Index: llvm/trunk/utils/lit/lit/discovery.py
===================================================================
--- llvm/trunk/utils/lit/lit/discovery.py
+++ llvm/trunk/utils/lit/lit/discovery.py
@@ -200,9 +200,7 @@
     # Expand '@...' form in inputs.
     actual_inputs = []
     for input in inputs:
-        if os.path.exists(input) or not input.startswith('@'):
-            actual_inputs.append(input)
-        else:
+        if input.startswith('@'):
             f = open(input[1:])
             try:
                 for ln in f:
@@ -211,6 +209,10 @@
                         actual_inputs.append(ln)
             finally:
                 f.close()
+        elif os.path.exists(input):
+            actual_inputs.append(input)
+        else:
+            lit_config.warning('no such file or directory: %r' % input)
                     
     # Load the tests from the inputs.
     tests = []