmp(name, component->_name)==0) { 3075 return position; 3076 } 3077 if( component->isa(Component::DEF) 3078 && component->isa(Component::USE) ) { 3079 ++position; 3080 if( position != 1 ) --position; // only use two slots for the 1st USE_DEF 3081 } 3082 } 3083 return Not_in_list; 3084 } 3085 3086 int ComponentList::operand_position_format(const char *name, Form *fm) { 3087 PreserveIter pi(this); 3088 int first_position = operand_position(name); 3089 int use_position = operand_position(name, Component::USE, fm); 3090 3091 return ((first_position < use_position) ? use_position : first_position); 3092 } 3093 3094 int ComponentList::label_position() { 3095 PreserveIter pi(this); 3096 int position = 0; 3097 reset(); 3098 for( Component *comp; (comp = iter()) != NULL; ++position) { 3099 // When the first component is not a DEF, 3100 // leave space for the result operand! 3101 if ( position==0 && (! comp->isa(Component::DEF)) ) { 3102 ++position; 3103 } 3104 if (strcmp(comp->_type, "label")==0) { 3105 return position; 3106 } 3107 if( comp->isa(Component::DEF) 3108 && comp->isa(Component::USE) ) { 3109 ++position; 3110 if( position != 1 ) --position; // only use two slots for the 1st USE_DEF 3111 } 3112 } 3113 3114 return -1; 3115 } 3116 3117 int ComponentList::method_position() { 3118 PreserveIter pi(this); 3119 int position = 0; 3120 reset(); 3121 for( Component *comp; (comp = iter()) != NULL; ++position) { 3122 // When the first component is not a DEF, 3123 // leave space for the result operand! 3124 if ( position==0 && (! comp->isa(Component::DEF)) ) { 3125 ++position; 3126 } 3127 if (strcmp(comp->_type, "method")==0) { 3128 return position; 3129 } 3130 if( comp->isa(Component::DEF) 3131 && comp->isa(Component::USE) ) { 3132 ++position; 3133 if( position != 1 ) --position; // only use two slots for the 1st USE_DEF 3134 } 3135 } 3136 3137 return -1; 3138 } 3139 3140 void ComponentList::dump() { output(stderr); } 3141 3142 void ComponentList::output(FILE *fp) { 3143 PreserveIter pi(this); 3144 fprintf(fp, "\n"); 3145 Component *component; 3146 for (reset(); (component = iter()) != NULL;) { 3147 component->output(fp); 3148 } 3149 fprintf(fp, "\n"); 3150 } 3151 3152 //------------------------------MatchNode-------------------------------------- 3153 MatchNode::MatchNode(ArchDesc &ad, const char *result, const char *mexpr, 3154 const char *opType, MatchNode *lChild, MatchNode *rChild) 3155 : _AD(ad), _result(result), _name(mexpr), _opType(opType), 3156 _lChild(lChild), _rChild(rChild), _internalop(0), _numleaves(0), 3157 _commutative_id(0) { 3158 _numleaves = (lChild ? lChild->_numleaves : 0) 3159 + (rChild ? rChild->_numleaves : 0); 3160 } 3161 3162 MatchNode::MatchNode(ArchDesc &ad, MatchNode& mnode) 3163 : _AD(ad), _result(mnode._result), _name(mnode._name), 3164 _opType(mnode._opType), _lChild(mnode._lChild), _rChild(mnode._rChild), 3165 _internalop(0), _numleaves(mnode._numleaves), 3166 _commutative_id(mnode._commutative_id) { 3167 } 3168 3169 MatchNode::MatchNode(ArchDesc &ad, MatchNode& mnode, int clone) 3170 : _AD(ad), _result(mnode._result), _name(mnode._name), 3171 _opType(mnode._opType), 3172 _internalop(0), _numleaves(mnode._numleaves), 3173 _commutative_id(mnode._commutative_id) { 3174 if (mnode._lChild) { 3175 _lChild = new MatchNode(ad, *mnode._lChild, clone); 3176 } else { 3177 _lChild = NULL; 3178 } 3179 if (mnode._rChild) { 3180 _rChild = new MatchNode(ad, *mnode._rChild, clone); 3181 } else { 3182 _rChild = NULL; 3183 } 3184 } 3185 3186 MatchNode::~MatchNode() { 3187 // // This node may not own its children if copied via assignment 3188 // if( _lChild ) delete _lChild; 3189 // if( _rChild ) delete _rChild; 3190 } 3191 3192 bool MatchNode::find_type(const char *type, int &position) const { 3193 if ( (_lChild != NULL) && (_lChild->find_type(type, position)) ) return true; 3194 if ( (_rChild != NULL) && (_rChild->find_type(type, position)) ) return true; 3195 3196 if (strcmp(type,_opType)==0) { 3197 return true; 3198 } else { 3199 ++position; 3200 } 3201 return false; 3202 } 3203 3204 // Recursive call collecting info on top-level operands, not transitive. 3205 // Implementation does not modify state of internal structures. 3206 void MatchNode::append_components(FormDict& locals, ComponentList& components, 3207 bool def_flag) const { 3208 int usedef = def_flag ? Component::DEF : Component::USE; 3209 FormDict &globals = _AD.globalNames(); 3210 3211 assert (_name != NULL, "MatchNode::build_components encountered empty node\n"); 3212 // Base case 3213 if (_lChild==NULL && _rChild==NULL) { 3214 // If _opType is not an operation, do not build a component for it ##### 3215 const Form *f = globals[_opType]; 3216 if( f != NULL ) { 3217 // Add non-ideals that are operands, operand-classes, 3218 if( ! f->ideal_only() 3219 && (f->is_opclass() || f->is_operand()) ) { 3220 components.insert(_name, _opType, usedef, true); 3221 } 3222 } 3223 return; 3224 } 3225 // Promote results of "Set" to DEF 3226 bool tmpdef_flag = (!strcmp(_opType, "Set")) ? true : false; 3227 if (_lChild) _lChild->append_components(locals, components, tmpdef_flag); 3228 tmpdef_flag = false; // only applies to component immediately following 'Set' 3229 if (_rChild) _rChild->append_components(locals, components, tmpdef_flag); 3230 } 3231 3232 // Find the n'th base-operand in the match node, 3233 // recursively investigates match rules of user-defined operands. 3234 // 3235 // Implementation does not modify state of internal structures since they 3236 // can be shared. 3237 bool MatchNode::base_operand(uint &position, FormDict &globals, 3238 const char * &result, const char * &name, 3239 const char * &opType) const { 3240 assert (_name != NULL, "MatchNode::base_operand encountered empty node\n"); 3241 // Base case 3242 if (_lChild==NULL && _rChild==NULL) { 3243 // Check for special case: "Universe", "label" 3244 if (strcmp(_opType,"Universe") == 0 || strcmp(_opType,"label")==0 ) { 3245 if (position == 0) { 3246 result = _result; 3247 name = _name; 3248 opType = _opType; 3249 return 1; 3250 } else { 3251 -- position; 3252 return 0; 3253 } 3254 } 3255 3256 const Form *form = globals[_opType]; 3257 MatchNode *matchNode = NULL; 3258 // Check for user-defined type 3259 if (form) { 3260 // User operand or instruction? 3261 OperandForm *opForm = form->is_operand(); 3262 InstructForm *inForm = form->is_instruction(); 3263 if ( opForm ) { 3264 matchNode = (MatchNode*)opForm->_matrule; 3265 } else if ( inForm ) { 3266 matchNode = (MatchNode*)inForm->_matrule; 3267 } 3268 } 3269 // if this is user-defined, recurse on match rule 3270 // User-defined operand and instruction forms have a match-rule. 3271 if (matchNode) { 3272 return (matchNode->base_operand(position,globals,result,name,opType)); 3273 } else { 3274 // Either not a form, or a system-defined form (no match rule). 3275 if (position==0) { 3276 result = _result; 3277 name = _name; 3278 opType = _opType; 3279 return 1; 3280 } else { 3281 --position; 3282 return 0; 3283 } 3284 } 3285 3286 } else { 3287 // Examine the left child and right child as well 3288 if (_lChild) { 3289 if (_lChild->base_operand(position, globals, result, name, opType)) 3290 return 1; 3291 } 3292 3293 if (_rChild) { 3294 if (_rChild->base_operand(position, globals, result, name, opType)) 3295 return 1; 3296 } 3297 } 3298 3299 return 0; 3300 } 3301 3302 // Recursive call on all operands' match rules in my match rule. 3303 uint MatchNode::num_consts(FormDict &globals) const { 3304 uint index = 0; 3305 uint num_consts = 0; 3306 const char *result; 3307 const char *name; 3308 const char *opType; 3309 3310 for (uint position = index; 3311 base_operand(position,globals,result,name,opType); position = index) { 3312 ++index; 3313 if( ideal_to_const_type(opType) ) num_consts++; 3314 } 3315 3316 return num_consts; 3317 } 3318 3319 // Recursive call on all operands' match rules in my match rule. 3320 // Constants in match rule subtree with specified type 3321 uint MatchNode::num_consts(FormDict &globals, Form::DataType type) const { 3322 uint index = 0; 3323 uint num_consts = 0; 3324 const char *result; 3325 const char *name; 3326 const char *opType; 3327 3328 for (uint position = index; 3329 base_operand(position,globals,result,name,opType); position = index) { 3330 ++index; 3331 if( ideal_to_const_type(opType) == type ) num_consts++; 3332 } 3333 3334 return num_consts; 3335 } 3336 3337 // Recursive call on all operands' match rules in my match rule. 3338 uint MatchNode::num_const_ptrs(FormDict &globals) const { 3339 return num_consts( globals, Form::idealP ); 3340 } 3341 3342 bool MatchNode::sets_result() const { 3343 return ( (strcmp(_name,"Set") == 0) ? true : false ); 3344 } 3345 3346 const char *MatchNode::reduce_right(FormDict &globals) const { 3347 // If there is no right reduction, return NULL. 3348 const char *rightStr = NULL; 3349 3350 // If we are a "Set", start from the right child. 3351 const MatchNode *const mnode = sets_result() ? 3352 (const MatchNode *)this->_rChild : 3353 (const MatchNode *)this; 3354 3355 // If our right child exists, it is the right reduction 3356 if ( mnode->_rChild ) { 3357 rightStr = mnode->_rChild->_internalop ? mnode->_rChild->_internalop 3358 : mnode->_rChild->_opType; 3359 } 3360 // Else, May be simple chain rule: (Set dst operand_form), rightStr=NULL; 3361 return rightStr; 3362 } 3363 3364 const char *MatchNode::reduce_left(FormDict &globals) const { 3365 // If there is no left reduction, return NULL. 3366 const char *leftStr = NULL; 3367 3368 // If we are a "Set", start from the right child. 3369 const MatchNode *const mnode = sets_result() ? 3370 (const MatchNode *)this->_rChild : 3371 (const MatchNode *)this; 3372 3373 // If our left child exists, it is the left reduction 3374 if ( mnode->_lChild ) { 3375 leftStr = mnode->_lChild->_internalop ? mnode->_lChild->_internalop 3376 : mnode->_lChild->_opType; 3377 } else { 3378 // May be simple chain rule: (Set dst operand_form_source) 3379 if ( sets_result() ) { 3380 OperandForm *oper = globals[mnode->_opType]->is_operand(); 3381 if( oper ) { 3382 leftStr = mnode->_opType; 3383 } 3384 } 3385 } 3386 return leftStr; 3387 } 3388 3389 //------------------------------count_instr_names------------------------------ 3390 // Count occurrences of operands names in the leaves of the instruction 3391 // match rule. 3392 void MatchNode::count_instr_names( Dict &names ) { 3393 if( !this ) return; 3394 if( _lChild ) _lChild->count_instr_names(names); 3395 if( _rChild ) _rChild->count_instr_names(names); 3396 if( !