1 /*
2 * Copyright (c) 1998, 2025, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 // FORMS.CPP - Definitions for ADL Parser Forms Classes
26 #include "adlc.hpp"
27
28 #define remaining_buflen(buffer, position) (sizeof(buffer) - ((position) - (buffer)))
29
30 //==============================Instructions===================================
31 //------------------------------InstructForm-----------------------------------
32 InstructForm::InstructForm(const char *id, bool ideal_only)
33 : _ident(id), _ideal_only(ideal_only),
34 _localNames(cmpstr, hashstr, Form::arena),
35 _effects(cmpstr, hashstr, Form::arena),
36 _is_mach_constant(false),
37 _needs_constant_base(false),
38 _has_call(false)
39 {
40 _ftype = Form::INS;
41
42 _matrule = nullptr;
43 _insencode = nullptr;
44 _constant = nullptr;
45 _is_postalloc_expand = false;
46 _opcode = nullptr;
47 _size = nullptr;
48 _attribs = nullptr;
49 _predicate = nullptr;
50 _exprule = nullptr;
51 _rewrule = nullptr;
52 _format = nullptr;
53 _peephole = nullptr;
54 _ins_pipe = nullptr;
55 _flag = nullptr;
56 _uniq_idx = nullptr;
57 _num_uniq = 0;
58 _cisc_spill_operand = Not_cisc_spillable;// Which operand may cisc-spill
59 _cisc_spill_alternate = nullptr; // possible cisc replacement
60 _cisc_reg_mask_name = nullptr;
61 _is_cisc_alternate = false;
62 _is_short_branch = false;
63 _short_branch_form = nullptr;
64 _alignment = 1;
65 }
66
67 InstructForm::InstructForm(const char *id, InstructForm *instr, MatchRule *rule)
68 : _ident(id), _ideal_only(false),
69 _localNames(instr->_localNames),
70 _effects(instr->_effects),
71 _is_mach_constant(instr->_is_mach_constant),
72 _needs_constant_base(false),
73 _has_call(false)
74 {
75 _ftype = Form::INS;
76
77 _matrule = rule;
78 _insencode = instr->_insencode;
79 _constant = instr->_constant;
80 _is_postalloc_expand = instr->_is_postalloc_expand;
81 _opcode = instr->_opcode;
82 _size = instr->_size;
83 _attribs = instr->_attribs;
84 _predicate = instr->_predicate;
85 _exprule = instr->_exprule;
86 _rewrule = instr->_rewrule;
87 _format = instr->_format;
88 _peephole = instr->_peephole;
89 _ins_pipe = instr->_ins_pipe;
90 _flag = instr->_flag;
91 _uniq_idx = instr->_uniq_idx;
92 _num_uniq = instr->_num_uniq;
93 _cisc_spill_operand = Not_cisc_spillable; // Which operand may cisc-spill
94 _cisc_spill_alternate = nullptr; // possible cisc replacement
95 _cisc_reg_mask_name = nullptr;
96 _is_cisc_alternate = false;
97 _is_short_branch = false;
98 _short_branch_form = nullptr;
99 _alignment = 1;
100 // Copy parameters
101 const char *name;
102 instr->_parameters.reset();
103 for (; (name = instr->_parameters.iter()) != nullptr;)
104 _parameters.addName(name);
105 }
106
107 InstructForm::~InstructForm() {
108 }
109
110 InstructForm *InstructForm::is_instruction() const {
111 return (InstructForm*)this;
112 }
113
114 bool InstructForm::ideal_only() const {
115 return _ideal_only;
116 }
117
118 bool InstructForm::sets_result() const {
119 return (_matrule != nullptr && _matrule->sets_result());
120 }
121
122 bool InstructForm::needs_projections() {
123 _components.reset();
124 for( Component *comp; (comp = _components.iter()) != nullptr; ) {
125 if (comp->isa(Component::KILL)) {
126 return true;
127 }
128 }
129 return false;
130 }
131
132
133 bool InstructForm::has_temps() {
134 if (_matrule) {
135 // Examine each component to see if it is a TEMP
136 _components.reset();
137 // Skip the first component, if already handled as (SET dst (...))
138 Component *comp = nullptr;
139 if (sets_result()) comp = _components.iter();
140 while ((comp = _components.iter()) != nullptr) {
141 if (comp->isa(Component::TEMP)) {
142 return true;
143 }
144 }
145 }
146
147 return false;
148 }
149
150 uint InstructForm::num_defs_or_kills() {
151 uint defs_or_kills = 0;
152
153 _components.reset();
154 for( Component *comp; (comp = _components.iter()) != nullptr; ) {
155 if( comp->isa(Component::DEF) || comp->isa(Component::KILL) ) {
156 ++defs_or_kills;
157 }
158 }
159
160 return defs_or_kills;
161 }
162
163 // This instruction has an expand rule?
164 bool InstructForm::expands() const {
165 return ( _exprule != nullptr );
166 }
167
168 // This instruction has a late expand rule?
169 bool InstructForm::postalloc_expands() const {
170 return _is_postalloc_expand;
171 }
172
173 // This instruction has a peephole rule?
174 Peephole *InstructForm::peepholes() const {
175 return _peephole;
176 }
177
178 // This instruction has a peephole rule?
179 void InstructForm::append_peephole(Peephole *peephole) {
180 if( _peephole == nullptr ) {
181 _peephole = peephole;
182 } else {
183 _peephole->append_peephole(peephole);
184 }
185 }
186
187
188 // ideal opcode enumeration
189 const char *InstructForm::ideal_Opcode( FormDict &globalNames ) const {
190 if( !_matrule ) return "Node"; // Something weird
191 // Chain rules do not really have ideal Opcodes; use their source
192 // operand ideal Opcode instead.
193 if( is_simple_chain_rule(globalNames) ) {
194 const char *src = _matrule->_rChild->_opType;
195 OperandForm *src_op = globalNames[src]->is_operand();
196 assert( src_op, "Not operand class of chain rule" );
197 if( !src_op->_matrule ) return "Node";
198 return src_op->_matrule->_opType;
199 }
200 // Operand chain rules do not really have ideal Opcodes
201 if( _matrule->is_chain_rule(globalNames) )
202 return "Node";
203 return strcmp(_matrule->_opType,"Set")
204 ? _matrule->_opType
205 : _matrule->_rChild->_opType;
206 }
207
208 // Recursive check on all operands' match rules in my match rule
209 bool InstructForm::is_pinned(FormDict &globals) {
210 if ( ! _matrule) return false;
211
212 int index = 0;
213 if (_matrule->find_type("Goto", index)) return true;
214 if (_matrule->find_type("If", index)) return true;
215 if (_matrule->find_type("CountedLoopEnd", index)) return true;
216 if (_matrule->find_type("Return", index)) return true;
217 if (_matrule->find_type("Rethrow", index)) return true;
218 if (_matrule->find_type("TailCall", index)) return true;
219 if (_matrule->find_type("TailJump", index)) return true;
220 if (_matrule->find_type("ForwardException", index)) return true;
221 if (_matrule->find_type("Halt", index)) return true;
222 if (_matrule->find_type("Jump", index)) return true;
223
224 return is_parm(globals);
225 }
226
227 // Recursive check on all operands' match rules in my match rule
228 bool InstructForm::is_projection(FormDict &globals) {
229 if ( ! _matrule) return false;
230
231 int index = 0;
232 if (_matrule->find_type("Goto", index)) return true;
233 if (_matrule->find_type("Return", index)) return true;
234 if (_matrule->find_type("Rethrow", index)) return true;
235 if (_matrule->find_type("TailCall", index)) return true;
236 if (_matrule->find_type("TailJump", index)) return true;
237 if (_matrule->find_type("ForwardException", index)) return true;
238 if (_matrule->find_type("Halt", index)) return true;
239
240 return false;
241 }
242
243 // Recursive check on all operands' match rules in my match rule
244 bool InstructForm::is_parm(FormDict &globals) {
245 if ( ! _matrule) return false;
246
247 int index = 0;
248 if (_matrule->find_type("Parm",index)) return true;
249
250 return false;
251 }
252
253 bool InstructForm::is_ideal_negD() const {
254 return (_matrule && _matrule->_rChild && strcmp(_matrule->_rChild->_opType, "NegD") == 0);
255 }
256
257 // Return 'true' if this instruction matches an ideal 'Copy*' node
258 int InstructForm::is_ideal_copy() const {
259 return _matrule ? _matrule->is_ideal_copy() : 0;
260 }
261
262 // Return 'true' if this instruction is too complex to rematerialize.
263 int InstructForm::is_expensive() const {
264 // We can prove it is cheap if it has an empty encoding.
265 // This helps with platform-specific nops like ThreadLocal and RoundFloat.
266 if (is_empty_encoding())
267 return 0;
268
269 if (is_tls_instruction())
270 return 1;
271
272 if (_matrule == nullptr) return 0;
273
274 return _matrule->is_expensive();
275 }
276
277 // Has an empty encoding if _size is a constant zero or there
278 // are no ins_encode tokens.
279 int InstructForm::is_empty_encoding() const {
280 if (_insencode != nullptr) {
281 _insencode->reset();
282 if (_insencode->encode_class_iter() == nullptr) {
283 return 1;
284 }
285 }
286 if (_size != nullptr && strcmp(_size, "0") == 0) {
287 return 1;
288 }
289 return 0;
290 }
291
292 int InstructForm::is_tls_instruction() const {
293 if (_ident != nullptr &&
294 ( ! strcmp( _ident,"tlsLoadP") ||
295 ! strncmp(_ident,"tlsLoadP_",9)) ) {
296 return 1;
297 }
298
299 if (_matrule != nullptr && _insencode != nullptr) {
300 const char* opType = _matrule->_opType;
301 if (strcmp(opType, "Set")==0)
302 opType = _matrule->_rChild->_opType;
303 if (strcmp(opType,"ThreadLocal")==0) {
304 fprintf(stderr, "Warning: ThreadLocal instruction %s should be named 'tlsLoadP_*'\n",
305 (_ident == nullptr ? "nullptr" : _ident));
306 return 1;
307 }
308 }
309
310 return 0;
311 }
312
313
314 // Return 'true' if this instruction matches an ideal 'If' node
315 bool InstructForm::is_ideal_if() const {
316 if( _matrule == nullptr ) return false;
317
318 return _matrule->is_ideal_if();
319 }
320
321 // Return 'true' if this instruction matches an ideal 'FastLock' node
322 bool InstructForm::is_ideal_fastlock() const {
323 if( _matrule == nullptr ) return false;
324
325 return _matrule->is_ideal_fastlock();
326 }
327
328 // Return 'true' if this instruction matches an ideal 'MemBarXXX' node
329 bool InstructForm::is_ideal_membar() const {
330 if( _matrule == nullptr ) return false;
331
332 return _matrule->is_ideal_membar();
333 }
334
335 // Return 'true' if this instruction matches an ideal 'LoadPC' node
336 bool InstructForm::is_ideal_loadPC() const {
337 if( _matrule == nullptr ) return false;
338
339 return _matrule->is_ideal_loadPC();
340 }
341
342 // Return 'true' if this instruction matches an ideal 'Box' node
343 bool InstructForm::is_ideal_box() const {
344 if( _matrule == nullptr ) return false;
345
346 return _matrule->is_ideal_box();
347 }
348
349 // Return 'true' if this instruction matches an ideal 'Goto' node
350 bool InstructForm::is_ideal_goto() const {
351 if( _matrule == nullptr ) return false;
352
353 return _matrule->is_ideal_goto();
354 }
355
356 // Return 'true' if this instruction matches an ideal 'Jump' node
357 bool InstructForm::is_ideal_jump() const {
358 if( _matrule == nullptr ) return false;
359
360 return _matrule->is_ideal_jump();
361 }
362
363 // Return 'true' if instruction matches ideal 'If' | 'Goto' | 'CountedLoopEnd'
364 bool InstructForm::is_ideal_branch() const {
365 if( _matrule == nullptr ) return false;
366
367 return _matrule->is_ideal_if() || _matrule->is_ideal_goto();
368 }
369
370
371 // Return 'true' if this instruction matches an ideal 'Return' node
372 bool InstructForm::is_ideal_return() const {
373 if( _matrule == nullptr ) return false;
374
375 // Check MatchRule to see if the first entry is the ideal "Return" node
376 int index = 0;
377 if (_matrule->find_type("Return",index)) return true;
378 if (_matrule->find_type("Rethrow",index)) return true;
379 if (_matrule->find_type("TailCall",index)) return true;
380 if (_matrule->find_type("TailJump",index)) return true;
381 if (_matrule->find_type("ForwardException", index)) return true;
382
383 return false;
384 }
385
386 // Return 'true' if this instruction matches an ideal 'Halt' node
387 bool InstructForm::is_ideal_halt() const {
388 int index = 0;
389 return _matrule && _matrule->find_type("Halt",index);
390 }
391
392 // Return 'true' if this instruction matches an ideal 'SafePoint' node
393 bool InstructForm::is_ideal_safepoint() const {
394 int index = 0;
395 return _matrule && _matrule->find_type("SafePoint",index);
396 }
397
398 // Return 'true' if this instruction matches an ideal 'Nop' node
399 bool InstructForm::is_ideal_nop() const {
400 return _ident && _ident[0] == 'N' && _ident[1] == 'o' && _ident[2] == 'p' && _ident[3] == '_';
401 }
402
403 bool InstructForm::is_ideal_control() const {
404 if ( ! _matrule) return false;
405
406 return is_ideal_return() || is_ideal_branch() || _matrule->is_ideal_jump() || is_ideal_halt();
407 }
408
409 // Return 'true' if this instruction matches an ideal 'Call' node
410 Form::CallType InstructForm::is_ideal_call() const {
411 if( _matrule == nullptr ) return Form::invalid_type;
412
413 // Check MatchRule to see if the first entry is the ideal "Call" node
414 int idx = 0;
415 if(_matrule->find_type("CallStaticJava",idx)) return Form::JAVA_STATIC;
416 idx = 0;
417 if(_matrule->find_type("Lock",idx)) return Form::JAVA_STATIC;
418 idx = 0;
419 if(_matrule->find_type("Unlock",idx)) return Form::JAVA_STATIC;
420 idx = 0;
421 if(_matrule->find_type("CallDynamicJava",idx)) return Form::JAVA_DYNAMIC;
422 idx = 0;
423 if(_matrule->find_type("CallRuntime",idx)) return Form::JAVA_RUNTIME;
424 idx = 0;
425 if(_matrule->find_type("CallLeaf",idx)) return Form::JAVA_LEAF;
426 idx = 0;
427 if(_matrule->find_type("CallLeafNoFP",idx)) return Form::JAVA_LEAF;
428 idx = 0;
429 if(_matrule->find_type("CallLeafVector",idx)) return Form::JAVA_LEAF;
430 idx = 0;
431
432 return Form::invalid_type;
433 }
434
435 // Return 'true' if this instruction matches an ideal 'Load?' node
436 Form::DataType InstructForm::is_ideal_load() const {
437 if( _matrule == nullptr ) return Form::none;
438
439 return _matrule->is_ideal_load();
440 }
441
442 // Return 'true' if this instruction matches an ideal 'LoadKlass' node
443 bool InstructForm::skip_antidep_check() const {
444 if( _matrule == nullptr ) return false;
445
446 return _matrule->skip_antidep_check();
447 }
448
449 // Return 'true' if this instruction matches an ideal 'Load?' node
450 Form::DataType InstructForm::is_ideal_store() const {
451 if( _matrule == nullptr ) return Form::none;
452
453 return _matrule->is_ideal_store();
454 }
455
456 // Return 'true' if this instruction matches an ideal vector node
457 bool InstructForm::is_vector() const {
458 if( _matrule == nullptr ) return false;
459
460 return _matrule->is_vector();
461 }
462
463
464 // Return the input register that must match the output register
465 // If this is not required, return 0
466 uint InstructForm::two_address(FormDict &globals) {
467 uint matching_input = 0;
468 if(_components.count() == 0) return 0;
469
470 _components.reset();
471 Component *comp = _components.iter();
472 // Check if there is a DEF
473 if( comp->isa(Component::DEF) ) {
474 // Check that this is a register
475 const char *def_type = comp->_type;
476 const Form *form = globals[def_type];
477 OperandForm *op = form->is_operand();
478 if( op ) {
479 if( op->constrained_reg_class() != nullptr &&
480 op->interface_type(globals) == Form::register_interface ) {
481 // Remember the local name for equality test later
482 const char *def_name = comp->_name;
483 // Check if a component has the same name and is a USE
484 do {
485 if( comp->isa(Component::USE) && strcmp(comp->_name,def_name)==0 ) {
486 return operand_position_format(def_name);
487 }
488 } while( (comp = _components.iter()) != nullptr);
489 }
490 }
491 }
492
493 return 0;
494 }
495
496
497 // when chaining a constant to an instruction, returns 'true' and sets opType
498 Form::DataType InstructForm::is_chain_of_constant(FormDict &globals) {
499 const char *dummy = nullptr;
500 const char *dummy2 = nullptr;
501 return is_chain_of_constant(globals, dummy, dummy2);
502 }
503 Form::DataType InstructForm::is_chain_of_constant(FormDict &globals,
504 const char * &opTypeParam) {
505 const char *result = nullptr;
506
507 return is_chain_of_constant(globals, opTypeParam, result);
508 }
509
510 Form::DataType InstructForm::is_chain_of_constant(FormDict &globals,
511 const char * &opTypeParam, const char * &resultParam) {
512 Form::DataType data_type = Form::none;
513 if ( ! _matrule) return data_type;
514
515 // !!!!!
516 // The source of the chain rule is 'position = 1'
517 uint position = 1;
518 const char *result = nullptr;
519 const char *name = nullptr;
520 const char *opType = nullptr;
521 // Here base_operand is looking for an ideal type to be returned (opType).
522 if ( _matrule->is_chain_rule(globals)
523 && _matrule->base_operand(position, globals, result, name, opType) ) {
524 data_type = ideal_to_const_type(opType);
525
526 // if it isn't an ideal constant type, just return
527 if ( data_type == Form::none ) return data_type;
528
529 // Ideal constant types also adjust the opType parameter.
530 resultParam = result;
531 opTypeParam = opType;
532 return data_type;
533 }
534
535 return data_type;
536 }
537
538 // Check if a simple chain rule
539 bool InstructForm::is_simple_chain_rule(FormDict &globals) const {
540 if( _matrule && _matrule->sets_result()
541 && _matrule->_rChild->_lChild == nullptr
542 && globals[_matrule->_rChild->_opType]
543 && globals[_matrule->_rChild->_opType]->is_opclass() ) {
544 return true;
545 }
546 return false;
547 }
548
549 // check for structural rematerialization
550 bool InstructForm::rematerialize(FormDict &globals, RegisterForm *registers ) {
551 bool rematerialize = false;
552
553 Form::DataType data_type = is_chain_of_constant(globals);
554 if( data_type != Form::none )
555 rematerialize = true;
556
557 // Constants
558 if( _components.count() == 1 && _components[0]->is(Component::USE_DEF) )
559 rematerialize = true;
560
561 // Pseudo-constants (values easily available to the runtime)
562 if (is_empty_encoding() && is_tls_instruction())
563 rematerialize = true;
564
565 // 1-input, 1-output, such as copies or increments.
566 if( _components.count() == 2 &&
567 _components[0]->is(Component::DEF) &&
568 _components[1]->isa(Component::USE) )
569 rematerialize = true;
570
571 // Check for an ideal 'Load?' and eliminate rematerialize option
572 if ( is_ideal_load() != Form::none || // Ideal load? Do not rematerialize
573 is_ideal_copy() != Form::none || // Ideal copy? Do not rematerialize
574 is_expensive() != Form::none) { // Expensive? Do not rematerialize
575 rematerialize = false;
576 }
577
578 // Always rematerialize the flags. They are more expensive to save &
579 // restore than to recompute (and possibly spill the compare's inputs).
580 if( _components.count() >= 1 ) {
581 Component *c = _components[0];
582 const Form *form = globals[c->_type];
583 OperandForm *opform = form->is_operand();
584 if( opform ) {
585 // Avoid the special stack_slots register classes
586 const char *rc_name = opform->constrained_reg_class();
587 if( rc_name ) {
588 if( strcmp(rc_name,"stack_slots") ) {
589 // Check for ideal_type of RegFlags
590 const char *type = opform->ideal_type( globals, registers );
591 if( (type != nullptr) && !strcmp(type, "RegFlags") )
592 rematerialize = true;
593 } else
594 rematerialize = false; // Do not rematerialize things target stk
595 }
596 }
597 }
598
599 return rematerialize;
600 }
601
602 // loads from memory, so must check for anti-dependence
603 bool InstructForm::needs_anti_dependence_check(FormDict &globals) const {
604 if ( skip_antidep_check() ) return false;
605
606 // Machine independent loads must be checked for anti-dependences
607 if( is_ideal_load() != Form::none ) return true;
608
609 // !!!!! !!!!! !!!!!
610 // TEMPORARY
611 // if( is_simple_chain_rule(globals) ) return false;
612
613 // String.(compareTo/equals/indexOf/hashCode) and Arrays.(equals/hashCode)
614 // use many memorys edges, but writes none
615 if( _matrule && _matrule->_rChild &&
616 ( strcmp(_matrule->_rChild->_opType,"StrComp" )==0 ||
617 strcmp(_matrule->_rChild->_opType,"StrEquals" )==0 ||
618 strcmp(_matrule->_rChild->_opType,"StrIndexOf" )==0 ||
619 strcmp(_matrule->_rChild->_opType,"StrIndexOfChar" )==0 ||
620 strcmp(_matrule->_rChild->_opType,"CountPositives" )==0 ||
621 strcmp(_matrule->_rChild->_opType,"AryEq" )==0 ||
622 strcmp(_matrule->_rChild->_opType,"VectorizedHashCode")==0 ))
623 return true;
624
625 // Check if instruction has a USE of a memory operand class, but no defs
626 bool USE_of_memory = false;
627 bool DEF_of_memory = false;
628 Component *comp = nullptr;
629 ComponentList &components = (ComponentList &)_components;
630
631 components.reset();
632 while( (comp = components.iter()) != nullptr ) {
633 const Form *form = globals[comp->_type];
634 if( !form ) continue;
635 OpClassForm *op = form->is_opclass();
636 if( !op ) continue;
637 if( form->interface_type(globals) == Form::memory_interface ) {
638 if( comp->isa(Component::USE) ) USE_of_memory = true;
639 if( comp->isa(Component::DEF) ) {
640 OperandForm *oper = form->is_operand();
641 if( oper && oper->is_user_name_for_sReg() ) {
642 // Stack slots are unaliased memory handled by allocator
643 oper = oper; // debug stopping point !!!!!
644 } else {
645 DEF_of_memory = true;
646 }
647 }
648 }
649 }
650 return (USE_of_memory && !DEF_of_memory);
651 }
652
653
654 int InstructForm::memory_operand(FormDict &globals) const {
655 // Machine independent loads must be checked for anti-dependences
656 // Check if instruction has a USE of a memory operand class, or a def.
657 int USE_of_memory = 0;
658 int DEF_of_memory = 0;
659 const char* last_memory_DEF = nullptr; // to test DEF/USE pairing in asserts
660 const char* last_memory_USE = nullptr;
661 Component *unique = nullptr;
662 Component *comp = nullptr;
663 ComponentList &components = (ComponentList &)_components;
664
665 components.reset();
666 while( (comp = components.iter()) != nullptr ) {
667 const Form *form = globals[comp->_type];
668 if( !form ) continue;
669 OpClassForm *op = form->is_opclass();
670 if( !op ) continue;
671 if( op->stack_slots_only(globals) ) continue;
672 if( form->interface_type(globals) == Form::memory_interface ) {
673 if( comp->isa(Component::DEF) ) {
674 last_memory_DEF = comp->_name;
675 DEF_of_memory++;
676 unique = comp;
677 } else if( comp->isa(Component::USE) ) {
678 if( last_memory_DEF != nullptr ) {
679 assert(0 == strcmp(last_memory_DEF, comp->_name), "every memory DEF is followed by a USE of the same name");
680 last_memory_DEF = nullptr;
681 }
682 // Handles same memory being used multiple times in the case of BMI1 instructions.
683 if (last_memory_USE != nullptr) {
684 if (strcmp(comp->_name, last_memory_USE) != 0) {
685 USE_of_memory++;
686 }
687 } else {
688 USE_of_memory++;
689 }
690 last_memory_USE = comp->_name;
691
692 if (DEF_of_memory == 0) // defs take precedence
693 unique = comp;
694 } else {
695 assert(last_memory_DEF == nullptr, "unpaired memory DEF");
696 }
697 }
698 }
699 assert(last_memory_DEF == nullptr, "unpaired memory DEF");
700 assert(USE_of_memory >= DEF_of_memory, "unpaired memory DEF");
701 USE_of_memory -= DEF_of_memory; // treat paired DEF/USE as one occurrence
702 if( (USE_of_memory + DEF_of_memory) > 0 ) {
703 if( is_simple_chain_rule(globals) ) {
704 //fprintf(stderr, "Warning: chain rule is not really a memory user.\n");
705 //((InstructForm*)this)->dump();
706 // Preceding code prints nothing on sparc and these insns on intel:
707 // leaP8 leaP32 leaPIdxOff leaPIdxScale leaPIdxScaleOff leaP8 leaP32
708 // leaPIdxOff leaPIdxScale leaPIdxScaleOff
709 return NO_MEMORY_OPERAND;
710 }
711
712 if( DEF_of_memory == 1 ) {
713 assert(unique != nullptr, "");
714 if( USE_of_memory == 0 ) {
715 // unique def, no uses
716 } else {
717 // // unique def, some uses
718 // // must return bottom unless all uses match def
719 // unique = nullptr;
720 #ifdef S390
721 // This case is important for move instructions on s390x.
722 // On other platforms (e.g. x86), all uses always match the def.
723 unique = nullptr;
724 #endif
725 }
726 } else if( DEF_of_memory > 0 ) {
727 // multiple defs, don't care about uses
728 unique = nullptr;
729 } else if( USE_of_memory == 1) {
730 // unique use, no defs
731 assert(unique != nullptr, "");
732 } else if( USE_of_memory > 0 ) {
733 // multiple uses, no defs
734 unique = nullptr;
735 } else {
736 assert(false, "bad case analysis");
737 }
738 // process the unique DEF or USE, if there is one
739 if( unique == nullptr ) {
740 return MANY_MEMORY_OPERANDS;
741 } else {
742 int pos = components.operand_position(unique->_name);
743 if( unique->isa(Component::DEF) ) {
744 pos += 1; // get corresponding USE from DEF
745 }
746 assert(pos >= 1, "I was just looking at it!");
747 return pos;
748 }
749 }
750
751 // missed the memory op??
752 if( true ) { // %%% should not be necessary
753 if( is_ideal_store() != Form::none ) {
754 fprintf(stderr, "Warning: cannot find memory opnd in instr.\n");
755 ((InstructForm*)this)->dump();
756 // pretend it has multiple defs and uses
757 return MANY_MEMORY_OPERANDS;
758 }
759 if( is_ideal_load() != Form::none ) {
760 fprintf(stderr, "Warning: cannot find memory opnd in instr.\n");
761 ((InstructForm*)this)->dump();
762 // pretend it has multiple uses and no defs
763 return MANY_MEMORY_OPERANDS;
764 }
765 }
766
767 return NO_MEMORY_OPERAND;
768 }
769
770 // This instruction captures the machine-independent bottom_type
771 // Expected use is for pointer vs oop determination for LoadP
772 bool InstructForm::captures_bottom_type(FormDict &globals) const {
773 if (_matrule && _matrule->_rChild &&
774 (!strcmp(_matrule->_rChild->_opType,"CastPP") || // new result type
775 !strcmp(_matrule->_rChild->_opType,"CastDD") ||
776 !strcmp(_matrule->_rChild->_opType,"CastFF") ||
777 !strcmp(_matrule->_rChild->_opType,"CastII") ||
778 !strcmp(_matrule->_rChild->_opType,"CastLL") ||
779 !strcmp(_matrule->_rChild->_opType,"CastVV") ||
780 !strcmp(_matrule->_rChild->_opType,"CastX2P") || // new result type
781 !strcmp(_matrule->_rChild->_opType,"DecodeN") ||
782 !strcmp(_matrule->_rChild->_opType,"EncodeP") ||
783 !strcmp(_matrule->_rChild->_opType,"DecodeNKlass") ||
784 !strcmp(_matrule->_rChild->_opType,"EncodePKlass") ||
785 !strcmp(_matrule->_rChild->_opType,"LoadN") ||
786 !strcmp(_matrule->_rChild->_opType,"LoadNKlass") ||
787 !strcmp(_matrule->_rChild->_opType,"CreateEx") || // type of exception
788 !strcmp(_matrule->_rChild->_opType,"CheckCastPP") ||
789 !strcmp(_matrule->_rChild->_opType,"GetAndSetP") ||
790 !strcmp(_matrule->_rChild->_opType,"GetAndSetN") ||
791 !strcmp(_matrule->_rChild->_opType,"RotateLeft") ||
792 !strcmp(_matrule->_rChild->_opType,"RotateRight") ||
793 #if INCLUDE_SHENANDOAHGC
794 !strcmp(_matrule->_rChild->_opType,"ShenandoahCompareAndExchangeP") ||
795 !strcmp(_matrule->_rChild->_opType,"ShenandoahCompareAndExchangeN") ||
796 #endif
797 !strcmp(_matrule->_rChild->_opType,"StrInflatedCopy") ||
798 !strcmp(_matrule->_rChild->_opType,"VectorCmpMasked")||
799 !strcmp(_matrule->_rChild->_opType,"VectorMaskGen")||
800 !strcmp(_matrule->_rChild->_opType,"VerifyVectorAlignment")||
801 !strcmp(_matrule->_rChild->_opType,"CompareAndExchangeP") ||
802 !strcmp(_matrule->_rChild->_opType,"CompareAndExchangeN"))) return true;
803 else if ( is_ideal_load() == Form::idealP ) return true;
804 else if ( is_ideal_store() != Form::none ) return true;
805
806 if (needs_base_oop_edge(globals)) return true;
807
808 if (is_vector()) return true;
809 if (is_mach_constant()) return true;
810
811 return false;
812 }
813
814
815 // Access instr_cost attribute or return null.
816 const char* InstructForm::cost() {
817 for (Attribute* cur = _attribs; cur != nullptr; cur = (Attribute*)cur->_next) {
818 if( strcmp(cur->_ident,AttributeForm::_ins_cost) == 0 ) {
819 return cur->_val;
820 }
821 }
822 return nullptr;
823 }
824
825 // Return count of top-level operands.
826 uint InstructForm::num_opnds() {
827 int num_opnds = _components.num_operands();
828
829 // Need special handling for matching some ideal nodes
830 // i.e. Matching a return node
831 /*
832 if( _matrule ) {
833 if( strcmp(_matrule->_opType,"Return" )==0 ||
834 strcmp(_matrule->_opType,"Halt" )==0 )
835 return 3;
836 }
837 */
838 return num_opnds;
839 }
840
841 const char* InstructForm::opnd_ident(int idx) {
842 return _components.at(idx)->_name;
843 }
844
845 const char* InstructForm::unique_opnd_ident(uint idx) {
846 uint i;
847 for (i = 1; i < num_opnds(); ++i) {
848 if (unique_opnds_idx(i) == idx) {
849 break;
850 }
851 }
852 return (_components.at(i) != nullptr) ? _components.at(i)->_name : "";
853 }
854
855 // Return count of unmatched operands.
856 uint InstructForm::num_post_match_opnds() {
857 uint num_post_match_opnds = _components.count();
858 uint num_match_opnds = _components.match_count();
859 num_post_match_opnds = num_post_match_opnds - num_match_opnds;
860
861 return num_post_match_opnds;
862 }
863
864 // Return the number of leaves below this complex operand
865 uint InstructForm::num_consts(FormDict &globals) const {
866 if ( ! _matrule) return 0;
867
868 // This is a recursive invocation on all operands in the matchrule
869 return _matrule->num_consts(globals);
870 }
871
872 // Constants in match rule with specified type
873 uint InstructForm::num_consts(FormDict &globals, Form::DataType type) const {
874 if ( ! _matrule) return 0;
875
876 // This is a recursive invocation on all operands in the matchrule
877 return _matrule->num_consts(globals, type);
878 }
879
880
881 // Return the register class associated with 'leaf'.
882 const char *InstructForm::out_reg_class(FormDict &globals) {
883 assert( false, "InstructForm::out_reg_class(FormDict &globals); Not Implemented");
884
885 return nullptr;
886 }
887
888
889
890 // Lookup the starting position of inputs we are interested in wrt. ideal nodes
891 uint InstructForm::oper_input_base(FormDict &globals) {
892 if( !_matrule ) return 1; // Skip control for most nodes
893
894 // Need special handling for matching some ideal nodes
895 // i.e. Matching a return node
896 if( strcmp(_matrule->_opType,"Return" )==0 ||
897 strcmp(_matrule->_opType,"Rethrow" )==0 ||
898 strcmp(_matrule->_opType,"TailCall" )==0 ||
899 strcmp(_matrule->_opType,"TailJump" )==0 ||
900 strcmp(_matrule->_opType,"ForwardException")==0 ||
901 strcmp(_matrule->_opType,"SafePoint" )==0 ||
902 strcmp(_matrule->_opType,"Halt" )==0 )
903 return AdlcVMDeps::Parms; // Skip the machine-state edges
904
905 if( _matrule->_rChild &&
906 ( strcmp(_matrule->_rChild->_opType,"AryEq" )==0 ||
907 strcmp(_matrule->_rChild->_opType,"VectorizedHashCode")==0 ||
908 strcmp(_matrule->_rChild->_opType,"StrComp" )==0 ||
909 strcmp(_matrule->_rChild->_opType,"StrEquals" )==0 ||
910 strcmp(_matrule->_rChild->_opType,"StrInflatedCopy" )==0 ||
911 strcmp(_matrule->_rChild->_opType,"StrCompressedCopy" )==0 ||
912 strcmp(_matrule->_rChild->_opType,"StrIndexOf")==0 ||
913 strcmp(_matrule->_rChild->_opType,"StrIndexOfChar")==0 ||
914 strcmp(_matrule->_rChild->_opType,"CountPositives")==0 ||
915 strcmp(_matrule->_rChild->_opType,"EncodeISOArray")==0)) {
916 // String.(compareTo/equals/indexOf/hashCode) and Arrays.equals
917 // and sun.nio.cs.iso8859_1$Encoder.EncodeISOArray
918 // take 1 control and 1 memory edges.
919 // Also String.(compressedCopy/inflatedCopy).
920 return 2;
921 }
922
923 // Check for handling of 'Memory' input/edge in the ideal world.
924 // The AD file writer is shielded from knowledge of these edges.
925 int base = 1; // Skip control
926 base += _matrule->needs_ideal_memory_edge(globals);
927
928 // Also skip the base-oop value for uses of derived oops.
929 // The AD file writer is shielded from knowledge of these edges.
930 base += needs_base_oop_edge(globals);
931
932 return base;
933 }
934
935 // This function determines the order of the MachOper in _opnds[]
936 // by writing the operand names into the _components list.
937 //
938 // Implementation does not modify state of internal structures
939 void InstructForm::build_components() {
940 // Add top-level operands to the components
941 if (_matrule) _matrule->append_components(_localNames, _components);
942
943 // Add parameters that "do not appear in match rule".
944 bool has_temp = false;
945 const char *name;
946 const char *kill_name = nullptr;
947 for (_parameters.reset(); (name = _parameters.iter()) != nullptr;) {
948 OpClassForm *opForm = _localNames[name]->is_opclass();
949 assert(opForm != nullptr, "sanity");
950
951 Effect* e = nullptr;
952 {
953 const Form* form = _effects[name];
954 e = form ? form->is_effect() : nullptr;
955 }
956
957 if (e != nullptr) {
958 has_temp |= e->is(Component::TEMP);
959
960 // KILLs must be declared after any TEMPs because TEMPs are real
961 // uses so their operand numbering must directly follow the real
962 // inputs from the match rule. Fixing the numbering seems
963 // complex so simply enforce the restriction during parse.
964 if (kill_name != nullptr &&
965 e->isa(Component::TEMP) && !e->isa(Component::DEF)) {
966 OpClassForm* kill = _localNames[kill_name]->is_opclass();
967 assert(kill != nullptr, "sanity");
968 globalAD->syntax_err(_linenum, "%s: %s %s must be at the end of the argument list\n",
969 _ident, kill->_ident, kill_name);
970 } else if (e->isa(Component::KILL) && !e->isa(Component::USE)) {
971 kill_name = name;
972 }
973 }
974
975 const Component *component = _components.search(name);
976 if ( component == nullptr ) {
977 if (e) {
978 _components.insert(name, opForm->_ident, e->_use_def, false);
979 component = _components.search(name);
980 if (component->isa(Component::USE) && !component->isa(Component::TEMP) && _matrule) {
981 const Form *form = globalAD->globalNames()[component->_type];
982 assert( form, "component type must be a defined form");
983 OperandForm *op = form->is_operand();
984 if (op->_interface && op->_interface->is_RegInterface()) {
985 globalAD->syntax_err(_linenum, "%s: illegal USE of non-input: %s %s\n",
986 _ident, opForm->_ident, name);
987 }
988 }
989 } else {
990 // This would be a nice warning but it triggers in a few places in a benign way
991 // if (_matrule != nullptr && !expands()) {
992 // globalAD->syntax_err(_linenum, "%s: %s %s not mentioned in effect or match rule\n",
993 // _ident, opForm->_ident, name);
994 // }
995 _components.insert(name, opForm->_ident, Component::INVALID, false);
996 }
997 }
998 else if (e) {
999 // Component was found in the list
1000 // Check if there is a new effect that requires an extra component.
1001 // This happens when adding 'USE' to a component that is not yet one.
1002 if ((!component->isa( Component::USE) && ((e->_use_def & Component::USE) != 0))) {
1003 if (component->isa(Component::USE) && _matrule) {
1004 const Form *form = globalAD->globalNames()[component->_type];
1005 assert( form, "component type must be a defined form");
1006 OperandForm *op = form->is_operand();
1007 if (op->_interface && op->_interface->is_RegInterface()) {
1008 globalAD->syntax_err(_linenum, "%s: illegal USE of non-input: %s %s\n",
1009 _ident, opForm->_ident, name);
1010 }
1011 }
1012 _components.insert(name, opForm->_ident, e->_use_def, false);
1013 } else {
1014 Component *comp = (Component*)component;
1015 comp->promote_use_def_info(e->_use_def);
1016 }
1017 // Component positions are zero based.
1018 int pos = _components.operand_position(name);
1019 assert( ! (component->isa(Component::DEF) && (pos >= 1)),
1020 "Component::DEF can only occur in the first position");
1021 }
1022 }
1023
1024 // Resolving the interactions between expand rules and TEMPs would
1025 // be complex so simply disallow it.
1026 if (_matrule == nullptr && has_temp) {
1027 globalAD->syntax_err(_linenum, "%s: TEMPs without match rule isn't supported\n", _ident);
1028 }
1029
1030 return;
1031 }
1032
1033 // Return zero-based position in component list; -1 if not in list.
1034 int InstructForm::operand_position(const char *name, int usedef) {
1035 return unique_opnds_idx(_components.operand_position(name, usedef, this));
1036 }
1037
1038 int InstructForm::operand_position_format(const char *name) {
1039 return unique_opnds_idx(_components.operand_position_format(name, this));
1040 }
1041
1042 // Return zero-based position in component list; -1 if not in list.
1043 int InstructForm::label_position() {
1044 return unique_opnds_idx(_components.label_position());
1045 }
1046
1047 int InstructForm::method_position() {
1048 return unique_opnds_idx(_components.method_position());
1049 }
1050
1051 // Return number of relocation entries needed for this instruction.
1052 uint InstructForm::reloc(FormDict &globals) {
1053 uint reloc_entries = 0;
1054 // Check for "Call" nodes
1055 if ( is_ideal_call() ) ++reloc_entries;
1056 if ( is_ideal_return() ) ++reloc_entries;
1057 if ( is_ideal_safepoint() ) ++reloc_entries;
1058
1059
1060 // Check if operands MAYBE oop pointers, by checking for ConP elements
1061 // Proceed through the leaves of the match-tree and check for ConPs
1062 if ( _matrule != nullptr ) {
1063 uint position = 0;
1064 const char *result = nullptr;
1065 const char *name = nullptr;
1066 const char *opType = nullptr;
1067 while (_matrule->base_operand(position, globals, result, name, opType)) {
1068 if ( strcmp(opType,"ConP") == 0 ) {
1069 ++reloc_entries;
1070 }
1071 ++position;
1072 }
1073 }
1074
1075 // Above is only a conservative estimate
1076 // because it did not check contents of operand classes.
1077 // !!!!! !!!!!
1078 // Add 1 to reloc info for each operand class in the component list.
1079 Component *comp;
1080 _components.reset();
1081 while ( (comp = _components.iter()) != nullptr ) {
1082 const Form *form = globals[comp->_type];
1083 assert( form, "Did not find component's type in global names");
1084 const OpClassForm *opc = form->is_opclass();
1085 const OperandForm *oper = form->is_operand();
1086 if ( opc && (oper == nullptr) ) {
1087 ++reloc_entries;
1088 } else if ( oper ) {
1089 // floats and doubles loaded out of method's constant pool require reloc info
1090 Form::DataType type = oper->is_base_constant(globals);
1091 if ( (type == Form::idealH) || (type == Form::idealF) || (type == Form::idealD) ) {
1092 ++reloc_entries;
1093 }
1094 }
1095 }
1096
1097 // Float and Double constants may come from the CodeBuffer table
1098 // and require relocatable addresses for access
1099 // !!!!!
1100 // Check for any component being an immediate float or double.
1101 Form::DataType data_type = is_chain_of_constant(globals);
1102 if( data_type==idealH || data_type==idealD || data_type==idealF ) {
1103 reloc_entries++;
1104 }
1105
1106 return reloc_entries;
1107 }
1108
1109 // Utility function defined in archDesc.cpp
1110 extern bool is_def(int usedef);
1111
1112 // Return the result of reducing an instruction
1113 const char *InstructForm::reduce_result() {
1114 const char* result = "Universe"; // default
1115 _components.reset();
1116 Component *comp = _components.iter();
1117 if (comp != nullptr && comp->isa(Component::DEF)) {
1118 result = comp->_type;
1119 // Override this if the rule is a store operation:
1120 if (_matrule && _matrule->_rChild &&
1121 is_store_to_memory(_matrule->_rChild->_opType))
1122 result = "Universe";
1123 }
1124 return result;
1125 }
1126
1127 // Return the name of the operand on the right hand side of the binary match
1128 // Return null if there is no right hand side
1129 const char *InstructForm::reduce_right(FormDict &globals) const {
1130 if( _matrule == nullptr ) return nullptr;
1131 return _matrule->reduce_right(globals);
1132 }
1133
1134 // Similar for left
1135 const char *InstructForm::reduce_left(FormDict &globals) const {
1136 if( _matrule == nullptr ) return nullptr;
1137 return _matrule->reduce_left(globals);
1138 }
1139
1140
1141 // Base class for this instruction, MachNode except for calls
1142 const char *InstructForm::mach_base_class(FormDict &globals) const {
1143 if( is_ideal_call() == Form::JAVA_STATIC ) {
1144 return "MachCallStaticJavaNode";
1145 }
1146 else if( is_ideal_call() == Form::JAVA_DYNAMIC ) {
1147 return "MachCallDynamicJavaNode";
1148 }
1149 else if( is_ideal_call() == Form::JAVA_RUNTIME ) {
1150 return "MachCallRuntimeNode";
1151 }
1152 else if( is_ideal_call() == Form::JAVA_LEAF ) {
1153 return "MachCallLeafNode";
1154 }
1155 else if (is_ideal_return()) {
1156 return "MachReturnNode";
1157 }
1158 else if (is_ideal_halt()) {
1159 return "MachHaltNode";
1160 }
1161 else if (is_ideal_safepoint()) {
1162 return "MachSafePointNode";
1163 }
1164 else if (is_ideal_if()) {
1165 return "MachIfNode";
1166 }
1167 else if (is_ideal_goto()) {
1168 return "MachGotoNode";
1169 }
1170 else if (is_ideal_fastlock()) {
1171 return "MachFastLockNode";
1172 }
1173 else if (is_ideal_nop()) {
1174 return "MachNopNode";
1175 }
1176 else if( is_ideal_membar()) {
1177 return "MachMemBarNode";
1178 }
1179 else if (is_ideal_jump()) {
1180 return "MachJumpNode";
1181 }
1182 else if (is_mach_constant()) {
1183 return "MachConstantNode";
1184 }
1185 else if (captures_bottom_type(globals)) {
1186 return "MachTypeNode";
1187 } else {
1188 return "MachNode";
1189 }
1190 assert( false, "ShouldNotReachHere()");
1191 return nullptr;
1192 }
1193
1194 // Compare the instruction predicates for textual equality
1195 bool equivalent_predicates( const InstructForm *instr1, const InstructForm *instr2 ) {
1196 const Predicate *pred1 = instr1->_predicate;
1197 const Predicate *pred2 = instr2->_predicate;
1198 if( pred1 == nullptr && pred2 == nullptr ) {
1199 // no predicates means they are identical
1200 return true;
1201 }
1202 if( pred1 != nullptr && pred2 != nullptr ) {
1203 // compare the predicates
1204 if (ADLParser::equivalent_expressions(pred1->_pred, pred2->_pred)) {
1205 return true;
1206 }
1207 }
1208
1209 return false;
1210 }
1211
1212 // Check if this instruction can cisc-spill to 'alternate'
1213 bool InstructForm::cisc_spills_to(ArchDesc &AD, InstructForm *instr) {
1214 assert( _matrule != nullptr && instr->_matrule != nullptr, "must have match rules");
1215 // Do not replace if a cisc-version has been found.
1216 if( cisc_spill_operand() != Not_cisc_spillable ) return false;
1217
1218 int cisc_spill_operand = Maybe_cisc_spillable;
1219 char *result = nullptr;
1220 char *result2 = nullptr;
1221 const char *op_name = nullptr;
1222 const char *reg_type = nullptr;
1223 FormDict &globals = AD.globalNames();
1224 cisc_spill_operand = _matrule->matchrule_cisc_spill_match(globals, AD.get_registers(), instr->_matrule, op_name, reg_type);
1225 if( (cisc_spill_operand != Not_cisc_spillable) && (op_name != nullptr) && equivalent_predicates(this, instr) ) {
1226 cisc_spill_operand = operand_position(op_name, Component::USE);
1227 int def_oper = operand_position(op_name, Component::DEF);
1228 if( def_oper == NameList::Not_in_list && instr->num_opnds() == num_opnds()) {
1229 // Do not support cisc-spilling for destination operands and
1230 // make sure they have the same number of operands.
1231 _cisc_spill_alternate = instr;
1232 instr->set_cisc_alternate(true);
1233 if( AD._cisc_spill_debug ) {
1234 fprintf(stderr, "Instruction %s cisc-spills-to %s\n", _ident, instr->_ident);
1235 fprintf(stderr, " using operand %s %s at index %d\n", reg_type, op_name, cisc_spill_operand);
1236 }
1237 // Record that a stack-version of the reg_mask is needed
1238 // !!!!!
1239 OperandForm *oper = (OperandForm*)(globals[reg_type]->is_operand());
1240 assert( oper != nullptr, "cisc-spilling non operand");
1241 const char *reg_class_name = oper->constrained_reg_class();
1242 AD.set_stack_or_reg(reg_class_name);
1243 const char *reg_mask_name = AD.reg_mask(*oper);
1244 set_cisc_reg_mask_name(reg_mask_name);
1245 const char *stack_or_reg_mask_name = AD.stack_or_reg_mask(*oper);
1246 } else {
1247 cisc_spill_operand = Not_cisc_spillable;
1248 }
1249 } else {
1250 cisc_spill_operand = Not_cisc_spillable;
1251 }
1252
1253 set_cisc_spill_operand(cisc_spill_operand);
1254 return (cisc_spill_operand != Not_cisc_spillable);
1255 }
1256
1257 // Check to see if this instruction can be replaced with the short branch
1258 // instruction `short-branch'
1259 bool InstructForm::check_branch_variant(ArchDesc &AD, InstructForm *short_branch) {
1260 if (_matrule != nullptr &&
1261 this != short_branch && // Don't match myself
1262 !is_short_branch() && // Don't match another short branch variant
1263 reduce_result() != nullptr &&
1264 strstr(_ident, "restoreMask") == nullptr && // Don't match side effects
1265 strcmp(reduce_result(), short_branch->reduce_result()) == 0 &&
1266 _matrule->equivalent(AD.globalNames(), short_branch->_matrule)) {
1267 // The instructions are equivalent.
1268
1269 // Now verify that both instructions have the same parameters and
1270 // the same effects. Both branch forms should have the same inputs
1271 // and resulting projections to correctly replace a long branch node
1272 // with corresponding short branch node during code generation.
1273
1274 bool different = false;
1275 if (short_branch->_components.count() != _components.count()) {
1276 different = true;
1277 } else if (_components.count() > 0) {
1278 short_branch->_components.reset();
1279 _components.reset();
1280 Component *comp;
1281 while ((comp = _components.iter()) != nullptr) {
1282 Component *short_comp = short_branch->_components.iter();
1283 if (short_comp == nullptr ||
1284 short_comp->_type != comp->_type ||
1285 short_comp->_usedef != comp->_usedef) {
1286 different = true;
1287 break;
1288 }
1289 }
1290 if (short_branch->_components.iter() != nullptr)
1291 different = true;
1292 }
1293 if (different) {
1294 globalAD->syntax_err(short_branch->_linenum, "Instruction %s and its short form %s have different parameters\n", _ident, short_branch->_ident);
1295 }
1296 if (AD._adl_debug > 1 || AD._short_branch_debug) {
1297 fprintf(stderr, "Instruction %s has short form %s\n", _ident, short_branch->_ident);
1298 }
1299 _short_branch_form = short_branch;
1300 return true;
1301 }
1302 return false;
1303 }
1304
1305
1306 // --------------------------- FILE *output_routines
1307 //
1308 // Generate the format call for the replacement variable
1309 void InstructForm::rep_var_format(FILE *fp, const char *rep_var) {
1310 // Handle special constant table variables.
1311 if (strcmp(rep_var, "constanttablebase") == 0) {
1312 fprintf(fp, "char reg[128]; ra->dump_register(in(mach_constant_base_node_input()), reg, sizeof(reg));\n");
1313 fprintf(fp, " st->print(\"%%s\", reg);\n");
1314 return;
1315 }
1316 if (strcmp(rep_var, "constantoffset") == 0) {
1317 fprintf(fp, "st->print(\"#%%d\", constant_offset_unchecked());\n");
1318 return;
1319 }
1320 if (strcmp(rep_var, "constantaddress") == 0) {
1321 fprintf(fp, "st->print(\"constant table base + #%%d\", constant_offset_unchecked());\n");
1322 return;
1323 }
1324
1325 // Find replacement variable's type
1326 const Form *form = _localNames[rep_var];
1327 if (form == nullptr) {
1328 globalAD->syntax_err(_linenum, "Unknown replacement variable %s in format statement of %s.",
1329 rep_var, _ident);
1330 return;
1331 }
1332 OpClassForm *opc = form->is_opclass();
1333 assert( opc, "replacement variable was not found in local names");
1334 // Lookup the index position of the replacement variable
1335 int idx = operand_position_format(rep_var);
1336 if ( idx == -1 ) {
1337 globalAD->syntax_err(_linenum, "Could not find replacement variable %s in format statement of %s.\n",
1338 rep_var, _ident);
1339 assert(strcmp(opc->_ident, "label") == 0, "Unimplemented");
1340 return;
1341 }
1342
1343 if (is_noninput_operand(idx)) {
1344 // This component isn't in the input array. Print out the static
1345 // name of the register.
1346 OperandForm* oper = form->is_operand();
1347 if (oper != nullptr && oper->is_bound_register()) {
1348 const RegDef* first = oper->get_RegClass()->find_first_elem();
1349 fprintf(fp, " st->print_raw(\"%s\");\n", first->_regname);
1350 } else {
1351 globalAD->syntax_err(_linenum, "In %s can't find format for %s %s", _ident, opc->_ident, rep_var);
1352 }
1353 } else {
1354 // Output the format call for this operand
1355 fprintf(fp,"opnd_array(%d)->",idx);
1356 if (idx == 0)
1357 fprintf(fp,"int_format(ra, this, st); // %s\n", rep_var);
1358 else
1359 fprintf(fp,"ext_format(ra, this,idx%d, st); // %s\n", idx, rep_var );
1360 }
1361 }
1362
1363 // Search through operands to determine parameters unique positions.
1364 void InstructForm::set_unique_opnds() {
1365 uint* uniq_idx = nullptr;
1366 uint nopnds = num_opnds();
1367 uint num_uniq = nopnds;
1368 uint i;
1369 _uniq_idx_length = 0;
1370 if (nopnds > 0) {
1371 // Allocate index array. Worst case we're mapping from each
1372 // component back to an index and any DEF always goes at 0 so the
1373 // length of the array has to be the number of components + 1.
1374 _uniq_idx_length = _components.count() + 1;
1375 uniq_idx = (uint*) AdlAllocateHeap(sizeof(uint) * _uniq_idx_length);
1376 for (i = 0; i < _uniq_idx_length; i++) {
1377 uniq_idx[i] = i;
1378 }
1379 }
1380 // Do it only if there is a match rule and no expand rule. With an
1381 // expand rule it is done by creating new mach node in Expand()
1382 // method.
1383 if (nopnds > 0 && _matrule != nullptr && _exprule == nullptr) {
1384 const char *name;
1385 uint count;
1386 bool has_dupl_use = false;
1387
1388 _parameters.reset();
1389 while ((name = _parameters.iter()) != nullptr) {
1390 count = 0;
1391 uint position = 0;
1392 uint uniq_position = 0;
1393 _components.reset();
1394 Component *comp = nullptr;
1395 if (sets_result()) {
1396 comp = _components.iter();
1397 position++;
1398 }
1399 // The next code is copied from the method operand_position().
1400 for (; (comp = _components.iter()) != nullptr; ++position) {
1401 // When the first component is not a DEF,
1402 // leave space for the result operand!
1403 if (position==0 && (!comp->isa(Component::DEF))) {
1404 ++position;
1405 }
1406 if (strcmp(name, comp->_name) == 0) {
1407 if (++count > 1) {
1408 assert(position < _uniq_idx_length, "out of bounds");
1409 uniq_idx[position] = uniq_position;
1410 has_dupl_use = true;
1411 } else {
1412 uniq_position = position;
1413 }
1414 }
1415 if (comp->isa(Component::DEF) && comp->isa(Component::USE)) {
1416 ++position;
1417 if (position != 1)
1418 --position; // only use two slots for the 1st USE_DEF
1419 }
1420 }
1421 }
1422 if (has_dupl_use) {
1423 for (i = 1; i < nopnds; i++) {
1424 if (i != uniq_idx[i]) {
1425 break;
1426 }
1427 }
1428 uint j = i;
1429 for (; i < nopnds; i++) {
1430 if (i == uniq_idx[i]) {
1431 uniq_idx[i] = j++;
1432 }
1433 }
1434 num_uniq = j;
1435 }
1436 }
1437 _uniq_idx = uniq_idx;
1438 _num_uniq = num_uniq;
1439 }
1440
1441 // Generate index values needed for determining the operand position
1442 void InstructForm::index_temps(FILE *fp, FormDict &globals, const char *prefix, const char *receiver) {
1443 uint idx = 0; // position of operand in match rule
1444 int cur_num_opnds = num_opnds();
1445
1446 // Compute the index into vector of operand pointers:
1447 // idx0=0 is used to indicate that info comes from this same node, not from input edge.
1448 // idx1 starts at oper_input_base()
1449 if ( cur_num_opnds >= 1 ) {
1450 fprintf(fp," // Start at oper_input_base() and count operands\n");
1451 fprintf(fp," unsigned %sidx0 = %d;\n", prefix, oper_input_base(globals));
1452 fprintf(fp," unsigned %sidx1 = %d;", prefix, oper_input_base(globals));
1453 fprintf(fp," \t// %s\n", unique_opnd_ident(1));
1454
1455 // Generate starting points for other unique operands if they exist
1456 for ( idx = 2; idx < num_unique_opnds(); ++idx ) {
1457 if( *receiver == 0 ) {
1458 fprintf(fp," unsigned %sidx%d = %sidx%d + opnd_array(%d)->num_edges();",
1459 prefix, idx, prefix, idx-1, idx-1 );
1460 } else {
1461 fprintf(fp," unsigned %sidx%d = %sidx%d + %s_opnds[%d]->num_edges();",
1462 prefix, idx, prefix, idx-1, receiver, idx-1 );
1463 }
1464 fprintf(fp," \t// %s\n", unique_opnd_ident(idx));
1465 }
1466 }
1467 if( *receiver != 0 ) {
1468 // This value is used by generate_peepreplace when copying a node.
1469 // Don't emit it in other cases since it can hide bugs with the
1470 // use invalid idx's.
1471 fprintf(fp," unsigned %sidx%d = %sreq(); \n", prefix, idx, receiver);
1472 }
1473
1474 }
1475
1476 // ---------------------------
1477 bool InstructForm::verify() {
1478 // !!!!! !!!!!
1479 // Check that a "label" operand occurs last in the operand list, if present
1480 return true;
1481 }
1482
1483 void InstructForm::dump() {
1484 output(stderr);
1485 }
1486
1487 void InstructForm::output(FILE *fp) {
1488 fprintf(fp,"\nInstruction: %s\n", (_ident?_ident:""));
1489 if (_matrule) _matrule->output(fp);
1490 if (_insencode) _insencode->output(fp);
1491 if (_constant) _constant->output(fp);
1492 if (_opcode) _opcode->output(fp);
1493 if (_attribs) _attribs->output(fp);
1494 if (_predicate) _predicate->output(fp);
1495 if (_effects.Size()) {
1496 fprintf(fp,"Effects\n");
1497 _effects.dump();
1498 }
1499 if (_exprule) _exprule->output(fp);
1500 if (_rewrule) _rewrule->output(fp);
1501 if (_format) _format->output(fp);
1502 if (_peephole) _peephole->output(fp);
1503 }
1504
1505 void InstructForm::forms_do(FormClosure *f) {
1506 if (_cisc_spill_alternate) f->do_form(_cisc_spill_alternate);
1507 if (_short_branch_form) f->do_form(_short_branch_form);
1508 _localNames.forms_do(f);
1509 if (_matrule) f->do_form(_matrule);
1510 if (_opcode) f->do_form(_opcode);
1511 if (_insencode) f->do_form(_insencode);
1512 if (_constant) f->do_form(_constant);
1513 if (_attribs) f->do_form(_attribs);
1514 if (_predicate) f->do_form(_predicate);
1515 _effects.forms_do(f);
1516 if (_exprule) f->do_form(_exprule);
1517 if (_rewrule) f->do_form(_rewrule);
1518 if (_format) f->do_form(_format);
1519 if (_peephole) f->do_form(_peephole);
1520 assert(_components.count() == 0, "skip components");
1521 }
1522
1523 void MachNodeForm::dump() {
1524 output(stderr);
1525 }
1526
1527 void MachNodeForm::output(FILE *fp) {
1528 fprintf(fp,"\nMachNode: %s\n", (_ident?_ident:""));
1529 }
1530
1531 //------------------------------build_predicate--------------------------------
1532 // Build instruction predicates. If the user uses the same operand name
1533 // twice, we need to check that the operands are pointer-eequivalent in
1534 // the DFA during the labeling process.
1535 Predicate *InstructForm::build_predicate() {
1536 const int buflen = 1024;
1537 char buf[buflen], *s=buf;
1538 Dict names(cmpstr,hashstr,Form::arena); // Map Names to counts
1539
1540 MatchNode *mnode =
1541 strcmp(_matrule->_opType, "Set") ? _matrule : _matrule->_rChild;
1542 if (mnode != nullptr) mnode->count_instr_names(names);
1543
1544 uint first = 1;
1545 // Start with the predicate supplied in the .ad file.
1546 if (_predicate) {
1547 if (first) first = 0;
1548 strcpy(s, "("); s += strlen(s);
1549 strncpy(s, _predicate->_pred, buflen - strlen(s) - 1);
1550 s += strlen(s);
1551 strcpy(s, ")"); s += strlen(s);
1552 }
1553 for( DictI i(&names); i.test(); ++i ) {
1554 uintptr_t cnt = (uintptr_t)i._value;
1555 if( cnt > 1 ) { // Need a predicate at all?
1556 int path_bitmask = 0;
1557 assert( cnt == 2, "Unimplemented" );
1558 // Handle many pairs
1559 if( first ) first=0;
1560 else { // All tests must pass, so use '&&'
1561 strcpy(s," && ");
1562 s += strlen(s);
1563 }
1564 // Add predicate to working buffer
1565 snprintf_checked(s, remaining_buflen(buf, s), "/*%s*/(",(char*)i._key);
1566 s += strlen(s);
1567 mnode->build_instr_pred(s,(char*)i._key, 0, path_bitmask, 0);
1568 s += strlen(s);
1569 strcpy(s," == "); s += strlen(s);
1570 mnode->build_instr_pred(s,(char*)i._key, 1, path_bitmask, 0);
1571 s += strlen(s);
1572 strcpy(s,")"); s += strlen(s);
1573 }
1574 }
1575 if( s == buf ) s = nullptr;
1576 else {
1577 assert( strlen(buf) < sizeof(buf), "String buffer overflow" );
1578 s = strdup(buf);
1579 }
1580 return new Predicate(s);
1581 }
1582
1583 //------------------------------EncodeForm-------------------------------------
1584 // Constructor
1585 EncodeForm::EncodeForm()
1586 : _encClass(cmpstr,hashstr, Form::arena) {
1587 }
1588 EncodeForm::~EncodeForm() {
1589 }
1590
1591 // record a new register class
1592 EncClass *EncodeForm::add_EncClass(const char *className) {
1593 EncClass *encClass = new EncClass(className);
1594 _eclasses.addName(className);
1595 _encClass.Insert(className,encClass);
1596 return encClass;
1597 }
1598
1599 // Lookup the function body for an encoding class
1600 EncClass *EncodeForm::encClass(const char *className) {
1601 assert( className != nullptr, "Must provide a defined encoding name");
1602
1603 EncClass *encClass = (EncClass*)_encClass[className];
1604 return encClass;
1605 }
1606
1607 // Lookup the function body for an encoding class
1608 const char *EncodeForm::encClassBody(const char *className) {
1609 if( className == nullptr ) return nullptr;
1610
1611 EncClass *encClass = (EncClass*)_encClass[className];
1612 assert( encClass != nullptr, "Encode Class is missing.");
1613 encClass->_code.reset();
1614 const char *code = (const char*)encClass->_code.iter();
1615 assert( code != nullptr, "Found an empty encode class body.");
1616
1617 return code;
1618 }
1619
1620 // Lookup the function body for an encoding class
1621 const char *EncodeForm::encClassPrototype(const char *className) {
1622 assert( className != nullptr, "Encode class name must be non null.");
1623
1624 return className;
1625 }
1626
1627 void EncodeForm::dump() { // Debug printer
1628 output(stderr);
1629 }
1630
1631 void EncodeForm::output(FILE *fp) { // Write info to output files
1632 const char *name;
1633 fprintf(fp,"\n");
1634 fprintf(fp,"-------------------- Dump EncodeForm --------------------\n");
1635 for (_eclasses.reset(); (name = _eclasses.iter()) != nullptr;) {
1636 ((EncClass*)_encClass[name])->output(fp);
1637 }
1638 fprintf(fp,"-------------------- end EncodeForm --------------------\n");
1639 }
1640
1641 void EncodeForm::forms_do(FormClosure* f) {
1642 const char *name;
1643 for (_eclasses.reset(); (name = _eclasses.iter()) != nullptr;) {
1644 f->do_form((EncClass*)_encClass[name]);
1645 }
1646 }
1647
1648 //------------------------------EncClass---------------------------------------
1649 EncClass::EncClass(const char *name)
1650 : _localNames(cmpstr,hashstr, Form::arena), _name(name) {
1651 }
1652 EncClass::~EncClass() {
1653 }
1654
1655 // Add a parameter <type,name> pair
1656 void EncClass::add_parameter(const char *parameter_type, const char *parameter_name) {
1657 _parameter_type.addName( parameter_type );
1658 _parameter_name.addName( parameter_name );
1659 }
1660
1661 // Verify operand types in parameter list
1662 bool EncClass::check_parameter_types(FormDict &globals) {
1663 // !!!!!
1664 return false;
1665 }
1666
1667 // Add the decomposed "code" sections of an encoding's code-block
1668 void EncClass::add_code(const char *code) {
1669 _code.addName(code);
1670 }
1671
1672 // Add the decomposed "replacement variables" of an encoding's code-block
1673 void EncClass::add_rep_var(char *replacement_var) {
1674 _code.addName(NameList::_signal);
1675 _rep_vars.addName(replacement_var);
1676 }
1677
1678 // Lookup the function body for an encoding class
1679 int EncClass::rep_var_index(const char *rep_var) {
1680 uint position = 0;
1681 const char *name = nullptr;
1682
1683 _parameter_name.reset();
1684 while ( (name = _parameter_name.iter()) != nullptr ) {
1685 if ( strcmp(rep_var,name) == 0 ) return position;
1686 ++position;
1687 }
1688
1689 return -1;
1690 }
1691
1692 // Check after parsing
1693 bool EncClass::verify() {
1694 // 1!!!!
1695 // Check that each replacement variable, '$name' in architecture description
1696 // is actually a local variable for this encode class, or a reserved name
1697 // "primary, secondary, tertiary"
1698 return true;
1699 }
1700
1701 void EncClass::dump() {
1702 output(stderr);
1703 }
1704
1705 // Write info to output files
1706 void EncClass::output(FILE *fp) {
1707 fprintf(fp,"EncClass: %s", (_name ? _name : ""));
1708
1709 // Output the parameter list
1710 _parameter_type.reset();
1711 _parameter_name.reset();
1712 const char *type = _parameter_type.iter();
1713 const char *name = _parameter_name.iter();
1714 fprintf(fp, " ( ");
1715 for ( ; (type != nullptr) && (name != nullptr);
1716 (type = _parameter_type.iter()), (name = _parameter_name.iter()) ) {
1717 fprintf(fp, " %s %s,", type, name);
1718 }
1719 fprintf(fp, " ) ");
1720
1721 // Output the code block
1722 _code.reset();
1723 _rep_vars.reset();
1724 const char *code;
1725 while ( (code = _code.iter()) != nullptr ) {
1726 if ( _code.is_signal(code) ) {
1727 // A replacement variable
1728 const char *rep_var = _rep_vars.iter();
1729 fprintf(fp,"($%s)", rep_var);
1730 } else {
1731 // A section of code
1732 fprintf(fp,"%s", code);
1733 }
1734 }
1735
1736 }
1737
1738 void EncClass::forms_do(FormClosure *f) {
1739 _parameter_type.reset();
1740 const char *type = _parameter_type.iter();
1741 for ( ; type != nullptr ; type = _parameter_type.iter() ) {
1742 f->do_form_by_name(type);
1743 }
1744 _localNames.forms_do(f);
1745 }
1746
1747 //------------------------------Opcode-----------------------------------------
1748 Opcode::Opcode(char *primary, char *secondary, char *tertiary)
1749 : _primary(primary), _secondary(secondary), _tertiary(tertiary) {
1750 }
1751
1752 Opcode::~Opcode() {
1753 }
1754
1755 Opcode::opcode_type Opcode::as_opcode_type(const char *param) {
1756 if( strcmp(param,"primary") == 0 ) {
1757 return Opcode::PRIMARY;
1758 }
1759 else if( strcmp(param,"secondary") == 0 ) {
1760 return Opcode::SECONDARY;
1761 }
1762 else if( strcmp(param,"tertiary") == 0 ) {
1763 return Opcode::TERTIARY;
1764 }
1765 return Opcode::NOT_AN_OPCODE;
1766 }
1767
1768 bool Opcode::print_opcode(FILE *fp, Opcode::opcode_type desired_opcode) {
1769 // Default values previously provided by MachNode::primary()...
1770 const char *description = nullptr;
1771 const char *value = nullptr;
1772 // Check if user provided any opcode definitions
1773 // Update 'value' if user provided a definition in the instruction
1774 switch (desired_opcode) {
1775 case PRIMARY:
1776 description = "primary()";
1777 if( _primary != nullptr) { value = _primary; }
1778 break;
1779 case SECONDARY:
1780 description = "secondary()";
1781 if( _secondary != nullptr ) { value = _secondary; }
1782 break;
1783 case TERTIARY:
1784 description = "tertiary()";
1785 if( _tertiary != nullptr ) { value = _tertiary; }
1786 break;
1787 default:
1788 assert( false, "ShouldNotReachHere();");
1789 break;
1790 }
1791
1792 if (value != nullptr) {
1793 fprintf(fp, "(%s /*%s*/)", value, description);
1794 }
1795 return value != nullptr;
1796 }
1797
1798 void Opcode::dump() {
1799 output(stderr);
1800 }
1801
1802 // Write info to output files
1803 void Opcode::output(FILE *fp) {
1804 if (_primary != nullptr) fprintf(fp,"Primary opcode: %s\n", _primary);
1805 if (_secondary != nullptr) fprintf(fp,"Secondary opcode: %s\n", _secondary);
1806 if (_tertiary != nullptr) fprintf(fp,"Tertiary opcode: %s\n", _tertiary);
1807 }
1808
1809 //------------------------------InsEncode--------------------------------------
1810 InsEncode::InsEncode() {
1811 }
1812 InsEncode::~InsEncode() {
1813 }
1814
1815 // Add "encode class name" and its parameters
1816 NameAndList *InsEncode::add_encode(char *encoding) {
1817 assert( encoding != nullptr, "Must provide name for encoding");
1818
1819 // add_parameter(NameList::_signal);
1820 NameAndList *encode = new NameAndList(encoding);
1821 _encoding.addName((char*)encode);
1822
1823 return encode;
1824 }
1825
1826 // Access the list of encodings
1827 void InsEncode::reset() {
1828 _encoding.reset();
1829 // _parameter.reset();
1830 }
1831 const char* InsEncode::encode_class_iter() {
1832 NameAndList *encode_class = (NameAndList*)_encoding.iter();
1833 return ( encode_class != nullptr ? encode_class->name() : nullptr );
1834 }
1835 // Obtain parameter name from zero based index
1836 const char *InsEncode::rep_var_name(InstructForm &inst, uint param_no) {
1837 NameAndList *params = (NameAndList*)_encoding.current();
1838 assert( params != nullptr, "Internal Error");
1839 const char *param = (*params)[param_no];
1840
1841 // Remove '$' if parser placed it there.
1842 return ( param != nullptr && *param == '$') ? (param+1) : param;
1843 }
1844
1845 void InsEncode::dump() {
1846 output(stderr);
1847 }
1848
1849 // Write info to output files
1850 void InsEncode::output(FILE *fp) {
1851 NameAndList *encoding = nullptr;
1852 const char *parameter = nullptr;
1853
1854 fprintf(fp,"InsEncode: ");
1855 _encoding.reset();
1856
1857 while ( (encoding = (NameAndList*)_encoding.iter()) != nullptr ) {
1858 // Output the encoding being used
1859 fprintf(fp,"%s(", encoding->name() );
1860
1861 // Output its parameter list, if any
1862 bool first_param = true;
1863 encoding->reset();
1864 while ( (parameter = encoding->iter()) != nullptr ) {
1865 // Output the ',' between parameters
1866 if ( ! first_param ) fprintf(fp,", ");
1867 first_param = false;
1868 // Output the parameter
1869 fprintf(fp,"%s", parameter);
1870 } // done with parameters
1871 fprintf(fp,") ");
1872 } // done with encodings
1873
1874 fprintf(fp,"\n");
1875 }
1876
1877 void InsEncode::forms_do(FormClosure *f) {
1878 _encoding.reset();
1879 NameAndList *encoding = (NameAndList*)_encoding.iter();
1880 for( ; encoding != nullptr; encoding = (NameAndList*)_encoding.iter() ) {
1881 // just check name, other operands will be checked as instruction parameters
1882 f->do_form_by_name(encoding->name());
1883 }
1884 }
1885
1886 //------------------------------Effect-----------------------------------------
1887 static int effect_lookup(const char *name) {
1888 if (!strcmp(name, "USE")) return Component::USE;
1889 if (!strcmp(name, "DEF")) return Component::DEF;
1890 if (!strcmp(name, "USE_DEF")) return Component::USE_DEF;
1891 if (!strcmp(name, "KILL")) return Component::KILL;
1892 if (!strcmp(name, "USE_KILL")) return Component::USE_KILL;
1893 if (!strcmp(name, "TEMP")) return Component::TEMP;
1894 if (!strcmp(name, "TEMP_DEF")) return Component::TEMP_DEF;
1895 if (!strcmp(name, "INVALID")) return Component::INVALID;
1896 if (!strcmp(name, "CALL")) return Component::CALL;
1897 assert(false,"Invalid effect name specified\n");
1898 return Component::INVALID;
1899 }
1900
1901 const char *Component::getUsedefName() {
1902 switch (_usedef) {
1903 case Component::INVALID: return "INVALID"; break;
1904 case Component::USE: return "USE"; break;
1905 case Component::USE_DEF: return "USE_DEF"; break;
1906 case Component::USE_KILL: return "USE_KILL"; break;
1907 case Component::KILL: return "KILL"; break;
1908 case Component::TEMP: return "TEMP"; break;
1909 case Component::TEMP_DEF: return "TEMP_DEF"; break;
1910 case Component::DEF: return "DEF"; break;
1911 case Component::CALL: return "CALL"; break;
1912 default: assert(false, "unknown effect");
1913 }
1914 return "Undefined Use/Def info";
1915 }
1916
1917 Effect::Effect(const char *name) : _name(name), _use_def(effect_lookup(name)) {
1918 _ftype = Form::EFF;
1919 }
1920
1921 Effect::~Effect() {
1922 }
1923
1924 // Dynamic type check
1925 Effect *Effect::is_effect() const {
1926 return (Effect*)this;
1927 }
1928
1929
1930 // True if this component is equal to the parameter.
1931 bool Effect::is(int use_def_kill_enum) const {
1932 return (_use_def == use_def_kill_enum ? true : false);
1933 }
1934 // True if this component is used/def'd/kill'd as the parameter suggests.
1935 bool Effect::isa(int use_def_kill_enum) const {
1936 return (_use_def & use_def_kill_enum) == use_def_kill_enum;
1937 }
1938
1939 void Effect::dump() {
1940 output(stderr);
1941 }
1942
1943 void Effect::output(FILE *fp) { // Write info to output files
1944 fprintf(fp,"Effect: %s\n", (_name?_name:""));
1945 }
1946
1947 //---------------------------------Flag----------------------------------------
1948 Flag::Flag(const char *name) : _name(name), _next(nullptr) {
1949 _ftype = Form::FLG;
1950 }
1951
1952 Flag::~Flag() {
1953 }
1954
1955 void Flag::append_flag(Flag *next_flag) {
1956 if( _next == nullptr ) {
1957 _next = next_flag;
1958 } else {
1959 _next->append_flag( next_flag );
1960 }
1961 }
1962
1963 Flag* Flag::next() {
1964 return _next;
1965 }
1966
1967 void Flag::dump() {
1968 output(stderr);
1969 }
1970
1971 void Flag::output(FILE *fp) { // Write info to output files
1972 fprintf(fp,"Flag: %s\n", (_name?_name:""));
1973 }
1974
1975 //------------------------------ExpandRule-------------------------------------
1976 ExpandRule::ExpandRule() : _expand_instrs(),
1977 _newopconst(cmpstr, hashstr, Form::arena) {
1978 _ftype = Form::EXP;
1979 }
1980
1981 ExpandRule::~ExpandRule() { // Destructor
1982 }
1983
1984 void ExpandRule::add_instruction(NameAndList *instruction_name_and_operand_list) {
1985 _expand_instrs.addName((char*)instruction_name_and_operand_list);
1986 }
1987
1988 void ExpandRule::reset_instructions() {
1989 _expand_instrs.reset();
1990 }
1991
1992 NameAndList* ExpandRule::iter_instructions() {
1993 return (NameAndList*)_expand_instrs.iter();
1994 }
1995
1996
1997 void ExpandRule::dump() {
1998 output(stderr);
1999 }
2000
2001 void ExpandRule::output(FILE *fp) { // Write info to output files
2002 NameAndList *expand_instr = nullptr;
2003 const char *opid = nullptr;
2004
2005 fprintf(fp,"\nExpand Rule:\n");
2006
2007 // Iterate over the instructions 'node' expands into
2008 for(reset_instructions(); (expand_instr = iter_instructions()) != nullptr; ) {
2009 fprintf(fp,"%s(", expand_instr->name());
2010
2011 // iterate over the operand list
2012 for( expand_instr->reset(); (opid = expand_instr->iter()) != nullptr; ) {
2013 fprintf(fp,"%s ", opid);
2014 }
2015 fprintf(fp,");\n");
2016 }
2017 }
2018
2019 void ExpandRule::forms_do(FormClosure *f) {
2020 NameAndList *expand_instr = nullptr;
2021 // Iterate over the instructions 'node' expands into
2022 for(reset_instructions(); (expand_instr = iter_instructions()) != nullptr; ) {
2023 f->do_form_by_name(expand_instr->name());
2024 }
2025 _newopers.reset();
2026 const char* oper = _newopers.iter();
2027 for(; oper != nullptr; oper = _newopers.iter()) {
2028 f->do_form_by_name(oper);
2029 }
2030 }
2031
2032 //------------------------------RewriteRule------------------------------------
2033 RewriteRule::RewriteRule(char* params, char* block)
2034 : _tempParams(params), _tempBlock(block) { }; // Constructor
2035 RewriteRule::~RewriteRule() { // Destructor
2036 }
2037
2038 void RewriteRule::dump() {
2039 output(stderr);
2040 }
2041
2042 void RewriteRule::output(FILE *fp) { // Write info to output files
2043 fprintf(fp,"\nRewrite Rule:\n%s\n%s\n",
2044 (_tempParams?_tempParams:""),
2045 (_tempBlock?_tempBlock:""));
2046 }
2047
2048 void RewriteRule::forms_do(FormClosure *f) {
2049 if (_condition) f->do_form(_condition);
2050 if (_instrs) f->do_form(_instrs);
2051 if (_opers) f->do_form(_opers);
2052 }
2053
2054
2055 //==============================MachNodes======================================
2056 //------------------------------MachNodeForm-----------------------------------
2057 MachNodeForm::MachNodeForm(char *id)
2058 : _ident(id) {
2059 }
2060
2061 MachNodeForm::~MachNodeForm() {
2062 }
2063
2064 MachNodeForm *MachNodeForm::is_machnode() const {
2065 return (MachNodeForm*)this;
2066 }
2067
2068 //==============================Operand Classes================================
2069 //------------------------------OpClassForm------------------------------------
2070 OpClassForm::OpClassForm(const char* id) : _ident(id) {
2071 _ftype = Form::OPCLASS;
2072 }
2073
2074 OpClassForm::~OpClassForm() {
2075 }
2076
2077 bool OpClassForm::ideal_only() const { return 0; }
2078
2079 OpClassForm *OpClassForm::is_opclass() const {
2080 return (OpClassForm*)this;
2081 }
2082
2083 Form::InterfaceType OpClassForm::interface_type(FormDict &globals) const {
2084 if( _oplst.count() == 0 ) return Form::no_interface;
2085
2086 // Check that my operands have the same interface type
2087 Form::InterfaceType interface;
2088 bool first = true;
2089 NameList &op_list = (NameList &)_oplst;
2090 op_list.reset();
2091 const char *op_name;
2092 while( (op_name = op_list.iter()) != nullptr ) {
2093 const Form *form = globals[op_name];
2094 OperandForm *operand = form->is_operand();
2095 assert( operand, "Entry in operand class that is not an operand");
2096 if( first ) {
2097 first = false;
2098 interface = operand->interface_type(globals);
2099 } else {
2100 interface = (interface == operand->interface_type(globals) ? interface : Form::no_interface);
2101 }
2102 }
2103 return interface;
2104 }
2105
2106 bool OpClassForm::stack_slots_only(FormDict &globals) const {
2107 if( _oplst.count() == 0 ) return false; // how?
2108
2109 NameList &op_list = (NameList &)_oplst;
2110 op_list.reset();
2111 const char *op_name;
2112 while( (op_name = op_list.iter()) != nullptr ) {
2113 const Form *form = globals[op_name];
2114 OperandForm *operand = form->is_operand();
2115 assert( operand, "Entry in operand class that is not an operand");
2116 if( !operand->stack_slots_only(globals) ) return false;
2117 }
2118 return true;
2119 }
2120
2121
2122 void OpClassForm::dump() {
2123 output(stderr);
2124 }
2125
2126 void OpClassForm::output(FILE *fp) {
2127 const char *name;
2128 fprintf(fp,"\nOperand Class: %s\n", (_ident?_ident:""));
2129 fprintf(fp,"\nCount = %d\n", _oplst.count());
2130 for(_oplst.reset(); (name = _oplst.iter()) != nullptr;) {
2131 fprintf(fp,"%s, ",name);
2132 }
2133 fprintf(fp,"\n");
2134 }
2135
2136 void OpClassForm::forms_do(FormClosure* f) {
2137 const char *name;
2138 for(_oplst.reset(); (name = _oplst.iter()) != nullptr;) {
2139 f->do_form_by_name(name);
2140 }
2141 }
2142
2143
2144 //==============================Operands=======================================
2145 //------------------------------OperandForm------------------------------------
2146 OperandForm::OperandForm(const char* id)
2147 : OpClassForm(id), _ideal_only(false),
2148 _localNames(cmpstr, hashstr, Form::arena) {
2149 _ftype = Form::OPER;
2150
2151 _matrule = nullptr;
2152 _interface = nullptr;
2153 _attribs = nullptr;
2154 _predicate = nullptr;
2155 _constraint= nullptr;
2156 _construct = nullptr;
2157 _format = nullptr;
2158 }
2159 OperandForm::OperandForm(const char* id, bool ideal_only)
2160 : OpClassForm(id), _ideal_only(ideal_only),
2161 _localNames(cmpstr, hashstr, Form::arena) {
2162 _ftype = Form::OPER;
2163
2164 _matrule = nullptr;
2165 _interface = nullptr;
2166 _attribs = nullptr;
2167 _predicate = nullptr;
2168 _constraint= nullptr;
2169 _construct = nullptr;
2170 _format = nullptr;
2171 }
2172 OperandForm::~OperandForm() {
2173 }
2174
2175
2176 OperandForm *OperandForm::is_operand() const {
2177 return (OperandForm*)this;
2178 }
2179
2180 bool OperandForm::ideal_only() const {
2181 return _ideal_only;
2182 }
2183
2184 Form::InterfaceType OperandForm::interface_type(FormDict &globals) const {
2185 if( _interface == nullptr ) return Form::no_interface;
2186
2187 return _interface->interface_type(globals);
2188 }
2189
2190
2191 bool OperandForm::stack_slots_only(FormDict &globals) const {
2192 if( _constraint == nullptr ) return false;
2193 return _constraint->stack_slots_only();
2194 }
2195
2196
2197 // Access op_cost attribute or return null.
2198 const char* OperandForm::cost() {
2199 for (Attribute* cur = _attribs; cur != nullptr; cur = (Attribute*)cur->_next) {
2200 if( strcmp(cur->_ident,AttributeForm::_op_cost) == 0 ) {
2201 return cur->_val;
2202 }
2203 }
2204 return nullptr;
2205 }
2206
2207 // Return the number of leaves below this complex operand
2208 uint OperandForm::num_leaves() const {
2209 if ( ! _matrule) return 0;
2210
2211 int num_leaves = _matrule->_numleaves;
2212 return num_leaves;
2213 }
2214
2215 // Return the number of constants contained within this complex operand
2216 uint OperandForm::num_consts(FormDict &globals) const {
2217 if ( ! _matrule) return 0;
2218
2219 // This is a recursive invocation on all operands in the matchrule
2220 return _matrule->num_consts(globals);
2221 }
2222
2223 // Return the number of constants in match rule with specified type
2224 uint OperandForm::num_consts(FormDict &globals, Form::DataType type) const {
2225 if ( ! _matrule) return 0;
2226
2227 // This is a recursive invocation on all operands in the matchrule
2228 return _matrule->num_consts(globals, type);
2229 }
2230
2231 // Return the number of pointer constants contained within this complex operand
2232 uint OperandForm::num_const_ptrs(FormDict &globals) const {
2233 if ( ! _matrule) return 0;
2234
2235 // This is a recursive invocation on all operands in the matchrule
2236 return _matrule->num_const_ptrs(globals);
2237 }
2238
2239 uint OperandForm::num_edges(FormDict &globals) const {
2240 uint edges = 0;
2241 uint leaves = num_leaves();
2242 uint consts = num_consts(globals);
2243
2244 // If we are matching a constant directly, there are no leaves.
2245 edges = ( leaves > consts ) ? leaves - consts : 0;
2246
2247 // !!!!!
2248 // Special case operands that do not have a corresponding ideal node.
2249 if( (edges == 0) && (consts == 0) ) {
2250 if( constrained_reg_class() != nullptr ) {
2251 edges = 1;
2252 } else {
2253 if( _matrule
2254 && (_matrule->_lChild == nullptr) && (_matrule->_rChild == nullptr) ) {
2255 const Form *form = globals[_matrule->_opType];
2256 OperandForm *oper = form ? form->is_operand() : nullptr;
2257 if( oper ) {
2258 return oper->num_edges(globals);
2259 }
2260 }
2261 }
2262 }
2263
2264 return edges;
2265 }
2266
2267
2268 // Check if this operand is usable for cisc-spilling
2269 bool OperandForm::is_cisc_reg(FormDict &globals) const {
2270 const char *ideal = ideal_type(globals);
2271 bool is_cisc_reg = (ideal && (ideal_to_Reg_type(ideal) != none));
2272 return is_cisc_reg;
2273 }
2274
2275 bool OpClassForm::is_cisc_mem(FormDict &globals) const {
2276 Form::InterfaceType my_interface = interface_type(globals);
2277 return (my_interface == memory_interface);
2278 }
2279
2280
2281 // node matches ideal 'Bool'
2282 bool OperandForm::is_ideal_bool() const {
2283 if( _matrule == nullptr ) return false;
2284
2285 return _matrule->is_ideal_bool();
2286 }
2287
2288 // Require user's name for an sRegX to be stackSlotX
2289 Form::DataType OperandForm::is_user_name_for_sReg() const {
2290 DataType data_type = none;
2291 if( _ident != nullptr ) {
2292 if( strcmp(_ident,"stackSlotI") == 0 ) data_type = Form::idealI;
2293 else if( strcmp(_ident,"stackSlotP") == 0 ) data_type = Form::idealP;
2294 else if( strcmp(_ident,"stackSlotD") == 0 ) data_type = Form::idealD;
2295 else if( strcmp(_ident,"stackSlotF") == 0 ) data_type = Form::idealF;
2296 else if( strcmp(_ident,"stackSlotL") == 0 ) data_type = Form::idealL;
2297 }
2298 assert((data_type == none) || (_matrule == nullptr), "No match-rule for stackSlotX");
2299
2300 return data_type;
2301 }
2302
2303
2304 // Return ideal type, if there is a single ideal type for this operand
2305 const char *OperandForm::ideal_type(FormDict &globals, RegisterForm *registers) const {
2306 const char *type = nullptr;
2307 if (ideal_only()) type = _ident;
2308 else if( _matrule == nullptr ) {
2309 // Check for condition code register
2310 const char *rc_name = constrained_reg_class();
2311 // !!!!!
2312 if (rc_name == nullptr) return nullptr;
2313 // !!!!! !!!!!
2314 // Check constraints on result's register class
2315 if( registers ) {
2316 RegClass *reg_class = registers->getRegClass(rc_name);
2317 assert( reg_class != nullptr, "Register class is not defined");
2318
2319 // Check for ideal type of entries in register class, all are the same type
2320 reg_class->reset();
2321 RegDef *reg_def = reg_class->RegDef_iter();
2322 assert( reg_def != nullptr, "No entries in register class");
2323 assert( reg_def->_idealtype != nullptr, "Did not define ideal type for register");
2324 // Return substring that names the register's ideal type
2325 type = reg_def->_idealtype + 3;
2326 assert( *(reg_def->_idealtype + 0) == 'O', "Expect Op_ prefix");
2327 assert( *(reg_def->_idealtype + 1) == 'p', "Expect Op_ prefix");
2328 assert( *(reg_def->_idealtype + 2) == '_', "Expect Op_ prefix");
2329 }
2330 }
2331 else if( _matrule->_lChild == nullptr && _matrule->_rChild == nullptr ) {
2332 // This operand matches a single type, at the top level.
