Preview of a first step towards unification of hydrogen calls

src/hydrogen.h

Index: src/hydrogen.h
diff --git a/src/hydrogen.h b/src/hydrogen.h
index cb99b555f5044ba5fa62df089d185944294c28fe..f8fb51789b6d7a4203109eb98056977814e01bdd 100644
--- a/src/hydrogen.h
+++ b/src/hydrogen.h
@@ -2173,6 +2173,7 @@ class HOptimizedGraphBuilder : public HGraphBuilder, public AstVisitor {
   // Remove the arguments from the bailout environment and emit instructions
   // to push them as outgoing parameters.
   template <class Instruction> HInstruction* PreProcessCall(Instruction* call);
+  void PushArgumentsFromEnvironment(int count);
 
   void SetUpScope(Scope* scope);
   virtual void VisitStatements(ZoneList<Statement*>* statements) V8_OVERRIDE;
@@ -2499,6 +2500,21 @@ class HOptimizedGraphBuilder : public HGraphBuilder, public AstVisitor {
                                 HValue* receiver,
                                 Handle<Map> receiver_map);
 
+  HInstruction* NewPlainFunctionCall(HValue* fun,
+                                     int argument_count,
+                                     bool pass_argument_count);
+
+  HInstruction* NewArgumentAdaptorCall(HValue* fun, HValue* context,
+                                       int argument_count,
+                                       HValue* expected_param_count);
+
+  HInstruction* BuildCallConstantFunction(Handle<JSFunction> target,
+                                          int argument_count);
+
+  HInstruction* NewCallKeyed(HValue* key, int argument_count);
+
+  HInstruction* NewCallNamed(Handle<String> name, int argument_count);
+
   // The translation state of the currently-being-translated function.
   FunctionState* function_state_;