RFR: 8333893: Optimization for StringBuilder append boolean & null [v4]

[Claes Redestad]

On Tue, 25 Jun 2024 17:19:28 GMT, Emanuel Peter <epeter at openjdk.org> wrote:

> I filed:
> 
> [JDK-8335113](https://bugs.openjdk.org/browse/JDK-8335113): C2 MergeStores: allow merging of putChar and other larger stores on smaller array elements

Great! Should we hold off on this optimization and see if we can avoid the need for `Unsafe` here - or go ahead integrating this PR and leave it to JDK-8335113 to revert any no-longer-needed changes made here?

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PR Comment: https://git.openjdk.org/jdk/pull/19626#issuecomment-2191878373