GNU FUD : http://gcc.gnu.org/ml/gcc/2003-08/msg01136.html

"""" The tree and rtl dumps are intended as debugging aids only. There is no need for them to be complete, they only need to include info we need for debugging. Since we never try to process them, we would never notice if they were incomplete.

As for completing them, that is a potential problem. An FSF policy, intended to prevent people from subverting the GPL, prevents us from emitting debug/intermediate files that could be used by others to use proprietary code with gcc without linking to gcc. This is an inconvenience, but it is current FSF policy so we must respect it. """"

What a primitive and unproductive policy.