How do you do these tasks with GCC 6?

- graphical debugging of parallel tasks and threads

- displaying data structures graphically with code navigation

- WYSIWYG UIs with tooling like Blend

- GPU debugging

- Code navigation across object files, shared libraries and source code

- Incremental compilation and linking with intermediate representations stored in a database.

- Out of the box representation for all STL data structures and user defined types

Tooling is much more than just a plain old compiler.