On Mon, 2010-05-31 at 10:02 -0700, Mark Mitchell wrote: > I think virtual functions are on the edge; quite useful, but do result > in the compiler adding a pointer to data objects and in uninlinable > indirect calls at run-time. Therefore, I would avoid them in the > initial subset of C++ used in GCC.
We do, of course, have one very big 'virtual function' table in gcc -- namely the target hooks. It would be a shame if that couldn't be made into a proper class with virtual functions by some arbitrary rule -- it's a perfect example of when they should be considered. R.
