RFR: 8332163: C2 SuperWord: refactor PacksetGraph and SuperWord::output into VTransformGraph [v11]

[Christian Hagedorn]

On Thu, 4 Jul 2024 10:10:34 GMT, Emanuel Peter <epeter at openjdk.org> wrote:

>> Feel free to take this up with the Runtime team ;)
>
> There are advantages and disadvantages to having an explicit `filler`. Because the way `GrowableArray` is implemented there needs to be a `fillter`. I guess one could have a `default` filler - but then that would only work for some pre-defined types I think... complicated.

For convenience, it could offer a constructor without filler which then just uses `nullptr`. But anyway, it's just a minor thing I've noticed while reviewing the code.

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PR Review Comment: https://git.openjdk.org/jdk/pull/19719#discussion_r1665522651