[Bug target/116592] illegal operands th.vsetvli zero,0,e32,m8 with -O2 -O3 when compiling for risc-v xtheadvector

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116592

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I think it is time to remove xtheadvector support it is just broken.