_lChild && !_rChild ) { 3397 uintptr_t cnt = (uintptr_t)names[_name]; 3398 cnt++; // One more name found 3399 names.Insert(_name,(void*)cnt); 3400 } 3401 } 3402 3403 //------------------------------build_instr_pred------------------------------- 3404 // Build a path to 'name' in buf. Actually only build if cnt is zero, so we 3405 // can skip some leading instances of 'name'. 3406 int MatchNode::build_instr_pred( char *buf, const char *name, int cnt ) { 3407 if( _lChild ) { 3408 if( !cnt ) strcpy( buf, "_kids[0]->" ); 3409 cnt = _lChild->build_instr_pred( buf+strlen(buf), name, cnt ); 3410 if( cnt < 0 ) return cnt; // Found it, all done 3411 } 3412 if( _rChild ) { 3413 if( !cnt ) strcpy( buf, "_kids[1]->" ); 3414 cnt = _rChild->build_instr_pred( buf+strlen(buf), name, cnt ); 3415 if( cnt < 0 ) return cnt; // Found it, all done 3416 } 3417 if( !_lChild && !_rChild ) { // Found a leaf 3418 // Wrong name? Give up... 3419 if( strcmp(name,_name) ) return cnt; 3420 if( !cnt ) strcpy(buf,"_leaf"); 3421 return cnt-1; 3422 } 3423 return cnt; 3424 } 3425 3426 3427 //------------------------------build_internalop------------------------------- 3428 // Build string representation of subtree 3429 void MatchNode::build_internalop( ) { 3430 char *iop, *subtree; 3431 const char *lstr, *rstr; 3432 // Build string representation of subtree 3433 // Operation lchildType rchildType 3434 int len = (int)strlen(_opType) + 4; 3435 lstr = (_lChild) ? ((_lChild->_internalop) ? 3436 _lChild->_internalop : _lChild->_opType) : ""; 3437 rstr = (_rChild) ? ((_rChild->_internalop) ? 3438 _rChild->_internalop : _rChild->_opType) : ""; 3439 len += (int)strlen(lstr) + (int)strlen(rstr); 3440 subtree = (char *)malloc(len); 3441 sprintf(subtree,"_%s_%s_%s", _opType, lstr, rstr); 3442 // Hash the subtree string in _internalOps; if a name exists, use it 3443 iop = (char *)_AD._internalOps[subtree]; 3444 // Else create a unique name, and add it to the hash table 3445 if (iop == NULL) { 3446 iop = subtree; 3447 _AD._internalOps.Insert(subtree, iop); 3448 _AD._internalOpNames.addName(iop); 3449 _AD._internalMatch.Insert(iop, this); 3450 } 3451 // Add the internal operand name to the MatchNode 3452 _internalop = iop; 3453 _result = iop; 3454 } 3455 3456 3457 void MatchNode::dump() { 3458 output(stderr); 3459 } 3460 3461 void MatchNode::output(FILE *fp) { 3462 if (_lChild==0 && _rChild==0) { 3463 fprintf(fp," %s",_name); // operand 3464 } 3465 else { 3466 fprintf(fp," (%s ",_name); // " (opcodeName " 3467 if(_lChild) _lChild->output(fp); // left operand 3468 if(_rChild) _rChild->output(fp); // right operand 3469 fprintf(fp,")"); // ")" 3470 } 3471 } 3472 3473 int MatchNode::needs_ideal_memory_edge(FormDict &globals) const { 3474 static const char *needs_ideal_memory_list[] = { 3475 "StoreI","StoreL","StoreP","StoreN","StoreNKlass","StoreD","StoreF" , 3476 "StoreB","StoreC","Store" ,"StoreFP", 3477 "LoadI", "LoadL", "LoadP" ,"LoadN", "LoadD" ,"LoadF" , 3478 "LoadB" , "LoadUB", "LoadUS" ,"LoadS" ,"Load" , 3479 "StoreVector", "LoadVector", 3480 "LoadRange", "LoadKlass", "LoadNKlass", "LoadL_unaligned", "LoadD_unaligned", 3481 "LoadPLocked", 3482 "StorePConditional", "StoreIConditional", "StoreLConditional", 3483 "CompareAndSwapI", "CompareAndSwapL", "CompareAndSwapP", "CompareAndSwapN", 3484 "StoreCM", 3485 "ClearArray", 3486 "GetAndAddI", "GetAndSetI", "GetAndSetP", 3487 "GetAndAddL", "GetAndSetL", "GetAndSetN", 3488 }; 3489 int cnt = sizeof(needs_ideal_memory_list)/sizeof(char*); 3490 if( strcmp(_opType,"PrefetchRead")==0 || 3491 strcmp(_opType,"PrefetchWrite")==0 || 3492 strcmp(_opType,"PrefetchAllocation")==0 ) 3493 return 1; 3494 if( _lChild ) { 3495 const char *opType = _lChild->_opType; 3496 for( int i=0; i<cnt; i++ ) 3497 if( strcmp(opType,needs_ideal_memory_list[i]) == 0 ) 3498 return 1; 3499 if( _lChild->needs_ideal_memory_edge(globals) ) 3500 return 1; 3501 } 3502 if( _rChild ) { 3503 const char *opType = _rChild->_opType; 3504 for( int i=0; i<cnt; i++ ) 3505 if( strcmp(opType,needs_ideal_memory_list[i]) == 0 ) 3506 return 1; 3507 if( _rChild->needs_ideal_memory_edge(globals) ) 3508 return 1; 3509 } 3510 3511 return 0; 3512 } 3513 3514 // TRUE if defines a derived oop, and so needs a base oop edge present 3515 // post-matching. 3516 int MatchNode::needs_base_oop_edge() const { 3517 if( !strcmp(_opType,"AddP") ) return 1; 3518 if( strcmp(_opType,"Set") ) return 0; 3519 return !strcmp(_rChild->_opType,"AddP"); 3520 } 3521 3522 int InstructForm::needs_base_oop_edge(FormDict &globals) const { 3523 if( is_simple_chain_rule(globals) ) { 3524 const char *src = _matrule->_rChild->_opType; 3525 OperandForm *src_op = globals[src]->is_operand(); 3526 assert( src_op, "Not operand class of chain rule" ); 3527 return src_op->_matrule ? src_op->_matrule->needs_base_oop_edge() : 0; 3528 } // Else check instruction 3529 3530 return _matrule ? _matrule->needs_base_oop_edge() : 0; 3531 } 3532 3533 3534 //-------------------------cisc spilling methods------------------------------- 3535 // helper routines and methods for detecting cisc-spilling instructions 3536 //-------------------------cisc_spill_merge------------------------------------ 3537 int MatchNode::cisc_spill_merge(int left_spillable, int right_spillable) { 3538 int cisc_spillable = Maybe_cisc_spillable; 3539 3540 // Combine results of left and right checks 3541 if( (left_spillable == Maybe_cisc_spillable) && (right_spillable == Maybe_cisc_spillable) ) { 3542 // neither side is spillable, nor prevents cisc spilling 3543 cisc_spillable = Maybe_cisc_spillable; 3544 } 3545 else if( (left_spillable == Maybe_cisc_spillable) && (right_spillable > Maybe_cisc_spillable) ) { 3546 // right side is spillable 3547 cisc_spillable = right_spillable; 3548 } 3549 else if( (right_spillable == Maybe_cisc_spillable) && (left_spillable > Maybe_cisc_spillable) ) { 3550 // left side is spillable 3551 cisc_spillable = left_spillable; 3552 } 3553 else if( (left_spillable == Not_cisc_spillable) || (right_spillable == Not_cisc_spillable) ) { 3554 // left or right prevents cisc spilling this instruction 3555 cisc_spillable = Not_cisc_spillable; 3556 } 3557 else { 3558 // Only allow one to spill 3559 cisc_spillable = Not_cisc_spillable; 3560 } 3561 3562 return cisc_spillable; 3563 } 3564 3565 //-------------------------root_ops_match-------------------------------------- 3566 bool static root_ops_match(FormDict &globals, const char *op1, const char *op2) { 3567 // Base Case: check that the current operands/operations match 3568 assert( op1, "Must have op's name"); 3569 assert( op2, "Must have op's name"); 3570 const Form *form1 = globals[op1]; 3571 const Form *form2 = globals[op2]; 3572 3573 return (form1 == form2); 3574 } 3575 3576 //-------------------------cisc_spill_match_node------------------------------- 3577 // Recursively check two MatchRules for legal conversion via cisc-spilling 3578 int MatchNode::cisc_spill_match(FormDict& globals, RegisterForm* registers, MatchNode* mRule2, const char* &operand, const char* ®_type) { 3579 int cisc_spillable = Maybe_cisc_spillable; 3580 int left_spillable = Maybe_cisc_spillable; 3581 int right_spillable = Maybe_cisc_spillable; 3582 3583 // Check that each has same number of operands at this level 3584 if( (_lChild && !(mRule2->_lChild)) || (_rChild && !(mRule2->_rChild)) ) 3585 return Not_cisc_spillable; 3586 3587 // Base Case: check that the current operands/operations match 3588 // or are CISC spillable 3589 assert( _opType, "Must have _opType"); 3590 assert( mRule2->_opType, "Must have _opType"); 3591 const Form *form = globals[_opType]; 3592 const Form *form2 = globals[mRule2->_opType]; 3593 if( form == form2 ) { 3594 cisc_spillable = Maybe_cisc_spillable; 3595 } else { 3596 const InstructForm *form2_inst = form2 ? form2->is_instruction() : NULL; 3597 const char *name_left = mRule2->_lChild ? mRule2->_lChild->_opType : NULL; 3598 const char *name_right = mRule2->_rChild ? mRule2->_rChild->_opType : NULL; 3599 DataType data_type = Form::none; 3600 if (form->is_operand()) { 3601 // Make sure the loadX matches the type of the reg 3602 data_type = form->ideal_to_Reg_type(form->is_operand()->ideal_type(globals)); 3603 } 3604 // Detect reg vs (loadX memory) 3605 if( form->is_cisc_reg(globals) 3606 && form2_inst 3607 && data_type != Form::none 3608 && (is_load_from_memory(mRule2->_opType) == data_type) // reg vs. (load memory) 3609 && (name_left != NULL) // NOT (load) 3610 && (name_right == NULL) ) { // NOT (load memory foo) 3611 const Form *form2_left = name_left ? globals[name_left] : NULL; 3612 if( form2_left && form2_left->is_cisc_mem(globals) ) { 3613 cisc_spillable = Is_cisc_spillable; 3614 operand = _name; 3615 reg_type = _result; 3616 return Is_cisc_spillable; 3617 } else { 3618 cisc_spillable = Not_cisc_spillable; 3619 } 3620 } 3621 // Detect reg vs memory 3622 else if( form->is_cisc_reg(globals) && form2->is_cisc_mem(globals) ) { 3623 cisc_spillable = Is_cisc_spillable; 3624 operand = _name; 3625 reg_type = _result; 3626 return Is_cisc_spillable; 3627 } else { 3628 cisc_spillable = Not_cisc_spillable; 3629 } 3630 } 3631 3632 // If cisc is still possible, check rest of tree 3633 if( cisc_spillable == Maybe_cisc_spillable ) { 3634 // Check that each has same number of operands at this level 3635 if( (_lChild && !(mRule2->_lChild)) || (_rChild && !(mRule2->_rChild)) ) return Not_cisc_spillable; 3636 3637 // Check left operands 3638 if( (_lChild == NULL) && (mRule2->_lChild == NULL) ) { 3639 left_spillable = Maybe_cisc_spillable; 3640 } else { 3641 left_spillable = _lChild->cisc_spill_match(globals, registers, mRule2->_lChild, operand, reg_type); 3642 } 3643 3644 // Check right operands 3645 if( (_rChild == NULL) && (mRule2->_rChild == NULL) ) { 3646 right_spillable = Maybe_cisc_spillable; 3647 } else { 3648 right_spillable = _rChild->cisc_spill_match(globals, registers, mRule2->_rChild, operand, reg_type); 3649 } 3650 3651 // Combine results of left and right checks 3652 cisc_spillable = cisc_spill_merge(left_spillable, right_spillable); 3653 } 3654 3655 return cisc_spillable; 3656 } 3657 3658 //---------------------------cisc_spill_match_rule------------------------------ 3659 // Recursively check two MatchRules for legal conversion via cisc-spilling 3660 // This method handles the root of Match tree, 3661 // general recursive checks done in MatchNode 3662 int MatchRule::matchrule_cisc_spill_match(FormDict& globals, RegisterForm* registers, 3663 MatchRule* mRule2, const char* &operand, 3664 const char* ®_type) { 3665 int cisc_spillable = Maybe_cisc_spillable; 3666 int left_spillable = Maybe_cisc_spillable; 3667 int right_spillable = Maybe_cisc_spillable; 3668 3669 // Check that each sets a result 3670 if( !(sets_result() && mRule2->sets_result()) ) return Not_cisc_spillable; 3671 // Check that each has same number of operands at this level 3672 if( (_lChild && !(mRule2->_lChild)) || (_rChild && !(mRule2->_rChild)) ) return Not_cisc_spillable; 3673 3674 // Check left operands: at root, must be target of 'Set' 3675 if( (_lChild == NULL) || (mRule2->_lChild == NULL) ) { 3676 left_spillable = Not_cisc_spillable; 3677 } else { 3678 // Do not support cisc-spilling instruction's target location 3679 if( root_ops_match(globals, _lChild->_opType, mRule2->_lChild->_opType) ) { 3680 left_spillable = Maybe_cisc_spillable; 3681 } else { 3682 left_spillable = Not_cisc_spillable; 3683 } 3684 } 3685 3686 // Check right operands: recursive walk to identify reg->mem operand 3687 if( (_rChild == NULL) && (mRule2->_rChild == NULL) ) { 3688 right_spillable = Maybe_cisc_spillable; 3689 } else { 3690 right_spillable = _rChild->cisc_spill_match(globals, registers, mRule2->_rChild, operand, reg_type); 3691 } 3692 3693 // Combine results of left and right checks 3694 cisc_spillable = cisc_spill_merge(left_spillable, right_spillable); 3695 3696 return cisc_spillable; 3697 } 3698 3699 //----------------------------- equivalent ------------------------------------ 3700 // Recursively check to see if two match rules are equivalent. 3701 // This rule handles the root. 3702 bool MatchRule::equivalent(FormDict &globals, MatchNode *mRule2) { 3703 // Check that each sets a result 3704 if (sets_result() != mRule2->sets_result()) { 3705 return false; 3706 } 3707 3708 // Check that the current operands/operations match 3709 assert( _opType, "Must have _opType"); 3710 assert( mRule2->_opType, "Must have _opType"); 3711 const Form *form = globals[_opType]; 3712 const Form *form2 = globals[mRule2->_opType]; 3713 if( form != form2 ) { 3714 return false; 3715 } 3716 3717 if (_lChild ) { 3718 if( !_lChild->equivalent(globals, mRule2->_lChild) ) 3719 return false; 3720 } else if (mRule2->_lChild) { 3721 return false; // I have NULL left child, mRule2 has non-NULL left child. 3722 } 3723 3724 if (_rChild ) { 3725 if( !_rChild->equivalent(globals, mRule2->_rChild) ) 3726 return false; 3727 } else if (mRule2->_rChild) { 3728 return false; // I have NULL right child, mRule2 has non-NULL right child. 3729 } 3730 3731 // We've made it through the gauntlet. 3732 return true; 3733 } 3734 3735 //----------------------------- equivalent ------------------------------------ 3736 // Recursively check to see if two match rules are equivalent. 3737 // This rule handles the operands. 3738 bool MatchNode::equivalent(FormDict &globals, MatchNode *mNode2) { 3739 if( !mNode2 ) 3740 return false; 3741 3742 // Check that the current operands/operations match 3743 assert( _opType, "Must have _opType"); 3744 assert( mNode2->_opType, "Must have _opType"); 3745 const Form *form = globals[_opType]; 3746 const Form *form2 = globals[mNode2->_opType]; 3747 if( form != form2 ) { 3748 return false; 3749 } 3750 3751 // Check that their children also match 3752 if (_lChild ) { 3753 if( !_lChild->equivalent(globals, mNode2->_lChild) ) 3754 return false; 3755 } else if (mNode2->_lChild) { 3756 return false; // I have NULL left child, mNode2 has non-NULL left child. 3757 } 3758 3759 if (_rChild ) { 3760 if( !_rChild->equivalent(globals, mNode2->_rChild) ) 3761 return false; 3762 } else if (mNode2->_rChild) { 3763 return false; // I have NULL right child, mNode2 has non-NULL right child. 3764 } 3765 3766 // We've made it through the gauntlet. 3767 return true; 3768 } 3769 3770 //-------------------------- has_commutative_op ------------------------------- 3771 // Recursively check for commutative operations with subtree operands 3772 // which could be swapped. 3773 void MatchNode::count_commutative_op(int& count) { 3774 static const char *commut_op_list[] = { 3775 "AddI","AddL","AddF","AddD", 3776 "AndI","AndL", 3777 "MaxI","MinI", 3778 "MulI","MulL","MulF","MulD", 3779 "OrI" ,"OrL" , 3780 "XorI","XorL" 3781 }; 3782 int cnt = sizeof(commut_op_list)/sizeof(char*); 3783 3784 if( _lChild && _rChild && (_lChild->_lChild || _rChild->_lChild) ) { 3785 // Don't swap if right operand is an immediate constant. 3786 bool is_const = false; 3787 if( _rChild->_lChild == NULL && _rChild->_rChild == NULL ) { 3788 FormDict &globals = _AD.globalNames(); 3789 const Form *form = globals[_rChild->_opType]; 3790 if ( form ) { 3791 OperandForm *oper = form->is_operand(); 3792 if( oper && oper->interface_type(globals) == Form::constant_interface ) 3793 is_const = true; 3794 } 3795 } 3796 if( !is_const ) { 3797 for( int i=0; i<cnt; i++ ) { 3798 if( strcmp(_opType, commut_op_list[i]) == 0 ) { 3799 count++; 3800 _commutative_id = count; // id should be > 0 3801 break; 3802 } 3803 } 3804 } 3805 } 3806 if( _lChild ) 3807 _lChild->count_commutative_op(count); 3808 if( _rChild ) 3809 _rChild->count_commutative_op(count); 3810 } 3811 3812 //-------------------------- swap_commutative_op ------------------------------ 3813 // Recursively swap specified commutative operation with subtree operands. 3814 void MatchNode::swap_commutative_op(bool atroot, int id) { 3815 if( _commutative_id == id ) { // id should be > 0 3816 assert(_lChild && _rChild && (_lChild->_lChild || _rChild->_lChild ), 3817 "not swappable operation"); 3818 MatchNode* tmp = _lChild; 3819 _lChild = _rChild; 3820 _rChild = tmp; 3821 // Don't exit here since we need to build internalop. 3822 } 3823 3824 bool is_set = ( strcmp(_opType, "Set") == 0 ); 3825 if( _lChild ) 3826 _lChild->swap_commutative_op(is_set, id); 3827 if( _rChild ) 3828 _rChild->swap_commutative_op(is_set, id); 3829 3830 // If not the root, reduce this subtree to an internal operand 3831 if( !atroot && (_lChild || _rChild) ) { 3832 build_internalop(); 3833 } 3834 } 3835 3836 //-------------------------- swap_commutative_op ------------------------------ 3837 // Recursively swap specified commutative operation with subtree operands. 3838 void MatchRule::matchrule_swap_commutative_op(const char* instr_ident, int count, int& match_rules_cnt) { 3839 assert(match_rules_cnt < 100," too many match rule clones"); 3840 // Clone 3841 MatchRule* clone = new MatchRule(_AD, this); 3842 // Swap operands of commutative operation 3843 ((MatchNode*)clone)->swap_commutative_op(true, count); 3844 char* buf = (char*) malloc(strlen(instr_ident) + 4); 3845 sprintf(buf, "%s_%d", instr_ident, match_rules_cnt++); 3846 clone->_result = buf; 3847 3848 clone->_next = this->_next; 3849 this-> _next = clone; 3850 if( (--count) > 0 ) { 3851 this-> matchrule_swap_commutative_op(instr_ident, count, match_rules_cnt); 3852 clone->matchrule_swap_commutative_op(instr_ident, count, match_rules_cnt); 3853 } 3854 } 3855 3856 //------------------------------MatchRule-------------------------------------- 3857 MatchRule::MatchRule(ArchDesc &ad) 3858 : MatchNode(ad), _depth(0), _construct(NULL), _numchilds(0) { 3859 _next = NULL; 3860 } 3861 3862 MatchRule::MatchRule(ArchDesc &ad, MatchRule* mRule) 3863 : MatchNode(ad, *mRule, 0), _depth(mRule->_depth), 3864 _construct(mRule->_construct), _numchilds(mRule->_numchilds) { 3865 _next = NULL; 3866 } 3867 3868 MatchRule::MatchRule(ArchDesc &ad, MatchNode* mroot, int depth, char *cnstr, 3869 int numleaves) 3870 : MatchNode(ad,*mroot), _depth(depth), _construct(cnstr), 3871 _numchilds(0) { 3872 _next = NULL; 3873 mroot->_lChild = NULL; 3874 mroot->_rChild = NULL; 3875 delete mroot; 3876 _numleaves = numleaves; 3877 _numchilds = (_lChild ? 1 : 0) + (_rChild ? 1 : 0); 3878 } 3879 MatchRule::~MatchRule() { 3880 } 3881 3882 // Recursive call collecting info on top-level operands, not transitive. 3883 // Implementation does not modify state of internal structures. 3884 void MatchRule::append_components(FormDict& locals, ComponentList& components, bool def_flag) const { 3885 assert (_name != NULL, "MatchNode::build_components encountered empty node\n"); 3886 3887 MatchNode::append_components(locals, components, 3888 false /* not necessarily a def */); 3889 } 3890 3891 // Recursive call on all operands' match rules in my match rule. 3892 // Implementation does not modify state of internal structures since they 3893 // can be shared. 3894 // The MatchNode that is called first treats its 3895 bool MatchRule::base_operand(uint &position0, FormDict &globals, 3896 const char *&result, const char * &name, 3897 const char * &opType)const{ 3898 uint position = position0; 3899 3900 return (MatchNode::base_operand( position, globals, result, name, opType)); 3901 } 3902 3903 3904 bool MatchRule::is_base_register(FormDict &globals) const { 3905 uint position = 1; 3906 const char *result = NULL; 3907 const char *name = NULL; 3908 const char *opType = NULL; 3909 if (!base_operand(position, globals, result, name, opType)) { 3910 position = 0; 3911 if( base_operand(position, globals, result, name, opType) && 3912 (strcmp(opType,"RegI")==0 || 3913 strcmp(opType,"RegP")==0 || 3914 strcmp(opType,"RegN")==0 || 3915 strcmp(opType,"RegL")==0 || 3916 strcmp(opType,"RegF")==0 || 3917 strcmp(opType,"RegD")==0 || 3918 strcmp(opType,"VecS")==0 || 3919 strcmp(opType,"VecD")==0 || 3920 strcmp(opType,"VecX")==0 || 3921 strcmp(opType,"VecY")==0 || 3922 strcmp(opType,"Reg" )==0) ) { 3923 return 1; 3924 } 3925 } 3926 return 0; 3927 } 3928 3929 Form::DataType MatchRule::is_base_constant(FormDict &globals) const { 3930 uint position = 1; 3931 const char *result = NULL; 3932 const char *name = NULL; 3933 const char *opType = NULL; 3934 if (!base_operand(position, globals, result, name, opType)) { 3935 position = 0; 3936 if (base_operand(position, globals, result, name, opType)) { 3937 return ideal_to_const_type(opType); 3938 } 3939 } 3940 return Form::none; 3941 } 3942 3943 bool MatchRule::is_chain_rule(FormDict &globals) const { 3944 3945 // Check for chain rule, and do not generate a match list for it 3946 if ((_lChild == NULL) && (_rChild == NULL) ) { 3947 const Form *form = globals[_opType]; 3948 // If this is ideal, then it is a base match, not a chain rule. 3949 if ( form && form->is_operand() && (!form->ideal_only())) { 3950 return true; 3951 } 3952 } 3953 // Check for "Set" form of chain rule, and do not generate a match list 3954 if (_rChild) { 3955 const char *rch = _rChild->_opType; 3956 const Form *form = globals[rch]; 3957 if ((!strcmp(_opType,"Set") && 3958 ((form) && form->is_operand()))) { 3959 return true; 3960 } 3961 } 3962 return false; 3963 } 3964 3965 int MatchRule::is_ideal_copy() const { 3966 if( _rChild ) { 3967 const char *opType = _rChild->_opType; 3968 #if 1 3969 if( strcmp(opType,"CastIP")==0 ) 3970 return 1; 3971 #else 3972 if( strcmp(opType,"CastII")==0 ) 3973 return 1; 3974 // Do not treat *CastPP this way, because it 3975 // may transfer a raw pointer to an oop. 3976 // If the register allocator were to coalesce this 3977 // into a single LRG, the GC maps would be incorrect. 3978 //if( strcmp(opType,"CastPP")==0 ) 3979 // return 1; 3980 //if( strcmp(opType,"CheckCastPP")==0 ) 3981 // return 1; 3982 // 3983 // Do not treat CastX2P or CastP2X this way, because 3984 // raw pointers and int types are treated differently 3985 // when saving local & stack info for safepoints in 3986 // Output(). 3987 //if( strcmp(opType,"CastX2P")==0 ) 3988 // return 1; 3989 //if( strcmp(opType,"CastP2X")==0 ) 3990 // return 1; 3991 #endif 3992 } 3993 if( is_chain_rule(_AD.globalNames()) && 3994 _lChild && strncmp(_lChild->_opType,"stackSlot",9)==0 ) 3995 return 1; 3996 return 0; 3997 } 3998 3999 4000 int MatchRule::is_expensive() const { 4001 if( _rChild ) { 4002 const char *opType = _rChild->_opType; 4003 if( strcmp(opType,"AtanD")==0 || 4004 strcmp(opType,"CosD")==0 || 4005 strcmp(opType,"DivD")==0 || 4006 strcmp(opType,"DivF")==0 || 4007 strcmp(opType,"DivI")==0 || 4008 strcmp(opType,"ExpD")==0 || 4009 strcmp(opType,"LogD")==0 || 4010 strcmp(opType,"Log10D")==0 || 4011 strcmp(opType,"ModD")==0 || 4012 strcmp(opType,"ModF")==0 || 4013 strcmp(opType,"ModI")==0 || 4014 strcmp(opType,"PowD")==0 || 4015 strcmp(opType,"SinD")==0 || 4016 strcmp(opType,"SqrtD")==0 || 4017 strcmp(opType,"TanD")==0 || 4018 strcmp(opType,"ConvD2F")==0 || 4019 strcmp(opType,"ConvD2I")==0 || 4020 strcmp(opType,"ConvD2L")==0 || 4021 strcmp(opType,"ConvF2D")==0 || 4022 strcmp(opType,"ConvF2I")==0 || 4023 strcmp(opType,"ConvF2L")==0 || 4024 strcmp(opType,"ConvI2D")==0 || 4025 strcmp(opType,"ConvI2F")==0 || 4026 strcmp(opType,"ConvI2L")==0 || 4027 strcmp(opType,"ConvL2D")==0 || 4028 strcmp(opType,"ConvL2F")==0 || 4029 strcmp(opType,"ConvL2I")==0 || 4030 strcmp(opType,"DecodeN")==0 || 4031 strcmp(opType,"EncodeP")==0 || 4032 strcmp(opType,"EncodePKlass")==0 || 4033 strcmp(opType,"DecodeNKlass")==0 || 4034 strcmp(opType,"RoundDouble")==0 || 4035 strcmp(opType,"RoundFloat")==0 || 4036 strcmp(opType,"ReverseBytesI")==0 || 4037 strcmp(opType,"ReverseBytesL")==0 || 4038 strcmp(opType,"ReverseBytesUS")==0 || 4039 strcmp(opType,"ReverseBytesS")==0 || 4040 strcmp(opType,"ReplicateB")==0 || 4041 strcmp(opType,"ReplicateS")==0 || 4042 strcmp(opType,"ReplicateI")==0 || 4043 strcmp(opType,"ReplicateL")==0 || 4044 strcmp(opType,"ReplicateF")==0 || 4045 strcmp(opType,"ReplicateD")==0 || 4046 0 /* 0 to line up columns nicely */ ) 4047 return 1; 4048 } 4049 return 0; 4050 } 4051 4052 bool MatchRule::is_ideal_if() const { 4053 if( !_opType ) return false; 4054 return 4055 !strcmp(_opType,"If" ) || 4056 !strcmp(_opType,"CountedLoopEnd"); 4057 } 4058 4059 bool MatchRule::is_ideal_fastlock() const { 4060 if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) { 4061 return (strcmp(_rChild->_opType,"FastLock") == 0); 4062 } 4063 return false; 4064 } 4065 4066 bool MatchRule::is_ideal_membar() const { 4067 if( !