Integrated: 8285743: Ensure each IntegerPolynomial object is only created once

[Weijun Wang]

On Fri, 29 Apr 2022 22:30:04 GMT, Weijun Wang <weijun at openjdk.org> wrote:

> All `IntegerPolynimial`s are singletons now. Also, hand-coded implementations for Ed25519 and Ed448 are removed. They were not used since `FieldGen` starts generating classes for them.
> 
> No new regression test. This is a clean-up.

This pull request has now been integrated.

Changeset: 397d095f
Author:    Weijun Wang <weijun at openjdk.org>
URL:       https://git.openjdk.java.net/jdk/commit/397d095f661e9d9c98b8254fb7867dc87047b0b8
Stats:     507 lines in 10 files changed: 16 ins; 465 del; 26 mod

8285743: Ensure each IntegerPolynomial object is only created once

Reviewed-by: xuelei, ascarpino

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PR: https://git.openjdk.java.net/jdk/pull/8476