RFR: 8355719: Reduce memory consumption of BigInteger.pow() [v38]

[fabioromano1]

On Mon, 28 Apr 2025 14:12:29 GMT, Chen Liang <liach at openjdk.org> wrote:

> Doesn't pre-seeding involve extra cpu cycles which are defintely wasted if the results aren't used?

It would involve just 3 assignments and 3 multiplications of 64-bit words, I think the overhead is negligible.

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PR Review Comment: https://git.openjdk.org/jdk/pull/24690#discussion_r2063765833