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| 1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
| 2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
| 3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
| 4 // met: | 4 // met: |
| 5 // | 5 // |
| 6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
| 7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
| 8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
| 9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
| 10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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| 79 Scope* global_scope() const { return global_scope_; } | 79 Scope* global_scope() const { return global_scope_; } |
| 80 Handle<Code> code() const { return code_; } | 80 Handle<Code> code() const { return code_; } |
| 81 Handle<JSFunction> closure() const { return closure_; } | 81 Handle<JSFunction> closure() const { return closure_; } |
| 82 Handle<SharedFunctionInfo> shared_info() const { return shared_info_; } | 82 Handle<SharedFunctionInfo> shared_info() const { return shared_info_; } |
| 83 Handle<Script> script() const { return script_; } | 83 Handle<Script> script() const { return script_; } |
| 84 HydrogenCodeStub* code_stub() const {return code_stub_; } | 84 HydrogenCodeStub* code_stub() const {return code_stub_; } |
| 85 v8::Extension* extension() const { return extension_; } | 85 v8::Extension* extension() const { return extension_; } |
| 86 ScriptDataImpl* pre_parse_data() const { return pre_parse_data_; } | 86 ScriptDataImpl* pre_parse_data() const { return pre_parse_data_; } |
| 87 Handle<Context> context() const { return context_; } | 87 Handle<Context> context() const { return context_; } |
| 88 BailoutId osr_ast_id() const { return osr_ast_id_; } | 88 BailoutId osr_ast_id() const { return osr_ast_id_; } |
| 89 uint32_t osr_pc_offset() const { return osr_pc_offset_; } |
| 89 int opt_count() const { return opt_count_; } | 90 int opt_count() const { return opt_count_; } |
| 90 int num_parameters() const; | 91 int num_parameters() const; |
| 91 int num_heap_slots() const; | 92 int num_heap_slots() const; |
| 92 Code::Flags flags() const; | 93 Code::Flags flags() const; |
| 93 | 94 |
| 94 void MarkAsEval() { | 95 void MarkAsEval() { |
| 95 ASSERT(!is_lazy()); | 96 ASSERT(!is_lazy()); |
| 96 flags_ |= IsEval::encode(true); | 97 flags_ |= IsEval::encode(true); |
| 97 } | 98 } |
| 98 void MarkAsGlobal() { | 99 void MarkAsGlobal() { |
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| 498 class HGraph; | 499 class HGraph; |
| 499 class HOptimizedGraphBuilder; | 500 class HOptimizedGraphBuilder; |
| 500 class LChunk; | 501 class LChunk; |
| 501 | 502 |
| 502 // A helper class that calls the three compilation phases in | 503 // A helper class that calls the three compilation phases in |
| 503 // Crankshaft and keeps track of its state. The three phases | 504 // Crankshaft and keeps track of its state. The three phases |
| 504 // CreateGraph, OptimizeGraph and GenerateAndInstallCode can either | 505 // CreateGraph, OptimizeGraph and GenerateAndInstallCode can either |
| 505 // fail, bail-out to the full code generator or succeed. Apart from | 506 // fail, bail-out to the full code generator or succeed. Apart from |
| 506 // their return value, the status of the phase last run can be checked | 507 // their return value, the status of the phase last run can be checked |
| 507 // using last_status(). | 508 // using last_status(). |
| 508 class OptimizingCompiler: public ZoneObject { | 509 class RecompileJob: public ZoneObject { |
| 509 public: | 510 public: |
| 510 explicit OptimizingCompiler(CompilationInfo* info) | 511 explicit RecompileJob(CompilationInfo* info) |
| 511 : info_(info), | 512 : info_(info), |
| 512 graph_builder_(NULL), | 513 graph_builder_(NULL), |
| 513 graph_(NULL), | 514 graph_(NULL), |
| 514 chunk_(NULL), | 515 chunk_(NULL), |
| 515 last_status_(FAILED) { } | 516 last_status_(FAILED) { } |
| 516 | 517 |
| 517 enum Status { | 518 enum Status { |
| 518 FAILED, BAILED_OUT, SUCCEEDED | 519 FAILED, BAILED_OUT, SUCCEEDED |
| 519 }; | 520 }; |
| 520 | 521 |
| 521 MUST_USE_RESULT Status CreateGraph(); | 522 MUST_USE_RESULT Status CreateGraph(); |
| 522 MUST_USE_RESULT Status OptimizeGraph(); | 523 MUST_USE_RESULT Status OptimizeGraph(); |
| 523 MUST_USE_RESULT Status GenerateAndInstallCode(); | 524 MUST_USE_RESULT Status GenerateAndInstallCode(); |
| 524 | 525 |
| 525 Status last_status() const { return last_status_; } | 526 Status last_status() const { return last_status_; } |
| 526 CompilationInfo* info() const { return info_; } | 527 CompilationInfo* info() const { return info_; } |
| 527 Isolate* isolate() const { return info()->isolate(); } | 528 Isolate* isolate() const { return info()->isolate(); } |
| 528 | 529 |
| 529 MUST_USE_RESULT Status AbortOptimization() { | 530 MUST_USE_RESULT Status AbortOptimization() { |
