Remove some asserts to speed up debug mode.

src/objects-inl.h

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1282 matching lines @@
 int HeapNumber::get_sign() {
   return READ_INT_FIELD(this, kExponentOffset) & kSignMask;
 }
 
 
 ACCESSORS(JSObject, properties, FixedArray, kPropertiesOffset)
 
 
 FixedArrayBase* JSObject::elements() {
   Object* array = READ_FIELD(this, kElementsOffset);
-  ASSERT(array->HasValidElements());
   return static_cast<FixedArrayBase*>(array);
 }
 
 void JSObject::ValidateSmiOnlyElements() {
 #if DEBUG
   if (map()->elements_kind() == FAST_SMI_ONLY_ELEMENTS) {
     Heap* heap = GetHeap();
     // Don't use elements, since integrity checks will fail if there
     // are filler pointers in the array.
     FixedArray* fixed_array =
@@ skipping 3320 matching lines @@
 #undef WRITE_INT_FIELD
 #undef READ_SHORT_FIELD
 #undef WRITE_SHORT_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_