What to pass for the vmap argument of CloneFunction in llvm?

问题

I am trying to clone the exact copy of another function. I have not been able to find any examples of CloneFunction usage on the internets.

回答1:

It turns at the you can just create a ValueToValueMapTy variable and pass it without initialization.

回答2:

The following code segment is enough for cloning the function called Func

ValueToValueMapTy VMap; auto *Clone = CloneFunction(Func, VMap);

rahib bob

来源：https://stackoverflow.com/questions/13104085/what-to-pass-for-the-vmap-argument-of-clonefunction-in-llvm