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| 1 // Copyright 2009 the V8 project authors. All rights reserved. | 1 // Copyright 2009 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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| 494 inline void LowerHeight(int count) { | 494 inline void LowerHeight(int count) { |
| 495 element_count_ -= count; | 495 element_count_ -= count; |
| 496 if (count >= kTOSKnownSmiMapSize) { | 496 if (count >= kTOSKnownSmiMapSize) { |
| 497 tos_known_smi_map_ = 0; | 497 tos_known_smi_map_ = 0; |
| 498 } else { | 498 } else { |
| 499 tos_known_smi_map_ >>= count; | 499 tos_known_smi_map_ >>= count; |
| 500 } | 500 } |
| 501 } | 501 } |
| 502 | 502 |
| 503 inline void RaiseHeight(int count, unsigned known_smi_map = 0) { | 503 inline void RaiseHeight(int count, unsigned known_smi_map = 0) { |
| 504 ASSERT(known_smi_map < (1u << count)); | 504 ASSERT(count >= 32 || known_smi_map < (1u << count)); |
| 505 element_count_ += count; | 505 element_count_ += count; |
| 506 if (count >= kTOSKnownSmiMapSize) { | 506 if (count >= kTOSKnownSmiMapSize) { |
| 507 tos_known_smi_map_ = known_smi_map; | 507 tos_known_smi_map_ = known_smi_map; |
| 508 } else { | 508 } else { |
| 509 tos_known_smi_map_ = ((tos_known_smi_map_ << count) | known_smi_map); | 509 tos_known_smi_map_ = ((tos_known_smi_map_ << count) | known_smi_map); |
| 510 } | 510 } |
| 511 } | 511 } |
| 512 | 512 |
| 513 friend class JumpTarget; | 513 friend class JumpTarget; |
| 514 }; | 514 }; |
| 515 | 515 |
| 516 | 516 |
| 517 } } // namespace v8::internal | 517 } } // namespace v8::internal |
| 518 | 518 |
| 519 #endif // V8_ARM_VIRTUAL_FRAME_ARM_H_ | 519 #endif // V8_ARM_VIRTUAL_FRAME_ARM_H_ |
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