https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79469
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |WONTFIX
Status|NEW |RESOLVED
--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
So even though clang/LLVM has not implement the attribute yet
(https://github.com/llvm/llvm-project/pull/81014), adding another extension is
not a good idea for GCC so closing as won't fix. There is a reason why this got
standarized is so it can be implemented in a cross compiler way.
Also the builtin has an odd definition when it comes to the whole no side
effects (though the attribute has that, it is not directly part of the a
function call).
