Index: lldb/test/API/lldbtest.py
===================================================================
--- lldb/test/API/lldbtest.py
+++ lldb/test/API/lldbtest.py
@@ -95,8 +95,12 @@
             # Otherwise this is just a failure.
             return lit.Test.FAIL, output
 
-        has_unsupported_tests = 'UNSUPPORTED:' in out or 'UNSUPPORTED:' in err
         has_passing_tests = 'PASS:' in out or 'PASS:' in err
+        has_expected_failures = 'XFAIL:' in out or 'XFAIL:' in err
+        if has_expected_failures and not has_passing_tests:
+            return lit.Test.XFAIL, output
+
+        has_unsupported_tests = 'UNSUPPORTED:' in out or 'UNSUPPORTED:' in err
         if has_unsupported_tests and not has_passing_tests:
             return lit.Test.UNSUPPORTED, output