The following test failed in the JDK18 CI:

compiler/onSpinWait/TestOnSpinWaitAArch64DefaultFlags.java

Here's a snippet from the log file:

----------System.err:(12/904)----------
java.lang.RuntimeException: OnSpinWaitInst with the expected value 'isb' not found.
at compiler.onSpinWait.TestOnSpinWaitAArch64DefaultFlags.checkFinalFlagsEqualTo(TestOnSpinWaitAArch64DefaultFlags.java:72)
at compiler.onSpinWait.TestOnSpinWaitAArch64DefaultFlags.main(TestOnSpinWaitAArch64DefaultFlags.java:90)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:577)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
at java.base/java.lang.Thread.run(Thread.java:833)

JavaTest Message: Test threw exception: java.lang.RuntimeException: OnSpinWaitInst with the expected value 'isb' not found.
JavaTest Message: shutting down test

STATUS:Failed.`main' threw exception: java.lang.RuntimeException: OnSpinWaitInst with the expected value 'isb' not found.
----------rerun:(35/8023)*----------