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  1. JDK
  2. JDK-8237951

CTW: C2 compilation fails with "malformed control flow"

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    • Subcomponent:
    • Resolved In Build:
      b09

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        $ cd test/hotspot/jtreg/testlibrary/ctw
        $ make
        $ cd dist
        $ wget https://repo1.maven.org/maven2/com/liferay/com.liferay.wiki.service/2.0.8/com.liferay.wiki.service-2.0.8.jar
        $ JAVA_OPTIONS="-XX:+AbortVMOnCompilationFailure -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+ShenandoahVerifyOptoBarriers" ./ctw.sh com.liferay.wiki.service-2.0.8.jar

        # Internal Error (/home/shade/trunks/jdk-jdk/src/hotspot/share/compiler/compileBroker.cpp:2009), pid=18437, tid=18447
        # fatal error: Not compilable at tier 4: malformed control flow
        #
        # JRE version: OpenJDK Runtime Environment (15.0) (fastdebug build 15-internal+0-adhoc.shade.jdk-jdk)
        # Java VM: OpenJDK 64-Bit Server VM (fastdebug 15-internal+0-adhoc.shade.jdk-jdk, mixed mode, sharing, tiered, compressed oops, shenandoah gc, linux-amd64)
        # Problematic frame:
        # V [libjvm.so+0x882133] CompileBroker::post_compile(CompilerThread*, CompileTask*, bool, ciEnv*, int, char const*)+0x1b3

        It looks Shenandoah-specific, as I could not get it to fail with G1. (It requires additional -XX:MaxNodeLimit=240000 -XX:NodeLimitFudgeFactor=6000 to get past the node limits).

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                • Assignee:
                  roland Roland Westrelin
                  Reporter:
                  shade Aleksey Shipilev
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                    Updated:
                    Resolved: