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