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  1. JDK
  2. JDK-8217675 (str) optimize StringBuilder.append(CharSequence, start, end)
  3. JDK-8224986

(str) optimize StringBuilder.append(CharSequence, int, int) for String arguments

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    • b24

    Backports

      Description

        By specializing for String arguments so that they can use System.arraycopy directly when appropriate, provides a small speed-up in microbenchmarks.

        An intrinsic for append(String, int, int) might still be outperforming this, but it'll be a non-trivial task to implement. The parent RFE is left open for such an investigation.

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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-8225878 (str) optimize StringBuilder.append(CharSequence, int, int) for String arguments

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

            Enhancement - null JDK-8254082 AbstractStringBuilder.insert(int dstOffset, CharSequence s, int start, int end) is missing fast-path for String

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

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                redestad Claes Redestad
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                  Updated:
                  Resolved: