diff --git a/llvm/utils/lit/lit/cl_arguments.py b/llvm/utils/lit/lit/cl_arguments.py
--- a/llvm/utils/lit/lit/cl_arguments.py
+++ b/llvm/utils/lit/lit/cl_arguments.py
@@ -237,6 +237,10 @@
 
     opts.reports = filter(None, [opts.output, opts.xunit_xml_output, opts.resultdb_output, opts.time_trace_output])
 
+    # Convert path arguments to absolute paths, so they can be referenced
+    # anywhere.
+    opts.path = [os.path.abspath(p) for p in opts.path]
+
     return opts