C2 fails with unexpected node in SuperWord truncation: CmpLTMask, RoundF

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        # Internal Error (/home/roland/jdk-jdk/src/hotspot/share/opto/superword.cpp:2606), pid=4102033, tid=4102052
        # assert(false) failed: Unexpected node in SuperWord truncation: CmpLTMask
        #
        # JRE version: OpenJDK Runtime Environment (26.0) (fastdebug build 26-internal-adhoc.roland.jdk-jdk)
        # Java VM: OpenJDK 64-Bit Server VM (fastdebug 26-internal-adhoc.roland.jdk-jdk, mixed mode, sharing, compressed oops, compressed class ptrs, g1 gc, linux-amd64)
        # Problematic frame:
        # V [libjvm.so+0x1993a5c] VLoopTypes::compute_vector_element_type()+0xc9c

        I see this when running CTW with:
        https://repo1.maven.org/maven2/info/freelibrary/freelib-marc4j/2.6.8/freelib-marc4j-2.6.8.jar

        I also see:
        # Internal Error (/home/roland/jdk-jdk/src/hotspot/share/opto/superword.cpp:2606), pid=4101992, tid=4102018
        # assert(false) failed: Unexpected node in SuperWord truncation: RoundF
        #
        # JRE version: OpenJDK Runtime Environment (26.0) (fastdebug build 26-internal-adhoc.roland.jdk-jdk)
        # Java VM: OpenJDK 64-Bit Server VM (fastdebug 26-internal-adhoc.roland.jdk-jdk, mixed mode, sharing, compressed oops, compressed class ptrs, g1 gc, linux-amd64)
        # Problematic frame:
        # V [libjvm.so+0x1993a5c] VLoopTypes::compute_vector_element_type()+0xc9c

        with:
        https://repo1.maven.org/maven2/com/actelion/research/openchemlib/2018.9.0/openchemlib-2018.9.0.jar

              Assignee:
              Jasmine Karthikeyan
              Reporter:
              Roland Westrelin
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                Created:
                Updated:
                Resolved: