1 /*
   2  * Copyright (c) 2001, 2014, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #include "precompiled.hpp"
  26 #include "ci/ciMetadata.hpp"
  27 #include "ci/ciMethodData.hpp"
  28 #include "ci/ciReplay.hpp"
  29 #include "ci/ciUtilities.hpp"
  30 #include "memory/allocation.inline.hpp"
  31 #include "memory/resourceArea.hpp"
  32 #include "runtime/deoptimization.hpp"
  33 #include "utilities/copy.hpp"
  34 
  35 // ciMethodData
  36 
  37 // ------------------------------------------------------------------
  38 // ciMethodData::ciMethodData
  39 //
  40 ciMethodData::ciMethodData(MethodData* md) : ciMetadata(md) {
  41   assert(md != NULL, "no null method data");
  42   Copy::zero_to_words((HeapWord*) &_orig, sizeof(_orig) / sizeof(HeapWord));
  43   _data = NULL;
  44   _data_size = 0;
  45   _extra_data_size = 0;
  46   _current_mileage = 0;
  47   _invocation_counter = 0;
  48   _backedge_counter = 0;
  49   _state = empty_state;
  50   _saw_free_extra_data = false;
  51   // Set an initial hint. Don't use set_hint_di() because
  52   // first_di() may be out of bounds if data_size is 0.
  53   _hint_di = first_di();
  54   // Initialize the escape information (to "don't know.");
  55   _eflags = _arg_local = _arg_stack = _arg_returned = 0;
  56   _parameters = NULL;
  57 }
  58 
  59 // ------------------------------------------------------------------
  60 // ciMethodData::ciMethodData
  61 //
  62 // No MethodData*.
  63 ciMethodData::ciMethodData() : ciMetadata(NULL) {
  64   Copy::zero_to_words((HeapWord*) &_orig, sizeof(_orig) / sizeof(HeapWord));
  65   _data = NULL;
  66   _data_size = 0;
  67   _extra_data_size = 0;
  68   _current_mileage = 0;
  69   _invocation_counter = 0;
  70   _backedge_counter = 0;
  71   _state = empty_state;
  72   _saw_free_extra_data = false;
  73   // Set an initial hint. Don't use set_hint_di() because
  74   // first_di() may be out of bounds if data_size is 0.
  75   _hint_di = first_di();
  76   // Initialize the escape information (to "don't know.");
  77   _eflags = _arg_local = _arg_stack = _arg_returned = 0;
  78   _parameters = NULL;
  79 }
  80 
  81 void ciMethodData::load_extra_data() {
  82   MethodData* mdo = get_MethodData();
  83 
  84   // speculative trap entries also hold a pointer to a Method so need to be translated
  85   DataLayout* dp_src  = mdo->extra_data_base();
  86   DataLayout* end_src = mdo->extra_data_limit();
  87   DataLayout* dp_dst  = extra_data_base();
  88   for (;; dp_src = MethodData::next_extra(dp_src), dp_dst = MethodData::next_extra(dp_dst)) {
  89     assert(dp_src < end_src, "moved past end of extra data");
  90     // New traps in the MDO can be added as we translate the copy so
  91     // look at the entries in the copy.
  92     switch(dp_dst->tag()) {
  93     case DataLayout::speculative_trap_data_tag: {
  94       ciSpeculativeTrapData* data_dst = new ciSpeculativeTrapData(dp_dst);
  95       SpeculativeTrapData* data_src = new SpeculativeTrapData(dp_src);
  96       data_dst->translate_from(data_src);
  97       break;
  98     }
  99     case DataLayout::bit_data_tag:
 100       break;
 101     case DataLayout::no_tag:
 102     case DataLayout::arg_info_data_tag:
 103       // An empty slot or ArgInfoData entry marks the end of the trap data
 104       return;
 105     default:
 106       fatal(err_msg("bad tag = %d", dp_dst->tag()));
 107     }
 108   }
 109 }
 110 
 111 void ciMethodData::load_data() {
 112   MethodData* mdo = get_MethodData();
 113   if (mdo == NULL) {
 114     return;
 115   }
 116 
 117   // To do: don't copy the data if it is not "ripe" -- require a minimum #
 118   // of invocations.
 119 
 120   // Snapshot the data -- actually, take an approximate snapshot of
 121   // the data.  Any concurrently executing threads may be changing the
 122   // data as we copy it.
 123   Copy::disjoint_words((HeapWord*) mdo,
 124                        (HeapWord*) &_orig,
 125                        sizeof(_orig) / HeapWordSize);
 126   Arena* arena = CURRENT_ENV->arena();
 127   _data_size = mdo->data_size();
 128   _extra_data_size = mdo->extra_data_size();
 129   int total_size = _data_size + _extra_data_size;
 130   _data = (intptr_t *) arena->Amalloc(total_size);
 131   Copy::disjoint_words((HeapWord*) mdo->data_base(), (HeapWord*) _data, total_size / HeapWordSize);
 132 
 133   // Traverse the profile data, translating any oops into their
 134   // ci equivalents.
 135   ResourceMark rm;
 136   ciProfileData* ci_data = first_data();
 137   ProfileData* data = mdo->first_data();
 138   while (is_valid(ci_data)) {
 139     ci_data->translate_from(data);
 140     ci_data = next_data(ci_data);
 141     data = mdo->next_data(data);
 142   }
 143   if (mdo->parameters_type_data() != NULL) {
 144     _parameters = data_layout_at(mdo->parameters_type_data_di());
 145     ciParametersTypeData* parameters = new ciParametersTypeData(_parameters);
 146     parameters->translate_from(mdo->parameters_type_data());
 147   }
 148 
 149   load_extra_data();
 150 
 151   // Note:  Extra data are all BitData, and do not need translation.
 152   _current_mileage = MethodData::mileage_of(mdo->method());
 153   _invocation_counter = mdo->invocation_count();
 154   _backedge_counter = mdo->backedge_count();
 155   _state = mdo->is_mature()? mature_state: immature_state;
 156 
 157   _eflags = mdo->eflags();
 158   _arg_local = mdo->arg_local();
 159   _arg_stack = mdo->arg_stack();
 160   _arg_returned  = mdo->arg_returned();
 161 #ifndef PRODUCT
 162   if (ReplayCompiles) {
 163     ciReplay::initialize(this);
 164   }
 165 #endif
 166 }
 167 
 168 void ciReceiverTypeData::translate_receiver_data_from(const ProfileData* data) {
 169   for (uint row = 0; row < row_limit(); row++) {
 170     Klass* k = data->as_ReceiverTypeData()->receiver(row);
 171     if (k != NULL) {
 172       ciKlass* klass = CURRENT_ENV->get_klass(k);
 173       CURRENT_ENV->ensure_metadata_alive(klass);
 174       set_receiver(row, klass);
 175     }
 176   }
 177 }
 178 
 179 
 180 void ciTypeStackSlotEntries::translate_type_data_from(const TypeStackSlotEntries* entries) {
 181   for (int i = 0; i < number_of_entries(); i++) {
 182     intptr_t k = entries->type(i);
 183     TypeStackSlotEntries::set_type(i, translate_klass(k));
 184   }
 185 }
 186 
 187 void ciReturnTypeEntry::translate_type_data_from(const ReturnTypeEntry* ret) {
 188   intptr_t k = ret->type();
 189   set_type(translate_klass(k));
 190 }
 191 
 192 void ciSpeculativeTrapData::translate_from(const ProfileData* data) {
 193   Method* m = data->as_SpeculativeTrapData()->method();
 194   ciMethod* ci_m = CURRENT_ENV->get_method(m);
 195   CURRENT_ENV->ensure_metadata_alive(ci_m);
 196   set_method(ci_m);
 197 }
 198 
 199 // Get the data at an arbitrary (sort of) data index.
