Currently simpleConcat is implemented using mix and prepend, but in this simple scenario, it can be implemented in a simpler way and can improve performance.
------------- Commit messages: - copyright 2024 - optimize String.concat Changes: https://git.openjdk.org/jdk/pull/20253/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20253&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8336831 Stats: 11 lines in 1 file changed: 0 ins; 4 del; 7 mod Patch: https://git.openjdk.org/jdk/pull/20253.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/20253/head:pull/20253 PR: https://git.openjdk.org/jdk/pull/20253
