1 /* 2 * Copyright (c) 1997, 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 #ifndef SHARE_VM_OPTO_COMPILE_HPP 26 #define SHARE_VM_OPTO_COMPILE_HPP 27 28 #include "asm/codeBuffer.hpp" 29 #include "ci/compilerInterface.hpp" 30 #include "code/debugInfoRec.hpp" 31 #include "code/exceptionHandlerTable.hpp" 32 #include "compiler/compilerOracle.hpp" 33 #include "compiler/compileBroker.hpp" 34 #include "libadt/dict.hpp" 35 #include "libadt/port.hpp" 36 #include "libadt/vectset.hpp" 37 #include "memory/resourceArea.hpp" 38 #include "opto/idealGraphPrinter.hpp" 39 #include "opto/phasetype.hpp" 40 #include "opto/phase.hpp" 41 #include "opto/regmask.hpp" 42 #include "runtime/deoptimization.hpp" 43 #include "runtime/vmThread.hpp" 44 #include "trace/tracing.hpp" 45 #include "utilities/ticks.hpp" 46 47 class Block; 48 class Bundle; 49 class C2Compiler; 50 class CallGenerator; 51 class ConnectionGraph; 52 class InlineTree; 53 class Int_Array; 54 class Matcher; 55 class MachConstantNode; 56 class MachConstantBaseNode; 57 class MachNode; 58 class MachOper; 59 class MachSafePointNode; 60 class Node; 61 class Node_Array; 62 class Node_Notes; 63 class OptoReg; 64 class PhaseCFG; 65 class PhaseGVN; 66 class PhaseIterGVN; 67 class PhaseRegAlloc; 68 class PhaseCCP; 69 class PhaseCCP_DCE; 70 class RootNode; 71 class relocInfo; 72 class Scope; 73 class StartNode; 74 class SafePointNode; 75 class JVMState; 76 class Type; 77 class TypeData; 78 class TypeInt; 79 class TypePtr; 80 class TypeOopPtr; 81 class TypeFunc; 82 class Unique_Node_List; 83 class nmethod; 84 class WarmCallInfo; 85 class Node_Stack; 86 struct Final_Reshape_Counts; 87 88 //------------------------------Compile---------------------------------------- 89 // This class defines a top-level Compiler invocation. 90 91 class Compile : public Phase { 92 friend class VMStructs; 93 94 public: 95 // Fixed alias indexes. (See also MergeMemNode.) 96 enum { 97 AliasIdxTop = 1, // pseudo-index, aliases to nothing (used as sentinel value) 98 AliasIdxBot = 2, // pseudo-index, aliases to everything 99 AliasIdxRaw = 3 // hard-wired index for TypeRawPtr::BOTTOM 100 }; 101 102 // Variant of TraceTime(NULL, &_t_accumulator, TimeCompiler); 103 // Integrated with logging. If logging is turned on, and dolog is true, 104 // then brackets are put into the log, with time stamps and node counts. 105 // (The time collection itself is always conditionalized on TimeCompiler.) 106 class TracePhase : public TraceTime { 107 private: 108 Compile* C; 109 CompileLog* _log; 110 const char* _phase_name; 111 bool _dolog; 112 public: 113 TracePhase(const char* name, elapsedTimer* accumulator, bool dolog); 114 ~TracePhase(); 115 }; 116 117 // Information per category of alias (memory slice) 118 class AliasType { 119 private: 120 friend class Compile; 121 122 int _index; // unique index, used with MergeMemNode 123 const TypePtr* _adr_type; // normalized address type 124 ciField* _field; // relevant instance field, or null if none 125 const Type* _element; // relevant array element type, or null if none 126 bool _is_rewritable; // false if the memory is write-once only 127 int _general_index; // if this is type is an instance, the general 128 // type that this is an instance of 129 130 void Init(int i, const TypePtr* at); 131 132 public: 133 int index() const { return _index; } 134 const TypePtr* adr_type() const { return _adr_type; } 135 ciField* field() const { return _field; } 136 const Type* element() const { return _element; } 137 bool is_rewritable() const { return _is_rewritable; } 138 bool is_volatile() const { return (_field ? _field->is_volatile() : false); } 139 int general_index() const { return (_general_index != 0) ? _general_index : _index; } 140 141 void set_rewritable(bool z) { _is_rewritable = z; } 142 void set_field(ciField* f) { 143 assert(!_field,""); 144 _field = f; 145 if (f->is_final() || f->is_stable()) { 146 // In the case of @Stable, multiple writes are possible but may be assumed to be no-ops. 147 _is_rewritable = false; 148 } 149 } 150 void set_element(const Type* e) { 151 assert(_element == NULL, ""); 152 _element = e; 153 } 154 155 BasicType basic_type() const; 156 157 void print_on(outputStream* st) PRODUCT_RETURN; 158 }; 159 160 enum { 161 logAliasCacheSize = 6, 162 AliasCacheSize = (1<<logAliasCacheSize) 163 }; 164 struct AliasCacheEntry { const TypePtr* _adr_type; int _index; }; // simple duple type 165 enum { 166 trapHistLength = MethodData::_trap_hist_limit 167 }; 168 169 // Constant entry of the constant table. 170 class Constant { 171 private: 172 BasicType _type; 173 union { 174 jvalue _value; 175 Metadata* _metadata; 176 } _v; 177 int _offset; // offset of this constant (in bytes) relative to the constant table base. 178 float _freq; 179 bool _can_be_reused; // true (default) if the value can be shared with other users. 180 181 public: 182 Constant() : _type(T_ILLEGAL), _offset(-1), _freq(0.0f), _can_be_reused(true) { _v._value.l = 0; } 183 Constant(BasicType type, jvalue value, float freq = 0.0f, bool can_be_reused = true) : 184 _type(type), 185 _offset(-1), 186 _freq(freq), 187 _can_be_reused(can_be_reused) 188 { 189 assert(type != T_METADATA, "wrong constructor"); 190 _v._value = value; 191 } 192 Constant(Metadata* metadata, bool can_be_reused = true) : 193 _type(T_METADATA), 194 _offset(-1), 195 _freq(0.0f), 196 _can_be_reused(can_be_reused) 197 { 198 _v._metadata = metadata; 199 } 200 201 bool operator==(const Constant& other); 202 203 BasicType type() const { return _type; } 204 205 jlong get_jlong() const { return _v._value.j; } 206 jfloat get_jfloat() const { return _v._value.f; } 207 jdouble get_jdouble() const { return _v._value.d; } 208 jobject get_jobject() const { return _v._value.l; } 209 210 Metadata* get_metadata() const { return _v._metadata; } 211 212 int offset() const { return _offset; } 213 void set_offset(int offset) { _offset = offset; } 214 215 float freq() const { return _freq; } 216 void inc_freq(float freq) { _freq += freq; } 217 218 bool can_be_reused() const { return _can_be_reused; } 219 }; 220 221 // Constant table. 222 class ConstantTable { 223 private: 224 GrowableArray<Constant> _constants; // Constants of this table. 225 int _size; // Size in bytes the emitted constant table takes (including padding). 226 int _table_base_offset; // Offset of the table base that gets added to the constant offsets. 227 int _nof_jump_tables; // Number of jump-tables in this constant table. 