Basic TurboFan support for rest arguments.

src/ast/ast-numbering.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/ast/ast-numbering.h"
 
 #include "src/ast/ast.h"
 #include "src/ast/scopes.h"
 
 namespace v8 {
@@ skipping 567 matching lines @@
   if (scope->HasIllegalRedeclaration()) {
     Visit(scope->GetIllegalRedeclaration());
     DisableOptimization(kFunctionWithIllegalRedeclaration);
     return Finish(node);
   }
   if (scope->calls_eval()) DisableOptimization(kFunctionCallsEval);
   if (scope->arguments() != NULL && !scope->arguments()->IsStackAllocated()) {
     DisableCrankshaft(kContextAllocatedArguments);
   }
 
+  int rest_index;
+  if (scope->rest_parameter(&rest_index)) {
+    DisableCrankshaft(kRestParameter);
+  }
+
   VisitDeclarations(scope->declarations());
   VisitStatements(node->body());
 
   return Finish(node);
 }
 
 
 bool AstNumbering::Renumber(Isolate* isolate, Zone* zone,
                             FunctionLiteral* function) {
   AstNumberingVisitor visitor(isolate, zone);
   return visitor.Renumber(function);
 }
 }  // namespace internal
 }  // namespace v8