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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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| 735 right = UseFixed(right_value, rcx); | 735 right = UseFixed(right_value, rcx); |
| 736 } | 736 } |
| 737 | 737 |
| 738 // Shift operations can only deoptimize if we do a logical shift by 0 and | 738 // Shift operations can only deoptimize if we do a logical shift by 0 and |
| 739 // the result cannot be truncated to int32. | 739 // the result cannot be truncated to int32. |
| 740 bool does_deopt = false; | 740 bool does_deopt = false; |
| 741 if (op == Token::SHR && constant_value == 0) { | 741 if (op == Token::SHR && constant_value == 0) { |
| 742 if (FLAG_opt_safe_uint32_operations) { | 742 if (FLAG_opt_safe_uint32_operations) { |
| 743 does_deopt = !instr->CheckFlag(HInstruction::kUint32); | 743 does_deopt = !instr->CheckFlag(HInstruction::kUint32); |
| 744 } else { | 744 } else { |
| 745 does_deopt = !instr->CheckUsesForFlag(HValue::kTruncatingToInt32); | 745 does_deopt = !instr->CheckFlag(HInstruction::kAllUsesTruncatingToInt32); |
| 746 } | 746 } |
| 747 } | 747 } |
| 748 | 748 |
| 749 LInstruction* result = | 749 LInstruction* result = |
| 750 DefineSameAsFirst(new(zone()) LShiftI(op, left, right, does_deopt)); | 750 DefineSameAsFirst(new(zone()) LShiftI(op, left, right, does_deopt)); |
| 751 return does_deopt ? AssignEnvironment(result) : result; | 751 return does_deopt ? AssignEnvironment(result) : result; |
| 752 } | 752 } |
| 753 | 753 |
| 754 | 754 |
| 755 LInstruction* LChunkBuilder::DoArithmeticD(Token::Value op, | 755 LInstruction* LChunkBuilder::DoArithmeticD(Token::Value op, |
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| 2526 LInstruction* LChunkBuilder::DoLoadFieldByIndex(HLoadFieldByIndex* instr) { | 2526 LInstruction* LChunkBuilder::DoLoadFieldByIndex(HLoadFieldByIndex* instr) { |
| 2527 LOperand* object = UseRegister(instr->object()); | 2527 LOperand* object = UseRegister(instr->object()); |
| 2528 LOperand* index = UseTempRegister(instr->index()); | 2528 LOperand* index = UseTempRegister(instr->index()); |
| 2529 return DefineSameAsFirst(new(zone()) LLoadFieldByIndex(object, index)); | 2529 return DefineSameAsFirst(new(zone()) LLoadFieldByIndex(object, index)); |
| 2530 } | 2530 } |
| 2531 | 2531 |
| 2532 | 2532 |
| 2533 } } // namespace v8::internal | 2533 } } // namespace v8::internal |
| 2534 | 2534 |
| 2535 #endif // V8_TARGET_ARCH_X64 | 2535 #endif // V8_TARGET_ARCH_X64 |
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