[Bug middle-end/96200] Implement __builtin_thread_pointer() and __builtin_set_thread_pointer() if TLS is supported

[fw at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96200

Florian Weimer <fw at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |fw at gcc dot gnu.org

--- Comment #1 from Florian Weimer <fw at gcc dot gnu.org> ---
__builtin_set_thread_pointer has little value from a glibc perspective because
when used in application code, it will always result in undefined behavior.