Mercurial > hg > truffle
annotate src/share/vm/ci/ciMethod.cpp @ 6653:2d5407ae1ac4
intermediate materialization is now removed during lowering of an InstanceOfNode that has a single usage which is an IfNode in the same block
lowered InstanceOfNode snippet graph is shared among similar usages of the InstanceOfNode
author | Doug Simon <doug.simon@oracle.com> |
---|---|
date | Tue, 30 Oct 2012 23:58:53 +0100 |
parents | c38f13903fdf |
children | e522a00b91aa |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 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/ciMethodKlass.hpp" | |
33 #include "ci/ciStreams.hpp" | |
34 #include "ci/ciSymbol.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/methodOop.hpp" | |
55 #endif | |
56 #ifdef SHARK | |
57 #include "ci/ciTypeFlow.hpp" | |
58 #include "oops/methodOop.hpp" | |
59 #endif | |
0 | 60 |
61 // ciMethod | |
62 // | |
63 // This class represents a methodOop in the HotSpot virtual | |
64 // machine. | |
65 | |
66 | |
67 // ------------------------------------------------------------------ | |
68 // ciMethod::ciMethod | |
69 // | |
70 // Loaded method. | |
71 ciMethod::ciMethod(methodHandle h_m) : ciObject(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(); | |
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82 _handler_count = h_m()->exception_table_length(); |
0 | 83 _uses_monitors = h_m()->access_flags().has_monitor_bytecodes(); |
84 _balanced_monitors = !_uses_monitors || h_m()->access_flags().is_monitor_matching(); | |
1783 | 85 _is_c1_compilable = !h_m()->is_not_c1_compilable(); |
86 _is_c2_compilable = !h_m()->is_not_c2_compilable(); | |
0 | 87 // Lazy fields, filled in on demand. Require allocation. |
88 _code = NULL; | |
89 _exception_handlers = NULL; | |
90 _liveness = NULL; | |
91 _method_blocks = NULL; | |
1692 | 92 #if defined(COMPILER2) || defined(SHARK) |
0 | 93 _flow = NULL; |
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94 _bcea = NULL; |
1692 | 95 #endif // COMPILER2 || SHARK |
0 | 96 |
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97 ciEnv *env = CURRENT_ENV; |
1783 | 98 if (env->jvmti_can_hotswap_or_post_breakpoint() && can_be_compiled()) { |
0 | 99 // 6328518 check hotswap conditions under the right lock. |
100 MutexLocker locker(Compile_lock); | |
101 if (Dependencies::check_evol_method(h_m()) != NULL) { | |
1783 | 102 _is_c1_compilable = false; |
103 _is_c2_compilable = false; | |
0 | 104 } |
105 } else { | |
106 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); | |
107 } | |
108 | |
109 if (instanceKlass::cast(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. | |
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125 _name = env->get_symbol(h_m()->name()); |
0 | 126 _holder = env->get_object(h_m()->method_holder())->as_instance_klass(); |
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127 ciSymbol* sig_symbol = env->get_symbol(h_m()->signature()); |
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128 constantPoolHandle cpool = h_m()->constants(); |
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129 _signature = new (env->arena()) ciSignature(_holder, cpool, sig_symbol); |
0 | 130 _method_data = NULL; |
131 // Take a snapshot of these values, so they will be commensurate with the MDO. | |
1783 | 132 if (ProfileInterpreter || TieredCompilation) { |
0 | 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 } | |
144 | |
145 | |
146 // ------------------------------------------------------------------ | |
147 // ciMethod::ciMethod | |
148 // | |
149 // Unloaded method. | |
150 ciMethod::ciMethod(ciInstanceKlass* holder, | |
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151 ciSymbol* name, |
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152 ciSymbol* signature, |
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153 ciInstanceKlass* accessor) : |
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154 ciObject(ciMethodKlass::make()), |
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155 _name( name), |
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156 _holder( holder), |
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157 _intrinsic_id( vmIntrinsics::_none), |
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158 _liveness( NULL), |
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159 _can_be_statically_bound(false), |
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160 _method_blocks( NULL), |
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161 _method_data( NULL) |
1692 | 162 #if defined(COMPILER2) || defined(SHARK) |
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163 , |
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164 _flow( NULL), |
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165 _bcea( NULL) |
1692 | 166 #endif // COMPILER2 || SHARK |
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167 { |
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168 // Usually holder and accessor are the same type but in some cases |
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169 // the holder has the wrong class loader (e.g. invokedynamic call |
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170 // sites) so we pass the accessor. |
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171 _signature = new (CURRENT_ENV->arena()) ciSignature(accessor, constantPoolHandle(), signature); |
0 | 172 } |
173 | |
174 | |
175 // ------------------------------------------------------------------ | |
176 // ciMethod::load_code | |
177 // | |
178 // Load the bytecodes and exception handler table for this method. | |
179 void ciMethod::load_code() { | |
180 VM_ENTRY_MARK; | |
181 assert(is_loaded(), "only loaded methods have code"); | |
182 | |
183 methodOop me = get_methodOop(); | |
184 Arena* arena = CURRENT_THREAD_ENV->arena(); | |
185 | |
186 // Load the bytecodes. | |
187 _code = (address)arena->Amalloc(code_size()); | |
188 memcpy(_code, me->code_base(), code_size()); | |
189 | |
190 // Revert any breakpoint bytecodes in ci's copy | |
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191 if (me->number_of_breakpoints() > 0) { |
0 | 192 BreakpointInfo* bp = instanceKlass::cast(me->method_holder())->breakpoints(); |
193 for (; bp != NULL; bp = bp->next()) { | |
194 if (bp->match(me)) { | |
195 code_at_put(bp->bci(), bp->orig_bytecode()); | |
196 } | |
197 } | |
198 } | |
199 | |
200 // And load the exception table. | |
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201 ExceptionTable exc_table(me); |
0 | 202 |
203 // Allocate one extra spot in our list of exceptions. This | |
204 // last entry will be used to represent the possibility that | |
205 // an exception escapes the method. See ciExceptionHandlerStream | |
206 // for details. | |
207 _exception_handlers = | |
208 (ciExceptionHandler**)arena->Amalloc(sizeof(ciExceptionHandler*) | |
209 * (_handler_count + 1)); | |
210 if (_handler_count > 0) { | |
211 for (int i=0; i<_handler_count; i++) { | |
212 _exception_handlers[i] = new (arena) ciExceptionHandler( | |
213 holder(), | |
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214 /* start */ exc_table.start_pc(i), |
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215 /* limit */ exc_table.end_pc(i), |
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216 /* goto pc */ exc_table.handler_pc(i), |
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217 /* cp index */ exc_table.catch_type_index(i)); |
0 | 218 } |
219 } | |
220 | |
221 // Put an entry at the end of our list to represent the possibility | |
222 // of exceptional exit. | |
223 _exception_handlers[_handler_count] = | |
224 new (arena) ciExceptionHandler(holder(), 0, code_size(), -1, 0); | |
225 | |
226 if (CIPrintMethodCodes) { | |
227 print_codes(); | |
228 } | |
229 } | |
230 | |
231 | |
232 // ------------------------------------------------------------------ | |
233 // ciMethod::has_linenumber_table | |
234 // | |
235 // length unknown until decompression | |
236 bool ciMethod::has_linenumber_table() const { | |
237 check_is_loaded(); | |
238 VM_ENTRY_MARK; | |
239 return get_methodOop()->has_linenumber_table(); | |
240 } | |
241 | |
242 | |
243 // ------------------------------------------------------------------ | |
244 // ciMethod::compressed_linenumber_table | |
245 u_char* ciMethod::compressed_linenumber_table() const { | |
246 check_is_loaded(); | |
247 VM_ENTRY_MARK; | |
248 return get_methodOop()->compressed_linenumber_table(); | |
249 } | |
250 | |
251 | |
252 // ------------------------------------------------------------------ | |
253 // ciMethod::line_number_from_bci | |
254 int ciMethod::line_number_from_bci(int bci) const { | |
255 check_is_loaded(); | |
256 VM_ENTRY_MARK; | |
257 return get_methodOop()->line_number_from_bci(bci); | |
258 } | |
259 | |
260 | |
261 // ------------------------------------------------------------------ | |
262 // ciMethod::vtable_index | |
263 // | |
264 // Get the position of this method's entry in the vtable, if any. | |
265 int ciMethod::vtable_index() { | |
266 check_is_loaded(); | |
267 assert(holder()->is_linked(), "must be linked"); | |
268 VM_ENTRY_MARK; | |
269 return get_methodOop()->vtable_index(); | |
270 } | |
271 | |
272 | |
1692 | 273 #ifdef SHARK |
274 // ------------------------------------------------------------------ | |
275 // ciMethod::itable_index | |
276 // | |
277 // Get the position of this method's entry in the itable, if any. | |
278 int ciMethod::itable_index() { | |
279 check_is_loaded(); | |
280 assert(holder()->is_linked(), "must be linked"); | |
281 VM_ENTRY_MARK; | |
282 return klassItable::compute_itable_index(get_methodOop()); | |
283 } | |
284 #endif // SHARK | |
285 | |
286 | |
0 | 287 // ------------------------------------------------------------------ |
288 // ciMethod::native_entry | |
289 // | |
290 // Get the address of this method's native code, if any. | |
291 address ciMethod::native_entry() { | |
292 check_is_loaded(); | |
293 assert(flags().is_native(), "must be native method"); | |
294 VM_ENTRY_MARK; | |
295 methodOop method = get_methodOop(); | |
296 address entry = method->native_function(); | |
297 assert(entry != NULL, "must be valid entry point"); | |
298 return entry; | |
299 } | |
300 | |
301 | |
302 // ------------------------------------------------------------------ | |
303 // ciMethod::interpreter_entry | |
304 // | |
305 // Get the entry point for running this method in the interpreter. | |
306 address ciMethod::interpreter_entry() { | |
307 check_is_loaded(); | |
308 VM_ENTRY_MARK; | |
309 methodHandle mh(THREAD, get_methodOop()); | |
310 return Interpreter::entry_for_method(mh); | |
311 } | |
312 | |
313 | |
314 // ------------------------------------------------------------------ | |
315 // ciMethod::uses_balanced_monitors | |
316 // | |
317 // Does this method use monitors in a strict stack-disciplined manner? | |
318 bool ciMethod::has_balanced_monitors() { | |
319 check_is_loaded(); | |
320 if (_balanced_monitors) return true; | |
321 | |
322 // Analyze the method to see if monitors are used properly. | |
323 VM_ENTRY_MARK; | |
324 methodHandle method(THREAD, get_methodOop()); | |
325 assert(method->has_monitor_bytecodes(), "should have checked this"); | |
326 | |
327 // Check to see if a previous compilation computed the | |
328 // monitor-matching analysis. | |
329 if (method->guaranteed_monitor_matching()) { | |
330 _balanced_monitors = true; | |
331 return true; | |
332 } | |
333 | |
334 { | |
335 EXCEPTION_MARK; | |
336 ResourceMark rm(THREAD); | |
337 GeneratePairingInfo gpi(method); | |
338 gpi.compute_map(CATCH); | |
339 if (!gpi.monitor_safe()) { | |
340 return false; | |
341 } | |
342 method->set_guaranteed_monitor_matching(); | |
343 _balanced_monitors = true; | |
344 } | |
345 return true; | |
346 } | |
347 | |
348 | |
349 // ------------------------------------------------------------------ | |
350 // ciMethod::get_flow_analysis | |
351 ciTypeFlow* ciMethod::get_flow_analysis() { | |
1692 | 352 #if defined(COMPILER2) || defined(SHARK) |
0 | 353 if (_flow == NULL) { |
354 ciEnv* env = CURRENT_ENV; | |
355 _flow = new (env->arena()) ciTypeFlow(env, this); | |
356 _flow->do_flow(); | |
357 } | |
358 return _flow; | |
1692 | 359 #else // COMPILER2 || SHARK |
0 | 360 ShouldNotReachHere(); |
361 return NULL; | |
1692 | 362 #endif // COMPILER2 || SHARK |
0 | 363 } |
364 | |
365 | |
366 // ------------------------------------------------------------------ | |
367 // ciMethod::get_osr_flow_analysis | |
368 ciTypeFlow* ciMethod::get_osr_flow_analysis(int osr_bci) { | |
1692 | 369 #if defined(COMPILER2) || defined(SHARK) |
0 | 370 // OSR entry points are always place after a call bytecode of some sort |
371 assert(osr_bci >= 0, "must supply valid OSR entry point"); | |
372 ciEnv* env = CURRENT_ENV; | |
373 ciTypeFlow* flow = new (env->arena()) ciTypeFlow(env, this, osr_bci); | |
374 flow->do_flow(); | |
375 return flow; | |
1692 | 376 #else // COMPILER2 || SHARK |
0 | 377 ShouldNotReachHere(); |
378 return NULL; | |
1692 | 379 #endif // COMPILER2 || SHARK |
0 | 380 } |
381 | |
382 // ------------------------------------------------------------------ | |
