Hey,

first of all thank you for this lib, it is very nice to work with!

I noticed that llvm can have int values of arbitrary size, one example mentions an integer with the size of more than a million bits. In the case that raised this question for me, I have a constant integer size of 128, in a normally compiled program. However, the actual value fits inside a u64 and is used as part of the mul instruction.
https://releases.llvm.org/10.0.0/docs/LangRef.html#integer-type

The internal field value that contains the constant value is of size u64.

So my question is, what happens for a constant int value that is larger than a u64?