The following test failed in the JDK20 CI:

compiler/vectorapi/VectorFPtoIntCastTest.java

Used JTreg javaoptions: -XX:+CreateCoredumpOnCrash -ea -esa -XX:CompileThreshold=100 -XX:+UnlockExperimentalVMOptions -server -XX:-TieredCompilation

Here's a snippet from the log file:

One or more @IR rules failed:

Failed IR Rules (8) of Methods (8)
----------------------------------
1) Method "public void compiler.vectorapi.VectorFPtoIntCastTest.double2byte()" - [Failed IR rules: 1]:
   * @IR rule 1: "@compiler.lib.ir_framework.IR(applyIf={}, failOn={}, applyIfAnd={}, applyIfOr={}, counts={"D2X", ">= 1"}, applyIfNot={})"
     - counts: Graph contains wrong number of nodes:
       * Regex 1: D2X
         - Failed comparison: [found] 0 >= 1 [given]
         - No nodes matched!

2) Method "public void compiler.vectorapi.VectorFPtoIntCastTest.double2int()" - [Failed IR rules: 1]:
   * @IR rule 1: "@compiler.lib.ir_framework.IR(applyIf={}, failOn={}, applyIfAnd={}, applyIfOr={}, counts={"D2X", ">= 1"}, applyIfNot={})"
     - counts: Graph contains wrong number of nodes:
       * Regex 1: D2X
         - Failed comparison: [found] 0 >= 1 [given]
         - No nodes matched!

3) Method "public void compiler.vectorapi.VectorFPtoIntCastTest.double2long()" - [Failed IR rules: 1]:
   * @IR rule 1: "@compiler.lib.ir_framework.IR(applyIf={}, failOn={}, applyIfAnd={}, applyIfOr={}, counts={"D2X", ">= 1"}, applyIfNot={})"
     - counts: Graph contains wrong number of nodes:
       * Regex 1: D2X
         - Failed comparison: [found] 0 >= 1 [given]
         - No nodes matched!

4) Method "public void compiler.vectorapi.VectorFPtoIntCastTest.double2short()" - [Failed IR rules: 1]:
   * @IR rule 1: "@compiler.lib.ir_framework.IR(applyIf={}, failOn={}, applyIfAnd={}, applyIfOr={}, counts={"D2X", ">= 1"}, applyIfNot={})"
     - counts: Graph contains wrong number of nodes:
       * Regex 1: D2X
         - Failed comparison: [found] 0 >= 1 [given]
         - No nodes matched!

5) Method "public void compiler.vectorapi.VectorFPtoIntCastTest.float2byte()" - [Failed IR rules: 1]:
   * @IR rule 1: "@compiler.lib.ir_framework.IR(applyIf={}, failOn={}, applyIfAnd={}, applyIfOr={}, counts={"F2X", ">= 1"}, applyIfNot={})"
     - counts: Graph contains wrong number of nodes:
       * Regex 1: F2X
         - Failed comparison: [found] 0 >= 1 [given]
         - No nodes matched!

6) Method "public void compiler.vectorapi.VectorFPtoIntCastTest.float2int()" - [Failed IR rules: 1]:
   * @IR rule 1: "@compiler.lib.ir_framework.IR(applyIf={}, failOn={}, applyIfAnd={}, applyIfOr={}, counts={"F2X", ">= 1"}, applyIfNot={})"
     - counts: Graph contains wrong number of nodes:
       * Regex 1: F2X
         - Failed comparison: [found] 0 >= 1 [given]
         - No nodes matched!

7) Method "public void compiler.vectorapi.VectorFPtoIntCastTest.float2long()" - [Failed IR rules: 1]:
   * @IR rule 1: "@compiler.lib.ir_framework.IR(applyIf={}, failOn={}, applyIfAnd={}, applyIfOr={}, counts={"F2X", ">= 1"}, applyIfNot={})"
     - counts: Graph contains wrong number of nodes:
       * Regex 1: F2X
         - Failed comparison: [found] 0 >= 1 [given]
         - No nodes matched!

8) Method "public void compiler.vectorapi.VectorFPtoIntCastTest.float2short()" - [Failed IR rules: 1]:
   * @IR rule 1: "@compiler.lib.ir_framework.IR(applyIf={}, failOn={}, applyIfAnd={}, applyIfOr={}, counts={"F2X", ">= 1"}, applyIfNot={})"
     - counts: Graph contains wrong number of nodes:
       * Regex 1: F2X
         - Failed comparison: [found] 0 >= 1 [given]
         - No nodes matched!

>>> Check stdout for compilation output of the failed methods


  #############################################################
   - To only run the failed tests use -DTest, -DExclude,
     and/or -DScenarios.
   - To also get the standard output of the test VM run with
     -DReportStdout=true or for even more fine-grained logging
     use -DVerbose=true.
  #############################################################


compiler.lib.ir_framework.driver.irmatching.IRViolationException: There were one or multiple IR rule failures. Please check stderr for more information.
at compiler.lib.ir_framework.driver.irmatching.IRMatcher.throwIfNoSafepointWhilePrinting(IRMatcher.java:91)
at compiler.lib.ir_framework.driver.irmatching.IRMatcher.reportFailures(IRMatcher.java:82)
at compiler.lib.ir_framework.driver.irmatching.IRMatcher.applyIRRules(IRMatcher.java:54)
at compiler.lib.ir_framework.driver.irmatching.IRMatcher.<init>(IRMatcher.java:43)
at compiler.lib.ir_framework.TestFramework.runTestVM(TestFramework.java:729)
at compiler.lib.ir_framework.TestFramework.start(TestFramework.java:698)
at compiler.lib.ir_framework.TestFramework.start(TestFramework.java:329)
at compiler.lib.ir_framework.TestFramework.runWithFlags(TestFramework.java:237)
at compiler.vectorapi.VectorFPtoIntCastTest.main(VectorFPtoIntCastTest.java:64)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:578)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
at java.base/java.lang.Thread.run(Thread.java:1596)

JavaTest Message: Test threw exception: compiler.lib.ir_framework.driver.irmatching.IRViolationException: There were one or multiple IR rule failures. Please check stderr for more information.
JavaTest Message: shutting down test

STATUS:Failed.`main' threw exception: compiler.lib.ir_framework.driver.irmatching.IRViolationException: There were one or multiple IR rule failures. Please check stderr for more information.
----------rerun:(45/6579)*----------