> They plan to use the exact same code!

Did they announce a change of plans? Their website just says that they have no plans for a borrow checker (i.e. it's not required to actually implement rust).

From the website for the project:

> There are no immediate plans for a borrow checker as this is not required to compile rust code and is the last pass in the RustC compiler. This can be handled as a separate project when we get to that point.

Link here: https://rust-gcc.github.io/