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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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