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