 200 ciProfileData* ciMethodData::data_at(int data_index) {
 201   if (out_of_bounds(data_index)) {
 202     return NULL;
 203   }
 204   DataLayout* data_layout = data_layout_at(data_index);
 205 
 206   switch (data_layout->tag()) {
 207   case DataLayout::no_tag:
 208   default:
 209     ShouldNotReachHere();
 210     return NULL;
 211   case DataLayout::bit_data_tag:
 212     return new ciBitData(data_layout);
 213   case DataLayout::counter_data_tag:
 214     return new ciCounterData(data_layout);
 215   case DataLayout::jump_data_tag:
 216     return new ciJumpData(data_layout);
 217   case DataLayout::receiver_type_data_tag:
 218     return new ciReceiverTypeData(data_layout);
 219   case DataLayout::virtual_call_data_tag:
 220     return new ciVirtualCallData(data_layout);
 221   case DataLayout::ret_data_tag:
 222     return new ciRetData(data_layout);
 223   case DataLayout::branch_data_tag:
 224     return new ciBranchData(data_layout);
 225   case DataLayout::multi_branch_data_tag:
 226     return new ciMultiBranchData(data_layout);
 227   case DataLayout::arg_info_data_tag:
 228     return new ciArgInfoData(data_layout);
 229   case DataLayout::call_type_data_tag:
 230     return new ciCallTypeData(data_layout);
 231   case DataLayout::virtual_call_type_data_tag:
 232     return new ciVirtualCallTypeData(data_layout);
 233   case DataLayout::parameters_type_data_tag:
 234     return new ciParametersTypeData(data_layout);
 235   };
 236 }
 237 
 238 // Iteration over data.
 239 ciProfileData* ciMethodData::next_data(ciProfileData* current) {
 240   int current_index = dp_to_di(current->dp());
 241   int next_index = current_index + current->size_in_bytes();
 242   ciProfileData* next = data_at(next_index);
 243   return next;
 244 }
 245 
 246 ciProfileData* ciMethodData::bci_to_extra_data(int bci, ciMethod* m, bool& two_free_slots) {
 247   DataLayout* dp  = data_layout_at(data_size());
 248   DataLayout* end = data_layout_at(data_size() + extra_data_size());
 249   two_free_slots = false;
 250   for (;dp < end; dp = MethodData::next_extra(dp)) {
 251     switch(dp->tag()) {
 252     case DataLayout::no_tag:
 253       _saw_free_extra_data = true;  // observed an empty slot (common case)
 254       two_free_slots = (MethodData::next_extra(dp)->tag() == DataLayout::no_tag);
 255       return NULL;
 256     case DataLayout::arg_info_data_tag:
 257       return NULL; // ArgInfoData is at the end of extra data section.
 258     case DataLayout::bit_data_tag:
 259       if (m == NULL && dp->bci() == bci) {
 260         return new ciBitData(dp);
 261       }
 262       break;
 263     case DataLayout::speculative_trap_data_tag: {
 264       ciSpeculativeTrapData* data = new ciSpeculativeTrapData(dp);
 265       // data->method() might be null if the MDO is snapshotted
 266       // concurrently with a trap
 267       if (m != NULL && data->method() == m && dp->bci() == bci) {
 268         return data;
 269       }
 270       break;
 271     }
 272     default:
 273       fatal(err_msg("bad tag = %d", dp->tag()));
 274     }
 275   }
 276   return NULL;
 277 }
 278 
 279 // Translate a bci to its corresponding data, or NULL.
 280 ciProfileData* ciMethodData::bci_to_data(int bci, ciMethod* m) {
 281   // If m is not NULL we look for a SpeculativeTrapData entry
 282   if (m == NULL) {
 283     ciProfileData* data = data_before(bci);
 284     for ( ; is_valid(data); data = next_data(data)) {
 285       if (data->bci() == bci) {
 286         set_hint_di(dp_to_di(data->dp()));
 287         return data;
 288       } else if (data->bci() > bci) {
 289         break;
 290       }
 291     }
 292   }
 293   bool two_free_slots = false;
 294   ciProfileData* result = bci_to_extra_data(bci, m, two_free_slots);
 295   if (result != NULL) {
 296     return result;
 297   }
 298   if (m != NULL && !two_free_slots) {
 299     // We were looking for a SpeculativeTrapData entry we didn't
 300     // find. Room is not available for more SpeculativeTrapData
 301     // entries, look in the non SpeculativeTrapData entries.
