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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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1724 HChange(HValue* value, | 1724 HChange(HValue* value, |
1725 Representation to, | 1725 Representation to, |
1726 bool is_truncating_to_smi, | 1726 bool is_truncating_to_smi, |
1727 bool is_truncating_to_int32) | 1727 bool is_truncating_to_int32) |
1728 : HUnaryOperation(value) { | 1728 : HUnaryOperation(value) { |
1729 ASSERT(!value->representation().IsNone()); | 1729 ASSERT(!value->representation().IsNone()); |
1730 ASSERT(!to.IsNone()); | 1730 ASSERT(!to.IsNone()); |
1731 ASSERT(!value->representation().Equals(to)); | 1731 ASSERT(!value->representation().Equals(to)); |
1732 set_representation(to); | 1732 set_representation(to); |
1733 SetFlag(kUseGVN); | 1733 SetFlag(kUseGVN); |
| 1734 SetFlag(kCanOverflow); |
1734 if (is_truncating_to_smi) { | 1735 if (is_truncating_to_smi) { |
1735 SetFlag(kTruncatingToSmi); | 1736 SetFlag(kTruncatingToSmi); |
1736 SetFlag(kTruncatingToInt32); | 1737 SetFlag(kTruncatingToInt32); |
1737 } | 1738 } |
1738 if (is_truncating_to_int32) SetFlag(kTruncatingToInt32); | 1739 if (is_truncating_to_int32) SetFlag(kTruncatingToInt32); |
1739 if (value->representation().IsSmi() || value->type().IsSmi()) { | 1740 if (value->representation().IsSmi() || value->type().IsSmi()) { |
1740 set_type(HType::Smi()); | 1741 set_type(HType::Smi()); |
1741 } else { | 1742 } else { |
1742 set_type(HType::TaggedNumber()); | 1743 set_type(HType::TaggedNumber()); |
1743 if (to.IsTagged()) SetChangesFlag(kNewSpacePromotion); | 1744 if (to.IsTagged()) SetChangesFlag(kNewSpacePromotion); |
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7517 virtual bool IsDeletable() const V8_OVERRIDE { return true; } | 7518 virtual bool IsDeletable() const V8_OVERRIDE { return true; } |
7518 }; | 7519 }; |
7519 | 7520 |
7520 | 7521 |
7521 #undef DECLARE_INSTRUCTION | 7522 #undef DECLARE_INSTRUCTION |
7522 #undef DECLARE_CONCRETE_INSTRUCTION | 7523 #undef DECLARE_CONCRETE_INSTRUCTION |
7523 | 7524 |
7524 } } // namespace v8::internal | 7525 } } // namespace v8::internal |
7525 | 7526 |
7526 #endif // V8_HYDROGEN_INSTRUCTIONS_H_ | 7527 #endif // V8_HYDROGEN_INSTRUCTIONS_H_ |
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