1 /* 2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef SHARE_VM_OPTO_PARSE_HPP 26 #define SHARE_VM_OPTO_PARSE_HPP 27 28 #include "ci/ciMethodData.hpp" 29 #include "ci/ciTypeFlow.hpp" 30 #include "compiler/methodLiveness.hpp" 31 #include "libadt/vectset.hpp" 32 #include "oops/generateOopMap.hpp" 33 #include "opto/graphKit.hpp" 34 #include "opto/subnode.hpp" 35 36 class BytecodeParseHistogram; 37 class InlineTree; 38 class Parse; 39 class SwitchRange; 40 41 42 //------------------------------InlineTree------------------------------------- 43 class InlineTree : public ResourceObj { 44 friend class VMStructs; 45 46 Compile* C; // cache 47 JVMState* _caller_jvms; // state of caller 48 ciMethod* _method; // method being called by the caller_jvms 49 InlineTree* _caller_tree; 50 uint _count_inline_bcs; // Accumulated count of inlined bytecodes 51 // Call-site count / interpreter invocation count, scaled recursively. 52 // Always between 0.0 and 1.0. Represents the percentage of the method's 53 // total execution time used at this call site. 54 const float _site_invoke_ratio; 55 const int _max_inline_level; // the maximum inline level for this sub-tree (may be adjusted) 56 float compute_callee_frequency( int caller_bci ) const; 57 58 GrowableArray<InlineTree*> _subtrees; 59 60 void print_impl(outputStream* stj, int indent) const PRODUCT_RETURN; 61 const char* _msg; 62 protected: 63 InlineTree(Compile* C, 64 const InlineTree* caller_tree, 65 ciMethod* callee_method, 66 JVMState* caller_jvms, 67 int caller_bci, 68 float site_invoke_ratio, 69 int max_inline_level); 70 InlineTree *build_inline_tree_for_callee(ciMethod* callee_method, 71 JVMState* caller_jvms, 72 int caller_bci); 73 bool try_to_inline(ciMethod* callee_method, 74 ciMethod* caller_method, 75 int caller_bci, 76 JVMState* jvms, 77 ciCallProfile& profile, 78 WarmCallInfo* wci_result, 79 bool& should_delay); 80 bool should_inline(ciMethod* callee_method, 81 ciMethod* caller_method, 82 int caller_bci, 83 ciCallProfile& profile, 84 WarmCallInfo* wci_result); 85 bool should_not_inline(ciMethod* callee_method, 86 ciMethod* caller_method, 87 JVMState* jvms, 88 WarmCallInfo* wci_result); 89 void print_inlining(ciMethod* callee_method, int caller_bci, 90 ciMethod* caller_method, bool success) const; 91 92 InlineTree* caller_tree() const { return _caller_tree; } 93 InlineTree* callee_at(int bci, ciMethod* m) const; 94 int inline_level() const { return stack_depth(); } 95 int stack_depth() const { return _caller_jvms ? _caller_jvms->depth() : 0; } 96 const char* msg() const { return _msg; } 97 void set_msg(const char* msg) { _msg = msg; } 98 public: 99 static const char* check_can_parse(ciMethod* callee); 100 101 static InlineTree* build_inline_tree_root(); 102 static InlineTree* find_subtree_from_root(InlineTree* root, JVMState* jvms, ciMethod* callee); 103 104 // For temporary (stack-allocated, stateless) ilts: 105 InlineTree(Compile* c, ciMethod* callee_method, JVMState* caller_jvms, float site_invoke_ratio, int max_inline_level); 106 107 // InlineTree enum 108 enum InlineStyle { 109 Inline_do_not_inline = 0, // 110 Inline_cha_is_monomorphic = 1, // 111 Inline_type_profile_monomorphic = 2 // 112 }; 113 114 // See if it is OK to inline. 115 // The receiver is the inline tree for the caller. 116 // 117 // The result is a temperature indication. If it is hot or cold, 118 // inlining is immediate or undesirable. Otherwise, the info block 119 // returned is newly allocated and may be enqueued. 120 // 121 // If the method is inlinable, a new inline subtree is created on the fly, 122 // and may be accessed by find_subtree_from_root. 123 // The call_method is the dest_method for a special or static invocation. 124 // The call_method is an optimized virtual method candidate otherwise. 125 WarmCallInfo* ok_to_inline(ciMethod *call_method, JVMState* caller_jvms, ciCallProfile& profile, WarmCallInfo* wci, bool& should_delay); 126 127 // Information about inlined method 128 JVMState* caller_jvms() const { return _caller_jvms; } 129 ciMethod *method() const { return _method; } 130 int caller_bci() const { return _caller_jvms ? _caller_jvms->bci() : InvocationEntryBci; } 131 uint count_inline_bcs() const { return _count_inline_bcs; } 132 float site_invoke_ratio() const { return _site_invoke_ratio; }; 133 134 #ifndef PRODUCT 135 private: 136 uint _count_inlines; // Count of inlined methods 137 public: 138 // Debug information collected during parse 139 uint count_inlines() const { return _count_inlines; }; 140 #endif 141 GrowableArray<InlineTree*> subtrees() { return _subtrees; } 142 143 void print_value_on(outputStream* st) const PRODUCT_RETURN; 144 145 bool _forced_inline; // Inlining was forced by CompilerOracle, ciReplay or annotation 146 bool forced_inline() const { return _forced_inline; } 147 // Count number of nodes in this subtree 148 int count() const; 149 // Dump inlining replay data to the stream. 150 void dump_replay_data(outputStream* out); 151 }; 152 153 154 //----------------------------------------------------------------------------- 155 //------------------------------Parse------------------------------------------ 156 // Parse bytecodes, build a Graph 157 class Parse : public GraphKit { 158 public: 159 // Per-block information needed by the parser: 160 class Block { 161 private: 162 ciTypeFlow::Block* _flow; 163 int _pred_count; // how many predecessors in CFG? 164 int _preds_parsed; // how many of these have been parsed? 165 uint _count; // how many times executed? Currently only set by _goto's 166 bool _is_parsed; // has this block been parsed yet? 167 bool _is_handler; // is this block an exception handler? 168 bool _has_merged_backedge; // does this block have merged backedge? 169 SafePointNode* _start_map; // all values flowing into this block 170 MethodLivenessResult _live_locals; // lazily initialized liveness bitmap 171 172 int _num_successors; // Includes only normal control flow. 173 int _all_successors; // Include exception paths also. 174 Block** _successors; 175 176 // Use init_node/init_graph to initialize Blocks. 177 // Block() : _live_locals((uintptr_t*)NULL,0) { ShouldNotReachHere(); } 178 Block() : _live_locals(NULL,0) { ShouldNotReachHere(); } 179 180 public: 181 182 // Set up the block data structure itself. 183 void init_node(Parse* outer, int po); 184 // Set up the block's relations to other blocks. 185 void init_graph(Parse* outer); 186 187 ciTypeFlow::Block* flow() const { return _flow; } 188 int pred_count() const { return _pred_count; } 189 int preds_parsed() const { return _preds_parsed; } 190 bool is_parsed() const { return _is_parsed; } 191 bool is_handler() const { return _is_handler; } 192 void set_count( uint x ) { _count = x; } 193 uint count() const { return _count; } 194 195 SafePointNode* start_map() const { assert(is_merged(),""); return _start_map; } 196 void set_start_map(SafePointNode* m) { assert(!is_merged(), ""); _start_map = m; } 197 198 // True after any predecessor flows control into this block 199 bool is_merged() const { return _start_map != NULL; } 200 201 #ifdef ASSERT 202 // True after backedge predecessor flows control into this block 203 bool has_merged_backedge() const { return _has_merged_backedge; } 204 void mark_merged_backedge(Block* pred) { 205 assert(is_SEL_head(), "should be loop head"); 206 if (pred != NULL && is_SEL_backedge(pred)) { 207 assert(is_parsed(), "block should be parsed before merging backedges"); 208 _has_merged_backedge = true; 209 } 210 } 211 #endif 212 213 // True when all non-exception predecessors have been parsed. 