// `resource_equivalence_classes`. Resources are equivalent if they are accessed
// by a common op, and equivalent resources will be assigned to the same chain.
void CollectChainResources(
    func::FuncOp func, ResourceToOpsMapTy& chain_resource_to_ops_map,
    llvm::EquivalenceClasses<ResourceAndDevice>& resource_equivalence_classes,
    DeviceMap& devices,