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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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| 785 } else { | 785 } else { |
| 786 right = UseFixed(right_value, ecx); | 786 right = UseFixed(right_value, ecx); |
| 787 } | 787 } |
| 788 | 788 |
| 789 // Shift operations can only deoptimize if we do a logical shift by 0 and | 789 // Shift operations can only deoptimize if we do a logical shift by 0 and |
| 790 // the result cannot be truncated to int32. | 790 // the result cannot be truncated to int32. |
| 791 if (op == Token::SHR && constant_value == 0) { | 791 if (op == Token::SHR && constant_value == 0) { |
| 792 if (FLAG_opt_safe_uint32_operations) { | 792 if (FLAG_opt_safe_uint32_operations) { |
| 793 does_deopt = !instr->CheckFlag(HInstruction::kUint32); | 793 does_deopt = !instr->CheckFlag(HInstruction::kUint32); |
| 794 } else { | 794 } else { |
| 795 does_deopt = !instr->CheckUsesForFlag(HValue::kTruncatingToInt32); | 795 does_deopt = !instr->CheckFlag(HInstruction::kAllUsesTruncatingToInt32); |
| 796 } | 796 } |
| 797 } | 797 } |
| 798 | 798 |
| 799 LInstruction* result = | 799 LInstruction* result = |
| 800 DefineSameAsFirst(new(zone()) LShiftI(op, left, right, does_deopt)); | 800 DefineSameAsFirst(new(zone()) LShiftI(op, left, right, does_deopt)); |
| 801 return does_deopt ? AssignEnvironment(result) : result; | 801 return does_deopt ? AssignEnvironment(result) : result; |
| 802 } | 802 } |
| 803 | 803 |
| 804 | 804 |
| 805 LInstruction* LChunkBuilder::DoArithmeticD(Token::Value op, | 805 LInstruction* LChunkBuilder::DoArithmeticD(Token::Value op, |
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| 2722 LInstruction* LChunkBuilder::DoLoadFieldByIndex(HLoadFieldByIndex* instr) { | 2722 LInstruction* LChunkBuilder::DoLoadFieldByIndex(HLoadFieldByIndex* instr) { |
| 2723 LOperand* object = UseRegister(instr->object()); | 2723 LOperand* object = UseRegister(instr->object()); |
| 2724 LOperand* index = UseTempRegister(instr->index()); | 2724 LOperand* index = UseTempRegister(instr->index()); |
| 2725 return DefineSameAsFirst(new(zone()) LLoadFieldByIndex(object, index)); | 2725 return DefineSameAsFirst(new(zone()) LLoadFieldByIndex(object, index)); |
| 2726 } | 2726 } |
| 2727 | 2727 |
| 2728 | 2728 |
| 2729 } } // namespace v8::internal | 2729 } } // namespace v8::internal |
| 2730 | 2730 |
| 2731 #endif // V8_TARGET_ARCH_IA32 | 2731 #endif // V8_TARGET_ARCH_IA32 |
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