--- a/llvm/test/TableGen/cond-empty-list-arg.td	Mon May 25 11:55:54 2020 +0900
+++ b/llvm/test/TableGen/cond-empty-list-arg.td	Tue Jun 08 06:07:14 2021 +0900
@@ -1,8 +1,22 @@
-// RUN: llvm-tblgen %s
+// RUN: llvm-tblgen %s | FileCheck %s
 // XFAIL: vg_leak
 
+// Check that !cond works with an empty list value.
+
 class C<bit cond> {
-  bit true = 1;
-  list<int> X = !cond(cond: [1, 2, 3], true : []);
-  list<int> Y = !cond(cond: [], true : [4, 5, 6]);
+  bit True = 1;
+  list<int> X = !cond(cond: [1, 2, 3], True : []);
+  list<int> Y = !cond(cond: [], True : [4, 5, 6]);
 }
+
+// CHECK: def rec1
+// CHECK:   X = [];
+// CHECK:   Y = [4, 5, 6];
+
+def rec1 : C<0>;
+
+// CHECK: def rec2
+// CHECK:   X = [1, 2, 3];
+// CHECK:   Y = [];
+
+def rec2 : C<1>;