Cache maps for slow case objects.

src/objects-debug.cc

 // Copyright 2006-2008 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 628 matching lines @@
 void Map::MapVerify() {
   ASSERT(!Heap::InNewSpace(this));
   ASSERT(FIRST_TYPE <= instance_type() && instance_type() <= LAST_TYPE);
   ASSERT(kPointerSize <= instance_size()
          && instance_size() < Heap::Capacity());
   VerifyHeapPointer(prototype());
   VerifyHeapPointer(instance_descriptors());
 }
 
 
+void Map::NormalizedMapVerify() {
+  MapVerify();
+  ASSERT(instance_descriptors() == Heap::empty_descriptor_array());
+  ASSERT(code_cache() == Heap::empty_fixed_array());
+  ASSERT(pre_allocated_property_fields() == 0);
+  ASSERT(unused_property_fields() == 0);
+  ASSERT(scavenger() == Heap::GetScavenger(instance_type(), instance_size()));
+}
+
+
 void CodeCache::CodeCachePrint() {
   HeapObject::PrintHeader("CodeCache");
   PrintF("\n - default_cache: ");
   default_cache()->ShortPrint();
   PrintF("\n - normal_type_cache: ");
   normal_type_cache()->ShortPrint();
 }
 
 
 void CodeCache::CodeCacheVerify() {
@@ skipping 695 matching lines @@
       get(i)->Verify();
     }
     for (int i = size; i < length(); i++) {
       ASSERT(get(i)->IsTheHole());
       get(i)->Verify();
     }
   }
 }
 
 
+void NormalizedMapCache::NormalizedMapCacheVerify() {
+  FixedArray::cast(this)->Verify();
+  if (FLAG_enable_slow_asserts) {
+    for (int i = 0; i < length(); i++) {
+      Object* e = get(i);
+      if (e->IsMap()) {
+        Map::cast(e)->NormalizedMapVerify();
+      } else {
+        ASSERT(e->IsUndefined());
+      }
+    }
+  }
+}
+
+
 #endif  // DEBUG
 
 } }  // namespace v8::internal