1 /*
  2  * Copyright (c) 1999, 2023, 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 "precompiled.hpp"
 26 #include "classfile/vmClasses.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 "utilities/macros.hpp"
 37 
 38 
 39 // register information defined by ADLC
 40 extern const char register_save_policy[];
 41 extern const int  register_save_type[];
 42 
 43 const char* C2Compiler::retry_no_subsuming_loads() {
 44   return "retry without subsuming loads";
 45 }
 46 const char* C2Compiler::retry_no_escape_analysis() {
 47   return "retry without escape analysis";
 48 }
 49 const char* C2Compiler::retry_no_locks_coarsening() {
 50   return "retry without locks coarsening";
 51 }
 52 const char* C2Compiler::retry_no_iterative_escape_analysis() {
 53   return "retry without iterative escape analysis";
 54 }
 55 const char* C2Compiler::retry_no_reduce_allocation_merges() {
 56   return "retry without reducing allocation merges";
 57 }
 58 
 59 void compiler_stubs_init(bool in_compiler_thread);
 60 
 61 bool C2Compiler::init_c2_runtime() {
 62 
 63   // Check assumptions used while running ADLC
 64   Compile::adlc_verification();
 65   assert(REG_COUNT <= ConcreteRegisterImpl::number_of_registers, "incompatible register counts");
 66 
 67   for (int i = 0; i < ConcreteRegisterImpl::number_of_registers ; i++ ) {
 68       OptoReg::vm2opto[i] = OptoReg::Bad;
 69   }
 70 
 71   for( OptoReg::Name i=OptoReg::Name(0); i<OptoReg::Name(REG_COUNT); i = OptoReg::add(i,1) ) {
 72     VMReg r = OptoReg::as_VMReg(i);
 73     if (r->is_valid()) {
 74       OptoReg::vm2opto[r->value()] = i;
 75     }
 76   }
 77 
 78   DEBUG_ONLY( Node::init_NodeProperty(); )
 79 
 80   compiler_stubs_init(true /* in_compiler_thread */); // generate compiler's intrinsics stubs
 81 
 82   Compile::pd_compiler2_init();
 83 
 84   CompilerThread* thread = CompilerThread::current();
 85 
 86   HandleMark handle_mark(thread);
 87   return OptoRuntime::generate(thread->env());
 88 }
 89 
 90 void C2Compiler::initialize() {
 91   assert(!CompilerConfig::is_c1_or_interpreter_only_no_jvmci(), "C2 compiler is launched, it's not c1/interpreter only mode");
 92   // The first compiler thread that gets here will initialize the
 93   // small amount of global state (and runtime stubs) that C2 needs.
 94 
 95   // There is a race possible once at startup and then we're fine
 96 
 97   // Note that this is being called from a compiler thread not the
 98   // main startup thread.
 99   if (should_perform_init()) {
100     bool successful = C2Compiler::init_c2_runtime();
101     int new_state = (successful) ? initialized : failed;
102     set_state(new_state);
103   }
104 }
105 
106 void C2Compiler::compile_method(ciEnv* env, ciMethod* target, int entry_bci, bool install_code, DirectiveSet* directive) {
107   assert(is_initialized(), "Compiler thread must be initialized");
108 
109   bool subsume_loads = SubsumeLoads;
110   bool do_escape_analysis = DoEscapeAnalysis;
111   bool do_iterative_escape_analysis = DoEscapeAnalysis;
112   bool do_reduce_allocation_merges = ReduceAllocationMerges && EliminateAllocations;
113   bool eliminate_boxing = EliminateAutoBox;
114   bool do_locks_coarsening = EliminateLocks;
115 
116   while (!env->failing()) {
117     // Attempt to compile while subsuming loads into machine instructions.
118     Options options(subsume_loads, do_escape_analysis, do_iterative_escape_analysis, do_reduce_allocation_merges, eliminate_boxing, do_locks_coarsening, install_code);
119     Compile C(env, target, entry_bci, options, directive);
120 
121     // Check result and retry if appropriate.
122     if (C.failure_reason() != nullptr) {
123       if (C.failure_reason_is(retry_no_subsuming_loads())) {
124         assert(subsume_loads, "must make progress");
125         subsume_loads = false;
126         env->report_failure(C.failure_reason());
127         continue;  // retry
128       }
129       if (C.failure_reason_is(retry_no_escape_analysis())) {
130         assert(do_escape_analysis, "must make progress");
131         do_escape_analysis = false;
132         env->report_failure(C.failure_reason());
133         continue;  // retry
134       }
135       if (C.failure_reason_is(retry_no_iterative_escape_analysis())) {
136         assert(do_iterative_escape_analysis, "must make progress");
137         do_iterative_escape_analysis = false;
138         env->report_failure(C.failure_reason());
139         continue;  // retry
140       }
141       if (C.failure_reason_is(retry_no_reduce_allocation_merges())) {
142         assert(do_reduce_allocation_merges, "must make progress");
143         do_reduce_allocation_merges = false;
144         env->report_failure(C.failure_reason());
145         continue;  // retry
146       }
147       if (C.failure_reason_is(retry_no_locks_coarsening())) {
148         assert(do_locks_coarsening, "must make progress");
149         do_locks_coarsening = false;
150         env->report_failure(C.failure_reason());
151         continue;  // retry
152       }
153       if (C.has_boxed_value()) {
154         // Recompile without boxing elimination regardless failure reason.
