[Interpreter] Adds implementation of bytecode graph builder for LoadICSloppy/Strict

src/compiler/bytecode-graph-builder.h

Index: src/compiler/bytecode-graph-builder.h
diff --git a/src/compiler/bytecode-graph-builder.h b/src/compiler/bytecode-graph-builder.h
index 4e479ba3e64f79b2b3c276ca5284dc3025549de3..f60bd8648bd2858224e920f572c8b1dd9a845946 100644
--- a/src/compiler/bytecode-graph-builder.h
+++ b/src/compiler/bytecode-graph-builder.h
@@ -28,14 +28,35 @@ class BytecodeGraphBuilder {
 
  private:
   class Environment;
+  class FrameStateBeforeAndAfter;
 
   void CreateGraphBody(bool stack_check);
   void VisitBytecodes();
 
   Node* LoadAccumulator(Node* value);
 
+  // Get or create the node that represents the outer function closure.
+  Node* GetFunctionClosure();
+
+  // Get or create the node that represents the outer function context.
   Node* GetFunctionContext();
 
+  // Builders for accessing a (potentially immutable) object field.
+  Node* BuildLoadImmutableObjectField(Node* object, int offset);
+  Node* BuildLoadObjectField(Node* object, int offset);
+
+  // Builders for accessing the function context.
+  Node* BuildLoadFeedbackVector();
+
+  // Helper function for creating a pair of feedback vector and slot.
+  // Named and keyed loads require a VectorSlotPair for successful lowering.
+  VectorSlotPair CreateVectorSlotPair(FeedbackVectorSlot slot);
+
+  // Builds deoptimization for a given node.
+  // TODO(mythria) Current implementation introduces empty frames. Replace
+  // them with actual frame states.
+  void PrepareFrameState(Node* node);
+
   void set_environment(Environment* env) { environment_ = env; }
   const Environment* environment() const { return environment_; }
   Environment* environment() { return environment_; }
@@ -55,6 +76,11 @@ class BytecodeGraphBuilder {
     return MakeNode(op, arraysize(buffer), buffer, false);
   }
 
+  Node* NewNode(const Operator* op, Node* n1, Node* n2, Node* n3) {
+    Node* buffer[] = {n1, n2, n3};
+    return MakeNode(op, arraysize(buffer), buffer, false);
+  }
+
   Node* MakeNode(const Operator* op, int value_input_count, Node** value_inputs,
                  bool incomplete);
 
@@ -104,6 +130,10 @@ class BytecodeGraphBuilder {
 
   // Nodes representing values in the activation record.
   SetOncePointer<Node> function_context_;
+  SetOncePointer<Node> function_closure_;
+
+  // Optimization to cache loaded feedback vector.
+  SetOncePointer<Node> feedback_vector_;
 
   // Control nodes that exit the function body.
   ZoneVector<Node*> exit_controls_;