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  1. JDK
  2. JDK-8254814

[Vector API] Fix an AVX512 crash after JDK-8223347

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    • Subcomponent:
    • Resolved In Build:
      b21

      Description

      # Reproduce
      Run jdk/incubator/vector/Short64VectorTests.java on AVX512 machines

      # Symptom
      ```
      #
      # A fatal error has been detected by the Java Runtime Environment:
      #
      # Internal Error (/home/jdk/src/hotspot/cpu/x86/assembler_x86.cpp:8714), pid=96989, tid=97022
      # assert(((dst_enc < 16 && nds_enc < 16 && src_enc < 16) || (!attributes->is_legacy_mode()))) failed: XMM register should be 0-15
      #
      # JRE version: OpenJDK Runtime Environment (16.0+4) (fastdebug build 16-internal+4-adhoc..jdk)
      # Java VM: OpenJDK 64-Bit Server VM (fastdebug 16-internal+4-adhoc..jdk, mixed mode, sharing, tiered, compressed oops, g1 gc, linux-amd64)
      # Problematic frame:
      # V [libjvm.so+0x63259f] Assembler::vex_prefix_and_encode(int, int, int, Assembler::VexSimdPrefix, Assembler::VexOpcode, InstructionAttr*) [clone .constprop.1]+0x21f
      #
      ```

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              Assignee:
              jiefu Jie Fu
              Reporter:
              jiefu Jie Fu
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                Updated:
                Resolved: