On Tue, 28 Jan 2025 01:24:43 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. > > Shaojin Wen has updated the pull request incrementally with one additional > commit since the last revision: > > error message A nice enhancement would be to allow `String.parseInt(CharSequence,int,int,int)` to also use this code when the CharSequence actually was a String. Could benefit, for example, `java.util.Formatter` ------------- PR Comment: https://git.openjdk.org/jdk/pull/22919#issuecomment-2620464925