_opType ) return false; 4068 return 4069 !strcmp(_opType,"MemBarAcquire") || 4070 !strcmp(_opType,"MemBarRelease") || 4071 !strcmp(_opType,"MemBarAcquireLock") || 4072 !strcmp(_opType,"MemBarReleaseLock") || 4073 !strcmp(_opType,"LoadFence" ) || 4074 !strcmp(_opType,"StoreFence") || 4075 !strcmp(_opType,"MemBarVolatile") || 4076 !strcmp(_opType,"MemBarCPUOrder") || 4077 !strcmp(_opType,"MemBarStoreStore"); 4078 } 4079 4080 bool MatchRule::is_ideal_loadPC() const { 4081 if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) { 4082 return (strcmp(_rChild->_opType,"LoadPC") == 0); 4083 } 4084 return false; 4085 } 4086 4087 bool MatchRule::is_ideal_box() const { 4088 if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) { 4089 return (strcmp(_rChild->_opType,"Box") == 0); 4090 } 4091 return false; 4092 } 4093 4094 bool MatchRule::is_ideal_goto() const { 4095 bool ideal_goto = false; 4096 4097 if( _opType && (strcmp(_opType,"Goto") == 0) ) { 4098 ideal_goto = true; 4099 } 4100 return ideal_goto; 4101 } 4102 4103 bool MatchRule::is_ideal_jump() const { 4104 if( _opType ) { 4105 if( !strcmp(_opType,"Jump") ) 4106 return true; 4107 } 4108 return false; 4109 } 4110 4111 bool MatchRule::is_ideal_bool() const { 4112 if( _opType ) { 4113 if( !strcmp(_opType,"Bool") ) 4114 return true; 4115 } 4116 return false; 4117 } 4118 4119 4120 Form::DataType MatchRule::is_ideal_load() const { 4121 Form::DataType ideal_load = Form::none; 4122 4123 if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) { 4124 const char *opType = _rChild->_opType; 4125 ideal_load = is_load_from_memory(opType); 4126 } 4127 4128 return ideal_load; 4129 } 4130 4131 bool MatchRule::is_vector() const { 4132 static const char *vector_list[] = { 4133 "AddVB","AddVS","AddVI","AddVL","AddVF","AddVD", 4134 "SubVB","SubVS","SubVI","SubVL","SubVF","SubVD", 4135 "MulVS","MulVI","MulVF","MulVD", 4136 "DivVF","DivVD", 4137 "AndV" ,"XorV" ,"OrV", 4138 "LShiftCntV","RShiftCntV", 4139 "LShiftVB","LShiftVS","LShiftVI","LShiftVL", 4140 "RShiftVB","RShiftVS","RShiftVI","RShiftVL", 4141 "URShiftVB","URShiftVS","URShiftVI","URShiftVL", 4142 "ReplicateB","ReplicateS","ReplicateI","ReplicateL","ReplicateF","ReplicateD", 4143 "LoadVector","StoreVector", 4144 // Next are not supported currently. 4145 "PackB","PackS","PackI","PackL","PackF","PackD","Pack2L","Pack2D", 4146 "ExtractB","ExtractUB","ExtractC","ExtractS","ExtractI","ExtractL","ExtractF","ExtractD" 4147 }; 4148 int cnt = sizeof(vector_list)/sizeof(char*); 4149 if (_rChild) { 4150 const char *opType = _rChild->_opType; 4151 for (int i=0; i<cnt; i++) 4152 if (strcmp(opType,vector_list[i]) == 0) 4153 return true; 4154 } 4155 return false; 4156 } 4157 4158 4159 bool MatchRule::skip_antidep_check() const { 4160 // Some loads operate on what is effectively immutable memory so we 4161 // should skip the anti dep computations. For some of these nodes 4162 // the rewritable field keeps the anti dep logic from triggering but 4163 // for certain kinds of LoadKlass it does not since they are 4164 // actually reading memory which could be rewritten by the runtime, 4165 // though never by generated code. This disables it uniformly for 4166 // the nodes that behave like this: LoadKlass, LoadNKlass and 4167 // LoadRange. 4168 if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) { 4169 const char *opType = _rChild->_opType; 4170 if (strcmp("LoadKlass", opType) == 0 || 4171 strcmp("LoadNKlass", opType) == 0 || 4172 strcmp("LoadRange", opType) == 0) { 4173 return true; 4174 } 4175 } 4176 4177 return false; 4178 } 4179 4180 4181 Form::DataType MatchRule::is_ideal_store() const { 4182 Form::DataType ideal_store = Form::none; 4183 4184 if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) { 4185 const char *opType = _rChild->_opType; 4186 ideal_store = is_store_to_memory(opType); 4187 } 4188 4189 return ideal_store; 4190 } 4191 4192 4193 void MatchRule::dump() { 4194 output(stderr); 4195 } 4196 4197 // Write just one line. 4198 void MatchRule::output_short(FILE *fp) { 4199 fprintf(fp,"MatchRule: ( %s",_name); 4200 if (_lChild) _lChild->output(fp); 4201 if (_rChild) _rChild->output(fp); 4202 fprintf(fp," )"); 4203 } 4204 4205 void MatchRule::output(FILE *fp) { 4206 output_short(fp); 4207 fprintf(fp,"\n nesting depth = %d\n", _depth); 4208 if (_result) fprintf(fp," Result Type = %s", _result); 4209 fprintf(fp,"\n"); 4210 } 4211 4212 //------------------------------Attribute-------------------------------------- 4213 Attribute::Attribute(char *id, char* val, int type) 4214 : _ident(id), _val(val), _atype(type) { 4215 } 4216 Attribute::~Attribute() { 4217 } 4218 4219 int Attribute::int_val(ArchDesc &ad) { 4220 // Make sure it is an integer constant: 4221 int result = 0; 4222 if (!_val || !ADLParser::is_int_token(_val, result)) { 4223 ad.syntax_err(0, "Attribute %s must have an integer value: %s", 4224 _ident, _val ? _val : ""); 4225 } 4226 return result; 4227 } 4228 4229 void Attribute::dump() { 4230 output(stderr); 4231 } // Debug printer 4232 4233 // Write to output files 4234 void Attribute::output(FILE *fp) { 4235 fprintf(fp,"Attribute: %s %s\n", (_ident?_ident:""), (_val?_val:"")); 4236 } 4237 4238 //------------------------------FormatRule---------------------------------- 4239 FormatRule::FormatRule(char *temp) 4240 : _temp(temp) { 4241 } 4242 FormatRule::~FormatRule() { 4243 } 4244 4245 void FormatRule::dump() { 4246 output(stderr); 4247 } 4248 4249 // Write to output files 4250 void FormatRule::output(FILE *fp) { 4251 fprintf(fp,"\nFormat Rule: \n%s", (_temp?_temp:"")); 4252 fprintf(fp,"\n"); 4253 }