RFR: 8344381: [s390x] Test failures with error: Register type is not known [v2]

[Amit Kumar]

On Mon, 18 Nov 2024 16:31:05 GMT, Martin Doerr <mdoerr at openjdk.org> wrote:

> Do Z_VR0 to Z_VR15 match the FP registers?

Yes they do override. 

> If so, why are you saving and restoring Z_V2 to Z_V15 twice?

Right, so register allocator will not use them, as it is not allowed to, So no need to preserve the 2nd-half. Right. Even if we use them manually we can preserve them ourselves.

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PR Comment: https://git.openjdk.org/jdk/pull/22197#issuecomment-2483547656