I read a post on Apple's performance and optimization mailing list that tells you what to do to use Saturn on Intel Macs. This information may be useful to some of you so I am writing about it here.
To use Saturn to profile your code, you must compile your code with either the -pg compiler flag (Generate Profiling Code build setting in Xcode) or the -finstrument-functions compiler flag. The -pg compiler flag is the flag most people use, but Apple hasn't added the support for -pg on Intel Macs yet so using the -pg flag won't allow you to run your code with Saturn on an Intel Mac.
The solution is to use the -finstrument-functions flag to compile your code. I didn't see an Xcode build setting for this flag so you'll have to add the flag to the Other C Flags or Other C++ Flags build setting in Xcode.
I don't have an Intel Mac so I can't test this for myself, but the information came from an Apple engineer so I will assume the information is accurate.