WebKit JIT - Int32/Double Arrays can have Proxy Objects in the Prototype Chains

didBecomePrototype; if structurevm-hasMonoProto DeferredStructureTransitionWatchpointFire deferredvm, structurevm; Structure newStructure = Structure::changePrototypeTransitionvm, structurevm, prototype, deferred; setStructurevm, newStructure; else putDirectvm, knownPolyProtoOffset, prototype; if...