[builtins] Start refactoring the Apply builtin.

src/builtins/builtins.h

 // Copyright 2011 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_BUILTINS_BUILTINS_H_
 #define V8_BUILTINS_BUILTINS_H_
 
 #include "src/base/flags.h"
 #include "src/builtins/builtins-definitions.h"
 #include "src/globals.h"
@@ skipping 108 matching lines @@
   static void Generate_CallFunction(MacroAssembler* masm,
                                     ConvertReceiverMode mode,
                                     TailCallMode tail_call_mode);
 
   static void Generate_CallBoundFunctionImpl(MacroAssembler* masm,
                                              TailCallMode tail_call_mode);
 
   static void Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode,
                             TailCallMode tail_call_mode);
 
+  static void Generate_Varargs(MacroAssembler* masm, Handle<Code> code);

[petermarshall, 2017/06/08 08:49:04]

'Varargs' is a bit confusing because there is no verb, what about 'PushVarargs'?

[Benedikt Meurer, 2017/06/08 18:02:58]

Renamed to CallOrConstructVarargs and CallOrConstructForwardVarargs.

   static void Generate_ForwardVarargs(MacroAssembler* masm, Handle<Code> code);
 
   static void Generate_InterpreterPushArgsThenCallImpl(
       MacroAssembler* masm, ConvertReceiverMode receiver_mode,
       TailCallMode tail_call_mode, InterpreterPushArgsMode mode);
 
   static void Generate_InterpreterPushArgsThenConstructImpl(
       MacroAssembler* masm, InterpreterPushArgsMode mode);
 
 #define DECLARE_ASM(Name, ...) \
@@ skipping 16 matching lines @@
   friend class Isolate;
   friend class SetupIsolateDelegate;
 
   DISALLOW_COPY_AND_ASSIGN(Builtins);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_BUILTINS_BUILTINS_H_