47f54e4992
In perf2bolt, we are observing sporadic crashes in the recently added registerProfiledFunctions from #150622. Addresses provided by the hardware (from LBR) might be -1, which clashes with what LLVM uses in DenseSet as empty tombstones records. This causes DenseSet to assert with "can't insert empty tombstone into map" when ingesting this data. Revert this change for now to unbreak perf2bolt.