228 229 static int qsort_comparator(Constant* a, Constant* b); 230 231 // We use negative frequencies to keep the order of the 232 // jump-tables in which they were added. Otherwise we get into 233 // trouble with relocation. 234 float next_jump_table_freq() { return -1.0f * (++_nof_jump_tables); } 235 236 public: 237 ConstantTable() : 238 _size(-1), 239 _table_base_offset(-1), // We can use -1 here since the constant table is always bigger than 2 bytes (-(size / 2), see MachConstantBaseNode::emit). 240 _nof_jump_tables(0) 241 {} 242 243 int size() const { assert(_size != -1, "not calculated yet"); return _size; } 244 245 int calculate_table_base_offset() const; // AD specific 246 void set_table_base_offset(int x) { assert(_table_base_offset == -1 || x == _table_base_offset, "can't change"); _table_base_offset = x; } 247 int table_base_offset() const { assert(_table_base_offset != -1, "not set yet"); return _table_base_offset; } 248 249 void emit(CodeBuffer& cb); 250 251 // Returns the offset of the last entry (the top) of the constant table. 252 int top_offset() const { assert(_constants.top().offset() != -1, "not bound yet"); return _constants.top().offset(); } 253 254 void calculate_offsets_and_size(); 255 int find_offset(Constant& con) const; 256 257 void add(Constant& con); 258 Constant add(MachConstantNode* n, BasicType type, jvalue value); 259 Constant add(Metadata* metadata); 260 Constant add(MachConstantNode* n, MachOper* oper); 261 Constant add(MachConstantNode* n, jfloat f) { 262 jvalue value; value.f = f; 263 return add(n, T_FLOAT, value); 264 } 265 Constant add(MachConstantNode* n, jdouble d) { 266 jvalue value; value.d = d; 267 return add(n, T_DOUBLE, value); 268 } 269 270 // Jump-table 271 Constant add_jump_table(MachConstantNode* n); 272 void fill_jump_table(CodeBuffer& cb, MachConstantNode* n, GrowableArray<Label*> labels) const; 273 }; 274 275 private: 276 // Fixed parameters to this compilation. 277 const int _compile_id; 278 const bool _save_argument_registers; // save/restore arg regs for trampolines 279 const bool _subsume_loads; // Load can be matched as part of a larger op. 280 const bool _do_escape_analysis; // Do escape analysis. 281 const bool _eliminate_boxing; // Do boxing elimination. 282 ciMethod* _method; // The method being compiled. 283 int _entry_bci; // entry bci for osr methods. 284 const TypeFunc* _tf; // My kind of signature 285 InlineTree* _ilt; // Ditto (temporary). 286 address _stub_function; // VM entry for stub being compiled, or NULL 287 const char* _stub_name; // Name of stub or adapter being compiled, or NULL 288 address _stub_entry_point; // Compile code entry for generated stub, or NULL 289 290 // Control of this compilation. 291 int _num_loop_opts; // Number of iterations for doing loop optimiztions 292 int _max_inline_size; // Max inline size for this compilation 293 int _freq_inline_size; // Max hot method inline size for this compilation 294 int _fixed_slots; // count of frame slots not allocated by the register 295 // allocator i.e. locks, original deopt pc, etc. 296 uintx _max_node_limit; // Max unique node count during a single compilation. 297 // For deopt 298 int _orig_pc_slot; 299 int _orig_pc_slot_offset_in_bytes; 300 301 int _major_progress; // Count of something big happening 302 bool _inlining_progress; // progress doing incremental inlining? 303 bool _inlining_incrementally;// Are we doing incremental inlining (post parse) 304 bool _has_loops; // True if the method _may_ have some loops 305 bool _has_split_ifs; // True if the method _may_ have some split-if 306 bool _has_unsafe_access; // True if the method _may_ produce faults in unsafe loads or stores. 307 bool _has_stringbuilder; // True StringBuffers or StringBuilders are allocated 308 bool _has_boxed_value; // True if a boxed object is allocated 309 int _max_vector_size; // Maximum size of generated vectors 310 uint _trap_hist[trapHistLength]; // Cumulative traps 311 bool _trap_can_recompile; // Have we emitted a recompiling trap? 312 uint _decompile_count; // Cumulative decompilation counts. 313 bool _do_inlining; // True if we intend to do inlining 314 bool _do_scheduling; // True if we intend to do scheduling 315 bool _do_freq_based_layout; // True if we intend to do frequency based block layout 316 bool _do_count_invocations; // True if we generate code to count invocations 317 bool _do_method_data_update; // True if we generate code to update MethodData*s 318 int _AliasLevel; // Locally-adjusted version of AliasLevel flag. 319 bool _print_assembly; // True if we should dump assembly code for this compilation 320 bool _print_inlining; // True if we should print inlining for this compilation 321 bool _print_intrinsics; // True if we should print intrinsics for this compilation 322 #ifndef PRODUCT 323 bool _trace_opto_output; 324 bool _parsed_irreducible_loop; // True if ciTypeFlow detected irreducible loops during parsing 325 #endif 326 bool _has_irreducible_loop; // Found irreducible loops 327 // JSR 292 328 bool _has_method_handle_invokes; // True if this method has MethodHandle invokes. 329 RTMState _rtm_state; // State of Restricted Transactional Memory usage 330 331 // Compilation environment. 332 Arena _comp_arena; // Arena with lifetime equivalent to Compile 333 ciEnv* _env; // CI interface 334 CompileLog* _log; // from CompilerThread 335 const char* _failure_reason; // for record_failure/failing pattern 336 GrowableArray<CallGenerator*>* _intrinsics; // List of intrinsics. 337 GrowableArray<Node*>* _macro_nodes; // List of nodes which need to be expanded before matching. 338 GrowableArray<Node*>* _predicate_opaqs; // List of Opaque1 nodes for the loop predicates. 339 GrowableArray<Node*>* _expensive_nodes; // List of nodes that are expensive to compute and that we'd better not let the GVN freely common 340 GrowableArray<Node*>* _range_check_casts; // List of CastII nodes with a range check dependency 341 ConnectionGraph* _congraph; 342 #ifndef PRODUCT 343 IdealGraphPrinter* _printer; 344 #endif 345 346 347 // Node management 348 uint _unique; // Counter for unique Node indices 349 VectorSet _dead_node_list; // Set of dead nodes 350 uint _dead_node_count; // Number of dead nodes; VectorSet::Size() is O(N). 351 // So use this to keep count and make the call O(1). 352 debug_only(static int _debug_idx;) // Monotonic counter (not reset), use -XX:BreakAtNode=<idx> 353 Arena _node_arena; // Arena for new-space Nodes 354 Arena _old_arena; // Arena for old-space Nodes, lifetime during xform 355 RootNode* _root; // Unique root of compilation, or NULL after bail-out. 356 Node* _top; // Unique top node. (Reset by various phases.) 