[runtime] Optimize and unify rest parameters.

src/code-factory.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/code-factory.h"
 
 #include "src/bootstrapper.h"
 #include "src/ic/ic.h"
 
 namespace v8 {
@@ skipping 262 matching lines @@
 // static
 Callable CodeFactory::FastNewClosure(Isolate* isolate,
                                      LanguageMode language_mode,
                                      FunctionKind kind) {
   FastNewClosureStub stub(isolate, language_mode, kind);
   return Callable(stub.GetCode(), stub.GetCallInterfaceDescriptor());
 }
 
 
 // static
+Callable CodeFactory::FastNewRestParameter(Isolate* isolate) {
+  FastNewRestParameterStub stub(isolate);
+  return Callable(stub.GetCode(), stub.GetCallInterfaceDescriptor());
+}
+
+
+// static
 Callable CodeFactory::ArgumentsAccess(Isolate* isolate,
                                       bool is_unmapped_arguments,
                                       bool has_duplicate_parameters) {
   ArgumentsAccessStub::Type type = ArgumentsAccessStub::ComputeType(
       is_unmapped_arguments, has_duplicate_parameters);
   ArgumentsAccessStub stub(isolate, type);
   return Callable(stub.GetCode(), stub.GetCallInterfaceDescriptor());
 }
 
 
 // static
-Callable CodeFactory::RestArgumentsAccess(Isolate* isolate) {
-  RestParamAccessStub stub(isolate);
-  return Callable(stub.GetCode(), stub.GetCallInterfaceDescriptor());
-}
-
-
-// static
 Callable CodeFactory::AllocateHeapNumber(Isolate* isolate) {
   AllocateHeapNumberStub stub(isolate);
   return Callable(stub.GetCode(), stub.GetCallInterfaceDescriptor());
 }
 
 
 // static
 Callable CodeFactory::AllocateMutableHeapNumber(Isolate* isolate) {
   AllocateMutableHeapNumberStub stub(isolate);
   return Callable(stub.GetCode(), stub.GetCallInterfaceDescriptor());
@@ skipping 59 matching lines @@
 // static
 Callable CodeFactory::InterpreterCEntry(Isolate* isolate, int result_size) {
   // Note: If we ever use fpregs in the interpreter then we will need to
   // save fpregs too.
   CEntryStub stub(isolate, result_size, kDontSaveFPRegs, kArgvInRegister);
   return Callable(stub.GetCode(), InterpreterCEntryDescriptor(isolate));
 }
 
 }  // namespace internal
 }  // namespace v8