Review comment: save allocations when evolving.
Review comment: save allocations when evolving.

mozilla/mentat,ncalexan/mentat,mozilla/mentat,mozilla/mentat,bgrins/datomish,ncalexan/datomish,ncalexan/mentat,ncalexan/mentat,ncalexan/mentat,bgrins/datomish,mozilla/mentat,mozilla/mentat,ncalexan/datomish,mozilla/mentat,ncalexan/mentat,ncalexan/mentat