RFR: 8370473: C2: Better Aligment of Vector Spill Slots [v2]

[Martin Doerr]

On Fri, 7 Nov 2025 16:22:32 GMT, Richard Reingruber <rrich at openjdk.org> wrote:

>> ideal_reg() == Op_VecX is already in the condition above.
>
> Indeed but what if that ever changes?? That case will be silently unhandled.

We will run into ShouldNotReachHere(); // Unimplemented (line 2000)

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PR Review Comment: https://git.openjdk.org/jdk/pull/27969#discussion_r2504477806