155         assert(eliminate_boxing, "must make progress");
156         eliminate_boxing = false;
157         env->report_failure(C.failure_reason());
158         continue;  // retry
159       }
160       // Pass any other failure reason up to the ciEnv.
161       // Note that serious, irreversible failures are already logged
162       // on the ciEnv via env->record_method_not_compilable().
163       env->record_failure(C.failure_reason());
164     }
165     if (StressRecompilation) {
166       if (subsume_loads) {
167         subsume_loads = false;
168         continue;  // retry
169       }
170       if (do_escape_analysis) {
171         do_escape_analysis = false;
172         continue;  // retry
173       }
174       if (do_locks_coarsening) {
175         do_locks_coarsening = false;
176         continue;  // retry
177       }
178     }
179     // print inlining for last compilation only
180     C.dump_print_inlining();
181 
182     // No retry; just break the loop.
183     break;
184   }
185 }
186 
187 void C2Compiler::print_timers() {
188   Compile::print_timers();
189 }
190 
191 bool C2Compiler::is_intrinsic_supported(const methodHandle& method) {
192   vmIntrinsics::ID id = method->intrinsic_id();
193   return C2Compiler::is_intrinsic_supported(id);
194 }
195 
196 bool C2Compiler::is_intrinsic_supported(vmIntrinsics::ID id) {
197   assert(id != vmIntrinsics::_none, "must be a VM intrinsic");
198 
199   if (id < vmIntrinsics::FIRST_ID || id > vmIntrinsics::LAST_COMPILER_INLINE) {
200     return false;
201   }
202 
203   switch (id) {
204   case vmIntrinsics::_compressStringC:
205   case vmIntrinsics::_compressStringB:
206     if (!Matcher::match_rule_supported(Op_StrCompressedCopy)) return false;
207     break;
208   case vmIntrinsics::_inflateStringC:
209   case vmIntrinsics::_inflateStringB:
210     if (!Matcher::match_rule_supported(Op_StrInflatedCopy)) return false;
211     break;
212   case vmIntrinsics::_compareToL:
213   case vmIntrinsics::_compareToU:
214   case vmIntrinsics::_compareToLU:
215   case vmIntrinsics::_compareToUL:
216     if (!Matcher::match_rule_supported(Op_StrComp)) return false;
217     break;
218   case vmIntrinsics::_equalsL:
219   case vmIntrinsics::_equalsU:
220     if (!Matcher::match_rule_supported(Op_StrEquals)) return false;
221     break;
222   case vmIntrinsics::_vectorizedHashCode:
223     if (!Matcher::match_rule_supported(Op_VectorizedHashCode)) return false;
224     break;
225   case vmIntrinsics::_equalsB:
226   case vmIntrinsics::_equalsC:
227     if (!Matcher::match_rule_supported(Op_AryEq)) return false;
228     break;
229   case vmIntrinsics::_copyMemory:
230     if (StubRoutines::unsafe_arraycopy() == nullptr) return false;
231     break;
232   case vmIntrinsics::_electronicCodeBook_encryptAESCrypt:
233     if (StubRoutines::electronicCodeBook_encryptAESCrypt() == nullptr) return false;
234     break;
235   case vmIntrinsics::_electronicCodeBook_decryptAESCrypt:
236     if (StubRoutines::electronicCodeBook_decryptAESCrypt() == nullptr) return false;
237     break;
238   case vmIntrinsics::_galoisCounterMode_AESCrypt:
239     if (StubRoutines::galoisCounterMode_AESCrypt() == nullptr) return false;
240     break;
241   case vmIntrinsics::_bigIntegerRightShiftWorker:
242     if (StubRoutines::bigIntegerRightShift() == nullptr) return false;
243     break;
244   case vmIntrinsics::_bigIntegerLeftShiftWorker:
245     if (StubRoutines::bigIntegerLeftShift() == nullptr) return false;
246     break;
247   case vmIntrinsics::_encodeAsciiArray:
248     if (!Matcher::match_rule_supported(Op_EncodeISOArray) || !Matcher::supports_encode_ascii_array) return false;
249     break;
250   case vmIntrinsics::_encodeISOArray:
251   case vmIntrinsics::_encodeByteISOArray:
252     if (!Matcher::match_rule_supported(Op_EncodeISOArray)) return false;
253     break;
254   case vmIntrinsics::_countPositives:
255     if (!Matcher::match_rule_supported(Op_CountPositives))  return false;
256     break;
257   case vmIntrinsics::_bitCount_i:
258     if (!Matcher::match_rule_supported(Op_PopCountI)) return false;
259     break;
260   case vmIntrinsics::_bitCount_l:
261     if (!Matcher::match_rule_supported(Op_PopCountL)) return false;
262     break;
263   case vmIntrinsics::_compress_i:
264   case vmIntrinsics::_compress_l:
265     if (!Matcher::match_rule_supported(Op_CompressBits)) return false;
266     break;
267   case vmIntrinsics::_expand_i:
268   case vmIntrinsics::_expand_l:
269     if (!Matcher::match_rule_supported(Op_ExpandBits)) return false;
270     break;
271   case vmIntrinsics::_numberOfLeadingZeros_i:
272     if (!Matcher::match_rule_supported(Op_CountLeadingZerosI)) return false;
273     break;
274   case vmIntrinsics::_numberOfLeadingZeros_l:
275     if (!Matcher::match_rule_supported(Op_CountLeadingZerosL)) return false;
276     break;
277   case vmIntrinsics::_numberOfTrailingZeros_i:
278     if (!Matcher::match_rule_supported(Op_CountTrailingZerosI)) return false;
279     break;
280   case vmIntrinsics::_numberOfTrailingZeros_l:
281     if (!Matcher::match_rule_supported(Op_CountTrailingZerosL)) return false;
282     break;
283   case vmIntrinsics::_reverse_i:
284     if (!Matcher::match_rule_supported(Op_ReverseI)) return false;
285     break;
286   case vmIntrinsics::_reverse_l:
287     if (!Matcher::match_rule_supported(Op_ReverseL)) return false;
288     break;
289   case vmIntrinsics::_reverseBytes_c:
290     if (!Matcher::match_rule_supported(Op_ReverseBytesUS)) return false;
291     break;
292   case vmIntrinsics::_reverseBytes_s:
293     if (!Matcher::match_rule_supported(Op_ReverseBytesS)) return false;
294     break;
295   case vmIntrinsics::_reverseBytes_i:
296     if (!Matcher::match_rule_supported(Op_ReverseBytesI)) return false;
297     break;
298   case vmIntrinsics::_reverseBytes_l:
299     if (!Matcher::match_rule_supported(Op_ReverseBytesL)) return false;
300     break;
301   case vmIntrinsics::_compareUnsigned_i:
302     if (!Matcher::match_rule_supported(Op_CmpU3)) return false;
303     break;
304   case vmIntrinsics::_compareUnsigned_l:
305     if (!Matcher::match_rule_supported(Op_CmpUL3)) return false;
306     break;
307   case vmIntrinsics::_divideUnsigned_i:
308     if (!Matcher::match_rule_supported(Op_UDivI)) return false;
309     break;
310   case vmIntrinsics::_remainderUnsigned_i:
311     if (!Matcher::match_rule_supported(Op_UModI)) return false;
312     break;
313   case vmIntrinsics::_divideUnsigned_l:
314     if (!Matcher::match_rule_supported(Op_UDivL)) return false;
315     break;
316   case vmIntrinsics::_remainderUnsigned_l:
317     if (!Matcher::match_rule_supported(Op_UModL)) return false;
318     break;
319   case vmIntrinsics::_float16ToFloat:
320     if (!Matcher::match_rule_supported(Op_ConvHF2F)) return false;
321     break;
322   case vmIntrinsics::_floatToFloat16:
323     if (!Matcher::match_rule_supported(Op_ConvF2HF)) return false;
324     break;
325 
326   /* CompareAndSet, Object: */
327   case vmIntrinsics::_compareAndSetReference:
328 #ifdef _LP64
329     if ( UseCompressedOops && !Matcher::match_rule_supported(Op_CompareAndSwapN)) return false;
330     if (!UseCompressedOops && !Matcher::match_rule_supported(Op_CompareAndSwapP)) return false;
331 #else
332     if (!Matcher::match_rule_supported(Op_CompareAndSwapP)) return false;
333 #endif
334     break;
335   case vmIntrinsics::_weakCompareAndSetReferencePlain:
336   case vmIntrinsics::_weakCompareAndSetReferenceAcquire:
337   case vmIntrinsics::_weakCompareAndSetReferenceRelease:
338   case vmIntrinsics::_weakCompareAndSetReference:
339 #ifdef _LP64
340     if ( UseCompressedOops && !Matcher::match_rule_supported(Op_WeakCompareAndSwapN)) return false;
341     if (!UseCompressedOops && !Matcher::match_rule_supported(Op_WeakCompareAndSwapP)) return false;
342 #else
