On Fri, 19 Jul 2024 21:42:09 GMT, Shaojin Wen <d...@openjdk.org> wrote:
>> 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. > > Shaojin Wen has updated the pull request incrementally with two additional > commits since the last revision: > > - Update src/java.base/share/classes/java/lang/String.java > > Co-authored-by: Chen Liang <li...@openjdk.org> > - add comments Below are the performance numbers of the latest version running on a MacBook M1 Pro, which is 9.19% faster -Benchmark (intValue) Mode Cnt Score Error Units (base c25c4896ad9ef031e3cddec493aef66ff87c48a7) -StringConcat.concatMethodConstString 4711 avgt 15 5.440 ? 0.075 ns/op +Benchmark (intValue) Mode Cnt Score Error Units (current 69901157e4dae9018abd727956f60fd11b8fa252) +StringConcat.concatMethodConstString 4711 avgt 15 4.982 ? 0.019 ns/op +9.19% ------------- PR Comment: https://git.openjdk.org/jdk/pull/20253#issuecomment-2240251072
