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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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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2560 virtual Range* InferRange(); | 2560 virtual Range* InferRange(); |
2561 }; | 2561 }; |
2562 | 2562 |
2563 | 2563 |
2564 class HMod: public HArithmeticBinaryOperation { | 2564 class HMod: public HArithmeticBinaryOperation { |
2565 public: | 2565 public: |
2566 HMod(HValue* left, HValue* right) : HArithmeticBinaryOperation(left, right) { | 2566 HMod(HValue* left, HValue* right) : HArithmeticBinaryOperation(left, right) { |
2567 SetFlag(kCanBeDivByZero); | 2567 SetFlag(kCanBeDivByZero); |
2568 } | 2568 } |
2569 | 2569 |
| 2570 bool HasPowerOf2Divisor() { |
| 2571 if (right()->IsConstant() && |
| 2572 HConstant::cast(right())->HasInteger32Value()) { |
| 2573 int32_t value = HConstant::cast(right())->Integer32Value(); |
| 2574 return value != 0 && (IsPowerOf2(value) || IsPowerOf2(-value)); |
| 2575 } |
| 2576 |
| 2577 return false; |
| 2578 } |
| 2579 |
2570 virtual HValue* EnsureAndPropagateNotMinusZero(BitVector* visited); | 2580 virtual HValue* EnsureAndPropagateNotMinusZero(BitVector* visited); |
2571 | 2581 |
2572 DECLARE_CONCRETE_INSTRUCTION(Mod, "mod") | 2582 DECLARE_CONCRETE_INSTRUCTION(Mod, "mod") |
2573 | 2583 |
2574 protected: | 2584 protected: |
2575 virtual bool DataEquals(HValue* other) { return true; } | 2585 virtual bool DataEquals(HValue* other) { return true; } |
2576 | 2586 |
2577 virtual Range* InferRange(); | 2587 virtual Range* InferRange(); |
2578 }; | 2588 }; |
2579 | 2589 |
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3451 HValue* object() { return left(); } | 3461 HValue* object() { return left(); } |
3452 HValue* key() { return right(); } | 3462 HValue* key() { return right(); } |
3453 }; | 3463 }; |
3454 | 3464 |
3455 #undef DECLARE_INSTRUCTION | 3465 #undef DECLARE_INSTRUCTION |
3456 #undef DECLARE_CONCRETE_INSTRUCTION | 3466 #undef DECLARE_CONCRETE_INSTRUCTION |
3457 | 3467 |
3458 } } // namespace v8::internal | 3468 } } // namespace v8::internal |
3459 | 3469 |
3460 #endif // V8_HYDROGEN_INSTRUCTIONS_H_ | 3470 #endif // V8_HYDROGEN_INSTRUCTIONS_H_ |
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