343     if (!Matcher::match_rule_supported(Op_WeakCompareAndSwapP)) return false;
344 #endif
345     break;
346   /* CompareAndSet, Long: */
347   case vmIntrinsics::_compareAndSetLong:
348     if (!Matcher::match_rule_supported(Op_CompareAndSwapL)) return false;
349     break;
350   case vmIntrinsics::_weakCompareAndSetLongPlain:
351   case vmIntrinsics::_weakCompareAndSetLongAcquire:
352   case vmIntrinsics::_weakCompareAndSetLongRelease:
353   case vmIntrinsics::_weakCompareAndSetLong:
354     if (!Matcher::match_rule_supported(Op_WeakCompareAndSwapL)) return false;
355     break;
356 
357   /* CompareAndSet, Int: */
358   case vmIntrinsics::_compareAndSetInt:
359     if (!Matcher::match_rule_supported(Op_CompareAndSwapI)) return false;
360     break;
361   case vmIntrinsics::_weakCompareAndSetIntPlain:
362   case vmIntrinsics::_weakCompareAndSetIntAcquire:
363   case vmIntrinsics::_weakCompareAndSetIntRelease:
364   case vmIntrinsics::_weakCompareAndSetInt:
365     if (!Matcher::match_rule_supported(Op_WeakCompareAndSwapI)) return false;
366     break;
367 
368   /* CompareAndSet, Byte: */
369   case vmIntrinsics::_compareAndSetByte:
370     if (!Matcher::match_rule_supported(Op_CompareAndSwapB)) return false;
371     break;
372   case vmIntrinsics::_weakCompareAndSetBytePlain:
373   case vmIntrinsics::_weakCompareAndSetByteAcquire:
374   case vmIntrinsics::_weakCompareAndSetByteRelease:
375   case vmIntrinsics::_weakCompareAndSetByte:
376     if (!Matcher::match_rule_supported(Op_WeakCompareAndSwapB)) return false;
377     break;
378 
379   /* CompareAndSet, Short: */
380   case vmIntrinsics::_compareAndSetShort:
381     if (!Matcher::match_rule_supported(Op_CompareAndSwapS)) return false;
382     break;
383   case vmIntrinsics::_weakCompareAndSetShortPlain:
384   case vmIntrinsics::_weakCompareAndSetShortAcquire:
385   case vmIntrinsics::_weakCompareAndSetShortRelease:
386   case vmIntrinsics::_weakCompareAndSetShort:
387     if (!Matcher::match_rule_supported(Op_WeakCompareAndSwapS)) return false;
388     break;
389 
390   /* CompareAndExchange, Object: */
391   case vmIntrinsics::_compareAndExchangeReference:
392   case vmIntrinsics::_compareAndExchangeReferenceAcquire:
393   case vmIntrinsics::_compareAndExchangeReferenceRelease:
394 #ifdef _LP64
395     if ( UseCompressedOops && !Matcher::match_rule_supported(Op_CompareAndExchangeN)) return false;
396     if (!UseCompressedOops && !Matcher::match_rule_supported(Op_CompareAndExchangeP)) return false;
397 #else
398     if (!Matcher::match_rule_supported(Op_CompareAndExchangeP)) return false;
399 #endif
400     break;
401 
402   /* CompareAndExchange, Long: */
403   case vmIntrinsics::_compareAndExchangeLong:
404   case vmIntrinsics::_compareAndExchangeLongAcquire:
405   case vmIntrinsics::_compareAndExchangeLongRelease:
406     if (!Matcher::match_rule_supported(Op_CompareAndExchangeL)) return false;
407     break;
408 
409   /* CompareAndExchange, Int: */
410   case vmIntrinsics::_compareAndExchangeInt:
411   case vmIntrinsics::_compareAndExchangeIntAcquire:
412   case vmIntrinsics::_compareAndExchangeIntRelease:
413     if (!Matcher::match_rule_supported(Op_CompareAndExchangeI)) return false;
414     break;
415 
416   /* CompareAndExchange, Byte: */
417   case vmIntrinsics::_compareAndExchangeByte:
418   case vmIntrinsics::_compareAndExchangeByteAcquire:
419   case vmIntrinsics::_compareAndExchangeByteRelease:
420     if (!Matcher::match_rule_supported(Op_CompareAndExchangeB)) return false;
421     break;
422 
423   /* CompareAndExchange, Short: */
424   case vmIntrinsics::_compareAndExchangeShort:
425   case vmIntrinsics::_compareAndExchangeShortAcquire:
426   case vmIntrinsics::_compareAndExchangeShortRelease:
427     if (!Matcher::match_rule_supported(Op_CompareAndExchangeS)) return false;
428     break;
429 
430   case vmIntrinsics::_getAndAddByte:
431     if (!Matcher::match_rule_supported(Op_GetAndAddB)) return false;
432     break;
