[closure] Substitute closure parameter when given via variable

Summary:
This diff substitutes closure parameter when it is given via variable.  For example,

```
x = ^{ ... }
foo(x)
```

this diff substitutes the closure variable `x`,

```
x = ^{ ... }
foo(^{ ... })
```

so that the specialization of `foo` can be done by `CCallSpecializaedWithClosures.process`.

Reviewed By: jvillard

Differential Revision: D23814595

fbshipit-source-id: a89f1530f

infer/src/IR/Cfg.ml

@@ -61,3 +61,6 @@ let pp_proc_signatures fmt cfg =
   F.fprintf fmt "@[<v>METHOD SIGNATURES@;" ;
   iter_over_sorted_procs ~f:(Procdesc.pp_signature fmt) cfg ;
   F.fprintf fmt "@]"
+
+
+let mem = Procname.Hash.mem

infer/src/IR/Cfg.mli

@@ -20,6 +20,8 @@ val store : SourceFile.t -> t -> unit
 (** Save the individual [Procdesc.t] and [ProcAttributes.t] to the database for the procedures in
     the cfg. *)
 
+val mem : t -> Procname.t -> bool
+
 (** {2 Functions for manipulating an interprocedural CFG} *)
 
 val create : unit -> t

infer/src/IR/Exp.ml

@@ -225,12 +225,8 @@ let rec pp_ pe pp_t f e =
       F.fprintf f "(%a %s %a)" pp_exp e1 (Binop.str pe op) pp_exp e2
   | Exn e ->
       F.fprintf f "EXN %a" pp_exp e
-  | Closure {name; captured_vars} ->
-      if List.is_empty captured_vars then F.fprintf f "(%a)" pp_exp (Const (Cfun name))
-      else
-        F.fprintf f "(%a,%a)" pp_exp (Const (Cfun name))
-          (Pp.comma_seq (pp_captured_var pe pp_t))
-          captured_vars
+  | Closure closure ->
+      pp_closure_ pe pp_t f closure
   | Lvar pv ->
       Pvar.pp pe f pv
   | Lfield (e, fld, _) ->
@@ -259,6 +255,15 @@ and pp_captured_var pe pp_t f (exp, var, typ, mode) =
         (pp_ pe pp_t) exp (Pvar.pp pe) var (Typ.pp pe) typ
 
 
+and pp_closure_ pe pp_t f {name; captured_vars} =
+  let pp_exp = pp_ pe pp_t in
+  if List.is_empty captured_vars then F.fprintf f "(%a)" pp_exp (Const (Cfun name))
+  else
+    F.fprintf f "(%a,%a)" pp_exp (Const (Cfun name))
+      (Pp.comma_seq (pp_captured_var pe pp_t))
+      captured_vars
+
+
 let pp_printenv ~print_types pe f e =
   let pp_typ = if print_types then Typ.pp_full else Typ.pp in
   pp_ pe (pp_typ pe) f e
@@ -266,6 +271,8 @@ let pp_printenv ~print_types pe f e =
 
 let pp f e = pp_printenv ~print_types:false Pp.text f e
 
+let pp_closure = pp_closure_ Pp.text (Typ.pp Pp.text)
+
 let to_string e = F.asprintf "%a" pp e
 
 let color_wrapper ~f = if Config.print_using_diff then Pp.color_wrapper ~f else f

infer/src/IR/Exp.mli

@@ -142,6 +142,8 @@ val pp_diff : ?print_types:bool -> Pp.env -> F.formatter -> t -> unit
 
 val pp : F.formatter -> t -> unit
 
+val pp_closure : F.formatter -> closure -> unit
+
 val to_string : t -> string
 
 val d_exp : t -> unit

infer/src/backend/ClosuresSubstitution.ml

@@ -83,9 +83,9 @@ let get_invariant_at_node (map : Analyzer.invariant_map) node : Domain.t =
       Domain.bottom
 
