git: openjdk/jdk: master: 8355177: Speed up StringBuilder::append(char[]) via Unsafe::copyMemory

[Shaojin Wen]

Changeset: e2feff85
Branch: master
Author:    Shaojin Wen <swen at openjdk.org>
Date:      2025-07-30 13:16:27 +0000
URL:       https://git.openjdk.org/jdk/commit/e2feff85995cf2d0b8ecc2262cf4e74b74de3e31

8355177: Speed up StringBuilder::append(char[]) via Unsafe::copyMemory

Reviewed-by: rriggs, rgiulietti

! src/java.base/share/classes/java/lang/StringUTF16.java
! test/micro/org/openjdk/bench/java/lang/StringBuilders.java