[turbofan] Move context specialization into JSContextSpecializer.

src/compiler/ast-graph-builder.h

 // Copyright 2014 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_AST_GRAPH_BUILDER_H_
 #define V8_COMPILER_AST_GRAPH_BUILDER_H_
 
 #include "src/ast.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/liveness-analyzer.h"
@@ skipping 17 matching lines @@
 // underlying AST. The produced graph can either be compiled into a
 // stand-alone function or be wired into another graph for the purposes
 // of function inlining.
 class AstGraphBuilder : public AstVisitor {
  public:
   AstGraphBuilder(Zone* local_zone, CompilationInfo* info, JSGraph* jsgraph,
                   LoopAssignmentAnalysis* loop_assignment = NULL,
                   JSTypeFeedbackTable* js_type_feedback = NULL);
 
   // Creates a graph by visiting the entire AST.
-  bool CreateGraph(bool constant_context, bool stack_check = true);
+  bool CreateGraph(bool stack_check = true);
 
   // Helpers to create new control nodes.
   Node* NewIfTrue() { return NewNode(common()->IfTrue()); }
   Node* NewIfFalse() { return NewNode(common()->IfFalse()); }
   Node* NewMerge() { return NewNode(common()->Merge(1), true); }
   Node* NewLoop() { return NewNode(common()->Loop(1), true); }
   Node* NewBranch(Node* condition, BranchHint hint = BranchHint::kNone) {
     return NewNode(common()->Branch(hint), condition);
   }
 
@@ skipping 94 matching lines @@
   }
 
   void set_environment(Environment* env) { environment_ = env; }
   void set_ast_context(AstContext* ctx) { ast_context_ = ctx; }
   void set_execution_control(ControlScope* ctrl) { execution_control_ = ctrl; }
   void set_execution_context(ContextScope* ctx) { execution_context_ = ctx; }
 
   // Create the main graph body by visiting the AST.
   void CreateGraphBody(bool stack_check);
 
-  // Create the node that represents the outer context of the function.
-  void CreateFunctionContext(bool constant_context);
-
   // Get or create the node that represents the outer function closure.
   Node* GetFunctionClosureForContext();
   Node* GetFunctionClosure();
 
+  // Get or create the node that represents the outer context of the function.
+  Node* GetFunctionContext();
+
   // Node creation helpers.
   Node* NewNode(const Operator* op, bool incomplete = false) {
     return MakeNode(op, 0, static_cast<Node**>(NULL), incomplete);
   }
 
   Node* NewNode(const Operator* op, Node* n1) {
     return MakeNode(op, 1, &n1, false);
   }
 
   Node* NewNode(const Operator* op, Node* n1, Node* n2) {
@@ skipping 25 matching lines @@
 
   Node* NewNode(const Operator* op, int value_input_count, Node** value_inputs,
                 bool incomplete = false) {
     return MakeNode(op, value_input_count, value_inputs, incomplete);
   }
 
   // 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);
 
-  Node* NewOuterContextParam();
-  Node* NewCurrentContextOsrValue();
-
   // 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);
 
   // The main node creation chokepoint. Adds context, frame state, effect,
   // and control dependencies depending on the operator.
   Node* MakeNode(const Operator* op, int value_input_count, Node** value_inputs,
                  bool incomplete);
 
@@ skipping 330 matching lines @@
 
   // Prepare environment to be used as loop header.
   void PrepareForLoop(BitVector* assigned, bool is_osr = false);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_AST_GRAPH_BUILDER_H_