Compiling back LLVM IR

Hi there and congratulations with open-sourcing such a useful tool. :)

As an experiment, I tried to compile back generated *.bc file. And got many undefined reference errors on ```_asm_smth()```, ```pseudo_smth()``` calls and many ```unknown_smth``` symbols. Is there any future possibility to recompile binaries?

Start by examining the generated .bc file and the reported undefined _asm_smth(), pseudo_smth(), and unknown_smth symbols. Determine whether recompiling generated LLVM IR is an intended capability and what changes would be needed to make those symbols resolvable; done means a defined scope and demonstrated recompilation path.

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