Raise a warning when exceeding code size limit (EIP-170)

[iamdefinitelyahuman]

What's your issue about?

The compiler should raise a warning when size of the generated runtime bytecode is >24577 bytes (EIP-170).

Because other chains may have different / no limits, we should not raise an exception. But I think for the majority of users, a warning will save some debugging headaches.

[fubuloubu]

Just to clarify, is it the deployment bytecode or the runtime bytecode that's affected by this size?

I believe it's the runtime, but should be sure of that. Error message should probably give some of this context too e.g. constructor doesn't count towards codesize

[iamdefinitelyahuman]

Yes, 100% it's based on runtime bytecode.

[fubuloubu]

close in favor of #2150