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| 1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 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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| 498 case OSR: | 498 case OSR: |
| 499 return FLAG_trace_osr; | 499 return FLAG_trace_osr; |
| 500 } | 500 } |
| 501 UNREACHABLE(); | 501 UNREACHABLE(); |
| 502 return false; | 502 return false; |
| 503 } | 503 } |
| 504 | 504 |
| 505 | 505 |
| 506 const char* Deoptimizer::MessageFor(BailoutType type) { | 506 const char* Deoptimizer::MessageFor(BailoutType type) { |
| 507 switch (type) { | 507 switch (type) { |
| 508 case EAGER: | 508 case EAGER: return "eager"; |
| 509 case SOFT: | 509 case SOFT: return "soft"; |
| 510 case LAZY: | 510 case LAZY: return "lazy"; |
| 511 return "DEOPT"; | 511 case DEBUGGER: return "debugger"; |
| 512 case DEBUGGER: | 512 case OSR: return "OSR"; |
| 513 return "DEOPT FOR DEBUGGER"; | |
| 514 case OSR: | |
| 515 return "OSR"; | |
| 516 } | 513 } |
| 517 UNREACHABLE(); | 514 UNREACHABLE(); |
| 518 return NULL; | 515 return NULL; |
| 519 } | 516 } |
| 520 | 517 |
| 521 | 518 |
| 522 Deoptimizer::Deoptimizer(Isolate* isolate, | 519 Deoptimizer::Deoptimizer(Isolate* isolate, |
| 523 JSFunction* function, | 520 JSFunction* function, |
| 524 BailoutType type, | 521 BailoutType type, |
| 525 unsigned bailout_id, | 522 unsigned bailout_id, |
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| 554 int opt_count = function->shared()->opt_count(); | 551 int opt_count = function->shared()->opt_count(); |
| 555 if (opt_count > 0) opt_count--; | 552 if (opt_count > 0) opt_count--; |
| 556 function->shared()->set_opt_count(opt_count); | 553 function->shared()->set_opt_count(opt_count); |
| 557 } | 554 } |
| 558 } | 555 } |
| 559 compiled_code_ = FindOptimizedCode(function, optimized_code); | 556 compiled_code_ = FindOptimizedCode(function, optimized_code); |
| 560 StackFrame::Type frame_type = function == NULL | 557 StackFrame::Type frame_type = function == NULL |
| 561 ? StackFrame::STUB | 558 ? StackFrame::STUB |
| 562 : StackFrame::JAVA_SCRIPT; | 559 : StackFrame::JAVA_SCRIPT; |
| 563 trace_ = TraceEnabledFor(type, frame_type); | 560 trace_ = TraceEnabledFor(type, frame_type); |
| 564 if (trace_) Trace(); | |
| 565 ASSERT(HEAP->allow_allocation(false)); | 561 ASSERT(HEAP->allow_allocation(false)); |
| 566 unsigned size = ComputeInputFrameSize(); | 562 unsigned size = ComputeInputFrameSize(); |
| 567 input_ = new(size) FrameDescription(size, function); | 563 input_ = new(size) FrameDescription(size, function); |
| 568 input_->SetFrameType(frame_type); | 564 input_->SetFrameType(frame_type); |
| 569 } | 565 } |
| 570 | 566 |
| 571 | 567 |
| 572 Code* Deoptimizer::FindOptimizedCode(JSFunction* function, | 568 Code* Deoptimizer::FindOptimizedCode(JSFunction* function, |
| 573 Code* optimized_code) { | 569 Code* optimized_code) { |
| 574 switch (bailout_type_) { | 570 switch (bailout_type_) { |
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| 594 } | 590 } |
| 595 case Deoptimizer::DEBUGGER: | 591 case Deoptimizer::DEBUGGER: |
| 596 ASSERT(optimized_code->contains(from_)); | 592 ASSERT(optimized_code->contains(from_)); |
| 597 return optimized_code; | 593 return optimized_code; |
| 598 } | 594 } |
| 599 UNREACHABLE(); | 595 UNREACHABLE(); |
| 600 return NULL; | 596 return NULL; |
| 601 } | 597 } |
| 602 | 598 |
| 603 | 599 |
| 604 void Deoptimizer::Trace() { | |
| 605 PrintF("**** %s: ", Deoptimizer::MessageFor(bailout_type_)); | |
| 606 PrintFunctionName(); | |
| 607 PrintF(" at id #%u, address 0x%" V8PRIxPTR ", frame size %d\n", | |
| 608 bailout_id_, | |
| 609 reinterpret_cast<intptr_t>(from_), | |
| 610 fp_to_sp_delta_ - (2 * kPointerSize)); | |
| 611 if (bailout_type_ == EAGER || bailout_type_ == SOFT) { | |
| 612 compiled_code_->PrintDeoptLocation(bailout_id_); | |
| 613 } | |
| 614 } | |
| 615 | |
| 616 | |
| 617 void Deoptimizer::PrintFunctionName() { | 600 void Deoptimizer::PrintFunctionName() { |
| 618 if (function_->IsJSFunction()) { | 601 if (function_->IsJSFunction()) { |
| 619 function_->PrintName(); | 602 function_->PrintName(); |
| 620 } else { | 603 } else { |
| 621 PrintF("%s", Code::Kind2String(compiled_code_->kind())); | 604 PrintF("%s", Code::Kind2String(compiled_code_->kind())); |
| 622 } | 605 } |
| 623 } | 606 } |
| 624 | 607 |
| 625 | 608 |
| 626 Deoptimizer::~Deoptimizer() { | 609 Deoptimizer::~Deoptimizer() { |
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| 716 // without having a real stack frame in place. | 699 // without having a real stack frame in place. |
| 717 void Deoptimizer::DoComputeOutputFrames() { | 700 void Deoptimizer::DoComputeOutputFrames() { |
| 718 if (bailout_type_ == OSR) { | 701 if (bailout_type_ == OSR) { |
| 719 DoComputeOsrOutputFrame(); | 702 DoComputeOsrOutputFrame(); |
| 720 return; | 703 return; |
| 721 } | 704 } |
| 722 | 705 |
| 723 // Print some helpful diagnostic information. | 706 // Print some helpful diagnostic information. |
| 724 int64_t start = OS::Ticks(); | 707 int64_t start = OS::Ticks(); |
| 725 if (trace_) { | 708 if (trace_) { |
| 726 PrintF("[deoptimizing%s: begin 0x%08" V8PRIxPTR " ", | 709 PrintF("[deoptimizing (DEOPT %s): begin 0x%08" V8PRIxPTR " ", |
| 727 (bailout_type_ == LAZY ? " (lazy)" : ""), | 710 MessageFor(bailout_type_), |
| 728 reinterpret_cast<intptr_t>(function_)); | 711 reinterpret_cast<intptr_t>(function_)); |
| 729 PrintFunctionName(); | 712 PrintFunctionName(); |
| 730 PrintF(" @%d]\n", bailout_id_); | 713 PrintF(" @%d, FP to SP delta: %d]\n", bailout_id_, fp_to_sp_delta_); |
| 714 if (bailout_type_ == EAGER || bailout_type_ == SOFT) { |
| 715 compiled_code_->PrintDeoptLocation(bailout_id_); |
| 716 } |
| 731 } | 717 } |
| 732 | 718 |
| 733 // Determine basic deoptimization information. The optimized frame is | 719 // Determine basic deoptimization information. The optimized frame is |
| 734 // described by the input data. | 720 // described by the input data. |
| 735 DeoptimizationInputData* input_data = | 721 DeoptimizationInputData* input_data = |
| 736 DeoptimizationInputData::cast(compiled_code_->deoptimization_data()); | 722 DeoptimizationInputData::cast(compiled_code_->deoptimization_data()); |
