463   bool KnownLive;  in isLive()  local
467     KnownLive = isLiveRegion(cast<SymbolRegionValue>(sym)->getRegion());  in isLive()
470     KnownLive = false;  in isLive()
473     KnownLive = isLive(cast<SymbolDerived>(sym)->getParentSymbol());  in isLive()
476     KnownLive = isLiveRegion(cast<SymbolExtent>(sym)->getRegion());  in isLive()
479     KnownLive = MetadataInUse.count(sym) &&  in isLive()
481     if (KnownLive)  in isLive()
485     KnownLive = isLive(cast<SymIntExpr>(sym)->getLHS());  in isLive()
488     KnownLive = isLive(cast<IntSymExpr>(sym)->getRHS());  in isLive()
491     KnownLive = isLive(cast<SymSymExpr>(sym)->getLHS()) &&  in isLive()
495     KnownLive = isLive(cast<SymbolCast>(sym)->getOperand());  in isLive()
498     KnownLive = isLive(cast<UnarySymExpr>(sym)->getOperand());  in isLive()
502   if (KnownLive)  in isLive()
505   return KnownLive;  in isLive()