Distinguish slow from fast sloppy arguments

src/objects-inl.h

 // 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.
 //
 // Review notes:
 //
 // - The use of macros in these inline functions may seem superfluous
 // but it is absolutely needed to make sure gcc generates optimal
 // code. gcc is not happy when attempting to inline too deep.
 //
@@ skipping 6202 matching lines @@
     DCHECK((IsFastSmiOrObjectElementsKind(kind) &&
             (map == GetHeap()->fixed_array_map() ||
              map == GetHeap()->fixed_cow_array_map())) ||
            (IsFastDoubleElementsKind(kind) &&
             (fixed_array->IsFixedDoubleArray() ||
              fixed_array == GetHeap()->empty_fixed_array())) ||
            (kind == DICTIONARY_ELEMENTS &&
             fixed_array->IsFixedArray() &&
             fixed_array->IsDictionary()) ||
            (kind > DICTIONARY_ELEMENTS));
-    DCHECK((kind != SLOPPY_ARGUMENTS_ELEMENTS) ||
+    DCHECK(!IsSloppyArgumentsElements(kind) ||
            (elements()->IsFixedArray() && elements()->length() >= 2));
   }
 #endif
   return kind;
 }
 
 
 bool JSObject::HasFastObjectElements() {
   return IsFastObjectElementsKind(GetElementsKind());
 }
@@ skipping 22 matching lines @@
 bool JSObject::HasFastElements() {
   return IsFastElementsKind(GetElementsKind());
 }
 
 
 bool JSObject::HasDictionaryElements() {
   return GetElementsKind() == DICTIONARY_ELEMENTS;
 }
 
 
+bool JSObject::HasFastArgumentsElements() {
+  return GetElementsKind() == FAST_SLOPPY_ARGUMENTS_ELEMENTS;
+}
+
+
+bool JSObject::HasSlowArgumentsElements() {
+  return GetElementsKind() == SLOW_SLOPPY_ARGUMENTS_ELEMENTS;
+}
+
+
 bool JSObject::HasSloppyArgumentsElements() {
-  return GetElementsKind() == SLOPPY_ARGUMENTS_ELEMENTS;
+  return IsSloppyArgumentsElements(GetElementsKind());
 }
 
 
 bool JSObject::HasExternalArrayElements() {
   HeapObject* array = elements();
   DCHECK(array != NULL);
   return array->IsExternalArray();
 }
 
 
@@ skipping 1019 matching lines @@
 #undef READ_SHORT_FIELD
 #undef WRITE_SHORT_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 #undef NOBARRIER_READ_BYTE_FIELD
 #undef NOBARRIER_WRITE_BYTE_FIELD
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_