1 /*
  2  * Copyright (c) 1999, 2025, Oracle and/or its affiliates. All rights reserved.
  3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  4  *
  5  * This code is free software; you can redistribute it and/or modify it
  6  * under the terms of the GNU General Public License version 2 only, as
  7  * published by the Free Software Foundation.
  8  *
  9  * This code is distributed in the hope that it will be useful, but WITHOUT
 10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 12  * version 2 for more details (a copy is included in the LICENSE file that
 13  * accompanied this code).
 14  *
 15  * You should have received a copy of the GNU General Public License version
 16  * 2 along with this work; if not, write to the Free Software Foundation,
 17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 18  *
 19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 20  * or visit www.oracle.com if you need additional information or have any
 21  * questions.
 22  *
 23  */
 24 
 25 #include "classfile/vmClasses.hpp"
 26 #include "compiler/compilationMemoryStatistic.hpp"
 27 #include "compiler/compilerDefinitions.inline.hpp"
 28 #include "runtime/handles.inline.hpp"
 29 #include "jfr/support/jfrIntrinsics.hpp"
 30 #include "opto/c2compiler.hpp"
 31 #include "opto/compile.hpp"
 32 #include "opto/optoreg.hpp"
 33 #include "opto/output.hpp"
 34 #include "opto/runtime.hpp"
 35 #include "runtime/stubRoutines.hpp"
 36 #include "runtime/globals_extension.hpp"
 37 #include "utilities/macros.hpp"
 38 
 39 
 40 // register information defined by ADLC
 41 extern const char register_save_policy[];
 42 extern const int  register_save_type[];
 43 
 44 const char* C2Compiler::retry_no_subsuming_loads() {
 45   return "retry without subsuming loads";
 46 }
 47 const char* C2Compiler::retry_no_escape_analysis() {
 48   return "retry without escape analysis";
 49 }
 50 const char* C2Compiler::retry_no_locks_coarsening() {
 51   return "retry without locks coarsening";
 52 }
 53 const char* C2Compiler::retry_no_iterative_escape_analysis() {
 54   return "retry without iterative escape analysis";
 55 }
 56 const char* C2Compiler::retry_no_reduce_allocation_merges() {
 57   return "retry without reducing allocation merges";
 58 }
 59 const char* C2Compiler::retry_no_superword() {
 60   return "retry without SuperWord";
 61 }
 62 
 63 void compiler_stubs_init(bool in_compiler_thread);
 64 
 65 bool C2Compiler::init_c2_runtime() {
 66 
 67 #ifdef ASSERT
 68   if (!AlignVector && VerifyAlignVector) {
 69     warning("VerifyAlignVector disabled because AlignVector is not enabled.");
 70     FLAG_SET_CMDLINE(VerifyAlignVector, false);
 71   }
 72 #endif
 73 
 74   // Check assumptions used while running ADLC
 75   Compile::adlc_verification();
 76   assert(REG_COUNT <= ConcreteRegisterImpl::number_of_registers, "incompatible register counts");
 77 
 78   for (int i = 0; i < ConcreteRegisterImpl::number_of_registers ; i++ ) {
 79       OptoReg::vm2opto[i] = OptoReg::Bad;
 80   }
 81 
 82   for( OptoReg::Name i=OptoReg::Name(0); i<OptoReg::Name(REG_COUNT); i = OptoReg::add(i,1) ) {
 83     VMReg r = OptoReg::as_VMReg(i);
 84     if (r->is_valid()) {
 85       OptoReg::vm2opto[r->value()] = i;
 86     }
 87   }
 88 
 89   DEBUG_ONLY( Node::init_NodeProperty(); )
 90 
 91   compiler_stubs_init(true /* in_compiler_thread */); // generate compiler's intrinsics stubs
 92 
 93   Compile::pd_compiler2_init();
 94 
 95   CompilerThread* thread = CompilerThread::current();
 96 
 97   HandleMark handle_mark(thread);
 98   return OptoRuntime::generate(thread->env());
 99 }
100 
101 void C2Compiler::initialize() {
102   assert(!CompilerConfig::is_c1_or_interpreter_only_no_jvmci(), "C2 compiler is launched, it's not c1/interpreter only mode");
103   // The first compiler thread that gets here will initialize the
104   // small amount of global state (and runtime stubs) that C2 needs.
105 
106   // There is a race possible once at startup and then we're fine
107 
108   // Note that this is being called from a compiler thread not the
109   // main startup thread.
110   if (should_perform_init()) {
111     bool successful = C2Compiler::init_c2_runtime();
112     int new_state = (successful) ? initialized : failed;
113     set_state(new_state);
114   }
115 }
116 
117 void C2Compiler::compile_method(ciEnv* env, ciMethod* target, int entry_bci, bool install_code, DirectiveSet* directive) {
118   assert(is_initialized(), "Compiler thread must be initialized");
119 
120   CompilationMemoryStatisticMark cmsm(directive);
121 
122   bool subsume_loads = SubsumeLoads;
123   bool do_escape_analysis = DoEscapeAnalysis;
124   bool do_iterative_escape_analysis = DoEscapeAnalysis;
125   bool do_reduce_allocation_merges = ReduceAllocationMerges && EliminateAllocations;
126   // TODO 8328675 Re-enable
127   bool eliminate_boxing = false; // EliminateAutoBox;
128   bool do_locks_coarsening = EliminateLocks;
129   bool do_superword = UseSuperWord;
130 
131   while (!env->failing()) {
132     ResourceMark rm;
133     // Attempt to compile while subsuming loads into machine instructions.
