RFR: 8371656: HashMap.putAll() optimizations [v3]

[jengebr]

On Wed, 4 Feb 2026 19:31:10 GMT, Stuart Marks <smarks at openjdk.org> wrote:

>> @stuart-marks would you mind reviewing this one?  It's conceptually similar to the ArrayList modifications, but applied to different classes and most details differ.  I incorporated lessons about MOAT so that part should be cleaner.
>
> @jengebr Oops! Sorry, you had asked me to review this but I dropped the ball over the holidays. If you'd like me to review it, please reopen.

@stuart-marks  thanks for the followup!  I hope 2026 has been good so far!

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PR Comment: https://git.openjdk.org/jdk/pull/28243#issuecomment-3849726314