[LLVMdev] JIT functions' signature known only at runtime

[Frank Winter]

Hi there! I am trying to figure out how I can call the function returned
by the JIT execution engine. The only circumstance that makes this case
a little problematic is that the function's signature is only available as
runtime state. More precisely the arguments to be passed are only
available as a vector of, e.g.,

union Types {
   void   *ptr;
   float  *ptr_float;
   double *ptr_double;
   float  fl;
   int    in;
   double db;
   bool   bl;
};

std::vector<std::pair<int,Types> > arguments;

where the first element of the pair would clearly identify of which type 
the argument is.

I thought that I might not be the first having this problem and checked 
the mailing list
without success.

Does LLVM has any glue code to call functions returned by the JIT 
execution engine?

Or is the only solution in this case to pass the address of the whole 
vector and let the
jitted function handle everything?


Frank