[Bug target/99312] __ARM_ARCH is not implemented correctly when compiled with -march=armv8.1-a

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99312

--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
ODP is one place where this is used:
https://opendataplane.github.io/odp/structodp__system__info__t.html