[turbofan] Introduce JSCallForwardVarargs operator.

src/builtins/builtins-call.cc

 // Copyright 2016 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/builtins/builtins-utils.h"
 #include "src/builtins/builtins.h"
-#include "src/builtins/builtins-utils.h"
+#include "src/macro-assembler.h"
 
 namespace v8 {
 namespace internal {
 
 Handle<Code> Builtins::CallFunction(ConvertReceiverMode mode,
                                     TailCallMode tail_call_mode) {
   switch (tail_call_mode) {
     case TailCallMode::kDisallow:
       switch (mode) {
         case ConvertReceiverMode::kNullOrUndefined:
@@ skipping 123 matching lines @@
 void Builtins::Generate_TailCall_ReceiverIsNotNullOrUndefined(
     MacroAssembler* masm) {
   Generate_Call(masm, ConvertReceiverMode::kNotNullOrUndefined,
                 TailCallMode::kAllow);
 }
 
 void Builtins::Generate_TailCall_ReceiverIsAny(MacroAssembler* masm) {
   Generate_Call(masm, ConvertReceiverMode::kAny, TailCallMode::kAllow);
 }
 
+void Builtins::Generate_CallForwardVarargs(MacroAssembler* masm) {
+  Generate_CallForwardVarargs(masm, masm->isolate()->builtins()->Call());
+}
+
+void Builtins::Generate_CallFunctionForwardVarargs(MacroAssembler* masm) {
+  Generate_CallForwardVarargs(masm,
+                              masm->isolate()->builtins()->CallFunction());
+}
+
 }  // namespace internal
 }  // namespace v8