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[resending to correct llvm-dev address] Hi, I’d like to start enabling the loop data prefetch pass for Cyclone (an ARM64 subtarget). AFAICT, you can’t really add passes specifically to a subtarget but only to a target. This makes sense because in the new world, you could have different subtargets per function. I just want to make sure my understanding is correct. My plan is to add the pass