 
-let replace_instr node (astate : Domain.t) (instr : Sil.instr) : Sil.instr =
+let replace_closure_call node (astate : Domain.t) (instr : Sil.instr) : Sil.instr =
   let kind = `ExecNode in
-  let pp_name fmt = Format.pp_print_string fmt "Closure Substitution" in
+  let pp_name fmt = Format.pp_print_string fmt "Closure Call Substitution" in
   NodePrinter.with_session (CFG.Node.underlying_node node) ~kind ~pp_name ~f:(fun () ->
       match instr with
       | Call (ret_id_typ, Var id, actual_params, loc, call_flags) -> (
@@ -110,8 +110,39 @@ let replace_instr node (astate : Domain.t) (instr : Sil.instr) : Sil.instr =
           instr )
 
 
-let process summary =
-  let pdesc = Summary.get_proc_desc summary in
+(** [replace_closure_param] propagates closures to function parameters, so that more functions are
+    specialized by [CCallSpecializedWithClosures.process]. Note that unlike [replace_closure_call]
+    running at the analysis phase, [replace_closure_param] should run before
+    [CCallSpecializedWithClosures.process] at the capture phase. *)
+let replace_closure_param node (astate : Domain.t) (instr : Sil.instr) : Sil.instr =
+  let kind = `ExecNode in
+  let pp_name fmt = Format.pp_print_string fmt "Closure Param Substitution" in
+  let replace () =
+    match instr with
+    | Sil.Call (ret, func, actual_params, loc, flags) ->
+        let modified = ref false in
+        let replace_param ((exp, typ) as param) =
+          match exp with
+          | Exp.Closure _ ->
+              param
+          | _ -> (
+            match VDom.get (eval_expr astate exp) with
+            | None ->
+                param
+            | Some c ->
+                L.d_printfln "found closure %a for parameter %a\n" Exp.pp_closure c Exp.pp exp ;
+                modified := true ;
+                (Exp.Closure c, typ) )
+        in
+        let actual_params' = List.map actual_params ~f:replace_param in
+        if !modified then Sil.Call (ret, func, actual_params', loc, flags) else instr
+    | _ ->
+        instr
+  in
+  NodePrinter.with_session (CFG.Node.underlying_node node) ~kind ~pp_name ~f:replace
+
+
+let process_common replace_instr pdesc =
   let node_cfg = CFG.from_pdesc pdesc in
   let map = Analyzer.exec_cfg node_cfg ~initial:Domain.empty () in
   let update_context = eval_instr in
@@ -120,3 +151,11 @@ let process summary =
     Procdesc.replace_instrs_using_context pdesc ~f:replace_instr ~update_context ~context_at_node
   in
   ()
+
+
+let process_closure_call summary =
+  let pdesc = Summary.get_proc_desc summary in
+  process_common replace_closure_call pdesc
+
+
+let process_closure_param pdesc = process_common replace_closure_param pdesc

infer/src/backend/preanal.ml

@@ -375,7 +375,7 @@ let do_preanalysis exe_env pdesc =
     FunctionPointers.substitute pdesc ;
   (* NOTE: It is important that this preanalysis stays before Liveness *)
   if not (Procname.is_java proc_name) then (
-    ClosuresSubstitution.process summary ;
+    ClosuresSubstitution.process_closure_call summary ;
     ClosureSubstSpecializedMethod.process summary ) ;
   Liveness.process summary tenv ;
   AddAbstractionInstructions.process pdesc ;

infer/src/clang/CCallSpecializedWithClosures.ml

@@ -163,6 +163,14 @@ let replace_with_specialize_methods cfg _node instr =
               ; method_annotation= {annot with params= new_annots}
               ; proc_name= specialized_pname }
             in
+            (* To avoid duplicated additions on a specialized procname, it does a membership check.
+               This may happen when there are multiple function calls with the same callees and the
+               same closure parameters.  For the following additions, we can simply ignore them,
+               because the function bodies of the same procname must be the same.
+
+               Here, it adds an empty procdesc temporarily.  The function body will be filled later
+               by [ClosureSubstSpecializedMethod]. *)
+            if not (Cfg.mem cfg specialized_pname) then
               Cfg.create_proc_desc cfg new_attributes |> ignore ;
             Sil.Call (ret, Exp.Const (Const.Cfun specialized_pname), new_actuals, loc, flags)
         | None ->
@@ -175,6 +183,7 @@ let replace_with_specialize_methods cfg _node instr =
 
 let process cfg =
   let process_pdesc _proc_name proc_desc =
+    ClosuresSubstitution.process_closure_param proc_desc ;
     Procdesc.replace_instrs proc_desc ~f:(replace_with_specialize_methods cfg) |> ignore
   in
   Procname.Hash.iter process_pdesc cfg

infer/tests/codetoanalyze/objc/autoreleasepool/arc_block.m

@@ -20,4 +20,13 @@
   }];
 }
 
++ (void)callIndexOfObjectPassingTest_param_linear:(NSArray*)x {
+  BOOL (^b)(NSObject*, NSUInteger, BOOL*) =
+      ^BOOL(NSObject* obj, NSUInteger idx, BOOL* stop) {
+        NoArcCallee* o = [NoArcCallee giveMeObject];
+        return false;
+      };
+  int i = [x indexOfObjectPassingTest:b];
+}
+
 @end

infer/tests/codetoanalyze/objc/autoreleasepool/cost-issues.exp

@@ -1,7 +1,10 @@
 ${XCODE_ISYSROOT}/System/Library/Frameworks/Foundation.framework/Headers/NSArray.h, NSArray.indexOfObjectPassingTest:[objc_blockArcBlock.callIndexOfObjectPassingTest_linear:_1], 0,  OnUIThread:false, []
+${XCODE_ISYSROOT}/System/Library/Frameworks/Foundation.framework/Headers/NSArray.h, NSArray.indexOfObjectPassingTest:[objc_blockArcBlock.callIndexOfObjectPassingTest_param_linear:_2], 0,  OnUIThread:false, []
 codetoanalyze/objc/autoreleasepool/arc_block.m, ArcBlock.callIndexOfObjectPassingTest_linear:, x->elements.length.ub,  OnUIThread:false, [{x->elements.length.ub},Modeled call to indexOfObjectPassingTest:,autorelease,Call to NoArcCallee.giveMeObject,Modeled call to NSObject.autorelease]
+codetoanalyze/objc/autoreleasepool/arc_block.m, ArcBlock.callIndexOfObjectPassingTest_param_linear:, x->elements.length.ub,  OnUIThread:false, [{x->elements.length.ub},Modeled call to indexOfObjectPassingTest:,autorelease,Call to NoArcCallee.giveMeObject,Modeled call to NSObject.autorelease]
 codetoanalyze/objc/autoreleasepool/arc_block.m, ArcBlock.dealloc, 0,  OnUIThread:false, []
 codetoanalyze/objc/autoreleasepool/arc_block.m, objc_blockArcBlock.callIndexOfObjectPassingTest_linear:_1, 1,  OnUIThread:false, [autorelease,Call to NoArcCallee.giveMeObject,Modeled call to NSObject.autorelease]
+codetoanalyze/objc/autoreleasepool/arc_block.m, objc_blockArcBlock.callIndexOfObjectPassingTest_param_linear:_2, 1,  OnUIThread:false, [autorelease,Call to NoArcCallee.giveMeObject,Modeled call to NSObject.autorelease]
 codetoanalyze/objc/autoreleasepool/arc_callee.m, ArcCallee.allocObject, 0,  OnUIThread:false, []
 codetoanalyze/objc/autoreleasepool/arc_callee.m, ArcCallee.copyObject:, 0,  OnUIThread:false, []
 codetoanalyze/objc/autoreleasepool/arc_callee.m, ArcCallee.dealloc, 0,  OnUIThread:false, []

