Spotted in the JDK21 CI:

compiler/c2/irTests/TestAutoVecCountingDownLoop.java
compiler/loopopts/superword/ProdRed_Float.java

Here's a log file snippet from TestAutoVecCountingDownLoop.java:

----------System.err:(22/1709)----------
compiler.lib.ir_framework.shared.TestFrameworkException: Internal Test Framework exception - please file a bug:
Did not find IR encoding
at compiler.lib.ir_framework.TestFramework.check(TestFramework.java:770)
at compiler.lib.ir_framework.driver.irmatching.parser.IREncodingParser.getIREncodingLines(IREncodingParser.java:106)
at compiler.lib.ir_framework.driver.irmatching.parser.IREncodingParser.parseIREncoding(IREncodingParser.java:87)
at compiler.lib.ir_framework.driver.irmatching.parser.IREncodingParser.createTestMethodMap(IREncodingParser.java:78)
at compiler.lib.ir_framework.driver.irmatching.parser.IREncodingParser.parse(IREncodingParser.java:67)
at compiler.lib.ir_framework.driver.irmatching.parser.TestClassParser.parse(TestClassParser.java:56)
at compiler.lib.ir_framework.TestFramework.runTestVM(TestFramework.java:751)
at compiler.lib.ir_framework.TestFramework.start(TestFramework.java:719)
at compiler.lib.ir_framework.TestFramework.start(TestFramework.java:339)
at compiler.lib.ir_framework.TestFramework.run(TestFramework.java:223)
at compiler.lib.ir_framework.TestFramework.run(TestFramework.java:212)
at compiler.c2.irTests.TestAutoVecCountingDownLoop.main(TestAutoVecCountingDownLoop.java:44)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
at java.base/java.lang.reflect.Method.invoke(Method.java:580)
at com.sun.javatest.regtest.agent.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:333)
at java.base/java.lang.Thread.run(Thread.java:1583)

JavaTest Message: Test threw exception: compiler.lib.ir_framework.shared.TestFrameworkException
JavaTest Message: shutting down test

result: Failed. Execution failed: `main' threw exception: compiler.lib.ir_framework.shared.TestFrameworkException: Internal Test Framework exception - please file a bug: Did not find IR encoding


Here's a log file snippet from ProdRed_Float.java:

----------System.err:(43/2825)----------
The following scenarios have failed: #5

compiler.lib.ir_framework.shared.TestFrameworkException: Internal Test Framework exception - please file a bug:
Did not find IR encoding
at compiler.lib.ir_framework.TestFramework.check(TestFramework.java:770)
at compiler.lib.ir_framework.driver.irmatching.parser.IREncodingParser.getIREncodingLines(IREncodingParser.java:106)
at compiler.lib.ir_framework.driver.irmatching.parser.IREncodingParser.parseIREncoding(IREncodingParser.java:87)
at compiler.lib.ir_framework.driver.irmatching.parser.IREncodingParser.createTestMethodMap(IREncodingParser.java:78)
at compiler.lib.ir_framework.driver.irmatching.parser.IREncodingParser.parse(IREncodingParser.java:67)
at compiler.lib.ir_framework.driver.irmatching.parser.TestClassParser.parse(TestClassParser.java:56)
at compiler.lib.ir_framework.TestFramework.runTestVM(TestFramework.java:751)
at compiler.lib.ir_framework.TestFramework.start(TestFramework.java:719)
at compiler.lib.ir_framework.TestFramework.startWithScenarios(TestFramework.java:616)
at compiler.lib.ir_framework.TestFramework.start(TestFramework.java:349)
at compiler.loopopts.superword.ProdRed_Float.main(ProdRed_Float.java:52)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
at java.base/java.lang.reflect.Method.invoke(Method.java:580)
at com.sun.javatest.regtest.agent.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:333)
at java.base/java.lang.Thread.run(Thread.java:1583)


  #############################################################
   - 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.shared.TestRunException: The following scenarios have failed: #5. Please check stderr for more information.
at compiler.lib.ir_framework.TestFramework.reportScenarioFailures(TestFramework.java:665)
at compiler.lib.ir_framework.TestFramework.startWithScenarios(TestFramework.java:625)
at compiler.lib.ir_framework.TestFramework.start(TestFramework.java:349)
at compiler.loopopts.superword.ProdRed_Float.main(ProdRed_Float.java:52)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
at java.base/java.lang.reflect.Method.invoke(Method.java:580)
at com.sun.javatest.regtest.agent.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:333)
at java.base/java.lang.Thread.run(Thread.java:1583)

JavaTest Message: Test threw exception: compiler.lib.ir_framework.shared.TestRunException
JavaTest Message: shutting down test

result: Failed. Execution failed: `main' threw exception: compiler.lib.ir_framework.shared.TestRunException: The following scenarios have failed: #5. Please check stderr for more information.