Mercurial > hg > truffle
annotate src/share/vm/adlc/formssel.cpp @ 216:8d191a7697e2
6715633: when matching a memory node the adr_type should not change
Summary: verify the adr_type of a mach node was not changed
Reviewed-by: rasbold, never
| author | kvn |
|---|---|
| date | Fri, 20 Jun 2008 11:10:05 -0700 |
| parents | c436414a719e |
| children | 9c2ecc2ffb12 fab5f738c515 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 * Copyright 1998-2007 Sun Microsystems, Inc. All Rights Reserved. | |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 // FORMS.CPP - Definitions for ADL Parser Forms Classes | |
| 26 #include "adlc.hpp" | |
| 27 | |
| 28 //==============================Instructions=================================== | |
| 29 //------------------------------InstructForm----------------------------------- | |
| 30 InstructForm::InstructForm(const char *id, bool ideal_only) | |
| 31 : _ident(id), _ideal_only(ideal_only), | |
| 32 _localNames(cmpstr, hashstr, Form::arena), | |
| 33 _effects(cmpstr, hashstr, Form::arena) { | |
| 34 _ftype = Form::INS; | |
| 35 | |
| 36 _matrule = NULL; | |
| 37 _insencode = NULL; | |
| 38 _opcode = NULL; | |
| 39 _size = NULL; | |
| 40 _attribs = NULL; | |
| 41 _predicate = NULL; | |
| 42 _exprule = NULL; | |
| 43 _rewrule = NULL; | |
| 44 _format = NULL; | |
| 45 _peephole = NULL; | |
| 46 _ins_pipe = NULL; | |
| 47 _uniq_idx = NULL; | |
| 48 _num_uniq = 0; | |
| 49 _cisc_spill_operand = Not_cisc_spillable;// Which operand may cisc-spill | |
| 50 _cisc_spill_alternate = NULL; // possible cisc replacement | |
| 51 _cisc_reg_mask_name = NULL; | |
| 52 _is_cisc_alternate = false; | |
| 53 _is_short_branch = false; | |
| 54 _short_branch_form = NULL; | |
| 55 _alignment = 1; | |
| 56 } | |
| 57 | |
| 58 InstructForm::InstructForm(const char *id, InstructForm *instr, MatchRule *rule) | |
| 59 : _ident(id), _ideal_only(false), | |
| 60 _localNames(instr->_localNames), | |
| 61 _effects(instr->_effects) { | |
| 62 _ftype = Form::INS; | |
| 63 | |
| 64 _matrule = rule; | |
| 65 _insencode = instr->_insencode; | |
| 66 _opcode = instr->_opcode; | |
| 67 _size = instr->_size; | |
| 68 _attribs = instr->_attribs; | |
| 69 _predicate = instr->_predicate; | |
| 70 _exprule = instr->_exprule; | |
| 71 _rewrule = instr->_rewrule; | |
| 72 _format = instr->_format; | |
| 73 _peephole = instr->_peephole; | |
| 74 _ins_pipe = instr->_ins_pipe; | |
| 75 _uniq_idx = instr->_uniq_idx; | |
| 76 _num_uniq = instr->_num_uniq; | |
| 77 _cisc_spill_operand = Not_cisc_spillable;// Which operand may cisc-spill | |
| 78 _cisc_spill_alternate = NULL; // possible cisc replacement | |
| 79 _cisc_reg_mask_name = NULL; | |
| 80 _is_cisc_alternate = false; | |
| 81 _is_short_branch = false; | |
| 82 _short_branch_form = NULL; | |
| 83 _alignment = 1; | |
| 84 // Copy parameters | |
| 85 const char *name; | |
| 86 instr->_parameters.reset(); | |
| 87 for (; (name = instr->_parameters.iter()) != NULL;) | |
| 88 _parameters.addName(name); | |
| 89 } | |
| 90 | |
| 91 InstructForm::~InstructForm() { | |
| 92 } | |
| 93 | |
| 94 InstructForm *InstructForm::is_instruction() const { | |
| 95 return (InstructForm*)this; | |
| 96 } | |
| 97 | |
| 98 bool InstructForm::ideal_only() const { | |
| 99 return _ideal_only; | |
| 100 } | |
| 101 | |
| 102 bool InstructForm::sets_result() const { | |
| 103 return (_matrule != NULL && _matrule->sets_result()); | |
| 104 } | |
| 105 | |
| 106 bool InstructForm::needs_projections() { | |
| 107 _components.reset(); | |
| 108 for( Component *comp; (comp = _components.iter()) != NULL; ) { | |
| 109 if (comp->isa(Component::KILL)) { | |
| 110 return true; | |
| 111 } | |
| 112 } | |
| 113 return false; | |
| 114 } | |
| 115 | |
| 116 | |
| 117 bool InstructForm::has_temps() { | |
| 118 if (_matrule) { | |
| 119 // Examine each component to see if it is a TEMP | |
| 120 _components.reset(); | |
| 121 // Skip the first component, if already handled as (SET dst (...)) | |
| 122 Component *comp = NULL; | |
| 123 if (sets_result()) comp = _components.iter(); | |
| 124 while ((comp = _components.iter()) != NULL) { | |
| 125 if (comp->isa(Component::TEMP)) { | |
| 126 return true; | |
| 127 } | |
| 128 } | |
| 129 } | |
| 130 | |
| 131 return false; | |
| 132 } | |
| 133 | |
| 134 uint InstructForm::num_defs_or_kills() { | |
| 135 uint defs_or_kills = 0; | |
| 136 | |
| 137 _components.reset(); | |
| 138 for( Component *comp; (comp = _components.iter()) != NULL; ) { | |
| 139 if( comp->isa(Component::DEF) || comp->isa(Component::KILL) ) { | |
| 140 ++defs_or_kills; | |
| 141 } | |
| 142 } | |
| 143 | |
| 144 return defs_or_kills; | |
| 145 } | |
| 146 | |
| 147 // This instruction has an expand rule? | |
| 148 bool InstructForm::expands() const { | |
| 149 return ( _exprule != NULL ); | |
| 150 } | |
| 151 | |
| 152 // This instruction has a peephole rule? | |
| 153 Peephole *InstructForm::peepholes() const { | |
| 154 return _peephole; | |
| 155 } | |
| 156 | |
| 157 // This instruction has a peephole rule? | |
| 158 void InstructForm::append_peephole(Peephole *peephole) { | |
| 159 if( _peephole == NULL ) { | |
| 160 _peephole = peephole; | |
| 161 } else { | |
| 162 _peephole->append_peephole(peephole); | |
| 163 } | |
| 164 } | |
| 165 | |
| 166 | |
| 167 // ideal opcode enumeration | |
| 168 const char *InstructForm::ideal_Opcode( FormDict &globalNames ) const { | |
| 169 if( !_matrule ) return "Node"; // Something weird | |
| 170 // Chain rules do not really have ideal Opcodes; use their source | |
| 171 // operand ideal Opcode instead. | |
| 172 if( is_simple_chain_rule(globalNames) ) { | |
| 173 const char *src = _matrule->_rChild->_opType; | |
| 174 OperandForm *src_op = globalNames[src]->is_operand(); | |
| 175 assert( src_op, "Not operand class of chain rule" ); | |
| 176 if( !src_op->_matrule ) return "Node"; | |
| 177 return src_op->_matrule->_opType; | |
| 178 } | |
| 179 // Operand chain rules do not really have ideal Opcodes | |
| 180 if( _matrule->is_chain_rule(globalNames) ) | |
| 181 return "Node"; | |
| 182 return strcmp(_matrule->_opType,"Set") | |
| 183 ? _matrule->_opType | |
| 184 : _matrule->_rChild->_opType; | |
| 185 } | |
| 186 | |
| 187 // Recursive check on all operands' match rules in my match rule | |
| 188 bool InstructForm::is_pinned(FormDict &globals) { | |
| 189 if ( ! _matrule) return false; | |
| 190 | |
| 191 int index = 0; | |
| 192 if (_matrule->find_type("Goto", index)) return true; | |
| 193 if (_matrule->find_type("If", index)) return true; | |
| 194 if (_matrule->find_type("CountedLoopEnd",index)) return true; | |
| 195 if (_matrule->find_type("Return", index)) return true; | |
| 196 if (_matrule->find_type("Rethrow", index)) return true; | |
| 197 if (_matrule->find_type("TailCall", index)) return true; | |
| 198 if (_matrule->find_type("TailJump", index)) return true; | |
| 199 if (_matrule->find_type("Halt", index)) return true; | |
| 200 if (_matrule->find_type("Jump", index)) return true; | |
| 201 | |
| 202 return is_parm(globals); | |
| 203 } | |
| 204 | |
| 205 // Recursive check on all operands' match rules in my match rule | |
| 206 bool InstructForm::is_projection(FormDict &globals) { | |
| 207 if ( ! _matrule) return false; | |
| 208 | |
| 209 int index = 0; | |
| 210 if (_matrule->find_type("Goto", index)) return true; | |
| 211 if (_matrule->find_type("Return", index)) return true; | |
| 212 if (_matrule->find_type("Rethrow", index)) return true; | |
| 213 if (_matrule->find_type("TailCall",index)) return true; | |
| 214 if (_matrule->find_type("TailJump",index)) return true; | |
| 215 if (_matrule->find_type("Halt", index)) return true; | |
| 216 | |
| 217 return false; | |
| 218 } | |
| 219 | |
| 220 // Recursive check on all operands' match rules in my match rule | |
| 221 bool InstructForm::is_parm(FormDict &globals) { | |
| 222 if ( ! _matrule) return false; | |
| 223 | |
| 224 int index = 0; | |
| 225 if (_matrule->find_type("Parm",index)) return true; | |
| 226 | |
| 227 return false; | |
| 228 } | |
| 229 | |
| 230 | |
| 231 // Return 'true' if this instruction matches an ideal 'Copy*' node | |
| 232 int InstructForm::is_ideal_copy() const { | |
| 233 return _matrule ? _matrule->is_ideal_copy() : 0; | |
| 234 } | |
| 235 | |
| 236 // Return 'true' if this instruction is too complex to rematerialize. | |
| 237 int InstructForm::is_expensive() const { | |
| 238 // We can prove it is cheap if it has an empty encoding. | |
| 239 // This helps with platform-specific nops like ThreadLocal and RoundFloat. | |
| 240 if (is_empty_encoding()) | |
| 241 return 0; | |
| 242 | |
| 243 if (is_tls_instruction()) | |
| 244 return 1; | |
| 245 | |
| 246 if (_matrule == NULL) return 0; | |
| 247 | |
| 248 return _matrule->is_expensive(); | |
| 249 } | |
| 250 | |
| 251 // Has an empty encoding if _size is a constant zero or there | |
| 252 // are no ins_encode tokens. | |
| 253 int InstructForm::is_empty_encoding() const { | |
| 254 if (_insencode != NULL) { | |
| 255 _insencode->reset(); | |
| 256 if (_insencode->encode_class_iter() == NULL) { | |
| 257 return 1; | |
| 258 } | |
| 259 } | |
| 260 if (_size != NULL && strcmp(_size, "0") == 0) { | |
| 261 return 1; | |
| 262 } | |
| 263 return 0; | |
| 264 } | |
| 265 | |
| 266 int InstructForm::is_tls_instruction() const { | |
| 267 if (_ident != NULL && | |
| 268 ( ! strcmp( _ident,"tlsLoadP") || | |
| 269 ! strncmp(_ident,"tlsLoadP_",9)) ) { | |
| 270 return 1; | |
| 271 } | |
| 272 | |
| 273 if (_matrule != NULL && _insencode != NULL) { | |
| 274 const char* opType = _matrule->_opType; | |
| 275 if (strcmp(opType, "Set")==0) | |
| 276 opType = _matrule->_rChild->_opType; | |
| 277 if (strcmp(opType,"ThreadLocal")==0) { | |
| 278 fprintf(stderr, "Warning: ThreadLocal instruction %s should be named 'tlsLoadP_*'\n", | |
| 279 (_ident == NULL ? "NULL" : _ident)); | |
| 280 return 1; | |
| 281 } | |
| 282 } | |
| 283 | |
| 284 return 0; | |
| 285 } | |
| 286 | |
| 287 | |
| 288 // Return 'true' if this instruction matches an ideal 'Copy*' node | |
| 289 bool InstructForm::is_ideal_unlock() const { | |
| 290 return _matrule ? _matrule->is_ideal_unlock() : false; | |
| 291 } | |
| 292 | |
| 293 bool InstructForm::is_ideal_call_leaf() const { | |
| 294 return _matrule ? _matrule->is_ideal_call_leaf() : false; | |
| 295 } | |
| 296 | |
| 297 // Return 'true' if this instruction matches an ideal 'If' node | |
| 298 bool InstructForm::is_ideal_if() const { | |
| 299 if( _matrule == NULL ) return false; | |
| 300 | |
| 301 return _matrule->is_ideal_if(); | |
| 302 } | |
| 303 | |
| 304 // Return 'true' if this instruction matches an ideal 'FastLock' node | |
| 305 bool InstructForm::is_ideal_fastlock() const { | |
| 306 if( _matrule == NULL ) return false; | |
| 307 | |
| 308 return _matrule->is_ideal_fastlock(); | |
| 309 } | |
| 310 | |
| 311 // Return 'true' if this instruction matches an ideal 'MemBarXXX' node | |
| 312 bool InstructForm::is_ideal_membar() const { | |
| 313 if( _matrule == NULL ) return false; | |
| 314 | |
| 315 return _matrule->is_ideal_membar(); | |
| 316 } | |
| 317 | |
| 318 // Return 'true' if this instruction matches an ideal 'LoadPC' node | |
| 319 bool InstructForm::is_ideal_loadPC() const { | |
| 320 if( _matrule == NULL ) return false; | |
| 321 | |
| 322 return _matrule->is_ideal_loadPC(); | |
| 323 } | |
| 324 | |
| 325 // Return 'true' if this instruction matches an ideal 'Box' node | |
| 326 bool InstructForm::is_ideal_box() const { | |
| 327 if( _matrule == NULL ) return false; | |
| 328 | |
| 329 return _matrule->is_ideal_box(); | |
| 330 } | |
| 331 | |
| 332 // Return 'true' if this instruction matches an ideal 'Goto' node | |
| 333 bool InstructForm::is_ideal_goto() const { | |
| 334 if( _matrule == NULL ) return false; | |
| 335 | |
| 336 return _matrule->is_ideal_goto(); | |
| 337 } | |
| 338 | |
| 339 // Return 'true' if this instruction matches an ideal 'Jump' node | |
| 340 bool InstructForm::is_ideal_jump() const { | |
| 341 if( _matrule == NULL ) return false; | |
| 342 | |
| 343 return _matrule->is_ideal_jump(); | |
| 344 } | |
| 345 | |
| 346 // Return 'true' if instruction matches ideal 'If' | 'Goto' | | |
| 347 // 'CountedLoopEnd' | 'Jump' | |
| 348 bool InstructForm::is_ideal_branch() const { | |
| 349 if( _matrule == NULL ) return false; | |
| 350 | |
| 351 return _matrule->is_ideal_if() || _matrule->is_ideal_goto() || _matrule->is_ideal_jump(); | |
| 352 } | |
| 353 | |
| 354 | |
| 355 // Return 'true' if this instruction matches an ideal 'Return' node | |
| 356 bool InstructForm::is_ideal_return() const { | |
| 357 if( _matrule == NULL ) return false; | |
| 358 | |
| 359 // Check MatchRule to see if the first entry is the ideal "Return" node | |
| 360 int index = 0; | |
| 361 if (_matrule->find_type("Return",index)) return true; | |
| 362 if (_matrule->find_type("Rethrow",index)) return true; | |
| 363 if (_matrule->find_type("TailCall",index)) return true; | |
| 364 if (_matrule->find_type("TailJump",index)) return true; | |
| 365 | |
| 366 return false; | |
| 367 } | |
| 368 | |
| 369 // Return 'true' if this instruction matches an ideal 'Halt' node | |
| 370 bool InstructForm::is_ideal_halt() const { | |
| 371 int index = 0; | |
| 372 return _matrule && _matrule->find_type("Halt",index); | |
| 373 } | |
| 374 | |
| 375 // Return 'true' if this instruction matches an ideal 'SafePoint' node | |
| 376 bool InstructForm::is_ideal_safepoint() const { | |
| 377 int index = 0; | |
| 378 return _matrule && _matrule->find_type("SafePoint",index); | |
| 379 } | |
| 380 | |
| 381 // Return 'true' if this instruction matches an ideal 'Nop' node | |
| 382 bool InstructForm::is_ideal_nop() const { | |
| 383 return _ident && _ident[0] == 'N' && _ident[1] == 'o' && _ident[2] == 'p' && _ident[3] == '_'; | |
| 384 } | |
| 385 | |
| 386 bool InstructForm::is_ideal_control() const { | |
| 387 if ( ! _matrule) return false; | |
| 388 | |
| 389 return is_ideal_return() || is_ideal_branch() || is_ideal_halt(); | |
| 390 } | |
| 391 | |
| 392 // Return 'true' if this instruction matches an ideal 'Call' node | |
| 393 Form::CallType InstructForm::is_ideal_call() const { | |
| 394 if( _matrule == NULL ) return Form::invalid_type; | |
| 395 | |
| 396 // Check MatchRule to see if the first entry is the ideal "Call" node | |
| 397 int idx = 0; | |
| 398 if(_matrule->find_type("CallStaticJava",idx)) return Form::JAVA_STATIC; | |
| 399 idx = 0; | |
| 400 if(_matrule->find_type("Lock",idx)) return Form::JAVA_STATIC; | |
| 401 idx = 0; | |
| 402 if(_matrule->find_type("Unlock",idx)) return Form::JAVA_STATIC; | |
| 403 idx = 0; | |
| 404 if(_matrule->find_type("CallDynamicJava",idx)) return Form::JAVA_DYNAMIC; | |
| 405 idx = 0; | |
| 406 if(_matrule->find_type("CallRuntime",idx)) return Form::JAVA_RUNTIME; | |
| 407 idx = 0; | |
| 408 if(_matrule->find_type("CallLeaf",idx)) return Form::JAVA_LEAF; | |
| 409 idx = 0; | |
| 410 if(_matrule->find_type("CallLeafNoFP",idx)) return Form::JAVA_LEAF; | |
| 411 idx = 0; | |
| 412 | |
| 413 return Form::invalid_type; | |
| 414 } | |
| 415 | |
| 416 // Return 'true' if this instruction matches an ideal 'Load?' node | |
| 417 Form::DataType InstructForm::is_ideal_load() const { | |
| 418 if( _matrule == NULL ) return Form::none; | |
| 419 | |
| 420 return _matrule->is_ideal_load(); | |
| 421 } | |
| 422 | |
| 423 // Return 'true' if this instruction matches an ideal 'Load?' node | |
| 424 Form::DataType InstructForm::is_ideal_store() const { | |
| 425 if( _matrule == NULL ) return Form::none; | |
| 426 | |
| 427 return _matrule->is_ideal_store(); | |
| 428 } | |
| 429 | |
| 430 // Return the input register that must match the output register | |
| 431 // If this is not required, return 0 | |
| 432 uint InstructForm::two_address(FormDict &globals) { | |
| 433 uint matching_input = 0; | |
| 434 if(_components.count() == 0) return 0; | |
| 435 | |
| 436 _components.reset(); | |
| 437 Component *comp = _components.iter(); | |
| 438 // Check if there is a DEF | |
| 439 if( comp->isa(Component::DEF) ) { | |
| 440 // Check that this is a register | |
| 441 const char *def_type = comp->_type; | |
| 442 const Form *form = globals[def_type]; | |
| 443 OperandForm *op = form->is_operand(); | |
| 444 if( op ) { | |
| 445 if( op->constrained_reg_class() != NULL && | |
| 446 op->interface_type(globals) == Form::register_interface ) { | |
| 447 // Remember the local name for equality test later | |
| 448 const char *def_name = comp->_name; | |
| 449 // Check if a component has the same name and is a USE | |
| 450 do { | |
| 451 if( comp->isa(Component::USE) && strcmp(comp->_name,def_name)==0 ) { | |
| 452 return operand_position_format(def_name); | |
| 453 } | |
| 454 } while( (comp = _components.iter()) != NULL); | |
| 455 } | |
| 456 } | |
| 457 } | |
| 458 | |
| 459 return 0; | |
| 460 } | |
| 461 | |
| 462 | |
| 463 // when chaining a constant to an instruction, returns 'true' and sets opType | |
| 464 Form::DataType InstructForm::is_chain_of_constant(FormDict &globals) { | |
| 465 const char *dummy = NULL; | |
| 466 const char *dummy2 = NULL; | |
| 467 return is_chain_of_constant(globals, dummy, dummy2); | |
| 468 } | |
| 469 Form::DataType InstructForm::is_chain_of_constant(FormDict &globals, | |
| 470 const char * &opTypeParam) { | |
| 471 const char *result = NULL; | |
| 472 | |
| 473 return is_chain_of_constant(globals, opTypeParam, result); | |
| 474 } | |
| 475 | |
| 476 Form::DataType InstructForm::is_chain_of_constant(FormDict &globals, | |
| 477 const char * &opTypeParam, const char * &resultParam) { | |
| 478 Form::DataType data_type = Form::none; | |
| 479 if ( ! _matrule) return data_type; | |
| 480 | |
| 481 // !!!!! | |
| 482 // The source of the chain rule is 'position = 1' | |
| 483 uint position = 1; | |
| 484 const char *result = NULL; | |
| 485 const char *name = NULL; | |
| 486 const char *opType = NULL; | |
| 487 // Here base_operand is looking for an ideal type to be returned (opType). | |
| 488 if ( _matrule->is_chain_rule(globals) | |
| 489 && _matrule->base_operand(position, globals, result, name, opType) ) { | |
| 490 data_type = ideal_to_const_type(opType); | |
| 491 | |
| 492 // if it isn't an ideal constant type, just return | |
| 493 if ( data_type == Form::none ) return data_type; | |
| 494 | |
| 495 // Ideal constant types also adjust the opType parameter. | |
| 496 resultParam = result; | |
| 497 opTypeParam = opType; | |
| 498 return data_type; | |
| 499 } | |
| 500 | |
| 501 return data_type; | |
| 502 } | |
| 503 | |
| 504 // Check if a simple chain rule | |
| 505 bool InstructForm::is_simple_chain_rule(FormDict &globals) const { | |
| 506 if( _matrule && _matrule->sets_result() | |
| 507 && _matrule->_rChild->_lChild == NULL | |
| 508 && globals[_matrule->_rChild->_opType] | |
| 509 && globals[_matrule->_rChild->_opType]->is_opclass() ) { | |
| 510 return true; | |
| 511 } | |
| 512 return false; | |
| 513 } | |
| 514 | |
| 515 // check for structural rematerialization | |
| 516 bool InstructForm::rematerialize(FormDict &globals, RegisterForm *registers ) { | |
| 517 bool rematerialize = false; | |
| 518 | |
| 519 Form::DataType data_type = is_chain_of_constant(globals); | |
| 520 if( data_type != Form::none ) | |
| 521 rematerialize = true; | |
| 522 | |
| 523 // Constants | |
| 524 if( _components.count() == 1 && _components[0]->is(Component::USE_DEF) ) | |
| 525 rematerialize = true; | |
| 526 | |
| 527 // Pseudo-constants (values easily available to the runtime) | |
| 528 if (is_empty_encoding() && is_tls_instruction()) | |
| 529 rematerialize = true; | |
| 530 | |
| 531 // 1-input, 1-output, such as copies or increments. | |
| 532 if( _components.count() == 2 && | |
| 533 _components[0]->is(Component::DEF) && | |
| 534 _components[1]->isa(Component::USE) ) | |
| 535 rematerialize = true; | |
| 536 | |
| 537 // Check for an ideal 'Load?' and eliminate rematerialize option | |
| 538 if ( is_ideal_load() != Form::none || // Ideal load? Do not rematerialize | |
| 539 is_ideal_copy() != Form::none || // Ideal copy? Do not rematerialize | |
| 540 is_expensive() != Form::none) { // Expensive? Do not rematerialize | |
| 541 rematerialize = false; | |
| 542 } | |
| 543 | |
| 544 // Always rematerialize the flags. They are more expensive to save & | |
| 545 // restore than to recompute (and possibly spill the compare's inputs). | |
| 546 if( _components.count() >= 1 ) { | |
| 547 Component *c = _components[0]; | |
| 548 const Form *form = globals[c->_type]; | |
| 549 OperandForm *opform = form->is_operand(); | |
| 550 if( opform ) { | |
| 551 // Avoid the special stack_slots register classes | |
| 552 const char *rc_name = opform->constrained_reg_class(); | |
| 553 if( rc_name ) { | |
| 554 if( strcmp(rc_name,"stack_slots") ) { | |
| 555 // Check for ideal_type of RegFlags | |
| 556 const char *type = opform->ideal_type( globals, registers ); | |
| 557 if( !strcmp(type,"RegFlags") ) | |
| 558 rematerialize = true; | |
| 559 } else | |
| 560 rematerialize = false; // Do not rematerialize things target stk | |
| 561 } | |
| 562 } | |
| 563 } | |
| 564 | |
| 565 return rematerialize; | |
| 566 } | |
| 567 | |
| 568 // loads from memory, so must check for anti-dependence | |
| 569 bool InstructForm::needs_anti_dependence_check(FormDict &globals) const { | |
| 570 // Machine independent loads must be checked for anti-dependences | |
| 571 if( is_ideal_load() != Form::none ) return true; | |
| 572 | |
| 573 // !!!!! !!!!! !!!!! | |
| 574 // TEMPORARY | |
| 575 // if( is_simple_chain_rule(globals) ) return false; | |
| 576 | |
| 577 // String-compare uses many memorys edges, but writes none | |
| 578 if( _matrule && _matrule->_rChild && | |
| 579 strcmp(_matrule->_rChild->_opType,"StrComp")==0 ) | |
| 580 return true; | |
| 581 | |
| 582 // Check if instruction has a USE of a memory operand class, but no defs | |
| 583 bool USE_of_memory = false; | |
| 584 bool DEF_of_memory = false; | |
| 585 Component *comp = NULL; | |
| 586 ComponentList &components = (ComponentList &)_components; | |
| 587 | |
| 588 components.reset(); | |
| 589 while( (comp = components.iter()) != NULL ) { | |
| 590 const Form *form = globals[comp->_type]; | |
| 591 if( !form ) continue; | |
| 592 OpClassForm *op = form->is_opclass(); | |
| 593 if( !op ) continue; | |
| 594 if( form->interface_type(globals) == Form::memory_interface ) { | |
| 595 if( comp->isa(Component::USE) ) USE_of_memory = true; | |
| 596 if( comp->isa(Component::DEF) ) { | |
| 597 OperandForm *oper = form->is_operand(); | |
| 598 if( oper && oper->is_user_name_for_sReg() ) { | |
| 599 // Stack slots are unaliased memory handled by allocator | |
| 600 oper = oper; // debug stopping point !!!!! | |
| 601 } else { | |
| 602 DEF_of_memory = true; | |
| 603 } | |
| 604 } | |
| 605 } | |
| 606 } | |
| 607 return (USE_of_memory && !DEF_of_memory); | |
| 608 } | |
| 609 | |
| 610 | |
| 611 bool InstructForm::is_wide_memory_kill(FormDict &globals) const { | |
| 612 if( _matrule == NULL ) return false; | |
| 613 if( !_matrule->_opType ) return false; | |
| 614 | |
| 615 if( strcmp(_matrule->_opType,"MemBarRelease") == 0 ) return true; | |
| 616 if( strcmp(_matrule->_opType,"MemBarAcquire") == 0 ) return true; | |
| 617 | |
| 618 return false; | |
| 619 } | |
| 620 | |
| 621 int InstructForm::memory_operand(FormDict &globals) const { | |
| 622 // Machine independent loads must be checked for anti-dependences | |
| 623 // Check if instruction has a USE of a memory operand class, or a def. | |
| 624 int USE_of_memory = 0; | |
| 625 int DEF_of_memory = 0; | |
| 626 const char* last_memory_DEF = NULL; // to test DEF/USE pairing in asserts | |
| 627 Component *unique = NULL; | |
| 628 Component *comp = NULL; | |
| 629 ComponentList &components = (ComponentList &)_components; | |
| 630 | |
| 631 components.reset(); | |
| 632 while( (comp = components.iter()) != NULL ) { | |
| 633 const Form *form = globals[comp->_type]; | |
| 634 if( !form ) continue; | |
| 635 OpClassForm *op = form->is_opclass(); | |
| 636 if( !op ) continue; | |
| 637 if( op->stack_slots_only(globals) ) continue; | |
| 638 if( form->interface_type(globals) == Form::memory_interface ) { | |
| 639 if( comp->isa(Component::DEF) ) { | |
| 640 last_memory_DEF = comp->_name; | |
| 641 DEF_of_memory++; | |
| 642 unique = comp; | |
| 643 } else if( comp->isa(Component::USE) ) { | |
| 644 if( last_memory_DEF != NULL ) { | |
| 645 assert(0 == strcmp(last_memory_DEF, comp->_name), "every memory DEF is followed by a USE of the same name"); | |
| 646 last_memory_DEF = NULL; | |
| 647 } | |
| 648 USE_of_memory++; | |
| 649 if (DEF_of_memory == 0) // defs take precedence | |
| 650 unique = comp; | |
| 651 } else { | |
| 652 assert(last_memory_DEF == NULL, "unpaired memory DEF"); | |
| 653 } | |
| 654 } | |
| 655 } | |
| 656 assert(last_memory_DEF == NULL, "unpaired memory DEF"); | |
| 657 assert(USE_of_memory >= DEF_of_memory, "unpaired memory DEF"); | |
| 658 USE_of_memory -= DEF_of_memory; // treat paired DEF/USE as one occurrence | |
| 659 if( (USE_of_memory + DEF_of_memory) > 0 ) { | |
| 660 if( is_simple_chain_rule(globals) ) { | |
| 661 //fprintf(stderr, "Warning: chain rule is not really a memory user.\n"); | |
| 662 //((InstructForm*)this)->dump(); | |
| 663 // Preceding code prints nothing on sparc and these insns on intel: | |
| 664 // leaP8 leaP32 leaPIdxOff leaPIdxScale leaPIdxScaleOff leaP8 leaP32 | |
| 665 // leaPIdxOff leaPIdxScale leaPIdxScaleOff | |
| 666 return NO_MEMORY_OPERAND; | |
| 667 } | |
| 668 | |
| 669 if( DEF_of_memory == 1 ) { | |
| 670 assert(unique != NULL, ""); | |
| 671 if( USE_of_memory == 0 ) { | |
| 672 // unique def, no uses | |
| 673 } else { | |
| 674 // // unique def, some uses | |
| 675 // // must return bottom unless all uses match def | |
| 676 // unique = NULL; | |
| 677 } | |
| 678 } else if( DEF_of_memory > 0 ) { | |
| 679 // multiple defs, don't care about uses | |
| 680 unique = NULL; | |
| 681 } else if( USE_of_memory == 1) { | |
| 682 // unique use, no defs | |
| 683 assert(unique != NULL, ""); | |
| 684 } else if( USE_of_memory > 0 ) { | |
| 685 // multiple uses, no defs | |
| 686 unique = NULL; | |
| 687 } else { | |
| 688 assert(false, "bad case analysis"); | |
| 689 } | |
| 690 // process the unique DEF or USE, if there is one | |
| 691 if( unique == NULL ) { | |
| 692 return MANY_MEMORY_OPERANDS; | |
| 693 } else { | |
| 694 int pos = components.operand_position(unique->_name); | |
| 695 if( unique->isa(Component::DEF) ) { | |
| 696 pos += 1; // get corresponding USE from DEF | |
| 697 } | |
| 698 assert(pos >= 1, "I was just looking at it!"); | |
| 699 return pos; | |
| 700 } | |
| 701 } | |
| 702 | |
| 703 // missed the memory op?? | |
| 704 if( true ) { // %%% should not be necessary | |
| 705 if( is_ideal_store() != Form::none ) { | |
| 706 fprintf(stderr, "Warning: cannot find memory opnd in instr.\n"); | |
| 707 ((InstructForm*)this)->dump(); | |
| 708 // pretend it has multiple defs and uses | |
| 709 return MANY_MEMORY_OPERANDS; | |
| 710 } | |
| 711 if( is_ideal_load() != Form::none ) { | |
| 712 fprintf(stderr, "Warning: cannot find memory opnd in instr.\n"); | |
| 713 ((InstructForm*)this)->dump(); | |
| 714 // pretend it has multiple uses and no defs | |
| 715 return MANY_MEMORY_OPERANDS; | |
| 716 } | |
| 717 } | |
| 718 | |
| 719 return NO_MEMORY_OPERAND; | |
| 720 } | |
| 721 | |
| 722 | |
| 723 // This instruction captures the machine-independent bottom_type | |
| 724 // Expected use is for pointer vs oop determination for LoadP | |
| 725 bool InstructForm::captures_bottom_type() const { | |
| 726 if( _matrule && _matrule->_rChild && | |
| 727 (!strcmp(_matrule->_rChild->_opType,"CastPP") || // new result type | |
| 728 !strcmp(_matrule->_rChild->_opType,"CastX2P") || // new result type | |
|
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729 !strcmp(_matrule->_rChild->_opType,"DecodeN") || |
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730 !strcmp(_matrule->_rChild->_opType,"EncodeP") || |
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731 !strcmp(_matrule->_rChild->_opType,"LoadN") || |
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732 !strcmp(_matrule->_rChild->_opType,"LoadNKlass") || |
| 0 | 733 !strcmp(_matrule->_rChild->_opType,"CreateEx") || // type of exception |
| 734 !strcmp(_matrule->_rChild->_opType,"CheckCastPP")) ) return true; | |
| 735 else if ( is_ideal_load() == Form::idealP ) return true; | |
| 736 else if ( is_ideal_store() != Form::none ) return true; | |
| 737 | |
| 738 return false; | |
| 739 } | |
| 740 | |
| 741 | |
| 742 // Access instr_cost attribute or return NULL. | |
| 743 const char* InstructForm::cost() { | |
| 744 for (Attribute* cur = _attribs; cur != NULL; cur = (Attribute*)cur->_next) { | |
| 745 if( strcmp(cur->_ident,AttributeForm::_ins_cost) == 0 ) { | |
| 746 return cur->_val; | |
| 747 } | |
| 748 } | |
| 749 return NULL; | |
| 750 } | |
| 751 | |
| 752 // Return count of top-level operands. | |
| 753 uint InstructForm::num_opnds() { | |
| 754 int num_opnds = _components.num_operands(); | |
| 755 | |
| 756 // Need special handling for matching some ideal nodes | |
| 757 // i.e. Matching a return node | |
| 758 /* | |
| 759 if( _matrule ) { | |
| 760 if( strcmp(_matrule->_opType,"Return" )==0 || | |
| 761 strcmp(_matrule->_opType,"Halt" )==0 ) | |
| 762 return 3; | |
| 763 } | |
| 764 */ | |
| 765 return num_opnds; | |
| 766 } | |
| 767 | |
| 768 // Return count of unmatched operands. | |
| 769 uint InstructForm::num_post_match_opnds() { | |
| 770 uint num_post_match_opnds = _components.count(); | |
| 771 uint num_match_opnds = _components.match_count(); | |
| 772 num_post_match_opnds = num_post_match_opnds - num_match_opnds; | |
| 773 | |
| 774 return num_post_match_opnds; | |
| 775 } | |
| 776 | |
| 777 // Return the number of leaves below this complex operand | |
| 778 uint InstructForm::num_consts(FormDict &globals) const { | |
| 779 if ( ! _matrule) return 0; | |
| 780 | |
| 781 // This is a recursive invocation on all operands in the matchrule | |
| 782 return _matrule->num_consts(globals); | |
| 783 } | |
| 784 | |
| 785 // Constants in match rule with specified type | |
| 786 uint InstructForm::num_consts(FormDict &globals, Form::DataType type) const { | |
| 787 if ( ! _matrule) return 0; | |
| 788 | |
| 789 // This is a recursive invocation on all operands in the matchrule | |
| 790 return _matrule->num_consts(globals, type); | |
| 791 } | |
| 792 | |
| 793 | |
| 794 // Return the register class associated with 'leaf'. | |
| 795 const char *InstructForm::out_reg_class(FormDict &globals) { | |
| 796 assert( false, "InstructForm::out_reg_class(FormDict &globals); Not Implemented"); | |
| 797 | |
| 798 return NULL; | |
| 799 } | |
| 800 | |
| 801 | |
| 802 | |
| 803 // Lookup the starting position of inputs we are interested in wrt. ideal nodes | |
| 804 uint InstructForm::oper_input_base(FormDict &globals) { | |
| 805 if( !_matrule ) return 1; // Skip control for most nodes | |
| 806 | |
| 807 // Need special handling for matching some ideal nodes | |
| 808 // i.e. Matching a return node | |
| 809 if( strcmp(_matrule->_opType,"Return" )==0 || | |
| 810 strcmp(_matrule->_opType,"Rethrow" )==0 || | |
| 811 strcmp(_matrule->_opType,"TailCall" )==0 || | |
| 812 strcmp(_matrule->_opType,"TailJump" )==0 || | |
| 813 strcmp(_matrule->_opType,"SafePoint" )==0 || | |
| 814 strcmp(_matrule->_opType,"Halt" )==0 ) | |
| 815 return AdlcVMDeps::Parms; // Skip the machine-state edges | |
| 816 | |
| 817 if( _matrule->_rChild && | |
| 818 strcmp(_matrule->_rChild->_opType,"StrComp")==0 ) { | |
| 819 // String compare takes 1 control and 4 memory edges. | |
| 820 return 5; | |
| 821 } | |
| 822 | |
| 823 // Check for handling of 'Memory' input/edge in the ideal world. | |
| 824 // The AD file writer is shielded from knowledge of these edges. | |
| 825 int base = 1; // Skip control | |
| 826 base += _matrule->needs_ideal_memory_edge(globals); | |
| 827 | |
| 828 // Also skip the base-oop value for uses of derived oops. | |
| 829 // The AD file writer is shielded from knowledge of these edges. | |
| 830 base += needs_base_oop_edge(globals); | |
| 831 | |
| 832 return base; | |
| 833 } | |
| 834 | |
| 835 // Implementation does not modify state of internal structures | |
| 836 void InstructForm::build_components() { | |
| 837 // Add top-level operands to the components | |
| 838 if (_matrule) _matrule->append_components(_localNames, _components); | |
| 839 | |
| 840 // Add parameters that "do not appear in match rule". | |
| 841 bool has_temp = false; | |
| 842 const char *name; | |
| 843 const char *kill_name = NULL; | |
| 844 for (_parameters.reset(); (name = _parameters.iter()) != NULL;) { | |
| 845 OperandForm *opForm = (OperandForm*)_localNames[name]; | |
| 846 | |
| 847 const Form *form = _effects[name]; | |
| 848 Effect *e = form ? form->is_effect() : NULL; | |
| 849 if (e != NULL) { | |
| 850 has_temp |= e->is(Component::TEMP); | |
| 851 | |
| 852 // KILLs must be declared after any TEMPs because TEMPs are real | |
| 853 // uses so their operand numbering must directly follow the real | |
| 854 // inputs from the match rule. Fixing the numbering seems | |
| 855 // complex so simply enforce the restriction during parse. | |
| 856 if (kill_name != NULL && | |
| 857 e->isa(Component::TEMP) && !e->isa(Component::DEF)) { | |
| 858 OperandForm* kill = (OperandForm*)_localNames[kill_name]; | |
| 859 globalAD->syntax_err(_linenum, "%s: %s %s must be at the end of the argument list\n", | |
| 860 _ident, kill->_ident, kill_name); | |
| 861 } else if (e->isa(Component::KILL)) { | |
| 862 kill_name = name; | |
| 863 } | |
| 864 | |
| 865 // TEMPs are real uses and need to be among the first parameters | |
| 866 // listed, otherwise the numbering of operands and inputs gets | |
| 867 // screwy, so enforce this restriction during parse. | |
| 868 if (kill_name != NULL && | |
| 869 e->isa(Component::TEMP) && !e->isa(Component::DEF)) { | |
| 870 OperandForm* kill = (OperandForm*)_localNames[kill_name]; | |
| 871 globalAD->syntax_err(_linenum, "%s: %s %s must follow %s %s in the argument list\n", | |
| 872 _ident, kill->_ident, kill_name, opForm->_ident, name); | |
| 873 } else if (e->isa(Component::KILL)) { | |
| 874 kill_name = name; | |
| 875 } | |
| 876 } | |
| 877 | |
| 878 const Component *component = _components.search(name); | |
| 879 if ( component == NULL ) { | |
| 880 if (e) { | |
| 881 _components.insert(name, opForm->_ident, e->_use_def, false); | |
| 882 component = _components.search(name); | |
| 883 if (component->isa(Component::USE) && !component->isa(Component::TEMP) && _matrule) { | |
| 884 const Form *form = globalAD->globalNames()[component->_type]; | |
| 885 assert( form, "component type must be a defined form"); | |
| 886 OperandForm *op = form->is_operand(); | |
| 887 if (op->_interface && op->_interface->is_RegInterface()) { | |
| 888 globalAD->syntax_err(_linenum, "%s: illegal USE of non-input: %s %s\n", | |
| 889 _ident, opForm->_ident, name); | |
| 890 } | |
| 891 } | |
| 892 } else { | |
| 893 // This would be a nice warning but it triggers in a few places in a benign way | |
| 894 // if (_matrule != NULL && !expands()) { | |
| 895 // globalAD->syntax_err(_linenum, "%s: %s %s not mentioned in effect or match rule\n", | |
| 896 // _ident, opForm->_ident, name); | |
| 897 // } | |
| 898 _components.insert(name, opForm->_ident, Component::INVALID, false); | |
| 899 } | |
| 900 } | |
| 901 else if (e) { | |
| 902 // Component was found in the list | |
| 903 // Check if there is a new effect that requires an extra component. | |
| 904 // This happens when adding 'USE' to a component that is not yet one. | |
| 905 if ((!component->isa( Component::USE) && ((e->_use_def & Component::USE) != 0))) { | |
| 906 if (component->isa(Component::USE) && _matrule) { | |
| 907 const Form *form = globalAD->globalNames()[component->_type]; | |
| 908 assert( form, "component type must be a defined form"); | |
| 909 OperandForm *op = form->is_operand(); | |
| 910 if (op->_interface && op->_interface->is_RegInterface()) { | |
| 911 globalAD->syntax_err(_linenum, "%s: illegal USE of non-input: %s %s\n", | |
| 912 _ident, opForm->_ident, name); | |
| 913 } | |
| 914 } | |
| 915 _components.insert(name, opForm->_ident, e->_use_def, false); | |
| 916 } else { | |
| 917 Component *comp = (Component*)component; | |
| 918 comp->promote_use_def_info(e->_use_def); | |
| 919 } | |
| 920 // Component positions are zero based. | |
| 921 int pos = _components.operand_position(name); | |
| 922 assert( ! (component->isa(Component::DEF) && (pos >= 1)), | |
| 923 "Component::DEF can only occur in the first position"); | |
| 924 } | |
| 925 } | |
| 926 | |
| 927 // Resolving the interactions between expand rules and TEMPs would | |
| 928 // be complex so simply disallow it. | |
| 929 if (_matrule == NULL && has_temp) { | |
| 930 globalAD->syntax_err(_linenum, "%s: TEMPs without match rule isn't supported\n", _ident); | |
| 931 } | |
| 932 | |
| 933 return; | |
| 934 } | |
| 935 | |
| 936 // Return zero-based position in component list; -1 if not in list. | |
| 937 int InstructForm::operand_position(const char *name, int usedef) { | |
| 938 return unique_opnds_idx(_components.operand_position(name, usedef)); | |
| 939 } | |
| 940 | |
| 941 int InstructForm::operand_position_format(const char *name) { | |
| 942 return unique_opnds_idx(_components.operand_position_format(name)); | |
| 943 } | |
| 944 | |
| 945 // Return zero-based position in component list; -1 if not in list. | |
| 946 int InstructForm::label_position() { | |
| 947 return unique_opnds_idx(_components.label_position()); | |
| 948 } | |
| 949 | |
| 950 int InstructForm::method_position() { | |
| 951 return unique_opnds_idx(_components.method_position()); | |
| 952 } | |
| 953 | |
| 954 // Return number of relocation entries needed for this instruction. | |
| 955 uint InstructForm::reloc(FormDict &globals) { | |
| 956 uint reloc_entries = 0; | |
| 957 // Check for "Call" nodes | |
| 958 if ( is_ideal_call() ) ++reloc_entries; | |
| 959 if ( is_ideal_return() ) ++reloc_entries; | |
| 960 if ( is_ideal_safepoint() ) ++reloc_entries; | |
| 961 | |
| 962 | |
| 963 // Check if operands MAYBE oop pointers, by checking for ConP elements | |
| 964 // Proceed through the leaves of the match-tree and check for ConPs | |
| 965 if ( _matrule != NULL ) { | |
| 966 uint position = 0; | |
| 967 const char *result = NULL; | |
| 968 const char *name = NULL; | |
| 969 const char *opType = NULL; | |
| 970 while (_matrule->base_operand(position, globals, result, name, opType)) { | |
| 971 if ( strcmp(opType,"ConP") == 0 ) { | |
| 972 #ifdef SPARC | |
| 973 reloc_entries += 2; // 1 for sethi + 1 for setlo | |
| 974 #else | |
| 975 ++reloc_entries; | |
| 976 #endif | |
| 977 } | |
| 978 ++position; | |
| 979 } | |
| 980 } | |
| 981 | |
| 982 // Above is only a conservative estimate | |
| 983 // because it did not check contents of operand classes. | |
| 984 // !!!!! !!!!! | |
| 985 // Add 1 to reloc info for each operand class in the component list. | |
| 986 Component *comp; | |
| 987 _components.reset(); | |
| 988 while ( (comp = _components.iter()) != NULL ) { | |
| 989 const Form *form = globals[comp->_type]; | |
| 990 assert( form, "Did not find component's type in global names"); | |
| 991 const OpClassForm *opc = form->is_opclass(); | |
| 992 const OperandForm *oper = form->is_operand(); | |
| 993 if ( opc && (oper == NULL) ) { | |
| 994 ++reloc_entries; | |
| 995 } else if ( oper ) { | |
| 996 // floats and doubles loaded out of method's constant pool require reloc info | |
| 997 Form::DataType type = oper->is_base_constant(globals); | |
| 998 if ( (type == Form::idealF) || (type == Form::idealD) ) { | |
| 999 ++reloc_entries; | |
| 1000 } | |
| 1001 } | |
| 1002 } | |
| 1003 | |
| 1004 // Float and Double constants may come from the CodeBuffer table | |
| 1005 // and require relocatable addresses for access | |
| 1006 // !!!!! | |
| 1007 // Check for any component being an immediate float or double. | |
| 1008 Form::DataType data_type = is_chain_of_constant(globals); | |
| 1009 if( data_type==idealD || data_type==idealF ) { | |
| 1010 #ifdef SPARC | |
| 1011 // sparc required more relocation entries for floating constants | |
| 1012 // (expires 9/98) | |
| 1013 reloc_entries += 6; | |
| 1014 #else | |
| 1015 reloc_entries++; | |
| 1016 #endif | |
| 1017 } | |
| 1018 | |
| 1019 return reloc_entries; | |
| 1020 } | |
| 1021 | |
| 1022 // Utility function defined in archDesc.cpp | |
| 1023 extern bool is_def(int usedef); | |
| 1024 | |
| 1025 // Return the result of reducing an instruction | |
| 1026 const char *InstructForm::reduce_result() { | |
| 1027 const char* result = "Universe"; // default | |
| 1028 _components.reset(); | |
| 1029 Component *comp = _components.iter(); | |
| 1030 if (comp != NULL && comp->isa(Component::DEF)) { | |
| 1031 result = comp->_type; | |
| 1032 // Override this if the rule is a store operation: | |
| 1033 if (_matrule && _matrule->_rChild && | |
| 1034 is_store_to_memory(_matrule->_rChild->_opType)) | |
| 1035 result = "Universe"; | |
| 1036 } | |
| 1037 return result; | |
| 1038 } | |
| 1039 | |
| 1040 // Return the name of the operand on the right hand side of the binary match | |
| 1041 // Return NULL if there is no right hand side | |
| 1042 const char *InstructForm::reduce_right(FormDict &globals) const { | |
| 1043 if( _matrule == NULL ) return NULL; | |
| 1044 return _matrule->reduce_right(globals); | |
| 1045 } | |
| 1046 | |
| 1047 // Similar for left | |
| 1048 const char *InstructForm::reduce_left(FormDict &globals) const { | |
| 1049 if( _matrule == NULL ) return NULL; | |
| 1050 return _matrule->reduce_left(globals); | |
| 1051 } | |
| 1052 | |
| 1053 | |
| 1054 // Base class for this instruction, MachNode except for calls | |
| 1055 const char *InstructForm::mach_base_class() const { | |
| 1056 if( is_ideal_call() == Form::JAVA_STATIC ) { | |
| 1057 return "MachCallStaticJavaNode"; | |
| 1058 } | |
| 1059 else if( is_ideal_call() == Form::JAVA_DYNAMIC ) { | |
| 1060 return "MachCallDynamicJavaNode"; | |
| 1061 } | |
| 1062 else if( is_ideal_call() == Form::JAVA_RUNTIME ) { | |
| 1063 return "MachCallRuntimeNode"; | |
| 1064 } | |
| 1065 else if( is_ideal_call() == Form::JAVA_LEAF ) { | |
| 1066 return "MachCallLeafNode"; | |
| 1067 } | |
| 1068 else if (is_ideal_return()) { | |
| 1069 return "MachReturnNode"; | |
| 1070 } | |
| 1071 else if (is_ideal_halt()) { | |
| 1072 return "MachHaltNode"; | |
| 1073 } | |
| 1074 else if (is_ideal_safepoint()) { | |
| 1075 return "MachSafePointNode"; | |
| 1076 } | |
| 1077 else if (is_ideal_if()) { | |
| 1078 return "MachIfNode"; | |
| 1079 } | |
| 1080 else if (is_ideal_fastlock()) { | |
| 1081 return "MachFastLockNode"; | |
| 1082 } | |
| 1083 else if (is_ideal_nop()) { | |
| 1084 return "MachNopNode"; | |
| 1085 } | |
| 1086 else if (captures_bottom_type()) { | |
| 1087 return "MachTypeNode"; | |
| 1088 } else { | |
| 1089 return "MachNode"; | |
| 1090 } | |
| 1091 assert( false, "ShouldNotReachHere()"); | |
| 1092 return NULL; | |
| 1093 } | |
| 1094 | |
| 1095 // Compare the instruction predicates for textual equality | |
| 1096 bool equivalent_predicates( const InstructForm *instr1, const InstructForm *instr2 ) { | |
| 1097 const Predicate *pred1 = instr1->_predicate; | |
| 1098 const Predicate *pred2 = instr2->_predicate; | |
| 1099 if( pred1 == NULL && pred2 == NULL ) { | |
| 1100 // no predicates means they are identical | |
| 1101 return true; | |
| 1102 } | |
| 1103 if( pred1 != NULL && pred2 != NULL ) { | |
| 1104 // compare the predicates | |
| 1105 const char *str1 = pred1->_pred; | |
| 1106 const char *str2 = pred2->_pred; | |
| 1107 if( (str1 == NULL && str2 == NULL) | |
| 1108 || (str1 != NULL && str2 != NULL && strcmp(str1,str2) == 0) ) { | |
| 1109 return true; | |
| 1110 } | |
| 1111 } | |
| 1112 | |
| 1113 return false; | |
| 1114 } | |
| 1115 | |
| 1116 // Check if this instruction can cisc-spill to 'alternate' | |
| 1117 bool InstructForm::cisc_spills_to(ArchDesc &AD, InstructForm *instr) { | |
| 1118 assert( _matrule != NULL && instr->_matrule != NULL, "must have match rules"); | |
| 1119 // Do not replace if a cisc-version has been found. | |
| 1120 if( cisc_spill_operand() != Not_cisc_spillable ) return false; | |
| 1121 | |
| 1122 int cisc_spill_operand = Maybe_cisc_spillable; | |
| 1123 char *result = NULL; | |
| 1124 char *result2 = NULL; | |
| 1125 const char *op_name = NULL; | |
| 1126 const char *reg_type = NULL; | |
| 1127 FormDict &globals = AD.globalNames(); | |
| 1128 cisc_spill_operand = _matrule->cisc_spill_match(globals, AD.get_registers(), instr->_matrule, op_name, reg_type); | |
| 1129 if( (cisc_spill_operand != Not_cisc_spillable) && (op_name != NULL) && equivalent_predicates(this, instr) ) { | |
| 1130 cisc_spill_operand = operand_position(op_name, Component::USE); | |
| 1131 int def_oper = operand_position(op_name, Component::DEF); | |
| 1132 if( def_oper == NameList::Not_in_list && instr->num_opnds() == num_opnds()) { | |
| 1133 // Do not support cisc-spilling for destination operands and | |
| 1134 // make sure they have the same number of operands. | |
| 1135 _cisc_spill_alternate = instr; | |
| 1136 instr->set_cisc_alternate(true); | |
| 1137 if( AD._cisc_spill_debug ) { | |
| 1138 fprintf(stderr, "Instruction %s cisc-spills-to %s\n", _ident, instr->_ident); | |
| 1139 fprintf(stderr, " using operand %s %s at index %d\n", reg_type, op_name, cisc_spill_operand); | |
| 1140 } | |
| 1141 // Record that a stack-version of the reg_mask is needed | |
| 1142 // !!!!! | |
| 1143 OperandForm *oper = (OperandForm*)(globals[reg_type]->is_operand()); | |
| 1144 assert( oper != NULL, "cisc-spilling non operand"); | |
| 1145 const char *reg_class_name = oper->constrained_reg_class(); | |
| 1146 AD.set_stack_or_reg(reg_class_name); | |
| 1147 const char *reg_mask_name = AD.reg_mask(*oper); | |
| 1148 set_cisc_reg_mask_name(reg_mask_name); | |
| 1149 const char *stack_or_reg_mask_name = AD.stack_or_reg_mask(*oper); | |
| 1150 } else { | |
| 1151 cisc_spill_operand = Not_cisc_spillable; | |
| 1152 } | |
| 1153 } else { | |
| 1154 cisc_spill_operand = Not_cisc_spillable; | |
| 1155 } | |
| 1156 | |
| 1157 set_cisc_spill_operand(cisc_spill_operand); | |
| 1158 return (cisc_spill_operand != Not_cisc_spillable); | |
| 1159 } | |
| 1160 | |
| 1161 // Check to see if this instruction can be replaced with the short branch | |
| 1162 // instruction `short-branch' | |
| 1163 bool InstructForm::check_branch_variant(ArchDesc &AD, InstructForm *short_branch) { | |
| 1164 if (_matrule != NULL && | |
| 1165 this != short_branch && // Don't match myself | |
| 1166 !is_short_branch() && // Don't match another short branch variant | |
| 1167 reduce_result() != NULL && | |
| 1168 strcmp(reduce_result(), short_branch->reduce_result()) == 0 && | |
| 1169 _matrule->equivalent(AD.globalNames(), short_branch->_matrule)) { | |
| 1170 // The instructions are equivalent. | |
| 1171 if (AD._short_branch_debug) { | |
| 1172 fprintf(stderr, "Instruction %s has short form %s\n", _ident, short_branch->_ident); | |
| 1173 } | |
| 1174 _short_branch_form = short_branch; | |
| 1175 return true; | |
| 1176 } | |
| 1177 return false; | |
| 1178 } | |
| 1179 | |
| 1180 | |
| 1181 // --------------------------- FILE *output_routines | |
| 1182 // | |
| 1183 // Generate the format call for the replacement variable | |
| 1184 void InstructForm::rep_var_format(FILE *fp, const char *rep_var) { | |
| 1185 // Find replacement variable's type | |
| 1186 const Form *form = _localNames[rep_var]; | |
| 1187 if (form == NULL) { | |
| 1188 fprintf(stderr, "unknown replacement variable in format statement: '%s'\n", rep_var); | |
| 1189 assert(false, "ShouldNotReachHere()"); | |
| 1190 } | |
| 1191 OpClassForm *opc = form->is_opclass(); | |
| 1192 assert( opc, "replacement variable was not found in local names"); | |
| 1193 // Lookup the index position of the replacement variable | |
| 1194 int idx = operand_position_format(rep_var); | |
| 1195 if ( idx == -1 ) { | |
| 1196 assert( strcmp(opc->_ident,"label")==0, "Unimplemented"); | |
| 1197 assert( false, "ShouldNotReachHere()"); | |
| 1198 } | |
| 1199 | |
| 1200 if (is_noninput_operand(idx)) { | |
| 1201 // This component isn't in the input array. Print out the static | |
| 1202 // name of the register. | |
| 1203 OperandForm* oper = form->is_operand(); | |
| 1204 if (oper != NULL && oper->is_bound_register()) { | |
| 1205 const RegDef* first = oper->get_RegClass()->find_first_elem(); | |
| 1206 fprintf(fp, " tty->print(\"%s\");\n", first->_regname); | |
| 1207 } else { | |
| 1208 globalAD->syntax_err(_linenum, "In %s can't find format for %s %s", _ident, opc->_ident, rep_var); | |
| 1209 } | |
| 1210 } else { | |
| 1211 // Output the format call for this operand | |
| 1212 fprintf(fp,"opnd_array(%d)->",idx); | |
| 1213 if (idx == 0) | |
| 1214 fprintf(fp,"int_format(ra, this, st); // %s\n", rep_var); | |
| 1215 else | |
| 1216 fprintf(fp,"ext_format(ra, this,idx%d, st); // %s\n", idx, rep_var ); | |
| 1217 } | |
| 1218 } | |
| 1219 | |
| 1220 // Seach through operands to determine parameters unique positions. | |
| 1221 void InstructForm::set_unique_opnds() { | |
| 1222 uint* uniq_idx = NULL; | |
| 1223 uint nopnds = num_opnds(); | |
| 1224 uint num_uniq = nopnds; | |
| 1225 uint i; | |
| 1226 if ( nopnds > 0 ) { | |
| 1227 // Allocate index array with reserve. | |
| 1228 uniq_idx = (uint*) malloc(sizeof(uint)*(nopnds + 2)); | |
| 1229 for( i = 0; i < nopnds+2; i++ ) { | |
| 1230 uniq_idx[i] = i; | |
| 1231 } | |
| 1232 } | |
| 1233 // Do it only if there is a match rule and no expand rule. With an | |
| 1234 // expand rule it is done by creating new mach node in Expand() | |
| 1235 // method. | |
| 1236 if ( nopnds > 0 && _matrule != NULL && _exprule == NULL ) { | |
| 1237 const char *name; | |
| 1238 uint count; | |
| 1239 bool has_dupl_use = false; | |
| 1240 | |
| 1241 _parameters.reset(); | |
| 1242 while( (name = _parameters.iter()) != NULL ) { | |
| 1243 count = 0; | |
| 1244 uint position = 0; | |
| 1245 uint uniq_position = 0; | |
| 1246 _components.reset(); | |
| 1247 Component *comp = NULL; | |
| 1248 if( sets_result() ) { | |
| 1249 comp = _components.iter(); | |
| 1250 position++; | |
| 1251 } | |
| 1252 // The next code is copied from the method operand_position(). | |
| 1253 for (; (comp = _components.iter()) != NULL; ++position) { | |
| 1254 // When the first component is not a DEF, | |
| 1255 // leave space for the result operand! | |
| 1256 if ( position==0 && (! comp->isa(Component::DEF)) ) { | |
| 1257 ++position; | |
| 1258 } | |
| 1259 if( strcmp(name, comp->_name)==0 ) { | |
| 1260 if( ++count > 1 ) { | |
| 1261 uniq_idx[position] = uniq_position; | |
| 1262 has_dupl_use = true; | |
| 1263 } else { | |
| 1264 uniq_position = position; | |
| 1265 } | |
| 1266 } | |
| 1267 if( comp->isa(Component::DEF) | |
| 1268 && comp->isa(Component::USE) ) { | |
| 1269 ++position; | |
| 1270 if( position != 1 ) | |
| 1271 --position; // only use two slots for the 1st USE_DEF | |
| 1272 } | |
| 1273 } | |
| 1274 } | |
| 1275 if( has_dupl_use ) { | |
| 1276 for( i = 1; i < nopnds; i++ ) | |
| 1277 if( i != uniq_idx[i] ) | |
| 1278 break; | |
| 1279 int j = i; | |
| 1280 for( ; i < nopnds; i++ ) | |
| 1281 if( i == uniq_idx[i] ) | |
| 1282 uniq_idx[i] = j++; | |
| 1283 num_uniq = j; | |
| 1284 } | |
| 1285 } | |
| 1286 _uniq_idx = uniq_idx; | |
| 1287 _num_uniq = num_uniq; | |
| 1288 } | |
| 1289 | |
| 1290 // Generate index values needed for determing the operand position | |
| 1291 void InstructForm::index_temps(FILE *fp, FormDict &globals, const char *prefix, const char *receiver) { | |
| 1292 uint idx = 0; // position of operand in match rule | |
| 1293 int cur_num_opnds = num_opnds(); | |
| 1294 | |
| 1295 // Compute the index into vector of operand pointers: | |
| 1296 // idx0=0 is used to indicate that info comes from this same node, not from input edge. | |
| 1297 // idx1 starts at oper_input_base() | |
| 1298 if ( cur_num_opnds >= 1 ) { | |
| 1299 fprintf(fp," // Start at oper_input_base() and count operands\n"); | |
| 1300 fprintf(fp," unsigned %sidx0 = %d;\n", prefix, oper_input_base(globals)); | |
| 1301 fprintf(fp," unsigned %sidx1 = %d;\n", prefix, oper_input_base(globals)); | |
| 1302 | |
| 1303 // Generate starting points for other unique operands if they exist | |
| 1304 for ( idx = 2; idx < num_unique_opnds(); ++idx ) { | |
| 1305 if( *receiver == 0 ) { | |
| 1306 fprintf(fp," unsigned %sidx%d = %sidx%d + opnd_array(%d)->num_edges();\n", | |
| 1307 prefix, idx, prefix, idx-1, idx-1 ); | |
| 1308 } else { | |
| 1309 fprintf(fp," unsigned %sidx%d = %sidx%d + %s_opnds[%d]->num_edges();\n", | |
| 1310 prefix, idx, prefix, idx-1, receiver, idx-1 ); | |
| 1311 } | |
| 1312 } | |
| 1313 } | |
| 1314 if( *receiver != 0 ) { | |
| 1315 // This value is used by generate_peepreplace when copying a node. | |
| 1316 // Don't emit it in other cases since it can hide bugs with the | |
| 1317 // use invalid idx's. | |
| 1318 fprintf(fp," unsigned %sidx%d = %sreq(); \n", prefix, idx, receiver); | |
| 1319 } | |
| 1320 | |
| 1321 } | |
| 1322 | |
| 1323 // --------------------------- | |
| 1324 bool InstructForm::verify() { | |
| 1325 // !!!!! !!!!! | |
| 1326 // Check that a "label" operand occurs last in the operand list, if present | |
| 1327 return true; | |
| 1328 } | |
| 1329 | |
| 1330 void InstructForm::dump() { | |
| 1331 output(stderr); | |
| 1332 } | |
| 1333 | |
| 1334 void InstructForm::output(FILE *fp) { | |
| 1335 fprintf(fp,"\nInstruction: %s\n", (_ident?_ident:"")); | |
| 1336 if (_matrule) _matrule->output(fp); | |
| 1337 if (_insencode) _insencode->output(fp); | |
| 1338 if (_opcode) _opcode->output(fp); | |
| 1339 if (_attribs) _attribs->output(fp); | |
| 1340 if (_predicate) _predicate->output(fp); | |
| 1341 if (_effects.Size()) { | |
| 1342 fprintf(fp,"Effects\n"); | |
| 1343 _effects.dump(); | |
| 1344 } | |
| 1345 if (_exprule) _exprule->output(fp); | |
| 1346 if (_rewrule) _rewrule->output(fp); | |
| 1347 if (_format) _format->output(fp); | |
| 1348 if (_peephole) _peephole->output(fp); | |
| 1349 } | |
| 1350 | |
| 1351 void MachNodeForm::dump() { | |
| 1352 output(stderr); | |
| 1353 } | |
| 1354 | |
| 1355 void MachNodeForm::output(FILE *fp) { | |
| 1356 fprintf(fp,"\nMachNode: %s\n", (_ident?_ident:"")); | |
| 1357 } | |
| 1358 | |
| 1359 //------------------------------build_predicate-------------------------------- | |
| 1360 // Build instruction predicates. If the user uses the same operand name | |
| 1361 // twice, we need to check that the operands are pointer-eequivalent in | |
| 1362 // the DFA during the labeling process. | |
| 1363 Predicate *InstructForm::build_predicate() { | |
| 1364 char buf[1024], *s=buf; | |
| 1365 Dict names(cmpstr,hashstr,Form::arena); // Map Names to counts | |
| 1366 | |
| 1367 MatchNode *mnode = | |
| 1368 strcmp(_matrule->_opType, "Set") ? _matrule : _matrule->_rChild; | |
| 1369 mnode->count_instr_names(names); | |
| 1370 | |
| 1371 uint first = 1; | |
| 1372 // Start with the predicate supplied in the .ad file. | |
| 1373 if( _predicate ) { | |
| 1374 if( first ) first=0; | |
| 1375 strcpy(s,"("); s += strlen(s); | |
| 1376 strcpy(s,_predicate->_pred); | |
| 1377 s += strlen(s); | |
| 1378 strcpy(s,")"); s += strlen(s); | |
| 1379 } | |
| 1380 for( DictI i(&names); i.test(); ++i ) { | |
| 1381 uintptr_t cnt = (uintptr_t)i._value; | |
| 1382 if( cnt > 1 ) { // Need a predicate at all? | |
| 1383 assert( cnt == 2, "Unimplemented" ); | |
| 1384 // Handle many pairs | |
| 1385 if( first ) first=0; | |
| 1386 else { // All tests must pass, so use '&&' | |
| 1387 strcpy(s," && "); | |
| 1388 s += strlen(s); | |
| 1389 } | |
| 1390 // Add predicate to working buffer | |
| 1391 sprintf(s,"/*%s*/(",(char*)i._key); | |
| 1392 s += strlen(s); | |
| 1393 mnode->build_instr_pred(s,(char*)i._key,0); | |
| 1394 s += strlen(s); | |
| 1395 strcpy(s," == "); s += strlen(s); | |
| 1396 mnode->build_instr_pred(s,(char*)i._key,1); | |
| 1397 s += strlen(s); | |
| 1398 strcpy(s,")"); s += strlen(s); | |
| 1399 } | |
| 1400 } | |
| 1401 if( s == buf ) s = NULL; | |
| 1402 else { | |
| 1403 assert( strlen(buf) < sizeof(buf), "String buffer overflow" ); | |
| 1404 s = strdup(buf); | |
| 1405 } | |
| 1406 return new Predicate(s); | |
| 1407 } | |
| 1408 | |
| 1409 //------------------------------EncodeForm------------------------------------- | |
| 1410 // Constructor | |
| 1411 EncodeForm::EncodeForm() | |
| 1412 : _encClass(cmpstr,hashstr, Form::arena) { | |
| 1413 } | |
| 1414 EncodeForm::~EncodeForm() { | |
| 1415 } | |
| 1416 | |
| 1417 // record a new register class | |
| 1418 EncClass *EncodeForm::add_EncClass(const char *className) { | |
| 1419 EncClass *encClass = new EncClass(className); | |
| 1420 _eclasses.addName(className); | |
| 1421 _encClass.Insert(className,encClass); | |
| 1422 return encClass; | |
| 1423 } | |
| 1424 | |
| 1425 // Lookup the function body for an encoding class | |
| 1426 EncClass *EncodeForm::encClass(const char *className) { | |
| 1427 assert( className != NULL, "Must provide a defined encoding name"); | |
| 1428 | |
| 1429 EncClass *encClass = (EncClass*)_encClass[className]; | |
| 1430 return encClass; | |
| 1431 } | |
| 1432 | |
| 1433 // Lookup the function body for an encoding class | |
| 1434 const char *EncodeForm::encClassBody(const char *className) { | |
| 1435 if( className == NULL ) return NULL; | |
| 1436 | |
| 1437 EncClass *encClass = (EncClass*)_encClass[className]; | |
| 1438 assert( encClass != NULL, "Encode Class is missing."); | |
| 1439 encClass->_code.reset(); | |
| 1440 const char *code = (const char*)encClass->_code.iter(); | |
| 1441 assert( code != NULL, "Found an empty encode class body."); | |
| 1442 | |
| 1443 return code; | |
| 1444 } | |
| 1445 | |
| 1446 // Lookup the function body for an encoding class | |
| 1447 const char *EncodeForm::encClassPrototype(const char *className) { | |
| 1448 assert( className != NULL, "Encode class name must be non NULL."); | |
| 1449 | |
| 1450 return className; | |
| 1451 } | |
| 1452 | |
| 1453 void EncodeForm::dump() { // Debug printer | |
| 1454 output(stderr); | |
| 1455 } | |
| 1456 | |
| 1457 void EncodeForm::output(FILE *fp) { // Write info to output files | |
| 1458 const char *name; | |
| 1459 fprintf(fp,"\n"); | |
| 1460 fprintf(fp,"-------------------- Dump EncodeForm --------------------\n"); | |
| 1461 for (_eclasses.reset(); (name = _eclasses.iter()) != NULL;) { | |
| 1462 ((EncClass*)_encClass[name])->output(fp); | |
| 1463 } | |
| 1464 fprintf(fp,"-------------------- end EncodeForm --------------------\n"); | |
| 1465 } | |
| 1466 //------------------------------EncClass--------------------------------------- | |
| 1467 EncClass::EncClass(const char *name) | |
| 1468 : _localNames(cmpstr,hashstr, Form::arena), _name(name) { | |
| 1469 } | |
| 1470 EncClass::~EncClass() { | |
| 1471 } | |
| 1472 | |
| 1473 // Add a parameter <type,name> pair | |
| 1474 void EncClass::add_parameter(const char *parameter_type, const char *parameter_name) { | |
| 1475 _parameter_type.addName( parameter_type ); | |
| 1476 _parameter_name.addName( parameter_name ); | |
| 1477 } | |
| 1478 | |
| 1479 // Verify operand types in parameter list | |
| 1480 bool EncClass::check_parameter_types(FormDict &globals) { | |
| 1481 // !!!!! | |
| 1482 return false; | |
| 1483 } | |
| 1484 | |
| 1485 // Add the decomposed "code" sections of an encoding's code-block | |
| 1486 void EncClass::add_code(const char *code) { | |
| 1487 _code.addName(code); | |
| 1488 } | |
| 1489 | |
| 1490 // Add the decomposed "replacement variables" of an encoding's code-block | |
| 1491 void EncClass::add_rep_var(char *replacement_var) { | |
| 1492 _code.addName(NameList::_signal); | |
| 1493 _rep_vars.addName(replacement_var); | |
| 1494 } | |
| 1495 | |
| 1496 // Lookup the function body for an encoding class | |
| 1497 int EncClass::rep_var_index(const char *rep_var) { | |
| 1498 uint position = 0; | |
| 1499 const char *name = NULL; | |
| 1500 | |
| 1501 _parameter_name.reset(); | |
| 1502 while ( (name = _parameter_name.iter()) != NULL ) { | |
| 1503 if ( strcmp(rep_var,name) == 0 ) return position; | |
| 1504 ++position; | |
| 1505 } | |
| 1506 | |
| 1507 return -1; | |
| 1508 } | |
| 1509 | |
| 1510 // Check after parsing | |
| 1511 bool EncClass::verify() { | |
| 1512 // 1!!!! | |
| 1513 // Check that each replacement variable, '$name' in architecture description | |
| 1514 // is actually a local variable for this encode class, or a reserved name | |
| 1515 // "primary, secondary, tertiary" | |
| 1516 return true; | |
| 1517 } | |
| 1518 | |
| 1519 void EncClass::dump() { | |
| 1520 output(stderr); | |
| 1521 } | |
| 1522 | |
| 1523 // Write info to output files | |
| 1524 void EncClass::output(FILE *fp) { | |
| 1525 fprintf(fp,"EncClass: %s", (_name ? _name : "")); | |
| 1526 | |
| 1527 // Output the parameter list | |
| 1528 _parameter_type.reset(); | |
| 1529 _parameter_name.reset(); | |
| 1530 const char *type = _parameter_type.iter(); | |
| 1531 const char *name = _parameter_name.iter(); | |
| 1532 fprintf(fp, " ( "); | |
| 1533 for ( ; (type != NULL) && (name != NULL); | |
| 1534 (type = _parameter_type.iter()), (name = _parameter_name.iter()) ) { | |
| 1535 fprintf(fp, " %s %s,", type, name); | |
| 1536 } | |
| 1537 fprintf(fp, " ) "); | |
| 1538 | |
| 1539 // Output the code block | |
| 1540 _code.reset(); | |
| 1541 _rep_vars.reset(); | |
| 1542 const char *code; | |
| 1543 while ( (code = _code.iter()) != NULL ) { | |
| 1544 if ( _code.is_signal(code) ) { | |
| 1545 // A replacement variable | |
| 1546 const char *rep_var = _rep_vars.iter(); | |
| 1547 fprintf(fp,"($%s)", rep_var); | |
| 1548 } else { | |
| 1549 // A section of code | |
| 1550 fprintf(fp,"%s", code); | |
| 1551 } | |
| 1552 } | |
| 1553 | |
| 1554 } | |
| 1555 | |
| 1556 //------------------------------Opcode----------------------------------------- | |
| 1557 Opcode::Opcode(char *primary, char *secondary, char *tertiary) | |
| 1558 : _primary(primary), _secondary(secondary), _tertiary(tertiary) { | |
| 1559 } | |
| 1560 | |
| 1561 Opcode::~Opcode() { | |
| 1562 } | |
| 1563 | |
| 1564 Opcode::opcode_type Opcode::as_opcode_type(const char *param) { | |
| 1565 if( strcmp(param,"primary") == 0 ) { | |
| 1566 return Opcode::PRIMARY; | |
| 1567 } | |
| 1568 else if( strcmp(param,"secondary") == 0 ) { | |
| 1569 return Opcode::SECONDARY; | |
| 1570 } | |
| 1571 else if( strcmp(param,"tertiary") == 0 ) { | |
| 1572 return Opcode::TERTIARY; | |
| 1573 } | |
| 1574 return Opcode::NOT_AN_OPCODE; | |
| 1575 } | |
| 1576 | |
| 1577 void Opcode::print_opcode(FILE *fp, Opcode::opcode_type desired_opcode) { | |
| 1578 // Default values previously provided by MachNode::primary()... | |
| 1579 const char *description = "default_opcode()"; | |
| 1580 const char *value = "-1"; | |
| 1581 // Check if user provided any opcode definitions | |
| 1582 if( this != NULL ) { | |
| 1583 // Update 'value' if user provided a definition in the instruction | |
| 1584 switch (desired_opcode) { | |
| 1585 case PRIMARY: | |
| 1586 description = "primary()"; | |
| 1587 if( _primary != NULL) { value = _primary; } | |
| 1588 break; | |
| 1589 case SECONDARY: | |
| 1590 description = "secondary()"; | |
| 1591 if( _secondary != NULL ) { value = _secondary; } | |
| 1592 break; | |
| 1593 case TERTIARY: | |
| 1594 description = "tertiary()"; | |
| 1595 if( _tertiary != NULL ) { value = _tertiary; } | |
| 1596 break; | |
| 1597 default: | |
| 1598 assert( false, "ShouldNotReachHere();"); | |
| 1599 break; | |
| 1600 } | |
| 1601 } | |
| 1602 fprintf(fp, "(%s /*%s*/)", value, description); | |
| 1603 } | |
| 1604 | |
| 1605 void Opcode::dump() { | |
| 1606 output(stderr); | |
| 1607 } | |
| 1608 | |
| 1609 // Write info to output files | |
| 1610 void Opcode::output(FILE *fp) { | |
| 1611 if (_primary != NULL) fprintf(fp,"Primary opcode: %s\n", _primary); | |
| 1612 if (_secondary != NULL) fprintf(fp,"Secondary opcode: %s\n", _secondary); | |
| 1613 if (_tertiary != NULL) fprintf(fp,"Tertiary opcode: %s\n", _tertiary); | |
| 1614 } | |
| 1615 | |
| 1616 //------------------------------InsEncode-------------------------------------- | |
| 1617 InsEncode::InsEncode() { | |
| 1618 } | |
| 1619 InsEncode::~InsEncode() { | |
| 1620 } | |
| 1621 | |
| 1622 // Add "encode class name" and its parameters | |
| 1623 NameAndList *InsEncode::add_encode(char *encoding) { | |
| 1624 assert( encoding != NULL, "Must provide name for encoding"); | |
| 1625 | |
| 1626 // add_parameter(NameList::_signal); | |
| 1627 NameAndList *encode = new NameAndList(encoding); | |
| 1628 _encoding.addName((char*)encode); | |
| 1629 | |
| 1630 return encode; | |
| 1631 } | |
| 1632 | |
| 1633 // Access the list of encodings | |
| 1634 void InsEncode::reset() { | |
| 1635 _encoding.reset(); | |
| 1636 // _parameter.reset(); | |
| 1637 } | |
| 1638 const char* InsEncode::encode_class_iter() { | |
| 1639 NameAndList *encode_class = (NameAndList*)_encoding.iter(); | |
| 1640 return ( encode_class != NULL ? encode_class->name() : NULL ); | |
| 1641 } | |
| 1642 // Obtain parameter name from zero based index | |
| 1643 const char *InsEncode::rep_var_name(InstructForm &inst, uint param_no) { | |
| 1644 NameAndList *params = (NameAndList*)_encoding.current(); | |
| 1645 assert( params != NULL, "Internal Error"); | |
| 1646 const char *param = (*params)[param_no]; | |
| 1647 | |
| 1648 // Remove '$' if parser placed it there. | |
| 1649 return ( param != NULL && *param == '$') ? (param+1) : param; | |
| 1650 } | |
| 1651 | |
| 1652 void InsEncode::dump() { | |
| 1653 output(stderr); | |
| 1654 } | |
| 1655 | |
| 1656 // Write info to output files | |
| 1657 void InsEncode::output(FILE *fp) { | |
| 1658 NameAndList *encoding = NULL; | |
| 1659 const char *parameter = NULL; | |
| 1660 | |
| 1661 fprintf(fp,"InsEncode: "); | |
| 1662 _encoding.reset(); | |
| 1663 | |
| 1664 while ( (encoding = (NameAndList*)_encoding.iter()) != 0 ) { | |
| 1665 // Output the encoding being used | |
| 1666 fprintf(fp,"%s(", encoding->name() ); | |
| 1667 | |
| 1668 // Output its parameter list, if any | |
| 1669 bool first_param = true; | |
| 1670 encoding->reset(); | |
| 1671 while ( (parameter = encoding->iter()) != 0 ) { | |
| 1672 // Output the ',' between parameters | |
| 1673 if ( ! first_param ) fprintf(fp,", "); | |
| 1674 first_param = false; | |
| 1675 // Output the parameter | |
| 1676 fprintf(fp,"%s", parameter); | |
| 1677 } // done with parameters | |
| 1678 fprintf(fp,") "); | |
| 1679 } // done with encodings | |
| 1680 | |
| 1681 fprintf(fp,"\n"); | |
| 1682 } | |
| 1683 | |
| 1684 //------------------------------Effect----------------------------------------- | |
| 1685 static int effect_lookup(const char *name) { | |
| 1686 if(!strcmp(name, "USE")) return Component::USE; | |
| 1687 if(!strcmp(name, "DEF")) return Component::DEF; | |
| 1688 if(!strcmp(name, "USE_DEF")) return Component::USE_DEF; | |
| 1689 if(!strcmp(name, "KILL")) return Component::KILL; | |
| 1690 if(!strcmp(name, "USE_KILL")) return Component::USE_KILL; | |
| 1691 if(!strcmp(name, "TEMP")) return Component::TEMP; | |
| 1692 if(!strcmp(name, "INVALID")) return Component::INVALID; | |
| 1693 assert( false,"Invalid effect name specified\n"); | |
| 1694 return Component::INVALID; | |
| 1695 } | |
| 1696 | |
| 1697 Effect::Effect(const char *name) : _name(name), _use_def(effect_lookup(name)) { | |
| 1698 _ftype = Form::EFF; | |
| 1699 } | |
| 1700 Effect::~Effect() { | |
| 1701 } | |
| 1702 | |
| 1703 // Dynamic type check | |
| 1704 Effect *Effect::is_effect() const { | |
| 1705 return (Effect*)this; | |
| 1706 } | |
| 1707 | |
| 1708 | |
| 1709 // True if this component is equal to the parameter. | |
| 1710 bool Effect::is(int use_def_kill_enum) const { | |
| 1711 return (_use_def == use_def_kill_enum ? true : false); | |
| 1712 } | |
| 1713 // True if this component is used/def'd/kill'd as the parameter suggests. | |
| 1714 bool Effect::isa(int use_def_kill_enum) const { | |
| 1715 return (_use_def & use_def_kill_enum) == use_def_kill_enum; | |
| 1716 } | |
| 1717 | |
| 1718 void Effect::dump() { | |
| 1719 output(stderr); | |
| 1720 } | |
| 1721 | |
| 1722 void Effect::output(FILE *fp) { // Write info to output files | |
| 1723 fprintf(fp,"Effect: %s\n", (_name?_name:"")); | |
| 1724 } | |
| 1725 | |
| 1726 //------------------------------ExpandRule------------------------------------- | |
| 1727 ExpandRule::ExpandRule() : _expand_instrs(), | |
| 1728 _newopconst(cmpstr, hashstr, Form::arena) { | |
| 1729 _ftype = Form::EXP; | |
| 1730 } | |
| 1731 | |
| 1732 ExpandRule::~ExpandRule() { // Destructor | |
| 1733 } | |
| 1734 | |
| 1735 void ExpandRule::add_instruction(NameAndList *instruction_name_and_operand_list) { | |
| 1736 _expand_instrs.addName((char*)instruction_name_and_operand_list); | |
| 1737 } | |
| 1738 | |
| 1739 void ExpandRule::reset_instructions() { | |
| 1740 _expand_instrs.reset(); | |
| 1741 } | |
| 1742 | |
| 1743 NameAndList* ExpandRule::iter_instructions() { | |
| 1744 return (NameAndList*)_expand_instrs.iter(); | |
| 1745 } | |
| 1746 | |
| 1747 | |
| 1748 void ExpandRule::dump() { | |
| 1749 output(stderr); | |
| 1750 } | |
| 1751 | |
| 1752 void ExpandRule::output(FILE *fp) { // Write info to output files | |
| 1753 NameAndList *expand_instr = NULL; | |
| 1754 const char *opid = NULL; | |
| 1755 | |
| 1756 fprintf(fp,"\nExpand Rule:\n"); | |
| 1757 | |
| 1758 // Iterate over the instructions 'node' expands into | |
| 1759 for(reset_instructions(); (expand_instr = iter_instructions()) != NULL; ) { | |
| 1760 fprintf(fp,"%s(", expand_instr->name()); | |
| 1761 | |
| 1762 // iterate over the operand list | |
| 1763 for( expand_instr->reset(); (opid = expand_instr->iter()) != NULL; ) { | |
| 1764 fprintf(fp,"%s ", opid); | |
| 1765 } | |
| 1766 fprintf(fp,");\n"); | |
| 1767 } | |
| 1768 } | |
| 1769 | |
| 1770 //------------------------------RewriteRule------------------------------------ | |
| 1771 RewriteRule::RewriteRule(char* params, char* block) | |
| 1772 : _tempParams(params), _tempBlock(block) { }; // Constructor | |
| 1773 RewriteRule::~RewriteRule() { // Destructor | |
| 1774 } | |
| 1775 | |
| 1776 void RewriteRule::dump() { | |
| 1777 output(stderr); | |
| 1778 } | |
| 1779 | |
| 1780 void RewriteRule::output(FILE *fp) { // Write info to output files | |
| 1781 fprintf(fp,"\nRewrite Rule:\n%s\n%s\n", | |
| 1782 (_tempParams?_tempParams:""), | |
| 1783 (_tempBlock?_tempBlock:"")); | |
| 1784 } | |
| 1785 | |
| 1786 | |
| 1787 //==============================MachNodes====================================== | |
| 1788 //------------------------------MachNodeForm----------------------------------- | |
| 1789 MachNodeForm::MachNodeForm(char *id) | |
| 1790 : _ident(id) { | |
| 1791 } | |
| 1792 | |
| 1793 MachNodeForm::~MachNodeForm() { | |
| 1794 } | |
| 1795 | |
| 1796 MachNodeForm *MachNodeForm::is_machnode() const { | |
| 1797 return (MachNodeForm*)this; | |
| 1798 } | |
| 1799 | |
| 1800 //==============================Operand Classes================================ | |
| 1801 //------------------------------OpClassForm------------------------------------ | |
| 1802 OpClassForm::OpClassForm(const char* id) : _ident(id) { | |
| 1803 _ftype = Form::OPCLASS; | |
| 1804 } | |
| 1805 | |
| 1806 OpClassForm::~OpClassForm() { | |
| 1807 } | |
| 1808 | |
| 1809 bool OpClassForm::ideal_only() const { return 0; } | |
| 1810 | |
| 1811 OpClassForm *OpClassForm::is_opclass() const { | |
| 1812 return (OpClassForm*)this; | |
| 1813 } | |
| 1814 | |
| 1815 Form::InterfaceType OpClassForm::interface_type(FormDict &globals) const { | |
| 1816 if( _oplst.count() == 0 ) return Form::no_interface; | |
| 1817 | |
| 1818 // Check that my operands have the same interface type | |
| 1819 Form::InterfaceType interface; | |
| 1820 bool first = true; | |
| 1821 NameList &op_list = (NameList &)_oplst; | |
| 1822 op_list.reset(); | |
| 1823 const char *op_name; | |
| 1824 while( (op_name = op_list.iter()) != NULL ) { | |
| 1825 const Form *form = globals[op_name]; | |
| 1826 OperandForm *operand = form->is_operand(); | |
| 1827 assert( operand, "Entry in operand class that is not an operand"); | |
| 1828 if( first ) { | |
| 1829 first = false; | |
| 1830 interface = operand->interface_type(globals); | |
| 1831 } else { | |
| 1832 interface = (interface == operand->interface_type(globals) ? interface : Form::no_interface); | |
| 1833 } | |
| 1834 } | |
| 1835 return interface; | |
| 1836 } | |
| 1837 | |
| 1838 bool OpClassForm::stack_slots_only(FormDict &globals) const { | |
| 1839 if( _oplst.count() == 0 ) return false; // how? | |
| 1840 | |
| 1841 NameList &op_list = (NameList &)_oplst; | |
| 1842 op_list.reset(); | |
| 1843 const char *op_name; | |
| 1844 while( (op_name = op_list.iter()) != NULL ) { | |
| 1845 const Form *form = globals[op_name]; | |
| 1846 OperandForm *operand = form->is_operand(); | |
| 1847 assert( operand, "Entry in operand class that is not an operand"); | |
| 1848 if( !operand->stack_slots_only(globals) ) return false; | |
| 1849 } | |
| 1850 return true; | |
| 1851 } | |
| 1852 | |
| 1853 | |
| 1854 void OpClassForm::dump() { | |
| 1855 output(stderr); | |
| 1856 } | |
| 1857 | |
| 1858 void OpClassForm::output(FILE *fp) { | |
| 1859 const char *name; | |
| 1860 fprintf(fp,"\nOperand Class: %s\n", (_ident?_ident:"")); | |
| 1861 fprintf(fp,"\nCount = %d\n", _oplst.count()); | |
| 1862 for(_oplst.reset(); (name = _oplst.iter()) != NULL;) { | |
| 1863 fprintf(fp,"%s, ",name); | |
| 1864 } | |
| 1865 fprintf(fp,"\n"); | |
| 1866 } | |
| 1867 | |
| 1868 | |
| 1869 //==============================Operands======================================= | |
| 1870 //------------------------------OperandForm------------------------------------ | |
| 1871 OperandForm::OperandForm(const char* id) | |
| 1872 : OpClassForm(id), _ideal_only(false), | |
| 1873 _localNames(cmpstr, hashstr, Form::arena) { | |
| 1874 _ftype = Form::OPER; | |
| 1875 | |
| 1876 _matrule = NULL; | |
| 1877 _interface = NULL; | |
| 1878 _attribs = NULL; | |
| 1879 _predicate = NULL; | |
| 1880 _constraint= NULL; | |
| 1881 _construct = NULL; | |
| 1882 _format = NULL; | |
| 1883 } | |
| 1884 OperandForm::OperandForm(const char* id, bool ideal_only) | |
| 1885 : OpClassForm(id), _ideal_only(ideal_only), | |
| 1886 _localNames(cmpstr, hashstr, Form::arena) { | |
| 1887 _ftype = Form::OPER; | |
| 1888 | |
| 1889 _matrule = NULL; | |
| 1890 _interface = NULL; | |
| 1891 _attribs = NULL; | |
| 1892 _predicate = NULL; | |
| 1893 _constraint= NULL; | |
| 1894 _construct = NULL; | |
| 1895 _format = NULL; | |
| 1896 } | |
| 1897 OperandForm::~OperandForm() { | |
| 1898 } | |
| 1899 | |
| 1900 | |
| 1901 OperandForm *OperandForm::is_operand() const { | |
| 1902 return (OperandForm*)this; | |
| 1903 } | |
| 1904 | |
| 1905 bool OperandForm::ideal_only() const { | |
| 1906 return _ideal_only; | |
| 1907 } | |
| 1908 | |
| 1909 Form::InterfaceType OperandForm::interface_type(FormDict &globals) const { | |
| 1910 if( _interface == NULL ) return Form::no_interface; | |
| 1911 | |
| 1912 return _interface->interface_type(globals); | |
| 1913 } | |
| 1914 | |
| 1915 | |
| 1916 bool OperandForm::stack_slots_only(FormDict &globals) const { | |
| 1917 if( _constraint == NULL ) return false; | |
| 1918 return _constraint->stack_slots_only(); | |
| 1919 } | |
| 1920 | |
| 1921 | |
| 1922 // Access op_cost attribute or return NULL. | |
| 1923 const char* OperandForm::cost() { | |
| 1924 for (Attribute* cur = _attribs; cur != NULL; cur = (Attribute*)cur->_next) { | |
| 1925 if( strcmp(cur->_ident,AttributeForm::_op_cost) == 0 ) { | |
| 1926 return cur->_val; | |
| 1927 } | |
| 1928 } | |
| 1929 return NULL; | |
| 1930 } | |
| 1931 | |
| 1932 // Return the number of leaves below this complex operand | |
| 1933 uint OperandForm::num_leaves() const { | |
| 1934 if ( ! _matrule) return 0; | |
| 1935 | |
| 1936 int num_leaves = _matrule->_numleaves; | |
| 1937 return num_leaves; | |
| 1938 } | |
| 1939 | |
| 1940 // Return the number of constants contained within this complex operand | |
| 1941 uint OperandForm::num_consts(FormDict &globals) const { | |
| 1942 if ( ! _matrule) return 0; | |
| 1943 | |
| 1944 // This is a recursive invocation on all operands in the matchrule | |
| 1945 return _matrule->num_consts(globals); | |
| 1946 } | |
| 1947 | |
| 1948 // Return the number of constants in match rule with specified type | |
| 1949 uint OperandForm::num_consts(FormDict &globals, Form::DataType type) const { | |
| 1950 if ( ! _matrule) return 0; | |
| 1951 | |
| 1952 // This is a recursive invocation on all operands in the matchrule | |
| 1953 return _matrule->num_consts(globals, type); | |
| 1954 } | |
| 1955 | |
| 1956 // Return the number of pointer constants contained within this complex operand | |
| 1957 uint OperandForm::num_const_ptrs(FormDict &globals) const { | |
| 1958 if ( ! _matrule) return 0; | |
| 1959 | |
| 1960 // This is a recursive invocation on all operands in the matchrule | |
| 1961 return _matrule->num_const_ptrs(globals); | |
| 1962 } | |
| 1963 | |
| 1964 uint OperandForm::num_edges(FormDict &globals) const { | |
| 1965 uint edges = 0; | |
| 1966 uint leaves = num_leaves(); | |
| 1967 uint consts = num_consts(globals); | |
| 1968 | |
| 1969 // If we are matching a constant directly, there are no leaves. | |
| 1970 edges = ( leaves > consts ) ? leaves - consts : 0; | |
| 1971 | |
| 1972 // !!!!! | |
| 1973 // Special case operands that do not have a corresponding ideal node. | |
| 1974 if( (edges == 0) && (consts == 0) ) { | |
| 1975 if( constrained_reg_class() != NULL ) { | |
| 1976 edges = 1; | |
| 1977 } else { | |
| 1978 if( _matrule | |
| 1979 && (_matrule->_lChild == NULL) && (_matrule->_rChild == NULL) ) { | |
| 1980 const Form *form = globals[_matrule->_opType]; | |
| 1981 OperandForm *oper = form ? form->is_operand() : NULL; | |
| 1982 if( oper ) { | |
| 1983 return oper->num_edges(globals); | |
| 1984 } | |
| 1985 } | |
| 1986 } | |
| 1987 } | |
| 1988 | |
| 1989 return edges; | |
| 1990 } | |
| 1991 | |
| 1992 | |
| 1993 // Check if this operand is usable for cisc-spilling | |
| 1994 bool OperandForm::is_cisc_reg(FormDict &globals) const { | |
| 1995 const char *ideal = ideal_type(globals); | |
| 1996 bool is_cisc_reg = (ideal && (ideal_to_Reg_type(ideal) != none)); | |
| 1997 return is_cisc_reg; | |
| 1998 } | |
| 1999 | |
| 2000 bool OpClassForm::is_cisc_mem(FormDict &globals) const { | |
| 2001 Form::InterfaceType my_interface = interface_type(globals); | |
| 2002 return (my_interface == memory_interface); | |
| 2003 } | |
| 2004 | |
| 2005 | |
| 2006 // node matches ideal 'Bool' | |
| 2007 bool OperandForm::is_ideal_bool() const { | |
| 2008 if( _matrule == NULL ) return false; | |
| 2009 | |
| 2010 return _matrule->is_ideal_bool(); | |
| 2011 } | |
| 2012 | |
| 2013 // Require user's name for an sRegX to be stackSlotX | |
| 2014 Form::DataType OperandForm::is_user_name_for_sReg() const { | |
| 2015 DataType data_type = none; | |
| 2016 if( _ident != NULL ) { | |
| 2017 if( strcmp(_ident,"stackSlotI") == 0 ) data_type = Form::idealI; | |
| 2018 else if( strcmp(_ident,"stackSlotP") == 0 ) data_type = Form::idealP; | |
| 2019 else if( strcmp(_ident,"stackSlotD") == 0 ) data_type = Form::idealD; | |
| 2020 else if( strcmp(_ident,"stackSlotF") == 0 ) data_type = Form::idealF; | |
| 2021 else if( strcmp(_ident,"stackSlotL") == 0 ) data_type = Form::idealL; | |
| 2022 } | |
| 2023 assert((data_type == none) || (_matrule == NULL), "No match-rule for stackSlotX"); | |
| 2024 | |
| 2025 return data_type; | |
| 2026 } | |
| 2027 | |
| 2028 | |
| 2029 // Return ideal type, if there is a single ideal type for this operand | |
| 2030 const char *OperandForm::ideal_type(FormDict &globals, RegisterForm *registers) const { | |
| 2031 const char *type = NULL; | |
| 2032 if (ideal_only()) type = _ident; | |
| 2033 else if( _matrule == NULL ) { | |
| 2034 // Check for condition code register | |
| 2035 const char *rc_name = constrained_reg_class(); | |
| 2036 // !!!!! | |
| 2037 if (rc_name == NULL) return NULL; | |
| 2038 // !!!!! !!!!! | |
| 2039 // Check constraints on result's register class | |
| 2040 if( registers ) { | |
| 2041 RegClass *reg_class = registers->getRegClass(rc_name); | |
| 2042 assert( reg_class != NULL, "Register class is not defined"); | |
| 2043 | |
| 2044 // Check for ideal type of entries in register class, all are the same type | |
| 2045 reg_class->reset(); | |
| 2046 RegDef *reg_def = reg_class->RegDef_iter(); | |
| 2047 assert( reg_def != NULL, "No entries in register class"); | |
| 2048 assert( reg_def->_idealtype != NULL, "Did not define ideal type for register"); | |
| 2049 // Return substring that names the register's ideal type | |
| 2050 type = reg_def->_idealtype + 3; | |
| 2051 assert( *(reg_def->_idealtype + 0) == 'O', "Expect Op_ prefix"); | |
| 2052 assert( *(reg_def->_idealtype + 1) == 'p', "Expect Op_ prefix"); | |
| 2053 assert( *(reg_def->_idealtype + 2) == '_', "Expect Op_ prefix"); | |
| 2054 } | |
| 2055 } | |
| 2056 else if( _matrule->_lChild == NULL && _matrule->_rChild == NULL ) { | |
| 2057 // This operand matches a single type, at the top level. | |
| 2058 // Check for ideal type | |
| 2059 type = _matrule->_opType; | |
| 2060 if( strcmp(type,"Bool") == 0 ) | |
| 2061 return "Bool"; | |
| 2062 // transitive lookup | |
| 2063 const Form *frm = globals[type]; | |
| 2064 OperandForm *op = frm->is_operand(); | |
| 2065 type = op->ideal_type(globals, registers); | |
| 2066 } | |
| 2067 return type; | |
| 2068 } | |
| 2069 | |
| 2070 | |
| 2071 // If there is a single ideal type for this interface field, return it. | |
| 2072 const char *OperandForm::interface_ideal_type(FormDict &globals, | |
| 2073 const char *field) const { | |
| 2074 const char *ideal_type = NULL; | |
| 2075 const char *value = NULL; | |
| 2076 | |
| 2077 // Check if "field" is valid for this operand's interface | |
| 2078 if ( ! is_interface_field(field, value) ) return ideal_type; | |
| 2079 | |
| 2080 // !!!!! !!!!! !!!!! | |
| 2081 // If a valid field has a constant value, identify "ConI" or "ConP" or ... | |
| 2082 | |
| 2083 // Else, lookup type of field's replacement variable | |
| 2084 | |
| 2085 return ideal_type; | |
| 2086 } | |
| 2087 | |
| 2088 | |
| 2089 RegClass* OperandForm::get_RegClass() const { | |
| 2090 if (_interface && !_interface->is_RegInterface()) return NULL; | |
| 2091 return globalAD->get_registers()->getRegClass(constrained_reg_class()); | |
| 2092 } | |
| 2093 | |
| 2094 | |
| 2095 bool OperandForm::is_bound_register() const { | |
| 2096 RegClass *reg_class = get_RegClass(); | |
| 2097 if (reg_class == NULL) return false; | |
| 2098 | |
| 2099 const char * name = ideal_type(globalAD->globalNames()); | |
| 2100 if (name == NULL) return false; | |
| 2101 | |
| 2102 int size = 0; | |
| 2103 if (strcmp(name,"RegFlags")==0) size = 1; | |
| 2104 if (strcmp(name,"RegI")==0) size = 1; | |
| 2105 if (strcmp(name,"RegF")==0) size = 1; | |
| 2106 if (strcmp(name,"RegD")==0) size = 2; | |
| 2107 if (strcmp(name,"RegL")==0) size = 2; | |
|
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|
2108 if (strcmp(name,"RegN")==0) size = 1; |
| 0 | 2109 if (strcmp(name,"RegP")==0) size = globalAD->get_preproc_def("_LP64") ? 2 : 1; |
| 2110 if (size == 0) return false; | |
| 2111 return size == reg_class->size(); | |
| 2112 } | |
| 2113 | |
| 2114 | |
| 2115 // Check if this is a valid field for this operand, | |
| 2116 // Return 'true' if valid, and set the value to the string the user provided. | |
| 2117 bool OperandForm::is_interface_field(const char *field, | |
| 2118 const char * &value) const { | |
| 2119 return false; | |
| 2120 } | |
| 2121 | |
| 2122 | |
| 2123 // Return register class name if a constraint specifies the register class. | |
| 2124 const char *OperandForm::constrained_reg_class() const { | |
| 2125 const char *reg_class = NULL; | |
| 2126 if ( _constraint ) { | |
| 2127 // !!!!! | |
| 2128 Constraint *constraint = _constraint; | |
| 2129 if ( strcmp(_constraint->_func,"ALLOC_IN_RC") == 0 ) { | |
| 2130 reg_class = _constraint->_arg; | |
| 2131 } | |
| 2132 } | |
| 2133 | |
| 2134 return reg_class; | |
| 2135 } | |
| 2136 | |
| 2137 | |
| 2138 // Return the register class associated with 'leaf'. | |
| 2139 const char *OperandForm::in_reg_class(uint leaf, FormDict &globals) { | |
| 2140 const char *reg_class = NULL; // "RegMask::Empty"; | |
| 2141 | |
| 2142 if((_matrule == NULL) || (_matrule->is_chain_rule(globals))) { | |
| 2143 reg_class = constrained_reg_class(); | |
| 2144 return reg_class; | |
| 2145 } | |
| 2146 const char *result = NULL; | |
| 2147 const char *name = NULL; | |
| 2148 const char *type = NULL; | |
| 2149 // iterate through all base operands | |
| 2150 // until we reach the register that corresponds to "leaf" | |
| 2151 // This function is not looking for an ideal type. It needs the first | |
| 2152 // level user type associated with the leaf. | |
| 2153 for(uint idx = 0;_matrule->base_operand(idx,globals,result,name,type);++idx) { | |
| 2154 const Form *form = (_localNames[name] ? _localNames[name] : globals[result]); | |
| 2155 OperandForm *oper = form ? form->is_operand() : NULL; | |
| 2156 if( oper ) { | |
| 2157 reg_class = oper->constrained_reg_class(); | |
| 2158 if( reg_class ) { | |
| 2159 reg_class = reg_class; | |
| 2160 } else { | |
| 2161 // ShouldNotReachHere(); | |
| 2162 } | |
| 2163 } else { | |
| 2164 // ShouldNotReachHere(); | |
| 2165 } | |
| 2166 | |
| 2167 // Increment our target leaf position if current leaf is not a candidate. | |
| 2168 if( reg_class == NULL) ++leaf; | |
| 2169 // Exit the loop with the value of reg_class when at the correct index | |
| 2170 if( idx == leaf ) break; | |
| 2171 // May iterate through all base operands if reg_class for 'leaf' is NULL | |
| 2172 } | |
| 2173 return reg_class; | |
| 2174 } | |
| 2175 | |
| 2176 | |
| 2177 // Recursive call to construct list of top-level operands. | |
| 2178 // Implementation does not modify state of internal structures | |
| 2179 void OperandForm::build_components() { | |
| 2180 if (_matrule) _matrule->append_components(_localNames, _components); | |
| 2181 | |
| 2182 // Add parameters that "do not appear in match rule". | |
| 2183 const char *name; | |
| 2184 for (_parameters.reset(); (name = _parameters.iter()) != NULL;) { | |
| 2185 OperandForm *opForm = (OperandForm*)_localNames[name]; | |
| 2186 | |
| 2187 if ( _components.operand_position(name) == -1 ) { | |
| 2188 _components.insert(name, opForm->_ident, Component::INVALID, false); | |
| 2189 } | |
| 2190 } | |
| 2191 | |
| 2192 return; | |
| 2193 } | |
| 2194 | |
| 2195 int OperandForm::operand_position(const char *name, int usedef) { | |
| 2196 return _components.operand_position(name, usedef); | |
| 2197 } | |
| 2198 | |
| 2199 | |
| 2200 // Return zero-based position in component list, only counting constants; | |
| 2201 // Return -1 if not in list. | |
| 2202 int OperandForm::constant_position(FormDict &globals, const Component *last) { | |
| 2203 // Iterate through components and count constants preceeding 'constant' | |
| 2204 uint position = 0; | |
| 2205 Component *comp; | |
| 2206 _components.reset(); | |
| 2207 while( (comp = _components.iter()) != NULL && (comp != last) ) { | |
| 2208 // Special case for operands that take a single user-defined operand | |
| 2209 // Skip the initial definition in the component list. | |
| 2210 if( strcmp(comp->_name,this->_ident) == 0 ) continue; | |
| 2211 | |
| 2212 const char *type = comp->_type; | |
| 2213 // Lookup operand form for replacement variable's type | |
| 2214 const Form *form = globals[type]; | |
| 2215 assert( form != NULL, "Component's type not found"); | |
| 2216 OperandForm *oper = form ? form->is_operand() : NULL; | |
| 2217 if( oper ) { | |
| 2218 if( oper->_matrule->is_base_constant(globals) != Form::none ) { | |
| 2219 ++position; | |
| 2220 } | |
| 2221 } | |
| 2222 } | |
| 2223 | |
| 2224 // Check for being passed a component that was not in the list | |
| 2225 if( comp != last ) position = -1; | |
| 2226 | |
| 2227 return position; | |
| 2228 } | |
| 2229 // Provide position of constant by "name" | |
| 2230 int OperandForm::constant_position(FormDict &globals, const char *name) { | |
| 2231 const Component *comp = _components.search(name); | |
| 2232 int idx = constant_position( globals, comp ); | |
| 2233 | |
| 2234 return idx; | |
| 2235 } | |
| 2236 | |
| 2237 | |
| 2238 // Return zero-based position in component list, only counting constants; | |
| 2239 // Return -1 if not in list. | |
| 2240 int OperandForm::register_position(FormDict &globals, const char *reg_name) { | |
| 2241 // Iterate through components and count registers preceeding 'last' | |
| 2242 uint position = 0; | |
| 2243 Component *comp; | |
| 2244 _components.reset(); | |
| 2245 while( (comp = _components.iter()) != NULL | |
| 2246 && (strcmp(comp->_name,reg_name) != 0) ) { | |
| 2247 // Special case for operands that take a single user-defined operand | |
| 2248 // Skip the initial definition in the component list. | |
| 2249 if( strcmp(comp->_name,this->_ident) == 0 ) continue; | |
| 2250 | |
| 2251 const char *type = comp->_type; | |
| 2252 // Lookup operand form for component's type | |
| 2253 const Form *form = globals[type]; | |
| 2254 assert( form != NULL, "Component's type not found"); | |
| 2255 OperandForm *oper = form ? form->is_operand() : NULL; | |
| 2256 if( oper ) { | |
| 2257 if( oper->_matrule->is_base_register(globals) ) { | |
| 2258 ++position; | |
| 2259 } | |
| 2260 } | |
| 2261 } | |
| 2262 | |
| 2263 return position; | |
| 2264 } | |
| 2265 | |
| 2266 | |
| 2267 const char *OperandForm::reduce_result() const { | |
| 2268 return _ident; | |
| 2269 } | |
| 2270 // Return the name of the operand on the right hand side of the binary match | |
| 2271 // Return NULL if there is no right hand side | |
| 2272 const char *OperandForm::reduce_right(FormDict &globals) const { | |
| 2273 return ( _matrule ? _matrule->reduce_right(globals) : NULL ); | |
| 2274 } | |
| 2275 | |
| 2276 // Similar for left | |
| 2277 const char *OperandForm::reduce_left(FormDict &globals) const { | |
| 2278 return ( _matrule ? _matrule->reduce_left(globals) : NULL ); | |
| 2279 } | |
| 2280 | |
| 2281 | |
| 2282 // --------------------------- FILE *output_routines | |
| 2283 // | |
| 2284 // Output code for disp_is_oop, if true. | |
| 2285 void OperandForm::disp_is_oop(FILE *fp, FormDict &globals) { | |
| 2286 // Check it is a memory interface with a non-user-constant disp field | |
| 2287 if ( this->_interface == NULL ) return; | |
| 2288 MemInterface *mem_interface = this->_interface->is_MemInterface(); | |
| 2289 if ( mem_interface == NULL ) return; | |
| 2290 const char *disp = mem_interface->_disp; | |
| 2291 if ( *disp != '$' ) return; | |
| 2292 | |
| 2293 // Lookup replacement variable in operand's component list | |
| 2294 const char *rep_var = disp + 1; | |
| 2295 const Component *comp = this->_components.search(rep_var); | |
| 2296 assert( comp != NULL, "Replacement variable not found in components"); | |
| 2297 // Lookup operand form for replacement variable's type | |
| 2298 const char *type = comp->_type; | |
| 2299 Form *form = (Form*)globals[type]; | |
| 2300 assert( form != NULL, "Replacement variable's type not found"); | |
| 2301 OperandForm *op = form->is_operand(); | |
| 2302 assert( op, "Memory Interface 'disp' can only emit an operand form"); | |
| 2303 // Check if this is a ConP, which may require relocation | |
| 2304 if ( op->is_base_constant(globals) == Form::idealP ) { | |
| 2305 // Find the constant's index: _c0, _c1, _c2, ... , _cN | |
| 2306 uint idx = op->constant_position( globals, rep_var); | |
| 2307 fprintf(fp," virtual bool disp_is_oop() const {", _ident); | |
| 2308 fprintf(fp, " return _c%d->isa_oop_ptr();", idx); | |
| 2309 fprintf(fp, " }\n"); | |
| 2310 } | |
| 2311 } | |
| 2312 | |
| 2313 // Generate code for internal and external format methods | |
| 2314 // | |
| 2315 // internal access to reg# node->_idx | |
| 2316 // access to subsumed constant _c0, _c1, | |
| 2317 void OperandForm::int_format(FILE *fp, FormDict &globals, uint index) { | |
| 2318 Form::DataType dtype; | |
| 2319 if (_matrule && (_matrule->is_base_register(globals) || | |
| 2320 strcmp(ideal_type(globalAD->globalNames()), "RegFlags") == 0)) { | |
| 2321 // !!!!! !!!!! | |
| 2322 fprintf(fp, "{ char reg_str[128];\n"); | |
| 2323 fprintf(fp," ra->dump_register(node,reg_str);\n"); | |
| 2324 fprintf(fp," tty->print(\"%cs\",reg_str);\n",'%'); | |
| 2325 fprintf(fp," }\n"); | |
| 2326 } else if (_matrule && (dtype = _matrule->is_base_constant(globals)) != Form::none) { | |
| 2327 format_constant( fp, index, dtype ); | |
| 2328 } else if (ideal_to_sReg_type(_ident) != Form::none) { | |
| 2329 // Special format for Stack Slot Register | |
| 2330 fprintf(fp, "{ char reg_str[128];\n"); | |
| 2331 fprintf(fp," ra->dump_register(node,reg_str);\n"); | |
| 2332 fprintf(fp," tty->print(\"%cs\",reg_str);\n",'%'); | |
| 2333 fprintf(fp," }\n"); | |
| 2334 } else { | |
| 2335 fprintf(fp,"tty->print(\"No format defined for %s\n\");\n", _ident); | |
| 2336 fflush(fp); | |
| 2337 fprintf(stderr,"No format defined for %s\n", _ident); | |
| 2338 dump(); | |
| 2339 assert( false,"Internal error:\n output_internal_operand() attempting to output other than a Register or Constant"); | |
| 2340 } | |
| 2341 } | |
| 2342 | |
| 2343 // Similar to "int_format" but for cases where data is external to operand | |
| 2344 // external access to reg# node->in(idx)->_idx, | |
| 2345 void OperandForm::ext_format(FILE *fp, FormDict &globals, uint index) { | |
| 2346 Form::DataType dtype; | |
| 2347 if (_matrule && (_matrule->is_base_register(globals) || | |
| 2348 strcmp(ideal_type(globalAD->globalNames()), "RegFlags") == 0)) { | |
| 2349 fprintf(fp, "{ char reg_str[128];\n"); | |
| 2350 fprintf(fp," ra->dump_register(node->in(idx"); | |
| 2351 if ( index != 0 ) fprintf(fp, "+%d",index); | |
| 2352 fprintf(fp, "),reg_str);\n"); | |
| 2353 fprintf(fp," tty->print(\"%cs\",reg_str);\n",'%'); | |
| 2354 fprintf(fp," }\n"); | |
| 2355 } else if (_matrule && (dtype = _matrule->is_base_constant(globals)) != Form::none) { | |
| 2356 format_constant( fp, index, dtype ); | |
| 2357 } else if (ideal_to_sReg_type(_ident) != Form::none) { | |
| 2358 // Special format for Stack Slot Register | |
| 2359 fprintf(fp, "{ char reg_str[128];\n"); | |
| 2360 fprintf(fp," ra->dump_register(node->in(idx"); | |
| 2361 if ( index != 0 ) fprintf(fp, "+%d",index); | |
| 2362 fprintf(fp, "),reg_str);\n"); | |
| 2363 fprintf(fp," tty->print(\"%cs\",reg_str);\n",'%'); | |
| 2364 fprintf(fp," }\n"); | |
| 2365 } else { | |
| 2366 fprintf(fp,"tty->print(\"No format defined for %s\n\");\n", _ident); | |
| 2367 assert( false,"Internal error:\n output_external_operand() attempting to output other than a Register or Constant"); | |
| 2368 } | |
| 2369 } | |
| 2370 | |
| 2371 void OperandForm::format_constant(FILE *fp, uint const_index, uint const_type) { | |
| 2372 switch(const_type) { | |
|
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2373 case Form::idealI: fprintf(fp,"st->print(\"#%%d\", _c%d);\n", const_index); break; |
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2374 case Form::idealP: fprintf(fp,"_c%d->dump_on(st);\n", const_index); break; |
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2375 case Form::idealN: fprintf(fp,"_c%d->dump_on(st);\n", const_index); break; |
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2376 case Form::idealL: fprintf(fp,"st->print(\"#%%lld\", _c%d);\n", const_index); break; |
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2377 case Form::idealF: fprintf(fp,"st->print(\"#%%f\", _c%d);\n", const_index); break; |
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2378 case Form::idealD: fprintf(fp,"st->print(\"#%%f\", _c%d);\n", const_index); break; |
| 0 | 2379 default: |
| 2380 assert( false, "ShouldNotReachHere()"); | |
| 2381 } | |
| 2382 } | |
| 2383 | |
| 2384 // Return the operand form corresponding to the given index, else NULL. | |
| 2385 OperandForm *OperandForm::constant_operand(FormDict &globals, | |
| 2386 uint index) { | |
| 2387 // !!!!! | |
| 2388 // Check behavior on complex operands | |
| 2389 uint n_consts = num_consts(globals); | |
| 2390 if( n_consts > 0 ) { | |
| 2391 uint i = 0; | |
| 2392 const char *type; | |
| 2393 Component *comp; | |
| 2394 _components.reset(); | |
| 2395 if ((comp = _components.iter()) == NULL) { | |
| 2396 assert(n_consts == 1, "Bad component list detected.\n"); | |
| 2397 // Current operand is THE operand | |
| 2398 if ( index == 0 ) { | |
| 2399 return this; | |
| 2400 } | |
| 2401 } // end if NULL | |
| 2402 else { | |
| 2403 // Skip the first component, it can not be a DEF of a constant | |
| 2404 do { | |
| 2405 type = comp->base_type(globals); | |
| 2406 // Check that "type" is a 'ConI', 'ConP', ... | |
| 2407 if ( ideal_to_const_type(type) != Form::none ) { | |
| 2408 // When at correct component, get corresponding Operand | |
| 2409 if ( index == 0 ) { | |
| 2410 return globals[comp->_type]->is_operand(); | |
| 2411 } | |
| 2412 // Decrement number of constants to go | |
| 2413 --index; | |
| 2414 } | |
| 2415 } while((comp = _components.iter()) != NULL); | |
| 2416 } | |
| 2417 } | |
| 2418 | |
| 2419 // Did not find a constant for this index. | |
| 2420 return NULL; | |
| 2421 } | |
| 2422 | |
| 2423 // If this operand has a single ideal type, return its type | |
| 2424 Form::DataType OperandForm::simple_type(FormDict &globals) const { | |
| 2425 const char *type_name = ideal_type(globals); | |
| 2426 Form::DataType type = type_name ? ideal_to_const_type( type_name ) | |
| 2427 : Form::none; | |
| 2428 return type; | |
| 2429 } | |
| 2430 | |
| 2431 Form::DataType OperandForm::is_base_constant(FormDict &globals) const { | |
| 2432 if ( _matrule == NULL ) return Form::none; | |
| 2433 | |
| 2434 return _matrule->is_base_constant(globals); | |
| 2435 } | |
| 2436 | |
| 2437 // "true" if this operand is a simple type that is swallowed | |
| 2438 bool OperandForm::swallowed(FormDict &globals) const { | |
| 2439 Form::DataType type = simple_type(globals); | |
| 2440 if( type != Form::none ) { | |
| 2441 return true; | |
| 2442 } | |
| 2443 | |
| 2444 return false; | |
| 2445 } | |
| 2446 | |
| 2447 // Output code to access the value of the index'th constant | |
| 2448 void OperandForm::access_constant(FILE *fp, FormDict &globals, | |
| 2449 uint const_index) { | |
| 2450 OperandForm *oper = constant_operand(globals, const_index); | |
| 2451 assert( oper, "Index exceeds number of constants in operand"); | |
| 2452 Form::DataType dtype = oper->is_base_constant(globals); | |
| 2453 | |
| 2454 switch(dtype) { | |
| 2455 case idealI: fprintf(fp,"_c%d", const_index); break; | |
| 2456 case idealP: fprintf(fp,"_c%d->get_con()",const_index); break; | |
| 2457 case idealL: fprintf(fp,"_c%d", const_index); break; | |
| 2458 case idealF: fprintf(fp,"_c%d", const_index); break; | |
| 2459 case idealD: fprintf(fp,"_c%d", const_index); break; | |
| 2460 default: | |
| 2461 assert( false, "ShouldNotReachHere()"); | |
| 2462 } | |
| 2463 } | |
| 2464 | |
| 2465 | |
| 2466 void OperandForm::dump() { | |
| 2467 output(stderr); | |
| 2468 } | |
| 2469 | |
| 2470 void OperandForm::output(FILE *fp) { | |
| 2471 fprintf(fp,"\nOperand: %s\n", (_ident?_ident:"")); | |
| 2472 if (_matrule) _matrule->dump(); | |
| 2473 if (_interface) _interface->dump(); | |
| 2474 if (_attribs) _attribs->dump(); | |
| 2475 if (_predicate) _predicate->dump(); | |
| 2476 if (_constraint) _constraint->dump(); | |
| 2477 if (_construct) _construct->dump(); | |
| 2478 if (_format) _format->dump(); | |
| 2479 } | |
| 2480 | |
| 2481 //------------------------------Constraint------------------------------------- | |
| 2482 Constraint::Constraint(const char *func, const char *arg) | |
| 2483 : _func(func), _arg(arg) { | |
| 2484 } | |
| 2485 Constraint::~Constraint() { /* not owner of char* */ | |
| 2486 } | |
| 2487 | |
| 2488 bool Constraint::stack_slots_only() const { | |
| 2489 return strcmp(_func, "ALLOC_IN_RC") == 0 | |
| 2490 && strcmp(_arg, "stack_slots") == 0; | |
| 2491 } | |
| 2492 | |
| 2493 void Constraint::dump() { | |
| 2494 output(stderr); | |
| 2495 } | |
| 2496 | |
| 2497 void Constraint::output(FILE *fp) { // Write info to output files | |
| 2498 assert((_func != NULL && _arg != NULL),"missing constraint function or arg"); | |
| 2499 fprintf(fp,"Constraint: %s ( %s )\n", _func, _arg); | |
