[turbofan] Run inlining within the regular reducer fixpoint.

src/compiler/js-inlining-heuristic.h

Index: src/compiler/js-inlining-heuristic.h
diff --git a/src/compiler/js-inlining-heuristic.h b/src/compiler/js-inlining-heuristic.h
index c6f04be0455521243b812c11b5412968064e9e8e..7f577475bf46f02d218a91a0ff7a48c6c861b5b2 100644
--- a/src/compiler/js-inlining-heuristic.h
+++ b/src/compiler/js-inlining-heuristic.h
@@ -18,17 +18,16 @@ class JSInliningHeuristic final : public AdvancedReducer {
                       CompilationInfo* info, JSGraph* jsgraph)
       : AdvancedReducer(editor),
         mode_(mode),
-        local_zone_(local_zone),
-        jsgraph_(jsgraph),
         inliner_(editor, local_zone, info, jsgraph),
         candidates_(local_zone),
+        seen_(local_zone),
         info_(info) {}
 
   Reduction Reduce(Node* node) final;
 
   // Processes the list of candidates gathered while the reducer was running,
   // and inlines call sites that the heuristic determines to be important.
-  void ProcessCandidates();
+  void Finalize() final;
 
  private:
   struct Candidate {
@@ -49,11 +48,11 @@ class JSInliningHeuristic final : public AdvancedReducer {
   void PrintCandidates();
 
   Mode const mode_;
-  Zone* local_zone_;
-  JSGraph* jsgraph_;
   JSInliner inliner_;
   Candidates candidates_;
+  ZoneSet<NodeId> seen_;
   CompilationInfo* info_;
+  int cumulative_count_ = 0;
 };
 
 }  // namespace compiler