On Sat, 4 Jan 2025 10:24:15 GMT, Shaojin Wen <s...@openjdk.org> wrote:
> This is an optimization for decimal Integer.parseInt and Long.parseLong, > which improves performance by about 10%. The optimization includes: > 1. Improve performance by parsing 2 numbers at a time, which has performance > improvements for numbers with length >= 3. > 2. It uses charAt(0) for the first number. Assuming that the optimization can > eliminate boundary checks, this will be more friendly to parsing numbers with > length 1. > 3. It removes the reliance on the Character.digit method and eliminates the > reliance on the CharacterDataLatin1#DIGITS cache array, which avoids > performance degradation caused by cache misses. This pull request has been closed without being integrated. ------------- PR: https://git.openjdk.org/jdk/pull/22919
