diff --git a/llvm/lib/CodeGen/WinEHPrepare.cpp b/llvm/lib/CodeGen/WinEHPrepare.cpp
--- a/llvm/lib/CodeGen/WinEHPrepare.cpp
+++ b/llvm/lib/CodeGen/WinEHPrepare.cpp
@@ -250,7 +250,7 @@
       // 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 ||
@@ -318,7 +318,7 @@
       // 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)
diff --git a/llvm/utils/TableGen/AsmWriterEmitter.cpp b/llvm/utils/TableGen/AsmWriterEmitter.cpp
--- a/llvm/utils/TableGen/AsmWriterEmitter.cpp
+++ b/llvm/utils/TableGen/AsmWriterEmitter.cpp
@@ -1006,7 +1006,7 @@
         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) {