Refactor AccessCase to be more like B3Value
https://bugs.webkit.org/show_bug.cgi?id=168408
Reviewed by Filip Pizlo.
This patch makes AccessCase (and new subclasses) more like B3Value. In the new system each
type has an associated AccessCase subclass. For instance any getter should use the
GetterSetterAccessCase subclass. The new system is easier to follow since you no longer need
to know exactly which members are used by which types. The subclass to AccessType mapping is:
GetterSetterAccessCase:
Getter
CustomAccessorGetter
CustomValueGetter
Setter
ProxyableAccessCase:
Load
Miss
GetGetter
IntrinsicGetterAccessCase:
IntrinsicGetter
AccessCase:
Everything else
It also has the additional advantage that it uses less memory for the cases where we would have needed
rare data in the past but that case would only use a small bit of it.
This patch also removes megamorphic loads and renames some TryGetById related enum values from Pure to Try.
- CMakeLists.txt:
- JavaScriptCore.xcodeproj/project.pbxproj:
- bytecode/AccessCase.cpp: Added.
(JSC::AccessCase::AccessCase):
(JSC::AccessCase::create):
(JSC::AccessCase::~AccessCase):
(JSC::AccessCase::fromStructureStubInfo):
(JSC::AccessCase::clone):
(JSC::AccessCase::commit):
(JSC::AccessCase::guardedByStructureCheck):
(JSC::AccessCase::doesCalls):
(JSC::AccessCase::couldStillSucceed):
(JSC::AccessCase::canReplace):
(JSC::AccessCase::dump):
(JSC::AccessCase::visitWeak):
(JSC::AccessCase::propagateTransitions):
(JSC::AccessCase::generateWithGuard):
(JSC::AccessCase::generate):
(JSC::AccessCase::generateImpl):
- bytecode/AccessCase.h: Added.
(JSC::AccessCase::as):
(JSC::AccessCase::create):
(JSC::AccessCase::type):
(JSC::AccessCase::state):
(JSC::AccessCase::offset):
(JSC::AccessCase::structure):
(JSC::AccessCase::newStructure):
(JSC::AccessCase::conditionSet):
(JSC::AccessCase::alternateBase):
(JSC::AccessCase::additionalSet):
(JSC::AccessCase::viaProxy):
(JSC::AccessCase::isGetter):
(JSC::AccessCase::isAccessor):
(JSC::AccessCase::dumpImpl):
(JSC::AccessCase::resetState):
- bytecode/GetByIdStatus.cpp:
(JSC::GetByIdStatus::computeForStubInfoWithoutExitSiteFeedback):
- bytecode/GetterSetterAccessCase.cpp: Added.
(JSC::GetterSetterAccessCase::GetterSetterAccessCase):
(JSC::GetterSetterAccessCase::create):
(JSC::GetterSetterAccessCase::~GetterSetterAccessCase):
(JSC::GetterSetterAccessCase::clone):
(JSC::GetterSetterAccessCase::alternateBase):
(JSC::GetterSetterAccessCase::dumpImpl):
(JSC::GetterSetterAccessCase::emitDOMJITGetter):
- bytecode/GetterSetterAccessCase.h: Added.
(JSC::GetterSetterAccessCase::callLinkInfo):
(JSC::GetterSetterAccessCase::customSlotBase):
(JSC::GetterSetterAccessCase::domJIT):
- bytecode/IntrinsicGetterAccessCase.cpp: Added.
(JSC::IntrinsicGetterAccessCase::IntrinsicGetterAccessCase):
(JSC::IntrinsicGetterAccessCase::create):
(JSC::IntrinsicGetterAccessCase::~IntrinsicGetterAccessCase):
(JSC::IntrinsicGetterAccessCase::clone):
- bytecode/IntrinsicGetterAccessCase.h: Added.
(JSC::IntrinsicGetterAccessCase::intrinsicFunction):
(JSC::IntrinsicGetterAccessCase::intrinsic):
- bytecode/PolymorphicAccess.cpp:
(JSC::PolymorphicAccess::regenerate):
(WTF::printInternal):
(JSC::AccessCase::AccessCase): Deleted.
(JSC::AccessCase::tryGet): Deleted.
(JSC::AccessCase::get): Deleted.
(JSC::AccessCase::megamorphicLoad): Deleted.
(JSC::AccessCase::replace): Deleted.
(JSC::AccessCase::transition): Deleted.
(JSC::AccessCase::setter): Deleted.
(JSC::AccessCase::in): Deleted.
(JSC::AccessCase::getLength): Deleted.
(JSC::AccessCase::getIntrinsic): Deleted.
(JSC::AccessCase::~AccessCase): Deleted.
(JSC::AccessCase::fromStructureStubInfo): Deleted.
(JSC::AccessCase::clone): Deleted.
(JSC::AccessCase::commit): Deleted.
(JSC::AccessCase::guardedByStructureCheck): Deleted.
(JSC::AccessCase::alternateBase): Deleted.
(JSC::AccessCase::doesCalls): Deleted.
(JSC::AccessCase::couldStillSucceed): Deleted.
(JSC::AccessCase::canBeReplacedByMegamorphicLoad): Deleted.
(JSC::AccessCase::canReplace): Deleted.
(JSC::AccessCase::dump): Deleted.
(JSC::AccessCase::visitWeak): Deleted.
(JSC::AccessCase::propagateTransitions): Deleted.
(JSC::AccessCase::generateWithGuard): Deleted.
(JSC::AccessCase::generate): Deleted.
(JSC::AccessCase::generateImpl): Deleted.
(JSC::AccessCase::emitDOMJITGetter): Deleted.
- bytecode/PolymorphicAccess.h:
(JSC::AccessCase::type): Deleted.
(JSC::AccessCase::state): Deleted.
(JSC::AccessCase::offset): Deleted.
(JSC::AccessCase::viaProxy): Deleted.
(JSC::AccessCase::structure): Deleted.
(JSC::AccessCase::newStructure): Deleted.
(JSC::AccessCase::conditionSet): Deleted.
(JSC::AccessCase::intrinsicFunction): Deleted.
(JSC::AccessCase::intrinsic): Deleted.
(JSC::AccessCase::domJIT): Deleted.
(JSC::AccessCase::additionalSet): Deleted.
(JSC::AccessCase::customSlotBase): Deleted.
(JSC::AccessCase::isGetter): Deleted.
(JSC::AccessCase::callLinkInfo): Deleted.
(JSC::AccessCase::RareData::RareData): Deleted.
- bytecode/ProxyableAccessCase.cpp: Added.
(JSC::ProxyableAccessCase::ProxyableAccessCase):
(JSC::ProxyableAccessCase::create):
(JSC::ProxyableAccessCase::~ProxyableAccessCase):
(JSC::ProxyableAccessCase::clone):
(JSC::ProxyableAccessCase::dumpImpl):
- bytecode/ProxyableAccessCase.h: Added.
- bytecode/PutByIdStatus.cpp:
(JSC::PutByIdStatus::computeForStubInfo):
- bytecode/StructureStubInfo.cpp:
(JSC::StructureStubInfo::reset):
- bytecode/StructureStubInfo.h:
- dfg/DFGByteCodeParser.cpp:
(JSC::DFG::ByteCodeParser::parseBlock):
- dfg/DFGSpeculativeJIT.cpp:
(JSC::DFG::SpeculativeJIT::compileTryGetById):
(JSC::FTL::DFG::LowerDFGToB3::compileNode):
(JSC::FTL::DFG::LowerDFGToB3::compileGetById):
- jit/IntrinsicEmitter.cpp:
(JSC::IntrinsicGetterAccessCase::canEmitIntrinsicGetter):
(JSC::IntrinsicGetterAccessCase::emitIntrinsicGetter):
(JSC::AccessCase::canEmitIntrinsicGetter): Deleted.
(JSC::AccessCase::emitIntrinsicGetter): Deleted.
- jit/JITOperations.cpp:
- jit/JITPropertyAccess.cpp:
(JSC::JIT::emit_op_try_get_by_id):
- jit/JITPropertyAccess32_64.cpp:
(JSC::JIT::emit_op_try_get_by_id):
(JSC::tryCacheGetByID):
(JSC::tryCachePutByID):
(JSC::tryRepatchIn):
- jit/Repatch.h:
- runtime/Options.h:
