> 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 incrementally with one additional commit since the last revision: add test and bug fix ------------- Changes: - all: https://git.openjdk.org/jdk/pull/23384/files - new: https://git.openjdk.org/jdk/pull/23384/files/3b228eeb..e5d3f83b Webrevs: - full: https://webrevs.openjdk.org/?repo=jdk&pr=23384&range=05 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=23384&range=04-05 Stats: 143 lines in 2 files changed: 128 ins; 10 del; 5 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
