Changeset 119779 in webkit for trunk/Source/JavaScriptCore/runtime/JSGlobalObject.h

Timestamp:

Jun 7, 2012, 6:31:21 PM (13 years ago)

Author:

[email protected]

Message:

DFG should inline prototype chain accesses, and do the right things if the
specific function optimization is available
​https://bugs.webkit.org/show_bug.cgi?id=88594

Reviewed by Gavin Barraclough.

Looks like a 3% win on V8.

• bytecode/CodeBlock.h:

(JSC::Structure::prototypeForLookup):
(JSC):

• bytecode/GetByIdStatus.cpp:

(JSC::GetByIdStatus::computeFromLLInt):
(JSC):
(JSC::GetByIdStatus::computeForChain):
(JSC::GetByIdStatus::computeFor):

• bytecode/GetByIdStatus.h:

(JSC::GetByIdStatus::GetByIdStatus):
(JSC::GetByIdStatus::isSimple):
(JSC::GetByIdStatus::chain):
(JSC::GetByIdStatus::specificValue):
(GetByIdStatus):

• bytecode/StructureSet.h:

(StructureSet):
(JSC::StructureSet::singletonStructure):

• bytecode/StructureStubInfo.h:

(JSC::StructureStubInfo::initGetByIdProto):
(JSC::StructureStubInfo::initGetByIdChain):

• dfg/DFGByteCodeParser.cpp:

(JSC::DFG::ByteCodeParser::handleGetById):

• dfg/DFGRepatch.cpp:

(JSC::DFG::tryCacheGetByID):

• jit/JITStubs.cpp:

(JSC::JITThunks::tryCacheGetByID):

• runtime/JSGlobalObject.h:

(JSC::Structure::prototypeForLookup):
(JSC):

• runtime/Structure.h:

(Structure):

File:

• trunk/Source/JavaScriptCore/runtime/JSGlobalObject.h (modified) (2 diffs)

trunk/Source/JavaScriptCore/runtime/JSGlobalObject.h

@@ -382 +382 @@
     }
 
-    inline JSValue Structure::prototypeForLookup(ExecState* exec) const
+    inline JSValue Structure::prototypeForLookup(JSGlobalObject* globalObject) const
     {
         if (isObject())
@@ -388 +388 @@
 
         ASSERT(typeInfo().type() == StringType);
-        return exec->lexicalGlobalObject()->stringPrototype();
+        return globalObject->stringPrototype();
+    }
+
+    inline JSValue Structure::prototypeForLookup(ExecState* exec) const
+    {
+        return prototypeForLookup(exec->lexicalGlobalObject());
     }