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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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1544 ASSERT(FLAG_allocation_site_pretenuring); | 1544 ASSERT(FLAG_allocation_site_pretenuring); |
1545 int value = memento_create_count(); | 1545 int value = memento_create_count(); |
1546 set_memento_create_count(value + 1); | 1546 set_memento_create_count(value + 1); |
1547 } | 1547 } |
1548 | 1548 |
1549 | 1549 |
1550 inline bool AllocationSite::DigestPretenuringFeedback() { | 1550 inline bool AllocationSite::DigestPretenuringFeedback() { |
1551 bool decision_changed = false; | 1551 bool decision_changed = false; |
1552 int create_count = memento_create_count(); | 1552 int create_count = memento_create_count(); |
1553 int found_count = memento_found_count(); | 1553 int found_count = memento_found_count(); |
1554 double ratio = static_cast<double>(found_count) / create_count; | 1554 bool minimum_mementos_created = create_count >= kPretenureMinimumCreated; |
| 1555 double ratio = |
| 1556 minimum_mementos_created || FLAG_trace_pretenuring_statistics ? |
| 1557 static_cast<double>(found_count) / create_count : 0.0; |
1555 PretenureFlag current_mode = GetPretenureMode(); | 1558 PretenureFlag current_mode = GetPretenureMode(); |
1556 | 1559 |
1557 if (create_count >= kPretenureMinimumCreated) { | 1560 if (minimum_mementos_created) { |
1558 PretenureDecision result = ratio >= kPretenureRatio | 1561 PretenureDecision result = ratio >= kPretenureRatio |
1559 ? kTenure | 1562 ? kTenure |
1560 : kDontTenure; | 1563 : kDontTenure; |
1561 set_pretenure_decision(result); | 1564 set_pretenure_decision(result); |
1562 if (current_mode != GetPretenureMode()) { | 1565 if (current_mode != GetPretenureMode()) { |
1563 decision_changed = true; | 1566 decision_changed = true; |
1564 dependent_code()->MarkCodeForDeoptimization( | 1567 dependent_code()->MarkCodeForDeoptimization( |
1565 GetIsolate(), | 1568 GetIsolate(), |
1566 DependentCode::kAllocationSiteTenuringChangedGroup); | 1569 DependentCode::kAllocationSiteTenuringChangedGroup); |
1567 } | 1570 } |
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6787 #undef READ_UINT32_FIELD | 6790 #undef READ_UINT32_FIELD |
6788 #undef WRITE_UINT32_FIELD | 6791 #undef WRITE_UINT32_FIELD |
6789 #undef READ_SHORT_FIELD | 6792 #undef READ_SHORT_FIELD |
6790 #undef WRITE_SHORT_FIELD | 6793 #undef WRITE_SHORT_FIELD |
6791 #undef READ_BYTE_FIELD | 6794 #undef READ_BYTE_FIELD |
6792 #undef WRITE_BYTE_FIELD | 6795 #undef WRITE_BYTE_FIELD |
6793 | 6796 |
6794 } } // namespace v8::internal | 6797 } } // namespace v8::internal |
6795 | 6798 |
6796 #endif // V8_OBJECTS_INL_H_ | 6799 #endif // V8_OBJECTS_INL_H_ |
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