> By using the Class File API to dynamically generate a CompositePrinterParser, > and defining DateTimePrinterParser[] printerParsers as a specific field, C2 > can do TypeProfile optimization. > > Since the CompositePrinterParser is generated based on the pattern, we can > make the following optimizations: > > 1. For example, for the parse and print of > Month/DayOfMonth/Hour/Minute/Second with a fixed length of 2, do targeted > parse and print optimization. > > 2. Parse uses LocalDate/LocalTime/LocalDateTime/OffsetDateTime for > TemporalQuery to avoid the overhead of constructing DateTimeParseContext. > > These optimizations can significantly improve performance, with more than > 100% performance improvement in many scenarios.
Shaojin Wen has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 26 commits: - Merge remote-tracking branch 'upstream/master' into datetime_fmt_202502 # Conflicts: # src/java.base/share/classes/java/time/format/DateTimeFormatterBuilder.java - more use getInt & add more test - refactor test - more test - code style - code style - add instance test - add test and bug fix - speed up format via wrapper - use get & formatInt - ... and 16 more: https://git.openjdk.org/jdk/compare/24833403...c8528dd8 ------------- Changes: https://git.openjdk.org/jdk/pull/23384/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=23384&range=11 Stats: 2090 lines in 9 files changed: 1948 ins; 88 del; 54 mod Patch: https://git.openjdk.org/jdk/pull/23384.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/23384/head:pull/23384 PR: https://git.openjdk.org/jdk/pull/23384
