Backend Function Pass

Are there any known examples of a backend using a function pass, not a machine function pass, to do LLVM-LLVM transformations right before ISelDagToDag?

Thanks,

Micah

Hello

Are there any known examples of a backend using a function pass, not a
machine function pass, to do LLVM-LLVM transformations right before
ISelDagToDag?

Just schedule pass as normal, before doing codegen.