diff --git a/llvm/utils/lit/lit/TestRunner.py b/llvm/utils/lit/lit/TestRunner.py
--- a/llvm/utils/lit/lit/TestRunner.py
+++ b/llvm/utils/lit/lit/TestRunner.py
@@ -988,7 +988,7 @@
         if result.exitCode != 0:
             # On Windows, a negative exit code indicates a signal, and those are
             # easier to recognize or look up if we print them in hex.
-            if litConfig.isWindows and result.exitCode < 0:
+            if litConfig.isWindows and (result.exitCode < 0 or result.exitCode > 255):
                 codeStr = hex(int(result.exitCode & 0xFFFFFFFF)).rstrip("L")
             else:
                 codeStr = str(result.exitCode)