Purge unused internalized string accessors.

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 <algorithm>
 
 #include "src/v8.h"
 
@@ skipping 7183 matching lines @@
   VariableProxy* proxy = expr->obj()->AsVariableProxy();
   if (proxy == NULL) return false;
   if (!proxy->var()->IsStackAllocated()) return false;
   if (!environment()->Lookup(proxy->var())->CheckFlag(HValue::kIsArguments)) {
     return false;
   }
 
   HInstruction* result = NULL;
   if (expr->key()->IsPropertyName()) {
     Handle<String> name = expr->key()->AsLiteral()->AsPropertyName();
-    if (!name->IsOneByteEqualTo(STATIC_ASCII_VECTOR("length"))) return false;
+    if (!String::Equals(name, isolate()->factory()->length_string())) {
+      return false;
+    }
 
     if (function_state()->outer() == NULL) {
       HInstruction* elements = Add<HArgumentsElements>(false);
       result = New<HArgumentsLength>(elements);
     } else {
       // Number of arguments without receiver.
       int argument_count = environment()->
           arguments_environment()->parameter_count() - 1;
       result = New<HConstant>(argument_count);
     }
@@ skipping 5266 matching lines @@
   if (ShouldProduceTraceOutput()) {
     isolate()->GetHTracer()->TraceHydrogen(name(), graph_);
   }
 
 #ifdef DEBUG
   graph_->Verify(false);  // No full verify.
 #endif
 }
 
 } }  // namespace v8::internal