Thread safety: Adding in an option for variadic expr* array of arguments

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138351 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/ClangAttrEmitter.cpp b/utils/TableGen/ClangAttrEmitter.cpp
index 40bbb08..6ef25d9 100644
--- a/utils/TableGen/ClangAttrEmitter.cpp
+++ b/utils/TableGen/ClangAttrEmitter.cpp
@@ -489,6 +489,8 @@
     Ptr = new SimpleArgument(Arg, Attr, "unsigned");
   else if (ArgName == "VariadicUnsignedArgument")
     Ptr = new VariadicArgument(Arg, Attr, "unsigned");
+  else if (ArgName == "VariadicExprArgument")
+    Ptr = new VariadicArgument(Arg, Attr, "Expr *");
   else if (ArgName == "VersionArgument")
     Ptr = new VersionArgument(Arg, Attr);