[foreign-memaccess+abi] RFR: 8275647: Enable multi-register return values for optimized upcall stubs

[Nick Gasson]

On Tue, 2 Nov 2021 19:07:45 GMT, Jorn Vernee <jvernee at openjdk.org> wrote:

> 
> Note, in it's current state this patch will disable regress AArch64 since optimized upcalls are not implemented there yet. i.e. this PR is blocked by: https://bugs.openjdk.java.net/browse/JDK-8275646
> 

I've nearly finished this, I'll send the patch tomorrow.

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PR: https://git.openjdk.java.net/panama-foreign/pull/608