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  1. JDK
  2. JDK-8203352

Improve java implementation of Integer/Long.numberOfLeadingZeros

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    • Enhancement
    • Resolution: Fixed
    • P4
    • 11
    • None
    • core-libs
    • b15

    Backports

      Description

        During warmup and in environments with no corresponding intrinsics, the current implementations of Integer/Long.numberOfLeadingZeros doesn't get optimally compiled. Implementations avoiding right-shift operations allows C1 and C2 to produce better code.

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            backported by

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8204018 Improve java implementation of Integer/Long.numberOfLeadingZeros

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved

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                redestad Claes Redestad
                redestad Claes Redestad
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                  Created:
                  Updated:
                  Resolved: