improve date toString performance, includes: java.util.Date.toString java.util.Date.toGMTString java.time.Instant.toString java.time.LocalDate.toString java.time.LocalDateTime.toString java.time.LocalTime.toString
------------- Commit messages: - improve date toString performance, includes: Changes: https://git.openjdk.org/jdk/pull/15658/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=15658&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8315999 Stats: 663 lines in 12 files changed: 574 ins; 7 del; 82 mod Patch: https://git.openjdk.org/jdk/pull/15658.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/15658/head:pull/15658 PR: https://git.openjdk.org/jdk/pull/15658
