fn simd_simple_float_intrinsic<'ll, 'tcx>(
    name: Symbol,
    in_elem: Ty<'_>,
    in_ty: Ty<'_>,
    in_len: u64,
    bx: &mut Builder<'_, 'll, 'tcx>,
    span: Span,
    args: &[OperandRef<'tcx, &'ll Value>]
) -> Result<&'ll Value, ()>