214 bool is_ready() const { return preds_parsed() == pred_count(); } 215 216 int num_successors() const { return _num_successors; } 217 int all_successors() const { return _all_successors; } 218 Block* successor_at(int i) const { 219 assert((uint)i < (uint)all_successors(), ""); 220 return _successors[i]; 221 } 222 Block* successor_for_bci(int bci); 223 224 int start() const { return flow()->start(); } 225 int limit() const { return flow()->limit(); } 226 int rpo() const { return flow()->rpo(); } 227 int start_sp() const { return flow()->stack_size(); } 228 229 bool is_loop_head() const { return flow()->is_loop_head(); } 230 bool is_SEL_head() const { return flow()->is_single_entry_loop_head(); } 231 bool is_SEL_backedge(Block* pred) const{ return is_SEL_head() && pred->rpo() >= rpo(); } 232 bool is_invariant_local(uint i) const { 233 const JVMState* jvms = start_map()->jvms(); 234 if (!jvms->is_loc(i) || flow()->outer()->has_irreducible_entry()) return false; 235 return flow()->is_invariant_local(i - jvms->locoff()); 236 } 237 bool can_elide_SEL_phi(uint i) const { assert(is_SEL_head(),""); return is_invariant_local(i); } 238 239 const Type* peek(int off=0) const { return stack_type_at(start_sp() - (off+1)); } 240 241 const Type* stack_type_at(int i) const; 242 const Type* local_type_at(int i) const; 243 static const Type* get_type(ciType* t) { return Type::get_typeflow_type(t); } 244 245 bool has_trap_at(int bci) const { return flow()->has_trap() && flow()->trap_bci() == bci; } 246 247 // Call this just before parsing a block. 248 void mark_parsed() { 249 assert(!_is_parsed, "must parse each block exactly once"); 250 _is_parsed = true; 251 } 252 253 // Return the phi/region input index for the "current" pred, 254 // and bump the pred number. For historical reasons these index 255 // numbers are handed out in descending order. The last index is 256 // always PhiNode::Input (i.e., 1). The value returned is known 257 // as a "path number" because it distinguishes by which path we are 258 // entering the block. 259 int next_path_num() { 260 assert(preds_parsed() < pred_count(), "too many preds?"); 261 return pred_count() - _preds_parsed++; 262 } 263 264 // Add a previously unaccounted predecessor to this block. 265 // This operates by increasing the size of the block's region 266 // and all its phi nodes (if any). The value returned is a 267 // path number ("pnum"). 268 int add_new_path(); 269 270 // Initialize me by recording the parser's map. My own map must be NULL. 271 void record_state(Parse* outer); 272 }; 273 274 #ifndef PRODUCT 275 // BytecodeParseHistogram collects number of bytecodes parsed, nodes constructed, and transformations. 276 class BytecodeParseHistogram : public ResourceObj { 277 private: 278 enum BPHType { 279 BPH_transforms, 280 BPH_values 281 }; 282 static bool _initialized; 283 static uint _bytecodes_parsed [Bytecodes::number_of_codes]; 284 static uint _nodes_constructed[Bytecodes::number_of_codes]; 285 static uint _nodes_transformed[Bytecodes::number_of_codes]; 286 static uint _new_values [Bytecodes::number_of_codes]; 287 288 Bytecodes::Code _initial_bytecode; 289 int _initial_node_count; 290 int _initial_transforms; 291 int _initial_values; 292 293 Parse *_parser; 294 Compile *_compiler; 295 296 // Initialization 297 static void reset(); 298 299 // Return info being collected, select with global flag 'BytecodeParseInfo' 300 int current_count(BPHType info_selector); 301 302 public: 303 BytecodeParseHistogram(Parse *p, Compile *c); 304 static bool initialized(); 305 306 // Record info when starting to parse one bytecode 307 void set_initial_state( Bytecodes::Code bc ); 308 // Record results of parsing one bytecode 309 void record_change(); 310 311 // Profile printing 312 static void print(float cutoff = 0.01F); // cutoff in percent 313 }; 314 315 public: 316 // Record work done during parsing 317 BytecodeParseHistogram* _parse_histogram; 318 void set_parse_histogram(BytecodeParseHistogram *bph) { _parse_histogram = bph; } 319 BytecodeParseHistogram* parse_histogram() { return _parse_histogram; } 320 #endif 321 322 private: 323 friend class Block; 324 325 // Variables which characterize this compilation as a whole: 326 327 JVMState* _caller; // JVMS which carries incoming args & state. 328 float _expected_uses; // expected number of calls to this code 329 float _prof_factor; // discount applied to my profile counts 330 int _depth; // Inline tree depth, for debug printouts 331 const TypeFunc*_tf; // My kind of function type 332 int _entry_bci; // the osr bci or InvocationEntryBci 333 334 ciTypeFlow* _flow; // Results of previous flow pass. 335 Block* _blocks; // Array of basic-block structs. 336 int _block_count; // Number of elements in _blocks. 337 338 GraphKit _exits; // Record all normal returns and throws here. 339 bool _wrote_final; // Did we write a final field? 340 bool _wrote_volatile; // Did we write a volatile field? 341 bool _wrote_stable; // Did we write a @Stable field? 342 bool _wrote_fields; // Did we write any field? 343 bool _count_invocations; // update and test invocation counter 344 bool _method_data_update; // update method data oop 345 Node* _alloc_with_final; // An allocation node with final field 346 347 // Variables which track Java semantics during bytecode parsing: 348 349 Block* _block; // block currently getting parsed 350 ciBytecodeStream _iter; // stream of this method's bytecodes 351 352 int _blocks_merged; // Progress meter: state merges from BB preds 353 int _blocks_parsed; // Progress meter: BBs actually parsed 354 355 const FastLockNode* _synch_lock; // FastLockNode for synchronized method 356 357 #ifndef PRODUCT 358 int _max_switch_depth; // Debugging SwitchRanges. 359 int _est_switch_depth; // Debugging SwitchRanges. 360 #endif 361 362 bool _first_return; // true if return is the first to be parsed 363 bool _replaced_nodes_for_exceptions; // needs processing of replaced nodes in exception paths? 364 uint _new_idx; // any node with _idx above were new during this parsing. Used to trim the replaced nodes list. 365 366 public: 367 // Constructor 368 Parse(JVMState* caller, ciMethod* parse_method, float expected_uses); 369 370 virtual Parse* is_Parse() const { return (Parse*)this; } 371 372 // Accessors. 373 JVMState* caller() const { return _caller; } 374 float expected_uses() const { return _expected_uses; } 375 float prof_factor() const { return _prof_factor; } 376 int depth() const { return _depth; } 377 const TypeFunc* tf() const { return _tf; } 378 // entry_bci() -- see osr_bci, etc. 379 380 ciTypeFlow* flow() const { return _flow; } 381 // blocks() -- see rpo_at, start_block, etc. 382 int block_count() const { return _block_count; } 383 384 GraphKit& exits() { return _exits; } 385 bool wrote_final() const { return _wrote_final; } 386 void set_wrote_final(bool z) { _wrote_final = z; } 387 bool wrote_volatile() const { return _wrote_volatile; } 388 void set_wrote_volatile(bool z) { _wrote_volatile = z; } 389 bool wrote_stable() const { return _wrote_stable; } 390 void set_wrote_stable(bool z) { _wrote_stable = z; } 391 bool wrote_fields() const { return _wrote_fields; } 392 void set_wrote_fields(bool z) { _wrote_fields = z; } 393 bool count_invocations() const { return _count_invocations; } 394 bool method_data_update() const { return _method_data_update; } 395 Node* alloc_with_final() const { return _alloc_with_final; } 396 void set_alloc_with_final(Node* n) { 397 assert((_alloc_with_final == NULL) || (_alloc_with_final == n), "different init objects?"); 398 _alloc_with_final = n; 399 } 400 401 Block* block() const { return _block; } 402 ciBytecodeStream& iter() { return _iter; } 403 Bytecodes::Code bc() const { return _iter.cur_bc(); } 404 405 void set_block(Block* b) { _block = b; } 406 407 // Derived accessors: 408 bool is_normal_parse() const { return _entry_bci == InvocationEntryBci; } 409 bool is_osr_parse() const { return _entry_bci != InvocationEntryBci; } 410 int osr_bci() const { assert(is_osr_parse(),""); return _entry_bci; } 411 412 void set_parse_bci(int bci); 413 414 // Must this parse be aborted? 415 bool failing() { return C->failing(); } 416 417 Block* rpo_at(int rpo) { 418 assert(0 <= rpo && rpo < _block_count, "oob"); 419 return &_blocks[rpo]; 420 } 421 Block* start_block() { 422 return rpo_at(flow()->start_block()->rpo()); 423 } 424 // Can return NULL if the flow pass did not complete a block. 425 Block* successor_for_bci(int bci) { 426 return block()->successor_for_bci(bci); 427 } 428 429 private: 430 // Create a JVMS & map for the initial state of this method. 431 SafePointNode* create_entry_map(); 432 433 // OSR helpers 434 Node *fetch_interpreter_state(int index, BasicType bt, Node *local_addrs, Node *local_addrs_base); 435 Node* check_interpreter_type(Node* l, const Type* type, SafePointNode* &bad_type_exit); 436 void load_interpreter_state(Node* osr_buf); 437 438 // Functions for managing basic blocks: 439 void init_blocks(); 440 void load_state_from(Block* b); 441 void store_state_to(Block* b) { b->record_state(this); } 442 443 // Parse all the basic blocks. 444 void do_all_blocks(); 445 446 // Parse the current basic block 447 void do_one_block(); 448 449 // Raise an error if we get a bad ciTypeFlow CFG. 450 void handle_missing_successor(int bci); 451 452 // first actions (before BCI 0) 453 void do_method_entry(); 454 455 // implementation of monitorenter/monitorexit 456 void do_monitor_enter(); 457 void do_monitor_exit(); 458 459 // Eagerly create phie throughout the state, to cope with back edges. 460 void ensure_phis_everywhere(); 461 462 // Merge the current mapping into the basic block starting at bci 463 void merge( int target_bci); 464 // Same as plain merge, except that it allocates a new path number. 465 void merge_new_path( int target_bci); 466 // Merge the current mapping into an exception handler. 467 void merge_exception(int target_bci); 468 // Helper: Merge the current mapping into the given basic block 469 void merge_common(Block* target, int pnum); 470 // Helper functions for merging individual cells. 471 PhiNode *ensure_phi( int idx, bool nocreate = false); 472 PhiNode *ensure_memory_phi(int idx, bool nocreate = false); 473 // Helper to merge the current memory state into the given basic block 474 void merge_memory_edges(MergeMemNode* n, int pnum, bool nophi); 475 476 // Parse this bytecode, and alter the Parsers JVM->Node mapping 477 void do_one_bytecode(); 478 479 // helper function to generate array store check 480 void array_store_check(); 481 // Helper function to generate array load 482 void array_load(BasicType etype); 483 // Helper function to generate array store 484 void array_store(BasicType etype); 485 // Helper function to compute array addressing 486 Node* array_addressing(BasicType type, int vals, const Type* *result2=NULL); 487 488 void rtm_deopt(); 489 490 // Pass current map to exits 491 void return_current(Node* value); 492 493 // Register finalizers on return from Object.<init> 494 void call_register_finalizer(); 495 496 // Insert a compiler safepoint into the graph 497 void add_safepoint(); 498 499 // Insert a compiler safepoint into the graph, if there is a back-branch. 500 void maybe_add_safepoint(int target_bci) { 501 if (UseLoopSafepoints && target_bci <= bci()) { 502 add_safepoint(); 503 } 504 } 505 506 // Note: Intrinsic generation routines may be found in library_call.cpp. 507 508 // Helper function to setup Ideal Call nodes 509 void do_call(); 510 511 // Helper function to uncommon-trap or bailout for non-compilable call-sites 512 bool can_not_compile_call_site(ciMethod *dest_method, ciInstanceKlass *klass); 513 514 // Helper function to setup for type-profile based inlining 515 bool prepare_type_profile_inline(ciInstanceKlass* prof_klass, ciMethod* prof_method); 516 517 // Helper functions for type checking bytecodes: 518 void do_checkcast(); 519 void do_instanceof(); 520 521 // Helper functions for shifting & arithmetic 522 void modf(); 523 void modd(); 524 void l2f(); 525 526 void do_irem(); 527 528 // implementation of _get* and _put* bytecodes 529 void do_getstatic() { do_field_access(true, false); } 530 void do_getfield () { do_field_access(true, true); } 531 void do_putstatic() { do_field_access(false, false); } 532 void do_putfield () { do_field_access(false, true); } 533 534 // common code for making initial checks and forming addresses 535 void do_field_access(bool is_get, bool is_field); 536 bool static_field_ok_in_clinit(ciField *field, ciMethod *method); 537 538 // common code for actually performing the load or store 539 void do_get_xxx(Node* obj, ciField* field, bool is_field); 540 void do_put_xxx(Node* obj, ciField* field, bool is_field); 541 542 // implementation of object creation bytecodes 543 void