2333 // Check for ideal type
2334 type = _matrule->_opType;
2335 if( strcmp(type,"Bool") == 0 )
2336 return "Bool";
2337 // transitive lookup
2338 const Form *frm = globals[type];
2339 OperandForm *op = frm->is_operand();
2340 type = op->ideal_type(globals, registers);
2341 }
2342 return type;
2343 }
2344
2345
2346 // If there is a single ideal type for this interface field, return it.
2347 const char *OperandForm::interface_ideal_type(FormDict &globals,
2348 const char *field) const {
2349 const char *ideal_type = nullptr;
2350 const char *value = nullptr;
2351
2352 // Check if "field" is valid for this operand's interface
2353 if ( ! is_interface_field(field, value) ) return ideal_type;
2354
2355 // !!!!! !!!!! !!!!!
2356 // If a valid field has a constant value, identify "ConI" or "ConP" or ...
2357
2358 // Else, lookup type of field's replacement variable
2359
2360 return ideal_type;
2361 }
2362
2363
2364 RegClass* OperandForm::get_RegClass() const {
2365 if (_interface && !_interface->is_RegInterface()) return nullptr;
2366 return globalAD->get_registers()->getRegClass(constrained_reg_class());
2367 }
2368
2369
2370 bool OperandForm::is_bound_register() const {
2371 RegClass* reg_class = get_RegClass();
2372 if (reg_class == nullptr) {
2373 return false;
2374 }
2375
2376 const char* name = ideal_type(globalAD->globalNames());
2377 if (name == nullptr) {
2378 return false;
2379 }
2380
2381 uint size = 0;
2382 if (strcmp(name, "RegFlags") == 0) size = 1;
2383 if (strcmp(name, "RegI") == 0) size = 1;
2384 if (strcmp(name, "RegF") == 0) size = 1;
2385 if (strcmp(name, "RegD") == 0) size = 2;
2386 if (strcmp(name, "RegL") == 0) size = 2;
2387 if (strcmp(name, "RegN") == 0) size = 1;
2388 if (strcmp(name, "RegVectMask") == 0) size = globalAD->get_preproc_def("AARCH64") ? 1 : 2;
2389 if (strcmp(name, "VecX") == 0) size = 4;
2390 if (strcmp(name, "VecY") == 0) size = 8;
2391 if (strcmp(name, "VecZ") == 0) size = 16;
2392 if (strcmp(name, "RegP") == 0) size = globalAD->get_preproc_def("_LP64") ? 2 : 1;
2393 if (size == 0) {
2394 return false;
2395 }
2396 return size == reg_class->size();
2397 }
2398
2399
2400 // Check if this is a valid field for this operand,
2401 // Return 'true' if valid, and set the value to the string the user provided.
2402 bool OperandForm::is_interface_field(const char *field,
2403 const char * &value) const {
2404 return false;
2405 }
2406
2407
2408 // Return register class name if a constraint specifies the register class.
2409 const char *OperandForm::constrained_reg_class() const {
2410 const char *reg_class = nullptr;
2411 if ( _constraint ) {
2412 // !!!!!
2413 Constraint *constraint = _constraint;
2414 if ( strcmp(_constraint->_func,"ALLOC_IN_RC") == 0 ) {
2415 reg_class = _constraint->_arg;
2416 }
2417 }
2418
2419 return reg_class;
2420 }
2421
2422
2423 // Return the register class associated with 'leaf'.
2424 const char *OperandForm::in_reg_class(uint leaf, FormDict &globals) {
2425 const char *reg_class = nullptr; // "RegMask::Empty";
2426
2427 if((_matrule == nullptr) || (_matrule->is_chain_rule(globals))) {
2428 reg_class = constrained_reg_class();
2429 return reg_class;
2430 }
2431 const char *result = nullptr;
2432 const char *name = nullptr;
2433 const char *type = nullptr;
2434 // iterate through all base operands
2435 // until we reach the register that corresponds to "leaf"
2436 // This function is not looking for an ideal type. It needs the first
2437 // level user type associated with the leaf.
2438 for(uint idx = 0;_matrule->base_operand(idx,globals,result,name,type);++idx) {
2439 const Form *form = (_localNames[name] ? _localNames[name] : globals[result]);
2440 OperandForm *oper = form ? form->is_operand() : nullptr;
2441 if( oper ) {
2442 reg_class = oper->constrained_reg_class();
2443 if( reg_class ) {
2444 reg_class = reg_class;
2445 } else {
2446 // ShouldNotReachHere();
2447 }
2448 } else {
2449 // ShouldNotReachHere();
2450 }
2451
2452 // Increment our target leaf position if current leaf is not a candidate.
2453 if( reg_class == nullptr) ++leaf;
2454 // Exit the loop with the value of reg_class when at the correct index
2455 if( idx == leaf ) break;
2456 // May iterate through all base operands if reg_class for 'leaf' is null
2457 }
2458 return reg_class;
2459 }
2460
2461
2462 // Recursive call to construct list of top-level operands.
2463 // Implementation does not modify state of internal structures
2464 void OperandForm::build_components() {
2465 if (_matrule) _matrule->append_components(_localNames, _components);
2466
2467 // Add parameters that "do not appear in match rule".
2468 const char *name;
2469 for (_parameters.reset(); (name = _parameters.iter()) != nullptr;) {
2470 OpClassForm *opForm = _localNames[name]->is_opclass();
2471 assert(opForm != nullptr, "sanity");
2472
2473 if ( _components.operand_position(name) == -1 ) {
2474 _components.insert(name, opForm->_ident, Component::INVALID, false);
2475 }
2476 }
2477
2478 return;
2479 }
2480
2481 int OperandForm::operand_position(const char *name, int usedef) {
2482 return _components.operand_position(name, usedef, this);
2483 }
2484
2485
2486 // Return zero-based position in component list, only counting constants;
2487 // Return -1 if not in list.
2488 int OperandForm::constant_position(FormDict &globals, const Component *last) {
2489 // Iterate through components and count constants preceding 'constant'
2490 int position = 0;
2491 Component *comp;
2492 _components.reset();
2493 while( (comp = _components.iter()) != nullptr && (comp != last) ) {
2494 // Special case for operands that take a single user-defined operand
2495 // Skip the initial definition in the component list.
2496 if( strcmp(comp->_name,this->_ident) == 0 ) continue;
2497
2498 const char *type = comp->_type;
2499 // Lookup operand form for replacement variable's type
2500 const Form *form = globals[type];
2501 assert( form != nullptr, "Component's type not found");
2502 OperandForm *oper = form ? form->is_operand() : nullptr;
2503 if( oper ) {
2504 if( oper->_matrule->is_base_constant(globals) != Form::none ) {
2505 ++position;
2506 }
2507 }
2508 }
2509
2510 // Check for being passed a component that was not in the list
2511 if( comp != last ) position = -1;
2512
2513 return position;
2514 }
2515 // Provide position of constant by "name"
2516 int OperandForm::constant_position(FormDict &globals, const char *name) {
2517 const Component *comp = _components.search(name);
2518 int idx = constant_position( globals, comp );
2519
2520 return idx;
2521 }
2522
2523
2524 // Return zero-based position in component list, only counting constants;
2525 // Return -1 if not in list.
2526 int OperandForm::register_position(FormDict &globals, const char *reg_name) {
2527 // Iterate through components and count registers preceding 'last'
2528 uint position = 0;
2529 Component *comp;
2530 _components.reset();
2531 while( (comp = _components.iter()) != nullptr
2532 && (strcmp(comp->_name,reg_name) != 0) ) {
2533 // Special case for operands that take a single user-defined operand
2534 // Skip the initial definition in the component list.
2535 if( strcmp(comp->_name,this->_ident) == 0 ) continue;
2536
2537 const char *type = comp->_type;
2538 // Lookup operand form for component's type
2539 const Form *form = globals[type];
2540 assert( form != nullptr, "Component's type not found");
2541 OperandForm *oper = form ? form->is_operand() : nullptr;
2542 if( oper ) {
2543 if( oper->_matrule->is_base_register(globals) ) {
2544 ++position;
2545 }
2546 }
2547 }
2548
2549 return position;
2550 }
2551
2552
2553 const char *OperandForm::reduce_result() const {
2554 return _ident;
2555 }
2556 // Return the name of the operand on the right hand side of the binary match
2557 // Return null if there is no right hand side
2558 const char *OperandForm::reduce_right(FormDict &globals) const {
2559 return ( _matrule ? _matrule->reduce_right(globals) : nullptr );
2560 }
2561
2562 // Similar for left
2563 const char *OperandForm::reduce_left(FormDict &globals) const {
2564 return ( _matrule ? _matrule->reduce_left(globals) : nullptr );
2565 }
2566
2567
2568 // --------------------------- FILE *output_routines
2569 //
2570 // Output code for disp_is_oop, if true.
2571 void OperandForm::disp_is_oop(FILE *fp, FormDict &globals) {
2572 // Check it is a memory interface with a non-user-constant disp field
2573 if ( this->_interface == nullptr ) return;
2574 MemInterface *mem_interface = this->_interface->is_MemInterface();
2575 if ( mem_interface == nullptr ) return;
2576 const char *disp = mem_interface->_disp;
2577 if ( *disp != '$' ) return;
2578
2579 // Lookup replacement variable in operand's component list
2580 const char *rep_var = disp + 1;
2581 const Component *comp = this->_components.search(rep_var);
2582 assert( comp != nullptr, "Replacement variable not found in components");
2583 // Lookup operand form for replacement variable's type
2584 const char *type = comp->_type;
2585 Form *form = (Form*)globals[type];
2586 assert( form != nullptr, "Replacement variable's type not found");
2587 OperandForm *op = form->is_operand();
2588 assert( op, "Memory Interface 'disp' can only emit an operand form");
2589 // Check if this is a ConP, which may require relocation
2590 if ( op->is_base_constant(globals) == Form::idealP ) {
2591 // Find the constant's index: _c0, _c1, _c2, ... , _cN
2592 uint idx = op->constant_position( globals, rep_var);
2593 fprintf(fp," virtual relocInfo::relocType disp_reloc() const {");
2594 fprintf(fp, " return _c%d->reloc();", idx);
2595 fprintf(fp, " }\n");
2596 }
2597 }
2598
2599 // Generate code for internal and external format methods
2600 //
2601 // internal access to reg# node->_idx
2602 // access to subsumed constant _c0, _c1,
2603 void OperandForm::int_format(FILE *fp, FormDict &globals, uint index) {
2604 Form::DataType dtype;
2605 if (_matrule && (_matrule->is_base_register(globals) ||
2606 strcmp(ideal_type(globalAD->globalNames()), "RegFlags") == 0)) {
2607 // !!!!! !!!!!
2608 fprintf(fp," { char reg_str[128];\n");
2609 fprintf(fp," ra->dump_register(node,reg_str, sizeof(reg_str));\n");
2610 fprintf(fp," st->print(\"%cs\",reg_str);\n",'%');
2611 fprintf(fp," }\n");
2612 } else if (_matrule && (dtype = _matrule->is_base_constant(globals)) != Form::none) {
2613 format_constant( fp, index, dtype );
2614 } else if (ideal_to_sReg_type(_ident) != Form::none) {
2615 // Special format for Stack Slot Register
2616 fprintf(fp," { char reg_str[128];\n");
2617 fprintf(fp," ra->dump_register(node,reg_str, sizeof(reg_str));\n");
2618 fprintf(fp," st->print(\"%cs\",reg_str);\n",'%');
2619 fprintf(fp," }\n");
2620 } else {
2621 fprintf(fp," st->print(\"No format defined for %s\n\");\n", _ident);
2622 fflush(fp);
2623 fprintf(stderr,"No format defined for %s\n", _ident);
2624 dump();
2625 assert( false,"Internal error:\n output_internal_operand() attempting to output other than a Register or Constant");
2626 }
2627 }
2628
2629 // Similar to "int_format" but for cases where data is external to operand
2630 // external access to reg# node->in(idx)->_idx,
2631 void OperandForm::ext_format(FILE *fp, FormDict &globals, uint index) {
2632 Form::DataType dtype;
2633 if (_matrule && (_matrule->is_base_register(globals) ||
2634 strcmp(ideal_type(globalAD->globalNames()), "RegFlags") == 0)) {
2635 fprintf(fp," { char reg_str[128];\n");
2636 fprintf(fp," ra->dump_register(node->in(idx");
2637 if ( index != 0 ) fprintf(fp, "+%d",index);
2638 fprintf(fp, "),reg_str,sizeof(reg_str));\n");
2639 fprintf(fp," st->print(\"%cs\",reg_str);\n",'%');
2640 fprintf(fp," }\n");
2641 } else if (_matrule && (dtype = _matrule->is_base_constant(globals)) != Form::none) {
2642 format_constant( fp, index, dtype );
2643 } else if (ideal_to_sReg_type(_ident) != Form::none) {
2644 // Special format for Stack Slot Register
2645 fprintf(fp," { char reg_str[128];\n");
2646 fprintf(fp," ra->dump_register(node->in(idx");
2647 if ( index != 0 ) fprintf(fp, "+%d",index);
2648 fprintf(fp, "),reg_str,sizeof(reg_str));\n");
2649 fprintf(fp," st->print(\"%cs\",reg_str);\n",'%');
2650 fprintf(fp," }\n");
2651 } else {
2652 fprintf(fp," st->print(\"No format defined for %s\n\");\n", _ident);
2653 assert( false,"Internal error:\n output_external_operand() attempting to output other than a Register or Constant");
2654 }
2655 }
2656
2657 void OperandForm::format_constant(FILE *fp, uint const_index, uint const_type) {
2658 switch(const_type) {
2659 case Form::idealI: fprintf(fp," st->print(\"#%%d\", _c%d);\n", const_index); break;
2660 case Form::idealP: fprintf(fp," if (_c%d) _c%d->dump_on(st);\n", const_index, const_index); break;
2661 case Form::idealNKlass:
2662 case Form::idealN: fprintf(fp," if (_c%d) _c%d->dump_on(st);\n", const_index, const_index); break;
2663 case Form::idealL: fprintf(fp," st->print(\"#\" INT64_FORMAT, (int64_t)_c%d);\n", const_index); break;
2664 case Form::idealF: fprintf(fp," st->print(\"#%%f\", _c%d);\n", const_index); break;
2665 case Form::idealH: fprintf(fp," st->print(\"#%%d\", _c%d);\n", const_index); break;
2666 case Form::idealD: fprintf(fp," st->print(\"#%%f\", _c%d);\n", const_index); break;
2667 default:
2668 assert( false, "ShouldNotReachHere()");
2669 }
2670 }
2671
2672 // Return the operand form corresponding to the given index, else null.
2673 OperandForm *OperandForm::constant_operand(FormDict &globals,
2674 uint index) {
2675 // !!!!!
2676 // Check behavior on complex operands
2677 uint n_consts = num_consts(globals);
2678 if( n_consts > 0 ) {
2679 uint i = 0;
2680 const char *type;
2681 Component *comp;
2682 _components.reset();
2683 if ((comp = _components.iter()) == nullptr) {
2684 assert(n_consts == 1, "Bad component list detected.\n");
2685 // Current operand is THE operand
2686 if ( index == 0 ) {
2687 return this;
2688 }
2689 } // end if null
2690 else {
2691 // Skip the first component, it can not be a DEF of a constant
2692 do {
2693 type = comp->base_type(globals);
2694 // Check that "type" is a 'ConI', 'ConP', ...
2695 if ( ideal_to_const_type(type) != Form::none ) {
2696 // When at correct component, get corresponding Operand
2697 if ( index == 0 ) {
2698 return globals[comp->_type]->is_operand();
2699 }
2700 // Decrement number of constants to go
2701 --index;
2702 }
2703 } while((comp = _components.iter()) != nullptr);
2704 }
2705 }
2706
2707 // Did not find a constant for this index.
