[turbofan] Switch passing of new.target to register.

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 69 matching lines @@
 
   // Stack of control scopes currently entered by the visitor.
   ControlScope* execution_control_;
 
   // Stack of context objects pushed onto the chain by the visitor.
   ContextScope* execution_context_;
 
   // Nodes representing values in the activation record.
   SetOncePointer<Node> function_closure_;
   SetOncePointer<Node> function_context_;
+  SetOncePointer<Node> new_target_;
 
   // Tracks how many try-blocks are currently entered.
   int try_catch_nesting_level_;
   int try_nesting_level_;
 
   // Temporary storage for building node input lists.
   int input_buffer_size_;
   Node** input_buffer_;
 
   // Optimization to cache loaded feedback vector.
@@ skipping 40 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);
 
-  // Get or create the node that represents the outer function closure.
+  // Get or create the node that represents the incoming function closure.
   Node* GetFunctionClosureForContext();
   Node* GetFunctionClosure();
 
-  // Get or create the node that represents the outer function context.
+  // Get or create the node that represents the incoming function context.
   Node* GetFunctionContext();
 
+  // Get or create the node that represents the incoming new target value.
+  Node* GetNewTarget();
+
   // 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 400 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_