infer/tests/codetoanalyze/objc/biabduction/issues.exp

@@ -106,5 +106,5 @@ codetoanalyze/objc/shared/annotations/nonnull_annotations.m, NonnullAnnot.test3:
 codetoanalyze/objc/shared/annotations/nullable_annotations.m, User.otherUserName, 2, NULL_DEREFERENCE, B2, ERROR, [start of procedure otherUserName,Skipping otherUser: method has no implementation]
 codetoanalyze/objc/shared/annotations/nullable_annotations.m, npe_property_nullable, 3, NULL_DEREFERENCE, B1, ERROR, [start of procedure npe_property_nullable(),Skipping child: method has no implementation]
 codetoanalyze/objc/shared/annotations/nullable_annotations_fields.m, A.nullable_field, 3, NULL_DEREFERENCE, B1, ERROR, [start of procedure nullable_field,Skipping getA(): method has no implementation]
-codetoanalyze/objc/shared/block/dispatch.m, DispatchA.dispatch_a_block_variable_from_macro_delivers_initialised_object, 3, DIVIDE_BY_ZERO, no_bucket, ERROR, [start of procedure dispatch_a_block_variable_from_macro_delivers_initialised_object,start of procedure dispatch_a_block_variable_from_macro,Skipping _dispatch_once(): method has no implementation,return from a call to DispatchA.dispatch_a_block_variable_from_macro]
+codetoanalyze/objc/shared/block/dispatch.m, DispatchA.dispatch_a_block_variable_from_macro_delivers_initialised_object, 3, DIVIDE_BY_ZERO, no_bucket, ERROR, [start of procedure dispatch_a_block_variable_from_macro_delivers_initialised_object,start of procedure dispatch_a_block_variable_from_macro,start of procedure block,start of procedure init,return from a call to DispatchA.init,return from a call to objc_blockDispatchA.dispatch_a_block_variable_from_macro_5,return from a call to DispatchA.dispatch_a_block_variable_from_macro]
 codetoanalyze/objc/shared/npe/Available_expr.m, Available_expr.test_no_bug, 3, NULL_DEREFERENCE, B1, ERROR, [start of procedure test_no_bug,Taking true branch]

infer/tests/codetoanalyze/objc/frontend/block/specialized_method_with_block_params.m

@@ -47,4 +47,13 @@ foo(_Nullable MyBlock my_block1, _Nullable MyBlock my_block2, _Nonnull A* a) {
   return self->x;
 }
 
+- (int)call_foo_with_same_param {
+  void (^b)(int) = ^(int i) {
+    self->x = 5;
+  };
+  foo(b, b, self);
+  foo(b, b, self);
+  return self->x;
+}
+
 @end

infer/tests/codetoanalyze/objc/frontend/block/specialized_method_with_block_params.m.dot

@@ -66,6 +66,17 @@ digraph cfg {
 	
 
 	 "objc_blockA.bar:_2(class A).714c02790d023adc163c946a9f0220cd_3" -> "objc_blockA.bar:_2(class A).714c02790d023adc163c946a9f0220cd_2" ;
+"objc_blockA.call_foo_with_same_param_5(class A).03c7f776ebd8253258577359808dec16_1" [label="1: Start objc_blockA.call_foo_with_same_param_5\nFormals:  self:A* i:int\nLocals: \nCaptured:  [by ref]self:A* \n  " color=yellow style=filled]
+	
+
+	 "objc_blockA.call_foo_with_same_param_5(class A).03c7f776ebd8253258577359808dec16_1" -> "objc_blockA.call_foo_with_same_param_5(class A).03c7f776ebd8253258577359808dec16_3" ;
+"objc_blockA.call_foo_with_same_param_5(class A).03c7f776ebd8253258577359808dec16_2" [label="2: Exit objc_blockA.call_foo_with_same_param_5 \n  " color=yellow style=filled]
+	
+
+"objc_blockA.call_foo_with_same_param_5(class A).03c7f776ebd8253258577359808dec16_3" [label="3:  BinaryOperatorStmt: Assign \n   n$31=*&self:A* [line 52, column 5]\n  *n$31.x:int=5 [line 52, column 5]\n " shape="box"]
+	
+
+	 "objc_blockA.call_foo_with_same_param_5(class A).03c7f776ebd8253258577359808dec16_3" -> "objc_blockA.call_foo_with_same_param_5(class A).03c7f776ebd8253258577359808dec16_2" ;
 "bar2#A#instance.413fa5106d6a23f2bf18df99659efb82_1" [label="1: Start A.bar2\nFormals:  self:A*\nLocals:  \n  " color=yellow style=filled]
 	
