* config/alpha/alpha.c (ALPHA_BUILTIN_THREAD_POINTER): New.
        (ALPHA_BUILTIN_SET_THREAD_POINTER): New.
        (code_for_builtns): Update.
        (alpha_init_builtins): Add __builtin_thread_pointer and
        __builtin_set_thread_pointer.
        (alpha_expand_builtin): Handle void builtins.
        * doc/extend.texi (Alpha Built-in Functions): Update.

From-SVN: r54543