On Fri, 2 May 2025 03:53:23 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 with a new target base due to a > merge or a rebase. The pull request now contains 39 commits: > > - Merge remote-tracking branch 'upstream/master' into > optim_parse_int_long_202501 > > # Conflicts: > # src/java.base/share/classes/java/lang/Integer.java > # src/java.base/share/classes/java/lang/Long.java > - Merge remote-tracking branch 'upstream/master' into > optim_parse_int_long_202501 > - remove ForceInline > - fix comments > - fix comments > - Update src/java.base/share/classes/jdk/internal/util/DecimalDigits.java > > Co-authored-by: Raffaello Giulietti <raffaello.giulie...@oracle.com> > - copyright > - fix JdbExprTest > - Update src/java.base/share/classes/java/lang/Long.java > > Co-authored-by: Raffaello Giulietti <raffaello.giulie...@oracle.com> > - Update src/java.base/share/classes/java/lang/Integer.java > > Co-authored-by: Raffaello Giulietti <raffaello.giulie...@oracle.com> > - ... and 29 more: https://git.openjdk.org/jdk/compare/bd7c7789...047e1709 keep alive ------------- PR Comment: https://git.openjdk.org/jdk/pull/22919#issuecomment-2957461147
