------- Comment #2 from rguenth at gcc dot gnu dot org 2010-09-20 15:46 ------- Of course it is ;) Before pointer-conversions became useless we didn't propagate the invariant address into the OBJ_TYPE_REF expression.
We still have useful function-pointer conversions as well, because dropping them would wreck CALL_EXPRs, too (we need to preserve the original function type, similar to the alias-type on MEM_REFs). I suppose we could do the same for OBJ_TYPE_REFs that I plan(ned) for CALL_EXPRs - store the pointed-to type via a MEM_REF - thus a dereferenced address. You'd then have CALL_EXPR (MEM [fnptr], args ...) OBJ_TYPE_REF (MEM [fnptr], MEM [objptr], index) where both TREE_TYPE of the function and the object are kept like the FE specified them. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45734
