Silence MSVC warning on missing return after fully covered switch

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221943 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Bitcode/Reader/BitstreamReader.cpp b/lib/Bitcode/Reader/BitstreamReader.cpp
index 27bb62f97d41cc253394b31d22f1a5f1ea8f674a..5e3232e531351ef66f0e6d0f90f587b94c95dc27 100644 (file)
--- a/lib/Bitcode/Reader/BitstreamReader.cpp
+++ b/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,