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

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96200
Bug 96200 depends on bug 96955, which changed state.

Bug 96955 Summary: Implement __builtin_thread_pointer for x86 TLS
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96955

           What    |Removed                     |Added
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             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |FIXED