Integrated: 8302780: Add support for vectorized arraycopy GC barriers

[Erik Österlund]

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On Mon, 20 Feb 2023 15:23:04 GMT, Erik Österlund <eosterlund at openjdk.org> wrote:

> So far, the arraycopy stubs have performed some kind of bulk pre/post barriers for arraycopy, which have been good enough, and allowed the copying itself to be done with plain loads and stores. For generational ZGC, this approach is not good enough, and we need barriers for the actual copying, but instead don't need the pre/post barriers. To prepare the JVM for generational ZGC, we need to add an API for arraycopy barriers.

This pull request has now been integrated.

Changeset: 5f153e05
Author:    Erik Österlund <eosterlund at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/5f153e056b1929a306b0907f4528bbd2766699c2
Stats:     970 lines in 11 files changed: 663 ins; 30 del; 277 mod

8302780: Add support for vectorized arraycopy GC barriers

Co-authored-by: Yadong Wang <yadongwang at openjdk.org>
Reviewed-by: ayang, fyang, rcastanedalo, aph

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PR: https://git.openjdk.org/jdk/pull/12670