2708 return nullptr;
2709 }
2710
2711 // If this operand has a single ideal type, return its type
2712 Form::DataType OperandForm::simple_type(FormDict &globals) const {
2713 const char *type_name = ideal_type(globals);
2714 Form::DataType type = type_name ? ideal_to_const_type( type_name )
2715 : Form::none;
2716 return type;
2717 }
2718
2719 Form::DataType OperandForm::is_base_constant(FormDict &globals) const {
2720 if ( _matrule == nullptr ) return Form::none;
2721
2722 return _matrule->is_base_constant(globals);
2723 }
2724
2725 // "true" if this operand is a simple type that is swallowed
2726 bool OperandForm::swallowed(FormDict &globals) const {
2727 Form::DataType type = simple_type(globals);
2728 if( type != Form::none ) {
2729 return true;
2730 }
2731
2732 return false;
2733 }
2734
2735 // Output code to access the value of the index'th constant
2736 void OperandForm::access_constant(FILE *fp, FormDict &globals,
2737 uint const_index) {
2738 OperandForm *oper = constant_operand(globals, const_index);
2739 assert( oper, "Index exceeds number of constants in operand");
2740 Form::DataType dtype = oper->is_base_constant(globals);
2741
2742 switch(dtype) {
2743 case idealI: fprintf(fp,"_c%d", const_index); break;
2744 case idealP: fprintf(fp,"_c%d->get_con()",const_index); break;
2745 case idealL: fprintf(fp,"_c%d", const_index); break;
2746 case idealF: fprintf(fp,"_c%d", const_index); break;
2747 case idealH: fprintf(fp,"_c%d", const_index); break;
2748 case idealD: fprintf(fp,"_c%d", const_index); break;
2749 default:
2750 assert( false, "ShouldNotReachHere()");
2751 }
2752 }
2753
2754
2755 void OperandForm::dump() {
2756 output(stderr);
2757 }
2758
2759 void OperandForm::output(FILE *fp) {
2760 fprintf(fp,"\nOperand: %s\n", (_ident?_ident:""));
2761 if (_matrule) _matrule->dump();
2762 if (_interface) _interface->dump();
2763 if (_attribs) _attribs->dump();
2764 if (_predicate) _predicate->dump();
2765 if (_constraint) _constraint->dump();
2766 if (_construct) _construct->dump();
2767 if (_format) _format->dump();
2768 }
2769
2770 void OperandForm::forms_do(FormClosure* f) {
2771 if (_matrule) f->do_form(_matrule);
2772 if (_interface) f->do_form(_interface);
2773 if (_attribs) f->do_form(_attribs);
2774 if (_predicate) f->do_form(_predicate);
2775 if (_constraint) f->do_form(_constraint);
2776 if (_construct) f->do_form(_construct);
2777 if (_format) f->do_form(_format);
2778 _localNames.forms_do(f);
2779 const char* opclass = nullptr;
2780 for ( _classes.reset(); (opclass = _classes.iter()) != nullptr; ) {
2781 f->do_form_by_name(opclass);
2782 }
2783 assert(_components.count() == 0, "skip _compnets");
2784 }
2785
2786 //------------------------------Constraint-------------------------------------
2787 Constraint::Constraint(const char *func, const char *arg)
2788 : _func(func), _arg(arg) {
2789 }
2790 Constraint::~Constraint() { /* not owner of char* */
2791 }
2792
2793 bool Constraint::stack_slots_only() const {
2794 return strcmp(_func, "ALLOC_IN_RC") == 0
2795 && strcmp(_arg, "stack_slots") == 0;
2796 }
2797
2798 void Constraint::dump() {
2799 output(stderr);
2800 }
2801
2802 void Constraint::output(FILE *fp) { // Write info to output files
2803 assert((_func != nullptr && _arg != nullptr),"missing constraint function or arg");
2804 fprintf(fp,"Constraint: %s ( %s )\n", _func, _arg);
2805 }
2806
2807 void Constraint::forms_do(FormClosure *f) {
2808 f->do_form_by_name(_arg);
2809 }
2810
2811 //------------------------------Predicate--------------------------------------
2812 Predicate::Predicate(char *pr)
2813 : _pred(pr) {
2814 }
2815 Predicate::~Predicate() {
2816 }
2817
2818 void Predicate::dump() {
2819 output(stderr);
2820 }
2821
2822 void Predicate::output(FILE *fp) {
2823 fprintf(fp,"Predicate"); // Write to output files
2824 }
2825 //------------------------------Interface--------------------------------------
2826 Interface::Interface(const char *name) : _name(name) {
2827 }
2828 Interface::~Interface() {
2829 }
2830
2831 Form::InterfaceType Interface::interface_type(FormDict &globals) const {
2832 Interface *thsi = (Interface*)this;
2833 if ( thsi->is_RegInterface() ) return Form::register_interface;
2834 if ( thsi->is_MemInterface() ) return Form::memory_interface;
2835 if ( thsi->is_ConstInterface() ) return Form::constant_interface;
2836 if ( thsi->is_CondInterface() ) return Form::conditional_interface;
2837
2838 return Form::no_interface;
2839 }
2840
2841 RegInterface *Interface::is_RegInterface() {
2842 if ( strcmp(_name,"REG_INTER") != 0 )
2843 return nullptr;
2844 return (RegInterface*)this;
2845 }
2846 MemInterface *Interface::is_MemInterface() {
2847 if ( strcmp(_name,"MEMORY_INTER") != 0 ) return nullptr;
2848 return (MemInterface*)this;
2849 }
2850 ConstInterface *Interface::is_ConstInterface() {
2851 if ( strcmp(_name,"CONST_INTER") != 0 ) return nullptr;
2852 return (ConstInterface*)this;
2853 }
2854 CondInterface *Interface::is_CondInterface() {
2855 if ( strcmp(_name,"COND_INTER") != 0 ) return nullptr;
2856 return (CondInterface*)this;
2857 }
2858
2859
2860 void Interface::dump() {
2861 output(stderr);
2862 }
2863
2864 // Write info to output files
2865 void Interface::output(FILE *fp) {
2866 fprintf(fp,"Interface: %s\n", (_name ? _name : "") );
2867 }
2868
2869 //------------------------------RegInterface-----------------------------------
2870 RegInterface::RegInterface() : Interface("REG_INTER") {
2871 }
2872 RegInterface::~RegInterface() {
2873 }
2874
2875 void RegInterface::dump() {
2876 output(stderr);
2877 }
2878
2879 // Write info to output files
2880 void RegInterface::output(FILE *fp) {
2881 Interface::output(fp);
2882 }
2883
2884 //------------------------------ConstInterface---------------------------------
2885 ConstInterface::ConstInterface() : Interface("CONST_INTER") {
2886 }
2887 ConstInterface::~ConstInterface() {
2888 }
2889
2890 void ConstInterface::dump() {
2891 output(stderr);
2892 }
2893
2894 // Write info to output files
2895 void ConstInterface::output(FILE *fp) {
2896 Interface::output(fp);
2897 }
2898
2899 //------------------------------MemInterface-----------------------------------
2900 MemInterface::MemInterface(char *base, char *index, char *scale, char *disp)
2901 : Interface("MEMORY_INTER"), _base(base), _index(index), _scale(scale), _disp(disp) {
2902 }
2903 MemInterface::~MemInterface() {
2904 // not owner of any character arrays
2905 }
2906
2907 void MemInterface::dump() {
2908 output(stderr);
2909 }
2910
2911 // Write info to output files
2912 void MemInterface::output(FILE *fp) {
2913 Interface::output(fp);
2914 if ( _base != nullptr ) fprintf(fp," base == %s\n", _base);
2915 if ( _index != nullptr ) fprintf(fp," index == %s\n", _index);
2916 if ( _scale != nullptr ) fprintf(fp," scale == %s\n", _scale);
2917 if ( _disp != nullptr ) fprintf(fp," disp == %s\n", _disp);
2918 // fprintf(fp,"\n");
2919 }
2920
2921 //------------------------------CondInterface----------------------------------
2922 CondInterface::CondInterface(const char* equal, const char* equal_format,
2923 const char* not_equal, const char* not_equal_format,
2924 const char* less, const char* less_format,
2925 const char* greater_equal, const char* greater_equal_format,
2926 const char* less_equal, const char* less_equal_format,
2927 const char* greater, const char* greater_format,
2928 const char* overflow, const char* overflow_format,
2929 const char* no_overflow, const char* no_overflow_format)
2930 : Interface("COND_INTER"),
2931 _equal(equal), _equal_format(equal_format),
2932 _not_equal(not_equal), _not_equal_format(not_equal_format),
2933 _less(less), _less_format(less_format),
2934 _greater_equal(greater_equal), _greater_equal_format(greater_equal_format),
2935 _less_equal(less_equal), _less_equal_format(less_equal_format),
2936 _greater(greater), _greater_format(greater_format),
2937 _overflow(overflow), _overflow_format(overflow_format),
2938 _no_overflow(no_overflow), _no_overflow_format(no_overflow_format) {
2939 }
2940 CondInterface::~CondInterface() {
2941 // not owner of any character arrays
2942 }
2943
2944 void CondInterface::dump() {
2945 output(stderr);
2946 }
2947
2948 // Write info to output files
2949 void CondInterface::output(FILE *fp) {
2950 Interface::output(fp);
2951 if ( _equal != nullptr ) fprintf(fp," equal == %s\n", _equal);
2952 if ( _not_equal != nullptr ) fprintf(fp," not_equal == %s\n", _not_equal);
2953 if ( _less != nullptr ) fprintf(fp," less == %s\n", _less);
2954 if ( _greater_equal != nullptr ) fprintf(fp," greater_equal == %s\n", _greater_equal);
2955 if ( _less_equal != nullptr ) fprintf(fp," less_equal == %s\n", _less_equal);
2956 if ( _greater != nullptr ) fprintf(fp," greater == %s\n", _greater);
2957 if ( _overflow != nullptr ) fprintf(fp," overflow == %s\n", _overflow);
2958 if ( _no_overflow != nullptr ) fprintf(fp," no_overflow == %s\n", _no_overflow);
2959 // fprintf(fp,"\n");
2960 }
2961
2962 //------------------------------ConstructRule----------------------------------
2963 ConstructRule::ConstructRule(char *cnstr)
2964 : _construct(cnstr) {
2965 }
2966 ConstructRule::~ConstructRule() {
2967 }
2968
2969 void ConstructRule::dump() {
2970 output(stderr);
2971 }
2972
2973 void ConstructRule::output(FILE *fp) {
2974 fprintf(fp,"\nConstruct Rule\n"); // Write to output files
2975 }
2976
2977
2978 //==============================Shared Forms===================================
2979 //------------------------------AttributeForm----------------------------------
2980 int AttributeForm::_insId = 0; // start counter at 0
2981 int AttributeForm::_opId = 0; // start counter at 0
2982 const char* AttributeForm::_ins_cost = "ins_cost"; // required name
2983 const char* AttributeForm::_op_cost = "op_cost"; // required name
2984
2985 AttributeForm::AttributeForm(char *attr, int type, char *attrdef)
2986 : Form(Form::ATTR), _attrname(attr), _atype(type), _attrdef(attrdef) {
2987 if (type==OP_ATTR) {
2988 id = ++_opId;
2989 }
2990 else if (type==INS_ATTR) {
2991 id = ++_insId;
2992 }
2993 else assert( false,"");
2994 }
2995 AttributeForm::~AttributeForm() {
2996 }
2997
2998 // Dynamic type check
2999 AttributeForm *AttributeForm::is_attribute() const {
3000 return (AttributeForm*)this;
3001 }
3002
3003
3004 // inlined // int AttributeForm::type() { return id;}
3005
3006 void AttributeForm::dump() {
3007 output(stderr);
3008 }
3009
3010 void AttributeForm::output(FILE *fp) {
3011 if( _attrname && _attrdef ) {
3012 fprintf(fp,"\n// AttributeForm \nstatic const int %s = %s;\n",
3013 _attrname, _attrdef);
3014 }
3015 else {
3016 fprintf(fp,"\n// AttributeForm missing name %s or definition %s\n",
3017 (_attrname?_attrname:""), (_attrdef?_attrdef:"") );
3018 }
3019 }
3020
3021 //------------------------------Component--------------------------------------
3022 Component::Component(const char *name, const char *type, int usedef)
3023 : _name(name), _type(type), _usedef(usedef) {
3024 _ftype = Form::COMP;
3025 }
3026 Component::~Component() {
3027 }
3028
3029 // True if this component is equal to the parameter.
3030 bool Component::is(int use_def_kill_enum) const {
3031 return (_usedef == use_def_kill_enum ? true : false);
3032 }
3033 // True if this component is used/def'd/kill'd as the parameter suggests.
3034 bool Component::isa(int use_def_kill_enum) const {
3035 return (_usedef & use_def_kill_enum) == use_def_kill_enum;
3036 }
3037
3038 // Extend this component with additional use/def/kill behavior
3039 int Component::promote_use_def_info(int new_use_def) {
3040 _usedef |= new_use_def;
3041
3042 return _usedef;
3043 }
3044
3045 // Check the base type of this component, if it has one
3046 const char *Component::base_type(FormDict &globals) {
3047 const Form *frm = globals[_type];
3048 if (frm == nullptr) return nullptr;
3049 OperandForm *op = frm->is_operand();
3050 if (op == nullptr) return nullptr;
3051 if (op->ideal_only()) return op->_ident;
3052 return (char *)op->ideal_type(globals);
3053 }
3054
3055 void Component::dump() {
3056 output(stderr);
3057 }
3058
3059 void Component::output(FILE *fp) {
3060 fprintf(fp,"Component:"); // Write to output files
3061 fprintf(fp, " name = %s", _name);
3062 fprintf(fp, ", type = %s", _type);
3063 assert(_usedef != 0, "unknown effect");
3064 fprintf(fp, ", use/def = %s\n", getUsedefName());
3065 }
3066
3067
3068 //------------------------------ComponentList---------------------------------
3069 ComponentList::ComponentList() : NameList(), _matchcnt(0) {
3070 }
3071 ComponentList::~ComponentList() {
3072 // // This list may not own its elements if copied via assignment
3073 // Component *component;
3074 // for (reset(); (component = iter()) != nullptr;) {
3075 // delete component;
3076 // }
3077 }
3078
3079 void ComponentList::insert(Component *component, bool mflag) {
3080 NameList::addName((char *)component);
3081 if(mflag) _matchcnt++;
3082 }
3083 void ComponentList::insert(const char *name, const char *opType, int usedef,
3084 bool mflag) {
3085 Component * component = new Component(name, opType, usedef);
3086 insert(component, mflag);
3087 }
3088 Component *ComponentList::current() { return (Component*)NameList::current(); }
3089 Component *ComponentList::iter() { return (Component*)NameList::iter(); }
3090 Component *ComponentList::match_iter() {
3091 if(_iter < _matchcnt) return (Component*)NameList::iter();
3092 return nullptr;
3093 }
3094 Component *ComponentList::post_match_iter() {
3095 Component *comp = iter();
3096 // At end of list?
3097 if ( comp == nullptr ) {
3098 return comp;
3099 }
3100 // In post-match components?
3101 if (_iter > match_count()-1) {
3102 return comp;
3103 }
3104
3105 return post_match_iter();
3106 }
3107
3108 void ComponentList::reset() { NameList::reset(); }
3109 int ComponentList::count() { return NameList::count(); }
3110
3111 Component *ComponentList::operator[](int position) {
3112 // Shortcut complete iteration if there are not enough entries
3113 if (position >= count()) return nullptr;
3114
3115 int index = 0;
3116 Component *component = nullptr;
3117 for (reset(); (component = iter()) != nullptr;) {
3118 if (index == position) {
3119 return component;
3120 }
3121 ++index;
3122 }
3123
3124 return nullptr;
3125 }
3126
3127 const Component *ComponentList::search(const char *name) {
3128 PreserveIter pi(this);
3129 reset();
3130 for( Component *comp = nullptr; ((comp = iter()) != nullptr); ) {
3131 if( strcmp(comp->_name,name) == 0 ) return comp;
3132 }
3133
3134 return nullptr;
3135 }
3136
3137 // Return number of USEs + number of DEFs
3138 // When there are no components, or the first component is a USE,
3139 // then we add '1' to hold a space for the 'result' operand.
3140 int ComponentList::num_operands() {
3141 PreserveIter pi(this);
3142 uint count = 1; // result operand
3143 uint position = 0;
3144
3145 Component *component = nullptr;
3146 for( reset(); (component = iter()) != nullptr; ++position ) {
3147 if( component->isa(Component::USE) ||
3148 ( position == 0 && (! component->isa(Component::DEF))) ) {
3149 ++count;
3150 }
3151 }
3152
3153 return count;
3154 }
3155
3156 // Return zero-based position of operand 'name' in list; -1 if not in list.
3157 // if parameter 'usedef' is ::USE, it will match USE, USE_DEF, ...
3158 int ComponentList::operand_position(const char *name, int usedef, Form *fm) {
3159 PreserveIter pi(this);
3160 int position = 0;
3161 int num_opnds = num_operands();
3162 Component *component;
3163 Component* preceding_non_use = nullptr;
3164 Component* first_def = nullptr;
3165 for (reset(); (component = iter()) != nullptr; ++position) {
3166 // When the first component is not a DEF,
3167 // leave space for the result operand!
3168 if ( position==0 && (! component->isa(Component::DEF)) ) {
3169 ++position;
3170 ++num_opnds;
3171 }
3172 if (strcmp(name, component->_name)==0 && (component->isa(usedef))) {
3173 // When the first entry in the component list is a DEF and a USE
3174 // Treat them as being separate, a DEF first, then a USE
3175 if( position==0
3176 && usedef==Component::USE && component->isa(Component::DEF) ) {
3177 assert(position+1 < num_opnds, "advertised index in bounds");
3178 return position+1;
3179 } else {
3180 if( preceding_non_use && strcmp(component->_name, preceding_non_use->_name) ) {
3181 fprintf(stderr, "the name '%s(%s)' should not precede the name '%s(%s)'",
3182 preceding_non_use->_name, preceding_non_use->getUsedefName(),
3183 name, component->getUsedefName());
3184 if (fm && fm->is_instruction()) fprintf(stderr, "in form '%s'", fm->is_instruction()->_ident);
3185 if (fm && fm->is_operand()) fprintf(stderr, "in form '%s'", fm->is_operand()->_ident);
3186 fprintf(stderr, "\n");
3187 }
3188 if( position >= num_opnds ) {
3189 fprintf(stderr, "the name '%s' is too late in its name list", name);
3190 if (fm && fm->is_instruction()) fprintf(stderr, "in form '%s'", fm->is_instruction()->_ident);
3191 if (fm && fm->is_operand()) fprintf(stderr, "in form '%s'", fm->is_operand()->_ident);
3192 fprintf(stderr, "\n");
3193 }
3194 assert(position < num_opnds, "advertised index in bounds");
3195 return position;
3196 }
3197 }
3198 if( component->isa(Component::DEF)
3199 && component->isa(Component::USE) ) {
3200 ++position;
3201 if( position != 1 ) --position; // only use two slots for the 1st USE_DEF
3202 }
3203 if( component->isa(Component::DEF) && !first_def ) {
3204 first_def = component;
3205 }
3206 if( !component->isa(Component::USE) && component != first_def ) {
3207 preceding_non_use = component;
3208 } else if( preceding_non_use && !strcmp(component->_name, preceding_non_use->_name) ) {
3209 preceding_non_use = nullptr;
3210 }
3211 }
3212 return Not_in_list;
3213 }
3214
3215 // Find position for this name, regardless of use/def information
3216 int ComponentList::operand_position(const char *name) {
3217 PreserveIter pi(this);
3218 int position = 0;
3219 Component *component;
3220 for (reset(); (component = iter()) != nullptr; ++position) {
3221 // When the first component is not a DEF,
3222 // leave space for the result operand!
3223 if ( position==0 && (! component->isa(Component::DEF)) ) {
3224 ++position;
3225 }
3226 if (strcmp(name, component->_name)==0) {
3227 return position;
3228 }
3229 if( component->isa(Component::DEF)
3230 && component->isa(Component::USE) ) {
3231 ++position;
3232 if( position != 1 ) --position; // only use two slots for the 1st USE_DEF
3233 }
3234 }
3235 return Not_in_list;
3236 }
3237
3238 int ComponentList::operand_position_format(const char *name, Form *fm) {
3239 PreserveIter pi(this);
3240 int first_position = operand_position(name);
3241 int use_position = operand_position(name, Component::USE, fm);
3242
3243 return ((first_position < use_position) ? use_position : first_position);
3244 }
3245
3246 int ComponentList::label_position() {
3247 PreserveIter pi(this);
3248 int position = 0;
3249 reset();
3250 for( Component *comp; (comp = iter()) != nullptr; ++position) {
3251 // When the first component is not a DEF,
3252 // leave space for the result operand!
3253 if ( position==0 && (! comp->isa(Component::DEF)) ) {
3254 ++position;
3255 }
3256 if (strcmp(comp->_type, "label")==0) {
3257 return position;
3258 }
3259 if( comp->isa(Component::DEF)
3260 && comp->isa(Component::USE) ) {
3261 ++position;
3262 if( position != 1 ) --position; // only use two slots for the 1st USE_DEF
3263 }
3264 }
3265
3266 return -1;
3267 }
3268
3269 int ComponentList::method_position() {
3270 PreserveIter pi(this);
3271 int position = 0;
3272 reset();
3273 for( Component *comp; (comp = iter()) != nullptr; ++position) {
3274 // When the first component is not a DEF,
3275 // leave space for the result operand!
3276 if ( position==0 && (! comp->isa(Component::DEF)) ) {
3277 ++position;
3278 }
3279 if (strcmp(comp->_type, "method")==0) {
3280 return position;
3281 }
3282 if( comp->isa(Component::DEF)
3283 && comp->isa(Component::USE) ) {
3284 ++position;
3285 if( position != 1 ) --position; // only use two slots for the 1st USE_DEF
3286 }
3287 }
3288
3289 return -1;
3290 }
3291
3292 void ComponentList::dump() { output(stderr); }
3293
3294 void ComponentList::output(FILE *fp) {
3295 PreserveIter pi(this);
3296 fprintf(fp, "\n");
3297 Component *component;
3298 for (reset(); (component = iter()) != nullptr;) {
3299 component->output(fp);
3300 }
3301 fprintf(fp, "\n");
3302 }
3303
3304 //------------------------------MatchNode--------------------------------------
3305 MatchNode::MatchNode(ArchDesc &ad, const char *result, const char *mexpr,
3306 const char *opType, MatchNode *lChild, MatchNode *rChild)
3307 : _AD(ad), _result(result), _name(mexpr), _opType(opType),
3308 _lChild(lChild), _rChild(rChild), _internalop(nullptr), _numleaves(0),
3309 _commutative_id(0) {
3310 _numleaves = (lChild ? lChild->_numleaves : 0)
3311 + (rChild ? rChild->_numleaves : 0);
3312 }
3313
3314 MatchNode::MatchNode(ArchDesc &ad, MatchNode& mnode)
3315 : _AD(ad), _result(mnode._result), _name(mnode._name),
3316 _opType(mnode._opType), _lChild(mnode._lChild), _rChild(mnode._rChild),
3317 _internalop(nullptr), _numleaves(mnode._numleaves),
3318 _commutative_id(mnode._commutative_id) {
3319 }
3320
3321 MatchNode::MatchNode(ArchDesc &ad, MatchNode& mnode, int clone)
3322 : _AD(ad), _result(mnode._result), _name(mnode._name),
3323 _opType(mnode._opType),
3324 _internalop(nullptr), _numleaves(mnode._numleaves),
3325 _commutative_id(mnode._commutative_id) {
3326 if (mnode._lChild) {
3327 _lChild = new MatchNode(ad, *mnode._lChild, clone);
3328 } else {
3329 _lChild = nullptr;
3330 }
3331 if (mnode._rChild) {
3332 _rChild = new MatchNode(ad, *mnode._rChild, clone);
3333 } else {
3334 _rChild = nullptr;
3335 }
3336 }
3337
3338 MatchNode::~MatchNode() {
3339 // // This node may not own its children if copied via assignment
3340 // if( _lChild ) delete _lChild;
3341 // if( _rChild ) delete _rChild;
3342 }
3343
3344 bool MatchNode::find_type(const char *type, int &position) const {
3345 if ( (_lChild != nullptr) && (_lChild->find_type(type, position)) ) return true;
3346 if ( (_rChild != nullptr) && (_rChild->find_type(type, position)) ) return true;
3347
3348 if (strcmp(type,_opType)==0) {
3349 return true;
3350 } else {
3351 ++position;
3352 }
3353 return false;
3354 }
3355
3356 // Recursive call collecting info on top-level operands, not transitive.
3357 // Implementation does not modify state of internal structures.
3358 void MatchNode::append_components(FormDict& locals, ComponentList& components,
3359 bool def_flag) const {
3360 int usedef = def_flag ? Component::DEF : Component::USE;
3361 FormDict &globals = _AD.globalNames();
3362
3363 assert (_name != nullptr, "MatchNode::build_components encountered empty node\n");
3364 // Base case
3365 if (_lChild==nullptr && _rChild==nullptr) {
3366 // If _opType is not an operation, do not build a component for it #####
3367 const Form *f = globals[_opType];
3368 if( f != nullptr ) {
3369 // Add non-ideals that are operands, operand-classes,
3370 if( ! f->ideal_only()
3371 && (f->is_opclass() || f->is_operand()) ) {
3372 components.insert(_name, _opType, usedef, true);
3373 }
3374 }
3375 return;
3376 }
3377 // Promote results of "Set" to DEF
3378 bool tmpdef_flag = (!strcmp(_opType, "Set")) ? true : false;
3379 if (_lChild) _lChild->append_components(locals, components, tmpdef_flag);
3380 tmpdef_flag = false; // only applies to component immediately following 'Set'
3381 if (_rChild) _rChild->append_components(locals, components, tmpdef_flag);
3382 }
3383
3384 // Find the n'th base-operand in the match node,
3385 // recursively investigates match rules of user-defined operands.
3386 //
3387 // Implementation does not modify state of internal structures since they
3388 // can be shared.
3389 bool MatchNode::base_operand(uint &position, FormDict &globals,
3390 const char * &result, const char * &name,
3391 const char * &opType) const {
3392 assert (_name != nullptr, "MatchNode::base_operand encountered empty node\n");
3393 // Base case
3394 if (_lChild==nullptr && _rChild==nullptr) {
3395 // Check for special case: "Universe", "label"
3396 if (strcmp(_opType,"Universe") == 0 || strcmp(_opType,"label")==0 ) {
3397 if (position == 0) {
3398 result = _result;
3399 name = _name;
3400 opType = _opType;
3401 return 1;
3402 } else {
3403 -- position;
3404 return 0;
3405 }
3406 }
3407
3408 const Form *form = globals[_opType];
3409 MatchNode *matchNode = nullptr;
3410 // Check for user-defined type
3411 if (form) {
3412 // User operand or instruction?
3413 OperandForm *opForm = form->is_operand();
3414 InstructForm *inForm = form->is_instruction();
3415 if ( opForm ) {
3416 matchNode = (MatchNode*)opForm->_matrule;
3417 } else if ( inForm ) {
3418 matchNode = (MatchNode*)inForm->_matrule;
3419 }
3420 }
3421 // if this is user-defined, recurse on match rule
3422 // User-defined operand and instruction forms have a match-rule.
3423 if (matchNode) {
3424 return (matchNode->base_operand(position,globals,result,name,opType));
3425 } else {
3426 // Either not a form, or a system-defined form (no match rule).
3427 if (position==0) {
3428 result = _result;
3429 name = _name;
3430 opType = _opType;
3431 return 1;
3432 } else {
3433 --position;
3434 return 0;
3435 }
3436 }
3437
3438 } else {
3439 // Examine the left child and right child as well
3440 if (_lChild) {
3441 if (_lChild->base_operand(position, globals, result, name, opType))
3442 return 1;
3443 }
3444
3445 if (_rChild) {
3446 if (_rChild->base_operand(position, globals, result, name, opType))
3447 return 1;
3448 }
3449 }
3450
3451 return 0;
3452 }
3453
3454 // Recursive call on all operands' match rules in my match rule.
