Using record data structure for the cost domain

Reviewed By: mbouaziz

Differential Revision: D13897572

fbshipit-source-id: 4148b18b4

infer/src/backend/InferPrint.ml

@@ -346,8 +346,10 @@ module JsonCostsPrinter = MakeJsonListPrinter (struct
         let hum =
           if Config.developer_mode then
             Some
-              { Jsonbug_t.hum_polynomial= Format.asprintf "%a" CostDomain.BasicCost.pp post
-              ; hum_degree= Format.asprintf "%a" CostDomain.BasicCost.pp_degree post }
+              { Jsonbug_t.hum_polynomial=
+                  Format.asprintf "%a" CostDomain.BasicCost.pp post.basic_operation_cost
+              ; hum_degree=
+                  Format.asprintf "%a" CostDomain.BasicCost.pp_degree post.basic_operation_cost }
           else None
         in
         let cost_item =
@@ -355,7 +357,7 @@ module JsonCostsPrinter = MakeJsonListPrinter (struct
           { Jsonbug_t.hash= compute_hash ~severity:"" ~bug_type:"" ~proc_name ~file ~qualifier:""
           ; loc= {file; lnum= loc.Location.line; cnum= loc.Location.col; enum= -1}
           ; procedure_id= procedure_id_of_procname proc_name
-          ; polynomial= CostDomain.BasicCost.encode post
+          ; polynomial= CostDomain.BasicCost.encode post.basic_operation_cost
           ; hum }
         in
         Some (Jsonbug_j.string_of_cost_item cost_item)

infer/src/checkers/cost.ml

@@ -72,7 +72,7 @@ module TransferFunctionsNodesBasicCost = struct
                 model inferbo_mem
             | None -> (
               match Payload.read pdesc callee_pname with
-              | Some {post= callee_cost} ->
+              | Some {post= {CostDomain.basic_operation_cost= callee_cost}} ->
                   if BasicCost.is_symbolic callee_cost then
                     instantiate_cost integer_type_widths ~inferbo_caller_mem:inferbo_mem
                       ~callee_pname ~params ~callee_cost
@@ -806,7 +806,7 @@ let checker {Callbacks.tenv; proc_desc; integer_type_widths; summary} : Summary.
         (Container.length ~fold:NodeCFG.fold_nodes node_cfg)
         BasicCost.pp exit_cost ;
       check_and_report_top_and_bottom exit_cost proc_desc summary ;
-      Payload.update_summary {post= exit_cost} summary
+      Payload.update_summary {post= {CostDomain.basic_operation_cost= exit_cost}} summary
   | None ->
       if Procdesc.Node.get_succs (Procdesc.get_start_node proc_desc) <> [] then (
         L.internal_error "Failed to compute final cost for function %a" Typ.Procname.pp

infer/src/checkers/costDomain.ml

@@ -12,6 +12,9 @@ module BasicCost = Polynomials.NonNegativePolynomial
 (** Map (node,instr) -> basic cost  *)
 module NodeInstructionToCostMap = AbstractDomain.MapOfPPMap (ProcCfg.InstrNode.IdMap) (BasicCost)
 
-type summary = {post: BasicCost.t}
+type cost_record = {basic_operation_cost: BasicCost.t}
 
-let pp_summary fmt {post} = F.fprintf fmt "@\n Post: %a @\n" BasicCost.pp post
+type summary = {post: cost_record}
+
+let pp_summary fmt {post} =
+  F.fprintf fmt "@\n Post: {basic_operatio_cost: %a} @\n" BasicCost.pp post.basic_operation_cost

infer/src/checkers/hoisting.ml

@@ -90,7 +90,7 @@ let get_issue_to_report tenv Call.({pname; node; params}) integer_type_widths in
     (* only report if function call has expensive/symbolic cost *)
     match Ondemand.analyze_proc_name pname with
     | Some {Summary.payloads= {Payloads.cost= Some {CostDomain.post= cost}}}
-      when CostDomain.BasicCost.is_symbolic cost ->
+      when CostDomain.BasicCost.is_symbolic cost.basic_operation_cost ->
         let instr_node_id = InstrCFG.last_of_underlying_node node |> InstrCFG.Node.id in
         let inferbo_invariant_map = Lazy.force inferbo_invariant_map in
         let inferbo_mem =
@@ -98,7 +98,7 @@ let get_issue_to_report tenv Call.({pname; node; params}) integer_type_widths in
         in
         (* get the cost of the function call *)
         Cost.instantiate_cost integer_type_widths ~inferbo_caller_mem:inferbo_mem
-          ~callee_pname:pname ~params ~callee_cost:cost
+          ~callee_pname:pname ~params ~callee_cost:cost.basic_operation_cost
         |> CostDomain.BasicCost.is_symbolic
     | _ ->
         false