Anything and everything with tests implemented in the right languages can be used as a test suite for a compiler, though. So, I'd rather see that that was done

Anything and everything with tests implemented in the right languages can be used as a test suite for a compiler, though. So, I'd rather see that that was done systematically than trying to catch everything with the compiler's test suite. I mean something like setting up something building and running the tests for everything included in Debian, homebrew and vcpkg and looking for regressions compared to the last release of the compiler.