https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110280
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> --- #6 0x000000000087710b in const_unop (code=VEC_UNPACK_LO_EXPR, type=<optimized out>, arg0=<optimized out>) at ../../gcc/fold-const.cc:1954 1954 gcc_assert (known_eq (out_nelts, TYPE_VECTOR_SUBPARTS (type)));