Revert of [turbofan] extend escape analysis to reduce CheckMaps

src/compiler/escape-analysis.h

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_COMPILER_ESCAPE_ANALYSIS_H_
 #define V8_COMPILER_ESCAPE_ANALYSIS_H_
 
 #include "src/compiler/graph.h"
 #include "src/globals.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 // Forward declarations.
 class CommonOperatorBuilder;
 class EscapeStatusAnalysis;
 class MergeCache;
 class VirtualState;
 class VirtualObject;
 
 // EscapeObjectAnalysis simulates stores to determine values of loads if
 // an object is virtual and eliminated.
 class V8_EXPORT_PRIVATE EscapeAnalysis {
  public:
   EscapeAnalysis(Graph* graph, CommonOperatorBuilder* common, Zone* zone);
   ~EscapeAnalysis();
 
-  bool Run();
+  void Run();
 
   Node* GetReplacement(Node* node);
   bool IsVirtual(Node* node);
   bool IsEscaped(Node* node);
   bool CompareVirtualObjects(Node* left, Node* right);
   Node* GetOrCreateObjectState(Node* effect, Node* node);
   bool IsCyclicObjectState(Node* effect, Node* node);
   bool ExistsVirtualAllocate();
   bool SetReplacement(Node* node, Node* rep);
 
  private:
   void RunObjectAnalysis();
   bool Process(Node* node);
   void ProcessLoadField(Node* node);
   void ProcessStoreField(Node* node);
   void ProcessLoadElement(Node* node);
   void ProcessStoreElement(Node* node);
-  void ProcessCheckMaps(Node* node);
   void ProcessAllocationUsers(Node* node);
   void ProcessAllocation(Node* node);
   void ProcessFinishRegion(Node* node);
   void ProcessCall(Node* node);
   void ProcessStart(Node* node);
   bool ProcessEffectPhi(Node* node);
   void ProcessLoadFromPhi(int offset, Node* from, Node* node,
                           VirtualState* states);
 
   void ForwardVirtualState(Node* node);
@@ skipping 24 matching lines @@
   MergeCache* cache_;
 
   DISALLOW_COPY_AND_ASSIGN(EscapeAnalysis);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_ESCAPE_ANALYSIS_H_