[IR Framework] Internal framework exception: Did not find IR encoding

Test: compiler/c2/irTests/TestUnsignedComparison.java

----------System.err:(21/1647)----------
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:718)
at compiler.lib.ir_framework.driver.irmatching.parser.IREncodingParser.getIREncodingLines(IREncodingParser.java:101)
at compiler.lib.ir_framework.driver.irmatching.parser.IREncodingParser.parseIREncoding(IREncodingParser.java:82)
at compiler.lib.ir_framework.driver.irmatching.parser.IREncodingParser.createCompilationsMap(IREncodingParser.java:73)
at compiler.lib.ir_framework.driver.irmatching.parser.IREncodingParser.parseIRMethods(IREncodingParser.java:63)
at compiler.lib.ir_framework.driver.irmatching.parser.IRMethodParser.parse(IRMethodParser.java:51)
at compiler.lib.ir_framework.driver.irmatching.IRMatcher.<init>(IRMatcher.java:41)
at compiler.lib.ir_framework.TestFramework.runTestVM(TestFramework.java:702)
at compiler.lib.ir_framework.TestFramework.start(TestFramework.java:671)
at compiler.lib.ir_framework.TestFramework.start(TestFramework.java:324)
at compiler.c2.irTests.TestUnsignedComparison.main(TestUnsignedComparison.java:83)
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.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:312)
at java.base/java.lang.Thread.run(Thread.java:1585)