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Bug
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Resolution: Fixed
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P1
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9, 10, 11
| Issue | Fix Version | Assignee | Priority | Status | Resolution | Resolved In Build |
|---|---|---|---|---|---|---|
| JDK-8210172 | 12 | Vladimir Kozlov | P1 | Resolved | Fixed | b09 |
| JDK-8210081 | 11.0.2 | Vladimir Kozlov | P1 | Resolved | Fixed | b01 |
| JDK-8210073 | 11.0.1 | Vladimir Kozlov | P1 | Resolved | Fixed | b08 |
I am working on JDK-8209594 (short branches distance too big when avx512 is used) and I found more issues with it and I need time to find all cases.
Some instructions are totally wrong (copy-paste error) when register >=16 are used:
http://hg.openjdk.java.net/jdk/jdk11/file/f729ca27cf9a/src/hotspot/cpu/x86/macroAssembler_x86.cpp#l4680
http://hg.openjdk.java.net/jdk/jdk11/file/f729ca27cf9a/src/hotspot/cpu/x86/macroAssembler_x86.cpp#l4581
Also some vector predicated in .ad file are wrong for the same issue:
http://hg.openjdk.java.net/jdk/jdk11/file/f729ca27cf9a/src/hotspot/cpu/x86/x86.ad#l5647
I am currently trying to instrument code to emulate situation when only xmm16-31 are used, as we discussed before, to find incorrect cases and I need time for that.
At this later time I want to switch off avx512 in JDK 11.
Some instructions are totally wrong (copy-paste error) when register >=16 are used:
http://hg.openjdk.java.net/jdk/jdk11/file/f729ca27cf9a/src/hotspot/cpu/x86/macroAssembler_x86.cpp#l4680
http://hg.openjdk.java.net/jdk/jdk11/file/f729ca27cf9a/src/hotspot/cpu/x86/macroAssembler_x86.cpp#l4581
Also some vector predicated in .ad file are wrong for the same issue:
http://hg.openjdk.java.net/jdk/jdk11/file/f729ca27cf9a/src/hotspot/cpu/x86/x86.ad#l5647
I am currently trying to instrument code to emulate situation when only xmm16-31 are used, as we discussed before, to find incorrect cases and I need time for that.
At this later time I want to switch off avx512 in JDK 11.
- backported by
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JDK-8210073 Disable avx512 by default
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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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- Closed
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