How can I symbolicate addresses from an xctrace run?

I want to do a recording from the command-line with the Time Profiler, and get symbolicated stack traces from the resulting XML. Everything works for this using xctrace except that the addresses aren't symbolicated. After running xcrun xctrace export --xpath '//trace-toc[1]/run[1]/data[1]/table' ..., I see e.g. <text-addresses id="12397" fmt="frag 923">6915975758 ...</text-addresses>. So I have the addresses but they're not symbolicated. Is there an easy way to symbolicate them like Instruments.app does?