https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118892
--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> --- ``` (insn 11 10 12 2 (set (reg:V2DI 107) (const_vector:V2DI [ (const_int -9223372036854775808 [0x8000000000000000]) repeated x2 ])) "/app/example.cpp":7:10 -1 (nil)) (insn 12 11 13 2 (set (subreg:V2DI (reg:DF 106 [ <retval> ]) 0) (ior:V2DI (nil) (reg:V2DI 107))) "/app/example.cpp":7:10 -1 (nil)) ``` Notice the (nil) there.