Silence MSVC warning on missing return after fully covered switch

llvm-svn: 221943

diff --git a/llvm/lib/Bitcode/Reader/BitstreamReader.cpp b/llvm/lib/Bitcode/Reader/BitstreamReader.cpp
index 27bb62f..5e3232e 100644 (file)
--- a/llvm/lib/Bitcode/Reader/BitstreamReader.cpp
+++ b/llvm/lib/Bitcode/Reader/BitstreamReader.cpp
@@ -66,6 +66,7 @@ static uint64_t readAbbreviatedField(BitstreamCursor &Cursor,
   case BitCodeAbbrevOp::Char6:
     return BitCodeAbbrevOp::DecodeChar6(Cursor.Read(6));
   }
+  llvm_unreachable("invalid abbreviation encoding");
 }
 
 static void skipAbbreviatedField(BitstreamCursor &Cursor,