annotate src/share/vm/ci/ciMethod.cpp @ 2563:2c359f27615c

7057120: Tiered: Allow C1 to inline methods with loops Summary: Recompile the enclosing methods without inlining of the method that has OSRed to level 4 or recompile the enclosing method at level 4. Reviewed-by: kvn, never
author iveresov
date Fri, 01 Jul 2011 10:37:37 -0700
parents ddd894528dbc
children de847cac9235
rev   line source
duke@0 1 /*
jrose@2212 2 * Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved.
duke@0 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@0 4 *
duke@0 5 * This code is free software; you can redistribute it and/or modify it
duke@0 6 * under the terms of the GNU General Public License version 2 only, as
duke@0 7 * published by the Free Software Foundation.
duke@0 8 *
duke@0 9 * This code is distributed in the hope that it will be useful, but WITHOUT
duke@0 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@0 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@0 12 * version 2 for more details (a copy is included in the LICENSE file that
duke@0 13 * accompanied this code).
duke@0 14 *
duke@0 15 * You should have received a copy of the GNU General Public License version
duke@0 16 * 2 along with this work; if not, write to the Free Software Foundation,
duke@0 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@0 18 *
trims@1472 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1472 20 * or visit www.oracle.com if you need additional information or have any
trims@1472 21 * questions.
duke@0 22 *
duke@0 23 */
duke@0 24
stefank@1885 25 #include "precompiled.hpp"
stefank@1885 26 #include "ci/ciCallProfile.hpp"
stefank@1885 27 #include "ci/ciExceptionHandler.hpp"
stefank@1885 28 #include "ci/ciInstanceKlass.hpp"
stefank@1885 29 #include "ci/ciMethod.hpp"
stefank@1885 30 #include "ci/ciMethodBlocks.hpp"
stefank@1885 31 #include "ci/ciMethodData.hpp"
stefank@1885 32 #include "ci/ciMethodKlass.hpp"
stefank@1885 33 #include "ci/ciStreams.hpp"
stefank@1885 34 #include "ci/ciSymbol.hpp"
stefank@1885 35 #include "ci/ciUtilities.hpp"
stefank@1885 36 #include "classfile/systemDictionary.hpp"
stefank@1885 37 #include "compiler/abstractCompiler.hpp"
stefank@1885 38 #include "compiler/compilerOracle.hpp"
stefank@1885 39 #include "compiler/methodLiveness.hpp"
stefank@1885 40 #include "interpreter/interpreter.hpp"
stefank@1885 41 #include "interpreter/linkResolver.hpp"
stefank@1885 42 #include "interpreter/oopMapCache.hpp"
stefank@1885 43 #include "memory/allocation.inline.hpp"
stefank@1885 44 #include "memory/resourceArea.hpp"
stefank@1885 45 #include "oops/generateOopMap.hpp"
stefank@1885 46 #include "oops/oop.inline.hpp"
stefank@1885 47 #include "prims/nativeLookup.hpp"
stefank@1885 48 #include "runtime/deoptimization.hpp"
stefank@1885 49 #include "utilities/bitMap.inline.hpp"
stefank@1885 50 #include "utilities/xmlstream.hpp"
stefank@1885 51 #ifdef COMPILER2
stefank@1885 52 #include "ci/bcEscapeAnalyzer.hpp"
stefank@1885 53 #include "ci/ciTypeFlow.hpp"
stefank@1885 54 #include "oops/methodOop.hpp"
stefank@1885 55 #endif
stefank@1885 56 #ifdef SHARK
stefank@1885 57 #include "ci/ciTypeFlow.hpp"
stefank@1885 58 #include "oops/methodOop.hpp"
stefank@1885 59 #endif
duke@0 60
duke@0 61 // ciMethod
duke@0 62 //
duke@0 63 // This class represents a methodOop in the HotSpot virtual
duke@0 64 // machine.
duke@0 65
duke@0 66
duke@0 67 // ------------------------------------------------------------------
duke@0 68 // ciMethod::ciMethod
duke@0 69 //
duke@0 70 // Loaded method.
duke@0 71 ciMethod::ciMethod(methodHandle h_m) : ciObject(h_m) {
duke@0 72 assert(h_m() != NULL, "no null method");
duke@0 73
duke@0 74 // These fields are always filled in in loaded methods.
duke@0 75 _flags = ciFlags(h_m()->access_flags());
duke@0 76
duke@0 77 // Easy to compute, so fill them in now.
duke@0 78 _max_stack = h_m()->max_stack();
duke@0 79 _max_locals = h_m()->max_locals();
duke@0 80 _code_size = h_m()->code_size();
duke@0 81 _intrinsic_id = h_m()->intrinsic_id();
duke@0 82 _handler_count = h_m()->exception_table()->length() / 4;
duke@0 83 _uses_monitors = h_m()->access_flags().has_monitor_bytecodes();
duke@0 84 _balanced_monitors = !_uses_monitors || h_m()->access_flags().is_monitor_matching();
iveresov@1707 85 _is_c1_compilable = !h_m()->is_not_c1_compilable();
iveresov@1707 86 _is_c2_compilable = !h_m()->is_not_c2_compilable();
duke@0 87 // Lazy fields, filled in on demand. Require allocation.
duke@0 88 _code = NULL;
duke@0 89 _exception_handlers = NULL;
duke@0 90 _liveness = NULL;
duke@0 91 _method_blocks = NULL;
twisti@1616 92 #if defined(COMPILER2) || defined(SHARK)
duke@0 93 _flow = NULL;
kvn@1570 94 _bcea = NULL;
twisti@1616 95 #endif // COMPILER2 || SHARK
duke@0 96
kvn@780 97 ciEnv *env = CURRENT_ENV;
iveresov@1707 98 if (env->jvmti_can_hotswap_or_post_breakpoint() && can_be_compiled()) {
duke@0 99 // 6328518 check hotswap conditions under the right lock.
duke@0 100 MutexLocker locker(Compile_lock);
duke@0 101 if (Dependencies::check_evol_method(h_m()) != NULL) {
iveresov@1707 102 _is_c1_compilable = false;
iveresov@1707 103 _is_c2_compilable = false;
duke@0 104 }
duke@0 105 } else {
duke@0 106 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops());
duke@0 107 }
duke@0 108
duke@0 109 if (instanceKlass::cast(h_m()->method_holder())->is_linked()) {
duke@0 110 _can_be_statically_bound = h_m()->can_be_statically_bound();
duke@0 111 } else {
duke@0 112 // Have to use a conservative value in this case.
duke@0 113 _can_be_statically_bound = false;
duke@0 114 }
duke@0 115
duke@0 116 // Adjust the definition of this condition to be more useful:
duke@0 117 // %%% take these conditions into account in vtable generation
duke@0 118 if (!_can_be_statically_bound && h_m()->is_private())
duke@0 119 _can_be_statically_bound = true;
duke@0 120 if (_can_be_statically_bound && h_m()->is_abstract())
duke@0 121 _can_be_statically_bound = false;
duke@0 122
duke@0 123 // generating _signature may allow GC and therefore move m.
duke@0 124 // These fields are always filled in.
coleenp@2069 125 _name = env->get_symbol(h_m()->name());
duke@0 126 _holder = env->get_object(h_m()->method_holder())->as_instance_klass();
coleenp@2069 127 ciSymbol* sig_symbol = env->get_symbol(h_m()->signature());
jrose@2557 128 constantPoolHandle cpool = h_m()->constants();
jrose@2557 129 _signature = new (env->arena()) ciSignature(_holder, cpool, sig_symbol);
duke@0 130 _method_data = NULL;
duke@0 131 // Take a snapshot of these values, so they will be commensurate with the MDO.
iveresov@1707 132 if (ProfileInterpreter || TieredCompilation) {
duke@0 133 int invcnt = h_m()->interpreter_invocation_count();
duke@0 134 // if the value overflowed report it as max int
duke@0 135 _interpreter_invocation_count = invcnt < 0 ? max_jint : invcnt ;
duke@0 136 _interpreter_throwout_count = h_m()->interpreter_throwout_count();
duke@0 137 } else {
duke@0 138 _interpreter_invocation_count = 0;
duke@0 139 _interpreter_throwout_count = 0;
duke@0 140 }
duke@0 141 if (_interpreter_invocation_count == 0)
duke@0 142 _interpreter_invocation_count = 1;
duke@0 143 }
duke@0 144
duke@0 145
duke@0 146 // ------------------------------------------------------------------
duke@0 147 // ciMethod::ciMethod
duke@0 148 //
duke@0 149 // Unloaded method.
duke@0 150 ciMethod::ciMethod(ciInstanceKlass* holder,
duke@0 151 ciSymbol* name,
duke@0 152 ciSymbol* signature) : ciObject(ciMethodKlass::make()) {
duke@0 153 // These fields are always filled in.
duke@0 154 _name = name;
duke@0 155 _holder = holder;
jrose@2557 156 _signature = new (CURRENT_ENV->arena()) ciSignature(_holder, constantPoolHandle(), signature);
duke@0 157 _intrinsic_id = vmIntrinsics::_none;
duke@0 158 _liveness = NULL;
duke@0 159 _can_be_statically_bound = false;
duke@0 160 _method_blocks = NULL;
duke@0 161 _method_data = NULL;
twisti@1616 162 #if defined(COMPILER2) || defined(SHARK)
duke@0 163 _flow = NULL;
kvn@1570 164 _bcea = NULL;
twisti@1616 165 #endif // COMPILER2 || SHARK
duke@0 166 }
duke@0 167
duke@0 168
duke@0 169 // ------------------------------------------------------------------
duke@0 170 // ciMethod::load_code
duke@0 171 //
duke@0 172 // Load the bytecodes and exception handler table for this method.
duke@0 173 void ciMethod::load_code() {
duke@0 174 VM_ENTRY_MARK;
duke@0 175 assert(is_loaded(), "only loaded methods have code");
duke@0 176
duke@0 177 methodOop me = get_methodOop();
duke@0 178 Arena* arena = CURRENT_THREAD_ENV->arena();
duke@0 179
duke@0 180 // Load the bytecodes.
duke@0 181 _code = (address)arena->Amalloc(code_size());
duke@0 182 memcpy(_code, me->code_base(), code_size());
duke@0 183
duke@0 184 // Revert any breakpoint bytecodes in ci's copy
kvn@27 185 if (me->number_of_breakpoints() > 0) {
duke@0 186 BreakpointInfo* bp = instanceKlass::cast(me->method_holder())->breakpoints();
duke@0 187 for (; bp != NULL; bp = bp->next()) {
duke@0 188 if (bp->match(me)) {
duke@0 189 code_at_put(bp->bci(), bp->orig_bytecode());
duke@0 190 }
duke@0 191 }
duke@0 192 }
duke@0 193
duke@0 194 // And load the exception table.
duke@0 195 typeArrayOop exc_table = me->exception_table();
duke@0 196
duke@0 197 // Allocate one extra spot in our list of exceptions. This
duke@0 198 // last entry will be used to represent the possibility that
duke@0 199 // an exception escapes the method. See ciExceptionHandlerStream
duke@0 200 // for details.
duke@0 201 _exception_handlers =
duke@0 202 (ciExceptionHandler**)arena->Amalloc(sizeof(ciExceptionHandler*)
duke@0 203 * (_handler_count + 1));
duke@0 204 if (_handler_count > 0) {
duke@0 205 for (int i=0; i<_handler_count; i++) {
duke@0 206 int base = i*4;
duke@0 207 _exception_handlers[i] = new (arena) ciExceptionHandler(
duke@0 208 holder(),
duke@0 209 /* start */ exc_table->int_at(base),
duke@0 210 /* limit */ exc_table->int_at(base+1),
duke@0 211 /* goto pc */ exc_table->int_at(base+2),
duke@0 212 /* cp index */ exc_table->int_at(base+3));
duke@0 213 }
duke@0 214 }
duke@0 215
duke@0 216 // Put an entry at the end of our list to represent the possibility
duke@0 217 // of exceptional exit.
duke@0 218 _exception_handlers[_handler_count] =
duke@0 219 new (arena) ciExceptionHandler(holder(), 0, code_size(), -1, 0);
duke@0 220
duke@0 221 if (CIPrintMethodCodes) {
duke@0 222 print_codes();
duke@0 223 }
duke@0 224 }
duke@0 225
duke@0 226
duke@0 227 // ------------------------------------------------------------------
duke@0 228 // ciMethod::has_linenumber_table
duke@0 229 //
duke@0 230 // length unknown until decompression
duke@0 231 bool ciMethod::has_linenumber_table() const {
duke@0 232 check_is_loaded();
duke@0 233 VM_ENTRY_MARK;
duke@0 234 return get_methodOop()->has_linenumber_table();
duke@0 235 }
duke@0 236
duke@0 237
duke@0 238 // ------------------------------------------------------------------
duke@0 239 // ciMethod::compressed_linenumber_table
duke@0 240 u_char* ciMethod::compressed_linenumber_table() const {
duke@0 241 check_is_loaded();
duke@0 242 VM_ENTRY_MARK;
duke@0 243 return get_methodOop()->compressed_linenumber_table();
duke@0 244 }
duke@0 245
duke@0 246
duke@0 247 // ------------------------------------------------------------------
duke@0 248 // ciMethod::line_number_from_bci
duke@0 249 int ciMethod::line_number_from_bci(int bci) const {
duke@0 250 check_is_loaded();
duke@0 251 VM_ENTRY_MARK;
duke@0 252 return get_methodOop()->line_number_from_bci(bci);
duke@0 253 }
duke@0 254
duke@0 255
duke@0 256 // ------------------------------------------------------------------
duke@0 257 // ciMethod::vtable_index
duke@0 258 //
duke@0 259 // Get the position of this method's entry in the vtable, if any.
duke@0 260 int ciMethod::vtable_index() {
duke@0 261 check_is_loaded();
duke@0 262 assert(holder()->is_linked(), "must be linked");
duke@0 263 VM_ENTRY_MARK;
duke@0 264 return get_methodOop()->vtable_index();
duke@0 265 }
duke@0 266
duke@0 267
twisti@1616 268 #ifdef SHARK
twisti@1616 269 // ------------------------------------------------------------------
twisti@1616 270 // ciMethod::itable_index
twisti@1616 271 //
twisti@1616 272 // Get the position of this method's entry in the itable, if any.
twisti@1616 273 int ciMethod::itable_index() {
twisti@1616 274 check_is_loaded();
twisti@1616 275 assert(holder()->is_linked(), "must be linked");
twisti@1616 276 VM_ENTRY_MARK;
twisti@1616 277 return klassItable::compute_itable_index(get_methodOop());
twisti@1616 278 }
twisti@1616 279 #endif // SHARK
twisti@1616 280
twisti@1616 281
duke@0 282 // ------------------------------------------------------------------
duke@0 283 // ciMethod::native_entry
duke@0 284 //
duke@0 285 // Get the address of this method's native code, if any.
duke@0 286 address ciMethod::native_entry() {
duke@0 287 check_is_loaded();
duke@0 288 assert(flags().is_native(), "must be native method");
duke@0 289 VM_ENTRY_MARK;
duke@0 290 methodOop method = get_methodOop();
duke@0 291 address entry = method->native_function();
duke@0 292 assert(entry != NULL, "must be valid entry point");
duke@0 293 return entry;
duke@0 294 }
duke@0 295
duke@0 296
duke@0 297 // ------------------------------------------------------------------
duke@0 298 // ciMethod::interpreter_entry
duke@0 299 //
duke@0 300 // Get the entry point for running this method in the interpreter.
duke@0 301 address ciMethod::interpreter_entry() {
duke@0 302 check_is_loaded();
duke@0 303 VM_ENTRY_MARK;
duke@0 304 methodHandle mh(THREAD, get_methodOop());
duke@0 305 return Interpreter::entry_for_method(mh);
duke@0 306 }
duke@0 307
duke@0 308
duke@0 309 // ------------------------------------------------------------------
duke@0 310 // ciMethod::uses_balanced_monitors
duke@0 311 //
duke@0 312 // Does this method use monitors in a strict stack-disciplined manner?
duke@0 313 bool ciMethod::has_balanced_monitors() {
duke@0 314 check_is_loaded();
duke@0 315 if (_balanced_monitors) return true;
duke@0 316
duke@0 317 // Analyze the method to see if monitors are used properly.
duke@0 318 VM_ENTRY_MARK;
duke@0 319 methodHandle method(THREAD, get_methodOop());
duke@0 320 assert(method->has_monitor_bytecodes(), "should have checked this");
duke@0 321
duke@0 322 // Check to see if a previous compilation computed the
duke@0 323 // monitor-matching analysis.
duke@0 324 if (method->guaranteed_monitor_matching()) {
duke@0 325 _balanced_monitors = true;
duke@0 326 return true;
duke@0 327 }
duke@0 328
duke@0 329 {
duke@0 330 EXCEPTION_MARK;
duke@0 331 ResourceMark rm(THREAD);
duke@0 332 GeneratePairingInfo gpi(method);
duke@0 333 gpi.compute_map(CATCH);
duke@0 334 if (!gpi.monitor_safe()) {
duke@0 335 return false;
duke@0 336 }
duke@0 337 method->set_guaranteed_monitor_matching();
duke@0 338 _balanced_monitors = true;
duke@0 339 }
duke@0 340 return true;
duke@0 341 }
duke@0 342
duke@0 343
duke@0 344 // ------------------------------------------------------------------
duke@0 345 // ciMethod::get_flow_analysis
duke@0 346 ciTypeFlow* ciMethod::get_flow_analysis() {
twisti@1616 347 #if defined(COMPILER2) || defined(SHARK)
duke@0 348 if (_flow == NULL) {
duke@0 349 ciEnv* env = CURRENT_ENV;
duke@0 350 _flow = new (env->arena()) ciTypeFlow(env, this);
duke@0 351 _flow->do_flow();
duke@0 352 }
duke@0 353 return _flow;
twisti@1616 354 #else // COMPILER2 || SHARK
duke@0 355 ShouldNotReachHere();
duke@0 356 return NULL;
twisti@1616 357 #endif // COMPILER2 || SHARK
duke@0 358 }
duke@0 359
duke@0 360
duke@0 361 // ------------------------------------------------------------------
duke@0 362 // ciMethod::get_osr_flow_analysis
duke@0 363 ciTypeFlow* ciMethod::get_osr_flow_analysis(int osr_bci) {
twisti@1616 364 #if defined(COMPILER2) || defined(SHARK)
duke@0 365 // OSR entry points are always place after a call bytecode of some sort
duke@0 366 assert(osr_bci >= 0, "must supply valid OSR entry point");
duke@0 367 ciEnv* env = CURRENT_ENV;
duke@0 368 ciTypeFlow* flow = new (env->arena()) ciTypeFlow(env, this, osr_bci);
duke@0 369 flow->do_flow();
duke@0 370 return flow;
twisti@1616 371 #else // COMPILER2 || SHARK
duke@0 372 ShouldNotReachHere();
duke@0 373 return NULL;
twisti@1616 374 #endif // COMPILER2 || SHARK
duke@0 375 }
duke@0 376
duke@0 377 // ------------------------------------------------------------------
never@991 378 // ciMethod::raw_liveness_at_bci
duke@0 379 //
duke@0 380 // Which local variables are live at a specific bci?
never@991 381 MethodLivenessResult ciMethod::raw_liveness_at_bci(int bci) {
duke@0 382 check_is_loaded();
duke@0 383 if (_liveness == NULL) {
duke@0 384 // Create the liveness analyzer.
duke@0 385 Arena* arena = CURRENT_ENV->arena();
duke@0 386 _liveness = new (arena) MethodLiveness(arena, this);
duke@0 387 _liveness->compute_liveness();
duke@0 388 }
never@991 389 return _liveness->get_liveness_at(bci);
never@991 390 }
never@991 391
never@991 392 // ------------------------------------------------------------------
never@991 393 // ciMethod::liveness_at_bci
never@991 394 //
never@991 395 // Which local variables are live at a specific bci? When debugging
never@991 396 // will return true for all locals in some cases to improve debug
never@991 397 // information.
never@991 398 MethodLivenessResult ciMethod::liveness_at_bci(int bci) {
never@991 399 MethodLivenessResult result = raw_liveness_at_bci(bci);
kvn@780 400 if (CURRENT_ENV->jvmti_can_access_local_variables() || DeoptimizeALot || CompileTheWorld) {
duke@0 401 // Keep all locals live for the user's edification and amusement.
duke@0 402 result.at_put_range(0, result.size(), true);
duke@0 403 }
duke@0 404 return result;
duke@0 405 }
duke@0 406
duke@0 407 // ciMethod::live_local_oops_at_bci
duke@0 408 //
duke@0 409 // find all the live oops in the locals array for a particular bci
duke@0 410 // Compute what the interpreter believes by using the interpreter
duke@0 411 // oopmap generator. This is used as a double check during osr to
duke@0 412 // guard against conservative result from MethodLiveness making us
duke@0 413 // think a dead oop is live. MethodLiveness is conservative in the
duke@0 414 // sense that it may consider locals to be live which cannot be live,
duke@0 415 // like in the case where a local could contain an oop or a primitive
duke@0 416 // along different paths. In that case the local must be dead when
duke@0 417 // those paths merge. Since the interpreter's viewpoint is used when
duke@0 418 // gc'ing an interpreter frame we need to use its viewpoint during
duke@0 419 // OSR when loading the locals.
duke@0 420
duke@0 421 BitMap ciMethod::live_local_oops_at_bci(int bci) {
duke@0 422 VM_ENTRY_MARK;
duke@0 423 InterpreterOopMap mask;
duke@0 424 OopMapCache::compute_one_oop_map(get_methodOop(), bci, &mask);
duke@0 425 int mask_size = max_locals();
duke@0 426 BitMap result(mask_size);
duke@0 427 result.clear();
duke@0 428 int i;
duke@0 429 for (i = 0; i < mask_size ; i++ ) {
duke@0 430 if (mask.is_oop(i)) result.set_bit(i);
duke@0 431 }
duke@0 432 return result;
duke@0 433 }
duke@0 434
duke@0 435
duke@0 436 #ifdef COMPILER1
duke@0 437 // ------------------------------------------------------------------
duke@0 438 // ciMethod::bci_block_start
duke@0 439 //
duke@0 440 // Marks all bcis where a new basic block starts
duke@0 441 const BitMap ciMethod::bci_block_start() {
duke@0 442 check_is_loaded();
duke@0 443 if (_liveness == NULL) {
duke@0 444 // Create the liveness analyzer.
duke@0 445 Arena* arena = CURRENT_ENV->arena();
duke@0 446 _liveness = new (arena) MethodLiveness(arena, this);
duke@0 447 _liveness->compute_liveness();
duke@0 448 }
duke@0 449
duke@0 450 return _liveness->get_bci_block_start();
duke@0 451 }
duke@0 452 #endif // COMPILER1
duke@0 453
duke@0 454
duke@0 455 // ------------------------------------------------------------------
duke@0 456 // ciMethod::call_profile_at_bci
duke@0 457 //
duke@0 458 // Get the ciCallProfile for the invocation of this method.
duke@0 459 // Also reports receiver types for non-call type checks (if TypeProfileCasts).
duke@0 460 ciCallProfile ciMethod::call_profile_at_bci(int bci) {
duke@0 461 ResourceMark rm;
duke@0 462 ciCallProfile result;
duke@0 463 if (method_data() != NULL && method_data()->is_mature()) {
duke@0 464 ciProfileData* data = method_data()->bci_to_data(bci);
duke@0 465 if (data != NULL && data->is_CounterData()) {
duke@0 466 // Every profiled call site has a counter.
duke@0 467 int count = data->as_CounterData()->count();
duke@0 468
duke@0 469 if (!data->is_ReceiverTypeData()) {
duke@0 470 result._receiver_count[0] = 0; // that's a definite zero
duke@0 471 } else { // ReceiverTypeData is a subclass of CounterData
duke@0 472 ciReceiverTypeData* call = (ciReceiverTypeData*)data->as_ReceiverTypeData();
duke@0 473 // In addition, virtual call sites have receiver type information
duke@0 474 int receivers_count_total = 0;
duke@0 475 int morphism = 0;
iveresov@1707 476 // Precompute morphism for the possible fixup
duke@0 477 for (uint i = 0; i < call->row_limit(); i++) {
duke@0 478 ciKlass* receiver = call->receiver(i);
duke@0 479 if (receiver == NULL) continue;
iveresov@1707 480 morphism++;
iveresov@1707 481 }
iveresov@1707 482 int epsilon = 0;
iveresov@1707 483 if (TieredCompilation && ProfileInterpreter) {
iveresov@1707 484 // Interpreter and C1 treat final and special invokes differently.
iveresov@1707 485 // C1 will record a type, whereas the interpreter will just
iveresov@1707 486 // increment the count. Detect this case.
iveresov@1707 487 if (morphism == 1 && count > 0) {
iveresov@1707 488 epsilon = count;
iveresov@1707 489 count = 0;
iveresov@1707 490 }
iveresov@1707 491 }
iveresov@1707 492 for (uint i = 0; i < call->row_limit(); i++) {
iveresov@1707 493 ciKlass* receiver = call->receiver(i);
iveresov@1707 494 if (receiver == NULL) continue;
iveresov@1707 495 int rcount = call->receiver_count(i) + epsilon;
duke@0 496 if (rcount == 0) rcount = 1; // Should be valid value
duke@0 497 receivers_count_total += rcount;
duke@0 498 // Add the receiver to result data.
duke@0 499 result.add_receiver(receiver, rcount);
duke@0 500 // If we extend profiling to record methods,
duke@0 501 // we will set result._method also.
duke@0 502 }
duke@0 503 // Determine call site's morphism.
kvn@1206 504 // The call site count is 0 with known morphism (onlt 1 or 2 receivers)
kvn@1206 505 // or < 0 in the case of a type check failured for checkcast, aastore, instanceof.
kvn@1206 506 // The call site count is > 0 in the case of a polymorphic virtual call.
kvn@1206 507 if (morphism > 0 && morphism == result._limit) {
kvn@1206 508 // The morphism <= MorphismLimit.
kvn@1206 509 if ((morphism < ciCallProfile::MorphismLimit) ||
kvn@1206 510 (morphism == ciCallProfile::MorphismLimit && count == 0)) {
kvn@1206 511 #ifdef ASSERT
kvn@1206 512 if (count > 0) {
kvn@1251 513 this->print_short_name(tty);
kvn@1251 514 tty->print_cr(" @ bci:%d", bci);
kvn@1206 515 this->print_codes();
kvn@1206 516 assert(false, "this call site should not be polymorphic");
kvn@1206 517 }
kvn@1206 518 #endif
duke@0 519 result._morphism = morphism;
duke@0 520 }
duke@0 521 }
duke@0 522 // Make the count consistent if this is a call profile. If count is
duke@0 523 // zero or less, presume that this is a typecheck profile and
duke@0 524 // do nothing. Otherwise, increase count to be the sum of all
duke@0 525 // receiver's counts.
kvn@1206 526 if (count >= 0) {
kvn@1206 527 count += receivers_count_total;
duke@0 528 }
duke@0 529 }
duke@0 530 result._count = count;
duke@0 531 }
duke@0 532 }
duke@0 533 return result;
duke@0 534 }
duke@0 535
duke@0 536 // ------------------------------------------------------------------
duke@0 537 // Add new receiver and sort data by receiver's profile count.
duke@0 538 void ciCallProfile::add_receiver(ciKlass* receiver, int receiver_count) {
duke@0 539 // Add new receiver and sort data by receiver's counts when we have space
duke@0 540 // for it otherwise replace the less called receiver (less called receiver
duke@0 541 // is placed to the last array element which is not used).
duke@0 542 // First array's element contains most called receiver.
duke@0 543 int i = _limit;
duke@0 544 for (; i > 0 && receiver_count > _receiver_count[i-1]; i--) {
duke@0 545 _receiver[i] = _receiver[i-1];
duke@0 546 _receiver_count[i] = _receiver_count[i-1];
duke@0 547 }
duke@0 548 _receiver[i] = receiver;
duke@0 549 _receiver_count[i] = receiver_count;
duke@0 550 if (_limit < MorphismLimit) _limit++;
duke@0 551 }
duke@0 552
duke@0 553 // ------------------------------------------------------------------
duke@0 554 // ciMethod::find_monomorphic_target
duke@0 555 //
duke@0 556 // Given a certain calling environment, find the monomorphic target
duke@0 557 // for the call. Return NULL if the call is not monomorphic in
duke@0 558 // its calling environment, or if there are only abstract methods.
duke@0 559 // The returned method is never abstract.
duke@0 560 // Note: If caller uses a non-null result, it must inform dependencies
duke@0 561 // via assert_unique_concrete_method or assert_leaf_type.
duke@0 562 ciMethod* ciMethod::find_monomorphic_target(ciInstanceKlass* caller,
duke@0 563 ciInstanceKlass* callee_holder,
duke@0 564 ciInstanceKlass* actual_recv) {
duke@0 565 check_is_loaded();
duke@0 566
duke@0 567 if (actual_recv->is_interface()) {
duke@0 568 // %%% We cannot trust interface types, yet. See bug 6312651.
duke@0 569 return NULL;
duke@0 570 }
duke@0 571
duke@0 572 ciMethod* root_m = resolve_invoke(caller, actual_recv);
duke@0 573 if (root_m == NULL) {
duke@0 574 // Something went wrong looking up the actual receiver method.
duke@0 575 return NULL;
duke@0 576 }
duke@0 577 assert(!root_m->is_abstract(), "resolve_invoke promise");
duke@0 578
duke@0 579 // Make certain quick checks even if UseCHA is false.
duke@0 580
duke@0 581 // Is it private or final?
duke@0 582 if (root_m->can_be_statically_bound()) {
duke@0 583 return root_m;
duke@0 584 }
duke@0 585
duke@0 586 if (actual_recv->is_leaf_type() && actual_recv == root_m->holder()) {
duke@0 587 // Easy case. There is no other place to put a method, so don't bother
duke@0 588 // to go through the VM_ENTRY_MARK and all the rest.
duke@0 589 return root_m;
duke@0 590 }
duke@0 591
duke@0 592 // Array methods (clone, hashCode, etc.) are always statically bound.
duke@0 593 // If we were to see an array type here, we'd return root_m.
duke@0 594 // However, this method processes only ciInstanceKlasses. (See 4962591.)
duke@0 595 // The inline_native_clone intrinsic narrows Object to T[] properly,
duke@0 596 // so there is no need to do the same job here.
duke@0 597
duke@0 598 if (!UseCHA) return NULL;
duke@0 599
duke@0 600 VM_ENTRY_MARK;
duke@0 601
duke@0 602 methodHandle target;
duke@0 603 {
duke@0 604 MutexLocker locker(Compile_lock);
duke@0 605 klassOop context = actual_recv->get_klassOop();
duke@0 606 target = Dependencies::find_unique_concrete_method(context,
duke@0 607 root_m->get_methodOop());
duke@0 608 // %%% Should upgrade this ciMethod API to look for 1 or 2 concrete methods.
duke@0 609 }
duke@0 610
duke@0 611 #ifndef PRODUCT
duke@0 612 if (TraceDependencies && target() != NULL && target() != root_m->get_methodOop()) {
duke@0 613 tty->print("found a non-root unique target method");
duke@0 614 tty->print_cr(" context = %s", instanceKlass::cast(actual_recv->get_klassOop())->external_name());
duke@0 615 tty->print(" method = ");
duke@0 616 target->print_short_name(tty);
duke@0 617 tty->cr();
duke@0 618 }
duke@0 619 #endif //PRODUCT
duke@0 620
duke@0 621 if (target() == NULL) {
duke@0 622 return NULL;
duke@0 623 }
duke@0 624 if (target() == root_m->get_methodOop()) {
duke@0 625 return root_m;
duke@0 626 }
duke@0 627 if (!root_m->is_public() &&
duke@0 628 !root_m->is_protected()) {
duke@0 629 // If we are going to reason about inheritance, it's easiest
duke@0 630 // if the method in question is public, protected, or private.
duke@0 631 // If the answer is not root_m, it is conservatively correct
duke@0 632 // to return NULL, even if the CHA encountered irrelevant
duke@0 633 // methods in other packages.
duke@0 634 // %%% TO DO: Work out logic for package-private methods
duke@0 635 // with the same name but different vtable indexes.
duke@0 636 return NULL;
duke@0 637 }
duke@0 638 return CURRENT_THREAD_ENV->get_object(target())->as_method();
duke@0 639 }
duke@0 640
duke@0 641 // ------------------------------------------------------------------
duke@0 642 // ciMethod::resolve_invoke
duke@0 643 //
duke@0 644 // Given a known receiver klass, find the target for the call.
duke@0 645 // Return NULL if the call has no target or the target is abstract.
duke@0 646 ciMethod* ciMethod::resolve_invoke(ciKlass* caller, ciKlass* exact_receiver) {
duke@0 647 check_is_loaded();
duke@0 648 VM_ENTRY_MARK;
duke@0 649
duke@0 650 KlassHandle caller_klass (THREAD, caller->get_klassOop());
duke@0 651 KlassHandle h_recv (THREAD, exact_receiver->get_klassOop());
duke@0 652 KlassHandle h_resolved (THREAD, holder()->get_klassOop());
coleenp@2069 653 Symbol* h_name = name()->get_symbol();
coleenp@2069 654 Symbol* h_signature = signature()->get_symbol();
duke@0 655
duke@0 656 methodHandle m;
duke@0 657 // Only do exact lookup if receiver klass has been linked. Otherwise,
duke@0 658 // the vtable has not been setup, and the LinkResolver will fail.
duke@0 659 if (h_recv->oop_is_javaArray()
duke@0 660 ||
duke@0 661 instanceKlass::cast(h_recv())->is_linked() && !exact_receiver->is_interface()) {
duke@0 662 if (holder()->is_interface()) {
duke@0 663 m = LinkResolver::resolve_interface_call_or_null(h_recv, h_resolved, h_name, h_signature, caller_klass);
duke@0 664 } else {
duke@0 665 m = LinkResolver::resolve_virtual_call_or_null(h_recv, h_resolved, h_name, h_signature, caller_klass);
duke@0 666 }
duke@0 667 }
duke@0 668
duke@0 669 if (m.is_null()) {
duke@0 670 // Return NULL only if there was a problem with lookup (uninitialized class, etc.)
duke@0 671 return NULL;
duke@0 672 }
duke@0 673
duke@0 674 ciMethod* result = this;
duke@0 675 if (m() != get_methodOop()) {
duke@0 676 result = CURRENT_THREAD_ENV->get_object(m())->as_method();
duke@0 677 }
duke@0 678
duke@0 679 // Don't return abstract methods because they aren't
duke@0 680 // optimizable or interesting.
duke@0 681 if (result->is_abstract()) {
duke@0 682 return NULL;
duke@0 683 } else {
duke@0 684 return result;
duke@0 685 }
duke@0 686 }
duke@0 687
duke@0 688 // ------------------------------------------------------------------
duke@0 689 // ciMethod::resolve_vtable_index
duke@0 690 //
duke@0 691 // Given a known receiver klass, find the vtable index for the call.
duke@0 692 // Return methodOopDesc::invalid_vtable_index if the vtable_index is unknown.
duke@0 693 int ciMethod::resolve_vtable_index(ciKlass* caller, ciKlass* receiver) {
duke@0 694 check_is_loaded();
duke@0 695
duke@0 696 int vtable_index = methodOopDesc::invalid_vtable_index;
duke@0 697 // Only do lookup if receiver klass has been linked. Otherwise,
duke@0 698 // the vtable has not been setup, and the LinkResolver will fail.
duke@0 699 if (!receiver->is_interface()
duke@0 700 && (!receiver->is_instance_klass() ||
duke@0 701 receiver->as_instance_klass()->is_linked())) {
duke@0 702 VM_ENTRY_MARK;
duke@0 703
duke@0 704 KlassHandle caller_klass (THREAD, caller->get_klassOop());
duke@0 705 KlassHandle h_recv (THREAD, receiver->get_klassOop());
coleenp@2069 706 Symbol* h_name = name()->get_symbol();
coleenp@2069 707 Symbol* h_signature = signature()->get_symbol();
duke@0 708
duke@0 709 vtable_index = LinkResolver::resolve_virtual_vtable_index(h_recv, h_recv, h_name, h_signature, caller_klass);
duke@0 710 if (vtable_index == methodOopDesc::nonvirtual_vtable_index) {
duke@0 711 // A statically bound method. Return "no such index".
duke@0 712 vtable_index = methodOopDesc::invalid_vtable_index;
duke@0 713 }
duke@0 714 }
duke@0 715
duke@0 716 return vtable_index;
duke@0 717 }
duke@0 718
duke@0 719 // ------------------------------------------------------------------
duke@0 720 // ciMethod::interpreter_call_site_count
duke@0 721 int ciMethod::interpreter_call_site_count(int bci) {
duke@0 722 if (method_data() != NULL) {
duke@0 723 ResourceMark rm;
duke@0 724 ciProfileData* data = method_data()->bci_to_data(bci);
duke@0 725 if (data != NULL && data->is_CounterData()) {
duke@0 726 return scale_count(data->as_CounterData()->count());
duke@0 727 }
duke@0 728 }
duke@0 729 return -1; // unknown
duke@0 730 }
duke@0 731
duke@0 732 // ------------------------------------------------------------------
duke@0 733 // Adjust a CounterData count to be commensurate with
duke@0 734 // interpreter_invocation_count. If the MDO exists for
duke@0 735 // only 25% of the time the method exists, then the
duke@0 736 // counts in the MDO should be scaled by 4X, so that
duke@0 737 // they can be usefully and stably compared against the
duke@0 738 // invocation counts in methods.
duke@0 739 int ciMethod::scale_count(int count, float prof_factor) {
duke@0 740 if (count > 0 && method_data() != NULL) {
iveresov@1707 741 int counter_life;
duke@0 742 int method_life = interpreter_invocation_count();
iveresov@1707 743 if (TieredCompilation) {
iveresov@1707 744 // In tiered the MDO's life is measured directly, so just use the snapshotted counters
iveresov@1707 745 counter_life = MAX2(method_data()->invocation_count(), method_data()->backedge_count());
iveresov@1707 746 } else {
iveresov@1707 747 int current_mileage = method_data()->current_mileage();
iveresov@1707 748 int creation_mileage = method_data()->creation_mileage();
iveresov@1707 749 counter_life = current_mileage - creation_mileage;
iveresov@1707 750 }
iveresov@1707 751
duke@0 752 // counter_life due to backedge_counter could be > method_life
duke@0 753 if (counter_life > method_life)
duke@0 754 counter_life = method_life;
duke@0 755 if (0 < counter_life && counter_life <= method_life) {
duke@0 756 count = (int)((double)count * prof_factor * method_life / counter_life + 0.5);
duke@0 757 count = (count > 0) ? count : 1;
duke@0 758 }
duke@0 759 }
duke@0 760 return count;
duke@0 761 }
duke@0 762
duke@0 763 // ------------------------------------------------------------------
jrose@710 764 // invokedynamic support
twisti@1485 765
twisti@1485 766 // ------------------------------------------------------------------
twisti@1485 767 // ciMethod::is_method_handle_invoke
jrose@710 768 //
jrose@1585 769 // Return true if the method is an instance of one of the two
jrose@1585 770 // signature-polymorphic MethodHandle methods, invokeExact or invokeGeneric.
twisti@1137 771 bool ciMethod::is_method_handle_invoke() const {
twisti@1743 772 if (!is_loaded()) {
jrose@2212 773 bool flag = (holder()->name() == ciSymbol::java_lang_invoke_MethodHandle() &&
twisti@1743 774 methodOopDesc::is_method_handle_invoke_name(name()->sid()));
twisti@1743 775 return flag;
twisti@1743 776 }
jrose@1585 777 VM_ENTRY_MARK;
jrose@1585 778 return get_methodOop()->is_method_handle_invoke();
jrose@710 779 }
jrose@710 780
twisti@1485 781 // ------------------------------------------------------------------
twisti@1485 782 // ciMethod::is_method_handle_adapter
twisti@1485 783 //
twisti@1485 784 // Return true if the method is a generated MethodHandle adapter.
jrose@1585 785 // These are built by MethodHandleCompiler.
twisti@1152 786 bool ciMethod::is_method_handle_adapter() const {
jrose@1585 787 if (!is_loaded()) return false;
twisti@1152 788 VM_ENTRY_MARK;
twisti@1152 789 return get_methodOop()->is_method_handle_adapter();
twisti@1152 790 }
twisti@1152 791
jrose@710 792 ciInstance* ciMethod::method_handle_type() {
jrose@710 793 check_is_loaded();
jrose@710 794 VM_ENTRY_MARK;
jrose@710 795 oop mtype = get_methodOop()->method_handle_type();
jrose@710 796 return CURRENT_THREAD_ENV->get_object(mtype)->as_instance();
jrose@710 797 }
jrose@710 798
jrose@710 799
jrose@710 800 // ------------------------------------------------------------------
iveresov@1920 801 // ciMethod::ensure_method_data
duke@0 802 //
duke@0 803 // Generate new methodDataOop objects at compile time.
iveresov@1920 804 // Return true if allocation was successful or no MDO is required.
iveresov@1920 805 bool ciMethod::ensure_method_data(methodHandle h_m) {
duke@0 806 EXCEPTION_CONTEXT;
iveresov@1920 807 if (is_native() || is_abstract() || h_m()->is_accessor()) return true;
duke@0 808 if (h_m()->method_data() == NULL) {
duke@0 809 methodOopDesc::build_interpreter_method_data(h_m, THREAD);
duke@0 810 if (HAS_PENDING_EXCEPTION) {
duke@0 811 CLEAR_PENDING_EXCEPTION;
duke@0 812 }
duke@0 813 }
duke@0 814 if (h_m()->method_data() != NULL) {
duke@0 815 _method_data = CURRENT_ENV->get_object(h_m()->method_data())->as_method_data();
duke@0 816 _method_data->load_data();
iveresov@1920 817 return true;
duke@0 818 } else {
duke@0 819 _method_data = CURRENT_ENV->get_empty_methodData();
iveresov@1920 820 return false;
duke@0 821 }
duke@0 822 }
duke@0 823
duke@0 824 // public, retroactive version
iveresov@1920 825 bool ciMethod::ensure_method_data() {
iveresov@1920 826 bool result = true;
duke@0 827 if (_method_data == NULL || _method_data->is_empty()) {
duke@0 828 GUARDED_VM_ENTRY({
iveresov@1920 829 result = ensure_method_data(get_methodOop());
duke@0 830 });
duke@0 831 }
iveresov@1920 832 return result;
duke@0 833 }
duke@0 834
duke@0 835
duke@0 836 // ------------------------------------------------------------------
duke@0 837 // ciMethod::method_data
duke@0 838 //
duke@0 839 ciMethodData* ciMethod::method_data() {
duke@0 840 if (_method_data != NULL) {
duke@0 841 return _method_data;
duke@0 842 }
duke@0 843 VM_ENTRY_MARK;
duke@0 844 ciEnv* env = CURRENT_ENV;
duke@0 845 Thread* my_thread = JavaThread::current();
duke@0 846 methodHandle h_m(my_thread, get_methodOop());
duke@0 847
duke@0 848 if (h_m()->method_data() != NULL) {
duke@0 849 _method_data = CURRENT_ENV->get_object(h_m()->method_data())->as_method_data();
duke@0 850 _method_data->load_data();
duke@0 851 } else {
duke@0 852 _method_data = CURRENT_ENV->get_empty_methodData();
duke@0 853 }
duke@0 854 return _method_data;
duke@0 855
duke@0 856 }
duke@0 857
iveresov@1920 858 // ------------------------------------------------------------------
iveresov@1920 859 // ciMethod::method_data_or_null
iveresov@1920 860 // Returns a pointer to ciMethodData if MDO exists on the VM side,
iveresov@1920 861 // NULL otherwise.
iveresov@1920 862 ciMethodData* ciMethod::method_data_or_null() {
iveresov@1920 863 ciMethodData *md = method_data();
iveresov@1920 864 if (md->is_empty()) return NULL;
iveresov@1920 865 return md;
iveresov@1920 866 }
duke@0 867
duke@0 868 // ------------------------------------------------------------------
duke@0 869 // ciMethod::will_link
duke@0 870 //
duke@0 871 // Will this method link in a specific calling context?
duke@0 872 bool ciMethod::will_link(ciKlass* accessing_klass,
duke@0 873 ciKlass* declared_method_holder,
duke@0 874 Bytecodes::Code bc) {
duke@0 875 if (!is_loaded()) {
duke@0 876 // Method lookup failed.
duke@0 877 return false;
duke@0 878 }
duke@0 879
duke@0 880 // The link checks have been front-loaded into the get_method
duke@0 881 // call. This method (ciMethod::will_link()) will be removed
duke@0 882 // in the future.
duke@0 883
duke@0 884 return true;
duke@0 885 }
duke@0 886
duke@0 887 // ------------------------------------------------------------------
duke@0 888 // ciMethod::should_exclude
duke@0 889 //
duke@0 890 // Should this method be excluded from compilation?
duke@0 891 bool ciMethod::should_exclude() {
duke@0 892 check_is_loaded();
duke@0 893 VM_ENTRY_MARK;
duke@0 894 methodHandle mh(THREAD, get_methodOop());
duke@0 895 bool ignore;
duke@0 896 return CompilerOracle::should_exclude(mh, ignore);
duke@0 897 }
duke@0 898
duke@0 899 // ------------------------------------------------------------------
duke@0 900 // ciMethod::should_inline
duke@0 901 //
duke@0 902 // Should this method be inlined during compilation?
duke@0 903 bool ciMethod::should_inline() {
duke@0 904 check_is_loaded();
duke@0 905 VM_ENTRY_MARK;
duke@0 906 methodHandle mh(THREAD, get_methodOop());
duke@0 907 return CompilerOracle::should_inline(mh);
duke@0 908 }
duke@0 909
duke@0 910 // ------------------------------------------------------------------
duke@0 911 // ciMethod::should_not_inline
duke@0 912 //
duke@0 913 // Should this method be disallowed from inlining during compilation?
duke@0 914 bool ciMethod::should_not_inline() {
duke@0 915 check_is_loaded();
duke@0 916 VM_ENTRY_MARK;
duke@0 917 methodHandle mh(THREAD, get_methodOop());
duke@0 918 return CompilerOracle::should_not_inline(mh);
duke@0 919 }
duke@0 920
duke@0 921 // ------------------------------------------------------------------
duke@0 922 // ciMethod::should_print_assembly
duke@0 923 //
duke@0 924 // Should the compiler print the generated code for this method?
duke@0 925 bool ciMethod::should_print_assembly() {
duke@0 926 check_is_loaded();
duke@0 927 VM_ENTRY_MARK;
duke@0 928 methodHandle mh(THREAD, get_methodOop());
duke@0 929 return CompilerOracle::should_print(mh);
duke@0 930 }
duke@0 931
duke@0 932 // ------------------------------------------------------------------
duke@0 933 // ciMethod::break_at_execute
duke@0 934 //
duke@0 935 // Should the compiler insert a breakpoint into the generated code
duke@0 936 // method?
duke@0 937 bool ciMethod::break_at_execute() {
duke@0 938 check_is_loaded();
duke@0 939 VM_ENTRY_MARK;
duke@0 940 methodHandle mh(THREAD, get_methodOop());
duke@0 941 return CompilerOracle::should_break_at(mh);
duke@0 942 }
duke@0 943
duke@0 944 // ------------------------------------------------------------------
duke@0 945 // ciMethod::has_option
duke@0 946 //
duke@0 947 bool ciMethod::has_option(const char* option) {
duke@0 948 check_is_loaded();
duke@0 949 VM_ENTRY_MARK;
duke@0 950 methodHandle mh(THREAD, get_methodOop());
duke@0 951 return CompilerOracle::has_option_string(mh, option);
duke@0 952 }
duke@0 953
duke@0 954 // ------------------------------------------------------------------
duke@0 955 // ciMethod::can_be_compiled
duke@0 956 //
duke@0 957 // Have previous compilations of this method succeeded?
duke@0 958 bool ciMethod::can_be_compiled() {
duke@0 959 check_is_loaded();
iveresov@1707 960 ciEnv* env = CURRENT_ENV;
iveresov@1707 961 if (is_c1_compile(env->comp_level())) {
iveresov@1707 962 return _is_c1_compilable;
iveresov@1707 963 }
iveresov@1707 964 return _is_c2_compilable;
duke@0 965 }
duke@0 966
duke@0 967 // ------------------------------------------------------------------
duke@0 968 // ciMethod::set_not_compilable
duke@0 969 //
duke@0 970 // Tell the VM that this method cannot be compiled at all.
duke@0 971 void ciMethod::set_not_compilable() {
duke@0 972 check_is_loaded();
duke@0 973 VM_ENTRY_MARK;
iveresov@1707 974 ciEnv* env = CURRENT_ENV;
iveresov@1707 975 if (is_c1_compile(env->comp_level())) {
iveresov@1707 976 _is_c1_compilable = false;
iveresov@1707 977 } else {
iveresov@1707 978 _is_c2_compilable = false;
iveresov@1707 979 }
iveresov@1707 980 get_methodOop()->set_not_compilable(env->comp_level());
duke@0 981 }
duke@0 982
duke@0 983 // ------------------------------------------------------------------
duke@0 984 // ciMethod::can_be_osr_compiled
duke@0 985 //
duke@0 986 // Have previous compilations of this method succeeded?
duke@0 987 //
duke@0 988 // Implementation note: the VM does not currently keep track
duke@0 989 // of failed OSR compilations per bci. The entry_bci parameter
duke@0 990 // is currently unused.
duke@0 991 bool ciMethod::can_be_osr_compiled(int entry_bci) {
duke@0 992 check_is_loaded();
duke@0 993 VM_ENTRY_MARK;
iveresov@1707 994 ciEnv* env = CURRENT_ENV;
iveresov@1707 995 return !get_methodOop()->is_not_osr_compilable(env->comp_level());
duke@0 996 }
duke@0 997
duke@0 998 // ------------------------------------------------------------------
duke@0 999 // ciMethod::has_compiled_code
duke@0 1000 bool ciMethod::has_compiled_code() {
duke@0 1001 VM_ENTRY_MARK;
duke@0 1002 return get_methodOop()->code() != NULL;
duke@0 1003 }
duke@0 1004
iveresov@1707 1005 int ciMethod::comp_level() {
iveresov@1707 1006 check_is_loaded();
iveresov@1707 1007 VM_ENTRY_MARK;
iveresov@1707 1008 nmethod* nm = get_methodOop()->code();
iveresov@1707 1009 if (nm != NULL) return nm->comp_level();
iveresov@1707 1010 return 0;
iveresov@1707 1011 }
iveresov@1707 1012
iveresov@2563 1013 int ciMethod::highest_osr_comp_level() {
iveresov@2563 1014 check_is_loaded();
iveresov@2563 1015 VM_ENTRY_MARK;
iveresov@2563 1016 return get_methodOop()->highest_osr_comp_level();
iveresov@2563 1017 }
iveresov@2563 1018
duke@0 1019 // ------------------------------------------------------------------
duke@0 1020 // ciMethod::instructions_size
twisti@1672 1021 //
twisti@1672 1022 // This is a rough metric for "fat" methods, compared before inlining
twisti@1672 1023 // with InlineSmallCode. The CodeBlob::code_size accessor includes
twisti@1672 1024 // junk like exception handler, stubs, and constant table, which are
twisti@1672 1025 // not highly relevant to an inlined method. So we use the more
twisti@1672 1026 // specific accessor nmethod::insts_size.
iveresov@1707 1027 int ciMethod::instructions_size(int comp_level) {
duke@0 1028 GUARDED_VM_ENTRY(
duke@0 1029 nmethod* code = get_methodOop()->code();
iveresov@1707 1030 if (code != NULL && (comp_level == CompLevel_any || comp_level == code->comp_level())) {
iveresov@1753 1031 return code->insts_end() - code->verified_entry_point();
duke@0 1032 }
iveresov@1707 1033 return 0;
duke@0 1034 )
duke@0 1035 }
duke@0 1036
duke@0 1037 // ------------------------------------------------------------------
duke@0 1038 // ciMethod::log_nmethod_identity
duke@0 1039 void ciMethod::log_nmethod_identity(xmlStream* log) {
duke@0 1040 GUARDED_VM_ENTRY(
duke@0 1041 nmethod* code = get_methodOop()->code();
duke@0 1042 if (code != NULL) {
duke@0 1043 code->log_identity(log);
duke@0 1044 }
duke@0 1045 )
duke@0 1046 }
duke@0 1047
duke@0 1048 // ------------------------------------------------------------------
duke@0 1049 // ciMethod::is_not_reached
duke@0 1050 bool ciMethod::is_not_reached(int bci) {
duke@0 1051 check_is_loaded();
duke@0 1052 VM_ENTRY_MARK;
duke@0 1053 return Interpreter::is_not_reached(
duke@0 1054 methodHandle(THREAD, get_methodOop()), bci);
duke@0 1055 }
duke@0 1056
duke@0 1057 // ------------------------------------------------------------------
duke@0 1058 // ciMethod::was_never_executed
duke@0 1059 bool ciMethod::was_executed_more_than(int times) {
duke@0 1060 VM_ENTRY_MARK;
duke@0 1061 return get_methodOop()->was_executed_more_than(times);
duke@0 1062 }
duke@0 1063
duke@0 1064 // ------------------------------------------------------------------
duke@0 1065 // ciMethod::has_unloaded_classes_in_signature
duke@0 1066 bool ciMethod::has_unloaded_classes_in_signature() {
duke@0 1067 VM_ENTRY_MARK;
duke@0 1068 {
duke@0 1069 EXCEPTION_MARK;
duke@0 1070 methodHandle m(THREAD, get_methodOop());
duke@0 1071 bool has_unloaded = methodOopDesc::has_unloaded_classes_in_signature(m, (JavaThread *)THREAD);
duke@0 1072 if( HAS_PENDING_EXCEPTION ) {
duke@0 1073 CLEAR_PENDING_EXCEPTION;
duke@0 1074 return true; // Declare that we may have unloaded classes
duke@0 1075 }
duke@0 1076 return has_unloaded;
duke@0 1077 }
duke@0 1078 }
duke@0 1079
duke@0 1080 // ------------------------------------------------------------------
duke@0 1081 // ciMethod::is_klass_loaded
duke@0 1082 bool ciMethod::is_klass_loaded(int refinfo_index, bool must_be_resolved) const {
duke@0 1083 VM_ENTRY_MARK;
duke@0 1084 return get_methodOop()->is_klass_loaded(refinfo_index, must_be_resolved);
duke@0 1085 }
duke@0 1086
duke@0 1087 // ------------------------------------------------------------------
duke@0 1088 // ciMethod::check_call
duke@0 1089 bool ciMethod::check_call(int refinfo_index, bool is_static) const {
duke@0 1090 VM_ENTRY_MARK;
duke@0 1091 {
duke@0 1092 EXCEPTION_MARK;
duke@0 1093 HandleMark hm(THREAD);
duke@0 1094 constantPoolHandle pool (THREAD, get_methodOop()->constants());
duke@0 1095 methodHandle spec_method;
duke@0 1096 KlassHandle spec_klass;
duke@0 1097 LinkResolver::resolve_method(spec_method, spec_klass, pool, refinfo_index, THREAD);
duke@0 1098 if (HAS_PENDING_EXCEPTION) {
duke@0 1099 CLEAR_PENDING_EXCEPTION;
duke@0 1100 return false;
duke@0 1101 } else {
duke@0 1102 return (spec_method->is_static() == is_static);
duke@0 1103 }
duke@0 1104 }
duke@0 1105 return false;
duke@0 1106 }
duke@0 1107
duke@0 1108 // ------------------------------------------------------------------
duke@0 1109 // ciMethod::print_codes
duke@0 1110 //
duke@0 1111 // Print the bytecodes for this method.
duke@0 1112 void ciMethod::print_codes_on(outputStream* st) {
duke@0 1113 check_is_loaded();
duke@0 1114 GUARDED_VM_ENTRY(get_methodOop()->print_codes_on(st);)
duke@0 1115 }
duke@0 1116
duke@0 1117
duke@0 1118 #define FETCH_FLAG_FROM_VM(flag_accessor) { \
duke@0 1119 check_is_loaded(); \
duke@0 1120 VM_ENTRY_MARK; \
duke@0 1121 return get_methodOop()->flag_accessor(); \
duke@0 1122 }
duke@0 1123
duke@0 1124 bool ciMethod::is_empty_method() const { FETCH_FLAG_FROM_VM(is_empty_method); }
duke@0 1125 bool ciMethod::is_vanilla_constructor() const { FETCH_FLAG_FROM_VM(is_vanilla_constructor); }
duke@0 1126 bool ciMethod::has_loops () const { FETCH_FLAG_FROM_VM(has_loops); }
duke@0 1127 bool ciMethod::has_jsrs () const { FETCH_FLAG_FROM_VM(has_jsrs); }
duke@0 1128 bool ciMethod::is_accessor () const { FETCH_FLAG_FROM_VM(is_accessor); }
duke@0 1129 bool ciMethod::is_initializer () const { FETCH_FLAG_FROM_VM(is_initializer); }
duke@0 1130
duke@0 1131 BCEscapeAnalyzer *ciMethod::get_bcea() {
kvn@1570 1132 #ifdef COMPILER2
duke@0 1133 if (_bcea == NULL) {
duke@0 1134 _bcea = new (CURRENT_ENV->arena()) BCEscapeAnalyzer(this, NULL);
duke@0 1135 }
duke@0 1136 return _bcea;
kvn@1570 1137 #else // COMPILER2
kvn@1570 1138 ShouldNotReachHere();
kvn@1570 1139 return NULL;
kvn@1570 1140 #endif // COMPILER2
duke@0 1141 }
duke@0 1142
duke@0 1143 ciMethodBlocks *ciMethod::get_method_blocks() {
duke@0 1144 Arena *arena = CURRENT_ENV->arena();
duke@0 1145 if (_method_blocks == NULL) {
duke@0 1146 _method_blocks = new (arena) ciMethodBlocks(arena, this);
duke@0 1147 }
duke@0 1148 return _method_blocks;
duke@0 1149 }
duke@0 1150
duke@0 1151 #undef FETCH_FLAG_FROM_VM
duke@0 1152
duke@0 1153
duke@0 1154 // ------------------------------------------------------------------
duke@0 1155 // ciMethod::print_codes
duke@0 1156 //
duke@0 1157 // Print a range of the bytecodes for this method.
duke@0 1158 void ciMethod::print_codes_on(int from, int to, outputStream* st) {
duke@0 1159 check_is_loaded();
duke@0 1160 GUARDED_VM_ENTRY(get_methodOop()->print_codes_on(from, to, st);)
duke@0 1161 }
duke@0 1162
duke@0 1163 // ------------------------------------------------------------------
duke@0 1164 // ciMethod::print_name
duke@0 1165 //
duke@0 1166 // Print the name of this method, including signature and some flags.
duke@0 1167 void ciMethod::print_name(outputStream* st) {
duke@0 1168 check_is_loaded();
duke@0 1169 GUARDED_VM_ENTRY(get_methodOop()->print_name(st);)
duke@0 1170 }
duke@0 1171
duke@0 1172 // ------------------------------------------------------------------
duke@0 1173 // ciMethod::print_short_name
duke@0 1174 //
duke@0 1175 // Print the name of this method, without signature.
duke@0 1176 void ciMethod::print_short_name(outputStream* st) {
duke@0 1177 check_is_loaded();
duke@0 1178 GUARDED_VM_ENTRY(get_methodOop()->print_short_name(st);)
duke@0 1179 }
duke@0 1180
duke@0 1181 // ------------------------------------------------------------------
duke@0 1182 // ciMethod::print_impl
duke@0 1183 //
duke@0 1184 // Implementation of the print method.
duke@0 1185 void ciMethod::print_impl(outputStream* st) {
duke@0 1186 ciObject::print_impl(st);
duke@0 1187 st->print(" name=");
duke@0 1188 name()->print_symbol_on(st);
duke@0 1189 st->print(" holder=");
duke@0 1190 holder()->print_name_on(st);
duke@0 1191 st->print(" signature=");
duke@0 1192 signature()->as_symbol()->print_symbol_on(st);
duke@0 1193 if (is_loaded()) {
duke@0 1194 st->print(" loaded=true flags=");
duke@0 1195 flags().print_member_flags(st);
duke@0 1196 } else {
duke@0 1197 st->print(" loaded=false");
duke@0 1198 }
duke@0 1199 }