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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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| 731 } else { | 731 } else { |
| 732 right = UseRegisterAtStart(right_value); | 732 right = UseRegisterAtStart(right_value); |
| 733 } | 733 } |
| 734 | 734 |
| 735 // Shift operations can only deoptimize if we do a logical shift | 735 // Shift operations can only deoptimize if we do a logical shift |
| 736 // by 0 and the result cannot be truncated to int32. | 736 // by 0 and the result cannot be truncated to int32. |
| 737 if (op == Token::SHR && constant_value == 0) { | 737 if (op == Token::SHR && constant_value == 0) { |
| 738 if (FLAG_opt_safe_uint32_operations) { | 738 if (FLAG_opt_safe_uint32_operations) { |
| 739 does_deopt = !instr->CheckFlag(HInstruction::kUint32); | 739 does_deopt = !instr->CheckFlag(HInstruction::kUint32); |
| 740 } else { | 740 } else { |
| 741 does_deopt = !instr->CheckUsesForFlag(HValue::kTruncatingToInt32); | 741 does_deopt = !instr->CheckFlag(HInstruction::kAllUsesTruncatingToInt32); |
| 742 } | 742 } |
| 743 } | 743 } |
| 744 | 744 |
| 745 LInstruction* result = | 745 LInstruction* result = |
| 746 DefineAsRegister(new(zone()) LShiftI(op, left, right, does_deopt)); | 746 DefineAsRegister(new(zone()) LShiftI(op, left, right, does_deopt)); |
| 747 return does_deopt ? AssignEnvironment(result) : result; | 747 return does_deopt ? AssignEnvironment(result) : result; |
| 748 } | 748 } |
| 749 | 749 |
| 750 | 750 |
| 751 LInstruction* LChunkBuilder::DoArithmeticD(Token::Value op, | 751 LInstruction* LChunkBuilder::DoArithmeticD(Token::Value op, |
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| 2583 | 2583 |
| 2584 | 2584 |
| 2585 LInstruction* LChunkBuilder::DoLoadFieldByIndex(HLoadFieldByIndex* instr) { | 2585 LInstruction* LChunkBuilder::DoLoadFieldByIndex(HLoadFieldByIndex* instr) { |
| 2586 LOperand* object = UseRegister(instr->object()); | 2586 LOperand* object = UseRegister(instr->object()); |
| 2587 LOperand* index = UseRegister(instr->index()); | 2587 LOperand* index = UseRegister(instr->index()); |
| 2588 return DefineAsRegister(new(zone()) LLoadFieldByIndex(object, index)); | 2588 return DefineAsRegister(new(zone()) LLoadFieldByIndex(object, index)); |
| 2589 } | 2589 } |
| 2590 | 2590 |
| 2591 | 2591 |
| 2592 } } // namespace v8::internal | 2592 } } // namespace v8::internal |
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