Mercurial > hg > truffle
annotate src/share/vm/adlc/formssel.cpp @ 4763:1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
Summary: adds store store barrier after initialization of header and body of objects.
Reviewed-by: never, kvn
| author | roland |
|---|---|
| date | Tue, 20 Dec 2011 16:56:50 +0100 |
| parents | f03a3c8bd5e5 |
| children | 8b0a4867acf0 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 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), | |
| 2008 | 33 _effects(cmpstr, hashstr, Form::arena), |
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34 _is_mach_constant(false), |
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35 _has_call(false) |
| 2008 | 36 { |
| 0 | 37 _ftype = Form::INS; |
| 38 | |
| 39 _matrule = NULL; | |
| 40 _insencode = NULL; | |
| 2008 | 41 _constant = NULL; |
| 0 | 42 _opcode = NULL; |
| 43 _size = NULL; | |
| 44 _attribs = NULL; | |
| 45 _predicate = NULL; | |
| 46 _exprule = NULL; | |
| 47 _rewrule = NULL; | |
| 48 _format = NULL; | |
| 49 _peephole = NULL; | |
| 50 _ins_pipe = NULL; | |
| 51 _uniq_idx = NULL; | |
| 52 _num_uniq = 0; | |
| 53 _cisc_spill_operand = Not_cisc_spillable;// Which operand may cisc-spill | |
| 54 _cisc_spill_alternate = NULL; // possible cisc replacement | |
| 55 _cisc_reg_mask_name = NULL; | |
| 56 _is_cisc_alternate = false; | |
| 57 _is_short_branch = false; | |
| 58 _short_branch_form = NULL; | |
| 59 _alignment = 1; | |
| 60 } | |
| 61 | |
| 62 InstructForm::InstructForm(const char *id, InstructForm *instr, MatchRule *rule) | |
| 63 : _ident(id), _ideal_only(false), | |
| 64 _localNames(instr->_localNames), | |
| 2008 | 65 _effects(instr->_effects), |
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66 _is_mach_constant(false), |
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67 _has_call(false) |
| 2008 | 68 { |
| 0 | 69 _ftype = Form::INS; |
| 70 | |
| 71 _matrule = rule; | |
| 72 _insencode = instr->_insencode; | |
| 2008 | 73 _constant = instr->_constant; |
| 0 | 74 _opcode = instr->_opcode; |
| 75 _size = instr->_size; | |
| 76 _attribs = instr->_attribs; | |
| 77 _predicate = instr->_predicate; | |
| 78 _exprule = instr->_exprule; | |
| 79 _rewrule = instr->_rewrule; | |
| 80 _format = instr->_format; | |
| 81 _peephole = instr->_peephole; | |
| 82 _ins_pipe = instr->_ins_pipe; | |
| 83 _uniq_idx = instr->_uniq_idx; | |
| 84 _num_uniq = instr->_num_uniq; | |
| 85 _cisc_spill_operand = Not_cisc_spillable;// Which operand may cisc-spill | |
| 86 _cisc_spill_alternate = NULL; // possible cisc replacement | |
| 87 _cisc_reg_mask_name = NULL; | |
| 88 _is_cisc_alternate = false; | |
| 89 _is_short_branch = false; | |
| 90 _short_branch_form = NULL; | |
| 91 _alignment = 1; | |
| 92 // Copy parameters | |
| 93 const char *name; | |
| 94 instr->_parameters.reset(); | |
| 95 for (; (name = instr->_parameters.iter()) != NULL;) | |
| 96 _parameters.addName(name); | |
| 97 } | |
| 98 | |
| 99 InstructForm::~InstructForm() { | |
| 100 } | |
| 101 | |
| 102 InstructForm *InstructForm::is_instruction() const { | |
| 103 return (InstructForm*)this; | |
| 104 } | |
| 105 | |
| 106 bool InstructForm::ideal_only() const { | |
| 107 return _ideal_only; | |
| 108 } | |
| 109 | |
| 110 bool InstructForm::sets_result() const { | |
| 111 return (_matrule != NULL && _matrule->sets_result()); | |
| 112 } | |
| 113 | |
| 114 bool InstructForm::needs_projections() { | |
| 115 _components.reset(); | |
| 116 for( Component *comp; (comp = _components.iter()) != NULL; ) { | |
| 117 if (comp->isa(Component::KILL)) { | |
| 118 return true; | |
| 119 } | |
| 120 } | |
| 121 return false; | |
| 122 } | |
| 123 | |
| 124 | |
| 125 bool InstructForm::has_temps() { | |
| 126 if (_matrule) { | |
| 127 // Examine each component to see if it is a TEMP | |
| 128 _components.reset(); | |
| 129 // Skip the first component, if already handled as (SET dst (...)) | |
| 130 Component *comp = NULL; | |
| 131 if (sets_result()) comp = _components.iter(); | |
| 132 while ((comp = _components.iter()) != NULL) { | |
| 133 if (comp->isa(Component::TEMP)) { | |
| 134 return true; | |
| 135 } | |
| 136 } | |
| 137 } | |
| 138 | |
| 139 return false; | |
| 140 } | |
| 141 | |
| 142 uint InstructForm::num_defs_or_kills() { | |
| 143 uint defs_or_kills = 0; | |
| 144 | |
| 145 _components.reset(); | |
| 146 for( Component *comp; (comp = _components.iter()) != NULL; ) { | |
| 147 if( comp->isa(Component::DEF) || comp->isa(Component::KILL) ) { | |
| 148 ++defs_or_kills; | |
| 149 } | |
| 150 } | |
| 151 | |
| 152 return defs_or_kills; | |
| 153 } | |
| 154 | |
| 155 // This instruction has an expand rule? | |
| 156 bool InstructForm::expands() const { | |
| 157 return ( _exprule != NULL ); | |
| 158 } | |
| 159 | |
| 160 // This instruction has a peephole rule? | |
| 161 Peephole *InstructForm::peepholes() const { | |
| 162 return _peephole; | |
| 163 } | |
| 164 | |
| 165 // This instruction has a peephole rule? | |
| 166 void InstructForm::append_peephole(Peephole *peephole) { | |
| 167 if( _peephole == NULL ) { | |
| 168 _peephole = peephole; | |
| 169 } else { | |
| 170 _peephole->append_peephole(peephole); | |
| 171 } | |
| 172 } | |
| 173 | |
| 174 | |
| 175 // ideal opcode enumeration | |
| 176 const char *InstructForm::ideal_Opcode( FormDict &globalNames ) const { | |
| 177 if( !_matrule ) return "Node"; // Something weird | |
| 178 // Chain rules do not really have ideal Opcodes; use their source | |
| 179 // operand ideal Opcode instead. | |
| 180 if( is_simple_chain_rule(globalNames) ) { | |
| 181 const char *src = _matrule->_rChild->_opType; | |
| 182 OperandForm *src_op = globalNames[src]->is_operand(); | |
| 183 assert( src_op, "Not operand class of chain rule" ); | |
| 184 if( !src_op->_matrule ) return "Node"; | |
| 185 return src_op->_matrule->_opType; | |
| 186 } | |
| 187 // Operand chain rules do not really have ideal Opcodes | |
| 188 if( _matrule->is_chain_rule(globalNames) ) | |
| 189 return "Node"; | |
| 190 return strcmp(_matrule->_opType,"Set") | |
| 191 ? _matrule->_opType | |
| 192 : _matrule->_rChild->_opType; | |
| 193 } | |
| 194 | |
| 195 // Recursive check on all operands' match rules in my match rule | |
| 196 bool InstructForm::is_pinned(FormDict &globals) { | |
| 197 if ( ! _matrule) return false; | |
| 198 | |
| 199 int index = 0; | |
| 200 if (_matrule->find_type("Goto", index)) return true; | |
| 201 if (_matrule->find_type("If", index)) return true; | |
| 202 if (_matrule->find_type("CountedLoopEnd",index)) return true; | |
| 203 if (_matrule->find_type("Return", index)) return true; | |
| 204 if (_matrule->find_type("Rethrow", index)) return true; | |
| 205 if (_matrule->find_type("TailCall", index)) return true; | |
| 206 if (_matrule->find_type("TailJump", index)) return true; | |
| 207 if (_matrule->find_type("Halt", index)) return true; | |
| 208 if (_matrule->find_type("Jump", index)) return true; | |
| 209 | |
| 210 return is_parm(globals); | |
| 211 } | |
| 212 | |
| 213 // Recursive check on all operands' match rules in my match rule | |
| 214 bool InstructForm::is_projection(FormDict &globals) { | |
| 215 if ( ! _matrule) return false; | |
| 216 | |
| 217 int index = 0; | |
| 218 if (_matrule->find_type("Goto", index)) return true; | |
| 219 if (_matrule->find_type("Return", index)) return true; | |
| 220 if (_matrule->find_type("Rethrow", index)) return true; | |
| 221 if (_matrule->find_type("TailCall",index)) return true; | |
| 222 if (_matrule->find_type("TailJump",index)) return true; | |
| 223 if (_matrule->find_type("Halt", index)) return true; | |
| 224 | |
| 225 return false; | |
| 226 } | |
| 227 | |
| 228 // Recursive check on all operands' match rules in my match rule | |
| 229 bool InstructForm::is_parm(FormDict &globals) { | |
| 230 if ( ! _matrule) return false; | |
| 231 | |
| 232 int index = 0; | |
| 233 if (_matrule->find_type("Parm",index)) return true; | |
| 234 | |
| 235 return false; | |
| 236 } | |
| 237 | |
| 238 | |
| 239 // Return 'true' if this instruction matches an ideal 'Copy*' node | |
| 240 int InstructForm::is_ideal_copy() const { | |
| 241 return _matrule ? _matrule->is_ideal_copy() : 0; | |
| 242 } | |
| 243 | |
| 244 // Return 'true' if this instruction is too complex to rematerialize. | |
| 245 int InstructForm::is_expensive() const { | |
| 246 // We can prove it is cheap if it has an empty encoding. | |
| 247 // This helps with platform-specific nops like ThreadLocal and RoundFloat. | |
| 248 if (is_empty_encoding()) | |
| 249 return 0; | |
| 250 | |
| 251 if (is_tls_instruction()) | |
| 252 return 1; | |
| 253 | |
| 254 if (_matrule == NULL) return 0; | |
| 255 | |
| 256 return _matrule->is_expensive(); | |
| 257 } | |
| 258 | |
| 259 // Has an empty encoding if _size is a constant zero or there | |
| 260 // are no ins_encode tokens. | |
| 261 int InstructForm::is_empty_encoding() const { | |
| 262 if (_insencode != NULL) { | |
| 263 _insencode->reset(); | |
| 264 if (_insencode->encode_class_iter() == NULL) { | |
| 265 return 1; | |
| 266 } | |
| 267 } | |
| 268 if (_size != NULL && strcmp(_size, "0") == 0) { | |
| 269 return 1; | |
| 270 } | |
| 271 return 0; | |
| 272 } | |
| 273 | |
| 274 int InstructForm::is_tls_instruction() const { | |
| 275 if (_ident != NULL && | |
| 276 ( ! strcmp( _ident,"tlsLoadP") || | |
| 277 ! strncmp(_ident,"tlsLoadP_",9)) ) { | |
| 278 return 1; | |
| 279 } | |
| 280 | |
| 281 if (_matrule != NULL && _insencode != NULL) { | |
| 282 const char* opType = _matrule->_opType; | |
| 283 if (strcmp(opType, "Set")==0) | |
| 284 opType = _matrule->_rChild->_opType; | |
| 285 if (strcmp(opType,"ThreadLocal")==0) { | |
| 286 fprintf(stderr, "Warning: ThreadLocal instruction %s should be named 'tlsLoadP_*'\n", | |
| 287 (_ident == NULL ? "NULL" : _ident)); | |
| 288 return 1; | |
| 289 } | |
| 290 } | |
| 291 | |
| 292 return 0; | |
| 293 } | |
| 294 | |
| 295 | |
| 296 // Return 'true' if this instruction matches an ideal 'If' node | |
| 297 bool InstructForm::is_ideal_if() const { | |
| 298 if( _matrule == NULL ) return false; | |
| 299 | |
| 300 return _matrule->is_ideal_if(); | |
| 301 } | |
| 302 | |
| 303 // Return 'true' if this instruction matches an ideal 'FastLock' node | |
| 304 bool InstructForm::is_ideal_fastlock() const { | |
| 305 if( _matrule == NULL ) return false; | |
| 306 | |
| 307 return _matrule->is_ideal_fastlock(); | |
| 308 } | |
| 309 | |
| 310 // Return 'true' if this instruction matches an ideal 'MemBarXXX' node | |
| 311 bool InstructForm::is_ideal_membar() const { | |
| 312 if( _matrule == NULL ) return false; | |
| 313 | |
| 314 return _matrule->is_ideal_membar(); | |
| 315 } | |
| 316 | |
| 317 // Return 'true' if this instruction matches an ideal 'LoadPC' node | |
| 318 bool InstructForm::is_ideal_loadPC() const { | |
| 319 if( _matrule == NULL ) return false; | |
| 320 | |
| 321 return _matrule->is_ideal_loadPC(); | |
| 322 } | |
| 323 | |
| 324 // Return 'true' if this instruction matches an ideal 'Box' node | |
| 325 bool InstructForm::is_ideal_box() const { | |
| 326 if( _matrule == NULL ) return false; | |
| 327 | |
| 328 return _matrule->is_ideal_box(); | |
| 329 } | |
| 330 | |
| 331 // Return 'true' if this instruction matches an ideal 'Goto' node | |
| 332 bool InstructForm::is_ideal_goto() const { | |
| 333 if( _matrule == NULL ) return false; | |
| 334 | |
| 335 return _matrule->is_ideal_goto(); | |
| 336 } | |
| 337 | |
| 338 // Return 'true' if this instruction matches an ideal 'Jump' node | |
| 339 bool InstructForm::is_ideal_jump() const { | |
| 340 if( _matrule == NULL ) return false; | |
| 341 | |
| 342 return _matrule->is_ideal_jump(); | |
| 343 } | |
| 344 | |
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345 // Return 'true' if instruction matches ideal 'If' | 'Goto' | 'CountedLoopEnd' |
| 0 | 346 bool InstructForm::is_ideal_branch() const { |
| 347 if( _matrule == NULL ) return false; | |
| 348 | |
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349 return _matrule->is_ideal_if() || _matrule->is_ideal_goto(); |
| 0 | 350 } |
| 351 | |
| 352 | |
| 353 // Return 'true' if this instruction matches an ideal 'Return' node | |
| 354 bool InstructForm::is_ideal_return() const { | |
| 355 if( _matrule == NULL ) return false; | |
| 356 | |
| 357 // Check MatchRule to see if the first entry is the ideal "Return" node | |
| 358 int index = 0; | |
| 359 if (_matrule->find_type("Return",index)) return true; | |
| 360 if (_matrule->find_type("Rethrow",index)) return true; | |
| 361 if (_matrule->find_type("TailCall",index)) return true; | |
| 362 if (_matrule->find_type("TailJump",index)) return true; | |
| 363 | |
| 364 return false; | |
| 365 } | |
| 366 | |
| 367 // Return 'true' if this instruction matches an ideal 'Halt' node | |
| 368 bool InstructForm::is_ideal_halt() const { | |
| 369 int index = 0; | |
| 370 return _matrule && _matrule->find_type("Halt",index); | |
| 371 } | |
| 372 | |
| 373 // Return 'true' if this instruction matches an ideal 'SafePoint' node | |
| 374 bool InstructForm::is_ideal_safepoint() const { | |
| 375 int index = 0; | |
| 376 return _matrule && _matrule->find_type("SafePoint",index); | |
| 377 } | |
| 378 | |
| 379 // Return 'true' if this instruction matches an ideal 'Nop' node | |
| 380 bool InstructForm::is_ideal_nop() const { | |
| 381 return _ident && _ident[0] == 'N' && _ident[1] == 'o' && _ident[2] == 'p' && _ident[3] == '_'; | |
| 382 } | |
| 383 | |
| 384 bool InstructForm::is_ideal_control() const { | |
| 385 if ( ! _matrule) return false; | |
| 386 | |
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387 return is_ideal_return() || is_ideal_branch() || _matrule->is_ideal_jump() || is_ideal_halt(); |
| 0 | 388 } |
| 389 | |
| 390 // Return 'true' if this instruction matches an ideal 'Call' node | |
| 391 Form::CallType InstructForm::is_ideal_call() const { | |
| 392 if( _matrule == NULL ) return Form::invalid_type; | |
| 393 | |
| 394 // Check MatchRule to see if the first entry is the ideal "Call" node | |
| 395 int idx = 0; | |
| 396 if(_matrule->find_type("CallStaticJava",idx)) return Form::JAVA_STATIC; | |
| 397 idx = 0; | |
| 398 if(_matrule->find_type("Lock",idx)) return Form::JAVA_STATIC; | |
| 399 idx = 0; | |
| 400 if(_matrule->find_type("Unlock",idx)) return Form::JAVA_STATIC; | |
| 401 idx = 0; | |
| 402 if(_matrule->find_type("CallDynamicJava",idx)) return Form::JAVA_DYNAMIC; | |
| 403 idx = 0; | |
| 404 if(_matrule->find_type("CallRuntime",idx)) return Form::JAVA_RUNTIME; | |
| 405 idx = 0; | |
| 406 if(_matrule->find_type("CallLeaf",idx)) return Form::JAVA_LEAF; | |
| 407 idx = 0; | |
| 408 if(_matrule->find_type("CallLeafNoFP",idx)) return Form::JAVA_LEAF; | |
| 409 idx = 0; | |
| 410 | |
| 411 return Form::invalid_type; | |
| 412 } | |
| 413 | |
| 414 // Return 'true' if this instruction matches an ideal 'Load?' node | |
| 415 Form::DataType InstructForm::is_ideal_load() const { | |
| 416 if( _matrule == NULL ) return Form::none; | |
| 417 | |
| 418 return _matrule->is_ideal_load(); | |
| 419 } | |
| 420 | |
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421 // Return 'true' if this instruction matches an ideal 'LoadKlass' node |
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422 bool InstructForm::skip_antidep_check() const { |
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423 if( _matrule == NULL ) return false; |
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424 |
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425 return _matrule->skip_antidep_check(); |
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426 } |
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427 |
| 0 | 428 // Return 'true' if this instruction matches an ideal 'Load?' node |
| 429 Form::DataType InstructForm::is_ideal_store() const { | |
| 430 if( _matrule == NULL ) return Form::none; | |
| 431 | |
| 432 return _matrule->is_ideal_store(); | |
| 433 } | |
| 434 | |
| 435 // Return the input register that must match the output register | |
| 436 // If this is not required, return 0 | |
| 437 uint InstructForm::two_address(FormDict &globals) { | |
| 438 uint matching_input = 0; | |
| 439 if(_components.count() == 0) return 0; | |
| 440 | |
| 441 _components.reset(); | |
| 442 Component *comp = _components.iter(); | |
| 443 // Check if there is a DEF | |
| 444 if( comp->isa(Component::DEF) ) { | |
| 445 // Check that this is a register | |
| 446 const char *def_type = comp->_type; | |
| 447 const Form *form = globals[def_type]; | |
| 448 OperandForm *op = form->is_operand(); | |
| 449 if( op ) { | |
| 450 if( op->constrained_reg_class() != NULL && | |
| 451 op->interface_type(globals) == Form::register_interface ) { | |
| 452 // Remember the local name for equality test later | |
| 453 const char *def_name = comp->_name; | |
| 454 // Check if a component has the same name and is a USE | |
| 455 do { | |
| 456 if( comp->isa(Component::USE) && strcmp(comp->_name,def_name)==0 ) { | |
| 457 return operand_position_format(def_name); | |
| 458 } | |
| 459 } while( (comp = _components.iter()) != NULL); | |
| 460 } | |
| 461 } | |
| 462 } | |
| 463 | |
| 464 return 0; | |
| 465 } | |
| 466 | |
| 467 | |
| 468 // when chaining a constant to an instruction, returns 'true' and sets opType | |
| 469 Form::DataType InstructForm::is_chain_of_constant(FormDict &globals) { | |
| 470 const char *dummy = NULL; | |
| 471 const char *dummy2 = NULL; | |
| 472 return is_chain_of_constant(globals, dummy, dummy2); | |
| 473 } | |
| 474 Form::DataType InstructForm::is_chain_of_constant(FormDict &globals, | |
| 475 const char * &opTypeParam) { | |
| 476 const char *result = NULL; | |
| 477 | |
| 478 return is_chain_of_constant(globals, opTypeParam, result); | |
| 479 } | |
| 480 | |
| 481 Form::DataType InstructForm::is_chain_of_constant(FormDict &globals, | |
| 482 const char * &opTypeParam, const char * &resultParam) { | |
| 483 Form::DataType data_type = Form::none; | |
| 484 if ( ! _matrule) return data_type; | |
| 485 | |
| 486 // !!!!! | |
| 487 // The source of the chain rule is 'position = 1' | |
| 488 uint position = 1; | |
| 489 const char *result = NULL; | |
| 490 const char *name = NULL; | |
| 491 const char *opType = NULL; | |
| 492 // Here base_operand is looking for an ideal type to be returned (opType). | |
| 493 if ( _matrule->is_chain_rule(globals) | |
| 494 && _matrule->base_operand(position, globals, result, name, opType) ) { | |
| 495 data_type = ideal_to_const_type(opType); | |
| 496 | |
| 497 // if it isn't an ideal constant type, just return | |
| 498 if ( data_type == Form::none ) return data_type; | |
| 499 | |
| 500 // Ideal constant types also adjust the opType parameter. | |
| 501 resultParam = result; | |
| 502 opTypeParam = opType; | |
| 503 return data_type; | |
| 504 } | |
| 505 | |
| 506 return data_type; | |
| 507 } | |
| 508 | |
| 509 // Check if a simple chain rule | |
| 510 bool InstructForm::is_simple_chain_rule(FormDict &globals) const { | |
| 511 if( _matrule && _matrule->sets_result() | |
| 512 && _matrule->_rChild->_lChild == NULL | |
| 513 && globals[_matrule->_rChild->_opType] | |
| 514 && globals[_matrule->_rChild->_opType]->is_opclass() ) { | |
| 515 return true; | |
| 516 } | |
| 517 return false; | |
| 518 } | |
| 519 | |
| 520 // check for structural rematerialization | |
| 521 bool InstructForm::rematerialize(FormDict &globals, RegisterForm *registers ) { | |
| 522 bool rematerialize = false; | |
| 523 | |
| 524 Form::DataType data_type = is_chain_of_constant(globals); | |
| 525 if( data_type != Form::none ) | |
| 526 rematerialize = true; | |
| 527 | |
| 528 // Constants | |
| 529 if( _components.count() == 1 && _components[0]->is(Component::USE_DEF) ) | |
| 530 rematerialize = true; | |
| 531 | |
| 532 // Pseudo-constants (values easily available to the runtime) | |
| 533 if (is_empty_encoding() && is_tls_instruction()) | |
| 534 rematerialize = true; | |
| 535 | |
| 536 // 1-input, 1-output, such as copies or increments. | |
| 537 if( _components.count() == 2 && | |
| 538 _components[0]->is(Component::DEF) && | |
| 539 _components[1]->isa(Component::USE) ) | |
| 540 rematerialize = true; | |
| 541 | |
| 542 // Check for an ideal 'Load?' and eliminate rematerialize option | |
| 543 if ( is_ideal_load() != Form::none || // Ideal load? Do not rematerialize | |
| 544 is_ideal_copy() != Form::none || // Ideal copy? Do not rematerialize | |
| 545 is_expensive() != Form::none) { // Expensive? Do not rematerialize | |
| 546 rematerialize = false; | |
| 547 } | |
| 548 | |
| 549 // Always rematerialize the flags. They are more expensive to save & | |
| 550 // restore than to recompute (and possibly spill the compare's inputs). | |
| 551 if( _components.count() >= 1 ) { | |
| 552 Component *c = _components[0]; | |
| 553 const Form *form = globals[c->_type]; | |
| 554 OperandForm *opform = form->is_operand(); | |
| 555 if( opform ) { | |
| 556 // Avoid the special stack_slots register classes | |
| 557 const char *rc_name = opform->constrained_reg_class(); | |
| 558 if( rc_name ) { | |
| 559 if( strcmp(rc_name,"stack_slots") ) { | |
| 560 // Check for ideal_type of RegFlags | |
| 561 const char *type = opform->ideal_type( globals, registers ); | |
| 562 if( !strcmp(type,"RegFlags") ) | |
| 563 rematerialize = true; | |
| 564 } else | |
| 565 rematerialize = false; // Do not rematerialize things target stk | |
| 566 } | |
| 567 } | |
| 568 } | |
| 569 | |
| 570 return rematerialize; | |
| 571 } | |
| 572 | |
| 573 // loads from memory, so must check for anti-dependence | |
| 574 bool InstructForm::needs_anti_dependence_check(FormDict &globals) const { | |
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575 if ( skip_antidep_check() ) return false; |
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576 |
| 0 | 577 // Machine independent loads must be checked for anti-dependences |
| 578 if( is_ideal_load() != Form::none ) return true; | |
| 579 | |
| 580 // !!!!! !!!!! !!!!! | |
| 581 // TEMPORARY | |
| 582 // if( is_simple_chain_rule(globals) ) return false; | |
| 583 | |
| 681 | 584 // String.(compareTo/equals/indexOf) and Arrays.equals use many memorys edges, |
| 585 // but writes none | |
| 0 | 586 if( _matrule && _matrule->_rChild && |
| 681 | 587 ( strcmp(_matrule->_rChild->_opType,"StrComp" )==0 || |
| 588 strcmp(_matrule->_rChild->_opType,"StrEquals" )==0 || | |
| 589 strcmp(_matrule->_rChild->_opType,"StrIndexOf" )==0 || | |
| 590 strcmp(_matrule->_rChild->_opType,"AryEq" )==0 )) | |
| 0 | 591 return true; |
| 592 | |
| 593 // Check if instruction has a USE of a memory operand class, but no defs | |
| 594 bool USE_of_memory = false; | |
| 595 bool DEF_of_memory = false; | |
| 596 Component *comp = NULL; | |
| 597 ComponentList &components = (ComponentList &)_components; | |
| 598 | |
| 599 components.reset(); | |
| 600 while( (comp = components.iter()) != NULL ) { | |
| 601 const Form *form = globals[comp->_type]; | |
| 602 if( !form ) continue; | |
| 603 OpClassForm *op = form->is_opclass(); | |
| 604 if( !op ) continue; | |
| 605 if( form->interface_type(globals) == Form::memory_interface ) { | |
| 606 if( comp->isa(Component::USE) ) USE_of_memory = true; | |
| 607 if( comp->isa(Component::DEF) ) { | |
| 608 OperandForm *oper = form->is_operand(); | |
| 609 if( oper && oper->is_user_name_for_sReg() ) { | |
| 610 // Stack slots are unaliased memory handled by allocator | |
| 611 oper = oper; // debug stopping point !!!!! | |
| 612 } else { | |
| 613 DEF_of_memory = true; | |
| 614 } | |
| 615 } | |
| 616 } | |
| 617 } | |
| 618 return (USE_of_memory && !DEF_of_memory); | |
| 619 } | |
| 620 | |
| 621 | |
| 622 bool InstructForm::is_wide_memory_kill(FormDict &globals) const { | |
| 623 if( _matrule == NULL ) return false; | |
| 624 if( !_matrule->_opType ) return false; | |
| 625 | |
| 626 if( strcmp(_matrule->_opType,"MemBarRelease") == 0 ) return true; | |
| 627 if( strcmp(_matrule->_opType,"MemBarAcquire") == 0 ) return true; | |
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628 if( strcmp(_matrule->_opType,"MemBarReleaseLock") == 0 ) return true; |
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629 if( strcmp(_matrule->_opType,"MemBarAcquireLock") == 0 ) return true; |
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630 if( strcmp(_matrule->_opType,"MemBarStoreStore") == 0 ) return true; |
| 0 | 631 |
| 632 return false; | |
| 633 } | |
| 634 | |
| 635 int InstructForm::memory_operand(FormDict &globals) const { | |
| 636 // Machine independent loads must be checked for anti-dependences | |
| 637 // Check if instruction has a USE of a memory operand class, or a def. | |
| 638 int USE_of_memory = 0; | |
| 639 int DEF_of_memory = 0; | |
| 640 const char* last_memory_DEF = NULL; // to test DEF/USE pairing in asserts | |
| 641 Component *unique = NULL; | |
| 642 Component *comp = NULL; | |
| 643 ComponentList &components = (ComponentList &)_components; | |
| 644 | |
| 645 components.reset(); | |
| 646 while( (comp = components.iter()) != NULL ) { | |
| 647 const Form *form = globals[comp->_type]; | |
| 648 if( !form ) continue; | |
| 649 OpClassForm *op = form->is_opclass(); | |
| 650 if( !op ) continue; | |
| 651 if( op->stack_slots_only(globals) ) continue; | |
| 652 if( form->interface_type(globals) == Form::memory_interface ) { | |
| 653 if( comp->isa(Component::DEF) ) { | |
| 654 last_memory_DEF = comp->_name; | |
| 655 DEF_of_memory++; | |
| 656 unique = comp; | |
| 657 } else if( comp->isa(Component::USE) ) { | |
| 658 if( last_memory_DEF != NULL ) { | |
| 659 assert(0 == strcmp(last_memory_DEF, comp->_name), "every memory DEF is followed by a USE of the same name"); | |
| 660 last_memory_DEF = NULL; | |
| 661 } | |
| 662 USE_of_memory++; | |
| 663 if (DEF_of_memory == 0) // defs take precedence | |
| 664 unique = comp; | |
| 665 } else { | |
| 666 assert(last_memory_DEF == NULL, "unpaired memory DEF"); | |
| 667 } | |
| 668 } | |
| 669 } | |
| 670 assert(last_memory_DEF == NULL, "unpaired memory DEF"); | |
| 671 assert(USE_of_memory >= DEF_of_memory, "unpaired memory DEF"); | |
| 672 USE_of_memory -= DEF_of_memory; // treat paired DEF/USE as one occurrence | |
| 673 if( (USE_of_memory + DEF_of_memory) > 0 ) { | |
| 674 if( is_simple_chain_rule(globals) ) { | |
| 675 //fprintf(stderr, "Warning: chain rule is not really a memory user.\n"); | |
| 676 //((InstructForm*)this)->dump(); | |
| 677 // Preceding code prints nothing on sparc and these insns on intel: | |
| 678 // leaP8 leaP32 leaPIdxOff leaPIdxScale leaPIdxScaleOff leaP8 leaP32 | |
| 679 // leaPIdxOff leaPIdxScale leaPIdxScaleOff | |
| 680 return NO_MEMORY_OPERAND; | |
| 681 } | |
| 682 | |
| 683 if( DEF_of_memory == 1 ) { | |
| 684 assert(unique != NULL, ""); | |
| 685 if( USE_of_memory == 0 ) { | |
| 686 // unique def, no uses | |
| 687 } else { | |
| 688 // // unique def, some uses | |
| 689 // // must return bottom unless all uses match def | |
| 690 // unique = NULL; | |
| 691 } | |
| 692 } else if( DEF_of_memory > 0 ) { | |
| 693 // multiple defs, don't care about uses | |
| 694 unique = NULL; | |
| 695 } else if( USE_of_memory == 1) { | |
| 696 // unique use, no defs | |
| 697 assert(unique != NULL, ""); | |
| 698 } else if( USE_of_memory > 0 ) { | |
| 699 // multiple uses, no defs | |
| 700 unique = NULL; | |
| 701 } else { | |
| 702 assert(false, "bad case analysis"); | |
| 703 } | |
| 704 // process the unique DEF or USE, if there is one | |
| 705 if( unique == NULL ) { | |
| 706 return MANY_MEMORY_OPERANDS; | |
| 707 } else { | |
| 708 int pos = components.operand_position(unique->_name); | |
| 709 if( unique->isa(Component::DEF) ) { | |
| 710 pos += 1; // get corresponding USE from DEF | |
| 711 } | |
| 712 assert(pos >= 1, "I was just looking at it!"); | |
| 713 return pos; | |
| 714 } | |
| 715 } | |
| 716 | |
| 717 // missed the memory op?? | |
| 718 if( true ) { // %%% should not be necessary | |
| 719 if( is_ideal_store() != Form::none ) { | |
| 720 fprintf(stderr, "Warning: cannot find memory opnd in instr.\n"); | |
| 721 ((InstructForm*)this)->dump(); | |
| 722 // pretend it has multiple defs and uses | |
| 723 return MANY_MEMORY_OPERANDS; | |
| 724 } | |
| 725 if( is_ideal_load() != Form::none ) { | |
| 726 fprintf(stderr, "Warning: cannot find memory opnd in instr.\n"); | |
| 727 ((InstructForm*)this)->dump(); | |
| 728 // pretend it has multiple uses and no defs | |
| 729 return MANY_MEMORY_OPERANDS; | |
| 730 } | |
| 731 } | |
| 732 | |
| 733 return NO_MEMORY_OPERAND; | |
| 734 } | |
| 735 | |
| 736 | |
| 737 // This instruction captures the machine-independent bottom_type | |
| 738 // Expected use is for pointer vs oop determination for LoadP | |
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739 bool InstructForm::captures_bottom_type(FormDict &globals) const { |
| 0 | 740 if( _matrule && _matrule->_rChild && |
| 741 (!strcmp(_matrule->_rChild->_opType,"CastPP") || // new result type | |
| 742 !strcmp(_matrule->_rChild->_opType,"CastX2P") || // new result type | |
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743 !strcmp(_matrule->_rChild->_opType,"DecodeN") || |
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744 !strcmp(_matrule->_rChild->_opType,"EncodeP") || |
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745 !strcmp(_matrule->_rChild->_opType,"LoadN") || |
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746 !strcmp(_matrule->_rChild->_opType,"LoadNKlass") || |
| 0 | 747 !strcmp(_matrule->_rChild->_opType,"CreateEx") || // type of exception |
| 748 !strcmp(_matrule->_rChild->_opType,"CheckCastPP")) ) return true; | |
| 749 else if ( is_ideal_load() == Form::idealP ) return true; | |
| 750 else if ( is_ideal_store() != Form::none ) return true; | |
| 751 | |
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752 if (needs_base_oop_edge(globals)) return true; |
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753 |
| 0 | 754 return false; |
| 755 } | |
| 756 | |
| 757 | |
| 758 // Access instr_cost attribute or return NULL. | |
| 759 const char* InstructForm::cost() { | |
| 760 for (Attribute* cur = _attribs; cur != NULL; cur = (Attribute*)cur->_next) { | |
| 761 if( strcmp(cur->_ident,AttributeForm::_ins_cost) == 0 ) { | |
| 762 return cur->_val; | |
| 763 } | |
| 764 } | |
| 765 return NULL; | |
| 766 } | |
| 767 | |
| 768 // Return count of top-level operands. | |
| 769 uint InstructForm::num_opnds() { | |
| 770 int num_opnds = _components.num_operands(); | |
| 771 | |
| 772 // Need special handling for matching some ideal nodes | |
| 773 // i.e. Matching a return node | |
| 774 /* | |
| 775 if( _matrule ) { | |
| 776 if( strcmp(_matrule->_opType,"Return" )==0 || | |
| 777 strcmp(_matrule->_opType,"Halt" )==0 ) | |
| 778 return 3; | |
| 779 } | |
| 780 */ | |
| 781 return num_opnds; | |
| 782 } | |
| 783 | |
| 784 // Return count of unmatched operands. | |
| 785 uint InstructForm::num_post_match_opnds() { | |
| 786 uint num_post_match_opnds = _components.count(); | |
| 787 uint num_match_opnds = _components.match_count(); | |
| 788 num_post_match_opnds = num_post_match_opnds - num_match_opnds; | |
| 789 | |
| 790 return num_post_match_opnds; | |
| 791 } | |
| 792 | |
| 793 // Return the number of leaves below this complex operand | |
| 794 uint InstructForm::num_consts(FormDict &globals) const { | |
| 795 if ( ! _matrule) return 0; | |
| 796 | |
| 797 // This is a recursive invocation on all operands in the matchrule | |
| 798 return _matrule->num_consts(globals); | |
| 799 } | |
| 800 | |
| 801 // Constants in match rule with specified type | |
| 802 uint InstructForm::num_consts(FormDict &globals, Form::DataType type) const { | |
| 803 if ( ! _matrule) return 0; | |
| 804 | |
| 805 // This is a recursive invocation on all operands in the matchrule | |
| 806 return _matrule->num_consts(globals, type); | |
| 807 } | |
| 808 | |
| 809 | |
| 810 // Return the register class associated with 'leaf'. | |
| 811 const char *InstructForm::out_reg_class(FormDict &globals) { | |
| 812 assert( false, "InstructForm::out_reg_class(FormDict &globals); Not Implemented"); | |
| 813 | |
| 814 return NULL; | |
| 815 } | |
| 816 | |
| 817 | |
| 818 | |
| 819 // Lookup the starting position of inputs we are interested in wrt. ideal nodes | |
| 820 uint InstructForm::oper_input_base(FormDict &globals) { | |
| 821 if( !_matrule ) return 1; // Skip control for most nodes | |
| 822 | |
| 823 // Need special handling for matching some ideal nodes | |
| 824 // i.e. Matching a return node | |
| 825 if( strcmp(_matrule->_opType,"Return" )==0 || | |
| 826 strcmp(_matrule->_opType,"Rethrow" )==0 || | |
| 827 strcmp(_matrule->_opType,"TailCall" )==0 || | |
| 828 strcmp(_matrule->_opType,"TailJump" )==0 || | |
| 829 strcmp(_matrule->_opType,"SafePoint" )==0 || | |
| 830 strcmp(_matrule->_opType,"Halt" )==0 ) | |
| 831 return AdlcVMDeps::Parms; // Skip the machine-state edges | |
| 832 | |
| 833 if( _matrule->_rChild && | |
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834 ( strcmp(_matrule->_rChild->_opType,"AryEq" )==0 || |
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835 strcmp(_matrule->_rChild->_opType,"StrComp" )==0 || |
| 681 | 836 strcmp(_matrule->_rChild->_opType,"StrEquals" )==0 || |
| 837 strcmp(_matrule->_rChild->_opType,"StrIndexOf")==0 )) { | |
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838 // String.(compareTo/equals/indexOf) and Arrays.equals |
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839 // take 1 control and 1 memory edges. |
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840 return 2; |
| 0 | 841 } |
| 842 | |
| 843 // Check for handling of 'Memory' input/edge in the ideal world. | |
| 844 // The AD file writer is shielded from knowledge of these edges. | |
| 845 int base = 1; // Skip control | |
| 846 base += _matrule->needs_ideal_memory_edge(globals); | |
| 847 | |
| 848 // Also skip the base-oop value for uses of derived oops. | |
| 849 // The AD file writer is shielded from knowledge of these edges. | |
| 850 base += needs_base_oop_edge(globals); | |
| 851 | |
| 852 return base; | |
| 853 } | |
| 854 | |
| 855 // Implementation does not modify state of internal structures | |
| 856 void InstructForm::build_components() { | |
| 857 // Add top-level operands to the components | |
| 858 if (_matrule) _matrule->append_components(_localNames, _components); | |
| 859 | |
| 860 // Add parameters that "do not appear in match rule". | |
| 861 bool has_temp = false; | |
| 862 const char *name; | |
| 863 const char *kill_name = NULL; | |
| 864 for (_parameters.reset(); (name = _parameters.iter()) != NULL;) { | |
| 865 OperandForm *opForm = (OperandForm*)_localNames[name]; | |
| 866 | |
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867 Effect* e = NULL; |
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868 { |
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869 const Form* form = _effects[name]; |
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870 e = form ? form->is_effect() : NULL; |
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871 } |
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872 |
| 0 | 873 if (e != NULL) { |
| 874 has_temp |= e->is(Component::TEMP); | |
| 875 | |
| 876 // KILLs must be declared after any TEMPs because TEMPs are real | |
| 877 // uses so their operand numbering must directly follow the real | |
| 878 // inputs from the match rule. Fixing the numbering seems | |
| 879 // complex so simply enforce the restriction during parse. | |
| 880 if (kill_name != NULL && | |
| 881 e->isa(Component::TEMP) && !e->isa(Component::DEF)) { | |
| 882 OperandForm* kill = (OperandForm*)_localNames[kill_name]; | |
| 883 globalAD->syntax_err(_linenum, "%s: %s %s must be at the end of the argument list\n", | |
| 884 _ident, kill->_ident, kill_name); | |
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885 } else if (e->isa(Component::KILL) && !e->isa(Component::USE)) { |
| 0 | 886 kill_name = name; |
| 887 } | |
| 888 } | |
| 889 | |
| 890 const Component *component = _components.search(name); | |
| 891 if ( component == NULL ) { | |
| 892 if (e) { | |
| 893 _components.insert(name, opForm->_ident, e->_use_def, false); | |
| 894 component = _components.search(name); | |
| 895 if (component->isa(Component::USE) && !component->isa(Component::TEMP) && _matrule) { | |
| 896 const Form *form = globalAD->globalNames()[component->_type]; | |
| 897 assert( form, "component type must be a defined form"); | |
| 898 OperandForm *op = form->is_operand(); | |
| 899 if (op->_interface && op->_interface->is_RegInterface()) { | |
| 900 globalAD->syntax_err(_linenum, "%s: illegal USE of non-input: %s %s\n", | |
| 901 _ident, opForm->_ident, name); | |
| 902 } | |
| 903 } | |
| 904 } else { | |
| 905 // This would be a nice warning but it triggers in a few places in a benign way | |
| 906 // if (_matrule != NULL && !expands()) { | |
| 907 // globalAD->syntax_err(_linenum, "%s: %s %s not mentioned in effect or match rule\n", | |
| 908 // _ident, opForm->_ident, name); | |
| 909 // } | |
| 910 _components.insert(name, opForm->_ident, Component::INVALID, false); | |
| 911 } | |
| 912 } | |
| 913 else if (e) { | |
| 914 // Component was found in the list | |
| 915 // Check if there is a new effect that requires an extra component. | |
| 916 // This happens when adding 'USE' to a component that is not yet one. | |
| 917 if ((!component->isa( Component::USE) && ((e->_use_def & Component::USE) != 0))) { | |
| 918 if (component->isa(Component::USE) && _matrule) { | |
| 919 const Form *form = globalAD->globalNames()[component->_type]; | |
| 920 assert( form, "component type must be a defined form"); | |
| 921 OperandForm *op = form->is_operand(); | |
| 922 if (op->_interface && op->_interface->is_RegInterface()) { | |
| 923 globalAD->syntax_err(_linenum, "%s: illegal USE of non-input: %s %s\n", | |
| 924 _ident, opForm->_ident, name); | |
| 925 } | |
| 926 } | |
| 927 _components.insert(name, opForm->_ident, e->_use_def, false); | |
| 928 } else { | |
| 929 Component *comp = (Component*)component; | |
| 930 comp->promote_use_def_info(e->_use_def); | |
| 931 } | |
| 932 // Component positions are zero based. | |
| 933 int pos = _components.operand_position(name); | |
| 934 assert( ! (component->isa(Component::DEF) && (pos >= 1)), | |
| 935 "Component::DEF can only occur in the first position"); | |
| 936 } | |
| 937 } | |
| 938 | |
| 939 // Resolving the interactions between expand rules and TEMPs would | |
| 940 // be complex so simply disallow it. | |
| 941 if (_matrule == NULL && has_temp) { | |
| 942 globalAD->syntax_err(_linenum, "%s: TEMPs without match rule isn't supported\n", _ident); | |
| 943 } | |
| 944 | |
| 945 return; | |
| 946 } | |
| 947 | |
| 948 // Return zero-based position in component list; -1 if not in list. | |
| 949 int InstructForm::operand_position(const char *name, int usedef) { | |
| 950 return unique_opnds_idx(_components.operand_position(name, usedef)); | |
| 951 } | |
| 952 | |
| 953 int InstructForm::operand_position_format(const char *name) { | |
| 954 return unique_opnds_idx(_components.operand_position_format(name)); | |
| 955 } | |
| 956 | |
| 957 // Return zero-based position in component list; -1 if not in list. | |
| 958 int InstructForm::label_position() { | |
| 959 return unique_opnds_idx(_components.label_position()); | |
| 960 } | |
| 961 | |
| 962 int InstructForm::method_position() { | |
| 963 return unique_opnds_idx(_components.method_position()); | |
| 964 } | |
| 965 | |
| 966 // Return number of relocation entries needed for this instruction. | |
| 967 uint InstructForm::reloc(FormDict &globals) { | |
| 968 uint reloc_entries = 0; | |
| 969 // Check for "Call" nodes | |
| 970 if ( is_ideal_call() ) ++reloc_entries; | |
| 971 if ( is_ideal_return() ) ++reloc_entries; | |
| 972 if ( is_ideal_safepoint() ) ++reloc_entries; | |
| 973 | |
| 974 | |
| 975 // Check if operands MAYBE oop pointers, by checking for ConP elements | |
| 976 // Proceed through the leaves of the match-tree and check for ConPs | |
| 977 if ( _matrule != NULL ) { | |
| 978 uint position = 0; | |
| 979 const char *result = NULL; | |
| 980 const char *name = NULL; | |
| 981 const char *opType = NULL; | |
| 982 while (_matrule->base_operand(position, globals, result, name, opType)) { | |
| 983 if ( strcmp(opType,"ConP") == 0 ) { | |
| 984 #ifdef SPARC | |
| 985 reloc_entries += 2; // 1 for sethi + 1 for setlo | |
| 986 #else | |
| 987 ++reloc_entries; | |
| 988 #endif | |
| 989 } | |
| 990 ++position; | |
| 991 } | |
| 992 } | |
| 993 | |
| 994 // Above is only a conservative estimate | |
| 995 // because it did not check contents of operand classes. | |
| 996 // !!!!! !!!!! | |
| 997 // Add 1 to reloc info for each operand class in the component list. | |
| 998 Component *comp; | |
| 999 _components.reset(); | |
| 1000 while ( (comp = _components.iter()) != NULL ) { | |
| 1001 const Form *form = globals[comp->_type]; | |
| 1002 assert( form, "Did not find component's type in global names"); | |
| 1003 const OpClassForm *opc = form->is_opclass(); | |
| 1004 const OperandForm *oper = form->is_operand(); | |
| 1005 if ( opc && (oper == NULL) ) { | |
| 1006 ++reloc_entries; | |
| 1007 } else if ( oper ) { | |
| 1008 // floats and doubles loaded out of method's constant pool require reloc info | |
| 1009 Form::DataType type = oper->is_base_constant(globals); | |
| 1010 if ( (type == Form::idealF) || (type == Form::idealD) ) { | |
| 1011 ++reloc_entries; | |
| 1012 } | |
| 1013 } | |
| 1014 } | |
| 1015 | |
| 1016 // Float and Double constants may come from the CodeBuffer table | |
| 1017 // and require relocatable addresses for access | |
| 1018 // !!!!! | |
| 1019 // Check for any component being an immediate float or double. | |
| 1020 Form::DataType data_type = is_chain_of_constant(globals); | |
| 1021 if( data_type==idealD || data_type==idealF ) { | |
| 1022 #ifdef SPARC | |
| 1023 // sparc required more relocation entries for floating constants | |
| 1024 // (expires 9/98) | |
| 1025 reloc_entries += 6; | |
| 1026 #else | |
| 1027 reloc_entries++; | |
| 1028 #endif | |
| 1029 } | |
| 1030 | |
| 1031 return reloc_entries; | |
| 1032 } | |
| 1033 | |
| 1034 // Utility function defined in archDesc.cpp | |
| 1035 extern bool is_def(int usedef); | |
| 1036 | |
| 1037 // Return the result of reducing an instruction | |
| 1038 const char *InstructForm::reduce_result() { | |
| 1039 const char* result = "Universe"; // default | |
| 1040 _components.reset(); | |
| 1041 Component *comp = _components.iter(); | |
| 1042 if (comp != NULL && comp->isa(Component::DEF)) { | |
| 1043 result = comp->_type; | |
| 1044 // Override this if the rule is a store operation: | |
| 1045 if (_matrule && _matrule->_rChild && | |
| 1046 is_store_to_memory(_matrule->_rChild->_opType)) | |
| 1047 result = "Universe"; | |
| 1048 } | |
| 1049 return result; | |
| 1050 } | |
| 1051 | |
| 1052 // Return the name of the operand on the right hand side of the binary match | |
| 1053 // Return NULL if there is no right hand side | |
| 1054 const char *InstructForm::reduce_right(FormDict &globals) const { | |
| 1055 if( _matrule == NULL ) return NULL; | |
| 1056 return _matrule->reduce_right(globals); | |
| 1057 } | |
| 1058 | |
| 1059 // Similar for left | |
| 1060 const char *InstructForm::reduce_left(FormDict &globals) const { | |
| 1061 if( _matrule == NULL ) return NULL; | |
| 1062 return _matrule->reduce_left(globals); | |
| 1063 } | |
| 1064 | |
| 1065 | |
| 1066 // Base class for this instruction, MachNode except for calls | |
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1067 const char *InstructForm::mach_base_class(FormDict &globals) const { |
| 0 | 1068 if( is_ideal_call() == Form::JAVA_STATIC ) { |
| 1069 return "MachCallStaticJavaNode"; | |
| 1070 } | |
| 1071 else if( is_ideal_call() == Form::JAVA_DYNAMIC ) { | |
| 1072 return "MachCallDynamicJavaNode"; | |
| 1073 } | |
| 1074 else if( is_ideal_call() == Form::JAVA_RUNTIME ) { | |
| 1075 return "MachCallRuntimeNode"; | |
| 1076 } | |
| 1077 else if( is_ideal_call() == Form::JAVA_LEAF ) { | |
| 1078 return "MachCallLeafNode"; | |
| 1079 } | |
| 1080 else if (is_ideal_return()) { | |
| 1081 return "MachReturnNode"; | |
| 1082 } | |
| 1083 else if (is_ideal_halt()) { | |
| 1084 return "MachHaltNode"; | |
| 1085 } | |
| 1086 else if (is_ideal_safepoint()) { | |
| 1087 return "MachSafePointNode"; | |
| 1088 } | |
| 1089 else if (is_ideal_if()) { | |
| 1090 return "MachIfNode"; | |
| 1091 } | |
| 3842 | 1092 else if (is_ideal_goto()) { |
| 1093 return "MachGotoNode"; | |
| 1094 } | |
| 0 | 1095 else if (is_ideal_fastlock()) { |
| 1096 return "MachFastLockNode"; | |
| 1097 } | |
| 1098 else if (is_ideal_nop()) { | |
| 1099 return "MachNopNode"; | |
| 1100 } | |
| 2008 | 1101 else if (is_mach_constant()) { |
| 1102 return "MachConstantNode"; | |
| 1103 } | |
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1104 else if (captures_bottom_type(globals)) { |
| 0 | 1105 return "MachTypeNode"; |
| 1106 } else { | |
| 1107 return "MachNode"; | |
| 1108 } | |
| 1109 assert( false, "ShouldNotReachHere()"); | |
| 1110 return NULL; | |
| 1111 } | |
| 1112 | |
| 1113 // Compare the instruction predicates for textual equality | |
| 1114 bool equivalent_predicates( const InstructForm *instr1, const InstructForm *instr2 ) { | |
| 1115 const Predicate *pred1 = instr1->_predicate; | |
| 1116 const Predicate *pred2 = instr2->_predicate; | |
| 1117 if( pred1 == NULL && pred2 == NULL ) { | |
| 1118 // no predicates means they are identical | |
| 1119 return true; | |
| 1120 } | |
| 1121 if( pred1 != NULL && pred2 != NULL ) { | |
| 1122 // compare the predicates | |
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1123 if (ADLParser::equivalent_expressions(pred1->_pred, pred2->_pred)) { |
| 0 | 1124 return true; |
| 1125 } | |
| 1126 } | |
| 1127 | |
| 1128 return false; | |
| 1129 } | |
| 1130 | |
| 1131 // Check if this instruction can cisc-spill to 'alternate' | |
| 1132 bool InstructForm::cisc_spills_to(ArchDesc &AD, InstructForm *instr) { | |
| 1133 assert( _matrule != NULL && instr->_matrule != NULL, "must have match rules"); | |
| 1134 // Do not replace if a cisc-version has been found. | |
| 1135 if( cisc_spill_operand() != Not_cisc_spillable ) return false; | |
| 1136 | |
| 1137 int cisc_spill_operand = Maybe_cisc_spillable; | |
| 1138 char *result = NULL; | |
| 1139 char *result2 = NULL; | |
| 1140 const char *op_name = NULL; | |
| 1141 const char *reg_type = NULL; | |
| 1142 FormDict &globals = AD.globalNames(); | |
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1143 cisc_spill_operand = _matrule->matchrule_cisc_spill_match(globals, AD.get_registers(), instr->_matrule, op_name, reg_type); |
| 0 | 1144 if( (cisc_spill_operand != Not_cisc_spillable) && (op_name != NULL) && equivalent_predicates(this, instr) ) { |
| 1145 cisc_spill_operand = operand_position(op_name, Component::USE); | |
| 1146 int def_oper = operand_position(op_name, Component::DEF); | |
| 1147 if( def_oper == NameList::Not_in_list && instr->num_opnds() == num_opnds()) { | |
| 1148 // Do not support cisc-spilling for destination operands and | |
| 1149 // make sure they have the same number of operands. | |
| 1150 _cisc_spill_alternate = instr; | |
| 1151 instr->set_cisc_alternate(true); | |
| 1152 if( AD._cisc_spill_debug ) { | |
| 1153 fprintf(stderr, "Instruction %s cisc-spills-to %s\n", _ident, instr->_ident); | |
| 1154 fprintf(stderr, " using operand %s %s at index %d\n", reg_type, op_name, cisc_spill_operand); | |
| 1155 } | |
| 1156 // Record that a stack-version of the reg_mask is needed | |
| 1157 // !!!!! | |
| 1158 OperandForm *oper = (OperandForm*)(globals[reg_type]->is_operand()); | |
| 1159 assert( oper != NULL, "cisc-spilling non operand"); | |
| 1160 const char *reg_class_name = oper->constrained_reg_class(); | |
| 1161 AD.set_stack_or_reg(reg_class_name); | |
| 1162 const char *reg_mask_name = AD.reg_mask(*oper); | |
| 1163 set_cisc_reg_mask_name(reg_mask_name); | |
| 1164 const char *stack_or_reg_mask_name = AD.stack_or_reg_mask(*oper); | |
| 1165 } else { | |
| 1166 cisc_spill_operand = Not_cisc_spillable; | |
| 1167 } | |
| 1168 } else { | |
| 1169 cisc_spill_operand = Not_cisc_spillable; | |
| 1170 } | |
| 1171 | |
| 1172 set_cisc_spill_operand(cisc_spill_operand); | |
| 1173 return (cisc_spill_operand != Not_cisc_spillable); | |
| 1174 } | |
| 1175 | |
| 1176 // Check to see if this instruction can be replaced with the short branch | |
| 1177 // instruction `short-branch' | |
| 1178 bool InstructForm::check_branch_variant(ArchDesc &AD, InstructForm *short_branch) { | |
| 1179 if (_matrule != NULL && | |
| 1180 this != short_branch && // Don't match myself | |
| 1181 !is_short_branch() && // Don't match another short branch variant | |
| 1182 reduce_result() != NULL && | |
| 1183 strcmp(reduce_result(), short_branch->reduce_result()) == 0 && | |
| 1184 _matrule->equivalent(AD.globalNames(), short_branch->_matrule)) { | |
| 1185 // The instructions are equivalent. | |
| 3851 | 1186 |
| 1187 // Now verify that both instructions have the same parameters and | |
| 1188 // the same effects. Both branch forms should have the same inputs | |
| 1189 // and resulting projections to correctly replace a long branch node | |
| 1190 // with corresponding short branch node during code generation. | |
| 1191 | |
| 1192 bool different = false; | |
| 1193 if (short_branch->_components.count() != _components.count()) { | |
| 1194 different = true; | |
| 1195 } else if (_components.count() > 0) { | |
| 1196 short_branch->_components.reset(); | |
| 1197 _components.reset(); | |
| 1198 Component *comp; | |
| 1199 while ((comp = _components.iter()) != NULL) { | |
| 1200 Component *short_comp = short_branch->_components.iter(); | |
| 1201 if (short_comp == NULL || | |
| 1202 short_comp->_type != comp->_type || | |
| 1203 short_comp->_usedef != comp->_usedef) { | |
| 1204 different = true; | |
| 1205 break; | |
| 1206 } | |
| 1207 } | |
| 1208 if (short_branch->_components.iter() != NULL) | |
| 1209 different = true; | |
| 1210 } | |
| 1211 if (different) { | |
| 1212 globalAD->syntax_err(short_branch->_linenum, "Instruction %s and its short form %s have different parameters\n", _ident, short_branch->_ident); | |
| 1213 } | |
| 0 | 1214 if (AD._short_branch_debug) { |
| 1215 fprintf(stderr, "Instruction %s has short form %s\n", _ident, short_branch->_ident); | |
| 1216 } | |
| 1217 _short_branch_form = short_branch; | |
| 1218 return true; | |
| 1219 } | |
| 1220 return false; | |
| 1221 } | |
| 1222 | |
| 1223 | |
| 1224 // --------------------------- FILE *output_routines | |
| 1225 // | |
| 1226 // Generate the format call for the replacement variable | |
| 1227 void InstructForm::rep_var_format(FILE *fp, const char *rep_var) { | |
| 2008 | 1228 // Handle special constant table variables. |
| 1229 if (strcmp(rep_var, "constanttablebase") == 0) { | |
| 1230 fprintf(fp, "char reg[128]; ra->dump_register(in(mach_constant_base_node_input()), reg);\n"); | |
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1231 fprintf(fp, " st->print(\"%%s\", reg);\n"); |
| 2008 | 1232 return; |
| 1233 } | |
| 1234 if (strcmp(rep_var, "constantoffset") == 0) { | |
| 1235 fprintf(fp, "st->print(\"#%%d\", constant_offset());\n"); | |
| 1236 return; | |
| 1237 } | |
| 1238 if (strcmp(rep_var, "constantaddress") == 0) { | |
| 1239 fprintf(fp, "st->print(\"constant table base + #%%d\", constant_offset());\n"); | |
| 1240 return; | |
| 1241 } | |
| 1242 | |
| 0 | 1243 // Find replacement variable's type |
| 1244 const Form *form = _localNames[rep_var]; | |
| 1245 if (form == NULL) { | |
| 1246 fprintf(stderr, "unknown replacement variable in format statement: '%s'\n", rep_var); | |
| 1247 assert(false, "ShouldNotReachHere()"); | |
| 1248 } | |
| 1249 OpClassForm *opc = form->is_opclass(); | |
| 1250 assert( opc, "replacement variable was not found in local names"); | |
| 1251 // Lookup the index position of the replacement variable | |
| 1252 int idx = operand_position_format(rep_var); | |
| 1253 if ( idx == -1 ) { | |
| 1254 assert( strcmp(opc->_ident,"label")==0, "Unimplemented"); | |
| 1255 assert( false, "ShouldNotReachHere()"); | |
| 1256 } | |
| 1257 | |
| 1258 if (is_noninput_operand(idx)) { | |
| 1259 // This component isn't in the input array. Print out the static | |
| 1260 // name of the register. | |
| 1261 OperandForm* oper = form->is_operand(); | |
| 1262 if (oper != NULL && oper->is_bound_register()) { | |
| 1263 const RegDef* first = oper->get_RegClass()->find_first_elem(); | |
| 1264 fprintf(fp, " tty->print(\"%s\");\n", first->_regname); | |
| 1265 } else { | |
| 1266 globalAD->syntax_err(_linenum, "In %s can't find format for %s %s", _ident, opc->_ident, rep_var); | |
| 1267 } | |
| 1268 } else { | |
| 1269 // Output the format call for this operand | |
| 1270 fprintf(fp,"opnd_array(%d)->",idx); | |
| 1271 if (idx == 0) | |
| 1272 fprintf(fp,"int_format(ra, this, st); // %s\n", rep_var); | |
| 1273 else | |
| 1274 fprintf(fp,"ext_format(ra, this,idx%d, st); // %s\n", idx, rep_var ); | |
| 1275 } | |
| 1276 } | |
| 1277 | |
| 1278 // Seach through operands to determine parameters unique positions. | |
| 1279 void InstructForm::set_unique_opnds() { | |
| 1280 uint* uniq_idx = NULL; | |
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1281 int nopnds = num_opnds(); |
| 0 | 1282 uint num_uniq = nopnds; |
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1283 int i; |
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1284 _uniq_idx_length = 0; |
| 0 | 1285 if ( nopnds > 0 ) { |
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1286 // Allocate index array. Worst case we're mapping from each |
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1287 // component back to an index and any DEF always goes at 0 so the |
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1288 // length of the array has to be the number of components + 1. |
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1289 _uniq_idx_length = _components.count() + 1; |
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1290 uniq_idx = (uint*) malloc(sizeof(uint)*(_uniq_idx_length)); |
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1291 for( i = 0; i < _uniq_idx_length; i++ ) { |
| 0 | 1292 uniq_idx[i] = i; |
| 1293 } | |
| 1294 } | |
| 1295 // Do it only if there is a match rule and no expand rule. With an | |
| 1296 // expand rule it is done by creating new mach node in Expand() | |
| 1297 // method. | |
| 1298 if ( nopnds > 0 && _matrule != NULL && _exprule == NULL ) { | |
| 1299 const char *name; | |
| 1300 uint count; | |
| 1301 bool has_dupl_use = false; | |
| 1302 | |
| 1303 _parameters.reset(); | |
| 1304 while( (name = _parameters.iter()) != NULL ) { | |
| 1305 count = 0; | |
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1306 int position = 0; |
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1307 int uniq_position = 0; |
| 0 | 1308 _components.reset(); |
| 1309 Component *comp = NULL; | |
| 1310 if( sets_result() ) { | |
| 1311 comp = _components.iter(); | |
| 1312 position++; | |
| 1313 } | |
| 1314 // The next code is copied from the method operand_position(). | |
| 1315 for (; (comp = _components.iter()) != NULL; ++position) { | |
| 1316 // When the first component is not a DEF, | |
| 1317 // leave space for the result operand! | |
| 1318 if ( position==0 && (! comp->isa(Component::DEF)) ) { | |
| 1319 ++position; | |
| 1320 } | |
| 1321 if( strcmp(name, comp->_name)==0 ) { | |
| 1322 if( ++count > 1 ) { | |
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1323 assert(position < _uniq_idx_length, "out of bounds"); |
| 0 | 1324 uniq_idx[position] = uniq_position; |
| 1325 has_dupl_use = true; | |
| 1326 } else { | |
| 1327 uniq_position = position; | |
| 1328 } | |
| 1329 } | |
| 1330 if( comp->isa(Component::DEF) | |
| 1331 && comp->isa(Component::USE) ) { | |
| 1332 ++position; | |
| 1333 if( position != 1 ) | |
| 1334 --position; // only use two slots for the 1st USE_DEF | |
| 1335 } | |
| 1336 } | |
| 1337 } | |
| 1338 if( has_dupl_use ) { | |
| 1339 for( i = 1; i < nopnds; i++ ) | |
| 1340 if( i != uniq_idx[i] ) | |
| 1341 break; | |
| 1342 int j = i; | |
| 1343 for( ; i < nopnds; i++ ) | |
| 1344 if( i == uniq_idx[i] ) | |
| 1345 uniq_idx[i] = j++; | |
| 1346 num_uniq = j; | |
| 1347 } | |
| 1348 } | |
| 1349 _uniq_idx = uniq_idx; | |
| 1350 _num_uniq = num_uniq; | |
| 1351 } | |
| 1352 | |
| 605 | 1353 // Generate index values needed for determining the operand position |
| 0 | 1354 void InstructForm::index_temps(FILE *fp, FormDict &globals, const char *prefix, const char *receiver) { |
| 1355 uint idx = 0; // position of operand in match rule | |
| 1356 int cur_num_opnds = num_opnds(); | |
| 1357 | |
| 1358 // Compute the index into vector of operand pointers: | |
| 1359 // idx0=0 is used to indicate that info comes from this same node, not from input edge. | |
| 1360 // idx1 starts at oper_input_base() | |
| 1361 if ( cur_num_opnds >= 1 ) { | |
| 1362 fprintf(fp," // Start at oper_input_base() and count operands\n"); | |
| 1363 fprintf(fp," unsigned %sidx0 = %d;\n", prefix, oper_input_base(globals)); | |
| 1364 fprintf(fp," unsigned %sidx1 = %d;\n", prefix, oper_input_base(globals)); | |
| 1365 | |
| 1366 // Generate starting points for other unique operands if they exist | |
| 1367 for ( idx = 2; idx < num_unique_opnds(); ++idx ) { | |
| 1368 if( *receiver == 0 ) { | |
| 1369 fprintf(fp," unsigned %sidx%d = %sidx%d + opnd_array(%d)->num_edges();\n", | |
| 1370 prefix, idx, prefix, idx-1, idx-1 ); | |
| 1371 } else { | |
| 1372 fprintf(fp," unsigned %sidx%d = %sidx%d + %s_opnds[%d]->num_edges();\n", | |
| 1373 prefix, idx, prefix, idx-1, receiver, idx-1 ); | |
| 1374 } | |
| 1375 } | |
| 1376 } | |
| 1377 if( *receiver != 0 ) { | |
| 1378 // This value is used by generate_peepreplace when copying a node. | |
| 1379 // Don't emit it in other cases since it can hide bugs with the | |
| 1380 // use invalid idx's. | |
| 1381 fprintf(fp," unsigned %sidx%d = %sreq(); \n", prefix, idx, receiver); | |
| 1382 } | |
| 1383 | |
| 1384 } | |
| 1385 | |
| 1386 // --------------------------- | |
| 1387 bool InstructForm::verify() { | |
| 1388 // !!!!! !!!!! | |
| 1389 // Check that a "label" operand occurs last in the operand list, if present | |
| 1390 return true; | |
| 1391 } | |
| 1392 | |
| 1393 void InstructForm::dump() { | |
| 1394 output(stderr); | |
| 1395 } | |
| 1396 | |
| 1397 void InstructForm::output(FILE *fp) { | |
| 1398 fprintf(fp,"\nInstruction: %s\n", (_ident?_ident:"")); | |
| 1399 if (_matrule) _matrule->output(fp); | |
| 1400 if (_insencode) _insencode->output(fp); | |
| 2008 | 1401 if (_constant) _constant->output(fp); |
| 0 | 1402 if (_opcode) _opcode->output(fp); |
| 1403 if (_attribs) _attribs->output(fp); | |
| 1404 if (_predicate) _predicate->output(fp); | |
| 1405 if (_effects.Size()) { | |
| 1406 fprintf(fp,"Effects\n"); | |
| 1407 _effects.dump(); | |
| 1408 } | |
| 1409 if (_exprule) _exprule->output(fp); | |
| 1410 if (_rewrule) _rewrule->output(fp); | |
| 1411 if (_format) _format->output(fp); | |
| 1412 if (_peephole) _peephole->output(fp); | |
| 1413 } | |
| 1414 | |
| 1415 void MachNodeForm::dump() { | |
| 1416 output(stderr); | |
| 1417 } | |
| 1418 | |
| 1419 void MachNodeForm::output(FILE *fp) { | |
| 1420 fprintf(fp,"\nMachNode: %s\n", (_ident?_ident:"")); | |
| 1421 } | |
| 1422 | |
| 1423 //------------------------------build_predicate-------------------------------- | |
| 1424 // Build instruction predicates. If the user uses the same operand name | |
| 1425 // twice, we need to check that the operands are pointer-eequivalent in | |
| 1426 // the DFA during the labeling process. | |
| 1427 Predicate *InstructForm::build_predicate() { | |
| 1428 char buf[1024], *s=buf; | |
| 1429 Dict names(cmpstr,hashstr,Form::arena); // Map Names to counts | |
| 1430 | |
| 1431 MatchNode *mnode = | |
| 1432 strcmp(_matrule->_opType, "Set") ? _matrule : _matrule->_rChild; | |
| 1433 mnode->count_instr_names(names); | |
| 1434 | |
| 1435 uint first = 1; | |
| 1436 // Start with the predicate supplied in the .ad file. | |
| 1437 if( _predicate ) { | |
| 1438 if( first ) first=0; | |
| 1439 strcpy(s,"("); s += strlen(s); | |
| 1440 strcpy(s,_predicate->_pred); | |
| 1441 s += strlen(s); | |
| 1442 strcpy(s,")"); s += strlen(s); | |
| 1443 } | |
| 1444 for( DictI i(&names); i.test(); ++i ) { | |
| 1445 uintptr_t cnt = (uintptr_t)i._value; | |
| 1446 if( cnt > 1 ) { // Need a predicate at all? | |
| 1447 assert( cnt == 2, "Unimplemented" ); | |
| 1448 // Handle many pairs | |
| 1449 if( first ) first=0; | |
| 1450 else { // All tests must pass, so use '&&' | |
| 1451 strcpy(s," && "); | |
| 1452 s += strlen(s); | |
| 1453 } | |
| 1454 // Add predicate to working buffer | |
| 1455 sprintf(s,"/*%s*/(",(char*)i._key); | |
| 1456 s += strlen(s); | |
| 1457 mnode->build_instr_pred(s,(char*)i._key,0); | |
| 1458 s += strlen(s); | |
| 1459 strcpy(s," == "); s += strlen(s); | |
| 1460 mnode->build_instr_pred(s,(char*)i._key,1); | |
| 1461 s += strlen(s); | |
| 1462 strcpy(s,")"); s += strlen(s); | |
| 1463 } | |
| 1464 } | |
| 1465 if( s == buf ) s = NULL; | |
| 1466 else { | |
| 1467 assert( strlen(buf) < sizeof(buf), "String buffer overflow" ); | |
| 1468 s = strdup(buf); | |
| 1469 } | |
| 1470 return new Predicate(s); | |
| 1471 } | |
| 1472 | |
| 1473 //------------------------------EncodeForm------------------------------------- | |
| 1474 // Constructor | |
| 1475 EncodeForm::EncodeForm() | |
| 1476 : _encClass(cmpstr,hashstr, Form::arena) { | |
| 1477 } | |
| 1478 EncodeForm::~EncodeForm() { | |
| 1479 } | |
| 1480 | |
| 1481 // record a new register class | |
| 1482 EncClass *EncodeForm::add_EncClass(const char *className) { | |
| 1483 EncClass *encClass = new EncClass(className); | |
| 1484 _eclasses.addName(className); | |
| 1485 _encClass.Insert(className,encClass); | |
| 1486 return encClass; | |
| 1487 } | |
| 1488 | |
| 1489 // Lookup the function body for an encoding class | |
| 1490 EncClass *EncodeForm::encClass(const char *className) { | |
| 1491 assert( className != NULL, "Must provide a defined encoding name"); | |
| 1492 | |
| 1493 EncClass *encClass = (EncClass*)_encClass[className]; | |
| 1494 return encClass; | |
| 1495 } | |
| 1496 | |
| 1497 // Lookup the function body for an encoding class | |
| 1498 const char *EncodeForm::encClassBody(const char *className) { | |
| 1499 if( className == NULL ) return NULL; | |
| 1500 | |
| 1501 EncClass *encClass = (EncClass*)_encClass[className]; | |
| 1502 assert( encClass != NULL, "Encode Class is missing."); | |
| 1503 encClass->_code.reset(); | |
| 1504 const char *code = (const char*)encClass->_code.iter(); | |
| 1505 assert( code != NULL, "Found an empty encode class body."); | |
| 1506 | |
| 1507 return code; | |
| 1508 } | |
| 1509 | |
| 1510 // Lookup the function body for an encoding class | |
| 1511 const char *EncodeForm::encClassPrototype(const char *className) { | |
| 1512 assert( className != NULL, "Encode class name must be non NULL."); | |
| 1513 | |
| 1514 return className; | |
| 1515 } | |
| 1516 | |
| 1517 void EncodeForm::dump() { // Debug printer | |
| 1518 output(stderr); | |
| 1519 } | |
| 1520 | |
| 1521 void EncodeForm::output(FILE *fp) { // Write info to output files | |
| 1522 const char *name; | |
| 1523 fprintf(fp,"\n"); | |
| 1524 fprintf(fp,"-------------------- Dump EncodeForm --------------------\n"); | |
| 1525 for (_eclasses.reset(); (name = _eclasses.iter()) != NULL;) { | |
| 1526 ((EncClass*)_encClass[name])->output(fp); | |
| 1527 } | |
| 1528 fprintf(fp,"-------------------- end EncodeForm --------------------\n"); | |
| 1529 } | |
| 1530 //------------------------------EncClass--------------------------------------- | |
| 1531 EncClass::EncClass(const char *name) | |
| 1532 : _localNames(cmpstr,hashstr, Form::arena), _name(name) { | |
| 1533 } | |
| 1534 EncClass::~EncClass() { | |
| 1535 } | |
| 1536 | |
| 1537 // Add a parameter <type,name> pair | |
| 1538 void EncClass::add_parameter(const char *parameter_type, const char *parameter_name) { | |
| 1539 _parameter_type.addName( parameter_type ); | |
| 1540 _parameter_name.addName( parameter_name ); | |
| 1541 } | |
| 1542 | |
| 1543 // Verify operand types in parameter list | |
| 1544 bool EncClass::check_parameter_types(FormDict &globals) { | |
| 1545 // !!!!! | |
| 1546 return false; | |
| 1547 } | |
| 1548 | |
| 1549 // Add the decomposed "code" sections of an encoding's code-block | |
| 1550 void EncClass::add_code(const char *code) { | |
| 1551 _code.addName(code); | |
| 1552 } | |
| 1553 | |
| 1554 // Add the decomposed "replacement variables" of an encoding's code-block | |
| 1555 void EncClass::add_rep_var(char *replacement_var) { | |
| 1556 _code.addName(NameList::_signal); | |
| 1557 _rep_vars.addName(replacement_var); | |
| 1558 } | |
| 1559 | |
| 1560 // Lookup the function body for an encoding class | |
| 1561 int EncClass::rep_var_index(const char *rep_var) { | |
| 1562 uint position = 0; | |
| 1563 const char *name = NULL; | |
| 1564 | |
| 1565 _parameter_name.reset(); | |
| 1566 while ( (name = _parameter_name.iter()) != NULL ) { | |
| 1567 if ( strcmp(rep_var,name) == 0 ) return position; | |
| 1568 ++position; | |
| 1569 } | |
| 1570 | |
| 1571 return -1; | |
| 1572 } | |
| 1573 | |
| 1574 // Check after parsing | |
| 1575 bool EncClass::verify() { | |
| 1576 // 1!!!! | |
| 1577 // Check that each replacement variable, '$name' in architecture description | |
| 1578 // is actually a local variable for this encode class, or a reserved name | |
| 1579 // "primary, secondary, tertiary" | |
| 1580 return true; | |
| 1581 } | |
| 1582 | |
| 1583 void EncClass::dump() { | |
| 1584 output(stderr); | |
| 1585 } | |
| 1586 | |
| 1587 // Write info to output files | |
| 1588 void EncClass::output(FILE *fp) { | |
| 1589 fprintf(fp,"EncClass: %s", (_name ? _name : "")); | |
| 1590 | |
| 1591 // Output the parameter list | |
| 1592 _parameter_type.reset(); | |
| 1593 _parameter_name.reset(); | |
| 1594 const char *type = _parameter_type.iter(); | |
| 1595 const char *name = _parameter_name.iter(); | |
| 1596 fprintf(fp, " ( "); | |
| 1597 for ( ; (type != NULL) && (name != NULL); | |
| 1598 (type = _parameter_type.iter()), (name = _parameter_name.iter()) ) { | |
| 1599 fprintf(fp, " %s %s,", type, name); | |
| 1600 } | |
| 1601 fprintf(fp, " ) "); | |
| 1602 | |
| 1603 // Output the code block | |
| 1604 _code.reset(); | |
| 1605 _rep_vars.reset(); | |
| 1606 const char *code; | |
| 1607 while ( (code = _code.iter()) != NULL ) { | |
| 1608 if ( _code.is_signal(code) ) { | |
| 1609 // A replacement variable | |
| 1610 const char *rep_var = _rep_vars.iter(); | |
| 1611 fprintf(fp,"($%s)", rep_var); | |
| 1612 } else { | |
| 1613 // A section of code | |
| 1614 fprintf(fp,"%s", code); | |
| 1615 } | |
| 1616 } | |
| 1617 | |
| 1618 } | |
| 1619 | |
| 1620 //------------------------------Opcode----------------------------------------- | |
| 1621 Opcode::Opcode(char *primary, char *secondary, char *tertiary) | |
| 1622 : _primary(primary), _secondary(secondary), _tertiary(tertiary) { | |
| 1623 } | |
| 1624 | |
| 1625 Opcode::~Opcode() { | |
| 1626 } | |
| 1627 | |
| 1628 Opcode::opcode_type Opcode::as_opcode_type(const char *param) { | |
| 1629 if( strcmp(param,"primary") == 0 ) { | |
| 1630 return Opcode::PRIMARY; | |
| 1631 } | |
| 1632 else if( strcmp(param,"secondary") == 0 ) { | |
| 1633 return Opcode::SECONDARY; | |
| 1634 } | |
| 1635 else if( strcmp(param,"tertiary") == 0 ) { | |
| 1636 return Opcode::TERTIARY; | |
| 1637 } | |
| 1638 return Opcode::NOT_AN_OPCODE; | |
| 1639 } | |
| 1640 | |
|
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1641 bool Opcode::print_opcode(FILE *fp, Opcode::opcode_type desired_opcode) { |
| 0 | 1642 // Default values previously provided by MachNode::primary()... |
|
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1643 const char *description = NULL; |
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1644 const char *value = NULL; |
| 0 | 1645 // Check if user provided any opcode definitions |
| 1646 if( this != NULL ) { | |
| 1647 // Update 'value' if user provided a definition in the instruction | |
| 1648 switch (desired_opcode) { | |
| 1649 case PRIMARY: | |
| 1650 description = "primary()"; | |
| 1651 if( _primary != NULL) { value = _primary; } | |
| 1652 break; | |
| 1653 case SECONDARY: | |
| 1654 description = "secondary()"; | |
| 1655 if( _secondary != NULL ) { value = _secondary; } | |
| 1656 break; | |
| 1657 case TERTIARY: | |
| 1658 description = "tertiary()"; | |
| 1659 if( _tertiary != NULL ) { value = _tertiary; } | |
| 1660 break; | |
| 1661 default: | |
| 1662 assert( false, "ShouldNotReachHere();"); | |
| 1663 break; | |
| 1664 } | |
| 1665 } | |
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1666 if (value != NULL) { |
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1667 fprintf(fp, "(%s /*%s*/)", value, description); |
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1668 } |
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1669 return value != NULL; |
| 0 | 1670 } |
| 1671 | |
| 1672 void Opcode::dump() { | |
| 1673 output(stderr); | |
| 1674 } | |
| 1675 | |
| 1676 // Write info to output files | |
| 1677 void Opcode::output(FILE *fp) { | |
| 1678 if (_primary != NULL) fprintf(fp,"Primary opcode: %s\n", _primary); | |
| 1679 if (_secondary != NULL) fprintf(fp,"Secondary opcode: %s\n", _secondary); | |
| 1680 if (_tertiary != NULL) fprintf(fp,"Tertiary opcode: %s\n", _tertiary); | |
| 1681 } | |
| 1682 | |
| 1683 //------------------------------InsEncode-------------------------------------- | |
| 1684 InsEncode::InsEncode() { | |
| 1685 } | |
| 1686 InsEncode::~InsEncode() { | |
| 1687 } | |
| 1688 | |
| 1689 // Add "encode class name" and its parameters | |
| 1690 NameAndList *InsEncode::add_encode(char *encoding) { | |
| 1691 assert( encoding != NULL, "Must provide name for encoding"); | |
| 1692 | |
| 1693 // add_parameter(NameList::_signal); | |
| 1694 NameAndList *encode = new NameAndList(encoding); | |
| 1695 _encoding.addName((char*)encode); | |
| 1696 | |
| 1697 return encode; | |
| 1698 } | |
| 1699 | |
| 1700 // Access the list of encodings | |
| 1701 void InsEncode::reset() { | |
| 1702 _encoding.reset(); | |
| 1703 // _parameter.reset(); | |
| 1704 } | |
| 1705 const char* InsEncode::encode_class_iter() { | |
| 1706 NameAndList *encode_class = (NameAndList*)_encoding.iter(); | |
| 1707 return ( encode_class != NULL ? encode_class->name() : NULL ); | |
| 1708 } | |
| 1709 // Obtain parameter name from zero based index | |
| 1710 const char *InsEncode::rep_var_name(InstructForm &inst, uint param_no) { | |
| 1711 NameAndList *params = (NameAndList*)_encoding.current(); | |
| 1712 assert( params != NULL, "Internal Error"); | |
| 1713 const char *param = (*params)[param_no]; | |
| 1714 | |
| 1715 // Remove '$' if parser placed it there. | |
| 1716 return ( param != NULL && *param == '$') ? (param+1) : param; | |
| 1717 } | |
| 1718 | |
| 1719 void InsEncode::dump() { | |
| 1720 output(stderr); | |
| 1721 } | |
| 1722 | |
| 1723 // Write info to output files | |
| 1724 void InsEncode::output(FILE *fp) { | |
| 1725 NameAndList *encoding = NULL; | |
| 1726 const char *parameter = NULL; | |
| 1727 | |
| 1728 fprintf(fp,"InsEncode: "); | |
| 1729 _encoding.reset(); | |
| 1730 | |
| 1731 while ( (encoding = (NameAndList*)_encoding.iter()) != 0 ) { | |
| 1732 // Output the encoding being used | |
| 1733 fprintf(fp,"%s(", encoding->name() ); | |
| 1734 | |
| 1735 // Output its parameter list, if any | |
| 1736 bool first_param = true; | |
| 1737 encoding->reset(); | |
| 1738 while ( (parameter = encoding->iter()) != 0 ) { | |
| 1739 // Output the ',' between parameters | |
| 1740 if ( ! first_param ) fprintf(fp,", "); | |
| 1741 first_param = false; | |
| 1742 // Output the parameter | |
| 1743 fprintf(fp,"%s", parameter); | |
| 1744 } // done with parameters | |
| 1745 fprintf(fp,") "); | |
| 1746 } // done with encodings | |
| 1747 | |
| 1748 fprintf(fp,"\n"); | |
| 1749 } | |
| 1750 | |
| 1751 //------------------------------Effect----------------------------------------- | |
| 1752 static int effect_lookup(const char *name) { | |
| 1753 if(!strcmp(name, "USE")) return Component::USE; | |
| 1754 if(!strcmp(name, "DEF")) return Component::DEF; | |
| 1755 if(!strcmp(name, "USE_DEF")) return Component::USE_DEF; | |
| 1756 if(!strcmp(name, "KILL")) return Component::KILL; | |
| 1757 if(!strcmp(name, "USE_KILL")) return Component::USE_KILL; | |
| 1758 if(!strcmp(name, "TEMP")) return Component::TEMP; | |
| 1759 if(!strcmp(name, "INVALID")) return Component::INVALID; | |
|
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1760 if(!strcmp(name, "CALL")) return Component::CALL; |
| 0 | 1761 assert( false,"Invalid effect name specified\n"); |
| 1762 return Component::INVALID; | |
| 1763 } | |
| 1764 | |
| 1765 Effect::Effect(const char *name) : _name(name), _use_def(effect_lookup(name)) { | |
| 1766 _ftype = Form::EFF; | |
| 1767 } | |
| 1768 Effect::~Effect() { | |
| 1769 } | |
| 1770 | |
| 1771 // Dynamic type check | |
| 1772 Effect *Effect::is_effect() const { | |
| 1773 return (Effect*)this; | |
| 1774 } | |
| 1775 | |
| 1776 | |
| 1777 // True if this component is equal to the parameter. | |
| 1778 bool Effect::is(int use_def_kill_enum) const { | |
| 1779 return (_use_def == use_def_kill_enum ? true : false); | |
| 1780 } | |
| 1781 // True if this component is used/def'd/kill'd as the parameter suggests. | |
| 1782 bool Effect::isa(int use_def_kill_enum) const { | |
| 1783 return (_use_def & use_def_kill_enum) == use_def_kill_enum; | |
| 1784 } | |
| 1785 | |
| 1786 void Effect::dump() { | |
| 1787 output(stderr); | |
| 1788 } | |
| 1789 | |
| 1790 void Effect::output(FILE *fp) { // Write info to output files | |
| 1791 fprintf(fp,"Effect: %s\n", (_name?_name:"")); | |
| 1792 } | |
| 1793 | |
| 1794 //------------------------------ExpandRule------------------------------------- | |
| 1795 ExpandRule::ExpandRule() : _expand_instrs(), | |
| 1796 _newopconst(cmpstr, hashstr, Form::arena) { | |
| 1797 _ftype = Form::EXP; | |
| 1798 } | |
| 1799 | |
| 1800 ExpandRule::~ExpandRule() { // Destructor | |
| 1801 } | |
| 1802 | |
| 1803 void ExpandRule::add_instruction(NameAndList *instruction_name_and_operand_list) { | |
| 1804 _expand_instrs.addName((char*)instruction_name_and_operand_list); | |
| 1805 } | |
| 1806 | |
| 1807 void ExpandRule::reset_instructions() { | |
| 1808 _expand_instrs.reset(); | |
| 1809 } | |
| 1810 | |
| 1811 NameAndList* ExpandRule::iter_instructions() { | |
| 1812 return (NameAndList*)_expand_instrs.iter(); | |
| 1813 } | |
| 1814 | |
| 1815 | |
| 1816 void ExpandRule::dump() { | |
| 1817 output(stderr); | |
| 1818 } | |
| 1819 | |
| 1820 void ExpandRule::output(FILE *fp) { // Write info to output files | |
| 1821 NameAndList *expand_instr = NULL; | |
| 1822 const char *opid = NULL; | |
| 1823 | |
| 1824 fprintf(fp,"\nExpand Rule:\n"); | |
| 1825 | |
| 1826 // Iterate over the instructions 'node' expands into | |
| 1827 for(reset_instructions(); (expand_instr = iter_instructions()) != NULL; ) { | |
| 1828 fprintf(fp,"%s(", expand_instr->name()); | |
| 1829 | |
| 1830 // iterate over the operand list | |
| 1831 for( expand_instr->reset(); (opid = expand_instr->iter()) != NULL; ) { | |
| 1832 fprintf(fp,"%s ", opid); | |
| 1833 } | |
| 1834 fprintf(fp,");\n"); | |
| 1835 } | |
| 1836 } | |
| 1837 | |
| 1838 //------------------------------RewriteRule------------------------------------ | |
| 1839 RewriteRule::RewriteRule(char* params, char* block) | |
| 1840 : _tempParams(params), _tempBlock(block) { }; // Constructor | |
| 1841 RewriteRule::~RewriteRule() { // Destructor | |
| 1842 } | |
| 1843 | |
| 1844 void RewriteRule::dump() { | |
| 1845 output(stderr); | |
| 1846 } | |
| 1847 | |
| 1848 void RewriteRule::output(FILE *fp) { // Write info to output files | |
| 1849 fprintf(fp,"\nRewrite Rule:\n%s\n%s\n", | |
| 1850 (_tempParams?_tempParams:""), | |
| 1851 (_tempBlock?_tempBlock:"")); | |
| 1852 } | |
| 1853 | |
| 1854 | |
| 1855 //==============================MachNodes====================================== | |
| 1856 //------------------------------MachNodeForm----------------------------------- | |
| 1857 MachNodeForm::MachNodeForm(char *id) | |
| 1858 : _ident(id) { | |
| 1859 } | |
| 1860 | |
| 1861 MachNodeForm::~MachNodeForm() { | |
| 1862 } | |
| 1863 | |
| 1864 MachNodeForm *MachNodeForm::is_machnode() const { | |
| 1865 return (MachNodeForm*)this; | |
| 1866 } | |
| 1867 | |
| 1868 //==============================Operand Classes================================ | |
| 1869 //------------------------------OpClassForm------------------------------------ | |
| 1870 OpClassForm::OpClassForm(const char* id) : _ident(id) { | |
| 1871 _ftype = Form::OPCLASS; | |
| 1872 } | |
| 1873 | |
| 1874 OpClassForm::~OpClassForm() { | |
| 1875 } | |
| 1876 | |
| 1877 bool OpClassForm::ideal_only() const { return 0; } | |
| 1878 | |
| 1879 OpClassForm *OpClassForm::is_opclass() const { | |
| 1880 return (OpClassForm*)this; | |
| 1881 } | |
| 1882 | |
| 1883 Form::InterfaceType OpClassForm::interface_type(FormDict &globals) const { | |
| 1884 if( _oplst.count() == 0 ) return Form::no_interface; | |
| 1885 | |
| 1886 // Check that my operands have the same interface type | |
| 1887 Form::InterfaceType interface; | |
| 1888 bool first = true; | |
| 1889 NameList &op_list = (NameList &)_oplst; | |
| 1890 op_list.reset(); | |
| 1891 const char *op_name; | |
| 1892 while( (op_name = op_list.iter()) != NULL ) { | |
| 1893 const Form *form = globals[op_name]; | |
| 1894 OperandForm *operand = form->is_operand(); | |
| 1895 assert( operand, "Entry in operand class that is not an operand"); | |
| 1896 if( first ) { | |
| 1897 first = false; | |
| 1898 interface = operand->interface_type(globals); | |
| 1899 } else { | |
| 1900 interface = (interface == operand->interface_type(globals) ? interface : Form::no_interface); | |
| 1901 } | |
| 1902 } | |
| 1903 return interface; | |
| 1904 } | |
| 1905 | |
| 1906 bool OpClassForm::stack_slots_only(FormDict &globals) const { | |
| 1907 if( _oplst.count() == 0 ) return false; // how? | |
| 1908 | |
| 1909 NameList &op_list = (NameList &)_oplst; | |
| 1910 op_list.reset(); | |
| 1911 const char *op_name; | |
| 1912 while( (op_name = op_list.iter()) != NULL ) { | |
| 1913 const Form *form = globals[op_name]; | |
| 1914 OperandForm *operand = form->is_operand(); | |
| 1915 assert( operand, "Entry in operand class that is not an operand"); | |
| 1916 if( !operand->stack_slots_only(globals) ) return false; | |
| 1917 } | |
| 1918 return true; | |
| 1919 } | |
| 1920 | |
| 1921 | |
| 1922 void OpClassForm::dump() { | |
| 1923 output(stderr); | |
| 1924 } | |
| 1925 | |
| 1926 void OpClassForm::output(FILE *fp) { | |
| 1927 const char *name; | |
| 1928 fprintf(fp,"\nOperand Class: %s\n", (_ident?_ident:"")); | |
| 1929 fprintf(fp,"\nCount = %d\n", _oplst.count()); | |
| 1930 for(_oplst.reset(); (name = _oplst.iter()) != NULL;) { | |
| 1931 fprintf(fp,"%s, ",name); | |
| 1932 } | |
| 1933 fprintf(fp,"\n"); | |
| 1934 } | |
| 1935 | |
| 1936 | |
| 1937 //==============================Operands======================================= | |
| 1938 //------------------------------OperandForm------------------------------------ | |
| 1939 OperandForm::OperandForm(const char* id) | |
| 1940 : OpClassForm(id), _ideal_only(false), | |
| 1941 _localNames(cmpstr, hashstr, Form::arena) { | |
| 1942 _ftype = Form::OPER; | |
| 1943 | |
| 1944 _matrule = NULL; | |
| 1945 _interface = NULL; | |
| 1946 _attribs = NULL; | |
| 1947 _predicate = NULL; | |
| 1948 _constraint= NULL; | |
| 1949 _construct = NULL; | |
| 1950 _format = NULL; | |
| 1951 } | |
| 1952 OperandForm::OperandForm(const char* id, bool ideal_only) | |
| 1953 : OpClassForm(id), _ideal_only(ideal_only), | |
| 1954 _localNames(cmpstr, hashstr, Form::arena) { | |
| 1955 _ftype = Form::OPER; | |
| 1956 | |
| 1957 _matrule = NULL; | |
| 1958 _interface = NULL; | |
| 1959 _attribs = NULL; | |
| 1960 _predicate = NULL; | |
| 1961 _constraint= NULL; | |
| 1962 _construct = NULL; | |
| 1963 _format = NULL; | |
| 1964 } | |
| 1965 OperandForm::~OperandForm() { | |
| 1966 } | |
| 1967 | |
| 1968 | |
| 1969 OperandForm *OperandForm::is_operand() const { | |
| 1970 return (OperandForm*)this; | |
| 1971 } | |
| 1972 | |
| 1973 bool OperandForm::ideal_only() const { | |
| 1974 return _ideal_only; | |
| 1975 } | |
| 1976 | |
| 1977 Form::InterfaceType OperandForm::interface_type(FormDict &globals) const { | |
| 1978 if( _interface == NULL ) return Form::no_interface; | |
| 1979 | |
| 1980 return _interface->interface_type(globals); | |
| 1981 } | |
| 1982 | |
| 1983 | |
| 1984 bool OperandForm::stack_slots_only(FormDict &globals) const { | |
| 1985 if( _constraint == NULL ) return false; | |
| 1986 return _constraint->stack_slots_only(); | |
| 1987 } | |
| 1988 | |
| 1989 | |
| 1990 // Access op_cost attribute or return NULL. | |
| 1991 const char* OperandForm::cost() { | |
| 1992 for (Attribute* cur = _attribs; cur != NULL; cur = (Attribute*)cur->_next) { | |
| 1993 if( strcmp(cur->_ident,AttributeForm::_op_cost) == 0 ) { | |
| 1994 return cur->_val; | |
| 1995 } | |
| 1996 } | |
| 1997 return NULL; | |
| 1998 } | |
| 1999 | |
| 2000 // Return the number of leaves below this complex operand | |
| 2001 uint OperandForm::num_leaves() const { | |
| 2002 if ( ! _matrule) return 0; | |
| 2003 | |
| 2004 int num_leaves = _matrule->_numleaves; | |
| 2005 return num_leaves; | |
| 2006 } | |
| 2007 | |
| 2008 // Return the number of constants contained within this complex operand | |
| 2009 uint OperandForm::num_consts(FormDict &globals) const { | |
| 2010 if ( ! _matrule) return 0; | |
| 2011 | |
| 2012 // This is a recursive invocation on all operands in the matchrule | |
| 2013 return _matrule->num_consts(globals); | |
| 2014 } | |
| 2015 | |
| 2016 // Return the number of constants in match rule with specified type | |
| 2017 uint OperandForm::num_consts(FormDict &globals, Form::DataType type) const { | |
| 2018 if ( ! _matrule) return 0; | |
| 2019 | |
| 2020 // This is a recursive invocation on all operands in the matchrule | |
| 2021 return _matrule->num_consts(globals, type); | |
| 2022 } | |
| 2023 | |
| 2024 // Return the number of pointer constants contained within this complex operand | |
| 2025 uint OperandForm::num_const_ptrs(FormDict &globals) const { | |
| 2026 if ( ! _matrule) return 0; | |
| 2027 | |
| 2028 // This is a recursive invocation on all operands in the matchrule | |
| 2029 return _matrule->num_const_ptrs(globals); | |
| 2030 } | |
| 2031 | |
| 2032 uint OperandForm::num_edges(FormDict &globals) const { | |
| 2033 uint edges = 0; | |
| 2034 uint leaves = num_leaves(); | |
| 2035 uint consts = num_consts(globals); | |
| 2036 | |
| 2037 // If we are matching a constant directly, there are no leaves. | |
| 2038 edges = ( leaves > consts ) ? leaves - consts : 0; | |
| 2039 | |
| 2040 // !!!!! | |
| 2041 // Special case operands that do not have a corresponding ideal node. | |
| 2042 if( (edges == 0) && (consts == 0) ) { | |
| 2043 if( constrained_reg_class() != NULL ) { | |
| 2044 edges = 1; | |
| 2045 } else { | |
| 2046 if( _matrule | |
| 2047 && (_matrule->_lChild == NULL) && (_matrule->_rChild == NULL) ) { | |
| 2048 const Form *form = globals[_matrule->_opType]; | |
| 2049 OperandForm *oper = form ? form->is_operand() : NULL; | |
| 2050 if( oper ) { | |
| 2051 return oper->num_edges(globals); | |
| 2052 } | |
| 2053 } | |
| 2054 } | |
| 2055 } | |
| 2056 | |
| 2057 return edges; | |
| 2058 } | |
| 2059 | |
| 2060 | |
| 2061 // Check if this operand is usable for cisc-spilling | |
| 2062 bool OperandForm::is_cisc_reg(FormDict &globals) const { | |
| 2063 const char *ideal = ideal_type(globals); | |
| 2064 bool is_cisc_reg = (ideal && (ideal_to_Reg_type(ideal) != none)); | |
| 2065 return is_cisc_reg; | |
| 2066 } | |
| 2067 | |
| 2068 bool OpClassForm::is_cisc_mem(FormDict &globals) const { | |
| 2069 Form::InterfaceType my_interface = interface_type(globals); | |
| 2070 return (my_interface == memory_interface); | |
| 2071 } | |
| 2072 | |
| 2073 | |
| 2074 // node matches ideal 'Bool' | |
| 2075 bool OperandForm::is_ideal_bool() const { | |
| 2076 if( _matrule == NULL ) return false; | |
| 2077 | |
| 2078 return _matrule->is_ideal_bool(); | |
| 2079 } | |
| 2080 | |
| 2081 // Require user's name for an sRegX to be stackSlotX | |
| 2082 Form::DataType OperandForm::is_user_name_for_sReg() const { | |
| 2083 DataType data_type = none; | |
| 2084 if( _ident != NULL ) { | |
| 2085 if( strcmp(_ident,"stackSlotI") == 0 ) data_type = Form::idealI; | |
| 2086 else if( strcmp(_ident,"stackSlotP") == 0 ) data_type = Form::idealP; | |
| 2087 else if( strcmp(_ident,"stackSlotD") == 0 ) data_type = Form::idealD; | |
| 2088 else if( strcmp(_ident,"stackSlotF") == 0 ) data_type = Form::idealF; | |
| 2089 else if( strcmp(_ident,"stackSlotL") == 0 ) data_type = Form::idealL; | |
| 2090 } | |
| 2091 assert((data_type == none) || (_matrule == NULL), "No match-rule for stackSlotX"); | |
| 2092 | |
| 2093 return data_type; | |
| 2094 } | |
| 2095 | |
| 2096 | |
| 2097 // Return ideal type, if there is a single ideal type for this operand | |
| 2098 const char *OperandForm::ideal_type(FormDict &globals, RegisterForm *registers) const { | |
| 2099 const char *type = NULL; | |
| 2100 if (ideal_only()) type = _ident; | |
| 2101 else if( _matrule == NULL ) { | |
| 2102 // Check for condition code register | |
| 2103 const char *rc_name = constrained_reg_class(); | |
| 2104 // !!!!! | |
| 2105 if (rc_name == NULL) return NULL; | |
| 2106 // !!!!! !!!!! | |
| 2107 // Check constraints on result's register class | |
| 2108 if( registers ) { | |
| 2109 RegClass *reg_class = registers->getRegClass(rc_name); | |
| 2110 assert( reg_class != NULL, "Register class is not defined"); | |
| 2111 | |
| 2112 // Check for ideal type of entries in register class, all are the same type | |
| 2113 reg_class->reset(); | |
| 2114 RegDef *reg_def = reg_class->RegDef_iter(); | |
| 2115 assert( reg_def != NULL, "No entries in register class"); | |
| 2116 assert( reg_def->_idealtype != NULL, "Did not define ideal type for register"); | |
| 2117 // Return substring that names the register's ideal type | |
| 2118 type = reg_def->_idealtype + 3; | |
| 2119 assert( *(reg_def->_idealtype + 0) == 'O', "Expect Op_ prefix"); | |
| 2120 assert( *(reg_def->_idealtype + 1) == 'p', "Expect Op_ prefix"); | |
| 2121 assert( *(reg_def->_idealtype + 2) == '_', "Expect Op_ prefix"); | |
| 2122 } | |
| 2123 } | |
| 2124 else if( _matrule->_lChild == NULL && _matrule->_rChild == NULL ) { | |
| 2125 // This operand matches a single type, at the top level. | |
| 2126 // Check for ideal type | |
| 2127 type = _matrule->_opType; | |
| 2128 if( strcmp(type,"Bool") == 0 ) | |
| 2129 return "Bool"; | |
| 2130 // transitive lookup | |
| 2131 const Form *frm = globals[type]; | |
| 2132 OperandForm *op = frm->is_operand(); | |
| 2133 type = op->ideal_type(globals, registers); | |
| 2134 } | |
| 2135 return type; | |
| 2136 } | |
| 2137 | |
| 2138 | |
| 2139 // If there is a single ideal type for this interface field, return it. | |
| 2140 const char *OperandForm::interface_ideal_type(FormDict &globals, | |
| 2141 const char *field) const { | |
| 2142 const char *ideal_type = NULL; | |
| 2143 const char *value = NULL; | |
| 2144 | |
| 2145 // Check if "field" is valid for this operand's interface | |
| 2146 if ( ! is_interface_field(field, value) ) return ideal_type; | |
| 2147 | |
| 2148 // !!!!! !!!!! !!!!! | |
| 2149 // If a valid field has a constant value, identify "ConI" or "ConP" or ... | |
| 2150 | |
| 2151 // Else, lookup type of field's replacement variable | |
| 2152 | |
| 2153 return ideal_type; | |
| 2154 } | |
| 2155 | |
| 2156 | |
| 2157 RegClass* OperandForm::get_RegClass() const { | |
| 2158 if (_interface && !_interface->is_RegInterface()) return NULL; | |
| 2159 return globalAD->get_registers()->getRegClass(constrained_reg_class()); | |
| 2160 } | |
| 2161 | |
| 2162 | |
| 2163 bool OperandForm::is_bound_register() const { | |
| 2164 RegClass *reg_class = get_RegClass(); | |
| 2165 if (reg_class == NULL) return false; | |
| 2166 | |
| 2167 const char * name = ideal_type(globalAD->globalNames()); | |
| 2168 if (name == NULL) return false; | |
| 2169 | |
| 2170 int size = 0; | |
| 2171 if (strcmp(name,"RegFlags")==0) size = 1; | |
| 2172 if (strcmp(name,"RegI")==0) size = 1; | |
| 2173 if (strcmp(name,"RegF")==0) size = 1; | |
| 2174 if (strcmp(name,"RegD")==0) size = 2; | |
| 2175 if (strcmp(name,"RegL")==0) size = 2; | |
|
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|
2176 if (strcmp(name,"RegN")==0) size = 1; |
| 0 | 2177 if (strcmp(name,"RegP")==0) size = globalAD->get_preproc_def("_LP64") ? 2 : 1; |
| 2178 if (size == 0) return false; | |
| 2179 return size == reg_class->size(); | |
| 2180 } | |
| 2181 | |
| 2182 | |
| 2183 // Check if this is a valid field for this operand, | |
| 2184 // Return 'true' if valid, and set the value to the string the user provided. | |
| 2185 bool OperandForm::is_interface_field(const char *field, | |
| 2186 const char * &value) const { | |
| 2187 return false; | |
| 2188 } | |
| 2189 | |
| 2190 | |
| 2191 // Return register class name if a constraint specifies the register class. | |
| 2192 const char *OperandForm::constrained_reg_class() const { | |
| 2193 const char *reg_class = NULL; | |
| 2194 if ( _constraint ) { | |
| 2195 // !!!!! | |
| 2196 Constraint *constraint = _constraint; | |
| 2197 if ( strcmp(_constraint->_func,"ALLOC_IN_RC") == 0 ) { | |
| 2198 reg_class = _constraint->_arg; | |
| 2199 } | |
| 2200 } | |
| 2201 | |
| 2202 return reg_class; | |
| 2203 } | |
| 2204 | |
| 2205 | |
| 2206 // Return the register class associated with 'leaf'. | |
| 2207 const char *OperandForm::in_reg_class(uint leaf, FormDict &globals) { | |
| 2208 const char *reg_class = NULL; // "RegMask::Empty"; | |
| 2209 | |
| 2210 if((_matrule == NULL) || (_matrule->is_chain_rule(globals))) { | |
| 2211 reg_class = constrained_reg_class(); | |
| 2212 return reg_class; | |
| 2213 } | |
| 2214 const char *result = NULL; | |
| 2215 const char *name = NULL; | |
| 2216 const char *type = NULL; | |
| 2217 // iterate through all base operands | |
| 2218 // until we reach the register that corresponds to "leaf" | |
| 2219 // This function is not looking for an ideal type. It needs the first | |
| 2220 // level user type associated with the leaf. | |
| 2221 for(uint idx = 0;_matrule->base_operand(idx,globals,result,name,type);++idx) { | |
| 2222 const Form *form = (_localNames[name] ? _localNames[name] : globals[result]); | |
| 2223 OperandForm *oper = form ? form->is_operand() : NULL; | |
| 2224 if( oper ) { | |
| 2225 reg_class = oper->constrained_reg_class(); | |
| 2226 if( reg_class ) { | |
| 2227 reg_class = reg_class; | |
| 2228 } else { | |
| 2229 // ShouldNotReachHere(); | |
| 2230 } | |
| 2231 } else { | |
| 2232 // ShouldNotReachHere(); | |
| 2233 } | |
| 2234 | |
| 2235 // Increment our target leaf position if current leaf is not a candidate. | |
| 2236 if( reg_class == NULL) ++leaf; | |
| 2237 // Exit the loop with the value of reg_class when at the correct index | |
| 2238 if( idx == leaf ) break; | |
| 2239 // May iterate through all base operands if reg_class for 'leaf' is NULL | |
| 2240 } | |
| 2241 return reg_class; | |
| 2242 } | |
| 2243 | |
| 2244 | |
| 2245 // Recursive call to construct list of top-level operands. | |
| 2246 // Implementation does not modify state of internal structures | |
| 2247 void OperandForm::build_components() { | |
| 2248 if (_matrule) _matrule->append_components(_localNames, _components); | |
| 2249 | |
| 2250 // Add parameters that "do not appear in match rule". | |
| 2251 const char *name; | |
| 2252 for (_parameters.reset(); (name = _parameters.iter()) != NULL;) { | |
| 2253 OperandForm *opForm = (OperandForm*)_localNames[name]; | |
| 2254 | |
| 2255 if ( _components.operand_position(name) == -1 ) { | |
| 2256 _components.insert(name, opForm->_ident, Component::INVALID, false); | |
| 2257 } | |
| 2258 } | |
| 2259 | |
| 2260 return; | |
| 2261 } | |
| 2262 | |
| 2263 int OperandForm::operand_position(const char *name, int usedef) { | |
| 2264 return _components.operand_position(name, usedef); | |
| 2265 } | |
| 2266 | |
| 2267 | |
| 2268 // Return zero-based position in component list, only counting constants; | |
| 2269 // Return -1 if not in list. | |
| 2270 int OperandForm::constant_position(FormDict &globals, const Component *last) { | |
| 605 | 2271 // Iterate through components and count constants preceding 'constant' |
|
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|
2272 int position = 0; |
| 0 | 2273 Component *comp; |
| 2274 _components.reset(); | |
| 2275 while( (comp = _components.iter()) != NULL && (comp != last) ) { | |
| 2276 // Special case for operands that take a single user-defined operand | |
| 2277 // Skip the initial definition in the component list. | |
| 2278 if( strcmp(comp->_name,this->_ident) == 0 ) continue; | |
| 2279 | |
| 2280 const char *type = comp->_type; | |
| 2281 // Lookup operand form for replacement variable's type | |
| 2282 const Form *form = globals[type]; | |
| 2283 assert( form != NULL, "Component's type not found"); | |
| 2284 OperandForm *oper = form ? form->is_operand() : NULL; | |
| 2285 if( oper ) { | |
| 2286 if( oper->_matrule->is_base_constant(globals) != Form::none ) { | |
| 2287 ++position; | |
| 2288 } | |
| 2289 } | |
| 2290 } | |
| 2291 | |
| 2292 // Check for being passed a component that was not in the list | |
| 2293 if( comp != last ) position = -1; | |
| 2294 | |
| 2295 return position; | |
| 2296 } | |
| 2297 // Provide position of constant by "name" | |
| 2298 int OperandForm::constant_position(FormDict &globals, const char *name) { | |
| 2299 const Component *comp = _components.search(name); | |
| 2300 int idx = constant_position( globals, comp ); | |
| 2301 | |
| 2302 return idx; | |
| 2303 } | |
| 2304 | |
| 2305 | |
| 2306 // Return zero-based position in component list, only counting constants; | |
| 2307 // Return -1 if not in list. | |
| 2308 int OperandForm::register_position(FormDict &globals, const char *reg_name) { | |
| 605 | 2309 // Iterate through components and count registers preceding 'last' |
| 0 | 2310 uint position = 0; |
| 2311 Component *comp; | |
| 2312 _components.reset(); | |
| 2313 while( (comp = _components.iter()) != NULL | |
| 2314 && (strcmp(comp->_name,reg_name) != 0) ) { | |
| 2315 // Special case for operands that take a single user-defined operand | |
| 2316 // Skip the initial definition in the component list. | |
| 2317 if( strcmp(comp->_name,this->_ident) == 0 ) continue; | |
| 2318 | |
| 2319 const char *type = comp->_type; | |
| 2320 // Lookup operand form for component's type | |
| 2321 const Form *form = globals[type]; | |
| 2322 assert( form != NULL, "Component's type not found"); | |
| 2323 OperandForm *oper = form ? form->is_operand() : NULL; | |
| 2324 if( oper ) { | |
| 2325 if( oper->_matrule->is_base_register(globals) ) { | |
| 2326 ++position; | |
| 2327 } | |
| 2328 } | |
| 2329 } | |
| 2330 | |
| 2331 return position; | |
| 2332 } | |
| 2333 | |
| 2334 | |
| 2335 const char *OperandForm::reduce_result() const { | |
| 2336 return _ident; | |
| 2337 } | |
| 2338 // Return the name of the operand on the right hand side of the binary match | |
| 2339 // Return NULL if there is no right hand side | |
| 2340 const char *OperandForm::reduce_right(FormDict &globals) const { | |
| 2341 return ( _matrule ? _matrule->reduce_right(globals) : NULL ); | |
| 2342 } | |
| 2343 | |
| 2344 // Similar for left | |
| 2345 const char *OperandForm::reduce_left(FormDict &globals) const { | |
| 2346 return ( _matrule ? _matrule->reduce_left(globals) : NULL ); | |
| 2347 } | |
| 2348 | |
| 2349 | |
| 2350 // --------------------------- FILE *output_routines | |
| 2351 // | |
| 2352 // Output code for disp_is_oop, if true. | |
| 2353 void OperandForm::disp_is_oop(FILE *fp, FormDict &globals) { | |
| 2354 // Check it is a memory interface with a non-user-constant disp field | |
| 2355 if ( this->_interface == NULL ) return; | |
| 2356 MemInterface *mem_interface = this->_interface->is_MemInterface(); | |
| 2357 if ( mem_interface == NULL ) return; | |
| 2358 const char *disp = mem_interface->_disp; | |
| 2359 if ( *disp != '$' ) return; | |
| 2360 | |
| 2361 // Lookup replacement variable in operand's component list | |
| 2362 const char *rep_var = disp + 1; | |
| 2363 const Component *comp = this->_components.search(rep_var); | |
| 2364 assert( comp != NULL, "Replacement variable not found in components"); | |
| 2365 // Lookup operand form for replacement variable's type | |
| 2366 const char *type = comp->_type; | |
| 2367 Form *form = (Form*)globals[type]; | |
| 2368 assert( form != NULL, "Replacement variable's type not found"); | |
| 2369 OperandForm *op = form->is_operand(); | |
| 2370 assert( op, "Memory Interface 'disp' can only emit an operand form"); | |
| 2371 // Check if this is a ConP, which may require relocation | |
| 2372 if ( op->is_base_constant(globals) == Form::idealP ) { | |
| 2373 // Find the constant's index: _c0, _c1, _c2, ... , _cN | |
| 2374 uint idx = op->constant_position( globals, rep_var); | |
|
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|
2375 fprintf(fp," virtual bool disp_is_oop() const {"); |
| 0 | 2376 fprintf(fp, " return _c%d->isa_oop_ptr();", idx); |
| 2377 fprintf(fp, " }\n"); | |
| 2378 } | |
| 2379 } | |
| 2380 | |
| 2381 // Generate code for internal and external format methods | |
| 2382 // | |
| 2383 // internal access to reg# node->_idx | |
| 2384 // access to subsumed constant _c0, _c1, | |
| 2385 void OperandForm::int_format(FILE *fp, FormDict &globals, uint index) { | |
| 2386 Form::DataType dtype; | |
| 2387 if (_matrule && (_matrule->is_base_register(globals) || | |
| 2388 strcmp(ideal_type(globalAD->globalNames()), "RegFlags") == 0)) { | |
| 2389 // !!!!! !!!!! | |
| 2390 fprintf(fp, "{ char reg_str[128];\n"); | |
| 2391 fprintf(fp," ra->dump_register(node,reg_str);\n"); | |
| 2392 fprintf(fp," tty->print(\"%cs\",reg_str);\n",'%'); | |
| 2393 fprintf(fp," }\n"); | |
| 2394 } else if (_matrule && (dtype = _matrule->is_base_constant(globals)) != Form::none) { | |
| 2395 format_constant( fp, index, dtype ); | |
| 2396 } else if (ideal_to_sReg_type(_ident) != Form::none) { | |
| 2397 // Special format for Stack Slot Register | |
| 2398 fprintf(fp, "{ char reg_str[128];\n"); | |
| 2399 fprintf(fp," ra->dump_register(node,reg_str);\n"); | |
| 2400 fprintf(fp," tty->print(\"%cs\",reg_str);\n",'%'); | |
| 2401 fprintf(fp," }\n"); | |
| 2402 } else { | |
| 2403 fprintf(fp,"tty->print(\"No format defined for %s\n\");\n", _ident); | |
| 2404 fflush(fp); | |
| 2405 fprintf(stderr,"No format defined for %s\n", _ident); | |
| 2406 dump(); | |
| 2407 assert( false,"Internal error:\n output_internal_operand() attempting to output other than a Register or Constant"); | |
| 2408 } | |
| 2409 } | |
| 2410 | |
| 2411 // Similar to "int_format" but for cases where data is external to operand | |
| 2412 // external access to reg# node->in(idx)->_idx, | |
| 2413 void OperandForm::ext_format(FILE *fp, FormDict &globals, uint index) { | |
| 2414 Form::DataType dtype; | |
| 2415 if (_matrule && (_matrule->is_base_register(globals) || | |
| 2416 strcmp(ideal_type(globalAD->globalNames()), "RegFlags") == 0)) { | |
| 2417 fprintf(fp, "{ char reg_str[128];\n"); | |
| 2418 fprintf(fp," ra->dump_register(node->in(idx"); | |
| 2419 if ( index != 0 ) fprintf(fp, "+%d",index); | |
| 2420 fprintf(fp, "),reg_str);\n"); | |
| 2421 fprintf(fp," tty->print(\"%cs\",reg_str);\n",'%'); | |
| 2422 fprintf(fp," }\n"); | |
| 2423 } else if (_matrule && (dtype = _matrule->is_base_constant(globals)) != Form::none) { | |
| 2424 format_constant( fp, index, dtype ); | |
| 2425 } else if (ideal_to_sReg_type(_ident) != Form::none) { | |
| 2426 // Special format for Stack Slot Register | |
| 2427 fprintf(fp, "{ char reg_str[128];\n"); | |
| 2428 fprintf(fp," ra->dump_register(node->in(idx"); | |
| 2429 if ( index != 0 ) fprintf(fp, "+%d",index); | |
| 2430 fprintf(fp, "),reg_str);\n"); | |
| 2431 fprintf(fp," tty->print(\"%cs\",reg_str);\n",'%'); | |
| 2432 fprintf(fp," }\n"); | |
| 2433 } else { | |
| 2434 fprintf(fp,"tty->print(\"No format defined for %s\n\");\n", _ident); | |
| 2435 assert( false,"Internal error:\n output_external_operand() attempting to output other than a Register or Constant"); | |
| 2436 } | |
| 2437 } | |
| 2438 | |
| 2439 void OperandForm::format_constant(FILE *fp, uint const_index, uint const_type) { | |
| 2440 switch(const_type) { | |
|
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2441 case Form::idealI: fprintf(fp,"st->print(\"#%%d\", _c%d);\n", const_index); break; |
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2442 case Form::idealP: fprintf(fp,"_c%d->dump_on(st);\n", const_index); break; |
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2443 case Form::idealN: fprintf(fp,"_c%d->dump_on(st);\n", const_index); break; |
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2444 case Form::idealL: fprintf(fp,"st->print(\"#%%lld\", _c%d);\n", const_index); break; |
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2445 case Form::idealF: fprintf(fp,"st->print(\"#%%f\", _c%d);\n", const_index); break; |
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2446 case Form::idealD: fprintf(fp,"st->print(\"#%%f\", _c%d);\n", const_index); break; |
| 0 | 2447 default: |
| 2448 assert( false, "ShouldNotReachHere()"); | |
| 2449 } | |
| 2450 } | |
| 2451 | |
| 2452 // Return the operand form corresponding to the given index, else NULL. | |
| 2453 OperandForm *OperandForm::constant_operand(FormDict &globals, | |
| 2454 uint index) { | |
| 2455 // !!!!! | |
| 2456 // Check behavior on complex operands | |
| 2457 uint n_consts = num_consts(globals); | |
| 2458 if( n_consts > 0 ) { | |
| 2459 uint i = 0; | |
| 2460 const char *type; | |
| 2461 Component *comp; | |
| 2462 _components.reset(); | |
| 2463 if ((comp = _components.iter()) == NULL) { | |
| 2464 assert(n_consts == 1, "Bad component list detected.\n"); | |
| 2465 // Current operand is THE operand | |
| 2466 if ( index == 0 ) { | |
| 2467 return this; | |
| 2468 } | |
| 2469 } // end if NULL | |
| 2470 else { | |
| 2471 // Skip the first component, it can not be a DEF of a constant | |
| 2472 do { | |
| 2473 type = comp->base_type(globals); | |
| 2474 // Check that "type" is a 'ConI', 'ConP', ... | |
| 2475 if ( ideal_to_const_type(type) != Form::none ) { | |
| 2476 // When at correct component, get corresponding Operand | |
| 2477 if ( index == 0 ) { | |
| 2478 return globals[comp->_type]->is_operand(); | |
| 2479 } | |
| 2480 // Decrement number of constants to go | |
| 2481 --index; | |
| 2482 } | |
| 2483 } while((comp = _components.iter()) != NULL); | |
| 2484 } | |
| 2485 } | |
| 2486 | |
| 2487 // Did not find a constant for this index. | |
| 2488 return NULL; | |
| 2489 } | |
| 2490 | |
| 2491 // If this operand has a single ideal type, return its type | |
| 2492 Form::DataType OperandForm::simple_type(FormDict &globals) const { | |
| 2493 const char *type_name = ideal_type(globals); | |
| 2494 Form::DataType type = type_name ? ideal_to_const_type( type_name ) | |
| 2495 : Form::none; | |
| 2496 return type; | |
| 2497 } | |
| 2498 | |
| 2499 Form::DataType OperandForm::is_base_constant(FormDict &globals) const { | |
| 2500 if ( _matrule == NULL ) return Form::none; | |
| 2501 | |
| 2502 return _matrule->is_base_constant(globals); | |
| 2503 } | |
| 2504 | |
| 2505 // "true" if this operand is a simple type that is swallowed | |
| 2506 bool OperandForm::swallowed(FormDict &globals) const { | |
| 2507 Form::DataType type = simple_type(globals); | |
| 2508 if( type != Form::none ) { | |
| 2509 return true; | |
| 2510 } | |
| 2511 | |
| 2512 return false; | |
| 2513 } | |
| 2514 | |
| 2515 // Output code to access the value of the index'th constant | |
| 2516 void OperandForm::access_constant(FILE *fp, FormDict &globals, | |
| 2517 uint const_index) { | |
| 2518 OperandForm *oper = constant_operand(globals, const_index); | |
| 2519 assert( oper, "Index exceeds number of constants in operand"); | |
| 2520 Form::DataType dtype = oper->is_base_constant(globals); | |
| 2521 | |
| 2522 switch(dtype) { | |
| 2523 case idealI: fprintf(fp,"_c%d", const_index); break; | |
| 2524 case idealP: fprintf(fp,"_c%d->get_con()",const_index); break; | |
| 2525 case idealL: fprintf(fp,"_c%d", const_index); break; | |
| 2526 case idealF: fprintf(fp,"_c%d", const_index); break; | |
| 2527 case idealD: fprintf(fp,"_c%d", const_index); break; | |
| 2528 default: | |
| 2529 assert( false, "ShouldNotReachHere()"); | |
| 2530 } | |
| 2531 } | |
| 2532 | |
| 2533 | |
| 2534 void OperandForm::dump() { | |
| 2535 output(stderr); | |
| 2536 } | |
| 2537 | |
| 2538 void OperandForm::output(FILE *fp) { | |
| 2539 fprintf(fp,"\nOperand: %s\n", (_ident?_ident:"")); | |
| 2540 if (_matrule) _matrule->dump(); | |
| 2541 if (_interface) _interface->dump(); | |
| 2542 if (_attribs) _attribs->dump(); | |
| 2543 if (_predicate) _predicate->dump(); | |
| 2544 if (_constraint) _constraint->dump(); | |
| 2545 if (_construct) _construct->dump(); | |
| 2546 if (_format) _format->dump(); | |
| 2547 } | |
| 2548 | |
| 2549 //------------------------------Constraint------------------------------------- | |
| 2550 Constraint::Constraint(const char *func, const char *arg) | |
| 2551 : _func(func), _arg(arg) { | |
| 2552 } | |
| 2553 Constraint::~Constraint() { /* not owner of char* */ | |
| 2554 } | |
| 2555 | |
| 2556 bool Constraint::stack_slots_only() const { | |
| 2557 return strcmp(_func, "ALLOC_IN_RC") == 0 | |
| 2558 && strcmp(_arg, "stack_slots") == 0; | |
| 2559 } | |
| 2560 | |
| 2561 void Constraint::dump() { | |
| 2562 output(stderr); | |
| 2563 } | |
| 2564 | |
| 2565 void Constraint::output(FILE *fp) { // Write info to output files | |
| 2566 assert((_func != NULL && _arg != NULL),"missing constraint function or arg"); | |
| 2567 fprintf(fp,"Constraint: %s ( %s )\n", _func, _arg); | |
| 2568 } | |
| 2569 | |
| 2570 //------------------------------Predicate-------------------------------------- | |
| 2571 Predicate::Predicate(char *pr) | |
| 2572 : _pred(pr) { | |
| 2573 } | |
| 2574 Predicate::~Predicate() { | |
| 2575 } | |
| 2576 | |
| 2577 void Predicate::dump() { | |
| 2578 output(stderr); | |
| 2579 } | |
| 2580 | |
| 2581 void Predicate::output(FILE *fp) { | |
| 2582 fprintf(fp,"Predicate"); // Write to output files | |
| 2583 } | |
| 2584 //------------------------------Interface-------------------------------------- | |
| 2585 Interface::Interface(const char *name) : _name(name) { | |
| 2586 } | |
| 2587 Interface::~Interface() { | |
| 2588 } | |
| 2589 | |
| 2590 Form::InterfaceType Interface::interface_type(FormDict &globals) const { | |
| 2591 Interface *thsi = (Interface*)this; | |
| 2592 if ( thsi->is_RegInterface() ) return Form::register_interface; | |
| 2593 if ( thsi->is_MemInterface() ) return Form::memory_interface; | |
| 2594 if ( thsi->is_ConstInterface() ) return Form::constant_interface; | |
| 2595 if ( thsi->is_CondInterface() ) return Form::conditional_interface; | |
| 2596 | |
| 2597 return Form::no_interface; | |
| 2598 } | |
| 2599 | |
| 2600 RegInterface *Interface::is_RegInterface() { | |
| 2601 if ( strcmp(_name,"REG_INTER") != 0 ) | |
| 2602 return NULL; | |
| 2603 return (RegInterface*)this; | |
| 2604 } | |
| 2605 MemInterface *Interface::is_MemInterface() { | |
| 2606 if ( strcmp(_name,"MEMORY_INTER") != 0 ) return NULL; | |
| 2607 return (MemInterface*)this; | |
| 2608 } | |
| 2609 ConstInterface *Interface::is_ConstInterface() { | |
| 2610 if ( strcmp(_name,"CONST_INTER") != 0 ) return NULL; | |
| 2611 return (ConstInterface*)this; | |
| 2612 } | |
| 2613 CondInterface *Interface::is_CondInterface() { | |
| 2614 if ( strcmp(_name,"COND_INTER") != 0 ) return NULL; | |
| 2615 return (CondInterface*)this; | |
| 2616 } | |
| 2617 | |
| 2618 | |
| 2619 void Interface::dump() { | |
| 2620 output(stderr); | |
| 2621 } | |
| 2622 | |
| 2623 // Write info to output files | |
| 2624 void Interface::output(FILE *fp) { | |
| 2625 fprintf(fp,"Interface: %s\n", (_name ? _name : "") ); | |
| 2626 } | |
| 2627 | |
| 2628 //------------------------------RegInterface----------------------------------- | |
| 2629 RegInterface::RegInterface() : Interface("REG_INTER") { | |
| 2630 } | |
| 2631 RegInterface::~RegInterface() { | |
| 2632 } | |
| 2633 | |
| 2634 void RegInterface::dump() { | |
| 2635 output(stderr); | |
| 2636 } | |
| 2637 | |
| 2638 // Write info to output files | |
| 2639 void RegInterface::output(FILE *fp) { | |
| 2640 Interface::output(fp); | |
| 2641 } | |
| 2642 | |
| 2643 //------------------------------ConstInterface--------------------------------- | |
| 2644 ConstInterface::ConstInterface() : Interface("CONST_INTER") { | |
| 2645 } | |
| 2646 ConstInterface::~ConstInterface() { | |
| 2647 } | |
| 2648 | |
| 2649 void ConstInterface::dump() { | |
| 2650 output(stderr); | |
| 2651 } | |
| 2652 | |
| 2653 // Write info to output files | |
| 2654 void ConstInterface::output(FILE *fp) { | |
| 2655 Interface::output(fp); | |
| 2656 } | |
| 2657 | |
| 2658 //------------------------------MemInterface----------------------------------- | |
| 2659 MemInterface::MemInterface(char *base, char *index, char *scale, char *disp) | |
| 2660 : Interface("MEMORY_INTER"), _base(base), _index(index), _scale(scale), _disp(disp) { | |
| 2661 } | |
| 2662 MemInterface::~MemInterface() { | |
| 2663 // not owner of any character arrays | |
| 2664 } | |
| 2665 | |
| 2666 void MemInterface::dump() { | |
| 2667 output(stderr); | |
| 2668 } | |
| 2669 | |
| 2670 // Write info to output files | |
| 2671 void MemInterface::output(FILE *fp) { | |
| 2672 Interface::output(fp); | |
| 2673 if ( _base != NULL ) fprintf(fp," base == %s\n", _base); | |
| 2674 if ( _index != NULL ) fprintf(fp," index == %s\n", _index); | |
| 2675 if ( _scale != NULL ) fprintf(fp," scale == %s\n", _scale); | |
| 2676 if ( _disp != NULL ) fprintf(fp," disp == %s\n", _disp); | |
| 2677 // fprintf(fp,"\n"); | |
| 2678 } | |
| 2679 | |
| 2680 //------------------------------CondInterface---------------------------------- | |
|
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2681 CondInterface::CondInterface(const char* equal, const char* equal_format, |
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2682 const char* not_equal, const char* not_equal_format, |
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2683 const char* less, const char* less_format, |
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2684 const char* greater_equal, const char* greater_equal_format, |
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2685 const char* less_equal, const char* less_equal_format, |
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2686 const char* greater, const char* greater_format) |
| 0 | 2687 : Interface("COND_INTER"), |
|
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2688 _equal(equal), _equal_format(equal_format), |
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2689 _not_equal(not_equal), _not_equal_format(not_equal_format), |
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2690 _less(less), _less_format(less_format), |
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2691 _greater_equal(greater_equal), _greater_equal_format(greater_equal_format), |
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2692 _less_equal(less_equal), _less_equal_format(less_equal_format), |
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2693 _greater(greater), _greater_format(greater_format) { |
| 0 | 2694 } |
| 2695 CondInterface::~CondInterface() { | |
| 2696 // not owner of any character arrays | |
| 2697 } | |
| 2698 | |
| 2699 void CondInterface::dump() { | |
| 2700 output(stderr); | |
| 2701 } | |
| 2702 | |
| 2703 // Write info to output files | |
| 2704 void CondInterface::output(FILE *fp) { | |
| 2705 Interface::output(fp); | |
| 2706 if ( _equal != NULL ) fprintf(fp," equal == %s\n", _equal); | |
| 2707 if ( _not_equal != NULL ) fprintf(fp," not_equal == %s\n", _not_equal); | |
| 2708 if ( _less != NULL ) fprintf(fp," less == %s\n", _less); | |
| 2709 if ( _greater_equal != NULL ) fprintf(fp," greater_equal == %s\n", _greater_equal); | |
| 2710 if ( _less_equal != NULL ) fprintf(fp," less_equal == %s\n", _less_equal); | |
| 2711 if ( _greater != NULL ) fprintf(fp," greater == %s\n", _greater); | |
| 2712 // fprintf(fp,"\n"); | |
| 2713 } | |
| 2714 | |
| 2715 //------------------------------ConstructRule---------------------------------- | |
| 2716 ConstructRule::ConstructRule(char *cnstr) | |
| 2717 : _construct(cnstr) { | |
| 2718 } | |
| 2719 ConstructRule::~ConstructRule() { | |
| 2720 } | |
| 2721 | |
| 2722 void ConstructRule::dump() { | |
| 2723 output(stderr); | |
| 2724 } | |
| 2725 | |
| 2726 void ConstructRule::output(FILE *fp) { | |
| 2727 fprintf(fp,"\nConstruct Rule\n"); // Write to output files | |
| 2728 } | |
| 2729 | |
| 2730 | |
| 2731 //==============================Shared Forms=================================== | |
| 2732 //------------------------------AttributeForm---------------------------------- | |
| 2733 int AttributeForm::_insId = 0; // start counter at 0 | |
| 2734 int AttributeForm::_opId = 0; // start counter at 0 | |
| 2735 const char* AttributeForm::_ins_cost = "ins_cost"; // required name | |
| 2736 const char* AttributeForm::_op_cost = "op_cost"; // required name | |
| 2737 | |
| 2738 AttributeForm::AttributeForm(char *attr, int type, char *attrdef) | |
| 2739 : Form(Form::ATTR), _attrname(attr), _atype(type), _attrdef(attrdef) { | |
| 2740 if (type==OP_ATTR) { | |
| 2741 id = ++_opId; | |
| 2742 } | |
| 2743 else if (type==INS_ATTR) { | |
| 2744 id = ++_insId; | |
| 2745 } | |
| 2746 else assert( false,""); | |
| 2747 } | |
| 2748 AttributeForm::~AttributeForm() { | |
| 2749 } | |
| 2750 | |
| 2751 // Dynamic type check | |
| 2752 AttributeForm *AttributeForm::is_attribute() const { | |
| 2753 return (AttributeForm*)this; | |
| 2754 } | |
| 2755 | |
| 2756 | |
| 2757 // inlined // int AttributeForm::type() { return id;} | |
| 2758 | |
| 2759 void AttributeForm::dump() { | |
| 2760 output(stderr); | |
| 2761 } | |
| 2762 | |
| 2763 void AttributeForm::output(FILE *fp) { | |
| 2764 if( _attrname && _attrdef ) { | |
| 2765 fprintf(fp,"\n// AttributeForm \nstatic const int %s = %s;\n", | |
| 2766 _attrname, _attrdef); | |
| 2767 } | |
| 2768 else { | |
| 2769 fprintf(fp,"\n// AttributeForm missing name %s or definition %s\n", | |
| 2770 (_attrname?_attrname:""), (_attrdef?_attrdef:"") ); | |
| 2771 } | |
| 2772 } | |
| 2773 | |
| 2774 //------------------------------Component-------------------------------------- | |
| 2775 Component::Component(const char *name, const char *type, int usedef) | |
| 2776 : _name(name), _type(type), _usedef(usedef) { | |
| 2777 _ftype = Form::COMP; | |
| 2778 } | |
| 2779 Component::~Component() { | |
| 2780 } | |
| 2781 | |
| 2782 // True if this component is equal to the parameter. | |
| 2783 bool Component::is(int use_def_kill_enum) const { | |
| 2784 return (_usedef == use_def_kill_enum ? true : false); | |
| 2785 } | |
| 2786 // True if this component is used/def'd/kill'd as the parameter suggests. | |
| 2787 bool Component::isa(int use_def_kill_enum) const { | |
| 2788 return (_usedef & use_def_kill_enum) == use_def_kill_enum; | |
| 2789 } | |
| 2790 | |
| 2791 // Extend this component with additional use/def/kill behavior | |
| 2792 int Component::promote_use_def_info(int new_use_def) { | |
| 2793 _usedef |= new_use_def; | |
| 2794 | |
| 2795 return _usedef; | |
| 2796 } | |
| 2797 | |
| 2798 // Check the base type of this component, if it has one | |
| 2799 const char *Component::base_type(FormDict &globals) { | |
| 2800 const Form *frm = globals[_type]; | |
| 2801 if (frm == NULL) return NULL; | |
| 2802 OperandForm *op = frm->is_operand(); | |
| 2803 if (op == NULL) return NULL; | |
| 2804 if (op->ideal_only()) return op->_ident; | |
| 2805 return (char *)op->ideal_type(globals); | |
| 2806 } | |
| 2807 | |
| 2808 void Component::dump() { | |
| 2809 output(stderr); | |
| 2810 } | |
| 2811 | |
| 2812 void Component::output(FILE *fp) { | |
| 2813 fprintf(fp,"Component:"); // Write to output files | |
| 2814 fprintf(fp, " name = %s", _name); | |
| 2815 fprintf(fp, ", type = %s", _type); | |
| 2816 const char * usedef = "Undefined Use/Def info"; | |
| 2817 switch (_usedef) { | |
| 2818 case USE: usedef = "USE"; break; | |
| 2819 case USE_DEF: usedef = "USE_DEF"; break; | |
| 2820 case USE_KILL: usedef = "USE_KILL"; break; | |
| 2821 case KILL: usedef = "KILL"; break; | |
| 2822 case TEMP: usedef = "TEMP"; break; | |
| 2823 case DEF: usedef = "DEF"; break; | |
| 2824 default: assert(false, "unknown effect"); | |
| 2825 } | |
| 2826 fprintf(fp, ", use/def = %s\n", usedef); | |
| 2827 } | |
| 2828 | |
| 2829 | |
| 2830 //------------------------------ComponentList--------------------------------- | |
| 2831 ComponentList::ComponentList() : NameList(), _matchcnt(0) { | |
| 2832 } | |
| 2833 ComponentList::~ComponentList() { | |
| 2834 // // This list may not own its elements if copied via assignment | |
| 2835 // Component *component; | |
| 2836 // for (reset(); (component = iter()) != NULL;) { | |
| 2837 // delete component; | |
| 2838 // } | |
| 2839 } | |
| 2840 | |
| 2841 void ComponentList::insert(Component *component, bool mflag) { | |
| 2842 NameList::addName((char *)component); | |
| 2843 if(mflag) _matchcnt++; | |
| 2844 } | |
| 2845 void ComponentList::insert(const char *name, const char *opType, int usedef, | |
| 2846 bool mflag) { | |
| 2847 Component * component = new Component(name, opType, usedef); | |
| 2848 insert(component, mflag); | |
| 2849 } | |
| 2850 Component *ComponentList::current() { return (Component*)NameList::current(); } | |
| 2851 Component *ComponentList::iter() { return (Component*)NameList::iter(); } | |
| 2852 Component *ComponentList::match_iter() { | |
| 2853 if(_iter < _matchcnt) return (Component*)NameList::iter(); | |
| 2854 return NULL; | |
| 2855 } | |
| 2856 Component *ComponentList::post_match_iter() { | |
| 2857 Component *comp = iter(); | |
| 2858 // At end of list? | |
| 2859 if ( comp == NULL ) { | |
| 2860 return comp; | |
| 2861 } | |
| 2862 // In post-match components? | |
| 2863 if (_iter > match_count()-1) { | |
| 2864 return comp; | |
| 2865 } | |
| 2866 | |
| 2867 return post_match_iter(); | |
| 2868 } | |
| 2869 | |
| 2870 void ComponentList::reset() { NameList::reset(); } | |
| 2871 int ComponentList::count() { return NameList::count(); } | |
| 2872 | |
| 2873 Component *ComponentList::operator[](int position) { | |
| 2874 // Shortcut complete iteration if there are not enough entries | |
| 2875 if (position >= count()) return NULL; | |
| 2876 | |
| 2877 int index = 0; | |
| 2878 Component *component = NULL; | |
| 2879 for (reset(); (component = iter()) != NULL;) { | |
| 2880 if (index == position) { | |
| 2881 return component; | |
| 2882 } | |
| 2883 ++index; | |
| 2884 } | |
| 2885 | |
| 2886 return NULL; | |
| 2887 } | |
| 2888 | |
| 2889 const Component *ComponentList::search(const char *name) { | |
| 2890 PreserveIter pi(this); | |
| 2891 reset(); | |
| 2892 for( Component *comp = NULL; ((comp = iter()) != NULL); ) { | |
| 2893 if( strcmp(comp->_name,name) == 0 ) return comp; | |
| 2894 } | |
| 2895 | |
| 2896 return NULL; | |
| 2897 } | |
| 2898 | |
| 2899 // Return number of USEs + number of DEFs | |
| 2900 // When there are no components, or the first component is a USE, | |
| 2901 // then we add '1' to hold a space for the 'result' operand. | |
| 2902 int ComponentList::num_operands() { | |
| 2903 PreserveIter pi(this); | |
| 2904 uint count = 1; // result operand | |
| 2905 uint position = 0; | |
| 2906 | |
| 2907 Component *component = NULL; | |
| 2908 for( reset(); (component = iter()) != NULL; ++position ) { | |
| 2909 if( component->isa(Component::USE) || | |
| 2910 ( position == 0 && (! component->isa(Component::DEF))) ) { | |
| 2911 ++count; | |
| 2912 } | |
| 2913 } | |
| 2914 | |
| 2915 return count; | |
| 2916 } | |
| 2917 | |
| 2918 // Return zero-based position in list; -1 if not in list. | |
| 2919 // if parameter 'usedef' is ::USE, it will match USE, USE_DEF, ... | |
| 2920 int ComponentList::operand_position(const char *name, int usedef) { | |
| 2921 PreserveIter pi(this); | |
| 2922 int position = 0; | |
| 2923 int num_opnds = num_operands(); | |
| 2924 Component *component; | |
| 2925 Component* preceding_non_use = NULL; | |
| 2926 Component* first_def = NULL; | |
| 2927 for (reset(); (component = iter()) != NULL; ++position) { | |
| 2928 // When the first component is not a DEF, | |
| 2929 // leave space for the result operand! | |
| 2930 if ( position==0 && (! component->isa(Component::DEF)) ) { | |
| 2931 ++position; | |
| 2932 ++num_opnds; | |
| 2933 } | |
| 2934 if (strcmp(name, component->_name)==0 && (component->isa(usedef))) { | |
| 2935 // When the first entry in the component list is a DEF and a USE | |
| 2936 // Treat them as being separate, a DEF first, then a USE | |
| 2937 if( position==0 | |
| 2938 && usedef==Component::USE && component->isa(Component::DEF) ) { | |
| 2939 assert(position+1 < num_opnds, "advertised index in bounds"); | |
| 2940 return position+1; | |
| 2941 } else { | |
| 2942 if( preceding_non_use && strcmp(component->_name, preceding_non_use->_name) ) { | |
| 2943 fprintf(stderr, "the name '%s' should not precede the name '%s'\n", preceding_non_use->_name, name); | |
| 2944 } | |
| 2945 if( position >= num_opnds ) { | |
| 2946 fprintf(stderr, "the name '%s' is too late in its name list\n", name); | |
| 2947 } | |
| 2948 assert(position < num_opnds, "advertised index in bounds"); | |
| 2949 return position; | |
| 2950 } | |
| 2951 } | |
| 2952 if( component->isa(Component::DEF) | |
| 2953 && component->isa(Component::USE) ) { | |
| 2954 ++position; | |
| 2955 if( position != 1 ) --position; // only use two slots for the 1st USE_DEF | |
| 2956 } | |
| 2957 if( component->isa(Component::DEF) && !first_def ) { | |
| 2958 first_def = component; | |
| 2959 } | |
| 2960 if( !component->isa(Component::USE) && component != first_def ) { | |
| 2961 preceding_non_use = component; | |
| 2962 } else if( preceding_non_use && !strcmp(component->_name, preceding_non_use->_name) ) { | |
| 2963 preceding_non_use = NULL; | |
| 2964 } | |
| 2965 } | |
| 2966 return Not_in_list; | |
| 2967 } | |
| 2968 | |
| 2969 // Find position for this name, regardless of use/def information | |
| 2970 int ComponentList::operand_position(const char *name) { | |
| 2971 PreserveIter pi(this); | |
| 2972 int position = 0; | |
| 2973 Component *component; | |
| 2974 for (reset(); (component = iter()) != NULL; ++position) { | |
| 2975 // When the first component is not a DEF, | |
| 2976 // leave space for the result operand! | |
| 2977 if ( position==0 && (! component->isa(Component::DEF)) ) { | |
| 2978 ++position; | |
| 2979 } | |
| 2980 if (strcmp(name, component->_name)==0) { | |
| 2981 return position; | |
| 2982 } | |
| 2983 if( component->isa(Component::DEF) | |
| 2984 && component->isa(Component::USE) ) { | |
| 2985 ++position; | |
| 2986 if( position != 1 ) --position; // only use two slots for the 1st USE_DEF | |
| 2987 } | |
| 2988 } | |
| 2989 return Not_in_list; | |
| 2990 } | |
| 2991 | |
| 2992 int ComponentList::operand_position_format(const char *name) { | |
| 2993 PreserveIter pi(this); | |
| 2994 int first_position = operand_position(name); | |
| 2995 int use_position = operand_position(name, Component::USE); | |
| 2996 | |
| 2997 return ((first_position < use_position) ? use_position : first_position); | |
| 2998 } | |
| 2999 | |
| 3000 int ComponentList::label_position() { | |
| 3001 PreserveIter pi(this); | |
| 3002 int position = 0; | |
| 3003 reset(); | |
| 3004 for( Component *comp; (comp = iter()) != NULL; ++position) { | |
| 3005 // When the first component is not a DEF, | |
| 3006 // leave space for the result operand! | |
| 3007 if ( position==0 && (! comp->isa(Component::DEF)) ) { | |
| 3008 ++position; | |
| 3009 } | |
| 3010 if (strcmp(comp->_type, "label")==0) { | |
| 3011 return position; | |
| 3012 } | |
| 3013 if( comp->isa(Component::DEF) | |
| 3014 && comp->isa(Component::USE) ) { | |
| 3015 ++position; | |
| 3016 if( position != 1 ) --position; // only use two slots for the 1st USE_DEF | |
| 3017 } | |
| 3018 } | |
| 3019 | |
| 3020 return -1; | |
| 3021 } | |
| 3022 | |
| 3023 int ComponentList::method_position() { | |
| 3024 PreserveIter pi(this); | |
| 3025 int position = 0; | |
| 3026 reset(); | |
| 3027 for( Component *comp; (comp = iter()) != NULL; ++position) { | |
| 3028 // When the first component is not a DEF, | |
| 3029 // leave space for the result operand! | |
| 3030 if ( position==0 && (! comp->isa(Component::DEF)) ) { | |
| 3031 ++position; | |
| 3032 } | |
| 3033 if (strcmp(comp->_type, "method")==0) { | |
| 3034 return position; | |
| 3035 } | |
| 3036 if( comp->isa(Component::DEF) | |
| 3037 && comp->isa(Component::USE) ) { | |
| 3038 ++position; | |
| 3039 if( position != 1 ) --position; // only use two slots for the 1st USE_DEF | |
| 3040 } | |
| 3041 } | |
| 3042 | |
| 3043 return -1; | |
| 3044 } | |
| 3045 | |
| 3046 void ComponentList::dump() { output(stderr); } | |
| 3047 | |
| 3048 void ComponentList::output(FILE *fp) { | |
| 3049 PreserveIter pi(this); | |
| 3050 fprintf(fp, "\n"); | |
| 3051 Component *component; | |
| 3052 for (reset(); (component = iter()) != NULL;) { | |
| 3053 component->output(fp); | |
| 3054 } | |
| 3055 fprintf(fp, "\n"); | |
| 3056 } | |
| 3057 | |
| 3058 //------------------------------MatchNode-------------------------------------- | |
| 3059 MatchNode::MatchNode(ArchDesc &ad, const char *result, const char *mexpr, | |
| 3060 const char *opType, MatchNode *lChild, MatchNode *rChild) | |
| 3061 : _AD(ad), _result(result), _name(mexpr), _opType(opType), | |
| 3062 _lChild(lChild), _rChild(rChild), _internalop(0), _numleaves(0), | |
| 3063 _commutative_id(0) { | |
| 3064 _numleaves = (lChild ? lChild->_numleaves : 0) | |
| 3065 + (rChild ? rChild->_numleaves : 0); | |
| 3066 } | |
| 3067 | |
| 3068 MatchNode::MatchNode(ArchDesc &ad, MatchNode& mnode) | |
| 3069 : _AD(ad), _result(mnode._result), _name(mnode._name), | |
| 3070 _opType(mnode._opType), _lChild(mnode._lChild), _rChild(mnode._rChild), | |
| 3071 _internalop(0), _numleaves(mnode._numleaves), | |
| 3072 _commutative_id(mnode._commutative_id) { | |
| 3073 } | |
| 3074 | |
| 3075 MatchNode::MatchNode(ArchDesc &ad, MatchNode& mnode, int clone) | |
| 3076 : _AD(ad), _result(mnode._result), _name(mnode._name), | |
| 3077 _opType(mnode._opType), | |
| 3078 _internalop(0), _numleaves(mnode._numleaves), | |
| 3079 _commutative_id(mnode._commutative_id) { | |
| 3080 if (mnode._lChild) { | |
| 3081 _lChild = new MatchNode(ad, *mnode._lChild, clone); | |
| 3082 } else { | |
| 3083 _lChild = NULL; | |
| 3084 } | |
| 3085 if (mnode._rChild) { | |
| 3086 _rChild = new MatchNode(ad, *mnode._rChild, clone); | |
| 3087 } else { | |
| 3088 _rChild = NULL; | |
| 3089 } | |
| 3090 } | |
| 3091 | |
| 3092 MatchNode::~MatchNode() { | |
| 3093 // // This node may not own its children if copied via assignment | |
| 3094 // if( _lChild ) delete _lChild; | |
| 3095 // if( _rChild ) delete _rChild; | |
| 3096 } | |
| 3097 | |
| 3098 bool MatchNode::find_type(const char *type, int &position) const { | |
| 3099 if ( (_lChild != NULL) && (_lChild->find_type(type, position)) ) return true; | |
| 3100 if ( (_rChild != NULL) && (_rChild->find_type(type, position)) ) return true; | |
| 3101 | |
| 3102 if (strcmp(type,_opType)==0) { | |
| 3103 return true; | |
| 3104 } else { | |
| 3105 ++position; | |
| 3106 } | |
| 3107 return false; | |
| 3108 } | |
| 3109 | |
| 3110 // Recursive call collecting info on top-level operands, not transitive. | |
| 3111 // Implementation does not modify state of internal structures. | |
|
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3112 void MatchNode::append_components(FormDict& locals, ComponentList& components, |
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3113 bool def_flag) const { |
|
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3114 int usedef = def_flag ? Component::DEF : Component::USE; |
| 0 | 3115 FormDict &globals = _AD.globalNames(); |
| 3116 | |
| 3117 assert (_name != NULL, "MatchNode::build_components encountered empty node\n"); | |
| 3118 // Base case | |
| 3119 if (_lChild==NULL && _rChild==NULL) { | |
| 3120 // If _opType is not an operation, do not build a component for it ##### | |
| 3121 const Form *f = globals[_opType]; | |
| 3122 if( f != NULL ) { | |
| 3123 // Add non-ideals that are operands, operand-classes, | |
| 3124 if( ! f->ideal_only() | |
| 3125 && (f->is_opclass() || f->is_operand()) ) { | |
| 3126 components.insert(_name, _opType, usedef, true); | |
| 3127 } | |
| 3128 } | |
| 3129 return; | |
| 3130 } | |
| 3131 // Promote results of "Set" to DEF | |
|
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3132 bool tmpdef_flag = (!strcmp(_opType, "Set")) ? true : false; |
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3133 if (_lChild) _lChild->append_components(locals, components, tmpdef_flag); |
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3134 tmpdef_flag = false; // only applies to component immediately following 'Set' |
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3135 if (_rChild) _rChild->append_components(locals, components, tmpdef_flag); |
| 0 | 3136 } |
| 3137 | |
| 3138 // Find the n'th base-operand in the match node, | |
| 3139 // recursively investigates match rules of user-defined operands. | |
| 3140 // | |
| 3141 // Implementation does not modify state of internal structures since they | |
| 3142 // can be shared. | |
| 3143 bool MatchNode::base_operand(uint &position, FormDict &globals, | |
| 3144 const char * &result, const char * &name, | |
| 3145 const char * &opType) const { | |
| 3146 assert (_name != NULL, "MatchNode::base_operand encountered empty node\n"); | |
| 3147 // Base case | |
| 3148 if (_lChild==NULL && _rChild==NULL) { | |
| 3149 // Check for special case: "Universe", "label" | |
| 3150 if (strcmp(_opType,"Universe") == 0 || strcmp(_opType,"label")==0 ) { | |
| 3151 if (position == 0) { | |
| 3152 result = _result; | |
| 3153 name = _name; | |
| 3154 opType = _opType; | |
| 3155 return 1; | |
| 3156 } else { | |
| 3157 -- position; | |
| 3158 return 0; | |
| 3159 } | |
| 3160 } | |
| 3161 | |
| 3162 const Form *form = globals[_opType]; | |
| 3163 MatchNode *matchNode = NULL; | |
| 3164 // Check for user-defined type | |
| 3165 if (form) { | |
| 3166 // User operand or instruction? | |
| 3167 OperandForm *opForm = form->is_operand(); | |
| 3168 InstructForm *inForm = form->is_instruction(); | |
| 3169 if ( opForm ) { | |
| 3170 matchNode = (MatchNode*)opForm->_matrule; | |
| 3171 } else if ( inForm ) { | |
| 3172 matchNode = (MatchNode*)inForm->_matrule; | |
| 3173 } | |
| 3174 } | |
| 3175 // if this is user-defined, recurse on match rule | |
| 3176 // User-defined operand and instruction forms have a match-rule. | |
| 3177 if (matchNode) { | |
| 3178 return (matchNode->base_operand(position,globals,result,name,opType)); | |
| 3179 } else { | |
| 3180 // Either not a form, or a system-defined form (no match rule). | |
| 3181 if (position==0) { | |
| 3182 result = _result; | |
| 3183 name = _name; | |
| 3184 opType = _opType; | |
| 3185 return 1; | |
| 3186 } else { | |
| 3187 --position; | |
| 3188 return 0; | |
| 3189 } | |
| 3190 } | |
| 3191 | |
| 3192 } else { | |
| 3193 // Examine the left child and right child as well | |
| 3194 if (_lChild) { | |
| 3195 if (_lChild->base_operand(position, globals, result, name, opType)) | |
| 3196 return 1; | |
| 3197 } | |
| 3198 | |
| 3199 if (_rChild) { | |
| 3200 if (_rChild->base_operand(position, globals, result, name, opType)) | |
| 3201 return 1; | |
| 3202 } | |
| 3203 } | |
| 3204 | |
| 3205 return 0; | |
| 3206 } | |
| 3207 | |
| 3208 // Recursive call on all operands' match rules in my match rule. | |
| 3209 uint MatchNode::num_consts(FormDict &globals) const { | |
| 3210 uint index = 0; | |
| 3211 uint num_consts = 0; | |
| 3212 const char *result; | |
| 3213 const char *name; | |
| 3214 const char *opType; | |
| 3215 | |
| 3216 for (uint position = index; | |
| 3217 base_operand(position,globals,result,name,opType); position = index) { | |
| 3218 ++index; | |
| 3219 if( ideal_to_const_type(opType) ) num_consts++; | |
| 3220 } | |
| 3221 | |
| 3222 return num_consts; | |
| 3223 } | |
| 3224 | |
| 3225 // Recursive call on all operands' match rules in my match rule. | |
| 3226 // Constants in match rule subtree with specified type | |
| 3227 uint MatchNode::num_consts(FormDict &globals, Form::DataType type) const { | |
| 3228 uint index = 0; | |
| 3229 uint num_consts = 0; | |
| 3230 const char *result; | |
| 3231 const char *name; | |
| 3232 const char *opType; | |
| 3233 | |
| 3234 for (uint position = index; | |
| 3235 base_operand(position,globals,result,name,opType); position = index) { | |
| 3236 ++index; | |
| 3237 if( ideal_to_const_type(opType) == type ) num_consts++; | |
| 3238 } | |
| 3239 | |
| 3240 return num_consts; | |
| 3241 } | |
| 3242 | |
| 3243 // Recursive call on all operands' match rules in my match rule. | |
| 3244 uint MatchNode::num_const_ptrs(FormDict &globals) const { | |
| 3245 return num_consts( globals, Form::idealP ); | |
| 3246 } | |
| 3247 | |
| 3248 bool MatchNode::sets_result() const { | |
| 3249 return ( (strcmp(_name,"Set") == 0) ? true : false ); | |
| 3250 } | |
| 3251 | |
| 3252 const char *MatchNode::reduce_right(FormDict &globals) const { | |
| 3253 // If there is no right reduction, return NULL. | |
| 3254 const char *rightStr = NULL; | |
| 3255 | |
| 3256 // If we are a "Set", start from the right child. | |
| 3257 const MatchNode *const mnode = sets_result() ? | |
| 3258 (const MatchNode *const)this->_rChild : | |
| 3259 (const MatchNode *const)this; | |
| 3260 | |
| 3261 // If our right child exists, it is the right reduction | |
| 3262 if ( mnode->_rChild ) { | |
| 3263 rightStr = mnode->_rChild->_internalop ? mnode->_rChild->_internalop | |
| 3264 : mnode->_rChild->_opType; | |
| 3265 } | |
| 3266 // Else, May be simple chain rule: (Set dst operand_form), rightStr=NULL; | |
| 3267 return rightStr; | |
| 3268 } | |
| 3269 | |
| 3270 const char *MatchNode::reduce_left(FormDict &globals) const { | |
| 3271 // If there is no left reduction, return NULL. | |
| 3272 const char *leftStr = NULL; | |
| 3273 | |
| 3274 // If we are a "Set", start from the right child. | |
| 3275 const MatchNode *const mnode = sets_result() ? | |
| 3276 (const MatchNode *const)this->_rChild : | |
| 3277 (const MatchNode *const)this; | |
| 3278 | |
| 3279 // If our left child exists, it is the left reduction | |
| 3280 if ( mnode->_lChild ) { | |
| 3281 leftStr = mnode->_lChild->_internalop ? mnode->_lChild->_internalop | |
| 3282 : mnode->_lChild->_opType; | |
| 3283 } else { | |
| 3284 // May be simple chain rule: (Set dst operand_form_source) | |
| 3285 if ( sets_result() ) { | |
| 3286 OperandForm *oper = globals[mnode->_opType]->is_operand(); | |
| 3287 if( oper ) { | |
| 3288 leftStr = mnode->_opType; | |
| 3289 } | |
| 3290 } | |
| 3291 } | |
| 3292 return leftStr; | |
| 3293 } | |
| 3294 | |
| 3295 //------------------------------count_instr_names------------------------------ | |
| 3296 // Count occurrences of operands names in the leaves of the instruction | |
| 3297 // match rule. | |
| 3298 void MatchNode::count_instr_names( Dict &names ) { | |
| 3299 if( !this ) return; | |
| 3300 if( _lChild ) _lChild->count_instr_names(names); | |
| 3301 if( _rChild ) _rChild->count_instr_names(names); | |
| 3302 if( !_lChild && !_rChild ) { | |
| 3303 uintptr_t cnt = (uintptr_t)names[_name]; | |
| 3304 cnt++; // One more name found | |
| 3305 names.Insert(_name,(void*)cnt); | |
| 3306 } | |
| 3307 } | |
| 3308 | |
| 3309 //------------------------------build_instr_pred------------------------------- | |
| 3310 // Build a path to 'name' in buf. Actually only build if cnt is zero, so we | |
| 3311 // can skip some leading instances of 'name'. | |
| 3312 int MatchNode::build_instr_pred( char *buf, const char *name, int cnt ) { | |
| 3313 if( _lChild ) { | |
| 3314 if( !cnt ) strcpy( buf, "_kids[0]->" ); | |
| 3315 cnt = _lChild->build_instr_pred( buf+strlen(buf), name, cnt ); | |
| 3316 if( cnt < 0 ) return cnt; // Found it, all done | |
| 3317 } | |
| 3318 if( _rChild ) { | |
| 3319 if( !cnt ) strcpy( buf, "_kids[1]->" ); | |
| 3320 cnt = _rChild->build_instr_pred( buf+strlen(buf), name, cnt ); | |
| 3321 if( cnt < 0 ) return cnt; // Found it, all done | |
| 3322 } | |
| 3323 if( !_lChild && !_rChild ) { // Found a leaf | |
| 3324 // Wrong name? Give up... | |
| 3325 if( strcmp(name,_name) ) return cnt; | |
| 3326 if( !cnt ) strcpy(buf,"_leaf"); | |
| 3327 return cnt-1; | |
| 3328 } | |
| 3329 return cnt; | |
| 3330 } | |
| 3331 | |
| 3332 | |
| 3333 //------------------------------build_internalop------------------------------- | |
| 3334 // Build string representation of subtree | |
| 3335 void MatchNode::build_internalop( ) { | |
| 3336 char *iop, *subtree; | |
| 3337 const char *lstr, *rstr; | |
| 3338 // Build string representation of subtree | |
| 3339 // Operation lchildType rchildType | |
| 3340 int len = (int)strlen(_opType) + 4; | |
| 3341 lstr = (_lChild) ? ((_lChild->_internalop) ? | |
| 3342 _lChild->_internalop : _lChild->_opType) : ""; | |
| 3343 rstr = (_rChild) ? ((_rChild->_internalop) ? | |
| 3344 _rChild->_internalop : _rChild->_opType) : ""; | |
| 3345 len += (int)strlen(lstr) + (int)strlen(rstr); | |
| 3346 subtree = (char *)malloc(len); | |
| 3347 sprintf(subtree,"_%s_%s_%s", _opType, lstr, rstr); | |
| 3348 // Hash the subtree string in _internalOps; if a name exists, use it | |
| 3349 iop = (char *)_AD._internalOps[subtree]; | |
| 3350 // Else create a unique name, and add it to the hash table | |
| 3351 if (iop == NULL) { | |
| 3352 iop = subtree; | |
| 3353 _AD._internalOps.Insert(subtree, iop); | |
| 3354 _AD._internalOpNames.addName(iop); | |
| 3355 _AD._internalMatch.Insert(iop, this); | |
| 3356 } | |
| 3357 // Add the internal operand name to the MatchNode | |
| 3358 _internalop = iop; | |
| 3359 _result = iop; | |
| 3360 } | |
| 3361 | |
| 3362 | |
| 3363 void MatchNode::dump() { | |
| 3364 output(stderr); | |
| 3365 } | |
| 3366 | |
| 3367 void MatchNode::output(FILE *fp) { | |
| 3368 if (_lChild==0 && _rChild==0) { | |
| 3369 fprintf(fp," %s",_name); // operand | |
| 3370 } | |
| 3371 else { | |
| 3372 fprintf(fp," (%s ",_name); // " (opcodeName " | |
| 3373 if(_lChild) _lChild->output(fp); // left operand | |
| 3374 if(_rChild) _rChild->output(fp); // right operand | |
| 3375 fprintf(fp,")"); // ")" | |
| 3376 } | |
| 3377 } | |
| 3378 | |
| 3379 int MatchNode::needs_ideal_memory_edge(FormDict &globals) const { | |
| 3380 static const char *needs_ideal_memory_list[] = { | |
|
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3381 "StoreI","StoreL","StoreP","StoreN","StoreD","StoreF" , |
| 0 | 3382 "StoreB","StoreC","Store" ,"StoreFP", |
| 624 | 3383 "LoadI", "LoadUI2L", "LoadL", "LoadP" ,"LoadN", "LoadD" ,"LoadF" , |
| 3384 "LoadB" , "LoadUB", "LoadUS" ,"LoadS" ,"Load" , | |
| 0 | 3385 "Store4I","Store2I","Store2L","Store2D","Store4F","Store2F","Store16B", |
| 3386 "Store8B","Store4B","Store8C","Store4C","Store2C", | |
| 3387 "Load4I" ,"Load2I" ,"Load2L" ,"Load2D" ,"Load4F" ,"Load2F" ,"Load16B" , | |
| 3388 "Load8B" ,"Load4B" ,"Load8C" ,"Load4C" ,"Load2C" ,"Load8S", "Load4S","Load2S", | |
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3389 "LoadRange", "LoadKlass", "LoadNKlass", "LoadL_unaligned", "LoadD_unaligned", |
| 0 | 3390 "LoadPLocked", "LoadLLocked", |
|
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3391 "StorePConditional", "StoreIConditional", "StoreLConditional", |
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3392 "CompareAndSwapI", "CompareAndSwapL", "CompareAndSwapP", "CompareAndSwapN", |
| 0 | 3393 "StoreCM", |
| 3394 "ClearArray" | |
| 3395 }; | |
| 3396 int cnt = sizeof(needs_ideal_memory_list)/sizeof(char*); | |
| 3854 | 3397 if( strcmp(_opType,"PrefetchRead")==0 || |
| 3398 strcmp(_opType,"PrefetchWrite")==0 || | |
| 3399 strcmp(_opType,"PrefetchAllocation")==0 ) | |
| 0 | 3400 return 1; |
| 3401 if( _lChild ) { | |
| 3402 const char *opType = _lChild->_opType; | |
| 3403 for( int i=0; i<cnt; i++ ) | |
| 3404 if( strcmp(opType,needs_ideal_memory_list[i]) == 0 ) | |
| 3405 return 1; | |
| 3406 if( _lChild->needs_ideal_memory_edge(globals) ) | |
| 3407 return 1; | |
| 3408 } | |
| 3409 if( _rChild ) { | |
| 3410 const char *opType = _rChild->_opType; | |
| 3411 for( int i=0; i<cnt; i++ ) | |
| 3412 if( strcmp(opType,needs_ideal_memory_list[i]) == 0 ) | |
| 3413 return 1; | |
| 3414 if( _rChild->needs_ideal_memory_edge(globals) ) | |
| 3415 return 1; | |
| 3416 } | |
| 3417 | |
| 3418 return 0; | |
| 3419 } | |
| 3420 | |
| 3421 // TRUE if defines a derived oop, and so needs a base oop edge present | |
| 3422 // post-matching. | |
| 3423 int MatchNode::needs_base_oop_edge() const { | |
| 3424 if( !strcmp(_opType,"AddP") ) return 1; | |
| 3425 if( strcmp(_opType,"Set") ) return 0; | |
| 3426 return !strcmp(_rChild->_opType,"AddP"); | |
| 3427 } | |
| 3428 | |
| 3429 int InstructForm::needs_base_oop_edge(FormDict &globals) const { | |
| 3430 if( is_simple_chain_rule(globals) ) { | |
| 3431 const char *src = _matrule->_rChild->_opType; | |
| 3432 OperandForm *src_op = globals[src]->is_operand(); | |
| 3433 assert( src_op, "Not operand class of chain rule" ); | |
| 3434 return src_op->_matrule ? src_op->_matrule->needs_base_oop_edge() : 0; | |
| 3435 } // Else check instruction | |
| 3436 | |
| 3437 return _matrule ? _matrule->needs_base_oop_edge() : 0; | |
| 3438 } | |
| 3439 | |
| 3440 | |
| 3441 //-------------------------cisc spilling methods------------------------------- | |
| 3442 // helper routines and methods for detecting cisc-spilling instructions | |
| 3443 //-------------------------cisc_spill_merge------------------------------------ | |
| 3444 int MatchNode::cisc_spill_merge(int left_spillable, int right_spillable) { | |
| 3445 int cisc_spillable = Maybe_cisc_spillable; | |
| 3446 | |
| 3447 // Combine results of left and right checks | |
| 3448 if( (left_spillable == Maybe_cisc_spillable) && (right_spillable == Maybe_cisc_spillable) ) { | |
| 3449 // neither side is spillable, nor prevents cisc spilling | |
| 3450 cisc_spillable = Maybe_cisc_spillable; | |
| 3451 } | |
| 3452 else if( (left_spillable == Maybe_cisc_spillable) && (right_spillable > Maybe_cisc_spillable) ) { | |
| 3453 // right side is spillable | |
| 3454 cisc_spillable = right_spillable; | |
| 3455 } | |
| 3456 else if( (right_spillable == Maybe_cisc_spillable) && (left_spillable > Maybe_cisc_spillable) ) { | |
| 3457 // left side is spillable | |
| 3458 cisc_spillable = left_spillable; | |
| 3459 } | |
| 3460 else if( (left_spillable == Not_cisc_spillable) || (right_spillable == Not_cisc_spillable) ) { | |
| 3461 // left or right prevents cisc spilling this instruction | |
| 3462 cisc_spillable = Not_cisc_spillable; | |
| 3463 } | |
| 3464 else { | |
| 3465 // Only allow one to spill | |
| 3466 cisc_spillable = Not_cisc_spillable; | |
| 3467 } | |
| 3468 | |
| 3469 return cisc_spillable; | |
| 3470 } | |
| 3471 | |
| 3472 //-------------------------root_ops_match-------------------------------------- | |
| 3473 bool static root_ops_match(FormDict &globals, const char *op1, const char *op2) { | |
| 3474 // Base Case: check that the current operands/operations match | |
| 3475 assert( op1, "Must have op's name"); | |
| 3476 assert( op2, "Must have op's name"); | |
| 3477 const Form *form1 = globals[op1]; | |
| 3478 const Form *form2 = globals[op2]; | |
| 3479 | |
| 3480 return (form1 == form2); | |
| 3481 } | |
| 3482 | |
|
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3483 //-------------------------cisc_spill_match_node------------------------------- |
| 0 | 3484 // Recursively check two MatchRules for legal conversion via cisc-spilling |
|
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3485 int MatchNode::cisc_spill_match(FormDict& globals, RegisterForm* registers, MatchNode* mRule2, const char* &operand, const char* ®_type) { |
| 0 | 3486 int cisc_spillable = Maybe_cisc_spillable; |
| 3487 int left_spillable = Maybe_cisc_spillable; | |
| 3488 int right_spillable = Maybe_cisc_spillable; | |
| 3489 | |
| 3490 // Check that each has same number of operands at this level | |
| 3491 if( (_lChild && !(mRule2->_lChild)) || (_rChild && !(mRule2->_rChild)) ) | |
| 3492 return Not_cisc_spillable; | |
| 3493 | |
| 3494 // Base Case: check that the current operands/operations match | |
| 3495 // or are CISC spillable | |
| 3496 assert( _opType, "Must have _opType"); | |
| 3497 assert( mRule2->_opType, "Must have _opType"); | |
| 3498 const Form *form = globals[_opType]; | |
| 3499 const Form *form2 = globals[mRule2->_opType]; | |
| 3500 if( form == form2 ) { | |
| 3501 cisc_spillable = Maybe_cisc_spillable; | |
| 3502 } else { | |
| 3503 const InstructForm *form2_inst = form2 ? form2->is_instruction() : NULL; | |
| 3504 const char *name_left = mRule2->_lChild ? mRule2->_lChild->_opType : NULL; | |
| 3505 const char *name_right = mRule2->_rChild ? mRule2->_rChild->_opType : NULL; | |
| 624 | 3506 DataType data_type = Form::none; |
| 3507 if (form->is_operand()) { | |
| 3508 // Make sure the loadX matches the type of the reg | |
| 3509 data_type = form->ideal_to_Reg_type(form->is_operand()->ideal_type(globals)); | |
| 3510 } | |
| 0 | 3511 // Detect reg vs (loadX memory) |
| 3512 if( form->is_cisc_reg(globals) | |
| 3513 && form2_inst | |
| 624 | 3514 && data_type != Form::none |
| 3515 && (is_load_from_memory(mRule2->_opType) == data_type) // reg vs. (load memory) | |
| 0 | 3516 && (name_left != NULL) // NOT (load) |
| 3517 && (name_right == NULL) ) { // NOT (load memory foo) | |
| 3518 const Form *form2_left = name_left ? globals[name_left] : NULL; | |
| 3519 if( form2_left && form2_left->is_cisc_mem(globals) ) { | |
| 3520 cisc_spillable = Is_cisc_spillable; | |
| 3521 operand = _name; | |
| 3522 reg_type = _result; | |
| 3523 return Is_cisc_spillable; | |
| 3524 } else { | |
| 3525 cisc_spillable = Not_cisc_spillable; | |
| 3526 } | |
| 3527 } | |
| 3528 // Detect reg vs memory | |
| 3529 else if( form->is_cisc_reg(globals) && form2->is_cisc_mem(globals) ) { | |
| 3530 cisc_spillable = Is_cisc_spillable; | |
| 3531 operand = _name; | |
| 3532 reg_type = _result; | |
| 3533 return Is_cisc_spillable; | |
| 3534 } else { | |
| 3535 cisc_spillable = Not_cisc_spillable; | |
| 3536 } | |
| 3537 } | |
| 3538 | |
| 3539 // If cisc is still possible, check rest of tree | |
| 3540 if( cisc_spillable == Maybe_cisc_spillable ) { | |
| 3541 // Check that each has same number of operands at this level | |
| 3542 if( (_lChild && !(mRule2->_lChild)) || (_rChild && !(mRule2->_rChild)) ) return Not_cisc_spillable; | |
| 3543 | |
| 3544 // Check left operands | |
| 3545 if( (_lChild == NULL) && (mRule2->_lChild == NULL) ) { | |
| 3546 left_spillable = Maybe_cisc_spillable; | |
| 3547 } else { | |
| 3548 left_spillable = _lChild->cisc_spill_match(globals, registers, mRule2->_lChild, operand, reg_type); | |
| 3549 } | |
| 3550 | |
| 3551 // Check right operands | |
| 3552 if( (_rChild == NULL) && (mRule2->_rChild == NULL) ) { | |
| 3553 right_spillable = Maybe_cisc_spillable; | |
| 3554 } else { | |
| 3555 right_spillable = _rChild->cisc_spill_match(globals, registers, mRule2->_rChild, operand, reg_type); | |
| 3556 } | |
| 3557 | |
| 3558 // Combine results of left and right checks | |
| 3559 cisc_spillable = cisc_spill_merge(left_spillable, right_spillable); | |
| 3560 } | |
| 3561 | |
| 3562 return cisc_spillable; | |
| 3563 } | |
| 3564 | |
|
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3565 //---------------------------cisc_spill_match_rule------------------------------ |
| 0 | 3566 // Recursively check two MatchRules for legal conversion via cisc-spilling |
| 3567 // This method handles the root of Match tree, | |
| 3568 // general recursive checks done in MatchNode | |
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3569 int MatchRule::matchrule_cisc_spill_match(FormDict& globals, RegisterForm* registers, |
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3570 MatchRule* mRule2, const char* &operand, |
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3571 const char* ®_type) { |
| 0 | 3572 int cisc_spillable = Maybe_cisc_spillable; |
| 3573 int left_spillable = Maybe_cisc_spillable; | |
| 3574 int right_spillable = Maybe_cisc_spillable; | |
| 3575 | |
| 3576 // Check that each sets a result | |
| 3577 if( !(sets_result() && mRule2->sets_result()) ) return Not_cisc_spillable; | |
| 3578 // Check that each has same number of operands at this level | |
| 3579 if( (_lChild && !(mRule2->_lChild)) || (_rChild && !(mRule2->_rChild)) ) return Not_cisc_spillable; | |
| 3580 | |
| 3581 // Check left operands: at root, must be target of 'Set' | |
| 3582 if( (_lChild == NULL) || (mRule2->_lChild == NULL) ) { | |
| 3583 left_spillable = Not_cisc_spillable; | |
| 3584 } else { | |
| 3585 // Do not support cisc-spilling instruction's target location | |
| 3586 if( root_ops_match(globals, _lChild->_opType, mRule2->_lChild->_opType) ) { | |
| 3587 left_spillable = Maybe_cisc_spillable; | |
| 3588 } else { | |
| 3589 left_spillable = Not_cisc_spillable; | |
| 3590 } | |
| 3591 } | |
| 3592 | |
| 3593 // Check right operands: recursive walk to identify reg->mem operand | |
| 3594 if( (_rChild == NULL) && (mRule2->_rChild == NULL) ) { | |
| 3595 right_spillable = Maybe_cisc_spillable; | |
| 3596 } else { | |
| 3597 right_spillable = _rChild->cisc_spill_match(globals, registers, mRule2->_rChild, operand, reg_type); | |
| 3598 } | |
| 3599 | |
| 3600 // Combine results of left and right checks | |
| 3601 cisc_spillable = cisc_spill_merge(left_spillable, right_spillable); | |
| 3602 | |
| 3603 return cisc_spillable; | |
| 3604 } | |
| 3605 | |
| 3606 //----------------------------- equivalent ------------------------------------ | |
| 3607 // Recursively check to see if two match rules are equivalent. | |
| 3608 // This rule handles the root. | |
|
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3609 bool MatchRule::equivalent(FormDict &globals, MatchNode *mRule2) { |
| 0 | 3610 // Check that each sets a result |
| 3611 if (sets_result() != mRule2->sets_result()) { | |
| 3612 return false; | |
| 3613 } | |
| 3614 | |
| 3615 // Check that the current operands/operations match | |
| 3616 assert( _opType, "Must have _opType"); | |
| 3617 assert( mRule2->_opType, "Must have _opType"); | |
| 3618 const Form *form = globals[_opType]; | |
| 3619 const Form *form2 = globals[mRule2->_opType]; | |
| 3620 if( form != form2 ) { | |
| 3621 return false; | |
| 3622 } | |
| 3623 | |
| 3624 if (_lChild ) { | |
| 3625 if( !_lChild->equivalent(globals, mRule2->_lChild) ) | |
| 3626 return false; | |
| 3627 } else if (mRule2->_lChild) { | |
| 3628 return false; // I have NULL left child, mRule2 has non-NULL left child. | |
| 3629 } | |
| 3630 | |
| 3631 if (_rChild ) { | |
| 3632 if( !_rChild->equivalent(globals, mRule2->_rChild) ) | |
| 3633 return false; | |
| 3634 } else if (mRule2->_rChild) { | |
| 3635 return false; // I have NULL right child, mRule2 has non-NULL right child. | |
| 3636 } | |
| 3637 | |
