Details
Description
This information can not only be used for refinement (update rs), but also during scan rs phase.
Further, it proved useful to rearrange the filters in the card scanning code a bit to
- not do work if we can quickly determine we won't use it
- optimize a bit for duplicate card scans by moving the card table check first
Attachments
Issue Links
- relates to
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JDK-8177044 Remove _scan_top from HeapRegion
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- Resolved
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