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| 1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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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| 194 Assembler::target_address_at(pc_after - 4 * kInstrSize)) == | 194 Assembler::target_address_at(pc_after - 4 * kInstrSize)) == |
| 195 reinterpret_cast<uint32_t>(replacement_code->entry())); | 195 reinterpret_cast<uint32_t>(replacement_code->entry())); |
| 196 Assembler::set_target_address_at(pc_after - 4 * kInstrSize, | 196 Assembler::set_target_address_at(pc_after - 4 * kInstrSize, |
| 197 check_code->entry()); | 197 check_code->entry()); |
| 198 | 198 |
| 199 check_code->GetHeap()->incremental_marking()->RecordCodeTargetPatch( | 199 check_code->GetHeap()->incremental_marking()->RecordCodeTargetPatch( |
| 200 unoptimized_code, pc_after - 4 * kInstrSize, check_code); | 200 unoptimized_code, pc_after - 4 * kInstrSize, check_code); |
| 201 } | 201 } |
| 202 | 202 |
| 203 | 203 |
| 204 static int LookupBailoutId(DeoptimizationInputData* data, unsigned ast_id) { | 204 static int LookupBailoutId(DeoptimizationInputData* data, BailoutId ast_id) { |
| 205 ByteArray* translations = data->TranslationByteArray(); | 205 ByteArray* translations = data->TranslationByteArray(); |
| 206 int length = data->DeoptCount(); | 206 int length = data->DeoptCount(); |
| 207 for (int i = 0; i < length; i++) { | 207 for (int i = 0; i < length; i++) { |
| 208 if (static_cast<unsigned>(data->AstId(i)->value()) == ast_id) { | 208 if (data->AstId(i) == ast_id) { |
| 209 TranslationIterator it(translations, data->TranslationIndex(i)->value()); | 209 TranslationIterator it(translations, data->TranslationIndex(i)->value()); |
| 210 int value = it.Next(); | 210 int value = it.Next(); |
| 211 ASSERT(Translation::BEGIN == static_cast<Translation::Opcode>(value)); | 211 ASSERT(Translation::BEGIN == static_cast<Translation::Opcode>(value)); |
| 212 // Read the number of frames. | 212 // Read the number of frames. |
| 213 value = it.Next(); | 213 value = it.Next(); |
| 214 if (value == 1) return i; | 214 if (value == 1) return i; |
| 215 } | 215 } |
| 216 } | 216 } |
| 217 UNREACHABLE(); | 217 UNREACHABLE(); |
| 218 return -1; | 218 return -1; |
| 219 } | 219 } |
| 220 | 220 |
| 221 | 221 |
| 222 void Deoptimizer::DoComputeOsrOutputFrame() { | 222 void Deoptimizer::DoComputeOsrOutputFrame() { |
| 223 DeoptimizationInputData* data = DeoptimizationInputData::cast( | 223 DeoptimizationInputData* data = DeoptimizationInputData::cast( |
| 224 optimized_code_->deoptimization_data()); | 224 optimized_code_->deoptimization_data()); |
| 225 unsigned ast_id = data->OsrAstId()->value(); | 225 unsigned ast_id = data->OsrAstId()->value(); |
| 226 | 226 |
| 227 int bailout_id = LookupBailoutId(data, ast_id); | 227 int bailout_id = LookupBailoutId(data, BailoutId(ast_id)); |
| 228 unsigned translation_index = data->TranslationIndex(bailout_id)->value(); | 228 unsigned translation_index = data->TranslationIndex(bailout_id)->value(); |
| 229 ByteArray* translations = data->TranslationByteArray(); | 229 ByteArray* translations = data->TranslationByteArray(); |
| 230 | 230 |
| 231 TranslationIterator iterator(translations, translation_index); | 231 TranslationIterator iterator(translations, translation_index); |
| 232 Translation::Opcode opcode = | 232 Translation::Opcode opcode = |
| 233 static_cast<Translation::Opcode>(iterator.Next()); | 233 static_cast<Translation::Opcode>(iterator.Next()); |
| 234 ASSERT(Translation::BEGIN == opcode); | 234 ASSERT(Translation::BEGIN == opcode); |
| 235 USE(opcode); | 235 USE(opcode); |
| 236 int count = iterator.Next(); | 236 int count = iterator.Next(); |
