llvm dev - Jan 2013 - [LLVMdev] CloneFunctionInto/MapValue, problem when VMap changes type

Hello All,

I am having a problem with using CloneFunctionInto to clone a function that
includes changing the type of a value using the VMap. Specifically, I am using
the VMap to change the address space of values that have particular pointer
types.

The problem seems to be that RemapInstruction successfully changes the operands
using the VMap, but the VTy member indicating the type of the instruction does
not change to reflect the new types. In my case, this manifests itself as a
GetElementPtr instruction (among others) that is accessing a value with a
pointer in address space 1, but getType() returns a pointer in address space 0
(the types match otherwise).

Unfortunately, I don't see any way to fix this without duplicating the logic
for getting the VTy for each class of instruction. I am wondering if someone
more familiar with this functionality might have a better idea of how to fix
this?

Thanks!
Dillon