Squeak Smalltalk is 53 MB on Windows (excluding sources). 48 MB of that is the image with UI framework and so on, but it's not immediately easy to say which library/ui parts are core.
I'm not sure what your point is. The person I replied to was justifying a 266MB binary by saying a compiler was included. Are you saying optimization would make tcc 2,660 times as big?
The point is that LLVM does much, much more than TCC and, while it is definitely possible that LLVM could have done that in a smaller binary, TCC is probably not a good thing to compare with because it only does a bare minimum. I should also note that LLVM is a cross-compiler by default...