[turbofan] use ZonePool in most places in the compiler pipeline a temp zone is used.

src/compiler/graph-builder.h

 // Copyright 2013 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_GRAPH_BUILDER_H_
 #define V8_COMPILER_GRAPH_BUILDER_H_
 
 #include "src/v8.h"
 
 #include "src/allocation.h"
@@ skipping 61 matching lines @@
  private:
   Graph* graph_;
 };
 
 
 // The StructuredGraphBuilder produces a high-level IR graph. It is used as the
 // base class for concrete implementations (e.g the AstGraphBuilder or the
 // StubGraphBuilder).
 class StructuredGraphBuilder : public GraphBuilder {
  public:
-  StructuredGraphBuilder(Graph* graph, CommonOperatorBuilder* common);
+  StructuredGraphBuilder(Zone* zone, Graph* graph,
+                         CommonOperatorBuilder* common);
   virtual ~StructuredGraphBuilder() {}
 
   // Creates a new Phi node having {count} input values.
   Node* NewPhi(int count, Node* input, Node* control);
   Node* NewEffectPhi(int count, Node* input, Node* control);
 
   // Helpers for merging control, effect or value dependencies.
   Node* MergeControl(Node* control, Node* other);
   Node* MergeEffect(Node* value, Node* other, Node* control);
   Node* MergeValue(Node* value, Node* other, Node* control);
@@ skipping 23 matching lines @@
 
   Node* current_context() const { return current_context_; }
   void set_current_context(Node* context) { current_context_ = context; }
 
   Node* exit_control() const { return exit_control_; }
   void set_exit_control(Node* node) { exit_control_ = node; }
 
   Node* dead_control();
 
   Zone* graph_zone() const { return graph()->zone(); }
-  Zone* local_zone() { return &local_zone_; }
+  Zone* local_zone() const { return local_zone_; }
   Isolate* isolate() const { return graph_zone()->isolate(); }
   CommonOperatorBuilder* common() const { return common_; }
 
   // Helper to wrap a Handle<T> into a Unique<T>.
   template <class T>
   Unique<T> MakeUnique(Handle<T> object) {
     return Unique<T>::CreateUninitialized(object);
   }
 
   // Support for control flow builders. The concrete type of the environment
   // depends on the graph builder, but environments themselves are not virtual.
   virtual Environment* CopyEnvironment(Environment* env);
 
   // Helper to indicate a node exits the function body.
   void UpdateControlDependencyToLeaveFunction(Node* exit);
 
  private:
   CommonOperatorBuilder* common_;
   Environment* environment_;
 
   // Zone local to the builder for data not leaking into the graph.
-  Zone local_zone_;
+  Zone* local_zone_;
 
   // Node representing the control dependency for dead code.
   SetOncePointer<Node> dead_control_;
 
   // Node representing the current context within the function body.
   Node* current_context_;
 
   // Merge of all control nodes that exit the function body.
   Node* exit_control_;
 
@@ skipping 64 matching lines @@
   StructuredGraphBuilder* builder_;
   Node* control_dependency_;
   Node* effect_dependency_;
   NodeVector values_;
 };
 }
 }
 }  // namespace v8::internal::compiler
 
 #endif  // V8_COMPILER_GRAPH_BUILDER_H__