Changeset 90437 in webkit for trunk/Source/JavaScriptCore/runtime/JSFunction.h

Timestamp:

Jul 5, 2011, 11:35:44 PM (14 years ago)

Author:

[email protected]

Message:

2011-07-05 Filip Pizlo <​[email protected]>

DFG JIT virtual call implementation is inefficient.
​https://bugs.webkit.org/show_bug.cgi?id=63974

Reviewed by Gavin Barraclough.

• dfg/DFGOperations.cpp:
• runtime/Executable.h: (JSC::ExecutableBase::generatedJITCodeForCallWithArityCheck): (JSC::ExecutableBase::generatedJITCodeForConstructWithArityCheck): (JSC::ExecutableBase::generatedJITCodeWithArityCheckFor): (JSC::ExecutableBase::hasJITCodeForCall): (JSC::ExecutableBase::hasJITCodeForConstruct): (JSC::ExecutableBase::hasJITCodeFor):
• runtime/JSFunction.h: (JSC::JSFunction::scopeUnchecked):

File:

• trunk/Source/JavaScriptCore/runtime/JSFunction.h (modified) (1 diff)

trunk/Source/JavaScriptCore/runtime/JSFunction.h

@@ -64 +64 @@
             return m_scopeChain.get();
         }
+        // This method may be called for host functins, in which case it
+        // will return an arbitrary value. This should only be used for
+        // optimized paths in which the return value does not matter for
+        // host functions, and checking whether the function is a host
+        // function is deemed too expensive.
+        ScopeChainNode* scopeUnchecked()
+        {
+            return m_scopeChain.get();
+        }
         void setScope(JSGlobalData& globalData, ScopeChainNode* scopeChain)
         {