[turbofan] Memory improvements for escape analysis

src/compiler/escape-analysis-reducer.h

Index: src/compiler/escape-analysis-reducer.h
diff --git a/src/compiler/escape-analysis-reducer.h b/src/compiler/escape-analysis-reducer.h
index 19470cbefbd621b091557a406596b8a5926350b0..12487b1dcf5cda96dc47b2f7c8e172f0670e02ae 100644
--- a/src/compiler/escape-analysis-reducer.h
+++ b/src/compiler/escape-analysis-reducer.h
@@ -32,6 +32,7 @@ class EscapeAnalysisReducer final : public AdvancedReducer {
   void SetExistsVirtualAllocate(bool exists) {
     exists_virtual_allocate_ = exists;
   }
+  void VerifyReplacement() const;
 
  private:
   Reduction ReduceLoad(Node* node);
@@ -56,7 +57,7 @@ class EscapeAnalysisReducer final : public AdvancedReducer {
   Zone* const zone_;
   // _visited marks nodes we already processed (allocs, loads, stores)
   // and nodes that do not need a visit from ReduceDeoptState etc.
-  BitVector visited_;
+  BitVector fully_reduced_;
   bool exists_virtual_allocate_;
 
   DISALLOW_COPY_AND_ASSIGN(EscapeAnalysisReducer);