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Bug
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Resolution: Fixed
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P2
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11, 11.0.2, 12, 13
| Issue | Fix Version | Assignee | Priority | Status | Resolution | Resolved In Build |
|---|---|---|---|---|---|---|
| JDK-8216344 | 13 | Sandhya Viswanathan | P2 | Resolved | Fixed | b03 |
| JDK-8216296 | 12.0.1 | Sandhya Viswanathan | P2 | Resolved | Fixed | b02 |
| JDK-8226559 | 11.0.5-oracle | Sandhya Viswanathan | P2 | Resolved | Fixed | b02 |
| JDK-8216290 | 11.0.3 | Sandhya Viswanathan | P2 | Resolved | Fixed | master |
We noticed that the register to register moves in x86.ad file attempts to generate emovdqu when UseAVX==2.
The instruction emovdquq is only supported on platforms where UseAVX > 2 (AVX 512).
The following rules in x86.ad file need to be corrected:
MoveVecX2Leg
MoveLeg2VecX
MoveVecY2Leg
MoveLeg2VecY
The above move rules when activated through register allocator and could result in illegal instruction exception.
Also there is similar usage of (UseAVX < 2) in c1_LIRAssembler which could be written as (UseAVX <=2) for better code sequence.
The instruction emovdquq is only supported on platforms where UseAVX > 2 (AVX 512).
The following rules in x86.ad file need to be corrected:
MoveVecX2Leg
MoveLeg2VecX
MoveVecY2Leg
MoveLeg2VecY
The above move rules when activated through register allocator and could result in illegal instruction exception.
Also there is similar usage of (UseAVX < 2) in c1_LIRAssembler which could be written as (UseAVX <=2) for better code sequence.
- backported by
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JDK-8216290 Register to register spill may use AVX 512 move instruction on unsupported platform.
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- Resolved
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- Resolved
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- Resolved
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- Resolved
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- relates to
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JDK-8210764 Update avx512 implementation
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- Resolved
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