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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 #include "src/arm/lithium-codegen-arm.h" | 9 #include "src/arm/lithium-codegen-arm.h" |
10 #include "src/hydrogen-osr.h" | 10 #include "src/hydrogen-osr.h" |
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692 if (instr->representation().IsSmi() && constant_value > 0) { | 692 if (instr->representation().IsSmi() && constant_value > 0) { |
693 does_deopt = !instr->CheckUsesForFlag(HValue::kTruncatingToSmi); | 693 does_deopt = !instr->CheckUsesForFlag(HValue::kTruncatingToSmi); |
694 } | 694 } |
695 } else { | 695 } else { |
696 right = UseRegisterAtStart(right_value); | 696 right = UseRegisterAtStart(right_value); |
697 } | 697 } |
698 | 698 |
699 // Shift operations can only deoptimize if we do a logical shift | 699 // Shift operations can only deoptimize if we do a logical shift |
700 // by 0 and the result cannot be truncated to int32. | 700 // by 0 and the result cannot be truncated to int32. |
701 if (op == Token::SHR && constant_value == 0) { | 701 if (op == Token::SHR && constant_value == 0) { |
702 if (FLAG_opt_safe_uint32_operations) { | 702 does_deopt = !instr->CheckFlag(HInstruction::kUint32); |
703 does_deopt = !instr->CheckFlag(HInstruction::kUint32); | |
704 } else { | |
705 does_deopt = !instr->CheckUsesForFlag(HValue::kTruncatingToInt32); | |
706 } | |
707 } | 703 } |
708 | 704 |
709 LInstruction* result = | 705 LInstruction* result = |
710 DefineAsRegister(new(zone()) LShiftI(op, left, right, does_deopt)); | 706 DefineAsRegister(new(zone()) LShiftI(op, left, right, does_deopt)); |
711 return does_deopt ? AssignEnvironment(result) : result; | 707 return does_deopt ? AssignEnvironment(result) : result; |
712 } else { | 708 } else { |
713 return DoArithmeticT(op, instr); | 709 return DoArithmeticT(op, instr); |
714 } | 710 } |
715 } | 711 } |
716 | 712 |
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2635 LInstruction* LChunkBuilder::DoAllocateBlockContext( | 2631 LInstruction* LChunkBuilder::DoAllocateBlockContext( |
2636 HAllocateBlockContext* instr) { | 2632 HAllocateBlockContext* instr) { |
2637 LOperand* context = UseFixed(instr->context(), cp); | 2633 LOperand* context = UseFixed(instr->context(), cp); |
2638 LOperand* function = UseRegisterAtStart(instr->function()); | 2634 LOperand* function = UseRegisterAtStart(instr->function()); |
2639 LAllocateBlockContext* result = | 2635 LAllocateBlockContext* result = |
2640 new(zone()) LAllocateBlockContext(context, function); | 2636 new(zone()) LAllocateBlockContext(context, function); |
2641 return MarkAsCall(DefineFixed(result, cp), instr); | 2637 return MarkAsCall(DefineFixed(result, cp), instr); |
2642 } | 2638 } |
2643 | 2639 |
2644 } } // namespace v8::internal | 2640 } } // namespace v8::internal |
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