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 "classfile/vmIntrinsics.hpp"
 27 #include "compiler/compilationMemoryStatistic.hpp"
 28 #include "compiler/compilerDefinitions.inline.hpp"
 29 #include "runtime/handles.inline.hpp"
 30 #include "jfr/support/jfrIntrinsics.hpp"
 31 #include "opto/c2compiler.hpp"
 32 #include "opto/compile.hpp"
 33 #include "opto/optoreg.hpp"
 34 #include "opto/output.hpp"
 35 #include "opto/runtime.hpp"
 36 #include "runtime/stubRoutines.hpp"
 37 #include "runtime/globals_extension.hpp"
 38 #include "utilities/macros.hpp"
 39 
 40 
 41 // register information defined by ADLC
 42 extern const char register_save_policy[];
 43 extern const int  register_save_type[];
 44 
 45 const char* C2Compiler::retry_no_subsuming_loads() {
 46   return "retry without subsuming loads";
 47 }
 48 const char* C2Compiler::retry_no_escape_analysis() {
 49   return "retry without escape analysis";
 50 }
 51 const char* C2Compiler::retry_no_locks_coarsening() {
 52   return "retry without locks coarsening";
 53 }
 54 const char* C2Compiler::retry_no_iterative_escape_analysis() {
 55   return "retry without iterative escape analysis";
 56 }
 57 const char* C2Compiler::retry_no_reduce_allocation_merges() {
 58   return "retry without reducing allocation merges";
 59 }
 60 const char* C2Compiler::retry_no_superword() {
 61   return "retry without SuperWord";
 62 }
 63 
 64 void compiler_stubs_init(bool in_compiler_thread);
 65 
 66 bool C2Compiler::init_c2_runtime() {
 67 
 68 #ifdef ASSERT
 69   if (!AlignVector && VerifyAlignVector) {
 70     warning("VerifyAlignVector disabled because AlignVector is not enabled.");
 71     FLAG_SET_CMDLINE(VerifyAlignVector, false);
 72   }
 73 #endif
 74 
 75   // Check assumptions used while running ADLC
 76   Compile::adlc_verification();
 77   assert(REG_COUNT <= ConcreteRegisterImpl::number_of_registers, "incompatible register counts");
 78 
 79   for (int i = 0; i < ConcreteRegisterImpl::number_of_registers ; i++ ) {
 80       OptoReg::vm2opto[i] = OptoReg::Bad;
 81   }
 82 
 83   for( OptoReg::Name i=OptoReg::Name(0); i<OptoReg::Name(REG_COUNT); i = OptoReg::add(i,1) ) {
 84     VMReg r = OptoReg::as_VMReg(i);
 85     if (r->is_valid()) {
 86       OptoReg::vm2opto[r->value()] = i;
 87     }
 88   }
 89 
 90   DEBUG_ONLY( Node::init_NodeProperty(); )
 91 
 92   compiler_stubs_init(true /* in_compiler_thread */); // generate compiler's intrinsics stubs
 93 
 94   Compile::pd_compiler2_init();
 95 
 96   CompilerThread* thread = CompilerThread::current();
 97 
 98   HandleMark handle_mark(thread);
 99   return OptoRuntime::generate(thread->env());
100 }
101 
102 void C2Compiler::initialize() {
103   assert(!CompilerConfig::is_c1_or_interpreter_only_no_jvmci(), "C2 compiler is launched, it's not c1/interpreter only mode");
104   // The first compiler thread that gets here will initialize the
105   // small amount of global state (and runtime stubs) that C2 needs.
106 
107   // There is a race possible once at startup and then we're fine
108 
109   // Note that this is being called from a compiler thread not the
110   // main startup thread.
111   if (should_perform_init()) {
112     bool successful = C2Compiler::init_c2_runtime();
113     int new_state = (successful) ? initialized : failed;
114     set_state(new_state);
115   }
116 }
117 
118 void C2Compiler::compile_method(ciEnv* env, ciMethod* target, int entry_bci, bool install_code, DirectiveSet* directive) {
119   assert(is_initialized(), "Compiler thread must be initialized");
120 
121   CompilationMemoryStatisticMark cmsm(directive);
122 
123   bool subsume_loads = SubsumeLoads;
124   bool do_escape_analysis = DoEscapeAnalysis;
125   bool do_iterative_escape_analysis = DoEscapeAnalysis;
126   bool do_reduce_allocation_merges = ReduceAllocationMerges && EliminateAllocations;
127   // TODO 8328675 Re-enable
128   bool eliminate_boxing = false; // EliminateAutoBox;
129   bool do_locks_coarsening = EliminateLocks;
130   bool do_superword = UseSuperWord;
131 
132   while (!env->failing()) {
133     ResourceMark rm;
134     // Attempt to compile while subsuming loads into machine instructions.
135     Options options(subsume_loads,
136                     do_escape_analysis,
137                     do_iterative_escape_analysis,
138                     do_reduce_allocation_merges,
139                     eliminate_boxing,
140                     do_locks_coarsening,
141                     do_superword,
142                     install_code);
143     Compile C(env, target, entry_bci, options, directive);
144 
145     // Check result and retry if appropriate.
146     if (C.failure_reason() != nullptr) {
147       if (C.failure_reason_is(retry_no_subsuming_loads())) {
148         assert(subsume_loads, "must make progress");
149         subsume_loads = false;
150         env->report_failure(C.failure_reason());
151         continue;  // retry
152       }
153       if (C.failure_reason_is(retry_no_escape_analysis())) {
154         assert(do_escape_analysis, "must make progress");
155         do_escape_analysis = false;
156         env->report_failure(C.failure_reason());
157         continue;  // retry
158       }
159       if (C.failure_reason_is(retry_no_iterative_escape_analysis())) {
160         assert(do_iterative_escape_analysis, "must make progress");
161         do_iterative_escape_analysis = false;
162         env->report_failure(C.failure_reason());
163         continue;  // retry
164       }
165       if (C.failure_reason_is(retry_no_reduce_allocation_merges())) {
166         assert(do_reduce_allocation_merges, "must make progress");
167         do_reduce_allocation_merges = false;
168         env->report_failure(C.failure_reason());
169         continue;  // retry
170       }
171       if (C.failure_reason_is(retry_no_locks_coarsening())) {
172         assert(do_locks_coarsening, "must make progress");
173         do_locks_coarsening = false;
174         env->report_failure(C.failure_reason());
175         continue;  // retry
176       }
177       if (C.failure_reason_is(retry_no_superword())) {
178         assert(do_superword, "must make progress");
179         do_superword = false;
180         env->report_failure(C.failure_reason());
181         continue;  // retry
182       }
183       if (C.has_boxed_value()) {
184         // Recompile without boxing elimination regardless failure reason.
185         assert(eliminate_boxing, "must make progress");
186         eliminate_boxing = false;
187         env->report_failure(C.failure_reason());
188         continue;  // retry
189       }
190       // Pass any other failure reason up to the ciEnv.
191       // Note that serious, irreversible failures are already logged
192       // on the ciEnv via env->record_method_not_compilable().
193       env->record_failure(C.failure_reason());
194     }
195     if (StressRecompilation) {
196       if (subsume_loads) {
197         subsume_loads = false;
198         continue;  // retry
199       }
200       if (do_escape_analysis) {
201         do_escape_analysis = false;
202         continue;  // retry
203       }
204       if (do_locks_coarsening) {
205         do_locks_coarsening = false;
206         continue;  // retry
207       }
208     }
209     // print inlining for last compilation only
210     C.dump_print_inlining();
211 
212     // No retry; just break the loop.
213     break;
214   }
215 }
216 
217 void C2Compiler::print_timers() {
218   Compile::print_timers();
219 }
220 
221 bool C2Compiler::is_intrinsic_supported(const methodHandle& method) {
222   vmIntrinsics::ID id = method->intrinsic_id();
223   return C2Compiler::is_intrinsic_supported(id);
224 }
225 
226 bool C2Compiler::is_intrinsic_supported(vmIntrinsics::ID id) {
227   assert(id != vmIntrinsics::_none, "must be a VM intrinsic");
228 
229   if (id < vmIntrinsics::FIRST_ID || id > vmIntrinsics::LAST_COMPILER_INLINE) {
230     return false;
231   }
232 
233   switch (id) {
234   case vmIntrinsics::_compressStringC:
235   case vmIntrinsics::_compressStringB:
236     if (!Matcher::match_rule_supported(Op_StrCompressedCopy)) return false;
237     break;
238   case vmIntrinsics::_inflateStringC:
239   case vmIntrinsics::_inflateStringB:
240     if (!Matcher::match_rule_supported(Op_StrInflatedCopy)) return false;
241     break;
242   case vmIntrinsics::_compareToL:
243   case vmIntrinsics::_compareToU:
244   case vmIntrinsics::_compareToLU:
245   case vmIntrinsics::_compareToUL:
246     if (!Matcher::match_rule_supported(Op_StrComp)) return false;
247     break;
248   case vmIntrinsics::_equalsL:
249     if (!Matcher::match_rule_supported(Op_StrEquals)) return false;
250     break;
251   case vmIntrinsics::_vectorizedHashCode:
252     if (!Matcher::match_rule_supported(Op_VectorizedHashCode)) return false;
253     break;
254   case vmIntrinsics::_equalsB:
255   case vmIntrinsics::_equalsC:
256     if (!Matcher::match_rule_supported(Op_AryEq)) return false;
257     break;
258   case vmIntrinsics::_copyMemory:
259     if (StubRoutines::unsafe_arraycopy() == nullptr) return false;