| 237 iterator.Skip(1); // Drop JS frame count. | 237 iterator.Skip(1); // Drop JS frame count. |
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| 580 isolate_->heap()->construct_stub_deopt_pc_offset()->value()); | 580 isolate_->heap()->construct_stub_deopt_pc_offset()->value()); |
| 581 output_frame->SetPc(pc); | 581 output_frame->SetPc(pc); |
| 582 } | 582 } |
| 583 | 583 |
| 584 | 584 |
| 585 // This code is very similar to ia32/arm code, but relies on register names | 585 // This code is very similar to ia32/arm code, but relies on register names |
| 586 // (fp, sp) and how the frame is laid out. | 586 // (fp, sp) and how the frame is laid out. |
| 587 void Deoptimizer::DoComputeJSFrame(TranslationIterator* iterator, | 587 void Deoptimizer::DoComputeJSFrame(TranslationIterator* iterator, |
| 588 int frame_index) { | 588 int frame_index) { |
| 589 // Read the ast node id, function, and frame height for this output frame. | 589 // Read the ast node id, function, and frame height for this output frame. |
| 590 int node_id = iterator->Next(); | 590 BailoutId node_id = BailoutId(iterator->Next()); |
| 591 JSFunction* function; | 591 JSFunction* function; |
| 592 if (frame_index != 0) { | 592 if (frame_index != 0) { |
| 593 function = JSFunction::cast(ComputeLiteral(iterator->Next())); | 593 function = JSFunction::cast(ComputeLiteral(iterator->Next())); |
| 594 } else { | 594 } else { |
| 595 int closure_id = iterator->Next(); | 595 int closure_id = iterator->Next(); |
| 596 USE(closure_id); | 596 USE(closure_id); |
| 597 ASSERT_EQ(Translation::kSelfLiteralId, closure_id); | 597 ASSERT_EQ(Translation::kSelfLiteralId, closure_id); |
| 598 function = function_; | 598 function = function_; |
| 599 } | 599 } |
| 600 unsigned height = iterator->Next(); | 600 unsigned height = iterator->Next(); |
| 601 unsigned height_in_bytes = height * kPointerSize; | 601 unsigned height_in_bytes = height * kPointerSize; |
| 602 if (FLAG_trace_deopt) { | 602 if (FLAG_trace_deopt) { |
| 603 PrintF(" translating "); | 603 PrintF(" translating "); |
| 604 function->PrintName(); | 604 function->PrintName(); |
| 605 PrintF(" => node=%d, height=%d\n", node_id, height_in_bytes); | 605 PrintF(" => node=%d, height=%d\n", node_id.ToInt(), height_in_bytes); |
| 606 } | 606 } |
| 607 | 607 |
| 608 // The 'fixed' part of the frame consists of the incoming parameters and | 608 // The 'fixed' part of the frame consists of the incoming parameters and |
| 609 // the part described by JavaScriptFrameConstants. | 609 // the part described by JavaScriptFrameConstants. |
| 610 unsigned fixed_frame_size = ComputeFixedSize(function); | 610 unsigned fixed_frame_size = ComputeFixedSize(function); |
| 611 unsigned input_frame_size = input_->GetFrameSize(); | 611 unsigned input_frame_size = input_->GetFrameSize(); |
| 612 unsigned output_frame_size = height_in_bytes + fixed_frame_size; | 612 unsigned output_frame_size = height_in_bytes + fixed_frame_size; |
| 613 | 613 |
| 614 // Allocate and store the output frame description. | 614 // Allocate and store the output frame description. |
| 615 FrameDescription* output_frame = | 615 FrameDescription* output_frame = |
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| 1015 } | 1015 } |
| 1016 | 1016 |
| 1017 ASSERT_EQ(masm()->SizeOfCodeGeneratedSince(&table_start), | 1017 ASSERT_EQ(masm()->SizeOfCodeGeneratedSince(&table_start), |
| 1018 count() * table_entry_size_); | 1018 count() * table_entry_size_); |
| 1019 } | 1019 } |
| 1020 | 1020 |
| 1021 #undef __ | 1021 #undef __ |
| 1022 | 1022 |
| 1023 | 1023 |
| 1024 } } // namespace v8::internal | 1024 } } // namespace v8::internal |
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