134     Options options(subsume_loads,
135                     do_escape_analysis,
136                     do_iterative_escape_analysis,
137                     do_reduce_allocation_merges,
138                     eliminate_boxing,
139                     do_locks_coarsening,
140                     do_superword,
141                     install_code);
142     Compile C(env, target, entry_bci, options, directive);
143 
144     // Check result and retry if appropriate.
145     if (C.failure_reason() != nullptr) {
146       if (C.failure_reason_is(retry_no_subsuming_loads())) {
147         assert(subsume_loads, "must make progress");
148         subsume_loads = false;
149         env->report_failure(C.failure_reason());
150         continue;  // retry
151       }
152       if (C.failure_reason_is(retry_no_escape_analysis())) {
153         assert(do_escape_analysis, "must make progress");
154         do_escape_analysis = false;
155         env->report_failure(C.failure_reason());
156         continue;  // retry
157       }
158       if (C.failure_reason_is(retry_no_iterative_escape_analysis())) {
159         assert(do_iterative_escape_analysis, "must make progress");
160         do_iterative_escape_analysis = false;
161         env->report_failure(C.failure_reason());
162         continue;  // retry
163       }
164       if (C.failure_reason_is(retry_no_reduce_allocation_merges())) {
165         assert(do_reduce_allocation_merges, "must make progress");
166         do_reduce_allocation_merges = false;
167         env->report_failure(C.failure_reason());
168         continue;  // retry
169       }
170       if (C.failure_reason_is(retry_no_locks_coarsening())) {
171         assert(do_locks_coarsening, "must make progress");
172         do_locks_coarsening = false;
173         env->report_failure(C.failure_reason());
174         continue;  // retry
175       }
176       if (C.failure_reason_is(retry_no_superword())) {
177         assert(do_superword, "must make progress");
178         do_superword = false;
179         env->report_failure(C.failure_reason());
180         continue;  // retry
181       }
182       if (C.has_boxed_value()) {
183         // Recompile without boxing elimination regardless failure reason.
184         assert(eliminate_boxing, "must make progress");
185         eliminate_boxing = false;
186         env->report_failure(C.failure_reason());
187         continue;  // retry
188       }
189       // Pass any other failure reason up to the ciEnv.
190       // Note that serious, irreversible failures are already logged
191       // on the ciEnv via env->record_method_not_compilable().
192       env->record_failure(C.failure_reason());
193     }
194     if (StressRecompilation) {
195       if (subsume_loads) {
196         subsume_loads = false;
197         continue;  // retry
198       }
199       if (do_escape_analysis) {
200         do_escape_analysis = false;
201         continue;  // retry
202       }
203       if (do_locks_coarsening) {
204         do_locks_coarsening = false;
205         continue;  // retry
206       }
207     }
208     // print inlining for last compilation only
209     C.dump_print_inlining();
210 
211     // No retry; just break the loop.
212     break;
213   }
214 }
215 
216 void C2Compiler::print_timers() {
217   Compile::print_timers();
218 }
219 
220 bool C2Compiler::is_intrinsic_supported(const methodHandle& method) {
221   vmIntrinsics::ID id = method->intrinsic_id();
222   return C2Compiler::is_intrinsic_supported(id);
223 }
224 
225 bool C2Compiler::is_intrinsic_supported(vmIntrinsics::ID id) {
226   assert(id != vmIntrinsics::_none, "must be a VM intrinsic");
227 
228   if (id < vmIntrinsics::FIRST_ID || id > vmIntrinsics::LAST_COMPILER_INLINE) {
229     return false;
230   }
231 
232   switch (id) {
233   case vmIntrinsics::_compressStringC:
234   case vmIntrinsics::_compressStringB:
235     if (!Matcher::match_rule_supported(Op_StrCompressedCopy)) return false;
236     break;
237   case vmIntrinsics::_inflateStringC:
238   case vmIntrinsics::_inflateStringB:
239     if (!Matcher::match_rule_supported(Op_StrInflatedCopy)) return false;
240     break;
241   case vmIntrinsics::_compareToL:
242   case vmIntrinsics::_compareToU:
243   case vmIntrinsics::_compareToLU:
244   case vmIntrinsics::_compareToUL:
245     if (!Matcher::match_rule_supported(Op_StrComp)) return false;
246     break;
247   case vmIntrinsics::_equalsL:
248     if (!Matcher::match_rule_supported(Op_StrEquals)) return false;
249     break;
250   case vmIntrinsics::_vectorizedHashCode:
251     if (!Matcher::match_rule_supported(Op_VectorizedHashCode)) return false;
252     break;
253   case vmIntrinsics::_equalsB:
254   case vmIntrinsics::_equalsC:
255     if (!Matcher::match_rule_supported(Op_AryEq)) return false;
256     break;
257   case vmIntrinsics::_copyMemory:
258     if (StubRoutines::unsafe_arraycopy() == nullptr) return false;
259     break;
260   case vmIntrinsics::_setMemory:
261     if (StubRoutines::unsafe_setmemory() == nullptr) return false;
262     break;
263   case vmIntrinsics::_electronicCodeBook_encryptAESCrypt:
264     if (StubRoutines::electronicCodeBook_encryptAESCrypt() == nullptr) return false;
265     break;
266   case vmIntrinsics::_electronicCodeBook_decryptAESCrypt:
267     if (StubRoutines::electronicCodeBook_decryptAESCrypt() == nullptr) return false;
268     break;
269   case vmIntrinsics::_galoisCounterMode_AESCrypt:
270     if (StubRoutines::galoisCounterMode_AESCrypt() == nullptr) return false;
271     break;
272   case vmIntrinsics::_bigIntegerRightShiftWorker:
273     if (StubRoutines::bigIntegerRightShift() == nullptr) return false;
274     break;
275   case vmIntrinsics::_bigIntegerLeftShiftWorker:
276     if (StubRoutines::bigIntegerLeftShift() == nullptr) return false;
277     break;
278   case vmIntrinsics::_encodeAsciiArray:
279     if (!Matcher::match_rule_supported(Op_EncodeISOArray) || !Matcher::supports_encode_ascii_array) return false;
280     break;
281   case vmIntrinsics::_encodeISOArray:
282   case vmIntrinsics::_encodeByteISOArray:
283     if (!Matcher::match_rule_supported(Op_EncodeISOArray)) return false;
284     break;
285   case vmIntrinsics::_countPositives:
286     if (!Matcher::match_rule_supported(Op_CountPositives))  return false;
287     break;
288   case vmIntrinsics::_bitCount_i:
289     if (!Matcher::match_rule_supported(Op_PopCountI)) return false;
290     break;
291   case vmIntrinsics::_bitCount_l:
292     if (!Matcher::match_rule_supported(Op_PopCountL)) return false;
293     break;
294   case vmIntrinsics::_compress_i:
295   case vmIntrinsics::_compress_l:
296     if (!Matcher::match_rule_supported(Op_CompressBits)) return false;
297     break;
298   case vmIntrinsics::_expand_i:
299   case vmIntrinsics::_expand_l:
300     if (!Matcher::match_rule_supported(Op_ExpandBits)) return false;
301     break;
302   case vmIntrinsics::_numberOfLeadingZeros_i:
303     if (!Matcher::match_rule_supported(Op_CountLeadingZerosI)) return false;
304     break;
305   case vmIntrinsics::_numberOfLeadingZeros_l:
306     if (!Matcher::match_rule_supported(Op_CountLeadingZerosL)) return false;
307     break;
308   case vmIntrinsics::_numberOfTrailingZeros_i:
309     if (!Matcher::match_rule_supported(Op_CountTrailingZerosI)) return false;
310     break;
311   case vmIntrinsics::_numberOfTrailingZeros_l:
312     if (!Matcher::match_rule_supported(Op_CountTrailingZerosL)) return false;
313     break;
314   case vmIntrinsics::_reverse_i:
315     if (!Matcher::match_rule_supported(Op_ReverseI)) return false;
316     break;
317   case vmIntrinsics::_reverse_l:
318     if (!Matcher::match_rule_supported(Op_ReverseL)) return false;
319     break;
320   case vmIntrinsics::_reverseBytes_c:
321     if (!Matcher::match_rule_supported(Op_ReverseBytesUS)) return false;
322     break;
323   case vmIntrinsics::_reverseBytes_s:
324     if (!Matcher::match_rule_supported(Op_ReverseBytesS)) return false;
325     break;
326   case vmIntrinsics::_reverseBytes_i:
327     if (!Matcher::match_rule_supported(Op_ReverseBytesI)) return false;
328     break;
329   case vmIntrinsics::_reverseBytes_l:
330     if (!Matcher::match_rule_supported(Op_ReverseBytesL)) return false;
331     break;
332   case vmIntrinsics::_compareUnsigned_i:
333     if (!Matcher::match_rule_supported(Op_CmpU3)) return false;
334     break;
335   case vmIntrinsics::_compareUnsigned_l:
336     if (!Matcher::match_rule_supported(Op_CmpUL3)) return false;
337     break;
338   case vmIntrinsics::_divideUnsigned_i:
339     if (!Matcher::match_rule_supported(Op_UDivI)) return false;
340     break;
341   case vmIntrinsics::_remainderUnsigned_i:
342     if (!Matcher::match_rule_supported(Op_UModI)) return false;
343     break;
344   case vmIntrinsics::_divideUnsigned_l:
345     if (!Matcher::match_rule_supported(Op_UDivL)) return false;
346     break;
347   case vmIntrinsics::_remainderUnsigned_l:
348     if (!Matcher::match_rule_supported(Op_UModL)) return false;
349     break;
350   case vmIntrinsics::_float16ToFloat:
351     if (!Matcher::match_rule_supported(Op_ConvHF2F)) return false;
352     break;
353   case vmIntrinsics::_floatToFloat16:
354     if (!Matcher::match_rule_supported(Op_ConvF2HF)) return false;
355     break;
356   case vmIntrinsics::_sqrt_float16:
357     if (!Matcher::match_rule_supported(Op_SqrtHF)) return false;
358     break;
359   case vmIntrinsics::_fma_float16:
360     if (!Matcher::match_rule_supported(Op_FmaHF)) return false;
361     break;
362 
363   /* CompareAndSet, Object: */
364   case vmIntrinsics::_compareAndSetReference:
365 #ifdef _LP64
366     if ( UseCompressedOops && !Matcher::match_rule_supported(Op_CompareAndSwapN)) return false;
367     if (!UseCompressedOops && !Matcher::match_rule_supported(Op_CompareAndSwapP)) return false;
368 #else
369     if (!Matcher::match_rule_supported(Op_CompareAndSwapP)) return false;
370 #endif
371     break;
372   case vmIntrinsics::_weakCompareAndSetReferencePlain:
373   case vmIntrinsics::_weakCompareAndSetReferenceAcquire:
374   case vmIntrinsics::_weakCompareAndSetReferenceRelease:
375   case vmIntrinsics::_weakCompareAndSetReference:
376 #ifdef _LP64
377     if ( UseCompressedOops && !Matcher::match_rule_supported(Op_WeakCompareAndSwapN)) return false;
378     if (!UseCompressedOops && !Matcher::match_rule_supported(Op_WeakCompareAndSwapP)) return false;
379 #else
380     if (!Matcher::match_rule_supported(Op_WeakCompareAndSwapP)) return false;
381 #endif
382     break;
383   /* CompareAndSet, Long: */
384   case vmIntrinsics::_compareAndSetLong:
385     if (!Matcher::match_rule_supported(Op_CompareAndSwapL)) return false;
386     break;
387   case vmIntrinsics::_weakCompareAndSetLongPlain:
388   case vmIntrinsics::_weakCompareAndSetLongAcquire:
389   case vmIntrinsics::_weakCompareAndSetLongRelease:
390   case vmIntrinsics::_weakCompareAndSetLong:
391     if (!Matcher::match_rule_supported(Op_WeakCompareAndSwapL)) return false;
392     break;
393 
394   /* CompareAndSet, Int: */
395   case vmIntrinsics::_compareAndSetInt:
396     if (!Matcher::match_rule_supported(Op_CompareAndSwapI)) return false;
397     break;
398   case vmIntrinsics::_weakCompareAndSetIntPlain:
399   case vmIntrinsics::_weakCompareAndSetIntAcquire:
400   case vmIntrinsics::_weakCompareAndSetIntRelease:
401   case vmIntrinsics::_weakCompareAndSetInt:
402     if (!Matcher::match_rule_supported(Op_WeakCompareAndSwapI)) return false;
403     break;
404 
405   /* CompareAndSet, Byte: */
406   case vmIntrinsics::_compareAndSetByte:
407     if (!Matcher::match_rule_supported(Op_CompareAndSwapB)) return false;
408     break;
409   case vmIntrinsics::_weakCompareAndSetBytePlain:
410   case vmIntrinsics::_weakCompareAndSetByteAcquire:
411   case vmIntrinsics::_weakCompareAndSetByteRelease:
412   case vmIntrinsics::_weakCompareAndSetByte:
413     if (!Matcher::match_rule_supported(Op_WeakCompareAndSwapB)) return false;
414     break;
415 
416   /* CompareAndSet, Short: */
417   case vmIntrinsics::_compareAndSetShort:
418     if (!Matcher::match_rule_supported(Op_CompareAndSwapS)) return false;
419     break;
420   case vmIntrinsics::_weakCompareAndSetShortPlain:
421   case vmIntrinsics::_weakCompareAndSetShortAcquire:
422   case vmIntrinsics::_weakCompareAndSetShortRelease:
423   case vmIntrinsics::_weakCompareAndSetShort:
424     if (!Matcher::match_rule_supported(Op_WeakCompareAndSwapS)) return false;
425     break;
426 
427   /* CompareAndExchange, Object: */
428   case vmIntrinsics::_compareAndExchangeReference:
429   case vmIntrinsics::_compareAndExchangeReferenceAcquire:
430   case vmIntrinsics::_compareAndExchangeReferenceRelease:
431 #ifdef _LP64
432     if ( UseCompressedOops && !Matcher::match_rule_supported(Op_CompareAndExchangeN)) return false;
433     if (!UseCompressedOops && !Matcher::match_rule_supported(Op_CompareAndExchangeP)) return false;
434 #else
435     if (!Matcher::match_rule_supported(Op_CompareAndExchangeP)) return false;
436 #endif
437     break;
438 
439   /* CompareAndExchange, Long: */
440   case vmIntrinsics::_compareAndExchangeLong:
441   case vmIntrinsics::_compareAndExchangeLongAcquire:
442   case vmIntrinsics::_compareAndExchangeLongRelease:
443     if (!Matcher::match_rule_supported(Op_CompareAndExchangeL)) return false;
444     break;
