Changeset 31172 in webkit for trunk/JavaScriptCore/kjs/ExecState.h

Timestamp:

Mar 19, 2008, 11:36:26 PM (17 years ago)

Author:

[email protected]

Message:

Avoid heap allocating the root scope chain node for eval and closure free functions

Reviewed by Maciej

Maciej suggested using an inline ScopeChainNode for functions that don't use eval
or closures as they are unable to ever capture the scope chain. This gives us a 2.4%
win in sunspider, a 15% win in controlflow-recursive, and big (>5%) wins in a number
of other tests.

File:

• trunk/JavaScriptCore/kjs/ExecState.h (modified) (1 diff)

trunk/JavaScriptCore/kjs/ExecState.h

@@ -189 +189 @@
 
         ScopeChain m_scopeChain;
+        ScopeChainNode m_inlineScopeChainNode;
         JSVariableObject* m_variableObject;
         JSObject* m_thisValue;