| 2500 } | |
| 2501 | |
| 2502 //------------------------------Predicate-------------------------------------- | |
| 2503 Predicate::Predicate(char *pr) | |
| 2504 : _pred(pr) { | |
| 2505 } | |
| 2506 Predicate::~Predicate() { | |
| 2507 } | |
| 2508 | |
| 2509 void Predicate::dump() { | |
| 2510 output(stderr); | |
| 2511 } | |
| 2512 | |
| 2513 void Predicate::output(FILE *fp) { | |
| 2514 fprintf(fp,"Predicate"); // Write to output files | |
| 2515 } | |
| 2516 //------------------------------Interface-------------------------------------- | |
| 2517 Interface::Interface(const char *name) : _name(name) { | |
| 2518 } | |
| 2519 Interface::~Interface() { | |
| 2520 } | |
| 2521 | |
| 2522 Form::InterfaceType Interface::interface_type(FormDict &globals) const { | |
| 2523 Interface *thsi = (Interface*)this; | |
| 2524 if ( thsi->is_RegInterface() ) return Form::register_interface; | |
| 2525 if ( thsi->is_MemInterface() ) return Form::memory_interface; | |
| 2526 if ( thsi->is_ConstInterface() ) return Form::constant_interface; | |
| 2527 if ( thsi->is_CondInterface() ) return Form::conditional_interface; | |
| 2528 | |
| 2529 return Form::no_interface; | |
| 2530 } | |
| 2531 | |
| 2532 RegInterface *Interface::is_RegInterface() { | |
| 2533 if ( strcmp(_name,"REG_INTER") != 0 ) | |
| 2534 return NULL; | |
| 2535 return (RegInterface*)this; | |
| 2536 } | |
| 2537 MemInterface *Interface::is_MemInterface() { | |
| 2538 if ( strcmp(_name,"MEMORY_INTER") != 0 ) return NULL; | |
| 2539 return (MemInterface*)this; | |
| 2540 } | |
| 2541 ConstInterface *Interface::is_ConstInterface() { | |
| 2542 if ( strcmp(_name,"CONST_INTER") != 0 ) return NULL; | |
| 2543 return (ConstInterface*)this; | |
| 2544 } | |
| 2545 CondInterface *Interface::is_CondInterface() { | |
| 2546 if ( strcmp(_name,"COND_INTER") != 0 ) return NULL; | |
| 2547 return (CondInterface*)this; | |
| 2548 } | |
| 2549 | |
| 2550 | |
| 2551 void Interface::dump() { | |
| 2552 output(stderr); | |
| 2553 } | |
| 2554 | |
| 2555 // Write info to output files | |
| 2556 void Interface::output(FILE *fp) { | |
| 2557 fprintf(fp,"Interface: %s\n", (_name ? _name : "") ); | |
| 2558 } | |
| 2559 | |
| 2560 //------------------------------RegInterface----------------------------------- | |
| 2561 RegInterface::RegInterface() : Interface("REG_INTER") { | |
| 2562 } | |
| 2563 RegInterface::~RegInterface() { | |
| 2564 } | |
| 2565 | |
| 2566 void RegInterface::dump() { | |
| 2567 output(stderr); | |
| 2568 } | |
| 2569 | |
| 2570 // Write info to output files | |
| 2571 void RegInterface::output(FILE *fp) { | |
| 2572 Interface::output(fp); | |
| 2573 } | |
| 2574 | |
| 2575 //------------------------------ConstInterface--------------------------------- | |
| 2576 ConstInterface::ConstInterface() : Interface("CONST_INTER") { | |
| 2577 } | |
| 2578 ConstInterface::~ConstInterface() { | |
| 2579 } | |
| 2580 | |
| 2581 void ConstInterface::dump() { | |
| 2582 output(stderr); | |
| 2583 } | |
| 2584 | |
| 2585 // Write info to output files | |
| 2586 void ConstInterface::output(FILE *fp) { | |
| 2587 Interface::output(fp); | |
| 2588 } | |
| 2589 | |
| 2590 //------------------------------MemInterface----------------------------------- | |
| 2591 MemInterface::MemInterface(char *base, char *index, char *scale, char *disp) | |
| 2592 : Interface("MEMORY_INTER"), _base(base), _index(index), _scale(scale), _disp(disp) { | |
| 2593 } | |
| 2594 MemInterface::~MemInterface() { | |
| 2595 // not owner of any character arrays | |
| 2596 } | |
| 2597 | |
| 2598 void MemInterface::dump() { | |
| 2599 output(stderr); | |
| 2600 } | |
| 2601 | |
| 2602 // Write info to output files | |
| 2603 void MemInterface::output(FILE *fp) { | |
| 2604 Interface::output(fp); | |
| 2605 if ( _base != NULL ) fprintf(fp," base == %s\n", _base); | |
| 2606 if ( _index != NULL ) fprintf(fp," index == %s\n", _index); | |
| 2607 if ( _scale != NULL ) fprintf(fp," scale == %s\n", _scale); | |
| 2608 if ( _disp != NULL ) fprintf(fp," disp == %s\n", _disp); | |
| 2609 // fprintf(fp,"\n"); | |
| 2610 } | |
| 2611 | |
| 2612 //------------------------------CondInterface---------------------------------- | |
| 2613 CondInterface::CondInterface(char *equal, char *not_equal, | |
| 2614 char *less, char *greater_equal, | |
| 2615 char *less_equal, char *greater) | |
| 2616 : Interface("COND_INTER"), | |
| 2617 _equal(equal), _not_equal(not_equal), | |
| 2618 _less(less), _greater_equal(greater_equal), | |
| 2619 _less_equal(less_equal), _greater(greater) { | |
| 2620 // | |
| 2621 } | |
| 2622 CondInterface::~CondInterface() { | |
| 2623 // not owner of any character arrays | |
| 2624 } | |
| 2625 | |
| 2626 void CondInterface::dump() { | |
| 2627 output(stderr); | |
| 2628 } | |
| 2629 | |
| 2630 // Write info to output files | |
| 2631 void CondInterface::output(FILE *fp) { | |
| 2632 Interface::output(fp); | |
| 2633 if ( _equal != NULL ) fprintf(fp," equal == %s\n", _equal); | |
| 2634 if ( _not_equal != NULL ) fprintf(fp," not_equal == %s\n", _not_equal); | |
| 2635 if ( _less != NULL ) fprintf(fp," less == %s\n", _less); | |
| 2636 if ( _greater_equal != NULL ) fprintf(fp," greater_equal == %s\n", _greater_equal); | |
| 2637 if ( _less_equal != NULL ) fprintf(fp," less_equal == %s\n", _less_equal); | |
| 2638 if ( _greater != NULL ) fprintf(fp," greater == %s\n", _greater); | |
| 2639 // fprintf(fp,"\n"); | |
| 2640 } | |
| 2641 | |
| 2642 //------------------------------ConstructRule---------------------------------- | |
| 2643 ConstructRule::ConstructRule(char *cnstr) | |
| 2644 : _construct(cnstr) { | |
| 2645 } | |
| 2646 ConstructRule::~ConstructRule() { | |
| 2647 } | |
| 2648 | |
| 2649 void ConstructRule::dump() { | |
| 2650 output(stderr); | |
| 2651 } | |
| 2652 | |
| 2653 void ConstructRule::output(FILE *fp) { | |
| 2654 fprintf(fp,"\nConstruct Rule\n"); // Write to output files | |
| 2655 } | |
| 2656 | |
| 2657 | |
| 2658 //==============================Shared Forms=================================== | |
| 2659 //------------------------------AttributeForm---------------------------------- | |
| 2660 int AttributeForm::_insId = 0; // start counter at 0 | |
| 2661 int AttributeForm::_opId = 0; // start counter at 0 | |
| 2662 const char* AttributeForm::_ins_cost = "ins_cost"; // required name | |
| 2663 const char* AttributeForm::_ins_pc_relative = "ins_pc_relative"; | |
| 2664 const char* AttributeForm::_op_cost = "op_cost"; // required name | |
| 2665 | |
| 2666 AttributeForm::AttributeForm(char *attr, int type, char *attrdef) | |
| 2667 : Form(Form::ATTR), _attrname(attr), _atype(type), _attrdef(attrdef) { | |
| 2668 if (type==OP_ATTR) { | |
| 2669 id = ++_opId; | |
| 2670 } | |
| 2671 else if (type==INS_ATTR) { | |
| 2672 id = ++_insId; | |
| 2673 } | |
| 2674 else assert( false,""); | |
| 2675 } | |
| 2676 AttributeForm::~AttributeForm() { | |
| 2677 } | |
| 2678 | |
| 2679 // Dynamic type check | |
| 2680 AttributeForm *AttributeForm::is_attribute() const { | |
| 2681 return (AttributeForm*)this; | |
| 2682 } | |
| 2683 | |
| 2684 | |
| 2685 // inlined // int AttributeForm::type() { return id;} | |
| 2686 | |
| 2687 void AttributeForm::dump() { | |
| 2688 output(stderr); | |
| 2689 } | |
| 2690 | |
| 2691 void AttributeForm::output(FILE *fp) { | |
| 2692 if( _attrname && _attrdef ) { | |
| 2693 fprintf(fp,"\n// AttributeForm \nstatic const int %s = %s;\n", | |
| 2694 _attrname, _attrdef); | |
| 2695 } | |
| 2696 else { | |
| 2697 fprintf(fp,"\n// AttributeForm missing name %s or definition %s\n", | |
| 2698 (_attrname?_attrname:""), (_attrdef?_attrdef:"") ); | |
| 2699 } | |
| 2700 } | |
| 2701 | |
| 2702 //------------------------------Component-------------------------------------- | |
| 2703 Component::Component(const char *name, const char *type, int usedef) | |
| 2704 : _name(name), _type(type), _usedef(usedef) { | |
| 2705 _ftype = Form::COMP; | |
| 2706 } | |
| 2707 Component::~Component() { | |
| 2708 } | |
| 2709 | |
| 2710 // True if this component is equal to the parameter. | |
| 2711 bool Component::is(int use_def_kill_enum) const { | |
| 2712 return (_usedef == use_def_kill_enum ? true : false); | |
| 2713 } | |
| 2714 // True if this component is used/def'd/kill'd as the parameter suggests. | |
| 2715 bool Component::isa(int use_def_kill_enum) const { | |
| 2716 return (_usedef & use_def_kill_enum) == use_def_kill_enum; | |
| 2717 } | |
| 2718 | |
| 2719 // Extend this component with additional use/def/kill behavior | |
| 2720 int Component::promote_use_def_info(int new_use_def) { | |
| 2721 _usedef |= new_use_def; | |
| 2722 | |
| 2723 return _usedef; | |
| 2724 } | |
| 2725 | |
| 2726 // Check the base type of this component, if it has one | |
| 2727 const char *Component::base_type(FormDict &globals) { | |
| 2728 const Form *frm = globals[_type]; | |
| 2729 if (frm == NULL) return NULL; | |
| 2730 OperandForm *op = frm->is_operand(); | |
| 2731 if (op == NULL) return NULL; | |
| 2732 if (op->ideal_only()) return op->_ident; | |
| 2733 return (char *)op->ideal_type(globals); | |
| 2734 } | |
| 2735 | |
| 2736 void Component::dump() { | |
| 2737 output(stderr); | |
| 2738 } | |
| 2739 | |
| 2740 void Component::output(FILE *fp) { | |
| 2741 fprintf(fp,"Component:"); // Write to output files | |
| 2742 fprintf(fp, " name = %s", _name); | |
| 2743 fprintf(fp, ", type = %s", _type); | |
| 2744 const char * usedef = "Undefined Use/Def info"; | |
| 2745 switch (_usedef) { | |
| 2746 case USE: usedef = "USE"; break; | |
| 2747 case USE_DEF: usedef = "USE_DEF"; break; | |
| 2748 case USE_KILL: usedef = "USE_KILL"; break; | |
| 2749 case KILL: usedef = "KILL"; break; | |
| 2750 case TEMP: usedef = "TEMP"; break; | |
| 2751 case DEF: usedef = "DEF"; break; | |
| 2752 default: assert(false, "unknown effect"); | |
| 2753 } | |
| 2754 fprintf(fp, ", use/def = %s\n", usedef); | |
| 2755 } | |
| 2756 | |
| 2757 | |
| 2758 //------------------------------ComponentList--------------------------------- | |
| 2759 ComponentList::ComponentList() : NameList(), _matchcnt(0) { | |
| 2760 } | |
| 2761 ComponentList::~ComponentList() { | |
| 2762 // // This list may not own its elements if copied via assignment | |
| 2763 // Component *component; | |
| 2764 // for (reset(); (component = iter()) != NULL;) { | |
| 2765 // delete component; | |
| 2766 // } | |
| 2767 } | |
| 2768 | |
| 2769 void ComponentList::insert(Component *component, bool mflag) { | |
| 2770 NameList::addName((char *)component); | |
| 2771 if(mflag) _matchcnt++; | |
| 2772 } | |
| 2773 void ComponentList::insert(const char *name, const char *opType, int usedef, | |
| 2774 bool mflag) { | |
| 2775 Component * component = new Component(name, opType, usedef); | |
| 2776 insert(component, mflag); | |
| 2777 } | |
| 2778 Component *ComponentList::current() { return (Component*)NameList::current(); } | |
| 2779 Component *ComponentList::iter() { return (Component*)NameList::iter(); } | |
| 2780 Component *ComponentList::match_iter() { | |
| 2781 if(_iter < _matchcnt) return (Component*)NameList::iter(); | |
| 2782 return NULL; | |
| 2783 } | |
| 2784 Component *ComponentList::post_match_iter() { | |
| 2785 Component *comp = iter(); | |
| 2786 // At end of list? | |
| 2787 if ( comp == NULL ) { | |
| 2788 return comp; | |
| 2789 } | |
| 2790 // In post-match components? | |
| 2791 if (_iter > match_count()-1) { | |
| 2792 return comp; | |
| 2793 } | |
| 2794 | |
| 2795 return post_match_iter(); | |
| 2796 } | |
| 2797 | |
| 2798 void ComponentList::reset() { NameList::reset(); } | |
| 2799 int ComponentList::count() { return NameList::count(); } | |
| 2800 | |
| 2801 Component *ComponentList::operator[](int position) { | |
| 2802 // Shortcut complete iteration if there are not enough entries | |
| 2803 if (position >= count()) return NULL; | |
| 2804 | |
| 2805 int index = 0; | |
| 2806 Component *component = NULL; | |
| 2807 for (reset(); (component = iter()) != NULL;) { | |
| 2808 if (index == position) { | |
| 2809 return component; | |
| 2810 } | |
| 2811 ++index; | |
| 2812 } | |
| 2813 | |
| 2814 return NULL; | |
| 2815 } | |
| 2816 | |
| 2817 const Component *ComponentList::search(const char *name) { | |
| 2818 PreserveIter pi(this); | |
| 2819 reset(); | |
| 2820 for( Component *comp = NULL; ((comp = iter()) != NULL); ) { | |
| 2821 if( strcmp(comp->_name,name) == 0 ) return comp; | |
| 2822 } | |
| 2823 | |
| 2824 return NULL; | |
| 2825 } | |
| 2826 | |
| 2827 // Return number of USEs + number of DEFs | |
| 2828 // When there are no components, or the first component is a USE, | |
| 2829 // then we add '1' to hold a space for the 'result' operand. | |
| 2830 int ComponentList::num_operands() { | |
| 2831 PreserveIter pi(this); | |
| 2832 uint count = 1; // result operand | |
| 2833 uint position = 0; | |
| 2834 | |
| 2835 Component *component = NULL; | |
| 2836 for( reset(); (component = iter()) != NULL; ++position ) { | |
| 2837 if( component->isa(Component::USE) || | |
| 2838 ( position == 0 && (! component->isa(Component::DEF))) ) { | |
| 2839 ++count; | |
| 2840 } | |
| 2841 } | |
| 2842 | |
| 2843 return count; | |
| 2844 } | |
| 2845 | |
| 2846 // Return zero-based position in list; -1 if not in list. | |
| 2847 // if parameter 'usedef' is ::USE, it will match USE, USE_DEF, ... | |
| 2848 int ComponentList::operand_position(const char *name, int usedef) { | |
| 2849 PreserveIter pi(this); | |
| 2850 int position = 0; | |
| 2851 int num_opnds = num_operands(); | |
| 2852 Component *component; | |
| 2853 Component* preceding_non_use = NULL; | |
| 2854 Component* first_def = NULL; | |
| 2855 for (reset(); (component = iter()) != NULL; ++position) { | |
| 2856 // When the first component is not a DEF, | |
| 2857 // leave space for the result operand! | |
| 2858 if ( position==0 && (! component->isa(Component::DEF)) ) { | |
| 2859 ++position; | |
| 2860 ++num_opnds; | |
| 2861 } | |
| 2862 if (strcmp(name, component->_name)==0 && (component->isa(usedef))) { | |
| 2863 // When the first entry in the component list is a DEF and a USE | |
| 2864 // Treat them as being separate, a DEF first, then a USE | |
| 2865 if( position==0 | |
| 2866 && usedef==Component::USE && component->isa(Component::DEF) ) { | |
| 2867 assert(position+1 < num_opnds, "advertised index in bounds"); | |
| 2868 return position+1; | |
| 2869 } else { | |
| 2870 if( preceding_non_use && strcmp(component->_name, preceding_non_use->_name) ) { | |
| 2871 fprintf(stderr, "the name '%s' should not precede the name '%s'\n", preceding_non_use->_name, name); | |
| 2872 } | |
| 2873 if( position >= num_opnds ) { | |
| 2874 fprintf(stderr, "the name '%s' is too late in its name list\n", name); | |
| 2875 } | |
| 2876 assert(position < num_opnds, "advertised index in bounds"); | |
| 2877 return position; | |
| 2878 } | |
| 2879 } | |
| 2880 if( component->isa(Component::DEF) | |
| 2881 && component->isa(Component::USE) ) { | |
| 2882 ++position; | |
| 2883 if( position != 1 ) --position; // only use two slots for the 1st USE_DEF | |
| 2884 } | |
| 2885 if( component->isa(Component::DEF) && !first_def ) { | |
| 2886 first_def = component; | |
| 2887 } | |
| 2888 if( !component->isa(Component::USE) && component != first_def ) { | |
| 2889 preceding_non_use = component; | |
| 2890 } else if( preceding_non_use && !strcmp(component->_name, preceding_non_use->_name) ) { | |
| 2891 preceding_non_use = NULL; | |
| 2892 } | |
| 2893 } | |
| 2894 return Not_in_list; | |
| 2895 } | |
| 2896 | |
| 2897 // Find position for this name, regardless of use/def information | |
| 2898 int ComponentList::operand_position(const char *name) { | |
| 2899 PreserveIter pi(this); | |
| 2900 int position = 0; | |
| 2901 Component *component; | |
| 2902 for (reset(); (component = iter()) != NULL; ++position) { | |
| 2903 // When the first component is not a DEF, | |
| 2904 // leave space for the result operand! | |
| 2905 if ( position==0 && (! component->isa(Component::DEF)) ) { | |
| 2906 ++position; | |
| 2907 } | |
| 2908 if (strcmp(name, component->_name)==0) { | |
| 2909 return position; | |
| 2910 } | |
| 2911 if( component->isa(Component::DEF) | |
| 2912 && component->isa(Component::USE) ) { | |
| 2913 ++position; | |
| 2914 if( position != 1 ) --position; // only use two slots for the 1st USE_DEF | |
| 2915 } | |
| 2916 } | |
| 2917 return Not_in_list; | |
| 2918 } | |
| 2919 | |
| 2920 int ComponentList::operand_position_format(const char *name) { | |
| 2921 PreserveIter pi(this); | |
| 2922 int first_position = operand_position(name); | |
| 2923 int use_position = operand_position(name, Component::USE); | |
| 2924 | |
| 2925 return ((first_position < use_position) ? use_position : first_position); | |
| 2926 } | |
| 2927 | |
| 2928 int ComponentList::label_position() { | |
| 2929 PreserveIter pi(this); | |
| 2930 int position = 0; | |
| 2931 reset(); | |
| 2932 for( Component *comp; (comp = iter()) != NULL; ++position) { | |
| 2933 // When the first component is not a DEF, | |
| 2934 // leave space for the result operand! | |
| 2935 if ( position==0 && (! comp->isa(Component::DEF)) ) { | |
| 2936 ++position; | |
| 2937 } | |
| 2938 if (strcmp(comp->_type, "label")==0) { | |
| 2939 return position; | |
| 2940 } | |
| 2941 if( comp->isa(Component::DEF) | |
| 2942 && comp->isa(Component::USE) ) { | |
| 2943 ++position; | |
| 2944 if( position != 1 ) --position; // only use two slots for the 1st USE_DEF | |
| 2945 } | |
| 2946 } | |
| 2947 | |
| 2948 return -1; | |
| 2949 } | |
| 2950 | |
| 2951 int ComponentList::method_position() { | |
| 2952 PreserveIter pi(this); | |
| 2953 int position = 0; | |
| 2954 reset(); | |
| 2955 for( Component *comp; (comp = iter()) != NULL; ++position) { | |
| 2956 // When the first component is not a DEF, | |
| 2957 // leave space for the result operand! | |
| 2958 if ( position==0 && (! comp->isa(Component::DEF)) ) { | |
| 2959 ++position; | |
| 2960 } | |
| 2961 if (strcmp(comp->_type, "method")==0) { | |
| 2962 return position; | |
| 2963 } | |
| 2964 if( comp->isa(Component::DEF) | |
| 2965 && comp->isa(Component::USE) ) { | |
| 2966 ++position; | |
| 2967 if( position != 1 ) --position; // only use two slots for the 1st USE_DEF | |
| 2968 } | |
| 2969 } | |
| 2970 | |
| 2971 return -1; | |
| 2972 } | |
| 2973 | |
| 2974 void ComponentList::dump() { output(stderr); } | |
| 2975 | |
| 2976 void ComponentList::output(FILE *fp) { | |
| 2977 PreserveIter pi(this); | |
| 2978 fprintf(fp, "\n"); | |
| 2979 Component *component; | |
| 2980 for (reset(); (component = iter()) != NULL;) { | |
| 2981 component->output(fp); | |
| 2982 } | |
| 2983 fprintf(fp, "\n"); | |
| 2984 } | |
| 2985 | |
| 2986 //------------------------------MatchNode-------------------------------------- | |
| 2987 MatchNode::MatchNode(ArchDesc &ad, const char *result, const char *mexpr, | |
| 2988 const char *opType, MatchNode *lChild, MatchNode *rChild) | |
| 2989 : _AD(ad), _result(result), _name(mexpr), _opType(opType), | |
| 2990 _lChild(lChild), _rChild(rChild), _internalop(0), _numleaves(0), | |
| 2991 _commutative_id(0) { | |
| 2992 _numleaves = (lChild ? lChild->_numleaves : 0) | |
| 2993 + (rChild ? rChild->_numleaves : 0); | |
| 2994 } | |
| 2995 | |
| 2996 MatchNode::MatchNode(ArchDesc &ad, MatchNode& mnode) | |
| 2997 : _AD(ad), _result(mnode._result), _name(mnode._name), | |
| 2998 _opType(mnode._opType), _lChild(mnode._lChild), _rChild(mnode._rChild), | |
| 2999 _internalop(0), _numleaves(mnode._numleaves), | |
| 3000 _commutative_id(mnode._commutative_id) { | |
| 3001 } | |
| 3002 | |
| 3003 MatchNode::MatchNode(ArchDesc &ad, MatchNode& mnode, int clone) | |
| 3004 : _AD(ad), _result(mnode._result), _name(mnode._name), | |
| 3005 _opType(mnode._opType), | |
| 3006 _internalop(0), _numleaves(mnode._numleaves), | |
| 3007 _commutative_id(mnode._commutative_id) { | |
| 3008 if (mnode._lChild) { | |
| 3009 _lChild = new MatchNode(ad, *mnode._lChild, clone); | |
| 3010 } else { | |
| 3011 _lChild = NULL; | |
| 3012 } | |
| 3013 if (mnode._rChild) { | |
| 3014 _rChild = new MatchNode(ad, *mnode._rChild, clone); | |
| 3015 } else { | |
| 3016 _rChild = NULL; | |
| 3017 } | |
| 3018 } | |