445 
446   /* CompareAndExchange, Int: */
447   case vmIntrinsics::_compareAndExchangeInt:
448   case vmIntrinsics::_compareAndExchangeIntAcquire:
449   case vmIntrinsics::_compareAndExchangeIntRelease:
450     if (!Matcher::match_rule_supported(Op_CompareAndExchangeI)) return false;
451     break;
452 
453   /* CompareAndExchange, Byte: */
454   case vmIntrinsics::_compareAndExchangeByte:
455   case vmIntrinsics::_compareAndExchangeByteAcquire:
456   case vmIntrinsics::_compareAndExchangeByteRelease:
457     if (!Matcher::match_rule_supported(Op_CompareAndExchangeB)) return false;
458     break;
459 
460   /* CompareAndExchange, Short: */
461   case vmIntrinsics::_compareAndExchangeShort:
462   case vmIntrinsics::_compareAndExchangeShortAcquire:
463   case vmIntrinsics::_compareAndExchangeShortRelease:
464     if (!Matcher::match_rule_supported(Op_CompareAndExchangeS)) return false;
465     break;
466 
467   case vmIntrinsics::_getAndAddByte:
468     if (!Matcher::match_rule_supported(Op_GetAndAddB)) return false;
469     break;
470   case vmIntrinsics::_getAndAddShort:
471     if (!Matcher::match_rule_supported(Op_GetAndAddS)) return false;
472     break;
473   case vmIntrinsics::_getAndAddInt:
474     if (!Matcher::match_rule_supported(Op_GetAndAddI)) return false;
475     break;
476   case vmIntrinsics::_getAndAddLong:
477     if (!Matcher::match_rule_supported(Op_GetAndAddL)) return false;
478     break;
479 
480   case vmIntrinsics::_getAndSetByte:
481     if (!Matcher::match_rule_supported(Op_GetAndSetB)) return false;
482     break;
483   case vmIntrinsics::_getAndSetShort:
484     if (!Matcher::match_rule_supported(Op_GetAndSetS)) return false;
485     break;
486   case vmIntrinsics::_getAndSetInt:
487     if (!Matcher::match_rule_supported(Op_GetAndSetI)) return false;
488     break;
489   case vmIntrinsics::_getAndSetLong:
490     if (!Matcher::match_rule_supported(Op_GetAndSetL)) return false;
491     break;
492   case vmIntrinsics::_getAndSetReference:
493 #ifdef _LP64
494     if (!UseCompressedOops && !Matcher::match_rule_supported(Op_GetAndSetP)) return false;
495     if (UseCompressedOops && !Matcher::match_rule_supported(Op_GetAndSetN)) return false;
496     break;
497 #else
498     if (!Matcher::match_rule_supported(Op_GetAndSetP)) return false;
499     break;
500 #endif
501   case vmIntrinsics::_incrementExactI:
502   case vmIntrinsics::_addExactI:
503     if (!Matcher::match_rule_supported(Op_OverflowAddI)) return false;
504     break;
505   case vmIntrinsics::_incrementExactL:
506   case vmIntrinsics::_addExactL:
507     if (!Matcher::match_rule_supported(Op_OverflowAddL)) return false;
508     break;
509   case vmIntrinsics::_decrementExactI:
510   case vmIntrinsics::_subtractExactI:
511     if (!Matcher::match_rule_supported(Op_OverflowSubI)) return false;
512     break;
513   case vmIntrinsics::_decrementExactL:
514   case vmIntrinsics::_subtractExactL:
515     if (!Matcher::match_rule_supported(Op_OverflowSubL)) return false;
516     break;
517   case vmIntrinsics::_negateExactI:
518     if (!Matcher::match_rule_supported(Op_OverflowSubI)) return false;
519     break;
520   case vmIntrinsics::_negateExactL:
521     if (!Matcher::match_rule_supported(Op_OverflowSubL)) return false;
522     break;
523   case vmIntrinsics::_multiplyExactI:
524     if (!Matcher::match_rule_supported(Op_OverflowMulI)) return false;
525     break;
526   case vmIntrinsics::_multiplyExactL:
527     if (!Matcher::match_rule_supported(Op_OverflowMulL)) return false;
528     break;
529   case vmIntrinsics::_multiplyHigh:
530     if (!Matcher::match_rule_supported(Op_MulHiL)) return false;
531     break;
532   case vmIntrinsics::_unsignedMultiplyHigh:
533     if (!Matcher::match_rule_supported(Op_UMulHiL)) return false;
534     break;
535   case vmIntrinsics::_getCallerClass:
536     if (vmClasses::reflect_CallerSensitive_klass() == nullptr) return false;
537     break;
538   case vmIntrinsics::_onSpinWait:
539     if (!Matcher::match_rule_supported(Op_OnSpinWait)) return false;
540     break;
541   case vmIntrinsics::_fmaD:
542     if (!Matcher::match_rule_supported(Op_FmaD)) return false;
543     break;
544   case vmIntrinsics::_fmaF:
545     if (!Matcher::match_rule_supported(Op_FmaF)) return false;
546     break;
547   case vmIntrinsics::_isDigit:
548     if (!Matcher::match_rule_supported(Op_Digit)) return false;
549     break;
550   case vmIntrinsics::_isLowerCase:
551     if (!Matcher::match_rule_supported(Op_LowerCase)) return false;
552     break;
553   case vmIntrinsics::_isUpperCase:
554     if (!Matcher::match_rule_supported(Op_UpperCase)) return false;
555     break;
556   case vmIntrinsics::_isWhitespace:
557     if (!Matcher::match_rule_supported(Op_Whitespace)) return false;
558     break;
559   case vmIntrinsics::_maxF:
560   case vmIntrinsics::_maxF_strict:
561     if (!Matcher::match_rule_supported(Op_MaxF)) return false;
562     break;
563   case vmIntrinsics::_minF:
564   case vmIntrinsics::_minF_strict:
565     if (!Matcher::match_rule_supported(Op_MinF)) return false;
566     break;
567   case vmIntrinsics::_maxD:
568   case vmIntrinsics::_maxD_strict:
569     if (!Matcher::match_rule_supported(Op_MaxD)) return false;
570     break;
571   case vmIntrinsics::_minD:
572   case vmIntrinsics::_minD_strict:
573     if (!Matcher::match_rule_supported(Op_MinD)) return false;
574     break;
575   case vmIntrinsics::_writeback0:
576     if (!Matcher::match_rule_supported(Op_CacheWB)) return false;
577     break;
578   case vmIntrinsics::_writebackPreSync0:
579     if (!Matcher::match_rule_supported(Op_CacheWBPreSync)) return false;
580     break;
581   case vmIntrinsics::_writebackPostSync0:
582     if (!Matcher::match_rule_supported(Op_CacheWBPostSync)) return false;
583     break;
584   case vmIntrinsics::_rint:
585   case vmIntrinsics::_ceil:
586   case vmIntrinsics::_floor:
587     if (!Matcher::match_rule_supported(Op_RoundDoubleMode)) return false;
588     break;
589   case vmIntrinsics::_dcopySign:
590     if (!Matcher::match_rule_supported(Op_CopySignD)) return false;
591     break;
592   case vmIntrinsics::_fcopySign:
593     if (!Matcher::match_rule_supported(Op_CopySignF)) return false;
594     break;
595   case vmIntrinsics::_dsignum:
596     if (!Matcher::match_rule_supported(Op_SignumD)) return false;
597     break;
598   case vmIntrinsics::_fsignum:
599     if (!Matcher::match_rule_supported(Op_SignumF)) return false;
600     break;
601   case vmIntrinsics::_floatIsInfinite:
602     if (!Matcher::match_rule_supported(Op_IsInfiniteF)) return false;
603     break;
604   case vmIntrinsics::_floatIsFinite:
605     if (!Matcher::match_rule_supported(Op_IsFiniteF)) return false;
606     break;
607   case vmIntrinsics::_doubleIsInfinite:
608     if (!Matcher::match_rule_supported(Op_IsInfiniteD)) return false;
609     break;
610   case vmIntrinsics::_doubleIsFinite:
611     if (!Matcher::match_rule_supported(Op_IsFiniteD)) return false;
612     break;
613   case vmIntrinsics::_hashCode:
614   case vmIntrinsics::_identityHashCode:
615   case vmIntrinsics::_getClass:
616   case vmIntrinsics::_dsin:
617   case vmIntrinsics::_dcos:
618   case vmIntrinsics::_dtan:
619   case vmIntrinsics::_dtanh:
620   case vmIntrinsics::_dabs:
621   case vmIntrinsics::_fabs:
622   case vmIntrinsics::_iabs:
623   case vmIntrinsics::_labs:
624   case vmIntrinsics::_datan2:
625   case vmIntrinsics::_dsqrt:
626   case vmIntrinsics::_dsqrt_strict:
627   case vmIntrinsics::_dexp:
628   case vmIntrinsics::_dlog:
629   case vmIntrinsics::_dlog10:
630   case vmIntrinsics::_dpow:
631   case vmIntrinsics::_roundD:
632   case vmIntrinsics::_roundF:
633   case vmIntrinsics::_min:
634   case vmIntrinsics::_max:
635   case vmIntrinsics::_min_strict:
636   case vmIntrinsics::_max_strict:
637   case vmIntrinsics::_maxL:
638   case vmIntrinsics::_minL:
639   case vmIntrinsics::_arraycopy:
640   case vmIntrinsics::_arraySort:
641   case vmIntrinsics::_arrayPartition:
642   case vmIntrinsics::_indexOfL:
643   case vmIntrinsics::_indexOfU:
644   case vmIntrinsics::_indexOfUL:
645   case vmIntrinsics::_indexOfIL:
646   case vmIntrinsics::_indexOfIU:
647   case vmIntrinsics::_indexOfIUL:
648   case vmIntrinsics::_indexOfU_char:
649   case vmIntrinsics::_indexOfL_char:
650   case vmIntrinsics::_toBytesStringU:
651   case vmIntrinsics::_getCharsStringU:
652   case vmIntrinsics::_getCharStringU:
653   case vmIntrinsics::_putCharStringU:
654   case vmIntrinsics::_makePrivateBuffer:
655   case vmIntrinsics::_finishPrivateBuffer:
656   case vmIntrinsics::_getReference:
657   case vmIntrinsics::_getBoolean:
658   case vmIntrinsics::_getByte:
659   case vmIntrinsics::_getShort:
660   case vmIntrinsics::_getChar:
661   case vmIntrinsics::_getInt:
662   case vmIntrinsics::_getLong:
663   case vmIntrinsics::_getFloat:
664   case vmIntrinsics::_getDouble:
665   case vmIntrinsics::_getValue:
