https://bugs.webkit.org/show_bug.cgi?id=100599

Reviewed by Oliver Hunt.

Turn the previous massive Array::Mode enum into a class that contains four
fields, the type, whether it's a JSArray, the level of speculation, and the
kind of conversion to perform.
        
No performance or behavioral change.

* dfg/DFGAbstractState.cpp:
(JSC::DFG::AbstractState::execute):
* dfg/DFGArgumentsSimplificationPhase.cpp:
(JSC::DFG::ArgumentsSimplificationPhase::run):
* dfg/DFGArrayMode.cpp:
(JSC::DFG::ArrayMode::fromObserved):
(JSC::DFG::ArrayMode::refine):
(JSC::DFG::ArrayMode::alreadyChecked):
(JSC::DFG::arrayTypeToString):
(JSC::DFG::arrayClassToString):
(DFG):
(JSC::DFG::arraySpeculationToString):
(JSC::DFG::arrayConversionToString):
(JSC::DFG::ArrayMode::toString):
* dfg/DFGArrayMode.h:
(DFG):
(ArrayMode):
(JSC::DFG::ArrayMode::ArrayMode):
(JSC::DFG::ArrayMode::type):
(JSC::DFG::ArrayMode::arrayClass):
(JSC::DFG::ArrayMode::speculation):
(JSC::DFG::ArrayMode::conversion):
(JSC::DFG::ArrayMode::asWord):
(JSC::DFG::ArrayMode::fromWord):
(JSC::DFG::ArrayMode::withSpeculation):
(JSC::DFG::ArrayMode::usesButterfly):
(JSC::DFG::ArrayMode::isJSArray):
(JSC::DFG::ArrayMode::isInBounds):
(JSC::DFG::ArrayMode::mayStoreToHole):
(JSC::DFG::ArrayMode::isOutOfBounds):
(JSC::DFG::ArrayMode::isSlowPut):
(JSC::DFG::ArrayMode::canCSEStorage):
(JSC::DFG::ArrayMode::lengthNeedsStorage):
(JSC::DFG::ArrayMode::modeForPut):
(JSC::DFG::ArrayMode::isSpecific):
(JSC::DFG::ArrayMode::supportsLength):
(JSC::DFG::ArrayMode::benefitsFromStructureCheck):
(JSC::DFG::ArrayMode::doesConversion):
(JSC::DFG::ArrayMode::arrayModesThatPassFiltering):
(JSC::DFG::ArrayMode::operator==):
(JSC::DFG::ArrayMode::operator!=):
(JSC::DFG::ArrayMode::arrayModesWithIndexingShape):
(JSC::DFG::canCSEStorage):
(JSC::DFG::lengthNeedsStorage):
* dfg/DFGByteCodeParser.cpp:
(JSC::DFG::ByteCodeParser::getArrayMode):
(JSC::DFG::ByteCodeParser::getArrayModeAndEmitChecks):
(JSC::DFG::ByteCodeParser::handleIntrinsic):
(JSC::DFG::ByteCodeParser::parseBlock):
* dfg/DFGCSEPhase.cpp:
(JSC::DFG::CSEPhase::getArrayLengthElimination):
(JSC::DFG::CSEPhase::checkArrayElimination):
(JSC::DFG::CSEPhase::getIndexedPropertyStorageLoadElimination):
(JSC::DFG::CSEPhase::performNodeCSE):
* dfg/DFGConstantFoldingPhase.cpp:
(JSC::DFG::ConstantFoldingPhase::foldConstants):
* dfg/DFGFixupPhase.cpp:
(JSC::DFG::FixupPhase::fixupNode):
(JSC::DFG::FixupPhase::checkArray):
(JSC::DFG::FixupPhase::blessArrayOperation):
* dfg/DFGGraph.cpp:
(JSC::DFG::Graph::dump):
* dfg/DFGGraph.h:
(JSC::DFG::Graph::byValIsPure):
* dfg/DFGNode.h:
(JSC::DFG::Node::arrayMode):
(JSC::DFG::Node::setArrayMode):
* dfg/DFGSpeculativeJIT.cpp:
(JSC::DFG::SpeculativeJIT::typedArrayDescriptor):
(JSC::DFG::SpeculativeJIT::jumpSlowForUnwantedArrayMode):
(JSC::DFG::SpeculativeJIT::checkArray):
(JSC::DFG::SpeculativeJIT::arrayify):
(JSC::DFG::SpeculativeJIT::compileGetByValOnString):
(JSC::DFG::SpeculativeJIT::compileGetByValOnIntTypedArray):
(JSC::DFG::SpeculativeJIT::compileGetByValOnFloatTypedArray):
(JSC::DFG::SpeculativeJIT::compilePutByValForFloatTypedArray):
(JSC::DFG::SpeculativeJIT::compileGetIndexedPropertyStorage):
(JSC::DFG::SpeculativeJIT::compileGetByValOnArguments):
(JSC::DFG::SpeculativeJIT::compileGetArgumentsLength):
(JSC::DFG::SpeculativeJIT::compileGetArrayLength):
(JSC::DFG::SpeculativeJIT::temporaryRegisterForPutByVal):
* dfg/DFGSpeculativeJIT.h:
(JSC::DFG::SpeculativeJIT::putByValWillNeedExtraRegister):
(SpeculativeJIT):
* dfg/DFGSpeculativeJIT32_64.cpp:
(JSC::DFG::SpeculativeJIT::compile):
* dfg/DFGSpeculativeJIT64.cpp:
(JSC::DFG::SpeculativeJIT::compile):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@132745 268f45cc-cd09-0410-ab3c-d52691b4dbfc