 302     return bci_to_data(bci, NULL);
 303   }
 304   return NULL;
 305 }
 306 
 307 // Conservatively decode the trap_state of a ciProfileData.
 308 int ciMethodData::has_trap_at(ciProfileData* data, int reason) {
 309   typedef Deoptimization::DeoptReason DR_t;
 310   int per_bc_reason
 311     = Deoptimization::reason_recorded_per_bytecode_if_any((DR_t) reason);
 312   if (trap_count(reason) == 0) {
 313     // Impossible for this trap to have occurred, regardless of trap_state.
 314     // Note:  This happens if the MDO is empty.
 315     return 0;
 316   } else if (per_bc_reason == Deoptimization::Reason_none) {
 317     // We cannot conclude anything; a trap happened somewhere, maybe here.
 318     return -1;
 319   } else if (data == NULL) {
 320     // No profile here, not even an extra_data record allocated on the fly.
 321     // If there are empty extra_data records, and there had been a trap,
 322     // there would have been a non-null data pointer.  If there are no
 323     // free extra_data records, we must return a conservative -1.
 324     if (_saw_free_extra_data)
 325       return 0;                 // Q.E.D.
 326     else
 327       return -1;                // bail with a conservative answer
 328   } else {
 329     return Deoptimization::trap_state_has_reason(data->trap_state(), per_bc_reason);
 330   }
 331 }
 332 
 333 int ciMethodData::trap_recompiled_at(ciProfileData* data) {
 334   if (data == NULL) {
 335     return (_saw_free_extra_data? 0: -1);  // (see previous method)
 336   } else {
 337     return Deoptimization::trap_state_is_recompiled(data->trap_state())? 1: 0;
 338   }
 339 }
 340 
 341 void ciMethodData::clear_escape_info() {
 342   VM_ENTRY_MARK;
 343   MethodData* mdo = get_MethodData();
 344   if (mdo != NULL) {
 345     mdo->clear_escape_info();
 346     ArgInfoData *aid = arg_info();
 347     int arg_count = (aid == NULL) ? 0 : aid->number_of_args();
 348     for (int i = 0; i < arg_count; i++) {
 349       set_arg_modified(i, 0);
 350     }
 351   }
 352   _eflags = _arg_local = _arg_stack = _arg_returned = 0;
 353 }
 354 
 355 // copy our escape info to the MethodData* if it exists
 356 void ciMethodData::update_escape_info() {
 357   VM_ENTRY_MARK;
 358   MethodData* mdo = get_MethodData();
 359   if ( mdo != NULL) {
 360     mdo->set_eflags(_eflags);
 361     mdo->set_arg_local(_arg_local);
 362     mdo->set_arg_stack(_arg_stack);
 363     mdo->set_arg_returned(_arg_returned);
 364     int arg_count = mdo->method()->size_of_parameters();
 365     for (int i = 0; i < arg_count; i++) {
 366       mdo->set_arg_modified(i, arg_modified(i));
 367     }
 368   }
 369 }
 370 
 371 void ciMethodData::set_compilation_stats(short loops, short blocks) {
 372   VM_ENTRY_MARK;
 373   MethodData* mdo = get_MethodData();
 374   if (mdo != NULL) {
 375     mdo->set_num_loops(loops);
 376     mdo->set_num_blocks(blocks);
 377   }
 378 }
 379 
 380 void ciMethodData::set_would_profile(bool p) {
 381   VM_ENTRY_MARK;
 382   MethodData* mdo = get_MethodData();
 383   if (mdo != NULL) {
 384     mdo->set_would_profile(p);
 385   }
 386 }
 387 
 388 void ciMethodData::set_argument_type(int bci, int i, ciKlass* k) {
 389   VM_ENTRY_MARK;
 390   MethodData* mdo = get_MethodData();
 391   if (mdo != NULL) {
 392     ProfileData* data = mdo->bci_to_data(bci);
 393     if (data->is_CallTypeData()) {
 394       data->as_CallTypeData()->set_argument_type(i, k->get_Klass());
 395     } else {
 396       assert(data->is_VirtualCallTypeData(), "no arguments!");
 397       data->as_VirtualCallTypeData()->set_argument_type(i, k->get_Klass());
 398     }
 399   }
 400 }
 401 
 402 void ciMethodData::set_parameter_type(int i, ciKlass* k) {
 403   VM_ENTRY_MARK;
 404   MethodData* mdo = get_MethodData();
 405   if (mdo != NULL) {
 406     mdo->parameters_type_data()->set_type(i, k->get_Klass());
 407   }
 408 }
 409 
 410 void ciMethodData::set_return_type(int bci, ciKlass* k) {
 411   VM_ENTRY_MARK;
 412   MethodData* mdo = get_MethodData();
 413   if (mdo != NULL) {
 414     ProfileData* data = mdo->bci_to_data(bci);
 415     if (data->is_CallTypeData()) {
 416       data->as_CallTypeData()->set_return_type(k->get_Klass());
 417     } else {
 418       assert(data->is_VirtualCallTypeData(), "no arguments!");
 419       data->as_VirtualCallTypeData()->set_return_type(k->get_Klass());
 420     }
 421   }
 422 }
 423 
 424 bool ciMethodData::has_escape_info() {
 425   return eflag_set(MethodData::estimated);
 426 }
 427 
 428 void ciMethodData::set_eflag(MethodData::EscapeFlag f) {
 429   set_bits(_eflags, f);
 430 }
 431 
 432 void ciMethodData::clear_eflag(MethodData::EscapeFlag f) {
 433   clear_bits(_eflags, f);
 434 }
 435 
 436 bool ciMethodData::eflag_set(MethodData::EscapeFlag f) const {
 437   return mask_bits(_eflags, f) != 0;
 438 }
 439 
 440 void ciMethodData::set_arg_local(int i) {
 441   set_nth_bit(_arg_local, i);
 442 }
 443 
 444 void ciMethodData::set_arg_stack(int i) {
 445   set_nth_bit(_arg_stack, i);
 446 }
 447 
 448 void ciMethodData::set_arg_returned(int i) {
 449   set_nth_bit(_arg_returned, i);
 450 }
 451 
 452 void ciMethodData::set_arg_modified(int arg, uint val) {
 453   ArgInfoData *aid = arg_info();
 454   if (aid == NULL)
 455     return;
 456   assert(arg >= 0 && arg < aid->number_of_args(), "valid argument number");
 457   aid->set_arg_modified(arg, val);
 458 }
 459 
 460 bool ciMethodData::is_arg_local(int i) const {
 461   return is_set_nth_bit(_arg_local, i);
 462 }
 463 
 464 bool ciMethodData::is_arg_stack(int i) const {
 465   return is_set_nth_bit(_arg_stack, i);
 466 }
 467 
 468 bool ciMethodData::is_arg_returned(int i) const {
 469   return is_set_nth_bit(_arg_returned, i);
 470 }
 471 
 472 uint ciMethodData::arg_modified(int arg) const {
 473   ArgInfoData *aid = arg_info();
 474   if (aid == NULL)
 475     return 0;
 476   assert(arg >= 0 && arg < aid->number_of_args(), "valid argument number");
 477   return aid->arg_modified(arg);
 478 }
 479 
 480 ByteSize ciMethodData::offset_of_slot(ciProfileData* data, ByteSize slot_offset_in_data) {
 481   // Get offset within MethodData* of the data array
 482   ByteSize data_offset = MethodData::data_offset();
 483 
 484   // Get cell offset of the ProfileData within data array
 485   int cell_offset = dp_to_di(data->dp());
 486 
 487   // Add in counter_offset, the # of bytes into the ProfileData of counter or flag
 488   int offset = in_bytes(data_offset) + cell_offset + in_bytes(slot_offset_in_data);
 489 
 490   return in_ByteSize(offset);
 491 }
 492 
 493 ciArgInfoData *ciMethodData::arg_info() const {
 494   // Should be last, have to skip all traps.
 495   DataLayout* dp  = data_layout_at(data_size());
 496   DataLayout* end = data_layout_at(data_size() + extra_data_size());
 497   for (; dp < end; dp = MethodData::next_extra(dp)) {
 498     if (dp->tag() == DataLayout::arg_info_data_tag)
 499       return new ciArgInfoData(dp);
 500   }
 501   return NULL;
 502 }
 503 
 504 
 505 // Implementation of the print method.
 506 void ciMethodData::print_impl(outputStream* st) {
 507   ciMetadata::print_impl(st);
 508 }
 509 
 510 void ciMethodData::dump_replay_data_type_helper(outputStream* out, int round, int& count, ProfileData* pdata, ByteSize offset, ciKlass* k) {
 511   if (k != NULL) {
 512     if (round == 0) {
 513       count++;
 514     } else {
 515       out->print(" %d %s", (int)(dp_to_di(pdata->dp() + in_bytes(offset)) / sizeof(intptr_t)), k->name()->as_quoted_ascii());
 516     }
 517   }
 518 }
 519 
 520 template<class T> void ciMethodData::dump_replay_data_receiver_type_helper(outputStream* out, int round, int& count, T* vdata) {
 521   for (uint i = 0; i < vdata->row_limit(); i++) {
 522     dump_replay_data_type_helper(out, round, count, vdata, vdata->receiver_offset(i), vdata->receiver(i));
 523   }
 524 }
 525 
 526 template<class T> void ciMethodData::dump_replay_data_call_type_helper(outputStream* out, int round, int& count, T* call_type_data) {
 527   if (call_type_data->has_arguments()) {
 528     for (int i = 0; i < call_type_data->number_of_arguments(); i++) {
 529       dump_replay_data_type_helper(out, round, count, call_type_data, call_type_data->argument_type_offset(i), call_type_data->valid_argument_type(i));
 530     }
 531   }
 532   if (call_type_data->has_return()) {
 533     dump_replay_data_type_helper(out, round, count, call_type_data, call_type_data->return_type_offset(), call_type_data->valid_return_type());
 534   }
 535 }
 536 
 537 void ciMethodData::dump_replay_data_extra_data_helper(outputStream* out, int round, int& count) {
 538   DataLayout* dp  = data_layout_at(data_size());
 539   DataLayout* end = data_layout_at(data_size() + extra_data_size());
 540 
 541   for (;dp < end; dp = MethodData::next_extra(dp)) {
 542     switch(dp->tag()) {
 543     case DataLayout::no_tag:
 544     case DataLayout::arg_info_data_tag:
 545       return;
 546     case DataLayout::bit_data_tag:
 547       break;
 548     case DataLayout::speculative_trap_data_tag: {
 549       ciSpeculativeTrapData* data = new ciSpeculativeTrapData(dp);
 550       ciMethod* m = data->method();
 551       if (m != NULL) {
 552         if (round == 0) {
 553           count++;
 554         } else {
 555           out->print(" %d ", (int)(dp_to_di(((address)dp) + in_bytes(ciSpeculativeTrapData::method_offset())) / sizeof(intptr_t)));
 556           m->dump_name_as_ascii(out);
 557         }
 558       }
 559       break;
 560     }
 561     default:
 562       fatal(err_msg("bad tag = %d", dp->tag()));
 563     }
 564   }
 565 }
 566 
 567 void ciMethodData::dump_replay_data(outputStream* out) {
 568   ResourceMark rm;
 569   MethodData* mdo = get_MethodData();
 570   Method* method = mdo->method();
 571   Klass* holder = method->method_holder();
 572   out->print("ciMethodData %s %s %s %d %d",
 573              holder->name()->as_quoted_ascii(),
 574              method->name()->as_quoted_ascii(),
 575              method->signature()->as_quoted_ascii(),
 576              _state,
 577              current_mileage());
 578 
 579   // dump the contents of the MDO header as raw data
 580   unsigned char* orig = (unsigned char*)&_orig;
 581   int length = sizeof(_orig);
 582   out->print(" orig %d", length);
 583   for (int i = 0; i < length; i++) {
 584     out->print(" %d", orig[i]);
 585   }
 586 
 587   // dump the MDO data as raw data
 588   int elements = (data_size() + extra_data_size()) / sizeof(intptr_t);
 589   out->print(" data %d", elements);
 590   for (int i = 0; i < elements; i++) {
 591     // We could use INTPTR_FORMAT here but that's a zero justified
 592     // which makes comparing it with the SA version of this output
 593     // harder.