433   case vmIntrinsics::_getAndAddShort:
434     if (!Matcher::match_rule_supported(Op_GetAndAddS)) return false;
435     break;
436   case vmIntrinsics::_getAndAddInt:
437     if (!Matcher::match_rule_supported(Op_GetAndAddI)) return false;
438     break;
439   case vmIntrinsics::_getAndAddLong:
440     if (!Matcher::match_rule_supported(Op_GetAndAddL)) return false;
441     break;
442 
443   case vmIntrinsics::_getAndSetByte:
444     if (!Matcher::match_rule_supported(Op_GetAndSetB)) return false;
445     break;
446   case vmIntrinsics::_getAndSetShort:
447     if (!Matcher::match_rule_supported(Op_GetAndSetS)) return false;
448     break;
449   case vmIntrinsics::_getAndSetInt:
450     if (!Matcher::match_rule_supported(Op_GetAndSetI)) return false;
451     break;
452   case vmIntrinsics::_getAndSetLong:
453     if (!Matcher::match_rule_supported(Op_GetAndSetL)) return false;
454     break;
455   case vmIntrinsics::_getAndSetReference:
456 #ifdef _LP64
457     if (!UseCompressedOops && !Matcher::match_rule_supported(Op_GetAndSetP)) return false;
458     if (UseCompressedOops && !Matcher::match_rule_supported(Op_GetAndSetN)) return false;
459     break;
460 #else
461     if (!Matcher::match_rule_supported(Op_GetAndSetP)) return false;
462     break;
463 #endif
464   case vmIntrinsics::_incrementExactI:
465   case vmIntrinsics::_addExactI:
466     if (!Matcher::match_rule_supported(Op_OverflowAddI)) return false;
467     break;
468   case vmIntrinsics::_incrementExactL:
469   case vmIntrinsics::_addExactL:
470     if (!Matcher::match_rule_supported(Op_OverflowAddL)) return false;
471     break;
472   case vmIntrinsics::_decrementExactI:
473   case vmIntrinsics::_subtractExactI:
474     if (!Matcher::match_rule_supported(Op_OverflowSubI)) return false;
475     break;
476   case vmIntrinsics::_decrementExactL:
477   case vmIntrinsics::_subtractExactL:
478     if (!Matcher::match_rule_supported(Op_OverflowSubL)) return false;
479     break;
480   case vmIntrinsics::_negateExactI:
481     if (!Matcher::match_rule_supported(Op_OverflowSubI)) return false;
482     break;
483   case vmIntrinsics::_negateExactL:
484     if (!Matcher::match_rule_supported(Op_OverflowSubL)) return false;
485     break;
486   case vmIntrinsics::_multiplyExactI:
487     if (!Matcher::match_rule_supported(Op_OverflowMulI)) return false;
488     break;
489   case vmIntrinsics::_multiplyExactL:
490     if (!Matcher::match_rule_supported(Op_OverflowMulL)) return false;
491     break;
492   case vmIntrinsics::_multiplyHigh:
493     if (!Matcher::match_rule_supported(Op_MulHiL)) return false;
494     break;
495   case vmIntrinsics::_unsignedMultiplyHigh:
496     if (!Matcher::match_rule_supported(Op_UMulHiL)) return false;
497     break;
498   case vmIntrinsics::_getCallerClass:
499     if (vmClasses::reflect_CallerSensitive_klass() == nullptr) return false;
500     break;
501   case vmIntrinsics::_onSpinWait:
502     if (!Matcher::match_rule_supported(Op_OnSpinWait)) return false;
503     break;
504   case vmIntrinsics::_fmaD:
505     if (!Matcher::match_rule_supported(Op_FmaD)) return false;
506     break;
507   case vmIntrinsics::_fmaF:
508     if (!Matcher::match_rule_supported(Op_FmaF)) return false;
509     break;
510   case vmIntrinsics::_isDigit:
511     if (!Matcher::match_rule_supported(Op_Digit)) return false;
512     break;
513   case vmIntrinsics::_isLowerCase:
514     if (!Matcher::match_rule_supported(Op_LowerCase)) return false;
515     break;
516   case vmIntrinsics::_isUpperCase:
517     if (!Matcher::match_rule_supported(Op_UpperCase)) return false;
518     break;
519   case vmIntrinsics::_isWhitespace:
520     if (!Matcher::match_rule_supported(Op_Whitespace)) return false;
521     break;
522   case vmIntrinsics::_maxF:
523   case vmIntrinsics::_maxF_strict:
524     if (!Matcher::match_rule_supported(Op_MaxF)) return false;
525     break;
526   case vmIntrinsics::_minF:
527   case vmIntrinsics::_minF_strict:
