Fix "not all control paths return a value" MSVC warning. NFCI.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@368830 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Transforms/Coroutines/CoroSplit.cpp b/lib/Transforms/Coroutines/CoroSplit.cpp
index e091928609f130cfe69827c34015f317d05aa52e..5699217157b78fb73002074f40b9034e38ea400e 100644 (file)
--- a/lib/Transforms/Coroutines/CoroSplit.cpp
+++ b/lib/Transforms/Coroutines/CoroSplit.cpp
@@ -141,6 +141,7 @@ private:
     case Kind::SwitchCleanup:
       return true;
     }
+    llvm_unreachable("Unknown CoroCloner::Kind enum");
   }
 
   void createDeclaration();