https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94413
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
in expand_vec_cond_expr_p there is
if (VECTOR_BOOLEAN_TYPE_P (cmp_op_type)
&& get_vcond_mask_icode (TYPE_MODE (value_type),
TYPE_MODE (cmp_op_type)) != CODE_FOR_nothing)
return true;
which doesn't bother to look at 'code' (though here we don't have
VECTOR_BOOLEAN_TYPE_P). For the other cases we build test RTL and
check insn operand predicates.