528     if (!Matcher::match_rule_supported(Op_MinF)) return false;
529     break;
530   case vmIntrinsics::_maxD:
531   case vmIntrinsics::_maxD_strict:
532     if (!Matcher::match_rule_supported(Op_MaxD)) return false;
533     break;
534   case vmIntrinsics::_minD:
535   case vmIntrinsics::_minD_strict:
536     if (!Matcher::match_rule_supported(Op_MinD)) return false;
537     break;
538   case vmIntrinsics::_writeback0:
539     if (!Matcher::match_rule_supported(Op_CacheWB)) return false;
540     break;
541   case vmIntrinsics::_writebackPreSync0:
542     if (!Matcher::match_rule_supported(Op_CacheWBPreSync)) return false;
543     break;
544   case vmIntrinsics::_writebackPostSync0:
545     if (!Matcher::match_rule_supported(Op_CacheWBPostSync)) return false;
546     break;
547   case vmIntrinsics::_rint:
548   case vmIntrinsics::_ceil:
549   case vmIntrinsics::_floor:
550     if (!Matcher::match_rule_supported(Op_RoundDoubleMode)) return false;
551     break;
552   case vmIntrinsics::_dcopySign:
553     if (!Matcher::match_rule_supported(Op_CopySignD)) return false;
554     break;
555   case vmIntrinsics::_fcopySign:
556     if (!Matcher::match_rule_supported(Op_CopySignF)) return false;
557     break;
558   case vmIntrinsics::_dsignum:
559     if (!Matcher::match_rule_supported(Op_SignumD)) return false;
560     break;
561   case vmIntrinsics::_fsignum:
562     if (!Matcher::match_rule_supported(Op_SignumF)) return false;
563     break;
564   case vmIntrinsics::_floatIsInfinite:
565     if (!Matcher::match_rule_supported(Op_IsInfiniteF)) return false;
566     break;
567   case vmIntrinsics::_floatIsFinite:
568     if (!Matcher::match_rule_supported(Op_IsFiniteF)) return false;
569     break;
570   case vmIntrinsics::_doubleIsInfinite:
571     if (!Matcher::match_rule_supported(Op_IsInfiniteD)) return false;
572     break;
573   case vmIntrinsics::_doubleIsFinite:
574     if (!Matcher::match_rule_supported(Op_IsFiniteD)) return false;
575     break;
576   case vmIntrinsics::_hashCode:
577   case vmIntrinsics::_identityHashCode:
578   case vmIntrinsics::_getClass:
579   case vmIntrinsics::_dsin:
580   case vmIntrinsics::_dcos:
581   case vmIntrinsics::_dtan:
582   case vmIntrinsics::_dabs:
583   case vmIntrinsics::_fabs:
584   case vmIntrinsics::_iabs:
585   case vmIntrinsics::_labs:
586   case vmIntrinsics::_datan2:
587   case vmIntrinsics::_dsqrt:
588   case vmIntrinsics::_dsqrt_strict:
589   case vmIntrinsics::_dexp:
590   case vmIntrinsics::_dlog:
591   case vmIntrinsics::_dlog10:
592   case vmIntrinsics::_dpow:
593   case vmIntrinsics::_roundD:
594   case vmIntrinsics::_roundF:
595   case vmIntrinsics::_min:
596   case vmIntrinsics::_max:
597   case vmIntrinsics::_min_strict:
598   case vmIntrinsics::_max_strict:
599   case vmIntrinsics::_arraycopy:
600   case vmIntrinsics::_indexOfL:
601   case vmIntrinsics::_indexOfU:
602   case vmIntrinsics::_indexOfUL:
603   case vmIntrinsics::_indexOfIL:
604   case vmIntrinsics::_indexOfIU:
605   case vmIntrinsics::_indexOfIUL:
606   case vmIntrinsics::_indexOfU_char:
607   case vmIntrinsics::_indexOfL_char:
608   case vmIntrinsics::_toBytesStringU:
609   case vmIntrinsics::_getCharsStringU:
610   case vmIntrinsics::_getCharStringU:
611   case vmIntrinsics::_putCharStringU:
612   case vmIntrinsics::_getReference:
613   case vmIntrinsics::_getBoolean:
614   case vmIntrinsics::_getByte:
615   case vmIntrinsics::_getShort:
616   case vmIntrinsics::_getChar:
617   case vmIntrinsics::_getInt:
618   case vmIntrinsics::_getLong:
619   case vmIntrinsics::_getFloat:
620   case vmIntrinsics::_getDouble:
621   case vmIntrinsics::_putReference:
622   case vmIntrinsics::_putBoolean:
623   case vmIntrinsics::_putByte:
624   case vmIntrinsics::_putShort:
625   case vmIntrinsics::_putChar:
626   case vmIntrinsics::_putInt:
627   case vmIntrinsics::_putLong:
628   case vmIntrinsics::_putFloat:
629   case vmIntrinsics::_putDouble:
