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Issue 10878047: Revert to code state of 3.13.1 plus r12350 (Closed) Base URL: https://v8.googlecode.com/svn/trunk
Patch Set: Created 8 years, 4 months ago
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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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99 node->set_next(data->deoptimizing_code_list_); 99 node->set_next(data->deoptimizing_code_list_);
100 data->deoptimizing_code_list_ = node; 100 data->deoptimizing_code_list_ = node;
101 101
102 // We might be in the middle of incremental marking with compaction. 102 // We might be in the middle of incremental marking with compaction.
103 // Tell collector to treat this code object in a special way and 103 // Tell collector to treat this code object in a special way and
104 // ignore all slots that might have been recorded on it. 104 // ignore all slots that might have been recorded on it.
105 isolate->heap()->mark_compact_collector()->InvalidateCode(code); 105 isolate->heap()->mark_compact_collector()->InvalidateCode(code);
106 106
107 // Iterate over all the functions which share the same code object 107 // Iterate over all the functions which share the same code object
108 // and make them use unoptimized version. 108 // and make them use unoptimized version.
109 Context* context = function->context()->native_context(); 109 Context* context = function->context()->global_context();
110 Object* element = context->get(Context::OPTIMIZED_FUNCTIONS_LIST); 110 Object* element = context->get(Context::OPTIMIZED_FUNCTIONS_LIST);
111 SharedFunctionInfo* shared = function->shared(); 111 SharedFunctionInfo* shared = function->shared();
112 while (!element->IsUndefined()) { 112 while (!element->IsUndefined()) {
113 JSFunction* func = JSFunction::cast(element); 113 JSFunction* func = JSFunction::cast(element);
114 // Grab element before code replacement as ReplaceCode alters the list. 114 // Grab element before code replacement as ReplaceCode alters the list.
115 element = func->next_function_link(); 115 element = func->next_function_link();
116 if (func->code() == code) { 116 if (func->code() == code) {
117 func->ReplaceCode(shared->code()); 117 func->ReplaceCode(shared->code());
118 } 118 }
119 } 119 }
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588 588
589 ASSERT(0 == output_offset); 589 ASSERT(0 == output_offset);
590 590
591 uint32_t pc = reinterpret_cast<uint32_t>( 591 uint32_t pc = reinterpret_cast<uint32_t>(
592 construct_stub->instruction_start() + 592 construct_stub->instruction_start() +
593 isolate_->heap()->construct_stub_deopt_pc_offset()->value()); 593 isolate_->heap()->construct_stub_deopt_pc_offset()->value());
594 output_frame->SetPc(pc); 594 output_frame->SetPc(pc);
595 } 595 }
596 596
597 597
598 void Deoptimizer::DoComputeSetterStubFrame(TranslationIterator* iterator,
599 int frame_index) {
600 JSFunction* setter = JSFunction::cast(ComputeLiteral(iterator->Next()));
601 // The receiver and the implicit return value are expected in registers by the
602 // StoreIC, so they don't belong to the output stack frame. This means that we
603 // have to use a height of 0.
604 unsigned height = 0;
605 unsigned height_in_bytes = height * kPointerSize;
606 if (FLAG_trace_deopt) {
607 PrintF(" translating setter stub => height=%u\n", height_in_bytes);
608 }
609
610 // We need 5 stack entries from StackFrame::INTERNAL (lr, fp, cp, frame type,
611 // code object, see MacroAssembler::EnterFrame) + 1 stack entry from setter
612 // stub (implicit return value, see StoreStubCompiler::CompileStoreViaSetter).
613 unsigned fixed_frame_size = (5 + 1) * kPointerSize;
614 unsigned output_frame_size = height_in_bytes + fixed_frame_size;
615
616 // Allocate and store the output frame description.
617 FrameDescription* output_frame =
618 new(output_frame_size) FrameDescription(output_frame_size, setter);
619 output_frame->SetFrameType(StackFrame::INTERNAL);
620
621 // A frame for a setter stub can not be the topmost or bottommost one.
622 ASSERT(frame_index > 0 && frame_index < output_count_ - 1);
623 ASSERT(output_[frame_index] == NULL);
624 output_[frame_index] = output_frame;
625
626 // The top address of the frame is computed from the previous frame's top and
627 // this frame's size.
628 uint32_t top_address = output_[frame_index - 1]->GetTop() - output_frame_size;
629 output_frame->SetTop(top_address);
630
631 unsigned output_offset = output_frame_size;
632
633 // Read caller's PC from the previous frame.
634 output_offset -= kPointerSize;
635 intptr_t callers_pc = output_[frame_index - 1]->GetPc();
636 output_frame->SetFrameSlot(output_offset, callers_pc);
637 if (FLAG_trace_deopt) {
638 PrintF(" 0x%08" V8PRIxPTR ": [top + %u] <- 0x%08" V8PRIxPTR
639 " ; caller's pc\n",
640 top_address + output_offset, output_offset, callers_pc);
641 }
642
643 // Read caller's FP from the previous frame, and set this frame's FP.
644 output_offset -= kPointerSize;
645 intptr_t value = output_[frame_index - 1]->GetFp();
646 output_frame->SetFrameSlot(output_offset, value);
647 intptr_t fp_value = top_address + output_offset;
648 output_frame->SetFp(fp_value);
649 if (FLAG_trace_deopt) {
650 PrintF(" 0x%08" V8PRIxPTR ": [top + %u] <- 0x%08" V8PRIxPTR
651 " ; caller's fp\n",
652 fp_value, output_offset, value);
653 }
654
655 // The context can be gotten from the previous frame.
656 output_offset -= kPointerSize;
657 value = output_[frame_index - 1]->GetContext();
658 output_frame->SetFrameSlot(output_offset, value);
659 if (FLAG_trace_deopt) {
660 PrintF(" 0x%08" V8PRIxPTR ": [top + %u] <- 0x%08" V8PRIxPTR
661 " ; context\n",
662 top_address + output_offset, output_offset, value);
663 }
664
665 // A marker value is used in place of the function.
666 output_offset -= kPointerSize;
667 value = reinterpret_cast<intptr_t>(Smi::FromInt(StackFrame::INTERNAL));
668 output_frame->SetFrameSlot(output_offset, value);
669 if (FLAG_trace_deopt) {
670 PrintF(" 0x%08" V8PRIxPTR ": [top + %u] <- 0x%08" V8PRIxPTR
671 " ; function (setter sentinel)\n",
672 top_address + output_offset, output_offset, value);
673 }
674
675 // Get Code object from setter stub.
676 output_offset -= kPointerSize;
677 Code* setter_stub =
678 isolate_->builtins()->builtin(Builtins::kStoreIC_Setter_ForDeopt);
679 value = reinterpret_cast<intptr_t>(setter_stub);
680 output_frame->SetFrameSlot(output_offset, value);
681 if (FLAG_trace_deopt) {
682 PrintF(" 0x%08" V8PRIxPTR ": [top + %u] <- 0x%08" V8PRIxPTR
683 " ; code object\n",
684 top_address + output_offset, output_offset, value);
685 }
686
687 // Skip receiver.
688 Translation::Opcode opcode =
689 static_cast<Translation::Opcode>(iterator->Next());
690 iterator->Skip(Translation::NumberOfOperandsFor(opcode));
691
692 // The implicit return value was part of the artificial setter stub
693 // environment.
694 output_offset -= kPointerSize;
695 DoTranslateCommand(iterator, frame_index, output_offset);
696
697 ASSERT(0 == output_offset);
698
699 intptr_t pc = reinterpret_cast<intptr_t>(
700 setter_stub->instruction_start() +
701 isolate_->heap()->setter_stub_deopt_pc_offset()->value());
702 output_frame->SetPc(pc);
703 }
704
705
706 // This code is very similar to ia32 code, but relies on register names (fp, sp) 598 // This code is very similar to ia32 code, but relies on register names (fp, sp)
707 // and how the frame is laid out. 599 // and how the frame is laid out.
708 void Deoptimizer::DoComputeJSFrame(TranslationIterator* iterator, 600 void Deoptimizer::DoComputeJSFrame(TranslationIterator* iterator,
709 int frame_index) { 601 int frame_index) {
710 // Read the ast node id, function, and frame height for this output frame. 602 // Read the ast node id, function, and frame height for this output frame.
711 BailoutId node_id = BailoutId(iterator->Next()); 603 BailoutId node_id = BailoutId(iterator->Next());
712 JSFunction* function; 604 JSFunction* function;
713 if (frame_index != 0) { 605 if (frame_index != 0) {
714 function = JSFunction::cast(ComputeLiteral(iterator->Next())); 606 function = JSFunction::cast(ComputeLiteral(iterator->Next()));
715 } else { 607 } else {
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1112 __ push(ip); 1004 __ push(ip);
1113 __ b(&done); 1005 __ b(&done);
1114 ASSERT(masm()->pc_offset() - start == table_entry_size_); 1006 ASSERT(masm()->pc_offset() - start == table_entry_size_);
1115 } 1007 }
1116 __ bind(&done); 1008 __ bind(&done);
1117 } 1009 }
1118 1010
1119 #undef __ 1011 #undef __
1120 1012
1121 } } // namespace v8::internal 1013 } } // namespace v8::internal
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