 594 #ifdef _LP64
 595     out->print(" 0x%" FORMAT64_MODIFIER "x", data()[i]);
 596 #else
 597     out->print(" 0x%x", data()[i]);
 598 #endif
 599   }
 600 
 601   // The MDO contained oop references as ciObjects, so scan for those
 602   // and emit pairs of offset and klass name so that they can be
 603   // reconstructed at runtime.  The first round counts the number of
 604   // oop references and the second actually emits them.
 605   ciParametersTypeData* parameters = parameters_type_data();
 606   for (int count = 0, round = 0; round < 2; round++) {
 607     if (round == 1) out->print(" oops %d", count);
 608     ProfileData* pdata = first_data();
 609     for ( ; is_valid(pdata); pdata = next_data(pdata)) {
 610       if (pdata->is_VirtualCallData()) {
 611         ciVirtualCallData* vdata = (ciVirtualCallData*)pdata;
 612         dump_replay_data_receiver_type_helper<ciVirtualCallData>(out, round, count, vdata);
 613         if (pdata->is_VirtualCallTypeData()) {
 614           ciVirtualCallTypeData* call_type_data = (ciVirtualCallTypeData*)pdata;
 615           dump_replay_data_call_type_helper<ciVirtualCallTypeData>(out, round, count, call_type_data);
 616         }
 617       } else if (pdata->is_ReceiverTypeData()) {
 618         ciReceiverTypeData* vdata = (ciReceiverTypeData*)pdata;
 619         dump_replay_data_receiver_type_helper<ciReceiverTypeData>(out, round, count, vdata);
 620       } else if (pdata->is_CallTypeData()) {
 621           ciCallTypeData* call_type_data = (ciCallTypeData*)pdata;
 622           dump_replay_data_call_type_helper<ciCallTypeData>(out, round, count, call_type_data);
 623       }
 624     }
 625     if (parameters != NULL) {
 626       for (int i = 0; i < parameters->number_of_parameters(); i++) {
 627         dump_replay_data_type_helper(out, round, count, parameters, ParametersTypeData::type_offset(i), parameters->valid_parameter_type(i));
 628       }
 629     }
 630   }
 631   for (int count = 0, round = 0; round < 2; round++) {
 632     if (round == 1) out->print(" methods %d", count);
 633     dump_replay_data_extra_data_helper(out, round, count);
 634   }
 635   out->cr();
 636 }
 637 
 638 #ifndef PRODUCT
 639 void ciMethodData::print() {
 640   print_data_on(tty);
 641 }
 642 
 643 void ciMethodData::print_data_on(outputStream* st) {
 644   ResourceMark rm;
 645   ciParametersTypeData* parameters = parameters_type_data();
 646   if (parameters != NULL) {
 647     parameters->print_data_on(st);
 648   }
 649   ciProfileData* data;
 650   for (data = first_data(); is_valid(data); data = next_data(data)) {
 651     st->print("%d", dp_to_di(data->dp()));
 652     st->fill_to(6);
 653     data->print_data_on(st);
 654   }
 655   st->print_cr("--- Extra data:");
 656   DataLayout* dp  = data_layout_at(data_size());
 657   DataLayout* end = data_layout_at(data_size() + extra_data_size());
 658   for (;; dp = MethodData::next_extra(dp)) {
 659     assert(dp < end, "moved past end of extra data");
 660     switch (dp->tag()) {
 661     case DataLayout::no_tag:
 662       continue;
 663     case DataLayout::bit_data_tag:
 664       data = new BitData(dp);
 665       break;
 666     case DataLayout::arg_info_data_tag:
 667       data = new ciArgInfoData(dp);
 668       dp = end; // ArgInfoData is at the end of extra data section.
 669       break;
 670     case DataLayout::speculative_trap_data_tag:
 671       data = new ciSpeculativeTrapData(dp);
 672       break;
 673     default:
 674       fatal(err_msg("unexpected tag %d", dp->tag()));
 675     }
 676     st->print("%d", dp_to_di(data->dp()));
 677     st->fill_to(6);
 678     data->print_data_on(st);
 679     if (dp >= end) return;
 680   }
 681 }
 682 
 683 void ciTypeEntries::print_ciklass(outputStream* st, intptr_t k) {
 684   if (TypeEntries::is_type_none(k)) {
 685     st->print("none");
 686   } else if (TypeEntries::is_type_unknown(k)) {
 687     st->print("unknown");
 688   } else {
 689     valid_ciklass(k)->print_name_on(st);
 690   }
 691   if (TypeEntries::was_null_seen(k)) {
 692     st->print(" (null seen)");
 693   }
 694 }
 695 
 696 void ciTypeStackSlotEntries::print_data_on(outputStream* st) const {
 697   for (int i = 0; i < number_of_entries(); i++) {
 698     _pd->tab(st);
 699     st->print("%d: stack (%u) ", i, stack_slot(i));
 700     print_ciklass(st, type(i));
 701     st->cr();
 702   }
 703 }
 704 
 705 void ciReturnTypeEntry::print_data_on(outputStream* st) const {
 706   _pd->tab(st);
 707   st->print("ret ");
 708   print_ciklass(st, type());
 709   st->cr();
 710 }
 711 
 712 void ciCallTypeData::print_data_on(outputStream* st, const char* extra) const {
 713   print_shared(st, "ciCallTypeData", extra);
 714   if (has_arguments()) {
 715     tab(st, true);
 716     st->print_cr("argument types");
 717     args()->print_data_on(st);
 718   }
 719   if (has_return()) {
 720     tab(st, true);
 721     st->print_cr("return type");
 722     ret()->print_data_on(st);
 723   }
 724 }
 725 
 726 void ciReceiverTypeData::print_receiver_data_on(outputStream* st) const {
 727   uint row;
 728   int entries = 0;
 729   for (row = 0; row < row_limit(); row++) {
 730     if (receiver(row) != NULL)  entries++;
 731   }
 732   st->print_cr("count(%u) entries(%u)", count(), entries);
 733   for (row = 0; row < row_limit(); row++) {
 734     if (receiver(row) != NULL) {
 735       tab(st);
 736       receiver(row)->print_name_on(st);
 737       st->print_cr("(%u)", receiver_count(row));
 738     }
 739   }
 740 }
 741 
 742 void ciReceiverTypeData::print_data_on(outputStream* st, const char* extra) const {
 743   print_shared(st, "ciReceiverTypeData", extra);
 744   print_receiver_data_on(st);
 745 }
 746 
 747 void ciVirtualCallData::print_data_on(outputStream* st, const char* extra) const {
 748   print_shared(st, "ciVirtualCallData", extra);
 749   rtd_super()->print_receiver_data_on(st);
 750 }
 751 
 752 void ciVirtualCallTypeData::print_data_on(outputStream* st, const char* extra) const {
 753   print_shared(st, "ciVirtualCallTypeData", extra);
 754   rtd_super()->print_receiver_data_on(st);
 755   if (has_arguments()) {
 756     tab(st, true);
 757     st->print("argument types");
 758     args()->print_data_on(st);
 759   }
 760   if (has_return()) {
 761     tab(st, true);
 762     st->print("return type");
 763     ret()->print_data_on(st);
 764   }
 765 }
 766 
 767 void ciParametersTypeData::print_data_on(outputStream* st, const char* extra) const {
 768   st->print_cr("ciParametersTypeData");
 769   parameters()->print_data_on(st);
 770 }
 771 
 772 void ciSpeculativeTrapData::print_data_on(outputStream* st, const char* extra) const {
 773   st->print_cr("ciSpeculativeTrapData");
 774   tab(st);
 775   method()->print_short_name(st);
 776   st->cr();
 777 }
 778 #endif