diff --git a/llvm/lib/TableGen/TGParser.cpp b/llvm/lib/TableGen/TGParser.cpp
--- a/llvm/lib/TableGen/TGParser.cpp
+++ b/llvm/lib/TableGen/TGParser.cpp
@@ -169,7 +169,6 @@
   // arguments, loop iterator, etc.
   switch (Kind) {
   case SK_Local:
-    break; /* do nothing. */
   case SK_Record: {
     if (CurRec) {
       // The variable is a record field?
diff --git a/llvm/test/TableGen/var-index.td b/llvm/test/TableGen/var-index.td
new file mode 100644
--- /dev/null
+++ b/llvm/test/TableGen/var-index.td
@@ -0,0 +1,10 @@
+// RUN: llvm-tblgen %s
+
+class ResolveArgCode<
+    list<int> Mapping,
+    int ax> {
+  int al = !and(ax, 0x00FF);
+  int num = Mapping[al];
+}
+
+def foo : ResolveArgCode<[0, 1], 0>;