[runtime] Optimize and unify rest parameters.

src/code-stubs.cc

 // Copyright 2012 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-stubs.h"
 
 #include <sstream>
 
 #include "src/bootstrapper.h"
 #include "src/compiler/code-stub-assembler.h"
@@ skipping 804 matching lines @@
                        STORE_AND_GROW_NO_TRANSITION).GetCode();
   for (int i = FIRST_FAST_ELEMENTS_KIND; i <= LAST_FAST_ELEMENTS_KIND; i++) {
     ElementsKind kind = static_cast<ElementsKind>(i);
     StoreFastElementStub(isolate, true, kind, STANDARD_STORE).GetCode();
     StoreFastElementStub(isolate, true, kind, STORE_AND_GROW_NO_TRANSITION)
         .GetCode();
   }
 }
 
 
-void RestParamAccessStub::Generate(MacroAssembler* masm) { GenerateNew(masm); }
-
-
 void ArgumentsAccessStub::Generate(MacroAssembler* masm) {
   switch (type()) {
     case READ_ELEMENT:
       GenerateReadElement(masm);
       break;
     case NEW_SLOPPY_FAST:
       GenerateNewSloppyFast(masm);
       break;
     case NEW_SLOPPY_SLOW:
       GenerateNewSloppySlow(masm);
@@ skipping 18 matching lines @@
       os << "NewSloppySlow";
       break;
     case NEW_STRICT:
       os << "NewStrict";
       break;
   }
   return;
 }
 
 
-void RestParamAccessStub::PrintName(std::ostream& os) const {  // NOLINT
-  os << "RestParamAccessStub_";
-}
-
-
 void ArrayConstructorStub::PrintName(std::ostream& os) const {  // NOLINT
   os << "ArrayConstructorStub";
   switch (argument_count()) {
     case ANY:
       os << "_Any";
       break;
     case NONE:
       os << "_None";
       break;
     case ONE:
@@ skipping 155 matching lines @@
   if (type->Is(Type::UntaggedPointer())) {
     return Representation::External();
   }
 
   DCHECK(!type->Is(Type::Untagged()));
   return Representation::Tagged();
 }
 
 }  // namespace internal
 }  // namespace v8