Changeset 37981 in webkit for trunk/JavaScriptCore/runtime/StructureID.h

Timestamp:

Oct 29, 2008, 3:27:31 PM (17 years ago)

Author:

[email protected]

Message:

2008-10-29 Sam Weinig <​[email protected]>

Reviewed by Cameron Zwarich.

Fix for ​https://bugs.webkit.org/show_bug.cgi?id=21958
Pack bits in StructureID to reduce the size of each StructureID by 2 words.

• runtime/PropertyMap.h: (JSC::PropertyMap::propertyMapSize):
• runtime/StructureID.cpp: (JSC::StructureID::dumpStatistics): Add additional size statistics when dumping. (JSC::StructureID::StructureID):
• runtime/StructureID.h:

File:

• trunk/JavaScriptCore/runtime/StructureID.h (modified) (3 diffs)

trunk/JavaScriptCore/runtime/StructureID.h

@@ -150 +150 @@
         TypeInfo m_typeInfo;
 
-        bool m_isDictionary;
-
-        bool m_hasGetterSetterProperties;
-
         JSValue* m_prototype;
         RefPtr<StructureIDChain> m_cachedPrototypeChain;
@@ -159 +155 @@
         RefPtr<StructureID> m_previous;
         UString::Rep* m_nameInPrevious;
-        unsigned m_attributesInPrevious;
 
         size_t m_transitionCount;
-        bool m_usingSingleTransitionSlot;
         union {
             StructureID* singleTransition;
@@ -174 +168 @@
 
         size_t m_cachedTransistionOffset;
+
+        bool m_isDictionary : 1;
+        bool m_hasGetterSetterProperties : 1;
+        bool m_usingSingleTransitionSlot : 1;
+        unsigned m_attributesInPrevious : 5;
     };