Refactor the code cache to handle large number of properties on the global ob...

src/objects-inl.h

Index: src/objects-inl.h
===================================================================
--- src/objects-inl.h	(revision 3925)
+++ src/objects-inl.h	(working copy)
@@ -564,6 +564,11 @@
 }
 
 
+bool Object::IsCodeCacheHashTable() {
+  return IsHashTable();
+}
+
+
 bool Object::IsMapCache() {
   return IsHashTable();
 }
@@ -1560,6 +1565,7 @@
 CAST_ACCESSOR(DescriptorArray)
 CAST_ACCESSOR(SymbolTable)
 CAST_ACCESSOR(CompilationCacheTable)
+CAST_ACCESSOR(CodeCacheHashTable)
 CAST_ACCESSOR(MapCache)
 CAST_ACCESSOR(String)
 CAST_ACCESSOR(SeqString)
@@ -2252,7 +2258,7 @@
 
 ACCESSORS(Map, instance_descriptors, DescriptorArray,
           kInstanceDescriptorsOffset)
-ACCESSORS(Map, code_cache, FixedArray, kCodeCacheOffset)
+ACCESSORS(Map, code_cache, Object, kCodeCacheOffset)
 ACCESSORS(Map, constructor, Object, kConstructorOffset)
 
 ACCESSORS(JSFunction, shared, SharedFunctionInfo, kSharedFunctionInfoOffset)
@@ -2390,6 +2396,9 @@
               kThisPropertyAssignmentsCountOffset)
 
 
+ACCESSORS(CodeCache, default_cache, FixedArray, kDefaultCacheOffset)
+ACCESSORS(CodeCache, normal_type_cache, Object, kNormalTypeCacheOffset)
+
 bool Script::HasValidSource() {
   Object* src = this->source();
   if (!src->IsString()) return true;
@@ -2990,8 +2999,8 @@
   // No write barrier is needed since empty_fixed_array is not in new space.
   // Please note this function is used during marking:
   //  - MarkCompactCollector::MarkUnmarkedObject
-  ASSERT(!Heap::InNewSpace(Heap::raw_unchecked_empty_fixed_array()));
-  WRITE_FIELD(this, kCodeCacheOffset, Heap::raw_unchecked_empty_fixed_array());
+  ASSERT(!Heap::InNewSpace(Heap::undefined_value()));
+  WRITE_FIELD(this, kCodeCacheOffset, Heap::undefined_value());
 }