 
@@ -104,6 +115,29 @@ digraph cfg {
 	
 
 	 "bar:#A(class A)#instance.3e4a860660eb436d473f8ceeb9c1a72b_6" -> "bar:#A(class A)#instance.3e4a860660eb436d473f8ceeb9c1a72b_5" ;
+"call_foo_with_same_param#A#instance.7f01b1476c1662f7ce825ec7b1739a00_1" [label="1: Start A.call_foo_with_same_param\nFormals:  self:A*\nLocals:  b:_fn_(*) \n  " color=yellow style=filled]
+	
+
+	 "call_foo_with_same_param#A#instance.7f01b1476c1662f7ce825ec7b1739a00_1" -> "call_foo_with_same_param#A#instance.7f01b1476c1662f7ce825ec7b1739a00_6" ;
+"call_foo_with_same_param#A#instance.7f01b1476c1662f7ce825ec7b1739a00_2" [label="2: Exit A.call_foo_with_same_param \n  " color=yellow style=filled]
+	
+
+"call_foo_with_same_param#A#instance.7f01b1476c1662f7ce825ec7b1739a00_3" [label="3:  Return Stmt \n   n$20=*&self:A* [line 56, column 10]\n  n$21=*n$20.x:int [line 56, column 10]\n  *&return:int=n$21 [line 56, column 3]\n " shape="box"]
+	
+
+	 "call_foo_with_same_param#A#instance.7f01b1476c1662f7ce825ec7b1739a00_3" -> "call_foo_with_same_param#A#instance.7f01b1476c1662f7ce825ec7b1739a00_2" ;
+"call_foo_with_same_param#A#instance.7f01b1476c1662f7ce825ec7b1739a00_4" [label="4:  Call _fun_foo \n   n$22=*&b:_fn_(*) [line 55, column 7]\n  n$23=*&b:_fn_(*) [line 55, column 10]\n  n$24=*&self:A* [line 55, column 13]\n  n$25=_fun_foo[objc_blockA.call_foo_with_same_param_5^objc_blockA.call_foo_with_same_param_5](n$30:A*,n$24:A*) [line 55, column 3]\n " shape="box"]
+	
+
+	 "call_foo_with_same_param#A#instance.7f01b1476c1662f7ce825ec7b1739a00_4" -> "call_foo_with_same_param#A#instance.7f01b1476c1662f7ce825ec7b1739a00_3" ;
+"call_foo_with_same_param#A#instance.7f01b1476c1662f7ce825ec7b1739a00_5" [label="5:  Call _fun_foo \n   n$26=*&b:_fn_(*) [line 54, column 7]\n  n$27=*&b:_fn_(*) [line 54, column 10]\n  n$28=*&self:A* [line 54, column 13]\n  n$29=_fun_foo[objc_blockA.call_foo_with_same_param_5^objc_blockA.call_foo_with_same_param_5](n$30:A*,n$28:A*) [line 54, column 3]\n " shape="box"]
+	
+
+	 "call_foo_with_same_param#A#instance.7f01b1476c1662f7ce825ec7b1739a00_5" -> "call_foo_with_same_param#A#instance.7f01b1476c1662f7ce825ec7b1739a00_4" ;
+"call_foo_with_same_param#A#instance.7f01b1476c1662f7ce825ec7b1739a00_6" [label="6:  DeclStmt \n   VARIABLE_DECLARED(b:_fn_(*)); [line 51, column 3]\n  n$30=*&self:A* [line 51, column 20]\n  *&b:_fn_(*)=(_fun_objc_blockA.call_foo_with_same_param_5,([by ref]n$30 &self:A*)) [line 51, column 3]\n " shape="box"]
+	
+
+	 "call_foo_with_same_param#A#instance.7f01b1476c1662f7ce825ec7b1739a00_6" -> "call_foo_with_same_param#A#instance.7f01b1476c1662f7ce825ec7b1739a00_5" ;
 "dealloc#A#instance.55ac864e91dcd5d484e8ab7d8eb94fcb_1" [label="1: Start A.dealloc\nFormals:  self:A*\nLocals:  \n  " color=yellow style=filled]
 	
 

infer/tests/codetoanalyze/objc/performance/block.m

@@ -26,7 +26,7 @@ void loop_linear(int x) {
 
 void runBlockA(BlockA block) { block(); }
 
-void doBlockA_linear_FN(int a) {
+void doBlockA_linear(int a) {
   BlockA block = ^{
     loop_linear(a);
   };

