[Bug c/119092] Add support for clang/LLVM builtin __builtin_{reduce,elementwise}_*

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119092

--- Comment #6 from Drea Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 116881 has been marked as a duplicate of this bug. ***