Index: utils/lit/lit/llvm/config.py
===================================================================
--- utils/lit/lit/llvm/config.py
+++ utils/lit/lit/llvm/config.py
@@ -397,6 +397,11 @@
             ]
         self.add_tool_substitutions(tool_substitutions)
 
+        # Diff command used by Clang Analyzer tests (when comparing .plist files
+        # with reference output)
+        self.config.substitutions.append(('%diff_plist',
+                                          'diff -u -w -I "<string>/" -I "<string>.:" -I "version" -'))
+
         self.config.substitutions.append(('%itanium_abi_triple',
                                           self.make_itanium_abi_triple(self.config.target_triple)))
         self.config.substitutions.append(('%ms_abi_triple',