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

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

Tijl Coosemans <tijl at FreeBSD.org> changed:

           What    |Removed                     |Added
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                 CC|                            |tijl at FreeBSD.org

--- Comment #34 from Tijl Coosemans <tijl at FreeBSD.org> ---
(In reply to Dimitry Andric from comment #32)
For the old gcc you will probably have to use the __sync_* builtins as in our
stdatomic.h.  But I think there's a problem with the implementation in
compiler_rt.  Clang generates functions calls to compiler_rt if it can't inline
__c11_atomic_* (e.g. if the architecture only guarantees atomicity if an object
is properly aligned and a given object isn't aligned) so how can compiler_rt
then use __c11_atomic_*?

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