Index: llvm/utils/lit/lit/discovery.py
===================================================================
--- llvm/utils/lit/lit/discovery.py
+++ llvm/utils/lit/lit/discovery.py
@@ -48,10 +48,8 @@
         # configuration to load instead.
         config_map = litConfig.params.get('config_map')
         if config_map:
-            cfgpath = os.path.realpath(cfgpath)
-            cfgpath = os.path.normpath(cfgpath)
-            cfgpath = os.path.normcase(cfgpath)
-            target = config_map.get(cfgpath)
+            source_inode = os.stat(cfgpath)
+            target = config_map.get(source_inode)
             if target:
                 cfgpath = target