If it generates a booting kernel and passes the test suite at 99% it's probably good enough to use, yeah.
The point isn't to replace GCC per se, it's to demonstrate that reasonably working software of equivalent complexity is within reach for $20k to solve whatever problem it is you do have.
The point isn't to replace GCC per se, it's to demonstrate that reasonably working software of equivalent complexity is within reach for $20k to solve whatever problem it is you do have.