I'm looking for a way to get the FUNCTION_DECL for the library (i.e., non-built-in) form of a function given the corresponding built-in DECL. Is there an API I can all with either the built -in DECL or its code to get it in the middle end?
In C, what I'm looking for appears to be DECL_CHAIN(decl), at least for the example I looked at. I.e., the library libdecl for a corresponding __bultin_xxx DECL is DECL_CHAIN (DECL). But in C++, it looks like it's the other way around and it's the built-in decl that's the DECL_CHAIN(DECL) for the built-in DECL, and AFAIK there's no good way to get from the latter to the former. Thanks Martin
