RFR: 8302907: [PPC64] Use more constexpr in class Register

Tue Feb 21 11:01:26 UTC 2023

On Tue, 21 Feb 2023 03:58:50 GMT, Martin Doerr <mdoerr at openjdk.org> wrote:

> We should use `constexpr` more often in order to make it better usable. (I got compile errors when trying to use the `encoding()` in another `constexpr`.)

Thanks for the review! Pre-submit tests failure is unrelated (x86, but this PR only touches PPC64).

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PR: https://git.openjdk.org/jdk/pull/12681