RFR: 8359424: Eliminate table lookup in Integer/Long toHexString [v2]

[Shaojin Wen]

On Sun, 15 Jun 2025 05:53:26 GMT, Shaojin Wen <swen at openjdk.org> wrote:

>> In PR #22928, UUID introduced long-based vectorized hexadecimal to string conversion, which can also be used in Integer::toHexString and Long::toHexString to eliminate table lookups. The benefit of eliminating table lookups is that the performance is better when cache misses occur.
>
> Shaojin Wen has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Update src/java.base/share/classes/java/util/UUID.java
>   
>   Co-authored-by: ExE Boss <3889017+ExE-Boss at users.noreply.github.com>

keep alive

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PR Comment: https://git.openjdk.org/jdk/pull/22942#issuecomment-3067947337