JDK-8075798 : Allow ADLC register class to depend on runtime conditions also for cisc-spillable classes
- Type: Enhancement
- Component: hotspot
- Sub-Component: compiler
- Affected Version: 9
- Priority: P4
- Status: Resolved
- Resolution: Fixed
- Submitted: 2015-03-24
- Updated: 2016-08-23
- Resolved: 2015-03-27
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| JDK 8 | JDK 9 |
|---|---|
8u60Fixed  |
9 b64Fixed |
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Description
In .ad files, it is difficult to have register classes that depend on runtime conditions. JDK-7090968 partially solves the problem, but it does not work in cases when not only a register mask, but also a "stack mask" is generated for a register class (i.e., the register class is "cisc-spillable"). The goal of this enhancement is to extend ADLC parsing to support register classes that depend on dynamic conditions, including cisc-spillable classes.
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