357 358 Node* _immutable_memory; // Initial memory state 359 360 Node* _recent_alloc_obj; 361 Node* _recent_alloc_ctl; 362 363 // Constant table 364 ConstantTable _constant_table; // The constant table for this compile. 365 MachConstantBaseNode* _mach_constant_base_node; // Constant table base node singleton. 366 367 368 // Blocked array of debugging and profiling information, 369 // tracked per node. 370 enum { _log2_node_notes_block_size = 8, 371 _node_notes_block_size = (1<<_log2_node_notes_block_size) 372 }; 373 GrowableArray<Node_Notes*>* _node_note_array; 374 Node_Notes* _default_node_notes; // default notes for new nodes 375 376 // After parsing and every bulk phase we hang onto the Root instruction. 377 // The RootNode instruction is where the whole program begins. It produces 378 // the initial Control and BOTTOM for everybody else. 379 380 // Type management 381 Arena _Compile_types; // Arena for all types 382 Arena* _type_arena; // Alias for _Compile_types except in Initialize_shared() 383 Dict* _type_dict; // Intern table 384 void* _type_hwm; // Last allocation (see Type::operator new/delete) 385 size_t _type_last_size; // Last allocation size (see Type::operator new/delete) 386 ciMethod* _last_tf_m; // Cache for 387 const TypeFunc* _last_tf; // TypeFunc::make 388 AliasType** _alias_types; // List of alias types seen so far. 389 int _num_alias_types; // Logical length of _alias_types 390 int _max_alias_types; // Physical length of _alias_types 391 AliasCacheEntry _alias_cache[AliasCacheSize]; // Gets aliases w/o data structure walking 392 393 // Parsing, optimization 394 PhaseGVN* _initial_gvn; // Results of parse-time PhaseGVN 395 Unique_Node_List* _for_igvn; // Initial work-list for next round of Iterative GVN 396 WarmCallInfo* _warm_calls; // Sorted work-list for heat-based inlining. 397 398 GrowableArray<CallGenerator*> _late_inlines; // List of CallGenerators to be revisited after 399 // main parsing has finished. 400 GrowableArray<CallGenerator*> _string_late_inlines; // same but for string operations 401 402 GrowableArray<CallGenerator*> _boxing_late_inlines; // same but for boxing operations 403 404 int _late_inlines_pos; // Where in the queue should the next late inlining candidate go (emulate depth first inlining) 405 uint _number_of_mh_late_inlines; // number of method handle late inlining still pending 406 407 408 // Inlining may not happen in parse order which would make 409 // PrintInlining output confusing. Keep track of PrintInlining 410 // pieces in order. 411 class PrintInliningBuffer : public ResourceObj { 412 private: 413 CallGenerator* _cg; 414 stringStream* _ss; 415 416 public: 417 PrintInliningBuffer() 418 : _cg(NULL) { _ss = new stringStream(); } 419 420 stringStream* ss() const { return _ss; } 421 CallGenerator* cg() const { return _cg; } 422 void set_cg(CallGenerator* cg) { _cg = cg; } 423 }; 424 425 GrowableArray<PrintInliningBuffer>* _print_inlining_list; 426 int _print_inlining_idx; 427 428 // Only keep nodes in the expensive node list that need to be optimized 429 void cleanup_expensive_nodes(PhaseIterGVN &igvn); 430 // Use for sorting expensive nodes to bring similar nodes together 431 static int cmp_expensive_nodes(Node** n1, Node** n2); 432 // Expensive nodes list already sorted? 433 bool expensive_nodes_sorted() const; 434 // Remove the speculative part of types and clean up the graph 435 void remove_speculative_types(PhaseIterGVN &igvn); 436 437 void* _replay_inline_data; // Pointer to data loaded from file 438 439 public: 440 441 outputStream* print_inlining_stream() const { 442 return _print_inlining_list->adr_at(_print_inlining_idx)->ss(); 443 } 444 445 void print_inlining_skip(CallGenerator* cg) { 446 if (_print_inlining) { 447 _print_inlining_list->adr_at(_print_inlining_idx)->set_cg(cg); 448 _print_inlining_idx++; 449 _print_inlining_list->insert_before(_print_inlining_idx, PrintInliningBuffer()); 450 } 451 } 452 453 void print_inlining_insert(CallGenerator* cg) { 454 if (_print_inlining) { 455 for (int i = 0; i < _print_inlining_list->length(); i++) { 456 if (_print_inlining_list->adr_at(i)->cg() == cg) { 457 _print_inlining_list->insert_before(i+1, PrintInliningBuffer()); 458 _print_inlining_idx = i+1; 459 _print_inlining_list->adr_at(i)->set_cg(NULL); 460 return; 461 } 462 } 463 ShouldNotReachHere(); 464 } 465 } 466 467 void print_inlining(ciMethod* method, int inline_level, int bci, const char* msg = NULL) { 468 stringStream ss; 469 CompileTask::print_inlining(&ss, method, inline_level, bci, msg); 470 print_inlining_stream()->print("%s", ss.as_string()); 471 } 472 473 void* replay_inline_data() const { return _replay_inline_data; } 474 475 // Dump inlining replay data to the stream. 476 void dump_inline_data(outputStream* out); 477 478 private: 479 // Matching, CFG layout, allocation, code generation 480 PhaseCFG* _cfg; // Results of CFG finding 481 bool _select_24_bit_instr; // We selected an instruction with a 24-bit result 482 bool _in_24_bit_fp_mode; // We are emitting instructions with 24-bit results 483 int _java_calls; // Number of java calls in the method 484 int _inner_loops; // Number of inner loops in the method 485 Matcher* _matcher; // Engine to map ideal to machine instructions 486 PhaseRegAlloc* _regalloc; // Results of register allocation. 487 int _frame_slots; // Size of total frame in stack slots 488 CodeOffsets _code_offsets; // Offsets into the code for various interesting entries 489 RegMask _FIRST_STACK_mask; // All stack slots usable for spills (depends on frame layout) 490 Arena* _indexSet_arena; // control IndexSet allocation within PhaseChaitin 491 void* _indexSet_free_block_list; // free list of IndexSet bit blocks 492 int _interpreter_frame_size; 493 494 uint _node_bundling_limit; 495 Bundle* _node_bundling_base; // Information for instruction bundling 496 497 // Instruction bits passed off to the VM 498 int _method_size; // Size of nmethod code segment in bytes 499 CodeBuffer _code_buffer; // Where the code is assembled 500 int _first_block_size; // Size of unvalidated entry point code / OSR poison code 501 ExceptionHandlerTable _handler_table; // Table of native-code exception handlers 502 ImplicitExceptionTable _inc_table; // Table of implicit null checks in native code 503 OopMapSet* _oop_map_set; // Table of oop maps (one for each safepoint location) 504 static int _CompiledZap_count; // counter compared against CompileZap[First/Last] 505 BufferBlob* _scratch_buffer_blob; // For temporary code buffers. 