[LLVMdev] Modifying Named Structure Types

[Eli Friedman]

On Tue, Aug 14, 2012 at 1:23 PM, Joe Yan <jyan2 at umd.edu> wrote:
> Hi,
>
> I am trying to write a module pass that traverses through named structure
> types defined and modifies the type of certain fields in these named types.
> Is there any simple way of doing this? I am not quite sure how to get the
> LLVMContext's pImpl working from a pass since LLVMContextImpl is
> forward-declared.

Mutating types is unsupported, and generally a bad idea.  Make a new
named type, then replace all the values which use that type with
values which use the new type.

-Eli