3455 uint MatchNode::num_consts(FormDict &globals) const {
3456 uint index = 0;
3457 uint num_consts = 0;
3458 const char *result;
3459 const char *name;
3460 const char *opType;
3461
3462 for (uint position = index;
3463 base_operand(position,globals,result,name,opType); position = index) {
3464 ++index;
3465 if( ideal_to_const_type(opType) ) num_consts++;
3466 }
3467
3468 return num_consts;
3469 }
3470
3471 // Recursive call on all operands' match rules in my match rule.
3472 // Constants in match rule subtree with specified type
3473 uint MatchNode::num_consts(FormDict &globals, Form::DataType type) const {
3474 uint index = 0;
3475 uint num_consts = 0;
3476 const char *result;
3477 const char *name;
3478 const char *opType;
3479
3480 for (uint position = index;
3481 base_operand(position,globals,result,name,opType); position = index) {
3482 ++index;
3483 if( ideal_to_const_type(opType) == type ) num_consts++;
3484 }
3485
3486 return num_consts;
3487 }
3488
3489 // Recursive call on all operands' match rules in my match rule.
3490 uint MatchNode::num_const_ptrs(FormDict &globals) const {
3491 return num_consts( globals, Form::idealP );
3492 }
3493
3494 bool MatchNode::sets_result() const {
3495 return ( (strcmp(_name,"Set") == 0) ? true : false );
3496 }
3497
3498 const char *MatchNode::reduce_right(FormDict &globals) const {
3499 // If there is no right reduction, return null.
3500 const char *rightStr = nullptr;
3501
3502 // If we are a "Set", start from the right child.
3503 const MatchNode *const mnode = sets_result() ?
3504 (const MatchNode *)this->_rChild :
3505 (const MatchNode *)this;
3506
3507 // If our right child exists, it is the right reduction
3508 if ( mnode->_rChild ) {
3509 rightStr = mnode->_rChild->_internalop ? mnode->_rChild->_internalop
3510 : mnode->_rChild->_opType;
3511 }
3512 // Else, May be simple chain rule: (Set dst operand_form), rightStr=nullptr;
3513 return rightStr;
3514 }
3515
3516 const char *MatchNode::reduce_left(FormDict &globals) const {
3517 // If there is no left reduction, return null.
3518 const char *leftStr = nullptr;
3519
3520 // If we are a "Set", start from the right child.
3521 const MatchNode *const mnode = sets_result() ?
3522 (const MatchNode *)this->_rChild :
3523 (const MatchNode *)this;
3524
3525 // If our left child exists, it is the left reduction
3526 if ( mnode->_lChild ) {
3527 leftStr = mnode->_lChild->_internalop ? mnode->_lChild->_internalop
3528 : mnode->_lChild->_opType;
3529 } else {
3530 // May be simple chain rule: (Set dst operand_form_source)
3531 if ( sets_result() ) {
3532 OperandForm *oper = globals[mnode->_opType]->is_operand();
3533 if( oper ) {
3534 leftStr = mnode->_opType;
3535 }
3536 }
3537 }
3538 return leftStr;
3539 }
3540
3541 //------------------------------count_instr_names------------------------------
3542 // Count occurrences of operands names in the leaves of the instruction
3543 // match rule.
3544 void MatchNode::count_instr_names( Dict &names ) {
3545 if( _lChild ) _lChild->count_instr_names(names);
3546 if( _rChild ) _rChild->count_instr_names(names);
3547 if( !_lChild && !_rChild ) {
3548 uintptr_t cnt = (uintptr_t)names[_name];
3549 cnt++; // One more name found
3550 names.Insert(_name,(void*)cnt);
3551 }
3552 }
3553
3554 //------------------------------build_instr_pred-------------------------------
3555 // Build a path to 'name' in buf. Actually only build if cnt is zero, so we
3556 // can skip some leading instances of 'name'.
3557 int MatchNode::build_instr_pred( char *buf, const char *name, int cnt, int path_bitmask, int level) {
3558 if( _lChild ) {
3559 cnt = _lChild->build_instr_pred(buf, name, cnt, path_bitmask, level+1);
3560 if( cnt < 0 ) {
3561 return cnt; // Found it, all done
3562 }
3563 }
3564 if( _rChild ) {
3565 path_bitmask |= 1 << level;
3566 cnt = _rChild->build_instr_pred( buf, name, cnt, path_bitmask, level+1);
3567 if( cnt < 0 ) {
3568 return cnt; // Found it, all done
3569 }
3570 }
3571 if( !_lChild && !_rChild ) { // Found a leaf
3572 // Wrong name? Give up...
3573 if( strcmp(name,_name) ) return cnt;
3574 if( !cnt ) {
3575 for(int i = 0; i < level; i++) {
3576 int kid = path_bitmask & (1 << i);
3577 if (0 == kid) {
3578 strcpy( buf, "_kids[0]->" );
3579 } else {
3580 strcpy( buf, "_kids[1]->" );
3581 }
3582 buf += 10;
3583 }
3584 strcpy( buf, "_leaf" );
3585 }
3586 return cnt-1;
3587 }
3588 return cnt;
3589 }
3590
3591
3592 //------------------------------build_internalop-------------------------------
3593 // Build string representation of subtree
3594 void MatchNode::build_internalop( ) {
3595 char *iop, *subtree;
3596 const char *lstr, *rstr;
3597 // Build string representation of subtree
3598 // Operation lchildType rchildType
3599 int len = (int)strlen(_opType) + 4;
3600 lstr = (_lChild) ? ((_lChild->_internalop) ?
3601 _lChild->_internalop : _lChild->_opType) : "";
3602 rstr = (_rChild) ? ((_rChild->_internalop) ?
3603 _rChild->_internalop : _rChild->_opType) : "";
3604 len += (int)strlen(lstr) + (int)strlen(rstr);
3605 subtree = (char *)AdlAllocateHeap(len);
3606 snprintf_checked(subtree, len, "_%s_%s_%s", _opType, lstr, rstr);
3607 // Hash the subtree string in _internalOps; if a name exists, use it
3608 iop = (char *)_AD._internalOps[subtree];
3609 // Else create a unique name, and add it to the hash table
3610 if (iop == nullptr) {
3611 iop = subtree;
3612 _AD._internalOps.Insert(subtree, iop);
3613 _AD._internalOpNames.addName(iop);
3614 _AD._internalMatch.Insert(iop, this);
3615 }
3616 // Add the internal operand name to the MatchNode
3617 _internalop = iop;
3618 _result = iop;
3619 }
3620
3621
3622 void MatchNode::dump() {
3623 output(stderr);
3624 }
3625
3626 void MatchNode::output(FILE *fp) {
3627 if (_lChild==nullptr && _rChild==nullptr) {
3628 fprintf(fp," %s",_name); // operand
3629 }
3630 else {
3631 fprintf(fp," (%s ",_name); // " (opcodeName "
3632 if(_lChild) _lChild->output(fp); // left operand
3633 if(_rChild) _rChild->output(fp); // right operand
3634 fprintf(fp,")"); // ")"
3635 }
3636 }
3637
3638 void MatchNode::forms_do(FormClosure *f) {
3639 f->do_form_by_name(_name);
3640 if (_lChild) f->do_form(_lChild);
3641 if (_rChild) f->do_form(_rChild);
3642 }
3643
3644 int MatchNode::needs_ideal_memory_edge(FormDict &globals) const {
3645 static const char *needs_ideal_memory_list[] = {
3646 "StoreI","StoreL","StoreP","StoreN","StoreNKlass","StoreD","StoreF" ,
3647 "StoreB","StoreC","Store" ,"StoreFP",
3648 "LoadI", "LoadL", "LoadP" ,"LoadN", "LoadD" ,"LoadF" ,
3649 "LoadB" , "LoadUB", "LoadUS" ,"LoadS" ,"Load" ,
3650 "StoreVector", "LoadVector", "LoadVectorMasked", "StoreVectorMasked",
3651 "LoadVectorGather", "StoreVectorScatter", "LoadVectorGatherMasked", "StoreVectorScatterMasked",
3652 "LoadRange", "LoadKlass", "LoadNKlass", "LoadL_unaligned", "LoadD_unaligned",
3653 "CompareAndSwapB", "CompareAndSwapS", "CompareAndSwapI", "CompareAndSwapL", "CompareAndSwapP", "CompareAndSwapN",
3654 "WeakCompareAndSwapB", "WeakCompareAndSwapS", "WeakCompareAndSwapI", "WeakCompareAndSwapL", "WeakCompareAndSwapP", "WeakCompareAndSwapN",
3655 "CompareAndExchangeB", "CompareAndExchangeS", "CompareAndExchangeI", "CompareAndExchangeL", "CompareAndExchangeP", "CompareAndExchangeN",
3656 #if INCLUDE_SHENANDOAHGC
3657 "ShenandoahCompareAndSwapN", "ShenandoahCompareAndSwapP", "ShenandoahWeakCompareAndSwapP", "ShenandoahWeakCompareAndSwapN", "ShenandoahCompareAndExchangeP", "ShenandoahCompareAndExchangeN",
3658 #endif
3659 "GetAndSetB", "GetAndSetS", "GetAndAddI", "GetAndSetI", "GetAndSetP",
3660 "GetAndAddB", "GetAndAddS", "GetAndAddL", "GetAndSetL", "GetAndSetN",
3661 "ClearArray"
3662 };
3663 int cnt = sizeof(needs_ideal_memory_list)/sizeof(char*);
3664 if( strcmp(_opType,"PrefetchAllocation")==0 )
3665 return 1;
3666 if( strcmp(_opType,"CacheWB")==0 )
3667 return 1;
3668 if( strcmp(_opType,"CacheWBPreSync")==0 )
3669 return 1;
3670 if( strcmp(_opType,"CacheWBPostSync")==0 )
3671 return 1;
3672 if( _lChild ) {
3673 const char *opType = _lChild->_opType;
3674 for( int i=0; i<cnt; i++ )
3675 if( strcmp(opType,needs_ideal_memory_list[i]) == 0 )
3676 return 1;
3677 if( _lChild->needs_ideal_memory_edge(globals) )
3678 return 1;
3679 }
3680 if( _rChild ) {
3681 const char *opType = _rChild->_opType;
3682 for( int i=0; i<cnt; i++ )
3683 if( strcmp(opType,needs_ideal_memory_list[i]) == 0 )
3684 return 1;
3685 if( _rChild->needs_ideal_memory_edge(globals) )
3686 return 1;
3687 }
3688
3689 return 0;
3690 }
3691
3692 // TRUE if defines a derived oop, and so needs a base oop edge present
3693 // post-matching.
3694 int MatchNode::needs_base_oop_edge() const {
3695 if( !strcmp(_opType,"AddP") ) return 1;
3696 if( strcmp(_opType,"Set") ) return 0;
3697 return !strcmp(_rChild->_opType,"AddP");
3698 }
3699
3700 int InstructForm::needs_base_oop_edge(FormDict &globals) const {
3701 if( is_simple_chain_rule(globals) ) {
3702 const char *src = _matrule->_rChild->_opType;
3703 OperandForm *src_op = globals[src]->is_operand();
3704 assert( src_op, "Not operand class of chain rule" );
3705 return src_op->_matrule ? src_op->_matrule->needs_base_oop_edge() : 0;
3706 } // Else check instruction
3707
3708 return _matrule ? _matrule->needs_base_oop_edge() : 0;
3709 }
3710
3711
3712
3713 //-------------------------cisc spilling methods-------------------------------
3714 // helper routines and methods for detecting cisc-spilling instructions
3715 //-------------------------cisc_spill_merge------------------------------------
3716 int MatchNode::cisc_spill_merge(int left_spillable, int right_spillable) {
3717 int cisc_spillable = Maybe_cisc_spillable;
3718
3719 // Combine results of left and right checks
3720 if( (left_spillable == Maybe_cisc_spillable) && (right_spillable == Maybe_cisc_spillable) ) {
3721 // neither side is spillable, nor prevents cisc spilling
3722 cisc_spillable = Maybe_cisc_spillable;
3723 }
3724 else if( (left_spillable == Maybe_cisc_spillable) && (right_spillable > Maybe_cisc_spillable) ) {
3725 // right side is spillable
3726 cisc_spillable = right_spillable;
3727 }
3728 else if( (right_spillable == Maybe_cisc_spillable) && (left_spillable > Maybe_cisc_spillable) ) {
3729 // left side is spillable
3730 cisc_spillable = left_spillable;
3731 }
3732 else if( (left_spillable == Not_cisc_spillable) || (right_spillable == Not_cisc_spillable) ) {
3733 // left or right prevents cisc spilling this instruction
3734 cisc_spillable = Not_cisc_spillable;
3735 }
3736 else {
3737 // Only allow one to spill
3738 cisc_spillable = Not_cisc_spillable;
3739 }
3740
3741 return cisc_spillable;
3742 }
3743
3744 //-------------------------root_ops_match--------------------------------------
3745 bool static root_ops_match(FormDict &globals, const char *op1, const char *op2) {
3746 // Base Case: check that the current operands/operations match
3747 assert( op1, "Must have op's name");
3748 assert( op2, "Must have op's name");
3749 const Form *form1 = globals[op1];
3750 const Form *form2 = globals[op2];
3751
3752 return (form1 == form2);
3753 }
3754
3755 //-------------------------cisc_spill_match_node-------------------------------
3756 // Recursively check two MatchRules for legal conversion via cisc-spilling
3757 int MatchNode::cisc_spill_match(FormDict& globals, RegisterForm* registers, MatchNode* mRule2, const char* &operand, const char* ®_type) {
3758 int cisc_spillable = Maybe_cisc_spillable;
3759 int left_spillable = Maybe_cisc_spillable;
3760 int right_spillable = Maybe_cisc_spillable;
3761
3762 // Check that each has same number of operands at this level
3763 if( (_lChild && !(mRule2->_lChild)) || (_rChild && !(mRule2->_rChild)) )
3764 return Not_cisc_spillable;
3765
3766 // Base Case: check that the current operands/operations match
3767 // or are CISC spillable
3768 assert( _opType, "Must have _opType");
3769 assert( mRule2->_opType, "Must have _opType");
3770 const Form *form = globals[_opType];
3771 const Form *form2 = globals[mRule2->_opType];
3772 if( form == form2 ) {
3773 cisc_spillable = Maybe_cisc_spillable;
3774 } else {
3775 const InstructForm *form2_inst = form2 ? form2->is_instruction() : nullptr;
3776 const char *name_left = mRule2->_lChild ? mRule2->_lChild->_opType : nullptr;
3777 const char *name_right = mRule2->_rChild ? mRule2->_rChild->_opType : nullptr;
3778 DataType data_type = Form::none;
3779 if (form->is_operand()) {
3780 // Make sure the loadX matches the type of the reg
3781 data_type = form->ideal_to_Reg_type(form->is_operand()->ideal_type(globals));
3782 }
3783 // Detect reg vs (loadX memory)
3784 if( form->is_cisc_reg(globals)
3785 && form2_inst
3786 && data_type != Form::none
3787 && (is_load_from_memory(mRule2->_opType) == data_type) // reg vs. (load memory)
3788 && (name_left != nullptr) // NOT (load)
3789 && (name_right == nullptr) ) { // NOT (load memory foo)
3790 const Form *form2_left = globals[name_left];
3791 if( form2_left && form2_left->is_cisc_mem(globals) ) {
3792 cisc_spillable = Is_cisc_spillable;
3793 operand = _name;
3794 reg_type = _result;
3795 return Is_cisc_spillable;
3796 } else {
3797 cisc_spillable = Not_cisc_spillable;
3798 }
3799 }
3800 // Detect reg vs memory
3801 else if (form->is_cisc_reg(globals) && form2 != nullptr && form2->is_cisc_mem(globals)) {
3802 cisc_spillable = Is_cisc_spillable;
3803 operand = _name;
3804 reg_type = _result;
3805 return Is_cisc_spillable;
3806 } else {
3807 cisc_spillable = Not_cisc_spillable;
3808 }
3809 }
3810
3811 // If cisc is still possible, check rest of tree
3812 if( cisc_spillable == Maybe_cisc_spillable ) {
3813 // Check that each has same number of operands at this level
3814 if( (_lChild && !(mRule2->_lChild)) || (_rChild && !(mRule2->_rChild)) ) return Not_cisc_spillable;
3815
3816 // Check left operands
3817 if( (_lChild == nullptr) && (mRule2->_lChild == nullptr) ) {
3818 left_spillable = Maybe_cisc_spillable;
3819 } else if (_lChild != nullptr) {
3820 left_spillable = _lChild->cisc_spill_match(globals, registers, mRule2->_lChild, operand, reg_type);
3821 }
3822
3823 // Check right operands
3824 if( (_rChild == nullptr) && (mRule2->_rChild == nullptr) ) {
3825 right_spillable = Maybe_cisc_spillable;
3826 } else if (_rChild != nullptr) {
3827 right_spillable = _rChild->cisc_spill_match(globals, registers, mRule2->_rChild, operand, reg_type);
3828 }
3829
3830 // Combine results of left and right checks
3831 cisc_spillable = cisc_spill_merge(left_spillable, right_spillable);
3832 }
3833
3834 return cisc_spillable;
3835 }
3836
3837 //---------------------------cisc_spill_match_rule------------------------------
3838 // Recursively check two MatchRules for legal conversion via cisc-spilling
3839 // This method handles the root of Match tree,
3840 // general recursive checks done in MatchNode
3841 int MatchRule::matchrule_cisc_spill_match(FormDict& globals, RegisterForm* registers,
3842 MatchRule* mRule2, const char* &operand,
3843 const char* ®_type) {
3844 int cisc_spillable = Maybe_cisc_spillable;
3845 int left_spillable = Maybe_cisc_spillable;
3846 int right_spillable = Maybe_cisc_spillable;
3847
3848 // Check that each sets a result
3849 if( !(sets_result() && mRule2->sets_result()) ) return Not_cisc_spillable;
3850 // Check that each has same number of operands at this level
3851 if( (_lChild && !(mRule2->_lChild)) || (_rChild && !(mRule2->_rChild)) ) return Not_cisc_spillable;
3852
3853 // Check left operands: at root, must be target of 'Set'
3854 if( (_lChild == nullptr) || (mRule2->_lChild == nullptr) ) {
3855 left_spillable = Not_cisc_spillable;
3856 } else {
3857 // Do not support cisc-spilling instruction's target location
3858 if( root_ops_match(globals, _lChild->_opType, mRule2->_lChild->_opType) ) {
3859 left_spillable = Maybe_cisc_spillable;
3860 } else {
3861 left_spillable = Not_cisc_spillable;
3862 }
3863 }
3864
3865 // Check right operands: recursive walk to identify reg->mem operand
3866 if (_rChild == nullptr) {
3867 if (mRule2->_rChild == nullptr) {
3868 right_spillable = Maybe_cisc_spillable;
3869 } else {
3870 assert(0, "_rChild should not be null");
3871 }
3872 } else {
3873 right_spillable = _rChild->cisc_spill_match(globals, registers, mRule2->_rChild, operand, reg_type);
3874 }
3875
3876 // Combine results of left and right checks
3877 cisc_spillable = cisc_spill_merge(left_spillable, right_spillable);
3878
3879 return cisc_spillable;
3880 }
3881
3882 //----------------------------- equivalent ------------------------------------
3883 // Recursively check to see if two match rules are equivalent.
3884 // This rule handles the root.
3885 bool MatchRule::equivalent(FormDict &globals, MatchNode *mRule2) {
3886 // Check that each sets a result
3887 if (sets_result() != mRule2->sets_result()) {
3888 return false;
3889 }
3890
3891 // Check that the current operands/operations match
3892 assert( _opType, "Must have _opType");
3893 assert( mRule2->_opType, "Must have _opType");
3894 const Form *form = globals[_opType];
3895 const Form *form2 = globals[mRule2->_opType];
3896 if( form != form2 ) {
3897 return false;
3898 }
3899
3900 if (_lChild ) {
3901 if( !_lChild->equivalent(globals, mRule2->_lChild) )
3902 return false;
3903 } else if (mRule2->_lChild) {
3904 return false; // I have null left child, mRule2 has non-null left child.
3905 }
3906
3907 if (_rChild ) {
3908 if( !_rChild->equivalent(globals, mRule2->_rChild) )
3909 return false;
3910 } else if (mRule2->_rChild) {
3911 return false; // I have null right child, mRule2 has non-null right child.
3912 }
3913
3914 // We've made it through the gauntlet.
3915 return true;
3916 }
3917
3918 //----------------------------- equivalent ------------------------------------
3919 // Recursively check to see if two match rules are equivalent.
3920 // This rule handles the operands.
3921 bool MatchNode::equivalent(FormDict &globals, MatchNode *mNode2) {
3922 if( !mNode2 )
3923 return false;
3924
3925 // Check that the current operands/operations match
3926 assert( _opType, "Must have _opType");
3927 assert( mNode2->_opType, "Must have _opType");
3928 const Form *form = globals[_opType];
3929 const Form *form2 = globals[mNode2->_opType];
3930 if( form != form2 ) {
3931 return false;
3932 }
3933
3934 // Check that their children also match
3935 if (_lChild ) {
3936 if( !_lChild->equivalent(globals, mNode2->_lChild) )
3937 return false;
3938 } else if (mNode2->_lChild) {
3939 return false; // I have null left child, mNode2 has non-null left child.
3940 }
3941
3942 if (_rChild ) {
3943 if( !_rChild->equivalent(globals, mNode2->_rChild) )
3944 return false;
3945 } else if (mNode2->_rChild) {
3946 return false; // I have null right child, mNode2 has non-null right child.
3947 }
3948
3949 // We've made it through the gauntlet.
3950 return true;
3951 }
3952
3953 //-------------------------- count_commutative_op -------------------------------
3954 // Recursively check for commutative operations with subtree operands
3955 // which could be swapped.
3956 void MatchNode::count_commutative_op(int& count) {
3957 static const char *commut_op_list[] = {
3958 "AddI","AddL","AddHF","AddF","AddD",
3959 "AndI","AndL",
3960 "MaxI","MinI","MaxHF","MinHF","MaxF","MinF","MaxD","MinD",
3961 "MulI","MulL","MulHF","MulF","MulD",
3962 "OrI","OrL",
3963 "XorI","XorL"
3964 "UMax","UMin"
3965 };
3966
3967 static const char *commut_vector_op_list[] = {
3968 "AddVB", "AddVS", "AddVI", "AddVL", "AddVF", "AddVD",
3969 "MulVB", "MulVS", "MulVI", "MulVL", "MulVF", "MulVD",
3970 "AndV", "OrV", "XorV",
3971 "MaxV", "MinV", "UMax","UMin"
3972 };
3973
3974 if (_lChild && _rChild && (_lChild->_lChild || _rChild->_lChild)) {
3975 // Don't swap if right operand is an immediate constant.
