We should be able to jsDynamicCast from JSType when possible
https://bugs.webkit.org/show_bug.cgi?id=182804
Reviewed by Filip Pizlo and Mark Lam.
This patch beefs up jsDynamicCast in some of the cases where we
can use the JSType to quickly determine if a cell is a subclass of
the desired type. Since all JSCells have a range of JSTypes they support,
if there is a range exclusive to a class and all subclasses we can use
that range to quickly determine if the cast should be successful.
Additionally, the JSValue versions of jsCast and jsDynamicCast now
call the JSCell version after checking the value is a cell.
Finally, the casting functions have been moved to a new header,
JSCast.h
- JavaScriptCore.xcodeproj/project.pbxproj:
- bytecode/CallVariant.h:
- bytecode/CodeBlock.h:
- bytecode/ExecutableToCodeBlockEdge.h:
- bytecode/TrackedReferences.h:
- bytecode/UnlinkedCodeBlock.h:
- bytecode/UnlinkedFunctionExecutable.h:
- dfg/DFGAbstractValue.h:
- dfg/DFGCommonData.h:
- dfg/DFGFrozenValue.h:
- dfg/DFGStructureAbstractValue.h:
- heap/CellContainerInlines.h:
- heap/ConservativeRoots.cpp:
- heap/GCLogging.cpp:
- heap/HeapInlines.h:
- heap/HeapSnapshotBuilder.cpp:
- heap/MarkedBlock.cpp:
- heap/MarkedBlockInlines.h:
- heap/SubspaceInlines.h:
- heap/WeakInlines.h:
- jit/JITOpcodes.cpp:
- jit/JITOpcodes32_64.cpp:
- llint/LLIntOffsetsExtractor.cpp:
- runtime/ArrayBufferNeuteringWatchpoint.h:
- runtime/BigIntPrototype.cpp:
- runtime/ClassInfo.h:
- runtime/CustomGetterSetter.h:
- runtime/FunctionRareData.h:
- runtime/GetterSetter.h:
- runtime/InferredType.h:
- runtime/InferredTypeTable.h:
- runtime/InferredValue.h:
- runtime/InternalFunction.cpp:
(JSC::InternalFunction::finishCreation):
- runtime/JSAPIValueWrapper.h:
- runtime/JSArray.h:
(JSC::JSArray::finishCreation):
- runtime/JSArrayBufferView.cpp:
(JSC::JSArrayBufferView::finishCreation):
(JSC::jsCast):
(JSC::JSCastingHelpers::jsDynamicCastGenericImpl):
(JSC::JSCastingHelpers::jsDynamicCastJSTypeImpl):
(JSC::JSCastingHelpers::JSDynamicCastTraits::cast):
(JSC::jsDynamicCast):
- runtime/JSCell.cpp:
- runtime/JSCell.h:
(JSC::jsCast): Deleted.
(JSC::jsDynamicCast): Deleted.
- runtime/JSCellInlines.h:
- runtime/JSFunction.cpp:
(JSC::JSFunction::finishCreation):
- runtime/JSJob.h:
- runtime/JSObject.h:
(JSC::JSObject::finishCreation):
- runtime/JSPromiseDeferred.h:
- runtime/JSPropertyNameEnumerator.h:
- runtime/NativeStdFunctionCell.h:
- runtime/ScopedArgumentsTable.h:
- runtime/SparseArrayValueMap.h:
- runtime/Structure.h:
- runtime/StructureChain.h:
- runtime/StructureRareData.h:
- tools/CellProfile.h:
- wasm/js/JSWebAssemblyCodeBlock.h:
