On Fri, 18 Oct 2024 21:56:53 GMT, Shaojin Wen <s...@openjdk.org> wrote:

>> After PR https://github.com/openjdk/jdk/pull/16245, C2 optimizes stores into 
>> primitive arrays by combining values ​​into larger stores.
>> 
>> This PR rewrites the code of appendNull and append(boolean) methods so that 
>> these two methods can be optimized by C2.
>
> Shaojin Wen has updated the pull request with a new target base due to a 
> merge or a rebase. The incremental webrev excludes the unrelated changes 
> brought in by the merge/rebase. The pull request contains 26 additional 
> commits since the last revision:
> 
>  - Merge remote-tracking branch 'origin/optim_str_builder_append_202406' into 
> optim_str_builder_append_202406
>  - fix build error
>  - Merge remote-tracking branch 'upstream/master' into 
> optim_str_builder_append_202406
>  - Merge remote-tracking branch 'upstream/master' into 
> optim_str_builder_append_202406
>  - Merge remote-tracking branch 'origin/optim_str_builder_append_202406' into 
> optim_str_builder_append_202406
>  - Merge remote-tracking branch 'upstream/master' into 
> optim_str_builder_append_202406
>  - Merge remote-tracking branch 'upstream/master' into 
> optim_str_builder_append_202406
>  - revert test
>  - Merge remote-tracking branch 'upstream/master' into 
> optim_str_builder_append_202406
>  - Merge remote-tracking branch 'upstream/master' into 
> optim_str_builder_append_202406
>  - ... and 16 more: https://git.openjdk.org/jdk/compare/f6d711b7...457735c9

I'm not the library guy, so I'm not going to block this PR.
But having good tests and benchmarks are crucial, and very time-consuming to 
come up with for us compiler engineers. So these examples here are very 
valuable, and I think the time is not wasted working more on it.

-------------

PR Comment: https://git.openjdk.org/jdk/pull/19626#issuecomment-2426020938

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