1 /*
2 * Copyright (c) 1999, 2013, 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 "ci/ciCallProfile.hpp"
27 #include "ci/ciExceptionHandler.hpp"
28 #include "ci/ciInstanceKlass.hpp"
29 #include "ci/ciMethod.hpp"
30 #include "ci/ciMethodBlocks.hpp"
31 #include "ci/ciMethodData.hpp"
32 #include "ci/ciStreams.hpp"
33 #include "ci/ciSymbol.hpp"
34 #include "ci/ciReplay.hpp"
35 #include "ci/ciUtilities.hpp"
36 #include "classfile/systemDictionary.hpp"
37 #include "compiler/abstractCompiler.hpp"
38 #include "compiler/compilerOracle.hpp"
39 #include "compiler/methodLiveness.hpp"
40 #include "interpreter/interpreter.hpp"
41 #include "interpreter/linkResolver.hpp"
42 #include "interpreter/oopMapCache.hpp"
43 #include "memory/allocation.inline.hpp"
44 #include "memory/resourceArea.hpp"
45 #include "oops/generateOopMap.hpp"
46 #include "oops/oop.inline.hpp"
47 #include "prims/nativeLookup.hpp"
48 #include "runtime/deoptimization.hpp"
49 #include "utilities/bitMap.inline.hpp"
50 #include "utilities/xmlstream.hpp"
51 #ifdef COMPILER2
52 #include "ci/bcEscapeAnalyzer.hpp"
53 #include "ci/ciTypeFlow.hpp"
54 #include "oops/method.hpp"
55 #endif
56 #ifdef SHARK
57 #include "ci/ciTypeFlow.hpp"
58 #include "oops/method.hpp"
59 #endif
60
61 // ciMethod
62 //
63 // This class represents a Method* in the HotSpot virtual
64 // machine.
65
66
67 // ------------------------------------------------------------------
68 // ciMethod::ciMethod
69 //
70 // Loaded method.
71 ciMethod::ciMethod(methodHandle h_m) : ciMetadata(h_m()) {
72 assert(h_m() != NULL, "no null method");
73
74 // These fields are always filled in in loaded methods.
75 _flags = ciFlags(h_m()->access_flags());
76
77 // Easy to compute, so fill them in now.
78 _max_stack = h_m()->max_stack();
79 _max_locals = h_m()->max_locals();
80 _code_size = h_m()->code_size();
81 _intrinsic_id = h_m()->intrinsic_id();
82 _handler_count = h_m()->exception_table_length();
83 _uses_monitors = h_m()->access_flags().has_monitor_bytecodes();
84 _balanced_monitors = !_uses_monitors || h_m()->access_flags().is_monitor_matching();
85 _is_c1_compilable = !h_m()->is_not_c1_compilable();
86 _is_c2_compilable = !h_m()->is_not_c2_compilable();
87 // Lazy fields, filled in on demand. Require allocation.
88 _code = NULL;
89 _exception_handlers = NULL;
90 _liveness = NULL;
91 _method_blocks = NULL;
92 #if defined(COMPILER2) || defined(SHARK)
93 _flow = NULL;
94 _bcea = NULL;
95 #endif // COMPILER2 || SHARK
96
97 ciEnv *env = CURRENT_ENV;
98 if (env->jvmti_can_hotswap_or_post_breakpoint() && can_be_compiled()) {
99 // 6328518 check hotswap conditions under the right lock.
100 MutexLocker locker(Compile_lock);
101 if (Dependencies::check_evol_method(h_m()) != NULL) {
102 _is_c1_compilable = false;
103 _is_c2_compilable = false;
104 }
105 } else {
106 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops());
107 }
108
109 if (h_m()->method_holder()->is_linked()) {
110 _can_be_statically_bound = h_m()->can_be_statically_bound();
111 } else {
112 // Have to use a conservative value in this case.
113 _can_be_statically_bound = false;
114 }
115
116 // Adjust the definition of this condition to be more useful:
117 // %%% take these conditions into account in vtable generation
118 if (!_can_be_statically_bound && h_m()->is_private())
119 _can_be_statically_bound = true;
120 if (_can_be_statically_bound && h_m()->is_abstract())
121 _can_be_statically_bound = false;
122
123 // generating _signature may allow GC and therefore move m.
124 // These fields are always filled in.
125 _name = env->get_symbol(h_m()->name());
126 _holder = env->get_instance_klass(h_m()->method_holder());
127 ciSymbol* sig_symbol = env->get_symbol(h_m()->signature());
128 constantPoolHandle cpool = h_m()->constants();
129 _signature = new (env->arena()) ciSignature(_holder, cpool, sig_symbol);
130 _method_data = NULL;
131 // Take a snapshot of these values, so they will be commensurate with the MDO.
132 if (ProfileInterpreter || TieredCompilation) {
133 int invcnt = h_m()->interpreter_invocation_count();
134 // if the value overflowed report it as max int
135 _interpreter_invocation_count = invcnt < 0 ? max_jint : invcnt ;
136 _interpreter_throwout_count = h_m()->interpreter_throwout_count();
137 } else {
138 _interpreter_invocation_count = 0;
139 _interpreter_throwout_count = 0;
140 }
141 if (_interpreter_invocation_count == 0)
142 _interpreter_invocation_count = 1;
143 _instructions_size = -1;
144 #ifdef ASSERT
145 if (ReplayCompiles) {
146 ciReplay::initialize(this);
147 }
148 #endif
149 }
150
151
152 // ------------------------------------------------------------------
153 // ciMethod::ciMethod
154 //
155 // Unloaded method.
156 ciMethod::ciMethod(ciInstanceKlass* holder,
157 ciSymbol* name,
158 ciSymbol* signature,
159 ciInstanceKlass* accessor) :
160 ciMetadata((Metadata*)NULL),
161 _name( name),
162 _holder( holder),
163 _intrinsic_id( vmIntrinsics::_none),
164 _liveness( NULL),
165 _can_be_statically_bound(false),
166 _method_blocks( NULL),
167 _method_data( NULL)
168 #if defined(COMPILER2) || defined(SHARK)
169 ,
170 _flow( NULL),
171 _bcea( NULL),
172 _instructions_size(-1)
173 #endif // COMPILER2 || SHARK
174 {
175 // Usually holder and accessor are the same type but in some cases
176 // the holder has the wrong class loader (e.g. invokedynamic call
177 // sites) so we pass the accessor.
178 _signature = new (CURRENT_ENV->arena()) ciSignature(accessor, constantPoolHandle(), signature);
179 }
180
181
182 // ------------------------------------------------------------------
183 // ciMethod::load_code
184 //
185 // Load the bytecodes and exception handler table for this method.
