JDK-8269879 : [PPC64] C2: Math.rint intrinsic uses wrong rounding mode
- Type: Bug
- Component: hotspot
- Sub-Component: compiler
- Affected Version: 16,17,18
- Priority: P2
- Status: Resolved
- Resolution: Fixed
- CPU: ppc
- Submitted: 2021-07-05
- Updated: 2021-07-15
- Resolved: 2021-07-07
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| JDK 17 | JDK 18 |
|---|---|
17 b31Fixed  |
18Fixed |
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Description
The test api/java_lang/Math/rintround is failing on PPC64 platforms when running with -Xcomp -XX:-TieredCompilation. C2 uses frin and xvrdpi instructions which don't use the required rounding mode. Rounding mode "RoundToDPIntegerNearEven" needs to be used. See https://docs.oracle.com/javase/8/docs/api/java/lang/Math.html#rint-double-
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