The LLVM Core project consists of:
- Compiler - converts source code to LLVM IR
- VM - executes compiled IR code
How can I embed the VM to a C++ application?
Take a look at the HowToUseJIT example in LLVM.
The LLVM is really a collection of libraries that you can link to, so it's pretty easy to embed. More often the LLVM takes IR that you generate and compiles it directly to machine code. There is also a library available to interpret and execute IR for platforms that do not support JIT compilation.
There's a pretty good tutorial available on the LLVM website here: http://llvm.org/docs/tutorial/. I suggest that you go through that and then ask more specific questions if you have them.
来源：https://stackoverflow.com/questions/3527467/how-to-embed-llvm