LLVM toolchain coming to OpenBSD/sparc64

Yes, you read that right. Modern development tools in the form of the LLVM compiler infrastructure is well on its way to supporting OpenBSD/sparc64 along with other more conventional architectures.

The support is now ready for testing, via a patch set presented by Kirill A. Korinsky (kirill@) in a message to the tech@ mailing list, with the subject LLVM toolchain for sparc64.

The message reads,

List:       openbsd-tech
Subject:    LLVM toolchain for sparc64
From:       Kirill A. Korinsky <kirill () korins ! ky>
Date:       2026-07-30 11:38:55
Message-ID: 87jyqcogfk.wl-kirill () korins ! ky

Folks,

I'd like to commit to devel/llvm/22 and gnu/llvm my cumulative patch for
support sparc64 by LLVM toolchain.

Not OpenBSD related bits was upstreamed as a few PRs and some parts are
actually already merged.

More or less this diff was tested by me and tb@ who runs his bulk during
which many small edge cases was discovered and fixed.

Here two diffs for the base and ports, I did my best to keep in
synchronized.

I haven't backported that changes to LLVM before 22, but we already mainly
switched to LLVM 22 everywhere.

I think it may have some missed pieces, but working in the tree will make
testing it simpler.

Ok to commit?

-- 
wbr, Kirill

["llvm-base.diff" (text/plain)]

followed by the patch that implements the changes.

If you are in a position to teast Kirill's work, that is if you run OpenBSD/sparc64-current, please do put the code through its paces and report back!