3976 bool is_const = false;
3977 if (_rChild->_lChild == nullptr && _rChild->_rChild == nullptr) {
3978 FormDict &globals = _AD.globalNames();
3979 const Form *form = globals[_rChild->_opType];
3980 if (form) {
3981 OperandForm *oper = form->is_operand();
3982 if (oper && oper->interface_type(globals) == Form::constant_interface)
3983 is_const = true;
3984 }
3985 }
3986
3987 if (!is_const) {
3988 int scalar_cnt = sizeof(commut_op_list)/sizeof(char*);
3989 int vector_cnt = sizeof(commut_vector_op_list)/sizeof(char*);
3990 bool matched = false;
3991
3992 // Check the commutative vector op first. It's noncommutative if
3993 // the current node is a masked vector op, since a mask value
3994 // is added to the original vector node's input list and the original
3995 // first two inputs are packed into one BinaryNode. So don't swap
3996 // if one of the operands is a BinaryNode.
3997 for (int i = 0; i < vector_cnt; i++) {
3998 if (strcmp(_opType, commut_vector_op_list[i]) == 0) {
3999 if (strcmp(_lChild->_opType, "Binary") != 0 &&
4000 strcmp(_rChild->_opType, "Binary") != 0) {
4001 count++;
4002 _commutative_id = count; // id should be > 0
4003 }
4004 matched = true;
4005 break;
4006 }
4007 }
4008
4009 // Then check the scalar op if the current op is not in
4010 // the commut_vector_op_list.
4011 if (!matched) {
4012 for (int i = 0; i < scalar_cnt; i++) {
4013 if (strcmp(_opType, commut_op_list[i]) == 0) {
4014 count++;
4015 _commutative_id = count; // id should be > 0
4016 break;
4017 }
4018 }
4019 }
4020 }
4021 }
4022 if (_lChild)
4023 _lChild->count_commutative_op(count);
4024 if (_rChild)
4025 _rChild->count_commutative_op(count);
4026 }
4027
4028 //-------------------------- swap_commutative_op ------------------------------
4029 // Recursively swap specified commutative operation with subtree operands.
4030 void MatchNode::swap_commutative_op(bool atroot, int id) {
4031 if( _commutative_id == id ) { // id should be > 0
4032 assert(_lChild && _rChild && (_lChild->_lChild || _rChild->_lChild ),
4033 "not swappable operation");
4034 MatchNode* tmp = _lChild;
4035 _lChild = _rChild;
4036 _rChild = tmp;
4037 // Don't exit here since we need to build internalop.
4038 }
4039
4040 bool is_set = ( strcmp(_opType, "Set") == 0 );
4041 if( _lChild )
4042 _lChild->swap_commutative_op(is_set, id);
4043 if( _rChild )
4044 _rChild->swap_commutative_op(is_set, id);
4045
4046 // If not the root, reduce this subtree to an internal operand
4047 if( !atroot && (_lChild || _rChild) ) {
4048 build_internalop();
4049 }
4050 }
4051
4052 //-------------------------- swap_commutative_op ------------------------------
4053 // Recursively swap specified commutative operation with subtree operands.
4054 void MatchRule::matchrule_swap_commutative_op(const char* instr_ident, int count, int& match_rules_cnt) {
4055 assert(match_rules_cnt < 100," too many match rule clones");
4056 // Clone
4057 MatchRule* clone = new MatchRule(_AD, this);
4058 // Swap operands of commutative operation
4059 ((MatchNode*)clone)->swap_commutative_op(true, count);
4060 const size_t buf_size = strlen(instr_ident) + 4;
4061 char* buf = (char*) AdlAllocateHeap(buf_size);
4062 snprintf_checked(buf, buf_size, "%s_%d", instr_ident, match_rules_cnt++);
4063 clone->_result = buf;
4064
4065 clone->_next = this->_next;
4066 this-> _next = clone;
4067 if( (--count) > 0 ) {
4068 this-> matchrule_swap_commutative_op(instr_ident, count, match_rules_cnt);
4069 clone->matchrule_swap_commutative_op(instr_ident, count, match_rules_cnt);
4070 }
4071 }
4072
4073 //------------------------------MatchRule--------------------------------------
4074 MatchRule::MatchRule(ArchDesc &ad)
4075 : MatchNode(ad), _depth(0), _construct(nullptr), _numchilds(0) {
4076 _next = nullptr;
4077 }
4078
4079 MatchRule::MatchRule(ArchDesc &ad, MatchRule* mRule)
4080 : MatchNode(ad, *mRule, 0), _depth(mRule->_depth),
4081 _construct(mRule->_construct), _numchilds(mRule->_numchilds) {
4082 _next = nullptr;
4083 }
4084
4085 MatchRule::MatchRule(ArchDesc &ad, MatchNode* mroot, int depth, char *cnstr,
4086 int numleaves)
4087 : MatchNode(ad,*mroot), _depth(depth), _construct(cnstr),
4088 _numchilds(0) {
4089 _next = nullptr;
4090 mroot->_lChild = nullptr;
4091 mroot->_rChild = nullptr;
4092 delete mroot;
4093 _numleaves = numleaves;
4094 _numchilds = (_lChild ? 1 : 0) + (_rChild ? 1 : 0);
4095 }
4096 MatchRule::~MatchRule() {
4097 }
4098
4099 // Recursive call collecting info on top-level operands, not transitive.
4100 // Implementation does not modify state of internal structures.
4101 void MatchRule::append_components(FormDict& locals, ComponentList& components, bool def_flag) const {
4102 assert (_name != nullptr, "MatchNode::build_components encountered empty node\n");
4103
4104 MatchNode::append_components(locals, components,
4105 false /* not necessarily a def */);
4106 }
4107
4108 // Recursive call on all operands' match rules in my match rule.
4109 // Implementation does not modify state of internal structures since they
4110 // can be shared.
4111 // The MatchNode that is called first treats its
4112 bool MatchRule::base_operand(uint &position0, FormDict &globals,
4113 const char *&result, const char * &name,
4114 const char * &opType)const{
4115 uint position = position0;
4116
4117 return (MatchNode::base_operand( position, globals, result, name, opType));
4118 }
4119
4120
4121 bool MatchRule::is_base_register(FormDict &globals) const {
4122 uint position = 1;
4123 const char *result = nullptr;
4124 const char *name = nullptr;
4125 const char *opType = nullptr;
4126 if (!base_operand(position, globals, result, name, opType)) {
4127 position = 0;
4128 if( base_operand(position, globals, result, name, opType) &&
4129 (strcmp(opType,"RegI")==0 ||
4130 strcmp(opType,"RegP")==0 ||
4131 strcmp(opType,"RegN")==0 ||
4132 strcmp(opType,"RegL")==0 ||
4133 strcmp(opType,"RegF")==0 ||
4134 strcmp(opType,"RegD")==0 ||
4135 strcmp(opType,"RegVectMask")==0 ||
4136 strcmp(opType,"VecA")==0 ||
4137 strcmp(opType,"VecS")==0 ||
4138 strcmp(opType,"VecD")==0 ||
4139 strcmp(opType,"VecX")==0 ||
4140 strcmp(opType,"VecY")==0 ||
4141 strcmp(opType,"VecZ")==0 ||
4142 strcmp(opType,"Reg" )==0) ) {
4143 return 1;
4144 }
4145 }
4146 return 0;
4147 }
4148
4149 Form::DataType MatchRule::is_base_constant(FormDict &globals) const {
4150 uint position = 1;
4151 const char *result = nullptr;
4152 const char *name = nullptr;
4153 const char *opType = nullptr;
4154 if (!base_operand(position, globals, result, name, opType)) {
4155 position = 0;
4156 if (base_operand(position, globals, result, name, opType)) {
4157 return ideal_to_const_type(opType);
4158 }
4159 }
4160 return Form::none;
4161 }
4162
4163 bool MatchRule::is_chain_rule(FormDict &globals) const {
4164
4165 // Check for chain rule, and do not generate a match list for it
4166 if ((_lChild == nullptr) && (_rChild == nullptr) ) {
4167 const Form *form = globals[_opType];
4168 // If this is ideal, then it is a base match, not a chain rule.
4169 if ( form && form->is_operand() && (!form->ideal_only())) {
4170 return true;
4171 }
4172 }
4173 // Check for "Set" form of chain rule, and do not generate a match list
4174 if (_rChild) {
4175 const char *rch = _rChild->_opType;
4176 const Form *form = globals[rch];
4177 if ((!strcmp(_opType,"Set") &&
4178 ((form) && form->is_operand()))) {
4179 return true;
4180 }
4181 }
4182 return false;
4183 }
4184
4185 int MatchRule::is_ideal_copy() const {
4186 if (is_chain_rule(_AD.globalNames()) &&
4187 _lChild && strncmp(_lChild->_opType, "stackSlot", 9) == 0) {
4188 return 1;
4189 }
4190 return 0;
4191 }
4192
4193 int MatchRule::is_expensive() const {
4194 if( _rChild ) {
4195 const char *opType = _rChild->_opType;
4196 if( strcmp(opType,"AtanD")==0 ||
4197 strcmp(opType,"DivD")==0 ||
4198 strcmp(opType,"DivF")==0 ||
4199 strcmp(opType,"DivHF")==0 ||
4200 strcmp(opType,"DivI")==0 ||
4201 strcmp(opType,"Log10D")==0 ||
4202 strcmp(opType,"ModD")==0 ||
4203 strcmp(opType,"ModF")==0 ||
4204 strcmp(opType,"ModI")==0 ||
4205 strcmp(opType,"SqrtD")==0 ||
4206 strcmp(opType,"SqrtF")==0 ||
4207 strcmp(opType,"SqrtHF")==0 ||
4208 strcmp(opType,"TanD")==0 ||
4209 strcmp(opType,"ConvD2F")==0 ||
4210 strcmp(opType,"ConvD2I")==0 ||
4211 strcmp(opType,"ConvD2L")==0 ||
4212 strcmp(opType,"ConvF2D")==0 ||
4213 strcmp(opType,"ConvF2I")==0 ||
4214 strcmp(opType,"ConvF2L")==0 ||
4215 strcmp(opType,"ConvI2D")==0 ||
4216 strcmp(opType,"ConvI2F")==0 ||
4217 strcmp(opType,"ConvI2L")==0 ||
4218 strcmp(opType,"ConvL2D")==0 ||
4219 strcmp(opType,"ConvL2F")==0 ||
4220 strcmp(opType,"ConvL2I")==0 ||
4221 strcmp(opType,"DecodeN")==0 ||
4222 strcmp(opType,"EncodeP")==0 ||
4223 strcmp(opType,"EncodePKlass")==0 ||
4224 strcmp(opType,"DecodeNKlass")==0 ||
4225 strcmp(opType,"FmaD") == 0 ||
4226 strcmp(opType,"FmaF") == 0 ||
4227 strcmp(opType,"FmaHF") == 0 ||
4228 strcmp(opType,"RoundDouble")==0 ||
4229 strcmp(opType,"RoundDoubleMode")==0 ||
4230 strcmp(opType,"RoundFloat")==0 ||
4231 strcmp(opType,"ReverseBytesI")==0 ||
4232 strcmp(opType,"ReverseBytesL")==0 ||
4233 strcmp(opType,"ReverseBytesUS")==0 ||
4234 strcmp(opType,"ReverseBytesS")==0 ||
4235 strcmp(opType,"PopulateIndex")==0 ||
4236 strcmp(opType,"AddReductionVI")==0 ||
4237 strcmp(opType,"AddReductionVL")==0 ||
4238 strcmp(opType,"AddReductionVF")==0 ||
4239 strcmp(opType,"AddReductionVD")==0 ||
4240 strcmp(opType,"MulReductionVI")==0 ||
4241 strcmp(opType,"MulReductionVL")==0 ||
4242 strcmp(opType,"MulReductionVF")==0 ||
4243 strcmp(opType,"MulReductionVD")==0 ||
4244 strcmp(opType,"MinReductionV")==0 ||
4245 strcmp(opType,"MaxReductionV")==0 ||
4246 strcmp(opType,"AndReductionV")==0 ||
4247 strcmp(opType,"OrReductionV")==0 ||
4248 strcmp(opType,"XorReductionV")==0 ||
4249 strcmp(opType,"MaskAll")==0 ||
4250 0 /* 0 to line up columns nicely */ ) {
4251 return 1;
4252 }
4253 }
4254 return 0;
4255 }
4256
4257 bool MatchRule::is_ideal_if() const {
4258 if( !_opType ) return false;
4259 return
4260 !strcmp(_opType,"If" ) ||
4261 !strcmp(_opType,"CountedLoopEnd");
4262 }
4263
4264 bool MatchRule::is_ideal_fastlock() const {
4265 if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) {
4266 return (strcmp(_rChild->_opType,"FastLock") == 0);
4267 }
4268 return false;
4269 }
4270
4271 bool MatchRule::is_ideal_membar() const {
4272 if( !_opType ) return false;
4273 return
4274 !strcmp(_opType,"MemBarAcquire") ||
4275 !strcmp(_opType,"MemBarRelease") ||
4276 !strcmp(_opType,"MemBarAcquireLock") ||
4277 !strcmp(_opType,"MemBarReleaseLock") ||
4278 !strcmp(_opType,"LoadFence" ) ||
4279 !strcmp(_opType,"StoreFence") ||
4280 !strcmp(_opType,"StoreStoreFence") ||
4281 !strcmp(_opType,"MemBarVolatile") ||
4282 !strcmp(_opType,"MemBarCPUOrder") ||
4283 !strcmp(_opType,"MemBarStoreStore") ||
4284 !strcmp(_opType,"OnSpinWait");
4285 }
4286
4287 bool MatchRule::is_ideal_loadPC() const {
4288 if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) {
4289 return (strcmp(_rChild->_opType,"LoadPC") == 0);
4290 }
4291 return false;
4292 }
4293
4294 bool MatchRule::is_ideal_box() const {
4295 if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) {
4296 return (strcmp(_rChild->_opType,"Box") == 0);
4297 }
4298 return false;
4299 }
4300
4301 bool MatchRule::is_ideal_goto() const {
4302 bool ideal_goto = false;
4303
4304 if( _opType && (strcmp(_opType,"Goto") == 0) ) {
4305 ideal_goto = true;
4306 }
4307 return ideal_goto;
4308 }
4309
4310 bool MatchRule::is_ideal_jump() const {
4311 if( _opType ) {
4312 if( !strcmp(_opType,"Jump") )
4313 return true;
4314 }
4315 return false;
4316 }
4317
4318 bool MatchRule::is_ideal_bool() const {
4319 if( _opType ) {
4320 if( !strcmp(_opType,"Bool") )
4321 return true;
4322 }
4323 return false;
4324 }
4325
4326
4327 Form::DataType MatchRule::is_ideal_load() const {
4328 Form::DataType ideal_load = Form::none;
4329
4330 if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) {
4331 const char *opType = _rChild->_opType;
4332 ideal_load = is_load_from_memory(opType);
4333 }
4334
4335 return ideal_load;
4336 }
4337
4338 bool MatchRule::is_vector() const {
4339 static const char *vector_list[] = {
4340 "AddVB","AddVS","AddVI","AddVL","AddVF","AddVD",
4341 "SubVB","SubVS","SubVI","SubVL","SubVF","SubVD",
4342 "MulVB","MulVS","MulVI","MulVL","MulVF","MulVD",
4343 "DivVF","DivVD",
4344 "AbsVB","AbsVS","AbsVI","AbsVL","AbsVF","AbsVD",
4345 "NegVF","NegVD","NegVI","NegVL",
4346 "SqrtVD","SqrtVF",
4347 "AndV" ,"XorV" ,"OrV",
4348 "MaxV", "MinV", "UMinV", "UMaxV",
4349 "CompressV", "ExpandV", "CompressM", "CompressBitsV", "ExpandBitsV",
4350 "AddReductionVI", "AddReductionVL",
4351 "AddReductionVF", "AddReductionVD",
4352 "MulReductionVI", "MulReductionVL",
4353 "MulReductionVF", "MulReductionVD",
4354 "MaxReductionV", "MinReductionV",
4355 "AndReductionV", "OrReductionV", "XorReductionV",
4356 "MulAddVS2VI", "MacroLogicV",
4357 "LShiftCntV","RShiftCntV",
4358 "LShiftVB","LShiftVS","LShiftVI","LShiftVL",
4359 "RShiftVB","RShiftVS","RShiftVI","RShiftVL",
4360 "URShiftVB","URShiftVS","URShiftVI","URShiftVL",
4361 "Replicate","ReverseV","ReverseBytesV",
4362 "RoundDoubleModeV","RotateLeftV" , "RotateRightV", "LoadVector","StoreVector",
4363 "LoadVectorGather", "StoreVectorScatter", "LoadVectorGatherMasked", "StoreVectorScatterMasked",
4364 "SelectFromTwoVector", "VectorTest", "VectorLoadMask", "VectorStoreMask", "VectorBlend", "VectorInsert",
4365 "VectorRearrange", "VectorLoadShuffle", "VectorLoadConst",
4366 "VectorCastB2X", "VectorCastS2X", "VectorCastI2X",
4367 "VectorCastL2X", "VectorCastF2X", "VectorCastD2X", "VectorCastF2HF", "VectorCastHF2F",
4368 "VectorUCastB2X", "VectorUCastS2X", "VectorUCastI2X",
4369 "VectorMaskWrapper","VectorMaskCmp","VectorReinterpret","LoadVectorMasked","StoreVectorMasked",
4370 "FmaVD","FmaVF","PopCountVI","PopCountVL","PopulateIndex","VectorLongToMask",
4371 "CountLeadingZerosV", "CountTrailingZerosV", "SignumVF", "SignumVD", "SaturatingAddV", "SaturatingSubV",
4372 // Next are vector mask ops.
4373 "MaskAll", "AndVMask", "OrVMask", "XorVMask", "VectorMaskCast",
4374 "RoundVF", "RoundVD",
4375 // Next are not supported currently.
4376 "PackB","PackS","PackI","PackL","PackF","PackD","Pack2L","Pack2D",
4377 "ExtractB","ExtractUB","ExtractC","ExtractS","ExtractI","ExtractL","ExtractF","ExtractD"
4378 };
4379 int cnt = sizeof(vector_list)/sizeof(char*);
4380 if (_rChild) {
4381 const char *opType = _rChild->_opType;
4382 for (int i=0; i<cnt; i++)
4383 if (strcmp(opType,vector_list[i]) == 0)
4384 return true;
4385 }
4386 return false;
4387 }
4388
4389
4390 bool MatchRule::skip_antidep_check() const {
4391 // Some loads operate on what is effectively immutable memory so we
4392 // should skip the anti dep computations. For some of these nodes
4393 // the rewritable field keeps the anti dep logic from triggering but
4394 // for certain kinds of LoadKlass it does not since they are
4395 // actually reading memory which could be rewritten by the runtime,
4396 // though never by generated code. This disables it uniformly for
4397 // the nodes that behave like this: LoadKlass, LoadNKlass and
4398 // LoadRange.
4399 if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) {
4400 const char *opType = _rChild->_opType;
4401 if (strcmp("LoadKlass", opType) == 0 ||
4402 strcmp("LoadNKlass", opType) == 0 ||
4403 strcmp("LoadRange", opType) == 0) {
4404 return true;
4405 }
4406 }
4407
4408 return false;
4409 }
4410
4411
4412 Form::DataType MatchRule::is_ideal_store() const {
4413 Form::DataType ideal_store = Form::none;
4414
4415 if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) {
4416 const char *opType = _rChild->_opType;
4417 ideal_store = is_store_to_memory(opType);
4418 }
4419
4420 return ideal_store;
4421 }
4422
4423
4424 void MatchRule::dump() {
4425 output(stderr);
4426 }
4427
4428 // Write just one line.
4429 void MatchRule::output_short(FILE *fp) {
4430 fprintf(fp,"MatchRule: ( %s",_name);
4431 if (_lChild) _lChild->output(fp);
4432 if (_rChild) _rChild->output(fp);
4433 fprintf(fp," )");
4434 }
4435
4436 void MatchRule::output(FILE *fp) {
4437 output_short(fp);
4438 fprintf(fp,"\n nesting depth = %d\n", _depth);
4439 if (_result) fprintf(fp," Result Type = %s", _result);
4440 fprintf(fp,"\n");
4441 }
4442
4443 void MatchRule::forms_do(FormClosure* f) {
4444 // keep sync with MatchNode::forms_do
4445 f->do_form_by_name(_name);
4446 if (_lChild) f->do_form(_lChild);
4447 if (_rChild) f->do_form(_rChild);
4448
4449 // handle next rule
4450 if (_next) {
4451 f->do_form(_next);
4452 }
4453 }
4454
4455 //------------------------------Attribute--------------------------------------
4456 Attribute::Attribute(char *id, char* val, int type)
4457 : _ident(id), _val(val), _atype(type) {
4458 }
4459 Attribute::~Attribute() {
4460 }
4461
4462 int Attribute::int_val(ArchDesc &ad) {
4463 // Make sure it is an integer constant:
4464 int result = 0;
4465 if (!_val || !ADLParser::is_int_token(_val, result)) {
4466 ad.syntax_err(0, "Attribute %s must have an integer value: %s",
4467 _ident, _val ? _val : "");
4468 }
4469 return result;
4470 }
4471
4472 void Attribute::dump() {
4473 output(stderr);
4474 } // Debug printer
4475
4476 // Write to output files
4477 void Attribute::output(FILE *fp) {
4478 fprintf(fp,"Attribute: %s %s\n", (_ident?_ident:""), (_val?_val:""));
4479 }
4480
4481 //------------------------------FormatRule----------------------------------
4482 FormatRule::FormatRule(char *temp)
4483 : _temp(temp) {
4484 }
4485 FormatRule::~FormatRule() {
4486 }
4487
4488 void FormatRule::dump() {
4489 output(stderr);
4490 }
4491
4492 // Write to output files
4493 void FormatRule::output(FILE *fp) {
4494 fprintf(fp,"\nFormat Rule: \n%s", (_temp?_temp:""));
4495 fprintf(fp,"\n");
4496 }