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  1. JDK
  2. JDK-8267149

CPUInfo: Use enums to represent CPU features

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    • Icon: Enhancement Enhancement
    • Resolution: Unresolved
    • Icon: P4 P4
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    • hotspot

      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")) {
       

            Unassigned Unassigned
            vlivanov Vladimir Ivanov
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              Created:
              Updated: