RFR: 8354674: AArch64: Intrinsify Unsafe::setMemory [v2]

[Andrew Haley]

On Mon, 12 May 2025 06:52:12 GMT, Per Minborg <pminborg at openjdk.org> wrote:

> Looking at the improvements made, I suggest we also change (in `SegmentBulkOperations`):
> 
> ```
> private static final int NATIVE_THRESHOLD_FILL = powerOfPropertyOr("fill", Architecture.isAARCH64() ? 18 : 5); 
> ```
> 
> to
> 
> ```
>  private static final int NATIVE_THRESHOLD_FILL = powerOfPropertyOr("fill",  5);
> ```

Possibly so, yes, but I'm still looking at the reasons for the differences.

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PR Comment: https://git.openjdk.org/jdk/pull/25147#issuecomment-2871790462