Much of this discussion is passe, I am afraid. It is quite clear that Clang/LLVM are leaps and bounds ahead in the tooling field; I see arguments about if the front door should be locked, when it's plain that the back door of the house has been opened and there is a thriving auction of the goods from the porch.
If GCC is to compete on the tooling field, it will have to provide superior functionality that will not only meet Clang's bar, but exceed it significantly. I invite interested parties to play with XCode, Visual Studio, Eclipse, and IntelliJ to begin to understand exactly what the competition is.
I would far rather see a libre software product at the top of the field, but it requires adaptation to the current world. Let the data be free, please.