991 | 383 // ciMethod::raw_liveness_at_bci |
0 | 384 // |
385 // Which local variables are live at a specific bci? | |
991 | 386 MethodLivenessResult ciMethod::raw_liveness_at_bci(int bci) { |
0 | 387 check_is_loaded(); |
388 if (_liveness == NULL) { | |
389 // Create the liveness analyzer. | |
390 Arena* arena = CURRENT_ENV->arena(); | |
391 _liveness = new (arena) MethodLiveness(arena, this); | |
392 _liveness->compute_liveness(); | |
393 } | |
991 | 394 return _liveness->get_liveness_at(bci); |
395 } | |
396 | |
397 // ------------------------------------------------------------------ | |
398 // ciMethod::liveness_at_bci | |
399 // | |
400 // Which local variables are live at a specific bci? When debugging | |
401 // will return true for all locals in some cases to improve debug | |
402 // information. | |
403 MethodLivenessResult ciMethod::liveness_at_bci(int bci) { | |
404 MethodLivenessResult result = raw_liveness_at_bci(bci); | |
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405 if (CURRENT_ENV->jvmti_can_access_local_variables() || DeoptimizeALot || CompileTheWorld) { |
0 | 406 // Keep all locals live for the user's edification and amusement. |
407 result.at_put_range(0, result.size(), true); | |
408 } | |
409 return result; | |
410 } | |
411 | |
412 // ciMethod::live_local_oops_at_bci | |
413 // | |
414 // find all the live oops in the locals array for a particular bci | |
415 // Compute what the interpreter believes by using the interpreter | |
416 // oopmap generator. This is used as a double check during osr to | |
417 // guard against conservative result from MethodLiveness making us | |
418 // think a dead oop is live. MethodLiveness is conservative in the | |
419 // sense that it may consider locals to be live which cannot be live, | |
420 // like in the case where a local could contain an oop or a primitive | |
421 // along different paths. In that case the local must be dead when | |
422 // those paths merge. Since the interpreter's viewpoint is used when | |
423 // gc'ing an interpreter frame we need to use its viewpoint during | |
424 // OSR when loading the locals. | |
425 | |
426 BitMap ciMethod::live_local_oops_at_bci(int bci) { | |
427 VM_ENTRY_MARK; | |
428 InterpreterOopMap mask; | |
429 OopMapCache::compute_one_oop_map(get_methodOop(), bci, &mask); | |
430 int mask_size = max_locals(); | |
431 BitMap result(mask_size); | |
432 result.clear(); | |
433 int i; | |
434 for (i = 0; i < mask_size ; i++ ) { | |
435 if (mask.is_oop(i)) result.set_bit(i); | |
436 } | |
437 return result; | |
438 } | |
439 | |
440 | |
441 #ifdef COMPILER1 | |
442 // ------------------------------------------------------------------ | |
443 // ciMethod::bci_block_start | |
444 // | |
445 // Marks all bcis where a new basic block starts | |
446 const BitMap ciMethod::bci_block_start() { | |
447 check_is_loaded(); | |
448 if (_liveness == NULL) { | |
449 // Create the liveness analyzer. | |
450 Arena* arena = CURRENT_ENV->arena(); | |
451 _liveness = new (arena) MethodLiveness(arena, this); | |
452 _liveness->compute_liveness(); | |
453 } | |
454 | |
455 return _liveness->get_bci_block_start(); | |
456 } | |
457 #endif // COMPILER1 | |
458 | |
459 | |
460 // ------------------------------------------------------------------ | |
461 // ciMethod::call_profile_at_bci | |
462 // | |
463 // Get the ciCallProfile for the invocation of this method. | |
464 // Also reports receiver types for non-call type checks (if TypeProfileCasts). | |
465 ciCallProfile ciMethod::call_profile_at_bci(int bci) { | |
466 ResourceMark rm; | |
467 ciCallProfile result; | |
468 if (method_data() != NULL && method_data()->is_mature()) { | |
469 ciProfileData* data = method_data()->bci_to_data(bci); | |
470 if (data != NULL && data->is_CounterData()) { | |
471 // Every profiled call site has a counter. | |
472 int count = data->as_CounterData()->count(); | |
473 | |
474 if (!data->is_ReceiverTypeData()) { | |
475 result._receiver_count[0] = 0; // that's a definite zero | |
476 } else { // ReceiverTypeData is a subclass of CounterData | |
477 ciReceiverTypeData* call = (ciReceiverTypeData*)data->as_ReceiverTypeData(); | |
478 // In addition, virtual call sites have receiver type information | |
479 int receivers_count_total = 0; | |
480 int morphism = 0; | |
1783 | 481 // Precompute morphism for the possible fixup |
0 | 482 for (uint i = 0; i < call->row_limit(); i++) { |
483 ciKlass* receiver = call->receiver(i); | |
484 if (receiver == NULL) continue; | |
1783 | 485 morphism++; |
486 } | |
487 int epsilon = 0; | |
488 if (TieredCompilation && ProfileInterpreter) { | |
489 // Interpreter and C1 treat final and special invokes differently. | |
490 // C1 will record a type, whereas the interpreter will just | |
491 // increment the count. Detect this case. | |
492 if (morphism == 1 && count > 0) { | |
493 epsilon = count; | |
494 count = 0; | |
495 } | |
496 } | |
497 for (uint i = 0; i < call->row_limit(); i++) { | |
498 ciKlass* receiver = call->receiver(i); | |
499 if (receiver == NULL) continue; | |
500 int rcount = call->receiver_count(i) + epsilon; | |
0 | 501 if (rcount == 0) rcount = 1; // Should be valid value |
502 receivers_count_total += rcount; | |
503 // Add the receiver to result data. | |
504 result.add_receiver(receiver, rcount); | |
505 // If we extend profiling to record methods, | |
506 // we will set result._method also. | |
507 } | |
508 // Determine call site's morphism. | |
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509 // The call site count is 0 with known morphism (onlt 1 or 2 receivers) |
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510 // or < 0 in the case of a type check failured for checkcast, aastore, instanceof. |
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511 // The call site count is > 0 in the case of a polymorphic virtual call. |
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512 if (morphism > 0 && morphism == result._limit) { |
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513 // The morphism <= MorphismLimit. |
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514 if ((morphism < ciCallProfile::MorphismLimit) || |
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515 (morphism == ciCallProfile::MorphismLimit && count == 0)) { |
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516 #ifdef ASSERT |
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517 if (count > 0) { |
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518 this->print_short_name(tty); |
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519 tty->print_cr(" @ bci:%d", bci); |
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520 this->print_codes(); |
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521 assert(false, "this call site should not be polymorphic"); |
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522 } |
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523 #endif |
0 | 524 result._morphism = morphism; |
525 } | |
526 } | |
527 // Make the count consistent if this is a call profile. If count is | |
528 // zero or less, presume that this is a typecheck profile and | |
529 // do nothing. Otherwise, increase count to be the sum of all | |
530 // receiver's counts. | |
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531 if (count >= 0) { |
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532 count += receivers_count_total; |
0 | 533 } |
534 } | |
535 result._count = count; | |
536 } | |
537 } | |
538 return result; | |
539 } | |
540 | |
541 // ------------------------------------------------------------------ | |
542 // Add new receiver and sort data by receiver's profile count. | |
543 void ciCallProfile::add_receiver(ciKlass* receiver, int receiver_count) { | |
544 // Add new receiver and sort data by receiver's counts when we have space | |
545 // for it otherwise replace the less called receiver (less called receiver | |
546 // is placed to the last array element which is not used). | |
547 // First array's element contains most called receiver. | |
548 int i = _limit; | |
549 for (; i > 0 && receiver_count > _receiver_count[i-1]; i--) { | |
550 _receiver[i] = _receiver[i-1]; | |
551 _receiver_count[i] = _receiver_count[i-1]; | |
552 } | |
553 _receiver[i] = receiver; | |
554 _receiver_count[i] = receiver_count; | |
555 if (_limit < MorphismLimit) _limit++; | |
556 } | |
557 | |
558 // ------------------------------------------------------------------ | |
559 // ciMethod::find_monomorphic_target | |
560 // | |
561 // Given a certain calling environment, find the monomorphic target | |
562 // for the call. Return NULL if the call is not monomorphic in | |
563 // its calling environment, or if there are only abstract methods. | |
564 // The returned method is never abstract. | |
565 // Note: If caller uses a non-null result, it must inform dependencies | |
566 // via assert_unique_concrete_method or assert_leaf_type. | |
567 ciMethod* ciMethod::find_monomorphic_target(ciInstanceKlass* caller, | |
568 ciInstanceKlass* callee_holder, | |
569 ciInstanceKlass* actual_recv) { | |
570 check_is_loaded(); | |
571 | |
572 if (actual_recv->is_interface()) { | |
573 // %%% We cannot trust interface types, yet. See bug 6312651. | |
574 return NULL; | |
575 } | |
576 | |
577 ciMethod* root_m = resolve_invoke(caller, actual_recv); | |
578 if (root_m == NULL) { | |
579 // Something went wrong looking up the actual receiver method. | |
580 return NULL; | |
581 } | |
582 assert(!root_m->is_abstract(), "resolve_invoke promise"); | |
583 | |
584 // Make certain quick checks even if UseCHA is false. | |
585 | |
586 // Is it private or final? | |
587 if (root_m->can_be_statically_bound()) { | |
588 return root_m; | |
589 } | |
590 | |
591 if (actual_recv->is_leaf_type() && actual_recv == root_m->holder()) { | |
592 // Easy case. There is no other place to put a method, so don't bother | |
593 // to go through the VM_ENTRY_MARK and all the rest. | |
594 return root_m; | |
595 } | |
596 | |
597 // Array methods (clone, hashCode, etc.) are always statically bound. | |
598 // If we were to see an array type here, we'd return root_m. | |
599 // However, this method processes only ciInstanceKlasses. (See 4962591.) | |
600 // The inline_native_clone intrinsic narrows Object to T[] properly, | |
601 // so there is no need to do the same job here. | |
602 | |
603 if (!UseCHA) return NULL; | |
604 | |
605 VM_ENTRY_MARK; | |
606 | |
607 methodHandle target; | |
608 { | |
609 MutexLocker locker(Compile_lock); | |
610 klassOop context = actual_recv->get_klassOop(); | |
611 target = Dependencies::find_unique_concrete_method(context, | |
612 root_m->get_methodOop()); | |
613 // %%% Should upgrade this ciMethod API to look for 1 or 2 concrete methods. | |
614 } | |
615 | |
616 #ifndef PRODUCT | |
617 if (TraceDependencies && target() != NULL && target() != root_m->get_methodOop()) { | |
618 tty->print("found a non-root unique target method"); | |
619 tty->print_cr(" context = %s", instanceKlass::cast(actual_recv->get_klassOop())->external_name()); | |
620 tty->print(" method = "); | |
621 target->print_short_name(tty); | |
622 tty->cr(); | |
623 } | |
624 #endif //PRODUCT | |
625 | |
626 if (target() == NULL) { | |
627 return NULL; | |
628 } | |
629 if (target() == root_m->get_methodOop()) { | |
630 return root_m; | |
631 } | |
632 if (!root_m->is_public() && | |
633 !root_m->is_protected()) { | |
634 // If we are going to reason about inheritance, it's easiest | |
635 // if the method in question is public, protected, or private. | |
636 // If the answer is not root_m, it is conservatively correct | |
637 // to return NULL, even if the CHA encountered irrelevant | |
638 // methods in other packages. | |
639 // %%% TO DO: Work out logic for package-private methods | |
640 // with the same name but different vtable indexes. | |
641 return NULL; | |
642 } | |
643 return CURRENT_THREAD_ENV->get_object(target())->as_method(); | |
644 } | |
645 | |
646 // ------------------------------------------------------------------ | |
647 // ciMethod::resolve_invoke | |
648 // | |
649 // Given a known receiver klass, find the target for the call. | |
650 // Return NULL if the call has no target or the target is abstract. | |
651 ciMethod* ciMethod::resolve_invoke(ciKlass* caller, ciKlass* exact_receiver) { | |
652 check_is_loaded(); | |
653 VM_ENTRY_MARK; | |
654 | |
655 KlassHandle caller_klass (THREAD, caller->get_klassOop()); | |
656 KlassHandle h_recv (THREAD, exact_receiver->get_klassOop()); | |
657 KlassHandle h_resolved (THREAD, holder()->get_klassOop()); | |
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658 Symbol* h_name = name()->get_symbol(); |
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659 Symbol* h_signature = signature()->get_symbol(); |
0 | 660 |
661 methodHandle m; | |
662 // Only do exact lookup if receiver klass has been linked. Otherwise, | |
663 // the vtable has not been setup, and the LinkResolver will fail. | |
664 if (h_recv->oop_is_javaArray() | |
665 || | |
666 instanceKlass::cast(h_recv())->is_linked() && !exact_receiver->is_interface()) { | |
667 if (holder()->is_interface()) { | |
668 m = LinkResolver::resolve_interface_call_or_null(h_recv, h_resolved, h_name, h_signature, caller_klass); | |
669 } else { | |
670 m = LinkResolver::resolve_virtual_call_or_null(h_recv, h_resolved, h_name, h_signature, caller_klass); | |
671 } | |
672 } | |
673 | |
674 if (m.is_null()) { | |
675 // Return NULL only if there was a problem with lookup (uninitialized class, etc.) | |
676 return NULL; | |
677 } | |
678 | |
679 ciMethod* result = this; | |
680 if (m() != get_methodOop()) { | |
681 result = CURRENT_THREAD_ENV->get_object(m())->as_method(); | |
682 } | |
683 | |
684 // Don't return abstract methods because they aren't | |
685 // optimizable or interesting. | |
686 if (result->is_abstract()) { | |
687 return NULL; | |
688 } else { | |
689 return result; | |
690 } | |
691 } | |
692 | |
693 // ------------------------------------------------------------------ | |
694 // ciMethod::resolve_vtable_index | |
695 // | |
696 // Given a known receiver klass, find the vtable index for the call. | |
697 // Return methodOopDesc::invalid_vtable_index if the vtable_index is unknown. | |
698 int ciMethod::resolve_vtable_index(ciKlass* caller, ciKlass* receiver) { | |
699 check_is_loaded(); | |
700 | |
701 int vtable_index = methodOopDesc::invalid_vtable_index; | |
702 // Only do lookup if receiver klass has been linked. Otherwise, | |
703 // the vtable has not been setup, and the LinkResolver will fail. | |
704 if (!receiver->is_interface() | |
705 && (!receiver->is_instance_klass() || | |
706 receiver->as_instance_klass()->is_linked())) { | |
707 VM_ENTRY_MARK; | |
708 | |
709 KlassHandle caller_klass (THREAD, caller->get_klassOop()); | |
710 KlassHandle h_recv (THREAD, receiver->get_klassOop()); | |
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711 Symbol* h_name = name()->get_symbol(); |
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712 Symbol* h_signature = signature()->get_symbol(); |
0 | 713 |
714 vtable_index = LinkResolver::resolve_virtual_vtable_index(h_recv, h_recv, h_name, h_signature, caller_klass); | |
715 if (vtable_index == methodOopDesc::nonvirtual_vtable_index) { | |
716 // A statically bound method. Return "no such index". | |
717 vtable_index = methodOopDesc::invalid_vtable_index; | |
718 } | |
719 } | |
720 | |
721 return vtable_index; | |
722 } | |
723 | |
724 // ------------------------------------------------------------------ | |
725 // ciMethod::interpreter_call_site_count | |
726 int ciMethod::interpreter_call_site_count(int bci) { | |
727 if (method_data() != NULL) { | |
728 ResourceMark rm; | |
729 ciProfileData* data = method_data()->bci_to_data(bci); | |
730 if (data != NULL && data->is_CounterData()) { | |
731 return scale_count(data->as_CounterData()->count()); | |
732 } | |
733 } | |
734 return -1; // unknown | |
735 } | |
736 | |
737 // ------------------------------------------------------------------ | |
738 // Adjust a CounterData count to be commensurate with | |
739 // interpreter_invocation_count. If the MDO exists for | |
740 // only 25% of the time the method exists, then the | |
741 // counts in the MDO should be scaled by 4X, so that | |
742 // they can be usefully and stably compared against the | |
743 // invocation counts in methods. | |
744 int ciMethod::scale_count(int count, float prof_factor) { | |
745 if (count > 0 && method_data() != NULL) { | |
1783 | 746 int counter_life; |
0 | 747 int method_life = interpreter_invocation_count(); |
1783 | 748 if (TieredCompilation) { |
749 // In tiered the MDO's life is measured directly, so just use the snapshotted counters | |
750 counter_life = MAX2(method_data()->invocation_count(), method_data()->backedge_count()); | |
751 } else { | |
752 int current_mileage = method_data()->current_mileage(); | |
753 int creation_mileage = method_data()->creation_mileage(); | |
754 counter_life = current_mileage - creation_mileage; | |
755 } | |
756 | |
0 | 757 // counter_life due to backedge_counter could be > method_life |
758 if (counter_life > method_life) | |
759 counter_life = method_life; | |
760 if (0 < counter_life && counter_life <= method_life) { | |
761 count = (int)((double)count * prof_factor * method_life / counter_life + 0.5); | |
762 count = (count > 0) ? count : 1; | |
763 } | |
764 } | |
765 return count; | |
766 } | |
767 | |
768 // ------------------------------------------------------------------ | |
710 | 769 // invokedynamic support |
1564 | 770 |
771 // ------------------------------------------------------------------ | |
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772 // ciMethod::is_method_handle_intrinsic |
710 | 773 // |
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774 // Return true if the method is an instance of the JVM-generated |
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775 // signature-polymorphic MethodHandle methods, _invokeBasic, _linkToVirtual, etc. |
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776 bool ciMethod::is_method_handle_intrinsic() const { |
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777 vmIntrinsics::ID iid = _intrinsic_id; // do not check if loaded |
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778 return (MethodHandles::is_signature_polymorphic(iid) && |
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779 MethodHandles::is_signature_polymorphic_intrinsic(iid)); |
710 | 780 } |
781 | |
1564 | 782 // ------------------------------------------------------------------ |
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783 // ciMethod::is_compiled_lambda_form |
1564 | 784 // |
785 // Return true if the method is a generated MethodHandle adapter. | |
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786 // These are built by Java code. |
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787 bool ciMethod::is_compiled_lambda_form() const { |
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788 vmIntrinsics::ID iid = _intrinsic_id; // do not check if loaded |
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789 return iid == vmIntrinsics::_compiledLambdaForm; |
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790 } |
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791 |
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792 // ------------------------------------------------------------------ |
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793 // ciMethod::has_member_arg |
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794 // |
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795 // Return true if the method is a linker intrinsic like _linkToVirtual. |
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796 // These are built by the JVM. |
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797 bool ciMethod::has_member_arg() const { |
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798 vmIntrinsics::ID iid = _intrinsic_id; // do not check if loaded |
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799 return (MethodHandles::is_signature_polymorphic(iid) && |
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800 MethodHandles::has_member_arg(iid)); |
710 | 801 } |
802 | |
803 // ------------------------------------------------------------------ | |
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804 // ciMethod::ensure_method_data |
0 | 805 // |
806 // Generate new methodDataOop objects at compile time. | |
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807 // Return true if allocation was successful or no MDO is required. |
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808 bool ciMethod::ensure_method_data(methodHandle h_m) { |
0 | 809 EXCEPTION_CONTEXT; |
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810 if (is_native() || is_abstract() || h_m()->is_accessor()) return true; |
0 | 811 if (h_m()->method_data() == NULL) { |
812 methodOopDesc::build_interpreter_method_data(h_m, THREAD); | |
813 if (HAS_PENDING_EXCEPTION) { | |
814 CLEAR_PENDING_EXCEPTION; | |
815 } | |
816 } | |
817 if (h_m()->method_data() != NULL) { | |
818 _method_data = CURRENT_ENV->get_object(h_m()->method_data())->as_method_data(); | |
819 _method_data->load_data(); | |
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820 return true; |
0 | 821 } else { |
822 _method_data = CURRENT_ENV->get_empty_methodData(); | |
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823 return false; |
0 | 824 } |
825 } | |
826 | |
827 // public, retroactive version | |
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828 bool ciMethod::ensure_method_data() { |
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829 bool result = true; |
0 | 830 if (_method_data == NULL || _method_data->is_empty()) { |
831 GUARDED_VM_ENTRY({ | |
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832 result = ensure_method_data(get_methodOop()); |
0 | 833 }); |
834 } | |
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835 return result; |
0 | 836 } |
837 | |
838 | |
839 // ------------------------------------------------------------------ | |
840 // ciMethod::method_data | |
841 // | |
842 ciMethodData* ciMethod::method_data() { | |
843 if (_method_data != NULL) { | |
844 return _method_data; | |
845 } | |
846 VM_ENTRY_MARK; | |
847 ciEnv* env = CURRENT_ENV; | |
848 Thread* my_thread = JavaThread::current(); | |
849 methodHandle h_m(my_thread, get_methodOop()); | |
850 | |
851 if (h_m()->method_data() != NULL) { | |
852 _method_data = CURRENT_ENV->get_object(h_m()->method_data())->as_method_data(); | |
853 _method_data->load_data(); | |
854 } else { | |
855 _method_data = CURRENT_ENV->get_empty_methodData(); | |
856 } | |
857 return _method_data; | |
858 | |
859 } | |
860 | |
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861 // ------------------------------------------------------------------ |
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862 // ciMethod::method_data_or_null |
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863 // Returns a pointer to ciMethodData if MDO exists on the VM side, |
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864 // NULL otherwise. |
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865 ciMethodData* ciMethod::method_data_or_null() { |
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866 ciMethodData *md = method_data(); |
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867 if (md->is_empty()) return NULL; |
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868 return md; |
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869 } |
0 | 870 |
871 // ------------------------------------------------------------------ | |
872 // ciMethod::will_link | |
873 // | |
874 // Will this method link in a specific calling context? | |
875 bool ciMethod::will_link(ciKlass* accessing_klass, | |
876 ciKlass* declared_method_holder, | |
877 Bytecodes::Code bc) { | |
878 if (!is_loaded()) { | |
879 // Method lookup failed. | |
880 return false; | |
881 } | |
882 | |
883 // The link checks have been front-loaded into the get_method | |
884 // call. This method (ciMethod::will_link()) will be removed | |
885 // in the future. | |
886 | |
887 return true; | |
888 } | |
889 | |
890 // ------------------------------------------------------------------ | |
891 // ciMethod::should_exclude | |
892 // | |
893 // Should this method be excluded from compilation? | |
894 bool ciMethod::should_exclude() { | |
895 check_is_loaded(); | |
896 VM_ENTRY_MARK; | |
897 methodHandle mh(THREAD, get_methodOop()); | |
898 bool ignore; | |
899 return CompilerOracle::should_exclude(mh, ignore); | |
900 } | |
901 | |
902 // ------------------------------------------------------------------ | |
903 // ciMethod::should_inline | |
904 // | |
905 // Should this method be inlined during compilation? | |
906 bool ciMethod::should_inline() { | |
907 check_is_loaded(); | |
908 VM_ENTRY_MARK; | |
909 methodHandle mh(THREAD, get_methodOop()); | |
910 return CompilerOracle::should_inline(mh); | |
911 } | |
912 | |
913 // ------------------------------------------------------------------ | |
914 // ciMethod::should_not_inline | |
915 // | |
916 // Should this method be disallowed from inlining during compilation? | |
917 bool ciMethod::should_not_inline() { | |
918 check_is_loaded(); | |
919 VM_ENTRY_MARK; | |
920 methodHandle mh(THREAD, get_methodOop()); | |
921 return CompilerOracle::should_not_inline(mh); | |
922 } | |
923 | |
924 // ------------------------------------------------------------------ | |
925 // ciMethod::should_print_assembly | |
926 // | |
927 // Should the compiler print the generated code for this method? | |
928 bool ciMethod::should_print_assembly() { | |
929 check_is_loaded(); | |
930 VM_ENTRY_MARK; | |
931 methodHandle mh(THREAD, get_methodOop()); | |
932 return CompilerOracle::should_print(mh); | |
933 } | |
934 | |
935 // ------------------------------------------------------------------ | |
936 // ciMethod::break_at_execute | |
937 // | |
938 // Should the compiler insert a breakpoint into the generated code | |
939 // method? | |
940 bool ciMethod::break_at_execute() { | |
941 check_is_loaded(); | |
942 VM_ENTRY_MARK; | |
943 methodHandle mh(THREAD, get_methodOop()); | |
944 return CompilerOracle::should_break_at(mh); | |
945 } | |
946 | |
947 // ------------------------------------------------------------------ | |
948 // ciMethod::has_option | |
949 // | |
950 bool ciMethod::has_option(const char* option) { | |
951 check_is_loaded(); | |
952 VM_ENTRY_MARK; | |
953 methodHandle mh(THREAD, get_methodOop()); | |
954 return CompilerOracle::has_option_string(mh, option); | |
955 } | |
956 | |
957 // ------------------------------------------------------------------ | |
958 // ciMethod::can_be_compiled | |
959 // | |
960 // Have previous compilations of this method succeeded? | |
961 bool ciMethod::can_be_compiled() { | |
962 check_is_loaded(); | |
1783 | 963 ciEnv* env = CURRENT_ENV; |
964 if (is_c1_compile(env->comp_level())) { | |
965 return _is_c1_compilable; | |
966 } | |
967 return _is_c2_compilable; | |
0 | 968 } |
969 | |
970 // ------------------------------------------------------------------ | |
971 // ciMethod::set_not_compilable | |
972 // | |
973 // Tell the VM that this method cannot be compiled at all. | |
974 void ciMethod::set_not_compilable() { | |
975 check_is_loaded(); | |
976 VM_ENTRY_MARK; | |
1783 | 977 ciEnv* env = CURRENT_ENV; |
978 if (is_c1_compile(env->comp_level())) { | |
979 _is_c1_compilable = false; | |
980 } else { | |
981 _is_c2_compilable = false; | |
982 } | |
983 get_methodOop()->set_not_compilable(env->comp_level()); | |
0 | 984 } |
985 | |
986 // ------------------------------------------------------------------ | |
987 // ciMethod::can_be_osr_compiled | |
988 // | |
989 // Have previous compilations of this method succeeded? | |
990 // | |
991 // Implementation note: the VM does not currently keep track | |
992 // of failed OSR compilations per bci. The entry_bci parameter | |
993 // is currently unused. | |
994 bool ciMethod::can_be_osr_compiled(int entry_bci) { | |
995 check_is_loaded(); | |
996 VM_ENTRY_MARK; | |
1783 | 997 ciEnv* env = CURRENT_ENV; |
998 return !get_methodOop()->is_not_osr_compilable(env->comp_level()); | |
0 | 999 } |
1000 | |
1001 // ------------------------------------------------------------------ | |
1002 // ciMethod::has_compiled_code | |
1003 bool ciMethod::has_compiled_code() { | |
1004 VM_ENTRY_MARK; | |
1005 return get_methodOop()->code() != NULL; | |
1006 } | |
1007 | |
1783 | 1008 int ciMethod::comp_level() { |
1009 check_is_loaded(); | |
1010 VM_ENTRY_MARK; | |
1011 nmethod* nm = get_methodOop()->code(); | |
1012 if (nm != NULL) return nm->comp_level(); | |
1013 return 0; | |
1014 } | |
1015 | |
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1016 int ciMethod::highest_osr_comp_level() { |
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1017 check_is_loaded(); |
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1018 VM_ENTRY_MARK; |
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1019 return get_methodOop()->highest_osr_comp_level(); |
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1020 } |
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1021 |
0 | 1022 // ------------------------------------------------------------------ |
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1023 // ciMethod::code_size_for_inlining |
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1024 // |
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1025 // Code size for inlining decisions. This method returns a code |
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1026 // size of 1 for methods which has the ForceInline annotation. |
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1027 int ciMethod::code_size_for_inlining() { |
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1028 check_is_loaded(); |
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1029 if (get_methodOop()->force_inline()) { |
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1030 return 1; |
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1031 } |
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1032 return code_size(); |
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1033 } |
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1034 |
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1035 // ------------------------------------------------------------------ |
0 | 1036 // ciMethod::instructions_size |
1748 | 1037 // |
1038 // This is a rough metric for "fat" methods, compared before inlining | |
1039 // with InlineSmallCode. The CodeBlob::code_size accessor includes | |
1040 // junk like exception handler, stubs, and constant table, which are | |
1041 // not highly relevant to an inlined method. So we use the more | |
1042 // specific accessor nmethod::insts_size. | |
1783 | 1043 int ciMethod::instructions_size(int comp_level) { |
0 | 1044 GUARDED_VM_ENTRY( |
1045 nmethod* code = get_methodOop()->code(); | |
1783 | 1046 if (code != NULL && (comp_level == CompLevel_any || comp_level == code->comp_level())) { |
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1047 return code->insts_end() - code->verified_entry_point(); |
0 | 1048 } |
1783 | 1049 return 0; |
0 | 1050 ) |
1051 } | |
1052 | |
1053 // ------------------------------------------------------------------ | |
1054 // ciMethod::log_nmethod_identity | |
1055 void ciMethod::log_nmethod_identity(xmlStream* log) { | |
1056 GUARDED_VM_ENTRY( | |
1057 nmethod* code = get_methodOop()->code(); | |
1058 if (code != NULL) { | |
1059 code->log_identity(log); | |
1060 } | |
1061 ) | |
1062 } | |
1063 | |
1064 // ------------------------------------------------------------------ | |
1065 // ciMethod::is_not_reached | |
1066 bool ciMethod::is_not_reached(int bci) { | |
1067 check_is_loaded(); | |
1068 VM_ENTRY_MARK; | |
1069 return Interpreter::is_not_reached( | |
1070 methodHandle(THREAD, get_methodOop()), bci); | |
1071 } | |
1072 | |
1073 // ------------------------------------------------------------------ | |
1074 // ciMethod::was_never_executed | |
1075 bool ciMethod::was_executed_more_than(int times) { | |
1076 VM_ENTRY_MARK; | |
1077 return get_methodOop()->was_executed_more_than(times); | |
1078 } | |
1079 | |
1080 // ------------------------------------------------------------------ | |
1081 // ciMethod::has_unloaded_classes_in_signature | |
1082 bool ciMethod::has_unloaded_classes_in_signature() { | |
1083 VM_ENTRY_MARK; | |
1084 { | |
1085 EXCEPTION_MARK; | |
1086 methodHandle m(THREAD, get_methodOop()); | |
1087 bool has_unloaded = methodOopDesc::has_unloaded_classes_in_signature(m, (JavaThread *)THREAD); | |
1088 if( HAS_PENDING_EXCEPTION ) { | |
1089 CLEAR_PENDING_EXCEPTION; | |
1090 return true; // Declare that we may have unloaded classes | |
1091 } | |
1092 return has_unloaded; | |
1093 } | |
1094 } | |
1095 | |
1096 // ------------------------------------------------------------------ | |
1097 // ciMethod::is_klass_loaded | |
1098 bool ciMethod::is_klass_loaded(int refinfo_index, bool must_be_resolved) const { | |
1099 VM_ENTRY_MARK; | |
1100 return get_methodOop()->is_klass_loaded(refinfo_index, must_be_resolved); | |
1101 } | |
1102 | |
1103 // ------------------------------------------------------------------ | |
1104 // ciMethod::check_call | |
1105 bool ciMethod::check_call(int refinfo_index, bool is_static) const { | |
1106 VM_ENTRY_MARK; | |
1107 { | |
1108 EXCEPTION_MARK; | |
1109 HandleMark hm(THREAD); | |
1110 constantPoolHandle pool (THREAD, get_methodOop()->constants()); | |
1111 methodHandle spec_method; | |
1112 KlassHandle spec_klass; | |
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1113 Bytecodes::Code code = (is_static ? Bytecodes::_invokestatic : Bytecodes::_invokevirtual); |
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1114 LinkResolver::resolve_method_statically(spec_method, spec_klass, code, pool, refinfo_index, THREAD); |
0 | 1115 if (HAS_PENDING_EXCEPTION) { |
1116 CLEAR_PENDING_EXCEPTION; | |
1117 return false; | |
1118 } else { | |
1119 return (spec_method->is_static() == is_static); | |
1120 } | |
1121 } | |
1122 return false; | |
1123 } | |
1124 | |
1125 // ------------------------------------------------------------------ | |
1126 // ciMethod::print_codes | |
1127 // | |
1128 // Print the bytecodes for this method. | |
1129 void ciMethod::print_codes_on(outputStream* st) { | |
1130 check_is_loaded(); | |
1131 GUARDED_VM_ENTRY(get_methodOop()->print_codes_on(st);) | |
1132 } | |
1133 | |
1134 | |
1135 #define FETCH_FLAG_FROM_VM(flag_accessor) { \ | |
1136 check_is_loaded(); \ | |
1137 VM_ENTRY_MARK; \ | |
1138 return get_methodOop()->flag_accessor(); \ | |
1139 } | |
1140 | |
1141 bool ciMethod::is_empty_method() const { FETCH_FLAG_FROM_VM(is_empty_method); } | |
1142 bool ciMethod::is_vanilla_constructor() const { FETCH_FLAG_FROM_VM(is_vanilla_constructor); } | |
1143 bool ciMethod::has_loops () const { FETCH_FLAG_FROM_VM(has_loops); } | |
1144 bool ciMethod::has_jsrs () const { FETCH_FLAG_FROM_VM(has_jsrs); } | |
1145 bool ciMethod::is_accessor () const { FETCH_FLAG_FROM_VM(is_accessor); } | |
1146 bool ciMethod::is_initializer () const { FETCH_FLAG_FROM_VM(is_initializer); } | |
1147 | |
1148 BCEscapeAnalyzer *ciMethod::get_bcea() { | |
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1149 #ifdef COMPILER2 |
0 | 1150 if (_bcea == NULL) { |
1151 _bcea = new (CURRENT_ENV->arena()) BCEscapeAnalyzer(this, NULL); | |
1152 } | |
1153 return _bcea; | |
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1154 #else // COMPILER2 |
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1155 ShouldNotReachHere(); |
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1156 return NULL; |
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1157 #endif // COMPILER2 |
0 | 1158 } |
1159 | |
1160 ciMethodBlocks *ciMethod::get_method_blocks() { | |
1161 Arena *arena = CURRENT_ENV->arena(); | |
1162 if (_method_blocks == NULL) { | |
1163 _method_blocks = new (arena) ciMethodBlocks(arena, this); | |
1164 } | |
1165 return _method_blocks; | |
1166 } | |
1167 | |
1168 #undef FETCH_FLAG_FROM_VM | |
1169 | |
1170 | |
1171 // ------------------------------------------------------------------ | |
1172 // ciMethod::print_codes | |
1173 // | |
1174 // Print a range of the bytecodes for this method. | |
1175 void ciMethod::print_codes_on(int from, int to, outputStream* st) { | |
1176 check_is_loaded(); | |
1177 GUARDED_VM_ENTRY(get_methodOop()->print_codes_on(from, to, st);) | |
1178 } | |
1179 | |
1180 // ------------------------------------------------------------------ | |
1181 // ciMethod::print_name | |
1182 // | |
1183 // Print the name of this method, including signature and some flags. | |
1184 void ciMethod::print_name(outputStream* st) { | |
1185 check_is_loaded(); | |
1186 GUARDED_VM_ENTRY(get_methodOop()->print_name(st);) | |
1187 } | |
1188 | |
1189 // ------------------------------------------------------------------ | |
1190 // ciMethod::print_short_name | |
1191 // | |
1192 // Print the name of this method, without signature. | |
1193 void ciMethod::print_short_name(outputStream* st) { | |
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1194 if (is_loaded()) { |
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1195 GUARDED_VM_ENTRY(get_methodOop()->print_short_name(st);); |
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1196 } else { |
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1197 // Fall back if method is not loaded. |
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1198 holder()->print_name_on(st); |
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1199 st->print("::"); |
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1200 name()->print_symbol_on(st); |
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1201 if (WizardMode) |
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1202 signature()->as_symbol()->print_symbol_on(st); |
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1203 } |
0 | 1204 } |
1205 | |
1206 // ------------------------------------------------------------------ | |
1207 // ciMethod::print_impl | |
1208 // | |
1209 // Implementation of the print method. | |
1210 void ciMethod::print_impl(outputStream* st) { | |
1211 ciObject::print_impl(st); | |
1212 st->print(" name="); | |
1213 name()->print_symbol_on(st); | |
1214 st->print(" holder="); | |
1215 holder()->print_name_on(st); | |
1216 st->print(" signature="); | |
1217 signature()->as_symbol()->print_symbol_on(st); | |
1218 if (is_loaded()) { | |
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1219 st->print(" loaded=true"); |
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7192406: JSR 292: C2 needs exact return type information for invokedynamic and invokehandle call sites
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parents:
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changeset
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1220 st->print(" arg_size=%d", arg_size()); |
7f813940ac35
7192406: JSR 292: C2 needs exact return type information for invokedynamic and invokehandle call sites
twisti
parents:
6266
diff
changeset
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1221 st->print(" flags="); |
0 | 1222 flags().print_member_flags(st); |
1223 } else { | |
1224 st->print(" loaded=false"); | |
1225 } | |
1226 } |