| 3638 // We've made it through the gauntlet. | |
| 3639 return true; | |
| 3640 } | |
| 3641 | |
| 3642 //----------------------------- equivalent ------------------------------------ | |
| 3643 // Recursively check to see if two match rules are equivalent. | |
| 3644 // This rule handles the operands. | |
| 3645 bool MatchNode::equivalent(FormDict &globals, MatchNode *mNode2) { | |
| 3646 if( !mNode2 ) | |
| 3647 return false; | |
| 3648 | |
| 3649 // Check that the current operands/operations match | |
| 3650 assert( _opType, "Must have _opType"); | |
| 3651 assert( mNode2->_opType, "Must have _opType"); | |
| 3652 const Form *form = globals[_opType]; | |
| 3653 const Form *form2 = globals[mNode2->_opType]; | |
| 3839 | 3654 if( form != form2 ) { |
| 3655 return false; | |
| 3656 } | |
| 3657 | |
| 3658 // Check that their children also match | |
| 3659 if (_lChild ) { | |
| 3660 if( !_lChild->equivalent(globals, mNode2->_lChild) ) | |
| 3661 return false; | |
| 3662 } else if (mNode2->_lChild) { | |
| 3663 return false; // I have NULL left child, mNode2 has non-NULL left child. | |
| 3664 } | |
| 3665 | |
| 3666 if (_rChild ) { | |
| 3667 if( !_rChild->equivalent(globals, mNode2->_rChild) ) | |
| 3668 return false; | |
| 3669 } else if (mNode2->_rChild) { | |
| 3670 return false; // I have NULL right child, mNode2 has non-NULL right child. | |
| 3671 } | |
| 3672 | |
| 3673 // We've made it through the gauntlet. | |
| 3674 return true; | |
| 0 | 3675 } |
| 3676 | |
| 3677 //-------------------------- has_commutative_op ------------------------------- | |
| 3678 // Recursively check for commutative operations with subtree operands | |
| 3679 // which could be swapped. | |
| 3680 void MatchNode::count_commutative_op(int& count) { | |
| 3681 static const char *commut_op_list[] = { | |
| 3682 "AddI","AddL","AddF","AddD", | |
| 3683 "AndI","AndL", | |
| 3684 "MaxI","MinI", | |
| 3685 "MulI","MulL","MulF","MulD", | |
| 3686 "OrI" ,"OrL" , | |
| 3687 "XorI","XorL" | |
| 3688 }; | |
| 3689 int cnt = sizeof(commut_op_list)/sizeof(char*); | |
| 3690 | |
| 3691 if( _lChild && _rChild && (_lChild->_lChild || _rChild->_lChild) ) { | |
| 3692 // Don't swap if right operand is an immediate constant. | |
| 3693 bool is_const = false; | |
| 3694 if( _rChild->_lChild == NULL && _rChild->_rChild == NULL ) { | |
| 3695 FormDict &globals = _AD.globalNames(); | |
| 3696 const Form *form = globals[_rChild->_opType]; | |
| 3697 if ( form ) { | |
| 3698 OperandForm *oper = form->is_operand(); | |
| 3699 if( oper && oper->interface_type(globals) == Form::constant_interface ) | |
| 3700 is_const = true; | |
| 3701 } | |
| 3702 } | |
| 3703 if( !is_const ) { | |
| 3704 for( int i=0; i<cnt; i++ ) { | |
| 3705 if( strcmp(_opType, commut_op_list[i]) == 0 ) { | |
| 3706 count++; | |
| 3707 _commutative_id = count; // id should be > 0 | |
| 3708 break; | |
| 3709 } | |
| 3710 } | |
| 3711 } | |
| 3712 } | |
| 3713 if( _lChild ) | |
| 3714 _lChild->count_commutative_op(count); | |
| 3715 if( _rChild ) | |
| 3716 _rChild->count_commutative_op(count); | |
| 3717 } | |
| 3718 | |
| 3719 //-------------------------- swap_commutative_op ------------------------------ | |
| 3720 // Recursively swap specified commutative operation with subtree operands. | |
| 3721 void MatchNode::swap_commutative_op(bool atroot, int id) { | |
| 3722 if( _commutative_id == id ) { // id should be > 0 | |
| 3723 assert(_lChild && _rChild && (_lChild->_lChild || _rChild->_lChild ), | |
| 3724 "not swappable operation"); | |
| 3725 MatchNode* tmp = _lChild; | |
| 3726 _lChild = _rChild; | |
| 3727 _rChild = tmp; | |
| 3728 // Don't exit here since we need to build internalop. | |
| 3729 } | |
| 3730 | |
| 3731 bool is_set = ( strcmp(_opType, "Set") == 0 ); | |
| 3732 if( _lChild ) | |
| 3733 _lChild->swap_commutative_op(is_set, id); | |
| 3734 if( _rChild ) | |
| 3735 _rChild->swap_commutative_op(is_set, id); | |
| 3736 | |
| 3737 // If not the root, reduce this subtree to an internal operand | |
| 3738 if( !atroot && (_lChild || _rChild) ) { | |
| 3739 build_internalop(); | |
| 3740 } | |
| 3741 } | |
| 3742 | |
| 3743 //-------------------------- swap_commutative_op ------------------------------ | |
| 3744 // Recursively swap specified commutative operation with subtree operands. | |
|
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3745 void MatchRule::matchrule_swap_commutative_op(const char* instr_ident, int count, int& match_rules_cnt) { |
| 0 | 3746 assert(match_rules_cnt < 100," too many match rule clones"); |
| 3747 // Clone | |
| 3748 MatchRule* clone = new MatchRule(_AD, this); | |
| 3749 // Swap operands of commutative operation | |
| 3750 ((MatchNode*)clone)->swap_commutative_op(true, count); | |
| 3751 char* buf = (char*) malloc(strlen(instr_ident) + 4); | |
| 3752 sprintf(buf, "%s_%d", instr_ident, match_rules_cnt++); | |
| 3753 clone->_result = buf; | |
| 3754 | |
| 3755 clone->_next = this->_next; | |
| 3756 this-> _next = clone; | |
| 3757 if( (--count) > 0 ) { | |
|
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3758 this-> matchrule_swap_commutative_op(instr_ident, count, match_rules_cnt); |
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3759 clone->matchrule_swap_commutative_op(instr_ident, count, match_rules_cnt); |
| 0 | 3760 } |
| 3761 } | |
| 3762 | |
| 3763 //------------------------------MatchRule-------------------------------------- | |
| 3764 MatchRule::MatchRule(ArchDesc &ad) | |
| 3765 : MatchNode(ad), _depth(0), _construct(NULL), _numchilds(0) { | |
| 3766 _next = NULL; | |
| 3767 } | |
| 3768 | |
| 3769 MatchRule::MatchRule(ArchDesc &ad, MatchRule* mRule) | |
| 3770 : MatchNode(ad, *mRule, 0), _depth(mRule->_depth), | |
| 3771 _construct(mRule->_construct), _numchilds(mRule->_numchilds) { | |
| 3772 _next = NULL; | |
| 3773 } | |
| 3774 | |
| 3775 MatchRule::MatchRule(ArchDesc &ad, MatchNode* mroot, int depth, char *cnstr, | |
| 3776 int numleaves) | |
| 3777 : MatchNode(ad,*mroot), _depth(depth), _construct(cnstr), | |
| 3778 _numchilds(0) { | |
| 3779 _next = NULL; | |
| 3780 mroot->_lChild = NULL; | |
| 3781 mroot->_rChild = NULL; | |
| 3782 delete mroot; | |
| 3783 _numleaves = numleaves; | |
| 3784 _numchilds = (_lChild ? 1 : 0) + (_rChild ? 1 : 0); | |
| 3785 } | |
| 3786 MatchRule::~MatchRule() { | |
| 3787 } | |
| 3788 | |
| 3789 // Recursive call collecting info on top-level operands, not transitive. | |
| 3790 // Implementation does not modify state of internal structures. | |
|
603
dbbe28fc66b5
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diff
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|
3791 void MatchRule::append_components(FormDict& locals, ComponentList& components, bool def_flag) const { |
| 0 | 3792 assert (_name != NULL, "MatchNode::build_components encountered empty node\n"); |
| 3793 | |
| 3794 MatchNode::append_components(locals, components, | |
| 3795 false /* not necessarily a def */); | |
| 3796 } | |
| 3797 | |
| 3798 // Recursive call on all operands' match rules in my match rule. | |
| 3799 // Implementation does not modify state of internal structures since they | |
| 3800 // can be shared. | |
| 3801 // The MatchNode that is called first treats its | |
| 3802 bool MatchRule::base_operand(uint &position0, FormDict &globals, | |
| 3803 const char *&result, const char * &name, | |
| 3804 const char * &opType)const{ | |
| 3805 uint position = position0; | |
| 3806 | |
| 3807 return (MatchNode::base_operand( position, globals, result, name, opType)); | |
| 3808 } | |
| 3809 | |
| 3810 | |
| 3811 bool MatchRule::is_base_register(FormDict &globals) const { | |
| 3812 uint position = 1; | |
| 3813 const char *result = NULL; | |
| 3814 const char *name = NULL; | |
| 3815 const char *opType = NULL; | |
| 3816 if (!base_operand(position, globals, result, name, opType)) { | |
| 3817 position = 0; | |
| 3818 if( base_operand(position, globals, result, name, opType) && | |
| 3819 (strcmp(opType,"RegI")==0 || | |
| 3820 strcmp(opType,"RegP")==0 || | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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diff
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|
3821 strcmp(opType,"RegN")==0 || |
| 0 | 3822 strcmp(opType,"RegL")==0 || |
| 3823 strcmp(opType,"RegF")==0 || | |
| 3824 strcmp(opType,"RegD")==0 || | |
| 3825 strcmp(opType,"Reg" )==0) ) { | |
| 3826 return 1; | |
| 3827 } | |
| 3828 } | |
| 3829 return 0; | |
| 3830 } | |
| 3831 | |
| 3832 Form::DataType MatchRule::is_base_constant(FormDict &globals) const { | |
| 3833 uint position = 1; | |
| 3834 const char *result = NULL; | |
| 3835 const char *name = NULL; | |
| 3836 const char *opType = NULL; | |
| 3837 if (!base_operand(position, globals, result, name, opType)) { | |
| 3838 position = 0; | |
| 3839 if (base_operand(position, globals, result, name, opType)) { | |
| 3840 return ideal_to_const_type(opType); | |
| 3841 } | |
| 3842 } | |
| 3843 return Form::none; | |
| 3844 } | |
| 3845 | |
| 3846 bool MatchRule::is_chain_rule(FormDict &globals) const { | |
| 3847 | |
| 3848 // Check for chain rule, and do not generate a match list for it | |
| 3849 if ((_lChild == NULL) && (_rChild == NULL) ) { | |
| 3850 const Form *form = globals[_opType]; | |
| 3851 // If this is ideal, then it is a base match, not a chain rule. | |
| 3852 if ( form && form->is_operand() && (!form->ideal_only())) { | |
| 3853 return true; | |
| 3854 } | |
| 3855 } | |
| 3856 // Check for "Set" form of chain rule, and do not generate a match list | |
| 3857 if (_rChild) { | |
| 3858 const char *rch = _rChild->_opType; | |
| 3859 const Form *form = globals[rch]; | |
| 3860 if ((!strcmp(_opType,"Set") && | |
| 3861 ((form) && form->is_operand()))) { | |
| 3862 return true; | |
| 3863 } | |
| 3864 } | |
| 3865 return false; | |
| 3866 } | |
| 3867 | |
| 3868 int MatchRule::is_ideal_copy() const { | |
| 3869 if( _rChild ) { | |
| 3870 const char *opType = _rChild->_opType; | |
|
342
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|
3871 #if 1 |
|
37f87013dfd8
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|
3872 if( strcmp(opType,"CastIP")==0 ) |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
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|
3873 return 1; |
|
37f87013dfd8
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|
3874 #else |
| 0 | 3875 if( strcmp(opType,"CastII")==0 ) |
| 3876 return 1; | |
| 3877 // Do not treat *CastPP this way, because it | |
| 3878 // may transfer a raw pointer to an oop. | |
| 3879 // If the register allocator were to coalesce this | |
| 3880 // into a single LRG, the GC maps would be incorrect. | |
| 3881 //if( strcmp(opType,"CastPP")==0 ) | |
| 3882 // return 1; | |
| 3883 //if( strcmp(opType,"CheckCastPP")==0 ) | |
| 3884 // return 1; | |
| 3885 // | |
| 3886 // Do not treat CastX2P or CastP2X this way, because | |
| 3887 // raw pointers and int types are treated differently | |
| 3888 // when saving local & stack info for safepoints in | |
| 3889 // Output(). | |
| 3890 //if( strcmp(opType,"CastX2P")==0 ) | |
| 3891 // return 1; | |
| 3892 //if( strcmp(opType,"CastP2X")==0 ) | |
| 3893 // return 1; | |
|
342
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|
3894 #endif |
| 0 | 3895 } |
| 3896 if( is_chain_rule(_AD.globalNames()) && | |
| 3897 _lChild && strncmp(_lChild->_opType,"stackSlot",9)==0 ) | |
| 3898 return 1; | |
| 3899 return 0; | |
| 3900 } | |
| 3901 | |
| 3902 | |
| 3903 int MatchRule::is_expensive() const { | |
| 3904 if( _rChild ) { | |
| 3905 const char *opType = _rChild->_opType; | |
| 3906 if( strcmp(opType,"AtanD")==0 || | |
| 3907 strcmp(opType,"CosD")==0 || | |
| 3908 strcmp(opType,"DivD")==0 || | |
| 3909 strcmp(opType,"DivF")==0 || | |
| 3910 strcmp(opType,"DivI")==0 || | |
| 3911 strcmp(opType,"ExpD")==0 || | |
| 3912 strcmp(opType,"LogD")==0 || | |
| 3913 strcmp(opType,"Log10D")==0 || | |
| 3914 strcmp(opType,"ModD")==0 || | |
| 3915 strcmp(opType,"ModF")==0 || | |
| 3916 strcmp(opType,"ModI")==0 || | |
| 3917 strcmp(opType,"PowD")==0 || | |
| 3918 strcmp(opType,"SinD")==0 || | |
| 3919 strcmp(opType,"SqrtD")==0 || | |
| 3920 strcmp(opType,"TanD")==0 || | |
| 3921 strcmp(opType,"ConvD2F")==0 || | |
| 3922 strcmp(opType,"ConvD2I")==0 || | |
| 3923 strcmp(opType,"ConvD2L")==0 || | |
| 3924 strcmp(opType,"ConvF2D")==0 || | |
| 3925 strcmp(opType,"ConvF2I")==0 || | |
| 3926 strcmp(opType,"ConvF2L")==0 || | |
| 3927 strcmp(opType,"ConvI2D")==0 || | |
| 3928 strcmp(opType,"ConvI2F")==0 || | |
| 3929 strcmp(opType,"ConvI2L")==0 || | |
| 3930 strcmp(opType,"ConvL2D")==0 || | |
| 3931 strcmp(opType,"ConvL2F")==0 || | |
| 3932 strcmp(opType,"ConvL2I")==0 || | |
| 247 | 3933 strcmp(opType,"DecodeN")==0 || |
| 3934 strcmp(opType,"EncodeP")==0 || | |
| 0 | 3935 strcmp(opType,"RoundDouble")==0 || |
| 3936 strcmp(opType,"RoundFloat")==0 || | |
| 3937 strcmp(opType,"ReverseBytesI")==0 || | |
| 3938 strcmp(opType,"ReverseBytesL")==0 || | |
|
1396
d7f654633cfe
6946040: add intrinsic for short and char reverseBytes
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parents:
986
diff
changeset
|
3939 strcmp(opType,"ReverseBytesUS")==0 || |
|
d7f654633cfe
6946040: add intrinsic for short and char reverseBytes
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parents:
986
diff
changeset
|
3940 strcmp(opType,"ReverseBytesS")==0 || |
| 0 | 3941 strcmp(opType,"Replicate16B")==0 || |
| 3942 strcmp(opType,"Replicate8B")==0 || | |
| 3943 strcmp(opType,"Replicate4B")==0 || | |
| 3944 strcmp(opType,"Replicate8C")==0 || | |
| 3945 strcmp(opType,"Replicate4C")==0 || | |
| 3946 strcmp(opType,"Replicate8S")==0 || | |
| 3947 strcmp(opType,"Replicate4S")==0 || | |
| 3948 strcmp(opType,"Replicate4I")==0 || | |
| 3949 strcmp(opType,"Replicate2I")==0 || | |
| 3950 strcmp(opType,"Replicate2L")==0 || | |
| 3951 strcmp(opType,"Replicate4F")==0 || | |
| 3952 strcmp(opType,"Replicate2F")==0 || | |
| 3953 strcmp(opType,"Replicate2D")==0 || | |
| 3954 0 /* 0 to line up columns nicely */ ) | |
| 3955 return 1; | |
| 3956 } | |
| 3957 return 0; | |
| 3958 } | |
| 3959 | |
| 3960 bool MatchRule::is_ideal_if() const { | |
| 3961 if( !_opType ) return false; | |
| 3962 return | |
| 3963 !strcmp(_opType,"If" ) || | |
| 3964 !strcmp(_opType,"CountedLoopEnd"); | |
| 3965 } | |
| 3966 | |
| 3967 bool MatchRule::is_ideal_fastlock() const { | |
| 3968 if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) { | |
| 3969 return (strcmp(_rChild->_opType,"FastLock") == 0); | |
| 3970 } | |
| 3971 return false; | |
| 3972 } | |
| 3973 | |
| 3974 bool MatchRule::is_ideal_membar() const { | |
| 3975 if( !_opType ) return false; | |
| 3976 return | |
| 3977 !strcmp(_opType,"MemBarAcquire" ) || | |
| 3978 !strcmp(_opType,"MemBarRelease" ) || | |
|
3849
f1c12354c3f7
7074017: Introduce MemBarAcquireLock/MemBarReleaseLock nodes for monitor enter/exit code paths
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parents:
3842
diff
changeset
|
3979 !strcmp(_opType,"MemBarAcquireLock") || |
|
f1c12354c3f7
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3842
diff
changeset
|
3980 !strcmp(_opType,"MemBarReleaseLock") || |
| 0 | 3981 !strcmp(_opType,"MemBarVolatile" ) || |
|
4763
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
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4120
diff
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|
3982 !strcmp(_opType,"MemBarCPUOrder" ) || |
|
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
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4120
diff
changeset
|
3983 !strcmp(_opType,"MemBarStoreStore" ); |
| 0 | 3984 } |
| 3985 | |
| 3986 bool MatchRule::is_ideal_loadPC() const { | |
| 3987 if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) { | |
| 3988 return (strcmp(_rChild->_opType,"LoadPC") == 0); | |
| 3989 } | |
| 3990 return false; | |
| 3991 } | |
| 3992 | |
| 3993 bool MatchRule::is_ideal_box() const { | |
| 3994 if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) { | |
| 3995 return (strcmp(_rChild->_opType,"Box") == 0); | |
| 3996 } | |
| 3997 return false; | |
| 3998 } | |
| 3999 | |
| 4000 bool MatchRule::is_ideal_goto() const { | |
| 4001 bool ideal_goto = false; | |
| 4002 | |
| 4003 if( _opType && (strcmp(_opType,"Goto") == 0) ) { | |
| 4004 ideal_goto = true; | |
| 4005 } | |
| 4006 return ideal_goto; | |
| 4007 } | |
| 4008 | |
| 4009 bool MatchRule::is_ideal_jump() const { | |
| 4010 if( _opType ) { | |
| 4011 if( !strcmp(_opType,"Jump") ) | |
| 4012 return true; | |
| 4013 } | |
| 4014 return false; | |
| 4015 } | |
| 4016 | |
| 4017 bool MatchRule::is_ideal_bool() const { | |
| 4018 if( _opType ) { | |
| 4019 if( !strcmp(_opType,"Bool") ) | |
| 4020 return true; | |
| 4021 } | |
| 4022 return false; | |
| 4023 } | |
| 4024 | |
| 4025 | |
| 4026 Form::DataType MatchRule::is_ideal_load() const { | |
| 4027 Form::DataType ideal_load = Form::none; | |
| 4028 | |
| 4029 if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) { | |
| 4030 const char *opType = _rChild->_opType; | |
| 4031 ideal_load = is_load_from_memory(opType); | |
| 4032 } | |
| 4033 | |
| 4034 return ideal_load; | |
| 4035 } | |
| 4036 | |
| 4037 | |
|
855
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
4038 bool MatchRule::skip_antidep_check() const { |
|
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
4039 // Some loads operate on what is effectively immutable memory so we |
|
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
4040 // should skip the anti dep computations. For some of these nodes |
|
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
4041 // the rewritable field keeps the anti dep logic from triggering but |
|
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
4042 // for certain kinds of LoadKlass it does not since they are |
|
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
4043 // actually reading memory which could be rewritten by the runtime, |
|
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
4044 // though never by generated code. This disables it uniformly for |
|
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
4045 // the nodes that behave like this: LoadKlass, LoadNKlass and |
|
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
4046 // LoadRange. |
|
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
4047 if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) { |
|
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
4048 const char *opType = _rChild->_opType; |
|
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
4049 if (strcmp("LoadKlass", opType) == 0 || |
|
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
4050 strcmp("LoadNKlass", opType) == 0 || |
|
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
4051 strcmp("LoadRange", opType) == 0) { |
|
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
4052 return true; |
|
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
4053 } |
|
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
4054 } |
|
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
4055 |
|
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
4056 return false; |
|
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
4057 } |
|
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
never
parents:
681
diff
changeset
|
4058 |
|
f9094a5e1c8a
6857159: local schedule failed with checkcast of Thread.currentThread()
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diff
changeset
|
4059 |
| 0 | 4060 Form::DataType MatchRule::is_ideal_store() const { |
| 4061 Form::DataType ideal_store = Form::none; | |
| 4062 | |
| 4063 if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) { | |
| 4064 const char *opType = _rChild->_opType; | |
| 4065 ideal_store = is_store_to_memory(opType); | |
| 4066 } | |
| 4067 | |
| 4068 return ideal_store; | |
| 4069 } | |
| 4070 | |
| 4071 | |
| 4072 void MatchRule::dump() { | |
| 4073 output(stderr); | |
| 4074 } | |
| 4075 | |
| 4076 void MatchRule::output(FILE *fp) { | |
| 4077 fprintf(fp,"MatchRule: ( %s",_name); | |
| 4078 if (_lChild) _lChild->output(fp); | |
| 4079 if (_rChild) _rChild->output(fp); | |
| 4080 fprintf(fp," )\n"); | |
| 4081 fprintf(fp," nesting depth = %d\n", _depth); | |
| 4082 if (_result) fprintf(fp," Result Type = %s", _result); | |
| 4083 fprintf(fp,"\n"); | |
| 4084 } | |
| 4085 | |
| 4086 //------------------------------Attribute-------------------------------------- | |
| 4087 Attribute::Attribute(char *id, char* val, int type) | |
| 4088 : _ident(id), _val(val), _atype(type) { | |
| 4089 } | |
| 4090 Attribute::~Attribute() { | |
| 4091 } | |
| 4092 | |
| 4093 int Attribute::int_val(ArchDesc &ad) { | |
| 4094 // Make sure it is an integer constant: | |
| 4095 int result = 0; | |
| 4096 if (!_val || !ADLParser::is_int_token(_val, result)) { | |
| 4097 ad.syntax_err(0, "Attribute %s must have an integer value: %s", | |
| 4098 _ident, _val ? _val : ""); | |
| 4099 } | |
| 4100 return result; | |
| 4101 } | |
| 4102 | |
| 4103 void Attribute::dump() { | |
| 4104 output(stderr); | |
| 4105 } // Debug printer | |
| 4106 | |
| 4107 // Write to output files | |
| 4108 void Attribute::output(FILE *fp) { | |
| 4109 fprintf(fp,"Attribute: %s %s\n", (_ident?_ident:""), (_val?_val:"")); | |
| 4110 } | |
| 4111 | |
| 4112 //------------------------------FormatRule---------------------------------- | |
| 4113 FormatRule::FormatRule(char *temp) | |
| 4114 : _temp(temp) { | |
| 4115 } | |
| 4116 FormatRule::~FormatRule() { | |
| 4117 } | |
| 4118 | |
| 4119 void FormatRule::dump() { | |
| 4120 output(stderr); | |
| 4121 } | |
| 4122 | |
| 4123 // Write to output files | |
| 4124 void FormatRule::output(FILE *fp) { | |
| 4125 fprintf(fp,"\nFormat Rule: \n%s", (_temp?_temp:"")); | |
| 4126 fprintf(fp,"\n"); | |
| 4127 } |