260     break;
261   case vmIntrinsics::_setMemory:
262     if (StubRoutines::unsafe_setmemory() == nullptr) return false;
263     break;
264   case vmIntrinsics::_electronicCodeBook_encryptAESCrypt:
265     if (StubRoutines::electronicCodeBook_encryptAESCrypt() == nullptr) return false;
266     break;
267   case vmIntrinsics::_electronicCodeBook_decryptAESCrypt:
268     if (StubRoutines::electronicCodeBook_decryptAESCrypt() == nullptr) return false;
269     break;
270   case vmIntrinsics::_galoisCounterMode_AESCrypt:
271     if (StubRoutines::galoisCounterMode_AESCrypt() == nullptr) return false;
272     break;
273   case vmIntrinsics::_bigIntegerRightShiftWorker:
274     if (StubRoutines::bigIntegerRightShift() == nullptr) return false;
275     break;
276   case vmIntrinsics::_bigIntegerLeftShiftWorker:
277     if (StubRoutines::bigIntegerLeftShift() == nullptr) return false;
278     break;
279   case vmIntrinsics::_encodeAsciiArray:
280     if (!Matcher::match_rule_supported(Op_EncodeISOArray) || !Matcher::supports_encode_ascii_array) return false;
281     break;
282   case vmIntrinsics::_encodeISOArray:
283   case vmIntrinsics::_encodeByteISOArray:
284     if (!Matcher::match_rule_supported(Op_EncodeISOArray)) return false;
285     break;
286   case vmIntrinsics::_countPositives:
287     if (!Matcher::match_rule_supported(Op_CountPositives))  return false;
288     break;
289   case vmIntrinsics::_bitCount_i:
290     if (!Matcher::match_rule_supported(Op_PopCountI)) return false;
291     break;
292   case vmIntrinsics::_bitCount_l:
293     if (!Matcher::match_rule_supported(Op_PopCountL)) return false;
294     break;
295   case vmIntrinsics::_compress_i:
296   case vmIntrinsics::_compress_l:
297     if (!Matcher::match_rule_supported(Op_CompressBits)) return false;
298     break;
299   case vmIntrinsics::_expand_i:
300   case vmIntrinsics::_expand_l:
301     if (!Matcher::match_rule_supported(Op_ExpandBits)) return false;
302     break;
303   case vmIntrinsics::_numberOfLeadingZeros_i:
304     if (!Matcher::match_rule_supported(Op_CountLeadingZerosI)) return false;
305     break;
306   case vmIntrinsics::_numberOfLeadingZeros_l:
307     if (!Matcher::match_rule_supported(Op_CountLeadingZerosL)) return false;
308     break;
309   case vmIntrinsics::_numberOfTrailingZeros_i:
310     if (!Matcher::match_rule_supported(Op_CountTrailingZerosI)) return false;
311     break;
312   case vmIntrinsics::_numberOfTrailingZeros_l:
313     if (!Matcher::match_rule_supported(Op_CountTrailingZerosL)) return false;
314     break;
315   case vmIntrinsics::_reverse_i:
316     if (!Matcher::match_rule_supported(Op_ReverseI)) return false;
317     break;
318   case vmIntrinsics::_reverse_l:
319     if (!Matcher::match_rule_supported(Op_ReverseL)) return false;
320     break;
321   case vmIntrinsics::_reverseBytes_c:
322     if (!Matcher::match_rule_supported(Op_ReverseBytesUS)) return false;
323     break;
324   case vmIntrinsics::_reverseBytes_s:
325     if (!Matcher::match_rule_supported(Op_ReverseBytesS)) return false;
326     break;
327   case vmIntrinsics::_reverseBytes_i:
328     if (!Matcher::match_rule_supported(Op_ReverseBytesI)) return false;
329     break;
330   case vmIntrinsics::_reverseBytes_l:
331     if (!Matcher::match_rule_supported(Op_ReverseBytesL)) return false;
332     break;
333   case vmIntrinsics::_compareUnsigned_i:
334     if (!Matcher::match_rule_supported(Op_CmpU3)) return false;
335     break;
336   case vmIntrinsics::_compareUnsigned_l:
337     if (!Matcher::match_rule_supported(Op_CmpUL3)) return false;
338     break;
339   case vmIntrinsics::_divideUnsigned_i:
340     if (!Matcher::match_rule_supported(Op_UDivI)) return false;
341     break;
342   case vmIntrinsics::_remainderUnsigned_i:
343     if (!Matcher::match_rule_supported(Op_UModI)) return false;
344     break;
345   case vmIntrinsics::_divideUnsigned_l:
346     if (!Matcher::match_rule_supported(Op_UDivL)) return false;
347     break;
348   case vmIntrinsics::_remainderUnsigned_l:
349     if (!Matcher::match_rule_supported(Op_UModL)) return false;
350     break;
351   case vmIntrinsics::_float16ToFloat:
352     if (!Matcher::match_rule_supported(Op_ConvHF2F)) return false;
353     break;
354   case vmIntrinsics::_floatToFloat16:
355     if (!Matcher::match_rule_supported(Op_ConvF2HF)) return false;
356     break;
357   case vmIntrinsics::_sqrt_float16:
358     if (!Matcher::match_rule_supported(Op_SqrtHF)) return false;
359     break;
360   case vmIntrinsics::_fma_float16:
361     if (!Matcher::match_rule_supported(Op_FmaHF)) return false;
362     break;
363 
364   /* CompareAndSet, Object: */
365   case vmIntrinsics::_compareAndSetReference:
366 #ifdef _LP64
367     if ( UseCompressedOops && !Matcher::match_rule_supported(Op_CompareAndSwapN)) return false;
368     if (!UseCompressedOops && !Matcher::match_rule_supported(Op_CompareAndSwapP)) return false;
369 #else
370     if (!Matcher::match_rule_supported(Op_CompareAndSwapP)) return false;
371 #endif
372     break;
373   case vmIntrinsics::_weakCompareAndSetReferencePlain:
374   case vmIntrinsics::_weakCompareAndSetReferenceAcquire:
375   case vmIntrinsics::_weakCompareAndSetReferenceRelease:
376   case vmIntrinsics::_weakCompareAndSetReference:
377 #ifdef _LP64
378     if ( UseCompressedOops && !Matcher::match_rule_supported(Op_WeakCompareAndSwapN)) return false;
379     if (!UseCompressedOops && !Matcher::match_rule_supported(Op_WeakCompareAndSwapP)) return false;
380 #else
381     if (!Matcher::match_rule_supported(Op_WeakCompareAndSwapP)) return false;
382 #endif
383     break;
384   /* CompareAndSet, Long: */
385   case vmIntrinsics::_compareAndSetLong:
386     if (!Matcher::match_rule_supported(Op_CompareAndSwapL)) return false;
387     break;
388   case vmIntrinsics::_weakCompareAndSetLongPlain:
389   case vmIntrinsics::_weakCompareAndSetLongAcquire:
390   case vmIntrinsics::_weakCompareAndSetLongRelease:
391   case vmIntrinsics::_weakCompareAndSetLong:
392     if (!Matcher::match_rule_supported(Op_WeakCompareAndSwapL)) return false;
393     break;
394 
395   /* CompareAndSet, Int: */
396   case vmIntrinsics::_compareAndSetInt:
397     if (!Matcher::match_rule_supported(Op_CompareAndSwapI)) return false;
398     break;
399   case vmIntrinsics::_weakCompareAndSetIntPlain:
400   case vmIntrinsics::_weakCompareAndSetIntAcquire:
401   case vmIntrinsics::_weakCompareAndSetIntRelease:
402   case vmIntrinsics::_weakCompareAndSetInt:
403     if (!Matcher::match_rule_supported(Op_WeakCompareAndSwapI)) return false;
404     break;
405 
406   /* CompareAndSet, Byte: */
407   case vmIntrinsics::_compareAndSetByte:
408     if (!Matcher::match_rule_supported(Op_CompareAndSwapB)) return false;
409     break;
410   case vmIntrinsics::_weakCompareAndSetBytePlain:
411   case vmIntrinsics::_weakCompareAndSetByteAcquire:
412   case vmIntrinsics::_weakCompareAndSetByteRelease:
413   case vmIntrinsics::_weakCompareAndSetByte:
414     if (!Matcher::match_rule_supported(Op_WeakCompareAndSwapB)) return false;
415     break;
416 
417   /* CompareAndSet, Short: */
418   case vmIntrinsics::_compareAndSetShort:
419     if (!Matcher::match_rule_supported(Op_CompareAndSwapS)) return false;
420     break;
421   case vmIntrinsics::_weakCompareAndSetShortPlain:
422   case vmIntrinsics::_weakCompareAndSetShortAcquire:
423   case vmIntrinsics::_weakCompareAndSetShortRelease:
424   case vmIntrinsics::_weakCompareAndSetShort:
425     if (!Matcher::match_rule_supported(Op_WeakCompareAndSwapS)) return false;
426     break;
427 
428   /* CompareAndExchange, Object: */
429   case vmIntrinsics::_compareAndExchangeReference:
430   case vmIntrinsics::_compareAndExchangeReferenceAcquire:
431   case vmIntrinsics::_compareAndExchangeReferenceRelease:
432 #ifdef _LP64
433     if ( UseCompressedOops && !Matcher::match_rule_supported(Op_CompareAndExchangeN)) return false;
434     if (!UseCompressedOops && !Matcher::match_rule_supported(Op_CompareAndExchangeP)) return false;
435 #else
436     if (!Matcher::match_rule_supported(Op_CompareAndExchangeP)) return false;
437 #endif
438     break;
439 
440   /* CompareAndExchange, Long: */
441   case vmIntrinsics::_compareAndExchangeLong:
442   case vmIntrinsics::_compareAndExchangeLongAcquire:
443   case vmIntrinsics::_compareAndExchangeLongRelease:
444     if (!Matcher::match_rule_supported(Op_CompareAndExchangeL)) return false;
445     break;
446 
447   /* CompareAndExchange, Int: */
448   case vmIntrinsics::_compareAndExchangeInt:
449   case vmIntrinsics::_compareAndExchangeIntAcquire:
450   case vmIntrinsics::_compareAndExchangeIntRelease:
451     if (!Matcher::match_rule_supported(Op_CompareAndExchangeI)) return false;
452     break;
453 
454   /* CompareAndExchange, Byte: */
455   case vmIntrinsics::_compareAndExchangeByte:
456   case vmIntrinsics::_compareAndExchangeByteAcquire:
457   case vmIntrinsics::_compareAndExchangeByteRelease:
458     if (!Matcher::match_rule_supported(Op_CompareAndExchangeB)) return false;
459     break;
460 
461   /* CompareAndExchange, Short: */
462   case vmIntrinsics::_compareAndExchangeShort:
463   case vmIntrinsics::_compareAndExchangeShortAcquire:
464   case vmIntrinsics::_compareAndExchangeShortRelease:
465     if (!Matcher::match_rule_supported(Op_CompareAndExchangeS)) return false;
466     break;
467 
468   case vmIntrinsics::_getAndAddByte:
469     if (!Matcher::match_rule_supported(Op_GetAndAddB)) return false;
470     break;
471   case vmIntrinsics::_getAndAddShort:
472     if (!Matcher::match_rule_supported(Op_GetAndAddS)) return false;
473     break;
474   case vmIntrinsics::_getAndAddInt:
475     if (!Matcher::match_rule_supported(Op_GetAndAddI)) return false;
476     break;
477   case vmIntrinsics::_getAndAddLong:
478     if (!Matcher::match_rule_supported(Op_GetAndAddL)) return false;
479     break;
480 
481   case vmIntrinsics::_getAndSetByte:
482     if (!Matcher::match_rule_supported(Op_GetAndSetB)) return false;
483     break;
484   case vmIntrinsics::_getAndSetShort:
485     if (!Matcher::match_rule_supported(Op_GetAndSetS)) return false;
486     break;
487   case vmIntrinsics::_getAndSetInt:
488     if (!Matcher::match_rule_supported(Op_GetAndSetI)) return false;
489     break;
490   case vmIntrinsics::_getAndSetLong:
491     if (!Matcher::match_rule_supported(Op_GetAndSetL)) return false;
492     break;
493   case vmIntrinsics::_getAndSetReference:
494 #ifdef _LP64
495     if (!UseCompressedOops && !Matcher::match_rule_supported(Op_GetAndSetP)) return false;
496     if (UseCompressedOops && !Matcher::match_rule_supported(Op_GetAndSetN)) return false;
497     break;
498 #else
499     if (!Matcher::match_rule_supported(Op_GetAndSetP)) return false;
500     break;
501 #endif
502   case vmIntrinsics::_incrementExactI:
503   case vmIntrinsics::_addExactI:
504     if (!Matcher::match_rule_supported(Op_OverflowAddI)) return false;
505     break;
506   case vmIntrinsics::_incrementExactL:
507   case vmIntrinsics::_addExactL:
508     if (!Matcher::match_rule_supported(Op_OverflowAddL)) return false;
509     break;
510   case vmIntrinsics::_decrementExactI:
511   case vmIntrinsics::_subtractExactI:
512     if (!Matcher::match_rule_supported(Op_OverflowSubI)) return false;
513     break;
514   case vmIntrinsics::_decrementExactL:
515   case vmIntrinsics::_subtractExactL:
516     if (!Matcher::match_rule_supported(Op_OverflowSubL)) return false;
517     break;
518   case vmIntrinsics::_negateExactI:
519     if (!Matcher::match_rule_supported(Op_OverflowSubI)) return false;
520     break;
521   case vmIntrinsics::_negateExactL:
522     if (!Matcher::match_rule_supported(Op_OverflowSubL)) return false;
523     break;
524   case vmIntrinsics::_multiplyExactI:
525     if (!Matcher::match_rule_supported(Op_OverflowMulI)) return false;
526     break;
527   case vmIntrinsics::_multiplyExactL:
528     if (!Matcher::match_rule_supported(Op_OverflowMulL)) return false;
529     break;
530   case vmIntrinsics::_multiplyHigh:
531     if (!Matcher::match_rule_supported(Op_MulHiL)) return false;
532     break;
533   case vmIntrinsics::_unsignedMultiplyHigh:
534     if (!Matcher::match_rule_supported(Op_UMulHiL)) return false;
535     break;
536   case vmIntrinsics::_getCallerClass:
537     if (vmClasses::reflect_CallerSensitive_klass() == nullptr) return false;
538     break;
539   case vmIntrinsics::_onSpinWait:
540     if (!Matcher::match_rule_supported(Op_OnSpinWait)) return false;
541     break;
542   case vmIntrinsics::_fmaD:
543     if (!Matcher::match_rule_supported(Op_FmaD)) return false;
544     break;
545   case vmIntrinsics::_fmaF:
546     if (!Matcher::match_rule_supported(Op_FmaF)) return false;
547     break;
548   case vmIntrinsics::_isDigit:
549     if (!Matcher::match_rule_supported(Op_Digit)) return false;
550     break;
551   case vmIntrinsics::_isLowerCase:
552     if (!Matcher::match_rule_supported(Op_LowerCase)) return false;
553     break;
554   case vmIntrinsics::_isUpperCase:
555     if (!Matcher::match_rule_supported(Op_UpperCase)) return false;
556     break;
557   case vmIntrinsics::_isWhitespace:
558     if (!Matcher::match_rule_supported(Op_Whitespace)) return false;
559     break;
560   case vmIntrinsics::_maxF:
561   case vmIntrinsics::_maxF_strict:
562     if (!Matcher::match_rule_supported(Op_MaxF)) return false;
563     break;
564   case vmIntrinsics::_minF:
565   case vmIntrinsics::_minF_strict:
566     if (!Matcher::match_rule_supported(Op_MinF)) return false;
567     break;
568   case vmIntrinsics::_maxD:
569   case vmIntrinsics::_maxD_strict:
570     if (!Matcher::match_rule_supported(Op_MaxD)) return false;
571     break;
572   case vmIntrinsics::_minD:
573   case vmIntrinsics::_minD_strict:
574     if (!Matcher::match_rule_supported(Op_MinD)) return false;
575     break;
576   case vmIntrinsics::_writeback0:
577     if (!Matcher::match_rule_supported(Op_CacheWB)) return false;
578     break;
579   case vmIntrinsics::_writebackPreSync0:
580     if (!Matcher::match_rule_supported(Op_CacheWBPreSync)) return false;
581     break;
582   case vmIntrinsics::_writebackPostSync0:
583     if (!Matcher::match_rule_supported(Op_CacheWBPostSync)) return false;
584     break;
585   case vmIntrinsics::_rint:
586   case vmIntrinsics::_ceil:
587   case vmIntrinsics::_floor:
588     if (!Matcher::match_rule_supported(Op_RoundDoubleMode)) return false;
589     break;
590   case vmIntrinsics::_dcopySign:
591     if (!Matcher::match_rule_supported(Op_CopySignD)) return false;
592     break;
593   case vmIntrinsics::_fcopySign:
594     if (!Matcher::match_rule_supported(Op_CopySignF)) return false;
595     break;
596   case vmIntrinsics::_dsignum:
597     if (!Matcher::match_rule_supported(Op_SignumD)) return false;
598     break;
599   case vmIntrinsics::_fsignum:
600     if (!Matcher::match_rule_supported(Op_SignumF)) return false;
601     break;
602   case vmIntrinsics::_floatIsInfinite:
603     if (!Matcher::match_rule_supported(Op_IsInfiniteF)) return false;
604     break;
605   case vmIntrinsics::_floatIsFinite:
606     if (!Matcher::match_rule_supported(Op_IsFiniteF)) return false;
607     break;
608   case vmIntrinsics::_doubleIsInfinite:
609     if (!Matcher::match_rule_supported(Op_IsInfiniteD)) return false;
610     break;
611   case vmIntrinsics::_doubleIsFinite:
612     if (!Matcher::match_rule_supported(Op_IsFiniteD)) return false;
613     break;
614   case vmIntrinsics::_hashCode:
615   case vmIntrinsics::_identityHashCode:
616   case vmIntrinsics::_getClass:
617   case vmIntrinsics::_dsin:
618   case vmIntrinsics::_dcos:
619   case vmIntrinsics::_dtan:
620   case vmIntrinsics::_dtanh:
621   case vmIntrinsics::_dabs:
622   case vmIntrinsics::_fabs:
623   case vmIntrinsics::_iabs:
624   case vmIntrinsics::_labs:
625   case vmIntrinsics::_datan2:
626   case vmIntrinsics::_dsqrt:
627   case vmIntrinsics::_dsqrt_strict:
628   case vmIntrinsics::_dexp:
629   case vmIntrinsics::_dlog:
630   case vmIntrinsics::_dlog10:
631   case vmIntrinsics::_dpow:
632   case vmIntrinsics::_roundD:
633   case vmIntrinsics::_roundF:
634   case vmIntrinsics::_min:
635   case vmIntrinsics::_max:
636   case vmIntrinsics::_min_strict:
637   case vmIntrinsics::_max_strict:
638   case vmIntrinsics::_maxL:
639   case vmIntrinsics::_minL:
640   case vmIntrinsics::_arraycopy:
641   case vmIntrinsics::_arraySort:
642   case vmIntrinsics::_arrayPartition:
643   case vmIntrinsics::_indexOfL:
644   case vmIntrinsics::_indexOfU:
645   case vmIntrinsics::_indexOfUL:
646   case vmIntrinsics::_indexOfIL:
647   case vmIntrinsics::_indexOfIU:
648   case vmIntrinsics::_indexOfIUL:
649   case vmIntrinsics::_indexOfU_char:
650   case vmIntrinsics::_indexOfL_char:
651   case vmIntrinsics::_toBytesStringU:
652   case vmIntrinsics::_getCharsStringU:
653   case vmIntrinsics::_getCharStringU:
654   case vmIntrinsics::_putCharStringU:
655   case vmIntrinsics::_makePrivateBuffer:
656   case vmIntrinsics::_finishPrivateBuffer:
657   case vmIntrinsics::_getReference:
658   case vmIntrinsics::_getBoolean:
659   case vmIntrinsics::_getByte:
660   case vmIntrinsics::_getShort:
661   case vmIntrinsics::_getChar:
662   case vmIntrinsics::_getInt:
663   case vmIntrinsics::_getLong:
664   case vmIntrinsics::_getFloat:
665   case vmIntrinsics::_getDouble:
666   case vmIntrinsics::_getValue:
667   case vmIntrinsics::_getFlatValue:
668   case vmIntrinsics::_putReference:
669   case vmIntrinsics::_putBoolean:
670   case vmIntrinsics::_putByte:
671   case vmIntrinsics::_putShort:
672   case vmIntrinsics::_putChar:
673   case vmIntrinsics::_putInt:
674   case vmIntrinsics::_putLong:
675   case vmIntrinsics::_putFloat:
676   case vmIntrinsics::_putDouble:
677   case vmIntrinsics::_putValue:
678   case vmIntrinsics::_putFlatValue:
679   case vmIntrinsics::_getReferenceVolatile:
680   case vmIntrinsics::_getBooleanVolatile:
681   case vmIntrinsics::_getByteVolatile:
682   case vmIntrinsics::_getShortVolatile:
683   case vmIntrinsics::_getCharVolatile:
684   case vmIntrinsics::_getIntVolatile:
685   case vmIntrinsics::_getLongVolatile:
686   case vmIntrinsics::_getFloatVolatile:
687   case vmIntrinsics::_getDoubleVolatile:
688   case vmIntrinsics::_putReferenceVolatile:
689   case vmIntrinsics::_putBooleanVolatile:
690   case vmIntrinsics::_putByteVolatile:
691   case vmIntrinsics::_putShortVolatile:
692   case vmIntrinsics::_putCharVolatile:
693   case vmIntrinsics::_putIntVolatile:
694   case vmIntrinsics::_putLongVolatile:
695   case vmIntrinsics::_putFloatVolatile:
696   case vmIntrinsics::_putDoubleVolatile:
697   case vmIntrinsics::_getReferenceAcquire:
698   case vmIntrinsics::_getBooleanAcquire:
699   case vmIntrinsics::_getByteAcquire:
700   case vmIntrinsics::_getShortAcquire:
701   case vmIntrinsics::_getCharAcquire:
702   case vmIntrinsics::_getIntAcquire:
703   case vmIntrinsics::_getLongAcquire:
704   case vmIntrinsics::_getFloatAcquire:
705   case vmIntrinsics::_getDoubleAcquire:
706   case vmIntrinsics::_putReferenceRelease:
707   case vmIntrinsics::_putBooleanRelease:
708   case vmIntrinsics::_putByteRelease:
709   case vmIntrinsics::_putShortRelease:
710   case vmIntrinsics::_putCharRelease:
711   case vmIntrinsics::_putIntRelease:
712   case vmIntrinsics::_putLongRelease:
713   case vmIntrinsics::_putFloatRelease:
714   case vmIntrinsics::_putDoubleRelease:
715   case vmIntrinsics::_getReferenceOpaque:
716   case vmIntrinsics::_getBooleanOpaque:
717   case vmIntrinsics::_getByteOpaque:
718   case vmIntrinsics::_getShortOpaque:
719   case vmIntrinsics::_getCharOpaque:
720   case vmIntrinsics::_getIntOpaque:
721   case vmIntrinsics::_getLongOpaque:
722   case vmIntrinsics::_getFloatOpaque:
723   case vmIntrinsics::_getDoubleOpaque:
724   case vmIntrinsics::_putReferenceOpaque:
725   case vmIntrinsics::_putBooleanOpaque:
726   case vmIntrinsics::_putByteOpaque:
727   case vmIntrinsics::_putShortOpaque:
728   case vmIntrinsics::_putCharOpaque:
729   case vmIntrinsics::_putIntOpaque:
730   case vmIntrinsics::_putLongOpaque:
731   case vmIntrinsics::_putFloatOpaque:
732   case vmIntrinsics::_putDoubleOpaque:
733   case vmIntrinsics::_getShortUnaligned:
734   case vmIntrinsics::_getCharUnaligned:
735   case vmIntrinsics::_getIntUnaligned:
736   case vmIntrinsics::_getLongUnaligned:
737   case vmIntrinsics::_putShortUnaligned:
738   case vmIntrinsics::_putCharUnaligned:
739   case vmIntrinsics::_putIntUnaligned:
740   case vmIntrinsics::_putLongUnaligned:
741   case vmIntrinsics::_loadFence:
742   case vmIntrinsics::_storeFence:
743   case vmIntrinsics::_storeStoreFence:
744   case vmIntrinsics::_fullFence:
745   case vmIntrinsics::_currentCarrierThread:
746   case vmIntrinsics::_currentThread:
747   case vmIntrinsics::_setCurrentThread:
748   case vmIntrinsics::_scopedValueCache:
749   case vmIntrinsics::_setScopedValueCache:
750   case vmIntrinsics::_Continuation_pin:
751   case vmIntrinsics::_Continuation_unpin:
752 #ifdef JFR_HAVE_INTRINSICS
753   case vmIntrinsics::_counterTime:
754   case vmIntrinsics::_getEventWriter:
755   case vmIntrinsics::_jvm_commit:
756 #endif
757   case vmIntrinsics::_currentTimeMillis:
758   case vmIntrinsics::_nanoTime:
759   case vmIntrinsics::_allocateInstance:
760   case vmIntrinsics::_allocateUninitializedArray:
761   case vmIntrinsics::_isFlatArray:
762   case vmIntrinsics::_newArray:
763   case vmIntrinsics::_newNullRestrictedNonAtomicArray:
764   case vmIntrinsics::_newNullRestrictedAtomicArray:
765   case vmIntrinsics::_newNullableAtomicArray:
766   case vmIntrinsics::_getLength:
767   case vmIntrinsics::_copyOf:
768   case vmIntrinsics::_copyOfRange:
769   case vmIntrinsics::_clone:
770   case vmIntrinsics::_isAssignableFrom:
771   case vmIntrinsics::_isInstance:
772   case vmIntrinsics::_isHidden:
773   case vmIntrinsics::_getSuperclass:
774   case vmIntrinsics::_getClassAccessFlags:
775   case vmIntrinsics::_floatToRawIntBits:
776   case vmIntrinsics::_floatToIntBits:
777   case vmIntrinsics::_intBitsToFloat:
778   case vmIntrinsics::_doubleToRawLongBits:
779   case vmIntrinsics::_doubleToLongBits:
780   case vmIntrinsics::_longBitsToDouble:
781   case vmIntrinsics::_Reference_get:
782   case vmIntrinsics::_Reference_refersTo0:
783   case vmIntrinsics::_PhantomReference_refersTo0:
784   case vmIntrinsics::_Reference_clear0:
785   case vmIntrinsics::_PhantomReference_clear0:
786   case vmIntrinsics::_Class_cast:
787   case vmIntrinsics::_aescrypt_encryptBlock:
788   case vmIntrinsics::_aescrypt_decryptBlock:
789   case vmIntrinsics::_cipherBlockChaining_encryptAESCrypt:
790   case vmIntrinsics::_cipherBlockChaining_decryptAESCrypt:
791   case vmIntrinsics::_counterMode_AESCrypt:
792   case vmIntrinsics::_md5_implCompress:
793   case vmIntrinsics::_sha_implCompress:
794   case vmIntrinsics::_sha2_implCompress:
795   case vmIntrinsics::_sha5_implCompress:
796   case vmIntrinsics::_sha3_implCompress:
797   case vmIntrinsics::_double_keccak:
798   case vmIntrinsics::_digestBase_implCompressMB:
799   case vmIntrinsics::_multiplyToLen:
800   case vmIntrinsics::_squareToLen:
801   case vmIntrinsics::_mulAdd:
802   case vmIntrinsics::_montgomeryMultiply:
803   case vmIntrinsics::_montgomerySquare:
804   case vmIntrinsics::_vectorizedMismatch:
805   case vmIntrinsics::_ghash_processBlocks:
806   case vmIntrinsics::_chacha20Block:
807   case vmIntrinsics::_kyberNtt:
808   case vmIntrinsics::_kyberInverseNtt:
809   case vmIntrinsics::_kyberNttMult:
810   case vmIntrinsics::_kyberAddPoly_2:
811   case vmIntrinsics::_kyberAddPoly_3:
812   case vmIntrinsics::_kyber12To16:
813   case vmIntrinsics::_kyberBarrettReduce:
814   case vmIntrinsics::_dilithiumAlmostNtt:
815   case vmIntrinsics::_dilithiumAlmostInverseNtt:
816   case vmIntrinsics::_dilithiumNttMult:
817   case vmIntrinsics::_dilithiumMontMulByConstant:
818   case vmIntrinsics::_dilithiumDecomposePoly:
819   case vmIntrinsics::_base64_encodeBlock:
820   case vmIntrinsics::_base64_decodeBlock:
821   case vmIntrinsics::_poly1305_processBlocks:
822   case vmIntrinsics::_intpoly_montgomeryMult_P256:
823   case vmIntrinsics::_intpoly_assign:
824   case vmIntrinsics::_updateCRC32:
825   case vmIntrinsics::_updateBytesCRC32:
826   case vmIntrinsics::_updateByteBufferCRC32:
827   case vmIntrinsics::_updateBytesCRC32C:
828   case vmIntrinsics::_updateDirectByteBufferCRC32C:
829   case vmIntrinsics::_updateBytesAdler32:
830   case vmIntrinsics::_updateByteBufferAdler32:
831   case vmIntrinsics::_profileBoolean:
832   case vmIntrinsics::_isCompileConstant:
833   case vmIntrinsics::_Preconditions_checkIndex:
834   case vmIntrinsics::_Preconditions_checkLongIndex:
835   case vmIntrinsics::_getObjectSize:
836     break;
837   case vmIntrinsics::_VectorCompressExpand:
838   case vmIntrinsics::_VectorUnaryOp:
839   case vmIntrinsics::_VectorBinaryOp:
840   case vmIntrinsics::_VectorTernaryOp:
841   case vmIntrinsics::_VectorFromBitsCoerced:
842   case vmIntrinsics::_VectorLoadOp:
843   case vmIntrinsics::_VectorLoadMaskedOp:
844   case vmIntrinsics::_VectorStoreOp:
845   case vmIntrinsics::_VectorStoreMaskedOp:
846   case vmIntrinsics::_VectorSelectFromTwoVectorOp:
847   case vmIntrinsics::_VectorGatherOp:
848   case vmIntrinsics::_VectorScatterOp:
849   case vmIntrinsics::_VectorReductionCoerced:
850   case vmIntrinsics::_VectorTest:
851   case vmIntrinsics::_VectorBlend:
852   case vmIntrinsics::_VectorRearrange:
853   case vmIntrinsics::_VectorSelectFrom:
854   case vmIntrinsics::_VectorCompare:
855   case vmIntrinsics::_VectorBroadcastInt:
856   case vmIntrinsics::_VectorConvert:
857   case vmIntrinsics::_VectorInsert:
858   case vmIntrinsics::_VectorExtract:
859   case vmIntrinsics::_VectorMaskOp:
860   case vmIntrinsics::_IndexVector:
861   case vmIntrinsics::_IndexPartiallyInUpperRange:
862     return EnableVectorSupport;
863   case vmIntrinsics::_VectorUnaryLibOp:
864   case vmIntrinsics::_VectorBinaryLibOp:
865     return EnableVectorSupport && Matcher::supports_vector_calling_convention();
866   case vmIntrinsics::_blackhole:
867 #if INCLUDE_JVMTI
868   case vmIntrinsics::_notifyJvmtiVThreadStart:
869   case vmIntrinsics::_notifyJvmtiVThreadEnd:
870   case vmIntrinsics::_notifyJvmtiVThreadMount:
871   case vmIntrinsics::_notifyJvmtiVThreadUnmount:
872   case vmIntrinsics::_notifyJvmtiVThreadDisableSuspend:
873 #endif
874     break;
875 
876   default:
877     return false;
878   }
879   return true;
880 }
881 
882 int C2Compiler::initial_code_buffer_size(int const_size) {
883   // See Compile::init_scratch_buffer_blob
884   int locs_size = sizeof(relocInfo) * PhaseOutput::MAX_locs_size;
885   int slop = 2 * CodeSection::end_slop(); // space between sections
886   return PhaseOutput::MAX_inst_size + PhaseOutput::MAX_stubs_size + const_size + slop + locs_size;
887 }