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  1. JDK
  2. JDK-8282592

C2: assert(false) failed: graph should be schedulable

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    • b10
    • 19
    • b15

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      Description

        Assert in PhaseCFG::schedule_late

        To reproduce:
        Run TestOverunrolling.java with additional flag -XX:+StressReflectiveCode.

        With jtreg:
        path-to-jtreg/jtreg -va -s -jdk:path-to-jdk/jdk/ -javaoptions:"-XX:+StressReflectiveCode" test/hotspot/jtreg/compiler/loopopts/TestOverunrolling.java

        You can find hs_err file in Attachment.

        # To suppress the following error report, specify this argument
        # after -XX: or in .hotspotrc: SuppressErrorAt=/gcm.cpp:1423
        #
        # A fatal error has been detected by the Java Runtime Environment:
        #
        # Internal Error (/home/emanuel/Documents/closed-jdk/open/src/hotspot/share/opto/gcm.cpp:1423), pid=268648, tid=268661
        # assert(false) failed: graph should be schedulable
        #
        # JRE version: Java(TM) SE Runtime Environment (19.0) (slowdebug build 19-internal-2022-02-28-1116307.emanuel...)
        # Java VM: Java HotSpot(TM) 64-Bit Server VM (slowdebug 19-internal-2022-02-28-1116307.emanuel..., compiled mode, compressed oops, compressed class ptrs, parallel gc, linux-amd64)
        # Problematic frame:
        # V [libjvm.so+0xadfc8b] PhaseCFG::schedule_late(VectorSet&, Node_Stack&)+0x605
        #


        Current CompileTask:
        C2: 32296 3423 b compiler.loopopts.TestOverunrolling::test3 (89 bytes)

        Stack: [0x00007f3c5d0c6000,0x00007f3c5d1c7000], sp=0x00007f3c5d1c1960, free space=1006k
        Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
        V [libjvm.so+0xadfc8b] PhaseCFG::schedule_late(VectorSet&, Node_Stack&)+0x605
        V [libjvm.so+0xae00cd] PhaseCFG::global_code_motion()+0x1f3
        V [libjvm.so+0xae08da] PhaseCFG::do_global_code_motion()+0x60
        V [libjvm.so+0x85c3ea] Compile::Code_Gen()+0x1c6
        V [libjvm.so+0x85324d] Compile::Compile(ciEnv*, ciMethod*, int, Options, DirectiveSet*)+0x1567
        V [libjvm.so+0x748299] C2Compiler::compile_method(ciEnv*, ciMethod*, int, bool, DirectiveSet*)+0x185
        V [libjvm.so+0x87088d] CompileBroker::invoke_compiler_on_method(CompileTask*)+0x899
        V [libjvm.so+0x86f4e7] CompileBroker::compiler_thread_loop()+0x3df
        V [libjvm.so+0x88fc3b] CompilerThread::thread_entry(JavaThread*, JavaThread*)+0x69
        V [libjvm.so+0x124901f] JavaThread::thread_main_inner()+0x15d
        V [libjvm.so+0x1248ebf] JavaThread::run()+0x167
        V [libjvm.so+0x12467d0] Thread::call_run()+0x180
        V [libjvm.so+0x105262b] thread_native_entry(Thread*)+0x18f

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                roland Roland Westrelin
                epeter Emanuel Peter
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                  Created:
                  Updated:
                  Resolved: