Refactor to improve inlining, which helps some microbenchmarks exer StringBuilder.append(String)
------------- Commit messages: - 8273100: Improve AbstractStringBuilder.append(String) when using CompactStrings Changes: https://git.openjdk.java.net/jdk/pull/5291/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=5291&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8273100 Stats: 21 lines in 1 file changed: 11 ins; 2 del; 8 mod Patch: https://git.openjdk.java.net/jdk/pull/5291.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/5291/head:pull/5291 PR: https://git.openjdk.java.net/jdk/pull/5291