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  1. JDK
  2. JDK-8362979

C2: "Unexpected node in SuperWord truncation: CmpLTMask" failure

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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

            jkarthikeyan Jasmine Karthikeyan
            roland Roland Westrelin
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              Created:
              Updated: