Speed up latin1 case folding

Eirik Bjørsnøs eirbjo at gmail.com
Fri Feb 17 17:38:46 UTC 2023


Hi,

The following PR suggests we can speed up Character.toUpperCase and
Character.toLowerCase for latin1 code points by applying 'the oldest ASCII
trick in the book':

https://github.com/openjdk/jdk/pull/12623

Thanks,
Eirik.
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