[LLVMdev] Why some registered passes are not available through opt?

[Dmitry N. Mikushin]

Dear LLVM,

I'm trying to understand why opt tool does not know some of the
registered passes, for example, -targetpassconfig, -gc-lowering,
-unreachableblockelim, -unreachableblockelim, -stack-protector,
-machinemoduleinfo. This prevents me from using bugpoint to reduce the
crash in backend. As I understand, they should be registered and
available through the command line in the same way as all other
passes, shouldn't they?

Thanks,
- Dima.