186 void ciMethod::load_code() {
187 VM_ENTRY_MARK;
188 assert(is_loaded(), "only loaded methods have code");
189
190 Method* me = get_Method();
191 Arena* arena = CURRENT_THREAD_ENV->arena();
192
193 // Load the bytecodes.
194 _code = (address)arena->Amalloc(code_size());
195 memcpy(_code, me->code_base(), code_size());
196
197 // Revert any breakpoint bytecodes in ci's copy
198 if (me->number_of_breakpoints() > 0) {
199 BreakpointInfo* bp = me->method_holder()->breakpoints();
200 for (; bp != NULL; bp = bp->next()) {
201 if (bp->match(me)) {
202 code_at_put(bp->bci(), bp->orig_bytecode());
203 }
204 }
205 }
206
207 // And load the exception table.
208 ExceptionTable exc_table(me);
209
210 // Allocate one extra spot in our list of exceptions. This
211 // last entry will be used to represent the possibility that
212 // an exception escapes the method. See ciExceptionHandlerStream
213 // for details.
214 _exception_handlers =
215 (ciExceptionHandler**)arena->Amalloc(sizeof(ciExceptionHandler*)
216 * (_handler_count + 1));
217 if (_handler_count > 0) {
218 for (int i=0; i<_handler_count; i++) {
219 _exception_handlers[i] = new (arena) ciExceptionHandler(
220 holder(),
221 /* start */ exc_table.start_pc(i),
222 /* limit */ exc_table.end_pc(i),
223 /* goto pc */ exc_table.handler_pc(i),
224 /* cp index */ exc_table.catch_type_index(i));
225 }
226 }
227
228 // Put an entry at the end of our list to represent the possibility
229 // of exceptional exit.
230 _exception_handlers[_handler_count] =
231 new (arena) ciExceptionHandler(holder(), 0, code_size(), -1, 0);
232
233 if (CIPrintMethodCodes) {
234 print_codes();
235 }
236 }
237
238
239 // ------------------------------------------------------------------
240 // ciMethod::has_linenumber_table
241 //
242 // length unknown until decompression
243 bool ciMethod::has_linenumber_table() const {
244 check_is_loaded();
245 VM_ENTRY_MARK;
246 return get_Method()->has_linenumber_table();
247 }
248
249
250 // ------------------------------------------------------------------
251 // ciMethod::compressed_linenumber_table
252 u_char* ciMethod::compressed_linenumber_table() const {
253 check_is_loaded();
254 VM_ENTRY_MARK;
255 return get_Method()->compressed_linenumber_table();
256 }
257
258
259 // ------------------------------------------------------------------
260 // ciMethod::line_number_from_bci
261 int ciMethod::line_number_from_bci(int bci) const {
262 check_is_loaded();
263 VM_ENTRY_MARK;
264 return get_Method()->line_number_from_bci(bci);
265 }
266
267
268 // ------------------------------------------------------------------
269 // ciMethod::vtable_index
270 //
271 // Get the position of this method's entry in the vtable, if any.
272 int ciMethod::vtable_index() {
273 check_is_loaded();
274 assert(holder()->is_linked(), "must be linked");
275 VM_ENTRY_MARK;
276 return get_Method()->vtable_index();
277 }
278
279
280 #ifdef SHARK
281 // ------------------------------------------------------------------
282 // ciMethod::itable_index
283 //
284 // Get the position of this method's entry in the itable, if any.
285 int ciMethod::itable_index() {
286 check_is_loaded();
287 assert(holder()->is_linked(), "must be linked");
288 VM_ENTRY_MARK;
289 Method* m = get_Method();
290 if (!m->has_itable_index())
291 return Method::nonvirtual_vtable_index;
292 return m->itable_index();
293 }
294 #endif // SHARK
295
296
297 // ------------------------------------------------------------------
298 // ciMethod::native_entry
299 //
300 // Get the address of this method's native code, if any.
301 address ciMethod::native_entry() {
302 check_is_loaded();
303 assert(flags().is_native(), "must be native method");
304 VM_ENTRY_MARK;
305 Method* method = get_Method();
306 address entry = method->native_function();
307 assert(entry != NULL, "must be valid entry point");
308 return entry;
309 }
310
311
312 // ------------------------------------------------------------------
313 // ciMethod::interpreter_entry
314 //
315 // Get the entry point for running this method in the interpreter.
316 address ciMethod::interpreter_entry() {
317 check_is_loaded();
318 VM_ENTRY_MARK;
319 methodHandle mh(THREAD, get_Method());
320 return Interpreter::entry_for_method(mh);
321 }
322
323
324 // ------------------------------------------------------------------
325 // ciMethod::uses_balanced_monitors
326 //
327 // Does this method use monitors in a strict stack-disciplined manner?
328 bool ciMethod::has_balanced_monitors() {
329 check_is_loaded();
330 if (_balanced_monitors) return true;
331
332 // Analyze the method to see if monitors are used properly.
333 VM_ENTRY_MARK;
334 methodHandle method(THREAD, get_Method());
335 assert(method->has_monitor_bytecodes(), "should have checked this");
336
337 // Check to see if a previous compilation computed the
338 // monitor-matching analysis.
339 if (method->guaranteed_monitor_matching()) {
340 _balanced_monitors = true;
341 return true;
342 }
343
344 {
345 EXCEPTION_MARK;
346 ResourceMark rm(THREAD);
347 GeneratePairingInfo gpi(method);
348 gpi.compute_map(CATCH);
349 if (!gpi.monitor_safe()) {
350 return false;
351 }
352 method->set_guaranteed_monitor_matching();
353 _balanced_monitors = true;
354 }
355 return true;
356 }
357
358
359 // ------------------------------------------------------------------
360 // ciMethod::get_flow_analysis
361 ciTypeFlow* ciMethod::get_flow_analysis() {
362 #if defined(COMPILER2) || defined(SHARK)
363 if (_flow == NULL) {
364 ciEnv* env = CURRENT_ENV;
365 _flow = new (env->arena()) ciTypeFlow(env, this);
366 _flow->do_flow();
367 }
368 return _flow;
369 #else // COMPILER2 || SHARK
370 ShouldNotReachHere();
371 return NULL;
372 #endif // COMPILER2 || SHARK
373 }
374
375
376 // ------------------------------------------------------------------
377 // ciMethod::get_osr_flow_analysis
378 ciTypeFlow* ciMethod::get_osr_flow_analysis(int osr_bci) {
379 #if defined(COMPILER2) || defined(SHARK)
380 // OSR entry points are always place after a call bytecode of some sort
381 assert(osr_bci >= 0, "must supply valid OSR entry point");
382 ciEnv* env = CURRENT_ENV;
383 ciTypeFlow* flow = new (env->arena()) ciTypeFlow(env, this, osr_bci);
384 flow->do_flow();
385 return flow;
386 #else // COMPILER2 || SHARK
387 ShouldNotReachHere();
388 return NULL;
389 #endif // COMPILER2 || SHARK
390 }
391
392 // ------------------------------------------------------------------
393 // ciMethod::raw_liveness_at_bci
394 //
395 // Which local variables are live at a specific bci?
396 MethodLivenessResult ciMethod::raw_liveness_at_bci(int bci) {
397 check_is_loaded();
398 if (_liveness == NULL) {
399 // Create the liveness analyzer.
400 Arena* arena = CURRENT_ENV->arena();
401 _liveness = new (arena) MethodLiveness(arena, this);
402 _liveness->compute_liveness();
403 }
404 return _liveness->get_liveness_at(bci);
405 }
406
407 // ------------------------------------------------------------------
408 // ciMethod::liveness_at_bci
409 //
410 // Which local variables are live at a specific bci? When debugging
411 // will return true for all locals in some cases to improve debug
412 // information.
413 MethodLivenessResult ciMethod::liveness_at_bci(int bci) {
414 MethodLivenessResult result = raw_liveness_at_bci(bci);
415 if (CURRENT_ENV->jvmti_can_access_local_variables() || DeoptimizeALot || CompileTheWorld) {
416 // Keep all locals live for the user's edification and amusement.
417 result.at_put_range(0, result.size(), true);
418 }
419 return result;
420 }
421
422 // ciMethod::live_local_oops_at_bci
423 //
424 // find all the live oops in the locals array for a particular bci
425 // Compute what the interpreter believes by using the interpreter
426 // oopmap generator. This is used as a double check during osr to
427 // guard against conservative result from MethodLiveness making us
428 // think a dead oop is live. MethodLiveness is conservative in the
429 // sense that it may consider locals to be live which cannot be live,
430 // like in the case where a local could contain an oop or a primitive
431 // along different paths. In that case the local must be dead when
432 // those paths merge. Since the interpreter's viewpoint is used when
433 // gc'ing an interpreter frame we need to use its viewpoint during
434 // OSR when loading the locals.
435
436 BitMap ciMethod::live_local_oops_at_bci(int bci) {
437 VM_ENTRY_MARK;
438 InterpreterOopMap mask;
439 OopMapCache::compute_one_oop_map(get_Method(), bci, &mask);
440 int mask_size = max_locals();
441 BitMap result(mask_size);
442 result.clear();
443 int i;
444 for (i = 0; i < mask_size ; i++ ) {
445 if (mask.is_oop(i)) result.set_bit(i);
446 }
447 return result;
448 }
449
450
451 #ifdef COMPILER1
452 // ------------------------------------------------------------------
453 // ciMethod::bci_block_start
454 //
455 // Marks all bcis where a new basic block starts
456 const BitMap ciMethod::bci_block_start() {
457 check_is_loaded();
458 if (_liveness == NULL) {
459 // Create the liveness analyzer.
460 Arena* arena = CURRENT_ENV->arena();
461 _liveness = new (arena) MethodLiveness(arena, this);
462 _liveness->compute_liveness();
463 }
464
465 return _liveness->get_bci_block_start();
466 }
467 #endif // COMPILER1
468
469
470 // ------------------------------------------------------------------
471 // ciMethod::call_profile_at_bci
472 //
473 // Get the ciCallProfile for the invocation of this method.
474 // Also reports receiver types for non-call type checks (if TypeProfileCasts).
475 ciCallProfile ciMethod::call_profile_at_bci(int bci) {
476 ResourceMark rm;
477 ciCallProfile result;
478 if (method_data() != NULL && method_data()->is_mature()) {
479 ciProfileData* data = method_data()->bci_to_data(bci);
480 if (data != NULL && data->is_CounterData()) {
481 // Every profiled call site has a counter.
482 int count = data->as_CounterData()->count();
483
484 if (!data->is_ReceiverTypeData()) {
485 result._receiver_count[0] = 0; // that's a definite zero
486 } else { // ReceiverTypeData is a subclass of CounterData
487 ciReceiverTypeData* call = (ciReceiverTypeData*)data->as_ReceiverTypeData();
488 // In addition, virtual call sites have receiver type information
489 int receivers_count_total = 0;
490 int morphism = 0;
491 // Precompute morphism for the possible fixup
492 for (uint i = 0; i < call->row_limit(); i++) {
493 ciKlass* receiver = call->receiver(i);
494 if (receiver == NULL) continue;
495 morphism++;
496 }
497 int epsilon = 0;
498 if (TieredCompilation && ProfileInterpreter) {
499 // Interpreter and C1 treat final and special invokes differently.
500 // C1 will record a type, whereas the interpreter will just
501 // increment the count. Detect this case.
502 if (morphism == 1 && count > 0) {
503 epsilon = count;
504 count = 0;
505 }
506 }
507 for (uint i = 0; i < call->row_limit(); i++) {
508 ciKlass* receiver = call->receiver(i);
509 if (receiver == NULL) continue;
510 int rcount = call->receiver_count(i) + epsilon;
511 if (rcount == 0) rcount = 1; // Should be valid value
512 receivers_count_total += rcount;
513 // Add the receiver to result data.
514 result.add_receiver(receiver, rcount);
515 // If we extend profiling to record methods,
516 // we will set result._method also.
517 }
518 // Determine call site's morphism.
519 // The call site count is 0 with known morphism (onlt 1 or 2 receivers)
520 // or < 0 in the case of a type check failured for checkcast, aastore, instanceof.
521 // The call site count is > 0 in the case of a polymorphic virtual call.
522 if (morphism > 0 && morphism == result._limit) {
523 // The morphism <= MorphismLimit.
524 if ((morphism < ciCallProfile::MorphismLimit) ||
525 (morphism == ciCallProfile::MorphismLimit && count == 0)) {
526 #ifdef ASSERT
527 if (count > 0) {
528 this->print_short_name(tty);
529 tty->print_cr(" @ bci:%d", bci);
530 this->print_codes();
531 assert(false, "this call site should not be polymorphic");
532 }
533 #endif
534 result._morphism = morphism;
535 }
536 }
537 // Make the count consistent if this is a call profile. If count is
538 // zero or less, presume that this is a typecheck profile and
539 // do nothing. Otherwise, increase count to be the sum of all
540 // receiver's counts.
541 if (count >= 0) {
542 count += receivers_count_total;
543 }
544 }
545 result._count = count;
546 }
547 }
548 return result;
549 }
550
551 // ------------------------------------------------------------------
552 // Add new receiver and sort data by receiver's profile count.
553 void ciCallProfile::add_receiver(ciKlass* receiver, int receiver_count) {
554 // Add new receiver and sort data by receiver's counts when we have space
555 // for it otherwise replace the less called receiver (less called receiver
556 // is placed to the last array element which is not used).
