I am working on a gcc-plugin where I need to create a structure at compile time. I have gleaned over one of the front ends to learn more about creating structures at compile time. What I have thus far is a type node for my struct.
I now need to create an instance of this struct. For exemplary purposes we will call this type 'struct T' and we will call the instance of T, 'my_T' By using the build_constructor() routine in GCC I create an instance, my_T, which I need to pass the address of to a function. So, I take this decl, my_T, and pass it to build_fold_addr_expr(). The result of the latter is what I pass to the function 'fn()'. Yes, the function I am passing the reference to is expecting the proper type, that of address-to-T. Running this presents me with an error in expand_expr_real_1() where "Variables inherited from containing functions should have been lowered by this point." So, I figure, if I create a temp variable, 'V', of type pointer-to-T, and run make_ssa_name() on that temp. And then insert an assignment before the call to fn, so I get: 'V = &my_T;' After looking at the GIMPLE dump, I see, 'V = &my_T; fn(V);' Which is correct, however, in the type list of the caller, I only see: 'struct * V;' Now, this concerns me, I would expect to see "struct T *V;" As above, this case also fails. I am baffled, do I need to even be creating the ssa_name instance to pass to 'fn()', which is 'V' in the case above? Or, will the build_constructor() produce a tree node that I can treat as a variable, that I can pass to 'fn()' ? -Matt
