How do I profile Prelude functions?

[Bayley, Alistair]

I can't find advice in the GHC manual on determining how much time your
program spends in Prelude functions. I've discovered that I can alias a
Prelude function e.g.

> import Data.Set

....

> myMkSet = mkSet

... which will give me a cost-centre for mkMySet. Isn't there an easier way
to do this?


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