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  1. JDK
  2. JDK-8247832

[Graal] Many Javafuzzer tests failures with Graal, due to unexpected results, after last update JDK-8243380

    Details

    • Subcomponent:
    • Introduced In Build:
      b27
    • Introduced In Version:
      15
    • Resolved In Build:
      b30
    • Verification:
      Verified

      Backports

        Description

        Attached sample tests, reference output -

        $ ..../jdk15b27-1305/jdk-15/fastdebug/bin/javac *.java
        $ ..../jdk15b27-1305/jdk-15/fastdebug/bin/java -Xmx4G -Xcomp -Xbatch -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI -XX:+UseJVMCICompiler -Djvmci.Compiler=graal -XX:CompileOnly=Test -ea -esa -XX:CompilationMode=high-only-quick-internal Test > TestJDK15b27-1305-Graal.out
        $ diff rt_out_ref TestJDK15b27-1305-Graal.out
              10c10
              < byFld sFld Test.lArrFld = -21,-2179,86978320389476000
              ---
              > byFld sFld Test.lArrFld = -21,32635,86978320389476000
              17c17
              < byFld sFld Test.lArrFld = 108,-16341,86978320389476000
              ---
              > byFld sFld Test.lArrFld = 108,13863,86978320389476000
              24c24
              < byFld sFld Test.lArrFld = -19,21209,86978320389476000
              ---
              > byFld sFld Test.lArrFld = -19,28883,86978320389476000
              31c31
              < byFld sFld Test.lArrFld = 110,-12921,86978320389476000
              ---
              > byFld sFld Test.lArrFld = 110,15231,86978320389476000
              38c38
              < byFld sFld Test.lArrFld = -17,9781,86978320389476000
              ---
              > byFld sFld Test.lArrFld = -17,-28117,86978320389476000
              45c45
              < byFld sFld Test.lArrFld = 112,-11037,86978320389476000
              ---
              > byFld sFld Test.lArrFld = 112,-23337,86978320389476000
              52c52
              < byFld sFld Test.lArrFld = -15,19857,86978320389476000
              ---
              > byFld sFld Test.lArrFld = -15,15235,86978320389476000
              59c59
              < byFld sFld Test.lArrFld = 114,-20929,86978320389476000
              ---
              > byFld sFld Test.lArrFld = 114,25135,86978320389476000
              66c66
              < byFld sFld Test.lArrFld = -13,-4883,86978320389476000
              ---
              > byFld sFld Test.lArrFld = -13,5339,86978320389476000

        No similar failures with C1, C2
        $ ..../jdk15b27-1305/jdk-15/fastdebug/bin/java -Xmx1G -Xcomp -Xbatch -XX:-TieredCompilation -XX:CompileOnly=Test Test > TestJDK15b27-1305-C2.out
        $ diff rt_out_ref TestJDK15b27-1305-C2.out

        $ ..../jdk15b27-1305/jdk-15/fastdebug/bin/java -Xmx1G -Xcomp -Xbatch -XX:TieredStopAtLevel=2 -XX:CompileOnly=Test Test > TestJDK15b27-1305-C1P.out
        $ diff rt_out_ref TestJDK15b27-1305-C1P.out

        $ ..../jdk15b27-1305/jdk-15/fastdebug/bin/java -Xmx1G -Xcomp -Xbatch -XX:TieredStopAtLevel=1 -XX:CompileOnly=Test Test > TestJDK15b27-1305-C1.out
        $ diff rt_out_ref TestJDK15b27-1305-C1.out

        Issue started after recent Graal Update (JDK-8243380) in JDK 15-ea+27-1305.

          Attachments

          1. FuzzerUtils.java
            13 kB
          2. rt_out_ref
            3 kB
          3. Test.java
            6 kB

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                • Assignee:
                  roland Roland Westrelin
                  Reporter:
                  rraghavan Rahul Raghavan
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                  Dates

                  • Created:
                    Updated:
                    Resolved: