-- Once that happens, this function will just emit a (CmmSafe srt) call,
-- and the CPS will will be the one to convert that
-- to this sequence of three CmmUnsafe calls.
-- Once that happens, this function will just emit a (CmmSafe srt) call,
-- and the CPS will will be the one to convert that
-- to this sequence of three CmmUnsafe calls.