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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #include "vm/constant_propagator.h" | 5 #include "vm/constant_propagator.h" |
6 | 6 |
7 #include "vm/bit_vector.h" | 7 #include "vm/bit_vector.h" |
8 #include "vm/flow_graph_builder.h" | 8 #include "vm/flow_graph_builder.h" |
9 #include "vm/flow_graph_compiler.h" | 9 #include "vm/flow_graph_compiler.h" |
10 #include "vm/flow_graph_range_analysis.h" | 10 #include "vm/flow_graph_range_analysis.h" |
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757 ((rep == kUnboxedMint) && (value_cid == kMintCid))); | 757 ((rep == kUnboxedMint) && (value_cid == kMintCid))); |
758 // The representation guarantees the type check to be true. | 758 // The representation guarantees the type check to be true. |
759 SetValue(instr, instr->negate_result() ? Bool::False() : Bool::True()); | 759 SetValue(instr, instr->negate_result() ? Bool::False() : Bool::True()); |
760 } else { | 760 } else { |
761 SetValue(instr, non_constant_); | 761 SetValue(instr, non_constant_); |
762 } | 762 } |
763 } else if (IsConstant(value)) { | 763 } else if (IsConstant(value)) { |
764 if (value.IsInstance()) { | 764 if (value.IsInstance()) { |
765 const Instance& instance = Instance::Cast(value); | 765 const Instance& instance = Instance::Cast(value); |
766 const AbstractType& checked_type = instr->type(); | 766 const AbstractType& checked_type = instr->type(); |
767 if (instr->instantiator()->BindsToConstantNull() && | 767 if (instr->instantiator_type_arguments()->BindsToConstantNull()) { |
768 instr->instantiator_type_arguments()->BindsToConstantNull()) { | |
769 const TypeArguments& checked_type_arguments = TypeArguments::Handle(); | 768 const TypeArguments& checked_type_arguments = TypeArguments::Handle(); |
770 Error& bound_error = Error::Handle(); | 769 Error& bound_error = Error::Handle(); |
771 bool is_instance = instance.IsInstanceOf(checked_type, | 770 bool is_instance = instance.IsInstanceOf(checked_type, |
772 checked_type_arguments, | 771 checked_type_arguments, |
773 &bound_error); | 772 &bound_error); |
774 // Can only have bound error with generics. | 773 // Can only have bound error with generics. |
775 ASSERT(bound_error.IsNull()); | 774 ASSERT(bound_error.IsNull()); |
776 SetValue(instr, Bool::Get(instr->negate_result() | 775 SetValue(instr, Bool::Get(instr->negate_result() |
777 ? !is_instance : is_instance)); | 776 ? !is_instance : is_instance)); |
778 return; | 777 return; |
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1683 graph_->MergeBlocks(); | 1682 graph_->MergeBlocks(); |
1684 GrowableArray<BitVector*> dominance_frontier; | 1683 GrowableArray<BitVector*> dominance_frontier; |
1685 graph_->ComputeDominators(&dominance_frontier); | 1684 graph_->ComputeDominators(&dominance_frontier); |
1686 | 1685 |
1687 if (FLAG_trace_constant_propagation) { | 1686 if (FLAG_trace_constant_propagation) { |
1688 FlowGraphPrinter::PrintGraph("After CP", graph_); | 1687 FlowGraphPrinter::PrintGraph("After CP", graph_); |
1689 } | 1688 } |
1690 } | 1689 } |
1691 | 1690 |
1692 } // namespace dart | 1691 } // namespace dart |
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