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 ea4da9abf1c75870cdd7c5060b869b9b882b19b9..f3743cc385f43e1202ceab99145cd9623453444e 100644
--- a/src/hydrogen.h
+++ b/src/hydrogen.h
@@ -2132,6 +2132,7 @@ 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;
@@ -2456,6 +2457,24 @@ class HOptimizedGraphBuilder : public HGraphBuilder, public AstVisitor {
                                 HValue* receiver,
                                 Handle<Map> receiver_map);
 
+  HInstruction* NewPlainFunctionCall(HValue* fun,
+                                     HValue* call_kind_value,
+                                     int argument_count,
+                                     bool pass_argument_count);
+
+  HInstruction* NewArgumentAdaptorCall(HValue* fun, HValue* context,
+                                       HValue* call_kind_value,
+                                       int argument_count,
+                                       HValue* expected_param_count);
+
+  HInstruction* BuildCallConstantFunction(Handle<JSFunction> target,
+                                          int argument_count,
+                                          CallKind call_kind);
+
+  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_;