[es6] Parameter scopes for sloppy eval

src/hydrogen.cc

 // Copyright 2013 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/hydrogen.h"
 
 #include <sstream>
 
 #include "src/v8.h"
 
@@ skipping 4672 matching lines @@
   DCHECK(!HasStackOverflow());
   DCHECK(current_block() != NULL);
   DCHECK(current_block()->HasPredecessor());
 
   Scope* outer_scope = scope();
   Scope* scope = stmt->scope();
   BreakAndContinueInfo break_info(stmt, outer_scope);
 
   { BreakAndContinueScope push(&break_info, this);
     if (scope != NULL) {
-      if (scope->ContextLocalCount() > 0) {
+      if (scope->NeedsContext()) {
         // Load the function object.
         Scope* declaration_scope = scope->DeclarationScope();
         HInstruction* function;
         HValue* outer_context = environment()->context();
         if (declaration_scope->is_script_scope() ||
             declaration_scope->is_eval_scope()) {
           function = new (zone())
               HLoadContextSlot(outer_context, Context::CLOSURE_INDEX,
                                HLoadContextSlot::kNoCheck);
         } else {
@@ skipping 8733 matching lines @@
     isolate()->GetHTracer()->TraceHydrogen(name(), graph_);
   }
 
 #ifdef DEBUG
   graph_->Verify(false);  // No full verify.
 #endif
 }
 
 }  // namespace internal
 }  // namespace v8