RFR: 8309583: AArch64: Optimize firstTrue() when amount of elements < 8

[Aleksey Shipilev]

On Mon, 19 Jun 2023 10:05:37 GMT, Chang Peng <duke at openjdk.org> wrote:

> Output before this patch: https://gist.github.com/changpeng1997/734aa176577bfff56f5a87db9c8db69a 
> Output after this patch: https://gist.github.com/changpeng1997/73098069b8f814310d6606dfd7dc56c5

Blackhole mode autodetection was added in JMH 1.33, and enabled in JMH 1.34. The logs above say they run with JMH 1.33. Current version is 1.36, you need to upgrade, @changpeng1997. 

Also, I notice that your before/after logs use different JVM modes, one uses `release`, and another uses `fastdebug`. These are not comparable.

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PR Comment: https://git.openjdk.org/jdk/pull/14373#issuecomment-1600982239