Changeset 42065 in webkit for trunk/JavaScriptCore/parser/Nodes.h

Timestamp:

Mar 27, 2009, 8:50:39 PM (16 years ago)

Author:

[email protected]

Message:

Improve performance of Function.prototype.call
<​https://bugs.webkit.org/show_bug.cgi?id=24907>

Reviewed by Gavin Barraclough

Optimistically assume that expression.call(..) is going to be a call to
Function.prototype.call, and handle it specially to attempt to reduce the
degree of VM reentrancy.

When everything goes right this removes the vm reentry improving .call()
by around a factor of 10.

File:

• trunk/JavaScriptCore/parser/Nodes.h (modified) (1 diff)

trunk/JavaScriptCore/parser/Nodes.h

@@ -764 +764 @@
         virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) JSC_FAST_CALL;
 
-    private:
+    protected:
         RefPtr<ExpressionNode> m_base;
         Identifier m_ident;
         RefPtr<ArgumentsNode> m_args;
+    };
+
+    class CallFunctionCallDotNode : public FunctionCallDotNode {
+    public:
+        CallFunctionCallDotNode(JSGlobalData* globalData, ExpressionNode* base, const Identifier& ident, ArgumentsNode* args, unsigned divot, unsigned startOffset, unsigned endOffset) JSC_FAST_CALL
+            : FunctionCallDotNode(globalData, base, ident, args, divot, startOffset, endOffset)
+        {
+        }
+        virtual RegisterID* emitBytecode(BytecodeGenerator&, RegisterID* = 0) JSC_FAST_CALL;
     };