Changeset 42537 in webkit for trunk/JavaScriptCore/interpreter/CallFrame.h

Timestamp:

Apr 15, 2009, 12:13:25 AM (16 years ago)

Author:

[email protected]

Message:

Bug 25202: Improve performance of repeated callbacks into the VM

Reviewed by Cameron Zwarich

Add the concept of a CachedCall to native code for use in Array
prototype and similar functions where a single callback function
is called repeatedly with the same number of arguments.

Used Array.prototype.filter as the test function and got a 50% win
over a naive non-caching specialised version. This makes the native
implementation of Array.prototype.filter faster than the JS one once
more.

File:

• trunk/JavaScriptCore/interpreter/CallFrame.h (modified) (1 diff)

trunk/JavaScriptCore/interpreter/CallFrame.h

@@ -99 +99 @@
         friend class Interpreter;
         friend class JITStubs;
+        friend struct CallFrameClosure;
 
         static CallFrame* create(Register* callFrameBase) { return static_cast<CallFrame*>(callFrameBase); }