why debugify passes reside in tools/opt?

Hi Vedant (and all),

is there a particular reason why Debugify passes - whether legacy or newpm -
are not handled like "normal" passes?
They reside in tools/opt and are not registered through standard registration

There is a verifier pass that is rather similar to debugify, but it resides in IR and
gets registered "normally".

Its mostly curiosity on my side rather than a pressing need, but current scheme
makes it impossible to use these passes in anything other than opt.


Hi Fedor,

These passes reside in the tools directory so that they do not add code size to every program that links llvm. Since -debugify is just a debugging tool for llvm developers, and is (at the moment) only invoked through opt, paying this size cost seemed unnecessary.