infer/tests/codetoanalyze/objc/performance/cost-issues.exp

@@ -85,13 +85,14 @@ codetoanalyze/objc/performance/araii.m, Araii.setBuffer:, 4,  OnUIThread:false,
 codetoanalyze/objc/performance/araii.m, memory_leak_raii_main, 18,  OnUIThread:false, []
 codetoanalyze/objc/performance/block.m, block_multiply_array_linear, 13 + 5 ⋅ array->elements.length.ub + 4 ⋅ (array->elements.length.ub + 1),  OnUIThread:false, [{array->elements.length.ub + 1},Call to objc_blockblock_multiply_array_linear_1,Loop,{array->elements.length.ub},Call to objc_blockblock_multiply_array_linear_1,Loop]
 codetoanalyze/objc/performance/block.m, doBlockA_direct_block_linear, 10 + 3 ⋅ a + 2 ⋅ (1+max(0, a)),  OnUIThread:false, [{1+max(0, a)},Call to runBlockA[objc_blockdoBlockA_direct_block_linear_3],Call to objc_blockdoBlockA_direct_block_linear_3,Call to loop_linear,Loop,{a},Call to runBlockA[objc_blockdoBlockA_direct_block_linear_3],Call to objc_blockdoBlockA_direct_block_linear_3,Call to loop_linear,Loop]
-codetoanalyze/objc/performance/block.m, doBlockA_linear_FN, 7,  OnUIThread:false, []
+codetoanalyze/objc/performance/block.m, doBlockA_linear, 12 + 3 ⋅ a + 2 ⋅ (1+max(0, a)),  OnUIThread:false, [{1+max(0, a)},Call to runBlockA[objc_blockdoBlockA_linear_2],Call to objc_blockdoBlockA_linear_2,Call to loop_linear,Loop,{a},Call to runBlockA[objc_blockdoBlockA_linear_2],Call to objc_blockdoBlockA_linear_2,Call to loop_linear,Loop]
 codetoanalyze/objc/performance/block.m, loop_linear, 3 + 3 ⋅ x + 2 ⋅ (1+max(0, x)),  OnUIThread:false, [{1+max(0, x)},Loop,{x},Loop]
 codetoanalyze/objc/performance/block.m, objc_blockblock_multiply_array_linear_1, 8 + 5 ⋅ array->elements.length.ub + 4 ⋅ (array->elements.length.ub + 1),  OnUIThread:false, [{array->elements.length.ub + 1},Loop,{array->elements.length.ub},Loop]
 codetoanalyze/objc/performance/block.m, objc_blockdoBlockA_direct_block_linear_3, 5 + 3 ⋅ a + 2 ⋅ (1+max(0, a)),  OnUIThread:false, [{1+max(0, a)},Call to loop_linear,Loop,{a},Call to loop_linear,Loop]
-codetoanalyze/objc/performance/block.m, objc_blockdoBlockA_linear_FN_2, 5 + 3 ⋅ a + 2 ⋅ (1+max(0, a)),  OnUIThread:false, [{1+max(0, a)},Call to loop_linear,Loop,{a},Call to loop_linear,Loop]
+codetoanalyze/objc/performance/block.m, objc_blockdoBlockA_linear_2, 5 + 3 ⋅ a + 2 ⋅ (1+max(0, a)),  OnUIThread:false, [{1+max(0, a)},Call to loop_linear,Loop,{a},Call to loop_linear,Loop]
 codetoanalyze/objc/performance/block.m, runBlockA, 3,  OnUIThread:false, []
 codetoanalyze/objc/performance/block.m, runBlockA[objc_blockdoBlockA_direct_block_linear_3], 8 + 3 ⋅ a[doBlockA_direct_block_linear()] + 2 ⋅ (1+max(0, a[doBlockA_direct_block_linear()])),  OnUIThread:false, [{1+max(0, a[doBlockA_direct_block_linear()])},Call to objc_blockdoBlockA_direct_block_linear_3,Call to loop_linear,Loop,{a[doBlockA_direct_block_linear()]},Call to objc_blockdoBlockA_direct_block_linear_3,Call to loop_linear,Loop]
+codetoanalyze/objc/performance/block.m, runBlockA[objc_blockdoBlockA_linear_2], 8 + 3 ⋅ a[doBlockA_linear()] + 2 ⋅ (1+max(0, a[doBlockA_linear()])),  OnUIThread:false, [{1+max(0, a[doBlockA_linear()])},Call to objc_blockdoBlockA_linear_2,Call to loop_linear,Loop,{a[doBlockA_linear()]},Call to objc_blockdoBlockA_linear_2,Call to loop_linear,Loop]
 codetoanalyze/objc/performance/break.m, break_constant_FP, 8 + 5 ⋅ p + 2 ⋅ (1+max(0, p)),  OnUIThread:false, [{1+max(0, p)},Call to break_loop,Loop,{p},Call to break_loop,Loop]
 codetoanalyze/objc/performance/break.m, break_loop, 5 + 5 ⋅ p + 2 ⋅ (1+max(0, p)),  OnUIThread:false, [{1+max(0, p)},Loop,{p},Loop]
 codetoanalyze/objc/performance/break.m, break_loop_with_t, 7 + 5 ⋅ p + 2 ⋅ (1+max(0, p)),  OnUIThread:false, [{1+max(0, p)},Loop,{p},Loop]