| 530 info_->AbortOptimization(); | 531 info_->AbortOptimization(); |
| 531 info_->shared_info()->DisableOptimization(info_->bailout_reason()); | 532 info_->shared_info()->DisableOptimization(info_->bailout_reason()); |
| 532 return SetLastStatus(BAILED_OUT); | 533 return SetLastStatus(BAILED_OUT); |
| 533 } | 534 } |
| 534 | 535 |
| 536 void WaitForInstall() { |
| 537 ASSERT(info_->is_osr()); |
| 538 awaiting_install_ = true; |
| 539 } |
| 540 |
| 541 bool IsWaitingForInstall() { return awaiting_install_; } |
| 542 |
| 535 private: | 543 private: |
| 536 CompilationInfo* info_; | 544 CompilationInfo* info_; |
| 537 HOptimizedGraphBuilder* graph_builder_; | 545 HOptimizedGraphBuilder* graph_builder_; |
| 538 HGraph* graph_; | 546 HGraph* graph_; |
| 539 LChunk* chunk_; | 547 LChunk* chunk_; |
| 540 TimeDelta time_taken_to_create_graph_; | 548 TimeDelta time_taken_to_create_graph_; |
| 541 TimeDelta time_taken_to_optimize_; | 549 TimeDelta time_taken_to_optimize_; |
| 542 TimeDelta time_taken_to_codegen_; | 550 TimeDelta time_taken_to_codegen_; |
| 543 Status last_status_; | 551 Status last_status_; |
| 552 bool awaiting_install_; |
| 544 | 553 |
| 545 MUST_USE_RESULT Status SetLastStatus(Status status) { | 554 MUST_USE_RESULT Status SetLastStatus(Status status) { |
| 546 last_status_ = status; | 555 last_status_ = status; |
| 547 return last_status_; | 556 return last_status_; |
| 548 } | 557 } |
| 549 void RecordOptimizationStats(); | 558 void RecordOptimizationStats(); |
| 550 | 559 |
| 551 struct Timer { | 560 struct Timer { |
| 552 Timer(OptimizingCompiler* compiler, TimeDelta* location) | 561 Timer(RecompileJob* job, TimeDelta* location) |
| 553 : compiler_(compiler), | 562 : job_(job), location_(location) { |
| 554 location_(location) { | |
| 555 ASSERT(location_ != NULL); | 563 ASSERT(location_ != NULL); |
| 556 timer_.Start(); | 564 timer_.Start(); |
| 557 } | 565 } |
| 558 | 566 |
| 559 ~Timer() { | 567 ~Timer() { |
| 560 *location_ += timer_.Elapsed(); | 568 *location_ += timer_.Elapsed(); |
| 561 } | 569 } |
| 562 | 570 |
| 563 OptimizingCompiler* compiler_; | 571 RecompileJob* job_; |
| 564 ElapsedTimer timer_; | 572 ElapsedTimer timer_; |
| 565 TimeDelta* location_; | 573 TimeDelta* location_; |
| 566 }; | 574 }; |
| 567 }; | 575 }; |
| 568 | 576 |
| 569 | 577 |
| 570 // The V8 compiler | 578 // The V8 compiler |
| 571 // | 579 // |
| 572 // General strategy: Source code is translated into an anonymous function w/o | 580 // General strategy: Source code is translated into an anonymous function w/o |
| 573 // parameters which then can be executed. If the source code contains other | 581 // parameters which then can be executed. If the source code contains other |
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| 618 // compiled). | 626 // compiled). |
| 619 static Handle<SharedFunctionInfo> BuildFunctionInfo(FunctionLiteral* node, | 627 static Handle<SharedFunctionInfo> BuildFunctionInfo(FunctionLiteral* node, |
| 620 Handle<Script> script); | 628 Handle<Script> script); |
| 621 | 629 |
| 622 // Set the function info for a newly compiled function. | 630 // Set the function info for a newly compiled function. |
| 623 static void SetFunctionInfo(Handle<SharedFunctionInfo> function_info, | 631 static void SetFunctionInfo(Handle<SharedFunctionInfo> function_info, |
| 624 FunctionLiteral* lit, | 632 FunctionLiteral* lit, |
| 625 bool is_toplevel, | 633 bool is_toplevel, |
| 626 Handle<Script> script); | 634 Handle<Script> script); |
| 627 | 635 |
| 628 static Handle<Code> InstallOptimizedCode(OptimizingCompiler* info); | 636 static Handle<Code> InstallOptimizedCode(RecompileJob* job); |
| 629 | 637 |
| 630 #ifdef ENABLE_DEBUGGER_SUPPORT | 638 #ifdef ENABLE_DEBUGGER_SUPPORT |
| 631 static bool MakeCodeForLiveEdit(CompilationInfo* info); | 639 static bool MakeCodeForLiveEdit(CompilationInfo* info); |
| 632 #endif | 640 #endif |
| 633 | 641 |
| 634 static void RecordFunctionCompilation(Logger::LogEventsAndTags tag, | 642 static void RecordFunctionCompilation(Logger::LogEventsAndTags tag, |
| 635 CompilationInfo* info, | 643 CompilationInfo* info, |
| 636 Handle<SharedFunctionInfo> shared); | 644 Handle<SharedFunctionInfo> shared); |
| 637 }; | 645 }; |
| 638 | 646 |
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| 657 unsigned info_zone_start_allocation_size_; | 665 unsigned info_zone_start_allocation_size_; |
| 658 ElapsedTimer timer_; | 666 ElapsedTimer timer_; |
| 659 | 667 |
| 660 DISALLOW_COPY_AND_ASSIGN(CompilationPhase); | 668 DISALLOW_COPY_AND_ASSIGN(CompilationPhase); |
| 661 }; | 669 }; |
| 662 | 670 |
| 663 | 671 |
| 664 } } // namespace v8::internal | 672 } } // namespace v8::internal |
| 665 | 673 |
| 666 #endif // V8_COMPILER_H_ | 674 #endif // V8_COMPILER_H_ |
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