> The current implementation of StringConcat is to mix the coder and length > into a long. This operation will have some overhead for int/long/boolean > types. We can separate the calculation of the coder from the calculation of > the length, which can improve the performance in the scenario of concat > int/long/boolean. > > This idea comes from the suggestion of @l4es in the discussion of PR > https://github.com/openjdk/jdk/pull/20253#issuecomment-2240412866
Shaojin Wen has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 44 commits: - fix mix Integer null error - fix stringSize build error - Merge remote-tracking branch 'upstream/master' into optim_concat_factory_202407 - mix & prepend support Boolean/Integer/Long - more micro benchmark - rename simpleConcat -> makeSimpleConcat - remove benchmark - common simpleConcat - add benchmark - Descending mixer, same order as prepend - ... and 34 more: https://git.openjdk.org/jdk/compare/2fbdbaca...f241462c ------------- Changes: https://git.openjdk.org/jdk/pull/20273/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20273&range=16 Stats: 716 lines in 5 files changed: 583 ins; 42 del; 91 mod Patch: https://git.openjdk.org/jdk/pull/20273.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/20273/head:pull/20273 PR: https://git.openjdk.org/jdk/pull/20273
