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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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648 | 648 |
649 LInstruction* LChunkBuilder::AssignEnvironment(LInstruction* instr) { | 649 LInstruction* LChunkBuilder::AssignEnvironment(LInstruction* instr) { |
650 HEnvironment* hydrogen_env = current_block_->last_environment(); | 650 HEnvironment* hydrogen_env = current_block_->last_environment(); |
651 instr->set_environment(CreateEnvironment(hydrogen_env)); | 651 instr->set_environment(CreateEnvironment(hydrogen_env)); |
652 return instr; | 652 return instr; |
653 } | 653 } |
654 | 654 |
655 | 655 |
656 LInstruction* LChunkBuilder::SetInstructionPendingDeoptimizationEnvironment( | 656 LInstruction* LChunkBuilder::SetInstructionPendingDeoptimizationEnvironment( |
657 LInstruction* instr, int ast_id) { | 657 LInstruction* instr, int ast_id) { |
658 ASSERT(instructions_pending_deoptimization_environment_ == NULL); | 658 ASSERT(instruction_pending_deoptimization_environment_ == NULL); |
659 ASSERT(pending_deoptimization_ast_id_ == AstNode::kNoNumber); | 659 ASSERT(pending_deoptimization_ast_id_ == AstNode::kNoNumber); |
660 instructions_pending_deoptimization_environment_ = instr; | 660 instruction_pending_deoptimization_environment_ = instr; |
661 pending_deoptimization_ast_id_ = ast_id; | 661 pending_deoptimization_ast_id_ = ast_id; |
662 return instr; | 662 return instr; |
663 } | 663 } |
664 | 664 |
665 | 665 |
666 void LChunkBuilder::ClearInstructionPendingDeoptimizationEnvironment() { | 666 void LChunkBuilder::ClearInstructionPendingDeoptimizationEnvironment() { |
667 instructions_pending_deoptimization_environment_ = NULL; | 667 instruction_pending_deoptimization_environment_ = NULL; |
668 pending_deoptimization_ast_id_ = AstNode::kNoNumber; | 668 pending_deoptimization_ast_id_ = AstNode::kNoNumber; |
669 } | 669 } |
670 | 670 |
671 | 671 |
672 LInstruction* LChunkBuilder::MarkAsCall(LInstruction* instr, | 672 LInstruction* LChunkBuilder::MarkAsCall(LInstruction* instr, |
673 HInstruction* hinstr, | 673 HInstruction* hinstr, |
674 CanDeoptimize can_deoptimize) { | 674 CanDeoptimize can_deoptimize) { |
675 allocator_->MarkAsCall(); | 675 allocator_->MarkAsCall(); |
676 instr = AssignPointerMap(instr); | 676 instr = AssignPointerMap(instr); |
677 | 677 |
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1456 return AssignEnvironment(DefineSameAsFirst(result)); | 1456 return AssignEnvironment(DefineSameAsFirst(result)); |
1457 } | 1457 } |
1458 | 1458 |
1459 | 1459 |
1460 LInstruction* LChunkBuilder::DoBoundsCheck(HBoundsCheck* instr) { | 1460 LInstruction* LChunkBuilder::DoBoundsCheck(HBoundsCheck* instr) { |
1461 return AssignEnvironment(new LBoundsCheck(UseRegisterAtStart(instr->index()), | 1461 return AssignEnvironment(new LBoundsCheck(UseRegisterAtStart(instr->index()), |
1462 UseRegister(instr->length()))); | 1462 UseRegister(instr->length()))); |
1463 } | 1463 } |
1464 | 1464 |
1465 | 1465 |
| 1466 LInstruction* LChunkBuilder::DoAbnormalExit(HAbnormalExit* instr) { |
| 1467 // The control instruction marking the end of a block that completed |
| 1468 // abruptly (e.g., threw an exception). There is nothing specific to do. |
| 1469 return NULL; |
| 1470 } |
| 1471 |
| 1472 |
1466 LInstruction* LChunkBuilder::DoThrow(HThrow* instr) { | 1473 LInstruction* LChunkBuilder::DoThrow(HThrow* instr) { |
1467 LOperand* value = UseFixed(instr->value(), r0); | 1474 LOperand* value = UseFixed(instr->value(), r0); |
1468 return MarkAsCall(new LThrow(value), instr); | 1475 return MarkAsCall(new LThrow(value), instr); |
1469 } | 1476 } |
1470 | 1477 |
1471 | 1478 |
1472 LInstruction* LChunkBuilder::DoChange(HChange* instr) { | 1479 LInstruction* LChunkBuilder::DoChange(HChange* instr) { |
1473 Representation from = instr->from(); | 1480 Representation from = instr->from(); |
1474 Representation to = instr->to(); | 1481 Representation to = instr->to(); |
1475 if (from.IsTagged()) { | 1482 if (from.IsTagged()) { |
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1830 } | 1837 } |
1831 } | 1838 } |
1832 | 1839 |
1833 ASSERT(env->length() == instr->environment_length()); | 1840 ASSERT(env->length() == instr->environment_length()); |
1834 | 1841 |
1835 // If there is an instruction pending deoptimization environment create a | 1842 // If there is an instruction pending deoptimization environment create a |
1836 // lazy bailout instruction to capture the environment. | 1843 // lazy bailout instruction to capture the environment. |
1837 if (pending_deoptimization_ast_id_ == instr->ast_id()) { | 1844 if (pending_deoptimization_ast_id_ == instr->ast_id()) { |
1838 LInstruction* result = new LLazyBailout; | 1845 LInstruction* result = new LLazyBailout; |
1839 result = AssignEnvironment(result); | 1846 result = AssignEnvironment(result); |
1840 instructions_pending_deoptimization_environment_-> | 1847 instruction_pending_deoptimization_environment_-> |
1841 set_deoptimization_environment(result->environment()); | 1848 set_deoptimization_environment(result->environment()); |
1842 ClearInstructionPendingDeoptimizationEnvironment(); | 1849 ClearInstructionPendingDeoptimizationEnvironment(); |
1843 return result; | 1850 return result; |
1844 } | 1851 } |
1845 | 1852 |
1846 return NULL; | 1853 return NULL; |
1847 } | 1854 } |
1848 | 1855 |
1849 | 1856 |
1850 LInstruction* LChunkBuilder::DoStackCheck(HStackCheck* instr) { | 1857 LInstruction* LChunkBuilder::DoStackCheck(HStackCheck* instr) { |
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1866 | 1873 |
1867 | 1874 |
1868 LInstruction* LChunkBuilder::DoLeaveInlined(HLeaveInlined* instr) { | 1875 LInstruction* LChunkBuilder::DoLeaveInlined(HLeaveInlined* instr) { |
1869 HEnvironment* outer = current_block_->last_environment()->outer(); | 1876 HEnvironment* outer = current_block_->last_environment()->outer(); |
1870 current_block_->UpdateEnvironment(outer); | 1877 current_block_->UpdateEnvironment(outer); |
1871 return NULL; | 1878 return NULL; |
1872 } | 1879 } |
1873 | 1880 |
1874 | 1881 |
1875 } } // namespace v8::internal | 1882 } } // namespace v8::internal |
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