numba/numba — pull request #890 by pitrou (2014-12-11 19:03:20+00:00)
Title: [WIP] Auto inline jitted callees inside jitted callers

It turns out to seem easy with our current infrastructure (assuming this is not breaking any non-Linux platform).
I'd still like to write some tests for it. Programmatically inspecting the LLVM IR for the optimized module sounds like a decent option for it.