Remove special ArrayLength handling already covered by JSObjectFieldAccessors

src/hydrogen.h

Index: src/hydrogen.h
diff --git a/src/hydrogen.h b/src/hydrogen.h
index a2ce9c3d209b414777e8f47789e1d66e4ea0345c..b201949c90c4db6f8f0a4982f795ca5c7bd926b9 100644
--- a/src/hydrogen.h
+++ b/src/hydrogen.h
@@ -2336,15 +2336,14 @@ class HOptimizedGraphBuilder : public HGraphBuilder, public AstVisitor {
     }
 
     bool GetJSObjectFieldAccess(HObjectAccess* access) {
-      if (IsArrayLength()) {
-        *access = HObjectAccess::ForArrayLength(map()->elements_kind());
-        return true;
-      }
       int offset;
       if (Accessors::IsJSObjectFieldAccessor<Type>(type_, name_, &offset)) {
         if (type_->Is(Type::String())) {
           ASSERT(name_->Equals(isolate()->heap()->length_string()));
           *access = HObjectAccess::ForStringLength();
+        } else if (type_->Is(Type::Array())) {
+          ASSERT(name_->Equals(isolate()->heap()->length_string()));
+          *access = HObjectAccess::ForArrayLength(map()->elements_kind());
         } else {
           *access = HObjectAccess::ForMapAndOffset(map(), offset);
         }
@@ -2368,11 +2367,6 @@ class HOptimizedGraphBuilder : public HGraphBuilder, public AstVisitor {
     Isolate* isolate() { return lookup_.isolate(); }
     CompilationInfo* current_info() { return builder_->current_info(); }
 
-    bool IsArrayLength() {
-      return map()->instance_type() == JS_ARRAY_TYPE &&
-          name_->Equals(isolate()->heap()->length_string());
-    }
-
     bool LoadResult(Handle<Map> map);
     bool LookupDescriptor();
     bool LookupInPrototypes();