https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111720
--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> --- I suspect if __riscv_vle8_v_u8m1 gets lowered into a load on the gimple level, it might just work ... But it gets expanded as: (insn 14 13 0 (set (reg/v:RVVM1QI 134 [ varrD.56526 ]) (if_then_else:RVVM1QI (unspec:RVVMF8BI [ (const_vector:RVVMF8BI repeat [ (const_int 1 [0x1]) ]) (reg:DI 145) (const_int 2 [0x2]) repeated x2 (const_int 0 [0]) (reg:SI 66 vl) (reg:SI 67 vtype) ] UNSPEC_VPREDICATE) (mem:RVVM1QI (reg:DI 144) [0 S[16, 16] A8]) (unspec:RVVM1QI [ (reg:SI 0 zero) ] UNSPEC_VUNDEF))) "/app/example.c":7:23 -1 (nil)) That seems complex.