[crac] RFR: Simplify CPUFeatures code

[Radim Vansa]

On Sat, 16 Sep 2023 15:41:32 GMT, Jan Kratochvil <jkratochvil at openjdk.org> wrote:

> There is no functionality change. I guess the new code should be more simple and shorter. It was originally suggested by @AntonKozlov to use more functions than macros.

As much as I'd like to keep the PR queue short I am unfamiliar with this part of codebase, I'll leave the review up to @AntonKozlov since he did the review last time.

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PR Comment: https://git.openjdk.org/crac/pull/112#issuecomment-1733682173