[ThinLTO] Assembly representation of ReadOnly attribute

Differential revision: https://reviews.llvm.org/D54754

llvm-svn: 347489
diff --git a/llvm/lib/AsmParser/LLLexer.cpp b/llvm/lib/AsmParser/LLLexer.cpp
index 4f8ce3d..0452145 100644
--- a/llvm/lib/AsmParser/LLLexer.cpp
+++ b/llvm/lib/AsmParser/LLLexer.cpp
@@ -788,6 +788,7 @@
   KEYWORD(info);
   KEYWORD(byte);
   KEYWORD(bit);
+  KEYWORD(varFlags);
 
 #undef KEYWORD