Change dyn_cast to cast

[yubing]

InvokeInst inherits CallBase so it is ok to use cast<CallBase>(TI) after isa<InvokeInst>(TI)

[pengfei]

LGTM.

llvm/lib/CodeGen/WinEHPrepare.cpp

while (!WorkList.empty()) {
     if (I->isEHPad())
       State = EHInfo.EHPadStateMap[I];
     EHInfo.BlockToStateMap[BB] = State; // Record state, also flag visiting
 
     if ((isa<CleanupReturnInst>(TI) || isa<CatchReturnInst>(TI)) && State > 0) {
       // Retrive the new State
       State = EHInfo.CxxUnwindMap[State].ToState; // Retrive next State
     } else if (isa<InvokeInst>(TI)) {
-      auto *Call = dyn_cast<CallBase>(TI);
+      auto *Call = cast<CallBase>(TI);
       const Function *Fn = Call->getCalledFunction();
       if (Fn && Fn->isIntrinsic() &&
           (Fn->getIntrinsicID() == Intrinsic::seh_scope_begin ||
            Fn->getIntrinsicID() == Intrinsic::seh_try_begin))
         // Retrive the new State from seh_scope_begin
         State = EHInfo.InvokeStateMap[cast<InvokeInst>(TI)];
       else if (Fn && Fn->isIntrinsic() &&
                (Fn->getIntrinsicID() == Intrinsic::seh_scope_end ||
if (isa<CatchPadInst>(I) && isa<CatchReturnInst>(TI)) {
       const Function *Filter = dyn_cast<Function>(FilterOrNull);
       if (!Filter || !Filter->getName().startswith("__IsLocalUnwind"))
         State = EHInfo.SEHUnwindMap[State].ToState; // Retrive next State
     } else if ((isa<CleanupReturnInst>(TI) || isa<CatchReturnInst>(TI)) &&
                State > 0) {
       // Retrive the new State.
       State = EHInfo.SEHUnwindMap[State].ToState; // Retrive next State
     } else if (isa<InvokeInst>(TI)) {
-      auto *Call = dyn_cast<CallBase>(TI);
+      auto *Call = cast<CallBase>(TI);
       const Function *Fn = Call->getCalledFunction();
       if (Fn && Fn->isIntrinsic() &&
           Fn->getIntrinsicID() == Intrinsic::seh_try_begin)
         // Retrive the new State from seh_try_begin
         State = EHInfo.InvokeStateMap[cast<InvokeInst>(TI)];
       else if (Fn && Fn->isIntrinsic() &&
                Fn->getIntrinsicID() == Intrinsic::seh_try_end)
         // end of current state, retrive new state from UnwindMap

llvm/utils/TableGen/AsmWriterEmitter.cpp

for (auto &Alias : Aliases.second) {
         StringRef CombineType = Op->getDef()->getName();
         if (CombineType != "any_of" && CombineType != "all_of")
           PrintFatalError(R->getLoc(), "Invalid AssemblerCondDag!");
         if (D->getNumArgs() == 0)
           PrintFatalError(R->getLoc(), "Invalid AssemblerCondDag!");
         bool IsOr = CombineType == "any_of";
         // Change (any_of FeatureAll, (any_of ...)) to (any_of FeatureAll, ...).
         if (IsOr && D->getNumArgs() == 2 && isa<DagInit>(D->getArg(1))) {
-          DagInit *RHS = dyn_cast<DagInit>(D->getArg(1));
+          DagInit *RHS = cast<DagInit>(D->getArg(1));
           SmallVector<Init *> Args{D->getArg(0)};
           SmallVector<StringInit *> ArgNames{D->getArgName(0)};
           for (unsigned i = 0, e = RHS->getNumArgs(); i != e; ++i) {
             Args.push_back(RHS->getArg(i));
             ArgNames.push_back(RHS->getArgName(i));
           }
           D = DagInit::get(D->getOperator(), nullptr, Args, ArgNames);
         }