Revive support for SPARC V8

[Tiago Nogueira]

Hello,

I'm new to the mailing list, and i just hope this is the right place to
bring this up.

Support for SPARC V8 was removed in 2013 (see
https://bugs.openjdk.java.net/browse/JDK-8017756). The argument at the time
was that SPARC V8 hardware was not used any more (see
https://bugs.openjdk.java.net/browse/JDK-8008407).

Well, it turns out that the the space industry has finally caught up, and
the new generation of radiation hardened SoCs, at least in Europe, will be
based on SPARC V8 (see https://www.gaisler.com/doc/gr740/GR740-OVERVIEW.pdf
).

What would be the effort to revive support for SPARC V8? I think this would
be a great opportunity to get Java running on rad-hard hardware in low
Earth orbit and beyond...

Thanks
Tiago
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