[turbofan] Implement the call protocol properly for direct calls.

src/compiler/ast-graph-builder.cc

 // 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.
 
 #include "src/compiler/ast-graph-builder.h"
 
 #include "src/compiler.h"
 #include "src/compiler/ast-loop-assignment-analyzer.h"
 #include "src/compiler/control-builders.h"
 #include "src/compiler/linkage.h"
@@ skipping 465 matching lines @@
         Linkage::kJSFunctionCallClosureParamIndex, "%closure");
     Node* node = NewNode(op, graph()->start());
     function_closure_.set(node);
   }
   return function_closure_.get();
 }
 
 
 Node* AstGraphBuilder::GetFunctionContext() {
   if (!function_context_.is_set()) {
-    // Parameter (arity + 1) is special for the outer context of the function
+    // Parameter (arity + 2) is special for the outer context of the function
     const Operator* op = common()->Parameter(
-        info()->num_parameters_including_this(), "%context");
+        info()->num_parameters_including_this() + 1, "%context");
     Node* node = NewNode(op, graph()->start());
     function_context_.set(node);
   }
   return function_context_.get();
 }
 
 
 bool AstGraphBuilder::CreateGraph(bool stack_check) {
   Scope* scope = info()->scope();
   DCHECK(graph() != NULL);
 
   // Set up the basic structure of the graph. Outputs for {Start} are the formal
-  // parameters (including the receiver) plus context and closure.
-  int actual_parameter_count = info()->num_parameters_including_this() + 2;
+  // parameters (including the receiver) plus number of arguments, context and
+  // closure.
+  int actual_parameter_count = info()->num_parameters_including_this() + 3;
   graph()->SetStart(graph()->NewNode(common()->Start(actual_parameter_count)));
 
   // Initialize the top-level environment.
   Environment env(this, scope, graph()->start());
   set_environment(&env);
 
   if (info()->is_osr()) {
     // Use OSR normal entry as the start of the top-level environment.
     // It will be replaced with {Dead} after typing and optimizations.
     NewNode(common()->OsrNormalEntry());
@@ skipping 3848 matching lines @@
     // Phi does not exist yet, introduce one.
     value = NewPhi(inputs, value, control);
     value->ReplaceInput(inputs - 1, other);
   }
   return value;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8