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1 // Copyright 2008 the V8 project authors. All rights reserved. | 1 // Copyright 2008 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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105 return !is_bound() && reaching_frames_.is_empty(); | 105 return !is_bound() && reaching_frames_.is_empty(); |
106 } | 106 } |
107 | 107 |
108 // Emit a jump to the target. There must be a current frame at the | 108 // Emit a jump to the target. There must be a current frame at the |
109 // jump and there will be no current frame after the jump. | 109 // jump and there will be no current frame after the jump. |
110 virtual void Jump(); | 110 virtual void Jump(); |
111 virtual void Jump(Result* arg); | 111 virtual void Jump(Result* arg); |
112 | 112 |
113 // Emit a conditional branch to the target. There must be a current | 113 // Emit a conditional branch to the target. There must be a current |
114 // frame at the branch. The current frame will fall through to the | 114 // frame at the branch. The current frame will fall through to the |
115 // code after the branch. | 115 // code after the branch. The arg is a result that is live both at |
| 116 // the target and the fall-through. |
116 virtual void Branch(Condition cc, Hint hint = no_hint); | 117 virtual void Branch(Condition cc, Hint hint = no_hint); |
117 virtual void Branch(Condition cc, Result* arg, Hint hint = no_hint); | 118 virtual void Branch(Condition cc, Result* arg, Hint hint = no_hint); |
118 | 119 |
119 // Bind a jump target. If there is no current frame at the binding | 120 // Bind a jump target. If there is no current frame at the binding |
120 // site, there must be at least one frame reaching via a forward | 121 // site, there must be at least one frame reaching via a forward |
121 // jump. | 122 // jump. |
122 virtual void Bind(); | 123 virtual void Bind(); |
123 virtual void Bind(Result* arg); | 124 virtual void Bind(Result* arg); |
124 | 125 |
125 // Emit a call to a jump target. There must be a current frame at | 126 // Emit a call to a jump target. There must be a current frame at |
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270 bool is_shadowing_; | 271 bool is_shadowing_; |
271 #endif | 272 #endif |
272 | 273 |
273 DISALLOW_COPY_AND_ASSIGN(ShadowTarget); | 274 DISALLOW_COPY_AND_ASSIGN(ShadowTarget); |
274 }; | 275 }; |
275 | 276 |
276 | 277 |
277 } } // namespace v8::internal | 278 } } // namespace v8::internal |
278 | 279 |
279 #endif // V8_JUMP_TARGET_H_ | 280 #endif // V8_JUMP_TARGET_H_ |
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