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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 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include <sstream> | 5 #include <sstream> |
6 | 6 |
7 #include "src/v8.h" | 7 #include "src/v8.h" |
8 | 8 |
9 #if V8_TARGET_ARCH_IA32 | 9 #if V8_TARGET_ARCH_IA32 |
10 | 10 |
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732 if (instr->representation().IsSmi() && constant_value > 0) { | 732 if (instr->representation().IsSmi() && constant_value > 0) { |
733 does_deopt = !instr->CheckUsesForFlag(HValue::kTruncatingToSmi); | 733 does_deopt = !instr->CheckUsesForFlag(HValue::kTruncatingToSmi); |
734 } | 734 } |
735 } else { | 735 } else { |
736 right = UseFixed(right_value, ecx); | 736 right = UseFixed(right_value, ecx); |
737 } | 737 } |
738 | 738 |
739 // Shift operations can only deoptimize if we do a logical shift by 0 and | 739 // Shift operations can only deoptimize if we do a logical shift by 0 and |
740 // the result cannot be truncated to int32. | 740 // the result cannot be truncated to int32. |
741 if (op == Token::SHR && constant_value == 0) { | 741 if (op == Token::SHR && constant_value == 0) { |
742 if (FLAG_opt_safe_uint32_operations) { | 742 does_deopt = !instr->CheckFlag(HInstruction::kUint32); |
743 does_deopt = !instr->CheckFlag(HInstruction::kUint32); | |
744 } else { | |
745 does_deopt = !instr->CheckUsesForFlag(HValue::kTruncatingToInt32); | |
746 } | |
747 } | 743 } |
748 | 744 |
749 LInstruction* result = | 745 LInstruction* result = |
750 DefineSameAsFirst(new(zone()) LShiftI(op, left, right, does_deopt)); | 746 DefineSameAsFirst(new(zone()) LShiftI(op, left, right, does_deopt)); |
751 return does_deopt ? AssignEnvironment(result) : result; | 747 return does_deopt ? AssignEnvironment(result) : result; |
752 } else { | 748 } else { |
753 return DoArithmeticT(op, instr); | 749 return DoArithmeticT(op, instr); |
754 } | 750 } |
755 } | 751 } |
756 | 752 |
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2709 LOperand* function = UseRegisterAtStart(instr->function()); | 2705 LOperand* function = UseRegisterAtStart(instr->function()); |
2710 LAllocateBlockContext* result = | 2706 LAllocateBlockContext* result = |
2711 new(zone()) LAllocateBlockContext(context, function); | 2707 new(zone()) LAllocateBlockContext(context, function); |
2712 return MarkAsCall(DefineFixed(result, esi), instr); | 2708 return MarkAsCall(DefineFixed(result, esi), instr); |
2713 } | 2709 } |
2714 | 2710 |
2715 | 2711 |
2716 } } // namespace v8::internal | 2712 } } // namespace v8::internal |
2717 | 2713 |
2718 #endif // V8_TARGET_ARCH_IA32 | 2714 #endif // V8_TARGET_ARCH_IA32 |
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