630   case vmIntrinsics::_getReferenceVolatile:
631   case vmIntrinsics::_getBooleanVolatile:
632   case vmIntrinsics::_getByteVolatile:
633   case vmIntrinsics::_getShortVolatile:
634   case vmIntrinsics::_getCharVolatile:
635   case vmIntrinsics::_getIntVolatile:
636   case vmIntrinsics::_getLongVolatile:
637   case vmIntrinsics::_getFloatVolatile:
638   case vmIntrinsics::_getDoubleVolatile:
639   case vmIntrinsics::_putReferenceVolatile:
640   case vmIntrinsics::_putBooleanVolatile:
641   case vmIntrinsics::_putByteVolatile:
642   case vmIntrinsics::_putShortVolatile:
643   case vmIntrinsics::_putCharVolatile:
644   case vmIntrinsics::_putIntVolatile:
645   case vmIntrinsics::_putLongVolatile:
646   case vmIntrinsics::_putFloatVolatile:
647   case vmIntrinsics::_putDoubleVolatile:
648   case vmIntrinsics::_getReferenceAcquire:
649   case vmIntrinsics::_getBooleanAcquire:
650   case vmIntrinsics::_getByteAcquire:
651   case vmIntrinsics::_getShortAcquire:
652   case vmIntrinsics::_getCharAcquire:
653   case vmIntrinsics::_getIntAcquire:
654   case vmIntrinsics::_getLongAcquire:
655   case vmIntrinsics::_getFloatAcquire:
656   case vmIntrinsics::_getDoubleAcquire:
657   case vmIntrinsics::_putReferenceRelease:
658   case vmIntrinsics::_putBooleanRelease:
659   case vmIntrinsics::_putByteRelease:
660   case vmIntrinsics::_putShortRelease:
661   case vmIntrinsics::_putCharRelease:
662   case vmIntrinsics::_putIntRelease:
663   case vmIntrinsics::_putLongRelease:
664   case vmIntrinsics::_putFloatRelease:
665   case vmIntrinsics::_putDoubleRelease:
666   case vmIntrinsics::_getReferenceOpaque:
667   case vmIntrinsics::_getBooleanOpaque:
668   case vmIntrinsics::_getByteOpaque:
669   case vmIntrinsics::_getShortOpaque:
670   case vmIntrinsics::_getCharOpaque:
671   case vmIntrinsics::_getIntOpaque:
672   case vmIntrinsics::_getLongOpaque:
673   case vmIntrinsics::_getFloatOpaque:
674   case vmIntrinsics::_getDoubleOpaque:
675   case vmIntrinsics::_putReferenceOpaque:
676   case vmIntrinsics::_putBooleanOpaque:
677   case vmIntrinsics::_putByteOpaque:
678   case vmIntrinsics::_putShortOpaque:
679   case vmIntrinsics::_putCharOpaque:
680   case vmIntrinsics::_putIntOpaque:
681   case vmIntrinsics::_putLongOpaque:
682   case vmIntrinsics::_putFloatOpaque:
683   case vmIntrinsics::_putDoubleOpaque:
684   case vmIntrinsics::_getShortUnaligned:
685   case vmIntrinsics::_getCharUnaligned:
686   case vmIntrinsics::_getIntUnaligned:
687   case vmIntrinsics::_getLongUnaligned:
688   case vmIntrinsics::_putShortUnaligned:
689   case vmIntrinsics::_putCharUnaligned:
690   case vmIntrinsics::_putIntUnaligned:
691   case vmIntrinsics::_putLongUnaligned:
692   case vmIntrinsics::_loadFence:
693   case vmIntrinsics::_storeFence:
694   case vmIntrinsics::_storeStoreFence:
695   case vmIntrinsics::_fullFence:
696   case vmIntrinsics::_currentCarrierThread:
697   case vmIntrinsics::_currentThread:
698   case vmIntrinsics::_setCurrentThread:
699   case vmIntrinsics::_scopedValueCache:
700   case vmIntrinsics::_setScopedValueCache:
701 #ifdef JFR_HAVE_INTRINSICS
702   case vmIntrinsics::_counterTime:
703   case vmIntrinsics::_getEventWriter:
704   case vmIntrinsics::_jvm_commit:
705 #endif
706   case vmIntrinsics::_currentTimeMillis:
707   case vmIntrinsics::_nanoTime:
708   case vmIntrinsics::_allocateInstance:
709   case vmIntrinsics::_allocateUninitializedArray:
710   case vmIntrinsics::_newArray:
711   case vmIntrinsics::_getLength:
712   case vmIntrinsics::_copyOf:
713   case vmIntrinsics::_copyOfRange:
714   case vmIntrinsics::_clone:
715   case vmIntrinsics::_isAssignableFrom:
716   case vmIntrinsics::_isInstance:
717   case vmIntrinsics::_getModifiers:
718   case vmIntrinsics::_isInterface:
719   case vmIntrinsics::_isArray:
720   case vmIntrinsics::_isPrimitive:
721   case vmIntrinsics::_isHidden:
722   case vmIntrinsics::_getSuperclass:
723   case vmIntrinsics::_getClassAccessFlags:
724   case vmIntrinsics::_floatToRawIntBits:
725   case vmIntrinsics::_floatToIntBits:
726   case vmIntrinsics::_intBitsToFloat:
727   case vmIntrinsics::_doubleToRawLongBits:
728   case vmIntrinsics::_doubleToLongBits:
729   case vmIntrinsics::_longBitsToDouble:
730   case vmIntrinsics::_Reference_get:
731   case vmIntrinsics::_Reference_refersTo0:
732   case vmIntrinsics::_PhantomReference_refersTo0:
733   case vmIntrinsics::_Class_cast:
734   case vmIntrinsics::_aescrypt_encryptBlock:
735   case vmIntrinsics::_aescrypt_decryptBlock:
736   case vmIntrinsics::_cipherBlockChaining_encryptAESCrypt:
737   case vmIntrinsics::_cipherBlockChaining_decryptAESCrypt:
738   case vmIntrinsics::_counterMode_AESCrypt:
739   case vmIntrinsics::_md5_implCompress:
740   case vmIntrinsics::_sha_implCompress:
741   case vmIntrinsics::_sha2_implCompress:
742   case vmIntrinsics::_sha5_implCompress:
743   case vmIntrinsics::_sha3_implCompress:
744   case vmIntrinsics::_digestBase_implCompressMB:
745   case vmIntrinsics::_multiplyToLen:
746   case vmIntrinsics::_squareToLen:
747   case vmIntrinsics::_mulAdd:
748   case vmIntrinsics::_montgomeryMultiply:
749   case vmIntrinsics::_montgomerySquare:
750   case vmIntrinsics::_vectorizedMismatch:
751   case vmIntrinsics::_ghash_processBlocks:
752   case vmIntrinsics::_chacha20Block:
753   case vmIntrinsics::_base64_encodeBlock:
754   case vmIntrinsics::_base64_decodeBlock:
755   case vmIntrinsics::_poly1305_processBlocks:
756   case vmIntrinsics::_updateCRC32:
757   case vmIntrinsics::_updateBytesCRC32:
758   case vmIntrinsics::_updateByteBufferCRC32:
759   case vmIntrinsics::_updateBytesCRC32C:
760   case vmIntrinsics::_updateDirectByteBufferCRC32C:
761   case vmIntrinsics::_updateBytesAdler32:
762   case vmIntrinsics::_updateByteBufferAdler32:
763   case vmIntrinsics::_profileBoolean:
764   case vmIntrinsics::_isCompileConstant:
765   case vmIntrinsics::_Preconditions_checkIndex:
766   case vmIntrinsics::_Preconditions_checkLongIndex:
767   case vmIntrinsics::_getObjectSize:
768     break;
769   case vmIntrinsics::_VectorCompressExpand:
770   case vmIntrinsics::_VectorUnaryOp:
771   case vmIntrinsics::_VectorBinaryOp:
772   case vmIntrinsics::_VectorTernaryOp:
773   case vmIntrinsics::_VectorFromBitsCoerced:
774   case vmIntrinsics::_VectorShuffleIota:
775   case vmIntrinsics::_VectorShuffleToVector:
776   case vmIntrinsics::_VectorLoadOp:
777   case vmIntrinsics::_VectorLoadMaskedOp:
778   case vmIntrinsics::_VectorStoreOp:
779   case vmIntrinsics::_VectorStoreMaskedOp:
780   case vmIntrinsics::_VectorGatherOp:
781   case vmIntrinsics::_VectorScatterOp:
782   case vmIntrinsics::_VectorReductionCoerced:
783   case vmIntrinsics::_VectorTest:
784   case vmIntrinsics::_VectorBlend:
785   case vmIntrinsics::_VectorRearrange:
786   case vmIntrinsics::_VectorCompare:
787   case vmIntrinsics::_VectorBroadcastInt:
788   case vmIntrinsics::_VectorConvert:
789   case vmIntrinsics::_VectorInsert:
790   case vmIntrinsics::_VectorExtract:
791   case vmIntrinsics::_VectorMaskOp:
792   case vmIntrinsics::_IndexVector:
793   case vmIntrinsics::_IndexPartiallyInUpperRange:
794     return EnableVectorSupport;
795   case vmIntrinsics::_blackhole:
796 #if INCLUDE_JVMTI
797   case vmIntrinsics::_notifyJvmtiVThreadStart:
798   case vmIntrinsics::_notifyJvmtiVThreadEnd:
799   case vmIntrinsics::_notifyJvmtiVThreadMount:
800   case vmIntrinsics::_notifyJvmtiVThreadUnmount:
801   case vmIntrinsics::_notifyJvmtiVThreadHideFrames:
802 #endif
803     break;
804 
805   default:
806     return false;
807   }
808   return true;
809 }
810 
811 int C2Compiler::initial_code_buffer_size(int const_size) {
812   // See Compile::init_scratch_buffer_blob
813   int locs_size = sizeof(relocInfo) * PhaseOutput::MAX_locs_size;
814   int slop = 2 * CodeSection::end_slop(); // space between sections
815   return PhaseOutput::MAX_inst_size + PhaseOutput::MAX_stubs_size + const_size + slop + locs_size;
816 }