https://bugs.webkit.org/show_bug.cgi?id=118956

Reviewed by Sam Weinig.

We had two way of expressing that something exits forward: the NodeExitsForward
flag and the word 'Forward' in the NodeType. That's kind of dumb. This patch
makes it just be a flag.

* dfg/DFGAbstractInterpreterInlines.h:
(JSC::DFG::::executeEffects):
* dfg/DFGArgumentsSimplificationPhase.cpp:
(JSC::DFG::ArgumentsSimplificationPhase::run):
* dfg/DFGCSEPhase.cpp:
(JSC::DFG::CSEPhase::int32ToDoubleCSE):
(JSC::DFG::CSEPhase::checkStructureElimination):
(JSC::DFG::CSEPhase::structureTransitionWatchpointElimination):
(JSC::DFG::CSEPhase::putStructureStoreElimination):
(JSC::DFG::CSEPhase::checkArrayElimination):
(JSC::DFG::CSEPhase::performNodeCSE):
* dfg/DFGConstantFoldingPhase.cpp:
(JSC::DFG::ConstantFoldingPhase::foldConstants):
* dfg/DFGFixupPhase.cpp:
(JSC::DFG::FixupPhase::fixupNode):
(JSC::DFG::FixupPhase::injectInt32ToDoubleNode):
* dfg/DFGMinifiedNode.h:
(JSC::DFG::belongsInMinifiedGraph):
(JSC::DFG::MinifiedNode::hasChild):
* dfg/DFGNode.h:
(JSC::DFG::Node::convertToStructureTransitionWatchpoint):
(JSC::DFG::Node::hasStructureSet):
(JSC::DFG::Node::hasStructure):
(JSC::DFG::Node::hasArrayMode):
(JSC::DFG::Node::willHaveCodeGenOrOSR):
* dfg/DFGNodeType.h:
(DFG):
(JSC::DFG::needsOSRForwardRewiring):
* dfg/DFGPredictionPropagationPhase.cpp:
(JSC::DFG::PredictionPropagationPhase::propagate):
* dfg/DFGSafeToExecute.h:
(JSC::DFG::safeToExecute):
* dfg/DFGSpeculativeJIT.cpp:
(JSC::DFG::SpeculativeJIT::compileInt32ToDouble):
* dfg/DFGSpeculativeJIT32_64.cpp:
(JSC::DFG::SpeculativeJIT::compile):
* dfg/DFGSpeculativeJIT64.cpp:
(JSC::DFG::SpeculativeJIT::compile):
* dfg/DFGTypeCheckHoistingPhase.cpp:
(JSC::DFG::TypeCheckHoistingPhase::run):
(JSC::DFG::TypeCheckHoistingPhase::identifyRedundantStructureChecks):
(JSC::DFG::TypeCheckHoistingPhase::identifyRedundantArrayChecks):
* dfg/DFGVariableEventStream.cpp:
(JSC::DFG::VariableEventStream::reconstruct):
* ftl/FTLCapabilities.cpp:
(JSC::FTL::canCompile):
* ftl/FTLLowerDFGToLLVM.cpp:
(JSC::FTL::LowerDFGToLLVM::compileNode):
(JSC::FTL::LowerDFGToLLVM::addExitArgumentForNode):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153292 268f45cc-cd09-0410-ab3c-d52691b4dbfc