emit_guard_for_new(ciInstanceKlass* klass); 544 void do_new(); 545 void do_newarray(BasicType elemtype); 546 void do_anewarray(); 547 void do_multianewarray(); 548 Node* expand_multianewarray(ciArrayKlass* array_klass, Node* *lengths, int ndimensions, int nargs); 549 550 // implementation of jsr/ret 551 void do_jsr(); 552 void do_ret(); 553 554 float dynamic_branch_prediction(float &cnt, BoolTest::mask btest, Node* test); 555 float branch_prediction(float &cnt, BoolTest::mask btest, int target_bci, Node* test); 556 bool seems_never_taken(float prob) const; 557 bool path_is_suitable_for_uncommon_trap(float prob) const; 558 bool seems_stable_comparison() const; 559 560 void do_ifnull(BoolTest::mask btest, Node* c); 561 void do_if(BoolTest::mask btest, Node* c); 562 int repush_if_args(); 563 void adjust_map_after_if(BoolTest::mask btest, Node* c, float prob, 564 Block* path, Block* other_path); 565 void sharpen_type_after_if(BoolTest::mask btest, 566 Node* con, const Type* tcon, 567 Node* val, const Type* tval); 568 IfNode* jump_if_fork_int(Node* a, Node* b, BoolTest::mask mask); 569 Node* jump_if_join(Node* iffalse, Node* iftrue); 570 void jump_if_true_fork(IfNode *ifNode, int dest_bci_if_true, int prof_table_index); 571 void jump_if_false_fork(IfNode *ifNode, int dest_bci_if_false, int prof_table_index); 572 void jump_if_always_fork(int dest_bci_if_true, int prof_table_index); 573 574 friend class SwitchRange; 575 void do_tableswitch(); 576 void do_lookupswitch(); 577 void jump_switch_ranges(Node* a, SwitchRange* lo, SwitchRange* hi, int depth = 0); 578 bool create_jump_tables(Node* a, SwitchRange* lo, SwitchRange* hi); 579 580 void decrement_age(); 581 // helper functions for methodData style profiling 582 void test_counter_against_threshold(Node* cnt, int limit); 583 void increment_and_test_invocation_counter(int limit); 584 void test_for_osr_md_counter_at(ciMethodData* md, ciProfileData* data, ByteSize offset, int limit); 585 Node* method_data_addressing(ciMethodData* md, ciProfileData* data, ByteSize offset, Node* idx = NULL, uint stride = 0); 586 void increment_md_counter_at(ciMethodData* md, ciProfileData* data, ByteSize offset, Node* idx = NULL, uint stride = 0); 587 void set_md_flag_at(ciMethodData* md, ciProfileData* data, int flag_constant); 588 589 void profile_method_entry(); 590 void profile_taken_branch(int target_bci, bool force_update = false); 591 void profile_not_taken_branch(bool force_update = false); 592 void profile_call(Node* receiver); 593 void profile_generic_call(); 594 void profile_receiver_type(Node* receiver); 595 void profile_ret(int target_bci); 596 void profile_null_checkcast(); 597 void profile_switch_case(int table_index); 598 599 // helper function for call statistics 600 void count_compiled_calls(bool at_method_entry, bool is_inline) PRODUCT_RETURN; 601 602 Node_Notes* make_node_notes(Node_Notes* caller_nn); 603 604 // Helper functions for handling normal and abnormal exits. 605 void build_exits(); 606 607 // Fix up all exceptional control flow exiting a single bytecode. 608 void do_exceptions(); 609 610 // Fix up all exiting control flow at the end of the parse. 611 void do_exits(); 612 613 // Add Catch/CatchProjs 614 // The call is either a Java call or the VM's rethrow stub 615 void catch_call_exceptions(ciExceptionHandlerStream&); 616 617 // Handle all exceptions thrown by the inlined method. 618 // Also handles exceptions for individual bytecodes. 619 void catch_inline_exceptions(SafePointNode* ex_map); 620 621 // Merge the given map into correct exceptional exit state. 622 // Assumes that there is no applicable local handler. 623 void throw_to_exit(SafePointNode* ex_map); 624 625 // Use speculative type to optimize CmpP node 626 Node* optimize_cmp_with_klass(Node* c); 627 628 public: 629 #ifndef PRODUCT 630 // Handle PrintOpto, etc. 631 void show_parse_info(); 632 void dump_map_adr_mem() const; 633 static void print_statistics(); // Print some performance counters 634 void dump(); 635 void dump_bci(int bci); 636 #endif 637 }; 638 639 #endif // SHARE_VM_OPTO_PARSE_HPP