666   case vmIntrinsics::_putReference:
667   case vmIntrinsics::_putBoolean:
668   case vmIntrinsics::_putByte:
669   case vmIntrinsics::_putShort:
670   case vmIntrinsics::_putChar:
671   case vmIntrinsics::_putInt:
672   case vmIntrinsics::_putLong:
673   case vmIntrinsics::_putFloat:
674   case vmIntrinsics::_putDouble:
675   case vmIntrinsics::_putValue:
676   case vmIntrinsics::_getReferenceVolatile:
677   case vmIntrinsics::_getBooleanVolatile:
678   case vmIntrinsics::_getByteVolatile:
679   case vmIntrinsics::_getShortVolatile:
680   case vmIntrinsics::_getCharVolatile:
681   case vmIntrinsics::_getIntVolatile:
682   case vmIntrinsics::_getLongVolatile:
683   case vmIntrinsics::_getFloatVolatile:
684   case vmIntrinsics::_getDoubleVolatile:
685   case vmIntrinsics::_putReferenceVolatile:
686   case vmIntrinsics::_putBooleanVolatile:
687   case vmIntrinsics::_putByteVolatile:
688   case vmIntrinsics::_putShortVolatile:
689   case vmIntrinsics::_putCharVolatile:
690   case vmIntrinsics::_putIntVolatile:
691   case vmIntrinsics::_putLongVolatile:
692   case vmIntrinsics::_putFloatVolatile:
693   case vmIntrinsics::_putDoubleVolatile:
694   case vmIntrinsics::_getReferenceAcquire:
695   case vmIntrinsics::_getBooleanAcquire:
696   case vmIntrinsics::_getByteAcquire:
697   case vmIntrinsics::_getShortAcquire:
698   case vmIntrinsics::_getCharAcquire:
699   case vmIntrinsics::_getIntAcquire:
700   case vmIntrinsics::_getLongAcquire:
701   case vmIntrinsics::_getFloatAcquire:
702   case vmIntrinsics::_getDoubleAcquire:
703   case vmIntrinsics::_putReferenceRelease:
704   case vmIntrinsics::_putBooleanRelease:
705   case vmIntrinsics::_putByteRelease:
706   case vmIntrinsics::_putShortRelease:
707   case vmIntrinsics::_putCharRelease:
708   case vmIntrinsics::_putIntRelease:
709   case vmIntrinsics::_putLongRelease:
710   case vmIntrinsics::_putFloatRelease:
711   case vmIntrinsics::_putDoubleRelease:
712   case vmIntrinsics::_getReferenceOpaque:
713   case vmIntrinsics::_getBooleanOpaque:
714   case vmIntrinsics::_getByteOpaque:
715   case vmIntrinsics::_getShortOpaque:
716   case vmIntrinsics::_getCharOpaque:
717   case vmIntrinsics::_getIntOpaque:
718   case vmIntrinsics::_getLongOpaque:
719   case vmIntrinsics::_getFloatOpaque:
720   case vmIntrinsics::_getDoubleOpaque:
721   case vmIntrinsics::_putReferenceOpaque:
722   case vmIntrinsics::_putBooleanOpaque:
723   case vmIntrinsics::_putByteOpaque:
724   case vmIntrinsics::_putShortOpaque:
725   case vmIntrinsics::_putCharOpaque:
726   case vmIntrinsics::_putIntOpaque:
727   case vmIntrinsics::_putLongOpaque:
728   case vmIntrinsics::_putFloatOpaque:
729   case vmIntrinsics::_putDoubleOpaque:
730   case vmIntrinsics::_getShortUnaligned:
731   case vmIntrinsics::_getCharUnaligned:
732   case vmIntrinsics::_getIntUnaligned:
733   case vmIntrinsics::_getLongUnaligned:
734   case vmIntrinsics::_putShortUnaligned:
735   case vmIntrinsics::_putCharUnaligned:
736   case vmIntrinsics::_putIntUnaligned:
737   case vmIntrinsics::_putLongUnaligned:
738   case vmIntrinsics::_loadFence:
739   case vmIntrinsics::_storeFence:
740   case vmIntrinsics::_storeStoreFence:
741   case vmIntrinsics::_fullFence:
742   case vmIntrinsics::_currentCarrierThread:
743   case vmIntrinsics::_currentThread:
744   case vmIntrinsics::_setCurrentThread:
745   case vmIntrinsics::_scopedValueCache:
746   case vmIntrinsics::_setScopedValueCache:
747   case vmIntrinsics::_Continuation_pin:
748   case vmIntrinsics::_Continuation_unpin:
749 #ifdef JFR_HAVE_INTRINSICS
750   case vmIntrinsics::_counterTime:
751   case vmIntrinsics::_getEventWriter:
752   case vmIntrinsics::_jvm_commit:
753 #endif
754   case vmIntrinsics::_currentTimeMillis:
755   case vmIntrinsics::_nanoTime:
756   case vmIntrinsics::_allocateInstance:
757   case vmIntrinsics::_allocateUninitializedArray:
758   case vmIntrinsics::_isFlatArray:
759   case vmIntrinsics::_newArray:
760   case vmIntrinsics::_newNullRestrictedNonAtomicArray:
761   case vmIntrinsics::_newNullRestrictedAtomicArray:
762   case vmIntrinsics::_newNullableAtomicArray:
763   case vmIntrinsics::_getLength:
764   case vmIntrinsics::_copyOf:
765   case vmIntrinsics::_copyOfRange:
766   case vmIntrinsics::_clone:
767   case vmIntrinsics::_isAssignableFrom:
768   case vmIntrinsics::_isInstance:
769   case vmIntrinsics::_isHidden:
770   case vmIntrinsics::_getSuperclass:
771   case vmIntrinsics::_getClassAccessFlags:
772   case vmIntrinsics::_floatToRawIntBits:
773   case vmIntrinsics::_floatToIntBits:
774   case vmIntrinsics::_intBitsToFloat:
775   case vmIntrinsics::_doubleToRawLongBits:
776   case vmIntrinsics::_doubleToLongBits:
777   case vmIntrinsics::_longBitsToDouble:
778   case vmIntrinsics::_Reference_get:
779   case vmIntrinsics::_Reference_refersTo0:
780   case vmIntrinsics::_PhantomReference_refersTo0:
781   case vmIntrinsics::_Reference_clear0:
782   case vmIntrinsics::_PhantomReference_clear0:
783   case vmIntrinsics::_Class_cast:
784   case vmIntrinsics::_aescrypt_encryptBlock:
785   case vmIntrinsics::_aescrypt_decryptBlock:
786   case vmIntrinsics::_cipherBlockChaining_encryptAESCrypt:
787   case vmIntrinsics::_cipherBlockChaining_decryptAESCrypt:
788   case vmIntrinsics::_counterMode_AESCrypt:
789   case vmIntrinsics::_md5_implCompress:
790   case vmIntrinsics::_sha_implCompress:
791   case vmIntrinsics::_sha2_implCompress:
792   case vmIntrinsics::_sha5_implCompress:
793   case vmIntrinsics::_sha3_implCompress:
794   case vmIntrinsics::_double_keccak:
795   case vmIntrinsics::_digestBase_implCompressMB:
796   case vmIntrinsics::_multiplyToLen:
797   case vmIntrinsics::_squareToLen:
798   case vmIntrinsics::_mulAdd:
799   case vmIntrinsics::_montgomeryMultiply:
800   case vmIntrinsics::_montgomerySquare:
801   case vmIntrinsics::_vectorizedMismatch:
802   case vmIntrinsics::_ghash_processBlocks:
803   case vmIntrinsics::_chacha20Block:
804   case vmIntrinsics::_dilithiumAlmostNtt:
805   case vmIntrinsics::_dilithiumAlmostInverseNtt:
806   case vmIntrinsics::_dilithiumNttMult:
807   case vmIntrinsics::_dilithiumMontMulByConstant:
808   case vmIntrinsics::_dilithiumDecomposePoly:
809   case vmIntrinsics::_base64_encodeBlock:
810   case vmIntrinsics::_base64_decodeBlock:
811   case vmIntrinsics::_poly1305_processBlocks:
812   case vmIntrinsics::_intpoly_montgomeryMult_P256:
813   case vmIntrinsics::_intpoly_assign:
814   case vmIntrinsics::_updateCRC32:
815   case vmIntrinsics::_updateBytesCRC32:
816   case vmIntrinsics::_updateByteBufferCRC32:
817   case vmIntrinsics::_updateBytesCRC32C:
818   case vmIntrinsics::_updateDirectByteBufferCRC32C:
819   case vmIntrinsics::_updateBytesAdler32:
820   case vmIntrinsics::_updateByteBufferAdler32:
821   case vmIntrinsics::_profileBoolean:
822   case vmIntrinsics::_isCompileConstant:
823   case vmIntrinsics::_Preconditions_checkIndex:
824   case vmIntrinsics::_Preconditions_checkLongIndex:
825   case vmIntrinsics::_getObjectSize:
826     break;
827   case vmIntrinsics::_VectorCompressExpand:
828   case vmIntrinsics::_VectorUnaryOp:
829   case vmIntrinsics::_VectorBinaryOp:
830   case vmIntrinsics::_VectorTernaryOp:
831   case vmIntrinsics::_VectorFromBitsCoerced:
832   case vmIntrinsics::_VectorLoadOp:
833   case vmIntrinsics::_VectorLoadMaskedOp:
834   case vmIntrinsics::_VectorStoreOp:
835   case vmIntrinsics::_VectorStoreMaskedOp:
836   case vmIntrinsics::_VectorSelectFromTwoVectorOp:
837   case vmIntrinsics::_VectorGatherOp:
838   case vmIntrinsics::_VectorScatterOp:
839   case vmIntrinsics::_VectorReductionCoerced:
840   case vmIntrinsics::_VectorTest:
841   case vmIntrinsics::_VectorBlend:
842   case vmIntrinsics::_VectorRearrange:
843   case vmIntrinsics::_VectorSelectFrom:
844   case vmIntrinsics::_VectorCompare:
845   case vmIntrinsics::_VectorBroadcastInt:
846   case vmIntrinsics::_VectorConvert:
847   case vmIntrinsics::_VectorInsert:
848   case vmIntrinsics::_VectorExtract:
849   case vmIntrinsics::_VectorMaskOp:
850   case vmIntrinsics::_IndexVector:
851   case vmIntrinsics::_IndexPartiallyInUpperRange:
852     return EnableVectorSupport;
853   case vmIntrinsics::_blackhole:
854 #if INCLUDE_JVMTI
855   case vmIntrinsics::_notifyJvmtiVThreadStart:
856   case vmIntrinsics::_notifyJvmtiVThreadEnd:
857   case vmIntrinsics::_notifyJvmtiVThreadMount:
858   case vmIntrinsics::_notifyJvmtiVThreadUnmount:
859   case vmIntrinsics::_notifyJvmtiVThreadDisableSuspend:
860 #endif
861     break;
862 
863   default:
864     return false;
865   }
866   return true;
867 }
868 
869 int C2Compiler::initial_code_buffer_size(int const_size) {
870   // See Compile::init_scratch_buffer_blob
871   int locs_size = sizeof(relocInfo) * PhaseOutput::MAX_locs_size;
872   int slop = 2 * CodeSection::end_slop(); // space between sections
873   return PhaseOutput::MAX_inst_size + PhaseOutput::MAX_stubs_size + const_size + slop + locs_size;
874 }