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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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3383 return has_double_value_ && | 3383 return has_double_value_ && |
3384 (BitCast<int64_t>(double_value_) == BitCast<int64_t>(-0.0) || | 3384 (BitCast<int64_t>(double_value_) == BitCast<int64_t>(-0.0) || |
3385 FixedDoubleArray::is_the_hole_nan(double_value_) || | 3385 FixedDoubleArray::is_the_hole_nan(double_value_) || |
3386 std::isnan(double_value_)); | 3386 std::isnan(double_value_)); |
3387 } | 3387 } |
3388 | 3388 |
3389 bool NotInNewSpace() const { | 3389 bool NotInNewSpace() const { |
3390 return is_not_in_new_space_; | 3390 return is_not_in_new_space_; |
3391 } | 3391 } |
3392 | 3392 |
3393 bool ImmortalImmovable() const { | 3393 bool ImmortalImmovable() const; |
3394 if (has_int32_value_) { | |
3395 return false; | |
3396 } | |
3397 if (has_double_value_) { | |
3398 if (IsSpecialDouble()) { | |
3399 return true; | |
3400 } | |
3401 return false; | |
3402 } | |
3403 if (has_external_reference_value_) { | |
3404 return false; | |
3405 } | |
3406 | |
3407 ASSERT(!object_.handle().is_null()); | |
3408 Heap* heap = isolate()->heap(); | |
3409 ASSERT(!object_.IsKnownGlobal(heap->minus_zero_value())); | |
3410 ASSERT(!object_.IsKnownGlobal(heap->nan_value())); | |
3411 return | |
3412 object_.IsKnownGlobal(heap->undefined_value()) || | |
3413 object_.IsKnownGlobal(heap->uninitialized_value()) || | |
3414 object_.IsKnownGlobal(heap->null_value()) || | |
3415 object_.IsKnownGlobal(heap->true_value()) || | |
3416 object_.IsKnownGlobal(heap->false_value()) || | |
3417 object_.IsKnownGlobal(heap->the_hole_value()) || | |
3418 object_.IsKnownGlobal(heap->empty_string()) || | |
3419 object_.IsKnownGlobal(heap->empty_fixed_array()); | |
3420 } | |
3421 | 3394 |
3422 bool IsCell() const { | 3395 bool IsCell() const { |
3423 return is_cell_; | 3396 return is_cell_; |
3424 } | 3397 } |
3425 | 3398 |
3426 virtual Representation RequiredInputRepresentation(int index) V8_OVERRIDE { | 3399 virtual Representation RequiredInputRepresentation(int index) V8_OVERRIDE { |
3427 return Representation::None(); | 3400 return Representation::None(); |
3428 } | 3401 } |
3429 | 3402 |
3430 virtual Representation KnownOptimalRepresentation() V8_OVERRIDE { | 3403 virtual Representation KnownOptimalRepresentation() V8_OVERRIDE { |
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7411 virtual bool IsDeletable() const V8_OVERRIDE { return true; } | 7384 virtual bool IsDeletable() const V8_OVERRIDE { return true; } |
7412 }; | 7385 }; |
7413 | 7386 |
7414 | 7387 |
7415 #undef DECLARE_INSTRUCTION | 7388 #undef DECLARE_INSTRUCTION |
7416 #undef DECLARE_CONCRETE_INSTRUCTION | 7389 #undef DECLARE_CONCRETE_INSTRUCTION |
7417 | 7390 |
7418 } } // namespace v8::internal | 7391 } } // namespace v8::internal |
7419 | 7392 |
7420 #endif // V8_HYDROGEN_INSTRUCTIONS_H_ | 7393 #endif // V8_HYDROGEN_INSTRUCTIONS_H_ |
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