506 relocInfo* _scratch_locs_memory; // For temporary code buffers. 507 int _scratch_const_size; // For temporary code buffers. 508 bool _in_scratch_emit_size; // true when in scratch_emit_size. 509 510 public: 511 // Accessors 512 513 // The Compile instance currently active in this (compiler) thread. 514 static Compile* current() { 515 return (Compile*) ciEnv::current()->compiler_data(); 516 } 517 518 // ID for this compilation. Useful for setting breakpoints in the debugger. 519 int compile_id() const { return _compile_id; } 520 521 // Does this compilation allow instructions to subsume loads? User 522 // instructions that subsume a load may result in an unschedulable 523 // instruction sequence. 524 bool subsume_loads() const { return _subsume_loads; } 525 /** Do escape analysis. */ 526 bool do_escape_analysis() const { return _do_escape_analysis; } 527 /** Do boxing elimination. */ 528 bool eliminate_boxing() const { return _eliminate_boxing; } 529 /** Do aggressive boxing elimination. */ 530 bool aggressive_unboxing() const { return _eliminate_boxing && AggressiveUnboxing; } 531 bool save_argument_registers() const { return _save_argument_registers; } 532 533 534 // Other fixed compilation parameters. 535 ciMethod* method() const { return _method; } 536 int entry_bci() const { return _entry_bci; } 537 bool is_osr_compilation() const { return _entry_bci != InvocationEntryBci; } 538 bool is_method_compilation() const { return (_method != NULL && !_method->flags().is_native()); } 539 const TypeFunc* tf() const { assert(_tf!=NULL, ""); return _tf; } 540 void init_tf(const TypeFunc* tf) { assert(_tf==NULL, ""); _tf = tf; } 541 InlineTree* ilt() const { return _ilt; } 542 address stub_function() const { return _stub_function; } 543 const char* stub_name() const { return _stub_name; } 544 address stub_entry_point() const { return _stub_entry_point; } 545 546 // Control of this compilation. 547 int fixed_slots() const { assert(_fixed_slots >= 0, ""); return _fixed_slots; } 548 void set_fixed_slots(int n) { _fixed_slots = n; } 549 int major_progress() const { return _major_progress; } 550 void set_inlining_progress(bool z) { _inlining_progress = z; } 551 int inlining_progress() const { return _inlining_progress; } 552 void set_inlining_incrementally(bool z) { _inlining_incrementally = z; } 553 int inlining_incrementally() const { return _inlining_incrementally; } 554 void set_major_progress() { _major_progress++; } 555 void clear_major_progress() { _major_progress = 0; } 556 int num_loop_opts() const { return _num_loop_opts; } 557 void set_num_loop_opts(int n) { _num_loop_opts = n; } 558 int max_inline_size() const { return _max_inline_size; } 559 void set_freq_inline_size(int n) { _freq_inline_size = n; } 560 int freq_inline_size() const { return _freq_inline_size; } 561 void set_max_inline_size(int n) { _max_inline_size = n; } 562 bool has_loops() const { return _has_loops; } 563 void set_has_loops(bool z) { _has_loops = z; } 564 bool has_split_ifs() const { return _has_split_ifs; } 565 void set_has_split_ifs(bool z) { _has_split_ifs = z; } 566 bool has_unsafe_access() const { return _has_unsafe_access; } 567 void set_has_unsafe_access(bool z) { _has_unsafe_access = z; } 568 bool has_stringbuilder() const { return _has_stringbuilder; } 569 void set_has_stringbuilder(bool z) { _has_stringbuilder = z; } 570 bool has_boxed_value() const { return _has_boxed_value; } 571 void set_has_boxed_value(bool z) { _has_boxed_value = z; } 572 int max_vector_size() const { return _max_vector_size; } 573 void set_max_vector_size(int s) { _max_vector_size = s; } 574 void set_trap_count(uint r, uint c) { assert(r < trapHistLength, "oob"); _trap_hist[r] = c; } 575 uint trap_count(uint r) const { assert(r < trapHistLength, "oob"); return _trap_hist[r]; } 576 bool trap_can_recompile() const { return _trap_can_recompile; } 577 void set_trap_can_recompile(bool z) { _trap_can_recompile = z; } 578 uint decompile_count() const { return _decompile_count; } 579 void set_decompile_count(uint c) { _decompile_count = c; } 580 bool allow_range_check_smearing() const; 581 bool do_inlining() const { return _do_inlining; } 582 void set_do_inlining(bool z) { _do_inlining = z; } 583 bool do_scheduling() const { return _do_scheduling; } 584 void set_do_scheduling(bool z) { _do_scheduling = z; } 585 bool do_freq_based_layout() const{ return _do_freq_based_layout; } 586 void set_do_freq_based_layout(bool z){ _do_freq_based_layout = z; } 587 bool do_count_invocations() const{ return _do_count_invocations; } 588 void set_do_count_invocations(bool z){ _do_count_invocations = z; } 589 bool do_method_data_update() const { return _do_method_data_update; } 590 void set_do_method_data_update(bool z) { _do_method_data_update = z; } 591 int AliasLevel() const { return _AliasLevel; } 592 bool print_assembly() const { return _print_assembly; } 593 void set_print_assembly(bool z) { _print_assembly = z; } 594 bool print_inlining() const { return _print_inlining; } 595 void set_print_inlining(bool z) { _print_inlining = z; } 596 bool print_intrinsics() const { return _print_intrinsics; } 597 void set_print_intrinsics(bool z) { _print_intrinsics = z; } 598 RTMState rtm_state() const { return _rtm_state; } 599 void set_rtm_state(RTMState s) { _rtm_state = s; } 600 bool use_rtm() const { return (_rtm_state & NoRTM) == 0; } 601 bool profile_rtm() const { return _rtm_state == ProfileRTM; } 602 uint max_node_limit() const { return (uint)_max_node_limit; } 603 void set_max_node_limit(uint n) { _max_node_limit = n; } 604 605 // check the CompilerOracle for special behaviours for this compile 606 bool method_has_option(const char * option) { 607 return method() != NULL && method()->has_option(option); 608 } 609 template<typename T> 610 bool method_has_option_value(const char * option, T& value) { 611 return method() != NULL && method()->has_option_value(option, value); 612 } 613 #ifndef PRODUCT 614 bool trace_opto_output() const { return _trace_opto_output; } 615 bool parsed_irreducible_loop() const { return _parsed_irreducible_loop; } 616 void set_parsed_irreducible_loop(bool z) { _parsed_irreducible_loop = z; } 617 int _in_dump_cnt; // Required for dumping ir nodes. 