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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 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 #ifndef V8_COMPILER_CONTROL_BUILDERS_H_ | 5 #ifndef V8_COMPILER_CONTROL_BUILDERS_H_ |
6 #define V8_COMPILER_CONTROL_BUILDERS_H_ | 6 #define V8_COMPILER_CONTROL_BUILDERS_H_ |
7 | 7 |
8 #include "src/v8.h" | 8 #include "src/v8.h" |
9 | 9 |
10 #include "src/compiler/graph-builder.h" | 10 #include "src/compiler/graph-builder.h" |
11 #include "src/compiler/node.h" | 11 #include "src/compiler/node.h" |
12 | 12 |
13 namespace v8 { | 13 namespace v8 { |
14 namespace internal { | 14 namespace internal { |
15 namespace compiler { | 15 namespace compiler { |
16 | 16 |
17 | |
18 // Base class for all control builders. Also provides a common interface for | 17 // Base class for all control builders. Also provides a common interface for |
19 // control builders to handle 'break' and 'continue' statements when they are | 18 // control builders to handle 'break' and 'continue' statements when they are |
20 // used to model breakable statements. | 19 // used to model breakable statements. |
21 class ControlBuilder { | 20 class ControlBuilder { |
22 public: | 21 public: |
23 explicit ControlBuilder(StructuredGraphBuilder* builder) | 22 explicit ControlBuilder(StructuredGraphBuilder* builder) |
24 : builder_(builder) {} | 23 : builder_(builder) {} |
25 virtual ~ControlBuilder() {} | 24 virtual ~ControlBuilder() {} |
26 | 25 |
27 // Interface for break and continue. | 26 // Interface for break and continue. |
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42 | 41 |
43 // Tracks control flow for a conditional statement. | 42 // Tracks control flow for a conditional statement. |
44 class IfBuilder : public ControlBuilder { | 43 class IfBuilder : public ControlBuilder { |
45 public: | 44 public: |
46 explicit IfBuilder(StructuredGraphBuilder* builder) | 45 explicit IfBuilder(StructuredGraphBuilder* builder) |
47 : ControlBuilder(builder), | 46 : ControlBuilder(builder), |
48 then_environment_(NULL), | 47 then_environment_(NULL), |
49 else_environment_(NULL) {} | 48 else_environment_(NULL) {} |
50 | 49 |
51 // Primitive control commands. | 50 // Primitive control commands. |
52 void If(Node* condition); | 51 void If(Node* condition, BranchHint hint = BranchHint::kNone); |
53 void Then(); | 52 void Then(); |
54 void Else(); | 53 void Else(); |
55 void End(); | 54 void End(); |
56 | 55 |
57 private: | 56 private: |
58 Environment* then_environment_; // Environment after the 'then' body. | 57 Environment* then_environment_; // Environment after the 'then' body. |
59 Environment* else_environment_; // Environment for the 'else' body. | 58 Environment* else_environment_; // Environment for the 'else' body. |
60 }; | 59 }; |
61 | 60 |
62 | 61 |
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135 virtual void Break(); | 134 virtual void Break(); |
136 | 135 |
137 private: | 136 private: |
138 Environment* break_environment_; // Environment after the block exits. | 137 Environment* break_environment_; // Environment after the block exits. |
139 }; | 138 }; |
140 } | 139 } |
141 } | 140 } |
142 } // namespace v8::internal::compiler | 141 } // namespace v8::internal::compiler |
143 | 142 |
144 #endif // V8_COMPILER_CONTROL_BUILDERS_H_ | 143 #endif // V8_COMPILER_CONTROL_BUILDERS_H_ |
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