557 // First array's element contains most called receiver.
558 int i = _limit;
559 for (; i > 0 && receiver_count > _receiver_count[i-1]; i--) {
560 _receiver[i] = _receiver[i-1];
561 _receiver_count[i] = _receiver_count[i-1];
562 }
563 _receiver[i] = receiver;
564 _receiver_count[i] = receiver_count;
565 if (_limit < MorphismLimit) _limit++;
566 }
567
568 // Return true if profiling provides a type for the argument nb to the
569 // call at bci. type is the profiled type.
570 // If the profile reports that the argument may be null, return false
571 // at least for now.
572 bool ciMethod::argument_profiled_type(int bci, int nb, ciKlass*& type) {
573 if (MethodData::profile_parameters() && method_data() != NULL && method_data()->is_mature()) {
574 ciProfileData* data = method_data()->bci_to_data(bci);
575 if (data != NULL) {
576 if (data->is_VirtualCallTypeData()) {
577 assert(java_code_at_bci(bci) == Bytecodes::_invokevirtual ||
578 java_code_at_bci(bci) == Bytecodes::_invokeinterface, "unexpected bytecode");
579 ciVirtualCallTypeData* call = (ciVirtualCallTypeData*)data->as_VirtualCallTypeData();
580 if (nb >= call->number_of_arguments()) {
581 return false;
582 }
583 type = call->valid_argument_type(nb);
584 if (type != NULL && !call->argument_maybe_null(nb)) {
585 return true;
586 }
587 } else if (data->is_CallTypeData()) {
588 assert(java_code_at_bci(bci) == Bytecodes::_invokestatic ||
589 java_code_at_bci(bci) == Bytecodes::_invokespecial ||
590 java_code_at_bci(bci) == Bytecodes::_invokedynamic, "unexpected bytecode");
591 ciCallTypeData* call = (ciCallTypeData*)data->as_CallTypeData();
592 if (nb >= call->number_of_arguments()) {
593 return false;
594 }
595 type = call->valid_argument_type(nb);
596 if (type != NULL && !call->argument_maybe_null(nb)) {
597 return true;
598 }
599 }
600 }
601 }
602 return false;
603 }
604
605 // Return true if profiling provides a type for the return value from
606 // the call at bci. type is the profiled type.
607 // If the profile reports that the argument may be null, return false
608 // at least for now.
609 bool ciMethod::return_profiled_type(int bci, ciKlass*& type) {
610 if (MethodData::profile_return() && method_data() != NULL && method_data()->is_mature()) {
611 ciProfileData* data = method_data()->bci_to_data(bci);
612 if (data != NULL) {
613 if (data->is_VirtualCallTypeData()) {
614 assert(java_code_at_bci(bci) == Bytecodes::_invokevirtual ||
615 java_code_at_bci(bci) == Bytecodes::_invokeinterface, "unexpected bytecode");
616 ciVirtualCallTypeData* call = (ciVirtualCallTypeData*)data->as_VirtualCallTypeData();
617 type = call->valid_return_type();
618 if (type != NULL && !call->return_maybe_null()) {
619 return true;
620 }
621 } else if (data->is_CallTypeData()) {
622 assert(java_code_at_bci(bci) == Bytecodes::_invokestatic ||
623 java_code_at_bci(bci) == Bytecodes::_invokespecial ||
624 java_code_at_bci(bci) == Bytecodes::_invokedynamic, "unexpected bytecode");
625 ciCallTypeData* call = (ciCallTypeData*)data->as_CallTypeData();
626 type = call->valid_return_type();
627 if (type != NULL && !call->return_maybe_null()) {
628 return true;
629 }
630 }
631 }
632 }
633 return false;
634 }
635
636 // Return true if profiling provides a type for the parameter nb to
637 // this method. type is the profiled type.
638 // If the profile reports that the argument may be null, return false
639 // at least for now.
640 bool ciMethod::parameter_profiled_type(int nb, ciKlass*& type) {
641 if (MethodData::profile_parameters() && method_data() != NULL && method_data()->is_mature()) {
642 ciParametersTypeData* parameters = method_data()->parameters_type_data();
643 if (parameters != NULL && nb < parameters->number_of_parameters()) {
644 type = parameters->valid_parameter_type(nb);
645 if (type != NULL && !parameters->parameter_maybe_null(nb)) {
646 return true;
647 }
648 }
649 }
650 return false;
651 }
652
653
654 // ------------------------------------------------------------------
655 // ciMethod::find_monomorphic_target
656 //
657 // Given a certain calling environment, find the monomorphic target
658 // for the call. Return NULL if the call is not monomorphic in
659 // its calling environment, or if there are only abstract methods.
660 // The returned method is never abstract.
661 // Note: If caller uses a non-null result, it must inform dependencies
662 // via assert_unique_concrete_method or assert_leaf_type.
663 ciMethod* ciMethod::find_monomorphic_target(ciInstanceKlass* caller,
664 ciInstanceKlass* callee_holder,
665 ciInstanceKlass* actual_recv) {
666 check_is_loaded();
667
668 if (actual_recv->is_interface()) {
669 // %%% We cannot trust interface types, yet. See bug 6312651.
670 return NULL;
671 }
672
673 ciMethod* root_m = resolve_invoke(caller, actual_recv);
674 if (root_m == NULL) {
675 // Something went wrong looking up the actual receiver method.
676 return NULL;
677 }
678 assert(!root_m->is_abstract(), "resolve_invoke promise");
679
680 // Make certain quick checks even if UseCHA is false.
681
682 // Is it private or final?
683 if (root_m->can_be_statically_bound()) {
684 return root_m;
685 }
686
687 if (actual_recv->is_leaf_type() && actual_recv == root_m->holder()) {
688 // Easy case. There is no other place to put a method, so don't bother
689 // to go through the VM_ENTRY_MARK and all the rest.
690 return root_m;
691 }
692
693 // Array methods (clone, hashCode, etc.) are always statically bound.
694 // If we were to see an array type here, we'd return root_m.
695 // However, this method processes only ciInstanceKlasses. (See 4962591.)
696 // The inline_native_clone intrinsic narrows Object to T[] properly,
697 // so there is no need to do the same job here.
698
699 if (!UseCHA) return NULL;
700
701 VM_ENTRY_MARK;
702
703 methodHandle target;
704 {
705 MutexLocker locker(Compile_lock);
706 Klass* context = actual_recv->get_Klass();
707 target = Dependencies::find_unique_concrete_method(context,
708 root_m->get_Method());
709 // %%% Should upgrade this ciMethod API to look for 1 or 2 concrete methods.
