[Bug middle-end/128010] aarch64 has no asm clobber syntax for the top bits of sve z regs needed by syscalls

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=128010

--- Comment #2 from Drea Pinski <pinskia at gcc dot gnu.org> ---
I thought linux syscalls only clobber the gprs on aarch64 by design.