RFR: 8333893: Optimization for StringBuilder append boolean & null [v3]

[Emanuel Peter]

On Tue, 11 Jun 2024 05:42:27 GMT, Shaojin Wen <duke at 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 incrementally with one additional commit since the last revision:
> 
>   bug fix

Also: the assembly that you pasted: does it have the original stores, or do you see that the stores were actually merged?

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PR Comment: https://git.openjdk.org/jdk/pull/19626#issuecomment-2160305076