618 #endif 619 bool has_irreducible_loop() const { return _has_irreducible_loop; } 620 void set_has_irreducible_loop(bool z) { _has_irreducible_loop = z; } 621 622 // JSR 292 623 bool has_method_handle_invokes() const { return _has_method_handle_invokes; } 624 void set_has_method_handle_invokes(bool z) { _has_method_handle_invokes = z; } 625 626 Ticks _latest_stage_start_counter; 627 628 void begin_method() { 629 #ifndef PRODUCT 630 if (_printer) _printer->begin_method(this); 631 #endif 632 C->_latest_stage_start_counter.stamp(); 633 } 634 635 void print_method(CompilerPhaseType cpt, int level = 1) { 636 EventCompilerPhase event; 637 if (event.should_commit()) { 638 event.set_starttime(C->_latest_stage_start_counter); 639 event.set_phase((u1) cpt); 640 event.set_compileID(C->_compile_id); 641 event.set_phaseLevel(level); 642 event.commit(); 643 } 644 645 646 #ifndef PRODUCT 647 if (_printer) _printer->print_method(this, CompilerPhaseTypeHelper::to_string(cpt), level); 648 #endif 649 C->_latest_stage_start_counter.stamp(); 650 } 651 652 void end_method(int level = 1) { 653 EventCompilerPhase event; 654 if (event.should_commit()) { 655 event.set_starttime(C->_latest_stage_start_counter); 656 event.set_phase((u1) PHASE_END); 657 event.set_compileID(C->_compile_id); 658 event.set_phaseLevel(level); 659 event.commit(); 660 } 661 #ifndef PRODUCT 662 if (_printer) _printer->end_method(); 663 #endif 664 } 665 666 int macro_count() const { return _macro_nodes->length(); } 667 int predicate_count() const { return _predicate_opaqs->length();} 668 int expensive_count() const { return _expensive_nodes->length(); } 669 Node* macro_node(int idx) const { return _macro_nodes->at(idx); } 670 Node* predicate_opaque1_node(int idx) const { return _predicate_opaqs->at(idx);} 671 Node* expensive_node(int idx) const { return _expensive_nodes->at(idx); } 672 ConnectionGraph* congraph() { return _congraph;} 673 void set_congraph(ConnectionGraph* congraph) { _congraph = congraph;} 674 void add_macro_node(Node * n) { 675 //assert(n->is_macro(), "must be a macro node"); 676 assert(!_macro_nodes->contains(n), "duplicate entry in expand list"); 677 _macro_nodes->append(n); 678 } 679 void remove_macro_node(Node * n) { 680 // this function may be called twice for a node so check 681 // that the node is in the array before attempting to remove it 682 if (_macro_nodes->contains(n)) 683 _macro_nodes->remove(n); 684 // remove from _predicate_opaqs list also if it is there 685 if (predicate_count() > 0 && _predicate_opaqs->contains(n)){ 686 _predicate_opaqs->remove(n); 687 } 688 } 689 void add_expensive_node(Node * n); 690 void remove_expensive_node(Node * n) { 691 if (_expensive_nodes->contains(n)) { 692 _expensive_nodes->remove(n); 693 } 694 } 695 void add_predicate_opaq(Node * n) { 696 assert(!_predicate_opaqs->contains(n), "duplicate entry in predicate opaque1"); 697 assert(_macro_nodes->contains(n), "should have already been in macro list"); 698 _predicate_opaqs->append(n); 699 } 700 701 // Range check dependent CastII nodes that can be removed after loop optimizations 702 void add_range_check_cast(Node* n); 703 void remove_range_check_cast(Node* n) { 704 if (_range_check_casts->contains(n)) { 705 _range_check_casts->remove(n); 706 } 707 } 708 Node* range_check_cast_node(int idx) const { return _range_check_casts->at(idx); } 709 int range_check_cast_count() const { return _range_check_casts->length(); } 710 // Remove all range check dependent CastIINodes. 711 void remove_range_check_casts(PhaseIterGVN &igvn); 712 713 // remove the opaque nodes that protect the predicates so that the unused checks and 714 // uncommon traps will be eliminated from the graph. 715 void cleanup_loop_predicates(PhaseIterGVN &igvn); 716 bool is_predicate_opaq(Node * n) { 717 return _predicate_opaqs->contains(n); 718 } 719 720 // Are there candidate expensive nodes for optimization? 721 bool should_optimize_expensive_nodes(PhaseIterGVN &igvn); 722 // Check whether n1 and n2 are similar 723 static int cmp_expensive_nodes(Node* n1, Node* n2); 724 // Sort expensive nodes to locate similar expensive nodes 725 void sort_expensive_nodes(); 726 727 // Compilation environment. 728 Arena* comp_arena() { return &_comp_arena; } 729 ciEnv* env() const { return _env; } 730 CompileLog* log() const { return _log; } 731 bool failing() const { return _env->failing() || _failure_reason != NULL; } 732 const char* failure_reason() { return _failure_reason; } 733 bool failure_reason_is(const char* r) { return (r==_failure_reason) || (r!=NULL && _failure_reason!=NULL && strcmp(r, _failure_reason)==0); } 734 735 void record_failure(const char* reason); 736 void record_method_not_compilable(const char* reason, bool all_tiers = false) { 737 // All bailouts cover "all_tiers" when TieredCompilation is off. 738 if (!TieredCompilation) all_tiers = true; 739 env()->record_method_not_compilable(reason, all_tiers); 740 // Record failure reason. 741 record_failure(reason); 742 } 743 void record_method_not_compilable_all_tiers(const char* reason) { 744 record_method_not_compilable(reason, true); 745 } 746 bool check_node_count(uint margin, const char* reason) { 747 if (live_nodes() + margin > max_node_limit()) { 748 record_method_not_compilable(reason); 749 return true; 750 } else { 751 return false; 752 } 753 } 754 755 // Node management 756 uint unique() const { return _unique; } 757 uint next_unique() { return _unique++; } 758 void set_unique(uint i) { _unique = i; } 759 static int debug_idx() { return debug_only(_debug_idx)+0; } 760 static void set_debug_idx(int i) { debug_only(_debug_idx = i); } 761 Arena* node_arena() { return &_node_arena; } 762 Arena* old_arena() { return &_old_arena; } 763 RootNode* root() const { return _root; } 764 void set_root(RootNode* r) { _root = r; } 765 StartNode* start() const; // (Derived from root.) 766 void init_start(StartNode* s); 767 Node* immutable_memory(); 768 769 Node* recent_alloc_ctl() const { return _recent_alloc_ctl; } 770 Node* recent_alloc_obj() const { return _recent_alloc_obj; } 771 void set_recent_alloc(Node* ctl, Node* obj) { 772 _recent_alloc_ctl = ctl; 773 _recent_alloc_obj = obj; 774 } 775 void record_dead_node(uint idx) { if (_dead_node_list.test_set(idx)) return; 776 _dead_node_count++; 777 } 778 bool is_dead_node(uint idx) { return _dead_node_list.test(idx) != 0; } 779 uint dead_node_count() { return _dead_node_count; } 780 void reset_dead_node_list() { _dead_node_list.Reset(); 781 _dead_node_count = 0; 782 } 783 uint live_nodes() const { 784 int val = _unique - _dead_node_count; 785 assert (val >= 0, err_msg_res("number of tracked dead nodes %d more than created nodes %d", _unique, _dead_node_count)); 786 return (uint) val; 787 } 788 #ifdef ASSERT 789 uint count_live_nodes_by_graph_walk(); 790 void print_missing_nodes(); 791 #endif 792 793 // Constant table 794 ConstantTable& constant_table() { return _constant_table; } 795 796 MachConstantBaseNode* mach_constant_base_node(); 797 bool has_mach_constant_base_node() const { return _mach_constant_base_node != NULL; } 798 // Generated by adlc, true if CallNode requires MachConstantBase. 799 bool needs_clone_jvms(); 800 801 // Handy undefined Node 802 Node* top() const { return _top; } 803 804 // these are used by guys who need to know about creation and transformation of top: 805 Node* cached_top_node() { return _top; } 806 void set_cached_top_node(Node* tn); 807 808 GrowableArray<Node_Notes*>* node_note_array() const { return _node_note_array; } 809 void set_node_note_array(GrowableArray<Node_Notes*>* arr) { _node_note_array = arr; } 810 Node_Notes* default_node_notes() const { return _default_node_notes; } 811 void set_default_node_notes(Node_Notes* n) { _default_node_notes = n; } 812 813 Node_Notes* node_notes_at(int idx) { 814 return locate_node_notes(_node_note_array, idx, false); 815 } 816 inline bool set_node_notes_at(int idx, Node_Notes* value); 817 818 // Copy notes from source to dest, if they exist. 819 // Overwrite dest only if source provides something. 820 // Return true if information was moved. 821 bool copy_node_notes_to(Node* dest, Node* source); 822 823 // Workhorse function to sort out the blocked Node_Notes array: 824 inline Node_Notes* locate_node_notes(GrowableArray<Node_Notes*>* arr, 825 int idx, bool can_grow = false); 826 827 void grow_node_notes(GrowableArray<Node_Notes*>* arr, int grow_by); 828 829 // Type management 830 Arena* type_arena() { return _type_arena; } 831 Dict* type_dict() { return _type_dict; } 832 void* type_hwm() { return _type_hwm; } 833 size_t type_last_size() { return _type_last_size; } 834 int num_alias_types() { return _num_alias_types; } 835 836 void init_type_arena() { _type_arena = &_Compile_types; } 837 void set_type_arena(Arena* a) { _type_arena = a; } 838 void set_type_dict(Dict* d) { _type_dict = d; } 839 void set_type_hwm(void* p) { _type_hwm = p; } 840 void set_type_last_size(size_t sz) { _type_last_size = sz; } 841 842 const TypeFunc* last_tf(ciMethod* m) { 843 return (m == _last_tf_m) ? _last_tf : NULL; 844 } 845 void set_last_tf(ciMethod* m, const TypeFunc* tf) { 846 assert(m != NULL || tf == NULL, ""); 847 _last_tf_m = m; 848 _last_tf = tf; 849 } 850 851 AliasType* alias_type(int idx) { assert(idx < num_alias_types(), "oob"); return _alias_types[idx]; } 852 AliasType* alias_type(const TypePtr* adr_type, ciField* field = NULL) { return find_alias_type(adr_type, false, field); } 853 bool have_alias_type(const TypePtr* adr_type); 854 AliasType* alias_type(ciField* field); 855 856 int get_alias_index(const TypePtr* at) { return alias_type(at)->index(); } 857 const TypePtr* get_adr_type(uint aidx) { return alias_type(aidx)->adr_type(); } 858 int get_general_index(uint aidx) { return alias_type(aidx)->general_index(); } 859 860 // Building nodes 861 void rethrow_exceptions(JVMState* jvms); 862 void return_values(JVMState* jvms); 863 JVMState* build_start_state(StartNode* start, const TypeFunc* tf); 864 865 // Decide how to build a call. 866 // The profile factor is a discount to apply to this site's interp. profile. 867 CallGenerator* call_generator(ciMethod* call_method, int vtable_index, bool call_does_dispatch, 868 JVMState* jvms, bool allow_inline, float profile_factor, ciKlass* speculative_receiver_type = NULL, 869 bool allow_intrinsics = true, bool delayed_forbidden = false); 870 bool should_delay_inlining(ciMethod* call_method, JVMState* jvms) { 871 return should_delay_string_inlining(call_method, jvms) || 872 should_delay_boxing_inlining(call_method, jvms); 873 } 874 bool should_delay_string_inlining(ciMethod* call_method, JVMState* jvms); 875 bool should_delay_boxing_inlining(ciMethod* call_method, JVMState* jvms); 876 877 // Helper functions to identify inlining potential at call-site 878 ciMethod* optimize_virtual_call(ciMethod* caller, int bci, ciInstanceKlass* klass, 879 ciKlass* holder, ciMethod* callee, 880 const TypeOopPtr* receiver_type, bool is_virtual, 881 bool &call_does_dispatch, int &vtable_index, 882 bool check_access = true); 883 ciMethod* optimize_inlining(ciMethod* caller, int bci, ciInstanceKlass* klass, 884 ciMethod* callee, const TypeOopPtr* receiver_type, 885 bool check_access = true); 886 887 // Report if there were too many traps at a current method and bci. 888 // Report if a trap was recorded, and/or PerMethodTrapLimit was exceeded. 889 // If there is no MDO at all, report no trap unless told to assume it. 890 bool too_many_traps(ciMethod* method, int bci, Deoptimization::DeoptReason reason); 891 // This version, unspecific to a particular bci, asks if 892 // PerMethodTrapLimit was exceeded for all inlined methods seen so far. 893 bool too_many_traps(Deoptimization::DeoptReason reason, 894 // Privately used parameter for logging: 895 ciMethodData* logmd = NULL); 896 // Report if there were too many recompiles at a method and bci. 897 bool too_many_recompiles(ciMethod* method, int bci, Deoptimization::DeoptReason reason); 898 // Return a bitset with the reasons where deoptimization is allowed, 899 // i.e., where there were not too many uncommon traps. 900 int _allowed_reasons; 901 int allowed_deopt_reasons() { return _allowed_reasons; } 902 void set_allowed_deopt_reasons(); 903 904 // Parsing, optimization 905 PhaseGVN* initial_gvn() { return _initial_gvn; } 906 Unique_Node_List* for_igvn() { return _for_igvn; } 907 inline void record_for_igvn(Node* n); // Body is after class Unique_Node_List. 908 void set_initial_gvn(PhaseGVN *gvn) { _initial_gvn = gvn; } 909 void set_for_igvn(Unique_Node_List *for_igvn) { _for_igvn = for_igvn; } 910 911 // Replace n by nn using initial_gvn, calling hash_delete and 912 // record_for_igvn as needed. 913 void gvn_replace_by(Node* n, Node* nn); 914 915 916 void identify_useful_nodes(Unique_Node_List &useful); 917 void update_dead_node_list(Unique_Node_List &useful); 918 void remove_useless_nodes (Unique_Node_List &useful); 919 920 WarmCallInfo* warm_calls() const { return _warm_calls; } 921 void set_warm_calls(WarmCallInfo* l) { _warm_calls = l; } 922 WarmCallInfo* pop_warm_call(); 923 924 // Record this CallGenerator for inlining at the end of parsing. 