With the introduction of [8336856: Efficient hidden class-based string concatenation strategy](https://github.com/openjdk/jdk/pull/20273) , the StringConcatFactory#generateMHInlineCopy method is no longer used by default.
After a year of community use, the InlineHiddenClassStrategy has proven to work well, so I recommend removing the implementation of StringConcatFactory#generateMHInlineCopy. ------------- Commit messages: - clean up StringConcatHelper - remove generateMHInlineCopy Changes: https://git.openjdk.org/jdk/pull/27374/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27374&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8368024 Stats: 783 lines in 5 files changed: 1 ins; 780 del; 2 mod Patch: https://git.openjdk.org/jdk/pull/27374.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/27374/head:pull/27374 PR: https://git.openjdk.org/jdk/pull/27374
