I 'd like to see some facts please.
I can tell you it's 3 times faster but if I don't show you the facts, it's not worth anything...
About compile time: try to compile wxWidgets.
About performance and antigrain. I was referring to an example included with antigrain distro.
It's a simple benchmark with some performance value about drawing line points ecc, not really a good one for a compiler, but it could give you an idea. On my machine f.e. first value is 60k/s (points) for digital mars, 40/s for visual c++ and 10kb/s (!) for mingw. I have no more mingw installed so i can't compile it but i remember the value... (and i have a bug with C::B that tells me it can't found mingw-g++ ...) If you don't trust me, you can do some test by yourself.
I tried it also with many other example, with my simple wxapp difference is small, but in some case you can taste it (usually in frame loading time and complex operations...). I think that in codeblocks this difference could be bigger.
By the way it's just an opinion. Maybe i'm wrong about it. In this case don't worry and go on compiling this fantastic ide with mingw!
A. Fontana