925 void add_late_inline(CallGenerator* cg) { 926 _late_inlines.insert_before(_late_inlines_pos, cg); 927 _late_inlines_pos++; 928 } 929 930 void prepend_late_inline(CallGenerator* cg) { 931 _late_inlines.insert_before(0, cg); 932 } 933 934 void add_string_late_inline(CallGenerator* cg) { 935 _string_late_inlines.push(cg); 936 } 937 938 void add_boxing_late_inline(CallGenerator* cg) { 939 _boxing_late_inlines.push(cg); 940 } 941 942 void remove_useless_late_inlines(GrowableArray<CallGenerator*>* inlines, Unique_Node_List &useful); 943 944 void dump_inlining(); 945 946 bool over_inlining_cutoff() const { 947 if (!inlining_incrementally()) { 948 return unique() > (uint)NodeCountInliningCutoff; 949 } else { 950 return live_nodes() > (uint)LiveNodeCountInliningCutoff; 951 } 952 } 953 954 void inc_number_of_mh_late_inlines() { _number_of_mh_late_inlines++; } 955 void dec_number_of_mh_late_inlines() { assert(_number_of_mh_late_inlines > 0, "_number_of_mh_late_inlines < 0 !"); _number_of_mh_late_inlines--; } 956 bool has_mh_late_inlines() const { return _number_of_mh_late_inlines > 0; } 957 958 void inline_incrementally_one(PhaseIterGVN& igvn); 959 void inline_incrementally(PhaseIterGVN& igvn); 960 void inline_string_calls(bool parse_time); 961 void inline_boxing_calls(PhaseIterGVN& igvn); 962 963 // Matching, CFG layout, allocation, code generation 964 PhaseCFG* cfg() { return _cfg; } 965 bool select_24_bit_instr() const { return _select_24_bit_instr; } 966 bool in_24_bit_fp_mode() const { return _in_24_bit_fp_mode; } 967 bool has_java_calls() const { return _java_calls > 0; } 968 int java_calls() const { return _java_calls; } 969 int inner_loops() const { return _inner_loops; } 970 Matcher* matcher() { return _matcher; } 971 PhaseRegAlloc* regalloc() { return _regalloc; } 972 int frame_slots() const { return _frame_slots; } 973 int frame_size_in_words() const; // frame_slots in units of the polymorphic 'words' 974 int frame_size_in_bytes() const { return _frame_slots << LogBytesPerInt; } 975 RegMask& FIRST_STACK_mask() { return _FIRST_STACK_mask; } 976 Arena* indexSet_arena() { return _indexSet_arena; } 977 void* indexSet_free_block_list() { return _indexSet_free_block_list; } 978 uint node_bundling_limit() { return _node_bundling_limit; } 979 Bundle* node_bundling_base() { return _node_bundling_base; } 980 void set_node_bundling_limit(uint n) { _node_bundling_limit = n; } 981 void set_node_bundling_base(Bundle* b) { _node_bundling_base = b; } 982 bool starts_bundle(const Node *n) const; 983 bool need_stack_bang(int frame_size_in_bytes) const; 984 bool need_register_stack_bang() const; 985 986 void update_interpreter_frame_size(int size) { 987 if (_interpreter_frame_size < size) { 988 _interpreter_frame_size = size; 989 } 990 } 991 int bang_size_in_bytes() const; 992 993 void set_matcher(Matcher* m) { _matcher = m; } 994 //void set_regalloc(PhaseRegAlloc* ra) { _regalloc = ra; } 995 void set_indexSet_arena(Arena* a) { _indexSet_arena = a; } 996 void set_indexSet_free_block_list(void* p) { _indexSet_free_block_list = p; } 997 998 // Remember if this compilation changes hardware mode to 24-bit precision 999 void set_24_bit_selection_and_mode(bool selection, bool mode) { 1000 _select_24_bit_instr = selection; 1001 _in_24_bit_fp_mode = mode; 1002 } 1003 1004 void set_java_calls(int z) { _java_calls = z; } 1005 void set_inner_loops(int z) { _inner_loops = z; } 1006 1007 // Instruction bits passed off to the VM 1008 int code_size() { return _method_size; } 1009 CodeBuffer* code_buffer() { return &_code_buffer; } 1010 int first_block_size() { return _first_block_size; } 1011 void set_frame_complete(int off) { _code_offsets.set_value(CodeOffsets::Frame_Complete, off); } 1012 ExceptionHandlerTable* handler_table() { return &_handler_table; } 1013 ImplicitExceptionTable* inc_table() { return &_inc_table; } 1014 OopMapSet* oop_map_set() { return _oop_map_set; } 1015 DebugInformationRecorder* debug_info() { return env()->debug_info(); } 1016 Dependencies* dependencies() { return env()->dependencies(); } 1017 static int CompiledZap_count() { return _CompiledZap_count; } 1018 BufferBlob* scratch_buffer_blob() { return _scratch_buffer_blob; } 1019 void init_scratch_buffer_blob(int const_size); 1020 void clear_scratch_buffer_blob(); 1021 void set_scratch_buffer_blob(BufferBlob* b) { _scratch_buffer_blob = b; } 1022 relocInfo* scratch_locs_memory() { return _scratch_locs_memory; } 1023 void set_scratch_locs_memory(relocInfo* b) { _scratch_locs_memory = b; } 1024 1025 // emit to scratch blob, report resulting size 1026 uint scratch_emit_size(const Node* n); 1027 void set_in_scratch_emit_size(bool x) { _in_scratch_emit_size = x; } 1028 bool in_scratch_emit_size() const { return _in_scratch_emit_size; } 1029 1030 enum ScratchBufferBlob { 1031 MAX_inst_size = 1024, 1032 MAX_locs_size = 128, // number of relocInfo elements 1033 MAX_const_size = 128, 1034 MAX_stubs_size = 128 1035 }; 1036 1037 // Major entry point. Given a Scope, compile the associated method. 1038 // For normal compilations, entry_bci is InvocationEntryBci. For on stack 1039 // replacement, entry_bci indicates the bytecode for which to compile a 1040 // continuation. 1041 Compile(ciEnv* ci_env, C2Compiler* compiler, ciMethod* target, 1042 int entry_bci, bool subsume_loads, bool do_escape_analysis, 1043 bool eliminate_boxing); 1044 1045 // Second major entry point. From the TypeFunc signature, generate code 1046 // to pass arguments from the Java calling convention to the C calling 1047 // convention. 1048 Compile(ciEnv* ci_env, const TypeFunc *(*gen)(), 1049 address stub_function, const char *stub_name, 1050 int is_fancy_jump, bool pass_tls, 1051 bool save_arg_registers, bool return_pc); 1052 1053 // From the TypeFunc signature, generate code to pass arguments 1054 // from Compiled calling convention to Interpreter's calling convention 1055 void Generate_Compiled_To_Interpreter_Graph(const TypeFunc *tf, address interpreter_entry); 1056 1057 // From the TypeFunc signature, generate code to pass arguments 1058 // from Interpreter's calling convention to Compiler's calling convention 1059 void Generate_Interpreter_To_Compiled_Graph(const TypeFunc *tf); 1060 1061 // Are we compiling a method? 1062 bool has_method() { return method() != NULL; } 1063 1064 // Maybe print some information about this compile. 1065 void print_compile_messages(); 1066 1067 // Final graph reshaping, a post-pass after the regular optimizer is done. 1068 bool final_graph_reshaping(); 1069 1070 // returns true if adr is completely contained in the given alias category 1071 bool must_alias(const TypePtr* adr, int alias_idx); 1072 1073 // returns true if adr overlaps with the given alias category 1074 bool can_alias(const TypePtr* adr, int alias_idx); 1075 1076 // Driver for converting compiler's IR into machine code bits 1077 void Output(); 1078 1079 // Accessors for node bundling info. 1080 Bundle* node_bundling(const Node *n); 1081 bool valid_bundle_info(const Node *n); 1082 1083 // Schedule and Bundle the instructions 1084 void ScheduleAndBundle(); 1085 1086 // Build OopMaps for each GC point 1087 void BuildOopMaps(); 1088 1089 // Append debug info for the node "local" at safepoint node "sfpt" to the 1090 // "array", May also consult and add to "objs", which describes the 1091 // scalar-replaced objects. 