[Bug 230888] Missing 64 bit atomic functions for i386 (libatomic)

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=230888

--- Comment #20 from Dimitry Andric <dim at FreeBSD.org> ---
(In reply to Jan Beich from comment #19)
I have no specific plans for this particular bug, but my personal preference
would be to merge llvm/clang/libc+/etc 9.0 (and later) into stable/12 and
stable/11.

Because in practice, clang 8.0 and earlier have generating code that will only
run on i586 and higher anyway, for a long time, even if you *did* pass
-march=i486!

That said, I know some people are of the opinion that stable branches should
receive far less "feature updates", or even none at all, and only security or
"P1" bug fixes.  Therefore, this is not really my call, but I gladly leave it
up to the community to decide. :)

Note that this latter scenario (stable branches getting no feature updates)
will almost certainly require either stable branches for ports in general, or
the ports collection stopping to use the base toolchains and only using their
own.

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