RFR: 8336638: Parallel: Remove redundant mangle in PSScavenge::invoke

[Albert Mingkun Yang]

On Wed, 17 Jul 2024 10:02:22 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

> Trivial removing unnecessary clear at start of young-gc. Also move a precondition to the start, as early as possible.

Thanks for review.

-------------

PR Comment: https://git.openjdk.org/jdk/pull/20216#issuecomment-2233508388