src/share/vm/opto/parse.hpp

Wed, 22 Jan 2014 17:42:23 -0800

author
kvn
date
Wed, 22 Jan 2014 17:42:23 -0800
changeset 6503
a9becfeecd1b
parent 6502
3514ee402842
parent 6217
849eb7bfceac
child 6518
62c54fcc0a35
permissions
-rw-r--r--

Merge

duke@435 1 /*
mikael@6198 2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
duke@435 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435 4 *
duke@435 5 * This code is free software; you can redistribute it and/or modify it
duke@435 6 * under the terms of the GNU General Public License version 2 only, as
duke@435 7 * published by the Free Software Foundation.
duke@435 8 *
duke@435 9 * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435 12 * version 2 for more details (a copy is included in the LICENSE file that
duke@435 13 * accompanied this code).
duke@435 14 *
duke@435 15 * You should have received a copy of the GNU General Public License version
duke@435 16 * 2 along with this work; if not, write to the Free Software Foundation,
duke@435 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435 18 *
trims@1907 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907 20 * or visit www.oracle.com if you need additional information or have any
trims@1907 21 * questions.
duke@435 22 *
duke@435 23 */
duke@435 24
stefank@2314 25 #ifndef SHARE_VM_OPTO_PARSE_HPP
stefank@2314 26 #define SHARE_VM_OPTO_PARSE_HPP
stefank@2314 27
stefank@2314 28 #include "ci/ciMethodData.hpp"
stefank@2314 29 #include "ci/ciTypeFlow.hpp"
stefank@2314 30 #include "compiler/methodLiveness.hpp"
stefank@2314 31 #include "libadt/vectset.hpp"
stefank@2314 32 #include "oops/generateOopMap.hpp"
stefank@2314 33 #include "opto/graphKit.hpp"
stefank@2314 34 #include "opto/subnode.hpp"
stefank@2314 35
duke@435 36 class BytecodeParseHistogram;
duke@435 37 class InlineTree;
duke@435 38 class Parse;
duke@435 39 class SwitchRange;
duke@435 40
duke@435 41
duke@435 42 //------------------------------InlineTree-------------------------------------
duke@435 43 class InlineTree : public ResourceObj {
never@3138 44 friend class VMStructs;
never@3138 45
duke@435 46 Compile* C; // cache
duke@435 47 JVMState* _caller_jvms; // state of caller
duke@435 48 ciMethod* _method; // method being called by the caller_jvms
duke@435 49 InlineTree* _caller_tree;
duke@435 50 uint _count_inline_bcs; // Accumulated count of inlined bytecodes
duke@435 51 // Call-site count / interpreter invocation count, scaled recursively.
duke@435 52 // Always between 0.0 and 1.0. Represents the percentage of the method's
duke@435 53 // total execution time used at this call site.
duke@435 54 const float _site_invoke_ratio;
never@2981 55 const int _max_inline_level; // the maximum inline level for this sub-tree (may be adjusted)
duke@435 56 float compute_callee_frequency( int caller_bci ) const;
duke@435 57
duke@435 58 GrowableArray<InlineTree*> _subtrees;
never@3138 59
never@3138 60 void print_impl(outputStream* stj, int indent) const PRODUCT_RETURN;
iignatyev@4660 61 const char* _msg;
duke@435 62 protected:
duke@435 63 InlineTree(Compile* C,
duke@435 64 const InlineTree* caller_tree,
duke@435 65 ciMethod* callee_method,
duke@435 66 JVMState* caller_jvms,
duke@435 67 int caller_bci,
jrose@1592 68 float site_invoke_ratio,
never@2981 69 int max_inline_level);
duke@435 70 InlineTree *build_inline_tree_for_callee(ciMethod* callee_method,
duke@435 71 JVMState* caller_jvms,
duke@435 72 int caller_bci);
iignatyev@4660 73 bool try_to_inline(ciMethod* callee_method,
iignatyev@4660 74 ciMethod* caller_method,
iignatyev@4660 75 int caller_bci,
twisti@5901 76 JVMState* jvms,
iignatyev@4660 77 ciCallProfile& profile,
iignatyev@4660 78 WarmCallInfo* wci_result,
iignatyev@4660 79 bool& should_delay);
iignatyev@4660 80 bool should_inline(ciMethod* callee_method,
iignatyev@4660 81 ciMethod* caller_method,
iignatyev@4660 82 int caller_bci,
iignatyev@4660 83 ciCallProfile& profile,
iignatyev@4660 84 WarmCallInfo* wci_result);
iignatyev@4660 85 bool should_not_inline(ciMethod* callee_method,
iignatyev@4660 86 ciMethod* caller_method,
twisti@5901 87 JVMState* jvms,
iignatyev@4660 88 WarmCallInfo* wci_result);
vlivanov@4532 89 void print_inlining(ciMethod* callee_method, int caller_bci,
iignatyev@4660 90 bool success) const;
duke@435 91
iignatyev@4660 92 InlineTree* caller_tree() const { return _caller_tree; }
duke@435 93 InlineTree* callee_at(int bci, ciMethod* m) const;
never@2981 94 int inline_level() const { return stack_depth(); }
jrose@1592 95 int stack_depth() const { return _caller_jvms ? _caller_jvms->depth() : 0; }
iignatyev@4660 96 const char* msg() const { return _msg; }
iignatyev@4660 97 void set_msg(const char* msg) { _msg = msg; }
duke@435 98 public:
twisti@3100 99 static const char* check_can_parse(ciMethod* callee);
twisti@3100 100
duke@435 101 static InlineTree* build_inline_tree_root();
twisti@3969 102 static InlineTree* find_subtree_from_root(InlineTree* root, JVMState* jvms, ciMethod* callee);
duke@435 103
duke@435 104 // For temporary (stack-allocated, stateless) ilts:
never@2981 105 InlineTree(Compile* c, ciMethod* callee_method, JVMState* caller_jvms, float site_invoke_ratio, int max_inline_level);
duke@435 106
duke@435 107 // InlineTree enum
duke@435 108 enum InlineStyle {
duke@435 109 Inline_do_not_inline = 0, //
duke@435 110 Inline_cha_is_monomorphic = 1, //
duke@435 111 Inline_type_profile_monomorphic = 2 //
duke@435 112 };
duke@435 113
duke@435 114 // See if it is OK to inline.
twisti@1040 115 // The receiver is the inline tree for the caller.
duke@435 116 //
duke@435 117 // The result is a temperature indication. If it is hot or cold,
duke@435 118 // inlining is immediate or undesirable. Otherwise, the info block
duke@435 119 // returned is newly allocated and may be enqueued.
duke@435 120 //
duke@435 121 // If the method is inlinable, a new inline subtree is created on the fly,
duke@435 122 // and may be accessed by find_subtree_from_root.
duke@435 123 // The call_method is the dest_method for a special or static invocation.
duke@435 124 // The call_method is an optimized virtual method candidate otherwise.
roland@4409 125 WarmCallInfo* ok_to_inline(ciMethod *call_method, JVMState* caller_jvms, ciCallProfile& profile, WarmCallInfo* wci, bool& should_delay);
duke@435 126
duke@435 127 // Information about inlined method
duke@435 128 JVMState* caller_jvms() const { return _caller_jvms; }
duke@435 129 ciMethod *method() const { return _method; }
duke@435 130 int caller_bci() const { return _caller_jvms ? _caller_jvms->bci() : InvocationEntryBci; }
duke@435 131 uint count_inline_bcs() const { return _count_inline_bcs; }
duke@435 132 float site_invoke_ratio() const { return _site_invoke_ratio; };
duke@435 133
duke@435 134 #ifndef PRODUCT
duke@435 135 private:
duke@435 136 uint _count_inlines; // Count of inlined methods
duke@435 137 public:
duke@435 138 // Debug information collected during parse
duke@435 139 uint count_inlines() const { return _count_inlines; };
duke@435 140 #endif
duke@435 141 GrowableArray<InlineTree*> subtrees() { return _subtrees; }
never@3138 142
never@3138 143 void print_value_on(outputStream* st) const PRODUCT_RETURN;
kvn@6217 144
kvn@6217 145 bool _forced_inline; // Inlining was forced by CompilerOracle or ciReplay
kvn@6217 146 bool forced_inline() const { return _forced_inline; }
kvn@6217 147 // Count number of nodes in this subtree
kvn@6217 148 int count() const;
kvn@6217 149 // Dump inlining replay data to the stream.