| 3019 | |
| 3020 MatchNode::~MatchNode() { | |
| 3021 // // This node may not own its children if copied via assignment | |
| 3022 // if( _lChild ) delete _lChild; | |
| 3023 // if( _rChild ) delete _rChild; | |
| 3024 } | |
| 3025 | |
| 3026 bool MatchNode::find_type(const char *type, int &position) const { | |
| 3027 if ( (_lChild != NULL) && (_lChild->find_type(type, position)) ) return true; | |
| 3028 if ( (_rChild != NULL) && (_rChild->find_type(type, position)) ) return true; | |
| 3029 | |
| 3030 if (strcmp(type,_opType)==0) { | |
| 3031 return true; | |
| 3032 } else { | |
| 3033 ++position; | |
| 3034 } | |
| 3035 return false; | |
| 3036 } | |
| 3037 | |
| 3038 // Recursive call collecting info on top-level operands, not transitive. | |
| 3039 // Implementation does not modify state of internal structures. | |
| 3040 void MatchNode::append_components(FormDict &locals, ComponentList &components, | |
| 3041 bool deflag) const { | |
| 3042 int usedef = deflag ? Component::DEF : Component::USE; | |
| 3043 FormDict &globals = _AD.globalNames(); | |
| 3044 | |
| 3045 assert (_name != NULL, "MatchNode::build_components encountered empty node\n"); | |
| 3046 // Base case | |
| 3047 if (_lChild==NULL && _rChild==NULL) { | |
| 3048 // If _opType is not an operation, do not build a component for it ##### | |
| 3049 const Form *f = globals[_opType]; | |
| 3050 if( f != NULL ) { | |
| 3051 // Add non-ideals that are operands, operand-classes, | |
| 3052 if( ! f->ideal_only() | |
| 3053 && (f->is_opclass() || f->is_operand()) ) { | |
| 3054 components.insert(_name, _opType, usedef, true); | |
| 3055 } | |
| 3056 } | |
| 3057 return; | |
| 3058 } | |
| 3059 // Promote results of "Set" to DEF | |
| 3060 bool def_flag = (!strcmp(_opType, "Set")) ? true : false; | |
| 3061 if (_lChild) _lChild->append_components(locals, components, def_flag); | |
| 3062 def_flag = false; // only applies to component immediately following 'Set' | |
| 3063 if (_rChild) _rChild->append_components(locals, components, def_flag); | |
| 3064 } | |
| 3065 | |
| 3066 // Find the n'th base-operand in the match node, | |
| 3067 // recursively investigates match rules of user-defined operands. | |
| 3068 // | |
| 3069 // Implementation does not modify state of internal structures since they | |
| 3070 // can be shared. | |
| 3071 bool MatchNode::base_operand(uint &position, FormDict &globals, | |
| 3072 const char * &result, const char * &name, | |
| 3073 const char * &opType) const { | |
| 3074 assert (_name != NULL, "MatchNode::base_operand encountered empty node\n"); | |
| 3075 // Base case | |
| 3076 if (_lChild==NULL && _rChild==NULL) { | |
| 3077 // Check for special case: "Universe", "label" | |
| 3078 if (strcmp(_opType,"Universe") == 0 || strcmp(_opType,"label")==0 ) { | |
| 3079 if (position == 0) { | |
| 3080 result = _result; | |
| 3081 name = _name; | |
| 3082 opType = _opType; | |
| 3083 return 1; | |
| 3084 } else { | |
| 3085 -- position; | |
| 3086 return 0; | |
| 3087 } | |
| 3088 } | |
| 3089 | |
| 3090 const Form *form = globals[_opType]; | |
| 3091 MatchNode *matchNode = NULL; | |
| 3092 // Check for user-defined type | |
| 3093 if (form) { | |
| 3094 // User operand or instruction? | |
| 3095 OperandForm *opForm = form->is_operand(); | |
| 3096 InstructForm *inForm = form->is_instruction(); | |
| 3097 if ( opForm ) { | |
| 3098 matchNode = (MatchNode*)opForm->_matrule; | |
| 3099 } else if ( inForm ) { | |
| 3100 matchNode = (MatchNode*)inForm->_matrule; | |
| 3101 } | |
| 3102 } | |
| 3103 // if this is user-defined, recurse on match rule | |
| 3104 // User-defined operand and instruction forms have a match-rule. | |
| 3105 if (matchNode) { | |
| 3106 return (matchNode->base_operand(position,globals,result,name,opType)); | |
| 3107 } else { | |
| 3108 // Either not a form, or a system-defined form (no match rule). | |
| 3109 if (position==0) { | |
| 3110 result = _result; | |
| 3111 name = _name; | |
| 3112 opType = _opType; | |
| 3113 return 1; | |
| 3114 } else { | |
| 3115 --position; | |
| 3116 return 0; | |
| 3117 } | |
| 3118 } | |
| 3119 | |
| 3120 } else { | |
| 3121 // Examine the left child and right child as well | |
| 3122 if (_lChild) { | |
| 3123 if (_lChild->base_operand(position, globals, result, name, opType)) | |
| 3124 return 1; | |
| 3125 } | |
| 3126 | |
| 3127 if (_rChild) { | |
| 3128 if (_rChild->base_operand(position, globals, result, name, opType)) | |
| 3129 return 1; | |
| 3130 } | |
| 3131 } | |
| 3132 | |
| 3133 return 0; | |
| 3134 } | |
| 3135 | |
| 3136 // Recursive call on all operands' match rules in my match rule. | |
| 3137 uint MatchNode::num_consts(FormDict &globals) const { | |
| 3138 uint index = 0; | |
| 3139 uint num_consts = 0; | |
| 3140 const char *result; | |
| 3141 const char *name; | |
| 3142 const char *opType; | |
| 3143 | |
| 3144 for (uint position = index; | |
| 3145 base_operand(position,globals,result,name,opType); position = index) { | |
| 3146 ++index; | |
| 3147 if( ideal_to_const_type(opType) ) num_consts++; | |
| 3148 } | |
| 3149 | |
| 3150 return num_consts; | |
| 3151 } | |
| 3152 | |
| 3153 // Recursive call on all operands' match rules in my match rule. | |
| 3154 // Constants in match rule subtree with specified type | |
| 3155 uint MatchNode::num_consts(FormDict &globals, Form::DataType type) const { | |
| 3156 uint index = 0; | |
| 3157 uint num_consts = 0; | |
| 3158 const char *result; | |
| 3159 const char *name; | |
| 3160 const char *opType; | |
| 3161 | |
| 3162 for (uint position = index; | |
| 3163 base_operand(position,globals,result,name,opType); position = index) { | |
| 3164 ++index; | |
| 3165 if( ideal_to_const_type(opType) == type ) num_consts++; | |
| 3166 } | |
| 3167 | |
| 3168 return num_consts; | |
| 3169 } | |
| 3170 | |
| 3171 // Recursive call on all operands' match rules in my match rule. | |
| 3172 uint MatchNode::num_const_ptrs(FormDict &globals) const { | |
| 3173 return num_consts( globals, Form::idealP ); | |
| 3174 } | |
| 3175 | |
| 3176 bool MatchNode::sets_result() const { | |
| 3177 return ( (strcmp(_name,"Set") == 0) ? true : false ); | |
| 3178 } | |
| 3179 | |
| 3180 const char *MatchNode::reduce_right(FormDict &globals) const { | |
| 3181 // If there is no right reduction, return NULL. | |
| 3182 const char *rightStr = NULL; | |
| 3183 | |
| 3184 // If we are a "Set", start from the right child. | |
| 3185 const MatchNode *const mnode = sets_result() ? | |
| 3186 (const MatchNode *const)this->_rChild : | |
| 3187 (const MatchNode *const)this; | |
| 3188 | |
| 3189 // If our right child exists, it is the right reduction | |
| 3190 if ( mnode->_rChild ) { | |
| 3191 rightStr = mnode->_rChild->_internalop ? mnode->_rChild->_internalop | |
| 3192 : mnode->_rChild->_opType; | |
| 3193 } | |
| 3194 // Else, May be simple chain rule: (Set dst operand_form), rightStr=NULL; | |
| 3195 return rightStr; | |
| 3196 } | |
| 3197 | |
| 3198 const char *MatchNode::reduce_left(FormDict &globals) const { | |
| 3199 // If there is no left reduction, return NULL. | |
| 3200 const char *leftStr = NULL; | |
| 3201 | |
| 3202 // If we are a "Set", start from the right child. | |
| 3203 const MatchNode *const mnode = sets_result() ? | |
| 3204 (const MatchNode *const)this->_rChild : | |
| 3205 (const MatchNode *const)this; | |
| 3206 | |
| 3207 // If our left child exists, it is the left reduction | |
| 3208 if ( mnode->_lChild ) { | |
| 3209 leftStr = mnode->_lChild->_internalop ? mnode->_lChild->_internalop | |
| 3210 : mnode->_lChild->_opType; | |
| 3211 } else { | |
| 3212 // May be simple chain rule: (Set dst operand_form_source) | |
| 3213 if ( sets_result() ) { | |
| 3214 OperandForm *oper = globals[mnode->_opType]->is_operand(); | |
| 3215 if( oper ) { | |
| 3216 leftStr = mnode->_opType; | |
| 3217 } | |
| 3218 } | |
| 3219 } | |
| 3220 return leftStr; | |
| 3221 } | |
| 3222 | |
| 3223 //------------------------------count_instr_names------------------------------ | |
| 3224 // Count occurrences of operands names in the leaves of the instruction | |
| 3225 // match rule. | |
| 3226 void MatchNode::count_instr_names( Dict &names ) { | |
| 3227 if( !this ) return; | |
| 3228 if( _lChild ) _lChild->count_instr_names(names); | |
| 3229 if( _rChild ) _rChild->count_instr_names(names); | |
| 3230 if( !_lChild && !_rChild ) { | |
| 3231 uintptr_t cnt = (uintptr_t)names[_name]; | |
| 3232 cnt++; // One more name found | |
| 3233 names.Insert(_name,(void*)cnt); | |
| 3234 } | |
| 3235 } | |
| 3236 | |
| 3237 //------------------------------build_instr_pred------------------------------- | |
| 3238 // Build a path to 'name' in buf. Actually only build if cnt is zero, so we | |
| 3239 // can skip some leading instances of 'name'. | |
| 3240 int MatchNode::build_instr_pred( char *buf, const char *name, int cnt ) { | |
| 3241 if( _lChild ) { | |
| 3242 if( !cnt ) strcpy( buf, "_kids[0]->" ); | |
| 3243 cnt = _lChild->build_instr_pred( buf+strlen(buf), name, cnt ); | |
| 3244 if( cnt < 0 ) return cnt; // Found it, all done | |
| 3245 } | |
| 3246 if( _rChild ) { | |
| 3247 if( !cnt ) strcpy( buf, "_kids[1]->" ); | |
| 3248 cnt = _rChild->build_instr_pred( buf+strlen(buf), name, cnt ); | |
| 3249 if( cnt < 0 ) return cnt; // Found it, all done | |
| 3250 } | |
| 3251 if( !_lChild && !_rChild ) { // Found a leaf | |
| 3252 // Wrong name? Give up... | |
| 3253 if( strcmp(name,_name) ) return cnt; | |
| 3254 if( !cnt ) strcpy(buf,"_leaf"); | |
| 3255 return cnt-1; | |
| 3256 } | |
| 3257 return cnt; | |
| 3258 } | |
| 3259 | |
| 3260 | |
| 3261 //------------------------------build_internalop------------------------------- | |
| 3262 // Build string representation of subtree | |
| 3263 void MatchNode::build_internalop( ) { | |
| 3264 char *iop, *subtree; | |
| 3265 const char *lstr, *rstr; | |
| 3266 // Build string representation of subtree | |
| 3267 // Operation lchildType rchildType | |
| 3268 int len = (int)strlen(_opType) + 4; | |
| 3269 lstr = (_lChild) ? ((_lChild->_internalop) ? | |
| 3270 _lChild->_internalop : _lChild->_opType) : ""; | |
| 3271 rstr = (_rChild) ? ((_rChild->_internalop) ? | |
| 3272 _rChild->_internalop : _rChild->_opType) : ""; | |
| 3273 len += (int)strlen(lstr) + (int)strlen(rstr); | |
| 3274 subtree = (char *)malloc(len); | |
| 3275 sprintf(subtree,"_%s_%s_%s", _opType, lstr, rstr); | |
| 3276 // Hash the subtree string in _internalOps; if a name exists, use it | |
| 3277 iop = (char *)_AD._internalOps[subtree]; | |
| 3278 // Else create a unique name, and add it to the hash table | |
| 3279 if (iop == NULL) { | |
| 3280 iop = subtree; | |
| 3281 _AD._internalOps.Insert(subtree, iop); | |
| 3282 _AD._internalOpNames.addName(iop); | |
| 3283 _AD._internalMatch.Insert(iop, this); | |
| 3284 } | |
| 3285 // Add the internal operand name to the MatchNode | |
| 3286 _internalop = iop; | |
| 3287 _result = iop; | |
| 3288 } | |
| 3289 | |
| 3290 | |
| 3291 void MatchNode::dump() { | |
| 3292 output(stderr); | |
| 3293 } | |
| 3294 | |
| 3295 void MatchNode::output(FILE *fp) { | |
| 3296 if (_lChild==0 && _rChild==0) { | |
| 3297 fprintf(fp," %s",_name); // operand | |
| 3298 } | |
| 3299 else { | |
| 3300 fprintf(fp," (%s ",_name); // " (opcodeName " | |
| 3301 if(_lChild) _lChild->output(fp); // left operand | |
| 3302 if(_rChild) _rChild->output(fp); // right operand | |
| 3303 fprintf(fp,")"); // ")" | |
| 3304 } | |
| 3305 } | |
| 3306 | |
| 3307 int MatchNode::needs_ideal_memory_edge(FormDict &globals) const { | |
| 3308 static const char *needs_ideal_memory_list[] = { | |
|
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3309 "StoreI","StoreL","StoreP","StoreN","StoreD","StoreF" , |
| 0 | 3310 "StoreB","StoreC","Store" ,"StoreFP", |
|
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|
3311 "LoadI" ,"LoadL", "LoadP" ,"LoadN", "LoadD" ,"LoadF" , |
| 0 | 3312 "LoadB" ,"LoadC" ,"LoadS" ,"Load" , |
| 3313 "Store4I","Store2I","Store2L","Store2D","Store4F","Store2F","Store16B", | |
| 3314 "Store8B","Store4B","Store8C","Store4C","Store2C", | |
| 3315 "Load4I" ,"Load2I" ,"Load2L" ,"Load2D" ,"Load4F" ,"Load2F" ,"Load16B" , | |
| 3316 "Load8B" ,"Load4B" ,"Load8C" ,"Load4C" ,"Load2C" ,"Load8S", "Load4S","Load2S", | |
|
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|
3317 "LoadRange", "LoadKlass", "LoadNKlass", "LoadL_unaligned", "LoadD_unaligned", |
| 0 | 3318 "LoadPLocked", "LoadLLocked", |
| 3319 "StorePConditional", "StoreLConditional", | |
|
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|
3320 "CompareAndSwapI", "CompareAndSwapL", "CompareAndSwapP", "CompareAndSwapN", |
| 0 | 3321 "StoreCM", |
| 3322 "ClearArray" | |
| 3323 }; | |
| 3324 int cnt = sizeof(needs_ideal_memory_list)/sizeof(char*); | |
| 3325 if( strcmp(_opType,"PrefetchRead")==0 || strcmp(_opType,"PrefetchWrite")==0 ) | |
| 3326 return 1; | |
| 3327 if( _lChild ) { | |
| 3328 const char *opType = _lChild->_opType; | |
| 3329 for( int i=0; i<cnt; i++ ) | |
| 3330 if( strcmp(opType,needs_ideal_memory_list[i]) == 0 ) | |
| 3331 return 1; | |
| 3332 if( _lChild->needs_ideal_memory_edge(globals) ) | |
| 3333 return 1; | |
| 3334 } | |
| 3335 if( _rChild ) { | |
| 3336 const char *opType = _rChild->_opType; | |
| 3337 for( int i=0; i<cnt; i++ ) | |
| 3338 if( strcmp(opType,needs_ideal_memory_list[i]) == 0 ) | |
| 3339 return 1; | |
| 3340 if( _rChild->needs_ideal_memory_edge(globals) ) | |
| 3341 return 1; | |
| 3342 } | |
| 3343 | |
| 3344 return 0; | |
| 3345 } | |
| 3346 | |
| 3347 // TRUE if defines a derived oop, and so needs a base oop edge present | |
| 3348 // post-matching. | |
| 3349 int MatchNode::needs_base_oop_edge() const { | |
| 3350 if( !strcmp(_opType,"AddP") ) return 1; | |
| 3351 if( strcmp(_opType,"Set") ) return 0; | |
| 3352 return !strcmp(_rChild->_opType,"AddP"); | |
| 3353 } | |
| 3354 | |
| 3355 int InstructForm::needs_base_oop_edge(FormDict &globals) const { | |
| 3356 if( is_simple_chain_rule(globals) ) { | |
| 3357 const char *src = _matrule->_rChild->_opType; | |
| 3358 OperandForm *src_op = globals[src]->is_operand(); | |
| 3359 assert( src_op, "Not operand class of chain rule" ); | |
| 3360 return src_op->_matrule ? src_op->_matrule->needs_base_oop_edge() : 0; | |
| 3361 } // Else check instruction | |
| 3362 | |
| 3363 return _matrule ? _matrule->needs_base_oop_edge() : 0; | |
| 3364 } | |
| 3365 | |
| 3366 | |
| 3367 //-------------------------cisc spilling methods------------------------------- | |
| 3368 // helper routines and methods for detecting cisc-spilling instructions | |
| 3369 //-------------------------cisc_spill_merge------------------------------------ | |
| 3370 int MatchNode::cisc_spill_merge(int left_spillable, int right_spillable) { | |
| 3371 int cisc_spillable = Maybe_cisc_spillable; | |
| 3372 | |
| 3373 // Combine results of left and right checks | |
| 3374 if( (left_spillable == Maybe_cisc_spillable) && (right_spillable == Maybe_cisc_spillable) ) { | |
| 3375 // neither side is spillable, nor prevents cisc spilling | |
| 3376 cisc_spillable = Maybe_cisc_spillable; | |
| 3377 } | |
| 3378 else if( (left_spillable == Maybe_cisc_spillable) && (right_spillable > Maybe_cisc_spillable) ) { | |
| 3379 // right side is spillable | |
| 3380 cisc_spillable = right_spillable; | |
| 3381 } | |
| 3382 else if( (right_spillable == Maybe_cisc_spillable) && (left_spillable > Maybe_cisc_spillable) ) { | |
| 3383 // left side is spillable | |
| 3384 cisc_spillable = left_spillable; | |
| 3385 } | |
| 3386 else if( (left_spillable == Not_cisc_spillable) || (right_spillable == Not_cisc_spillable) ) { | |
| 3387 // left or right prevents cisc spilling this instruction | |
| 3388 cisc_spillable = Not_cisc_spillable; | |
| 3389 } | |
| 3390 else { | |
| 3391 // Only allow one to spill | |
| 3392 cisc_spillable = Not_cisc_spillable; | |
| 3393 } | |
| 3394 | |
| 3395 return cisc_spillable; | |
| 3396 } | |
| 3397 | |
| 3398 //-------------------------root_ops_match-------------------------------------- | |
| 3399 bool static root_ops_match(FormDict &globals, const char *op1, const char *op2) { | |
| 3400 // Base Case: check that the current operands/operations match | |
| 3401 assert( op1, "Must have op's name"); | |
| 3402 assert( op2, "Must have op's name"); | |
| 3403 const Form *form1 = globals[op1]; | |
| 3404 const Form *form2 = globals[op2]; | |
| 3405 | |
| 3406 return (form1 == form2); | |
| 3407 } | |
| 3408 | |
| 3409 //-------------------------cisc_spill_match------------------------------------ | |
| 3410 // Recursively check two MatchRules for legal conversion via cisc-spilling | |
| 3411 int MatchNode::cisc_spill_match(FormDict &globals, RegisterForm *registers, MatchNode *mRule2, const char * &operand, const char * ®_type) { | |
| 3412 int cisc_spillable = Maybe_cisc_spillable; | |
| 3413 int left_spillable = Maybe_cisc_spillable; | |
| 3414 int right_spillable = Maybe_cisc_spillable; | |
| 3415 | |
| 3416 // Check that each has same number of operands at this level | |
| 3417 if( (_lChild && !(mRule2->_lChild)) || (_rChild && !(mRule2->_rChild)) ) | |
| 3418 return Not_cisc_spillable; | |
| 3419 | |
| 3420 // Base Case: check that the current operands/operations match | |
| 3421 // or are CISC spillable | |
| 3422 assert( _opType, "Must have _opType"); | |
| 3423 assert( mRule2->_opType, "Must have _opType"); | |
| 3424 const Form *form = globals[_opType]; | |
| 3425 const Form *form2 = globals[mRule2->_opType]; | |
| 3426 if( form == form2 ) { | |
| 3427 cisc_spillable = Maybe_cisc_spillable; | |
| 3428 } else { | |
| 3429 const InstructForm *form2_inst = form2 ? form2->is_instruction() : NULL; | |
| 3430 const char *name_left = mRule2->_lChild ? mRule2->_lChild->_opType : NULL; | |
| 3431 const char *name_right = mRule2->_rChild ? mRule2->_rChild->_opType : NULL; | |
| 3432 // Detect reg vs (loadX memory) | |
| 3433 if( form->is_cisc_reg(globals) | |
| 3434 && form2_inst | |
| 3435 && (is_load_from_memory(mRule2->_opType) != Form::none) // reg vs. (load memory) | |
| 3436 && (name_left != NULL) // NOT (load) | |
| 3437 && (name_right == NULL) ) { // NOT (load memory foo) | |
| 3438 const Form *form2_left = name_left ? globals[name_left] : NULL; | |
| 3439 if( form2_left && form2_left->is_cisc_mem(globals) ) { | |
| 3440 cisc_spillable = Is_cisc_spillable; | |
| 3441 operand = _name; | |
| 3442 reg_type = _result; | |
| 3443 return Is_cisc_spillable; | |
| 3444 } else { | |
| 3445 cisc_spillable = Not_cisc_spillable; | |
| 3446 } | |
| 3447 } | |
| 3448 // Detect reg vs memory | |
| 3449 else if( form->is_cisc_reg(globals) && form2->is_cisc_mem(globals) ) { | |
| 3450 cisc_spillable = Is_cisc_spillable; | |
| 3451 operand = _name; | |
| 3452 reg_type = _result; | |
| 3453 return Is_cisc_spillable; | |
| 3454 } else { | |
| 3455 cisc_spillable = Not_cisc_spillable; | |
| 3456 } | |
| 3457 } | |
| 3458 | |
| 3459 // If cisc is still possible, check rest of tree | |
| 3460 if( cisc_spillable == Maybe_cisc_spillable ) { | |
| 3461 // Check that each has same number of operands at this level | |
| 3462 if( (_lChild && !(mRule2->_lChild)) || (_rChild && !(mRule2->_rChild)) ) return Not_cisc_spillable; | |
| 3463 | |
| 3464 // Check left operands | |
| 3465 if( (_lChild == NULL) && (mRule2->_lChild == NULL) ) { | |
| 3466 left_spillable = Maybe_cisc_spillable; | |
| 3467 } else { | |
| 3468 left_spillable = _lChild->cisc_spill_match(globals, registers, mRule2->_lChild, operand, reg_type); | |
| 3469 } | |
| 3470 | |
| 3471 // Check right operands | |
| 3472 if( (_rChild == NULL) && (mRule2->_rChild == NULL) ) { | |
| 3473 right_spillable = Maybe_cisc_spillable; | |
| 3474 } else { | |
| 3475 right_spillable = _rChild->cisc_spill_match(globals, registers, mRule2->_rChild, operand, reg_type); | |
| 3476 } | |
| 3477 | |
| 3478 // Combine results of left and right checks | |
| 3479 cisc_spillable = cisc_spill_merge(left_spillable, right_spillable); | |
| 3480 } | |
| 3481 | |
| 3482 return cisc_spillable; | |
| 3483 } | |
| 3484 | |
| 3485 //---------------------------cisc_spill_match---------------------------------- | |
| 3486 // Recursively check two MatchRules for legal conversion via cisc-spilling | |