710 }
711
712 #ifndef PRODUCT
713 if (TraceDependencies && target() != NULL && target() != root_m->get_Method()) {
714 tty->print("found a non-root unique target method");
715 tty->print_cr(" context = %s", InstanceKlass::cast(actual_recv->get_Klass())->external_name());
716 tty->print(" method = ");
717 target->print_short_name(tty);
718 tty->cr();
719 }
720 #endif //PRODUCT
721
722 if (target() == NULL) {
723 return NULL;
724 }
725 if (target() == root_m->get_Method()) {
726 return root_m;
727 }
728 if (!root_m->is_public() &&
729 !root_m->is_protected()) {
730 // If we are going to reason about inheritance, it's easiest
731 // if the method in question is public, protected, or private.
732 // If the answer is not root_m, it is conservatively correct
733 // to return NULL, even if the CHA encountered irrelevant
734 // methods in other packages.
735 // %%% TO DO: Work out logic for package-private methods
736 // with the same name but different vtable indexes.
737 return NULL;
738 }
739 return CURRENT_THREAD_ENV->get_method(target());
740 }
741
742 // ------------------------------------------------------------------
743 // ciMethod::resolve_invoke
744 //
745 // Given a known receiver klass, find the target for the call.
746 // Return NULL if the call has no target or the target is abstract.
747 ciMethod* ciMethod::resolve_invoke(ciKlass* caller, ciKlass* exact_receiver) {
748 check_is_loaded();
749 VM_ENTRY_MARK;
750
751 KlassHandle caller_klass (THREAD, caller->get_Klass());
752 KlassHandle h_recv (THREAD, exact_receiver->get_Klass());
753 KlassHandle h_resolved (THREAD, holder()->get_Klass());
754 Symbol* h_name = name()->get_symbol();
755 Symbol* h_signature = signature()->get_symbol();
756
757 methodHandle m;
758 // Only do exact lookup if receiver klass has been linked. Otherwise,
759 // the vtable has not been setup, and the LinkResolver will fail.
760 if (h_recv->oop_is_array()
761 ||
762 InstanceKlass::cast(h_recv())->is_linked() && !exact_receiver->is_interface()) {
763 if (holder()->is_interface()) {
764 m = LinkResolver::resolve_interface_call_or_null(h_recv, h_resolved, h_name, h_signature, caller_klass);
765 } else {
766 m = LinkResolver::resolve_virtual_call_or_null(h_recv, h_resolved, h_name, h_signature, caller_klass);
767 }
768 }
769
770 if (m.is_null()) {
771 // Return NULL only if there was a problem with lookup (uninitialized class, etc.)
772 return NULL;
773 }
774
775 ciMethod* result = this;
776 if (m() != get_Method()) {
777 result = CURRENT_THREAD_ENV->get_method(m());
778 }
779
780 // Don't return abstract methods because they aren't
781 // optimizable or interesting.
782 if (result->is_abstract()) {
783 return NULL;
784 } else {
785 return result;
786 }
787 }
788
789 // ------------------------------------------------------------------
790 // ciMethod::resolve_vtable_index
791 //
792 // Given a known receiver klass, find the vtable index for the call.
793 // Return Method::invalid_vtable_index if the vtable_index is unknown.
794 int ciMethod::resolve_vtable_index(ciKlass* caller, ciKlass* receiver) {
795 check_is_loaded();
796
797 int vtable_index = Method::invalid_vtable_index;
798 // Only do lookup if receiver klass has been linked. Otherwise,
799 // the vtable has not been setup, and the LinkResolver will fail.
800 if (!receiver->is_interface()
801 && (!receiver->is_instance_klass() ||
802 receiver->as_instance_klass()->is_linked())) {
803 VM_ENTRY_MARK;
804
805 KlassHandle caller_klass (THREAD, caller->get_Klass());
806 KlassHandle h_recv (THREAD, receiver->get_Klass());
807 Symbol* h_name = name()->get_symbol();
808 Symbol* h_signature = signature()->get_symbol();
809
810 vtable_index = LinkResolver::resolve_virtual_vtable_index(h_recv, h_recv, h_name, h_signature, caller_klass);
811 if (vtable_index == Method::nonvirtual_vtable_index) {
812 // A statically bound method. Return "no such index".
813 vtable_index = Method::invalid_vtable_index;
814 }
815 }
816
817 return vtable_index;
818 }
819
820 // ------------------------------------------------------------------
821 // ciMethod::interpreter_call_site_count
822 int ciMethod::interpreter_call_site_count(int bci) {
823 if (method_data() != NULL) {
824 ResourceMark rm;
825 ciProfileData* data = method_data()->bci_to_data(bci);
826 if (data != NULL && data->is_CounterData()) {
827 return scale_count(data->as_CounterData()->count());
828 }
829 }
830 return -1; // unknown
831 }
832
833 // ------------------------------------------------------------------
834 // ciMethod::get_field_at_bci
835 ciField* ciMethod::get_field_at_bci(int bci, bool &will_link) {
836 ciBytecodeStream iter(this);
837 iter.reset_to_bci(bci);
838 iter.next();
839 return iter.get_field(will_link);
840 }
841
842 // ------------------------------------------------------------------
843 // ciMethod::get_method_at_bci
844 ciMethod* ciMethod::get_method_at_bci(int bci, bool &will_link, ciSignature* *declared_signature) {
845 ciBytecodeStream iter(this);
846 iter.reset_to_bci(bci);
847 iter.next();
848 return iter.get_method(will_link, declared_signature);
849 }
850
851 // ------------------------------------------------------------------
852 // Adjust a CounterData count to be commensurate with
853 // interpreter_invocation_count. If the MDO exists for
854 // only 25% of the time the method exists, then the
855 // counts in the MDO should be scaled by 4X, so that
856 // they can be usefully and stably compared against the
857 // invocation counts in methods.
858 int ciMethod::scale_count(int count, float prof_factor) {
859 if (count > 0 && method_data() != NULL) {
860 int counter_life;
861 int method_life = interpreter_invocation_count();
862 if (TieredCompilation) {
863 // In tiered the MDO's life is measured directly, so just use the snapshotted counters
864 counter_life = MAX2(method_data()->invocation_count(), method_data()->backedge_count());
865 } else {
866 int current_mileage = method_data()->current_mileage();
867 int creation_mileage = method_data()->creation_mileage();
868 counter_life = current_mileage - creation_mileage;
869 }
870
871 // counter_life due to backedge_counter could be > method_life
872 if (counter_life > method_life)
873 counter_life = method_life;
874 if (0 < counter_life && counter_life <= method_life) {
875 count = (int)((double)count * prof_factor * method_life / counter_life + 0.5);
876 count = (count > 0) ? count : 1;
877 }
878 }
879 return count;
880 }
881
882
883 // ------------------------------------------------------------------
884 // ciMethod::is_special_get_caller_class_method
885 //
886 bool ciMethod::is_ignored_by_security_stack_walk() const {
887 check_is_loaded();
888 VM_ENTRY_MARK;
889 return get_Method()->is_ignored_by_security_stack_walk();
890 }
891
892
893 // ------------------------------------------------------------------
894 // invokedynamic support
895
896 // ------------------------------------------------------------------
897 // ciMethod::is_method_handle_intrinsic
898 //
899 // Return true if the method is an instance of the JVM-generated
900 // signature-polymorphic MethodHandle methods, _invokeBasic, _linkToVirtual, etc.
901 bool ciMethod::is_method_handle_intrinsic() const {
902 vmIntrinsics::ID iid = _intrinsic_id; // do not check if loaded
903 return (MethodHandles::is_signature_polymorphic(iid) &&
904 MethodHandles::is_signature_polymorphic_intrinsic(iid));
905 }
906
907 // ------------------------------------------------------------------
908 // ciMethod::is_compiled_lambda_form
909 //
910 // Return true if the method is a generated MethodHandle adapter.
911 // These are built by Java code.
912 bool ciMethod::is_compiled_lambda_form() const {
913 vmIntrinsics::ID iid = _intrinsic_id; // do not check if loaded
914 return iid == vmIntrinsics::_compiledLambdaForm;
915 }
916
917 // ------------------------------------------------------------------
918 // ciMethod::has_member_arg
919 //
920 // Return true if the method is a linker intrinsic like _linkToVirtual.
921 // These are built by the JVM.
922 bool ciMethod::has_member_arg() const {
923 vmIntrinsics::ID iid = _intrinsic_id; // do not check if loaded
924 return (MethodHandles::is_signature_polymorphic(iid) &&
925 MethodHandles::has_member_arg(iid));
926 }
927
928 // ------------------------------------------------------------------
929 // ciMethod::ensure_method_data
930 //
931 // Generate new MethodData* objects at compile time.
932 // Return true if allocation was successful or no MDO is required.
933 bool ciMethod::ensure_method_data(methodHandle h_m) {
934 EXCEPTION_CONTEXT;
935 if (is_native() || is_abstract() || h_m()->is_accessor()) {
936 return true;
937 }
938 if (h_m()->method_data() == NULL) {
939 Method::build_interpreter_method_data(h_m, THREAD);
940 if (HAS_PENDING_EXCEPTION) {
941 CLEAR_PENDING_EXCEPTION;
942 }
943 }
944 if (h_m()->method_data() != NULL) {
945 _method_data = CURRENT_ENV->get_method_data(h_m()->method_data());
946 _method_data->load_data();
947 return true;
948 } else {
949 _method_data = CURRENT_ENV->get_empty_methodData();
950 return false;
951 }
952 }
953
954 // public, retroactive version
955 bool ciMethod::ensure_method_data() {
956 bool result = true;
957 if (_method_data == NULL || _method_data->is_empty()) {
958 GUARDED_VM_ENTRY({
959 result = ensure_method_data(get_Method());
960 });
961 }
962 return result;
963 }
964
965
966 // ------------------------------------------------------------------
967 // ciMethod::method_data
968 //
969 ciMethodData* ciMethod::method_data() {
970 if (_method_data != NULL) {
971 return _method_data;
972 }
973 VM_ENTRY_MARK;
974 ciEnv* env = CURRENT_ENV;
975 Thread* my_thread = JavaThread::current();
976 methodHandle h_m(my_thread, get_Method());
977
978 if (h_m()->method_data() != NULL) {
979 _method_data = CURRENT_ENV->get_method_data(h_m()->method_data());
980 _method_data->load_data();
981 } else {
982 _method_data = CURRENT_ENV->get_empty_methodData();
983 }
984 return _method_data;
985
986 }
987
988 // ------------------------------------------------------------------
989 // ciMethod::method_data_or_null
990 // Returns a pointer to ciMethodData if MDO exists on the VM side,
991 // NULL otherwise.
992 ciMethodData* ciMethod::method_data_or_null() {
993 ciMethodData *md = method_data();
994 if (md->is_empty()) {
995 return NULL;
996 }
997 return md;
998 }
999
1000 // ------------------------------------------------------------------
1001 // ciMethod::ensure_method_counters
1002 //
1003 MethodCounters* ciMethod::ensure_method_counters() {
1004 check_is_loaded();
1005 VM_ENTRY_MARK;
1006 methodHandle mh(THREAD, get_Method());
1007 MethodCounters* method_counters = mh->get_method_counters(CHECK_NULL);
1008 return method_counters;
1009 }
1010
1011 // ------------------------------------------------------------------
1012 // ciMethod::should_exclude
1013 //
1014 // Should this method be excluded from compilation?
1015 bool ciMethod::should_exclude() {
1016 check_is_loaded();
1017 VM_ENTRY_MARK;
1018 methodHandle mh(THREAD, get_Method());
1019 bool ignore;
1020 return CompilerOracle::should_exclude(mh, ignore);
1021 }
1022
1023 // ------------------------------------------------------------------
1024 // ciMethod::should_inline
1025 //
1026 // Should this method be inlined during compilation?
1027 bool ciMethod::should_inline() {
1028 check_is_loaded();
1029 VM_ENTRY_MARK;
1030 methodHandle mh(THREAD, get_Method());
1031 return CompilerOracle::should_inline(mh);
1032 }
1033
1034 // ------------------------------------------------------------------
1035 // ciMethod::should_not_inline
1036 //
1037 // Should this method be disallowed from inlining during compilation?
1038 bool ciMethod::should_not_inline() {
1039 check_is_loaded();
1040 VM_ENTRY_MARK;
1041 methodHandle mh(THREAD, get_Method());
1042 return CompilerOracle::should_not_inline(mh);
1043 }
1044
1045 // ------------------------------------------------------------------
1046 // ciMethod::should_print_assembly
1047 //
1048 // Should the compiler print the generated code for this method?
1049 bool ciMethod::should_print_assembly() {
1050 check_is_loaded();
1051 VM_ENTRY_MARK;
1052 methodHandle mh(THREAD, get_Method());
1053 return CompilerOracle::should_print(mh);
1054 }
1055
1056 // ------------------------------------------------------------------
1057 // ciMethod::break_at_execute
1058 //
1059 // Should the compiler insert a breakpoint into the generated code
1060 // method?
1061 bool ciMethod::break_at_execute() {
1062 check_is_loaded();
1063 VM_ENTRY_MARK;
1064 methodHandle mh(THREAD, get_Method());
1065 return CompilerOracle::should_break_at(mh);
1066 }
1067
1068 // ------------------------------------------------------------------
1069 // ciMethod::has_option
1070 //
1071 bool ciMethod::has_option(const char* option) {
1072 check_is_loaded();
1073 VM_ENTRY_MARK;
1074 methodHandle mh(THREAD, get_Method());
1075 return CompilerOracle::has_option_string(mh, option);
1076 }
1077
1078 // ------------------------------------------------------------------
1079 // ciMethod::can_be_compiled
1080 //
1081 // Have previous compilations of this method succeeded?
1082 bool ciMethod::can_be_compiled() {
1083 check_is_loaded();
1084 ciEnv* env = CURRENT_ENV;
1085 if (is_c1_compile(env->comp_level())) {
1086 return _is_c1_compilable;
1087 }
1088 return _is_c2_compilable;
1089 }
1090
1091 // ------------------------------------------------------------------
1092 // ciMethod::set_not_compilable
1093 //
1094 // Tell the VM that this method cannot be compiled at all.
1095 void ciMethod::set_not_compilable(const char* reason) {
1096 check_is_loaded();
1097 VM_ENTRY_MARK;
1098 ciEnv* env = CURRENT_ENV;
1099 if (is_c1_compile(env->comp_level())) {
1100 _is_c1_compilable = false;
1101 } else {
1102 _is_c2_compilable = false;
1103 }
1104 get_Method()->set_not_compilable(env->comp_level(), true, reason);
1105 }
1106
1107 // ------------------------------------------------------------------
1108 // ciMethod::can_be_osr_compiled
1109 //
1110 // Have previous compilations of this method succeeded?
1111 //
1112 // Implementation note: the VM does not currently keep track
1113 // of failed OSR compilations per bci. The entry_bci parameter
1114 // is currently unused.
1115 bool ciMethod::can_be_osr_compiled(int entry_bci) {
1116 check_is_loaded();
1117 VM_ENTRY_MARK;
1118 ciEnv* env = CURRENT_ENV;
1119 return !get_Method()->is_not_osr_compilable(env->comp_level());
1120 }
1121
1122 // ------------------------------------------------------------------
1123 // ciMethod::has_compiled_code
1124 bool ciMethod::has_compiled_code() {
1125 return instructions_size() > 0;
1126 }
1127
1128 int ciMethod::comp_level() {
1129 check_is_loaded();
1130 VM_ENTRY_MARK;
1131 nmethod* nm = get_Method()->code();
1132 if (nm != NULL) return nm->comp_level();
1133 return 0;
1134 }
1135
1136 int ciMethod::highest_osr_comp_level() {
1137 check_is_loaded();
1138 VM_ENTRY_MARK;
1139 return get_Method()->highest_osr_comp_level();
1140 }
1141
1142 // ------------------------------------------------------------------
1143 // ciMethod::code_size_for_inlining
1144 //
1145 // Code size for inlining decisions. This method returns a code
1146 // size of 1 for methods which has the ForceInline annotation.
1147 int ciMethod::code_size_for_inlining() {
1148 check_is_loaded();
1149 if (get_Method()->force_inline()) {
1150 return 1;
1151 }
1152 return code_size();
1153 }
1154
1155 // ------------------------------------------------------------------
1156 // ciMethod::instructions_size
1157 //
1158 // This is a rough metric for "fat" methods, compared before inlining
1159 // with InlineSmallCode. The CodeBlob::code_size accessor includes
1160 // junk like exception handler, stubs, and constant table, which are
1161 // not highly relevant to an inlined method. So we use the more
1162 // specific accessor nmethod::insts_size.
1163 int ciMethod::instructions_size() {
1164 if (_instructions_size == -1) {
1165 GUARDED_VM_ENTRY(
1166 nmethod* code = get_Method()->code();
1167 if (code != NULL && (code->comp_level() == CompLevel_full_optimization)) {
1168 _instructions_size = code->insts_end() - code->verified_entry_point();
1169 } else {
1170 _instructions_size = 0;
1171 }
1172 );
1173 }
1174 return _instructions_size;
1175 }
1176
1177 // ------------------------------------------------------------------
1178 // ciMethod::log_nmethod_identity
1179 void ciMethod::log_nmethod_identity(xmlStream* log) {
1180 GUARDED_VM_ENTRY(
1181 nmethod* code = get_Method()->code();
1182 if (code != NULL) {
1183 code->log_identity(log);
1184 }
1185 )
1186 }
1187
1188 // ------------------------------------------------------------------
1189 // ciMethod::is_not_reached
1190 bool ciMethod::is_not_reached(int bci) {
1191 check_is_loaded();
1192 VM_ENTRY_MARK;
1193 return Interpreter::is_not_reached(
1194 methodHandle(THREAD, get_Method()), bci);
1195 }
1196
1197 // ------------------------------------------------------------------
1198 // ciMethod::was_never_executed
1199 bool ciMethod::was_executed_more_than(int times) {
1200 VM_ENTRY_MARK;
1201 return get_Method()->was_executed_more_than(times);
1202 }
1203
1204 // ------------------------------------------------------------------
1205 // ciMethod::has_unloaded_classes_in_signature
1206 bool ciMethod::has_unloaded_classes_in_signature() {
1207 VM_ENTRY_MARK;
1208 {
1209 EXCEPTION_MARK;
1210 methodHandle m(THREAD, get_Method());
1211 bool has_unloaded = Method::has_unloaded_classes_in_signature(m, (JavaThread *)THREAD);
1212 if( HAS_PENDING_EXCEPTION ) {
1213 CLEAR_PENDING_EXCEPTION;
1214 return true; // Declare that we may have unloaded classes
1215 }
1216 return has_unloaded;
1217 }
1218 }
1219
1220 // ------------------------------------------------------------------
1221 // ciMethod::is_klass_loaded
1222 bool ciMethod::is_klass_loaded(int refinfo_index, bool must_be_resolved) const {
1223 VM_ENTRY_MARK;
1224 return get_Method()->is_klass_loaded(refinfo_index, must_be_resolved);
1225 }
1226
1227 // ------------------------------------------------------------------
1228 // ciMethod::check_call
1229 bool ciMethod::check_call(int refinfo_index, bool is_static) const {
1230 // This method is used only in C2 from InlineTree::ok_to_inline,
1231 // and is only used under -Xcomp or -XX:CompileTheWorld.
1232 // It appears to fail when applied to an invokeinterface call site.
1233 // FIXME: Remove this method and resolve_method_statically; refactor to use the other LinkResolver entry points.
1234 VM_ENTRY_MARK;
1235 {
1236 EXCEPTION_MARK;
1237 HandleMark hm(THREAD);
1238 constantPoolHandle pool (THREAD, get_Method()->constants());
1239 methodHandle spec_method;
1240 KlassHandle spec_klass;
1241 Bytecodes::Code code = (is_static ? Bytecodes::_invokestatic : Bytecodes::_invokevirtual);
1242 LinkResolver::resolve_method_statically(spec_method, spec_klass, code, pool, refinfo_index, THREAD);
1243 if (HAS_PENDING_EXCEPTION) {
1244 CLEAR_PENDING_EXCEPTION;
1245 return false;
1246 } else {
1247 return (spec_method->is_static() == is_static);
1248 }
1249 }
1250 return false;
1251 }
1252
1253 // ------------------------------------------------------------------
1254 // ciMethod::print_codes
1255 //
1256 // Print the bytecodes for this method.
1257 void ciMethod::print_codes_on(outputStream* st) {
1258 check_is_loaded();
1259 GUARDED_VM_ENTRY(get_Method()->print_codes_on(st);)
1260 }
1261
1262
1263 #define FETCH_FLAG_FROM_VM(flag_accessor) { \
1264 check_is_loaded(); \
1265 VM_ENTRY_MARK; \
1266 return get_Method()->flag_accessor(); \
1267 }
1268
1269 bool ciMethod::is_empty_method() const { FETCH_FLAG_FROM_VM(is_empty_method); }
1270 bool ciMethod::is_vanilla_constructor() const { FETCH_FLAG_FROM_VM(is_vanilla_constructor); }
1271 bool ciMethod::has_loops () const { FETCH_FLAG_FROM_VM(has_loops); }
1272 bool ciMethod::has_jsrs () const { FETCH_FLAG_FROM_VM(has_jsrs); }
1273 bool ciMethod::is_accessor () const { FETCH_FLAG_FROM_VM(is_accessor); }
1274 bool ciMethod::is_initializer () const { FETCH_FLAG_FROM_VM(is_initializer); }
1275
1276 bool ciMethod::is_boxing_method() const {
1277 if (holder()->is_box_klass()) {
1278 switch (intrinsic_id()) {
1279 case vmIntrinsics::_Boolean_valueOf:
1280 case vmIntrinsics::_Byte_valueOf:
1281 case vmIntrinsics::_Character_valueOf:
1282 case vmIntrinsics::_Short_valueOf:
1283 case vmIntrinsics::_Integer_valueOf:
1284 case vmIntrinsics::_Long_valueOf:
1285 case vmIntrinsics::_Float_valueOf:
1286 case vmIntrinsics::_Double_valueOf:
1287 return true;
1288 default:
1289 return false;
1290 }
1291 }
1292 return false;
1293 }
1294
1295 bool ciMethod::is_unboxing_method() const {
1296 if (holder()->is_box_klass()) {
1297 switch (intrinsic_id()) {
1298 case vmIntrinsics::_booleanValue:
1299 case vmIntrinsics::_byteValue:
1300 case vmIntrinsics::_charValue:
1301 case vmIntrinsics::_shortValue:
1302 case vmIntrinsics::_intValue:
1303 case vmIntrinsics::_longValue:
1304 case vmIntrinsics::_floatValue:
1305 case vmIntrinsics::_doubleValue:
1306 return true;
1307 default:
1308 return false;
1309 }
1310 }
1311 return false;
1312 }
1313
1314 BCEscapeAnalyzer *ciMethod::get_bcea() {
1315 #ifdef COMPILER2
1316 if (_bcea == NULL) {
1317 _bcea = new (CURRENT_ENV->arena()) BCEscapeAnalyzer(this, NULL);
1318 }
1319 return _bcea;
1320 #else // COMPILER2
1321 ShouldNotReachHere();
1322 return NULL;
1323 #endif // COMPILER2
1324 }
1325
1326 ciMethodBlocks *ciMethod::get_method_blocks() {
1327 Arena *arena = CURRENT_ENV->arena();
1328 if (_method_blocks == NULL) {
1329 _method_blocks = new (arena) ciMethodBlocks(arena, this);
1330 }
1331 return _method_blocks;
1332 }
1333
1334 #undef FETCH_FLAG_FROM_VM
1335
1336 void ciMethod::dump_replay_data(outputStream* st) {
1337 ResourceMark rm;
1338 Method* method = get_Method();
1339 MethodCounters* mcs = method->method_counters();
1340 Klass* holder = method->method_holder();
1341 st->print_cr("ciMethod %s %s %s %d %d %d %d %d",
1342 holder->name()->as_quoted_ascii(),
1343 method->name()->as_quoted_ascii(),
1344 method->signature()->as_quoted_ascii(),
1345 mcs == NULL ? 0 : mcs->invocation_counter()->raw_counter(),
1346 mcs == NULL ? 0 : mcs->backedge_counter()->raw_counter(),
1347 interpreter_invocation_count(),
1348 interpreter_throwout_count(),
1349 _instructions_size);
1350 }
1351
1352 // ------------------------------------------------------------------
1353 // ciMethod::print_codes
1354 //
1355 // Print a range of the bytecodes for this method.
1356 void ciMethod::print_codes_on(int from, int to, outputStream* st) {
1357 check_is_loaded();
1358 GUARDED_VM_ENTRY(get_Method()->print_codes_on(from, to, st);)
1359 }
1360
1361 // ------------------------------------------------------------------
1362 // ciMethod::print_name
1363 //
1364 // Print the name of this method, including signature and some flags.
1365 void ciMethod::print_name(outputStream* st) {
1366 check_is_loaded();
1367 GUARDED_VM_ENTRY(get_Method()->print_name(st);)
1368 }
1369
1370 // ------------------------------------------------------------------
1371 // ciMethod::print_short_name
1372 //
1373 // Print the name of this method, without signature.
1374 void ciMethod::print_short_name(outputStream* st) {
1375 if (is_loaded()) {
1376 GUARDED_VM_ENTRY(get_Method()->print_short_name(st););
1377 } else {
1378 // Fall back if method is not loaded.
1379 holder()->print_name_on(st);
1380 st->print("::");
1381 name()->print_symbol_on(st);
1382 if (WizardMode)
1383 signature()->as_symbol()->print_symbol_on(st);
1384 }
1385 }
1386
1387 // ------------------------------------------------------------------
1388 // ciMethod::print_impl
1389 //
1390 // Implementation of the print method.
1391 void ciMethod::print_impl(outputStream* st) {
1392 ciMetadata::print_impl(st);
1393 st->print(" name=");
1394 name()->print_symbol_on(st);
1395 st->print(" holder=");
1396 holder()->print_name_on(st);
1397 st->print(" signature=");
1398 signature()->as_symbol()->print_symbol_on(st);
1399 if (is_loaded()) {
1400 st->print(" loaded=true");
1401 st->print(" arg_size=%d", arg_size());
1402 st->print(" flags=");
1403 flags().print_member_flags(st);
1404 } else {
1405 st->print(" loaded=false");
1406 }
1407 }