kvn@6217 150 void dump_replay_data(outputStream* out);
duke@435 151 };
duke@435 152
duke@435 153
duke@435 154 //-----------------------------------------------------------------------------
duke@435 155 //------------------------------Parse------------------------------------------
duke@435 156 // Parse bytecodes, build a Graph
duke@435 157 class Parse : public GraphKit {
duke@435 158 public:
duke@435 159 // Per-block information needed by the parser:
duke@435 160 class Block {
duke@435 161 private:
duke@435 162 ciTypeFlow::Block* _flow;
duke@435 163 int _pred_count; // how many predecessors in CFG?
duke@435 164 int _preds_parsed; // how many of these have been parsed?
duke@435 165 uint _count; // how many times executed? Currently only set by _goto's
duke@435 166 bool _is_parsed; // has this block been parsed yet?
duke@435 167 bool _is_handler; // is this block an exception handler?
kvn@2665 168 bool _has_merged_backedge; // does this block have merged backedge?
duke@435 169 SafePointNode* _start_map; // all values flowing into this block
duke@435 170 MethodLivenessResult _live_locals; // lazily initialized liveness bitmap
duke@435 171
duke@435 172 int _num_successors; // Includes only normal control flow.
duke@435 173 int _all_successors; // Include exception paths also.
duke@435 174 Block** _successors;
duke@435 175
duke@435 176 // Use init_node/init_graph to initialize Blocks.
duke@435 177 // Block() : _live_locals((uintptr_t*)NULL,0) { ShouldNotReachHere(); }
duke@435 178 Block() : _live_locals(NULL,0) { ShouldNotReachHere(); }
duke@435 179
duke@435 180 public:
duke@435 181
duke@435 182 // Set up the block data structure itself.
duke@435 183 void init_node(Parse* outer, int po);
duke@435 184 // Set up the block's relations to other blocks.
duke@435 185 void init_graph(Parse* outer);
duke@435 186
duke@435 187 ciTypeFlow::Block* flow() const { return _flow; }
duke@435 188 int pred_count() const { return _pred_count; }
duke@435 189 int preds_parsed() const { return _preds_parsed; }
duke@435 190 bool is_parsed() const { return _is_parsed; }
duke@435 191 bool is_handler() const { return _is_handler; }
duke@435 192 void set_count( uint x ) { _count = x; }
duke@435 193 uint count() const { return _count; }
duke@435 194
duke@435 195 SafePointNode* start_map() const { assert(is_merged(),""); return _start_map; }
duke@435 196 void set_start_map(SafePointNode* m) { assert(!is_merged(), ""); _start_map = m; }
duke@435 197
duke@435 198 // True after any predecessor flows control into this block
duke@435 199 bool is_merged() const { return _start_map != NULL; }
duke@435 200
kvn@2665 201 #ifdef ASSERT
kvn@2665 202 // True after backedge predecessor flows control into this block
kvn@2665 203 bool has_merged_backedge() const { return _has_merged_backedge; }
kvn@2665 204 void mark_merged_backedge(Block* pred) {
kvn@2665 205 assert(is_SEL_head(), "should be loop head");
kvn@2665 206 if (pred != NULL && is_SEL_backedge(pred)) {
kvn@2665 207 assert(is_parsed(), "block should be parsed before merging backedges");
kvn@2665 208 _has_merged_backedge = true;
kvn@2665 209 }
kvn@2665 210 }
kvn@2665 211 #endif
kvn@2665 212
duke@435 213 // True when all non-exception predecessors have been parsed.