1092 void FillLocArray( int idx, MachSafePointNode* sfpt, 1093 Node *local, GrowableArray<ScopeValue*> *array, 1094 GrowableArray<ScopeValue*> *objs ); 1095 1096 // If "objs" contains an ObjectValue whose id is "id", returns it, else NULL. 1097 static ObjectValue* sv_for_node_id(GrowableArray<ScopeValue*> *objs, int id); 1098 // Requres that "objs" does not contains an ObjectValue whose id matches 1099 // that of "sv. Appends "sv". 1100 static void set_sv_for_object_node(GrowableArray<ScopeValue*> *objs, 1101 ObjectValue* sv ); 1102 1103 // Process an OopMap Element while emitting nodes 1104 void Process_OopMap_Node(MachNode *mach, int code_offset); 1105 1106 // Initialize code buffer 1107 CodeBuffer* init_buffer(uint* blk_starts); 1108 1109 // Write out basic block data to code buffer 1110 void fill_buffer(CodeBuffer* cb, uint* blk_starts); 1111 1112 // Determine which variable sized branches can be shortened 1113 void shorten_branches(uint* blk_starts, int& code_size, int& reloc_size, int& stub_size); 1114 1115 // Compute the size of first NumberOfLoopInstrToAlign instructions 1116 // at the head of a loop. 1117 void compute_loop_first_inst_sizes(); 1118 1119 // Compute the information for the exception tables 1120 void FillExceptionTables(uint cnt, uint *call_returns, uint *inct_starts, Label *blk_labels); 1121 1122 // Stack slots that may be unused by the calling convention but must 1123 // otherwise be preserved. On Intel this includes the return address. 1124 // On PowerPC it includes the 4 words holding the old TOC & LR glue. 1125 uint in_preserve_stack_slots(); 1126 1127 // "Top of Stack" slots that may be unused by the calling convention but must 1128 // otherwise be preserved. 1129 // On Intel these are not necessary and the value can be zero. 1130 // On Sparc this describes the words reserved for storing a register window 1131 // when an interrupt occurs. 1132 static uint out_preserve_stack_slots(); 1133 1134 // Number of outgoing stack slots killed above the out_preserve_stack_slots 1135 // for calls to C. Supports the var-args backing area for register parms. 1136 uint varargs_C_out_slots_killed() const; 1137 1138 // Number of Stack Slots consumed by a synchronization entry 1139 int sync_stack_slots() const; 1140 1141 // Compute the name of old_SP. See <arch>.ad for frame layout. 1142 OptoReg::Name compute_old_SP(); 1143 1144 #ifdef ENABLE_ZAP_DEAD_LOCALS 1145 static bool is_node_getting_a_safepoint(Node*); 1146 void Insert_zap_nodes(); 1147 Node* call_zap_node(MachSafePointNode* n, int block_no); 1148 #endif 1149 1150 private: 1151 // Phase control: 1152 void Init(int aliaslevel); // Prepare for a single compilation 1153 int Inline_Warm(); // Find more inlining work. 1154 void Finish_Warm(); // Give up on further inlines. 1155 void Optimize(); // Given a graph, optimize it 1156 void Code_Gen(); // Generate code from a graph 1157 1158 // Management of the AliasType table. 1159 void grow_alias_types(); 1160 AliasCacheEntry* probe_alias_cache(const TypePtr* adr_type); 1161 const TypePtr *flatten_alias_type(const TypePtr* adr_type) const; 1162 AliasType* find_alias_type(const TypePtr* adr_type, bool no_create, ciField* field); 1163 1164 void verify_top(Node*) const PRODUCT_RETURN; 1165 1166 // Intrinsic setup. 1167 void register_library_intrinsics(); // initializer 1168 CallGenerator* make_vm_intrinsic(ciMethod* m, bool is_virtual); // constructor 1169 int intrinsic_insertion_index(ciMethod* m, bool is_virtual); // helper 1170 CallGenerator* find_intrinsic(ciMethod* m, bool is_virtual); // query fn 1171 void register_intrinsic(CallGenerator* cg); // update fn 1172 1173 #ifndef PRODUCT 1174 static juint _intrinsic_hist_count[vmIntrinsics::ID_LIMIT]; 1175 static jubyte _intrinsic_hist_flags[vmIntrinsics::ID_LIMIT]; 1176 #endif 1177 // Function calls made by the public function final_graph_reshaping. 1178 // No need to be made public as they are not called elsewhere. 1179 void final_graph_reshaping_impl( Node *n, Final_Reshape_Counts &frc); 1180 void final_graph_reshaping_walk( Node_Stack &nstack, Node *root, Final_Reshape_Counts &frc ); 1181 void eliminate_redundant_card_marks(Node* n); 1182 1183 public: 1184 1185 // Note: Histogram array size is about 1 Kb. 1186 enum { // flag bits: 1187 _intrinsic_worked = 1, // succeeded at least once 1188 _intrinsic_failed = 2, // tried it but it failed 1189 _intrinsic_disabled = 4, // was requested but disabled (e.g., -XX:-InlineUnsafeOps) 1190 _intrinsic_virtual = 8, // was seen in the virtual form (rare) 1191 _intrinsic_both = 16 // was seen in the non-virtual form (usual) 1192 }; 1193 // Update histogram. Return boolean if this is a first-time occurrence. 1194 static bool gather_intrinsic_statistics(vmIntrinsics::ID id, 1195 bool is_virtual, int flags) PRODUCT_RETURN0; 1196 static void print_intrinsic_statistics() PRODUCT_RETURN; 1197 1198 // Graph verification code 1199 // Walk the node list, verifying that there is a one-to-one 1200 // correspondence between Use-Def edges and Def-Use edges 1201 // The option no_dead_code enables stronger checks that the 1202 // graph is strongly connected from root in both directions. 1203 void verify_graph_edges(bool no_dead_code = false) PRODUCT_RETURN; 1204 1205 // Verify GC barrier patterns 1206 void verify_barriers() PRODUCT_RETURN; 1207 1208 // End-of-run dumps. 1209 static void print_statistics() PRODUCT_RETURN; 1210 1211 // Dump formatted assembly 1212 void dump_asm(int *pcs = NULL, uint pc_limit = 0) PRODUCT_RETURN; 1213 void dump_pc(int *pcs, int pc_limit, Node *n); 1214 1215 // Verify ADLC assumptions during startup 1216 static void adlc_verification() PRODUCT_RETURN; 1217 1218 // Definitions of pd methods 1219 static void pd_compiler2_init(); 1220 1221 // Convert integer value to a narrowed long type dependent on ctrl (for example, a range check) 1222 static Node* constrained_convI2L(PhaseGVN* phase, Node* value, const TypeInt* itype, Node* ctrl); 1223 1224 // Auxiliary method for randomized fuzzing/stressing 1225 static bool randomized_select(int count); 1226 }; 1227 1228 #endif // SHARE_VM_OPTO_COMPILE_HPP