https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82066
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Also the documentation for the target attribute does not point to the aarch64 documentation (it does point to the arm one though): The options supported are specific to each target; refer to x86 Function Attributes, PowerPC Function Attributes, ARM Function Attributes,and Nios II Function Attributes, for details.