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I'm working thought the Kaleidoscope tutorials for LLVM 3.3 and noticed the code listing for chapter 4 is out of date on the web. Take a look at http://llvm.org/releases/3.3/docs/tutorial/LangImpl4.html. The first line includes llvm/DerivedTypes.h, but this does not compile. The correct path is llvm/IR/Derivedtypes.h. There are other differences, and the examples that I pulled along with