| 3487 // This method handles the root of Match tree, | |
| 3488 // general recursive checks done in MatchNode | |
| 3489 int MatchRule::cisc_spill_match(FormDict &globals, RegisterForm *registers, | |
| 3490 MatchRule *mRule2, const char * &operand, | |
| 3491 const char * ®_type) { | |
| 3492 int cisc_spillable = Maybe_cisc_spillable; | |
| 3493 int left_spillable = Maybe_cisc_spillable; | |
| 3494 int right_spillable = Maybe_cisc_spillable; | |
| 3495 | |
| 3496 // Check that each sets a result | |
| 3497 if( !(sets_result() && mRule2->sets_result()) ) return Not_cisc_spillable; | |
| 3498 // Check that each has same number of operands at this level | |
| 3499 if( (_lChild && !(mRule2->_lChild)) || (_rChild && !(mRule2->_rChild)) ) return Not_cisc_spillable; | |
| 3500 | |
| 3501 // Check left operands: at root, must be target of 'Set' | |
| 3502 if( (_lChild == NULL) || (mRule2->_lChild == NULL) ) { | |
| 3503 left_spillable = Not_cisc_spillable; | |
| 3504 } else { | |
| 3505 // Do not support cisc-spilling instruction's target location | |
| 3506 if( root_ops_match(globals, _lChild->_opType, mRule2->_lChild->_opType) ) { | |
| 3507 left_spillable = Maybe_cisc_spillable; | |
| 3508 } else { | |
| 3509 left_spillable = Not_cisc_spillable; | |
| 3510 } | |
| 3511 } | |
| 3512 | |
| 3513 // Check right operands: recursive walk to identify reg->mem operand | |
| 3514 if( (_rChild == NULL) && (mRule2->_rChild == NULL) ) { | |
| 3515 right_spillable = Maybe_cisc_spillable; | |
| 3516 } else { | |
| 3517 right_spillable = _rChild->cisc_spill_match(globals, registers, mRule2->_rChild, operand, reg_type); | |
| 3518 } | |
| 3519 | |
| 3520 // Combine results of left and right checks | |
| 3521 cisc_spillable = cisc_spill_merge(left_spillable, right_spillable); | |
| 3522 | |
| 3523 return cisc_spillable; | |
| 3524 } | |
| 3525 | |
| 3526 //----------------------------- equivalent ------------------------------------ | |
| 3527 // Recursively check to see if two match rules are equivalent. | |
| 3528 // This rule handles the root. | |
| 3529 bool MatchRule::equivalent(FormDict &globals, MatchRule *mRule2) { | |
| 3530 // Check that each sets a result | |
| 3531 if (sets_result() != mRule2->sets_result()) { | |
| 3532 return false; | |
| 3533 } | |
| 3534 | |
| 3535 // Check that the current operands/operations match | |
| 3536 assert( _opType, "Must have _opType"); | |
| 3537 assert( mRule2->_opType, "Must have _opType"); | |
| 3538 const Form *form = globals[_opType]; | |
| 3539 const Form *form2 = globals[mRule2->_opType]; | |
| 3540 if( form != form2 ) { | |
| 3541 return false; | |
| 3542 } | |
| 3543 | |
| 3544 if (_lChild ) { | |
| 3545 if( !_lChild->equivalent(globals, mRule2->_lChild) ) | |
| 3546 return false; | |
| 3547 } else if (mRule2->_lChild) { | |
| 3548 return false; // I have NULL left child, mRule2 has non-NULL left child. | |
| 3549 } | |
| 3550 | |
| 3551 if (_rChild ) { | |
| 3552 if( !_rChild->equivalent(globals, mRule2->_rChild) ) | |
| 3553 return false; | |
| 3554 } else if (mRule2->_rChild) { | |
| 3555 return false; // I have NULL right child, mRule2 has non-NULL right child. | |
| 3556 } | |
| 3557 | |
| 3558 // We've made it through the gauntlet. | |
| 3559 return true; | |
| 3560 } | |
| 3561 | |
| 3562 //----------------------------- equivalent ------------------------------------ | |
| 3563 // Recursively check to see if two match rules are equivalent. | |
| 3564 // This rule handles the operands. | |
| 3565 bool MatchNode::equivalent(FormDict &globals, MatchNode *mNode2) { | |
| 3566 if( !mNode2 ) | |
| 3567 return false; | |
| 3568 | |
| 3569 // Check that the current operands/operations match | |
| 3570 assert( _opType, "Must have _opType"); | |
| 3571 assert( mNode2->_opType, "Must have _opType"); | |
| 3572 const Form *form = globals[_opType]; | |
| 3573 const Form *form2 = globals[mNode2->_opType]; | |
| 3574 return (form == form2); | |
| 3575 } | |
| 3576 | |
| 3577 //-------------------------- has_commutative_op ------------------------------- | |
| 3578 // Recursively check for commutative operations with subtree operands | |
| 3579 // which could be swapped. | |
| 3580 void MatchNode::count_commutative_op(int& count) { | |
| 3581 static const char *commut_op_list[] = { | |
| 3582 "AddI","AddL","AddF","AddD", | |
| 3583 "AndI","AndL", | |
| 3584 "MaxI","MinI", | |
| 3585 "MulI","MulL","MulF","MulD", | |
| 3586 "OrI" ,"OrL" , | |
| 3587 "XorI","XorL" | |
| 3588 }; | |
| 3589 int cnt = sizeof(commut_op_list)/sizeof(char*); | |
| 3590 | |
| 3591 if( _lChild && _rChild && (_lChild->_lChild || _rChild->_lChild) ) { | |
| 3592 // Don't swap if right operand is an immediate constant. | |
| 3593 bool is_const = false; | |
| 3594 if( _rChild->_lChild == NULL && _rChild->_rChild == NULL ) { | |
| 3595 FormDict &globals = _AD.globalNames(); | |
| 3596 const Form *form = globals[_rChild->_opType]; | |
| 3597 if ( form ) { | |
| 3598 OperandForm *oper = form->is_operand(); | |
| 3599 if( oper && oper->interface_type(globals) == Form::constant_interface ) | |
| 3600 is_const = true; | |
| 3601 } | |
| 3602 } | |
| 3603 if( !is_const ) { | |
| 3604 for( int i=0; i<cnt; i++ ) { | |
| 3605 if( strcmp(_opType, commut_op_list[i]) == 0 ) { | |
| 3606 count++; | |
| 3607 _commutative_id = count; // id should be > 0 | |
| 3608 break; | |
| 3609 } | |
| 3610 } | |
| 3611 } | |
| 3612 } | |
| 3613 if( _lChild ) | |
| 3614 _lChild->count_commutative_op(count); | |
| 3615 if( _rChild ) | |
| 3616 _rChild->count_commutative_op(count); | |
| 3617 } | |
| 3618 | |
| 3619 //-------------------------- swap_commutative_op ------------------------------ | |
| 3620 // Recursively swap specified commutative operation with subtree operands. | |
| 3621 void MatchNode::swap_commutative_op(bool atroot, int id) { | |
| 3622 if( _commutative_id == id ) { // id should be > 0 | |
| 3623 assert(_lChild && _rChild && (_lChild->_lChild || _rChild->_lChild ), | |
| 3624 "not swappable operation"); | |
| 3625 MatchNode* tmp = _lChild; | |
| 3626 _lChild = _rChild; | |
| 3627 _rChild = tmp; | |
| 3628 // Don't exit here since we need to build internalop. | |
| 3629 } | |
| 3630 | |
| 3631 bool is_set = ( strcmp(_opType, "Set") == 0 ); | |
| 3632 if( _lChild ) | |
| 3633 _lChild->swap_commutative_op(is_set, id); | |
| 3634 if( _rChild ) | |
| 3635 _rChild->swap_commutative_op(is_set, id); | |
| 3636 | |
| 3637 // If not the root, reduce this subtree to an internal operand | |
| 3638 if( !atroot && (_lChild || _rChild) ) { | |
| 3639 build_internalop(); | |
| 3640 } | |
| 3641 } | |
| 3642 | |
| 3643 //-------------------------- swap_commutative_op ------------------------------ | |
| 3644 // Recursively swap specified commutative operation with subtree operands. | |
| 3645 void MatchRule::swap_commutative_op(const char* instr_ident, int count, int& match_rules_cnt) { | |
| 3646 assert(match_rules_cnt < 100," too many match rule clones"); | |
| 3647 // Clone | |
| 3648 MatchRule* clone = new MatchRule(_AD, this); | |
| 3649 // Swap operands of commutative operation | |
| 3650 ((MatchNode*)clone)->swap_commutative_op(true, count); | |
| 3651 char* buf = (char*) malloc(strlen(instr_ident) + 4); | |
| 3652 sprintf(buf, "%s_%d", instr_ident, match_rules_cnt++); | |
| 3653 clone->_result = buf; | |
| 3654 | |
| 3655 clone->_next = this->_next; | |
| 3656 this-> _next = clone; | |
| 3657 if( (--count) > 0 ) { | |
| 3658 this-> swap_commutative_op(instr_ident, count, match_rules_cnt); | |
| 3659 clone->swap_commutative_op(instr_ident, count, match_rules_cnt); | |
| 3660 } | |
| 3661 } | |
| 3662 | |
| 3663 //------------------------------MatchRule-------------------------------------- | |
| 3664 MatchRule::MatchRule(ArchDesc &ad) | |
| 3665 : MatchNode(ad), _depth(0), _construct(NULL), _numchilds(0) { | |
| 3666 _next = NULL; | |
| 3667 } | |
| 3668 | |
| 3669 MatchRule::MatchRule(ArchDesc &ad, MatchRule* mRule) | |
| 3670 : MatchNode(ad, *mRule, 0), _depth(mRule->_depth), | |
| 3671 _construct(mRule->_construct), _numchilds(mRule->_numchilds) { | |
| 3672 _next = NULL; | |
| 3673 } | |
| 3674 | |
| 3675 MatchRule::MatchRule(ArchDesc &ad, MatchNode* mroot, int depth, char *cnstr, | |
| 3676 int numleaves) | |
| 3677 : MatchNode(ad,*mroot), _depth(depth), _construct(cnstr), | |
| 3678 _numchilds(0) { | |
| 3679 _next = NULL; | |
| 3680 mroot->_lChild = NULL; | |
| 3681 mroot->_rChild = NULL; | |
| 3682 delete mroot; | |
| 3683 _numleaves = numleaves; | |
| 3684 _numchilds = (_lChild ? 1 : 0) + (_rChild ? 1 : 0); | |
| 3685 } | |
| 3686 MatchRule::~MatchRule() { | |
| 3687 } | |
| 3688 | |
| 3689 // Recursive call collecting info on top-level operands, not transitive. | |
| 3690 // Implementation does not modify state of internal structures. | |
| 3691 void MatchRule::append_components(FormDict &locals, ComponentList &components) const { | |
| 3692 assert (_name != NULL, "MatchNode::build_components encountered empty node\n"); | |
| 3693 | |
| 3694 MatchNode::append_components(locals, components, | |
| 3695 false /* not necessarily a def */); | |
| 3696 } | |
| 3697 | |
| 3698 // Recursive call on all operands' match rules in my match rule. | |
| 3699 // Implementation does not modify state of internal structures since they | |
| 3700 // can be shared. | |
| 3701 // The MatchNode that is called first treats its | |
| 3702 bool MatchRule::base_operand(uint &position0, FormDict &globals, | |
| 3703 const char *&result, const char * &name, | |
| 3704 const char * &opType)const{ | |
| 3705 uint position = position0; | |
| 3706 | |
| 3707 return (MatchNode::base_operand( position, globals, result, name, opType)); | |
| 3708 } | |
| 3709 | |
| 3710 | |
| 3711 bool MatchRule::is_base_register(FormDict &globals) const { | |
| 3712 uint position = 1; | |
| 3713 const char *result = NULL; | |
| 3714 const char *name = NULL; | |
| 3715 const char *opType = NULL; | |
| 3716 if (!base_operand(position, globals, result, name, opType)) { | |
| 3717 position = 0; | |
| 3718 if( base_operand(position, globals, result, name, opType) && | |
| 3719 (strcmp(opType,"RegI")==0 || | |
| 3720 strcmp(opType,"RegP")==0 || | |
|
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|
3721 strcmp(opType,"RegN")==0 || |
| 0 | 3722 strcmp(opType,"RegL")==0 || |
| 3723 strcmp(opType,"RegF")==0 || | |
| 3724 strcmp(opType,"RegD")==0 || | |
| 3725 strcmp(opType,"Reg" )==0) ) { | |
| 3726 return 1; | |
| 3727 } | |
| 3728 } | |
| 3729 return 0; | |
| 3730 } | |
| 3731 | |
| 3732 Form::DataType MatchRule::is_base_constant(FormDict &globals) const { | |
| 3733 uint position = 1; | |
| 3734 const char *result = NULL; | |
| 3735 const char *name = NULL; | |
| 3736 const char *opType = NULL; | |
| 3737 if (!base_operand(position, globals, result, name, opType)) { | |
| 3738 position = 0; | |
| 3739 if (base_operand(position, globals, result, name, opType)) { | |
| 3740 return ideal_to_const_type(opType); | |
| 3741 } | |
| 3742 } | |
| 3743 return Form::none; | |
| 3744 } | |
| 3745 | |
| 3746 bool MatchRule::is_chain_rule(FormDict &globals) const { | |
| 3747 | |
| 3748 // Check for chain rule, and do not generate a match list for it | |
| 3749 if ((_lChild == NULL) && (_rChild == NULL) ) { | |
| 3750 const Form *form = globals[_opType]; | |
| 3751 // If this is ideal, then it is a base match, not a chain rule. | |
| 3752 if ( form && form->is_operand() && (!form->ideal_only())) { | |
| 3753 return true; | |
| 3754 } | |
| 3755 } | |
| 3756 // Check for "Set" form of chain rule, and do not generate a match list | |
| 3757 if (_rChild) { | |
| 3758 const char *rch = _rChild->_opType; | |
| 3759 const Form *form = globals[rch]; | |
| 3760 if ((!strcmp(_opType,"Set") && | |
| 3761 ((form) && form->is_operand()))) { | |
| 3762 return true; | |
| 3763 } | |
| 3764 } | |
| 3765 return false; | |
| 3766 } | |
| 3767 | |
| 3768 int MatchRule::is_ideal_copy() const { | |
| 3769 if( _rChild ) { | |
| 3770 const char *opType = _rChild->_opType; | |
| 3771 if( strcmp(opType,"CastII")==0 ) | |
| 3772 return 1; | |
| 3773 // Do not treat *CastPP this way, because it | |
| 3774 // may transfer a raw pointer to an oop. | |
| 3775 // If the register allocator were to coalesce this | |
| 3776 // into a single LRG, the GC maps would be incorrect. | |
| 3777 //if( strcmp(opType,"CastPP")==0 ) | |
| 3778 // return 1; | |
| 3779 //if( strcmp(opType,"CheckCastPP")==0 ) | |
| 3780 // return 1; | |
| 3781 // | |
| 3782 // Do not treat CastX2P or CastP2X this way, because | |
| 3783 // raw pointers and int types are treated differently | |
| 3784 // when saving local & stack info for safepoints in | |
| 3785 // Output(). | |
| 3786 //if( strcmp(opType,"CastX2P")==0 ) | |
| 3787 // return 1; | |
| 3788 //if( strcmp(opType,"CastP2X")==0 ) | |
| 3789 // return 1; | |
| 3790 } | |
| 3791 if( is_chain_rule(_AD.globalNames()) && | |
| 3792 _lChild && strncmp(_lChild->_opType,"stackSlot",9)==0 ) | |
| 3793 return 1; | |
| 3794 return 0; | |
| 3795 } | |
| 3796 | |
| 3797 | |
| 3798 int MatchRule::is_expensive() const { | |
| 3799 if( _rChild ) { | |
| 3800 const char *opType = _rChild->_opType; | |
| 3801 if( strcmp(opType,"AtanD")==0 || | |
| 3802 strcmp(opType,"CosD")==0 || | |
| 3803 strcmp(opType,"DivD")==0 || | |
| 3804 strcmp(opType,"DivF")==0 || | |
| 3805 strcmp(opType,"DivI")==0 || | |
| 3806 strcmp(opType,"ExpD")==0 || | |
| 3807 strcmp(opType,"LogD")==0 || | |
| 3808 strcmp(opType,"Log10D")==0 || | |
| 3809 strcmp(opType,"ModD")==0 || | |
| 3810 strcmp(opType,"ModF")==0 || | |
| 3811 strcmp(opType,"ModI")==0 || | |
| 3812 strcmp(opType,"PowD")==0 || | |
| 3813 strcmp(opType,"SinD")==0 || | |
| 3814 strcmp(opType,"SqrtD")==0 || | |
| 3815 strcmp(opType,"TanD")==0 || | |
| 3816 strcmp(opType,"ConvD2F")==0 || | |
| 3817 strcmp(opType,"ConvD2I")==0 || | |
| 3818 strcmp(opType,"ConvD2L")==0 || | |
| 3819 strcmp(opType,"ConvF2D")==0 || | |
| 3820 strcmp(opType,"ConvF2I")==0 || | |
| 3821 strcmp(opType,"ConvF2L")==0 || | |
| 3822 strcmp(opType,"ConvI2D")==0 || | |
| 3823 strcmp(opType,"ConvI2F")==0 || | |
| 3824 strcmp(opType,"ConvI2L")==0 || | |
| 3825 strcmp(opType,"ConvL2D")==0 || | |
| 3826 strcmp(opType,"ConvL2F")==0 || | |
| 3827 strcmp(opType,"ConvL2I")==0 || | |
| 3828 strcmp(opType,"RoundDouble")==0 || | |
| 3829 strcmp(opType,"RoundFloat")==0 || | |
| 3830 strcmp(opType,"ReverseBytesI")==0 || | |
| 3831 strcmp(opType,"ReverseBytesL")==0 || | |
| 3832 strcmp(opType,"Replicate16B")==0 || | |
| 3833 strcmp(opType,"Replicate8B")==0 || | |
| 3834 strcmp(opType,"Replicate4B")==0 || | |
| 3835 strcmp(opType,"Replicate8C")==0 || | |
| 3836 strcmp(opType,"Replicate4C")==0 || | |
| 3837 strcmp(opType,"Replicate8S")==0 || | |
| 3838 strcmp(opType,"Replicate4S")==0 || | |
| 3839 strcmp(opType,"Replicate4I")==0 || | |
| 3840 strcmp(opType,"Replicate2I")==0 || | |
| 3841 strcmp(opType,"Replicate2L")==0 || | |
| 3842 strcmp(opType,"Replicate4F")==0 || | |
| 3843 strcmp(opType,"Replicate2F")==0 || | |
| 3844 strcmp(opType,"Replicate2D")==0 || | |
| 3845 0 /* 0 to line up columns nicely */ ) | |
| 3846 return 1; | |
| 3847 } | |
| 3848 return 0; | |
| 3849 } | |
| 3850 | |
| 3851 bool MatchRule::is_ideal_unlock() const { | |
| 3852 if( !_opType ) return false; | |
| 3853 return !strcmp(_opType,"Unlock") || !strcmp(_opType,"FastUnlock"); | |
| 3854 } | |
| 3855 | |
| 3856 | |
| 3857 bool MatchRule::is_ideal_call_leaf() const { | |
| 3858 if( !_opType ) return false; | |
| 3859 return !strcmp(_opType,"CallLeaf") || | |
| 3860 !strcmp(_opType,"CallLeafNoFP"); | |
| 3861 } | |
| 3862 | |
| 3863 | |
| 3864 bool MatchRule::is_ideal_if() const { | |
| 3865 if( !_opType ) return false; | |
| 3866 return | |
| 3867 !strcmp(_opType,"If" ) || | |
| 3868 !strcmp(_opType,"CountedLoopEnd"); | |
| 3869 } | |
| 3870 | |
| 3871 bool MatchRule::is_ideal_fastlock() const { | |
| 3872 if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) { | |
| 3873 return (strcmp(_rChild->_opType,"FastLock") == 0); | |
| 3874 } | |
| 3875 return false; | |
| 3876 } | |
| 3877 | |
| 3878 bool MatchRule::is_ideal_membar() const { | |
| 3879 if( !_opType ) return false; | |
| 3880 return | |
| 3881 !strcmp(_opType,"MemBarAcquire" ) || | |
| 3882 !strcmp(_opType,"MemBarRelease" ) || | |
| 3883 !strcmp(_opType,"MemBarVolatile" ) || | |
| 3884 !strcmp(_opType,"MemBarCPUOrder" ) ; | |
| 3885 } | |
| 3886 | |
| 3887 bool MatchRule::is_ideal_loadPC() const { | |
| 3888 if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) { | |
| 3889 return (strcmp(_rChild->_opType,"LoadPC") == 0); | |
| 3890 } | |
| 3891 return false; | |
| 3892 } | |
| 3893 | |
| 3894 bool MatchRule::is_ideal_box() const { | |
| 3895 if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) { | |
| 3896 return (strcmp(_rChild->_opType,"Box") == 0); | |
| 3897 } | |
| 3898 return false; | |
| 3899 } | |
| 3900 | |
| 3901 bool MatchRule::is_ideal_goto() const { | |
| 3902 bool ideal_goto = false; | |
| 3903 | |
| 3904 if( _opType && (strcmp(_opType,"Goto") == 0) ) { | |
| 3905 ideal_goto = true; | |
| 3906 } | |
| 3907 return ideal_goto; | |
| 3908 } | |
| 3909 | |
| 3910 bool MatchRule::is_ideal_jump() const { | |
| 3911 if( _opType ) { | |
| 3912 if( !strcmp(_opType,"Jump") ) | |
| 3913 return true; | |
| 3914 } | |
| 3915 return false; | |
| 3916 } | |
| 3917 | |
| 3918 bool MatchRule::is_ideal_bool() const { | |
| 3919 if( _opType ) { | |
| 3920 if( !strcmp(_opType,"Bool") ) | |
| 3921 return true; | |
| 3922 } | |
| 3923 return false; | |
| 3924 } | |
| 3925 | |
| 3926 | |
| 3927 Form::DataType MatchRule::is_ideal_load() const { | |
| 3928 Form::DataType ideal_load = Form::none; | |
| 3929 | |
| 3930 if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) { | |
| 3931 const char *opType = _rChild->_opType; | |
| 3932 ideal_load = is_load_from_memory(opType); | |
| 3933 } | |
| 3934 | |
| 3935 return ideal_load; | |
| 3936 } | |
| 3937 | |
| 3938 | |
| 3939 Form::DataType MatchRule::is_ideal_store() const { | |
| 3940 Form::DataType ideal_store = Form::none; | |
| 3941 | |
| 3942 if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) { | |
| 3943 const char *opType = _rChild->_opType; | |
| 3944 ideal_store = is_store_to_memory(opType); | |
| 3945 } | |
| 3946 | |
| 3947 return ideal_store; | |
| 3948 } | |
| 3949 | |
| 3950 | |
| 3951 void MatchRule::dump() { | |
| 3952 output(stderr); | |
| 3953 } | |
| 3954 | |
| 3955 void MatchRule::output(FILE *fp) { | |
| 3956 fprintf(fp,"MatchRule: ( %s",_name); | |
| 3957 if (_lChild) _lChild->output(fp); | |
| 3958 if (_rChild) _rChild->output(fp); | |
| 3959 fprintf(fp," )\n"); | |
| 3960 fprintf(fp," nesting depth = %d\n", _depth); | |
| 3961 if (_result) fprintf(fp," Result Type = %s", _result); | |
| 3962 fprintf(fp,"\n"); | |
| 3963 } | |
| 3964 | |
| 3965 //------------------------------Attribute-------------------------------------- | |
| 3966 Attribute::Attribute(char *id, char* val, int type) | |
| 3967 : _ident(id), _val(val), _atype(type) { | |
| 3968 } | |
| 3969 Attribute::~Attribute() { | |
| 3970 } | |
| 3971 | |
| 3972 int Attribute::int_val(ArchDesc &ad) { | |
| 3973 // Make sure it is an integer constant: | |
| 3974 int result = 0; | |
| 3975 if (!_val || !ADLParser::is_int_token(_val, result)) { | |
| 3976 ad.syntax_err(0, "Attribute %s must have an integer value: %s", | |
| 3977 _ident, _val ? _val : ""); | |
| 3978 } | |
| 3979 return result; | |
| 3980 } | |
| 3981 | |
| 3982 void Attribute::dump() { | |
| 3983 output(stderr); | |
| 3984 } // Debug printer | |
| 3985 | |
| 3986 // Write to output files | |
| 3987 void Attribute::output(FILE *fp) { | |
| 3988 fprintf(fp,"Attribute: %s %s\n", (_ident?_ident:""), (_val?_val:"")); | |
| 3989 } | |
| 3990 | |
| 3991 //------------------------------FormatRule---------------------------------- | |
| 3992 FormatRule::FormatRule(char *temp) | |
| 3993 : _temp(temp) { | |
| 3994 } | |
| 3995 FormatRule::~FormatRule() { | |
| 3996 } | |
| 3997 | |
| 3998 void FormatRule::dump() { | |
| 3999 output(stderr); | |
| 4000 } | |
| 4001 | |
| 4002 // Write to output files | |
| 4003 void FormatRule::output(FILE *fp) { | |
| 4004 fprintf(fp,"\nFormat Rule: \n%s", (_temp?_temp:"")); | |
| 4005 fprintf(fp,"\n"); | |
| 4006 } |