The following code should be uncommented out in verifier.cpp when JDK-8187320 is fixed.

verifier.cpp, ClassVerifier::verify_method()

  // Verify value type bytecodes if enabled and class file version supports them.
  // Commented check out for now until class file version 54.1 is generated.
  bool vbytecodes_allowed = (EnableMVT || EnableValhalla);
                             //_klass->major_version() >= Verifier::VALUETYPE_MAJOR_VERSION &&
                             //_klass->minor_version() >= Verifier::VALUETYPE_MINOR_VERSION);