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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 "src/ast/ast-numbering.h" | 5 #include "src/ast/ast-numbering.h" |
6 | 6 |
7 #include "src/ast/ast.h" | 7 #include "src/ast/ast.h" |
8 #include "src/ast/scopes.h" | 8 #include "src/ast/scopes.h" |
9 | 9 |
10 namespace v8 { | 10 namespace v8 { |
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154 case VariableLocation::LOOKUP: | 154 case VariableLocation::LOOKUP: |
155 DisableFullCodegenAndCrankshaft( | 155 DisableFullCodegenAndCrankshaft( |
156 kReferenceToAVariableWhichRequiresDynamicLookup); | 156 kReferenceToAVariableWhichRequiresDynamicLookup); |
157 break; | 157 break; |
158 case VariableLocation::MODULE: | 158 case VariableLocation::MODULE: |
159 DisableFullCodegenAndCrankshaft(kReferenceToModuleVariable); | 159 DisableFullCodegenAndCrankshaft(kReferenceToModuleVariable); |
160 break; | 160 break; |
161 default: | 161 default: |
162 break; | 162 break; |
163 } | 163 } |
164 if (IsLexicalVariableMode(node->var()->mode())) { | 164 if (node->var()->binding_needs_init()) { |
165 // Disable FCG+CS for all variable bindings that need explicit | |
166 // initialization, i.e. ES2015 stylt const and let, but not | |
Yang
2016/12/06 05:48:14
Is 'stylt' a typo?
| |
167 // named function expressions. | |
165 DisableFullCodegenAndCrankshaft(kReferenceToLetOrConstVariable); | 168 DisableFullCodegenAndCrankshaft(kReferenceToLetOrConstVariable); |
166 } | 169 } |
167 node->set_base_id(ReserveIdRange(VariableProxy::num_ids())); | 170 node->set_base_id(ReserveIdRange(VariableProxy::num_ids())); |
168 } | 171 } |
169 | 172 |
170 | 173 |
171 void AstNumberingVisitor::VisitVariableProxy(VariableProxy* node) { | 174 void AstNumberingVisitor::VisitVariableProxy(VariableProxy* node) { |
172 VisitVariableProxyReference(node); | 175 VisitVariableProxyReference(node); |
173 ReserveFeedbackSlots(node); | 176 ReserveFeedbackSlots(node); |
174 } | 177 } |
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639 } | 642 } |
640 | 643 |
641 | 644 |
642 bool AstNumbering::Renumber(Isolate* isolate, Zone* zone, | 645 bool AstNumbering::Renumber(Isolate* isolate, Zone* zone, |
643 FunctionLiteral* function) { | 646 FunctionLiteral* function) { |
644 AstNumberingVisitor visitor(isolate, zone); | 647 AstNumberingVisitor visitor(isolate, zone); |
645 return visitor.Renumber(function); | 648 return visitor.Renumber(function); |
646 } | 649 } |
647 } // namespace internal | 650 } // namespace internal |
648 } // namespace v8 | 651 } // namespace v8 |
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