| 737 BailoutId node_id = input_data->AstId(bailout_id_); | 723 BailoutId node_id = input_data->AstId(bailout_id_); |
| 738 ByteArray* translations = input_data->TranslationByteArray(); | 724 ByteArray* translations = input_data->TranslationByteArray(); |
| 739 unsigned translation_index = | 725 unsigned translation_index = |
| 740 input_data->TranslationIndex(bailout_id_)->value(); | 726 input_data->TranslationIndex(bailout_id_)->value(); |
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| 797 UNREACHABLE(); | 783 UNREACHABLE(); |
| 798 break; | 784 break; |
| 799 } | 785 } |
| 800 } | 786 } |
| 801 | 787 |
| 802 // Print some helpful diagnostic information. | 788 // Print some helpful diagnostic information. |
| 803 if (trace_) { | 789 if (trace_) { |
| 804 double ms = static_cast<double>(OS::Ticks() - start) / 1000; | 790 double ms = static_cast<double>(OS::Ticks() - start) / 1000; |
| 805 int index = output_count_ - 1; // Index of the topmost frame. | 791 int index = output_count_ - 1; // Index of the topmost frame. |
| 806 JSFunction* function = output_[index]->GetFunction(); | 792 JSFunction* function = output_[index]->GetFunction(); |
| 807 PrintF("[deoptimizing: end 0x%08" V8PRIxPTR " ", | 793 PrintF("[deoptimizing (%s): end 0x%08" V8PRIxPTR " ", |
| 794 MessageFor(bailout_type_), |
| 808 reinterpret_cast<intptr_t>(function)); | 795 reinterpret_cast<intptr_t>(function)); |
| 809 if (function != NULL) function->PrintName(); | 796 PrintFunctionName(); |
| 810 PrintF(" => node=%d, pc=0x%08" V8PRIxPTR ", state=%s, alignment=%s," | 797 PrintF(" @%d => node=%d, pc=0x%08" V8PRIxPTR ", state=%s, alignment=%s," |
| 811 " took %0.3f ms]\n", | 798 " took %0.3f ms]\n", |
| 799 bailout_id_, |
| 812 node_id.ToInt(), | 800 node_id.ToInt(), |
| 813 output_[index]->GetPc(), | 801 output_[index]->GetPc(), |
| 814 FullCodeGenerator::State2String( | 802 FullCodeGenerator::State2String( |
| 815 static_cast<FullCodeGenerator::State>( | 803 static_cast<FullCodeGenerator::State>( |
| 816 output_[index]->GetState()->value())), | 804 output_[index]->GetState()->value())), |
| 817 has_alignment_padding_ ? "with padding" : "no padding", | 805 has_alignment_padding_ ? "with padding" : "no padding", |
| 818 ms); | 806 ms); |
| 819 } | 807 } |
| 820 } | 808 } |
| 821 | 809 |
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| 2775 | 2763 |
| 2776 void DeoptimizedFrameInfo::Iterate(ObjectVisitor* v) { | 2764 void DeoptimizedFrameInfo::Iterate(ObjectVisitor* v) { |
| 2777 v->VisitPointer(BitCast<Object**>(&function_)); | 2765 v->VisitPointer(BitCast<Object**>(&function_)); |
| 2778 v->VisitPointers(parameters_, parameters_ + parameters_count_); | 2766 v->VisitPointers(parameters_, parameters_ + parameters_count_); |
| 2779 v->VisitPointers(expression_stack_, expression_stack_ + expression_count_); | 2767 v->VisitPointers(expression_stack_, expression_stack_ + expression_count_); |
| 2780 } | 2768 } |
| 2781 | 2769 |
| 2782 #endif // ENABLE_DEBUGGER_SUPPORT | 2770 #endif // ENABLE_DEBUGGER_SUPPORT |
| 2783 | 2771 |
| 2784 } } // namespace v8::internal | 2772 } } // namespace v8::internal |
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