Fix "control reaches end of non-void function" warning. NFCI.

llvm-svn: 366856

diff --git a/llvm/lib/IR/RemarkStreamer.cpp b/llvm/lib/IR/RemarkStreamer.cpp
index c71487d..cb2eeeb 100644 (file)
--- a/llvm/lib/IR/RemarkStreamer.cpp
+++ b/llvm/lib/IR/RemarkStreamer.cpp
@@ -118,6 +118,7 @@ formatToSerializer(remarks::Format RemarksFormat, raw_ostream &OS) {
   case remarks::Format::YAMLStrTab:
     return llvm::make_unique<remarks::YAMLStrTabSerializer>(OS);
   };
+  llvm_unreachable("Unknown remarks::Format enum");
 }
 
 Expected<std::unique_ptr<ToolOutputFile>>