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  1. JDK
  2. JDK-8267149

CPUInfo: Use enums to represent CPU features

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Details

    • Enhancement
    • Resolution: Unresolved
    • P4
    • tbd
    • 17
    • hotspot

    Description

      Replace strings with enums to represent CPU features in sun.hotspot.cpuinfo.CPUInfo.

      public static List<String> getFeatures()
      public static boolean hasFeature(String feature)

      It enables static and dynamic checks to ensure that JVM and tests agree on CPU features.

      test//hotspot/jtreg/compiler/intrinsics/bmi/TestBlsiL.java: if (!CPUInfo.hasFeature("bmi1")) {
      test//hotspot/jtreg/compiler/intrinsics/bmi/TestBzhiI2L.java: if (!CPUInfo.hasFeature("bmi2")) {
      test//hotspot/jtreg/compiler/intrinsics/bmi/TestLzcntI.java: if (!CPUInfo.hasFeature("lzcnt")) {
       

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          relates to

          Bug - A problem which impairs or prevents the functions of the product. JDK-8267117 sun/hotspot/whitebox/CPUInfoTest.java fails on Ice Lake

          • P2 - Crashes, loss of data, severe memory leak.
          • Resolved

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              Unassigned Unassigned
              vlivanov Vladimir Ivanov
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              Dates

                Created:
                Updated: