JDK-8255400 : Shenandoah: C2 failures after JDK-8255000
- Type: Bug
- Component: hotspot
- Sub-Component: compiler
- Affected Version: 8-shenandoah,11,15,16
- Priority: P2
- Status: Resolved
- Resolution: Fixed
- OS: generic
- CPU: generic
- Submitted: 2020-10-26
- Updated: 2021-01-13
- Resolved: 2020-11-02
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| JDK 16 |
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16 b23Fixed  |
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Description
Summary is provisionary, adjust when finding more details. Many tests exhibit the following assert with Shenandoah: # Internal Error (/home/rkennke/src/openjdk/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp:1909), pid=358095, tid=358108 # Error: assert(controls.member(u->in(0))) failed See also attached hs_err and replay files. Reproduced by (for example): make run-test TEST=vmTestbase/nsk/jdi/ThreadReference/forceEarlyReturn/forceEarlyReturn006/TestDescription.java TEST_VM_OPTS="-XX:+UseShenandoahGC" Bisecting shows that this regression is caused by JDK-8255000.
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