[Bug target/104853] [RISC-V] -march=rv64g not including extension Zifencei

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104853

--- Comment #10 from Kito Cheng <kito at gcc dot gnu.org> ---
I plan to fix that in next few day for trunk and backport to GCC 11.