duke@435 214 bool is_ready() const { return preds_parsed() == pred_count(); }
duke@435 215
duke@435 216 int num_successors() const { return _num_successors; }
duke@435 217 int all_successors() const { return _all_successors; }
duke@435 218 Block* successor_at(int i) const {
duke@435 219 assert((uint)i < (uint)all_successors(), "");
duke@435 220 return _successors[i];
duke@435 221 }
duke@435 222 Block* successor_for_bci(int bci);
duke@435 223
duke@435 224 int start() const { return flow()->start(); }
duke@435 225 int limit() const { return flow()->limit(); }
never@802 226 int rpo() const { return flow()->rpo(); }
duke@435 227 int start_sp() const { return flow()->stack_size(); }
duke@435 228
never@802 229 bool is_loop_head() const { return flow()->is_loop_head(); }
never@802 230 bool is_SEL_head() const { return flow()->is_single_entry_loop_head(); }
never@802 231 bool is_SEL_backedge(Block* pred) const{ return is_SEL_head() && pred->rpo() >= rpo(); }
never@802 232 bool is_invariant_local(uint i) const {
never@802 233 const JVMState* jvms = start_map()->jvms();
kvn@870 234 if (!jvms->is_loc(i) || flow()->outer()->has_irreducible_entry()) return false;
never@802 235 return flow()->is_invariant_local(i - jvms->locoff());
never@802 236 }
never@802 237 bool can_elide_SEL_phi(uint i) const { assert(is_SEL_head(),""); return is_invariant_local(i); }
never@802 238
duke@435 239 const Type* peek(int off=0) const { return stack_type_at(start_sp() - (off+1)); }
duke@435 240
duke@435 241 const Type* stack_type_at(int i) const;
duke@435 242 const Type* local_type_at(int i) const;
duke@435 243 static const Type* get_type(ciType* t) { return Type::get_typeflow_type(t); }
duke@435 244
duke@435 245 bool has_trap_at(int bci) const { return flow()->has_trap() && flow()->trap_bci() == bci; }
duke@435 246
duke@435 247 // Call this just before parsing a block.
duke@435 248 void mark_parsed() {
duke@435 249 assert(!_is_parsed, "must parse each block exactly once");
duke@435 250 _is_parsed = true;
duke@435 251 }
duke@435 252
duke@435 253 // Return the phi/region input index for the "current" pred,
duke@435 254 // and bump the pred number. For historical reasons these index
duke@435 255 // numbers are handed out in descending order. The last index is
duke@435 256 // always PhiNode::Input (i.e., 1). The value returned is known
duke@435 257 // as a "path number" because it distinguishes by which path we are
duke@435 258 // entering the block.
duke@435 259 int next_path_num() {
duke@435 260 assert(preds_parsed() < pred_count(), "too many preds?");
duke@435 261 return pred_count() - _preds_parsed++;
duke@435 262 }
duke@435 263
duke@435 264 // Add a previously unaccounted predecessor to this block.
duke@435 265 // This operates by increasing the size of the block's region
duke@435 266 // and all its phi nodes (if any). The value returned is a
duke@435 267 // path number ("pnum").
duke@435 268 int add_new_path();
duke@435 269
duke@435 270 // Initialize me by recording the parser's map. My own map must be NULL.
duke@435 271 void record_state(Parse* outer);
duke@435 272 };
duke@435 273
duke@435 274 #ifndef PRODUCT
duke@435 275 // BytecodeParseHistogram collects number of bytecodes parsed, nodes constructed, and transformations.
duke@435 276 class BytecodeParseHistogram : public ResourceObj {
duke@435 277 private:
duke@435 278 enum BPHType {
duke@435 279 BPH_transforms,
duke@435 280 BPH_values
duke@435 281 };
duke@435 282 static bool _initialized;
duke@435 283 static uint _bytecodes_parsed [Bytecodes::number_of_codes];
duke@435 284 static uint _nodes_constructed[Bytecodes::number_of_codes];
duke@435 285 static uint _nodes_transformed[Bytecodes::number_of_codes];
duke@435 286 static uint _new_values [Bytecodes::number_of_codes];
duke@435 287
duke@435 288 Bytecodes::Code _initial_bytecode;
duke@435 289 int _initial_node_count;
duke@435 290 int _initial_transforms;
duke@435 291 int _initial_values;
duke@435 292
duke@435 293 Parse *_parser;
duke@435 294 Compile *_compiler;
duke@435 295
duke@435 296 // Initialization
duke@435 297 static void reset();
duke@435 298
duke@435 299 // Return info being collected, select with global flag 'BytecodeParseInfo'
duke@435 300 int current_count(BPHType info_selector);
duke@435 301
duke@435 302 public:
duke@435 303 BytecodeParseHistogram(Parse *p, Compile *c);
duke@435 304 static bool initialized();
duke@435 305
duke@435 306 // Record info when starting to parse one bytecode
duke@435 307 void set_initial_state( Bytecodes::Code bc );
duke@435 308 // Record results of parsing one bytecode
duke@435 309 void record_change();
duke@435 310
duke@435 311 // Profile printing
duke@435 312 static void print(float cutoff = 0.01F); // cutoff in percent
duke@435 313 };
duke@435 314
duke@435 315 public:
duke@435 316 // Record work done during parsing
duke@435 317 BytecodeParseHistogram* _parse_histogram;
duke@435 318 void set_parse_histogram(BytecodeParseHistogram *bph) { _parse_histogram = bph; }
duke@435 319 BytecodeParseHistogram* parse_histogram() { return _parse_histogram; }
duke@435 320 #endif
duke@435 321
duke@435 322 private:
duke@435 323 friend class Block;
duke@435 324
duke@435 325 // Variables which characterize this compilation as a whole:
duke@435 326
duke@435 327 JVMState* _caller; // JVMS which carries incoming args & state.