infer/tests/codetoanalyze/objc/shared/block/dispatch.m.dot

@@ -129,7 +129,7 @@ digraph cfg {
 	
 
 	 "dispatch_a_block_variable#DispatchA#class.3cc12dd22127281b8293b7c046d21bb2_3" -> "dispatch_a_block_variable#DispatchA#class.3cc12dd22127281b8293b7c046d21bb2_2" ;
-"dispatch_a_block_variable#DispatchA#class.3cc12dd22127281b8293b7c046d21bb2_4" [label="4:  Call _fun__dispatch_once \n   n$18=*&initialization_block__:_fn_(*) [line 58, column 32]\n  n$19=_fun__dispatch_once(&#GB<codetoanalyze/objc/shared/block/dispatch.m>$DispatchA.dispatch_a_block_variable.once_token__:long*,n$18:_fn_(*)) [line 58, column 3]\n " shape="box"]
+"dispatch_a_block_variable#DispatchA#class.3cc12dd22127281b8293b7c046d21bb2_4" [label="4:  Call _fun__dispatch_once \n   n$18=*&initialization_block__:_fn_(*) [line 58, column 32]\n  n$19=_fun__dispatch_once(&#GB<codetoanalyze/objc/shared/block/dispatch.m>$DispatchA.dispatch_a_block_variable.once_token__:long*,(_fun_objc_blockDispatchA.dispatch_a_block_variable_4):_fn_(*)) [line 58, column 3]\n " shape="box"]
 	
 
 	 "dispatch_a_block_variable#DispatchA#class.3cc12dd22127281b8293b7c046d21bb2_4" -> "dispatch_a_block_variable#DispatchA#class.3cc12dd22127281b8293b7c046d21bb2_3" ;
@@ -148,7 +148,7 @@ digraph cfg {
 	
 
 	 "dispatch_a_block_variable_from_macro#DispatchA#class.92567a38d5ab3cf637f72030b1097441_3" -> "dispatch_a_block_variable_from_macro#DispatchA#class.92567a38d5ab3cf637f72030b1097441_6" ;
-"dispatch_a_block_variable_from_macro#DispatchA#class.92567a38d5ab3cf637f72030b1097441_4" [label="4:  Call _fun__dispatch_once \n   n$23=*&initialization_block__:_fn_(*) [line 69, column 34]\n  n$24=_fun__dispatch_once(&#GB<codetoanalyze/objc/shared/block/dispatch.m>$DispatchA.dispatch_a_block_variable_from_macro.once_token__:long*,n$23:_fn_(*)) [line 69, column 5]\n " shape="box"]
+"dispatch_a_block_variable_from_macro#DispatchA#class.92567a38d5ab3cf637f72030b1097441_4" [label="4:  Call _fun__dispatch_once \n   n$23=*&initialization_block__:_fn_(*) [line 69, column 34]\n  n$24=_fun__dispatch_once(&#GB<codetoanalyze/objc/shared/block/dispatch.m>$DispatchA.dispatch_a_block_variable_from_macro.once_token__:long*,(_fun_objc_blockDispatchA.dispatch_a_block_variable_from_macro_5):_fn_(*)) [line 69, column 5]\n " shape="box"]
 	
 
 	 "dispatch_a_block_variable_from_macro#DispatchA#class.92567a38d5ab3cf637f72030b1097441_4" -> "dispatch_a_block_variable_from_macro#DispatchA#class.92567a38d5ab3cf637f72030b1097441_3" ;