This PR addresses a performance degradation when constructing a new MessageFormat that contains a subformat with a pattern that is not a predefined style. This is due to internal logic which catches an IAE specifically for subformat patterns. Perf tests for choice and number are not grouped, since performance is directly tied to subformat creation.
M1 Mac - Perf (before): MessageFormatterBench.testSubformatChoice thrpt 15 865.430 ± 6.766 ops/ms MessageFormatterBench.testSubformatNumber thrpt 15 1021.808 ± 11.413 ops/ms M1 Mac - Perf (after): Benchmark Mode Cnt Score Error Units MessageFormatterBench.testSubformatChoice thrpt 15 1671.033 ± 55.012 ops/ms MessageFormatterBench.testSubformatNumber thrpt 15 3275.727 ± 47.370 ops/ms ------------- Commit messages: - perf - impl Changes: https://git.openjdk.org/jdk/pull/28806/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=28806&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8373566 Stats: 58 lines in 2 files changed: 21 ins; 11 del; 26 mod Patch: https://git.openjdk.org/jdk/pull/28806.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/28806/head:pull/28806 PR: https://git.openjdk.org/jdk/pull/28806