duke@435 328 float _expected_uses; // expected number of calls to this code
duke@435 329 float _prof_factor; // discount applied to my profile counts
duke@435 330 int _depth; // Inline tree depth, for debug printouts
duke@435 331 const TypeFunc*_tf; // My kind of function type
duke@435 332 int _entry_bci; // the osr bci or InvocationEntryBci
duke@435 333
duke@435 334 ciTypeFlow* _flow; // Results of previous flow pass.
duke@435 335 Block* _blocks; // Array of basic-block structs.
duke@435 336 int _block_count; // Number of elements in _blocks.
duke@435 337
duke@435 338 GraphKit _exits; // Record all normal returns and throws here.
duke@435 339 bool _wrote_final; // Did we write a final field?
goetz@6502 340 bool _wrote_volatile; // Did we write a volatile field?
goetz@6502 341 bool _count_invocations; // update and test invocation counter
duke@435 342 bool _method_data_update; // update method data oop
kvn@5110 343 Node* _alloc_with_final; // An allocation node with final field
duke@435 344
duke@435 345 // Variables which track Java semantics during bytecode parsing:
duke@435 346
duke@435 347 Block* _block; // block currently getting parsed
duke@435 348 ciBytecodeStream _iter; // stream of this method's bytecodes
duke@435 349
duke@435 350 int _blocks_merged; // Progress meter: state merges from BB preds
duke@435 351 int _blocks_parsed; // Progress meter: BBs actually parsed
duke@435 352
duke@435 353 const FastLockNode* _synch_lock; // FastLockNode for synchronized method
duke@435 354
duke@435 355 #ifndef PRODUCT
duke@435 356 int _max_switch_depth; // Debugging SwitchRanges.
duke@435 357 int _est_switch_depth; // Debugging SwitchRanges.
duke@435 358 #endif
duke@435 359
roland@5981 360 // parser for the caller of the method of this object
roland@5981 361 Parse* const _parent;
roland@5981 362
duke@435 363 public:
duke@435 364 // Constructor
roland@5981 365 Parse(JVMState* caller, ciMethod* parse_method, float expected_uses, Parse* parent);
duke@435 366
duke@435 367 virtual Parse* is_Parse() const { return (Parse*)this; }
duke@435 368
duke@435 369 // Accessors.
duke@435 370 JVMState* caller() const { return _caller; }
duke@435 371 float expected_uses() const { return _expected_uses; }
duke@435 372 float prof_factor() const { return _prof_factor; }
duke@435 373 int depth() const { return _depth; }
duke@435 374 const TypeFunc* tf() const { return _tf; }
duke@435 375 // entry_bci() -- see osr_bci, etc.
duke@435 376
duke@435 377 ciTypeFlow* flow() const { return _flow; }
never@802 378 // blocks() -- see rpo_at, start_block, etc.
duke@435 379 int block_count() const { return _block_count; }
duke@435 380
duke@435 381 GraphKit& exits() { return _exits; }
duke@435 382 bool wrote_final() const { return _wrote_final; }
duke@435 383 void set_wrote_final(bool z) { _wrote_final = z; }
goetz@6502 384 bool wrote_volatile() const { return _wrote_volatile; }
goetz@6502 385 void set_wrote_volatile(bool z) { _wrote_volatile = z; }
duke@435 386 bool count_invocations() const { return _count_invocations; }
duke@435 387 bool method_data_update() const { return _method_data_update; }
kvn@5110 388 Node* alloc_with_final() const { return _alloc_with_final; }
kvn@5110 389 void set_alloc_with_final(Node* n) {
kvn@5110 390 assert((_alloc_with_final == NULL) || (_alloc_with_final == n), "different init objects?");
kvn@5110 391 _alloc_with_final = n;
kvn@5110 392 }
duke@435 393
duke@435 394 Block* block() const { return _block; }
duke@435 395 ciBytecodeStream& iter() { return _iter; }
duke@435 396 Bytecodes::Code bc() const { return _iter.cur_bc(); }
duke@435 397
duke@435 398 void set_block(Block* b) { _block = b; }
duke@435 399
duke@435 400 // Derived accessors:
duke@435 401 bool is_normal_parse() const { return _entry_bci == InvocationEntryBci; }
duke@435 402 bool is_osr_parse() const { return _entry_bci != InvocationEntryBci; }
duke@435 403 int osr_bci() const { assert(is_osr_parse(),""); return _entry_bci; }
duke@435 404
duke@435 405 void set_parse_bci(int bci);
duke@435 406
duke@435 407 // Must this parse be aborted?
