JDK-8255349 : Vector API issues on Big Endian
- Type: Bug
- Component: hotspot
- Sub-Component: compiler
- Affected Version: 16
- Priority: P3
- Status: Resolved
- Resolution: Fixed
- Submitted: 2020-10-23
- Updated: 2024-02-21
- Resolved: 2020-10-26
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| JDK 16 |
|---|
16 b22Fixed  |
Related Reports
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Relates :
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Description
Several jdk/incubator/vector tests are failing with stack overflow due to endless recursion on Big Endian platforms. E.g. Int64VectorLoadStoreTests:
at jdk.incubator.vector/jdk.incubator.vector.IntVector.maybeSwap(IntVector.java:3330)
at jdk.incubator.vector/jdk.incubator.vector.IntVector.intoByteBuffer(IntVector.java:3151)
at jdk.incubator.vector/jdk.incubator.vector.AbstractVector.defaultReinterpret(AbstractVector.java:505)
at java.base/jdk.internal.vm.vector.VectorSupport.convert(VectorSupport.java:441)
at jdk.incubator.vector/jdk.incubator.vector.AbstractVector.convert0(AbstractVector.java:686)
at jdk.incubator.vector/jdk.incubator.vector.AbstractVector.asVectorRawTemplate(AbstractVector.java:173)
at jdk.incubator.vector/jdk.incubator.vector.AbstractVector.asByteVectorRawTemplate(AbstractVector.java:179)
at jdk.incubator.vector/jdk.incubator.vector.Int64Vector.asByteVectorRaw(Int64Vector.java:177)
at jdk.incubator.vector/jdk.incubator.vector.Int64Vector.asByteVectorRaw(Int64Vector.java:41)
at jdk.incubator.vector/jdk.incubator.vector.IntVector.reinterpretAsBytes(IntVector.java:3366)
at jdk.incubator.vector/jdk.incubator.vector.IntVector.maybeSwap(IntVector.java:3330)
Endianess in defaultReinterpret is currently hard coded and not checked.
In addition, VectorReshapeTests.java is failing due to incorrect size conversion for Big Endian in the test code (castByteArrayData).
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