RFR: 8329433: Reduce nmethod header size [v4]

[Vladimir Kozlov]

On Tue, 16 Apr 2024 19:20:37 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

>> Delegating constructors are the answer to having some common 'init' functions.  It would simply save lines of code that look the same in both constructor initializer lists.  But it's a drive-by comment.
>
> Okay.

It is tempting to do for `nmethod` to replace `init_defaults()`. I will look what can be done.

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PR Review Comment: https://git.openjdk.org/jdk/pull/18768#discussion_r1567866651