duke@435 408 bool failing() { return C->failing(); }
duke@435 409
never@802 410 Block* rpo_at(int rpo) {
never@802 411 assert(0 <= rpo && rpo < _block_count, "oob");
never@802 412 return &_blocks[rpo];
duke@435 413 }
duke@435 414 Block* start_block() {
never@802 415 return rpo_at(flow()->start_block()->rpo());
duke@435 416 }
duke@435 417 // Can return NULL if the flow pass did not complete a block.
duke@435 418 Block* successor_for_bci(int bci) {
duke@435 419 return block()->successor_for_bci(bci);
duke@435 420 }
duke@435 421
roland@5981 422 Parse* parent_parser() const { return _parent; }
roland@5981 423
duke@435 424 private:
duke@435 425 // Create a JVMS & map for the initial state of this method.
duke@435 426 SafePointNode* create_entry_map();
duke@435 427
duke@435 428 // OSR helpers
duke@435 429 Node *fetch_interpreter_state(int index, BasicType bt, Node *local_addrs, Node *local_addrs_base);
duke@435 430 Node* check_interpreter_type(Node* l, const Type* type, SafePointNode* &bad_type_exit);
duke@435 431 void load_interpreter_state(Node* osr_buf);
duke@435 432
duke@435 433 // Functions for managing basic blocks:
duke@435 434 void init_blocks();
duke@435 435 void load_state_from(Block* b);
duke@435 436 void store_state_to(Block* b) { b->record_state(this); }
duke@435 437
duke@435 438 // Parse all the basic blocks.
duke@435 439 void do_all_blocks();
duke@435 440
duke@435 441 // Parse the current basic block
duke@435 442 void do_one_block();
duke@435 443
duke@435 444 // Raise an error if we get a bad ciTypeFlow CFG.
duke@435 445 void handle_missing_successor(int bci);
duke@435 446
duke@435 447 // first actions (before BCI 0)
duke@435 448 void do_method_entry();
duke@435 449
duke@435 450 // implementation of monitorenter/monitorexit
duke@435 451 void do_monitor_enter();
duke@435 452 void do_monitor_exit();
duke@435 453
duke@435 454 // Eagerly create phie throughout the state, to cope with back edges.
duke@435 455 void ensure_phis_everywhere();
duke@435 456
duke@435 457 // Merge the current mapping into the basic block starting at bci
duke@435 458 void merge( int target_bci);
duke@435 459 // Same as plain merge, except that it allocates a new path number.
duke@435 460 void merge_new_path( int target_bci);
duke@435 461 // Merge the current mapping into an exception handler.
duke@435 462 void merge_exception(int target_bci);
duke@435 463 // Helper: Merge the current mapping into the given basic block
duke@435 464 void merge_common(Block* target, int pnum);
duke@435 465 // Helper functions for merging individual cells.
duke@435 466 PhiNode *ensure_phi( int idx, bool nocreate = false);
duke@435 467 PhiNode *ensure_memory_phi(int idx, bool nocreate = false);
duke@435 468 // Helper to merge the current memory state into the given basic block
duke@435 469 void merge_memory_edges(MergeMemNode* n, int pnum, bool nophi);
duke@435 470
duke@435 471 // Parse this bytecode, and alter the Parsers JVM->Node mapping
duke@435 472 void do_one_bytecode();
duke@435 473
duke@435 474 // helper function to generate array store check
duke@435 475 void array_store_check();
duke@435 476 // Helper function to generate array load
duke@435 477 void array_load(BasicType etype);
duke@435 478 // Helper function to generate array store
duke@435 479 void array_store(BasicType etype);
duke@435 480 // Helper function to compute array addressing
duke@435 481 Node* array_addressing(BasicType type, int vals, const Type* *result2=NULL);
duke@435 482
duke@435 483 // Pass current map to exits
duke@435 484 void return_current(Node* value);
duke@435 485
duke@435 486 // Register finalizers on return from Object.<init>
duke@435 487 void call_register_finalizer();
duke@435 488
duke@435 489 // Insert a compiler safepoint into the graph
duke@435 490 void add_safepoint();
duke@435 491
duke@435 492 // Insert a compiler safepoint into the graph, if there is a back-branch.
