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Nicholas Nethercote
3ff4201fd1
Because the things in this module aren't MIR and don't use anything from `rustc_middle::mir`. Also, modules that use `mono` often don't use anything else from `rustc_middle::mir`.
The codegen crate contains the code to convert from MIR into LLVM IR,
and then from LLVM IR into machine code. In general it contains code
that runs towards the end of the compilation process.
For more information about how codegen works, see the rustc dev guide.