JDK-8231550 : C2: ShouldNotReachHere() in verify_strip_mined_scheduling
- Type: Bug
- Component: hotspot
- Sub-Component: compiler
- Affected Version: 11,11-shenandoah,13,14
- Priority: P2
- Status: Closed
- Resolution: Fixed
- Submitted: 2019-09-26
- Updated: 2022-06-27
- Resolved: 2019-10-07
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Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.
To download the current JDK release, click here.
| JDK 11 | JDK 13 | JDK 14 |
|---|---|---|
| 11.0.8-oracleFixed | 13.0.4Fixed | 14 b18Fixed  |
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Description
(synopsis is provisional, until the root cause is found) Note: this happens even after JDK-8229483, which does not make it duplicate of that issue. Also, there is similar thing seen in valhalla, JDK-8230798. Found with fuzzing. Reliably reproduces with the attached testcase (0021.tar.gz). Also seen to happen in 11. # Internal Error (/home/shade/trunks/jdk-jdk/src/hotspot/share/opto/loopnode.cpp:4269), pid=2722, tid=2733 # Error: ShouldNotReachHere() # # JRE version: OpenJDK Runtime Environment (14.0) (fastdebug build 14-internal+0-adhoc.shade.jdk-jdk) # Java VM: OpenJDK 64-Bit Server VM (fastdebug 14-internal+0-adhoc.shade.jdk-jdk, mixed mode, sharing, tiered, compressed oops, g1 gc, linux-amd64) # Problematic frame: # V [libjvm.so+0x120657c] PhaseIdealLoop::verify_strip_mined_scheduling(Node*, Node*)+0x3cc --------------- T H R E A D --------------- Current thread (0x00007fdf28592000): JavaThread "C2 CompilerThread0" daemon [_thread_in_native, id=2733, stack(0x00007fdeb856a000,0x00007fdeb866b000)] Current CompileTask: C2: 785 79 ! 4 Test::vMeth1 (203 bytes) Stack: [0x00007fdeb856a000,0x00007fdeb866b000], sp=0x00007fdeb8665200, free space=1004k Native frames: (J=compiled Java code, A=aot compiled Java code, j=interpreted, Vv=VM code, C=native code) V [libjvm.so+0x120657c] PhaseIdealLoop::verify_strip_mined_scheduling(Node*, Node*)+0x3cc V [libjvm.so+0x12099e2] PhaseIdealLoop::build_loop_late_post_work(Node*, bool)+0x362 V [libjvm.so+0x1209f60] PhaseIdealLoop::build_loop_late(VectorSet&, Node_List&, Node_Stack&)+0xf0 V [libjvm.so+0x120dc3a] PhaseIdealLoop::build_and_optimize(LoopOptsMode)+0x74a V [libjvm.so+0x9c94d1] PhaseIdealLoop::optimize(PhaseIterGVN&, LoopOptsMode)+0x2c1 V [libjvm.so+0x9c6388] Compile::Optimize()+0x9d8 V [libjvm.so+0x9c7bf5] Compile::Compile(ciEnv*, C2Compiler*, ciMethod*, int, bool, bool, bool, DirectiveSet*)+0x1205 V [libjvm.so+0x812a4d] C2Compiler::compile_method(ciEnv*, ciMethod*, int, DirectiveSet*)+0x10d V [libjvm.so+0x9d3d97] CompileBroker::invoke_compiler_on_method(CompileTask*)+0x397 V [libjvm.so+0x9d4f18] CompileBroker::compiler_thread_loop()+0x4f8 V [libjvm.so+0x1833e6a] JavaThread::thread_main_inner()+0x26a V [libjvm.so+0x183bc3b] JavaThread::run()+0x25b V [libjvm.so+0x18393d6] Thread::call_run()+0xf6 V [libjvm.so+0x143776e] thread_native_entry(Thread*)+0x10e
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