JDK-8077838 : Recent developments for ppc.
- Type: Enhancement
- Component: hotspot
- Sub-Component: compiler
- Affected Version: 9
- Priority: P4
- Status: Resolved
- Resolution: Fixed
- CPU: ppc
- Submitted: 2015-04-15
- Updated: 2015-06-03
- Resolved: 2015-04-24
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| JDK 9 |
|---|
9 b64Fixed  |
Related Reports
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Relates :
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Description
This change contains a lot of recent developments for ppc, mostly by SAP.
- Recognition of Power 8 processors (by Tiago Daitx).
- Support for more new Power 8 instructions.
- Support for transactional memory. This is implemented but not yet tested
thoroughly due to limitiations of the OS support. Not enabled.
- java.lang.math.*Exact intrinsics
- Some C2 optimizations and fixes:
* Handling of flag registers. Some instructions would lead to uncompilable
methods due to not allocatable register patterns.
* Free some integer registers to use them for allocation. Handle compressed
oops base as constant.
* Unscaled class compression.
- Type profiling fixes.