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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 // 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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4883 static HInstruction* New(Zone* zone, | 4883 static HInstruction* New(Zone* zone, |
4884 HValue* context, | 4884 HValue* context, |
4885 HValue* left, | 4885 HValue* left, |
4886 HValue* right); | 4886 HValue* right); |
4887 | 4887 |
4888 virtual Range* InferRange(Zone* zone); | 4888 virtual Range* InferRange(Zone* zone); |
4889 | 4889 |
4890 virtual void UpdateRepresentation(Representation new_rep, | 4890 virtual void UpdateRepresentation(Representation new_rep, |
4891 HInferRepresentationPhase* h_infer, | 4891 HInferRepresentationPhase* h_infer, |
4892 const char* reason) { | 4892 const char* reason) { |
4893 if (new_rep.IsSmi()) new_rep = Representation::Integer32(); | 4893 if (new_rep.IsSmi() && |
| 4894 !(right()->IsInteger32Constant() && |
| 4895 right()->GetInteger32Constant() >= 0)) { |
| 4896 new_rep = Representation::Integer32(); |
| 4897 } |
4894 HBitwiseBinaryOperation::UpdateRepresentation(new_rep, h_infer, reason); | 4898 HBitwiseBinaryOperation::UpdateRepresentation(new_rep, h_infer, reason); |
4895 } | 4899 } |
4896 | 4900 |
4897 DECLARE_CONCRETE_INSTRUCTION(Shl) | 4901 DECLARE_CONCRETE_INSTRUCTION(Shl) |
4898 | 4902 |
4899 protected: | 4903 protected: |
4900 virtual bool DataEquals(HValue* other) { return true; } | 4904 virtual bool DataEquals(HValue* other) { return true; } |
4901 | 4905 |
4902 private: | 4906 private: |
4903 HShl(HValue* context, HValue* left, HValue* right) | 4907 HShl(HValue* context, HValue* left, HValue* right) |
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6947 virtual bool IsDeletable() const { return true; } | 6951 virtual bool IsDeletable() const { return true; } |
6948 }; | 6952 }; |
6949 | 6953 |
6950 | 6954 |
6951 #undef DECLARE_INSTRUCTION | 6955 #undef DECLARE_INSTRUCTION |
6952 #undef DECLARE_CONCRETE_INSTRUCTION | 6956 #undef DECLARE_CONCRETE_INSTRUCTION |
6953 | 6957 |
6954 } } // namespace v8::internal | 6958 } } // namespace v8::internal |
6955 | 6959 |
6956 #endif // V8_HYDROGEN_INSTRUCTIONS_H_ | 6960 #endif // V8_HYDROGEN_INSTRUCTIONS_H_ |
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