The following test failed in the JDK20 CI:

compiler/vectorapi/VectorFPtoIntCastTest.java

Here's a snippet from the log file:

----------System.err:(96/8935)*----------
WARNING: Using incubator modules: jdk.incubator.vector

Command Line:
c:\\ade\\mesos\\work_dir\\jib-master\\install\\jdk-20+3-73\\windows-x64-debug.jdk\\jdk-20\\fastdebug\\bin\\java.exe -DReproduce=true -cp C:\\sb\\prod\\1655460009\\testoutput\\test-support\\jtreg_open_test_hotspot_jtreg_hotspot_not_fast_compiler\\classes\\1\\compiler\\vectorapi\\VectorFPtoIntCastTest.d;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jdk-20+3-73\\src.full\\open\\test\\hotspot\\jtreg\\compiler\\vectorapi;C:\\sb\\prod\\1655460009\\testoutput\\test-support\\jtreg_open_test_hotspot_jtreg_hotspot_not_fast_compiler\\classes\\1\\test\\lib;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jdk-20+3-73\\src.full\\open\\test\\lib;C:\\sb\\prod\\1655460009\\testoutput\\test-support\\jtreg_open_test_hotspot_jtreg_hotspot_not_fast_compiler\\classes\\1;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jdk-20+3-73\\src.full\\open\\test\\hotspot\\jtreg;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6.1\\1\\bundles\\jtreg-6.1+1.zip\\jtreg\\lib\\javatest.jar;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6.1\\1\\bundles\\jtreg-6.1+1.zip\\jtreg\\lib\\jtreg.jar -Djava.library.path=c:\\ade\\mesos\\work_dir\\jib-master\\install\\jdk-20+3-73\\windows-x64-debug.test\\hotspot\\jtreg\\native -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:MaxRAMPercentage=4.16667 -Djava.io.tmpdir=c:\\sb\\prod\\1655460009\\testoutput\\test-support\\jtreg_open_test_hotspot_jtreg_hotspot_not_fast_compiler\\tmp -XX:+CreateCoredumpOnCrash -ea -esa -XX:+UnlockExperimentalVMOptions -server -XX:-TieredCompilation -Dir.framework.server.port=57935 --add-modules=jdk.incubator.vector -XX:+PrintCompilation -XX:+UnlockDiagnosticVMOptions -XX:+LogCompilation -XX:CompileCommand=log,compiler.vectorapi.VectorFPtoIntCastTest::* -XX:CompileCommand=option,compiler.vectorapi.VectorFPtoIntCastTest::*,bool,PrintIdeal,true -XX:CompileCommand=option,compiler.vectorapi.VectorFPtoIntCastTest::*,bool,PrintOptoAssembly,true -XX:-OmitStackTraceInFastThrow -DShouldDoIRVerification=true -XX:-BackgroundCompilation -XX:CompileCommand=quiet compiler.lib.ir_framework.test.TestVM compiler.vectorapi.VectorFPtoIntCastTest

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(applyIfCPUFeatureAnd={}, applyIfCPUFeatureOr={}, applyIf={}, applyIfCPUFeature={}, counts={"(\\\\d+(\\\\s){2}(VectorCastD2X.*)+(\\\\s){2}===.*)", "> 0"}, failOn={}, applyIfAnd={}, applyIfOr={}, applyIfNot={})"
     - counts: Graph contains wrong number of nodes:
       * Regex 1: (\\d+(\\s){2}(VectorCastD2X.*)+(\\s){2}===.*)
         - Failed comparison: [found] 0 > 0 [given]
         - No nodes matched!

2) Method "public void compiler.vectorapi.VectorFPtoIntCastTest.double2int()" - [Failed IR rules: 1]:
   * @IR rule 1: "@compiler.lib.ir_framework.IR(applyIfCPUFeatureAnd={}, applyIfCPUFeatureOr={}, applyIf={}, applyIfCPUFeature={}, counts={"(\\\\d+(\\\\s){2}(VectorCastD2X.*)+(\\\\s){2}===.*)", "> 0"}, failOn={}, applyIfAnd={}, applyIfOr={}, applyIfNot={})"
     - counts: Graph contains wrong number of nodes:
       * Regex 1: (\\d+(\\s){2}(VectorCastD2X.*)+(\\s){2}===.*)
         - Failed comparison: [found] 0 > 0 [given]
         - No nodes matched!

3) Method "public void compiler.vectorapi.VectorFPtoIntCastTest.double2long()" - [Failed IR rules: 1]:
   * @IR rule 1: "@compiler.lib.ir_framework.IR(applyIfCPUFeatureAnd={}, applyIfCPUFeatureOr={}, applyIf={}, applyIfCPUFeature={}, counts={"(\\\\d+(\\\\s){2}(VectorCastD2X.*)+(\\\\s){2}===.*)", "> 0"}, failOn={}, applyIfAnd={}, applyIfOr={}, applyIfNot={})"
     - counts: Graph contains wrong number of nodes:
       * Regex 1: (\\d+(\\s){2}(VectorCastD2X.*)+(\\s){2}===.*)
         - Failed comparison: [found] 0 > 0 [given]
         - No nodes matched!

4) Method "public void compiler.vectorapi.VectorFPtoIntCastTest.double2short()" - [Failed IR rules: 1]:
   * @IR rule 1: "@compiler.lib.ir_framework.IR(applyIfCPUFeatureAnd={}, applyIfCPUFeatureOr={}, applyIf={}, applyIfCPUFeature={}, counts={"(\\\\d+(\\\\s){2}(VectorCastD2X.*)+(\\\\s){2}===.*)", "> 0"}, failOn={}, applyIfAnd={}, applyIfOr={}, applyIfNot={})"
     - counts: Graph contains wrong number of nodes:
       * Regex 1: (\\d+(\\s){2}(VectorCastD2X.*)+(\\s){2}===.*)
         - Failed comparison: [found] 0 > 0 [given]
         - No nodes matched!

5) Method "public void compiler.vectorapi.VectorFPtoIntCastTest.float2byte()" - [Failed IR rules: 1]:
   * @IR rule 1: "@compiler.lib.ir_framework.IR(applyIfCPUFeatureAnd={}, applyIfCPUFeatureOr={}, applyIf={}, applyIfCPUFeature={}, counts={"(\\\\d+(\\\\s){2}(VectorCastF2X.*)+(\\\\s){2}===.*)", "> 0"}, failOn={}, applyIfAnd={}, applyIfOr={}, applyIfNot={})"
     - counts: Graph contains wrong number of nodes:
       * Regex 1: (\\d+(\\s){2}(VectorCastF2X.*)+(\\s){2}===.*)
         - Failed comparison: [found] 0 > 0 [given]
         - No nodes matched!

6) Method "public void compiler.vectorapi.VectorFPtoIntCastTest.float2int()" - [Failed IR rules: 1]:
   * @IR rule 1: "@compiler.lib.ir_framework.IR(applyIfCPUFeatureAnd={}, applyIfCPUFeatureOr={}, applyIf={}, applyIfCPUFeature={}, counts={"(\\\\d+(\\\\s){2}(VectorCastF2X.*)+(\\\\s){2}===.*)", "> 0"}, failOn={}, applyIfAnd={}, applyIfOr={}, applyIfNot={})"
     - counts: Graph contains wrong number of nodes:
       * Regex 1: (\\d+(\\s){2}(VectorCastF2X.*)+(\\s){2}===.*)
         - Failed comparison: [found] 0 > 0 [given]
         - No nodes matched!

7) Method "public void compiler.vectorapi.VectorFPtoIntCastTest.float2long()" - [Failed IR rules: 1]:
   * @IR rule 1: "@compiler.lib.ir_framework.IR(applyIfCPUFeatureAnd={}, applyIfCPUFeatureOr={}, applyIf={}, applyIfCPUFeature={}, counts={"(\\\\d+(\\\\s){2}(VectorCastF2X.*)+(\\\\s){2}===.*)", "> 0"}, failOn={}, applyIfAnd={}, applyIfOr={}, applyIfNot={})"
     - counts: Graph contains wrong number of nodes:
       * Regex 1: (\\d+(\\s){2}(VectorCastF2X.*)+(\\s){2}===.*)
         - Failed comparison: [found] 0 > 0 [given]
         - No nodes matched!

8) Method "public void compiler.vectorapi.VectorFPtoIntCastTest.float2short()" - [Failed IR rules: 1]:
   * @IR rule 1: "@compiler.lib.ir_framework.IR(applyIfCPUFeatureAnd={}, applyIfCPUFeatureOr={}, applyIf={}, applyIfCPUFeature={}, counts={"(\\\\d+(\\\\s){2}(VectorCastF2X.*)+(\\\\s){2}===.*)", "> 0"}, failOn={}, applyIfAnd={}, applyIfOr={}, applyIfNot={})"
     - counts: Graph contains wrong number of nodes:
       * Regex 1: (\\d+(\\s){2}(VectorCastF2X.*)+(\\s){2}===.*)
         - Failed comparison: [found] 0 > 0 [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)*----------

This failure occurred in jdk-20+3-73-tier3 and the following fix:

JDK-8288281 compiler/vectorapi/VectorFPtoIntCastTest.java failed with "IRViolationException: There were one or multiple IR rule failures."

was integrated in jdk-20+3-72.