RFR: 8365581: Optimize Java implementation of P256 arithmetic

[Chen Liang]

On Wed, 20 Aug 2025 14:47:58 GMT, Ferenc Rakoczi <duke at openjdk.org> wrote:

> What do you mean by "works"? And why doesn't it work for the zeroes?

As descirbed by [the documentation of `@Stable`](https://cr.openjdk.org/~jrose/jvm/Stable.html), a 0 value may be interpreted as "uncomputed" for lazy values, and the compiler will refuse to inline this value.  As a result, in #26341, the 0 constants in arrays are explicitly rewritten instead.

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PR Comment: https://git.openjdk.org/jdk/pull/26792#issuecomment-3206842333