JDK-8231085 : C2/GC: Better GC-interface for expanding clone
- Type: Enhancement
- Component: hotspot
- Sub-Component: compiler
- Affected Version: 11,14
- Priority: P4
- Status: Resolved
- Resolution: Fixed
- OS: generic
- CPU: generic
- Submitted: 2019-09-16
- Updated: 2019-10-28
- Resolved: 2019-09-18
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| JDK 11 | JDK 14 |
|---|---|
| 11.0.6Fixed | 14 b15Fixed  |
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Description
The current GC-interface for inserting barriers after expanded clones is rather rigid: it only allows to insert a barrier after the expanded clone. It does, for example, not allow a barrier *before* the clone. Also, a possible optimization would be to generate only a single call for both the barrier and the actual clone, i.e. replace the whole clone-expansion with a GC-specific call.
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