duke@435 493 void maybe_add_safepoint(int target_bci) {
duke@435 494 if (UseLoopSafepoints && target_bci <= bci()) {
duke@435 495 add_safepoint();
duke@435 496 }
duke@435 497 }
duke@435 498
duke@435 499 // Note: Intrinsic generation routines may be found in library_call.cpp.
duke@435 500
duke@435 501 // Helper function to setup Ideal Call nodes
duke@435 502 void do_call();
duke@435 503
duke@435 504 // Helper function to uncommon-trap or bailout for non-compilable call-sites
duke@435 505 bool can_not_compile_call_site(ciMethod *dest_method, ciInstanceKlass *klass);
duke@435 506
duke@435 507 // Helper function to setup for type-profile based inlining
duke@435 508 bool prepare_type_profile_inline(ciInstanceKlass* prof_klass, ciMethod* prof_method);
duke@435 509
duke@435 510 // Helper functions for type checking bytecodes:
duke@435 511 void do_checkcast();
duke@435 512 void do_instanceof();
duke@435 513
duke@435 514 // Helper functions for shifting & arithmetic
duke@435 515 void modf();
duke@435 516 void modd();
duke@435 517 void l2f();
duke@435 518
duke@435 519 void do_irem();
duke@435 520
duke@435 521 // implementation of _get* and _put* bytecodes
duke@435 522 void do_getstatic() { do_field_access(true, false); }
duke@435 523 void do_getfield () { do_field_access(true, true); }
duke@435 524 void do_putstatic() { do_field_access(false, false); }
duke@435 525 void do_putfield () { do_field_access(false, true); }
duke@435 526
duke@435 527 // common code for making initial checks and forming addresses
duke@435 528 void do_field_access(bool is_get, bool is_field);
duke@435 529 bool static_field_ok_in_clinit(ciField *field, ciMethod *method);
duke@435 530
duke@435 531 // common code for actually performing the load or store
never@2658 532 void do_get_xxx(Node* obj, ciField* field, bool is_field);
never@2658 533 void do_put_xxx(Node* obj, ciField* field, bool is_field);
duke@435 534
duke@435 535 // loading from a constant field or the constant pool
duke@435 536 // returns false if push failed (non-perm field constants only, not ldcs)
vlivanov@5658 537 bool push_constant(ciConstant con, bool require_constant = false, bool is_autobox_cache = false, const Type* basic_type = NULL);
duke@435 538
duke@435 539 // implementation of object creation bytecodes
never@2000 540 void emit_guard_for_new(ciInstanceKlass* klass);
duke@435 541 void do_new();
duke@435 542 void do_newarray(BasicType elemtype);
duke@435 543 void do_anewarray();
duke@435 544 void do_multianewarray();
cfang@1165 545 Node* expand_multianewarray(ciArrayKlass* array_klass, Node* *lengths, int ndimensions, int nargs);
duke@435 546
duke@435 547 // implementation of jsr/ret
duke@435 548 void do_jsr();
duke@435 549 void do_ret();
duke@435 550
duke@435 551 float dynamic_branch_prediction(float &cnt);
duke@435 552 float branch_prediction(float &cnt, BoolTest::mask btest, int target_bci);
duke@435 553 bool seems_never_taken(float prob);
jrose@2101 554 bool seems_stable_comparison(BoolTest::mask btest, Node* c);
duke@435 555
rasbold@683 556 void do_ifnull(BoolTest::mask btest, Node* c);
duke@435 557 void do_if(BoolTest::mask btest, Node* c);
cfang@1607 558 int repush_if_args();
duke@435 559 void adjust_map_after_if(BoolTest::mask btest, Node* c, float prob,
duke@435 560 Block* path, Block* other_path);
kvn@3834 561 void sharpen_type_after_if(BoolTest::mask btest,
kvn@3834 562 Node* con, const Type* tcon,
kvn@3834 563 Node* val, const Type* tval);
duke@435 564 IfNode* jump_if_fork_int(Node* a, Node* b, BoolTest::mask mask);
duke@435 565 Node* jump_if_join(Node* iffalse, Node* iftrue);
duke@435 566 void jump_if_true_fork(IfNode *ifNode, int dest_bci_if_true, int prof_table_index);
duke@435 567 void jump_if_false_fork(IfNode *ifNode, int dest_bci_if_false, int prof_table_index);
duke@435 568 void jump_if_always_fork(int dest_bci_if_true, int prof_table_index);
duke@435 569
duke@435 570 friend class SwitchRange;
duke@435 571 void do_tableswitch();
duke@435 572 void do_lookupswitch();
duke@435 573 void jump_switch_ranges(Node* a, SwitchRange* lo, SwitchRange* hi, int depth = 0);
duke@435 574 bool create_jump_tables(Node* a, SwitchRange* lo, SwitchRange* hi);
duke@435 575
duke@435 576 // helper functions for methodData style profiling
duke@435 577 void test_counter_against_threshold(Node* cnt, int limit);
duke@435 578 void increment_and_test_invocation_counter(int limit);
duke@435 579 void test_for_osr_md_counter_at(ciMethodData* md, ciProfileData* data, ByteSize offset, int limit);
duke@435 580 Node* method_data_addressing(ciMethodData* md, ciProfileData* data, ByteSize offset, Node* idx = NULL, uint stride = 0);
duke@435 581 void increment_md_counter_at(ciMethodData* md, ciProfileData* data, ByteSize offset, Node* idx = NULL, uint stride = 0);
duke@435 582 void set_md_flag_at(ciMethodData* md, ciProfileData* data, int flag_constant);
duke@435 583
duke@435 584 void profile_method_entry();
duke@435 585 void profile_taken_branch(int target_bci, bool force_update = false);
duke@435 586 void profile_not_taken_branch(bool force_update = false);
duke@435 587 void profile_call(Node* receiver);
duke@435 588 void profile_generic_call();
duke@435 589 void profile_receiver_type(Node* receiver);
duke@435 590 void profile_ret(int target_bci);
duke@435 591 void profile_null_checkcast();
duke@435 592 void profile_switch_case(int table_index);
duke@435 593
duke@435 594 // helper function for call statistics
duke@435 595 void count_compiled_calls(bool at_method_entry, bool is_inline) PRODUCT_RETURN;
duke@435 596
duke@435 597 Node_Notes* make_node_notes(Node_Notes* caller_nn);
duke@435 598
duke@435 599 // Helper functions for handling normal and abnormal exits.
duke@435 600 void build_exits();
duke@435 601
duke@435 602 // Fix up all exceptional control flow exiting a single bytecode.
duke@435 603 void do_exceptions();
duke@435 604
duke@435 605 // Fix up all exiting control flow at the end of the parse.
duke@435 606 void do_exits();
duke@435 607
duke@435 608 // Add Catch/CatchProjs
duke@435 609 // The call is either a Java call or the VM's rethrow stub
duke@435 610 void catch_call_exceptions(ciExceptionHandlerStream&);
duke@435 611
duke@435 612 // Handle all exceptions thrown by the inlined method.
duke@435 613 // Also handles exceptions for individual bytecodes.
duke@435 614 void catch_inline_exceptions(SafePointNode* ex_map);
duke@435 615
duke@435 616 // Merge the given map into correct exceptional exit state.
duke@435 617 // Assumes that there is no applicable local handler.
duke@435 618 void throw_to_exit(SafePointNode* ex_map);
duke@435 619
roland@5991 620 // Use speculative type to optimize CmpP node
roland@5991 621 Node* optimize_cmp_with_klass(Node* c);
roland@5991 622
duke@435 623 public:
duke@435 624 #ifndef PRODUCT
duke@435 625 // Handle PrintOpto, etc.
duke@435 626 void show_parse_info();
duke@435 627 void dump_map_adr_mem() const;
duke@435 628 static void print_statistics(); // Print some performance counters
duke@435 629 void dump();
duke@435 630 void dump_bci(int bci);
duke@435 631 #endif
duke@435 632 };
stefank@2314 633
stefank@2314 634 #endif // SHARE_VM_OPTO_PARSE_HPP

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